Commit | Line | Data |
---|---|---|
f4bc4e59 LC |
1 | /* Copyright (C) 1995-1999, 2000, 2001, 2002, 2003, 2004, 2006, 2008, |
2 | * 2009, 2010, 2011 Free Software Foundation, Inc. | |
3 | * | |
73be1d9e | 4 | * This library is free software; you can redistribute it and/or |
53befeb7 NJ |
5 | * modify it under the terms of the GNU Lesser General Public License |
6 | * as published by the Free Software Foundation; either version 3 of | |
7 | * the License, or (at your option) any later version. | |
0f2d19dd | 8 | * |
53befeb7 NJ |
9 | * This library is distributed in the hope that it will be useful, but |
10 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
73be1d9e MV |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
12 | * Lesser General Public License for more details. | |
0f2d19dd | 13 | * |
73be1d9e MV |
14 | * You should have received a copy of the GNU Lesser General Public |
15 | * License along with this library; if not, write to the Free Software | |
53befeb7 NJ |
16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
17 | * 02110-1301 USA | |
73be1d9e | 18 | */ |
1bbd0b84 | 19 | |
1bbd0b84 | 20 | |
0f2d19dd | 21 | \f |
dbb605f5 LC |
22 | #ifdef HAVE_CONFIG_H |
23 | # include <config.h> | |
24 | #endif | |
0f2d19dd | 25 | |
e6e2e95a | 26 | #include <errno.h> |
f4bc4e59 LC |
27 | #include <iconv.h> |
28 | #include <stdio.h> | |
29 | #include <assert.h> | |
30 | ||
eca29b02 | 31 | #include <uniconv.h> |
904a78f1 | 32 | #include <unictype.h> |
e6e2e95a | 33 | |
a0599745 MD |
34 | #include "libguile/_scm.h" |
35 | #include "libguile/chars.h" | |
a002f1a2 | 36 | #include "libguile/continuations.h" |
a0599745 | 37 | #include "libguile/smob.h" |
bbb2ecd1 | 38 | #include "libguile/control.h" |
a0599745 MD |
39 | #include "libguile/eval.h" |
40 | #include "libguile/macros.h" | |
41 | #include "libguile/procprop.h" | |
42 | #include "libguile/read.h" | |
43 | #include "libguile/weaks.h" | |
2fb924f6 | 44 | #include "libguile/programs.h" |
a0599745 MD |
45 | #include "libguile/alist.h" |
46 | #include "libguile/struct.h" | |
a0599745 MD |
47 | #include "libguile/ports.h" |
48 | #include "libguile/root.h" | |
49 | #include "libguile/strings.h" | |
50 | #include "libguile/strports.h" | |
51 | #include "libguile/vectors.h" | |
327967ef | 52 | #include "libguile/numbers.h" |
6f3b0cc2 | 53 | #include "libguile/vm.h" |
a0599745 MD |
54 | |
55 | #include "libguile/validate.h" | |
56 | #include "libguile/print.h" | |
22fc179a HWN |
57 | |
58 | #include "libguile/private-options.h" | |
59 | ||
0f2d19dd JB |
60 | \f |
61 | ||
07f49ac7 LC |
62 | /* Character printers. */ |
63 | ||
f4bc4e59 LC |
64 | static size_t display_string (const void *, int, size_t, SCM, |
65 | scm_t_string_failed_conversion_handler); | |
66 | ||
07f49ac7 LC |
67 | static int display_character (scm_t_wchar, SCM, |
68 | scm_t_string_failed_conversion_handler); | |
f4bc4e59 | 69 | |
07f49ac7 LC |
70 | static void write_character (scm_t_wchar, SCM, int); |
71 | ||
f4bc4e59 LC |
72 | static void write_character_escaped (scm_t_wchar, int, SCM); |
73 | ||
07f49ac7 LC |
74 | \f |
75 | ||
0f2d19dd JB |
76 | /* {Names of immediate symbols} |
77 | * | |
78 | * This table must agree with the declarations in scm.h: {Immediate Symbols}. | |
79 | */ | |
80 | ||
e17d318f DH |
81 | /* This table must agree with the list of flags in tags.h. */ |
82 | static const char *iflagnames[] = | |
83 | { | |
84 | "#f", | |
45f4cbdf MW |
85 | "#nil", /* Elisp nil value. Should print from elisp as symbol `nil'. */ |
86 | "#<XXX UNUSED LISP FALSE -- DO NOT USE -- SHOULD NEVER BE SEEN XXX>", | |
87 | "()", | |
e17d318f | 88 | "#t", |
f60c2c4e MW |
89 | "#<XXX UNUSED BOOLEAN 0 -- DO NOT USE -- SHOULD NEVER BE SEEN XXX>", |
90 | "#<XXX UNUSED BOOLEAN 1 -- DO NOT USE -- SHOULD NEVER BE SEEN XXX>", | |
91 | "#<XXX UNUSED BOOLEAN 2 -- DO NOT USE -- SHOULD NEVER BE SEEN XXX>", | |
45f4cbdf | 92 | "#<unspecified>", |
e17d318f DH |
93 | "#<undefined>", |
94 | "#<eof>", | |
e17d318f DH |
95 | |
96 | /* Unbound slot marker for GOOPS. For internal use in GOOPS only. */ | |
97 | "#<unbound>", | |
e17d318f DH |
98 | }; |
99 | ||
475fa9a5 MV |
100 | SCM_SYMBOL (sym_reader, "reader"); |
101 | ||
92c2555f | 102 | scm_t_option scm_print_opts[] = { |
3d27ef4b | 103 | { SCM_OPTION_SCM, "highlight-prefix", (scm_t_bits)SCM_BOOL_F, |
81ae25da | 104 | "The string to print before highlighted values." }, |
3d27ef4b | 105 | { SCM_OPTION_SCM, "highlight-suffix", (scm_t_bits)SCM_BOOL_F, |
475fa9a5 | 106 | "The string to print after highlighted values." }, |
3d27ef4b | 107 | { SCM_OPTION_SCM, "quote-keywordish-symbols", (scm_t_bits)SCM_BOOL_F, |
475fa9a5 MV |
108 | "How to print symbols that have a colon as their first or last character. " |
109 | "The value '#f' does not quote the colons; '#t' quotes them; " | |
110 | "'reader' quotes them when the reader option 'keywords' is not '#f'." | |
62560650 HWN |
111 | }, |
112 | { 0 }, | |
e6e4c9af MD |
113 | }; |
114 | ||
a1ec6916 | 115 | SCM_DEFINE (scm_print_options, "print-options-interface", 0, 1, 0, |
1bbd0b84 | 116 | (SCM setting), |
71331188 | 117 | "Option interface for the print options. Instead of using\n" |
1dd05fd8 MG |
118 | "this procedure directly, use the procedures\n" |
119 | "@code{print-enable}, @code{print-disable}, @code{print-set!}\n" | |
120 | "and @code{print-options}.") | |
1bbd0b84 | 121 | #define FUNC_NAME s_scm_print_options |
e6e4c9af | 122 | { |
a51ea417 | 123 | SCM ans = scm_options (setting, |
b7ff98dd | 124 | scm_print_opts, |
1bbd0b84 | 125 | FUNC_NAME); |
e6e4c9af MD |
126 | return ans; |
127 | } | |
1bbd0b84 | 128 | #undef FUNC_NAME |
e6e4c9af | 129 | |
0f2d19dd JB |
130 | \f |
131 | /* {Printing of Scheme Objects} | |
132 | */ | |
133 | ||
a51ea417 | 134 | /* Detection of circular references. |
c62fbfe1 MD |
135 | * |
136 | * Due to other constraints in the implementation, this code has bad | |
5d46ebe3 MD |
137 | * time complexity (O (depth * N)), The printer code can be |
138 | * rewritten to be O(N). | |
a51ea417 | 139 | */ |
dbb5de29 NJ |
140 | #define PUSH_REF(pstate, obj) \ |
141 | do \ | |
142 | { \ | |
143 | PSTATE_STACK_SET (pstate, pstate->top, obj); \ | |
144 | pstate->top++; \ | |
145 | if (pstate->top == pstate->ceiling) \ | |
146 | grow_ref_stack (pstate); \ | |
1bbd0b84 | 147 | } while(0) |
a51ea417 | 148 | |
dbb5de29 NJ |
149 | #define ENTER_NESTED_DATA(pstate, obj, label) \ |
150 | do \ | |
151 | { \ | |
152 | register unsigned long i; \ | |
153 | for (i = 0; i < pstate->top; ++i) \ | |
154 | if (scm_is_eq (PSTATE_STACK_REF (pstate, i), (obj))) \ | |
155 | goto label; \ | |
156 | if (pstate->fancyp) \ | |
157 | { \ | |
158 | if (pstate->top - pstate->list_offset >= pstate->level) \ | |
159 | { \ | |
160 | scm_putc ('#', port); \ | |
161 | return; \ | |
162 | } \ | |
163 | } \ | |
164 | PUSH_REF(pstate, obj); \ | |
1bbd0b84 | 165 | } while(0) |
a51ea417 | 166 | |
dbb5de29 NJ |
167 | #define EXIT_NESTED_DATA(pstate) \ |
168 | do \ | |
169 | { \ | |
170 | --pstate->top; \ | |
171 | PSTATE_STACK_SET (pstate, pstate->top, SCM_UNDEFINED); \ | |
172 | } \ | |
173 | while (0) | |
c62fbfe1 | 174 | |
d5cf5324 DH |
175 | SCM scm_print_state_vtable = SCM_BOOL_F; |
176 | static SCM print_state_pool = SCM_EOL; | |
9de87eea | 177 | scm_i_pthread_mutex_t print_state_mutex = SCM_I_PTHREAD_MUTEX_INITIALIZER; |
c4f37e80 | 178 | |
f843a84c | 179 | #ifdef GUILE_DEBUG /* Used for debugging purposes */ |
1cc91f1b | 180 | |
3b3b36dd | 181 | SCM_DEFINE (scm_current_pstate, "current-pstate", 0, 0, 0, |
1bbd0b84 | 182 | (), |
d5cf5324 | 183 | "Return the current-pstate -- the car of the\n" |
5352393c MG |
184 | "@code{print_state_pool}. @code{current-pstate} is only\n" |
185 | "included in @code{--enable-guile-debug} builds.") | |
1bbd0b84 | 186 | #define FUNC_NAME s_scm_current_pstate |
c62fbfe1 | 187 | { |
d2e53ed6 | 188 | if (!scm_is_null (print_state_pool)) |
d5cf5324 | 189 | return SCM_CAR (print_state_pool); |
a0adfbf0 | 190 | else |
0a284a4e | 191 | return SCM_BOOL_F; |
c62fbfe1 | 192 | } |
1bbd0b84 GB |
193 | #undef FUNC_NAME |
194 | ||
c62fbfe1 MD |
195 | #endif |
196 | ||
197 | #define PSTATE_SIZE 50L | |
198 | ||
698c0295 | 199 | static SCM |
1bbd0b84 | 200 | make_print_state (void) |
698c0295 | 201 | { |
d5cf5324 DH |
202 | SCM print_state |
203 | = scm_make_struct (scm_print_state_vtable, SCM_INUM0, SCM_EOL); | |
bf685b6d | 204 | scm_print_state *pstate = SCM_PRINT_STATE (print_state); |
00ffa0e7 | 205 | pstate->ref_vect = scm_c_make_vector (PSTATE_SIZE, SCM_UNDEFINED); |
4057a3e0 | 206 | pstate->ceiling = SCM_SIMPLE_VECTOR_LENGTH (pstate->ref_vect); |
d232520a | 207 | pstate->highlight_objects = SCM_EOL; |
698c0295 MD |
208 | return print_state; |
209 | } | |
1cc91f1b | 210 | |
c62fbfe1 MD |
211 | SCM |
212 | scm_make_print_state () | |
c62fbfe1 | 213 | { |
230d095f | 214 | SCM answer = SCM_BOOL_F; |
698c0295 MD |
215 | |
216 | /* First try to allocate a print state from the pool */ | |
9de87eea | 217 | scm_i_pthread_mutex_lock (&print_state_mutex); |
d2e53ed6 | 218 | if (!scm_is_null (print_state_pool)) |
698c0295 | 219 | { |
d5cf5324 DH |
220 | answer = SCM_CAR (print_state_pool); |
221 | print_state_pool = SCM_CDR (print_state_pool); | |
698c0295 | 222 | } |
9de87eea | 223 | scm_i_pthread_mutex_unlock (&print_state_mutex); |
698c0295 | 224 | |
7888309b | 225 | return scm_is_false (answer) ? make_print_state () : answer; |
c62fbfe1 | 226 | } |
a51ea417 | 227 | |
698c0295 | 228 | void |
6e8d25a6 | 229 | scm_free_print_state (SCM print_state) |
698c0295 MD |
230 | { |
231 | SCM handle; | |
232 | scm_print_state *pstate = SCM_PRINT_STATE (print_state); | |
233 | /* Cleanup before returning print state to pool. | |
234 | * It is better to do it here. Doing it in scm_prin1 | |
235 | * would cost more since that function is called much more | |
236 | * often. | |
237 | */ | |
238 | pstate->fancyp = 0; | |
bb35f315 | 239 | pstate->revealed = 0; |
d232520a | 240 | pstate->highlight_objects = SCM_EOL; |
9de87eea | 241 | scm_i_pthread_mutex_lock (&print_state_mutex); |
16d4699b | 242 | handle = scm_cons (print_state, print_state_pool); |
d5cf5324 | 243 | print_state_pool = handle; |
9de87eea | 244 | scm_i_pthread_mutex_unlock (&print_state_mutex); |
dfd03fb9 MD |
245 | } |
246 | ||
247 | SCM | |
248 | scm_i_port_with_print_state (SCM port, SCM print_state) | |
249 | { | |
250 | if (SCM_UNBNDP (print_state)) | |
251 | { | |
252 | if (SCM_PORT_WITH_PS_P (port)) | |
253 | return port; | |
254 | else | |
255 | print_state = scm_make_print_state (); | |
256 | /* port does not need to be coerced since it doesn't have ps */ | |
257 | } | |
258 | else | |
259 | port = SCM_COERCE_OUTPORT (port); | |
260 | SCM_RETURN_NEWSMOB (scm_tc16_port_with_ps, | |
261 | SCM_UNPACK (scm_cons (port, print_state))); | |
698c0295 | 262 | } |
1cc91f1b | 263 | |
a51ea417 | 264 | static void |
1bbd0b84 | 265 | grow_ref_stack (scm_print_state *pstate) |
a51ea417 | 266 | { |
4057a3e0 MV |
267 | SCM old_vect = pstate->ref_vect; |
268 | size_t old_size = SCM_SIMPLE_VECTOR_LENGTH (old_vect); | |
269 | size_t new_size = 2 * pstate->ceiling; | |
00ffa0e7 | 270 | SCM new_vect = scm_c_make_vector (new_size, SCM_UNDEFINED); |
b17004b8 DH |
271 | unsigned long int i; |
272 | ||
273 | for (i = 0; i != old_size; ++i) | |
4057a3e0 | 274 | SCM_SIMPLE_VECTOR_SET (new_vect, i, SCM_SIMPLE_VECTOR_REF (old_vect, i)); |
b17004b8 DH |
275 | |
276 | pstate->ref_vect = new_vect; | |
bf685b6d | 277 | pstate->ceiling = new_size; |
a51ea417 MD |
278 | } |
279 | ||
509759dd MV |
280 | #define PSTATE_STACK_REF(p,i) SCM_SIMPLE_VECTOR_REF((p)->ref_vect, (i)) |
281 | #define PSTATE_STACK_SET(p,i,v) SCM_SIMPLE_VECTOR_SET((p)->ref_vect, (i), (v)) | |
1cc91f1b | 282 | |
a51ea417 | 283 | static void |
34d19ef6 | 284 | print_circref (SCM port, scm_print_state *pstate, SCM ref) |
a51ea417 | 285 | { |
c014a02e ML |
286 | register long i; |
287 | long self = pstate->top - 1; | |
c62fbfe1 | 288 | i = pstate->top - 1; |
509759dd | 289 | if (scm_is_pair (PSTATE_STACK_REF (pstate, i))) |
c62fbfe1 MD |
290 | { |
291 | while (i > 0) | |
292 | { | |
509759dd MV |
293 | if (!scm_is_pair (PSTATE_STACK_REF (pstate, i-1)) |
294 | || !scm_is_eq (SCM_CDR (PSTATE_STACK_REF (pstate, i-1)), | |
295 | SCM_CDR (PSTATE_STACK_REF (pstate, i)))) | |
c62fbfe1 MD |
296 | break; |
297 | --i; | |
298 | } | |
299 | self = i; | |
300 | } | |
301 | for (i = pstate->top - 1; 1; --i) | |
509759dd | 302 | if (scm_is_eq (PSTATE_STACK_REF(pstate, i), ref)) |
c62fbfe1 | 303 | break; |
b7f3516f | 304 | scm_putc ('#', port); |
c62fbfe1 | 305 | scm_intprint (i - self, 10, port); |
b7f3516f | 306 | scm_putc ('#', port); |
a51ea417 MD |
307 | } |
308 | ||
6662998f MV |
309 | /* Print the name of a symbol. */ |
310 | ||
475fa9a5 | 311 | static int |
e23106d5 | 312 | quote_keywordish_symbol (SCM symbol) |
475fa9a5 MV |
313 | { |
314 | SCM option; | |
315 | ||
e23106d5 MG |
316 | if (scm_i_symbol_ref (symbol, 0) != ':' |
317 | && scm_i_symbol_ref (symbol, scm_i_symbol_length (symbol) - 1) != ':') | |
475fa9a5 MV |
318 | return 0; |
319 | ||
320 | option = SCM_PRINT_KEYWORD_STYLE; | |
321 | if (scm_is_false (option)) | |
322 | return 0; | |
323 | if (scm_is_eq (option, sym_reader)) | |
324 | return scm_is_true (SCM_PACK (SCM_KEYWORD_STYLE)); | |
325 | return 1; | |
326 | } | |
327 | ||
6662998f | 328 | void |
e23106d5 | 329 | scm_i_print_symbol_name (SCM str, SCM port) |
6662998f | 330 | { |
c6b49e89 MV |
331 | /* This points to the first character that has not yet been written to the |
332 | * port. */ | |
333 | size_t pos = 0; | |
334 | /* This points to the character we're currently looking at. */ | |
6662998f | 335 | size_t end; |
c6b49e89 MV |
336 | /* If the name contains weird characters, we'll escape them with |
337 | * backslashes and set this flag; it indicates that we should surround the | |
338 | * name with "#{" and "}#". */ | |
339 | int weird = 0; | |
340 | /* Backslashes are not sufficient to make a name weird, but if a name is | |
341 | * weird because of other characters, backslahes need to be escaped too. | |
342 | * The first time we see a backslash, we set maybe_weird, and mw_pos points | |
343 | * to the backslash. Then if the name turns out to be weird, we re-process | |
327967ef MV |
344 | * everything starting from mw_pos. |
345 | * We could instead make backslashes always weird. This is not necessary | |
346 | * to ensure that the output is (read)-able, but it would make this code | |
347 | * simpler and faster. */ | |
c6b49e89 | 348 | int maybe_weird = 0; |
6662998f | 349 | size_t mw_pos = 0; |
e23106d5 MG |
350 | size_t len = scm_i_symbol_length (str); |
351 | scm_t_wchar str0 = scm_i_symbol_ref (str, 0); | |
6662998f | 352 | |
e23106d5 MG |
353 | if (len == 0 || str0 == '\'' || str0 == '`' || str0 == ',' |
354 | || quote_keywordish_symbol (str) | |
355 | || (str0 == '.' && len == 1) | |
356 | || scm_is_true (scm_i_string_to_number (scm_symbol_to_string (str), 10))) | |
6662998f MV |
357 | { |
358 | scm_lfwrite ("#{", 2, port); | |
359 | weird = 1; | |
360 | } | |
c6b49e89 | 361 | |
6662998f | 362 | for (end = pos; end < len; ++end) |
e23106d5 | 363 | switch (scm_i_symbol_ref (str, end)) |
6662998f MV |
364 | { |
365 | #ifdef BRACKETS_AS_PARENS | |
366 | case '[': | |
367 | case ']': | |
368 | #endif | |
369 | case '(': | |
370 | case ')': | |
371 | case '"': | |
372 | case ';': | |
c6b49e89 | 373 | case '#': |
6662998f MV |
374 | case SCM_WHITE_SPACES: |
375 | case SCM_LINE_INCREMENTORS: | |
376 | weird_handler: | |
377 | if (maybe_weird) | |
378 | { | |
379 | end = mw_pos; | |
380 | maybe_weird = 0; | |
381 | } | |
382 | if (!weird) | |
383 | { | |
384 | scm_lfwrite ("#{", 2, port); | |
385 | weird = 1; | |
386 | } | |
387 | if (pos < end) | |
e23106d5 | 388 | scm_lfwrite_substr (scm_symbol_to_string (str), pos, end, port); |
6662998f MV |
389 | { |
390 | char buf[2]; | |
391 | buf[0] = '\\'; | |
e23106d5 | 392 | buf[1] = (char) (unsigned char) scm_i_symbol_ref (str, end); |
6662998f MV |
393 | scm_lfwrite (buf, 2, port); |
394 | } | |
395 | pos = end + 1; | |
396 | break; | |
397 | case '\\': | |
398 | if (weird) | |
399 | goto weird_handler; | |
400 | if (!maybe_weird) | |
401 | { | |
402 | maybe_weird = 1; | |
403 | mw_pos = pos; | |
404 | } | |
405 | break; | |
6662998f MV |
406 | default: |
407 | break; | |
408 | } | |
409 | if (pos < end) | |
e23106d5 | 410 | scm_lfwrite_substr (scm_symbol_to_string (str), pos, end, port); |
6662998f MV |
411 | if (weird) |
412 | scm_lfwrite ("}#", 2, port); | |
413 | } | |
414 | ||
e23106d5 MG |
415 | void |
416 | scm_print_symbol_name (const char *str, size_t len, SCM port) | |
417 | { | |
418 | SCM symbol = scm_from_locale_symboln (str, len); | |
ab33782c | 419 | scm_i_print_symbol_name (symbol, port); |
e23106d5 MG |
420 | } |
421 | ||
c62fbfe1 | 422 | /* Print generally. Handles both write and display according to PSTATE. |
0f2d19dd | 423 | */ |
8b840115 MD |
424 | SCM_GPROC(s_write, "write", 1, 1, 0, scm_write, g_write); |
425 | SCM_GPROC(s_display, "display", 1, 1, 0, scm_display, g_display); | |
1cc91f1b | 426 | |
d232520a MV |
427 | static void iprin1 (SCM exp, SCM port, scm_print_state *pstate); |
428 | ||
dea901d6 MG |
429 | |
430 | /* Print a character as an octal or hex escape. */ | |
431 | #define PRINT_CHAR_ESCAPE(i, port) \ | |
432 | do \ | |
433 | { \ | |
434 | if (!SCM_R6RS_ESCAPES_P) \ | |
435 | scm_intprint (i, 8, port); \ | |
436 | else \ | |
437 | { \ | |
438 | scm_puts ("x", port); \ | |
439 | scm_intprint (i, 16, port); \ | |
440 | } \ | |
441 | } \ | |
442 | while (0) | |
443 | ||
444 | ||
0f2d19dd | 445 | void |
1bbd0b84 | 446 | scm_iprin1 (SCM exp, SCM port, scm_print_state *pstate) |
d232520a MV |
447 | { |
448 | if (pstate->fancyp | |
449 | && scm_is_true (scm_memq (exp, pstate->highlight_objects))) | |
450 | { | |
81ae25da | 451 | scm_display (SCM_PRINT_HIGHLIGHT_PREFIX, port); |
d232520a | 452 | iprin1 (exp, port, pstate); |
81ae25da | 453 | scm_display (SCM_PRINT_HIGHLIGHT_SUFFIX, port); |
d232520a MV |
454 | } |
455 | else | |
456 | iprin1 (exp, port, pstate); | |
457 | } | |
458 | ||
459 | static void | |
460 | iprin1 (SCM exp, SCM port, scm_print_state *pstate) | |
0f2d19dd | 461 | { |
54778cd3 | 462 | switch (SCM_ITAG3 (exp)) |
0f2d19dd | 463 | { |
e34f941a DH |
464 | case scm_tc3_tc7_1: |
465 | case scm_tc3_tc7_2: | |
466 | /* These tc3 tags should never occur in an immediate value. They are | |
467 | * only used in cell types of non-immediates, i. e. the value returned | |
468 | * by SCM_CELL_TYPE (exp) can use these tags. | |
469 | */ | |
470 | scm_ipruk ("immediate", exp, port); | |
471 | break; | |
472 | case scm_tc3_int_1: | |
473 | case scm_tc3_int_2: | |
e11e83f3 | 474 | scm_intprint (SCM_I_INUM (exp), 10, port); |
0f2d19dd | 475 | break; |
e34f941a | 476 | case scm_tc3_imm24: |
7866a09b | 477 | if (SCM_CHARP (exp)) |
0f2d19dd | 478 | { |
b7f3516f | 479 | if (SCM_WRITINGP (pstate)) |
07f49ac7 LC |
480 | write_character (SCM_CHAR (exp), port, 0); |
481 | else | |
b7f3516f | 482 | { |
07f49ac7 LC |
483 | if (!display_character (SCM_CHAR (exp), port, |
484 | scm_i_get_conversion_strategy (port))) | |
485 | scm_encoding_error (__func__, errno, | |
486 | "cannot convert to output locale", | |
487 | "UTF-32", scm_i_get_port_encoding (port), | |
488 | scm_string (scm_list_1 (exp))); | |
b7f3516f | 489 | } |
0f2d19dd | 490 | } |
a51ea417 | 491 | else if (SCM_IFLAGP (exp) |
e17d318f DH |
492 | && ((size_t) SCM_IFLAGNUM (exp) < (sizeof iflagnames / sizeof (char *)))) |
493 | { | |
494 | scm_puts (iflagnames [SCM_IFLAGNUM (exp)], port); | |
495 | } | |
0f2d19dd | 496 | else |
e34f941a DH |
497 | { |
498 | /* unknown immediate value */ | |
499 | scm_ipruk ("immediate", exp, port); | |
500 | } | |
0f2d19dd | 501 | break; |
e34f941a | 502 | case scm_tc3_cons: |
0f2d19dd JB |
503 | switch (SCM_TYP7 (exp)) |
504 | { | |
904a077d MV |
505 | case scm_tcs_struct: |
506 | { | |
507 | ENTER_NESTED_DATA (pstate, exp, circref); | |
508 | if (SCM_OBJ_CLASS_FLAGS (exp) & SCM_CLASSF_GOOPS) | |
509 | { | |
510 | SCM pwps, print = pstate->writingp ? g_write : g_display; | |
511 | if (!print) | |
512 | goto print_struct; | |
dfd03fb9 | 513 | pwps = scm_i_port_with_print_state (port, pstate->handle); |
7663c008 | 514 | pstate->revealed = 1; |
904a077d MV |
515 | scm_call_generic_2 (print, exp, pwps); |
516 | } | |
517 | else | |
518 | { | |
519 | print_struct: | |
520 | scm_print_struct (exp, port, pstate); | |
521 | } | |
522 | EXIT_NESTED_DATA (pstate); | |
523 | } | |
524 | break; | |
0f2d19dd JB |
525 | case scm_tcs_cons_imcar: |
526 | case scm_tcs_cons_nimcar: | |
c62fbfe1 MD |
527 | ENTER_NESTED_DATA (pstate, exp, circref); |
528 | scm_iprlist ("(", exp, ')', port, pstate); | |
529 | EXIT_NESTED_DATA (pstate); | |
a51ea417 MD |
530 | break; |
531 | circref: | |
c62fbfe1 | 532 | print_circref (port, pstate, exp); |
0f2d19dd | 533 | break; |
534c55a9 DH |
534 | case scm_tc7_number: |
535 | switch SCM_TYP16 (exp) { | |
536 | case scm_tc16_big: | |
537 | scm_bigprint (exp, port, pstate); | |
538 | break; | |
539 | case scm_tc16_real: | |
540 | scm_print_real (exp, port, pstate); | |
541 | break; | |
542 | case scm_tc16_complex: | |
543 | scm_print_complex (exp, port, pstate); | |
544 | break; | |
f92e85f7 MV |
545 | case scm_tc16_fraction: |
546 | scm_i_print_fraction (exp, port, pstate); | |
547 | break; | |
534c55a9 DH |
548 | } |
549 | break; | |
9c44cd45 MG |
550 | case scm_tc7_string: |
551 | if (SCM_WRITINGP (pstate)) | |
552 | { | |
07f49ac7 | 553 | size_t len, i; |
9c44cd45 | 554 | |
f4bc4e59 | 555 | display_character ('"', port, iconveh_question_mark); |
9c44cd45 MG |
556 | len = scm_i_string_length (exp); |
557 | for (i = 0; i < len; ++i) | |
07f49ac7 LC |
558 | write_character (scm_i_string_ref (exp, i), port, 1); |
559 | ||
f4bc4e59 | 560 | display_character ('"', port, iconveh_question_mark); |
9c44cd45 MG |
561 | scm_remember_upto_here_1 (exp); |
562 | } | |
563 | else | |
f4bc4e59 LC |
564 | { |
565 | size_t len, printed; | |
566 | ||
567 | len = scm_i_string_length (exp); | |
568 | printed = display_string (scm_i_string_data (exp), | |
569 | scm_i_is_narrow_string (exp), | |
570 | len, port, | |
571 | scm_i_get_conversion_strategy (port)); | |
572 | if (SCM_UNLIKELY (printed < len)) | |
573 | /* FIXME: Provide the error location. */ | |
574 | scm_encoding_error (__func__, errno, | |
575 | "cannot convert to output locale", | |
576 | "UTF-32", scm_i_get_port_encoding (port), | |
577 | exp); | |
578 | } | |
579 | ||
9c44cd45 MG |
580 | scm_remember_upto_here_1 (exp); |
581 | break; | |
28b06554 | 582 | case scm_tc7_symbol: |
cc95e00a | 583 | if (scm_i_symbol_is_interned (exp)) |
9ff28a13 | 584 | { |
e23106d5 | 585 | scm_i_print_symbol_name (exp, port); |
9ff28a13 MV |
586 | scm_remember_upto_here_1 (exp); |
587 | } | |
588 | else | |
589 | { | |
590 | scm_puts ("#<uninterned-symbol ", port); | |
e23106d5 | 591 | scm_i_print_symbol_name (exp, port); |
9ff28a13 | 592 | scm_putc (' ', port); |
0345e278 | 593 | scm_uintprint (SCM_UNPACK (exp), 16, port); |
9ff28a13 MV |
594 | scm_putc ('>', port); |
595 | } | |
6662998f | 596 | break; |
e5aca4b5 MV |
597 | case scm_tc7_variable: |
598 | scm_i_variable_print (exp, port, pstate); | |
599 | break; | |
2fb924f6 AW |
600 | case scm_tc7_program: |
601 | scm_i_program_print (exp, port, pstate); | |
602 | break; | |
5b46a8c2 LC |
603 | case scm_tc7_pointer: |
604 | scm_i_pointer_print (exp, port, pstate); | |
e2c2a699 | 605 | break; |
c99de5aa AW |
606 | case scm_tc7_hashtable: |
607 | scm_i_hashtable_print (exp, port, pstate); | |
608 | break; | |
9ea31741 AW |
609 | case scm_tc7_fluid: |
610 | scm_i_fluid_print (exp, port, pstate); | |
611 | break; | |
45cf2428 AW |
612 | case scm_tc7_dynamic_state: |
613 | scm_i_dynamic_state_print (exp, port, pstate); | |
614 | break; | |
6f3b0cc2 AW |
615 | case scm_tc7_frame: |
616 | scm_i_frame_print (exp, port, pstate); | |
617 | break; | |
618 | case scm_tc7_objcode: | |
619 | scm_i_objcode_print (exp, port, pstate); | |
620 | break; | |
621 | case scm_tc7_vm: | |
622 | scm_i_vm_print (exp, port, pstate); | |
623 | break; | |
624 | case scm_tc7_vm_cont: | |
625 | scm_i_vm_cont_print (exp, port, pstate); | |
626 | break; | |
bbb2ecd1 AW |
627 | case scm_tc7_prompt: |
628 | scm_i_prompt_print (exp, port, pstate); | |
629 | break; | |
630 | case scm_tc7_with_fluids: | |
631 | scm_i_with_fluids_print (exp, port, pstate); | |
632 | break; | |
0f2d19dd | 633 | case scm_tc7_wvect: |
c62fbfe1 | 634 | ENTER_NESTED_DATA (pstate, exp, circref); |
0f2d19dd | 635 | if (SCM_IS_WHVEC (exp)) |
b7f3516f | 636 | scm_puts ("#wh(", port); |
0f2d19dd | 637 | else |
b7f3516f | 638 | scm_puts ("#w(", port); |
0f2d19dd JB |
639 | goto common_vector_printer; |
640 | ||
807e5a66 LC |
641 | case scm_tc7_bytevector: |
642 | scm_i_print_bytevector (exp, port, pstate); | |
643 | break; | |
0f2d19dd | 644 | case scm_tc7_vector: |
c62fbfe1 | 645 | ENTER_NESTED_DATA (pstate, exp, circref); |
b7f3516f | 646 | scm_puts ("#(", port); |
0f2d19dd | 647 | common_vector_printer: |
9fbaf27c | 648 | { |
c014a02e | 649 | register long i; |
4057a3e0 | 650 | long last = SCM_SIMPLE_VECTOR_LENGTH (exp) - 1; |
9fbaf27c | 651 | int cutp = 0; |
4057a3e0 MV |
652 | if (pstate->fancyp |
653 | && SCM_SIMPLE_VECTOR_LENGTH (exp) > pstate->length) | |
9fbaf27c MD |
654 | { |
655 | last = pstate->length - 1; | |
656 | cutp = 1; | |
657 | } | |
c367c4b4 | 658 | if (SCM_I_WVECTP (exp)) |
9fbaf27c | 659 | { |
c367c4b4 LC |
660 | /* Elements of weak vectors may not be accessed via the |
661 | `SIMPLE_VECTOR_REF ()' macro. */ | |
662 | for (i = 0; i < last; ++i) | |
663 | { | |
664 | scm_iprin1 (scm_c_vector_ref (exp, i), | |
665 | port, pstate); | |
666 | scm_putc (' ', port); | |
667 | } | |
9fbaf27c | 668 | } |
c367c4b4 LC |
669 | else |
670 | { | |
671 | for (i = 0; i < last; ++i) | |
672 | { | |
673 | scm_iprin1 (SCM_SIMPLE_VECTOR_REF (exp, i), port, pstate); | |
674 | scm_putc (' ', port); | |
675 | } | |
676 | } | |
677 | ||
9fbaf27c MD |
678 | if (i == last) |
679 | { | |
680 | /* CHECK_INTS; */ | |
c367c4b4 | 681 | scm_iprin1 (scm_c_vector_ref (exp, i), port, pstate); |
9fbaf27c MD |
682 | } |
683 | if (cutp) | |
b7f3516f TT |
684 | scm_puts (" ...", port); |
685 | scm_putc (')', port); | |
9fbaf27c | 686 | } |
c62fbfe1 | 687 | EXIT_NESTED_DATA (pstate); |
0f2d19dd | 688 | break; |
0f2d19dd | 689 | case scm_tc7_port: |
5ca6dc39 JB |
690 | { |
691 | register long i = SCM_PTOBNUM (exp); | |
692 | if (i < scm_numptob | |
693 | && scm_ptobs[i].print | |
694 | && (scm_ptobs[i].print) (exp, port, pstate)) | |
a51ea417 | 695 | break; |
5ca6dc39 JB |
696 | goto punk; |
697 | } | |
698 | case scm_tc7_smob: | |
7a7f7c53 DH |
699 | ENTER_NESTED_DATA (pstate, exp, circref); |
700 | SCM_SMOB_DESCRIPTOR (exp).print (exp, port, pstate); | |
701 | EXIT_NESTED_DATA (pstate); | |
702 | break; | |
0f2d19dd | 703 | default: |
314b8716 | 704 | /* case scm_tcs_closures: */ |
a51ea417 MD |
705 | punk: |
706 | scm_ipruk ("type", exp, port); | |
0f2d19dd JB |
707 | } |
708 | } | |
709 | } | |
710 | ||
c62fbfe1 MD |
711 | /* Print states are necessary for circular reference safe printing. |
712 | * They are also expensive to allocate. Therefore print states are | |
713 | * kept in a pool so that they can be reused. | |
714 | */ | |
1cc91f1b | 715 | |
bb35f315 MV |
716 | /* The PORT argument can also be a print-state/port pair, which will |
717 | * then be used instead of allocating a new print state. This is | |
718 | * useful for continuing a chain of print calls from Scheme. */ | |
719 | ||
a51ea417 | 720 | void |
1bbd0b84 | 721 | scm_prin1 (SCM exp, SCM port, int writingp) |
a51ea417 | 722 | { |
c4f37e80 MV |
723 | SCM handle = SCM_BOOL_F; /* Will GC protect the handle whilst unlinked */ |
724 | SCM pstate_scm; | |
c62fbfe1 | 725 | scm_print_state *pstate; |
15635be5 | 726 | int old_writingp; |
c62fbfe1 | 727 | |
bb35f315 MV |
728 | /* If PORT is a print-state/port pair, use that. Else create a new |
729 | print-state. */ | |
c4f37e80 | 730 | |
0c95b57d | 731 | if (SCM_PORT_WITH_PS_P (port)) |
bb35f315 | 732 | { |
52235e71 MD |
733 | pstate_scm = SCM_PORT_WITH_PS_PS (port); |
734 | port = SCM_PORT_WITH_PS_PORT (port); | |
bb35f315 MV |
735 | } |
736 | else | |
c62fbfe1 | 737 | { |
c4f37e80 | 738 | /* First try to allocate a print state from the pool */ |
9de87eea | 739 | scm_i_pthread_mutex_lock (&print_state_mutex); |
d2e53ed6 | 740 | if (!scm_is_null (print_state_pool)) |
c4f37e80 | 741 | { |
d5cf5324 DH |
742 | handle = print_state_pool; |
743 | print_state_pool = SCM_CDR (print_state_pool); | |
c4f37e80 | 744 | } |
9de87eea | 745 | scm_i_pthread_mutex_unlock (&print_state_mutex); |
7888309b | 746 | if (scm_is_false (handle)) |
d5cf5324 | 747 | handle = scm_list_1 (make_print_state ()); |
c4f37e80 | 748 | pstate_scm = SCM_CAR (handle); |
c62fbfe1 | 749 | } |
c62fbfe1 | 750 | |
c4f37e80 | 751 | pstate = SCM_PRINT_STATE (pstate_scm); |
15635be5 | 752 | old_writingp = pstate->writingp; |
c62fbfe1 MD |
753 | pstate->writingp = writingp; |
754 | scm_iprin1 (exp, port, pstate); | |
15635be5 | 755 | pstate->writingp = old_writingp; |
c62fbfe1 | 756 | |
bb35f315 MV |
757 | /* Return print state to pool if it has been created above and |
758 | hasn't escaped to Scheme. */ | |
759 | ||
7888309b | 760 | if (scm_is_true (handle) && !pstate->revealed) |
c4f37e80 | 761 | { |
9de87eea | 762 | scm_i_pthread_mutex_lock (&print_state_mutex); |
d5cf5324 DH |
763 | SCM_SETCDR (handle, print_state_pool); |
764 | print_state_pool = handle; | |
9de87eea | 765 | scm_i_pthread_mutex_unlock (&print_state_mutex); |
c4f37e80 | 766 | } |
a51ea417 MD |
767 | } |
768 | ||
f4bc4e59 LC |
769 | /* Convert codepoint CH to UTF-8 and store the result in UTF8. Return |
770 | the number of bytes of the UTF-8-encoded string. */ | |
771 | static size_t | |
772 | codepoint_to_utf8 (scm_t_wchar ch, scm_t_uint8 utf8[4]) | |
9c44cd45 | 773 | { |
f4bc4e59 LC |
774 | size_t len; |
775 | scm_t_uint32 codepoint; | |
776 | ||
777 | codepoint = (scm_t_uint32) ch; | |
07f49ac7 | 778 | |
f4bc4e59 | 779 | if (codepoint <= 0x7f) |
07f49ac7 | 780 | { |
f4bc4e59 LC |
781 | len = 1; |
782 | utf8[0] = (scm_t_uint8) codepoint; | |
783 | } | |
784 | else if (codepoint <= 0x7ffUL) | |
785 | { | |
786 | len = 2; | |
787 | utf8[0] = 0xc0 | (codepoint >> 6); | |
788 | utf8[1] = 0x80 | (codepoint & 0x3f); | |
789 | } | |
790 | else if (codepoint <= 0xffffUL) | |
791 | { | |
792 | len = 3; | |
793 | utf8[0] = 0xe0 | (codepoint >> 12); | |
794 | utf8[1] = 0x80 | ((codepoint >> 6) & 0x3f); | |
795 | utf8[2] = 0x80 | (codepoint & 0x3f); | |
07f49ac7 LC |
796 | } |
797 | else | |
798 | { | |
f4bc4e59 LC |
799 | len = 4; |
800 | utf8[0] = 0xf0 | (codepoint >> 18); | |
801 | utf8[1] = 0x80 | ((codepoint >> 12) & 0x3f); | |
802 | utf8[2] = 0x80 | ((codepoint >> 6) & 0x3f); | |
803 | utf8[3] = 0x80 | (codepoint & 0x3f); | |
804 | } | |
805 | ||
806 | return len; | |
807 | } | |
808 | ||
809 | /* Display the LEN codepoints in STR to PORT according to STRATEGY; | |
810 | return the number of codepoints successfully displayed. If NARROW_P, | |
811 | then STR is interpreted as a sequence of `char', denoting a Latin-1 | |
812 | string; otherwise it's interpreted as a sequence of | |
813 | `scm_t_wchar'. */ | |
814 | static size_t | |
815 | display_string (const void *str, int narrow_p, | |
816 | size_t len, SCM port, | |
817 | scm_t_string_failed_conversion_handler strategy) | |
818 | ||
819 | { | |
820 | #define STR_REF(s, x) \ | |
821 | (narrow_p \ | |
822 | ? (scm_t_wchar) ((unsigned char *) (s))[x] \ | |
823 | : ((scm_t_wchar *) (s))[x]) | |
824 | ||
825 | size_t printed; | |
826 | scm_t_port *pt; | |
827 | ||
828 | pt = SCM_PTAB_ENTRY (port); | |
829 | ||
830 | if (SCM_UNLIKELY (pt->output_cd == (iconv_t) -1)) | |
831 | /* Initialize the conversion descriptors. */ | |
832 | scm_i_set_port_encoding_x (port, pt->encoding); | |
833 | ||
834 | printed = 0; | |
835 | ||
836 | while (len > printed) | |
837 | { | |
838 | size_t done, utf8_len, input_left, output_left, i; | |
839 | size_t codepoints_read, output_len; | |
840 | char *input, *output; | |
841 | char utf8_buf[256], encoded_output[256]; | |
842 | size_t offsets[256]; | |
843 | ||
844 | /* Convert STR to UTF-8. */ | |
845 | for (i = printed, utf8_len = 0, input = utf8_buf; | |
846 | i < len && utf8_len + 4 < sizeof (utf8_buf); | |
847 | i++) | |
07f49ac7 | 848 | { |
f4bc4e59 LC |
849 | offsets[utf8_len] = i; |
850 | utf8_len += codepoint_to_utf8 (STR_REF (str, i), | |
851 | (scm_t_uint8 *) input); | |
852 | input = utf8_buf + utf8_len; | |
853 | } | |
854 | ||
855 | input = utf8_buf; | |
856 | input_left = utf8_len; | |
857 | ||
858 | output = encoded_output; | |
859 | output_left = sizeof (encoded_output); | |
860 | ||
861 | done = iconv (pt->output_cd, &input, &input_left, | |
862 | &output, &output_left); | |
07f49ac7 | 863 | |
f4bc4e59 LC |
864 | output_len = sizeof (encoded_output) - output_left; |
865 | ||
866 | if (SCM_UNLIKELY (done == (size_t) -1)) | |
867 | { | |
868 | /* Reset the `iconv' state. */ | |
869 | iconv (pt->output_cd, NULL, NULL, NULL, NULL); | |
870 | ||
7174bc08 LC |
871 | /* Print the OUTPUT_LEN bytes successfully converted. */ |
872 | scm_lfwrite (encoded_output, output_len, port); | |
873 | ||
874 | /* See how many input codepoints these OUTPUT_LEN bytes | |
875 | corresponds to. */ | |
876 | codepoints_read = offsets[input - utf8_buf] - printed; | |
877 | printed += codepoints_read; | |
878 | ||
f4bc4e59 LC |
879 | if (errno == EILSEQ && |
880 | strategy != SCM_FAILED_CONVERSION_ERROR) | |
07f49ac7 | 881 | { |
f4bc4e59 LC |
882 | /* Conversion failed somewhere in INPUT and we want to |
883 | escape or substitute the offending input character. */ | |
884 | ||
f4bc4e59 | 885 | if (strategy == SCM_FAILED_CONVERSION_ESCAPE_SEQUENCE) |
f1ee6d54 | 886 | { |
f4bc4e59 LC |
887 | scm_t_wchar ch; |
888 | ||
889 | /* Find CH, the offending codepoint, and escape it. */ | |
890 | ch = STR_REF (str, offsets[input - utf8_buf]); | |
891 | write_character_escaped (ch, 1, port); | |
f1ee6d54 | 892 | } |
07f49ac7 | 893 | else |
f4bc4e59 LC |
894 | /* STRATEGY is `SCM_FAILED_CONVERSION_QUESTION_MARK'. */ |
895 | display_string ("?", 1, 1, port, strategy); | |
9c44cd45 | 896 | |
f4bc4e59 LC |
897 | printed++; |
898 | } | |
899 | else | |
900 | /* Something bad happened that we can't handle: bail out. */ | |
901 | break; | |
07f49ac7 LC |
902 | } |
903 | else | |
f4bc4e59 LC |
904 | { |
905 | /* INPUT was successfully converted, entirely; print the | |
906 | result. */ | |
907 | scm_lfwrite (encoded_output, output_len, port); | |
908 | codepoints_read = i - printed; | |
909 | printed += codepoints_read; | |
910 | } | |
07f49ac7 LC |
911 | } |
912 | ||
913 | return printed; | |
f4bc4e59 LC |
914 | #undef STR_REF |
915 | } | |
916 | ||
917 | /* Attempt to display CH to PORT according to STRATEGY. Return non-zero | |
918 | if CH was successfully displayed, zero otherwise (e.g., if it was not | |
919 | representable in PORT's encoding.) */ | |
920 | static int | |
921 | display_character (scm_t_wchar ch, SCM port, | |
922 | scm_t_string_failed_conversion_handler strategy) | |
923 | { | |
924 | return display_string (&ch, 0, 1, port, strategy) == 1; | |
07f49ac7 LC |
925 | } |
926 | ||
33d92fe6 LC |
927 | /* Attempt to pretty-print CH, a combining character, to PORT. Return |
928 | zero upon failure, non-zero otherwise. The idea is to print CH above | |
929 | a dotted circle to make it more visible. */ | |
930 | static int | |
931 | write_combining_character (scm_t_wchar ch, SCM port) | |
932 | { | |
f4bc4e59 LC |
933 | scm_t_wchar str[2]; |
934 | ||
935 | str[0] = SCM_CODEPOINT_DOTTED_CIRCLE; | |
936 | str[1] = ch; | |
937 | ||
938 | return display_string (str, 0, 2, port, iconveh_error) == 2; | |
939 | } | |
33d92fe6 | 940 | |
f4bc4e59 LC |
941 | /* Write CH to PORT in its escaped form, using the string escape syntax |
942 | if STRING_ESCAPES_P is non-zero. */ | |
943 | static void | |
944 | write_character_escaped (scm_t_wchar ch, int string_escapes_p, SCM port) | |
945 | { | |
946 | if (string_escapes_p) | |
33d92fe6 | 947 | { |
f4bc4e59 LC |
948 | /* Represent CH using the in-string escape syntax. */ |
949 | ||
950 | static const char hex[] = "0123456789abcdef"; | |
951 | static const char escapes[7] = "abtnvfr"; | |
952 | char buf[9]; | |
953 | ||
954 | if (ch >= 0x07 && ch <= 0x0D && ch != 0x0A) | |
33d92fe6 | 955 | { |
f4bc4e59 LC |
956 | /* Use special escapes for some C0 controls. */ |
957 | buf[0] = '\\'; | |
958 | buf[1] = escapes[ch - 0x07]; | |
959 | scm_lfwrite (buf, 2, port); | |
960 | } | |
961 | else if (!SCM_R6RS_ESCAPES_P) | |
962 | { | |
963 | if (ch <= 0xFF) | |
964 | { | |
965 | buf[0] = '\\'; | |
966 | buf[1] = 'x'; | |
967 | buf[2] = hex[ch / 16]; | |
968 | buf[3] = hex[ch % 16]; | |
969 | scm_lfwrite (buf, 4, port); | |
970 | } | |
971 | else if (ch <= 0xFFFF) | |
972 | { | |
973 | buf[0] = '\\'; | |
974 | buf[1] = 'u'; | |
975 | buf[2] = hex[(ch & 0xF000) >> 12]; | |
976 | buf[3] = hex[(ch & 0xF00) >> 8]; | |
977 | buf[4] = hex[(ch & 0xF0) >> 4]; | |
978 | buf[5] = hex[(ch & 0xF)]; | |
979 | scm_lfwrite (buf, 6, port); | |
980 | } | |
981 | else if (ch > 0xFFFF) | |
982 | { | |
983 | buf[0] = '\\'; | |
984 | buf[1] = 'U'; | |
985 | buf[2] = hex[(ch & 0xF00000) >> 20]; | |
986 | buf[3] = hex[(ch & 0xF0000) >> 16]; | |
987 | buf[4] = hex[(ch & 0xF000) >> 12]; | |
988 | buf[5] = hex[(ch & 0xF00) >> 8]; | |
989 | buf[6] = hex[(ch & 0xF0) >> 4]; | |
990 | buf[7] = hex[(ch & 0xF)]; | |
991 | scm_lfwrite (buf, 8, port); | |
992 | } | |
33d92fe6 LC |
993 | } |
994 | else | |
f4bc4e59 LC |
995 | { |
996 | /* Print an R6RS variable-length hex escape: "\xNNNN;". */ | |
997 | scm_t_wchar ch2 = ch; | |
998 | ||
999 | int i = 8; | |
1000 | buf[i] = ';'; | |
1001 | i --; | |
1002 | if (ch == 0) | |
1003 | buf[i--] = '0'; | |
1004 | else | |
1005 | while (ch2 > 0) | |
1006 | { | |
1007 | buf[i] = hex[ch2 & 0xF]; | |
1008 | ch2 >>= 4; | |
1009 | i --; | |
1010 | } | |
1011 | buf[i] = 'x'; | |
1012 | i --; | |
1013 | buf[i] = '\\'; | |
1014 | scm_lfwrite (buf + i, 9 - i, port); | |
1015 | } | |
33d92fe6 LC |
1016 | } |
1017 | else | |
f4bc4e59 LC |
1018 | { |
1019 | /* Represent CH using the character escape syntax. */ | |
1020 | const char *name; | |
33d92fe6 | 1021 | |
f4bc4e59 LC |
1022 | name = scm_i_charname (SCM_MAKE_CHAR (ch)); |
1023 | if (name != NULL) | |
1024 | scm_puts (name, port); | |
1025 | else | |
1026 | PRINT_CHAR_ESCAPE (ch, port); | |
1027 | } | |
33d92fe6 LC |
1028 | } |
1029 | ||
07f49ac7 LC |
1030 | /* Write CH to PORT, escaping it if it's non-graphic or not |
1031 | representable in PORT's encoding. If STRING_ESCAPES_P is true and CH | |
1032 | needs to be escaped, it is escaped using the in-string escape syntax; | |
1033 | otherwise the character escape syntax is used. */ | |
1034 | static void | |
1035 | write_character (scm_t_wchar ch, SCM port, int string_escapes_p) | |
1036 | { | |
1037 | int printed = 0; | |
f4bc4e59 LC |
1038 | scm_t_string_failed_conversion_handler strategy; |
1039 | ||
1040 | strategy = scm_i_get_conversion_strategy (port); | |
07f49ac7 LC |
1041 | |
1042 | if (string_escapes_p) | |
1043 | { | |
1044 | /* Check if CH deserves special treatment. */ | |
1045 | if (ch == '"' || ch == '\\') | |
1046 | { | |
f4bc4e59 LC |
1047 | display_character ('\\', port, iconveh_question_mark); |
1048 | display_character (ch, port, strategy); | |
07f49ac7 LC |
1049 | printed = 1; |
1050 | } | |
1051 | else if (ch == ' ' || ch == '\n') | |
1052 | { | |
f4bc4e59 | 1053 | display_character (ch, port, strategy); |
07f49ac7 LC |
1054 | printed = 1; |
1055 | } | |
1056 | } | |
1057 | else | |
33d92fe6 | 1058 | { |
f4bc4e59 | 1059 | display_string ("#\\", 1, 2, port, iconveh_question_mark); |
33d92fe6 LC |
1060 | |
1061 | if (uc_combining_class (ch) != UC_CCC_NR) | |
1062 | /* Character is a combining character, so attempt to | |
1063 | pretty-print it. */ | |
1064 | printed = write_combining_character (ch, port); | |
1065 | } | |
07f49ac7 LC |
1066 | |
1067 | if (!printed | |
1068 | && uc_is_general_category_withtable (ch, | |
1069 | UC_CATEGORY_MASK_L | | |
1070 | UC_CATEGORY_MASK_M | | |
1071 | UC_CATEGORY_MASK_N | | |
1072 | UC_CATEGORY_MASK_P | | |
1073 | UC_CATEGORY_MASK_S)) | |
1074 | /* CH is graphic; attempt to display it. */ | |
1075 | printed = display_character (ch, port, iconveh_error); | |
1076 | ||
1077 | if (!printed) | |
f4bc4e59 LC |
1078 | /* CH isn't graphic or cannot be represented in PORT's encoding. */ |
1079 | write_character_escaped (ch, string_escapes_p, port); | |
9c44cd45 | 1080 | } |
0f2d19dd JB |
1081 | |
1082 | /* Print an integer. | |
1083 | */ | |
1cc91f1b | 1084 | |
0f2d19dd | 1085 | void |
a406c9e9 | 1086 | scm_intprint (scm_t_intmax n, int radix, SCM port) |
0f2d19dd JB |
1087 | { |
1088 | char num_buf[SCM_INTBUFLEN]; | |
b7f3516f | 1089 | scm_lfwrite (num_buf, scm_iint2str (n, radix, num_buf), port); |
0f2d19dd JB |
1090 | } |
1091 | ||
a406c9e9 MV |
1092 | void |
1093 | scm_uintprint (scm_t_uintmax n, int radix, SCM port) | |
1094 | { | |
1095 | char num_buf[SCM_INTBUFLEN]; | |
1096 | scm_lfwrite (num_buf, scm_iuint2str (n, radix, num_buf), port); | |
1097 | } | |
1098 | ||
0f2d19dd JB |
1099 | /* Print an object of unrecognized type. |
1100 | */ | |
1cc91f1b | 1101 | |
0f2d19dd | 1102 | void |
1bbd0b84 | 1103 | scm_ipruk (char *hdr, SCM ptr, SCM port) |
0f2d19dd | 1104 | { |
b7f3516f TT |
1105 | scm_puts ("#<unknown-", port); |
1106 | scm_puts (hdr, port); | |
26224b3f | 1107 | if (1) /* (scm_in_heap_p (ptr)) */ /* FIXME */ |
0f2d19dd | 1108 | { |
b7f3516f | 1109 | scm_puts (" (0x", port); |
0345e278 | 1110 | scm_uintprint (SCM_CELL_WORD_0 (ptr), 16, port); |
b7f3516f | 1111 | scm_puts (" . 0x", port); |
0345e278 | 1112 | scm_uintprint (SCM_CELL_WORD_1 (ptr), 16, port); |
b7f3516f | 1113 | scm_puts (") @", port); |
0f2d19dd | 1114 | } |
b7f3516f | 1115 | scm_puts (" 0x", port); |
0345e278 | 1116 | scm_uintprint (SCM_UNPACK (ptr), 16, port); |
b7f3516f | 1117 | scm_putc ('>', port); |
0f2d19dd JB |
1118 | } |
1119 | ||
1cc91f1b | 1120 | |
904a077d | 1121 | /* Print a list. |
22a52da1 | 1122 | */ |
0f2d19dd | 1123 | void |
34d19ef6 | 1124 | scm_iprlist (char *hdr, SCM exp, int tlr, SCM port, scm_print_state *pstate) |
0f2d19dd | 1125 | { |
c62fbfe1 | 1126 | register SCM hare, tortoise; |
c014a02e | 1127 | long floor = pstate->top - 2; |
b7f3516f | 1128 | scm_puts (hdr, port); |
0f2d19dd | 1129 | /* CHECK_INTS; */ |
c62fbfe1 MD |
1130 | if (pstate->fancyp) |
1131 | goto fancy_printing; | |
1132 | ||
1133 | /* Run a hare and tortoise so that total time complexity will be | |
1134 | O(depth * N) instead of O(N^2). */ | |
1135 | hare = SCM_CDR (exp); | |
1136 | tortoise = exp; | |
d2e53ed6 | 1137 | while (scm_is_pair (hare)) |
c62fbfe1 | 1138 | { |
bc36d050 | 1139 | if (scm_is_eq (hare, tortoise)) |
c62fbfe1 MD |
1140 | goto fancy_printing; |
1141 | hare = SCM_CDR (hare); | |
d2e53ed6 | 1142 | if (!scm_is_pair (hare)) |
c62fbfe1 MD |
1143 | break; |
1144 | hare = SCM_CDR (hare); | |
1145 | tortoise = SCM_CDR (tortoise); | |
1146 | } | |
1147 | ||
1148 | /* No cdr cycles intrinsic to this list */ | |
1149 | scm_iprin1 (SCM_CAR (exp), port, pstate); | |
d2e53ed6 | 1150 | for (exp = SCM_CDR (exp); scm_is_pair (exp); exp = SCM_CDR (exp)) |
0f2d19dd | 1151 | { |
c014a02e | 1152 | register long i; |
5ca6dc39 | 1153 | |
c62fbfe1 | 1154 | for (i = floor; i >= 0; --i) |
509759dd | 1155 | if (scm_is_eq (PSTATE_STACK_REF(pstate, i), exp)) |
c62fbfe1 MD |
1156 | goto circref; |
1157 | PUSH_REF (pstate, exp); | |
b7f3516f | 1158 | scm_putc (' ', port); |
0f2d19dd | 1159 | /* CHECK_INTS; */ |
c62fbfe1 | 1160 | scm_iprin1 (SCM_CAR (exp), port, pstate); |
0f2d19dd | 1161 | } |
c96d76b8 | 1162 | if (!SCM_NULL_OR_NIL_P (exp)) |
0f2d19dd | 1163 | { |
b7f3516f | 1164 | scm_puts (" . ", port); |
c62fbfe1 | 1165 | scm_iprin1 (exp, port, pstate); |
0f2d19dd | 1166 | } |
c62fbfe1 | 1167 | |
a51ea417 | 1168 | end: |
b7f3516f | 1169 | scm_putc (tlr, port); |
c62fbfe1 | 1170 | pstate->top = floor + 2; |
a51ea417 | 1171 | return; |
c62fbfe1 MD |
1172 | |
1173 | fancy_printing: | |
1174 | { | |
c014a02e | 1175 | long n = pstate->length; |
c62fbfe1 MD |
1176 | |
1177 | scm_iprin1 (SCM_CAR (exp), port, pstate); | |
1178 | exp = SCM_CDR (exp); --n; | |
d2e53ed6 | 1179 | for (; scm_is_pair (exp); exp = SCM_CDR (exp)) |
c62fbfe1 | 1180 | { |
c014a02e | 1181 | register unsigned long i; |
5ca6dc39 | 1182 | |
c62fbfe1 | 1183 | for (i = 0; i < pstate->top; ++i) |
509759dd | 1184 | if (scm_is_eq (PSTATE_STACK_REF(pstate, i), exp)) |
c62fbfe1 MD |
1185 | goto fancy_circref; |
1186 | if (pstate->fancyp) | |
1187 | { | |
1188 | if (n == 0) | |
1189 | { | |
b7f3516f | 1190 | scm_puts (" ...", port); |
c62fbfe1 MD |
1191 | goto skip_tail; |
1192 | } | |
1193 | else | |
1194 | --n; | |
1195 | } | |
1196 | PUSH_REF(pstate, exp); | |
1197 | ++pstate->list_offset; | |
b7f3516f | 1198 | scm_putc (' ', port); |
c62fbfe1 MD |
1199 | /* CHECK_INTS; */ |
1200 | scm_iprin1 (SCM_CAR (exp), port, pstate); | |
1201 | } | |
1202 | } | |
c96d76b8 | 1203 | if (!SCM_NULL_OR_NIL_P (exp)) |
c62fbfe1 | 1204 | { |
b7f3516f | 1205 | scm_puts (" . ", port); |
c62fbfe1 MD |
1206 | scm_iprin1 (exp, port, pstate); |
1207 | } | |
1208 | skip_tail: | |
1209 | pstate->list_offset -= pstate->top - floor - 2; | |
a51ea417 | 1210 | goto end; |
a51ea417 | 1211 | |
c62fbfe1 MD |
1212 | fancy_circref: |
1213 | pstate->list_offset -= pstate->top - floor - 2; | |
1214 | ||
1215 | circref: | |
b7f3516f | 1216 | scm_puts (" . ", port); |
c62fbfe1 MD |
1217 | print_circref (port, pstate, exp); |
1218 | goto end; | |
0f2d19dd JB |
1219 | } |
1220 | ||
1221 | \f | |
1222 | ||
bb35f315 MV |
1223 | int |
1224 | scm_valid_oport_value_p (SCM val) | |
1225 | { | |
368cf54d GB |
1226 | return (SCM_OPOUTPORTP (val) |
1227 | || (SCM_PORT_WITH_PS_P (val) | |
1228 | && SCM_OPOUTPORTP (SCM_PORT_WITH_PS_PORT (val)))); | |
bb35f315 MV |
1229 | } |
1230 | ||
8b840115 | 1231 | /* SCM_GPROC(s_write, "write", 1, 1, 0, scm_write, g_write); */ |
1cc91f1b | 1232 | |
0f2d19dd | 1233 | SCM |
1bbd0b84 | 1234 | scm_write (SCM obj, SCM port) |
0f2d19dd JB |
1235 | { |
1236 | if (SCM_UNBNDP (port)) | |
9de87eea | 1237 | port = scm_current_output_port (); |
3eb7e6ee JB |
1238 | |
1239 | SCM_ASSERT (scm_valid_oport_value_p (port), port, SCM_ARG2, s_write); | |
bb35f315 | 1240 | |
a51ea417 | 1241 | scm_prin1 (obj, port, 1); |
0f2d19dd JB |
1242 | return SCM_UNSPECIFIED; |
1243 | } | |
1244 | ||
1245 | ||
8b840115 | 1246 | /* SCM_GPROC(s_display, "display", 1, 1, 0, scm_display, g_display); */ |
1cc91f1b | 1247 | |
0f2d19dd | 1248 | SCM |
1bbd0b84 | 1249 | scm_display (SCM obj, SCM port) |
0f2d19dd JB |
1250 | { |
1251 | if (SCM_UNBNDP (port)) | |
9de87eea | 1252 | port = scm_current_output_port (); |
3eb7e6ee JB |
1253 | |
1254 | SCM_ASSERT (scm_valid_oport_value_p (port), port, SCM_ARG2, s_display); | |
bb35f315 | 1255 | |
a51ea417 | 1256 | scm_prin1 (obj, port, 0); |
0f2d19dd JB |
1257 | return SCM_UNSPECIFIED; |
1258 | } | |
1259 | ||
70d63753 GB |
1260 | |
1261 | SCM_DEFINE (scm_simple_format, "simple-format", 2, 0, 1, | |
1262 | (SCM destination, SCM message, SCM args), | |
eca65e90 MG |
1263 | "Write @var{message} to @var{destination}, defaulting to\n" |
1264 | "the current output port.\n" | |
1265 | "@var{message} can contain @code{~A} (was @code{%s}) and\n" | |
1266 | "@code{~S} (was @code{%S}) escapes. When printed,\n" | |
1267 | "the escapes are replaced with corresponding members of\n" | |
1268 | "@var{ARGS}:\n" | |
1269 | "@code{~A} formats using @code{display} and @code{~S} formats\n" | |
1270 | "using @code{write}.\n" | |
1271 | "If @var{destination} is @code{#t}, then use the current output\n" | |
1272 | "port, if @var{destination} is @code{#f}, then return a string\n" | |
1273 | "containing the formatted text. Does not add a trailing newline.") | |
70d63753 GB |
1274 | #define FUNC_NAME s_scm_simple_format |
1275 | { | |
dfd03fb9 | 1276 | SCM port, answer = SCM_UNSPECIFIED; |
70d63753 GB |
1277 | int fReturnString = 0; |
1278 | int writingp; | |
889975e5 | 1279 | size_t start, p, end; |
70d63753 | 1280 | |
bc36d050 | 1281 | if (scm_is_eq (destination, SCM_BOOL_T)) |
daba1a71 | 1282 | { |
9de87eea | 1283 | destination = port = scm_current_output_port (); |
daba1a71 | 1284 | } |
7888309b | 1285 | else if (scm_is_false (destination)) |
daba1a71 MD |
1286 | { |
1287 | fReturnString = 1; | |
dfd03fb9 MD |
1288 | port = scm_mkstrport (SCM_INUM0, |
1289 | scm_make_string (SCM_INUM0, SCM_UNDEFINED), | |
1290 | SCM_OPN | SCM_WRTNG, | |
1291 | FUNC_NAME); | |
1292 | destination = port; | |
daba1a71 MD |
1293 | } |
1294 | else | |
1295 | { | |
1296 | SCM_VALIDATE_OPORT_VALUE (1, destination); | |
dfd03fb9 | 1297 | port = SCM_COERCE_OUTPORT (destination); |
daba1a71 MD |
1298 | } |
1299 | SCM_VALIDATE_STRING (2, message); | |
af45e3b0 | 1300 | SCM_VALIDATE_REST_ARGUMENT (args); |
70d63753 | 1301 | |
889975e5 MG |
1302 | p = 0; |
1303 | start = 0; | |
1304 | end = scm_i_string_length (message); | |
b24b5e13 | 1305 | for (p = start; p != end; ++p) |
889975e5 | 1306 | if (scm_i_string_ref (message, p) == '~') |
70d63753 | 1307 | { |
b24b5e13 | 1308 | if (++p == end) |
6662998f MV |
1309 | break; |
1310 | ||
889975e5 | 1311 | switch (scm_i_string_ref (message, p)) |
6662998f MV |
1312 | { |
1313 | case 'A': case 'a': | |
1314 | writingp = 0; | |
1315 | break; | |
1316 | case 'S': case 's': | |
1317 | writingp = 1; | |
1318 | break; | |
1319 | case '~': | |
889975e5 | 1320 | scm_lfwrite_substr (message, start, p, port); |
6662998f MV |
1321 | start = p + 1; |
1322 | continue; | |
1323 | case '%': | |
889975e5 | 1324 | scm_lfwrite_substr (message, start, p - 1, port); |
dfd03fb9 | 1325 | scm_newline (port); |
6662998f MV |
1326 | start = p + 1; |
1327 | continue; | |
1328 | default: | |
1afff620 | 1329 | SCM_MISC_ERROR ("FORMAT: Unsupported format option ~~~A - use (ice-9 format) instead", |
889975e5 | 1330 | scm_list_1 (SCM_MAKE_CHAR (scm_i_string_ref (message, p)))); |
6662998f MV |
1331 | |
1332 | } | |
70d63753 | 1333 | |
6662998f | 1334 | |
d2e53ed6 | 1335 | if (!scm_is_pair (args)) |
1afff620 | 1336 | SCM_MISC_ERROR ("FORMAT: Missing argument for ~~~A", |
889975e5 | 1337 | scm_list_1 (SCM_MAKE_CHAR (scm_i_string_ref (message, p)))); |
6662998f | 1338 | |
889975e5 | 1339 | scm_lfwrite_substr (message, start, p - 1, port); |
dfd03fb9 | 1340 | /* we pass destination here */ |
70d63753 GB |
1341 | scm_prin1 (SCM_CAR (args), destination, writingp); |
1342 | args = SCM_CDR (args); | |
1343 | start = p + 1; | |
1344 | } | |
6662998f | 1345 | |
889975e5 | 1346 | scm_lfwrite_substr (message, start, p, port); |
bc36d050 | 1347 | if (!scm_is_eq (args, SCM_EOL)) |
1afff620 KN |
1348 | SCM_MISC_ERROR ("FORMAT: ~A superfluous arguments", |
1349 | scm_list_1 (scm_length (args))); | |
70d63753 GB |
1350 | |
1351 | if (fReturnString) | |
1352 | answer = scm_strport_to_string (destination); | |
1353 | ||
daba1a71 | 1354 | return scm_return_first (answer, message); |
70d63753 GB |
1355 | } |
1356 | #undef FUNC_NAME | |
1357 | ||
1358 | ||
3b3b36dd | 1359 | SCM_DEFINE (scm_newline, "newline", 0, 1, 0, |
b450f070 | 1360 | (SCM port), |
8f85c0c6 NJ |
1361 | "Send a newline to @var{port}.\n" |
1362 | "If @var{port} is omitted, send to the current output port.") | |
1bbd0b84 | 1363 | #define FUNC_NAME s_scm_newline |
0f2d19dd JB |
1364 | { |
1365 | if (SCM_UNBNDP (port)) | |
9de87eea | 1366 | port = scm_current_output_port (); |
3eb7e6ee | 1367 | |
34d19ef6 | 1368 | SCM_VALIDATE_OPORT_VALUE (1, port); |
bb35f315 | 1369 | |
0ef4ae82 | 1370 | scm_putc ('\n', SCM_COERCE_OUTPORT (port)); |
0f2d19dd JB |
1371 | return SCM_UNSPECIFIED; |
1372 | } | |
1bbd0b84 | 1373 | #undef FUNC_NAME |
0f2d19dd | 1374 | |
3b3b36dd | 1375 | SCM_DEFINE (scm_write_char, "write-char", 1, 1, 0, |
b450f070 | 1376 | (SCM chr, SCM port), |
eca65e90 | 1377 | "Send character @var{chr} to @var{port}.") |
1bbd0b84 | 1378 | #define FUNC_NAME s_scm_write_char |
0f2d19dd JB |
1379 | { |
1380 | if (SCM_UNBNDP (port)) | |
9de87eea | 1381 | port = scm_current_output_port (); |
3eb7e6ee | 1382 | |
34d19ef6 HWN |
1383 | SCM_VALIDATE_CHAR (1, chr); |
1384 | SCM_VALIDATE_OPORT_VALUE (2, port); | |
07f49ac7 LC |
1385 | |
1386 | port = SCM_COERCE_OUTPORT (port); | |
1387 | if (!display_character (SCM_CHAR (chr), port, | |
1388 | scm_i_get_conversion_strategy (port))) | |
1389 | scm_encoding_error (__func__, errno, | |
1390 | "cannot convert to output locale", | |
1391 | "UTF-32", scm_i_get_port_encoding (port), | |
1392 | scm_string (scm_list_1 (chr))); | |
1393 | ||
0f2d19dd JB |
1394 | return SCM_UNSPECIFIED; |
1395 | } | |
1bbd0b84 | 1396 | #undef FUNC_NAME |
0f2d19dd | 1397 | |
0f2d19dd JB |
1398 | \f |
1399 | ||
bb35f315 | 1400 | /* Call back to Scheme code to do the printing of special objects |
c19bc088 MD |
1401 | * (like structs). SCM_PRINTER_APPLY applies PROC to EXP and a smob |
1402 | * containing PORT and PSTATE. This object can be used as the port for | |
1403 | * display/write etc to continue the current print chain. The REVEALED | |
1404 | * field of PSTATE is set to true to indicate that the print state has | |
1405 | * escaped to Scheme and thus has to be freed by the GC. | |
1406 | */ | |
1407 | ||
92c2555f | 1408 | scm_t_bits scm_tc16_port_with_ps; |
c19bc088 MD |
1409 | |
1410 | /* Print exactly as the port itself would */ | |
1411 | ||
1412 | static int | |
e841c3e0 | 1413 | port_with_ps_print (SCM obj, SCM port, scm_print_state *pstate) |
c19bc088 MD |
1414 | { |
1415 | obj = SCM_PORT_WITH_PS_PORT (obj); | |
1416 | return scm_ptobs[SCM_PTOBNUM (obj)].print (obj, port, pstate); | |
1417 | } | |
c4f37e80 MV |
1418 | |
1419 | SCM | |
1bbd0b84 | 1420 | scm_printer_apply (SCM proc, SCM exp, SCM port, scm_print_state *pstate) |
c4f37e80 | 1421 | { |
bb35f315 | 1422 | pstate->revealed = 1; |
dfd03fb9 MD |
1423 | return scm_call_2 (proc, exp, |
1424 | scm_i_port_with_print_state (port, pstate->handle)); | |
c19bc088 MD |
1425 | } |
1426 | ||
dfd03fb9 | 1427 | SCM_DEFINE (scm_port_with_print_state, "port-with-print-state", 1, 1, 0, |
1bbd0b84 | 1428 | (SCM port, SCM pstate), |
71331188 | 1429 | "Create a new port which behaves like @var{port}, but with an\n" |
dfd03fb9 MD |
1430 | "included print state @var{pstate}. @var{pstate} is optional.\n" |
1431 | "If @var{pstate} isn't supplied and @var{port} already has\n" | |
1432 | "a print state, the old print state is reused.") | |
1bbd0b84 | 1433 | #define FUNC_NAME s_scm_port_with_print_state |
c19bc088 | 1434 | { |
34d19ef6 | 1435 | SCM_VALIDATE_OPORT_VALUE (1, port); |
dfd03fb9 MD |
1436 | if (!SCM_UNBNDP (pstate)) |
1437 | SCM_VALIDATE_PRINTSTATE (2, pstate); | |
1438 | return scm_i_port_with_print_state (port, pstate); | |
c19bc088 | 1439 | } |
1bbd0b84 | 1440 | #undef FUNC_NAME |
c19bc088 | 1441 | |
a1ec6916 | 1442 | SCM_DEFINE (scm_get_print_state, "get-print-state", 1, 0, 0, |
1bbd0b84 | 1443 | (SCM port), |
71331188 MG |
1444 | "Return the print state of the port @var{port}. If @var{port}\n" |
1445 | "has no associated print state, @code{#f} is returned.") | |
1bbd0b84 | 1446 | #define FUNC_NAME s_scm_get_print_state |
c19bc088 | 1447 | { |
368cf54d GB |
1448 | if (SCM_PORT_WITH_PS_P (port)) |
1449 | return SCM_PORT_WITH_PS_PS (port); | |
f5f2dcff | 1450 | if (SCM_OUTPUT_PORT_P (port)) |
368cf54d | 1451 | return SCM_BOOL_F; |
276dd677 | 1452 | SCM_WRONG_TYPE_ARG (1, port); |
c4f37e80 | 1453 | } |
1bbd0b84 | 1454 | #undef FUNC_NAME |
bb35f315 | 1455 | |
c4f37e80 | 1456 | \f |
1cc91f1b | 1457 | |
0f2d19dd JB |
1458 | void |
1459 | scm_init_print () | |
0f2d19dd | 1460 | { |
c19bc088 | 1461 | SCM vtable, layout, type; |
d5cf5324 | 1462 | |
62560650 | 1463 | scm_init_opts (scm_print_options, scm_print_opts); |
d5cf5324 | 1464 | |
4a655e50 | 1465 | scm_print_options (scm_list_4 (scm_from_latin1_symbol ("highlight-prefix"), |
81ae25da | 1466 | scm_from_locale_string ("{"), |
4a655e50 | 1467 | scm_from_latin1_symbol ("highlight-suffix"), |
81ae25da MV |
1468 | scm_from_locale_string ("}"))); |
1469 | ||
d5cf5324 DH |
1470 | scm_gc_register_root (&print_state_pool); |
1471 | scm_gc_register_root (&scm_print_state_vtable); | |
3ce4544c | 1472 | vtable = scm_make_vtable_vtable (scm_nullstr, SCM_INUM0, SCM_EOL); |
cc95e00a MV |
1473 | layout = |
1474 | scm_make_struct_layout (scm_from_locale_string (SCM_PRINT_STATE_LAYOUT)); | |
1afff620 | 1475 | type = scm_make_struct (vtable, SCM_INUM0, scm_list_1 (layout)); |
4a655e50 | 1476 | scm_set_struct_vtable_name_x (type, scm_from_latin1_symbol ("print-state")); |
bb35f315 | 1477 | scm_print_state_vtable = type; |
c4f37e80 | 1478 | |
c19bc088 MD |
1479 | /* Don't want to bind a wrapper class in GOOPS, so pass 0 as arg1. */ |
1480 | scm_tc16_port_with_ps = scm_make_smob_type (0, 0); | |
e841c3e0 | 1481 | scm_set_smob_print (scm_tc16_port_with_ps, port_with_ps_print); |
81ae25da | 1482 | |
a0599745 | 1483 | #include "libguile/print.x" |
475fa9a5 MV |
1484 | |
1485 | scm_print_opts[SCM_PRINT_KEYWORD_STYLE_I].val = SCM_UNPACK (sym_reader); | |
0f2d19dd | 1486 | } |
89e00824 ML |
1487 | |
1488 | /* | |
1489 | Local Variables: | |
1490 | c-file-style: "gnu" | |
1491 | End: | |
1492 | */ |