Commit | Line | Data |
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e2c2a699 | 1 | /* Copyright (C) 1995-1999,2000,2001, 2002, 2003, 2004, 2006, 2008, 2009, 2010 Free Software Foundation, Inc. |
0f2d19dd | 2 | * |
73be1d9e | 3 | * This library is free software; you can redistribute it and/or |
53befeb7 NJ |
4 | * modify it under the terms of the GNU Lesser General Public License |
5 | * as published by the Free Software Foundation; either version 3 of | |
6 | * the License, or (at your option) any later version. | |
0f2d19dd | 7 | * |
53befeb7 NJ |
8 | * This library is distributed in the hope that it will be useful, but |
9 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
73be1d9e MV |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
11 | * Lesser General Public License for more details. | |
0f2d19dd | 12 | * |
73be1d9e MV |
13 | * You should have received a copy of the GNU Lesser General Public |
14 | * License along with this library; if not, write to the Free Software | |
53befeb7 NJ |
15 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
16 | * 02110-1301 USA | |
73be1d9e | 17 | */ |
1bbd0b84 | 18 | |
1bbd0b84 | 19 | |
0f2d19dd | 20 | \f |
dbb605f5 LC |
21 | #ifdef HAVE_CONFIG_H |
22 | # include <config.h> | |
23 | #endif | |
0f2d19dd | 24 | |
e6e2e95a | 25 | #include <errno.h> |
eca29b02 | 26 | #include <uniconv.h> |
904a78f1 | 27 | #include <unictype.h> |
e6e2e95a | 28 | |
a0599745 MD |
29 | #include "libguile/_scm.h" |
30 | #include "libguile/chars.h" | |
a002f1a2 | 31 | #include "libguile/continuations.h" |
a0599745 MD |
32 | #include "libguile/smob.h" |
33 | #include "libguile/eval.h" | |
34 | #include "libguile/macros.h" | |
35 | #include "libguile/procprop.h" | |
36 | #include "libguile/read.h" | |
37 | #include "libguile/weaks.h" | |
2fb924f6 | 38 | #include "libguile/programs.h" |
a0599745 MD |
39 | #include "libguile/alist.h" |
40 | #include "libguile/struct.h" | |
a0599745 MD |
41 | #include "libguile/ports.h" |
42 | #include "libguile/root.h" | |
43 | #include "libguile/strings.h" | |
44 | #include "libguile/strports.h" | |
45 | #include "libguile/vectors.h" | |
c96d76b8 | 46 | #include "libguile/lang.h" |
327967ef | 47 | #include "libguile/numbers.h" |
a0599745 MD |
48 | |
49 | #include "libguile/validate.h" | |
50 | #include "libguile/print.h" | |
22fc179a HWN |
51 | |
52 | #include "libguile/private-options.h" | |
53 | ||
0f2d19dd JB |
54 | \f |
55 | ||
56 | /* {Names of immediate symbols} | |
57 | * | |
58 | * This table must agree with the declarations in scm.h: {Immediate Symbols}. | |
59 | */ | |
60 | ||
e17d318f DH |
61 | /* This table must agree with the list of flags in tags.h. */ |
62 | static const char *iflagnames[] = | |
63 | { | |
64 | "#f", | |
45f4cbdf MW |
65 | "#nil", /* Elisp nil value. Should print from elisp as symbol `nil'. */ |
66 | "#<XXX UNUSED LISP FALSE -- DO NOT USE -- SHOULD NEVER BE SEEN XXX>", | |
67 | "()", | |
e17d318f | 68 | "#t", |
45f4cbdf MW |
69 | "#<XXX UNUSED BOOLEAN -- DO NOT USE -- SHOULD NEVER BE SEEN XXX>", |
70 | "#<unspecified>", | |
e17d318f DH |
71 | "#<undefined>", |
72 | "#<eof>", | |
e17d318f DH |
73 | |
74 | /* Unbound slot marker for GOOPS. For internal use in GOOPS only. */ | |
75 | "#<unbound>", | |
e17d318f DH |
76 | }; |
77 | ||
475fa9a5 MV |
78 | SCM_SYMBOL (sym_reader, "reader"); |
79 | ||
92c2555f | 80 | scm_t_option scm_print_opts[] = { |
62316c7f | 81 | { SCM_OPTION_SCM, "closure-hook", (unsigned long) SCM_BOOL_F, |
726d810a | 82 | "Hook for printing closures (should handle macros as well)." }, |
84f6a34a | 83 | { SCM_OPTION_BOOLEAN, "source", 0, |
81ae25da MV |
84 | "Print closures with source." }, |
85 | { SCM_OPTION_SCM, "highlight-prefix", (unsigned long)SCM_BOOL_F, | |
86 | "The string to print before highlighted values." }, | |
87 | { SCM_OPTION_SCM, "highlight-suffix", (unsigned long)SCM_BOOL_F, | |
475fa9a5 MV |
88 | "The string to print after highlighted values." }, |
89 | { SCM_OPTION_SCM, "quote-keywordish-symbols", (unsigned long)SCM_BOOL_F, | |
90 | "How to print symbols that have a colon as their first or last character. " | |
91 | "The value '#f' does not quote the colons; '#t' quotes them; " | |
92 | "'reader' quotes them when the reader option 'keywords' is not '#f'." | |
62560650 HWN |
93 | }, |
94 | { 0 }, | |
e6e4c9af MD |
95 | }; |
96 | ||
a1ec6916 | 97 | SCM_DEFINE (scm_print_options, "print-options-interface", 0, 1, 0, |
1bbd0b84 | 98 | (SCM setting), |
71331188 | 99 | "Option interface for the print options. Instead of using\n" |
1dd05fd8 MG |
100 | "this procedure directly, use the procedures\n" |
101 | "@code{print-enable}, @code{print-disable}, @code{print-set!}\n" | |
102 | "and @code{print-options}.") | |
1bbd0b84 | 103 | #define FUNC_NAME s_scm_print_options |
e6e4c9af | 104 | { |
a51ea417 | 105 | SCM ans = scm_options (setting, |
b7ff98dd | 106 | scm_print_opts, |
1bbd0b84 | 107 | FUNC_NAME); |
e6e4c9af MD |
108 | return ans; |
109 | } | |
1bbd0b84 | 110 | #undef FUNC_NAME |
e6e4c9af | 111 | |
0f2d19dd JB |
112 | \f |
113 | /* {Printing of Scheme Objects} | |
114 | */ | |
115 | ||
a51ea417 | 116 | /* Detection of circular references. |
c62fbfe1 MD |
117 | * |
118 | * Due to other constraints in the implementation, this code has bad | |
5d46ebe3 MD |
119 | * time complexity (O (depth * N)), The printer code can be |
120 | * rewritten to be O(N). | |
a51ea417 | 121 | */ |
dbb5de29 NJ |
122 | #define PUSH_REF(pstate, obj) \ |
123 | do \ | |
124 | { \ | |
125 | PSTATE_STACK_SET (pstate, pstate->top, obj); \ | |
126 | pstate->top++; \ | |
127 | if (pstate->top == pstate->ceiling) \ | |
128 | grow_ref_stack (pstate); \ | |
1bbd0b84 | 129 | } while(0) |
a51ea417 | 130 | |
dbb5de29 NJ |
131 | #define ENTER_NESTED_DATA(pstate, obj, label) \ |
132 | do \ | |
133 | { \ | |
134 | register unsigned long i; \ | |
135 | for (i = 0; i < pstate->top; ++i) \ | |
136 | if (scm_is_eq (PSTATE_STACK_REF (pstate, i), (obj))) \ | |
137 | goto label; \ | |
138 | if (pstate->fancyp) \ | |
139 | { \ | |
140 | if (pstate->top - pstate->list_offset >= pstate->level) \ | |
141 | { \ | |
142 | scm_putc ('#', port); \ | |
143 | return; \ | |
144 | } \ | |
145 | } \ | |
146 | PUSH_REF(pstate, obj); \ | |
1bbd0b84 | 147 | } while(0) |
a51ea417 | 148 | |
dbb5de29 NJ |
149 | #define EXIT_NESTED_DATA(pstate) \ |
150 | do \ | |
151 | { \ | |
152 | --pstate->top; \ | |
153 | PSTATE_STACK_SET (pstate, pstate->top, SCM_UNDEFINED); \ | |
154 | } \ | |
155 | while (0) | |
c62fbfe1 | 156 | |
d5cf5324 DH |
157 | SCM scm_print_state_vtable = SCM_BOOL_F; |
158 | static SCM print_state_pool = SCM_EOL; | |
9de87eea | 159 | scm_i_pthread_mutex_t print_state_mutex = SCM_I_PTHREAD_MUTEX_INITIALIZER; |
c4f37e80 | 160 | |
f843a84c | 161 | #ifdef GUILE_DEBUG /* Used for debugging purposes */ |
1cc91f1b | 162 | |
3b3b36dd | 163 | SCM_DEFINE (scm_current_pstate, "current-pstate", 0, 0, 0, |
1bbd0b84 | 164 | (), |
d5cf5324 | 165 | "Return the current-pstate -- the car of the\n" |
5352393c MG |
166 | "@code{print_state_pool}. @code{current-pstate} is only\n" |
167 | "included in @code{--enable-guile-debug} builds.") | |
1bbd0b84 | 168 | #define FUNC_NAME s_scm_current_pstate |
c62fbfe1 | 169 | { |
d2e53ed6 | 170 | if (!scm_is_null (print_state_pool)) |
d5cf5324 | 171 | return SCM_CAR (print_state_pool); |
a0adfbf0 | 172 | else |
0a284a4e | 173 | return SCM_BOOL_F; |
c62fbfe1 | 174 | } |
1bbd0b84 GB |
175 | #undef FUNC_NAME |
176 | ||
c62fbfe1 MD |
177 | #endif |
178 | ||
179 | #define PSTATE_SIZE 50L | |
180 | ||
698c0295 | 181 | static SCM |
1bbd0b84 | 182 | make_print_state (void) |
698c0295 | 183 | { |
d5cf5324 DH |
184 | SCM print_state |
185 | = scm_make_struct (scm_print_state_vtable, SCM_INUM0, SCM_EOL); | |
bf685b6d | 186 | scm_print_state *pstate = SCM_PRINT_STATE (print_state); |
00ffa0e7 | 187 | pstate->ref_vect = scm_c_make_vector (PSTATE_SIZE, SCM_UNDEFINED); |
4057a3e0 | 188 | pstate->ceiling = SCM_SIMPLE_VECTOR_LENGTH (pstate->ref_vect); |
d232520a | 189 | pstate->highlight_objects = SCM_EOL; |
698c0295 MD |
190 | return print_state; |
191 | } | |
1cc91f1b | 192 | |
c62fbfe1 MD |
193 | SCM |
194 | scm_make_print_state () | |
c62fbfe1 | 195 | { |
230d095f | 196 | SCM answer = SCM_BOOL_F; |
698c0295 MD |
197 | |
198 | /* First try to allocate a print state from the pool */ | |
9de87eea | 199 | scm_i_pthread_mutex_lock (&print_state_mutex); |
d2e53ed6 | 200 | if (!scm_is_null (print_state_pool)) |
698c0295 | 201 | { |
d5cf5324 DH |
202 | answer = SCM_CAR (print_state_pool); |
203 | print_state_pool = SCM_CDR (print_state_pool); | |
698c0295 | 204 | } |
9de87eea | 205 | scm_i_pthread_mutex_unlock (&print_state_mutex); |
698c0295 | 206 | |
7888309b | 207 | return scm_is_false (answer) ? make_print_state () : answer; |
c62fbfe1 | 208 | } |
a51ea417 | 209 | |
698c0295 | 210 | void |
6e8d25a6 | 211 | scm_free_print_state (SCM print_state) |
698c0295 MD |
212 | { |
213 | SCM handle; | |
214 | scm_print_state *pstate = SCM_PRINT_STATE (print_state); | |
215 | /* Cleanup before returning print state to pool. | |
216 | * It is better to do it here. Doing it in scm_prin1 | |
217 | * would cost more since that function is called much more | |
218 | * often. | |
219 | */ | |
220 | pstate->fancyp = 0; | |
bb35f315 | 221 | pstate->revealed = 0; |
d232520a | 222 | pstate->highlight_objects = SCM_EOL; |
9de87eea | 223 | scm_i_pthread_mutex_lock (&print_state_mutex); |
16d4699b | 224 | handle = scm_cons (print_state, print_state_pool); |
d5cf5324 | 225 | print_state_pool = handle; |
9de87eea | 226 | scm_i_pthread_mutex_unlock (&print_state_mutex); |
dfd03fb9 MD |
227 | } |
228 | ||
229 | SCM | |
230 | scm_i_port_with_print_state (SCM port, SCM print_state) | |
231 | { | |
232 | if (SCM_UNBNDP (print_state)) | |
233 | { | |
234 | if (SCM_PORT_WITH_PS_P (port)) | |
235 | return port; | |
236 | else | |
237 | print_state = scm_make_print_state (); | |
238 | /* port does not need to be coerced since it doesn't have ps */ | |
239 | } | |
240 | else | |
241 | port = SCM_COERCE_OUTPORT (port); | |
242 | SCM_RETURN_NEWSMOB (scm_tc16_port_with_ps, | |
243 | SCM_UNPACK (scm_cons (port, print_state))); | |
698c0295 | 244 | } |
1cc91f1b | 245 | |
a51ea417 | 246 | static void |
1bbd0b84 | 247 | grow_ref_stack (scm_print_state *pstate) |
a51ea417 | 248 | { |
4057a3e0 MV |
249 | SCM old_vect = pstate->ref_vect; |
250 | size_t old_size = SCM_SIMPLE_VECTOR_LENGTH (old_vect); | |
251 | size_t new_size = 2 * pstate->ceiling; | |
00ffa0e7 | 252 | SCM new_vect = scm_c_make_vector (new_size, SCM_UNDEFINED); |
b17004b8 DH |
253 | unsigned long int i; |
254 | ||
255 | for (i = 0; i != old_size; ++i) | |
4057a3e0 | 256 | SCM_SIMPLE_VECTOR_SET (new_vect, i, SCM_SIMPLE_VECTOR_REF (old_vect, i)); |
b17004b8 DH |
257 | |
258 | pstate->ref_vect = new_vect; | |
bf685b6d | 259 | pstate->ceiling = new_size; |
a51ea417 MD |
260 | } |
261 | ||
509759dd MV |
262 | #define PSTATE_STACK_REF(p,i) SCM_SIMPLE_VECTOR_REF((p)->ref_vect, (i)) |
263 | #define PSTATE_STACK_SET(p,i,v) SCM_SIMPLE_VECTOR_SET((p)->ref_vect, (i), (v)) | |
1cc91f1b | 264 | |
a51ea417 | 265 | static void |
34d19ef6 | 266 | print_circref (SCM port, scm_print_state *pstate, SCM ref) |
a51ea417 | 267 | { |
c014a02e ML |
268 | register long i; |
269 | long self = pstate->top - 1; | |
c62fbfe1 | 270 | i = pstate->top - 1; |
509759dd | 271 | if (scm_is_pair (PSTATE_STACK_REF (pstate, i))) |
c62fbfe1 MD |
272 | { |
273 | while (i > 0) | |
274 | { | |
509759dd MV |
275 | if (!scm_is_pair (PSTATE_STACK_REF (pstate, i-1)) |
276 | || !scm_is_eq (SCM_CDR (PSTATE_STACK_REF (pstate, i-1)), | |
277 | SCM_CDR (PSTATE_STACK_REF (pstate, i)))) | |
c62fbfe1 MD |
278 | break; |
279 | --i; | |
280 | } | |
281 | self = i; | |
282 | } | |
283 | for (i = pstate->top - 1; 1; --i) | |
509759dd | 284 | if (scm_is_eq (PSTATE_STACK_REF(pstate, i), ref)) |
c62fbfe1 | 285 | break; |
b7f3516f | 286 | scm_putc ('#', port); |
c62fbfe1 | 287 | scm_intprint (i - self, 10, port); |
b7f3516f | 288 | scm_putc ('#', port); |
a51ea417 MD |
289 | } |
290 | ||
6662998f MV |
291 | /* Print the name of a symbol. */ |
292 | ||
475fa9a5 | 293 | static int |
e23106d5 | 294 | quote_keywordish_symbol (SCM symbol) |
475fa9a5 MV |
295 | { |
296 | SCM option; | |
297 | ||
e23106d5 MG |
298 | if (scm_i_symbol_ref (symbol, 0) != ':' |
299 | && scm_i_symbol_ref (symbol, scm_i_symbol_length (symbol) - 1) != ':') | |
475fa9a5 MV |
300 | return 0; |
301 | ||
302 | option = SCM_PRINT_KEYWORD_STYLE; | |
303 | if (scm_is_false (option)) | |
304 | return 0; | |
305 | if (scm_is_eq (option, sym_reader)) | |
306 | return scm_is_true (SCM_PACK (SCM_KEYWORD_STYLE)); | |
307 | return 1; | |
308 | } | |
309 | ||
6662998f | 310 | void |
e23106d5 | 311 | scm_i_print_symbol_name (SCM str, SCM port) |
6662998f | 312 | { |
c6b49e89 MV |
313 | /* This points to the first character that has not yet been written to the |
314 | * port. */ | |
315 | size_t pos = 0; | |
316 | /* This points to the character we're currently looking at. */ | |
6662998f | 317 | size_t end; |
c6b49e89 MV |
318 | /* If the name contains weird characters, we'll escape them with |
319 | * backslashes and set this flag; it indicates that we should surround the | |
320 | * name with "#{" and "}#". */ | |
321 | int weird = 0; | |
322 | /* Backslashes are not sufficient to make a name weird, but if a name is | |
323 | * weird because of other characters, backslahes need to be escaped too. | |
324 | * The first time we see a backslash, we set maybe_weird, and mw_pos points | |
325 | * to the backslash. Then if the name turns out to be weird, we re-process | |
327967ef MV |
326 | * everything starting from mw_pos. |
327 | * We could instead make backslashes always weird. This is not necessary | |
328 | * to ensure that the output is (read)-able, but it would make this code | |
329 | * simpler and faster. */ | |
c6b49e89 | 330 | int maybe_weird = 0; |
6662998f | 331 | size_t mw_pos = 0; |
e23106d5 MG |
332 | size_t len = scm_i_symbol_length (str); |
333 | scm_t_wchar str0 = scm_i_symbol_ref (str, 0); | |
6662998f | 334 | |
e23106d5 MG |
335 | if (len == 0 || str0 == '\'' || str0 == '`' || str0 == ',' |
336 | || quote_keywordish_symbol (str) | |
337 | || (str0 == '.' && len == 1) | |
338 | || scm_is_true (scm_i_string_to_number (scm_symbol_to_string (str), 10))) | |
6662998f MV |
339 | { |
340 | scm_lfwrite ("#{", 2, port); | |
341 | weird = 1; | |
342 | } | |
c6b49e89 | 343 | |
6662998f | 344 | for (end = pos; end < len; ++end) |
e23106d5 | 345 | switch (scm_i_symbol_ref (str, end)) |
6662998f MV |
346 | { |
347 | #ifdef BRACKETS_AS_PARENS | |
348 | case '[': | |
349 | case ']': | |
350 | #endif | |
351 | case '(': | |
352 | case ')': | |
353 | case '"': | |
354 | case ';': | |
c6b49e89 | 355 | case '#': |
6662998f MV |
356 | case SCM_WHITE_SPACES: |
357 | case SCM_LINE_INCREMENTORS: | |
358 | weird_handler: | |
359 | if (maybe_weird) | |
360 | { | |
361 | end = mw_pos; | |
362 | maybe_weird = 0; | |
363 | } | |
364 | if (!weird) | |
365 | { | |
366 | scm_lfwrite ("#{", 2, port); | |
367 | weird = 1; | |
368 | } | |
369 | if (pos < end) | |
e23106d5 | 370 | scm_lfwrite_substr (scm_symbol_to_string (str), pos, end, port); |
6662998f MV |
371 | { |
372 | char buf[2]; | |
373 | buf[0] = '\\'; | |
e23106d5 | 374 | buf[1] = (char) (unsigned char) scm_i_symbol_ref (str, end); |
6662998f MV |
375 | scm_lfwrite (buf, 2, port); |
376 | } | |
377 | pos = end + 1; | |
378 | break; | |
379 | case '\\': | |
380 | if (weird) | |
381 | goto weird_handler; | |
382 | if (!maybe_weird) | |
383 | { | |
384 | maybe_weird = 1; | |
385 | mw_pos = pos; | |
386 | } | |
387 | break; | |
6662998f MV |
388 | default: |
389 | break; | |
390 | } | |
391 | if (pos < end) | |
e23106d5 | 392 | scm_lfwrite_substr (scm_symbol_to_string (str), pos, end, port); |
6662998f MV |
393 | if (weird) |
394 | scm_lfwrite ("}#", 2, port); | |
395 | } | |
396 | ||
e23106d5 MG |
397 | void |
398 | scm_print_symbol_name (const char *str, size_t len, SCM port) | |
399 | { | |
400 | SCM symbol = scm_from_locale_symboln (str, len); | |
ab33782c | 401 | scm_i_print_symbol_name (symbol, port); |
e23106d5 MG |
402 | } |
403 | ||
c62fbfe1 | 404 | /* Print generally. Handles both write and display according to PSTATE. |
0f2d19dd | 405 | */ |
8b840115 MD |
406 | SCM_GPROC(s_write, "write", 1, 1, 0, scm_write, g_write); |
407 | SCM_GPROC(s_display, "display", 1, 1, 0, scm_display, g_display); | |
1cc91f1b | 408 | |
d232520a MV |
409 | static void iprin1 (SCM exp, SCM port, scm_print_state *pstate); |
410 | ||
0f2d19dd | 411 | void |
1bbd0b84 | 412 | scm_iprin1 (SCM exp, SCM port, scm_print_state *pstate) |
d232520a MV |
413 | { |
414 | if (pstate->fancyp | |
415 | && scm_is_true (scm_memq (exp, pstate->highlight_objects))) | |
416 | { | |
81ae25da | 417 | scm_display (SCM_PRINT_HIGHLIGHT_PREFIX, port); |
d232520a | 418 | iprin1 (exp, port, pstate); |
81ae25da | 419 | scm_display (SCM_PRINT_HIGHLIGHT_SUFFIX, port); |
d232520a MV |
420 | } |
421 | else | |
422 | iprin1 (exp, port, pstate); | |
423 | } | |
424 | ||
425 | static void | |
426 | iprin1 (SCM exp, SCM port, scm_print_state *pstate) | |
0f2d19dd | 427 | { |
54778cd3 | 428 | switch (SCM_ITAG3 (exp)) |
0f2d19dd | 429 | { |
e34f941a DH |
430 | case scm_tc3_tc7_1: |
431 | case scm_tc3_tc7_2: | |
432 | /* These tc3 tags should never occur in an immediate value. They are | |
433 | * only used in cell types of non-immediates, i. e. the value returned | |
434 | * by SCM_CELL_TYPE (exp) can use these tags. | |
435 | */ | |
436 | scm_ipruk ("immediate", exp, port); | |
437 | break; | |
438 | case scm_tc3_int_1: | |
439 | case scm_tc3_int_2: | |
e11e83f3 | 440 | scm_intprint (SCM_I_INUM (exp), 10, port); |
0f2d19dd | 441 | break; |
e34f941a | 442 | case scm_tc3_imm24: |
7866a09b | 443 | if (SCM_CHARP (exp)) |
0f2d19dd | 444 | { |
904a78f1 | 445 | scm_t_wchar i = SCM_CHAR (exp); |
77332b21 | 446 | const char *name; |
5ca6dc39 | 447 | |
b7f3516f TT |
448 | if (SCM_WRITINGP (pstate)) |
449 | { | |
450 | scm_puts ("#\\", port); | |
77332b21 MG |
451 | name = scm_i_charname (exp); |
452 | if (name != NULL) | |
453 | scm_puts (name, port); | |
904a78f1 MG |
454 | else if (uc_is_general_category_withtable (i, UC_CATEGORY_MASK_L |
455 | | UC_CATEGORY_MASK_M | |
456 | | UC_CATEGORY_MASK_N | |
457 | | UC_CATEGORY_MASK_P | |
458 | | UC_CATEGORY_MASK_S)) | |
459 | /* Print the character if is graphic character. */ | |
460 | { | |
889975e5 | 461 | scm_t_wchar *wbuf; |
0dcd7e61 | 462 | SCM wstr; |
889975e5 MG |
463 | char *buf; |
464 | size_t len; | |
465 | const char *enc; | |
466 | ||
467 | enc = scm_i_get_port_encoding (port); | |
0dcd7e61 MG |
468 | if (uc_combining_class (i) == UC_CCC_NR) |
469 | { | |
470 | wstr = scm_i_make_wide_string (1, &wbuf); | |
471 | wbuf[0] = i; | |
472 | } | |
473 | else | |
474 | { | |
475 | /* Character is a combining character: print it connected | |
476 | to a dotted circle instead of connecting it to the | |
477 | backslash in '#\' */ | |
478 | wstr = scm_i_make_wide_string (2, &wbuf); | |
479 | wbuf[0] = SCM_CODEPOINT_DOTTED_CIRCLE; | |
480 | wbuf[1] = i; | |
481 | } | |
930ddd34 | 482 | if (enc == NULL) |
889975e5 | 483 | { |
930ddd34 MG |
484 | if (i <= 0xFF) |
485 | /* Character is graphic and Latin-1. Print it */ | |
486 | scm_lfwrite_str (wstr, port); | |
487 | else | |
488 | /* Character is graphic but unrepresentable in | |
489 | this port's encoding. */ | |
490 | scm_intprint (i, 8, port); | |
889975e5 | 491 | } |
904a78f1 | 492 | else |
889975e5 MG |
493 | { |
494 | buf = u32_conv_to_encoding (enc, | |
495 | iconveh_error, | |
496 | (scm_t_uint32 *) wbuf, | |
497 | 1, | |
498 | NULL, | |
499 | NULL, &len); | |
500 | if (buf != NULL) | |
501 | { | |
502 | /* Character is graphic. Print it. */ | |
503 | scm_lfwrite_str (wstr, port); | |
504 | free (buf); | |
505 | } | |
506 | else | |
507 | /* Character is graphic but unrepresentable in | |
508 | this port's encoding. */ | |
509 | scm_intprint (i, 8, port); | |
510 | } | |
904a78f1 MG |
511 | } |
512 | else | |
f7118e35 MG |
513 | /* Character is a non-graphical character. */ |
514 | scm_intprint (i, 8, port); | |
b7f3516f TT |
515 | } |
516 | else | |
889975e5 | 517 | scm_i_charprint (i, port); |
0f2d19dd | 518 | } |
a51ea417 | 519 | else if (SCM_IFLAGP (exp) |
e17d318f DH |
520 | && ((size_t) SCM_IFLAGNUM (exp) < (sizeof iflagnames / sizeof (char *)))) |
521 | { | |
522 | scm_puts (iflagnames [SCM_IFLAGNUM (exp)], port); | |
523 | } | |
0f2d19dd | 524 | else |
e34f941a DH |
525 | { |
526 | /* unknown immediate value */ | |
527 | scm_ipruk ("immediate", exp, port); | |
528 | } | |
0f2d19dd | 529 | break; |
e34f941a | 530 | case scm_tc3_cons: |
0f2d19dd JB |
531 | switch (SCM_TYP7 (exp)) |
532 | { | |
904a077d MV |
533 | case scm_tcs_struct: |
534 | { | |
535 | ENTER_NESTED_DATA (pstate, exp, circref); | |
536 | if (SCM_OBJ_CLASS_FLAGS (exp) & SCM_CLASSF_GOOPS) | |
537 | { | |
538 | SCM pwps, print = pstate->writingp ? g_write : g_display; | |
539 | if (!print) | |
540 | goto print_struct; | |
dfd03fb9 | 541 | pwps = scm_i_port_with_print_state (port, pstate->handle); |
7663c008 | 542 | pstate->revealed = 1; |
904a077d MV |
543 | scm_call_generic_2 (print, exp, pwps); |
544 | } | |
545 | else | |
546 | { | |
547 | print_struct: | |
548 | scm_print_struct (exp, port, pstate); | |
549 | } | |
550 | EXIT_NESTED_DATA (pstate); | |
551 | } | |
552 | break; | |
0f2d19dd JB |
553 | case scm_tcs_cons_imcar: |
554 | case scm_tcs_cons_nimcar: | |
c62fbfe1 MD |
555 | ENTER_NESTED_DATA (pstate, exp, circref); |
556 | scm_iprlist ("(", exp, ')', port, pstate); | |
557 | EXIT_NESTED_DATA (pstate); | |
a51ea417 MD |
558 | break; |
559 | circref: | |
c62fbfe1 | 560 | print_circref (port, pstate, exp); |
0f2d19dd | 561 | break; |
534c55a9 DH |
562 | case scm_tc7_number: |
563 | switch SCM_TYP16 (exp) { | |
564 | case scm_tc16_big: | |
565 | scm_bigprint (exp, port, pstate); | |
566 | break; | |
567 | case scm_tc16_real: | |
568 | scm_print_real (exp, port, pstate); | |
569 | break; | |
570 | case scm_tc16_complex: | |
571 | scm_print_complex (exp, port, pstate); | |
572 | break; | |
f92e85f7 MV |
573 | case scm_tc16_fraction: |
574 | scm_i_print_fraction (exp, port, pstate); | |
575 | break; | |
534c55a9 DH |
576 | } |
577 | break; | |
9c44cd45 MG |
578 | case scm_tc7_string: |
579 | if (SCM_WRITINGP (pstate)) | |
580 | { | |
581 | size_t i, j, len; | |
582 | static char const hex[] = "0123456789abcdef"; | |
583 | char buf[8]; | |
5ca6dc39 | 584 | |
9c44cd45 MG |
585 | |
586 | scm_putc ('"', port); | |
587 | len = scm_i_string_length (exp); | |
588 | for (i = 0; i < len; ++i) | |
589 | { | |
590 | scm_t_wchar ch = scm_i_string_ref (exp, i); | |
591 | int printed = 0; | |
592 | ||
593 | if (ch == ' ' || ch == '\n') | |
594 | { | |
595 | scm_putc (ch, port); | |
596 | printed = 1; | |
597 | } | |
598 | else if (ch == '"' || ch == '\\') | |
599 | { | |
600 | scm_putc ('\\', port); | |
32be5735 | 601 | scm_i_charprint (ch, port); |
9c44cd45 MG |
602 | printed = 1; |
603 | } | |
604 | else | |
605 | if (uc_is_general_category_withtable | |
606 | (ch, | |
607 | UC_CATEGORY_MASK_L | UC_CATEGORY_MASK_M | | |
608 | UC_CATEGORY_MASK_N | UC_CATEGORY_MASK_P | | |
609 | UC_CATEGORY_MASK_S)) | |
610 | { | |
611 | /* Print the character since it is a graphic | |
612 | character. */ | |
613 | scm_t_wchar *wbuf; | |
614 | SCM wstr = scm_i_make_wide_string (1, &wbuf); | |
615 | char *buf; | |
616 | size_t len; | |
889975e5 MG |
617 | |
618 | if (scm_i_get_port_encoding (port)) | |
9c44cd45 | 619 | { |
889975e5 MG |
620 | wstr = scm_i_make_wide_string (1, &wbuf); |
621 | wbuf[0] = ch; | |
622 | buf = u32_conv_to_encoding (scm_i_get_port_encoding (port), | |
623 | iconveh_error, | |
624 | (scm_t_uint32 *) wbuf, | |
625 | 1 , | |
626 | NULL, | |
627 | NULL, &len); | |
628 | if (buf != NULL) | |
629 | { | |
630 | /* Character is graphic and representable in | |
631 | this encoding. Print it. */ | |
632 | scm_lfwrite_str (wstr, port); | |
633 | free (buf); | |
634 | printed = 1; | |
635 | } | |
9c44cd45 | 636 | } |
889975e5 MG |
637 | else |
638 | if (ch <= 0xFF) | |
639 | { | |
640 | scm_putc (ch, port); | |
641 | printed = 1; | |
642 | } | |
9c44cd45 MG |
643 | } |
644 | ||
645 | if (!printed) | |
646 | { | |
647 | /* Character is graphic but unrepresentable in | |
648 | this port's encoding or is not graphic. */ | |
649 | if (ch <= 0xFF) | |
650 | { | |
651 | buf[0] = '\\'; | |
652 | buf[1] = 'x'; | |
653 | buf[2] = hex[ch / 16]; | |
654 | buf[3] = hex[ch % 16]; | |
655 | scm_lfwrite (buf, 4, port); | |
656 | } | |
657 | else if (ch <= 0xFFFF) | |
658 | { | |
659 | buf[0] = '\\'; | |
660 | buf[1] = 'u'; | |
661 | buf[2] = hex[(ch & 0xF000) >> 12]; | |
662 | buf[3] = hex[(ch & 0xF00) >> 8]; | |
663 | buf[4] = hex[(ch & 0xF0) >> 4]; | |
664 | buf[5] = hex[(ch & 0xF)]; | |
665 | scm_lfwrite (buf, 6, port); | |
666 | j = i + 1; | |
667 | } | |
668 | else if (ch > 0xFFFF) | |
669 | { | |
670 | buf[0] = '\\'; | |
671 | buf[1] = 'U'; | |
672 | buf[2] = hex[(ch & 0xF00000) >> 20]; | |
673 | buf[3] = hex[(ch & 0xF0000) >> 16]; | |
674 | buf[4] = hex[(ch & 0xF000) >> 12]; | |
675 | buf[5] = hex[(ch & 0xF00) >> 8]; | |
676 | buf[6] = hex[(ch & 0xF0) >> 4]; | |
677 | buf[7] = hex[(ch & 0xF)]; | |
678 | scm_lfwrite (buf, 8, port); | |
679 | j = i + 1; | |
680 | } | |
681 | } | |
682 | } | |
683 | scm_putc ('"', port); | |
684 | scm_remember_upto_here_1 (exp); | |
685 | } | |
686 | else | |
6234ff20 | 687 | scm_lfwrite_str (exp, port); |
9c44cd45 MG |
688 | scm_remember_upto_here_1 (exp); |
689 | break; | |
28b06554 | 690 | case scm_tc7_symbol: |
cc95e00a | 691 | if (scm_i_symbol_is_interned (exp)) |
9ff28a13 | 692 | { |
e23106d5 | 693 | scm_i_print_symbol_name (exp, port); |
9ff28a13 MV |
694 | scm_remember_upto_here_1 (exp); |
695 | } | |
696 | else | |
697 | { | |
698 | scm_puts ("#<uninterned-symbol ", port); | |
e23106d5 | 699 | scm_i_print_symbol_name (exp, port); |
9ff28a13 | 700 | scm_putc (' ', port); |
0345e278 | 701 | scm_uintprint (SCM_UNPACK (exp), 16, port); |
9ff28a13 MV |
702 | scm_putc ('>', port); |
703 | } | |
6662998f | 704 | break; |
e5aca4b5 MV |
705 | case scm_tc7_variable: |
706 | scm_i_variable_print (exp, port, pstate); | |
707 | break; | |
2fb924f6 AW |
708 | case scm_tc7_program: |
709 | scm_i_program_print (exp, port, pstate); | |
710 | break; | |
e2c2a699 AW |
711 | case scm_tc7_foreign: |
712 | scm_i_foreign_print (exp, port, pstate); | |
713 | break; | |
c99de5aa AW |
714 | case scm_tc7_hashtable: |
715 | scm_i_hashtable_print (exp, port, pstate); | |
716 | break; | |
9ea31741 AW |
717 | case scm_tc7_fluid: |
718 | scm_i_fluid_print (exp, port, pstate); | |
719 | break; | |
45cf2428 AW |
720 | case scm_tc7_dynamic_state: |
721 | scm_i_dynamic_state_print (exp, port, pstate); | |
722 | break; | |
0f2d19dd | 723 | case scm_tc7_wvect: |
c62fbfe1 | 724 | ENTER_NESTED_DATA (pstate, exp, circref); |
0f2d19dd | 725 | if (SCM_IS_WHVEC (exp)) |
b7f3516f | 726 | scm_puts ("#wh(", port); |
0f2d19dd | 727 | else |
b7f3516f | 728 | scm_puts ("#w(", port); |
0f2d19dd JB |
729 | goto common_vector_printer; |
730 | ||
807e5a66 LC |
731 | case scm_tc7_bytevector: |
732 | scm_i_print_bytevector (exp, port, pstate); | |
733 | break; | |
0f2d19dd | 734 | case scm_tc7_vector: |
c62fbfe1 | 735 | ENTER_NESTED_DATA (pstate, exp, circref); |
b7f3516f | 736 | scm_puts ("#(", port); |
0f2d19dd | 737 | common_vector_printer: |
9fbaf27c | 738 | { |
c014a02e | 739 | register long i; |
4057a3e0 | 740 | long last = SCM_SIMPLE_VECTOR_LENGTH (exp) - 1; |
9fbaf27c | 741 | int cutp = 0; |
4057a3e0 MV |
742 | if (pstate->fancyp |
743 | && SCM_SIMPLE_VECTOR_LENGTH (exp) > pstate->length) | |
9fbaf27c MD |
744 | { |
745 | last = pstate->length - 1; | |
746 | cutp = 1; | |
747 | } | |
c367c4b4 | 748 | if (SCM_I_WVECTP (exp)) |
9fbaf27c | 749 | { |
c367c4b4 LC |
750 | /* Elements of weak vectors may not be accessed via the |
751 | `SIMPLE_VECTOR_REF ()' macro. */ | |
752 | for (i = 0; i < last; ++i) | |
753 | { | |
754 | scm_iprin1 (scm_c_vector_ref (exp, i), | |
755 | port, pstate); | |
756 | scm_putc (' ', port); | |
757 | } | |
9fbaf27c | 758 | } |
c367c4b4 LC |
759 | else |
760 | { | |
761 | for (i = 0; i < last; ++i) | |
762 | { | |
763 | scm_iprin1 (SCM_SIMPLE_VECTOR_REF (exp, i), port, pstate); | |
764 | scm_putc (' ', port); | |
765 | } | |
766 | } | |
767 | ||
9fbaf27c MD |
768 | if (i == last) |
769 | { | |
770 | /* CHECK_INTS; */ | |
c367c4b4 | 771 | scm_iprin1 (scm_c_vector_ref (exp, i), port, pstate); |
9fbaf27c MD |
772 | } |
773 | if (cutp) | |
b7f3516f TT |
774 | scm_puts (" ...", port); |
775 | scm_putc (')', port); | |
9fbaf27c | 776 | } |
c62fbfe1 | 777 | EXIT_NESTED_DATA (pstate); |
0f2d19dd | 778 | break; |
f36878ba | 779 | case scm_tc7_gsubr: |
e23106d5 MG |
780 | { |
781 | SCM name = scm_symbol_to_string (SCM_SUBR_NAME (exp)); | |
782 | scm_puts (SCM_SUBR_GENERIC (exp) | |
783 | ? "#<primitive-generic " | |
784 | : "#<primitive-procedure ", | |
785 | port); | |
786 | scm_lfwrite_str (name, port); | |
787 | scm_putc ('>', port); | |
788 | break; | |
789 | } | |
0f2d19dd | 790 | case scm_tc7_port: |
5ca6dc39 JB |
791 | { |
792 | register long i = SCM_PTOBNUM (exp); | |
793 | if (i < scm_numptob | |
794 | && scm_ptobs[i].print | |
795 | && (scm_ptobs[i].print) (exp, port, pstate)) | |
a51ea417 | 796 | break; |
5ca6dc39 JB |
797 | goto punk; |
798 | } | |
799 | case scm_tc7_smob: | |
7a7f7c53 DH |
800 | ENTER_NESTED_DATA (pstate, exp, circref); |
801 | SCM_SMOB_DESCRIPTOR (exp).print (exp, port, pstate); | |
802 | EXIT_NESTED_DATA (pstate); | |
803 | break; | |
0f2d19dd | 804 | default: |
314b8716 | 805 | /* case scm_tcs_closures: */ |
a51ea417 MD |
806 | punk: |
807 | scm_ipruk ("type", exp, port); | |
0f2d19dd JB |
808 | } |
809 | } | |
810 | } | |
811 | ||
c62fbfe1 MD |
812 | /* Print states are necessary for circular reference safe printing. |
813 | * They are also expensive to allocate. Therefore print states are | |
814 | * kept in a pool so that they can be reused. | |
815 | */ | |
1cc91f1b | 816 | |
bb35f315 MV |
817 | /* The PORT argument can also be a print-state/port pair, which will |
818 | * then be used instead of allocating a new print state. This is | |
819 | * useful for continuing a chain of print calls from Scheme. */ | |
820 | ||
a51ea417 | 821 | void |
1bbd0b84 | 822 | scm_prin1 (SCM exp, SCM port, int writingp) |
a51ea417 | 823 | { |
c4f37e80 MV |
824 | SCM handle = SCM_BOOL_F; /* Will GC protect the handle whilst unlinked */ |
825 | SCM pstate_scm; | |
c62fbfe1 | 826 | scm_print_state *pstate; |
15635be5 | 827 | int old_writingp; |
c62fbfe1 | 828 | |
bb35f315 MV |
829 | /* If PORT is a print-state/port pair, use that. Else create a new |
830 | print-state. */ | |
c4f37e80 | 831 | |
0c95b57d | 832 | if (SCM_PORT_WITH_PS_P (port)) |
bb35f315 | 833 | { |
52235e71 MD |
834 | pstate_scm = SCM_PORT_WITH_PS_PS (port); |
835 | port = SCM_PORT_WITH_PS_PORT (port); | |
bb35f315 MV |
836 | } |
837 | else | |
c62fbfe1 | 838 | { |
c4f37e80 | 839 | /* First try to allocate a print state from the pool */ |
9de87eea | 840 | scm_i_pthread_mutex_lock (&print_state_mutex); |
d2e53ed6 | 841 | if (!scm_is_null (print_state_pool)) |
c4f37e80 | 842 | { |
d5cf5324 DH |
843 | handle = print_state_pool; |
844 | print_state_pool = SCM_CDR (print_state_pool); | |
c4f37e80 | 845 | } |
9de87eea | 846 | scm_i_pthread_mutex_unlock (&print_state_mutex); |
7888309b | 847 | if (scm_is_false (handle)) |
d5cf5324 | 848 | handle = scm_list_1 (make_print_state ()); |
c4f37e80 | 849 | pstate_scm = SCM_CAR (handle); |
c62fbfe1 | 850 | } |
c62fbfe1 | 851 | |
c4f37e80 | 852 | pstate = SCM_PRINT_STATE (pstate_scm); |
15635be5 | 853 | old_writingp = pstate->writingp; |
c62fbfe1 MD |
854 | pstate->writingp = writingp; |
855 | scm_iprin1 (exp, port, pstate); | |
15635be5 | 856 | pstate->writingp = old_writingp; |
c62fbfe1 | 857 | |
bb35f315 MV |
858 | /* Return print state to pool if it has been created above and |
859 | hasn't escaped to Scheme. */ | |
860 | ||
7888309b | 861 | if (scm_is_true (handle) && !pstate->revealed) |
c4f37e80 | 862 | { |
9de87eea | 863 | scm_i_pthread_mutex_lock (&print_state_mutex); |
d5cf5324 DH |
864 | SCM_SETCDR (handle, print_state_pool); |
865 | print_state_pool = handle; | |
9de87eea | 866 | scm_i_pthread_mutex_unlock (&print_state_mutex); |
c4f37e80 | 867 | } |
a51ea417 MD |
868 | } |
869 | ||
9c44cd45 MG |
870 | /* Print a character. |
871 | */ | |
872 | void | |
889975e5 | 873 | scm_i_charprint (scm_t_wchar ch, SCM port) |
9c44cd45 MG |
874 | { |
875 | scm_t_wchar *wbuf; | |
876 | SCM wstr = scm_i_make_wide_string (1, &wbuf); | |
877 | ||
878 | wbuf[0] = ch; | |
879 | scm_lfwrite_str (wstr, port); | |
880 | } | |
0f2d19dd JB |
881 | |
882 | /* Print an integer. | |
883 | */ | |
1cc91f1b | 884 | |
0f2d19dd | 885 | void |
a406c9e9 | 886 | scm_intprint (scm_t_intmax n, int radix, SCM port) |
0f2d19dd JB |
887 | { |
888 | char num_buf[SCM_INTBUFLEN]; | |
b7f3516f | 889 | scm_lfwrite (num_buf, scm_iint2str (n, radix, num_buf), port); |
0f2d19dd JB |
890 | } |
891 | ||
a406c9e9 MV |
892 | void |
893 | scm_uintprint (scm_t_uintmax n, int radix, SCM port) | |
894 | { | |
895 | char num_buf[SCM_INTBUFLEN]; | |
896 | scm_lfwrite (num_buf, scm_iuint2str (n, radix, num_buf), port); | |
897 | } | |
898 | ||
0f2d19dd JB |
899 | /* Print an object of unrecognized type. |
900 | */ | |
1cc91f1b | 901 | |
0f2d19dd | 902 | void |
1bbd0b84 | 903 | scm_ipruk (char *hdr, SCM ptr, SCM port) |
0f2d19dd | 904 | { |
b7f3516f TT |
905 | scm_puts ("#<unknown-", port); |
906 | scm_puts (hdr, port); | |
26224b3f | 907 | if (1) /* (scm_in_heap_p (ptr)) */ /* FIXME */ |
0f2d19dd | 908 | { |
b7f3516f | 909 | scm_puts (" (0x", port); |
0345e278 | 910 | scm_uintprint (SCM_CELL_WORD_0 (ptr), 16, port); |
b7f3516f | 911 | scm_puts (" . 0x", port); |
0345e278 | 912 | scm_uintprint (SCM_CELL_WORD_1 (ptr), 16, port); |
b7f3516f | 913 | scm_puts (") @", port); |
0f2d19dd | 914 | } |
b7f3516f | 915 | scm_puts (" 0x", port); |
0345e278 | 916 | scm_uintprint (SCM_UNPACK (ptr), 16, port); |
b7f3516f | 917 | scm_putc ('>', port); |
0f2d19dd JB |
918 | } |
919 | ||
1cc91f1b | 920 | |
904a077d | 921 | /* Print a list. |
22a52da1 | 922 | */ |
0f2d19dd | 923 | void |
34d19ef6 | 924 | scm_iprlist (char *hdr, SCM exp, int tlr, SCM port, scm_print_state *pstate) |
0f2d19dd | 925 | { |
c62fbfe1 | 926 | register SCM hare, tortoise; |
c014a02e | 927 | long floor = pstate->top - 2; |
b7f3516f | 928 | scm_puts (hdr, port); |
0f2d19dd | 929 | /* CHECK_INTS; */ |
c62fbfe1 MD |
930 | if (pstate->fancyp) |
931 | goto fancy_printing; | |
932 | ||
933 | /* Run a hare and tortoise so that total time complexity will be | |
934 | O(depth * N) instead of O(N^2). */ | |
935 | hare = SCM_CDR (exp); | |
936 | tortoise = exp; | |
d2e53ed6 | 937 | while (scm_is_pair (hare)) |
c62fbfe1 | 938 | { |
bc36d050 | 939 | if (scm_is_eq (hare, tortoise)) |
c62fbfe1 MD |
940 | goto fancy_printing; |
941 | hare = SCM_CDR (hare); | |
d2e53ed6 | 942 | if (!scm_is_pair (hare)) |
c62fbfe1 MD |
943 | break; |
944 | hare = SCM_CDR (hare); | |
945 | tortoise = SCM_CDR (tortoise); | |
946 | } | |
947 | ||
948 | /* No cdr cycles intrinsic to this list */ | |
949 | scm_iprin1 (SCM_CAR (exp), port, pstate); | |
d2e53ed6 | 950 | for (exp = SCM_CDR (exp); scm_is_pair (exp); exp = SCM_CDR (exp)) |
0f2d19dd | 951 | { |
c014a02e | 952 | register long i; |
5ca6dc39 | 953 | |
c62fbfe1 | 954 | for (i = floor; i >= 0; --i) |
509759dd | 955 | if (scm_is_eq (PSTATE_STACK_REF(pstate, i), exp)) |
c62fbfe1 MD |
956 | goto circref; |
957 | PUSH_REF (pstate, exp); | |
b7f3516f | 958 | scm_putc (' ', port); |
0f2d19dd | 959 | /* CHECK_INTS; */ |
c62fbfe1 | 960 | scm_iprin1 (SCM_CAR (exp), port, pstate); |
0f2d19dd | 961 | } |
c96d76b8 | 962 | if (!SCM_NULL_OR_NIL_P (exp)) |
0f2d19dd | 963 | { |
b7f3516f | 964 | scm_puts (" . ", port); |
c62fbfe1 | 965 | scm_iprin1 (exp, port, pstate); |
0f2d19dd | 966 | } |
c62fbfe1 | 967 | |
a51ea417 | 968 | end: |
b7f3516f | 969 | scm_putc (tlr, port); |
c62fbfe1 | 970 | pstate->top = floor + 2; |
a51ea417 | 971 | return; |
c62fbfe1 MD |
972 | |
973 | fancy_printing: | |
974 | { | |
c014a02e | 975 | long n = pstate->length; |
c62fbfe1 MD |
976 | |
977 | scm_iprin1 (SCM_CAR (exp), port, pstate); | |
978 | exp = SCM_CDR (exp); --n; | |
d2e53ed6 | 979 | for (; scm_is_pair (exp); exp = SCM_CDR (exp)) |
c62fbfe1 | 980 | { |
c014a02e | 981 | register unsigned long i; |
5ca6dc39 | 982 | |
c62fbfe1 | 983 | for (i = 0; i < pstate->top; ++i) |
509759dd | 984 | if (scm_is_eq (PSTATE_STACK_REF(pstate, i), exp)) |
c62fbfe1 MD |
985 | goto fancy_circref; |
986 | if (pstate->fancyp) | |
987 | { | |
988 | if (n == 0) | |
989 | { | |
b7f3516f | 990 | scm_puts (" ...", port); |
c62fbfe1 MD |
991 | goto skip_tail; |
992 | } | |
993 | else | |
994 | --n; | |
995 | } | |
996 | PUSH_REF(pstate, exp); | |
997 | ++pstate->list_offset; | |
b7f3516f | 998 | scm_putc (' ', port); |
c62fbfe1 MD |
999 | /* CHECK_INTS; */ |
1000 | scm_iprin1 (SCM_CAR (exp), port, pstate); | |
1001 | } | |
1002 | } | |
c96d76b8 | 1003 | if (!SCM_NULL_OR_NIL_P (exp)) |
c62fbfe1 | 1004 | { |
b7f3516f | 1005 | scm_puts (" . ", port); |
c62fbfe1 MD |
1006 | scm_iprin1 (exp, port, pstate); |
1007 | } | |
1008 | skip_tail: | |
1009 | pstate->list_offset -= pstate->top - floor - 2; | |
a51ea417 | 1010 | goto end; |
a51ea417 | 1011 | |
c62fbfe1 MD |
1012 | fancy_circref: |
1013 | pstate->list_offset -= pstate->top - floor - 2; | |
1014 | ||
1015 | circref: | |
b7f3516f | 1016 | scm_puts (" . ", port); |
c62fbfe1 MD |
1017 | print_circref (port, pstate, exp); |
1018 | goto end; | |
0f2d19dd JB |
1019 | } |
1020 | ||
1021 | \f | |
1022 | ||
bb35f315 MV |
1023 | int |
1024 | scm_valid_oport_value_p (SCM val) | |
1025 | { | |
368cf54d GB |
1026 | return (SCM_OPOUTPORTP (val) |
1027 | || (SCM_PORT_WITH_PS_P (val) | |
1028 | && SCM_OPOUTPORTP (SCM_PORT_WITH_PS_PORT (val)))); | |
bb35f315 MV |
1029 | } |
1030 | ||
8b840115 | 1031 | /* SCM_GPROC(s_write, "write", 1, 1, 0, scm_write, g_write); */ |
1cc91f1b | 1032 | |
0f2d19dd | 1033 | SCM |
1bbd0b84 | 1034 | scm_write (SCM obj, SCM port) |
0f2d19dd JB |
1035 | { |
1036 | if (SCM_UNBNDP (port)) | |
9de87eea | 1037 | port = scm_current_output_port (); |
3eb7e6ee JB |
1038 | |
1039 | SCM_ASSERT (scm_valid_oport_value_p (port), port, SCM_ARG2, s_write); | |
bb35f315 | 1040 | |
a51ea417 | 1041 | scm_prin1 (obj, port, 1); |
23d72566 | 1042 | #if 0 |
0f2d19dd JB |
1043 | #ifdef HAVE_PIPE |
1044 | # ifdef EPIPE | |
1045 | if (EPIPE == errno) | |
1046 | scm_close_port (port); | |
1047 | # endif | |
23d72566 | 1048 | #endif |
0f2d19dd JB |
1049 | #endif |
1050 | return SCM_UNSPECIFIED; | |
1051 | } | |
1052 | ||
1053 | ||
8b840115 | 1054 | /* SCM_GPROC(s_display, "display", 1, 1, 0, scm_display, g_display); */ |
1cc91f1b | 1055 | |
0f2d19dd | 1056 | SCM |
1bbd0b84 | 1057 | scm_display (SCM obj, SCM port) |
0f2d19dd JB |
1058 | { |
1059 | if (SCM_UNBNDP (port)) | |
9de87eea | 1060 | port = scm_current_output_port (); |
3eb7e6ee JB |
1061 | |
1062 | SCM_ASSERT (scm_valid_oport_value_p (port), port, SCM_ARG2, s_display); | |
bb35f315 | 1063 | |
a51ea417 | 1064 | scm_prin1 (obj, port, 0); |
23d72566 | 1065 | #if 0 |
0f2d19dd JB |
1066 | #ifdef HAVE_PIPE |
1067 | # ifdef EPIPE | |
1068 | if (EPIPE == errno) | |
1069 | scm_close_port (port); | |
1070 | # endif | |
23d72566 | 1071 | #endif |
0f2d19dd JB |
1072 | #endif |
1073 | return SCM_UNSPECIFIED; | |
1074 | } | |
1075 | ||
70d63753 GB |
1076 | |
1077 | SCM_DEFINE (scm_simple_format, "simple-format", 2, 0, 1, | |
1078 | (SCM destination, SCM message, SCM args), | |
eca65e90 MG |
1079 | "Write @var{message} to @var{destination}, defaulting to\n" |
1080 | "the current output port.\n" | |
1081 | "@var{message} can contain @code{~A} (was @code{%s}) and\n" | |
1082 | "@code{~S} (was @code{%S}) escapes. When printed,\n" | |
1083 | "the escapes are replaced with corresponding members of\n" | |
1084 | "@var{ARGS}:\n" | |
1085 | "@code{~A} formats using @code{display} and @code{~S} formats\n" | |
1086 | "using @code{write}.\n" | |
1087 | "If @var{destination} is @code{#t}, then use the current output\n" | |
1088 | "port, if @var{destination} is @code{#f}, then return a string\n" | |
1089 | "containing the formatted text. Does not add a trailing newline.") | |
70d63753 GB |
1090 | #define FUNC_NAME s_scm_simple_format |
1091 | { | |
dfd03fb9 | 1092 | SCM port, answer = SCM_UNSPECIFIED; |
70d63753 GB |
1093 | int fReturnString = 0; |
1094 | int writingp; | |
889975e5 | 1095 | size_t start, p, end; |
70d63753 | 1096 | |
bc36d050 | 1097 | if (scm_is_eq (destination, SCM_BOOL_T)) |
daba1a71 | 1098 | { |
9de87eea | 1099 | destination = port = scm_current_output_port (); |
daba1a71 | 1100 | } |
7888309b | 1101 | else if (scm_is_false (destination)) |
daba1a71 MD |
1102 | { |
1103 | fReturnString = 1; | |
dfd03fb9 MD |
1104 | port = scm_mkstrport (SCM_INUM0, |
1105 | scm_make_string (SCM_INUM0, SCM_UNDEFINED), | |
1106 | SCM_OPN | SCM_WRTNG, | |
1107 | FUNC_NAME); | |
1108 | destination = port; | |
daba1a71 MD |
1109 | } |
1110 | else | |
1111 | { | |
1112 | SCM_VALIDATE_OPORT_VALUE (1, destination); | |
dfd03fb9 | 1113 | port = SCM_COERCE_OUTPORT (destination); |
daba1a71 MD |
1114 | } |
1115 | SCM_VALIDATE_STRING (2, message); | |
af45e3b0 | 1116 | SCM_VALIDATE_REST_ARGUMENT (args); |
70d63753 | 1117 | |
889975e5 MG |
1118 | p = 0; |
1119 | start = 0; | |
1120 | end = scm_i_string_length (message); | |
b24b5e13 | 1121 | for (p = start; p != end; ++p) |
889975e5 | 1122 | if (scm_i_string_ref (message, p) == '~') |
70d63753 | 1123 | { |
b24b5e13 | 1124 | if (++p == end) |
6662998f MV |
1125 | break; |
1126 | ||
889975e5 | 1127 | switch (scm_i_string_ref (message, p)) |
6662998f MV |
1128 | { |
1129 | case 'A': case 'a': | |
1130 | writingp = 0; | |
1131 | break; | |
1132 | case 'S': case 's': | |
1133 | writingp = 1; | |
1134 | break; | |
1135 | case '~': | |
889975e5 | 1136 | scm_lfwrite_substr (message, start, p, port); |
6662998f MV |
1137 | start = p + 1; |
1138 | continue; | |
1139 | case '%': | |
889975e5 | 1140 | scm_lfwrite_substr (message, start, p - 1, port); |
dfd03fb9 | 1141 | scm_newline (port); |
6662998f MV |
1142 | start = p + 1; |
1143 | continue; | |
1144 | default: | |
1afff620 | 1145 | SCM_MISC_ERROR ("FORMAT: Unsupported format option ~~~A - use (ice-9 format) instead", |
889975e5 | 1146 | scm_list_1 (SCM_MAKE_CHAR (scm_i_string_ref (message, p)))); |
6662998f MV |
1147 | |
1148 | } | |
70d63753 | 1149 | |
6662998f | 1150 | |
d2e53ed6 | 1151 | if (!scm_is_pair (args)) |
1afff620 | 1152 | SCM_MISC_ERROR ("FORMAT: Missing argument for ~~~A", |
889975e5 | 1153 | scm_list_1 (SCM_MAKE_CHAR (scm_i_string_ref (message, p)))); |
6662998f | 1154 | |
889975e5 | 1155 | scm_lfwrite_substr (message, start, p - 1, port); |
dfd03fb9 | 1156 | /* we pass destination here */ |
70d63753 GB |
1157 | scm_prin1 (SCM_CAR (args), destination, writingp); |
1158 | args = SCM_CDR (args); | |
1159 | start = p + 1; | |
1160 | } | |
6662998f | 1161 | |
889975e5 | 1162 | scm_lfwrite_substr (message, start, p, port); |
bc36d050 | 1163 | if (!scm_is_eq (args, SCM_EOL)) |
1afff620 KN |
1164 | SCM_MISC_ERROR ("FORMAT: ~A superfluous arguments", |
1165 | scm_list_1 (scm_length (args))); | |
70d63753 GB |
1166 | |
1167 | if (fReturnString) | |
1168 | answer = scm_strport_to_string (destination); | |
1169 | ||
daba1a71 | 1170 | return scm_return_first (answer, message); |
70d63753 GB |
1171 | } |
1172 | #undef FUNC_NAME | |
1173 | ||
1174 | ||
3b3b36dd | 1175 | SCM_DEFINE (scm_newline, "newline", 0, 1, 0, |
b450f070 | 1176 | (SCM port), |
8f85c0c6 NJ |
1177 | "Send a newline to @var{port}.\n" |
1178 | "If @var{port} is omitted, send to the current output port.") | |
1bbd0b84 | 1179 | #define FUNC_NAME s_scm_newline |
0f2d19dd JB |
1180 | { |
1181 | if (SCM_UNBNDP (port)) | |
9de87eea | 1182 | port = scm_current_output_port (); |
3eb7e6ee | 1183 | |
34d19ef6 | 1184 | SCM_VALIDATE_OPORT_VALUE (1, port); |
bb35f315 | 1185 | |
0ef4ae82 | 1186 | scm_putc ('\n', SCM_COERCE_OUTPORT (port)); |
0f2d19dd JB |
1187 | return SCM_UNSPECIFIED; |
1188 | } | |
1bbd0b84 | 1189 | #undef FUNC_NAME |
0f2d19dd | 1190 | |
3b3b36dd | 1191 | SCM_DEFINE (scm_write_char, "write-char", 1, 1, 0, |
b450f070 | 1192 | (SCM chr, SCM port), |
eca65e90 | 1193 | "Send character @var{chr} to @var{port}.") |
1bbd0b84 | 1194 | #define FUNC_NAME s_scm_write_char |
0f2d19dd JB |
1195 | { |
1196 | if (SCM_UNBNDP (port)) | |
9de87eea | 1197 | port = scm_current_output_port (); |
3eb7e6ee | 1198 | |
34d19ef6 HWN |
1199 | SCM_VALIDATE_CHAR (1, chr); |
1200 | SCM_VALIDATE_OPORT_VALUE (2, port); | |
3d03f939 MG |
1201 | |
1202 | scm_i_charprint (SCM_CHAR (chr), SCM_COERCE_OUTPORT (port)); | |
23d72566 | 1203 | #if 0 |
0f2d19dd JB |
1204 | #ifdef HAVE_PIPE |
1205 | # ifdef EPIPE | |
1206 | if (EPIPE == errno) | |
1207 | scm_close_port (port); | |
1208 | # endif | |
23d72566 | 1209 | #endif |
0f2d19dd JB |
1210 | #endif |
1211 | return SCM_UNSPECIFIED; | |
1212 | } | |
1bbd0b84 | 1213 | #undef FUNC_NAME |
0f2d19dd | 1214 | |
0f2d19dd JB |
1215 | \f |
1216 | ||
bb35f315 | 1217 | /* Call back to Scheme code to do the printing of special objects |
c19bc088 MD |
1218 | * (like structs). SCM_PRINTER_APPLY applies PROC to EXP and a smob |
1219 | * containing PORT and PSTATE. This object can be used as the port for | |
1220 | * display/write etc to continue the current print chain. The REVEALED | |
1221 | * field of PSTATE is set to true to indicate that the print state has | |
1222 | * escaped to Scheme and thus has to be freed by the GC. | |
1223 | */ | |
1224 | ||
92c2555f | 1225 | scm_t_bits scm_tc16_port_with_ps; |
c19bc088 MD |
1226 | |
1227 | /* Print exactly as the port itself would */ | |
1228 | ||
1229 | static int | |
e841c3e0 | 1230 | port_with_ps_print (SCM obj, SCM port, scm_print_state *pstate) |
c19bc088 MD |
1231 | { |
1232 | obj = SCM_PORT_WITH_PS_PORT (obj); | |
1233 | return scm_ptobs[SCM_PTOBNUM (obj)].print (obj, port, pstate); | |
1234 | } | |
c4f37e80 MV |
1235 | |
1236 | SCM | |
1bbd0b84 | 1237 | scm_printer_apply (SCM proc, SCM exp, SCM port, scm_print_state *pstate) |
c4f37e80 | 1238 | { |
bb35f315 | 1239 | pstate->revealed = 1; |
dfd03fb9 MD |
1240 | return scm_call_2 (proc, exp, |
1241 | scm_i_port_with_print_state (port, pstate->handle)); | |
c19bc088 MD |
1242 | } |
1243 | ||
dfd03fb9 | 1244 | SCM_DEFINE (scm_port_with_print_state, "port-with-print-state", 1, 1, 0, |
1bbd0b84 | 1245 | (SCM port, SCM pstate), |
71331188 | 1246 | "Create a new port which behaves like @var{port}, but with an\n" |
dfd03fb9 MD |
1247 | "included print state @var{pstate}. @var{pstate} is optional.\n" |
1248 | "If @var{pstate} isn't supplied and @var{port} already has\n" | |
1249 | "a print state, the old print state is reused.") | |
1bbd0b84 | 1250 | #define FUNC_NAME s_scm_port_with_print_state |
c19bc088 | 1251 | { |
34d19ef6 | 1252 | SCM_VALIDATE_OPORT_VALUE (1, port); |
dfd03fb9 MD |
1253 | if (!SCM_UNBNDP (pstate)) |
1254 | SCM_VALIDATE_PRINTSTATE (2, pstate); | |
1255 | return scm_i_port_with_print_state (port, pstate); | |
c19bc088 | 1256 | } |
1bbd0b84 | 1257 | #undef FUNC_NAME |
c19bc088 | 1258 | |
a1ec6916 | 1259 | SCM_DEFINE (scm_get_print_state, "get-print-state", 1, 0, 0, |
1bbd0b84 | 1260 | (SCM port), |
71331188 MG |
1261 | "Return the print state of the port @var{port}. If @var{port}\n" |
1262 | "has no associated print state, @code{#f} is returned.") | |
1bbd0b84 | 1263 | #define FUNC_NAME s_scm_get_print_state |
c19bc088 | 1264 | { |
368cf54d GB |
1265 | if (SCM_PORT_WITH_PS_P (port)) |
1266 | return SCM_PORT_WITH_PS_PS (port); | |
f5f2dcff | 1267 | if (SCM_OUTPUT_PORT_P (port)) |
368cf54d | 1268 | return SCM_BOOL_F; |
276dd677 | 1269 | SCM_WRONG_TYPE_ARG (1, port); |
c4f37e80 | 1270 | } |
1bbd0b84 | 1271 | #undef FUNC_NAME |
bb35f315 | 1272 | |
c4f37e80 | 1273 | \f |
1cc91f1b | 1274 | |
0f2d19dd JB |
1275 | void |
1276 | scm_init_print () | |
0f2d19dd | 1277 | { |
c19bc088 | 1278 | SCM vtable, layout, type; |
d5cf5324 | 1279 | |
62560650 | 1280 | scm_init_opts (scm_print_options, scm_print_opts); |
d5cf5324 | 1281 | |
81ae25da MV |
1282 | scm_print_options (scm_list_4 (scm_from_locale_symbol ("highlight-prefix"), |
1283 | scm_from_locale_string ("{"), | |
1284 | scm_from_locale_symbol ("highlight-suffix"), | |
1285 | scm_from_locale_string ("}"))); | |
1286 | ||
d5cf5324 DH |
1287 | scm_gc_register_root (&print_state_pool); |
1288 | scm_gc_register_root (&scm_print_state_vtable); | |
3ce4544c | 1289 | vtable = scm_make_vtable_vtable (scm_nullstr, SCM_INUM0, SCM_EOL); |
cc95e00a MV |
1290 | layout = |
1291 | scm_make_struct_layout (scm_from_locale_string (SCM_PRINT_STATE_LAYOUT)); | |
1afff620 | 1292 | type = scm_make_struct (vtable, SCM_INUM0, scm_list_1 (layout)); |
cc95e00a | 1293 | scm_set_struct_vtable_name_x (type, scm_from_locale_symbol ("print-state")); |
bb35f315 | 1294 | scm_print_state_vtable = type; |
c4f37e80 | 1295 | |
c19bc088 MD |
1296 | /* Don't want to bind a wrapper class in GOOPS, so pass 0 as arg1. */ |
1297 | scm_tc16_port_with_ps = scm_make_smob_type (0, 0); | |
e841c3e0 | 1298 | scm_set_smob_print (scm_tc16_port_with_ps, port_with_ps_print); |
81ae25da | 1299 | |
a0599745 | 1300 | #include "libguile/print.x" |
475fa9a5 MV |
1301 | |
1302 | scm_print_opts[SCM_PRINT_KEYWORD_STYLE_I].val = SCM_UNPACK (sym_reader); | |
0f2d19dd | 1303 | } |
89e00824 ML |
1304 | |
1305 | /* | |
1306 | Local Variables: | |
1307 | c-file-style: "gnu" | |
1308 | End: | |
1309 | */ |