Commit | Line | Data |
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e20d7001 | 1 | /* Copyright (C) 1995-1999,2000,2001, 2002, 2003, 2004, 2006, 2008, 2009 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 MD |
25 | #include <errno.h> |
26 | ||
a0599745 MD |
27 | #include "libguile/_scm.h" |
28 | #include "libguile/chars.h" | |
a002f1a2 | 29 | #include "libguile/continuations.h" |
a0599745 MD |
30 | #include "libguile/smob.h" |
31 | #include "libguile/eval.h" | |
32 | #include "libguile/macros.h" | |
33 | #include "libguile/procprop.h" | |
34 | #include "libguile/read.h" | |
35 | #include "libguile/weaks.h" | |
36 | #include "libguile/unif.h" | |
37 | #include "libguile/alist.h" | |
38 | #include "libguile/struct.h" | |
39 | #include "libguile/objects.h" | |
40 | #include "libguile/ports.h" | |
41 | #include "libguile/root.h" | |
42 | #include "libguile/strings.h" | |
43 | #include "libguile/strports.h" | |
44 | #include "libguile/vectors.h" | |
c96d76b8 | 45 | #include "libguile/lang.h" |
327967ef | 46 | #include "libguile/numbers.h" |
a0599745 MD |
47 | |
48 | #include "libguile/validate.h" | |
49 | #include "libguile/print.h" | |
22fc179a HWN |
50 | |
51 | #include "libguile/private-options.h" | |
52 | ||
0f2d19dd JB |
53 | \f |
54 | ||
55 | /* {Names of immediate symbols} | |
56 | * | |
57 | * This table must agree with the declarations in scm.h: {Immediate Symbols}. | |
58 | */ | |
59 | ||
e17d318f DH |
60 | /* This table must agree with the list of flags in tags.h. */ |
61 | static const char *iflagnames[] = | |
62 | { | |
63 | "#f", | |
64 | "#t", | |
65 | "#<undefined>", | |
66 | "#<eof>", | |
67 | "()", | |
68 | "#<unspecified>", | |
69 | ||
70 | /* Unbound slot marker for GOOPS. For internal use in GOOPS only. */ | |
71 | "#<unbound>", | |
72 | ||
73 | /* Elisp nil value. This is its Scheme name; whenever it's printed in | |
74 | * Elisp, it should appear as the symbol `nil'. */ | |
75 | "#nil" | |
76 | }; | |
77 | ||
475fa9a5 MV |
78 | SCM_SYMBOL (sym_reader, "reader"); |
79 | ||
92c2555f | 80 | scm_t_option scm_print_opts[] = { |
726d810a DH |
81 | { SCM_OPTION_SCM, "closure-hook", SCM_UNPACK (SCM_BOOL_F), |
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 }, | |
95 | ||
e6e4c9af MD |
96 | }; |
97 | ||
a1ec6916 | 98 | SCM_DEFINE (scm_print_options, "print-options-interface", 0, 1, 0, |
1bbd0b84 | 99 | (SCM setting), |
71331188 | 100 | "Option interface for the print options. Instead of using\n" |
1dd05fd8 MG |
101 | "this procedure directly, use the procedures\n" |
102 | "@code{print-enable}, @code{print-disable}, @code{print-set!}\n" | |
103 | "and @code{print-options}.") | |
1bbd0b84 | 104 | #define FUNC_NAME s_scm_print_options |
e6e4c9af | 105 | { |
a51ea417 | 106 | SCM ans = scm_options (setting, |
b7ff98dd | 107 | scm_print_opts, |
1bbd0b84 | 108 | FUNC_NAME); |
e6e4c9af MD |
109 | return ans; |
110 | } | |
1bbd0b84 | 111 | #undef FUNC_NAME |
e6e4c9af | 112 | |
0f2d19dd JB |
113 | \f |
114 | /* {Printing of Scheme Objects} | |
115 | */ | |
116 | ||
a51ea417 | 117 | /* Detection of circular references. |
c62fbfe1 MD |
118 | * |
119 | * Due to other constraints in the implementation, this code has bad | |
5d46ebe3 MD |
120 | * time complexity (O (depth * N)), The printer code can be |
121 | * rewritten to be O(N). | |
a51ea417 | 122 | */ |
dbb5de29 NJ |
123 | #define PUSH_REF(pstate, obj) \ |
124 | do \ | |
125 | { \ | |
126 | PSTATE_STACK_SET (pstate, pstate->top, obj); \ | |
127 | pstate->top++; \ | |
128 | if (pstate->top == pstate->ceiling) \ | |
129 | grow_ref_stack (pstate); \ | |
1bbd0b84 | 130 | } while(0) |
a51ea417 | 131 | |
dbb5de29 NJ |
132 | #define ENTER_NESTED_DATA(pstate, obj, label) \ |
133 | do \ | |
134 | { \ | |
135 | register unsigned long i; \ | |
136 | for (i = 0; i < pstate->top; ++i) \ | |
137 | if (scm_is_eq (PSTATE_STACK_REF (pstate, i), (obj))) \ | |
138 | goto label; \ | |
139 | if (pstate->fancyp) \ | |
140 | { \ | |
141 | if (pstate->top - pstate->list_offset >= pstate->level) \ | |
142 | { \ | |
143 | scm_putc ('#', port); \ | |
144 | return; \ | |
145 | } \ | |
146 | } \ | |
147 | PUSH_REF(pstate, obj); \ | |
1bbd0b84 | 148 | } while(0) |
a51ea417 | 149 | |
dbb5de29 NJ |
150 | #define EXIT_NESTED_DATA(pstate) \ |
151 | do \ | |
152 | { \ | |
153 | --pstate->top; \ | |
154 | PSTATE_STACK_SET (pstate, pstate->top, SCM_UNDEFINED); \ | |
155 | } \ | |
156 | while (0) | |
c62fbfe1 | 157 | |
d5cf5324 DH |
158 | SCM scm_print_state_vtable = SCM_BOOL_F; |
159 | static SCM print_state_pool = SCM_EOL; | |
9de87eea | 160 | scm_i_pthread_mutex_t print_state_mutex = SCM_I_PTHREAD_MUTEX_INITIALIZER; |
c4f37e80 | 161 | |
f843a84c | 162 | #ifdef GUILE_DEBUG /* Used for debugging purposes */ |
1cc91f1b | 163 | |
3b3b36dd | 164 | SCM_DEFINE (scm_current_pstate, "current-pstate", 0, 0, 0, |
1bbd0b84 | 165 | (), |
d5cf5324 | 166 | "Return the current-pstate -- the car of the\n" |
5352393c MG |
167 | "@code{print_state_pool}. @code{current-pstate} is only\n" |
168 | "included in @code{--enable-guile-debug} builds.") | |
1bbd0b84 | 169 | #define FUNC_NAME s_scm_current_pstate |
c62fbfe1 | 170 | { |
d2e53ed6 | 171 | if (!scm_is_null (print_state_pool)) |
d5cf5324 | 172 | return SCM_CAR (print_state_pool); |
a0adfbf0 | 173 | else |
0a284a4e | 174 | return SCM_BOOL_F; |
c62fbfe1 | 175 | } |
1bbd0b84 GB |
176 | #undef FUNC_NAME |
177 | ||
c62fbfe1 MD |
178 | #endif |
179 | ||
180 | #define PSTATE_SIZE 50L | |
181 | ||
698c0295 | 182 | static SCM |
1bbd0b84 | 183 | make_print_state (void) |
698c0295 | 184 | { |
d5cf5324 DH |
185 | SCM print_state |
186 | = scm_make_struct (scm_print_state_vtable, SCM_INUM0, SCM_EOL); | |
bf685b6d | 187 | scm_print_state *pstate = SCM_PRINT_STATE (print_state); |
00ffa0e7 | 188 | pstate->ref_vect = scm_c_make_vector (PSTATE_SIZE, SCM_UNDEFINED); |
4057a3e0 | 189 | pstate->ceiling = SCM_SIMPLE_VECTOR_LENGTH (pstate->ref_vect); |
d232520a | 190 | pstate->highlight_objects = SCM_EOL; |
698c0295 MD |
191 | return print_state; |
192 | } | |
1cc91f1b | 193 | |
c62fbfe1 MD |
194 | SCM |
195 | scm_make_print_state () | |
c62fbfe1 | 196 | { |
230d095f | 197 | SCM answer = SCM_BOOL_F; |
698c0295 MD |
198 | |
199 | /* First try to allocate a print state from the pool */ | |
9de87eea | 200 | scm_i_pthread_mutex_lock (&print_state_mutex); |
d2e53ed6 | 201 | if (!scm_is_null (print_state_pool)) |
698c0295 | 202 | { |
d5cf5324 DH |
203 | answer = SCM_CAR (print_state_pool); |
204 | print_state_pool = SCM_CDR (print_state_pool); | |
698c0295 | 205 | } |
9de87eea | 206 | scm_i_pthread_mutex_unlock (&print_state_mutex); |
698c0295 | 207 | |
7888309b | 208 | return scm_is_false (answer) ? make_print_state () : answer; |
c62fbfe1 | 209 | } |
a51ea417 | 210 | |
698c0295 | 211 | void |
6e8d25a6 | 212 | scm_free_print_state (SCM print_state) |
698c0295 MD |
213 | { |
214 | SCM handle; | |
215 | scm_print_state *pstate = SCM_PRINT_STATE (print_state); | |
216 | /* Cleanup before returning print state to pool. | |
217 | * It is better to do it here. Doing it in scm_prin1 | |
218 | * would cost more since that function is called much more | |
219 | * often. | |
220 | */ | |
221 | pstate->fancyp = 0; | |
bb35f315 | 222 | pstate->revealed = 0; |
d232520a | 223 | pstate->highlight_objects = SCM_EOL; |
9de87eea | 224 | scm_i_pthread_mutex_lock (&print_state_mutex); |
16d4699b | 225 | handle = scm_cons (print_state, print_state_pool); |
d5cf5324 | 226 | print_state_pool = handle; |
9de87eea | 227 | scm_i_pthread_mutex_unlock (&print_state_mutex); |
dfd03fb9 MD |
228 | } |
229 | ||
230 | SCM | |
231 | scm_i_port_with_print_state (SCM port, SCM print_state) | |
232 | { | |
233 | if (SCM_UNBNDP (print_state)) | |
234 | { | |
235 | if (SCM_PORT_WITH_PS_P (port)) | |
236 | return port; | |
237 | else | |
238 | print_state = scm_make_print_state (); | |
239 | /* port does not need to be coerced since it doesn't have ps */ | |
240 | } | |
241 | else | |
242 | port = SCM_COERCE_OUTPORT (port); | |
243 | SCM_RETURN_NEWSMOB (scm_tc16_port_with_ps, | |
244 | SCM_UNPACK (scm_cons (port, print_state))); | |
698c0295 | 245 | } |
1cc91f1b | 246 | |
a51ea417 | 247 | static void |
1bbd0b84 | 248 | grow_ref_stack (scm_print_state *pstate) |
a51ea417 | 249 | { |
4057a3e0 MV |
250 | SCM old_vect = pstate->ref_vect; |
251 | size_t old_size = SCM_SIMPLE_VECTOR_LENGTH (old_vect); | |
252 | size_t new_size = 2 * pstate->ceiling; | |
00ffa0e7 | 253 | SCM new_vect = scm_c_make_vector (new_size, SCM_UNDEFINED); |
b17004b8 DH |
254 | unsigned long int i; |
255 | ||
256 | for (i = 0; i != old_size; ++i) | |
4057a3e0 | 257 | SCM_SIMPLE_VECTOR_SET (new_vect, i, SCM_SIMPLE_VECTOR_REF (old_vect, i)); |
b17004b8 DH |
258 | |
259 | pstate->ref_vect = new_vect; | |
bf685b6d | 260 | pstate->ceiling = new_size; |
a51ea417 MD |
261 | } |
262 | ||
509759dd MV |
263 | #define PSTATE_STACK_REF(p,i) SCM_SIMPLE_VECTOR_REF((p)->ref_vect, (i)) |
264 | #define PSTATE_STACK_SET(p,i,v) SCM_SIMPLE_VECTOR_SET((p)->ref_vect, (i), (v)) | |
1cc91f1b | 265 | |
a51ea417 | 266 | static void |
34d19ef6 | 267 | print_circref (SCM port, scm_print_state *pstate, SCM ref) |
a51ea417 | 268 | { |
c014a02e ML |
269 | register long i; |
270 | long self = pstate->top - 1; | |
c62fbfe1 | 271 | i = pstate->top - 1; |
509759dd | 272 | if (scm_is_pair (PSTATE_STACK_REF (pstate, i))) |
c62fbfe1 MD |
273 | { |
274 | while (i > 0) | |
275 | { | |
509759dd MV |
276 | if (!scm_is_pair (PSTATE_STACK_REF (pstate, i-1)) |
277 | || !scm_is_eq (SCM_CDR (PSTATE_STACK_REF (pstate, i-1)), | |
278 | SCM_CDR (PSTATE_STACK_REF (pstate, i)))) | |
c62fbfe1 MD |
279 | break; |
280 | --i; | |
281 | } | |
282 | self = i; | |
283 | } | |
284 | for (i = pstate->top - 1; 1; --i) | |
509759dd | 285 | if (scm_is_eq (PSTATE_STACK_REF(pstate, i), ref)) |
c62fbfe1 | 286 | break; |
b7f3516f | 287 | scm_putc ('#', port); |
c62fbfe1 | 288 | scm_intprint (i - self, 10, port); |
b7f3516f | 289 | scm_putc ('#', port); |
a51ea417 MD |
290 | } |
291 | ||
6662998f MV |
292 | /* Print the name of a symbol. */ |
293 | ||
475fa9a5 MV |
294 | static int |
295 | quote_keywordish_symbol (const char *str, size_t len) | |
296 | { | |
297 | SCM option; | |
298 | ||
299 | /* LEN is guaranteed to be > 0. | |
300 | */ | |
301 | if (str[0] != ':' && str[len-1] != ':') | |
302 | return 0; | |
303 | ||
304 | option = SCM_PRINT_KEYWORD_STYLE; | |
305 | if (scm_is_false (option)) | |
306 | return 0; | |
307 | if (scm_is_eq (option, sym_reader)) | |
308 | return scm_is_true (SCM_PACK (SCM_KEYWORD_STYLE)); | |
309 | return 1; | |
310 | } | |
311 | ||
6662998f MV |
312 | void |
313 | scm_print_symbol_name (const char *str, size_t len, SCM port) | |
314 | { | |
c6b49e89 MV |
315 | /* This points to the first character that has not yet been written to the |
316 | * port. */ | |
317 | size_t pos = 0; | |
318 | /* This points to the character we're currently looking at. */ | |
6662998f | 319 | size_t end; |
c6b49e89 MV |
320 | /* If the name contains weird characters, we'll escape them with |
321 | * backslashes and set this flag; it indicates that we should surround the | |
322 | * name with "#{" and "}#". */ | |
323 | int weird = 0; | |
324 | /* Backslashes are not sufficient to make a name weird, but if a name is | |
325 | * weird because of other characters, backslahes need to be escaped too. | |
326 | * The first time we see a backslash, we set maybe_weird, and mw_pos points | |
327 | * to the backslash. Then if the name turns out to be weird, we re-process | |
327967ef MV |
328 | * everything starting from mw_pos. |
329 | * We could instead make backslashes always weird. This is not necessary | |
330 | * to ensure that the output is (read)-able, but it would make this code | |
331 | * simpler and faster. */ | |
c6b49e89 | 332 | int maybe_weird = 0; |
6662998f | 333 | size_t mw_pos = 0; |
6662998f | 334 | |
475fa9a5 MV |
335 | if (len == 0 || str[0] == '\'' || str[0] == '`' || str[0] == ',' |
336 | || quote_keywordish_symbol (str, len) | |
337 | || (str[0] == '.' && len == 1) | |
2b829bbb | 338 | || scm_is_true (scm_c_locale_stringn_to_number (str, len, 10))) |
6662998f MV |
339 | { |
340 | scm_lfwrite ("#{", 2, port); | |
341 | weird = 1; | |
342 | } | |
c6b49e89 | 343 | |
6662998f MV |
344 | for (end = pos; end < len; ++end) |
345 | switch (str[end]) | |
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) | |
c6b49e89 | 370 | scm_lfwrite (str + pos, end - pos, port); |
6662998f MV |
371 | { |
372 | char buf[2]; | |
373 | buf[0] = '\\'; | |
374 | buf[1] = str[end]; | |
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) | |
392 | scm_lfwrite (str + pos, end - pos, port); | |
393 | if (weird) | |
394 | scm_lfwrite ("}#", 2, port); | |
395 | } | |
396 | ||
c62fbfe1 | 397 | /* Print generally. Handles both write and display according to PSTATE. |
0f2d19dd | 398 | */ |
8b840115 MD |
399 | SCM_GPROC(s_write, "write", 1, 1, 0, scm_write, g_write); |
400 | SCM_GPROC(s_display, "display", 1, 1, 0, scm_display, g_display); | |
1cc91f1b | 401 | |
d232520a MV |
402 | static void iprin1 (SCM exp, SCM port, scm_print_state *pstate); |
403 | ||
0f2d19dd | 404 | void |
1bbd0b84 | 405 | scm_iprin1 (SCM exp, SCM port, scm_print_state *pstate) |
d232520a MV |
406 | { |
407 | if (pstate->fancyp | |
408 | && scm_is_true (scm_memq (exp, pstate->highlight_objects))) | |
409 | { | |
81ae25da | 410 | scm_display (SCM_PRINT_HIGHLIGHT_PREFIX, port); |
d232520a | 411 | iprin1 (exp, port, pstate); |
81ae25da | 412 | scm_display (SCM_PRINT_HIGHLIGHT_SUFFIX, port); |
d232520a MV |
413 | } |
414 | else | |
415 | iprin1 (exp, port, pstate); | |
416 | } | |
417 | ||
418 | static void | |
419 | iprin1 (SCM exp, SCM port, scm_print_state *pstate) | |
0f2d19dd | 420 | { |
54778cd3 | 421 | switch (SCM_ITAG3 (exp)) |
0f2d19dd | 422 | { |
e34f941a DH |
423 | case scm_tc3_closure: |
424 | case scm_tc3_tc7_1: | |
425 | case scm_tc3_tc7_2: | |
426 | /* These tc3 tags should never occur in an immediate value. They are | |
427 | * only used in cell types of non-immediates, i. e. the value returned | |
428 | * by SCM_CELL_TYPE (exp) can use these tags. | |
429 | */ | |
430 | scm_ipruk ("immediate", exp, port); | |
431 | break; | |
432 | case scm_tc3_int_1: | |
433 | case scm_tc3_int_2: | |
e11e83f3 | 434 | scm_intprint (SCM_I_INUM (exp), 10, port); |
0f2d19dd | 435 | break; |
e34f941a | 436 | case scm_tc3_imm24: |
7866a09b | 437 | if (SCM_CHARP (exp)) |
0f2d19dd | 438 | { |
e34f941a | 439 | long i = SCM_CHAR (exp); |
77332b21 | 440 | const char *name; |
5ca6dc39 | 441 | |
b7f3516f TT |
442 | if (SCM_WRITINGP (pstate)) |
443 | { | |
444 | scm_puts ("#\\", port); | |
77332b21 MG |
445 | name = scm_i_charname (exp); |
446 | if (name != NULL) | |
447 | scm_puts (name, port); | |
b7f3516f TT |
448 | else if (i < 0 || i > '\177') |
449 | scm_intprint (i, 8, port); | |
450 | else | |
451 | scm_putc (i, port); | |
452 | } | |
453 | else | |
454 | scm_putc (i, port); | |
0f2d19dd | 455 | } |
a51ea417 | 456 | else if (SCM_IFLAGP (exp) |
e17d318f DH |
457 | && ((size_t) SCM_IFLAGNUM (exp) < (sizeof iflagnames / sizeof (char *)))) |
458 | { | |
459 | scm_puts (iflagnames [SCM_IFLAGNUM (exp)], port); | |
460 | } | |
7e6e6b37 | 461 | else if (SCM_ISYMP (exp)) |
e17d318f | 462 | { |
7e6e6b37 | 463 | scm_i_print_isym (exp, port); |
e17d318f | 464 | } |
0f2d19dd JB |
465 | else if (SCM_ILOCP (exp)) |
466 | { | |
7e6e6b37 | 467 | scm_i_print_iloc (exp, port); |
0f2d19dd JB |
468 | } |
469 | else | |
e34f941a DH |
470 | { |
471 | /* unknown immediate value */ | |
472 | scm_ipruk ("immediate", exp, port); | |
473 | } | |
0f2d19dd | 474 | break; |
e34f941a | 475 | case scm_tc3_cons: |
0f2d19dd JB |
476 | switch (SCM_TYP7 (exp)) |
477 | { | |
904a077d MV |
478 | case scm_tcs_struct: |
479 | { | |
480 | ENTER_NESTED_DATA (pstate, exp, circref); | |
481 | if (SCM_OBJ_CLASS_FLAGS (exp) & SCM_CLASSF_GOOPS) | |
482 | { | |
483 | SCM pwps, print = pstate->writingp ? g_write : g_display; | |
484 | if (!print) | |
485 | goto print_struct; | |
dfd03fb9 | 486 | pwps = scm_i_port_with_print_state (port, pstate->handle); |
7663c008 | 487 | pstate->revealed = 1; |
904a077d MV |
488 | scm_call_generic_2 (print, exp, pwps); |
489 | } | |
490 | else | |
491 | { | |
492 | print_struct: | |
493 | scm_print_struct (exp, port, pstate); | |
494 | } | |
495 | EXIT_NESTED_DATA (pstate); | |
496 | } | |
497 | break; | |
0f2d19dd JB |
498 | case scm_tcs_cons_imcar: |
499 | case scm_tcs_cons_nimcar: | |
c62fbfe1 MD |
500 | ENTER_NESTED_DATA (pstate, exp, circref); |
501 | scm_iprlist ("(", exp, ')', port, pstate); | |
502 | EXIT_NESTED_DATA (pstate); | |
a51ea417 MD |
503 | break; |
504 | circref: | |
c62fbfe1 | 505 | print_circref (port, pstate, exp); |
0f2d19dd JB |
506 | break; |
507 | case scm_tcs_closures: | |
7888309b MV |
508 | if (scm_is_false (scm_procedure_p (SCM_PRINT_CLOSURE)) |
509 | || scm_is_false (scm_printer_apply (SCM_PRINT_CLOSURE, | |
77c25af7 | 510 | exp, port, pstate))) |
726d810a DH |
511 | { |
512 | SCM formals = SCM_CLOSURE_FORMALS (exp); | |
513 | scm_puts ("#<procedure", port); | |
514 | scm_putc (' ', port); | |
515 | scm_iprin1 (scm_procedure_name (exp), port, pstate); | |
516 | scm_putc (' ', port); | |
517 | if (SCM_PRINT_SOURCE_P) | |
518 | { | |
519 | SCM env = SCM_ENV (exp); | |
520 | SCM xenv = SCM_EXTEND_ENV (formals, SCM_EOL, env); | |
9fcf3cbb | 521 | SCM src = scm_i_unmemocopy_body (SCM_CODE (exp), xenv); |
726d810a DH |
522 | ENTER_NESTED_DATA (pstate, exp, circref); |
523 | scm_iprin1 (src, port, pstate); | |
524 | EXIT_NESTED_DATA (pstate); | |
525 | } | |
526 | else | |
527 | scm_iprin1 (formals, port, pstate); | |
b7f3516f | 528 | scm_putc ('>', port); |
726d810a | 529 | } |
0f2d19dd | 530 | break; |
534c55a9 DH |
531 | case scm_tc7_number: |
532 | switch SCM_TYP16 (exp) { | |
533 | case scm_tc16_big: | |
534 | scm_bigprint (exp, port, pstate); | |
535 | break; | |
536 | case scm_tc16_real: | |
537 | scm_print_real (exp, port, pstate); | |
538 | break; | |
539 | case scm_tc16_complex: | |
540 | scm_print_complex (exp, port, pstate); | |
541 | break; | |
f92e85f7 MV |
542 | case scm_tc16_fraction: |
543 | scm_i_print_fraction (exp, port, pstate); | |
544 | break; | |
534c55a9 DH |
545 | } |
546 | break; | |
0f2d19dd | 547 | case scm_tc7_string: |
c62fbfe1 | 548 | if (SCM_WRITINGP (pstate)) |
0f2d19dd | 549 | { |
6d92f14f | 550 | size_t i, j, len; |
cc95e00a | 551 | const char *data; |
5ca6dc39 | 552 | |
b7f3516f | 553 | scm_putc ('"', port); |
cc95e00a MV |
554 | len = scm_i_string_length (exp); |
555 | data = scm_i_string_chars (exp); | |
6d92f14f | 556 | for (i = 0, j = 0; i < len; ++i) |
fea8e142 | 557 | { |
cc95e00a | 558 | unsigned char ch = data[i]; |
fea8e142 MV |
559 | if ((ch < 32 && ch != '\n') || (127 <= ch && ch < 148)) |
560 | { | |
561 | static char const hex[]="0123456789abcdef"; | |
6d92f14f MV |
562 | char buf[4]; |
563 | ||
564 | scm_lfwrite (data+j, i-j, port); | |
565 | buf[0] = '\\'; | |
566 | buf[1] = 'x'; | |
567 | buf[2] = hex [ch / 16]; | |
568 | buf[3] = hex [ch % 16]; | |
569 | scm_lfwrite (buf, 4, port); | |
570 | data = scm_i_string_chars (exp); | |
571 | j = i+1; | |
fea8e142 | 572 | } |
6d92f14f | 573 | else if (ch == '"' || ch == '\\') |
fea8e142 | 574 | { |
6d92f14f MV |
575 | scm_lfwrite (data+j, i-j, port); |
576 | scm_putc ('\\', port); | |
577 | data = scm_i_string_chars (exp); | |
578 | j = i; | |
fea8e142 MV |
579 | } |
580 | } | |
6d92f14f | 581 | scm_lfwrite (data+j, i-j, port); |
b7f3516f | 582 | scm_putc ('"', port); |
cc95e00a | 583 | scm_remember_upto_here_1 (exp); |
0f2d19dd JB |
584 | } |
585 | else | |
cc95e00a | 586 | scm_lfwrite (scm_i_string_chars (exp), scm_i_string_length (exp), |
fea8e142 | 587 | port); |
8824ac88 | 588 | scm_remember_upto_here_1 (exp); |
0f2d19dd | 589 | break; |
28b06554 | 590 | case scm_tc7_symbol: |
cc95e00a | 591 | if (scm_i_symbol_is_interned (exp)) |
9ff28a13 | 592 | { |
cc95e00a MV |
593 | scm_print_symbol_name (scm_i_symbol_chars (exp), |
594 | scm_i_symbol_length (exp), | |
9ff28a13 MV |
595 | port); |
596 | scm_remember_upto_here_1 (exp); | |
597 | } | |
598 | else | |
599 | { | |
600 | scm_puts ("#<uninterned-symbol ", port); | |
cc95e00a MV |
601 | scm_print_symbol_name (scm_i_symbol_chars (exp), |
602 | scm_i_symbol_length (exp), | |
9ff28a13 MV |
603 | port); |
604 | scm_putc (' ', port); | |
0345e278 | 605 | scm_uintprint (SCM_UNPACK (exp), 16, port); |
9ff28a13 MV |
606 | scm_putc ('>', port); |
607 | } | |
6662998f | 608 | break; |
e5aca4b5 MV |
609 | case scm_tc7_variable: |
610 | scm_i_variable_print (exp, port, pstate); | |
611 | break; | |
0f2d19dd | 612 | case scm_tc7_wvect: |
c62fbfe1 | 613 | ENTER_NESTED_DATA (pstate, exp, circref); |
0f2d19dd | 614 | if (SCM_IS_WHVEC (exp)) |
b7f3516f | 615 | scm_puts ("#wh(", port); |
0f2d19dd | 616 | else |
b7f3516f | 617 | scm_puts ("#w(", port); |
0f2d19dd JB |
618 | goto common_vector_printer; |
619 | ||
620 | case scm_tc7_vector: | |
c62fbfe1 | 621 | ENTER_NESTED_DATA (pstate, exp, circref); |
b7f3516f | 622 | scm_puts ("#(", port); |
0f2d19dd | 623 | common_vector_printer: |
9fbaf27c | 624 | { |
c014a02e | 625 | register long i; |
4057a3e0 | 626 | long last = SCM_SIMPLE_VECTOR_LENGTH (exp) - 1; |
9fbaf27c | 627 | int cutp = 0; |
4057a3e0 MV |
628 | if (pstate->fancyp |
629 | && SCM_SIMPLE_VECTOR_LENGTH (exp) > pstate->length) | |
9fbaf27c MD |
630 | { |
631 | last = pstate->length - 1; | |
632 | cutp = 1; | |
633 | } | |
634 | for (i = 0; i < last; ++i) | |
635 | { | |
636 | /* CHECK_INTS; */ | |
4057a3e0 | 637 | scm_iprin1 (SCM_SIMPLE_VECTOR_REF (exp, i), port, pstate); |
b7f3516f | 638 | scm_putc (' ', port); |
9fbaf27c MD |
639 | } |
640 | if (i == last) | |
641 | { | |
642 | /* CHECK_INTS; */ | |
4057a3e0 | 643 | scm_iprin1 (SCM_SIMPLE_VECTOR_REF (exp, i), port, pstate); |
9fbaf27c MD |
644 | } |
645 | if (cutp) | |
b7f3516f TT |
646 | scm_puts (" ...", port); |
647 | scm_putc (')', port); | |
9fbaf27c | 648 | } |
c62fbfe1 | 649 | EXIT_NESTED_DATA (pstate); |
0f2d19dd | 650 | break; |
0f2d19dd | 651 | case scm_tcs_subrs: |
f76af603 | 652 | scm_puts (SCM_SUBR_GENERIC (exp) |
9de33deb MD |
653 | ? "#<primitive-generic " |
654 | : "#<primitive-procedure ", | |
655 | port); | |
ce471ab8 | 656 | scm_puts (scm_i_symbol_chars (SCM_SUBR_NAME (exp)), port); |
b7f3516f | 657 | scm_putc ('>', port); |
0f2d19dd | 658 | break; |
e20d7001 | 659 | |
c180dfd3 MD |
660 | case scm_tc7_pws: |
661 | scm_puts ("#<procedure-with-setter", port); | |
662 | { | |
663 | SCM name = scm_procedure_name (exp); | |
7888309b | 664 | if (scm_is_true (name)) |
c180dfd3 MD |
665 | { |
666 | scm_putc (' ', port); | |
b24b5e13 | 667 | scm_display (name, port); |
c180dfd3 MD |
668 | } |
669 | } | |
670 | scm_putc ('>', port); | |
671 | break; | |
0f2d19dd | 672 | case scm_tc7_port: |
5ca6dc39 JB |
673 | { |
674 | register long i = SCM_PTOBNUM (exp); | |
675 | if (i < scm_numptob | |
676 | && scm_ptobs[i].print | |
677 | && (scm_ptobs[i].print) (exp, port, pstate)) | |
a51ea417 | 678 | break; |
5ca6dc39 JB |
679 | goto punk; |
680 | } | |
681 | case scm_tc7_smob: | |
7a7f7c53 DH |
682 | ENTER_NESTED_DATA (pstate, exp, circref); |
683 | SCM_SMOB_DESCRIPTOR (exp).print (exp, port, pstate); | |
684 | EXIT_NESTED_DATA (pstate); | |
685 | break; | |
0f2d19dd | 686 | default: |
a51ea417 MD |
687 | punk: |
688 | scm_ipruk ("type", exp, port); | |
0f2d19dd JB |
689 | } |
690 | } | |
691 | } | |
692 | ||
c62fbfe1 MD |
693 | /* Print states are necessary for circular reference safe printing. |
694 | * They are also expensive to allocate. Therefore print states are | |
695 | * kept in a pool so that they can be reused. | |
696 | */ | |
1cc91f1b | 697 | |
bb35f315 MV |
698 | /* The PORT argument can also be a print-state/port pair, which will |
699 | * then be used instead of allocating a new print state. This is | |
700 | * useful for continuing a chain of print calls from Scheme. */ | |
701 | ||
a51ea417 | 702 | void |
1bbd0b84 | 703 | scm_prin1 (SCM exp, SCM port, int writingp) |
a51ea417 | 704 | { |
c4f37e80 MV |
705 | SCM handle = SCM_BOOL_F; /* Will GC protect the handle whilst unlinked */ |
706 | SCM pstate_scm; | |
c62fbfe1 | 707 | scm_print_state *pstate; |
15635be5 | 708 | int old_writingp; |
c62fbfe1 | 709 | |
bb35f315 MV |
710 | /* If PORT is a print-state/port pair, use that. Else create a new |
711 | print-state. */ | |
c4f37e80 | 712 | |
0c95b57d | 713 | if (SCM_PORT_WITH_PS_P (port)) |
bb35f315 | 714 | { |
52235e71 MD |
715 | pstate_scm = SCM_PORT_WITH_PS_PS (port); |
716 | port = SCM_PORT_WITH_PS_PORT (port); | |
bb35f315 MV |
717 | } |
718 | else | |
c62fbfe1 | 719 | { |
c4f37e80 | 720 | /* First try to allocate a print state from the pool */ |
9de87eea | 721 | scm_i_pthread_mutex_lock (&print_state_mutex); |
d2e53ed6 | 722 | if (!scm_is_null (print_state_pool)) |
c4f37e80 | 723 | { |
d5cf5324 DH |
724 | handle = print_state_pool; |
725 | print_state_pool = SCM_CDR (print_state_pool); | |
c4f37e80 | 726 | } |
9de87eea | 727 | scm_i_pthread_mutex_unlock (&print_state_mutex); |
7888309b | 728 | if (scm_is_false (handle)) |
d5cf5324 | 729 | handle = scm_list_1 (make_print_state ()); |
c4f37e80 | 730 | pstate_scm = SCM_CAR (handle); |
c62fbfe1 | 731 | } |
c62fbfe1 | 732 | |
c4f37e80 | 733 | pstate = SCM_PRINT_STATE (pstate_scm); |
15635be5 | 734 | old_writingp = pstate->writingp; |
c62fbfe1 MD |
735 | pstate->writingp = writingp; |
736 | scm_iprin1 (exp, port, pstate); | |
15635be5 | 737 | pstate->writingp = old_writingp; |
c62fbfe1 | 738 | |
bb35f315 MV |
739 | /* Return print state to pool if it has been created above and |
740 | hasn't escaped to Scheme. */ | |
741 | ||
7888309b | 742 | if (scm_is_true (handle) && !pstate->revealed) |
c4f37e80 | 743 | { |
9de87eea | 744 | scm_i_pthread_mutex_lock (&print_state_mutex); |
d5cf5324 DH |
745 | SCM_SETCDR (handle, print_state_pool); |
746 | print_state_pool = handle; | |
9de87eea | 747 | scm_i_pthread_mutex_unlock (&print_state_mutex); |
c4f37e80 | 748 | } |
a51ea417 MD |
749 | } |
750 | ||
0f2d19dd JB |
751 | |
752 | /* Print an integer. | |
753 | */ | |
1cc91f1b | 754 | |
0f2d19dd | 755 | void |
a406c9e9 | 756 | scm_intprint (scm_t_intmax n, int radix, SCM port) |
0f2d19dd JB |
757 | { |
758 | char num_buf[SCM_INTBUFLEN]; | |
b7f3516f | 759 | scm_lfwrite (num_buf, scm_iint2str (n, radix, num_buf), port); |
0f2d19dd JB |
760 | } |
761 | ||
a406c9e9 MV |
762 | void |
763 | scm_uintprint (scm_t_uintmax n, int radix, SCM port) | |
764 | { | |
765 | char num_buf[SCM_INTBUFLEN]; | |
766 | scm_lfwrite (num_buf, scm_iuint2str (n, radix, num_buf), port); | |
767 | } | |
768 | ||
0f2d19dd JB |
769 | /* Print an object of unrecognized type. |
770 | */ | |
1cc91f1b | 771 | |
0f2d19dd | 772 | void |
1bbd0b84 | 773 | scm_ipruk (char *hdr, SCM ptr, SCM port) |
0f2d19dd | 774 | { |
b7f3516f TT |
775 | scm_puts ("#<unknown-", port); |
776 | scm_puts (hdr, port); | |
c8a1bdc4 | 777 | if (scm_in_heap_p (ptr)) |
0f2d19dd | 778 | { |
b7f3516f | 779 | scm_puts (" (0x", port); |
0345e278 | 780 | scm_uintprint (SCM_CELL_WORD_0 (ptr), 16, port); |
b7f3516f | 781 | scm_puts (" . 0x", port); |
0345e278 | 782 | scm_uintprint (SCM_CELL_WORD_1 (ptr), 16, port); |
b7f3516f | 783 | scm_puts (") @", port); |
0f2d19dd | 784 | } |
b7f3516f | 785 | scm_puts (" 0x", port); |
0345e278 | 786 | scm_uintprint (SCM_UNPACK (ptr), 16, port); |
b7f3516f | 787 | scm_putc ('>', port); |
0f2d19dd JB |
788 | } |
789 | ||
1cc91f1b | 790 | |
904a077d | 791 | /* Print a list. |
22a52da1 | 792 | */ |
0f2d19dd | 793 | void |
34d19ef6 | 794 | scm_iprlist (char *hdr, SCM exp, int tlr, SCM port, scm_print_state *pstate) |
0f2d19dd | 795 | { |
c62fbfe1 | 796 | register SCM hare, tortoise; |
c014a02e | 797 | long floor = pstate->top - 2; |
b7f3516f | 798 | scm_puts (hdr, port); |
0f2d19dd | 799 | /* CHECK_INTS; */ |
c62fbfe1 MD |
800 | if (pstate->fancyp) |
801 | goto fancy_printing; | |
802 | ||
803 | /* Run a hare and tortoise so that total time complexity will be | |
804 | O(depth * N) instead of O(N^2). */ | |
805 | hare = SCM_CDR (exp); | |
806 | tortoise = exp; | |
d2e53ed6 | 807 | while (scm_is_pair (hare)) |
c62fbfe1 | 808 | { |
bc36d050 | 809 | if (scm_is_eq (hare, tortoise)) |
c62fbfe1 MD |
810 | goto fancy_printing; |
811 | hare = SCM_CDR (hare); | |
d2e53ed6 | 812 | if (!scm_is_pair (hare)) |
c62fbfe1 MD |
813 | break; |
814 | hare = SCM_CDR (hare); | |
815 | tortoise = SCM_CDR (tortoise); | |
816 | } | |
817 | ||
818 | /* No cdr cycles intrinsic to this list */ | |
819 | scm_iprin1 (SCM_CAR (exp), port, pstate); | |
d2e53ed6 | 820 | for (exp = SCM_CDR (exp); scm_is_pair (exp); exp = SCM_CDR (exp)) |
0f2d19dd | 821 | { |
c014a02e | 822 | register long i; |
5ca6dc39 | 823 | |
c62fbfe1 | 824 | for (i = floor; i >= 0; --i) |
509759dd | 825 | if (scm_is_eq (PSTATE_STACK_REF(pstate, i), exp)) |
c62fbfe1 MD |
826 | goto circref; |
827 | PUSH_REF (pstate, exp); | |
b7f3516f | 828 | scm_putc (' ', port); |
0f2d19dd | 829 | /* CHECK_INTS; */ |
c62fbfe1 | 830 | scm_iprin1 (SCM_CAR (exp), port, pstate); |
0f2d19dd | 831 | } |
c96d76b8 | 832 | if (!SCM_NULL_OR_NIL_P (exp)) |
0f2d19dd | 833 | { |
b7f3516f | 834 | scm_puts (" . ", port); |
c62fbfe1 | 835 | scm_iprin1 (exp, port, pstate); |
0f2d19dd | 836 | } |
c62fbfe1 | 837 | |
a51ea417 | 838 | end: |
b7f3516f | 839 | scm_putc (tlr, port); |
c62fbfe1 | 840 | pstate->top = floor + 2; |
a51ea417 | 841 | return; |
c62fbfe1 MD |
842 | |
843 | fancy_printing: | |
844 | { | |
c014a02e | 845 | long n = pstate->length; |
c62fbfe1 MD |
846 | |
847 | scm_iprin1 (SCM_CAR (exp), port, pstate); | |
848 | exp = SCM_CDR (exp); --n; | |
d2e53ed6 | 849 | for (; scm_is_pair (exp); exp = SCM_CDR (exp)) |
c62fbfe1 | 850 | { |
c014a02e | 851 | register unsigned long i; |
5ca6dc39 | 852 | |
c62fbfe1 | 853 | for (i = 0; i < pstate->top; ++i) |
509759dd | 854 | if (scm_is_eq (PSTATE_STACK_REF(pstate, i), exp)) |
c62fbfe1 MD |
855 | goto fancy_circref; |
856 | if (pstate->fancyp) | |
857 | { | |
858 | if (n == 0) | |
859 | { | |
b7f3516f | 860 | scm_puts (" ...", port); |
c62fbfe1 MD |
861 | goto skip_tail; |
862 | } | |
863 | else | |
864 | --n; | |
865 | } | |
866 | PUSH_REF(pstate, exp); | |
867 | ++pstate->list_offset; | |
b7f3516f | 868 | scm_putc (' ', port); |
c62fbfe1 MD |
869 | /* CHECK_INTS; */ |
870 | scm_iprin1 (SCM_CAR (exp), port, pstate); | |
871 | } | |
872 | } | |
c96d76b8 | 873 | if (!SCM_NULL_OR_NIL_P (exp)) |
c62fbfe1 | 874 | { |
b7f3516f | 875 | scm_puts (" . ", port); |
c62fbfe1 MD |
876 | scm_iprin1 (exp, port, pstate); |
877 | } | |
878 | skip_tail: | |
879 | pstate->list_offset -= pstate->top - floor - 2; | |
a51ea417 | 880 | goto end; |
a51ea417 | 881 | |
c62fbfe1 MD |
882 | fancy_circref: |
883 | pstate->list_offset -= pstate->top - floor - 2; | |
884 | ||
885 | circref: | |
b7f3516f | 886 | scm_puts (" . ", port); |
c62fbfe1 MD |
887 | print_circref (port, pstate, exp); |
888 | goto end; | |
0f2d19dd JB |
889 | } |
890 | ||
891 | \f | |
892 | ||
bb35f315 MV |
893 | int |
894 | scm_valid_oport_value_p (SCM val) | |
895 | { | |
368cf54d GB |
896 | return (SCM_OPOUTPORTP (val) |
897 | || (SCM_PORT_WITH_PS_P (val) | |
898 | && SCM_OPOUTPORTP (SCM_PORT_WITH_PS_PORT (val)))); | |
bb35f315 MV |
899 | } |
900 | ||
8b840115 | 901 | /* SCM_GPROC(s_write, "write", 1, 1, 0, scm_write, g_write); */ |
1cc91f1b | 902 | |
0f2d19dd | 903 | SCM |
1bbd0b84 | 904 | scm_write (SCM obj, SCM port) |
0f2d19dd JB |
905 | { |
906 | if (SCM_UNBNDP (port)) | |
9de87eea | 907 | port = scm_current_output_port (); |
3eb7e6ee JB |
908 | |
909 | SCM_ASSERT (scm_valid_oport_value_p (port), port, SCM_ARG2, s_write); | |
bb35f315 | 910 | |
a51ea417 | 911 | scm_prin1 (obj, port, 1); |
23d72566 | 912 | #if 0 |
0f2d19dd JB |
913 | #ifdef HAVE_PIPE |
914 | # ifdef EPIPE | |
915 | if (EPIPE == errno) | |
916 | scm_close_port (port); | |
917 | # endif | |
23d72566 | 918 | #endif |
0f2d19dd JB |
919 | #endif |
920 | return SCM_UNSPECIFIED; | |
921 | } | |
922 | ||
923 | ||
8b840115 | 924 | /* SCM_GPROC(s_display, "display", 1, 1, 0, scm_display, g_display); */ |
1cc91f1b | 925 | |
0f2d19dd | 926 | SCM |
1bbd0b84 | 927 | scm_display (SCM obj, SCM port) |
0f2d19dd JB |
928 | { |
929 | if (SCM_UNBNDP (port)) | |
9de87eea | 930 | port = scm_current_output_port (); |
3eb7e6ee JB |
931 | |
932 | SCM_ASSERT (scm_valid_oport_value_p (port), port, SCM_ARG2, s_display); | |
bb35f315 | 933 | |
a51ea417 | 934 | scm_prin1 (obj, port, 0); |
23d72566 | 935 | #if 0 |
0f2d19dd JB |
936 | #ifdef HAVE_PIPE |
937 | # ifdef EPIPE | |
938 | if (EPIPE == errno) | |
939 | scm_close_port (port); | |
940 | # endif | |
23d72566 | 941 | #endif |
0f2d19dd JB |
942 | #endif |
943 | return SCM_UNSPECIFIED; | |
944 | } | |
945 | ||
70d63753 GB |
946 | |
947 | SCM_DEFINE (scm_simple_format, "simple-format", 2, 0, 1, | |
948 | (SCM destination, SCM message, SCM args), | |
eca65e90 MG |
949 | "Write @var{message} to @var{destination}, defaulting to\n" |
950 | "the current output port.\n" | |
951 | "@var{message} can contain @code{~A} (was @code{%s}) and\n" | |
952 | "@code{~S} (was @code{%S}) escapes. When printed,\n" | |
953 | "the escapes are replaced with corresponding members of\n" | |
954 | "@var{ARGS}:\n" | |
955 | "@code{~A} formats using @code{display} and @code{~S} formats\n" | |
956 | "using @code{write}.\n" | |
957 | "If @var{destination} is @code{#t}, then use the current output\n" | |
958 | "port, if @var{destination} is @code{#f}, then return a string\n" | |
959 | "containing the formatted text. Does not add a trailing newline.") | |
70d63753 GB |
960 | #define FUNC_NAME s_scm_simple_format |
961 | { | |
dfd03fb9 | 962 | SCM port, answer = SCM_UNSPECIFIED; |
70d63753 GB |
963 | int fReturnString = 0; |
964 | int writingp; | |
cc95e00a MV |
965 | const char *start; |
966 | const char *end; | |
967 | const char *p; | |
70d63753 | 968 | |
bc36d050 | 969 | if (scm_is_eq (destination, SCM_BOOL_T)) |
daba1a71 | 970 | { |
9de87eea | 971 | destination = port = scm_current_output_port (); |
daba1a71 | 972 | } |
7888309b | 973 | else if (scm_is_false (destination)) |
daba1a71 MD |
974 | { |
975 | fReturnString = 1; | |
dfd03fb9 MD |
976 | port = scm_mkstrport (SCM_INUM0, |
977 | scm_make_string (SCM_INUM0, SCM_UNDEFINED), | |
978 | SCM_OPN | SCM_WRTNG, | |
979 | FUNC_NAME); | |
980 | destination = port; | |
daba1a71 MD |
981 | } |
982 | else | |
983 | { | |
984 | SCM_VALIDATE_OPORT_VALUE (1, destination); | |
dfd03fb9 | 985 | port = SCM_COERCE_OUTPORT (destination); |
daba1a71 MD |
986 | } |
987 | SCM_VALIDATE_STRING (2, message); | |
af45e3b0 | 988 | SCM_VALIDATE_REST_ARGUMENT (args); |
70d63753 | 989 | |
cc95e00a MV |
990 | start = scm_i_string_chars (message); |
991 | end = start + scm_i_string_length (message); | |
b24b5e13 | 992 | for (p = start; p != end; ++p) |
70d63753 GB |
993 | if (*p == '~') |
994 | { | |
b24b5e13 | 995 | if (++p == end) |
6662998f MV |
996 | break; |
997 | ||
998 | switch (*p) | |
999 | { | |
1000 | case 'A': case 'a': | |
1001 | writingp = 0; | |
1002 | break; | |
1003 | case 'S': case 's': | |
1004 | writingp = 1; | |
1005 | break; | |
1006 | case '~': | |
dfd03fb9 | 1007 | scm_lfwrite (start, p - start, port); |
6662998f MV |
1008 | start = p + 1; |
1009 | continue; | |
1010 | case '%': | |
dfd03fb9 MD |
1011 | scm_lfwrite (start, p - start - 1, port); |
1012 | scm_newline (port); | |
6662998f MV |
1013 | start = p + 1; |
1014 | continue; | |
1015 | default: | |
1afff620 KN |
1016 | SCM_MISC_ERROR ("FORMAT: Unsupported format option ~~~A - use (ice-9 format) instead", |
1017 | scm_list_1 (SCM_MAKE_CHAR (*p))); | |
6662998f MV |
1018 | |
1019 | } | |
70d63753 | 1020 | |
6662998f | 1021 | |
d2e53ed6 | 1022 | if (!scm_is_pair (args)) |
1afff620 KN |
1023 | SCM_MISC_ERROR ("FORMAT: Missing argument for ~~~A", |
1024 | scm_list_1 (SCM_MAKE_CHAR (*p))); | |
6662998f | 1025 | |
dfd03fb9 MD |
1026 | scm_lfwrite (start, p - start - 1, port); |
1027 | /* we pass destination here */ | |
70d63753 GB |
1028 | scm_prin1 (SCM_CAR (args), destination, writingp); |
1029 | args = SCM_CDR (args); | |
1030 | start = p + 1; | |
1031 | } | |
6662998f | 1032 | |
dfd03fb9 | 1033 | scm_lfwrite (start, p - start, port); |
bc36d050 | 1034 | if (!scm_is_eq (args, SCM_EOL)) |
1afff620 KN |
1035 | SCM_MISC_ERROR ("FORMAT: ~A superfluous arguments", |
1036 | scm_list_1 (scm_length (args))); | |
70d63753 GB |
1037 | |
1038 | if (fReturnString) | |
1039 | answer = scm_strport_to_string (destination); | |
1040 | ||
daba1a71 | 1041 | return scm_return_first (answer, message); |
70d63753 GB |
1042 | } |
1043 | #undef FUNC_NAME | |
1044 | ||
1045 | ||
3b3b36dd | 1046 | SCM_DEFINE (scm_newline, "newline", 0, 1, 0, |
b450f070 | 1047 | (SCM port), |
8f85c0c6 NJ |
1048 | "Send a newline to @var{port}.\n" |
1049 | "If @var{port} is omitted, send to the current output port.") | |
1bbd0b84 | 1050 | #define FUNC_NAME s_scm_newline |
0f2d19dd JB |
1051 | { |
1052 | if (SCM_UNBNDP (port)) | |
9de87eea | 1053 | port = scm_current_output_port (); |
3eb7e6ee | 1054 | |
34d19ef6 | 1055 | SCM_VALIDATE_OPORT_VALUE (1, port); |
bb35f315 | 1056 | |
0ef4ae82 | 1057 | scm_putc ('\n', SCM_COERCE_OUTPORT (port)); |
0f2d19dd JB |
1058 | return SCM_UNSPECIFIED; |
1059 | } | |
1bbd0b84 | 1060 | #undef FUNC_NAME |
0f2d19dd | 1061 | |
3b3b36dd | 1062 | SCM_DEFINE (scm_write_char, "write-char", 1, 1, 0, |
b450f070 | 1063 | (SCM chr, SCM port), |
eca65e90 | 1064 | "Send character @var{chr} to @var{port}.") |
1bbd0b84 | 1065 | #define FUNC_NAME s_scm_write_char |
0f2d19dd JB |
1066 | { |
1067 | if (SCM_UNBNDP (port)) | |
9de87eea | 1068 | port = scm_current_output_port (); |
3eb7e6ee | 1069 | |
34d19ef6 HWN |
1070 | SCM_VALIDATE_CHAR (1, chr); |
1071 | SCM_VALIDATE_OPORT_VALUE (2, port); | |
bb35f315 | 1072 | |
7866a09b | 1073 | scm_putc ((int) SCM_CHAR (chr), SCM_COERCE_OUTPORT (port)); |
23d72566 | 1074 | #if 0 |
0f2d19dd JB |
1075 | #ifdef HAVE_PIPE |
1076 | # ifdef EPIPE | |
1077 | if (EPIPE == errno) | |
1078 | scm_close_port (port); | |
1079 | # endif | |
23d72566 | 1080 | #endif |
0f2d19dd JB |
1081 | #endif |
1082 | return SCM_UNSPECIFIED; | |
1083 | } | |
1bbd0b84 | 1084 | #undef FUNC_NAME |
0f2d19dd | 1085 | |
0f2d19dd JB |
1086 | \f |
1087 | ||
bb35f315 | 1088 | /* Call back to Scheme code to do the printing of special objects |
c19bc088 MD |
1089 | * (like structs). SCM_PRINTER_APPLY applies PROC to EXP and a smob |
1090 | * containing PORT and PSTATE. This object can be used as the port for | |
1091 | * display/write etc to continue the current print chain. The REVEALED | |
1092 | * field of PSTATE is set to true to indicate that the print state has | |
1093 | * escaped to Scheme and thus has to be freed by the GC. | |
1094 | */ | |
1095 | ||
92c2555f | 1096 | scm_t_bits scm_tc16_port_with_ps; |
c19bc088 MD |
1097 | |
1098 | /* Print exactly as the port itself would */ | |
1099 | ||
1100 | static int | |
e841c3e0 | 1101 | port_with_ps_print (SCM obj, SCM port, scm_print_state *pstate) |
c19bc088 MD |
1102 | { |
1103 | obj = SCM_PORT_WITH_PS_PORT (obj); | |
1104 | return scm_ptobs[SCM_PTOBNUM (obj)].print (obj, port, pstate); | |
1105 | } | |
c4f37e80 MV |
1106 | |
1107 | SCM | |
1bbd0b84 | 1108 | scm_printer_apply (SCM proc, SCM exp, SCM port, scm_print_state *pstate) |
c4f37e80 | 1109 | { |
bb35f315 | 1110 | pstate->revealed = 1; |
dfd03fb9 MD |
1111 | return scm_call_2 (proc, exp, |
1112 | scm_i_port_with_print_state (port, pstate->handle)); | |
c19bc088 MD |
1113 | } |
1114 | ||
dfd03fb9 | 1115 | SCM_DEFINE (scm_port_with_print_state, "port-with-print-state", 1, 1, 0, |
1bbd0b84 | 1116 | (SCM port, SCM pstate), |
71331188 | 1117 | "Create a new port which behaves like @var{port}, but with an\n" |
dfd03fb9 MD |
1118 | "included print state @var{pstate}. @var{pstate} is optional.\n" |
1119 | "If @var{pstate} isn't supplied and @var{port} already has\n" | |
1120 | "a print state, the old print state is reused.") | |
1bbd0b84 | 1121 | #define FUNC_NAME s_scm_port_with_print_state |
c19bc088 | 1122 | { |
34d19ef6 | 1123 | SCM_VALIDATE_OPORT_VALUE (1, port); |
dfd03fb9 MD |
1124 | if (!SCM_UNBNDP (pstate)) |
1125 | SCM_VALIDATE_PRINTSTATE (2, pstate); | |
1126 | return scm_i_port_with_print_state (port, pstate); | |
c19bc088 | 1127 | } |
1bbd0b84 | 1128 | #undef FUNC_NAME |
c19bc088 | 1129 | |
a1ec6916 | 1130 | SCM_DEFINE (scm_get_print_state, "get-print-state", 1, 0, 0, |
1bbd0b84 | 1131 | (SCM port), |
71331188 MG |
1132 | "Return the print state of the port @var{port}. If @var{port}\n" |
1133 | "has no associated print state, @code{#f} is returned.") | |
1bbd0b84 | 1134 | #define FUNC_NAME s_scm_get_print_state |
c19bc088 | 1135 | { |
368cf54d GB |
1136 | if (SCM_PORT_WITH_PS_P (port)) |
1137 | return SCM_PORT_WITH_PS_PS (port); | |
f5f2dcff | 1138 | if (SCM_OUTPUT_PORT_P (port)) |
368cf54d | 1139 | return SCM_BOOL_F; |
276dd677 | 1140 | SCM_WRONG_TYPE_ARG (1, port); |
c4f37e80 | 1141 | } |
1bbd0b84 | 1142 | #undef FUNC_NAME |
bb35f315 | 1143 | |
c4f37e80 | 1144 | \f |
1cc91f1b | 1145 | |
0f2d19dd JB |
1146 | void |
1147 | scm_init_print () | |
0f2d19dd | 1148 | { |
c19bc088 | 1149 | SCM vtable, layout, type; |
d5cf5324 | 1150 | |
62560650 | 1151 | scm_init_opts (scm_print_options, scm_print_opts); |
d5cf5324 | 1152 | |
81ae25da MV |
1153 | scm_print_options (scm_list_4 (scm_from_locale_symbol ("highlight-prefix"), |
1154 | scm_from_locale_string ("{"), | |
1155 | scm_from_locale_symbol ("highlight-suffix"), | |
1156 | scm_from_locale_string ("}"))); | |
1157 | ||
d5cf5324 DH |
1158 | scm_gc_register_root (&print_state_pool); |
1159 | scm_gc_register_root (&scm_print_state_vtable); | |
3ce4544c | 1160 | vtable = scm_make_vtable_vtable (scm_nullstr, SCM_INUM0, SCM_EOL); |
cc95e00a MV |
1161 | layout = |
1162 | scm_make_struct_layout (scm_from_locale_string (SCM_PRINT_STATE_LAYOUT)); | |
1afff620 | 1163 | type = scm_make_struct (vtable, SCM_INUM0, scm_list_1 (layout)); |
cc95e00a | 1164 | scm_set_struct_vtable_name_x (type, scm_from_locale_symbol ("print-state")); |
bb35f315 | 1165 | scm_print_state_vtable = type; |
c4f37e80 | 1166 | |
c19bc088 MD |
1167 | /* Don't want to bind a wrapper class in GOOPS, so pass 0 as arg1. */ |
1168 | scm_tc16_port_with_ps = scm_make_smob_type (0, 0); | |
1169 | scm_set_smob_mark (scm_tc16_port_with_ps, scm_markcdr); | |
e841c3e0 | 1170 | scm_set_smob_print (scm_tc16_port_with_ps, port_with_ps_print); |
81ae25da | 1171 | |
a0599745 | 1172 | #include "libguile/print.x" |
475fa9a5 MV |
1173 | |
1174 | scm_print_opts[SCM_PRINT_KEYWORD_STYLE_I].val = SCM_UNPACK (sym_reader); | |
0f2d19dd | 1175 | } |
89e00824 ML |
1176 | |
1177 | /* | |
1178 | Local Variables: | |
1179 | c-file-style: "gnu" | |
1180 | End: | |
1181 | */ |