Commit | Line | Data |
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4a655e50 | 1 | /* Copyright (C) 1995-1999,2000,2001, 2002, 2003, 2004, 2006, 2008, 2009, 2010, 2011 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 | 32 | #include "libguile/smob.h" |
bbb2ecd1 | 33 | #include "libguile/control.h" |
a0599745 MD |
34 | #include "libguile/eval.h" |
35 | #include "libguile/macros.h" | |
36 | #include "libguile/procprop.h" | |
37 | #include "libguile/read.h" | |
38 | #include "libguile/weaks.h" | |
2fb924f6 | 39 | #include "libguile/programs.h" |
a0599745 MD |
40 | #include "libguile/alist.h" |
41 | #include "libguile/struct.h" | |
a0599745 MD |
42 | #include "libguile/ports.h" |
43 | #include "libguile/root.h" | |
44 | #include "libguile/strings.h" | |
45 | #include "libguile/strports.h" | |
46 | #include "libguile/vectors.h" | |
327967ef | 47 | #include "libguile/numbers.h" |
6f3b0cc2 | 48 | #include "libguile/vm.h" |
a0599745 MD |
49 | |
50 | #include "libguile/validate.h" | |
51 | #include "libguile/print.h" | |
22fc179a HWN |
52 | |
53 | #include "libguile/private-options.h" | |
54 | ||
0f2d19dd JB |
55 | \f |
56 | ||
07f49ac7 LC |
57 | /* Character printers. */ |
58 | ||
59 | static int display_character (scm_t_wchar, SCM, | |
60 | scm_t_string_failed_conversion_handler); | |
61 | static void write_character (scm_t_wchar, SCM, int); | |
62 | ||
63 | \f | |
64 | ||
0f2d19dd JB |
65 | /* {Names of immediate symbols} |
66 | * | |
67 | * This table must agree with the declarations in scm.h: {Immediate Symbols}. | |
68 | */ | |
69 | ||
e17d318f DH |
70 | /* This table must agree with the list of flags in tags.h. */ |
71 | static const char *iflagnames[] = | |
72 | { | |
73 | "#f", | |
45f4cbdf MW |
74 | "#nil", /* Elisp nil value. Should print from elisp as symbol `nil'. */ |
75 | "#<XXX UNUSED LISP FALSE -- DO NOT USE -- SHOULD NEVER BE SEEN XXX>", | |
76 | "()", | |
e17d318f | 77 | "#t", |
f60c2c4e MW |
78 | "#<XXX UNUSED BOOLEAN 0 -- DO NOT USE -- SHOULD NEVER BE SEEN XXX>", |
79 | "#<XXX UNUSED BOOLEAN 1 -- DO NOT USE -- SHOULD NEVER BE SEEN XXX>", | |
80 | "#<XXX UNUSED BOOLEAN 2 -- DO NOT USE -- SHOULD NEVER BE SEEN XXX>", | |
45f4cbdf | 81 | "#<unspecified>", |
e17d318f DH |
82 | "#<undefined>", |
83 | "#<eof>", | |
e17d318f DH |
84 | |
85 | /* Unbound slot marker for GOOPS. For internal use in GOOPS only. */ | |
86 | "#<unbound>", | |
e17d318f DH |
87 | }; |
88 | ||
475fa9a5 MV |
89 | SCM_SYMBOL (sym_reader, "reader"); |
90 | ||
92c2555f | 91 | scm_t_option scm_print_opts[] = { |
3d27ef4b | 92 | { SCM_OPTION_SCM, "highlight-prefix", (scm_t_bits)SCM_BOOL_F, |
81ae25da | 93 | "The string to print before highlighted values." }, |
3d27ef4b | 94 | { SCM_OPTION_SCM, "highlight-suffix", (scm_t_bits)SCM_BOOL_F, |
475fa9a5 | 95 | "The string to print after highlighted values." }, |
3d27ef4b | 96 | { SCM_OPTION_SCM, "quote-keywordish-symbols", (scm_t_bits)SCM_BOOL_F, |
475fa9a5 MV |
97 | "How to print symbols that have a colon as their first or last character. " |
98 | "The value '#f' does not quote the colons; '#t' quotes them; " | |
99 | "'reader' quotes them when the reader option 'keywords' is not '#f'." | |
62560650 HWN |
100 | }, |
101 | { 0 }, | |
e6e4c9af MD |
102 | }; |
103 | ||
a1ec6916 | 104 | SCM_DEFINE (scm_print_options, "print-options-interface", 0, 1, 0, |
1bbd0b84 | 105 | (SCM setting), |
71331188 | 106 | "Option interface for the print options. Instead of using\n" |
1dd05fd8 MG |
107 | "this procedure directly, use the procedures\n" |
108 | "@code{print-enable}, @code{print-disable}, @code{print-set!}\n" | |
109 | "and @code{print-options}.") | |
1bbd0b84 | 110 | #define FUNC_NAME s_scm_print_options |
e6e4c9af | 111 | { |
a51ea417 | 112 | SCM ans = scm_options (setting, |
b7ff98dd | 113 | scm_print_opts, |
1bbd0b84 | 114 | FUNC_NAME); |
e6e4c9af MD |
115 | return ans; |
116 | } | |
1bbd0b84 | 117 | #undef FUNC_NAME |
e6e4c9af | 118 | |
0f2d19dd JB |
119 | \f |
120 | /* {Printing of Scheme Objects} | |
121 | */ | |
122 | ||
a51ea417 | 123 | /* Detection of circular references. |
c62fbfe1 MD |
124 | * |
125 | * Due to other constraints in the implementation, this code has bad | |
5d46ebe3 MD |
126 | * time complexity (O (depth * N)), The printer code can be |
127 | * rewritten to be O(N). | |
a51ea417 | 128 | */ |
dbb5de29 NJ |
129 | #define PUSH_REF(pstate, obj) \ |
130 | do \ | |
131 | { \ | |
132 | PSTATE_STACK_SET (pstate, pstate->top, obj); \ | |
133 | pstate->top++; \ | |
134 | if (pstate->top == pstate->ceiling) \ | |
135 | grow_ref_stack (pstate); \ | |
1bbd0b84 | 136 | } while(0) |
a51ea417 | 137 | |
dbb5de29 NJ |
138 | #define ENTER_NESTED_DATA(pstate, obj, label) \ |
139 | do \ | |
140 | { \ | |
141 | register unsigned long i; \ | |
142 | for (i = 0; i < pstate->top; ++i) \ | |
143 | if (scm_is_eq (PSTATE_STACK_REF (pstate, i), (obj))) \ | |
144 | goto label; \ | |
145 | if (pstate->fancyp) \ | |
146 | { \ | |
147 | if (pstate->top - pstate->list_offset >= pstate->level) \ | |
148 | { \ | |
149 | scm_putc ('#', port); \ | |
150 | return; \ | |
151 | } \ | |
152 | } \ | |
153 | PUSH_REF(pstate, obj); \ | |
1bbd0b84 | 154 | } while(0) |
a51ea417 | 155 | |
dbb5de29 NJ |
156 | #define EXIT_NESTED_DATA(pstate) \ |
157 | do \ | |
158 | { \ | |
159 | --pstate->top; \ | |
160 | PSTATE_STACK_SET (pstate, pstate->top, SCM_UNDEFINED); \ | |
161 | } \ | |
162 | while (0) | |
c62fbfe1 | 163 | |
d5cf5324 DH |
164 | SCM scm_print_state_vtable = SCM_BOOL_F; |
165 | static SCM print_state_pool = SCM_EOL; | |
9de87eea | 166 | scm_i_pthread_mutex_t print_state_mutex = SCM_I_PTHREAD_MUTEX_INITIALIZER; |
c4f37e80 | 167 | |
f843a84c | 168 | #ifdef GUILE_DEBUG /* Used for debugging purposes */ |
1cc91f1b | 169 | |
3b3b36dd | 170 | SCM_DEFINE (scm_current_pstate, "current-pstate", 0, 0, 0, |
1bbd0b84 | 171 | (), |
d5cf5324 | 172 | "Return the current-pstate -- the car of the\n" |
5352393c MG |
173 | "@code{print_state_pool}. @code{current-pstate} is only\n" |
174 | "included in @code{--enable-guile-debug} builds.") | |
1bbd0b84 | 175 | #define FUNC_NAME s_scm_current_pstate |
c62fbfe1 | 176 | { |
d2e53ed6 | 177 | if (!scm_is_null (print_state_pool)) |
d5cf5324 | 178 | return SCM_CAR (print_state_pool); |
a0adfbf0 | 179 | else |
0a284a4e | 180 | return SCM_BOOL_F; |
c62fbfe1 | 181 | } |
1bbd0b84 GB |
182 | #undef FUNC_NAME |
183 | ||
c62fbfe1 MD |
184 | #endif |
185 | ||
186 | #define PSTATE_SIZE 50L | |
187 | ||
698c0295 | 188 | static SCM |
1bbd0b84 | 189 | make_print_state (void) |
698c0295 | 190 | { |
d5cf5324 DH |
191 | SCM print_state |
192 | = scm_make_struct (scm_print_state_vtable, SCM_INUM0, SCM_EOL); | |
bf685b6d | 193 | scm_print_state *pstate = SCM_PRINT_STATE (print_state); |
00ffa0e7 | 194 | pstate->ref_vect = scm_c_make_vector (PSTATE_SIZE, SCM_UNDEFINED); |
4057a3e0 | 195 | pstate->ceiling = SCM_SIMPLE_VECTOR_LENGTH (pstate->ref_vect); |
d232520a | 196 | pstate->highlight_objects = SCM_EOL; |
698c0295 MD |
197 | return print_state; |
198 | } | |
1cc91f1b | 199 | |
c62fbfe1 MD |
200 | SCM |
201 | scm_make_print_state () | |
c62fbfe1 | 202 | { |
230d095f | 203 | SCM answer = SCM_BOOL_F; |
698c0295 MD |
204 | |
205 | /* First try to allocate a print state from the pool */ | |
9de87eea | 206 | scm_i_pthread_mutex_lock (&print_state_mutex); |
d2e53ed6 | 207 | if (!scm_is_null (print_state_pool)) |
698c0295 | 208 | { |
d5cf5324 DH |
209 | answer = SCM_CAR (print_state_pool); |
210 | print_state_pool = SCM_CDR (print_state_pool); | |
698c0295 | 211 | } |
9de87eea | 212 | scm_i_pthread_mutex_unlock (&print_state_mutex); |
698c0295 | 213 | |
7888309b | 214 | return scm_is_false (answer) ? make_print_state () : answer; |
c62fbfe1 | 215 | } |
a51ea417 | 216 | |
698c0295 | 217 | void |
6e8d25a6 | 218 | scm_free_print_state (SCM print_state) |
698c0295 MD |
219 | { |
220 | SCM handle; | |
221 | scm_print_state *pstate = SCM_PRINT_STATE (print_state); | |
222 | /* Cleanup before returning print state to pool. | |
223 | * It is better to do it here. Doing it in scm_prin1 | |
224 | * would cost more since that function is called much more | |
225 | * often. | |
226 | */ | |
227 | pstate->fancyp = 0; | |
bb35f315 | 228 | pstate->revealed = 0; |
d232520a | 229 | pstate->highlight_objects = SCM_EOL; |
9de87eea | 230 | scm_i_pthread_mutex_lock (&print_state_mutex); |
16d4699b | 231 | handle = scm_cons (print_state, print_state_pool); |
d5cf5324 | 232 | print_state_pool = handle; |
9de87eea | 233 | scm_i_pthread_mutex_unlock (&print_state_mutex); |
dfd03fb9 MD |
234 | } |
235 | ||
236 | SCM | |
237 | scm_i_port_with_print_state (SCM port, SCM print_state) | |
238 | { | |
239 | if (SCM_UNBNDP (print_state)) | |
240 | { | |
241 | if (SCM_PORT_WITH_PS_P (port)) | |
242 | return port; | |
243 | else | |
244 | print_state = scm_make_print_state (); | |
245 | /* port does not need to be coerced since it doesn't have ps */ | |
246 | } | |
247 | else | |
248 | port = SCM_COERCE_OUTPORT (port); | |
249 | SCM_RETURN_NEWSMOB (scm_tc16_port_with_ps, | |
250 | SCM_UNPACK (scm_cons (port, print_state))); | |
698c0295 | 251 | } |
1cc91f1b | 252 | |
a51ea417 | 253 | static void |
1bbd0b84 | 254 | grow_ref_stack (scm_print_state *pstate) |
a51ea417 | 255 | { |
4057a3e0 MV |
256 | SCM old_vect = pstate->ref_vect; |
257 | size_t old_size = SCM_SIMPLE_VECTOR_LENGTH (old_vect); | |
258 | size_t new_size = 2 * pstate->ceiling; | |
00ffa0e7 | 259 | SCM new_vect = scm_c_make_vector (new_size, SCM_UNDEFINED); |
b17004b8 DH |
260 | unsigned long int i; |
261 | ||
262 | for (i = 0; i != old_size; ++i) | |
4057a3e0 | 263 | SCM_SIMPLE_VECTOR_SET (new_vect, i, SCM_SIMPLE_VECTOR_REF (old_vect, i)); |
b17004b8 DH |
264 | |
265 | pstate->ref_vect = new_vect; | |
bf685b6d | 266 | pstate->ceiling = new_size; |
a51ea417 MD |
267 | } |
268 | ||
509759dd MV |
269 | #define PSTATE_STACK_REF(p,i) SCM_SIMPLE_VECTOR_REF((p)->ref_vect, (i)) |
270 | #define PSTATE_STACK_SET(p,i,v) SCM_SIMPLE_VECTOR_SET((p)->ref_vect, (i), (v)) | |
1cc91f1b | 271 | |
a51ea417 | 272 | static void |
34d19ef6 | 273 | print_circref (SCM port, scm_print_state *pstate, SCM ref) |
a51ea417 | 274 | { |
c014a02e ML |
275 | register long i; |
276 | long self = pstate->top - 1; | |
c62fbfe1 | 277 | i = pstate->top - 1; |
509759dd | 278 | if (scm_is_pair (PSTATE_STACK_REF (pstate, i))) |
c62fbfe1 MD |
279 | { |
280 | while (i > 0) | |
281 | { | |
509759dd MV |
282 | if (!scm_is_pair (PSTATE_STACK_REF (pstate, i-1)) |
283 | || !scm_is_eq (SCM_CDR (PSTATE_STACK_REF (pstate, i-1)), | |
284 | SCM_CDR (PSTATE_STACK_REF (pstate, i)))) | |
c62fbfe1 MD |
285 | break; |
286 | --i; | |
287 | } | |
288 | self = i; | |
289 | } | |
290 | for (i = pstate->top - 1; 1; --i) | |
509759dd | 291 | if (scm_is_eq (PSTATE_STACK_REF(pstate, i), ref)) |
c62fbfe1 | 292 | break; |
b7f3516f | 293 | scm_putc ('#', port); |
c62fbfe1 | 294 | scm_intprint (i - self, 10, port); |
b7f3516f | 295 | scm_putc ('#', port); |
a51ea417 MD |
296 | } |
297 | ||
6662998f MV |
298 | /* Print the name of a symbol. */ |
299 | ||
475fa9a5 | 300 | static int |
e23106d5 | 301 | quote_keywordish_symbol (SCM symbol) |
475fa9a5 MV |
302 | { |
303 | SCM option; | |
304 | ||
e23106d5 MG |
305 | if (scm_i_symbol_ref (symbol, 0) != ':' |
306 | && scm_i_symbol_ref (symbol, scm_i_symbol_length (symbol) - 1) != ':') | |
475fa9a5 MV |
307 | return 0; |
308 | ||
309 | option = SCM_PRINT_KEYWORD_STYLE; | |
310 | if (scm_is_false (option)) | |
311 | return 0; | |
312 | if (scm_is_eq (option, sym_reader)) | |
313 | return scm_is_true (SCM_PACK (SCM_KEYWORD_STYLE)); | |
314 | return 1; | |
315 | } | |
316 | ||
6662998f | 317 | void |
e23106d5 | 318 | scm_i_print_symbol_name (SCM str, SCM port) |
6662998f | 319 | { |
c6b49e89 MV |
320 | /* This points to the first character that has not yet been written to the |
321 | * port. */ | |
322 | size_t pos = 0; | |
323 | /* This points to the character we're currently looking at. */ | |
6662998f | 324 | size_t end; |
c6b49e89 MV |
325 | /* If the name contains weird characters, we'll escape them with |
326 | * backslashes and set this flag; it indicates that we should surround the | |
327 | * name with "#{" and "}#". */ | |
328 | int weird = 0; | |
329 | /* Backslashes are not sufficient to make a name weird, but if a name is | |
330 | * weird because of other characters, backslahes need to be escaped too. | |
331 | * The first time we see a backslash, we set maybe_weird, and mw_pos points | |
332 | * to the backslash. Then if the name turns out to be weird, we re-process | |
327967ef MV |
333 | * everything starting from mw_pos. |
334 | * We could instead make backslashes always weird. This is not necessary | |
335 | * to ensure that the output is (read)-able, but it would make this code | |
336 | * simpler and faster. */ | |
c6b49e89 | 337 | int maybe_weird = 0; |
6662998f | 338 | size_t mw_pos = 0; |
e23106d5 MG |
339 | size_t len = scm_i_symbol_length (str); |
340 | scm_t_wchar str0 = scm_i_symbol_ref (str, 0); | |
6662998f | 341 | |
e23106d5 MG |
342 | if (len == 0 || str0 == '\'' || str0 == '`' || str0 == ',' |
343 | || quote_keywordish_symbol (str) | |
344 | || (str0 == '.' && len == 1) | |
345 | || scm_is_true (scm_i_string_to_number (scm_symbol_to_string (str), 10))) | |
6662998f MV |
346 | { |
347 | scm_lfwrite ("#{", 2, port); | |
348 | weird = 1; | |
349 | } | |
c6b49e89 | 350 | |
6662998f | 351 | for (end = pos; end < len; ++end) |
e23106d5 | 352 | switch (scm_i_symbol_ref (str, end)) |
6662998f MV |
353 | { |
354 | #ifdef BRACKETS_AS_PARENS | |
355 | case '[': | |
356 | case ']': | |
357 | #endif | |
358 | case '(': | |
359 | case ')': | |
360 | case '"': | |
361 | case ';': | |
c6b49e89 | 362 | case '#': |
6662998f MV |
363 | case SCM_WHITE_SPACES: |
364 | case SCM_LINE_INCREMENTORS: | |
365 | weird_handler: | |
366 | if (maybe_weird) | |
367 | { | |
368 | end = mw_pos; | |
369 | maybe_weird = 0; | |
370 | } | |
371 | if (!weird) | |
372 | { | |
373 | scm_lfwrite ("#{", 2, port); | |
374 | weird = 1; | |
375 | } | |
376 | if (pos < end) | |
e23106d5 | 377 | scm_lfwrite_substr (scm_symbol_to_string (str), pos, end, port); |
6662998f MV |
378 | { |
379 | char buf[2]; | |
380 | buf[0] = '\\'; | |
e23106d5 | 381 | buf[1] = (char) (unsigned char) scm_i_symbol_ref (str, end); |
6662998f MV |
382 | scm_lfwrite (buf, 2, port); |
383 | } | |
384 | pos = end + 1; | |
385 | break; | |
386 | case '\\': | |
387 | if (weird) | |
388 | goto weird_handler; | |
389 | if (!maybe_weird) | |
390 | { | |
391 | maybe_weird = 1; | |
392 | mw_pos = pos; | |
393 | } | |
394 | break; | |
6662998f MV |
395 | default: |
396 | break; | |
397 | } | |
398 | if (pos < end) | |
e23106d5 | 399 | scm_lfwrite_substr (scm_symbol_to_string (str), pos, end, port); |
6662998f MV |
400 | if (weird) |
401 | scm_lfwrite ("}#", 2, port); | |
402 | } | |
403 | ||
e23106d5 MG |
404 | void |
405 | scm_print_symbol_name (const char *str, size_t len, SCM port) | |
406 | { | |
407 | SCM symbol = scm_from_locale_symboln (str, len); | |
ab33782c | 408 | scm_i_print_symbol_name (symbol, port); |
e23106d5 MG |
409 | } |
410 | ||
c62fbfe1 | 411 | /* Print generally. Handles both write and display according to PSTATE. |
0f2d19dd | 412 | */ |
8b840115 MD |
413 | SCM_GPROC(s_write, "write", 1, 1, 0, scm_write, g_write); |
414 | SCM_GPROC(s_display, "display", 1, 1, 0, scm_display, g_display); | |
1cc91f1b | 415 | |
d232520a MV |
416 | static void iprin1 (SCM exp, SCM port, scm_print_state *pstate); |
417 | ||
dea901d6 MG |
418 | |
419 | /* Print a character as an octal or hex escape. */ | |
420 | #define PRINT_CHAR_ESCAPE(i, port) \ | |
421 | do \ | |
422 | { \ | |
423 | if (!SCM_R6RS_ESCAPES_P) \ | |
424 | scm_intprint (i, 8, port); \ | |
425 | else \ | |
426 | { \ | |
427 | scm_puts ("x", port); \ | |
428 | scm_intprint (i, 16, port); \ | |
429 | } \ | |
430 | } \ | |
431 | while (0) | |
432 | ||
433 | ||
0f2d19dd | 434 | void |
1bbd0b84 | 435 | scm_iprin1 (SCM exp, SCM port, scm_print_state *pstate) |
d232520a MV |
436 | { |
437 | if (pstate->fancyp | |
438 | && scm_is_true (scm_memq (exp, pstate->highlight_objects))) | |
439 | { | |
81ae25da | 440 | scm_display (SCM_PRINT_HIGHLIGHT_PREFIX, port); |
d232520a | 441 | iprin1 (exp, port, pstate); |
81ae25da | 442 | scm_display (SCM_PRINT_HIGHLIGHT_SUFFIX, port); |
d232520a MV |
443 | } |
444 | else | |
445 | iprin1 (exp, port, pstate); | |
446 | } | |
447 | ||
448 | static void | |
449 | iprin1 (SCM exp, SCM port, scm_print_state *pstate) | |
0f2d19dd | 450 | { |
54778cd3 | 451 | switch (SCM_ITAG3 (exp)) |
0f2d19dd | 452 | { |
e34f941a DH |
453 | case scm_tc3_tc7_1: |
454 | case scm_tc3_tc7_2: | |
455 | /* These tc3 tags should never occur in an immediate value. They are | |
456 | * only used in cell types of non-immediates, i. e. the value returned | |
457 | * by SCM_CELL_TYPE (exp) can use these tags. | |
458 | */ | |
459 | scm_ipruk ("immediate", exp, port); | |
460 | break; | |
461 | case scm_tc3_int_1: | |
462 | case scm_tc3_int_2: | |
e11e83f3 | 463 | scm_intprint (SCM_I_INUM (exp), 10, port); |
0f2d19dd | 464 | break; |
e34f941a | 465 | case scm_tc3_imm24: |
7866a09b | 466 | if (SCM_CHARP (exp)) |
0f2d19dd | 467 | { |
b7f3516f | 468 | if (SCM_WRITINGP (pstate)) |
07f49ac7 LC |
469 | write_character (SCM_CHAR (exp), port, 0); |
470 | else | |
b7f3516f | 471 | { |
07f49ac7 LC |
472 | if (!display_character (SCM_CHAR (exp), port, |
473 | scm_i_get_conversion_strategy (port))) | |
474 | scm_encoding_error (__func__, errno, | |
475 | "cannot convert to output locale", | |
476 | "UTF-32", scm_i_get_port_encoding (port), | |
477 | scm_string (scm_list_1 (exp))); | |
b7f3516f | 478 | } |
0f2d19dd | 479 | } |
a51ea417 | 480 | else if (SCM_IFLAGP (exp) |
e17d318f DH |
481 | && ((size_t) SCM_IFLAGNUM (exp) < (sizeof iflagnames / sizeof (char *)))) |
482 | { | |
483 | scm_puts (iflagnames [SCM_IFLAGNUM (exp)], port); | |
484 | } | |
0f2d19dd | 485 | else |
e34f941a DH |
486 | { |
487 | /* unknown immediate value */ | |
488 | scm_ipruk ("immediate", exp, port); | |
489 | } | |
0f2d19dd | 490 | break; |
e34f941a | 491 | case scm_tc3_cons: |
0f2d19dd JB |
492 | switch (SCM_TYP7 (exp)) |
493 | { | |
904a077d MV |
494 | case scm_tcs_struct: |
495 | { | |
496 | ENTER_NESTED_DATA (pstate, exp, circref); | |
497 | if (SCM_OBJ_CLASS_FLAGS (exp) & SCM_CLASSF_GOOPS) | |
498 | { | |
499 | SCM pwps, print = pstate->writingp ? g_write : g_display; | |
500 | if (!print) | |
501 | goto print_struct; | |
dfd03fb9 | 502 | pwps = scm_i_port_with_print_state (port, pstate->handle); |
7663c008 | 503 | pstate->revealed = 1; |
904a077d MV |
504 | scm_call_generic_2 (print, exp, pwps); |
505 | } | |
506 | else | |
507 | { | |
508 | print_struct: | |
509 | scm_print_struct (exp, port, pstate); | |
510 | } | |
511 | EXIT_NESTED_DATA (pstate); | |
512 | } | |
513 | break; | |
0f2d19dd JB |
514 | case scm_tcs_cons_imcar: |
515 | case scm_tcs_cons_nimcar: | |
c62fbfe1 MD |
516 | ENTER_NESTED_DATA (pstate, exp, circref); |
517 | scm_iprlist ("(", exp, ')', port, pstate); | |
518 | EXIT_NESTED_DATA (pstate); | |
a51ea417 MD |
519 | break; |
520 | circref: | |
c62fbfe1 | 521 | print_circref (port, pstate, exp); |
0f2d19dd | 522 | break; |
534c55a9 DH |
523 | case scm_tc7_number: |
524 | switch SCM_TYP16 (exp) { | |
525 | case scm_tc16_big: | |
526 | scm_bigprint (exp, port, pstate); | |
527 | break; | |
528 | case scm_tc16_real: | |
529 | scm_print_real (exp, port, pstate); | |
530 | break; | |
531 | case scm_tc16_complex: | |
532 | scm_print_complex (exp, port, pstate); | |
533 | break; | |
f92e85f7 MV |
534 | case scm_tc16_fraction: |
535 | scm_i_print_fraction (exp, port, pstate); | |
536 | break; | |
534c55a9 DH |
537 | } |
538 | break; | |
9c44cd45 MG |
539 | case scm_tc7_string: |
540 | if (SCM_WRITINGP (pstate)) | |
541 | { | |
07f49ac7 | 542 | size_t len, i; |
9c44cd45 MG |
543 | |
544 | scm_putc ('"', port); | |
545 | len = scm_i_string_length (exp); | |
546 | for (i = 0; i < len; ++i) | |
07f49ac7 LC |
547 | write_character (scm_i_string_ref (exp, i), port, 1); |
548 | ||
9c44cd45 MG |
549 | scm_putc ('"', port); |
550 | scm_remember_upto_here_1 (exp); | |
551 | } | |
552 | else | |
6234ff20 | 553 | scm_lfwrite_str (exp, port); |
9c44cd45 MG |
554 | scm_remember_upto_here_1 (exp); |
555 | break; | |
28b06554 | 556 | case scm_tc7_symbol: |
cc95e00a | 557 | if (scm_i_symbol_is_interned (exp)) |
9ff28a13 | 558 | { |
e23106d5 | 559 | scm_i_print_symbol_name (exp, port); |
9ff28a13 MV |
560 | scm_remember_upto_here_1 (exp); |
561 | } | |
562 | else | |
563 | { | |
564 | scm_puts ("#<uninterned-symbol ", port); | |
e23106d5 | 565 | scm_i_print_symbol_name (exp, port); |
9ff28a13 | 566 | scm_putc (' ', port); |
0345e278 | 567 | scm_uintprint (SCM_UNPACK (exp), 16, port); |
9ff28a13 MV |
568 | scm_putc ('>', port); |
569 | } | |
6662998f | 570 | break; |
e5aca4b5 MV |
571 | case scm_tc7_variable: |
572 | scm_i_variable_print (exp, port, pstate); | |
573 | break; | |
2fb924f6 AW |
574 | case scm_tc7_program: |
575 | scm_i_program_print (exp, port, pstate); | |
576 | break; | |
5b46a8c2 LC |
577 | case scm_tc7_pointer: |
578 | scm_i_pointer_print (exp, port, pstate); | |
e2c2a699 | 579 | break; |
c99de5aa AW |
580 | case scm_tc7_hashtable: |
581 | scm_i_hashtable_print (exp, port, pstate); | |
582 | break; | |
9ea31741 AW |
583 | case scm_tc7_fluid: |
584 | scm_i_fluid_print (exp, port, pstate); | |
585 | break; | |
45cf2428 AW |
586 | case scm_tc7_dynamic_state: |
587 | scm_i_dynamic_state_print (exp, port, pstate); | |
588 | break; | |
6f3b0cc2 AW |
589 | case scm_tc7_frame: |
590 | scm_i_frame_print (exp, port, pstate); | |
591 | break; | |
592 | case scm_tc7_objcode: | |
593 | scm_i_objcode_print (exp, port, pstate); | |
594 | break; | |
595 | case scm_tc7_vm: | |
596 | scm_i_vm_print (exp, port, pstate); | |
597 | break; | |
598 | case scm_tc7_vm_cont: | |
599 | scm_i_vm_cont_print (exp, port, pstate); | |
600 | break; | |
bbb2ecd1 AW |
601 | case scm_tc7_prompt: |
602 | scm_i_prompt_print (exp, port, pstate); | |
603 | break; | |
604 | case scm_tc7_with_fluids: | |
605 | scm_i_with_fluids_print (exp, port, pstate); | |
606 | break; | |
0f2d19dd | 607 | case scm_tc7_wvect: |
c62fbfe1 | 608 | ENTER_NESTED_DATA (pstate, exp, circref); |
0f2d19dd | 609 | if (SCM_IS_WHVEC (exp)) |
b7f3516f | 610 | scm_puts ("#wh(", port); |
0f2d19dd | 611 | else |
b7f3516f | 612 | scm_puts ("#w(", port); |
0f2d19dd JB |
613 | goto common_vector_printer; |
614 | ||
807e5a66 LC |
615 | case scm_tc7_bytevector: |
616 | scm_i_print_bytevector (exp, port, pstate); | |
617 | break; | |
0f2d19dd | 618 | case scm_tc7_vector: |
c62fbfe1 | 619 | ENTER_NESTED_DATA (pstate, exp, circref); |
b7f3516f | 620 | scm_puts ("#(", port); |
0f2d19dd | 621 | common_vector_printer: |
9fbaf27c | 622 | { |
c014a02e | 623 | register long i; |
4057a3e0 | 624 | long last = SCM_SIMPLE_VECTOR_LENGTH (exp) - 1; |
9fbaf27c | 625 | int cutp = 0; |
4057a3e0 MV |
626 | if (pstate->fancyp |
627 | && SCM_SIMPLE_VECTOR_LENGTH (exp) > pstate->length) | |
9fbaf27c MD |
628 | { |
629 | last = pstate->length - 1; | |
630 | cutp = 1; | |
631 | } | |
c367c4b4 | 632 | if (SCM_I_WVECTP (exp)) |
9fbaf27c | 633 | { |
c367c4b4 LC |
634 | /* Elements of weak vectors may not be accessed via the |
635 | `SIMPLE_VECTOR_REF ()' macro. */ | |
636 | for (i = 0; i < last; ++i) | |
637 | { | |
638 | scm_iprin1 (scm_c_vector_ref (exp, i), | |
639 | port, pstate); | |
640 | scm_putc (' ', port); | |
641 | } | |
9fbaf27c | 642 | } |
c367c4b4 LC |
643 | else |
644 | { | |
645 | for (i = 0; i < last; ++i) | |
646 | { | |
647 | scm_iprin1 (SCM_SIMPLE_VECTOR_REF (exp, i), port, pstate); | |
648 | scm_putc (' ', port); | |
649 | } | |
650 | } | |
651 | ||
9fbaf27c MD |
652 | if (i == last) |
653 | { | |
654 | /* CHECK_INTS; */ | |
c367c4b4 | 655 | scm_iprin1 (scm_c_vector_ref (exp, i), port, pstate); |
9fbaf27c MD |
656 | } |
657 | if (cutp) | |
b7f3516f TT |
658 | scm_puts (" ...", port); |
659 | scm_putc (')', port); | |
9fbaf27c | 660 | } |
c62fbfe1 | 661 | EXIT_NESTED_DATA (pstate); |
0f2d19dd | 662 | break; |
0f2d19dd | 663 | case scm_tc7_port: |
5ca6dc39 JB |
664 | { |
665 | register long i = SCM_PTOBNUM (exp); | |
666 | if (i < scm_numptob | |
667 | && scm_ptobs[i].print | |
668 | && (scm_ptobs[i].print) (exp, port, pstate)) | |
a51ea417 | 669 | break; |
5ca6dc39 JB |
670 | goto punk; |
671 | } | |
672 | case scm_tc7_smob: | |
7a7f7c53 DH |
673 | ENTER_NESTED_DATA (pstate, exp, circref); |
674 | SCM_SMOB_DESCRIPTOR (exp).print (exp, port, pstate); | |
675 | EXIT_NESTED_DATA (pstate); | |
676 | break; | |
0f2d19dd | 677 | default: |
314b8716 | 678 | /* case scm_tcs_closures: */ |
a51ea417 MD |
679 | punk: |
680 | scm_ipruk ("type", exp, port); | |
0f2d19dd JB |
681 | } |
682 | } | |
683 | } | |
684 | ||
c62fbfe1 MD |
685 | /* Print states are necessary for circular reference safe printing. |
686 | * They are also expensive to allocate. Therefore print states are | |
687 | * kept in a pool so that they can be reused. | |
688 | */ | |
1cc91f1b | 689 | |
bb35f315 MV |
690 | /* The PORT argument can also be a print-state/port pair, which will |
691 | * then be used instead of allocating a new print state. This is | |
692 | * useful for continuing a chain of print calls from Scheme. */ | |
693 | ||
a51ea417 | 694 | void |
1bbd0b84 | 695 | scm_prin1 (SCM exp, SCM port, int writingp) |
a51ea417 | 696 | { |
c4f37e80 MV |
697 | SCM handle = SCM_BOOL_F; /* Will GC protect the handle whilst unlinked */ |
698 | SCM pstate_scm; | |
c62fbfe1 | 699 | scm_print_state *pstate; |
15635be5 | 700 | int old_writingp; |
c62fbfe1 | 701 | |
bb35f315 MV |
702 | /* If PORT is a print-state/port pair, use that. Else create a new |
703 | print-state. */ | |
c4f37e80 | 704 | |
0c95b57d | 705 | if (SCM_PORT_WITH_PS_P (port)) |
bb35f315 | 706 | { |
52235e71 MD |
707 | pstate_scm = SCM_PORT_WITH_PS_PS (port); |
708 | port = SCM_PORT_WITH_PS_PORT (port); | |
bb35f315 MV |
709 | } |
710 | else | |
c62fbfe1 | 711 | { |
c4f37e80 | 712 | /* First try to allocate a print state from the pool */ |
9de87eea | 713 | scm_i_pthread_mutex_lock (&print_state_mutex); |
d2e53ed6 | 714 | if (!scm_is_null (print_state_pool)) |
c4f37e80 | 715 | { |
d5cf5324 DH |
716 | handle = print_state_pool; |
717 | print_state_pool = SCM_CDR (print_state_pool); | |
c4f37e80 | 718 | } |
9de87eea | 719 | scm_i_pthread_mutex_unlock (&print_state_mutex); |
7888309b | 720 | if (scm_is_false (handle)) |
d5cf5324 | 721 | handle = scm_list_1 (make_print_state ()); |
c4f37e80 | 722 | pstate_scm = SCM_CAR (handle); |
c62fbfe1 | 723 | } |
c62fbfe1 | 724 | |
c4f37e80 | 725 | pstate = SCM_PRINT_STATE (pstate_scm); |
15635be5 | 726 | old_writingp = pstate->writingp; |
c62fbfe1 MD |
727 | pstate->writingp = writingp; |
728 | scm_iprin1 (exp, port, pstate); | |
15635be5 | 729 | pstate->writingp = old_writingp; |
c62fbfe1 | 730 | |
bb35f315 MV |
731 | /* Return print state to pool if it has been created above and |
732 | hasn't escaped to Scheme. */ | |
733 | ||
7888309b | 734 | if (scm_is_true (handle) && !pstate->revealed) |
c4f37e80 | 735 | { |
9de87eea | 736 | scm_i_pthread_mutex_lock (&print_state_mutex); |
d5cf5324 DH |
737 | SCM_SETCDR (handle, print_state_pool); |
738 | print_state_pool = handle; | |
9de87eea | 739 | scm_i_pthread_mutex_unlock (&print_state_mutex); |
c4f37e80 | 740 | } |
a51ea417 MD |
741 | } |
742 | ||
07f49ac7 LC |
743 | /* Attempt to display CH to PORT according to STRATEGY. Return non-zero |
744 | if CH was successfully displayed, zero otherwise (e.g., if it was not | |
745 | representable in PORT's encoding.) */ | |
746 | static int | |
747 | display_character (scm_t_wchar ch, SCM port, | |
748 | scm_t_string_failed_conversion_handler strategy) | |
9c44cd45 | 749 | { |
07f49ac7 LC |
750 | int printed; |
751 | const char *encoding; | |
752 | ||
753 | encoding = scm_i_get_port_encoding (port); | |
754 | if (encoding == NULL) | |
755 | { | |
756 | if (ch <= 0xff) | |
757 | { | |
758 | scm_putc (ch, port); | |
759 | printed = 1; | |
760 | } | |
761 | else | |
762 | printed = 0; | |
763 | } | |
764 | else | |
765 | { | |
766 | size_t len; | |
f1ee6d54 | 767 | char locale_encoded[8 * sizeof (ch)], *result; |
07f49ac7 LC |
768 | |
769 | len = sizeof (locale_encoded); | |
770 | result = u32_conv_to_encoding (encoding, strategy, | |
771 | (scm_t_uint32 *) &ch, 1, | |
772 | NULL, locale_encoded, &len); | |
773 | if (result != NULL) | |
774 | { | |
775 | /* CH is graphic; print it. */ | |
776 | ||
777 | if (strategy == SCM_FAILED_CONVERSION_ESCAPE_SEQUENCE) | |
778 | { | |
779 | /* Apply the same escaping syntax as in `write_character'. */ | |
780 | if (SCM_R6RS_ESCAPES_P) | |
f1ee6d54 LC |
781 | { |
782 | /* LOCALE_ENCODED is large enough to store an R6RS | |
783 | `\xNNNN;' escape sequence. However, libunistring | |
784 | up to 0.9.3 (included) always returns a | |
785 | heap-allocated RESULT. */ | |
786 | if (SCM_UNLIKELY (result != locale_encoded)) | |
787 | result = scm_realloc (result, len * 7); | |
788 | ||
789 | scm_i_unistring_escapes_to_r6rs_escapes (result, &len); | |
790 | } | |
07f49ac7 LC |
791 | else |
792 | scm_i_unistring_escapes_to_guile_escapes (result, &len); | |
793 | } | |
9c44cd45 | 794 | |
07f49ac7 LC |
795 | scm_lfwrite (result, len, port); |
796 | printed = 1; | |
797 | ||
798 | if (SCM_UNLIKELY (result != locale_encoded)) | |
799 | free (result); | |
800 | } | |
801 | else | |
802 | printed = 0; | |
803 | } | |
804 | ||
805 | return printed; | |
806 | } | |
807 | ||
33d92fe6 LC |
808 | /* Attempt to pretty-print CH, a combining character, to PORT. Return |
809 | zero upon failure, non-zero otherwise. The idea is to print CH above | |
810 | a dotted circle to make it more visible. */ | |
811 | static int | |
812 | write_combining_character (scm_t_wchar ch, SCM port) | |
813 | { | |
814 | int printed; | |
815 | const char *encoding; | |
816 | ||
817 | encoding = scm_i_get_port_encoding (port); | |
818 | if (encoding != NULL) | |
819 | { | |
820 | scm_t_wchar str[2]; | |
821 | char locale_encoded[sizeof (str)], *result; | |
822 | size_t len; | |
823 | ||
824 | str[0] = SCM_CODEPOINT_DOTTED_CIRCLE; | |
825 | str[1] = ch; | |
826 | ||
827 | len = sizeof (locale_encoded); | |
828 | result = u32_conv_to_encoding (encoding, iconveh_error, | |
829 | (scm_t_uint32 *) str, 2, | |
830 | NULL, locale_encoded, &len); | |
831 | if (result != NULL) | |
832 | { | |
833 | scm_lfwrite (result, len, port); | |
834 | printed = 1; | |
835 | if (SCM_UNLIKELY (result != locale_encoded)) | |
836 | free (result); | |
837 | } | |
838 | else | |
839 | /* Can't write the result to PORT. */ | |
840 | printed = 0; | |
841 | } | |
842 | else | |
843 | /* PORT is Latin-1-encoded and can't display the fancy things. */ | |
844 | printed = 0; | |
845 | ||
846 | return printed; | |
847 | } | |
848 | ||
07f49ac7 LC |
849 | /* Write CH to PORT, escaping it if it's non-graphic or not |
850 | representable in PORT's encoding. If STRING_ESCAPES_P is true and CH | |
851 | needs to be escaped, it is escaped using the in-string escape syntax; | |
852 | otherwise the character escape syntax is used. */ | |
853 | static void | |
854 | write_character (scm_t_wchar ch, SCM port, int string_escapes_p) | |
855 | { | |
856 | int printed = 0; | |
857 | ||
858 | if (string_escapes_p) | |
859 | { | |
860 | /* Check if CH deserves special treatment. */ | |
861 | if (ch == '"' || ch == '\\') | |
862 | { | |
863 | scm_putc ('\\', port); | |
864 | scm_putc (ch, port); | |
865 | printed = 1; | |
866 | } | |
867 | else if (ch == ' ' || ch == '\n') | |
868 | { | |
869 | scm_putc (ch, port); | |
870 | printed = 1; | |
871 | } | |
872 | } | |
873 | else | |
33d92fe6 LC |
874 | { |
875 | scm_puts ("#\\", port); | |
876 | ||
877 | if (uc_combining_class (ch) != UC_CCC_NR) | |
878 | /* Character is a combining character, so attempt to | |
879 | pretty-print it. */ | |
880 | printed = write_combining_character (ch, port); | |
881 | } | |
07f49ac7 LC |
882 | |
883 | if (!printed | |
884 | && uc_is_general_category_withtable (ch, | |
885 | UC_CATEGORY_MASK_L | | |
886 | UC_CATEGORY_MASK_M | | |
887 | UC_CATEGORY_MASK_N | | |
888 | UC_CATEGORY_MASK_P | | |
889 | UC_CATEGORY_MASK_S)) | |
890 | /* CH is graphic; attempt to display it. */ | |
891 | printed = display_character (ch, port, iconveh_error); | |
892 | ||
893 | if (!printed) | |
894 | { | |
895 | /* CH isn't graphic or cannot be represented in PORT's | |
896 | encoding. */ | |
897 | ||
898 | if (string_escapes_p) | |
899 | { | |
900 | /* Represent CH using the in-string escape syntax. */ | |
901 | ||
902 | static const char hex[] = "0123456789abcdef"; | |
c03ef352 | 903 | static const char escapes[7] = "abtnvfr"; |
07f49ac7 LC |
904 | char buf[9]; |
905 | ||
c03ef352 MG |
906 | if (ch >= 0x07 && ch <= 0x0D && ch != 0x0A) |
907 | { | |
908 | /* Use special escapes for some C0 controls. */ | |
909 | buf[0] = '\\'; | |
910 | buf[1] = escapes[ch - 0x07]; | |
911 | scm_lfwrite (buf, 2, port); | |
912 | } | |
913 | else if (!SCM_R6RS_ESCAPES_P) | |
07f49ac7 LC |
914 | { |
915 | if (ch <= 0xFF) | |
916 | { | |
917 | buf[0] = '\\'; | |
918 | buf[1] = 'x'; | |
919 | buf[2] = hex[ch / 16]; | |
920 | buf[3] = hex[ch % 16]; | |
921 | scm_lfwrite (buf, 4, port); | |
922 | } | |
923 | else if (ch <= 0xFFFF) | |
924 | { | |
925 | buf[0] = '\\'; | |
926 | buf[1] = 'u'; | |
927 | buf[2] = hex[(ch & 0xF000) >> 12]; | |
928 | buf[3] = hex[(ch & 0xF00) >> 8]; | |
929 | buf[4] = hex[(ch & 0xF0) >> 4]; | |
930 | buf[5] = hex[(ch & 0xF)]; | |
931 | scm_lfwrite (buf, 6, port); | |
932 | } | |
933 | else if (ch > 0xFFFF) | |
934 | { | |
935 | buf[0] = '\\'; | |
936 | buf[1] = 'U'; | |
937 | buf[2] = hex[(ch & 0xF00000) >> 20]; | |
938 | buf[3] = hex[(ch & 0xF0000) >> 16]; | |
939 | buf[4] = hex[(ch & 0xF000) >> 12]; | |
940 | buf[5] = hex[(ch & 0xF00) >> 8]; | |
941 | buf[6] = hex[(ch & 0xF0) >> 4]; | |
942 | buf[7] = hex[(ch & 0xF)]; | |
943 | scm_lfwrite (buf, 8, port); | |
944 | } | |
945 | } | |
946 | else | |
947 | { | |
948 | /* Print an R6RS variable-length hex escape: "\xNNNN;". */ | |
949 | scm_t_wchar ch2 = ch; | |
950 | ||
951 | int i = 8; | |
952 | buf[i] = ';'; | |
953 | i --; | |
954 | if (ch == 0) | |
955 | buf[i--] = '0'; | |
956 | else | |
957 | while (ch2 > 0) | |
958 | { | |
959 | buf[i] = hex[ch2 & 0xF]; | |
960 | ch2 >>= 4; | |
961 | i --; | |
962 | } | |
963 | buf[i] = 'x'; | |
964 | i --; | |
965 | buf[i] = '\\'; | |
966 | scm_lfwrite (buf + i, 9 - i, port); | |
967 | } | |
968 | } | |
969 | else | |
970 | { | |
971 | /* Represent CH using the character escape syntax. */ | |
972 | const char *name; | |
973 | ||
974 | name = scm_i_charname (SCM_MAKE_CHAR (ch)); | |
975 | if (name != NULL) | |
976 | scm_puts (name, port); | |
977 | else | |
978 | PRINT_CHAR_ESCAPE (ch, port); | |
979 | } | |
980 | } | |
9c44cd45 | 981 | } |
0f2d19dd JB |
982 | |
983 | /* Print an integer. | |
984 | */ | |
1cc91f1b | 985 | |
0f2d19dd | 986 | void |
a406c9e9 | 987 | scm_intprint (scm_t_intmax n, int radix, SCM port) |
0f2d19dd JB |
988 | { |
989 | char num_buf[SCM_INTBUFLEN]; | |
b7f3516f | 990 | scm_lfwrite (num_buf, scm_iint2str (n, radix, num_buf), port); |
0f2d19dd JB |
991 | } |
992 | ||
a406c9e9 MV |
993 | void |
994 | scm_uintprint (scm_t_uintmax n, int radix, SCM port) | |
995 | { | |
996 | char num_buf[SCM_INTBUFLEN]; | |
997 | scm_lfwrite (num_buf, scm_iuint2str (n, radix, num_buf), port); | |
998 | } | |
999 | ||
0f2d19dd JB |
1000 | /* Print an object of unrecognized type. |
1001 | */ | |
1cc91f1b | 1002 | |
0f2d19dd | 1003 | void |
1bbd0b84 | 1004 | scm_ipruk (char *hdr, SCM ptr, SCM port) |
0f2d19dd | 1005 | { |
b7f3516f TT |
1006 | scm_puts ("#<unknown-", port); |
1007 | scm_puts (hdr, port); | |
26224b3f | 1008 | if (1) /* (scm_in_heap_p (ptr)) */ /* FIXME */ |
0f2d19dd | 1009 | { |
b7f3516f | 1010 | scm_puts (" (0x", port); |
0345e278 | 1011 | scm_uintprint (SCM_CELL_WORD_0 (ptr), 16, port); |
b7f3516f | 1012 | scm_puts (" . 0x", port); |
0345e278 | 1013 | scm_uintprint (SCM_CELL_WORD_1 (ptr), 16, port); |
b7f3516f | 1014 | scm_puts (") @", port); |
0f2d19dd | 1015 | } |
b7f3516f | 1016 | scm_puts (" 0x", port); |
0345e278 | 1017 | scm_uintprint (SCM_UNPACK (ptr), 16, port); |
b7f3516f | 1018 | scm_putc ('>', port); |
0f2d19dd JB |
1019 | } |
1020 | ||
1cc91f1b | 1021 | |
904a077d | 1022 | /* Print a list. |
22a52da1 | 1023 | */ |
0f2d19dd | 1024 | void |
34d19ef6 | 1025 | scm_iprlist (char *hdr, SCM exp, int tlr, SCM port, scm_print_state *pstate) |
0f2d19dd | 1026 | { |
c62fbfe1 | 1027 | register SCM hare, tortoise; |
c014a02e | 1028 | long floor = pstate->top - 2; |
b7f3516f | 1029 | scm_puts (hdr, port); |
0f2d19dd | 1030 | /* CHECK_INTS; */ |
c62fbfe1 MD |
1031 | if (pstate->fancyp) |
1032 | goto fancy_printing; | |
1033 | ||
1034 | /* Run a hare and tortoise so that total time complexity will be | |
1035 | O(depth * N) instead of O(N^2). */ | |
1036 | hare = SCM_CDR (exp); | |
1037 | tortoise = exp; | |
d2e53ed6 | 1038 | while (scm_is_pair (hare)) |
c62fbfe1 | 1039 | { |
bc36d050 | 1040 | if (scm_is_eq (hare, tortoise)) |
c62fbfe1 MD |
1041 | goto fancy_printing; |
1042 | hare = SCM_CDR (hare); | |
d2e53ed6 | 1043 | if (!scm_is_pair (hare)) |
c62fbfe1 MD |
1044 | break; |
1045 | hare = SCM_CDR (hare); | |
1046 | tortoise = SCM_CDR (tortoise); | |
1047 | } | |
1048 | ||
1049 | /* No cdr cycles intrinsic to this list */ | |
1050 | scm_iprin1 (SCM_CAR (exp), port, pstate); | |
d2e53ed6 | 1051 | for (exp = SCM_CDR (exp); scm_is_pair (exp); exp = SCM_CDR (exp)) |
0f2d19dd | 1052 | { |
c014a02e | 1053 | register long i; |
5ca6dc39 | 1054 | |
c62fbfe1 | 1055 | for (i = floor; i >= 0; --i) |
509759dd | 1056 | if (scm_is_eq (PSTATE_STACK_REF(pstate, i), exp)) |
c62fbfe1 MD |
1057 | goto circref; |
1058 | PUSH_REF (pstate, exp); | |
b7f3516f | 1059 | scm_putc (' ', port); |
0f2d19dd | 1060 | /* CHECK_INTS; */ |
c62fbfe1 | 1061 | scm_iprin1 (SCM_CAR (exp), port, pstate); |
0f2d19dd | 1062 | } |
c96d76b8 | 1063 | if (!SCM_NULL_OR_NIL_P (exp)) |
0f2d19dd | 1064 | { |
b7f3516f | 1065 | scm_puts (" . ", port); |
c62fbfe1 | 1066 | scm_iprin1 (exp, port, pstate); |
0f2d19dd | 1067 | } |
c62fbfe1 | 1068 | |
a51ea417 | 1069 | end: |
b7f3516f | 1070 | scm_putc (tlr, port); |
c62fbfe1 | 1071 | pstate->top = floor + 2; |
a51ea417 | 1072 | return; |
c62fbfe1 MD |
1073 | |
1074 | fancy_printing: | |
1075 | { | |
c014a02e | 1076 | long n = pstate->length; |
c62fbfe1 MD |
1077 | |
1078 | scm_iprin1 (SCM_CAR (exp), port, pstate); | |
1079 | exp = SCM_CDR (exp); --n; | |
d2e53ed6 | 1080 | for (; scm_is_pair (exp); exp = SCM_CDR (exp)) |
c62fbfe1 | 1081 | { |
c014a02e | 1082 | register unsigned long i; |
5ca6dc39 | 1083 | |
c62fbfe1 | 1084 | for (i = 0; i < pstate->top; ++i) |
509759dd | 1085 | if (scm_is_eq (PSTATE_STACK_REF(pstate, i), exp)) |
c62fbfe1 MD |
1086 | goto fancy_circref; |
1087 | if (pstate->fancyp) | |
1088 | { | |
1089 | if (n == 0) | |
1090 | { | |
b7f3516f | 1091 | scm_puts (" ...", port); |
c62fbfe1 MD |
1092 | goto skip_tail; |
1093 | } | |
1094 | else | |
1095 | --n; | |
1096 | } | |
1097 | PUSH_REF(pstate, exp); | |
1098 | ++pstate->list_offset; | |
b7f3516f | 1099 | scm_putc (' ', port); |
c62fbfe1 MD |
1100 | /* CHECK_INTS; */ |
1101 | scm_iprin1 (SCM_CAR (exp), port, pstate); | |
1102 | } | |
1103 | } | |
c96d76b8 | 1104 | if (!SCM_NULL_OR_NIL_P (exp)) |
c62fbfe1 | 1105 | { |
b7f3516f | 1106 | scm_puts (" . ", port); |
c62fbfe1 MD |
1107 | scm_iprin1 (exp, port, pstate); |
1108 | } | |
1109 | skip_tail: | |
1110 | pstate->list_offset -= pstate->top - floor - 2; | |
a51ea417 | 1111 | goto end; |
a51ea417 | 1112 | |
c62fbfe1 MD |
1113 | fancy_circref: |
1114 | pstate->list_offset -= pstate->top - floor - 2; | |
1115 | ||
1116 | circref: | |
b7f3516f | 1117 | scm_puts (" . ", port); |
c62fbfe1 MD |
1118 | print_circref (port, pstate, exp); |
1119 | goto end; | |
0f2d19dd JB |
1120 | } |
1121 | ||
1122 | \f | |
1123 | ||
bb35f315 MV |
1124 | int |
1125 | scm_valid_oport_value_p (SCM val) | |
1126 | { | |
368cf54d GB |
1127 | return (SCM_OPOUTPORTP (val) |
1128 | || (SCM_PORT_WITH_PS_P (val) | |
1129 | && SCM_OPOUTPORTP (SCM_PORT_WITH_PS_PORT (val)))); | |
bb35f315 MV |
1130 | } |
1131 | ||
8b840115 | 1132 | /* SCM_GPROC(s_write, "write", 1, 1, 0, scm_write, g_write); */ |
1cc91f1b | 1133 | |
0f2d19dd | 1134 | SCM |
1bbd0b84 | 1135 | scm_write (SCM obj, SCM port) |
0f2d19dd JB |
1136 | { |
1137 | if (SCM_UNBNDP (port)) | |
9de87eea | 1138 | port = scm_current_output_port (); |
3eb7e6ee JB |
1139 | |
1140 | SCM_ASSERT (scm_valid_oport_value_p (port), port, SCM_ARG2, s_write); | |
bb35f315 | 1141 | |
a51ea417 | 1142 | scm_prin1 (obj, port, 1); |
0f2d19dd JB |
1143 | return SCM_UNSPECIFIED; |
1144 | } | |
1145 | ||
1146 | ||
8b840115 | 1147 | /* SCM_GPROC(s_display, "display", 1, 1, 0, scm_display, g_display); */ |
1cc91f1b | 1148 | |
0f2d19dd | 1149 | SCM |
1bbd0b84 | 1150 | scm_display (SCM obj, SCM port) |
0f2d19dd JB |
1151 | { |
1152 | if (SCM_UNBNDP (port)) | |
9de87eea | 1153 | port = scm_current_output_port (); |
3eb7e6ee JB |
1154 | |
1155 | SCM_ASSERT (scm_valid_oport_value_p (port), port, SCM_ARG2, s_display); | |
bb35f315 | 1156 | |
a51ea417 | 1157 | scm_prin1 (obj, port, 0); |
0f2d19dd JB |
1158 | return SCM_UNSPECIFIED; |
1159 | } | |
1160 | ||
70d63753 GB |
1161 | |
1162 | SCM_DEFINE (scm_simple_format, "simple-format", 2, 0, 1, | |
1163 | (SCM destination, SCM message, SCM args), | |
eca65e90 MG |
1164 | "Write @var{message} to @var{destination}, defaulting to\n" |
1165 | "the current output port.\n" | |
1166 | "@var{message} can contain @code{~A} (was @code{%s}) and\n" | |
1167 | "@code{~S} (was @code{%S}) escapes. When printed,\n" | |
1168 | "the escapes are replaced with corresponding members of\n" | |
1169 | "@var{ARGS}:\n" | |
1170 | "@code{~A} formats using @code{display} and @code{~S} formats\n" | |
1171 | "using @code{write}.\n" | |
1172 | "If @var{destination} is @code{#t}, then use the current output\n" | |
1173 | "port, if @var{destination} is @code{#f}, then return a string\n" | |
1174 | "containing the formatted text. Does not add a trailing newline.") | |
70d63753 GB |
1175 | #define FUNC_NAME s_scm_simple_format |
1176 | { | |
dfd03fb9 | 1177 | SCM port, answer = SCM_UNSPECIFIED; |
70d63753 GB |
1178 | int fReturnString = 0; |
1179 | int writingp; | |
889975e5 | 1180 | size_t start, p, end; |
70d63753 | 1181 | |
bc36d050 | 1182 | if (scm_is_eq (destination, SCM_BOOL_T)) |
daba1a71 | 1183 | { |
9de87eea | 1184 | destination = port = scm_current_output_port (); |
daba1a71 | 1185 | } |
7888309b | 1186 | else if (scm_is_false (destination)) |
daba1a71 MD |
1187 | { |
1188 | fReturnString = 1; | |
dfd03fb9 MD |
1189 | port = scm_mkstrport (SCM_INUM0, |
1190 | scm_make_string (SCM_INUM0, SCM_UNDEFINED), | |
1191 | SCM_OPN | SCM_WRTNG, | |
1192 | FUNC_NAME); | |
1193 | destination = port; | |
daba1a71 MD |
1194 | } |
1195 | else | |
1196 | { | |
1197 | SCM_VALIDATE_OPORT_VALUE (1, destination); | |
dfd03fb9 | 1198 | port = SCM_COERCE_OUTPORT (destination); |
daba1a71 MD |
1199 | } |
1200 | SCM_VALIDATE_STRING (2, message); | |
af45e3b0 | 1201 | SCM_VALIDATE_REST_ARGUMENT (args); |
70d63753 | 1202 | |
889975e5 MG |
1203 | p = 0; |
1204 | start = 0; | |
1205 | end = scm_i_string_length (message); | |
b24b5e13 | 1206 | for (p = start; p != end; ++p) |
889975e5 | 1207 | if (scm_i_string_ref (message, p) == '~') |
70d63753 | 1208 | { |
b24b5e13 | 1209 | if (++p == end) |
6662998f MV |
1210 | break; |
1211 | ||
889975e5 | 1212 | switch (scm_i_string_ref (message, p)) |
6662998f MV |
1213 | { |
1214 | case 'A': case 'a': | |
1215 | writingp = 0; | |
1216 | break; | |
1217 | case 'S': case 's': | |
1218 | writingp = 1; | |
1219 | break; | |
1220 | case '~': | |
889975e5 | 1221 | scm_lfwrite_substr (message, start, p, port); |
6662998f MV |
1222 | start = p + 1; |
1223 | continue; | |
1224 | case '%': | |
889975e5 | 1225 | scm_lfwrite_substr (message, start, p - 1, port); |
dfd03fb9 | 1226 | scm_newline (port); |
6662998f MV |
1227 | start = p + 1; |
1228 | continue; | |
1229 | default: | |
1afff620 | 1230 | SCM_MISC_ERROR ("FORMAT: Unsupported format option ~~~A - use (ice-9 format) instead", |
889975e5 | 1231 | scm_list_1 (SCM_MAKE_CHAR (scm_i_string_ref (message, p)))); |
6662998f MV |
1232 | |
1233 | } | |
70d63753 | 1234 | |
6662998f | 1235 | |
d2e53ed6 | 1236 | if (!scm_is_pair (args)) |
1afff620 | 1237 | SCM_MISC_ERROR ("FORMAT: Missing argument for ~~~A", |
889975e5 | 1238 | scm_list_1 (SCM_MAKE_CHAR (scm_i_string_ref (message, p)))); |
6662998f | 1239 | |
889975e5 | 1240 | scm_lfwrite_substr (message, start, p - 1, port); |
dfd03fb9 | 1241 | /* we pass destination here */ |
70d63753 GB |
1242 | scm_prin1 (SCM_CAR (args), destination, writingp); |
1243 | args = SCM_CDR (args); | |
1244 | start = p + 1; | |
1245 | } | |
6662998f | 1246 | |
889975e5 | 1247 | scm_lfwrite_substr (message, start, p, port); |
bc36d050 | 1248 | if (!scm_is_eq (args, SCM_EOL)) |
1afff620 KN |
1249 | SCM_MISC_ERROR ("FORMAT: ~A superfluous arguments", |
1250 | scm_list_1 (scm_length (args))); | |
70d63753 GB |
1251 | |
1252 | if (fReturnString) | |
1253 | answer = scm_strport_to_string (destination); | |
1254 | ||
daba1a71 | 1255 | return scm_return_first (answer, message); |
70d63753 GB |
1256 | } |
1257 | #undef FUNC_NAME | |
1258 | ||
1259 | ||
3b3b36dd | 1260 | SCM_DEFINE (scm_newline, "newline", 0, 1, 0, |
b450f070 | 1261 | (SCM port), |
8f85c0c6 NJ |
1262 | "Send a newline to @var{port}.\n" |
1263 | "If @var{port} is omitted, send to the current output port.") | |
1bbd0b84 | 1264 | #define FUNC_NAME s_scm_newline |
0f2d19dd JB |
1265 | { |
1266 | if (SCM_UNBNDP (port)) | |
9de87eea | 1267 | port = scm_current_output_port (); |
3eb7e6ee | 1268 | |
34d19ef6 | 1269 | SCM_VALIDATE_OPORT_VALUE (1, port); |
bb35f315 | 1270 | |
0ef4ae82 | 1271 | scm_putc ('\n', SCM_COERCE_OUTPORT (port)); |
0f2d19dd JB |
1272 | return SCM_UNSPECIFIED; |
1273 | } | |
1bbd0b84 | 1274 | #undef FUNC_NAME |
0f2d19dd | 1275 | |
3b3b36dd | 1276 | SCM_DEFINE (scm_write_char, "write-char", 1, 1, 0, |
b450f070 | 1277 | (SCM chr, SCM port), |
eca65e90 | 1278 | "Send character @var{chr} to @var{port}.") |
1bbd0b84 | 1279 | #define FUNC_NAME s_scm_write_char |
0f2d19dd JB |
1280 | { |
1281 | if (SCM_UNBNDP (port)) | |
9de87eea | 1282 | port = scm_current_output_port (); |
3eb7e6ee | 1283 | |
34d19ef6 HWN |
1284 | SCM_VALIDATE_CHAR (1, chr); |
1285 | SCM_VALIDATE_OPORT_VALUE (2, port); | |
07f49ac7 LC |
1286 | |
1287 | port = SCM_COERCE_OUTPORT (port); | |
1288 | if (!display_character (SCM_CHAR (chr), port, | |
1289 | scm_i_get_conversion_strategy (port))) | |
1290 | scm_encoding_error (__func__, errno, | |
1291 | "cannot convert to output locale", | |
1292 | "UTF-32", scm_i_get_port_encoding (port), | |
1293 | scm_string (scm_list_1 (chr))); | |
1294 | ||
0f2d19dd JB |
1295 | return SCM_UNSPECIFIED; |
1296 | } | |
1bbd0b84 | 1297 | #undef FUNC_NAME |
0f2d19dd | 1298 | |
0f2d19dd JB |
1299 | \f |
1300 | ||
bb35f315 | 1301 | /* Call back to Scheme code to do the printing of special objects |
c19bc088 MD |
1302 | * (like structs). SCM_PRINTER_APPLY applies PROC to EXP and a smob |
1303 | * containing PORT and PSTATE. This object can be used as the port for | |
1304 | * display/write etc to continue the current print chain. The REVEALED | |
1305 | * field of PSTATE is set to true to indicate that the print state has | |
1306 | * escaped to Scheme and thus has to be freed by the GC. | |
1307 | */ | |
1308 | ||
92c2555f | 1309 | scm_t_bits scm_tc16_port_with_ps; |
c19bc088 MD |
1310 | |
1311 | /* Print exactly as the port itself would */ | |
1312 | ||
1313 | static int | |
e841c3e0 | 1314 | port_with_ps_print (SCM obj, SCM port, scm_print_state *pstate) |
c19bc088 MD |
1315 | { |
1316 | obj = SCM_PORT_WITH_PS_PORT (obj); | |
1317 | return scm_ptobs[SCM_PTOBNUM (obj)].print (obj, port, pstate); | |
1318 | } | |
c4f37e80 MV |
1319 | |
1320 | SCM | |
1bbd0b84 | 1321 | scm_printer_apply (SCM proc, SCM exp, SCM port, scm_print_state *pstate) |
c4f37e80 | 1322 | { |
bb35f315 | 1323 | pstate->revealed = 1; |
dfd03fb9 MD |
1324 | return scm_call_2 (proc, exp, |
1325 | scm_i_port_with_print_state (port, pstate->handle)); | |
c19bc088 MD |
1326 | } |
1327 | ||
dfd03fb9 | 1328 | SCM_DEFINE (scm_port_with_print_state, "port-with-print-state", 1, 1, 0, |
1bbd0b84 | 1329 | (SCM port, SCM pstate), |
71331188 | 1330 | "Create a new port which behaves like @var{port}, but with an\n" |
dfd03fb9 MD |
1331 | "included print state @var{pstate}. @var{pstate} is optional.\n" |
1332 | "If @var{pstate} isn't supplied and @var{port} already has\n" | |
1333 | "a print state, the old print state is reused.") | |
1bbd0b84 | 1334 | #define FUNC_NAME s_scm_port_with_print_state |
c19bc088 | 1335 | { |
34d19ef6 | 1336 | SCM_VALIDATE_OPORT_VALUE (1, port); |
dfd03fb9 MD |
1337 | if (!SCM_UNBNDP (pstate)) |
1338 | SCM_VALIDATE_PRINTSTATE (2, pstate); | |
1339 | return scm_i_port_with_print_state (port, pstate); | |
c19bc088 | 1340 | } |
1bbd0b84 | 1341 | #undef FUNC_NAME |
c19bc088 | 1342 | |
a1ec6916 | 1343 | SCM_DEFINE (scm_get_print_state, "get-print-state", 1, 0, 0, |
1bbd0b84 | 1344 | (SCM port), |
71331188 MG |
1345 | "Return the print state of the port @var{port}. If @var{port}\n" |
1346 | "has no associated print state, @code{#f} is returned.") | |
1bbd0b84 | 1347 | #define FUNC_NAME s_scm_get_print_state |
c19bc088 | 1348 | { |
368cf54d GB |
1349 | if (SCM_PORT_WITH_PS_P (port)) |
1350 | return SCM_PORT_WITH_PS_PS (port); | |
f5f2dcff | 1351 | if (SCM_OUTPUT_PORT_P (port)) |
368cf54d | 1352 | return SCM_BOOL_F; |
276dd677 | 1353 | SCM_WRONG_TYPE_ARG (1, port); |
c4f37e80 | 1354 | } |
1bbd0b84 | 1355 | #undef FUNC_NAME |
bb35f315 | 1356 | |
c4f37e80 | 1357 | \f |
1cc91f1b | 1358 | |
0f2d19dd JB |
1359 | void |
1360 | scm_init_print () | |
0f2d19dd | 1361 | { |
c19bc088 | 1362 | SCM vtable, layout, type; |
d5cf5324 | 1363 | |
62560650 | 1364 | scm_init_opts (scm_print_options, scm_print_opts); |
d5cf5324 | 1365 | |
4a655e50 | 1366 | scm_print_options (scm_list_4 (scm_from_latin1_symbol ("highlight-prefix"), |
81ae25da | 1367 | scm_from_locale_string ("{"), |
4a655e50 | 1368 | scm_from_latin1_symbol ("highlight-suffix"), |
81ae25da MV |
1369 | scm_from_locale_string ("}"))); |
1370 | ||
d5cf5324 DH |
1371 | scm_gc_register_root (&print_state_pool); |
1372 | scm_gc_register_root (&scm_print_state_vtable); | |
3ce4544c | 1373 | vtable = scm_make_vtable_vtable (scm_nullstr, SCM_INUM0, SCM_EOL); |
cc95e00a MV |
1374 | layout = |
1375 | scm_make_struct_layout (scm_from_locale_string (SCM_PRINT_STATE_LAYOUT)); | |
1afff620 | 1376 | type = scm_make_struct (vtable, SCM_INUM0, scm_list_1 (layout)); |
4a655e50 | 1377 | scm_set_struct_vtable_name_x (type, scm_from_latin1_symbol ("print-state")); |
bb35f315 | 1378 | scm_print_state_vtable = type; |
c4f37e80 | 1379 | |
c19bc088 MD |
1380 | /* Don't want to bind a wrapper class in GOOPS, so pass 0 as arg1. */ |
1381 | scm_tc16_port_with_ps = scm_make_smob_type (0, 0); | |
e841c3e0 | 1382 | scm_set_smob_print (scm_tc16_port_with_ps, port_with_ps_print); |
81ae25da | 1383 | |
a0599745 | 1384 | #include "libguile/print.x" |
475fa9a5 MV |
1385 | |
1386 | scm_print_opts[SCM_PRINT_KEYWORD_STYLE_I].val = SCM_UNPACK (sym_reader); | |
0f2d19dd | 1387 | } |
89e00824 ML |
1388 | |
1389 | /* | |
1390 | Local Variables: | |
1391 | c-file-style: "gnu" | |
1392 | End: | |
1393 | */ |