Commit | Line | Data |
---|---|---|
078e7b4a | 1 | /* Lisp parsing and input streams. |
5d65df0d | 2 | Copyright (C) 1985, 86, 87, 88, 89, 93, 94, 95, 97, 98, 99, 2000 |
33046fc9 | 3 | Free Software Foundation, Inc. |
078e7b4a JB |
4 | |
5 | This file is part of GNU Emacs. | |
6 | ||
7 | GNU Emacs is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
46947372 | 9 | the Free Software Foundation; either version 2, or (at your option) |
078e7b4a JB |
10 | any later version. |
11 | ||
12 | GNU Emacs is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GNU Emacs; see the file COPYING. If not, write to | |
3b7ad313 EN |
19 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
20 | Boston, MA 02111-1307, USA. */ | |
078e7b4a JB |
21 | |
22 | ||
98280b76 | 23 | #include <config.h> |
078e7b4a JB |
24 | #include <stdio.h> |
25 | #include <sys/types.h> | |
26 | #include <sys/stat.h> | |
27 | #include <sys/file.h> | |
2c1b5dbe | 28 | #include <errno.h> |
078e7b4a | 29 | #include "lisp.h" |
95384e1e | 30 | #include "intervals.h" |
078e7b4a | 31 | #include "buffer.h" |
fe0e03f3 | 32 | #include "charset.h" |
57bda87a | 33 | #include <epaths.h> |
078e7b4a | 34 | #include "commands.h" |
e37c0805 | 35 | #include "keyboard.h" |
7bd279cd | 36 | #include "termhooks.h" |
078e7b4a JB |
37 | |
38 | #ifdef lint | |
39 | #include <sys/inode.h> | |
40 | #endif /* lint */ | |
41 | ||
79051982 RS |
42 | #ifdef MSDOS |
43 | #if __DJGPP__ < 2 | |
44 | #include <unistd.h> /* to get X_OK */ | |
45 | #endif | |
46 | #include "msdos.h" | |
47 | #endif | |
48 | ||
c1a2f60a AS |
49 | #ifdef HAVE_UNISTD_H |
50 | #include <unistd.h> | |
51 | #endif | |
52 | ||
078e7b4a JB |
53 | #ifndef X_OK |
54 | #define X_OK 01 | |
55 | #endif | |
56 | ||
078e7b4a | 57 | #include <math.h> |
078e7b4a | 58 | |
c011e9a5 RS |
59 | #ifdef HAVE_SETLOCALE |
60 | #include <locale.h> | |
61 | #endif /* HAVE_SETLOCALE */ | |
62 | ||
f7d279f0 RS |
63 | #ifndef O_RDONLY |
64 | #define O_RDONLY 0 | |
65 | #endif | |
66 | ||
79cf851c | 67 | #ifdef HAVE_FSEEKO |
68c45bf0 PE |
68 | #define file_offset off_t |
69 | #define file_tell ftello | |
70 | #else | |
71 | #define file_offset long | |
72 | #define file_tell ftell | |
73 | #endif | |
74 | ||
03695ace | 75 | #ifndef USE_CRT_DLL |
2c1b5dbe | 76 | extern int errno; |
03695ace | 77 | #endif |
2c1b5dbe | 78 | |
8a1f1537 | 79 | Lisp_Object Qread_char, Qget_file_char, Qstandard_input, Qcurrent_load_list; |
078e7b4a | 80 | Lisp_Object Qvariable_documentation, Vvalues, Vstandard_input, Vafter_load_alist; |
20ea2964 | 81 | Lisp_Object Qascii_character, Qload, Qload_file_name; |
2b6cae0c | 82 | Lisp_Object Qbackquote, Qcomma, Qcomma_at, Qcomma_dot, Qfunction; |
74549846 | 83 | Lisp_Object Qinhibit_file_name_operation; |
7bd279cd RS |
84 | |
85 | extern Lisp_Object Qevent_symbol_element_mask; | |
74549846 | 86 | extern Lisp_Object Qfile_exists_p; |
078e7b4a JB |
87 | |
88 | /* non-zero if inside `load' */ | |
89 | int load_in_progress; | |
90 | ||
1521a8fa RS |
91 | /* Directory in which the sources were found. */ |
92 | Lisp_Object Vsource_directory; | |
93 | ||
078e7b4a JB |
94 | /* Search path for files to be loaded. */ |
95 | Lisp_Object Vload_path; | |
96 | ||
4116ab9f KH |
97 | /* File name of user's init file. */ |
98 | Lisp_Object Vuser_init_file; | |
99 | ||
ae321d28 RS |
100 | /* This is the user-visible association list that maps features to |
101 | lists of defs in their load files. */ | |
102 | Lisp_Object Vload_history; | |
103 | ||
20ea2964 | 104 | /* This is used to build the load history. */ |
ae321d28 RS |
105 | Lisp_Object Vcurrent_load_list; |
106 | ||
4b104c41 RS |
107 | /* List of files that were preloaded. */ |
108 | Lisp_Object Vpreloaded_file_list; | |
109 | ||
20ea2964 RS |
110 | /* Name of file actually being read by `load'. */ |
111 | Lisp_Object Vload_file_name; | |
112 | ||
84a15045 RS |
113 | /* Function to use for reading, in `load' and friends. */ |
114 | Lisp_Object Vload_read_function; | |
115 | ||
4ad679f9 EN |
116 | /* The association list of objects read with the #n=object form. |
117 | Each member of the list has the form (n . object), and is used to | |
118 | look up the object for the corresponding #n# construct. | |
119 | It must be set to nil before all top-level calls to read0. */ | |
120 | Lisp_Object read_objects; | |
121 | ||
b2a30870 RS |
122 | /* Nonzero means load should forcibly load all dynamic doc strings. */ |
123 | static int load_force_doc_strings; | |
124 | ||
94e554db RS |
125 | /* Nonzero means read should convert strings to unibyte. */ |
126 | static int load_convert_to_unibyte; | |
127 | ||
fe0e03f3 KH |
128 | /* Function to use for loading an Emacs lisp source file (not |
129 | compiled) instead of readevalloop. */ | |
130 | Lisp_Object Vload_source_file_function; | |
131 | ||
1ffcc3b1 DL |
132 | /* List of all DEFVAR_BOOL variables. Used by the byte optimizer. */ |
133 | Lisp_Object Vbyte_boolean_vars; | |
134 | ||
d2c6be7f RS |
135 | /* List of descriptors now open for Fload. */ |
136 | static Lisp_Object load_descriptor_list; | |
137 | ||
b2a30870 | 138 | /* File for get_file_char to read from. Use by load. */ |
078e7b4a JB |
139 | static FILE *instream; |
140 | ||
141 | /* When nonzero, read conses in pure space */ | |
142 | static int read_pure; | |
143 | ||
b2a30870 | 144 | /* For use within read-from-string (this reader is non-reentrant!!) */ |
078e7b4a | 145 | static int read_from_string_index; |
bed23cb2 | 146 | static int read_from_string_index_byte; |
078e7b4a | 147 | static int read_from_string_limit; |
17634846 | 148 | |
6f7f43d5 RS |
149 | /* Number of bytes left to read in the buffer character |
150 | that `readchar' has already advanced over. */ | |
151 | static int readchar_backlog; | |
152 | ||
c15cfd1f | 153 | /* This contains the last string skipped with #@. */ |
b2a30870 RS |
154 | static char *saved_doc_string; |
155 | /* Length of buffer allocated in saved_doc_string. */ | |
156 | static int saved_doc_string_size; | |
157 | /* Length of actual data in saved_doc_string. */ | |
158 | static int saved_doc_string_length; | |
159 | /* This is the file position that string came from. */ | |
68c45bf0 | 160 | static file_offset saved_doc_string_position; |
b2a30870 | 161 | |
c15cfd1f RS |
162 | /* This contains the previous string skipped with #@. |
163 | We copy it from saved_doc_string when a new string | |
164 | is put in saved_doc_string. */ | |
165 | static char *prev_saved_doc_string; | |
166 | /* Length of buffer allocated in prev_saved_doc_string. */ | |
167 | static int prev_saved_doc_string_size; | |
168 | /* Length of actual data in prev_saved_doc_string. */ | |
169 | static int prev_saved_doc_string_length; | |
170 | /* This is the file position that string came from. */ | |
68c45bf0 | 171 | static file_offset prev_saved_doc_string_position; |
c15cfd1f | 172 | |
17634846 RS |
173 | /* Nonzero means inside a new-style backquote |
174 | with no surrounding parentheses. | |
175 | Fread initializes this to zero, so we need not specbind it | |
176 | or worry about what happens to it when there is an error. */ | |
177 | static int new_backquote_flag; | |
7ee3bd7b GM |
178 | |
179 | /* A list of file names for files being loaded in Fload. Used to | |
180 | check for recursive loads. */ | |
181 | ||
182 | static Lisp_Object Vloads_in_progress; | |
183 | ||
550a625e GM |
184 | /* Limit of the depth of recursive loads. */ |
185 | ||
186 | Lisp_Object Vrecursive_load_depth_limit; | |
187 | ||
188 | /* Non-zero means load dangerous compiled Lisp files. */ | |
189 | ||
190 | int load_dangerous_libraries; | |
191 | ||
192 | /* A regular expression used to detect files compiled with Emacs. */ | |
193 | ||
194 | static Lisp_Object Vbytecomp_version_regexp; | |
195 | ||
196 | static void readevalloop P_ ((Lisp_Object, FILE*, Lisp_Object, | |
197 | Lisp_Object (*) (), int, | |
198 | Lisp_Object, Lisp_Object)); | |
199 | static Lisp_Object load_unwind P_ ((Lisp_Object)); | |
200 | static Lisp_Object load_descriptor_unwind P_ ((Lisp_Object)); | |
201 | ||
078e7b4a JB |
202 | \f |
203 | /* Handle unreading and rereading of characters. | |
204 | Write READCHAR to read a character, | |
fe0e03f3 KH |
205 | UNREAD(c) to unread c to be read again. |
206 | ||
207 | These macros actually read/unread a byte code, multibyte characters | |
208 | are not handled here. The caller should manage them if necessary. | |
209 | */ | |
078e7b4a JB |
210 | |
211 | #define READCHAR readchar (readcharfun) | |
212 | #define UNREAD(c) unreadchar (readcharfun, c) | |
213 | ||
214 | static int | |
215 | readchar (readcharfun) | |
216 | Lisp_Object readcharfun; | |
217 | { | |
218 | Lisp_Object tem; | |
95384e1e | 219 | register int c; |
078e7b4a | 220 | |
cfff016d | 221 | if (BUFFERP (readcharfun)) |
078e7b4a | 222 | { |
bed23cb2 | 223 | register struct buffer *inbuffer = XBUFFER (readcharfun); |
078e7b4a | 224 | |
bed23cb2 RS |
225 | int pt_byte = BUF_PT_BYTE (inbuffer); |
226 | int orig_pt_byte = pt_byte; | |
6f7f43d5 | 227 | |
00a9a935 RS |
228 | if (readchar_backlog > 0) |
229 | /* We get the address of the byte just passed, | |
230 | which is the last byte of the character. | |
231 | The other bytes in this character are consecutive with it, | |
232 | because the gap can't be in the middle of a character. */ | |
233 | return *(BUF_BYTE_ADDRESS (inbuffer, BUF_PT_BYTE (inbuffer) - 1) | |
234 | - --readchar_backlog); | |
235 | ||
bed23cb2 RS |
236 | if (pt_byte >= BUF_ZV_BYTE (inbuffer)) |
237 | return -1; | |
078e7b4a | 238 | |
00a9a935 RS |
239 | readchar_backlog = -1; |
240 | ||
bed23cb2 RS |
241 | if (! NILP (inbuffer->enable_multibyte_characters)) |
242 | { | |
00a9a935 | 243 | /* Fetch the character code from the buffer. */ |
bed23cb2 RS |
244 | unsigned char *p = BUF_BYTE_ADDRESS (inbuffer, pt_byte); |
245 | BUF_INC_POS (inbuffer, pt_byte); | |
246 | c = STRING_CHAR (p, pt_byte - orig_pt_byte); | |
247 | } | |
248 | else | |
249 | { | |
250 | c = BUF_FETCH_BYTE (inbuffer, pt_byte); | |
251 | pt_byte++; | |
6f7f43d5 | 252 | } |
bed23cb2 | 253 | SET_BUF_PT_BOTH (inbuffer, BUF_PT (inbuffer) + 1, pt_byte); |
6f7f43d5 | 254 | |
bed23cb2 | 255 | return c; |
078e7b4a | 256 | } |
cfff016d | 257 | if (MARKERP (readcharfun)) |
078e7b4a | 258 | { |
bed23cb2 | 259 | register struct buffer *inbuffer = XMARKER (readcharfun)->buffer; |
078e7b4a | 260 | |
bed23cb2 RS |
261 | int bytepos = marker_byte_position (readcharfun); |
262 | int orig_bytepos = bytepos; | |
6f7f43d5 | 263 | |
00a9a935 RS |
264 | if (readchar_backlog > 0) |
265 | /* We get the address of the byte just passed, | |
266 | which is the last byte of the character. | |
267 | The other bytes in this character are consecutive with it, | |
268 | because the gap can't be in the middle of a character. */ | |
269 | return *(BUF_BYTE_ADDRESS (inbuffer, XMARKER (readcharfun)->bytepos - 1) | |
270 | - --readchar_backlog); | |
271 | ||
bed23cb2 RS |
272 | if (bytepos >= BUF_ZV_BYTE (inbuffer)) |
273 | return -1; | |
6f7f43d5 | 274 | |
00a9a935 RS |
275 | readchar_backlog = -1; |
276 | ||
bed23cb2 RS |
277 | if (! NILP (inbuffer->enable_multibyte_characters)) |
278 | { | |
00a9a935 | 279 | /* Fetch the character code from the buffer. */ |
bed23cb2 RS |
280 | unsigned char *p = BUF_BYTE_ADDRESS (inbuffer, bytepos); |
281 | BUF_INC_POS (inbuffer, bytepos); | |
282 | c = STRING_CHAR (p, bytepos - orig_bytepos); | |
283 | } | |
284 | else | |
285 | { | |
286 | c = BUF_FETCH_BYTE (inbuffer, bytepos); | |
287 | bytepos++; | |
6f7f43d5 RS |
288 | } |
289 | ||
bed23cb2 RS |
290 | XMARKER (readcharfun)->bytepos = bytepos; |
291 | XMARKER (readcharfun)->charpos++; | |
292 | ||
293 | return c; | |
078e7b4a | 294 | } |
ad0153e4 RS |
295 | |
296 | if (EQ (readcharfun, Qlambda)) | |
297 | return read_bytecode_char (0); | |
298 | ||
078e7b4a | 299 | if (EQ (readcharfun, Qget_file_char)) |
2c1b5dbe KH |
300 | { |
301 | c = getc (instream); | |
302 | #ifdef EINTR | |
303 | /* Interrupted reads have been observed while reading over the network */ | |
304 | while (c == EOF && ferror (instream) && errno == EINTR) | |
305 | { | |
306 | clearerr (instream); | |
307 | c = getc (instream); | |
308 | } | |
309 | #endif | |
310 | return c; | |
311 | } | |
078e7b4a | 312 | |
cfff016d | 313 | if (STRINGP (readcharfun)) |
078e7b4a | 314 | { |
bed23cb2 | 315 | if (read_from_string_index >= read_from_string_limit) |
078e7b4a | 316 | c = -1; |
f0354c03 | 317 | else |
bed23cb2 RS |
318 | FETCH_STRING_CHAR_ADVANCE (c, readcharfun, |
319 | read_from_string_index, | |
320 | read_from_string_index_byte); | |
6f7f43d5 | 321 | |
078e7b4a JB |
322 | return c; |
323 | } | |
324 | ||
325 | tem = call0 (readcharfun); | |
326 | ||
265a9e55 | 327 | if (NILP (tem)) |
078e7b4a JB |
328 | return -1; |
329 | return XINT (tem); | |
330 | } | |
331 | ||
332 | /* Unread the character C in the way appropriate for the stream READCHARFUN. | |
333 | If the stream is a user function, call it with the char as argument. */ | |
334 | ||
335 | static void | |
336 | unreadchar (readcharfun, c) | |
337 | Lisp_Object readcharfun; | |
338 | int c; | |
339 | { | |
92fddec9 KH |
340 | if (c == -1) |
341 | /* Don't back up the pointer if we're unreading the end-of-input mark, | |
342 | since readchar didn't advance it when we read it. */ | |
343 | ; | |
cfff016d | 344 | else if (BUFFERP (readcharfun)) |
d7760ca9 | 345 | { |
bed23cb2 RS |
346 | struct buffer *b = XBUFFER (readcharfun); |
347 | int bytepos = BUF_PT_BYTE (b); | |
d7760ca9 | 348 | |
00a9a935 RS |
349 | if (readchar_backlog >= 0) |
350 | readchar_backlog++; | |
bed23cb2 | 351 | else |
00a9a935 RS |
352 | { |
353 | BUF_PT (b)--; | |
354 | if (! NILP (b->enable_multibyte_characters)) | |
355 | BUF_DEC_POS (b, bytepos); | |
356 | else | |
357 | bytepos--; | |
d7760ca9 | 358 | |
00a9a935 RS |
359 | BUF_PT_BYTE (b) = bytepos; |
360 | } | |
d7760ca9 | 361 | } |
cfff016d | 362 | else if (MARKERP (readcharfun)) |
d7760ca9 | 363 | { |
bed23cb2 RS |
364 | struct buffer *b = XMARKER (readcharfun)->buffer; |
365 | int bytepos = XMARKER (readcharfun)->bytepos; | |
d7760ca9 | 366 | |
00a9a935 RS |
367 | if (readchar_backlog >= 0) |
368 | readchar_backlog++; | |
bed23cb2 | 369 | else |
00a9a935 RS |
370 | { |
371 | XMARKER (readcharfun)->charpos--; | |
372 | if (! NILP (b->enable_multibyte_characters)) | |
373 | BUF_DEC_POS (b, bytepos); | |
374 | else | |
375 | bytepos--; | |
d7760ca9 | 376 | |
00a9a935 RS |
377 | XMARKER (readcharfun)->bytepos = bytepos; |
378 | } | |
d7760ca9 | 379 | } |
cfff016d | 380 | else if (STRINGP (readcharfun)) |
bed23cb2 RS |
381 | { |
382 | read_from_string_index--; | |
383 | read_from_string_index_byte | |
384 | = string_char_to_byte (readcharfun, read_from_string_index); | |
385 | } | |
ad0153e4 RS |
386 | else if (EQ (readcharfun, Qlambda)) |
387 | read_bytecode_char (1); | |
078e7b4a JB |
388 | else if (EQ (readcharfun, Qget_file_char)) |
389 | ungetc (c, instream); | |
390 | else | |
391 | call1 (readcharfun, make_number (c)); | |
392 | } | |
393 | ||
394 | static Lisp_Object read0 (), read1 (), read_list (), read_vector (); | |
6f7f43d5 | 395 | static int read_multibyte (); |
9e062b6c RS |
396 | static Lisp_Object substitute_object_recurse (); |
397 | static void substitute_object_in_subtree (), substitute_in_interval (); | |
398 | ||
078e7b4a | 399 | \f |
bed23cb2 | 400 | /* Get a character from the tty. */ |
078e7b4a | 401 | |
3d9b22be JB |
402 | extern Lisp_Object read_char (); |
403 | ||
f42be754 JB |
404 | /* Read input events until we get one that's acceptable for our purposes. |
405 | ||
406 | If NO_SWITCH_FRAME is non-zero, switch-frame events are stashed | |
407 | until we get a character we like, and then stuffed into | |
408 | unread_switch_frame. | |
409 | ||
410 | If ASCII_REQUIRED is non-zero, we check function key events to see | |
411 | if the unmodified version of the symbol has a Qascii_character | |
412 | property, and use that character, if present. | |
413 | ||
414 | If ERROR_NONASCII is non-zero, we signal an error if the input we | |
415 | get isn't an ASCII character with modifiers. If it's zero but | |
416 | ASCII_REQUIRED is non-zero, we just re-read until we get an ASCII | |
bb49a192 RS |
417 | character. |
418 | ||
419 | If INPUT_METHOD is nonzero, we invoke the current input method | |
420 | if the character warrants that. */ | |
cc39bc38 | 421 | |
f42be754 | 422 | Lisp_Object |
bb49a192 RS |
423 | read_filtered_event (no_switch_frame, ascii_required, error_nonascii, |
424 | input_method) | |
425 | int no_switch_frame, ascii_required, error_nonascii, input_method; | |
f42be754 | 426 | { |
153a17b7 KH |
427 | register Lisp_Object val, delayed_switch_frame; |
428 | ||
5dbf89bc GM |
429 | #ifdef HAVE_WINDOW_SYSTEM |
430 | if (display_busy_cursor_p) | |
431 | cancel_busy_cursor (); | |
432 | #endif | |
433 | ||
153a17b7 | 434 | delayed_switch_frame = Qnil; |
f42be754 JB |
435 | |
436 | /* Read until we get an acceptable event. */ | |
437 | retry: | |
bb49a192 RS |
438 | val = read_char (0, 0, 0, |
439 | (input_method ? Qnil : Qt), | |
440 | 0); | |
f42be754 | 441 | |
cfff016d | 442 | if (BUFFERP (val)) |
6c82d689 KH |
443 | goto retry; |
444 | ||
f42be754 | 445 | /* switch-frame events are put off until after the next ASCII |
8e6208c5 | 446 | character. This is better than signaling an error just because |
f42be754 JB |
447 | the last characters were typed to a separate minibuffer frame, |
448 | for example. Eventually, some code which can deal with | |
449 | switch-frame events will read it and process it. */ | |
450 | if (no_switch_frame | |
451 | && EVENT_HAS_PARAMETERS (val) | |
452 | && EQ (EVENT_HEAD (val), Qswitch_frame)) | |
453 | { | |
454 | delayed_switch_frame = val; | |
455 | goto retry; | |
456 | } | |
457 | ||
458 | if (ascii_required) | |
459 | { | |
460 | /* Convert certain symbols to their ASCII equivalents. */ | |
cfff016d | 461 | if (SYMBOLP (val)) |
f42be754 | 462 | { |
95384e1e | 463 | Lisp_Object tem, tem1; |
f42be754 JB |
464 | tem = Fget (val, Qevent_symbol_element_mask); |
465 | if (!NILP (tem)) | |
466 | { | |
467 | tem1 = Fget (Fcar (tem), Qascii_character); | |
468 | /* Merge this symbol's modifier bits | |
469 | with the ASCII equivalent of its basic code. */ | |
470 | if (!NILP (tem1)) | |
baf69866 | 471 | XSETFASTINT (val, XINT (tem1) | XINT (Fcar (Fcdr (tem)))); |
f42be754 JB |
472 | } |
473 | } | |
474 | ||
475 | /* If we don't have a character now, deal with it appropriately. */ | |
cfff016d | 476 | if (!INTEGERP (val)) |
f42be754 JB |
477 | { |
478 | if (error_nonascii) | |
479 | { | |
1ec84625 | 480 | Vunread_command_events = Fcons (val, Qnil); |
f42be754 JB |
481 | error ("Non-character input-event"); |
482 | } | |
483 | else | |
484 | goto retry; | |
485 | } | |
486 | } | |
487 | ||
488 | if (! NILP (delayed_switch_frame)) | |
489 | unread_switch_frame = delayed_switch_frame; | |
490 | ||
5dbf89bc GM |
491 | #ifdef HAVE_WINDOW_SYSTEM |
492 | if (display_busy_cursor_p) | |
493 | start_busy_cursor (); | |
494 | #endif | |
f42be754 | 495 | return val; |
f42be754 JB |
496 | } |
497 | ||
bb49a192 | 498 | DEFUN ("read-char", Fread_char, Sread_char, 0, 2, 0, |
078e7b4a | 499 | "Read a character from the command input (keyboard or macro).\n\ |
e51e47f7 JB |
500 | It is returned as a number.\n\ |
501 | If the user generates an event which is not a character (i.e. a mouse\n\ | |
e37c0805 JB |
502 | click or function key event), `read-char' signals an error. As an\n\ |
503 | exception, switch-frame events are put off until non-ASCII events can\n\ | |
504 | be read.\n\ | |
505 | If you want to read non-character events, or ignore them, call\n\ | |
bb49a192 RS |
506 | `read-event' or `read-char-exclusive' instead.\n\ |
507 | \n\ | |
508 | If the optional argument PROMPT is non-nil, display that as a prompt.\n\ | |
fc351d2f KH |
509 | If the optional argument INHERIT-INPUT-METHOD is non-nil and some\n\ |
510 | input method is turned on in the current buffer, that input method\n\ | |
511 | is used for reading a character.") | |
512 | (prompt, inherit_input_method) | |
513 | Lisp_Object prompt, inherit_input_method; | |
078e7b4a | 514 | { |
bb49a192 RS |
515 | if (! NILP (prompt)) |
516 | message_with_string ("%s", prompt, 0); | |
fc351d2f | 517 | return read_filtered_event (1, 1, 1, ! NILP (inherit_input_method)); |
078e7b4a JB |
518 | } |
519 | ||
bb49a192 RS |
520 | DEFUN ("read-event", Fread_event, Sread_event, 0, 2, 0, |
521 | "Read an event object from the input stream.\n\ | |
522 | If the optional argument PROMPT is non-nil, display that as a prompt.\n\ | |
fc351d2f KH |
523 | If the optional argument INHERIT-INPUT-METHOD is non-nil and some\n\ |
524 | input method is turned on in the current buffer, that input method\n\ | |
525 | is used for reading a character.") | |
526 | (prompt, inherit_input_method) | |
527 | Lisp_Object prompt, inherit_input_method; | |
078e7b4a | 528 | { |
bb49a192 RS |
529 | if (! NILP (prompt)) |
530 | message_with_string ("%s", prompt, 0); | |
fc351d2f | 531 | return read_filtered_event (0, 0, 0, ! NILP (inherit_input_method)); |
078e7b4a JB |
532 | } |
533 | ||
bb49a192 | 534 | DEFUN ("read-char-exclusive", Fread_char_exclusive, Sread_char_exclusive, 0, 2, 0, |
078e7b4a | 535 | "Read a character from the command input (keyboard or macro).\n\ |
bb49a192 RS |
536 | It is returned as a number. Non-character events are ignored.\n\ |
537 | \n\ | |
538 | If the optional argument PROMPT is non-nil, display that as a prompt.\n\ | |
fc351d2f KH |
539 | If the optional argument INHERIT-INPUT-METHOD is non-nil and some\n\ |
540 | input method is turned on in the current buffer, that input method\n\ | |
541 | is used for reading a character.") | |
542 | (prompt, inherit_input_method) | |
543 | Lisp_Object prompt, inherit_input_method; | |
078e7b4a | 544 | { |
bb49a192 RS |
545 | if (! NILP (prompt)) |
546 | message_with_string ("%s", prompt, 0); | |
fc351d2f | 547 | return read_filtered_event (1, 1, 0, ! NILP (inherit_input_method)); |
078e7b4a | 548 | } |
078e7b4a JB |
549 | |
550 | DEFUN ("get-file-char", Fget_file_char, Sget_file_char, 0, 0, 0, | |
551 | "Don't use this yourself.") | |
552 | () | |
553 | { | |
554 | register Lisp_Object val; | |
1805de4f | 555 | XSETINT (val, getc (instream)); |
078e7b4a JB |
556 | return val; |
557 | } | |
da84f340 GM |
558 | |
559 | ||
550a625e | 560 | \f |
da84f340 GM |
561 | /* Value is non-zero if the file asswociated with file descriptor FD |
562 | is a compiled Lisp file that's safe to load. Only files compiled | |
563 | with Emacs are safe to load. Files compiled with XEmacs can lead | |
564 | to a crash in Fbyte_code because of an incompatible change in the | |
565 | byte compiler. */ | |
566 | ||
567 | static int | |
568 | safe_to_load_p (fd) | |
569 | int fd; | |
570 | { | |
571 | char buf[512]; | |
572 | int nbytes, i; | |
573 | int safe_p = 1; | |
574 | ||
575 | /* Read the first few bytes from the file, and look for a line | |
576 | specifying the byte compiler version used. */ | |
577 | nbytes = emacs_read (fd, buf, sizeof buf - 1); | |
578 | if (nbytes > 0) | |
579 | { | |
580 | buf[nbytes] = '\0'; | |
581 | ||
582 | /* Skip to the next newline, skipping over the initial `ELC' | |
583 | with NUL bytes following it. */ | |
584 | for (i = 0; i < nbytes && buf[i] != '\n'; ++i) | |
585 | ; | |
586 | ||
587 | if (i < nbytes | |
588 | && fast_c_string_match_ignore_case (Vbytecomp_version_regexp, | |
589 | buf + i) < 0) | |
590 | safe_p = 0; | |
591 | } | |
592 | ||
593 | lseek (fd, 0, SEEK_SET); | |
594 | return safe_p; | |
595 | } | |
596 | ||
597 | ||
7ee3bd7b GM |
598 | /* Callback for record_unwind_protect. Restore the old load list OLD, |
599 | after loading a file successfully. */ | |
600 | ||
601 | static Lisp_Object | |
602 | record_load_unwind (old) | |
603 | Lisp_Object old; | |
604 | { | |
605 | return Vloads_in_progress = old; | |
606 | } | |
607 | ||
608 | ||
f0a50954 | 609 | DEFUN ("load", Fload, Sload, 1, 5, 0, |
078e7b4a JB |
610 | "Execute a file of Lisp code named FILE.\n\ |
611 | First try FILE with `.elc' appended, then try with `.el',\n\ | |
612 | then try FILE unmodified.\n\ | |
613 | This function searches the directories in `load-path'.\n\ | |
614 | If optional second arg NOERROR is non-nil,\n\ | |
615 | report no error if FILE doesn't exist.\n\ | |
616 | Print messages at start and end of loading unless\n\ | |
617 | optional third arg NOMESSAGE is non-nil.\n\ | |
618 | If optional fourth arg NOSUFFIX is non-nil, don't try adding\n\ | |
619 | suffixes `.elc' or `.el' to the specified name FILE.\n\ | |
211f7dcd | 620 | If optional fifth arg MUST-SUFFIX is non-nil, insist on\n\ |
7b88a4cf | 621 | the suffix `.elc' or `.el'; don't accept just FILE unless\n\ |
211f7dcd | 622 | it ends in one of those suffixes or includes a directory name.\n\ |
078e7b4a | 623 | Return t if file exists.") |
f0a50954 RS |
624 | (file, noerror, nomessage, nosuffix, must_suffix) |
625 | Lisp_Object file, noerror, nomessage, nosuffix, must_suffix; | |
078e7b4a JB |
626 | { |
627 | register FILE *stream; | |
628 | register int fd = -1; | |
629 | register Lisp_Object lispstream; | |
078e7b4a JB |
630 | int count = specpdl_ptr - specpdl; |
631 | Lisp_Object temp; | |
632 | struct gcpro gcpro1; | |
633 | Lisp_Object found; | |
04fc68e7 RS |
634 | /* 1 means we printed the ".el is newer" message. */ |
635 | int newer = 0; | |
636 | /* 1 means we are loading a compiled file. */ | |
637 | int compiled = 0; | |
c2225d00 | 638 | Lisp_Object handler; |
456c67a4 | 639 | int safe_p = 1; |
229ba775 | 640 | char *fmode = "r"; |
317073d5 | 641 | #ifdef DOS_NT |
229ba775 | 642 | fmode = "rt"; |
317073d5 | 643 | #endif /* DOS_NT */ |
078e7b4a | 644 | |
0745dce9 | 645 | CHECK_STRING (file, 0); |
078e7b4a | 646 | |
c2225d00 | 647 | /* If file name is magic, call the handler. */ |
0745dce9 | 648 | handler = Ffind_file_name_handler (file, Qload); |
c2225d00 | 649 | if (!NILP (handler)) |
0745dce9 | 650 | return call5 (handler, Qload, file, noerror, nomessage, nosuffix); |
c2225d00 | 651 | |
07a0bda3 RS |
652 | /* Do this after the handler to avoid |
653 | the need to gcpro noerror, nomessage and nosuffix. | |
654 | (Below here, we care only whether they are nil or not.) */ | |
0745dce9 | 655 | file = Fsubstitute_in_file_name (file); |
07a0bda3 | 656 | |
078e7b4a JB |
657 | /* Avoid weird lossage with null string as arg, |
658 | since it would try to load a directory as a Lisp file */ | |
0745dce9 | 659 | if (XSTRING (file)->size > 0) |
078e7b4a | 660 | { |
471aa4a0 | 661 | int size = STRING_BYTES (XSTRING (file)); |
211f7dcd | 662 | |
0745dce9 | 663 | GCPRO1 (file); |
211f7dcd RS |
664 | |
665 | if (! NILP (must_suffix)) | |
666 | { | |
667 | /* Don't insist on adding a suffix if FILE already ends with one. */ | |
668 | if (size > 3 | |
669 | && !strcmp (XSTRING (file)->data + size - 3, ".el")) | |
670 | must_suffix = Qnil; | |
671 | else if (size > 4 | |
672 | && !strcmp (XSTRING (file)->data + size - 4, ".elc")) | |
673 | must_suffix = Qnil; | |
674 | /* Don't insist on adding a suffix | |
675 | if the argument includes a directory name. */ | |
676 | else if (! NILP (Ffile_name_directory (file))) | |
677 | must_suffix = Qnil; | |
678 | } | |
679 | ||
f0a50954 RS |
680 | fd = openp (Vload_path, file, |
681 | (!NILP (nosuffix) ? "" | |
9b7c9ebd DL |
682 | : ! NILP (must_suffix) ? ".elc.gz:.elc:.el.gz:.el" |
683 | : ".elc:.elc.gz:.el.gz:.el:"), | |
078e7b4a | 684 | &found, 0); |
5a6e5452 | 685 | UNGCPRO; |
078e7b4a JB |
686 | } |
687 | ||
96dc0f4e | 688 | if (fd == -1) |
078e7b4a | 689 | { |
265a9e55 | 690 | if (NILP (noerror)) |
078e7b4a JB |
691 | while (1) |
692 | Fsignal (Qfile_error, Fcons (build_string ("Cannot open load file"), | |
0745dce9 | 693 | Fcons (file, Qnil))); |
078e7b4a JB |
694 | else |
695 | return Qnil; | |
696 | } | |
697 | ||
ba0d1195 | 698 | /* Tell startup.el whether or not we found the user's init file. */ |
4116ab9f KH |
699 | if (EQ (Qt, Vuser_init_file)) |
700 | Vuser_init_file = found; | |
701 | ||
96dc0f4e MB |
702 | /* If FD is -2, that means openp found a magic file. */ |
703 | if (fd == -2) | |
74549846 | 704 | { |
5e24a1f7 KH |
705 | if (NILP (Fequal (found, file))) |
706 | /* If FOUND is a different file name from FILE, | |
707 | find its handler even if we have already inhibited | |
708 | the `load' operation on FILE. */ | |
709 | handler = Ffind_file_name_handler (found, Qt); | |
710 | else | |
711 | handler = Ffind_file_name_handler (found, Qload); | |
712 | if (! NILP (handler)) | |
713 | return call5 (handler, Qload, found, noerror, nomessage, Qt); | |
74549846 RS |
714 | } |
715 | ||
550a625e GM |
716 | /* Check if we're stuck in a recursive load cycle. |
717 | ||
718 | 2000-09-21: It's not possible to just check for the file loaded | |
719 | being a member of Vloads_in_progress. This fails because of the | |
720 | way the byte compiler currently works; `provide's are not | |
721 | evaluted, see font-lock.el/jit-lock.el as an example. This | |
722 | leads to a certain amount of ``normal'' recursion. | |
723 | ||
724 | Also, just loading a file recursively is not always an error in | |
725 | the general case; the second load may do something different. */ | |
726 | if (INTEGERP (Vrecursive_load_depth_limit) | |
727 | && XINT (Vrecursive_load_depth_limit) > 0) | |
728 | { | |
729 | Lisp_Object len = Flength (Vloads_in_progress); | |
730 | if (XFASTINT (len) > XFASTINT (Vrecursive_load_depth_limit)) | |
731 | Fsignal (Qerror, Fcons (build_string ("Recursive load suspected"), | |
732 | Fcons (found, Vloads_in_progress))); | |
733 | record_unwind_protect (record_load_unwind, Vloads_in_progress); | |
734 | Vloads_in_progress = Fcons (found, Vloads_in_progress); | |
735 | } | |
7ee3bd7b | 736 | |
471aa4a0 | 737 | if (!bcmp (&(XSTRING (found)->data[STRING_BYTES (XSTRING (found)) - 4]), |
96dc0f4e MB |
738 | ".elc", 4)) |
739 | /* Load .elc files directly, but not when they are | |
740 | remote and have no handler! */ | |
078e7b4a | 741 | { |
96dc0f4e | 742 | if (fd != -2) |
da84f340 | 743 | { |
96dc0f4e MB |
744 | struct stat s1, s2; |
745 | int result; | |
da84f340 | 746 | |
96dc0f4e MB |
747 | if (!safe_to_load_p (fd)) |
748 | { | |
749 | safe_p = 0; | |
750 | if (!load_dangerous_libraries) | |
751 | error ("File `%s' was not compiled in Emacs", | |
752 | XSTRING (found)->data); | |
753 | else if (!NILP (nomessage)) | |
754 | message_with_string ("File `%s' not compiled in Emacs", found, 1); | |
755 | } | |
04fc68e7 | 756 | |
96dc0f4e MB |
757 | compiled = 1; |
758 | ||
26fbf20b | 759 | #ifdef DOS_NT |
96dc0f4e | 760 | fmode = "rb"; |
26fbf20b | 761 | #endif /* DOS_NT */ |
96dc0f4e MB |
762 | stat ((char *)XSTRING (found)->data, &s1); |
763 | XSTRING (found)->data[STRING_BYTES (XSTRING (found)) - 1] = 0; | |
764 | result = stat ((char *)XSTRING (found)->data, &s2); | |
765 | if (result >= 0 && (unsigned) s1.st_mtime < (unsigned) s2.st_mtime) | |
766 | { | |
767 | /* Make the progress messages mention that source is newer. */ | |
768 | newer = 1; | |
04fc68e7 | 769 | |
96dc0f4e MB |
770 | /* If we won't print another message, mention this anyway. */ |
771 | if (! NILP (nomessage)) | |
772 | message_with_string ("Source file `%s' newer than byte-compiled file", | |
773 | found, 1); | |
774 | } | |
775 | XSTRING (found)->data[STRING_BYTES (XSTRING (found)) - 1] = 'c'; | |
51ac6f83 | 776 | } |
078e7b4a | 777 | } |
fe0e03f3 KH |
778 | else |
779 | { | |
da84f340 GM |
780 | load_source: |
781 | ||
fe0e03f3 KH |
782 | /* We are loading a source file (*.el). */ |
783 | if (!NILP (Vload_source_file_function)) | |
784 | { | |
7ee3bd7b | 785 | Lisp_Object val; |
96dc0f4e MB |
786 | |
787 | if (fd >= 0) | |
68c45bf0 | 788 | emacs_close (fd); |
7ee3bd7b GM |
789 | val = call4 (Vload_source_file_function, found, file, |
790 | NILP (noerror) ? Qnil : Qt, | |
791 | NILP (nomessage) ? Qnil : Qt); | |
792 | return unbind_to (count, val); | |
fe0e03f3 KH |
793 | } |
794 | } | |
078e7b4a | 795 | |
229ba775 | 796 | #ifdef WINDOWSNT |
68c45bf0 | 797 | emacs_close (fd); |
229ba775 EZ |
798 | stream = fopen ((char *) XSTRING (found)->data, fmode); |
799 | #else /* not WINDOWSNT */ | |
800 | stream = fdopen (fd, fmode); | |
801 | #endif /* not WINDOWSNT */ | |
078e7b4a JB |
802 | if (stream == 0) |
803 | { | |
68c45bf0 | 804 | emacs_close (fd); |
0745dce9 | 805 | error ("Failure to create stdio stream for %s", XSTRING (file)->data); |
078e7b4a JB |
806 | } |
807 | ||
4b104c41 RS |
808 | if (! NILP (Vpurify_flag)) |
809 | Vpreloaded_file_list = Fcons (file, Vpreloaded_file_list); | |
810 | ||
04fc68e7 RS |
811 | if (NILP (nomessage)) |
812 | { | |
da84f340 GM |
813 | if (!safe_p) |
814 | message_with_string ("Loading %s (compiled; note unsafe, not compiled in Emacs)...", | |
815 | file, 1); | |
816 | else if (!compiled) | |
e28552a4 | 817 | message_with_string ("Loading %s (source)...", file, 1); |
db5cae4b | 818 | else if (newer) |
e28552a4 RS |
819 | message_with_string ("Loading %s (compiled; note, source file is newer)...", |
820 | file, 1); | |
db5cae4b | 821 | else /* The typical case; compiled file newer than source file. */ |
e28552a4 | 822 | message_with_string ("Loading %s...", file, 1); |
04fc68e7 | 823 | } |
078e7b4a | 824 | |
0745dce9 | 825 | GCPRO1 (file); |
838abf56 | 826 | lispstream = Fcons (Qnil, Qnil); |
c1d497be KR |
827 | XSETFASTINT (XCAR (lispstream), (EMACS_UINT)stream >> 16); |
828 | XSETFASTINT (XCDR (lispstream), (EMACS_UINT)stream & 0xffff); | |
078e7b4a | 829 | record_unwind_protect (load_unwind, lispstream); |
d2c6be7f | 830 | record_unwind_protect (load_descriptor_unwind, load_descriptor_list); |
20ea2964 | 831 | specbind (Qload_file_name, found); |
74549846 | 832 | specbind (Qinhibit_file_name_operation, Qnil); |
d2c6be7f RS |
833 | load_descriptor_list |
834 | = Fcons (make_number (fileno (stream)), load_descriptor_list); | |
078e7b4a | 835 | load_in_progress++; |
976350af | 836 | readevalloop (Qget_file_char, stream, file, Feval, 0, Qnil, Qnil); |
078e7b4a JB |
837 | unbind_to (count, Qnil); |
838 | ||
839 | /* Run any load-hooks for this file. */ | |
0745dce9 | 840 | temp = Fassoc (file, Vafter_load_alist); |
265a9e55 | 841 | if (!NILP (temp)) |
078e7b4a JB |
842 | Fprogn (Fcdr (temp)); |
843 | UNGCPRO; | |
844 | ||
b2a30870 RS |
845 | if (saved_doc_string) |
846 | free (saved_doc_string); | |
847 | saved_doc_string = 0; | |
848 | saved_doc_string_size = 0; | |
849 | ||
c15cfd1f | 850 | if (prev_saved_doc_string) |
3cb65b0e | 851 | xfree (prev_saved_doc_string); |
c15cfd1f RS |
852 | prev_saved_doc_string = 0; |
853 | prev_saved_doc_string_size = 0; | |
854 | ||
265a9e55 | 855 | if (!noninteractive && NILP (nomessage)) |
04fc68e7 | 856 | { |
da84f340 GM |
857 | if (!safe_p) |
858 | message_with_string ("Loading %s (compiled; note unsafe, not compiled in Emacs)...done", | |
859 | file, 1); | |
860 | else if (!compiled) | |
e28552a4 | 861 | message_with_string ("Loading %s (source)...done", file, 1); |
db5cae4b | 862 | else if (newer) |
e28552a4 RS |
863 | message_with_string ("Loading %s (compiled; note, source file is newer)...done", |
864 | file, 1); | |
db5cae4b | 865 | else /* The typical case; compiled file newer than source file. */ |
e28552a4 | 866 | message_with_string ("Loading %s...done", file, 1); |
04fc68e7 | 867 | } |
7ee3bd7b | 868 | |
078e7b4a JB |
869 | return Qt; |
870 | } | |
871 | ||
872 | static Lisp_Object | |
873 | load_unwind (stream) /* used as unwind-protect function in load */ | |
874 | Lisp_Object stream; | |
875 | { | |
c1d497be KR |
876 | fclose ((FILE *) (XFASTINT (XCAR (stream)) << 16 |
877 | | XFASTINT (XCDR (stream)))); | |
078e7b4a JB |
878 | if (--load_in_progress < 0) load_in_progress = 0; |
879 | return Qnil; | |
880 | } | |
881 | ||
d2c6be7f RS |
882 | static Lisp_Object |
883 | load_descriptor_unwind (oldlist) | |
884 | Lisp_Object oldlist; | |
885 | { | |
886 | load_descriptor_list = oldlist; | |
838abf56 | 887 | return Qnil; |
d2c6be7f RS |
888 | } |
889 | ||
890 | /* Close all descriptors in use for Floads. | |
891 | This is used when starting a subprocess. */ | |
892 | ||
893 | void | |
894 | close_load_descs () | |
895 | { | |
f3849f25 | 896 | #ifndef WINDOWSNT |
d2c6be7f | 897 | Lisp_Object tail; |
c1d497be | 898 | for (tail = load_descriptor_list; !NILP (tail); tail = XCDR (tail)) |
68c45bf0 | 899 | emacs_close (XFASTINT (XCAR (tail))); |
f3849f25 | 900 | #endif |
d2c6be7f | 901 | } |
078e7b4a JB |
902 | \f |
903 | static int | |
904 | complete_filename_p (pathname) | |
905 | Lisp_Object pathname; | |
906 | { | |
907 | register unsigned char *s = XSTRING (pathname)->data; | |
317073d5 RS |
908 | return (IS_DIRECTORY_SEP (s[0]) |
909 | || (XSTRING (pathname)->size > 2 | |
910 | && IS_DEVICE_SEP (s[1]) && IS_DIRECTORY_SEP (s[2])) | |
078e7b4a JB |
911 | #ifdef ALTOS |
912 | || *s == '@' | |
913 | #endif | |
914 | #ifdef VMS | |
915 | || index (s, ':') | |
916 | #endif /* VMS */ | |
917 | ); | |
918 | } | |
919 | ||
920 | /* Search for a file whose name is STR, looking in directories | |
921 | in the Lisp list PATH, and trying suffixes from SUFFIX. | |
922 | SUFFIX is a string containing possible suffixes separated by colons. | |
923 | On success, returns a file descriptor. On failure, returns -1. | |
924 | ||
925 | EXEC_ONLY nonzero means don't open the files, | |
926 | just look for one that is executable. In this case, | |
927 | returns 1 on success. | |
928 | ||
929 | If STOREPTR is nonzero, it points to a slot where the name of | |
930 | the file actually found should be stored as a Lisp string. | |
74549846 RS |
931 | nil is stored there on failure. |
932 | ||
96dc0f4e | 933 | If the file we find is remote, return -2 |
74549846 RS |
934 | but store the found remote file name in *STOREPTR. |
935 | We do not check for remote files if EXEC_ONLY is nonzero. */ | |
078e7b4a JB |
936 | |
937 | int | |
938 | openp (path, str, suffix, storeptr, exec_only) | |
939 | Lisp_Object path, str; | |
940 | char *suffix; | |
941 | Lisp_Object *storeptr; | |
942 | int exec_only; | |
943 | { | |
944 | register int fd; | |
945 | int fn_size = 100; | |
946 | char buf[100]; | |
947 | register char *fn = buf; | |
948 | int absolute = 0; | |
949 | int want_size; | |
74549846 | 950 | Lisp_Object filename; |
078e7b4a | 951 | struct stat st; |
8c0f83fe | 952 | struct gcpro gcpro1, gcpro2, gcpro3; |
ace46dfe | 953 | Lisp_Object string; |
078e7b4a | 954 | |
8c0f83fe GM |
955 | string = filename = Qnil; |
956 | GCPRO3 (str, string, filename); | |
ace46dfe | 957 | |
078e7b4a JB |
958 | if (storeptr) |
959 | *storeptr = Qnil; | |
960 | ||
961 | if (complete_filename_p (str)) | |
962 | absolute = 1; | |
963 | ||
265a9e55 | 964 | for (; !NILP (path); path = Fcdr (path)) |
078e7b4a JB |
965 | { |
966 | char *nsuffix; | |
967 | ||
968 | filename = Fexpand_file_name (str, Fcar (path)); | |
969 | if (!complete_filename_p (filename)) | |
970 | /* If there are non-absolute elts in PATH (eg ".") */ | |
971 | /* Of course, this could conceivably lose if luser sets | |
972 | default-directory to be something non-absolute... */ | |
973 | { | |
974 | filename = Fexpand_file_name (filename, current_buffer->directory); | |
975 | if (!complete_filename_p (filename)) | |
976 | /* Give up on this path element! */ | |
977 | continue; | |
978 | } | |
979 | ||
980 | /* Calculate maximum size of any filename made from | |
981 | this path element/specified file name and any possible suffix. */ | |
471aa4a0 | 982 | want_size = strlen (suffix) + STRING_BYTES (XSTRING (filename)) + 1; |
078e7b4a JB |
983 | if (fn_size < want_size) |
984 | fn = (char *) alloca (fn_size = 100 + want_size); | |
985 | ||
986 | nsuffix = suffix; | |
987 | ||
988 | /* Loop over suffixes. */ | |
989 | while (1) | |
990 | { | |
991 | char *esuffix = (char *) index (nsuffix, ':'); | |
992 | int lsuffix = esuffix ? esuffix - nsuffix : strlen (nsuffix); | |
74549846 | 993 | Lisp_Object handler; |
078e7b4a | 994 | |
c49afcd7 RS |
995 | /* Concatenate path element/specified name with the suffix. |
996 | If the directory starts with /:, remove that. */ | |
997 | if (XSTRING (filename)->size > 2 | |
998 | && XSTRING (filename)->data[0] == '/' | |
999 | && XSTRING (filename)->data[1] == ':') | |
1000 | { | |
1001 | strncpy (fn, XSTRING (filename)->data + 2, | |
471aa4a0 KH |
1002 | STRING_BYTES (XSTRING (filename)) - 2); |
1003 | fn[STRING_BYTES (XSTRING (filename)) - 2] = 0; | |
c49afcd7 RS |
1004 | } |
1005 | else | |
1006 | { | |
471aa4a0 KH |
1007 | strncpy (fn, XSTRING (filename)->data, |
1008 | STRING_BYTES (XSTRING (filename))); | |
1009 | fn[STRING_BYTES (XSTRING (filename))] = 0; | |
c49afcd7 RS |
1010 | } |
1011 | ||
078e7b4a JB |
1012 | if (lsuffix != 0) /* Bug happens on CCI if lsuffix is 0. */ |
1013 | strncat (fn, nsuffix, lsuffix); | |
1014 | ||
74549846 RS |
1015 | /* Check that the file exists and is not a directory. */ |
1016 | if (absolute) | |
1017 | handler = Qnil; | |
1018 | else | |
1019 | handler = Ffind_file_name_handler (filename, Qfile_exists_p); | |
1020 | if (! NILP (handler) && ! exec_only) | |
078e7b4a | 1021 | { |
74549846 | 1022 | int exists; |
078e7b4a | 1023 | |
74549846 RS |
1024 | string = build_string (fn); |
1025 | exists = ! NILP (exec_only ? Ffile_executable_p (string) | |
1026 | : Ffile_readable_p (string)); | |
1027 | if (exists | |
1028 | && ! NILP (Ffile_directory_p (build_string (fn)))) | |
1029 | exists = 0; | |
1030 | ||
1031 | if (exists) | |
078e7b4a JB |
1032 | { |
1033 | /* We succeeded; return this descriptor and filename. */ | |
1034 | if (storeptr) | |
1035 | *storeptr = build_string (fn); | |
5ef2a3c0 | 1036 | UNGCPRO; |
96dc0f4e | 1037 | return -2; |
74549846 RS |
1038 | } |
1039 | } | |
1040 | else | |
1041 | { | |
1042 | int exists = (stat (fn, &st) >= 0 | |
1043 | && (st.st_mode & S_IFMT) != S_IFDIR); | |
1044 | if (exists) | |
1045 | { | |
1046 | /* Check that we can access or open it. */ | |
1047 | if (exec_only) | |
1048 | fd = (access (fn, X_OK) == 0) ? 1 : -1; | |
1049 | else | |
68c45bf0 | 1050 | fd = emacs_open (fn, O_RDONLY, 0); |
74549846 RS |
1051 | |
1052 | if (fd >= 0) | |
1053 | { | |
1054 | /* We succeeded; return this descriptor and filename. */ | |
1055 | if (storeptr) | |
1056 | *storeptr = build_string (fn); | |
1057 | UNGCPRO; | |
1058 | return fd; | |
1059 | } | |
078e7b4a JB |
1060 | } |
1061 | } | |
1062 | ||
1063 | /* Advance to next suffix. */ | |
1064 | if (esuffix == 0) | |
1065 | break; | |
1066 | nsuffix += lsuffix + 1; | |
1067 | } | |
5a6e5452 | 1068 | if (absolute) |
5ef2a3c0 | 1069 | break; |
078e7b4a JB |
1070 | } |
1071 | ||
5ef2a3c0 KH |
1072 | UNGCPRO; |
1073 | return -1; | |
078e7b4a JB |
1074 | } |
1075 | ||
1076 | \f | |
ae321d28 RS |
1077 | /* Merge the list we've accumulated of globals from the current input source |
1078 | into the load_history variable. The details depend on whether | |
1079 | the source has an associated file name or not. */ | |
1080 | ||
1081 | static void | |
1082 | build_load_history (stream, source) | |
1083 | FILE *stream; | |
1084 | Lisp_Object source; | |
1085 | { | |
1086 | register Lisp_Object tail, prev, newelt; | |
1087 | register Lisp_Object tem, tem2; | |
1088 | register int foundit, loading; | |
1089 | ||
1090 | loading = stream || !NARROWED; | |
1091 | ||
1092 | tail = Vload_history; | |
1093 | prev = Qnil; | |
1094 | foundit = 0; | |
1095 | while (!NILP (tail)) | |
1096 | { | |
1097 | tem = Fcar (tail); | |
1098 | ||
1099 | /* Find the feature's previous assoc list... */ | |
1100 | if (!NILP (Fequal (source, Fcar (tem)))) | |
1101 | { | |
1102 | foundit = 1; | |
1103 | ||
1104 | /* If we're loading, remove it. */ | |
1105 | if (loading) | |
1106 | { | |
1107 | if (NILP (prev)) | |
1108 | Vload_history = Fcdr (tail); | |
1109 | else | |
1110 | Fsetcdr (prev, Fcdr (tail)); | |
1111 | } | |
1112 | ||
1113 | /* Otherwise, cons on new symbols that are not already members. */ | |
1114 | else | |
1115 | { | |
1116 | tem2 = Vcurrent_load_list; | |
1117 | ||
1118 | while (CONSP (tem2)) | |
1119 | { | |
1120 | newelt = Fcar (tem2); | |
1121 | ||
1122 | if (NILP (Fmemq (newelt, tem))) | |
1123 | Fsetcar (tail, Fcons (Fcar (tem), | |
1124 | Fcons (newelt, Fcdr (tem)))); | |
1125 | ||
1126 | tem2 = Fcdr (tem2); | |
1127 | QUIT; | |
1128 | } | |
1129 | } | |
1130 | } | |
1131 | else | |
1132 | prev = tail; | |
1133 | tail = Fcdr (tail); | |
1134 | QUIT; | |
1135 | } | |
1136 | ||
8a1f1537 RS |
1137 | /* If we're loading, cons the new assoc onto the front of load-history, |
1138 | the most-recently-loaded position. Also do this if we didn't find | |
1139 | an existing member for the current source. */ | |
1140 | if (loading || !foundit) | |
1141 | Vload_history = Fcons (Fnreverse (Vcurrent_load_list), | |
1142 | Vload_history); | |
ae321d28 RS |
1143 | } |
1144 | ||
078e7b4a | 1145 | Lisp_Object |
232ccf27 DL |
1146 | unreadpure (junk) /* Used as unwind-protect function in readevalloop */ |
1147 | Lisp_Object junk; | |
078e7b4a JB |
1148 | { |
1149 | read_pure = 0; | |
1150 | return Qnil; | |
1151 | } | |
1152 | ||
94e554db RS |
1153 | static Lisp_Object |
1154 | readevalloop_1 (old) | |
1155 | Lisp_Object old; | |
1156 | { | |
1157 | load_convert_to_unibyte = ! NILP (old); | |
1158 | return Qnil; | |
1159 | } | |
1160 | ||
9c97398c GM |
1161 | /* Signal an `end-of-file' error, if possible with file name |
1162 | information. */ | |
1163 | ||
1164 | static void | |
1165 | end_of_file_error () | |
1166 | { | |
1167 | Lisp_Object data; | |
1168 | ||
1169 | if (STRINGP (Vload_file_name)) | |
1170 | data = Fcons (Vload_file_name, Qnil); | |
1171 | else | |
1172 | data = Qnil; | |
1173 | ||
1174 | Fsignal (Qend_of_file, data); | |
1175 | } | |
1176 | ||
94e554db | 1177 | /* UNIBYTE specifies how to set load_convert_to_unibyte |
976350af RS |
1178 | for this invocation. |
1179 | READFUN, if non-nil, is used instead of `read'. */ | |
94e554db | 1180 | |
078e7b4a | 1181 | static void |
976350af | 1182 | readevalloop (readcharfun, stream, sourcename, evalfun, printflag, unibyte, readfun) |
078e7b4a | 1183 | Lisp_Object readcharfun; |
ae321d28 RS |
1184 | FILE *stream; |
1185 | Lisp_Object sourcename; | |
078e7b4a JB |
1186 | Lisp_Object (*evalfun) (); |
1187 | int printflag; | |
976350af | 1188 | Lisp_Object unibyte, readfun; |
078e7b4a JB |
1189 | { |
1190 | register int c; | |
1191 | register Lisp_Object val; | |
1192 | int count = specpdl_ptr - specpdl; | |
8a1f1537 | 1193 | struct gcpro gcpro1; |
49cf7ff4 | 1194 | struct buffer *b = 0; |
f38952fe | 1195 | int continue_reading_p; |
49cf7ff4 RS |
1196 | |
1197 | if (BUFFERP (readcharfun)) | |
1198 | b = XBUFFER (readcharfun); | |
1199 | else if (MARKERP (readcharfun)) | |
1200 | b = XMARKER (readcharfun)->buffer; | |
078e7b4a JB |
1201 | |
1202 | specbind (Qstandard_input, readcharfun); | |
8a1f1537 | 1203 | specbind (Qcurrent_load_list, Qnil); |
94e554db RS |
1204 | record_unwind_protect (readevalloop_1, load_convert_to_unibyte ? Qt : Qnil); |
1205 | load_convert_to_unibyte = !NILP (unibyte); | |
078e7b4a | 1206 | |
00a9a935 | 1207 | readchar_backlog = -1; |
6f7f43d5 | 1208 | |
8a1f1537 | 1209 | GCPRO1 (sourcename); |
ae321d28 | 1210 | |
ae321d28 RS |
1211 | LOADHIST_ATTACH (sourcename); |
1212 | ||
f38952fe GM |
1213 | continue_reading_p = 1; |
1214 | while (continue_reading_p) | |
078e7b4a | 1215 | { |
49cf7ff4 RS |
1216 | if (b != 0 && NILP (b->name)) |
1217 | error ("Reading from killed buffer"); | |
1218 | ||
078e7b4a JB |
1219 | instream = stream; |
1220 | c = READCHAR; | |
1221 | if (c == ';') | |
1222 | { | |
1223 | while ((c = READCHAR) != '\n' && c != -1); | |
1224 | continue; | |
1225 | } | |
1226 | if (c < 0) break; | |
6069d957 RS |
1227 | |
1228 | /* Ignore whitespace here, so we can detect eof. */ | |
1229 | if (c == ' ' || c == '\t' || c == '\n' || c == '\f' || c == '\r') | |
1230 | continue; | |
078e7b4a | 1231 | |
265a9e55 | 1232 | if (!NILP (Vpurify_flag) && c == '(') |
078e7b4a | 1233 | { |
0e326373 | 1234 | int count1 = specpdl_ptr - specpdl; |
078e7b4a JB |
1235 | record_unwind_protect (unreadpure, Qnil); |
1236 | val = read_list (-1, readcharfun); | |
0e326373 | 1237 | unbind_to (count1, Qnil); |
078e7b4a JB |
1238 | } |
1239 | else | |
1240 | { | |
1241 | UNREAD (c); | |
4ad679f9 | 1242 | read_objects = Qnil; |
f38952fe GM |
1243 | if (!NILP (readfun)) |
1244 | { | |
1245 | val = call1 (readfun, readcharfun); | |
1246 | ||
1247 | /* If READCHARFUN has set point to ZV, we should | |
1248 | stop reading, even if the form read sets point | |
1249 | to a different value when evaluated. */ | |
1250 | if (BUFFERP (readcharfun)) | |
1251 | { | |
1252 | struct buffer *b = XBUFFER (readcharfun); | |
1253 | if (BUF_PT (b) == BUF_ZV (b)) | |
1254 | continue_reading_p = 0; | |
1255 | } | |
1256 | } | |
976350af | 1257 | else if (! NILP (Vload_read_function)) |
84a15045 | 1258 | val = call1 (Vload_read_function, readcharfun); |
976350af RS |
1259 | else |
1260 | val = read0 (readcharfun); | |
078e7b4a JB |
1261 | } |
1262 | ||
1263 | val = (*evalfun) (val); | |
f38952fe | 1264 | |
078e7b4a JB |
1265 | if (printflag) |
1266 | { | |
1267 | Vvalues = Fcons (val, Vvalues); | |
1268 | if (EQ (Vstandard_output, Qt)) | |
1269 | Fprin1 (val, Qnil); | |
1270 | else | |
1271 | Fprint (val, Qnil); | |
1272 | } | |
1273 | } | |
1274 | ||
ae321d28 | 1275 | build_load_history (stream, sourcename); |
ae321d28 RS |
1276 | UNGCPRO; |
1277 | ||
078e7b4a JB |
1278 | unbind_to (count, Qnil); |
1279 | } | |
1280 | ||
1076254d | 1281 | DEFUN ("eval-buffer", Feval_buffer, Seval_buffer, 0, 5, "", |
94b304d7 RS |
1282 | "Execute the current buffer as Lisp code.\n\ |
1283 | Programs can pass two arguments, BUFFER and PRINTFLAG.\n\ | |
1284 | BUFFER is the buffer to evaluate (nil means use current buffer).\n\ | |
1285 | PRINTFLAG controls printing of output:\n\ | |
228d4b1c JA |
1286 | nil means discard it; anything else is stream for print.\n\ |
1287 | \n\ | |
13febd85 RS |
1288 | If the optional third argument FILENAME is non-nil,\n\ |
1289 | it specifies the file name to use for `load-history'.\n\ | |
1076254d RS |
1290 | The optional fourth argument UNIBYTE specifies `load-convert-to-unibyte'\n\ |
1291 | for this invocation.\n\ | |
1292 | \n\ | |
1293 | The optional fifth argument DO-ALLOW-PRINT, if not-nil, specifies that\n\ | |
1294 | `print' and related functions should work normally even if PRINTFLAG is nil.\n\ | |
13febd85 | 1295 | \n\ |
d331bcad | 1296 | This function preserves the position of point.") |
1076254d RS |
1297 | (buffer, printflag, filename, unibyte, do_allow_print) |
1298 | Lisp_Object buffer, printflag, filename, unibyte, do_allow_print; | |
228d4b1c JA |
1299 | { |
1300 | int count = specpdl_ptr - specpdl; | |
1301 | Lisp_Object tem, buf; | |
1302 | ||
9391b698 | 1303 | if (NILP (buffer)) |
228d4b1c JA |
1304 | buf = Fcurrent_buffer (); |
1305 | else | |
9391b698 | 1306 | buf = Fget_buffer (buffer); |
dfdb645c | 1307 | if (NILP (buf)) |
13febd85 | 1308 | error ("No such buffer"); |
228d4b1c | 1309 | |
1076254d | 1310 | if (NILP (printflag) && NILP (do_allow_print)) |
228d4b1c JA |
1311 | tem = Qsymbolp; |
1312 | else | |
1313 | tem = printflag; | |
13febd85 RS |
1314 | |
1315 | if (NILP (filename)) | |
1316 | filename = XBUFFER (buf)->filename; | |
1317 | ||
228d4b1c JA |
1318 | specbind (Qstandard_output, tem); |
1319 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
1320 | BUF_SET_PT (XBUFFER (buf), BUF_BEGV (XBUFFER (buf))); | |
976350af | 1321 | readevalloop (buf, 0, filename, Feval, !NILP (printflag), unibyte, Qnil); |
cb09ab7a | 1322 | unbind_to (count, Qnil); |
228d4b1c JA |
1323 | |
1324 | return Qnil; | |
1325 | } | |
1326 | ||
1327 | #if 0 | |
c23edb78 | 1328 | XDEFUN ("eval-current-buffer", Feval_current_buffer, Seval_current_buffer, 0, 1, "", |
078e7b4a JB |
1329 | "Execute the current buffer as Lisp code.\n\ |
1330 | Programs can pass argument PRINTFLAG which controls printing of output:\n\ | |
1331 | nil means discard it; anything else is stream for print.\n\ | |
1332 | \n\ | |
1333 | If there is no error, point does not move. If there is an error,\n\ | |
1334 | point remains at the end of the last character read from the buffer.") | |
1335 | (printflag) | |
1336 | Lisp_Object printflag; | |
1337 | { | |
1338 | int count = specpdl_ptr - specpdl; | |
ae321d28 RS |
1339 | Lisp_Object tem, cbuf; |
1340 | ||
1341 | cbuf = Fcurrent_buffer () | |
078e7b4a | 1342 | |
265a9e55 | 1343 | if (NILP (printflag)) |
078e7b4a JB |
1344 | tem = Qsymbolp; |
1345 | else | |
1346 | tem = printflag; | |
1347 | specbind (Qstandard_output, tem); | |
1348 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
1349 | SET_PT (BEGV); | |
94e554db | 1350 | readevalloop (cbuf, 0, XBUFFER (cbuf)->filename, Feval, |
976350af | 1351 | !NILP (printflag), Qnil, Qnil); |
078e7b4a JB |
1352 | return unbind_to (count, Qnil); |
1353 | } | |
228d4b1c | 1354 | #endif |
078e7b4a | 1355 | |
976350af | 1356 | DEFUN ("eval-region", Feval_region, Seval_region, 2, 4, "r", |
078e7b4a JB |
1357 | "Execute the region as Lisp code.\n\ |
1358 | When called from programs, expects two arguments,\n\ | |
1359 | giving starting and ending indices in the current buffer\n\ | |
1360 | of the text to be executed.\n\ | |
1361 | Programs can pass third argument PRINTFLAG which controls output:\n\ | |
1362 | nil means discard it; anything else is stream for printing it.\n\ | |
976350af RS |
1363 | Also the fourth argument READ-FUNCTION, if non-nil, is used\n\ |
1364 | instead of `read' to read each expression. It gets one argument\n\ | |
1365 | which is the input stream for reading characters.\n\ | |
078e7b4a | 1366 | \n\ |
83f0c0c7 | 1367 | This function does not move point.") |
976350af RS |
1368 | (start, end, printflag, read_function) |
1369 | Lisp_Object start, end, printflag, read_function; | |
078e7b4a JB |
1370 | { |
1371 | int count = specpdl_ptr - specpdl; | |
ae321d28 RS |
1372 | Lisp_Object tem, cbuf; |
1373 | ||
1374 | cbuf = Fcurrent_buffer (); | |
078e7b4a | 1375 | |
265a9e55 | 1376 | if (NILP (printflag)) |
078e7b4a JB |
1377 | tem = Qsymbolp; |
1378 | else | |
1379 | tem = printflag; | |
1380 | specbind (Qstandard_output, tem); | |
1381 | ||
265a9e55 | 1382 | if (NILP (printflag)) |
078e7b4a JB |
1383 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); |
1384 | record_unwind_protect (save_restriction_restore, save_restriction_save ()); | |
1385 | ||
9391b698 EN |
1386 | /* This both uses start and checks its type. */ |
1387 | Fgoto_char (start); | |
1388 | Fnarrow_to_region (make_number (BEGV), end); | |
94e554db | 1389 | readevalloop (cbuf, 0, XBUFFER (cbuf)->filename, Feval, |
976350af | 1390 | !NILP (printflag), Qnil, read_function); |
078e7b4a JB |
1391 | |
1392 | return unbind_to (count, Qnil); | |
1393 | } | |
1394 | ||
078e7b4a JB |
1395 | \f |
1396 | DEFUN ("read", Fread, Sread, 0, 1, 0, | |
1397 | "Read one Lisp expression as text from STREAM, return as Lisp object.\n\ | |
1398 | If STREAM is nil, use the value of `standard-input' (which see).\n\ | |
1399 | STREAM or the value of `standard-input' may be:\n\ | |
1400 | a buffer (read from point and advance it)\n\ | |
1401 | a marker (read from where it points and advance it)\n\ | |
1402 | a function (call it with no arguments for each character,\n\ | |
1403 | call it with a char as argument to push a char back)\n\ | |
1404 | a string (takes text from string, starting at the beginning)\n\ | |
dcd46557 DL |
1405 | t (read text line using minibuffer and use it, or read from\n\ |
1406 | standard input in batch mode).") | |
5be02dff KH |
1407 | (stream) |
1408 | Lisp_Object stream; | |
078e7b4a JB |
1409 | { |
1410 | extern Lisp_Object Fread_minibuffer (); | |
1411 | ||
5be02dff KH |
1412 | if (NILP (stream)) |
1413 | stream = Vstandard_input; | |
1414 | if (EQ (stream, Qt)) | |
1415 | stream = Qread_char; | |
078e7b4a | 1416 | |
00a9a935 | 1417 | readchar_backlog = -1; |
17634846 | 1418 | new_backquote_flag = 0; |
4ad679f9 | 1419 | read_objects = Qnil; |
17634846 | 1420 | |
5be02dff | 1421 | if (EQ (stream, Qread_char)) |
078e7b4a | 1422 | return Fread_minibuffer (build_string ("Lisp expression: "), Qnil); |
078e7b4a | 1423 | |
5be02dff KH |
1424 | if (STRINGP (stream)) |
1425 | return Fcar (Fread_from_string (stream, Qnil, Qnil)); | |
078e7b4a | 1426 | |
5be02dff | 1427 | return read0 (stream); |
078e7b4a JB |
1428 | } |
1429 | ||
1430 | DEFUN ("read-from-string", Fread_from_string, Sread_from_string, 1, 3, 0, | |
1431 | "Read one Lisp expression which is represented as text by STRING.\n\ | |
1432 | Returns a cons: (OBJECT-READ . FINAL-STRING-INDEX).\n\ | |
1433 | START and END optionally delimit a substring of STRING from which to read;\n\ | |
1434 | they default to 0 and (length STRING) respectively.") | |
1435 | (string, start, end) | |
1436 | Lisp_Object string, start, end; | |
1437 | { | |
1438 | int startval, endval; | |
1439 | Lisp_Object tem; | |
1440 | ||
1441 | CHECK_STRING (string,0); | |
1442 | ||
265a9e55 | 1443 | if (NILP (end)) |
bed23cb2 | 1444 | endval = XSTRING (string)->size; |
078e7b4a | 1445 | else |
e28552a4 RS |
1446 | { |
1447 | CHECK_NUMBER (end, 2); | |
8028e0ed | 1448 | endval = XINT (end); |
bed23cb2 | 1449 | if (endval < 0 || endval > XSTRING (string)->size) |
078e7b4a JB |
1450 | args_out_of_range (string, end); |
1451 | } | |
1452 | ||
265a9e55 | 1453 | if (NILP (start)) |
078e7b4a JB |
1454 | startval = 0; |
1455 | else | |
e28552a4 RS |
1456 | { |
1457 | CHECK_NUMBER (start, 1); | |
8028e0ed | 1458 | startval = XINT (start); |
078e7b4a JB |
1459 | if (startval < 0 || startval > endval) |
1460 | args_out_of_range (string, start); | |
1461 | } | |
1462 | ||
1463 | read_from_string_index = startval; | |
bed23cb2 | 1464 | read_from_string_index_byte = string_char_to_byte (string, startval); |
078e7b4a JB |
1465 | read_from_string_limit = endval; |
1466 | ||
17634846 | 1467 | new_backquote_flag = 0; |
4ad679f9 | 1468 | read_objects = Qnil; |
17634846 | 1469 | |
078e7b4a | 1470 | tem = read0 (string); |
bed23cb2 | 1471 | return Fcons (tem, make_number (read_from_string_index)); |
078e7b4a JB |
1472 | } |
1473 | \f | |
6428369f KH |
1474 | /* Use this for recursive reads, in contexts where internal tokens |
1475 | are not allowed. */ | |
e28552a4 | 1476 | |
078e7b4a JB |
1477 | static Lisp_Object |
1478 | read0 (readcharfun) | |
1479 | Lisp_Object readcharfun; | |
1480 | { | |
1481 | register Lisp_Object val; | |
e28552a4 | 1482 | int c; |
078e7b4a | 1483 | |
17634846 | 1484 | val = read1 (readcharfun, &c, 0); |
6428369f | 1485 | if (c) |
93d75e4c RS |
1486 | Fsignal (Qinvalid_read_syntax, Fcons (Fmake_string (make_number (1), |
1487 | make_number (c)), | |
e28552a4 | 1488 | Qnil)); |
078e7b4a JB |
1489 | |
1490 | return val; | |
1491 | } | |
1492 | \f | |
1493 | static int read_buffer_size; | |
1494 | static char *read_buffer; | |
1495 | ||
fe0e03f3 KH |
1496 | /* Read multibyte form and return it as a character. C is a first |
1497 | byte of multibyte form, and rest of them are read from | |
1498 | READCHARFUN. */ | |
6f7f43d5 | 1499 | |
fe0e03f3 KH |
1500 | static int |
1501 | read_multibyte (c, readcharfun) | |
1502 | register int c; | |
1503 | Lisp_Object readcharfun; | |
1504 | { | |
1505 | /* We need the actual character code of this multibyte | |
1506 | characters. */ | |
449fea39 | 1507 | unsigned char str[MAX_MULTIBYTE_LENGTH]; |
fe0e03f3 KH |
1508 | int len = 0; |
1509 | ||
1510 | str[len++] = c; | |
1511 | while ((c = READCHAR) >= 0xA0 | |
449fea39 | 1512 | && len < MAX_MULTIBYTE_LENGTH) |
fe0e03f3 KH |
1513 | str[len++] = c; |
1514 | UNREAD (c); | |
1515 | return STRING_CHAR (str, len); | |
1516 | } | |
1517 | ||
6f7f43d5 RS |
1518 | /* Read a \-escape sequence, assuming we already read the `\'. */ |
1519 | ||
078e7b4a | 1520 | static int |
e7fc914b | 1521 | read_escape (readcharfun, stringp) |
078e7b4a | 1522 | Lisp_Object readcharfun; |
e7fc914b | 1523 | int stringp; |
078e7b4a JB |
1524 | { |
1525 | register int c = READCHAR; | |
1526 | switch (c) | |
1527 | { | |
f3849f25 RS |
1528 | case -1: |
1529 | error ("End of file"); | |
1530 | ||
078e7b4a | 1531 | case 'a': |
265a9e55 | 1532 | return '\007'; |
078e7b4a JB |
1533 | case 'b': |
1534 | return '\b'; | |
f405a585 RS |
1535 | case 'd': |
1536 | return 0177; | |
078e7b4a JB |
1537 | case 'e': |
1538 | return 033; | |
1539 | case 'f': | |
1540 | return '\f'; | |
1541 | case 'n': | |
1542 | return '\n'; | |
1543 | case 'r': | |
1544 | return '\r'; | |
1545 | case 't': | |
1546 | return '\t'; | |
1547 | case 'v': | |
1548 | return '\v'; | |
1549 | case '\n': | |
1550 | return -1; | |
e28552a4 | 1551 | case ' ': |
e7fc914b KH |
1552 | if (stringp) |
1553 | return -1; | |
1554 | return ' '; | |
078e7b4a JB |
1555 | |
1556 | case 'M': | |
1557 | c = READCHAR; | |
1558 | if (c != '-') | |
1559 | error ("Invalid escape character syntax"); | |
1560 | c = READCHAR; | |
1561 | if (c == '\\') | |
e7fc914b | 1562 | c = read_escape (readcharfun, 0); |
7bd279cd | 1563 | return c | meta_modifier; |
f405a585 RS |
1564 | |
1565 | case 'S': | |
1566 | c = READCHAR; | |
1567 | if (c != '-') | |
1568 | error ("Invalid escape character syntax"); | |
1569 | c = READCHAR; | |
1570 | if (c == '\\') | |
e7fc914b | 1571 | c = read_escape (readcharfun, 0); |
7bd279cd RS |
1572 | return c | shift_modifier; |
1573 | ||
1574 | case 'H': | |
1575 | c = READCHAR; | |
1576 | if (c != '-') | |
1577 | error ("Invalid escape character syntax"); | |
1578 | c = READCHAR; | |
1579 | if (c == '\\') | |
e7fc914b | 1580 | c = read_escape (readcharfun, 0); |
7bd279cd RS |
1581 | return c | hyper_modifier; |
1582 | ||
1583 | case 'A': | |
1584 | c = READCHAR; | |
1585 | if (c != '-') | |
1586 | error ("Invalid escape character syntax"); | |
1587 | c = READCHAR; | |
1588 | if (c == '\\') | |
e7fc914b | 1589 | c = read_escape (readcharfun, 0); |
7bd279cd RS |
1590 | return c | alt_modifier; |
1591 | ||
1592 | case 's': | |
1593 | c = READCHAR; | |
1594 | if (c != '-') | |
1595 | error ("Invalid escape character syntax"); | |
1596 | c = READCHAR; | |
1597 | if (c == '\\') | |
e7fc914b | 1598 | c = read_escape (readcharfun, 0); |
7bd279cd | 1599 | return c | super_modifier; |
078e7b4a JB |
1600 | |
1601 | case 'C': | |
1602 | c = READCHAR; | |
1603 | if (c != '-') | |
1604 | error ("Invalid escape character syntax"); | |
1605 | case '^': | |
1606 | c = READCHAR; | |
1607 | if (c == '\\') | |
e7fc914b | 1608 | c = read_escape (readcharfun, 0); |
164d590d KH |
1609 | if ((c & ~CHAR_MODIFIER_MASK) == '?') |
1610 | return 0177 | (c & CHAR_MODIFIER_MASK); | |
1611 | else if (! SINGLE_BYTE_CHAR_P ((c & ~CHAR_MODIFIER_MASK))) | |
1612 | return c | ctrl_modifier; | |
f405a585 RS |
1613 | /* ASCII control chars are made from letters (both cases), |
1614 | as well as the non-letters within 0100...0137. */ | |
1615 | else if ((c & 0137) >= 0101 && (c & 0137) <= 0132) | |
1616 | return (c & (037 | ~0177)); | |
1617 | else if ((c & 0177) >= 0100 && (c & 0177) <= 0137) | |
1618 | return (c & (037 | ~0177)); | |
078e7b4a | 1619 | else |
7bd279cd | 1620 | return c | ctrl_modifier; |
078e7b4a JB |
1621 | |
1622 | case '0': | |
1623 | case '1': | |
1624 | case '2': | |
1625 | case '3': | |
1626 | case '4': | |
1627 | case '5': | |
1628 | case '6': | |
1629 | case '7': | |
1630 | /* An octal escape, as in ANSI C. */ | |
1631 | { | |
1632 | register int i = c - '0'; | |
1633 | register int count = 0; | |
1634 | while (++count < 3) | |
1635 | { | |
1636 | if ((c = READCHAR) >= '0' && c <= '7') | |
1637 | { | |
1638 | i *= 8; | |
1639 | i += c - '0'; | |
1640 | } | |
1641 | else | |
1642 | { | |
1643 | UNREAD (c); | |
1644 | break; | |
1645 | } | |
1646 | } | |
1647 | return i; | |
1648 | } | |
1649 | ||
1650 | case 'x': | |
1651 | /* A hex escape, as in ANSI C. */ | |
1652 | { | |
1653 | int i = 0; | |
1654 | while (1) | |
1655 | { | |
1656 | c = READCHAR; | |
1657 | if (c >= '0' && c <= '9') | |
1658 | { | |
1659 | i *= 16; | |
1660 | i += c - '0'; | |
1661 | } | |
1662 | else if ((c >= 'a' && c <= 'f') | |
1663 | || (c >= 'A' && c <= 'F')) | |
1664 | { | |
1665 | i *= 16; | |
1666 | if (c >= 'a' && c <= 'f') | |
1667 | i += c - 'a' + 10; | |
1668 | else | |
1669 | i += c - 'A' + 10; | |
1670 | } | |
1671 | else | |
1672 | { | |
1673 | UNREAD (c); | |
1674 | break; | |
1675 | } | |
1676 | } | |
1677 | return i; | |
1678 | } | |
1679 | ||
1680 | default: | |
fe0e03f3 KH |
1681 | if (BASE_LEADING_CODE_P (c)) |
1682 | c = read_multibyte (c, readcharfun); | |
078e7b4a JB |
1683 | return c; |
1684 | } | |
1685 | } | |
1686 | ||
bf5d1a17 GM |
1687 | |
1688 | /* Read an integer in radix RADIX using READCHARFUN to read | |
1689 | characters. RADIX must be in the interval [2..36]; if it isn't, a | |
1690 | read error is signaled . Value is the integer read. Signals an | |
1691 | error if encountering invalid read syntax or if RADIX is out of | |
1692 | range. */ | |
1693 | ||
1694 | static Lisp_Object | |
1695 | read_integer (readcharfun, radix) | |
1696 | Lisp_Object readcharfun; | |
1697 | int radix; | |
1698 | { | |
5e37dc22 GM |
1699 | int ndigits = 0, invalid_p, c, sign = 0; |
1700 | EMACS_INT number = 0; | |
bf5d1a17 GM |
1701 | |
1702 | if (radix < 2 || radix > 36) | |
1703 | invalid_p = 1; | |
1704 | else | |
1705 | { | |
1706 | number = ndigits = invalid_p = 0; | |
1707 | sign = 1; | |
1708 | ||
1709 | c = READCHAR; | |
1710 | if (c == '-') | |
1711 | { | |
1712 | c = READCHAR; | |
1713 | sign = -1; | |
1714 | } | |
1715 | else if (c == '+') | |
1716 | c = READCHAR; | |
1717 | ||
1718 | while (c >= 0) | |
1719 | { | |
1720 | int digit; | |
1721 | ||
1722 | if (c >= '0' && c <= '9') | |
1723 | digit = c - '0'; | |
1724 | else if (c >= 'a' && c <= 'z') | |
1725 | digit = c - 'a' + 10; | |
1726 | else if (c >= 'A' && c <= 'Z') | |
1727 | digit = c - 'A' + 10; | |
1728 | else | |
b632fa48 GM |
1729 | { |
1730 | UNREAD (c); | |
1731 | break; | |
1732 | } | |
bf5d1a17 GM |
1733 | |
1734 | if (digit < 0 || digit >= radix) | |
1735 | invalid_p = 1; | |
1736 | ||
1737 | number = radix * number + digit; | |
1738 | ++ndigits; | |
1739 | c = READCHAR; | |
1740 | } | |
1741 | } | |
1742 | ||
1743 | if (ndigits == 0 || invalid_p) | |
1744 | { | |
1745 | char buf[50]; | |
1746 | sprintf (buf, "integer, radix %d", radix); | |
1747 | Fsignal (Qinvalid_read_syntax, Fcons (build_string (buf), Qnil)); | |
1748 | } | |
1749 | ||
1750 | return make_number (sign * number); | |
1751 | } | |
1752 | ||
1753 | ||
6428369f KH |
1754 | /* If the next token is ')' or ']' or '.', we store that character |
1755 | in *PCH and the return value is not interesting. Else, we store | |
17634846 RS |
1756 | zero in *PCH and we read and return one lisp object. |
1757 | ||
1758 | FIRST_IN_LIST is nonzero if this is the first element of a list. */ | |
1759 | ||
078e7b4a | 1760 | static Lisp_Object |
17634846 | 1761 | read1 (readcharfun, pch, first_in_list) |
078e7b4a | 1762 | register Lisp_Object readcharfun; |
e28552a4 | 1763 | int *pch; |
17634846 | 1764 | int first_in_list; |
078e7b4a JB |
1765 | { |
1766 | register int c; | |
4ad679f9 EN |
1767 | int uninterned_symbol = 0; |
1768 | ||
6428369f | 1769 | *pch = 0; |
078e7b4a JB |
1770 | |
1771 | retry: | |
1772 | ||
1773 | c = READCHAR; | |
9c97398c GM |
1774 | if (c < 0) |
1775 | end_of_file_error (); | |
078e7b4a JB |
1776 | |
1777 | switch (c) | |
1778 | { | |
1779 | case '(': | |
1780 | return read_list (0, readcharfun); | |
1781 | ||
1782 | case '[': | |
c15cfd1f | 1783 | return read_vector (readcharfun, 0); |
078e7b4a JB |
1784 | |
1785 | case ')': | |
1786 | case ']': | |
078e7b4a | 1787 | { |
6428369f KH |
1788 | *pch = c; |
1789 | return Qnil; | |
078e7b4a JB |
1790 | } |
1791 | ||
1792 | case '#': | |
200f684e | 1793 | c = READCHAR; |
c2390933 RS |
1794 | if (c == '^') |
1795 | { | |
1796 | c = READCHAR; | |
1797 | if (c == '[') | |
1798 | { | |
1799 | Lisp_Object tmp; | |
c15cfd1f | 1800 | tmp = read_vector (readcharfun, 0); |
c2390933 RS |
1801 | if (XVECTOR (tmp)->size < CHAR_TABLE_STANDARD_SLOTS |
1802 | || XVECTOR (tmp)->size > CHAR_TABLE_STANDARD_SLOTS + 10) | |
1803 | error ("Invalid size char-table"); | |
1804 | XSETCHAR_TABLE (tmp, XCHAR_TABLE (tmp)); | |
3701b5de | 1805 | XCHAR_TABLE (tmp)->top = Qt; |
c2390933 RS |
1806 | return tmp; |
1807 | } | |
3701b5de KH |
1808 | else if (c == '^') |
1809 | { | |
1810 | c = READCHAR; | |
1811 | if (c == '[') | |
1812 | { | |
1813 | Lisp_Object tmp; | |
c15cfd1f | 1814 | tmp = read_vector (readcharfun, 0); |
3701b5de KH |
1815 | if (XVECTOR (tmp)->size != SUB_CHAR_TABLE_STANDARD_SLOTS) |
1816 | error ("Invalid size char-table"); | |
1817 | XSETCHAR_TABLE (tmp, XCHAR_TABLE (tmp)); | |
1818 | XCHAR_TABLE (tmp)->top = Qnil; | |
1819 | return tmp; | |
1820 | } | |
1821 | Fsignal (Qinvalid_read_syntax, | |
1822 | Fcons (make_string ("#^^", 3), Qnil)); | |
1823 | } | |
c2390933 RS |
1824 | Fsignal (Qinvalid_read_syntax, Fcons (make_string ("#^", 2), Qnil)); |
1825 | } | |
1826 | if (c == '&') | |
1827 | { | |
1828 | Lisp_Object length; | |
1829 | length = read1 (readcharfun, pch, first_in_list); | |
1830 | c = READCHAR; | |
1831 | if (c == '"') | |
1832 | { | |
1833 | Lisp_Object tmp, val; | |
90ed3ec5 | 1834 | int size_in_chars = ((XFASTINT (length) + BITS_PER_CHAR - 1) |
68be917d | 1835 | / BITS_PER_CHAR); |
c2390933 RS |
1836 | |
1837 | UNREAD (c); | |
1838 | tmp = read1 (readcharfun, pch, first_in_list); | |
90ed3ec5 RS |
1839 | if (size_in_chars != XSTRING (tmp)->size |
1840 | /* We used to print 1 char too many | |
1841 | when the number of bits was a multiple of 8. | |
1842 | Accept such input in case it came from an old version. */ | |
1843 | && ! (XFASTINT (length) | |
1844 | == (XSTRING (tmp)->size - 1) * BITS_PER_CHAR)) | |
c2390933 | 1845 | Fsignal (Qinvalid_read_syntax, |
ec3bbd7d | 1846 | Fcons (make_string ("#&...", 5), Qnil)); |
c2390933 RS |
1847 | |
1848 | val = Fmake_bool_vector (length, Qnil); | |
1849 | bcopy (XSTRING (tmp)->data, XBOOL_VECTOR (val)->data, | |
1850 | size_in_chars); | |
67d3b149 EZ |
1851 | /* Clear the extraneous bits in the last byte. */ |
1852 | if (XINT (length) != size_in_chars * BITS_PER_CHAR) | |
1853 | XBOOL_VECTOR (val)->data[size_in_chars - 1] | |
1854 | &= (1 << (XINT (length) % BITS_PER_CHAR)) - 1; | |
c2390933 RS |
1855 | return val; |
1856 | } | |
ec3bbd7d | 1857 | Fsignal (Qinvalid_read_syntax, Fcons (make_string ("#&...", 5), |
039dc30b | 1858 | Qnil)); |
c2390933 | 1859 | } |
200f684e RS |
1860 | if (c == '[') |
1861 | { | |
1862 | /* Accept compiled functions at read-time so that we don't have to | |
1863 | build them using function calls. */ | |
748ef62f | 1864 | Lisp_Object tmp; |
c15cfd1f | 1865 | tmp = read_vector (readcharfun, 1); |
748ef62f RS |
1866 | return Fmake_byte_code (XVECTOR (tmp)->size, |
1867 | XVECTOR (tmp)->contents); | |
200f684e | 1868 | } |
748ef62f RS |
1869 | if (c == '(') |
1870 | { | |
1871 | Lisp_Object tmp; | |
1872 | struct gcpro gcpro1; | |
e28552a4 | 1873 | int ch; |
748ef62f RS |
1874 | |
1875 | /* Read the string itself. */ | |
17634846 | 1876 | tmp = read1 (readcharfun, &ch, 0); |
6428369f | 1877 | if (ch != 0 || !STRINGP (tmp)) |
748ef62f RS |
1878 | Fsignal (Qinvalid_read_syntax, Fcons (make_string ("#", 1), Qnil)); |
1879 | GCPRO1 (tmp); | |
1880 | /* Read the intervals and their properties. */ | |
1881 | while (1) | |
1882 | { | |
1883 | Lisp_Object beg, end, plist; | |
1884 | ||
17634846 | 1885 | beg = read1 (readcharfun, &ch, 0); |
7ee3bd7b | 1886 | end = plist = Qnil; |
6428369f KH |
1887 | if (ch == ')') |
1888 | break; | |
1889 | if (ch == 0) | |
17634846 | 1890 | end = read1 (readcharfun, &ch, 0); |
6428369f | 1891 | if (ch == 0) |
17634846 | 1892 | plist = read1 (readcharfun, &ch, 0); |
6428369f | 1893 | if (ch) |
748ef62f | 1894 | Fsignal (Qinvalid_read_syntax, |
6428369f KH |
1895 | Fcons (build_string ("invalid string property list"), |
1896 | Qnil)); | |
748ef62f RS |
1897 | Fset_text_properties (beg, end, plist, tmp); |
1898 | } | |
1899 | UNGCPRO; | |
1900 | return tmp; | |
1901 | } | |
339ee979 | 1902 | |
20ea2964 RS |
1903 | /* #@NUMBER is used to skip NUMBER following characters. |
1904 | That's used in .elc files to skip over doc strings | |
1905 | and function definitions. */ | |
1906 | if (c == '@') | |
1907 | { | |
1908 | int i, nskip = 0; | |
1909 | ||
1910 | /* Read a decimal integer. */ | |
1911 | while ((c = READCHAR) >= 0 | |
1912 | && c >= '0' && c <= '9') | |
1913 | { | |
1914 | nskip *= 10; | |
1915 | nskip += c - '0'; | |
1916 | } | |
1917 | if (c >= 0) | |
1918 | UNREAD (c); | |
1919 | ||
b2a30870 RS |
1920 | if (load_force_doc_strings && EQ (readcharfun, Qget_file_char)) |
1921 | { | |
1922 | /* If we are supposed to force doc strings into core right now, | |
1923 | record the last string that we skipped, | |
1924 | and record where in the file it comes from. */ | |
c15cfd1f RS |
1925 | |
1926 | /* But first exchange saved_doc_string | |
1927 | with prev_saved_doc_string, so we save two strings. */ | |
1928 | { | |
1929 | char *temp = saved_doc_string; | |
1930 | int temp_size = saved_doc_string_size; | |
68c45bf0 | 1931 | file_offset temp_pos = saved_doc_string_position; |
c15cfd1f RS |
1932 | int temp_len = saved_doc_string_length; |
1933 | ||
1934 | saved_doc_string = prev_saved_doc_string; | |
1935 | saved_doc_string_size = prev_saved_doc_string_size; | |
1936 | saved_doc_string_position = prev_saved_doc_string_position; | |
1937 | saved_doc_string_length = prev_saved_doc_string_length; | |
1938 | ||
1939 | prev_saved_doc_string = temp; | |
1940 | prev_saved_doc_string_size = temp_size; | |
1941 | prev_saved_doc_string_position = temp_pos; | |
1942 | prev_saved_doc_string_length = temp_len; | |
1943 | } | |
1944 | ||
b2a30870 RS |
1945 | if (saved_doc_string_size == 0) |
1946 | { | |
1947 | saved_doc_string_size = nskip + 100; | |
11938f10 | 1948 | saved_doc_string = (char *) xmalloc (saved_doc_string_size); |
b2a30870 RS |
1949 | } |
1950 | if (nskip > saved_doc_string_size) | |
1951 | { | |
1952 | saved_doc_string_size = nskip + 100; | |
11938f10 KH |
1953 | saved_doc_string = (char *) xrealloc (saved_doc_string, |
1954 | saved_doc_string_size); | |
b2a30870 RS |
1955 | } |
1956 | ||
68c45bf0 | 1957 | saved_doc_string_position = file_tell (instream); |
b2a30870 RS |
1958 | |
1959 | /* Copy that many characters into saved_doc_string. */ | |
1960 | for (i = 0; i < nskip && c >= 0; i++) | |
1961 | saved_doc_string[i] = c = READCHAR; | |
1962 | ||
1963 | saved_doc_string_length = i; | |
1964 | } | |
1965 | else | |
b2a30870 RS |
1966 | { |
1967 | /* Skip that many characters. */ | |
1968 | for (i = 0; i < nskip && c >= 0; i++) | |
1969 | c = READCHAR; | |
1970 | } | |
d49f0c1a | 1971 | |
20ea2964 RS |
1972 | goto retry; |
1973 | } | |
1974 | if (c == '$') | |
1975 | return Vload_file_name; | |
2b6cae0c RS |
1976 | if (c == '\'') |
1977 | return Fcons (Qfunction, Fcons (read0 (readcharfun), Qnil)); | |
4ad679f9 EN |
1978 | /* #:foo is the uninterned symbol named foo. */ |
1979 | if (c == ':') | |
1980 | { | |
1981 | uninterned_symbol = 1; | |
1982 | c = READCHAR; | |
1983 | goto default_label; | |
1984 | } | |
1985 | /* Reader forms that can reuse previously read objects. */ | |
1986 | if (c >= '0' && c <= '9') | |
1987 | { | |
1988 | int n = 0; | |
1989 | Lisp_Object tem; | |
2b6cae0c | 1990 | |
4ad679f9 EN |
1991 | /* Read a non-negative integer. */ |
1992 | while (c >= '0' && c <= '9') | |
1993 | { | |
1994 | n *= 10; | |
1995 | n += c - '0'; | |
1996 | c = READCHAR; | |
1997 | } | |
1998 | /* #n=object returns object, but associates it with n for #n#. */ | |
1999 | if (c == '=') | |
2000 | { | |
9e062b6c RS |
2001 | /* Make a placeholder for #n# to use temporarily */ |
2002 | Lisp_Object placeholder; | |
2003 | Lisp_Object cell; | |
2004 | ||
2005 | placeholder = Fcons(Qnil, Qnil); | |
2006 | cell = Fcons (make_number (n), placeholder); | |
2007 | read_objects = Fcons (cell, read_objects); | |
2008 | ||
2009 | /* Read the object itself. */ | |
4ad679f9 | 2010 | tem = read0 (readcharfun); |
9e062b6c RS |
2011 | |
2012 | /* Now put it everywhere the placeholder was... */ | |
2013 | substitute_object_in_subtree (tem, placeholder); | |
2014 | ||
2015 | /* ...and #n# will use the real value from now on. */ | |
2016 | Fsetcdr (cell, tem); | |
2017 | ||
4ad679f9 EN |
2018 | return tem; |
2019 | } | |
2020 | /* #n# returns a previously read object. */ | |
2021 | if (c == '#') | |
2022 | { | |
2023 | tem = Fassq (make_number (n), read_objects); | |
2024 | if (CONSP (tem)) | |
2025 | return XCDR (tem); | |
2026 | /* Fall through to error message. */ | |
2027 | } | |
bf5d1a17 GM |
2028 | else if (c == 'r' || c == 'R') |
2029 | return read_integer (readcharfun, n); | |
2030 | ||
4ad679f9 EN |
2031 | /* Fall through to error message. */ |
2032 | } | |
bf5d1a17 GM |
2033 | else if (c == 'x' || c == 'X') |
2034 | return read_integer (readcharfun, 16); | |
2035 | else if (c == 'o' || c == 'O') | |
2036 | return read_integer (readcharfun, 8); | |
2037 | else if (c == 'b' || c == 'B') | |
2038 | return read_integer (readcharfun, 2); | |
20ea2964 | 2039 | |
200f684e | 2040 | UNREAD (c); |
748ef62f | 2041 | Fsignal (Qinvalid_read_syntax, Fcons (make_string ("#", 1), Qnil)); |
078e7b4a JB |
2042 | |
2043 | case ';': | |
2044 | while ((c = READCHAR) >= 0 && c != '\n'); | |
2045 | goto retry; | |
2046 | ||
2047 | case '\'': | |
2048 | { | |
2049 | return Fcons (Qquote, Fcons (read0 (readcharfun), Qnil)); | |
2050 | } | |
2051 | ||
17634846 RS |
2052 | case '`': |
2053 | if (first_in_list) | |
2054 | goto default_label; | |
2055 | else | |
2056 | { | |
2057 | Lisp_Object value; | |
2058 | ||
2059 | new_backquote_flag = 1; | |
2060 | value = read0 (readcharfun); | |
2061 | new_backquote_flag = 0; | |
2062 | ||
2063 | return Fcons (Qbackquote, Fcons (value, Qnil)); | |
2064 | } | |
2065 | ||
2066 | case ',': | |
2067 | if (new_backquote_flag) | |
2068 | { | |
2069 | Lisp_Object comma_type = Qnil; | |
2070 | Lisp_Object value; | |
2071 | int ch = READCHAR; | |
2072 | ||
2073 | if (ch == '@') | |
2074 | comma_type = Qcomma_at; | |
2075 | else if (ch == '.') | |
2076 | comma_type = Qcomma_dot; | |
2077 | else | |
2078 | { | |
2079 | if (ch >= 0) UNREAD (ch); | |
2080 | comma_type = Qcomma; | |
2081 | } | |
2082 | ||
2083 | new_backquote_flag = 0; | |
2084 | value = read0 (readcharfun); | |
2085 | new_backquote_flag = 1; | |
2086 | return Fcons (comma_type, Fcons (value, Qnil)); | |
2087 | } | |
2088 | else | |
2089 | goto default_label; | |
2090 | ||
078e7b4a JB |
2091 | case '?': |
2092 | { | |
078e7b4a | 2093 | c = READCHAR; |
9c97398c GM |
2094 | if (c < 0) |
2095 | end_of_file_error (); | |
078e7b4a JB |
2096 | |
2097 | if (c == '\\') | |
e7fc914b | 2098 | c = read_escape (readcharfun, 0); |
fe0e03f3 KH |
2099 | else if (BASE_LEADING_CODE_P (c)) |
2100 | c = read_multibyte (c, readcharfun); | |
078e7b4a | 2101 | |
6f7f43d5 | 2102 | return make_number (c); |
078e7b4a JB |
2103 | } |
2104 | ||
00a9a935 | 2105 | case '"': |
078e7b4a JB |
2106 | { |
2107 | register char *p = read_buffer; | |
2108 | register char *end = read_buffer + read_buffer_size; | |
2109 | register int c; | |
e7fc914b KH |
2110 | /* Nonzero if we saw an escape sequence specifying |
2111 | a multibyte character. */ | |
2112 | int force_multibyte = 0; | |
2113 | /* Nonzero if we saw an escape sequence specifying | |
2114 | a single-byte character. */ | |
2115 | int force_singlebyte = 0; | |
078e7b4a | 2116 | int cancel = 0; |
e7fc914b | 2117 | int nchars; |
078e7b4a JB |
2118 | |
2119 | while ((c = READCHAR) >= 0 | |
2120 | && c != '\"') | |
2121 | { | |
449fea39 | 2122 | if (end - p < MAX_MULTIBYTE_LENGTH) |
078e7b4a | 2123 | { |
5d65df0d GM |
2124 | int offset = p - read_buffer; |
2125 | read_buffer = (char *) xrealloc (read_buffer, | |
2126 | read_buffer_size *= 2); | |
2127 | p = read_buffer + offset; | |
078e7b4a JB |
2128 | end = read_buffer + read_buffer_size; |
2129 | } | |
bed23cb2 | 2130 | |
078e7b4a | 2131 | if (c == '\\') |
03e88613 | 2132 | { |
e7fc914b | 2133 | c = read_escape (readcharfun, 1); |
bed23cb2 RS |
2134 | |
2135 | /* C is -1 if \ newline has just been seen */ | |
2136 | if (c == -1) | |
03e88613 | 2137 | { |
bed23cb2 RS |
2138 | if (p == read_buffer) |
2139 | cancel = 1; | |
03e88613 RS |
2140 | continue; |
2141 | } | |
bed23cb2 | 2142 | |
94e554db RS |
2143 | /* If an escape specifies a non-ASCII single-byte character, |
2144 | this must be a unibyte string. */ | |
164d590d KH |
2145 | if (SINGLE_BYTE_CHAR_P ((c & ~CHAR_MODIFIER_MASK)) |
2146 | && ! ASCII_BYTE_P ((c & ~CHAR_MODIFIER_MASK))) | |
e7fc914b | 2147 | force_singlebyte = 1; |
03e88613 | 2148 | } |
6f7f43d5 | 2149 | |
164d590d | 2150 | if (! SINGLE_BYTE_CHAR_P ((c & ~CHAR_MODIFIER_MASK))) |
078e7b4a | 2151 | { |
164d590d KH |
2152 | /* Any modifiers for a multibyte character are invalid. */ |
2153 | if (c & CHAR_MODIFIER_MASK) | |
2154 | error ("Invalid modifier in string"); | |
449fea39 KH |
2155 | p += CHAR_STRING (c, p); |
2156 | force_multibyte = 1; | |
078e7b4a JB |
2157 | } |
2158 | else | |
f943104a | 2159 | { |
988c2f83 RS |
2160 | /* Allow `\C- ' and `\C-?'. */ |
2161 | if (c == (CHAR_CTL | ' ')) | |
2162 | c = 0; | |
2163 | else if (c == (CHAR_CTL | '?')) | |
2164 | c = 127; | |
2165 | ||
164d590d KH |
2166 | if (c & CHAR_SHIFT) |
2167 | { | |
2168 | /* Shift modifier is valid only with [A-Za-z]. */ | |
2169 | if ((c & 0377) >= 'A' && (c & 0377) <= 'Z') | |
2170 | c &= ~CHAR_SHIFT; | |
2171 | else if ((c & 0377) >= 'a' && (c & 0377) <= 'z') | |
2172 | c = (c & ~CHAR_SHIFT) - ('a' - 'A'); | |
2173 | } | |
2174 | ||
f943104a KH |
2175 | if (c & CHAR_META) |
2176 | /* Move the meta bit to the right place for a string. */ | |
2177 | c = (c & ~CHAR_META) | 0x80; | |
2178 | if (c & ~0xff) | |
2179 | error ("Invalid modifier in string"); | |
2180 | *p++ = c; | |
2181 | } | |
078e7b4a | 2182 | } |
6f7f43d5 | 2183 | if (c < 0) |
9c97398c | 2184 | end_of_file_error (); |
078e7b4a JB |
2185 | |
2186 | /* If purifying, and string starts with \ newline, | |
2187 | return zero instead. This is for doc strings | |
08564963 | 2188 | that we are really going to find in etc/DOC.nn.nn */ |
265a9e55 | 2189 | if (!NILP (Vpurify_flag) && NILP (Vdoc_file_name) && cancel) |
078e7b4a JB |
2190 | return make_number (0); |
2191 | ||
6f46329a | 2192 | if (force_multibyte) |
f0354c03 KH |
2193 | p = read_buffer + str_as_multibyte (read_buffer, end - read_buffer, |
2194 | p - read_buffer, &nchars); | |
6f46329a RS |
2195 | else if (force_singlebyte) |
2196 | nchars = p - read_buffer; | |
94e554db RS |
2197 | else if (load_convert_to_unibyte) |
2198 | { | |
2199 | Lisp_Object string; | |
f0354c03 KH |
2200 | p = read_buffer + str_as_multibyte (read_buffer, end - read_buffer, |
2201 | p - read_buffer, &nchars); | |
94e554db RS |
2202 | if (p - read_buffer != nchars) |
2203 | { | |
2204 | string = make_multibyte_string (read_buffer, nchars, | |
2205 | p - read_buffer); | |
2206 | return Fstring_make_unibyte (string); | |
2207 | } | |
2208 | } | |
8db9dc66 RS |
2209 | else if (EQ (readcharfun, Qget_file_char) |
2210 | || EQ (readcharfun, Qlambda)) | |
f0354c03 KH |
2211 | /* Nowadays, reading directly from a file is used only for |
2212 | compiled Emacs Lisp files, and those always use the | |
2213 | Emacs internal encoding. Meanwhile, Qlambda is used | |
2214 | for reading dynamic byte code (compiled with | |
2215 | byte-compile-dynamic = t). */ | |
2216 | p = read_buffer + str_as_multibyte (read_buffer, end - read_buffer, | |
2217 | p - read_buffer, &nchars); | |
e28552a4 | 2218 | else |
bed23cb2 RS |
2219 | /* In all other cases, if we read these bytes as |
2220 | separate characters, treat them as separate characters now. */ | |
e7fc914b KH |
2221 | nchars = p - read_buffer; |
2222 | ||
2223 | if (read_pure) | |
491f16a2 RS |
2224 | return make_pure_string (read_buffer, nchars, p - read_buffer, |
2225 | (force_multibyte | |
2226 | || (p - read_buffer != nchars))); | |
2227 | return make_specified_string (read_buffer, nchars, p - read_buffer, | |
2228 | (force_multibyte | |
2229 | || (p - read_buffer != nchars))); | |
078e7b4a JB |
2230 | } |
2231 | ||
109d300c JB |
2232 | case '.': |
2233 | { | |
109d300c JB |
2234 | int next_char = READCHAR; |
2235 | UNREAD (next_char); | |
2236 | ||
035eec48 GM |
2237 | if (next_char <= 040 |
2238 | || index ("\"'`,(", next_char)) | |
109d300c | 2239 | { |
6428369f KH |
2240 | *pch = c; |
2241 | return Qnil; | |
109d300c JB |
2242 | } |
2243 | ||
2244 | /* Otherwise, we fall through! Note that the atom-reading loop | |
2245 | below will now loop at least once, assuring that we will not | |
2246 | try to UNREAD two characters in a row. */ | |
2247 | } | |
078e7b4a | 2248 | default: |
17634846 | 2249 | default_label: |
078e7b4a JB |
2250 | if (c <= 040) goto retry; |
2251 | { | |
38404229 | 2252 | char *p = read_buffer; |
481c6336 | 2253 | int quoted = 0; |
078e7b4a JB |
2254 | |
2255 | { | |
38404229 | 2256 | char *end = read_buffer + read_buffer_size; |
078e7b4a | 2257 | |
6f7f43d5 | 2258 | while (c > 040 |
38404229 | 2259 | && !(c == '\"' || c == '\'' || c == ';' |
6f7f43d5 | 2260 | || c == '(' || c == ')' |
38404229 | 2261 | || c == '[' || c == ']' || c == '#')) |
078e7b4a | 2262 | { |
449fea39 | 2263 | if (end - p < MAX_MULTIBYTE_LENGTH) |
078e7b4a | 2264 | { |
5d65df0d GM |
2265 | int offset = p - read_buffer; |
2266 | read_buffer = (char *) xrealloc (read_buffer, | |
2267 | read_buffer_size *= 2); | |
2268 | p = read_buffer + offset; | |
078e7b4a JB |
2269 | end = read_buffer + read_buffer_size; |
2270 | } | |
38404229 | 2271 | |
078e7b4a | 2272 | if (c == '\\') |
481c6336 RS |
2273 | { |
2274 | c = READCHAR; | |
4ab11c09 GM |
2275 | if (c == -1) |
2276 | end_of_file_error (); | |
481c6336 RS |
2277 | quoted = 1; |
2278 | } | |
6f7f43d5 | 2279 | |
bed23cb2 | 2280 | if (! SINGLE_BYTE_CHAR_P (c)) |
449fea39 | 2281 | p += CHAR_STRING (c, p); |
bed23cb2 RS |
2282 | else |
2283 | *p++ = c; | |
6f7f43d5 | 2284 | |
078e7b4a JB |
2285 | c = READCHAR; |
2286 | } | |
2287 | ||
2288 | if (p == end) | |
2289 | { | |
5d65df0d GM |
2290 | int offset = p - read_buffer; |
2291 | read_buffer = (char *) xrealloc (read_buffer, | |
2292 | read_buffer_size *= 2); | |
2293 | p = read_buffer + offset; | |
2294 | end = read_buffer + read_buffer_size; | |
078e7b4a JB |
2295 | } |
2296 | *p = 0; | |
2297 | if (c >= 0) | |
2298 | UNREAD (c); | |
2299 | } | |
2300 | ||
4ad679f9 | 2301 | if (!quoted && !uninterned_symbol) |
481c6336 RS |
2302 | { |
2303 | register char *p1; | |
2304 | register Lisp_Object val; | |
2305 | p1 = read_buffer; | |
2306 | if (*p1 == '+' || *p1 == '-') p1++; | |
2307 | /* Is it an integer? */ | |
2308 | if (p1 != p) | |
2309 | { | |
2310 | while (p1 != p && (c = *p1) >= '0' && c <= '9') p1++; | |
481c6336 RS |
2311 | /* Integers can have trailing decimal points. */ |
2312 | if (p1 > read_buffer && p1 < p && *p1 == '.') p1++; | |
481c6336 RS |
2313 | if (p1 == p) |
2314 | /* It is an integer. */ | |
2315 | { | |
481c6336 RS |
2316 | if (p1[-1] == '.') |
2317 | p1[-1] = '\0'; | |
faca07fb RS |
2318 | if (sizeof (int) == sizeof (EMACS_INT)) |
2319 | XSETINT (val, atoi (read_buffer)); | |
2320 | else if (sizeof (long) == sizeof (EMACS_INT)) | |
2321 | XSETINT (val, atol (read_buffer)); | |
2322 | else | |
2323 | abort (); | |
481c6336 RS |
2324 | return val; |
2325 | } | |
2326 | } | |
481c6336 | 2327 | if (isfloat_string (read_buffer)) |
eb659c41 | 2328 | { |
a8972052 PE |
2329 | /* Compute NaN and infinities using 0.0 in a variable, |
2330 | to cope with compilers that think they are smarter | |
5e24a1f7 | 2331 | than we are. */ |
3c329963 | 2332 | double zero = 0.0; |
a8972052 PE |
2333 | |
2334 | double value; | |
2335 | ||
2336 | /* Negate the value ourselves. This treats 0, NaNs, | |
2337 | and infinity properly on IEEE floating point hosts, | |
2338 | and works around a common bug where atof ("-0.0") | |
2339 | drops the sign. */ | |
2340 | int negative = read_buffer[0] == '-'; | |
2341 | ||
2342 | /* The only way p[-1] can be 'F' or 'N', after isfloat_string | |
eb659c41 | 2343 | returns 1, is if the input ends in e+INF or e+NaN. */ |
a8972052 | 2344 | switch (p[-1]) |
eb659c41 | 2345 | { |
a8972052 PE |
2346 | case 'F': |
2347 | value = 1.0 / zero; | |
2348 | break; | |
2349 | case 'N': | |
2350 | value = zero / zero; | |
2351 | break; | |
2352 | default: | |
2353 | value = atof (read_buffer + negative); | |
2354 | break; | |
eb659c41 | 2355 | } |
a8972052 PE |
2356 | |
2357 | return make_float (negative ? - value : value); | |
eb659c41 | 2358 | } |
481c6336 | 2359 | } |
078e7b4a | 2360 | |
4ad679f9 EN |
2361 | if (uninterned_symbol) |
2362 | return make_symbol (read_buffer); | |
2363 | else | |
2364 | return intern (read_buffer); | |
078e7b4a JB |
2365 | } |
2366 | } | |
2367 | } | |
2368 | \f | |
9e062b6c RS |
2369 | |
2370 | /* List of nodes we've seen during substitute_object_in_subtree. */ | |
2371 | static Lisp_Object seen_list; | |
2372 | ||
2373 | static void | |
2374 | substitute_object_in_subtree (object, placeholder) | |
2375 | Lisp_Object object; | |
2376 | Lisp_Object placeholder; | |
2377 | { | |
2378 | Lisp_Object check_object; | |
2379 | ||
2380 | /* We haven't seen any objects when we start. */ | |
2381 | seen_list = Qnil; | |
2382 | ||
2383 | /* Make all the substitutions. */ | |
2384 | check_object | |
2385 | = substitute_object_recurse (object, placeholder, object); | |
2386 | ||
2387 | /* Clear seen_list because we're done with it. */ | |
2388 | seen_list = Qnil; | |
2389 | ||
2390 | /* The returned object here is expected to always eq the | |
2391 | original. */ | |
2392 | if (!EQ (check_object, object)) | |
2393 | error ("Unexpected mutation error in reader"); | |
2394 | } | |
2395 | ||
2396 | /* Feval doesn't get called from here, so no gc protection is needed. */ | |
2397 | #define SUBSTITUTE(get_val, set_val) \ | |
2398 | { \ | |
2399 | Lisp_Object old_value = get_val; \ | |
2400 | Lisp_Object true_value \ | |
2401 | = substitute_object_recurse (object, placeholder,\ | |
2402 | old_value); \ | |
2403 | \ | |
2404 | if (!EQ (old_value, true_value)) \ | |
2405 | { \ | |
2406 | set_val; \ | |
2407 | } \ | |
2408 | } | |
2409 | ||
2410 | static Lisp_Object | |
2411 | substitute_object_recurse (object, placeholder, subtree) | |
2412 | Lisp_Object object; | |
2413 | Lisp_Object placeholder; | |
2414 | Lisp_Object subtree; | |
2415 | { | |
2416 | /* If we find the placeholder, return the target object. */ | |
2417 | if (EQ (placeholder, subtree)) | |
2418 | return object; | |
2419 | ||
2420 | /* If we've been to this node before, don't explore it again. */ | |
2421 | if (!EQ (Qnil, Fmemq (subtree, seen_list))) | |
2422 | return subtree; | |
2423 | ||
2424 | /* If this node can be the entry point to a cycle, remember that | |
2425 | we've seen it. It can only be such an entry point if it was made | |
2426 | by #n=, which means that we can find it as a value in | |
2427 | read_objects. */ | |
2428 | if (!EQ (Qnil, Frassq (subtree, read_objects))) | |
2429 | seen_list = Fcons (subtree, seen_list); | |
2430 | ||
2431 | /* Recurse according to subtree's type. | |
2432 | Every branch must return a Lisp_Object. */ | |
2433 | switch (XTYPE (subtree)) | |
2434 | { | |
2435 | case Lisp_Vectorlike: | |
2436 | { | |
2437 | int i; | |
7c752c80 | 2438 | int length = XINT (Flength(subtree)); |
9e062b6c RS |
2439 | for (i = 0; i < length; i++) |
2440 | { | |
2441 | Lisp_Object idx = make_number (i); | |
2442 | SUBSTITUTE (Faref (subtree, idx), | |
2443 | Faset (subtree, idx, true_value)); | |
2444 | } | |
2445 | return subtree; | |
2446 | } | |
2447 | ||
2448 | case Lisp_Cons: | |
2449 | { | |
2450 | SUBSTITUTE (Fcar_safe (subtree), | |
2451 | Fsetcar (subtree, true_value)); | |
2452 | SUBSTITUTE (Fcdr_safe (subtree), | |
2453 | Fsetcdr (subtree, true_value)); | |
2454 | return subtree; | |
2455 | } | |
2456 | ||
9e062b6c RS |
2457 | case Lisp_String: |
2458 | { | |
2459 | /* Check for text properties in each interval. | |
2460 | substitute_in_interval contains part of the logic. */ | |
2461 | ||
2462 | INTERVAL root_interval = XSTRING (subtree)->intervals; | |
2463 | Lisp_Object arg = Fcons (object, placeholder); | |
2464 | ||
2465 | traverse_intervals (root_interval, 1, 0, | |
2466 | &substitute_in_interval, arg); | |
2467 | ||
2468 | return subtree; | |
2469 | } | |
9e062b6c RS |
2470 | |
2471 | /* Other types don't recurse any further. */ | |
2472 | default: | |
2473 | return subtree; | |
2474 | } | |
2475 | } | |
2476 | ||
2477 | /* Helper function for substitute_object_recurse. */ | |
2478 | static void | |
2479 | substitute_in_interval (interval, arg) | |
2480 | INTERVAL interval; | |
2481 | Lisp_Object arg; | |
2482 | { | |
2483 | Lisp_Object object = Fcar (arg); | |
2484 | Lisp_Object placeholder = Fcdr (arg); | |
2485 | ||
2486 | SUBSTITUTE(interval->plist, interval->plist = true_value); | |
2487 | } | |
2488 | ||
2489 | \f | |
078e7b4a JB |
2490 | #define LEAD_INT 1 |
2491 | #define DOT_CHAR 2 | |
2492 | #define TRAIL_INT 4 | |
2493 | #define E_CHAR 8 | |
2494 | #define EXP_INT 16 | |
2495 | ||
2496 | int | |
2497 | isfloat_string (cp) | |
2498 | register char *cp; | |
2499 | { | |
c1a2f60a | 2500 | register int state; |
078e7b4a | 2501 | |
d8578e58 RS |
2502 | char *start = cp; |
2503 | ||
078e7b4a JB |
2504 | state = 0; |
2505 | if (*cp == '+' || *cp == '-') | |
2506 | cp++; | |
2507 | ||
075027b1 | 2508 | if (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
2509 | { |
2510 | state |= LEAD_INT; | |
075027b1 RS |
2511 | while (*cp >= '0' && *cp <= '9') |
2512 | cp++; | |
078e7b4a JB |
2513 | } |
2514 | if (*cp == '.') | |
2515 | { | |
2516 | state |= DOT_CHAR; | |
2517 | cp++; | |
2518 | } | |
075027b1 | 2519 | if (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
2520 | { |
2521 | state |= TRAIL_INT; | |
075027b1 | 2522 | while (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
2523 | cp++; |
2524 | } | |
a35f88bf | 2525 | if (*cp == 'e' || *cp == 'E') |
078e7b4a JB |
2526 | { |
2527 | state |= E_CHAR; | |
2528 | cp++; | |
e73997a1 RS |
2529 | if (*cp == '+' || *cp == '-') |
2530 | cp++; | |
078e7b4a | 2531 | } |
078e7b4a | 2532 | |
075027b1 | 2533 | if (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
2534 | { |
2535 | state |= EXP_INT; | |
075027b1 | 2536 | while (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
2537 | cp++; |
2538 | } | |
d8578e58 RS |
2539 | else if (cp == start) |
2540 | ; | |
eb659c41 RS |
2541 | else if (cp[-1] == '+' && cp[0] == 'I' && cp[1] == 'N' && cp[2] == 'F') |
2542 | { | |
2543 | state |= EXP_INT; | |
2544 | cp += 3; | |
2545 | } | |
2546 | else if (cp[-1] == '+' && cp[0] == 'N' && cp[1] == 'a' && cp[2] == 'N') | |
2547 | { | |
2548 | state |= EXP_INT; | |
2549 | cp += 3; | |
2550 | } | |
2551 | ||
37579d7c | 2552 | return (((*cp == 0) || (*cp == ' ') || (*cp == '\t') || (*cp == '\n') || (*cp == '\r') || (*cp == '\f')) |
078e7b4a | 2553 | && (state == (LEAD_INT|DOT_CHAR|TRAIL_INT) |
151bdc83 | 2554 | || state == (DOT_CHAR|TRAIL_INT) |
078e7b4a | 2555 | || state == (LEAD_INT|E_CHAR|EXP_INT) |
151bdc83 JB |
2556 | || state == (LEAD_INT|DOT_CHAR|TRAIL_INT|E_CHAR|EXP_INT) |
2557 | || state == (DOT_CHAR|TRAIL_INT|E_CHAR|EXP_INT))); | |
078e7b4a | 2558 | } |
cc94f3b2 | 2559 | |
078e7b4a JB |
2560 | \f |
2561 | static Lisp_Object | |
c15cfd1f | 2562 | read_vector (readcharfun, bytecodeflag) |
078e7b4a | 2563 | Lisp_Object readcharfun; |
c15cfd1f | 2564 | int bytecodeflag; |
078e7b4a JB |
2565 | { |
2566 | register int i; | |
2567 | register int size; | |
2568 | register Lisp_Object *ptr; | |
c15cfd1f | 2569 | register Lisp_Object tem, item, vector; |
078e7b4a JB |
2570 | register struct Lisp_Cons *otem; |
2571 | Lisp_Object len; | |
2572 | ||
2573 | tem = read_list (1, readcharfun); | |
2574 | len = Flength (tem); | |
2575 | vector = (read_pure ? make_pure_vector (XINT (len)) : Fmake_vector (len, Qnil)); | |
2576 | ||
078e7b4a JB |
2577 | size = XVECTOR (vector)->size; |
2578 | ptr = XVECTOR (vector)->contents; | |
2579 | for (i = 0; i < size; i++) | |
2580 | { | |
c15cfd1f RS |
2581 | item = Fcar (tem); |
2582 | /* If `load-force-doc-strings' is t when reading a lazily-loaded | |
2583 | bytecode object, the docstring containing the bytecode and | |
2584 | constants values must be treated as unibyte and passed to | |
2585 | Fread, to get the actual bytecode string and constants vector. */ | |
2586 | if (bytecodeflag && load_force_doc_strings) | |
2587 | { | |
2588 | if (i == COMPILED_BYTECODE) | |
2589 | { | |
2590 | if (!STRINGP (item)) | |
2591 | error ("invalid byte code"); | |
2592 | ||
2593 | /* Delay handling the bytecode slot until we know whether | |
2594 | it is lazily-loaded (we can tell by whether the | |
2595 | constants slot is nil). */ | |
2596 | ptr[COMPILED_CONSTANTS] = item; | |
2597 | item = Qnil; | |
2598 | } | |
2599 | else if (i == COMPILED_CONSTANTS) | |
2600 | { | |
2601 | Lisp_Object bytestr = ptr[COMPILED_CONSTANTS]; | |
2602 | ||
2603 | if (NILP (item)) | |
2604 | { | |
2605 | /* Coerce string to unibyte (like string-as-unibyte, | |
2606 | but without generating extra garbage and | |
2607 | guaranteeing no change in the contents). */ | |
2608 | XSTRING (bytestr)->size = STRING_BYTES (XSTRING (bytestr)); | |
2609 | SET_STRING_BYTES (XSTRING (bytestr), -1); | |
2610 | ||
2611 | item = Fread (bytestr); | |
2612 | if (!CONSP (item)) | |
2613 | error ("invalid byte code"); | |
2614 | ||
2615 | otem = XCONS (item); | |
c1d497be KR |
2616 | bytestr = XCAR (item); |
2617 | item = XCDR (item); | |
c15cfd1f RS |
2618 | free_cons (otem); |
2619 | } | |
2620 | ||
2621 | /* Now handle the bytecode slot. */ | |
2622 | ptr[COMPILED_BYTECODE] = read_pure ? Fpurecopy (bytestr) : bytestr; | |
2623 | } | |
2624 | } | |
2625 | ptr[i] = read_pure ? Fpurecopy (item) : item; | |
078e7b4a JB |
2626 | otem = XCONS (tem); |
2627 | tem = Fcdr (tem); | |
2628 | free_cons (otem); | |
2629 | } | |
2630 | return vector; | |
2631 | } | |
2632 | ||
6f7f43d5 RS |
2633 | /* FLAG = 1 means check for ] to terminate rather than ) and . |
2634 | FLAG = -1 means check for starting with defun | |
078e7b4a JB |
2635 | and make structure pure. */ |
2636 | ||
2637 | static Lisp_Object | |
2638 | read_list (flag, readcharfun) | |
2639 | int flag; | |
2640 | register Lisp_Object readcharfun; | |
2641 | { | |
2642 | /* -1 means check next element for defun, | |
2643 | 0 means don't check, | |
2644 | 1 means already checked and found defun. */ | |
2645 | int defunflag = flag < 0 ? -1 : 0; | |
2646 | Lisp_Object val, tail; | |
2647 | register Lisp_Object elt, tem; | |
2648 | struct gcpro gcpro1, gcpro2; | |
821d417e | 2649 | /* 0 is the normal case. |
b2a30870 RS |
2650 | 1 means this list is a doc reference; replace it with the number 0. |
2651 | 2 means this list is a doc reference; replace it with the doc string. */ | |
821d417e | 2652 | int doc_reference = 0; |
078e7b4a | 2653 | |
17634846 RS |
2654 | /* Initialize this to 1 if we are reading a list. */ |
2655 | int first_in_list = flag <= 0; | |
2656 | ||
078e7b4a JB |
2657 | val = Qnil; |
2658 | tail = Qnil; | |
2659 | ||
2660 | while (1) | |
2661 | { | |
e28552a4 | 2662 | int ch; |
078e7b4a | 2663 | GCPRO2 (val, tail); |
17634846 | 2664 | elt = read1 (readcharfun, &ch, first_in_list); |
078e7b4a | 2665 | UNGCPRO; |
20ea2964 | 2666 | |
17634846 RS |
2667 | first_in_list = 0; |
2668 | ||
821d417e | 2669 | /* While building, if the list starts with #$, treat it specially. */ |
20ea2964 | 2670 | if (EQ (elt, Vload_file_name) |
d49f0c1a | 2671 | && ! NILP (elt) |
821d417e RS |
2672 | && !NILP (Vpurify_flag)) |
2673 | { | |
2674 | if (NILP (Vdoc_file_name)) | |
2675 | /* We have not yet called Snarf-documentation, so assume | |
2676 | this file is described in the DOC-MM.NN file | |
2677 | and Snarf-documentation will fill in the right value later. | |
2678 | For now, replace the whole list with 0. */ | |
2679 | doc_reference = 1; | |
2680 | else | |
2681 | /* We have already called Snarf-documentation, so make a relative | |
2682 | file name for this file, so it can be found properly | |
2683 | in the installed Lisp directory. | |
2684 | We don't use Fexpand_file_name because that would make | |
2685 | the directory absolute now. */ | |
2686 | elt = concat2 (build_string ("../lisp/"), | |
2687 | Ffile_name_nondirectory (elt)); | |
2688 | } | |
b2a30870 | 2689 | else if (EQ (elt, Vload_file_name) |
d49f0c1a | 2690 | && ! NILP (elt) |
b2a30870 RS |
2691 | && load_force_doc_strings) |
2692 | doc_reference = 2; | |
20ea2964 | 2693 | |
6428369f | 2694 | if (ch) |
078e7b4a JB |
2695 | { |
2696 | if (flag > 0) | |
2697 | { | |
6428369f | 2698 | if (ch == ']') |
078e7b4a | 2699 | return val; |
821d417e RS |
2700 | Fsignal (Qinvalid_read_syntax, |
2701 | Fcons (make_string (") or . in a vector", 18), Qnil)); | |
078e7b4a | 2702 | } |
6428369f | 2703 | if (ch == ')') |
078e7b4a | 2704 | return val; |
6428369f | 2705 | if (ch == '.') |
078e7b4a JB |
2706 | { |
2707 | GCPRO2 (val, tail); | |
265a9e55 | 2708 | if (!NILP (tail)) |
c1d497be | 2709 | XCDR (tail) = read0 (readcharfun); |
078e7b4a JB |
2710 | else |
2711 | val = read0 (readcharfun); | |
17634846 | 2712 | read1 (readcharfun, &ch, 0); |
078e7b4a | 2713 | UNGCPRO; |
6428369f | 2714 | if (ch == ')') |
821d417e RS |
2715 | { |
2716 | if (doc_reference == 1) | |
2717 | return make_number (0); | |
b2a30870 RS |
2718 | if (doc_reference == 2) |
2719 | { | |
2720 | /* Get a doc string from the file we are loading. | |
2721 | If it's in saved_doc_string, get it from there. */ | |
c1d497be | 2722 | int pos = XINT (XCDR (val)); |
c15cfd1f RS |
2723 | /* Position is negative for user variables. */ |
2724 | if (pos < 0) pos = -pos; | |
b2a30870 RS |
2725 | if (pos >= saved_doc_string_position |
2726 | && pos < (saved_doc_string_position | |
2727 | + saved_doc_string_length)) | |
2728 | { | |
2729 | int start = pos - saved_doc_string_position; | |
2730 | int from, to; | |
2731 | ||
2732 | /* Process quoting with ^A, | |
2733 | and find the end of the string, | |
2734 | which is marked with ^_ (037). */ | |
2735 | for (from = start, to = start; | |
2736 | saved_doc_string[from] != 037;) | |
2737 | { | |
2738 | int c = saved_doc_string[from++]; | |
2739 | if (c == 1) | |
2740 | { | |
2741 | c = saved_doc_string[from++]; | |
2742 | if (c == 1) | |
2743 | saved_doc_string[to++] = c; | |
2744 | else if (c == '0') | |
2745 | saved_doc_string[to++] = 0; | |
2746 | else if (c == '_') | |
2747 | saved_doc_string[to++] = 037; | |
2748 | } | |
2749 | else | |
2750 | saved_doc_string[to++] = c; | |
2751 | } | |
2752 | ||
2753 | return make_string (saved_doc_string + start, | |
2754 | to - start); | |
2755 | } | |
c15cfd1f RS |
2756 | /* Look in prev_saved_doc_string the same way. */ |
2757 | else if (pos >= prev_saved_doc_string_position | |
2758 | && pos < (prev_saved_doc_string_position | |
2759 | + prev_saved_doc_string_length)) | |
2760 | { | |
2761 | int start = pos - prev_saved_doc_string_position; | |
2762 | int from, to; | |
2763 | ||
2764 | /* Process quoting with ^A, | |
2765 | and find the end of the string, | |
2766 | which is marked with ^_ (037). */ | |
2767 | for (from = start, to = start; | |
2768 | prev_saved_doc_string[from] != 037;) | |
2769 | { | |
2770 | int c = prev_saved_doc_string[from++]; | |
2771 | if (c == 1) | |
2772 | { | |
2773 | c = prev_saved_doc_string[from++]; | |
2774 | if (c == 1) | |
2775 | prev_saved_doc_string[to++] = c; | |
2776 | else if (c == '0') | |
2777 | prev_saved_doc_string[to++] = 0; | |
2778 | else if (c == '_') | |
2779 | prev_saved_doc_string[to++] = 037; | |
2780 | } | |
2781 | else | |
2782 | prev_saved_doc_string[to++] = c; | |
2783 | } | |
2784 | ||
2785 | return make_string (prev_saved_doc_string + start, | |
2786 | to - start); | |
2787 | } | |
b2a30870 | 2788 | else |
6fe9cce5 | 2789 | return get_doc_string (val, 0, 0); |
b2a30870 RS |
2790 | } |
2791 | ||
821d417e RS |
2792 | return val; |
2793 | } | |
078e7b4a JB |
2794 | return Fsignal (Qinvalid_read_syntax, Fcons (make_string (". in wrong context", 18), Qnil)); |
2795 | } | |
2796 | return Fsignal (Qinvalid_read_syntax, Fcons (make_string ("] in a list", 11), Qnil)); | |
2797 | } | |
2798 | tem = (read_pure && flag <= 0 | |
2799 | ? pure_cons (elt, Qnil) | |
2800 | : Fcons (elt, Qnil)); | |
265a9e55 | 2801 | if (!NILP (tail)) |
c1d497be | 2802 | XCDR (tail) = tem; |
078e7b4a JB |
2803 | else |
2804 | val = tem; | |
2805 | tail = tem; | |
2806 | if (defunflag < 0) | |
2807 | defunflag = EQ (elt, Qdefun); | |
2808 | else if (defunflag > 0) | |
2809 | read_pure = 1; | |
2810 | } | |
2811 | } | |
2812 | \f | |
2813 | Lisp_Object Vobarray; | |
2814 | Lisp_Object initial_obarray; | |
2815 | ||
d007f5c8 RS |
2816 | /* oblookup stores the bucket number here, for the sake of Funintern. */ |
2817 | ||
2818 | int oblookup_last_bucket_number; | |
2819 | ||
2820 | static int hash_string (); | |
2821 | Lisp_Object oblookup (); | |
2822 | ||
2823 | /* Get an error if OBARRAY is not an obarray. | |
2824 | If it is one, return it. */ | |
2825 | ||
078e7b4a JB |
2826 | Lisp_Object |
2827 | check_obarray (obarray) | |
2828 | Lisp_Object obarray; | |
2829 | { | |
cfff016d | 2830 | while (!VECTORP (obarray) || XVECTOR (obarray)->size == 0) |
078e7b4a JB |
2831 | { |
2832 | /* If Vobarray is now invalid, force it to be valid. */ | |
2833 | if (EQ (Vobarray, obarray)) Vobarray = initial_obarray; | |
2834 | ||
2835 | obarray = wrong_type_argument (Qvectorp, obarray); | |
2836 | } | |
2837 | return obarray; | |
2838 | } | |
2839 | ||
d007f5c8 RS |
2840 | /* Intern the C string STR: return a symbol with that name, |
2841 | interned in the current obarray. */ | |
078e7b4a JB |
2842 | |
2843 | Lisp_Object | |
2844 | intern (str) | |
2845 | char *str; | |
2846 | { | |
2847 | Lisp_Object tem; | |
2848 | int len = strlen (str); | |
153a17b7 | 2849 | Lisp_Object obarray; |
078e7b4a | 2850 | |
153a17b7 | 2851 | obarray = Vobarray; |
cfff016d | 2852 | if (!VECTORP (obarray) || XVECTOR (obarray)->size == 0) |
078e7b4a | 2853 | obarray = check_obarray (obarray); |
e28552a4 | 2854 | tem = oblookup (obarray, str, len, len); |
cfff016d | 2855 | if (SYMBOLP (tem)) |
078e7b4a | 2856 | return tem; |
87631ef7 | 2857 | return Fintern (make_string (str, len), obarray); |
078e7b4a | 2858 | } |
4ad679f9 EN |
2859 | |
2860 | /* Create an uninterned symbol with name STR. */ | |
2861 | ||
2862 | Lisp_Object | |
2863 | make_symbol (str) | |
2864 | char *str; | |
2865 | { | |
2866 | int len = strlen (str); | |
2867 | ||
2868 | return Fmake_symbol ((!NILP (Vpurify_flag) | |
491f16a2 | 2869 | ? make_pure_string (str, len, len, 0) |
4ad679f9 EN |
2870 | : make_string (str, len))); |
2871 | } | |
d007f5c8 | 2872 | \f |
078e7b4a JB |
2873 | DEFUN ("intern", Fintern, Sintern, 1, 2, 0, |
2874 | "Return the canonical symbol whose name is STRING.\n\ | |
2875 | If there is none, one is created by this function and returned.\n\ | |
2876 | A second optional argument specifies the obarray to use;\n\ | |
2877 | it defaults to the value of `obarray'.") | |
9391b698 EN |
2878 | (string, obarray) |
2879 | Lisp_Object string, obarray; | |
078e7b4a JB |
2880 | { |
2881 | register Lisp_Object tem, sym, *ptr; | |
2882 | ||
265a9e55 | 2883 | if (NILP (obarray)) obarray = Vobarray; |
078e7b4a JB |
2884 | obarray = check_obarray (obarray); |
2885 | ||
9391b698 | 2886 | CHECK_STRING (string, 0); |
078e7b4a | 2887 | |
e28552a4 RS |
2888 | tem = oblookup (obarray, XSTRING (string)->data, |
2889 | XSTRING (string)->size, | |
fc932ac6 | 2890 | STRING_BYTES (XSTRING (string))); |
cfff016d | 2891 | if (!INTEGERP (tem)) |
078e7b4a JB |
2892 | return tem; |
2893 | ||
265a9e55 | 2894 | if (!NILP (Vpurify_flag)) |
9391b698 EN |
2895 | string = Fpurecopy (string); |
2896 | sym = Fmake_symbol (string); | |
4ad679f9 | 2897 | XSYMBOL (sym)->obarray = obarray; |
078e7b4a | 2898 | |
bdd47b1c | 2899 | if ((XSTRING (string)->data[0] == ':') |
a458d45d | 2900 | && EQ (obarray, initial_obarray)) |
a0549832 RS |
2901 | XSYMBOL (sym)->value = sym; |
2902 | ||
078e7b4a | 2903 | ptr = &XVECTOR (obarray)->contents[XINT (tem)]; |
cfff016d | 2904 | if (SYMBOLP (*ptr)) |
078e7b4a JB |
2905 | XSYMBOL (sym)->next = XSYMBOL (*ptr); |
2906 | else | |
2907 | XSYMBOL (sym)->next = 0; | |
2908 | *ptr = sym; | |
2909 | return sym; | |
2910 | } | |
2911 | ||
2912 | DEFUN ("intern-soft", Fintern_soft, Sintern_soft, 1, 2, 0, | |
b55048d4 | 2913 | "Return the canonical symbol named NAME, or nil if none exists.\n\ |
3ccf78e0 DL |
2914 | NAME may be a string or a symbol. If it is a symbol, that exact\n\ |
2915 | symbol is searched for.\n\ | |
078e7b4a JB |
2916 | A second optional argument specifies the obarray to use;\n\ |
2917 | it defaults to the value of `obarray'.") | |
b55048d4 GM |
2918 | (name, obarray) |
2919 | Lisp_Object name, obarray; | |
078e7b4a JB |
2920 | { |
2921 | register Lisp_Object tem; | |
b55048d4 | 2922 | struct Lisp_String *string; |
078e7b4a | 2923 | |
265a9e55 | 2924 | if (NILP (obarray)) obarray = Vobarray; |
078e7b4a JB |
2925 | obarray = check_obarray (obarray); |
2926 | ||
b55048d4 GM |
2927 | if (!SYMBOLP (name)) |
2928 | { | |
2929 | CHECK_STRING (name, 0); | |
2930 | string = XSTRING (name); | |
2931 | } | |
2932 | else | |
2933 | string = XSYMBOL (name)->name; | |
078e7b4a | 2934 | |
b55048d4 GM |
2935 | tem = oblookup (obarray, string->data, string->size, STRING_BYTES (string)); |
2936 | if (INTEGERP (tem) || (SYMBOLP (name) && !EQ (name, tem))) | |
2937 | return Qnil; | |
2938 | else | |
078e7b4a | 2939 | return tem; |
078e7b4a | 2940 | } |
d007f5c8 RS |
2941 | \f |
2942 | DEFUN ("unintern", Funintern, Sunintern, 1, 2, 0, | |
2943 | "Delete the symbol named NAME, if any, from OBARRAY.\n\ | |
2944 | The value is t if a symbol was found and deleted, nil otherwise.\n\ | |
2945 | NAME may be a string or a symbol. If it is a symbol, that symbol\n\ | |
2946 | is deleted, if it belongs to OBARRAY--no other symbol is deleted.\n\ | |
2947 | OBARRAY defaults to the value of the variable `obarray'.") | |
2948 | (name, obarray) | |
2949 | Lisp_Object name, obarray; | |
2950 | { | |
2951 | register Lisp_Object string, tem; | |
2952 | int hash; | |
2953 | ||
2954 | if (NILP (obarray)) obarray = Vobarray; | |
2955 | obarray = check_obarray (obarray); | |
2956 | ||
2957 | if (SYMBOLP (name)) | |
2958 | XSETSTRING (string, XSYMBOL (name)->name); | |
2959 | else | |
2960 | { | |
2961 | CHECK_STRING (name, 0); | |
2962 | string = name; | |
2963 | } | |
2964 | ||
e28552a4 RS |
2965 | tem = oblookup (obarray, XSTRING (string)->data, |
2966 | XSTRING (string)->size, | |
fc932ac6 | 2967 | STRING_BYTES (XSTRING (string))); |
d007f5c8 RS |
2968 | if (INTEGERP (tem)) |
2969 | return Qnil; | |
2970 | /* If arg was a symbol, don't delete anything but that symbol itself. */ | |
2971 | if (SYMBOLP (name) && !EQ (name, tem)) | |
2972 | return Qnil; | |
2973 | ||
ca69c42f RS |
2974 | XSYMBOL (tem)->obarray = Qnil; |
2975 | ||
d007f5c8 RS |
2976 | hash = oblookup_last_bucket_number; |
2977 | ||
2978 | if (EQ (XVECTOR (obarray)->contents[hash], tem)) | |
b2a30870 RS |
2979 | { |
2980 | if (XSYMBOL (tem)->next) | |
2981 | XSETSYMBOL (XVECTOR (obarray)->contents[hash], XSYMBOL (tem)->next); | |
2982 | else | |
2983 | XSETINT (XVECTOR (obarray)->contents[hash], 0); | |
2984 | } | |
d007f5c8 RS |
2985 | else |
2986 | { | |
2987 | Lisp_Object tail, following; | |
2988 | ||
2989 | for (tail = XVECTOR (obarray)->contents[hash]; | |
2990 | XSYMBOL (tail)->next; | |
2991 | tail = following) | |
2992 | { | |
2993 | XSETSYMBOL (following, XSYMBOL (tail)->next); | |
2994 | if (EQ (following, tem)) | |
2995 | { | |
2996 | XSYMBOL (tail)->next = XSYMBOL (following)->next; | |
2997 | break; | |
2998 | } | |
2999 | } | |
3000 | } | |
3001 | ||
3002 | return Qt; | |
3003 | } | |
3004 | \f | |
3005 | /* Return the symbol in OBARRAY whose names matches the string | |
e28552a4 RS |
3006 | of SIZE characters (SIZE_BYTE bytes) at PTR. |
3007 | If there is no such symbol in OBARRAY, return nil. | |
d007f5c8 RS |
3008 | |
3009 | Also store the bucket number in oblookup_last_bucket_number. */ | |
078e7b4a JB |
3010 | |
3011 | Lisp_Object | |
e28552a4 | 3012 | oblookup (obarray, ptr, size, size_byte) |
078e7b4a JB |
3013 | Lisp_Object obarray; |
3014 | register char *ptr; | |
e28552a4 | 3015 | int size, size_byte; |
078e7b4a | 3016 | { |
7a70b397 RS |
3017 | int hash; |
3018 | int obsize; | |
078e7b4a JB |
3019 | register Lisp_Object tail; |
3020 | Lisp_Object bucket, tem; | |
3021 | ||
cfff016d | 3022 | if (!VECTORP (obarray) |
7c79a684 | 3023 | || (obsize = XVECTOR (obarray)->size) == 0) |
078e7b4a JB |
3024 | { |
3025 | obarray = check_obarray (obarray); | |
3026 | obsize = XVECTOR (obarray)->size; | |
3027 | } | |
519418b3 RS |
3028 | /* This is sometimes needed in the middle of GC. */ |
3029 | obsize &= ~ARRAY_MARK_FLAG; | |
078e7b4a | 3030 | /* Combining next two lines breaks VMS C 2.3. */ |
e28552a4 | 3031 | hash = hash_string (ptr, size_byte); |
078e7b4a JB |
3032 | hash %= obsize; |
3033 | bucket = XVECTOR (obarray)->contents[hash]; | |
d007f5c8 | 3034 | oblookup_last_bucket_number = hash; |
078e7b4a JB |
3035 | if (XFASTINT (bucket) == 0) |
3036 | ; | |
cfff016d | 3037 | else if (!SYMBOLP (bucket)) |
078e7b4a | 3038 | error ("Bad data in guts of obarray"); /* Like CADR error message */ |
d007f5c8 RS |
3039 | else |
3040 | for (tail = bucket; ; XSETSYMBOL (tail, XSYMBOL (tail)->next)) | |
078e7b4a | 3041 | { |
fc932ac6 | 3042 | if (STRING_BYTES (XSYMBOL (tail)->name) == size_byte |
e28552a4 RS |
3043 | && XSYMBOL (tail)->name->size == size |
3044 | && !bcmp (XSYMBOL (tail)->name->data, ptr, size_byte)) | |
078e7b4a JB |
3045 | return tail; |
3046 | else if (XSYMBOL (tail)->next == 0) | |
3047 | break; | |
3048 | } | |
1805de4f | 3049 | XSETINT (tem, hash); |
078e7b4a JB |
3050 | return tem; |
3051 | } | |
3052 | ||
3053 | static int | |
3054 | hash_string (ptr, len) | |
3055 | unsigned char *ptr; | |
3056 | int len; | |
3057 | { | |
3058 | register unsigned char *p = ptr; | |
3059 | register unsigned char *end = p + len; | |
3060 | register unsigned char c; | |
3061 | register int hash = 0; | |
3062 | ||
3063 | while (p != end) | |
3064 | { | |
3065 | c = *p++; | |
3066 | if (c >= 0140) c -= 40; | |
3067 | hash = ((hash<<3) + (hash>>28) + c); | |
3068 | } | |
3069 | return hash & 07777777777; | |
3070 | } | |
d007f5c8 | 3071 | \f |
078e7b4a JB |
3072 | void |
3073 | map_obarray (obarray, fn, arg) | |
3074 | Lisp_Object obarray; | |
d5b28a9d | 3075 | void (*fn) P_ ((Lisp_Object, Lisp_Object)); |
078e7b4a JB |
3076 | Lisp_Object arg; |
3077 | { | |
3078 | register int i; | |
3079 | register Lisp_Object tail; | |
3080 | CHECK_VECTOR (obarray, 1); | |
3081 | for (i = XVECTOR (obarray)->size - 1; i >= 0; i--) | |
3082 | { | |
3083 | tail = XVECTOR (obarray)->contents[i]; | |
4f5c4403 | 3084 | if (SYMBOLP (tail)) |
078e7b4a JB |
3085 | while (1) |
3086 | { | |
3087 | (*fn) (tail, arg); | |
3088 | if (XSYMBOL (tail)->next == 0) | |
3089 | break; | |
1805de4f | 3090 | XSETSYMBOL (tail, XSYMBOL (tail)->next); |
078e7b4a JB |
3091 | } |
3092 | } | |
3093 | } | |
3094 | ||
d5b28a9d | 3095 | void |
078e7b4a JB |
3096 | mapatoms_1 (sym, function) |
3097 | Lisp_Object sym, function; | |
3098 | { | |
3099 | call1 (function, sym); | |
3100 | } | |
3101 | ||
3102 | DEFUN ("mapatoms", Fmapatoms, Smapatoms, 1, 2, 0, | |
3103 | "Call FUNCTION on every symbol in OBARRAY.\n\ | |
3104 | OBARRAY defaults to the value of `obarray'.") | |
3105 | (function, obarray) | |
3106 | Lisp_Object function, obarray; | |
3107 | { | |
265a9e55 | 3108 | if (NILP (obarray)) obarray = Vobarray; |
078e7b4a JB |
3109 | obarray = check_obarray (obarray); |
3110 | ||
3111 | map_obarray (obarray, mapatoms_1, function); | |
3112 | return Qnil; | |
3113 | } | |
3114 | ||
5e88a39e | 3115 | #define OBARRAY_SIZE 1511 |
078e7b4a JB |
3116 | |
3117 | void | |
3118 | init_obarray () | |
3119 | { | |
3120 | Lisp_Object oblength; | |
3121 | int hash; | |
3122 | Lisp_Object *tem; | |
3123 | ||
baf69866 | 3124 | XSETFASTINT (oblength, OBARRAY_SIZE); |
078e7b4a | 3125 | |
491f16a2 | 3126 | Qnil = Fmake_symbol (make_pure_string ("nil", 3, 3, 0)); |
078e7b4a JB |
3127 | Vobarray = Fmake_vector (oblength, make_number (0)); |
3128 | initial_obarray = Vobarray; | |
3129 | staticpro (&initial_obarray); | |
3130 | /* Intern nil in the obarray */ | |
4ad679f9 | 3131 | XSYMBOL (Qnil)->obarray = Vobarray; |
078e7b4a JB |
3132 | /* These locals are to kludge around a pyramid compiler bug. */ |
3133 | hash = hash_string ("nil", 3); | |
3134 | /* Separate statement here to avoid VAXC bug. */ | |
3135 | hash %= OBARRAY_SIZE; | |
3136 | tem = &XVECTOR (Vobarray)->contents[hash]; | |
3137 | *tem = Qnil; | |
3138 | ||
491f16a2 | 3139 | Qunbound = Fmake_symbol (make_pure_string ("unbound", 7, 7, 0)); |
078e7b4a JB |
3140 | XSYMBOL (Qnil)->function = Qunbound; |
3141 | XSYMBOL (Qunbound)->value = Qunbound; | |
3142 | XSYMBOL (Qunbound)->function = Qunbound; | |
3143 | ||
3144 | Qt = intern ("t"); | |
3145 | XSYMBOL (Qnil)->value = Qnil; | |
3146 | XSYMBOL (Qnil)->plist = Qnil; | |
3147 | XSYMBOL (Qt)->value = Qt; | |
3148 | ||
3149 | /* Qt is correct even if CANNOT_DUMP. loadup.el will set to nil at end. */ | |
3150 | Vpurify_flag = Qt; | |
3151 | ||
3152 | Qvariable_documentation = intern ("variable-documentation"); | |
0f73bb1c | 3153 | staticpro (&Qvariable_documentation); |
078e7b4a | 3154 | |
449fea39 | 3155 | read_buffer_size = 100 + MAX_MULTIBYTE_LENGTH; |
3cb65b0e | 3156 | read_buffer = (char *) xmalloc (read_buffer_size); |
078e7b4a JB |
3157 | } |
3158 | \f | |
3159 | void | |
3160 | defsubr (sname) | |
3161 | struct Lisp_Subr *sname; | |
3162 | { | |
3163 | Lisp_Object sym; | |
3164 | sym = intern (sname->symbol_name); | |
1805de4f | 3165 | XSETSUBR (XSYMBOL (sym)->function, sname); |
078e7b4a JB |
3166 | } |
3167 | ||
3168 | #ifdef NOTDEF /* use fset in subr.el now */ | |
3169 | void | |
3170 | defalias (sname, string) | |
3171 | struct Lisp_Subr *sname; | |
3172 | char *string; | |
3173 | { | |
3174 | Lisp_Object sym; | |
3175 | sym = intern (string); | |
1805de4f | 3176 | XSETSUBR (XSYMBOL (sym)->function, sname); |
078e7b4a JB |
3177 | } |
3178 | #endif /* NOTDEF */ | |
3179 | ||
078e7b4a | 3180 | /* Define an "integer variable"; a symbol whose value is forwarded |
1a0f90f7 | 3181 | to a C variable of type int. Sample call: */ |
950c215d | 3182 | /* DEFVAR_INT ("indent-tabs-mode", &indent_tabs_mode, "Documentation"); */ |
078e7b4a | 3183 | void |
e9e00ff2 | 3184 | defvar_int (namestring, address) |
078e7b4a JB |
3185 | char *namestring; |
3186 | int *address; | |
078e7b4a | 3187 | { |
1a0f90f7 | 3188 | Lisp_Object sym, val; |
078e7b4a | 3189 | sym = intern (namestring); |
1a0f90f7 | 3190 | val = allocate_misc (); |
47e28b2c | 3191 | XMISCTYPE (val) = Lisp_Misc_Intfwd; |
fc1e7df5 | 3192 | XINTFWD (val)->intvar = address; |
1a0f90f7 | 3193 | XSYMBOL (sym)->value = val; |
078e7b4a JB |
3194 | } |
3195 | ||
3196 | /* Similar but define a variable whose value is T if address contains 1, | |
1a0f90f7 | 3197 | NIL if address contains 0 */ |
078e7b4a | 3198 | void |
e9e00ff2 | 3199 | defvar_bool (namestring, address) |
078e7b4a JB |
3200 | char *namestring; |
3201 | int *address; | |
078e7b4a | 3202 | { |
1a0f90f7 | 3203 | Lisp_Object sym, val; |
078e7b4a | 3204 | sym = intern (namestring); |
1a0f90f7 | 3205 | val = allocate_misc (); |
47e28b2c | 3206 | XMISCTYPE (val) = Lisp_Misc_Boolfwd; |
fc1e7df5 | 3207 | XBOOLFWD (val)->boolvar = address; |
1a0f90f7 | 3208 | XSYMBOL (sym)->value = val; |
1ffcc3b1 | 3209 | Vbyte_boolean_vars = Fcons (sym, Vbyte_boolean_vars); |
078e7b4a JB |
3210 | } |
3211 | ||
1a0f90f7 KH |
3212 | /* Similar but define a variable whose value is the Lisp Object stored |
3213 | at address. Two versions: with and without gc-marking of the C | |
3214 | variable. The nopro version is used when that variable will be | |
3215 | gc-marked for some other reason, since marking the same slot twice | |
3216 | can cause trouble with strings. */ | |
078e7b4a | 3217 | void |
1a0f90f7 | 3218 | defvar_lisp_nopro (namestring, address) |
078e7b4a JB |
3219 | char *namestring; |
3220 | Lisp_Object *address; | |
078e7b4a | 3221 | { |
1a0f90f7 | 3222 | Lisp_Object sym, val; |
078e7b4a | 3223 | sym = intern (namestring); |
1a0f90f7 | 3224 | val = allocate_misc (); |
47e28b2c | 3225 | XMISCTYPE (val) = Lisp_Misc_Objfwd; |
fc1e7df5 | 3226 | XOBJFWD (val)->objvar = address; |
1a0f90f7 | 3227 | XSYMBOL (sym)->value = val; |
078e7b4a JB |
3228 | } |
3229 | ||
078e7b4a | 3230 | void |
1a0f90f7 | 3231 | defvar_lisp (namestring, address) |
078e7b4a JB |
3232 | char *namestring; |
3233 | Lisp_Object *address; | |
078e7b4a | 3234 | { |
1a0f90f7 KH |
3235 | defvar_lisp_nopro (namestring, address); |
3236 | staticpro (address); | |
078e7b4a JB |
3237 | } |
3238 | ||
078e7b4a | 3239 | /* Similar but define a variable whose value is the Lisp Object stored in |
2836d9a4 KH |
3240 | the current buffer. address is the address of the slot in the buffer |
3241 | that is current now. */ | |
078e7b4a JB |
3242 | |
3243 | void | |
4360b0c6 | 3244 | defvar_per_buffer (namestring, address, type, doc) |
078e7b4a JB |
3245 | char *namestring; |
3246 | Lisp_Object *address; | |
4360b0c6 | 3247 | Lisp_Object type; |
078e7b4a JB |
3248 | char *doc; |
3249 | { | |
1a0f90f7 | 3250 | Lisp_Object sym, val; |
078e7b4a JB |
3251 | int offset; |
3252 | extern struct buffer buffer_local_symbols; | |
3253 | ||
3254 | sym = intern (namestring); | |
1a0f90f7 | 3255 | val = allocate_misc (); |
078e7b4a JB |
3256 | offset = (char *)address - (char *)current_buffer; |
3257 | ||
47e28b2c | 3258 | XMISCTYPE (val) = Lisp_Misc_Buffer_Objfwd; |
fc1e7df5 | 3259 | XBUFFER_OBJFWD (val)->offset = offset; |
1a0f90f7 | 3260 | XSYMBOL (sym)->value = val; |
11fd416e GM |
3261 | PER_BUFFER_SYMBOL (offset) = sym; |
3262 | PER_BUFFER_TYPE (offset) = type; | |
cf611f01 | 3263 | |
11fd416e | 3264 | if (PER_BUFFER_IDX (offset) == 0) |
078e7b4a JB |
3265 | /* Did a DEFVAR_PER_BUFFER without initializing the corresponding |
3266 | slot of buffer_local_flags */ | |
3267 | abort (); | |
3268 | } | |
3269 | ||
950c215d KH |
3270 | |
3271 | /* Similar but define a variable whose value is the Lisp Object stored | |
4ac38690 | 3272 | at a particular offset in the current kboard object. */ |
950c215d KH |
3273 | |
3274 | void | |
4ac38690 | 3275 | defvar_kboard (namestring, offset) |
950c215d KH |
3276 | char *namestring; |
3277 | int offset; | |
3278 | { | |
3279 | Lisp_Object sym, val; | |
3280 | sym = intern (namestring); | |
3281 | val = allocate_misc (); | |
47e28b2c | 3282 | XMISCTYPE (val) = Lisp_Misc_Kboard_Objfwd; |
4ac38690 | 3283 | XKBOARD_OBJFWD (val)->offset = offset; |
950c215d KH |
3284 | XSYMBOL (sym)->value = val; |
3285 | } | |
078e7b4a | 3286 | \f |
11938f10 KH |
3287 | /* Record the value of load-path used at the start of dumping |
3288 | so we can see if the site changed it later during dumping. */ | |
3289 | static Lisp_Object dump_path; | |
3290 | ||
d5b28a9d | 3291 | void |
279499f0 | 3292 | init_lread () |
078e7b4a | 3293 | { |
46947372 | 3294 | char *normal; |
e73997a1 | 3295 | int turn_off_warning = 0; |
078e7b4a | 3296 | |
279499f0 | 3297 | /* Compute the default load-path. */ |
46947372 JB |
3298 | #ifdef CANNOT_DUMP |
3299 | normal = PATH_LOADSEARCH; | |
e065a56e | 3300 | Vload_path = decode_env_path (0, normal); |
46947372 JB |
3301 | #else |
3302 | if (NILP (Vpurify_flag)) | |
3303 | normal = PATH_LOADSEARCH; | |
279499f0 | 3304 | else |
46947372 | 3305 | normal = PATH_DUMPLOADSEARCH; |
279499f0 | 3306 | |
46947372 JB |
3307 | /* In a dumped Emacs, we normally have to reset the value of |
3308 | Vload_path from PATH_LOADSEARCH, since the value that was dumped | |
3309 | uses ../lisp, instead of the path of the installed elisp | |
3310 | libraries. However, if it appears that Vload_path was changed | |
3311 | from the default before dumping, don't override that value. */ | |
4746118a JB |
3312 | if (initialized) |
3313 | { | |
4746118a | 3314 | if (! NILP (Fequal (dump_path, Vload_path))) |
80667d53 RS |
3315 | { |
3316 | Vload_path = decode_env_path (0, normal); | |
74180aa4 | 3317 | if (!NILP (Vinstallation_directory)) |
80667d53 | 3318 | { |
74180aa4 | 3319 | /* Add to the path the lisp subdir of the |
3a3056e5 RS |
3320 | installation dir, if it exists. */ |
3321 | Lisp_Object tem, tem1; | |
74180aa4 RS |
3322 | tem = Fexpand_file_name (build_string ("lisp"), |
3323 | Vinstallation_directory); | |
3a3056e5 RS |
3324 | tem1 = Ffile_exists_p (tem); |
3325 | if (!NILP (tem1)) | |
3326 | { | |
3327 | if (NILP (Fmember (tem, Vload_path))) | |
e73997a1 RS |
3328 | { |
3329 | turn_off_warning = 1; | |
3330 | Vload_path = nconc2 (Vload_path, Fcons (tem, Qnil)); | |
3331 | } | |
3a3056e5 RS |
3332 | } |
3333 | else | |
3334 | /* That dir doesn't exist, so add the build-time | |
3335 | Lisp dirs instead. */ | |
3336 | Vload_path = nconc2 (Vload_path, dump_path); | |
c478f98c | 3337 | |
9fbc0116 RS |
3338 | /* Add leim under the installation dir, if it exists. */ |
3339 | tem = Fexpand_file_name (build_string ("leim"), | |
3340 | Vinstallation_directory); | |
3341 | tem1 = Ffile_exists_p (tem); | |
3342 | if (!NILP (tem1)) | |
3343 | { | |
3344 | if (NILP (Fmember (tem, Vload_path))) | |
3345 | Vload_path = nconc2 (Vload_path, Fcons (tem, Qnil)); | |
3346 | } | |
3347 | ||
c478f98c RS |
3348 | /* Add site-list under the installation dir, if it exists. */ |
3349 | tem = Fexpand_file_name (build_string ("site-lisp"), | |
3350 | Vinstallation_directory); | |
3351 | tem1 = Ffile_exists_p (tem); | |
3352 | if (!NILP (tem1)) | |
3353 | { | |
3354 | if (NILP (Fmember (tem, Vload_path))) | |
3355 | Vload_path = nconc2 (Vload_path, Fcons (tem, Qnil)); | |
3356 | } | |
0f337465 RS |
3357 | |
3358 | /* If Emacs was not built in the source directory, | |
9fbc0116 RS |
3359 | and it is run from where it was built, add to load-path |
3360 | the lisp, leim and site-lisp dirs under that directory. */ | |
0f337465 RS |
3361 | |
3362 | if (NILP (Fequal (Vinstallation_directory, Vsource_directory))) | |
3363 | { | |
33046fc9 RS |
3364 | Lisp_Object tem2; |
3365 | ||
0f337465 RS |
3366 | tem = Fexpand_file_name (build_string ("src/Makefile"), |
3367 | Vinstallation_directory); | |
3368 | tem1 = Ffile_exists_p (tem); | |
33046fc9 RS |
3369 | |
3370 | /* Don't be fooled if they moved the entire source tree | |
3371 | AFTER dumping Emacs. If the build directory is indeed | |
3372 | different from the source dir, src/Makefile.in and | |
3373 | src/Makefile will not be found together. */ | |
3374 | tem = Fexpand_file_name (build_string ("src/Makefile.in"), | |
3375 | Vinstallation_directory); | |
3376 | tem2 = Ffile_exists_p (tem); | |
3377 | if (!NILP (tem1) && NILP (tem2)) | |
0f337465 RS |
3378 | { |
3379 | tem = Fexpand_file_name (build_string ("lisp"), | |
3380 | Vsource_directory); | |
3381 | ||
3382 | if (NILP (Fmember (tem, Vload_path))) | |
3383 | Vload_path = nconc2 (Vload_path, Fcons (tem, Qnil)); | |
3384 | ||
9fbc0116 RS |
3385 | tem = Fexpand_file_name (build_string ("leim"), |
3386 | Vsource_directory); | |
3387 | ||
3388 | if (NILP (Fmember (tem, Vload_path))) | |
3389 | Vload_path = nconc2 (Vload_path, Fcons (tem, Qnil)); | |
3390 | ||
0f337465 RS |
3391 | tem = Fexpand_file_name (build_string ("site-lisp"), |
3392 | Vsource_directory); | |
3393 | ||
3394 | if (NILP (Fmember (tem, Vload_path))) | |
3395 | Vload_path = nconc2 (Vload_path, Fcons (tem, Qnil)); | |
3396 | } | |
3397 | } | |
80667d53 RS |
3398 | } |
3399 | } | |
4746118a JB |
3400 | } |
3401 | else | |
11938f10 | 3402 | { |
7b396c6c RS |
3403 | /* NORMAL refers to the lisp dir in the source directory. */ |
3404 | /* We used to add ../lisp at the front here, but | |
3405 | that caused trouble because it was copied from dump_path | |
3406 | into Vload_path, aboe, when Vinstallation_directory was non-nil. | |
3407 | It should be unnecessary. */ | |
3408 | Vload_path = decode_env_path (0, normal); | |
11938f10 KH |
3409 | dump_path = Vload_path; |
3410 | } | |
46947372 | 3411 | #endif |
279499f0 | 3412 | |
317073d5 RS |
3413 | #ifndef WINDOWSNT |
3414 | /* When Emacs is invoked over network shares on NT, PATH_LOADSEARCH is | |
3415 | almost never correct, thereby causing a warning to be printed out that | |
8e6208c5 | 3416 | confuses users. Since PATH_LOADSEARCH is always overridden by the |
317073d5 RS |
3417 | EMACSLOADPATH environment variable below, disable the warning on NT. */ |
3418 | ||
078e7b4a | 3419 | /* Warn if dirs in the *standard* path don't exist. */ |
e73997a1 RS |
3420 | if (!turn_off_warning) |
3421 | { | |
3422 | Lisp_Object path_tail; | |
078e7b4a | 3423 | |
e73997a1 RS |
3424 | for (path_tail = Vload_path; |
3425 | !NILP (path_tail); | |
c1d497be | 3426 | path_tail = XCDR (path_tail)) |
e73997a1 RS |
3427 | { |
3428 | Lisp_Object dirfile; | |
3429 | dirfile = Fcar (path_tail); | |
3430 | if (STRINGP (dirfile)) | |
3431 | { | |
3432 | dirfile = Fdirectory_file_name (dirfile); | |
3433 | if (access (XSTRING (dirfile)->data, 0) < 0) | |
85496b8c | 3434 | dir_warning ("Warning: Lisp directory `%s' does not exist.\n", |
c1d497be | 3435 | XCAR (path_tail)); |
e73997a1 RS |
3436 | } |
3437 | } | |
3438 | } | |
317073d5 | 3439 | #endif /* WINDOWSNT */ |
46947372 JB |
3440 | |
3441 | /* If the EMACSLOADPATH environment variable is set, use its value. | |
3442 | This doesn't apply if we're dumping. */ | |
ffd9c2a1 | 3443 | #ifndef CANNOT_DUMP |
46947372 JB |
3444 | if (NILP (Vpurify_flag) |
3445 | && egetenv ("EMACSLOADPATH")) | |
ffd9c2a1 | 3446 | #endif |
279499f0 | 3447 | Vload_path = decode_env_path ("EMACSLOADPATH", normal); |
279499f0 JB |
3448 | |
3449 | Vvalues = Qnil; | |
3450 | ||
078e7b4a | 3451 | load_in_progress = 0; |
4e53f562 | 3452 | Vload_file_name = Qnil; |
d2c6be7f RS |
3453 | |
3454 | load_descriptor_list = Qnil; | |
8f6b0411 RS |
3455 | |
3456 | Vstandard_input = Qt; | |
f74b0705 | 3457 | Vloads_in_progress = Qnil; |
078e7b4a JB |
3458 | } |
3459 | ||
85496b8c RS |
3460 | /* Print a warning, using format string FORMAT, that directory DIRNAME |
3461 | does not exist. Print it on stderr and put it in *Message*. */ | |
3462 | ||
d5b28a9d | 3463 | void |
85496b8c RS |
3464 | dir_warning (format, dirname) |
3465 | char *format; | |
3466 | Lisp_Object dirname; | |
3467 | { | |
3468 | char *buffer | |
3469 | = (char *) alloca (XSTRING (dirname)->size + strlen (format) + 5); | |
3470 | ||
3471 | fprintf (stderr, format, XSTRING (dirname)->data); | |
3472 | sprintf (buffer, format, XSTRING (dirname)->data); | |
9b69357e GV |
3473 | /* Don't log the warning before we've initialized!! */ |
3474 | if (initialized) | |
3475 | message_dolog (buffer, strlen (buffer), 0, STRING_MULTIBYTE (dirname)); | |
85496b8c RS |
3476 | } |
3477 | ||
078e7b4a | 3478 | void |
279499f0 | 3479 | syms_of_lread () |
078e7b4a JB |
3480 | { |
3481 | defsubr (&Sread); | |
3482 | defsubr (&Sread_from_string); | |
3483 | defsubr (&Sintern); | |
3484 | defsubr (&Sintern_soft); | |
d007f5c8 | 3485 | defsubr (&Sunintern); |
078e7b4a | 3486 | defsubr (&Sload); |
228d4b1c | 3487 | defsubr (&Seval_buffer); |
078e7b4a JB |
3488 | defsubr (&Seval_region); |
3489 | defsubr (&Sread_char); | |
3490 | defsubr (&Sread_char_exclusive); | |
078e7b4a | 3491 | defsubr (&Sread_event); |
078e7b4a JB |
3492 | defsubr (&Sget_file_char); |
3493 | defsubr (&Smapatoms); | |
3494 | ||
3495 | DEFVAR_LISP ("obarray", &Vobarray, | |
3496 | "Symbol table for use by `intern' and `read'.\n\ | |
3497 | It is a vector whose length ought to be prime for best results.\n\ | |
3498 | The vector's contents don't make sense if examined from Lisp programs;\n\ | |
3499 | to find all the symbols in an obarray, use `mapatoms'."); | |
3500 | ||
3501 | DEFVAR_LISP ("values", &Vvalues, | |
3502 | "List of values of all expressions which were read, evaluated and printed.\n\ | |
3503 | Order is reverse chronological."); | |
3504 | ||
3505 | DEFVAR_LISP ("standard-input", &Vstandard_input, | |
3506 | "Stream for read to get input from.\n\ | |
3507 | See documentation of `read' for possible values."); | |
3508 | Vstandard_input = Qt; | |
3509 | ||
3510 | DEFVAR_LISP ("load-path", &Vload_path, | |
3511 | "*List of directories to search for files to load.\n\ | |
3512 | Each element is a string (directory name) or nil (try default directory).\n\ | |
3513 | Initialized based on EMACSLOADPATH environment variable, if any,\n\ | |
57bda87a | 3514 | otherwise to default specified by file `epaths.h' when Emacs was built."); |
078e7b4a JB |
3515 | |
3516 | DEFVAR_BOOL ("load-in-progress", &load_in_progress, | |
3517 | "Non-nil iff inside of `load'."); | |
3518 | ||
3519 | DEFVAR_LISP ("after-load-alist", &Vafter_load_alist, | |
3520 | "An alist of expressions to be evalled when particular files are loaded.\n\ | |
3521 | Each element looks like (FILENAME FORMS...).\n\ | |
3522 | When `load' is run and the file-name argument is FILENAME,\n\ | |
3523 | the FORMS in the corresponding element are executed at the end of loading.\n\n\ | |
3524 | FILENAME must match exactly! Normally FILENAME is the name of a library,\n\ | |
3525 | with no directory specified, since that is how `load' is normally called.\n\ | |
3526 | An error in FORMS does not undo the load,\n\ | |
3527 | but does prevent execution of the rest of the FORMS."); | |
3528 | Vafter_load_alist = Qnil; | |
3529 | ||
ae321d28 RS |
3530 | DEFVAR_LISP ("load-history", &Vload_history, |
3531 | "Alist mapping source file names to symbols and features.\n\ | |
3532 | Each alist element is a list that starts with a file name,\n\ | |
3533 | except for one element (optional) that starts with nil and describes\n\ | |
3534 | definitions evaluated from buffers not visiting files.\n\ | |
3535 | The remaining elements of each list are symbols defined as functions\n\ | |
e8c7d424 | 3536 | or variables, and cons cells `(provide . FEATURE)', `(require . FEATURE)',\n\ |
7973e637 | 3537 | and `(autoload . SYMBOL)'."); |
ae321d28 RS |
3538 | Vload_history = Qnil; |
3539 | ||
20ea2964 RS |
3540 | DEFVAR_LISP ("load-file-name", &Vload_file_name, |
3541 | "Full name of file being loaded by `load'."); | |
3542 | Vload_file_name = Qnil; | |
3543 | ||
4116ab9f | 3544 | DEFVAR_LISP ("user-init-file", &Vuser_init_file, |
d750b1f5 AI |
3545 | "File name, including directory, of user's initialization file.\n\ |
3546 | If the file loaded had extension `.elc' and there was a corresponding `.el'\n\ | |
3547 | file, this variable contains the name of the .el file, suitable for use\n\ | |
d826d78b | 3548 | by functions like `custom-save-all' which edit the init file."); |
4116ab9f KH |
3549 | Vuser_init_file = Qnil; |
3550 | ||
8a1f1537 RS |
3551 | DEFVAR_LISP ("current-load-list", &Vcurrent_load_list, |
3552 | "Used for internal purposes by `load'."); | |
ae321d28 RS |
3553 | Vcurrent_load_list = Qnil; |
3554 | ||
84a15045 RS |
3555 | DEFVAR_LISP ("load-read-function", &Vload_read_function, |
3556 | "Function used by `load' and `eval-region' for reading expressions.\n\ | |
3557 | The default is nil, which means use the function `read'."); | |
3558 | Vload_read_function = Qnil; | |
3559 | ||
fe0e03f3 KH |
3560 | DEFVAR_LISP ("load-source-file-function", &Vload_source_file_function, |
3561 | "Function called in `load' for loading an Emacs lisp source file.\n\ | |
3562 | This function is for doing code conversion before reading the source file.\n\ | |
3563 | If nil, loading is done without any code conversion.\n\ | |
3564 | Arguments are FULLNAME, FILE, NOERROR, NOMESSAGE, where\n\ | |
3565 | FULLNAME is the full name of FILE.\n\ | |
3566 | See `load' for the meaning of the remaining arguments."); | |
3567 | Vload_source_file_function = Qnil; | |
3568 | ||
b2a30870 RS |
3569 | DEFVAR_BOOL ("load-force-doc-strings", &load_force_doc_strings, |
3570 | "Non-nil means `load' should force-load all dynamic doc strings.\n\ | |
3571 | This is useful when the file being loaded is a temporary copy."); | |
3572 | load_force_doc_strings = 0; | |
3573 | ||
94e554db | 3574 | DEFVAR_BOOL ("load-convert-to-unibyte", &load_convert_to_unibyte, |
afdca070 RS |
3575 | "Non-nil means `read' converts strings to unibyte whenever possible.\n\ |
3576 | This is normally bound by `load' and `eval-buffer' to control `read',\n\ | |
3577 | and is not meant for users to change."); | |
94e554db RS |
3578 | load_convert_to_unibyte = 0; |
3579 | ||
1521a8fa RS |
3580 | DEFVAR_LISP ("source-directory", &Vsource_directory, |
3581 | "Directory in which Emacs sources were found when Emacs was built.\n\ | |
3582 | You cannot count on them to still be there!"); | |
a90ba1e2 KH |
3583 | Vsource_directory |
3584 | = Fexpand_file_name (build_string ("../"), | |
3585 | Fcar (decode_env_path (0, PATH_DUMPLOADSEARCH))); | |
3586 | ||
4b104c41 RS |
3587 | DEFVAR_LISP ("preloaded-file-list", &Vpreloaded_file_list, |
3588 | "List of files that were preloaded (when dumping Emacs)."); | |
3589 | Vpreloaded_file_list = Qnil; | |
3590 | ||
1ffcc3b1 DL |
3591 | DEFVAR_LISP ("byte-boolean-vars", &Vbyte_boolean_vars, |
3592 | "List of all DEFVAR_BOOL variables, used by the byte code optimizer."); | |
3593 | Vbyte_boolean_vars = Qnil; | |
3594 | ||
da84f340 GM |
3595 | DEFVAR_BOOL ("load-dangerous-libraries", &load_dangerous_libraries, |
3596 | "Non-nil means load dangerous compiled Lisp files.\n\ | |
3597 | Some versions of XEmacs use different byte codes than Emacs. These\n\ | |
3598 | incompatible byte codes can make Emacs crash when it tries to execute\n\ | |
3599 | them."); | |
3600 | load_dangerous_libraries = 0; | |
3601 | ||
bb970e67 GM |
3602 | DEFVAR_LISP ("bytecomp-version-regexp", &Vbytecomp_version_regexp, |
3603 | "Regular expression matching safe to load compiled Lisp files.\n\ | |
3604 | When Emacs loads a compiled Lisp file, it reads the first 512 bytes\n\ | |
3605 | from the file, and matches them against this regular expression.\n\ | |
3606 | When the regular expression matches, the file is considered to be safe\n\ | |
3607 | to load. See also `load-dangerous-libraries'."); | |
3608 | Vbytecomp_version_regexp | |
f2e7d5eb | 3609 | = build_string ("^;;;.\\(in Emacs version\\|bytecomp version FSF\\)"); |
da84f340 | 3610 | |
550a625e GM |
3611 | DEFVAR_LISP ("recursive-load-depth-limit", &Vrecursive_load_depth_limit, |
3612 | "Limit for depth of recursive loads.\n\ | |
3613 | Value should be either an integer > 0 specifying the limit, or nil for\n\ | |
3614 | no limit."); | |
3615 | Vrecursive_load_depth_limit = make_number (10); | |
3616 | ||
a90ba1e2 KH |
3617 | /* Vsource_directory was initialized in init_lread. */ |
3618 | ||
d2c6be7f RS |
3619 | load_descriptor_list = Qnil; |
3620 | staticpro (&load_descriptor_list); | |
3621 | ||
8a1f1537 RS |
3622 | Qcurrent_load_list = intern ("current-load-list"); |
3623 | staticpro (&Qcurrent_load_list); | |
3624 | ||
078e7b4a JB |
3625 | Qstandard_input = intern ("standard-input"); |
3626 | staticpro (&Qstandard_input); | |
3627 | ||
3628 | Qread_char = intern ("read-char"); | |
3629 | staticpro (&Qread_char); | |
3630 | ||
3631 | Qget_file_char = intern ("get-file-char"); | |
3632 | staticpro (&Qget_file_char); | |
7bd279cd | 3633 | |
17634846 RS |
3634 | Qbackquote = intern ("`"); |
3635 | staticpro (&Qbackquote); | |
3636 | Qcomma = intern (","); | |
3637 | staticpro (&Qcomma); | |
3638 | Qcomma_at = intern (",@"); | |
3639 | staticpro (&Qcomma_at); | |
3640 | Qcomma_dot = intern (",."); | |
3641 | staticpro (&Qcomma_dot); | |
3642 | ||
74549846 RS |
3643 | Qinhibit_file_name_operation = intern ("inhibit-file-name-operation"); |
3644 | staticpro (&Qinhibit_file_name_operation); | |
3645 | ||
7bd279cd RS |
3646 | Qascii_character = intern ("ascii-character"); |
3647 | staticpro (&Qascii_character); | |
c2225d00 | 3648 | |
2b6cae0c RS |
3649 | Qfunction = intern ("function"); |
3650 | staticpro (&Qfunction); | |
3651 | ||
c2225d00 RS |
3652 | Qload = intern ("load"); |
3653 | staticpro (&Qload); | |
20ea2964 RS |
3654 | |
3655 | Qload_file_name = intern ("load-file-name"); | |
3656 | staticpro (&Qload_file_name); | |
11938f10 KH |
3657 | |
3658 | staticpro (&dump_path); | |
4ad679f9 EN |
3659 | |
3660 | staticpro (&read_objects); | |
3661 | read_objects = Qnil; | |
9e062b6c RS |
3662 | staticpro (&seen_list); |
3663 | ||
7ee3bd7b GM |
3664 | Vloads_in_progress = Qnil; |
3665 | staticpro (&Vloads_in_progress); | |
078e7b4a | 3666 | } |