Commit | Line | Data |
---|---|---|
f4bc4e59 LC |
1 | /* Copyright (C) 1995-1999, 2000, 2001, 2002, 2003, 2004, 2006, 2008, |
2 | * 2009, 2010, 2011 Free Software Foundation, Inc. | |
3 | * | |
73be1d9e | 4 | * This library is free software; you can redistribute it and/or |
53befeb7 NJ |
5 | * modify it under the terms of the GNU Lesser General Public License |
6 | * as published by the Free Software Foundation; either version 3 of | |
7 | * the License, or (at your option) any later version. | |
0f2d19dd | 8 | * |
53befeb7 NJ |
9 | * This library is distributed in the hope that it will be useful, but |
10 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
73be1d9e MV |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
12 | * Lesser General Public License for more details. | |
0f2d19dd | 13 | * |
73be1d9e MV |
14 | * You should have received a copy of the GNU Lesser General Public |
15 | * License along with this library; if not, write to the Free Software | |
53befeb7 NJ |
16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
17 | * 02110-1301 USA | |
73be1d9e | 18 | */ |
1bbd0b84 | 19 | |
1bbd0b84 | 20 | |
0f2d19dd | 21 | \f |
dbb605f5 LC |
22 | #ifdef HAVE_CONFIG_H |
23 | # include <config.h> | |
24 | #endif | |
0f2d19dd | 25 | |
e6e2e95a | 26 | #include <errno.h> |
f4bc4e59 LC |
27 | #include <iconv.h> |
28 | #include <stdio.h> | |
29 | #include <assert.h> | |
30 | ||
eca29b02 | 31 | #include <uniconv.h> |
904a78f1 | 32 | #include <unictype.h> |
e6e2e95a | 33 | |
a0599745 MD |
34 | #include "libguile/_scm.h" |
35 | #include "libguile/chars.h" | |
a002f1a2 | 36 | #include "libguile/continuations.h" |
a0599745 | 37 | #include "libguile/smob.h" |
bbb2ecd1 | 38 | #include "libguile/control.h" |
a0599745 MD |
39 | #include "libguile/eval.h" |
40 | #include "libguile/macros.h" | |
41 | #include "libguile/procprop.h" | |
42 | #include "libguile/read.h" | |
43 | #include "libguile/weaks.h" | |
2fb924f6 | 44 | #include "libguile/programs.h" |
a0599745 MD |
45 | #include "libguile/alist.h" |
46 | #include "libguile/struct.h" | |
a0599745 MD |
47 | #include "libguile/ports.h" |
48 | #include "libguile/root.h" | |
49 | #include "libguile/strings.h" | |
50 | #include "libguile/strports.h" | |
51 | #include "libguile/vectors.h" | |
327967ef | 52 | #include "libguile/numbers.h" |
6f3b0cc2 | 53 | #include "libguile/vm.h" |
a0599745 MD |
54 | |
55 | #include "libguile/validate.h" | |
56 | #include "libguile/print.h" | |
22fc179a HWN |
57 | |
58 | #include "libguile/private-options.h" | |
59 | ||
0f2d19dd JB |
60 | \f |
61 | ||
07f49ac7 LC |
62 | /* Character printers. */ |
63 | ||
f4bc4e59 LC |
64 | static size_t display_string (const void *, int, size_t, SCM, |
65 | scm_t_string_failed_conversion_handler); | |
66 | ||
07f49ac7 LC |
67 | static int display_character (scm_t_wchar, SCM, |
68 | scm_t_string_failed_conversion_handler); | |
f4bc4e59 | 69 | |
07f49ac7 LC |
70 | static void write_character (scm_t_wchar, SCM, int); |
71 | ||
f4bc4e59 LC |
72 | static void write_character_escaped (scm_t_wchar, int, SCM); |
73 | ||
07f49ac7 LC |
74 | \f |
75 | ||
0f2d19dd JB |
76 | /* {Names of immediate symbols} |
77 | * | |
78 | * This table must agree with the declarations in scm.h: {Immediate Symbols}. | |
79 | */ | |
80 | ||
e17d318f DH |
81 | /* This table must agree with the list of flags in tags.h. */ |
82 | static const char *iflagnames[] = | |
83 | { | |
84 | "#f", | |
45f4cbdf MW |
85 | "#nil", /* Elisp nil value. Should print from elisp as symbol `nil'. */ |
86 | "#<XXX UNUSED LISP FALSE -- DO NOT USE -- SHOULD NEVER BE SEEN XXX>", | |
87 | "()", | |
e17d318f | 88 | "#t", |
f60c2c4e MW |
89 | "#<XXX UNUSED BOOLEAN 0 -- DO NOT USE -- SHOULD NEVER BE SEEN XXX>", |
90 | "#<XXX UNUSED BOOLEAN 1 -- DO NOT USE -- SHOULD NEVER BE SEEN XXX>", | |
91 | "#<XXX UNUSED BOOLEAN 2 -- DO NOT USE -- SHOULD NEVER BE SEEN XXX>", | |
45f4cbdf | 92 | "#<unspecified>", |
e17d318f DH |
93 | "#<undefined>", |
94 | "#<eof>", | |
e17d318f DH |
95 | |
96 | /* Unbound slot marker for GOOPS. For internal use in GOOPS only. */ | |
97 | "#<unbound>", | |
e17d318f DH |
98 | }; |
99 | ||
475fa9a5 MV |
100 | SCM_SYMBOL (sym_reader, "reader"); |
101 | ||
92c2555f | 102 | scm_t_option scm_print_opts[] = { |
3d27ef4b | 103 | { SCM_OPTION_SCM, "highlight-prefix", (scm_t_bits)SCM_BOOL_F, |
81ae25da | 104 | "The string to print before highlighted values." }, |
3d27ef4b | 105 | { SCM_OPTION_SCM, "highlight-suffix", (scm_t_bits)SCM_BOOL_F, |
475fa9a5 | 106 | "The string to print after highlighted values." }, |
3d27ef4b | 107 | { SCM_OPTION_SCM, "quote-keywordish-symbols", (scm_t_bits)SCM_BOOL_F, |
475fa9a5 MV |
108 | "How to print symbols that have a colon as their first or last character. " |
109 | "The value '#f' does not quote the colons; '#t' quotes them; " | |
110 | "'reader' quotes them when the reader option 'keywords' is not '#f'." | |
62560650 HWN |
111 | }, |
112 | { 0 }, | |
e6e4c9af MD |
113 | }; |
114 | ||
a1ec6916 | 115 | SCM_DEFINE (scm_print_options, "print-options-interface", 0, 1, 0, |
1bbd0b84 | 116 | (SCM setting), |
71331188 | 117 | "Option interface for the print options. Instead of using\n" |
1dd05fd8 MG |
118 | "this procedure directly, use the procedures\n" |
119 | "@code{print-enable}, @code{print-disable}, @code{print-set!}\n" | |
120 | "and @code{print-options}.") | |
1bbd0b84 | 121 | #define FUNC_NAME s_scm_print_options |
e6e4c9af | 122 | { |
a51ea417 | 123 | SCM ans = scm_options (setting, |
b7ff98dd | 124 | scm_print_opts, |
1bbd0b84 | 125 | FUNC_NAME); |
e6e4c9af MD |
126 | return ans; |
127 | } | |
1bbd0b84 | 128 | #undef FUNC_NAME |
e6e4c9af | 129 | |
0f2d19dd JB |
130 | \f |
131 | /* {Printing of Scheme Objects} | |
132 | */ | |
133 | ||
a51ea417 | 134 | /* Detection of circular references. |
c62fbfe1 MD |
135 | * |
136 | * Due to other constraints in the implementation, this code has bad | |
5d46ebe3 MD |
137 | * time complexity (O (depth * N)), The printer code can be |
138 | * rewritten to be O(N). | |
a51ea417 | 139 | */ |
dbb5de29 NJ |
140 | #define PUSH_REF(pstate, obj) \ |
141 | do \ | |
142 | { \ | |
143 | PSTATE_STACK_SET (pstate, pstate->top, obj); \ | |
144 | pstate->top++; \ | |
145 | if (pstate->top == pstate->ceiling) \ | |
146 | grow_ref_stack (pstate); \ | |
1bbd0b84 | 147 | } while(0) |
a51ea417 | 148 | |
dbb5de29 NJ |
149 | #define ENTER_NESTED_DATA(pstate, obj, label) \ |
150 | do \ | |
151 | { \ | |
152 | register unsigned long i; \ | |
153 | for (i = 0; i < pstate->top; ++i) \ | |
154 | if (scm_is_eq (PSTATE_STACK_REF (pstate, i), (obj))) \ | |
155 | goto label; \ | |
156 | if (pstate->fancyp) \ | |
157 | { \ | |
158 | if (pstate->top - pstate->list_offset >= pstate->level) \ | |
159 | { \ | |
160 | scm_putc ('#', port); \ | |
161 | return; \ | |
162 | } \ | |
163 | } \ | |
164 | PUSH_REF(pstate, obj); \ | |
1bbd0b84 | 165 | } while(0) |
a51ea417 | 166 | |
dbb5de29 NJ |
167 | #define EXIT_NESTED_DATA(pstate) \ |
168 | do \ | |
169 | { \ | |
170 | --pstate->top; \ | |
171 | PSTATE_STACK_SET (pstate, pstate->top, SCM_UNDEFINED); \ | |
172 | } \ | |
173 | while (0) | |
c62fbfe1 | 174 | |
d5cf5324 DH |
175 | SCM scm_print_state_vtable = SCM_BOOL_F; |
176 | static SCM print_state_pool = SCM_EOL; | |
9de87eea | 177 | scm_i_pthread_mutex_t print_state_mutex = SCM_I_PTHREAD_MUTEX_INITIALIZER; |
c4f37e80 | 178 | |
f843a84c | 179 | #ifdef GUILE_DEBUG /* Used for debugging purposes */ |
1cc91f1b | 180 | |
3b3b36dd | 181 | SCM_DEFINE (scm_current_pstate, "current-pstate", 0, 0, 0, |
1bbd0b84 | 182 | (), |
d5cf5324 | 183 | "Return the current-pstate -- the car of the\n" |
5352393c MG |
184 | "@code{print_state_pool}. @code{current-pstate} is only\n" |
185 | "included in @code{--enable-guile-debug} builds.") | |
1bbd0b84 | 186 | #define FUNC_NAME s_scm_current_pstate |
c62fbfe1 | 187 | { |
d2e53ed6 | 188 | if (!scm_is_null (print_state_pool)) |
d5cf5324 | 189 | return SCM_CAR (print_state_pool); |
a0adfbf0 | 190 | else |
0a284a4e | 191 | return SCM_BOOL_F; |
c62fbfe1 | 192 | } |
1bbd0b84 GB |
193 | #undef FUNC_NAME |
194 | ||
c62fbfe1 MD |
195 | #endif |
196 | ||
197 | #define PSTATE_SIZE 50L | |
198 | ||
698c0295 | 199 | static SCM |
1bbd0b84 | 200 | make_print_state (void) |
698c0295 | 201 | { |
d5cf5324 DH |
202 | SCM print_state |
203 | = scm_make_struct (scm_print_state_vtable, SCM_INUM0, SCM_EOL); | |
bf685b6d | 204 | scm_print_state *pstate = SCM_PRINT_STATE (print_state); |
00ffa0e7 | 205 | pstate->ref_vect = scm_c_make_vector (PSTATE_SIZE, SCM_UNDEFINED); |
4057a3e0 | 206 | pstate->ceiling = SCM_SIMPLE_VECTOR_LENGTH (pstate->ref_vect); |
d232520a | 207 | pstate->highlight_objects = SCM_EOL; |
698c0295 MD |
208 | return print_state; |
209 | } | |
1cc91f1b | 210 | |
c62fbfe1 MD |
211 | SCM |
212 | scm_make_print_state () | |
c62fbfe1 | 213 | { |
230d095f | 214 | SCM answer = SCM_BOOL_F; |
698c0295 MD |
215 | |
216 | /* First try to allocate a print state from the pool */ | |
9de87eea | 217 | scm_i_pthread_mutex_lock (&print_state_mutex); |
d2e53ed6 | 218 | if (!scm_is_null (print_state_pool)) |
698c0295 | 219 | { |
d5cf5324 DH |
220 | answer = SCM_CAR (print_state_pool); |
221 | print_state_pool = SCM_CDR (print_state_pool); | |
698c0295 | 222 | } |
9de87eea | 223 | scm_i_pthread_mutex_unlock (&print_state_mutex); |
698c0295 | 224 | |
7888309b | 225 | return scm_is_false (answer) ? make_print_state () : answer; |
c62fbfe1 | 226 | } |
a51ea417 | 227 | |
698c0295 | 228 | void |
6e8d25a6 | 229 | scm_free_print_state (SCM print_state) |
698c0295 MD |
230 | { |
231 | SCM handle; | |
232 | scm_print_state *pstate = SCM_PRINT_STATE (print_state); | |
233 | /* Cleanup before returning print state to pool. | |
234 | * It is better to do it here. Doing it in scm_prin1 | |
235 | * would cost more since that function is called much more | |
236 | * often. | |
237 | */ | |
238 | pstate->fancyp = 0; | |
bb35f315 | 239 | pstate->revealed = 0; |
d232520a | 240 | pstate->highlight_objects = SCM_EOL; |
9de87eea | 241 | scm_i_pthread_mutex_lock (&print_state_mutex); |
16d4699b | 242 | handle = scm_cons (print_state, print_state_pool); |
d5cf5324 | 243 | print_state_pool = handle; |
9de87eea | 244 | scm_i_pthread_mutex_unlock (&print_state_mutex); |
dfd03fb9 MD |
245 | } |
246 | ||
247 | SCM | |
248 | scm_i_port_with_print_state (SCM port, SCM print_state) | |
249 | { | |
250 | if (SCM_UNBNDP (print_state)) | |
251 | { | |
252 | if (SCM_PORT_WITH_PS_P (port)) | |
253 | return port; | |
254 | else | |
255 | print_state = scm_make_print_state (); | |
256 | /* port does not need to be coerced since it doesn't have ps */ | |
257 | } | |
258 | else | |
259 | port = SCM_COERCE_OUTPORT (port); | |
260 | SCM_RETURN_NEWSMOB (scm_tc16_port_with_ps, | |
261 | SCM_UNPACK (scm_cons (port, print_state))); | |
698c0295 | 262 | } |
1cc91f1b | 263 | |
a51ea417 | 264 | static void |
1bbd0b84 | 265 | grow_ref_stack (scm_print_state *pstate) |
a51ea417 | 266 | { |
4057a3e0 MV |
267 | SCM old_vect = pstate->ref_vect; |
268 | size_t old_size = SCM_SIMPLE_VECTOR_LENGTH (old_vect); | |
269 | size_t new_size = 2 * pstate->ceiling; | |
00ffa0e7 | 270 | SCM new_vect = scm_c_make_vector (new_size, SCM_UNDEFINED); |
b17004b8 DH |
271 | unsigned long int i; |
272 | ||
273 | for (i = 0; i != old_size; ++i) | |
4057a3e0 | 274 | SCM_SIMPLE_VECTOR_SET (new_vect, i, SCM_SIMPLE_VECTOR_REF (old_vect, i)); |
b17004b8 DH |
275 | |
276 | pstate->ref_vect = new_vect; | |
bf685b6d | 277 | pstate->ceiling = new_size; |
a51ea417 MD |
278 | } |
279 | ||
509759dd MV |
280 | #define PSTATE_STACK_REF(p,i) SCM_SIMPLE_VECTOR_REF((p)->ref_vect, (i)) |
281 | #define PSTATE_STACK_SET(p,i,v) SCM_SIMPLE_VECTOR_SET((p)->ref_vect, (i), (v)) | |
1cc91f1b | 282 | |
a51ea417 | 283 | static void |
34d19ef6 | 284 | print_circref (SCM port, scm_print_state *pstate, SCM ref) |
a51ea417 | 285 | { |
c014a02e ML |
286 | register long i; |
287 | long self = pstate->top - 1; | |
c62fbfe1 | 288 | i = pstate->top - 1; |
509759dd | 289 | if (scm_is_pair (PSTATE_STACK_REF (pstate, i))) |
c62fbfe1 MD |
290 | { |
291 | while (i > 0) | |
292 | { | |
509759dd MV |
293 | if (!scm_is_pair (PSTATE_STACK_REF (pstate, i-1)) |
294 | || !scm_is_eq (SCM_CDR (PSTATE_STACK_REF (pstate, i-1)), | |
295 | SCM_CDR (PSTATE_STACK_REF (pstate, i)))) | |
c62fbfe1 MD |
296 | break; |
297 | --i; | |
298 | } | |
299 | self = i; | |
300 | } | |
301 | for (i = pstate->top - 1; 1; --i) | |
509759dd | 302 | if (scm_is_eq (PSTATE_STACK_REF(pstate, i), ref)) |
c62fbfe1 | 303 | break; |
b7f3516f | 304 | scm_putc ('#', port); |
c62fbfe1 | 305 | scm_intprint (i - self, 10, port); |
b7f3516f | 306 | scm_putc ('#', port); |
a51ea417 MD |
307 | } |
308 | ||
6662998f MV |
309 | /* Print the name of a symbol. */ |
310 | ||
475fa9a5 | 311 | static int |
15671c6e | 312 | quote_keywordish_symbols (void) |
475fa9a5 | 313 | { |
15671c6e | 314 | SCM option = SCM_PRINT_KEYWORD_STYLE; |
475fa9a5 | 315 | |
475fa9a5 MV |
316 | if (scm_is_false (option)) |
317 | return 0; | |
318 | if (scm_is_eq (option, sym_reader)) | |
319 | return scm_is_true (SCM_PACK (SCM_KEYWORD_STYLE)); | |
320 | return 1; | |
321 | } | |
322 | ||
15671c6e AW |
323 | static int |
324 | symbol_has_extended_read_syntax (SCM sym) | |
6662998f | 325 | { |
15671c6e AW |
326 | size_t pos, len = scm_i_symbol_length (sym); |
327 | scm_t_wchar c; | |
328 | ||
329 | /* The empty symbol. */ | |
330 | if (len == 0) | |
331 | return 1; | |
332 | ||
333 | c = scm_i_symbol_ref (sym, 0); | |
334 | ||
335 | /* Single dot; conflicts with dotted-pair notation. */ | |
336 | if (len == 1 && c == '.') | |
337 | return 1; | |
338 | ||
339 | /* Other initial-character constraints. */ | |
340 | if (c == '\'' || c == '`' || c == ',') | |
341 | return 1; | |
342 | ||
343 | /* Keywords can be identified by trailing colons too. */ | |
344 | if (c == ':' || scm_i_symbol_ref (sym, len - 1) == ':') | |
345 | return quote_keywordish_symbols (); | |
346 | ||
347 | /* Number-ish symbols. */ | |
348 | if (scm_is_true (scm_i_string_to_number (scm_symbol_to_string (sym), 10))) | |
349 | return 1; | |
350 | ||
351 | /* Otherwise assume everything is fine, unless one of these chars is | |
352 | present. This is incorrect, but it's the way Guile has done it for | |
353 | quite some time. */ | |
354 | for (pos = 0; pos < len; pos++) | |
6662998f | 355 | { |
15671c6e AW |
356 | switch (scm_i_symbol_ref (sym, pos)) |
357 | { | |
358 | #ifdef BRACKETS_AS_PARENS | |
359 | case '[': | |
360 | case ']': | |
361 | #endif | |
362 | case '(': | |
363 | case ')': | |
364 | case '"': | |
365 | case ';': | |
366 | case '#': | |
367 | case SCM_WHITE_SPACES: | |
368 | case SCM_LINE_INCREMENTORS: | |
369 | return 1; | |
370 | default: | |
371 | break; | |
372 | } | |
6662998f | 373 | } |
c6b49e89 | 374 | |
15671c6e AW |
375 | return 0; |
376 | } | |
377 | ||
378 | static void | |
379 | print_normal_symbol (SCM sym, SCM port) | |
380 | { | |
381 | scm_display (scm_symbol_to_string (sym), port); | |
382 | } | |
383 | ||
384 | /* This is not the right logic, because it doesn't do anything special | |
385 | for }# within a symbol, and there is no read logic to handle | |
386 | escapes. We'll fix that in a future patch. */ | |
387 | static void | |
388 | print_extended_symbol (SCM sym, SCM port) | |
389 | { | |
390 | size_t pos, len; | |
391 | scm_t_string_failed_conversion_handler strategy; | |
392 | ||
393 | len = scm_i_symbol_length (sym); | |
394 | strategy = scm_i_get_conversion_strategy (port); | |
395 | ||
396 | scm_lfwrite ("#{", 2, port); | |
397 | ||
398 | for (pos = 0; pos < len; pos++) | |
399 | { | |
400 | scm_t_wchar c = scm_i_symbol_ref (sym, pos); | |
401 | ||
402 | switch (c) | |
403 | { | |
6662998f | 404 | #ifdef BRACKETS_AS_PARENS |
15671c6e AW |
405 | case '[': |
406 | case ']': | |
6662998f | 407 | #endif |
15671c6e AW |
408 | case '(': |
409 | case ')': | |
410 | case '"': | |
411 | case ';': | |
412 | case '#': | |
413 | case SCM_WHITE_SPACES: | |
414 | case SCM_LINE_INCREMENTORS: | |
415 | display_character ('\\', port, iconveh_question_mark); | |
416 | /* fall through */ | |
417 | default: | |
418 | if (!display_character (c, port, strategy)) | |
419 | scm_encoding_error ("print_extended_symbol", errno, | |
420 | "cannot convert to output locale", | |
421 | port, SCM_MAKE_CHAR (c)); | |
422 | break; | |
423 | } | |
424 | } | |
425 | ||
426 | scm_lfwrite ("}#", 2, port); | |
427 | } | |
428 | ||
429 | /* FIXME: allow R6RS hex escapes instead of #{...}#. */ | |
430 | void | |
431 | scm_i_print_symbol_name (SCM sym, SCM port) | |
432 | { | |
433 | if (symbol_has_extended_read_syntax (sym)) | |
434 | print_extended_symbol (sym, port); | |
435 | else | |
436 | print_normal_symbol (sym, port); | |
6662998f MV |
437 | } |
438 | ||
e23106d5 MG |
439 | void |
440 | scm_print_symbol_name (const char *str, size_t len, SCM port) | |
441 | { | |
442 | SCM symbol = scm_from_locale_symboln (str, len); | |
ab33782c | 443 | scm_i_print_symbol_name (symbol, port); |
e23106d5 MG |
444 | } |
445 | ||
c62fbfe1 | 446 | /* Print generally. Handles both write and display according to PSTATE. |
0f2d19dd | 447 | */ |
8b840115 MD |
448 | SCM_GPROC(s_write, "write", 1, 1, 0, scm_write, g_write); |
449 | SCM_GPROC(s_display, "display", 1, 1, 0, scm_display, g_display); | |
1cc91f1b | 450 | |
d232520a MV |
451 | static void iprin1 (SCM exp, SCM port, scm_print_state *pstate); |
452 | ||
dea901d6 MG |
453 | |
454 | /* Print a character as an octal or hex escape. */ | |
455 | #define PRINT_CHAR_ESCAPE(i, port) \ | |
456 | do \ | |
457 | { \ | |
458 | if (!SCM_R6RS_ESCAPES_P) \ | |
459 | scm_intprint (i, 8, port); \ | |
460 | else \ | |
461 | { \ | |
462 | scm_puts ("x", port); \ | |
463 | scm_intprint (i, 16, port); \ | |
464 | } \ | |
465 | } \ | |
466 | while (0) | |
467 | ||
468 | ||
0f2d19dd | 469 | void |
1bbd0b84 | 470 | scm_iprin1 (SCM exp, SCM port, scm_print_state *pstate) |
d232520a MV |
471 | { |
472 | if (pstate->fancyp | |
473 | && scm_is_true (scm_memq (exp, pstate->highlight_objects))) | |
474 | { | |
81ae25da | 475 | scm_display (SCM_PRINT_HIGHLIGHT_PREFIX, port); |
d232520a | 476 | iprin1 (exp, port, pstate); |
81ae25da | 477 | scm_display (SCM_PRINT_HIGHLIGHT_SUFFIX, port); |
d232520a MV |
478 | } |
479 | else | |
480 | iprin1 (exp, port, pstate); | |
481 | } | |
482 | ||
483 | static void | |
484 | iprin1 (SCM exp, SCM port, scm_print_state *pstate) | |
0f2d19dd | 485 | { |
54778cd3 | 486 | switch (SCM_ITAG3 (exp)) |
0f2d19dd | 487 | { |
e34f941a DH |
488 | case scm_tc3_tc7_1: |
489 | case scm_tc3_tc7_2: | |
490 | /* These tc3 tags should never occur in an immediate value. They are | |
491 | * only used in cell types of non-immediates, i. e. the value returned | |
492 | * by SCM_CELL_TYPE (exp) can use these tags. | |
493 | */ | |
494 | scm_ipruk ("immediate", exp, port); | |
495 | break; | |
496 | case scm_tc3_int_1: | |
497 | case scm_tc3_int_2: | |
e11e83f3 | 498 | scm_intprint (SCM_I_INUM (exp), 10, port); |
0f2d19dd | 499 | break; |
e34f941a | 500 | case scm_tc3_imm24: |
7866a09b | 501 | if (SCM_CHARP (exp)) |
0f2d19dd | 502 | { |
b7f3516f | 503 | if (SCM_WRITINGP (pstate)) |
07f49ac7 LC |
504 | write_character (SCM_CHAR (exp), port, 0); |
505 | else | |
b7f3516f | 506 | { |
07f49ac7 LC |
507 | if (!display_character (SCM_CHAR (exp), port, |
508 | scm_i_get_conversion_strategy (port))) | |
509 | scm_encoding_error (__func__, errno, | |
510 | "cannot convert to output locale", | |
6851d3be | 511 | port, exp); |
b7f3516f | 512 | } |
0f2d19dd | 513 | } |
a51ea417 | 514 | else if (SCM_IFLAGP (exp) |
e17d318f DH |
515 | && ((size_t) SCM_IFLAGNUM (exp) < (sizeof iflagnames / sizeof (char *)))) |
516 | { | |
517 | scm_puts (iflagnames [SCM_IFLAGNUM (exp)], port); | |
518 | } | |
0f2d19dd | 519 | else |
e34f941a DH |
520 | { |
521 | /* unknown immediate value */ | |
522 | scm_ipruk ("immediate", exp, port); | |
523 | } | |
0f2d19dd | 524 | break; |
e34f941a | 525 | case scm_tc3_cons: |
0f2d19dd JB |
526 | switch (SCM_TYP7 (exp)) |
527 | { | |
904a077d MV |
528 | case scm_tcs_struct: |
529 | { | |
530 | ENTER_NESTED_DATA (pstate, exp, circref); | |
531 | if (SCM_OBJ_CLASS_FLAGS (exp) & SCM_CLASSF_GOOPS) | |
532 | { | |
533 | SCM pwps, print = pstate->writingp ? g_write : g_display; | |
534 | if (!print) | |
535 | goto print_struct; | |
dfd03fb9 | 536 | pwps = scm_i_port_with_print_state (port, pstate->handle); |
7663c008 | 537 | pstate->revealed = 1; |
904a077d MV |
538 | scm_call_generic_2 (print, exp, pwps); |
539 | } | |
540 | else | |
541 | { | |
542 | print_struct: | |
543 | scm_print_struct (exp, port, pstate); | |
544 | } | |
545 | EXIT_NESTED_DATA (pstate); | |
546 | } | |
547 | break; | |
0f2d19dd JB |
548 | case scm_tcs_cons_imcar: |
549 | case scm_tcs_cons_nimcar: | |
c62fbfe1 MD |
550 | ENTER_NESTED_DATA (pstate, exp, circref); |
551 | scm_iprlist ("(", exp, ')', port, pstate); | |
552 | EXIT_NESTED_DATA (pstate); | |
a51ea417 MD |
553 | break; |
554 | circref: | |
c62fbfe1 | 555 | print_circref (port, pstate, exp); |
0f2d19dd | 556 | break; |
534c55a9 DH |
557 | case scm_tc7_number: |
558 | switch SCM_TYP16 (exp) { | |
559 | case scm_tc16_big: | |
560 | scm_bigprint (exp, port, pstate); | |
561 | break; | |
562 | case scm_tc16_real: | |
563 | scm_print_real (exp, port, pstate); | |
564 | break; | |
565 | case scm_tc16_complex: | |
566 | scm_print_complex (exp, port, pstate); | |
567 | break; | |
f92e85f7 MV |
568 | case scm_tc16_fraction: |
569 | scm_i_print_fraction (exp, port, pstate); | |
570 | break; | |
534c55a9 DH |
571 | } |
572 | break; | |
9c44cd45 MG |
573 | case scm_tc7_string: |
574 | if (SCM_WRITINGP (pstate)) | |
575 | { | |
07f49ac7 | 576 | size_t len, i; |
9c44cd45 | 577 | |
f4bc4e59 | 578 | display_character ('"', port, iconveh_question_mark); |
9c44cd45 MG |
579 | len = scm_i_string_length (exp); |
580 | for (i = 0; i < len; ++i) | |
07f49ac7 LC |
581 | write_character (scm_i_string_ref (exp, i), port, 1); |
582 | ||
f4bc4e59 | 583 | display_character ('"', port, iconveh_question_mark); |
9c44cd45 MG |
584 | scm_remember_upto_here_1 (exp); |
585 | } | |
586 | else | |
f4bc4e59 LC |
587 | { |
588 | size_t len, printed; | |
589 | ||
590 | len = scm_i_string_length (exp); | |
591 | printed = display_string (scm_i_string_data (exp), | |
592 | scm_i_is_narrow_string (exp), | |
593 | len, port, | |
594 | scm_i_get_conversion_strategy (port)); | |
595 | if (SCM_UNLIKELY (printed < len)) | |
f4bc4e59 LC |
596 | scm_encoding_error (__func__, errno, |
597 | "cannot convert to output locale", | |
6851d3be | 598 | port, scm_c_string_ref (exp, printed)); |
f4bc4e59 LC |
599 | } |
600 | ||
9c44cd45 MG |
601 | scm_remember_upto_here_1 (exp); |
602 | break; | |
28b06554 | 603 | case scm_tc7_symbol: |
cc95e00a | 604 | if (scm_i_symbol_is_interned (exp)) |
9ff28a13 | 605 | { |
e23106d5 | 606 | scm_i_print_symbol_name (exp, port); |
9ff28a13 MV |
607 | scm_remember_upto_here_1 (exp); |
608 | } | |
609 | else | |
610 | { | |
611 | scm_puts ("#<uninterned-symbol ", port); | |
e23106d5 | 612 | scm_i_print_symbol_name (exp, port); |
9ff28a13 | 613 | scm_putc (' ', port); |
0345e278 | 614 | scm_uintprint (SCM_UNPACK (exp), 16, port); |
9ff28a13 MV |
615 | scm_putc ('>', port); |
616 | } | |
6662998f | 617 | break; |
e5aca4b5 MV |
618 | case scm_tc7_variable: |
619 | scm_i_variable_print (exp, port, pstate); | |
620 | break; | |
2fb924f6 AW |
621 | case scm_tc7_program: |
622 | scm_i_program_print (exp, port, pstate); | |
623 | break; | |
5b46a8c2 LC |
624 | case scm_tc7_pointer: |
625 | scm_i_pointer_print (exp, port, pstate); | |
e2c2a699 | 626 | break; |
c99de5aa AW |
627 | case scm_tc7_hashtable: |
628 | scm_i_hashtable_print (exp, port, pstate); | |
629 | break; | |
9ea31741 AW |
630 | case scm_tc7_fluid: |
631 | scm_i_fluid_print (exp, port, pstate); | |
632 | break; | |
45cf2428 AW |
633 | case scm_tc7_dynamic_state: |
634 | scm_i_dynamic_state_print (exp, port, pstate); | |
635 | break; | |
6f3b0cc2 AW |
636 | case scm_tc7_frame: |
637 | scm_i_frame_print (exp, port, pstate); | |
638 | break; | |
639 | case scm_tc7_objcode: | |
640 | scm_i_objcode_print (exp, port, pstate); | |
641 | break; | |
642 | case scm_tc7_vm: | |
643 | scm_i_vm_print (exp, port, pstate); | |
644 | break; | |
645 | case scm_tc7_vm_cont: | |
646 | scm_i_vm_cont_print (exp, port, pstate); | |
647 | break; | |
bbb2ecd1 AW |
648 | case scm_tc7_prompt: |
649 | scm_i_prompt_print (exp, port, pstate); | |
650 | break; | |
651 | case scm_tc7_with_fluids: | |
652 | scm_i_with_fluids_print (exp, port, pstate); | |
653 | break; | |
0f2d19dd | 654 | case scm_tc7_wvect: |
c62fbfe1 | 655 | ENTER_NESTED_DATA (pstate, exp, circref); |
0f2d19dd | 656 | if (SCM_IS_WHVEC (exp)) |
b7f3516f | 657 | scm_puts ("#wh(", port); |
0f2d19dd | 658 | else |
b7f3516f | 659 | scm_puts ("#w(", port); |
0f2d19dd JB |
660 | goto common_vector_printer; |
661 | ||
807e5a66 LC |
662 | case scm_tc7_bytevector: |
663 | scm_i_print_bytevector (exp, port, pstate); | |
664 | break; | |
0f2d19dd | 665 | case scm_tc7_vector: |
c62fbfe1 | 666 | ENTER_NESTED_DATA (pstate, exp, circref); |
b7f3516f | 667 | scm_puts ("#(", port); |
0f2d19dd | 668 | common_vector_printer: |
9fbaf27c | 669 | { |
c014a02e | 670 | register long i; |
4057a3e0 | 671 | long last = SCM_SIMPLE_VECTOR_LENGTH (exp) - 1; |
9fbaf27c | 672 | int cutp = 0; |
4057a3e0 MV |
673 | if (pstate->fancyp |
674 | && SCM_SIMPLE_VECTOR_LENGTH (exp) > pstate->length) | |
9fbaf27c MD |
675 | { |
676 | last = pstate->length - 1; | |
677 | cutp = 1; | |
678 | } | |
c367c4b4 | 679 | if (SCM_I_WVECTP (exp)) |
9fbaf27c | 680 | { |
c367c4b4 LC |
681 | /* Elements of weak vectors may not be accessed via the |
682 | `SIMPLE_VECTOR_REF ()' macro. */ | |
683 | for (i = 0; i < last; ++i) | |
684 | { | |
685 | scm_iprin1 (scm_c_vector_ref (exp, i), | |
686 | port, pstate); | |
687 | scm_putc (' ', port); | |
688 | } | |
9fbaf27c | 689 | } |
c367c4b4 LC |
690 | else |
691 | { | |
692 | for (i = 0; i < last; ++i) | |
693 | { | |
694 | scm_iprin1 (SCM_SIMPLE_VECTOR_REF (exp, i), port, pstate); | |
695 | scm_putc (' ', port); | |
696 | } | |
697 | } | |
698 | ||
9fbaf27c MD |
699 | if (i == last) |
700 | { | |
701 | /* CHECK_INTS; */ | |
c367c4b4 | 702 | scm_iprin1 (scm_c_vector_ref (exp, i), port, pstate); |
9fbaf27c MD |
703 | } |
704 | if (cutp) | |
b7f3516f TT |
705 | scm_puts (" ...", port); |
706 | scm_putc (')', port); | |
9fbaf27c | 707 | } |
c62fbfe1 | 708 | EXIT_NESTED_DATA (pstate); |
0f2d19dd | 709 | break; |
0f2d19dd | 710 | case scm_tc7_port: |
5ca6dc39 JB |
711 | { |
712 | register long i = SCM_PTOBNUM (exp); | |
713 | if (i < scm_numptob | |
714 | && scm_ptobs[i].print | |
715 | && (scm_ptobs[i].print) (exp, port, pstate)) | |
a51ea417 | 716 | break; |
5ca6dc39 JB |
717 | goto punk; |
718 | } | |
719 | case scm_tc7_smob: | |
7a7f7c53 DH |
720 | ENTER_NESTED_DATA (pstate, exp, circref); |
721 | SCM_SMOB_DESCRIPTOR (exp).print (exp, port, pstate); | |
722 | EXIT_NESTED_DATA (pstate); | |
723 | break; | |
0f2d19dd | 724 | default: |
314b8716 | 725 | /* case scm_tcs_closures: */ |
a51ea417 MD |
726 | punk: |
727 | scm_ipruk ("type", exp, port); | |
0f2d19dd JB |
728 | } |
729 | } | |
730 | } | |
731 | ||
c62fbfe1 MD |
732 | /* Print states are necessary for circular reference safe printing. |
733 | * They are also expensive to allocate. Therefore print states are | |
734 | * kept in a pool so that they can be reused. | |
735 | */ | |
1cc91f1b | 736 | |
bb35f315 MV |
737 | /* The PORT argument can also be a print-state/port pair, which will |
738 | * then be used instead of allocating a new print state. This is | |
739 | * useful for continuing a chain of print calls from Scheme. */ | |
740 | ||
a51ea417 | 741 | void |
1bbd0b84 | 742 | scm_prin1 (SCM exp, SCM port, int writingp) |
a51ea417 | 743 | { |
c4f37e80 MV |
744 | SCM handle = SCM_BOOL_F; /* Will GC protect the handle whilst unlinked */ |
745 | SCM pstate_scm; | |
c62fbfe1 | 746 | scm_print_state *pstate; |
15635be5 | 747 | int old_writingp; |
c62fbfe1 | 748 | |
bb35f315 MV |
749 | /* If PORT is a print-state/port pair, use that. Else create a new |
750 | print-state. */ | |
c4f37e80 | 751 | |
0c95b57d | 752 | if (SCM_PORT_WITH_PS_P (port)) |
bb35f315 | 753 | { |
52235e71 MD |
754 | pstate_scm = SCM_PORT_WITH_PS_PS (port); |
755 | port = SCM_PORT_WITH_PS_PORT (port); | |
bb35f315 MV |
756 | } |
757 | else | |
c62fbfe1 | 758 | { |
c4f37e80 | 759 | /* First try to allocate a print state from the pool */ |
9de87eea | 760 | scm_i_pthread_mutex_lock (&print_state_mutex); |
d2e53ed6 | 761 | if (!scm_is_null (print_state_pool)) |
c4f37e80 | 762 | { |
d5cf5324 DH |
763 | handle = print_state_pool; |
764 | print_state_pool = SCM_CDR (print_state_pool); | |
c4f37e80 | 765 | } |
9de87eea | 766 | scm_i_pthread_mutex_unlock (&print_state_mutex); |
7888309b | 767 | if (scm_is_false (handle)) |
d5cf5324 | 768 | handle = scm_list_1 (make_print_state ()); |
c4f37e80 | 769 | pstate_scm = SCM_CAR (handle); |
c62fbfe1 | 770 | } |
c62fbfe1 | 771 | |
c4f37e80 | 772 | pstate = SCM_PRINT_STATE (pstate_scm); |
15635be5 | 773 | old_writingp = pstate->writingp; |
c62fbfe1 MD |
774 | pstate->writingp = writingp; |
775 | scm_iprin1 (exp, port, pstate); | |
15635be5 | 776 | pstate->writingp = old_writingp; |
c62fbfe1 | 777 | |
bb35f315 MV |
778 | /* Return print state to pool if it has been created above and |
779 | hasn't escaped to Scheme. */ | |
780 | ||
7888309b | 781 | if (scm_is_true (handle) && !pstate->revealed) |
c4f37e80 | 782 | { |
9de87eea | 783 | scm_i_pthread_mutex_lock (&print_state_mutex); |
d5cf5324 DH |
784 | SCM_SETCDR (handle, print_state_pool); |
785 | print_state_pool = handle; | |
9de87eea | 786 | scm_i_pthread_mutex_unlock (&print_state_mutex); |
c4f37e80 | 787 | } |
a51ea417 MD |
788 | } |
789 | ||
f4bc4e59 LC |
790 | /* Convert codepoint CH to UTF-8 and store the result in UTF8. Return |
791 | the number of bytes of the UTF-8-encoded string. */ | |
792 | static size_t | |
793 | codepoint_to_utf8 (scm_t_wchar ch, scm_t_uint8 utf8[4]) | |
9c44cd45 | 794 | { |
f4bc4e59 LC |
795 | size_t len; |
796 | scm_t_uint32 codepoint; | |
797 | ||
798 | codepoint = (scm_t_uint32) ch; | |
07f49ac7 | 799 | |
f4bc4e59 | 800 | if (codepoint <= 0x7f) |
07f49ac7 | 801 | { |
f4bc4e59 LC |
802 | len = 1; |
803 | utf8[0] = (scm_t_uint8) codepoint; | |
804 | } | |
805 | else if (codepoint <= 0x7ffUL) | |
806 | { | |
807 | len = 2; | |
808 | utf8[0] = 0xc0 | (codepoint >> 6); | |
809 | utf8[1] = 0x80 | (codepoint & 0x3f); | |
810 | } | |
811 | else if (codepoint <= 0xffffUL) | |
812 | { | |
813 | len = 3; | |
814 | utf8[0] = 0xe0 | (codepoint >> 12); | |
815 | utf8[1] = 0x80 | ((codepoint >> 6) & 0x3f); | |
816 | utf8[2] = 0x80 | (codepoint & 0x3f); | |
07f49ac7 LC |
817 | } |
818 | else | |
819 | { | |
f4bc4e59 LC |
820 | len = 4; |
821 | utf8[0] = 0xf0 | (codepoint >> 18); | |
822 | utf8[1] = 0x80 | ((codepoint >> 12) & 0x3f); | |
823 | utf8[2] = 0x80 | ((codepoint >> 6) & 0x3f); | |
824 | utf8[3] = 0x80 | (codepoint & 0x3f); | |
825 | } | |
826 | ||
827 | return len; | |
828 | } | |
829 | ||
830 | /* Display the LEN codepoints in STR to PORT according to STRATEGY; | |
831 | return the number of codepoints successfully displayed. If NARROW_P, | |
832 | then STR is interpreted as a sequence of `char', denoting a Latin-1 | |
833 | string; otherwise it's interpreted as a sequence of | |
834 | `scm_t_wchar'. */ | |
835 | static size_t | |
836 | display_string (const void *str, int narrow_p, | |
837 | size_t len, SCM port, | |
838 | scm_t_string_failed_conversion_handler strategy) | |
839 | ||
840 | { | |
841 | #define STR_REF(s, x) \ | |
842 | (narrow_p \ | |
843 | ? (scm_t_wchar) ((unsigned char *) (s))[x] \ | |
844 | : ((scm_t_wchar *) (s))[x]) | |
845 | ||
846 | size_t printed; | |
847 | scm_t_port *pt; | |
848 | ||
849 | pt = SCM_PTAB_ENTRY (port); | |
850 | ||
851 | if (SCM_UNLIKELY (pt->output_cd == (iconv_t) -1)) | |
852 | /* Initialize the conversion descriptors. */ | |
853 | scm_i_set_port_encoding_x (port, pt->encoding); | |
854 | ||
855 | printed = 0; | |
856 | ||
857 | while (len > printed) | |
858 | { | |
859 | size_t done, utf8_len, input_left, output_left, i; | |
860 | size_t codepoints_read, output_len; | |
861 | char *input, *output; | |
862 | char utf8_buf[256], encoded_output[256]; | |
863 | size_t offsets[256]; | |
864 | ||
865 | /* Convert STR to UTF-8. */ | |
866 | for (i = printed, utf8_len = 0, input = utf8_buf; | |
867 | i < len && utf8_len + 4 < sizeof (utf8_buf); | |
868 | i++) | |
07f49ac7 | 869 | { |
f4bc4e59 LC |
870 | offsets[utf8_len] = i; |
871 | utf8_len += codepoint_to_utf8 (STR_REF (str, i), | |
872 | (scm_t_uint8 *) input); | |
873 | input = utf8_buf + utf8_len; | |
874 | } | |
875 | ||
876 | input = utf8_buf; | |
877 | input_left = utf8_len; | |
878 | ||
879 | output = encoded_output; | |
880 | output_left = sizeof (encoded_output); | |
881 | ||
882 | done = iconv (pt->output_cd, &input, &input_left, | |
883 | &output, &output_left); | |
07f49ac7 | 884 | |
f4bc4e59 LC |
885 | output_len = sizeof (encoded_output) - output_left; |
886 | ||
887 | if (SCM_UNLIKELY (done == (size_t) -1)) | |
888 | { | |
b2548e23 AW |
889 | int errno_save = errno; |
890 | ||
f4bc4e59 LC |
891 | /* Reset the `iconv' state. */ |
892 | iconv (pt->output_cd, NULL, NULL, NULL, NULL); | |
893 | ||
7174bc08 LC |
894 | /* Print the OUTPUT_LEN bytes successfully converted. */ |
895 | scm_lfwrite (encoded_output, output_len, port); | |
896 | ||
897 | /* See how many input codepoints these OUTPUT_LEN bytes | |
898 | corresponds to. */ | |
899 | codepoints_read = offsets[input - utf8_buf] - printed; | |
900 | printed += codepoints_read; | |
901 | ||
b2548e23 | 902 | if (errno_save == EILSEQ && |
f4bc4e59 | 903 | strategy != SCM_FAILED_CONVERSION_ERROR) |
07f49ac7 | 904 | { |
f4bc4e59 LC |
905 | /* Conversion failed somewhere in INPUT and we want to |
906 | escape or substitute the offending input character. */ | |
907 | ||
f4bc4e59 | 908 | if (strategy == SCM_FAILED_CONVERSION_ESCAPE_SEQUENCE) |
f1ee6d54 | 909 | { |
f4bc4e59 LC |
910 | scm_t_wchar ch; |
911 | ||
912 | /* Find CH, the offending codepoint, and escape it. */ | |
913 | ch = STR_REF (str, offsets[input - utf8_buf]); | |
914 | write_character_escaped (ch, 1, port); | |
f1ee6d54 | 915 | } |
07f49ac7 | 916 | else |
f4bc4e59 LC |
917 | /* STRATEGY is `SCM_FAILED_CONVERSION_QUESTION_MARK'. */ |
918 | display_string ("?", 1, 1, port, strategy); | |
9c44cd45 | 919 | |
f4bc4e59 LC |
920 | printed++; |
921 | } | |
922 | else | |
923 | /* Something bad happened that we can't handle: bail out. */ | |
924 | break; | |
07f49ac7 LC |
925 | } |
926 | else | |
f4bc4e59 LC |
927 | { |
928 | /* INPUT was successfully converted, entirely; print the | |
929 | result. */ | |
930 | scm_lfwrite (encoded_output, output_len, port); | |
931 | codepoints_read = i - printed; | |
932 | printed += codepoints_read; | |
933 | } | |
07f49ac7 LC |
934 | } |
935 | ||
936 | return printed; | |
f4bc4e59 LC |
937 | #undef STR_REF |
938 | } | |
939 | ||
940 | /* Attempt to display CH to PORT according to STRATEGY. Return non-zero | |
941 | if CH was successfully displayed, zero otherwise (e.g., if it was not | |
942 | representable in PORT's encoding.) */ | |
943 | static int | |
944 | display_character (scm_t_wchar ch, SCM port, | |
945 | scm_t_string_failed_conversion_handler strategy) | |
946 | { | |
947 | return display_string (&ch, 0, 1, port, strategy) == 1; | |
07f49ac7 LC |
948 | } |
949 | ||
33d92fe6 LC |
950 | /* Attempt to pretty-print CH, a combining character, to PORT. Return |
951 | zero upon failure, non-zero otherwise. The idea is to print CH above | |
952 | a dotted circle to make it more visible. */ | |
953 | static int | |
954 | write_combining_character (scm_t_wchar ch, SCM port) | |
955 | { | |
f4bc4e59 LC |
956 | scm_t_wchar str[2]; |
957 | ||
958 | str[0] = SCM_CODEPOINT_DOTTED_CIRCLE; | |
959 | str[1] = ch; | |
960 | ||
961 | return display_string (str, 0, 2, port, iconveh_error) == 2; | |
962 | } | |
33d92fe6 | 963 | |
f4bc4e59 LC |
964 | /* Write CH to PORT in its escaped form, using the string escape syntax |
965 | if STRING_ESCAPES_P is non-zero. */ | |
966 | static void | |
967 | write_character_escaped (scm_t_wchar ch, int string_escapes_p, SCM port) | |
968 | { | |
969 | if (string_escapes_p) | |
33d92fe6 | 970 | { |
f4bc4e59 LC |
971 | /* Represent CH using the in-string escape syntax. */ |
972 | ||
973 | static const char hex[] = "0123456789abcdef"; | |
974 | static const char escapes[7] = "abtnvfr"; | |
975 | char buf[9]; | |
976 | ||
977 | if (ch >= 0x07 && ch <= 0x0D && ch != 0x0A) | |
33d92fe6 | 978 | { |
f4bc4e59 LC |
979 | /* Use special escapes for some C0 controls. */ |
980 | buf[0] = '\\'; | |
981 | buf[1] = escapes[ch - 0x07]; | |
982 | scm_lfwrite (buf, 2, port); | |
983 | } | |
984 | else if (!SCM_R6RS_ESCAPES_P) | |
985 | { | |
986 | if (ch <= 0xFF) | |
987 | { | |
988 | buf[0] = '\\'; | |
989 | buf[1] = 'x'; | |
990 | buf[2] = hex[ch / 16]; | |
991 | buf[3] = hex[ch % 16]; | |
992 | scm_lfwrite (buf, 4, port); | |
993 | } | |
994 | else if (ch <= 0xFFFF) | |
995 | { | |
996 | buf[0] = '\\'; | |
997 | buf[1] = 'u'; | |
998 | buf[2] = hex[(ch & 0xF000) >> 12]; | |
999 | buf[3] = hex[(ch & 0xF00) >> 8]; | |
1000 | buf[4] = hex[(ch & 0xF0) >> 4]; | |
1001 | buf[5] = hex[(ch & 0xF)]; | |
1002 | scm_lfwrite (buf, 6, port); | |
1003 | } | |
1004 | else if (ch > 0xFFFF) | |
1005 | { | |
1006 | buf[0] = '\\'; | |
1007 | buf[1] = 'U'; | |
1008 | buf[2] = hex[(ch & 0xF00000) >> 20]; | |
1009 | buf[3] = hex[(ch & 0xF0000) >> 16]; | |
1010 | buf[4] = hex[(ch & 0xF000) >> 12]; | |
1011 | buf[5] = hex[(ch & 0xF00) >> 8]; | |
1012 | buf[6] = hex[(ch & 0xF0) >> 4]; | |
1013 | buf[7] = hex[(ch & 0xF)]; | |
1014 | scm_lfwrite (buf, 8, port); | |
1015 | } | |
33d92fe6 LC |
1016 | } |
1017 | else | |
f4bc4e59 LC |
1018 | { |
1019 | /* Print an R6RS variable-length hex escape: "\xNNNN;". */ | |
1020 | scm_t_wchar ch2 = ch; | |
1021 | ||
1022 | int i = 8; | |
1023 | buf[i] = ';'; | |
1024 | i --; | |
1025 | if (ch == 0) | |
1026 | buf[i--] = '0'; | |
1027 | else | |
1028 | while (ch2 > 0) | |
1029 | { | |
1030 | buf[i] = hex[ch2 & 0xF]; | |
1031 | ch2 >>= 4; | |
1032 | i --; | |
1033 | } | |
1034 | buf[i] = 'x'; | |
1035 | i --; | |
1036 | buf[i] = '\\'; | |
1037 | scm_lfwrite (buf + i, 9 - i, port); | |
1038 | } | |
33d92fe6 LC |
1039 | } |
1040 | else | |
f4bc4e59 LC |
1041 | { |
1042 | /* Represent CH using the character escape syntax. */ | |
1043 | const char *name; | |
33d92fe6 | 1044 | |
f4bc4e59 LC |
1045 | name = scm_i_charname (SCM_MAKE_CHAR (ch)); |
1046 | if (name != NULL) | |
1047 | scm_puts (name, port); | |
1048 | else | |
1049 | PRINT_CHAR_ESCAPE (ch, port); | |
1050 | } | |
33d92fe6 LC |
1051 | } |
1052 | ||
07f49ac7 LC |
1053 | /* Write CH to PORT, escaping it if it's non-graphic or not |
1054 | representable in PORT's encoding. If STRING_ESCAPES_P is true and CH | |
1055 | needs to be escaped, it is escaped using the in-string escape syntax; | |
1056 | otherwise the character escape syntax is used. */ | |
1057 | static void | |
1058 | write_character (scm_t_wchar ch, SCM port, int string_escapes_p) | |
1059 | { | |
1060 | int printed = 0; | |
f4bc4e59 LC |
1061 | scm_t_string_failed_conversion_handler strategy; |
1062 | ||
1063 | strategy = scm_i_get_conversion_strategy (port); | |
07f49ac7 LC |
1064 | |
1065 | if (string_escapes_p) | |
1066 | { | |
1067 | /* Check if CH deserves special treatment. */ | |
1068 | if (ch == '"' || ch == '\\') | |
1069 | { | |
f4bc4e59 LC |
1070 | display_character ('\\', port, iconveh_question_mark); |
1071 | display_character (ch, port, strategy); | |
07f49ac7 LC |
1072 | printed = 1; |
1073 | } | |
1074 | else if (ch == ' ' || ch == '\n') | |
1075 | { | |
f4bc4e59 | 1076 | display_character (ch, port, strategy); |
07f49ac7 LC |
1077 | printed = 1; |
1078 | } | |
1079 | } | |
1080 | else | |
33d92fe6 | 1081 | { |
f4bc4e59 | 1082 | display_string ("#\\", 1, 2, port, iconveh_question_mark); |
33d92fe6 LC |
1083 | |
1084 | if (uc_combining_class (ch) != UC_CCC_NR) | |
1085 | /* Character is a combining character, so attempt to | |
1086 | pretty-print it. */ | |
1087 | printed = write_combining_character (ch, port); | |
1088 | } | |
07f49ac7 LC |
1089 | |
1090 | if (!printed | |
1091 | && uc_is_general_category_withtable (ch, | |
1092 | UC_CATEGORY_MASK_L | | |
1093 | UC_CATEGORY_MASK_M | | |
1094 | UC_CATEGORY_MASK_N | | |
1095 | UC_CATEGORY_MASK_P | | |
1096 | UC_CATEGORY_MASK_S)) | |
1097 | /* CH is graphic; attempt to display it. */ | |
1098 | printed = display_character (ch, port, iconveh_error); | |
1099 | ||
1100 | if (!printed) | |
f4bc4e59 LC |
1101 | /* CH isn't graphic or cannot be represented in PORT's encoding. */ |
1102 | write_character_escaped (ch, string_escapes_p, port); | |
9c44cd45 | 1103 | } |
0f2d19dd JB |
1104 | |
1105 | /* Print an integer. | |
1106 | */ | |
1cc91f1b | 1107 | |
0f2d19dd | 1108 | void |
a406c9e9 | 1109 | scm_intprint (scm_t_intmax n, int radix, SCM port) |
0f2d19dd JB |
1110 | { |
1111 | char num_buf[SCM_INTBUFLEN]; | |
b7f3516f | 1112 | scm_lfwrite (num_buf, scm_iint2str (n, radix, num_buf), port); |
0f2d19dd JB |
1113 | } |
1114 | ||
a406c9e9 MV |
1115 | void |
1116 | scm_uintprint (scm_t_uintmax n, int radix, SCM port) | |
1117 | { | |
1118 | char num_buf[SCM_INTBUFLEN]; | |
1119 | scm_lfwrite (num_buf, scm_iuint2str (n, radix, num_buf), port); | |
1120 | } | |
1121 | ||
0f2d19dd JB |
1122 | /* Print an object of unrecognized type. |
1123 | */ | |
1cc91f1b | 1124 | |
0f2d19dd | 1125 | void |
1bbd0b84 | 1126 | scm_ipruk (char *hdr, SCM ptr, SCM port) |
0f2d19dd | 1127 | { |
b7f3516f TT |
1128 | scm_puts ("#<unknown-", port); |
1129 | scm_puts (hdr, port); | |
26224b3f | 1130 | if (1) /* (scm_in_heap_p (ptr)) */ /* FIXME */ |
0f2d19dd | 1131 | { |
b7f3516f | 1132 | scm_puts (" (0x", port); |
0345e278 | 1133 | scm_uintprint (SCM_CELL_WORD_0 (ptr), 16, port); |
b7f3516f | 1134 | scm_puts (" . 0x", port); |
0345e278 | 1135 | scm_uintprint (SCM_CELL_WORD_1 (ptr), 16, port); |
b7f3516f | 1136 | scm_puts (") @", port); |
0f2d19dd | 1137 | } |
b7f3516f | 1138 | scm_puts (" 0x", port); |
0345e278 | 1139 | scm_uintprint (SCM_UNPACK (ptr), 16, port); |
b7f3516f | 1140 | scm_putc ('>', port); |
0f2d19dd JB |
1141 | } |
1142 | ||
1cc91f1b | 1143 | |
904a077d | 1144 | /* Print a list. |
22a52da1 | 1145 | */ |
0f2d19dd | 1146 | void |
34d19ef6 | 1147 | scm_iprlist (char *hdr, SCM exp, int tlr, SCM port, scm_print_state *pstate) |
0f2d19dd | 1148 | { |
c62fbfe1 | 1149 | register SCM hare, tortoise; |
c014a02e | 1150 | long floor = pstate->top - 2; |
b7f3516f | 1151 | scm_puts (hdr, port); |
0f2d19dd | 1152 | /* CHECK_INTS; */ |
c62fbfe1 MD |
1153 | if (pstate->fancyp) |
1154 | goto fancy_printing; | |
1155 | ||
1156 | /* Run a hare and tortoise so that total time complexity will be | |
1157 | O(depth * N) instead of O(N^2). */ | |
1158 | hare = SCM_CDR (exp); | |
1159 | tortoise = exp; | |
d2e53ed6 | 1160 | while (scm_is_pair (hare)) |
c62fbfe1 | 1161 | { |
bc36d050 | 1162 | if (scm_is_eq (hare, tortoise)) |
c62fbfe1 MD |
1163 | goto fancy_printing; |
1164 | hare = SCM_CDR (hare); | |
d2e53ed6 | 1165 | if (!scm_is_pair (hare)) |
c62fbfe1 MD |
1166 | break; |
1167 | hare = SCM_CDR (hare); | |
1168 | tortoise = SCM_CDR (tortoise); | |
1169 | } | |
1170 | ||
1171 | /* No cdr cycles intrinsic to this list */ | |
1172 | scm_iprin1 (SCM_CAR (exp), port, pstate); | |
d2e53ed6 | 1173 | for (exp = SCM_CDR (exp); scm_is_pair (exp); exp = SCM_CDR (exp)) |
0f2d19dd | 1174 | { |
c014a02e | 1175 | register long i; |
5ca6dc39 | 1176 | |
c62fbfe1 | 1177 | for (i = floor; i >= 0; --i) |
509759dd | 1178 | if (scm_is_eq (PSTATE_STACK_REF(pstate, i), exp)) |
c62fbfe1 MD |
1179 | goto circref; |
1180 | PUSH_REF (pstate, exp); | |
b7f3516f | 1181 | scm_putc (' ', port); |
0f2d19dd | 1182 | /* CHECK_INTS; */ |
c62fbfe1 | 1183 | scm_iprin1 (SCM_CAR (exp), port, pstate); |
0f2d19dd | 1184 | } |
c96d76b8 | 1185 | if (!SCM_NULL_OR_NIL_P (exp)) |
0f2d19dd | 1186 | { |
b7f3516f | 1187 | scm_puts (" . ", port); |
c62fbfe1 | 1188 | scm_iprin1 (exp, port, pstate); |
0f2d19dd | 1189 | } |
c62fbfe1 | 1190 | |
a51ea417 | 1191 | end: |
b7f3516f | 1192 | scm_putc (tlr, port); |
c62fbfe1 | 1193 | pstate->top = floor + 2; |
a51ea417 | 1194 | return; |
c62fbfe1 MD |
1195 | |
1196 | fancy_printing: | |
1197 | { | |
c014a02e | 1198 | long n = pstate->length; |
c62fbfe1 MD |
1199 | |
1200 | scm_iprin1 (SCM_CAR (exp), port, pstate); | |
1201 | exp = SCM_CDR (exp); --n; | |
d2e53ed6 | 1202 | for (; scm_is_pair (exp); exp = SCM_CDR (exp)) |
c62fbfe1 | 1203 | { |
c014a02e | 1204 | register unsigned long i; |
5ca6dc39 | 1205 | |
c62fbfe1 | 1206 | for (i = 0; i < pstate->top; ++i) |
509759dd | 1207 | if (scm_is_eq (PSTATE_STACK_REF(pstate, i), exp)) |
c62fbfe1 MD |
1208 | goto fancy_circref; |
1209 | if (pstate->fancyp) | |
1210 | { | |
1211 | if (n == 0) | |
1212 | { | |
b7f3516f | 1213 | scm_puts (" ...", port); |
c62fbfe1 MD |
1214 | goto skip_tail; |
1215 | } | |
1216 | else | |
1217 | --n; | |
1218 | } | |
1219 | PUSH_REF(pstate, exp); | |
1220 | ++pstate->list_offset; | |
b7f3516f | 1221 | scm_putc (' ', port); |
c62fbfe1 MD |
1222 | /* CHECK_INTS; */ |
1223 | scm_iprin1 (SCM_CAR (exp), port, pstate); | |
1224 | } | |
1225 | } | |
c96d76b8 | 1226 | if (!SCM_NULL_OR_NIL_P (exp)) |
c62fbfe1 | 1227 | { |
b7f3516f | 1228 | scm_puts (" . ", port); |
c62fbfe1 MD |
1229 | scm_iprin1 (exp, port, pstate); |
1230 | } | |
1231 | skip_tail: | |
1232 | pstate->list_offset -= pstate->top - floor - 2; | |
a51ea417 | 1233 | goto end; |
a51ea417 | 1234 | |
c62fbfe1 MD |
1235 | fancy_circref: |
1236 | pstate->list_offset -= pstate->top - floor - 2; | |
1237 | ||
1238 | circref: | |
b7f3516f | 1239 | scm_puts (" . ", port); |
c62fbfe1 MD |
1240 | print_circref (port, pstate, exp); |
1241 | goto end; | |
0f2d19dd JB |
1242 | } |
1243 | ||
1244 | \f | |
1245 | ||
bb35f315 MV |
1246 | int |
1247 | scm_valid_oport_value_p (SCM val) | |
1248 | { | |
368cf54d GB |
1249 | return (SCM_OPOUTPORTP (val) |
1250 | || (SCM_PORT_WITH_PS_P (val) | |
1251 | && SCM_OPOUTPORTP (SCM_PORT_WITH_PS_PORT (val)))); | |
bb35f315 MV |
1252 | } |
1253 | ||
8b840115 | 1254 | /* SCM_GPROC(s_write, "write", 1, 1, 0, scm_write, g_write); */ |
1cc91f1b | 1255 | |
0f2d19dd | 1256 | SCM |
1bbd0b84 | 1257 | scm_write (SCM obj, SCM port) |
0f2d19dd JB |
1258 | { |
1259 | if (SCM_UNBNDP (port)) | |
9de87eea | 1260 | port = scm_current_output_port (); |
3eb7e6ee JB |
1261 | |
1262 | SCM_ASSERT (scm_valid_oport_value_p (port), port, SCM_ARG2, s_write); | |
bb35f315 | 1263 | |
a51ea417 | 1264 | scm_prin1 (obj, port, 1); |
0f2d19dd JB |
1265 | return SCM_UNSPECIFIED; |
1266 | } | |
1267 | ||
1268 | ||
8b840115 | 1269 | /* SCM_GPROC(s_display, "display", 1, 1, 0, scm_display, g_display); */ |
1cc91f1b | 1270 | |
0f2d19dd | 1271 | SCM |
1bbd0b84 | 1272 | scm_display (SCM obj, SCM port) |
0f2d19dd JB |
1273 | { |
1274 | if (SCM_UNBNDP (port)) | |
9de87eea | 1275 | port = scm_current_output_port (); |
3eb7e6ee JB |
1276 | |
1277 | SCM_ASSERT (scm_valid_oport_value_p (port), port, SCM_ARG2, s_display); | |
bb35f315 | 1278 | |
a51ea417 | 1279 | scm_prin1 (obj, port, 0); |
0f2d19dd JB |
1280 | return SCM_UNSPECIFIED; |
1281 | } | |
1282 | ||
70d63753 GB |
1283 | |
1284 | SCM_DEFINE (scm_simple_format, "simple-format", 2, 0, 1, | |
1285 | (SCM destination, SCM message, SCM args), | |
eca65e90 MG |
1286 | "Write @var{message} to @var{destination}, defaulting to\n" |
1287 | "the current output port.\n" | |
1288 | "@var{message} can contain @code{~A} (was @code{%s}) and\n" | |
1289 | "@code{~S} (was @code{%S}) escapes. When printed,\n" | |
1290 | "the escapes are replaced with corresponding members of\n" | |
1291 | "@var{ARGS}:\n" | |
1292 | "@code{~A} formats using @code{display} and @code{~S} formats\n" | |
1293 | "using @code{write}.\n" | |
1294 | "If @var{destination} is @code{#t}, then use the current output\n" | |
1295 | "port, if @var{destination} is @code{#f}, then return a string\n" | |
1296 | "containing the formatted text. Does not add a trailing newline.") | |
70d63753 GB |
1297 | #define FUNC_NAME s_scm_simple_format |
1298 | { | |
dfd03fb9 | 1299 | SCM port, answer = SCM_UNSPECIFIED; |
70d63753 GB |
1300 | int fReturnString = 0; |
1301 | int writingp; | |
889975e5 | 1302 | size_t start, p, end; |
70d63753 | 1303 | |
bc36d050 | 1304 | if (scm_is_eq (destination, SCM_BOOL_T)) |
daba1a71 | 1305 | { |
9de87eea | 1306 | destination = port = scm_current_output_port (); |
daba1a71 | 1307 | } |
7888309b | 1308 | else if (scm_is_false (destination)) |
daba1a71 MD |
1309 | { |
1310 | fReturnString = 1; | |
0b2c2ba3 | 1311 | port = scm_mkstrport (SCM_INUM0, SCM_BOOL_F, |
dfd03fb9 MD |
1312 | SCM_OPN | SCM_WRTNG, |
1313 | FUNC_NAME); | |
1314 | destination = port; | |
daba1a71 MD |
1315 | } |
1316 | else | |
1317 | { | |
1318 | SCM_VALIDATE_OPORT_VALUE (1, destination); | |
dfd03fb9 | 1319 | port = SCM_COERCE_OUTPORT (destination); |
daba1a71 MD |
1320 | } |
1321 | SCM_VALIDATE_STRING (2, message); | |
af45e3b0 | 1322 | SCM_VALIDATE_REST_ARGUMENT (args); |
70d63753 | 1323 | |
889975e5 MG |
1324 | p = 0; |
1325 | start = 0; | |
1326 | end = scm_i_string_length (message); | |
b24b5e13 | 1327 | for (p = start; p != end; ++p) |
889975e5 | 1328 | if (scm_i_string_ref (message, p) == '~') |
70d63753 | 1329 | { |
b24b5e13 | 1330 | if (++p == end) |
6662998f MV |
1331 | break; |
1332 | ||
889975e5 | 1333 | switch (scm_i_string_ref (message, p)) |
6662998f MV |
1334 | { |
1335 | case 'A': case 'a': | |
1336 | writingp = 0; | |
1337 | break; | |
1338 | case 'S': case 's': | |
1339 | writingp = 1; | |
1340 | break; | |
1341 | case '~': | |
889975e5 | 1342 | scm_lfwrite_substr (message, start, p, port); |
6662998f MV |
1343 | start = p + 1; |
1344 | continue; | |
1345 | case '%': | |
889975e5 | 1346 | scm_lfwrite_substr (message, start, p - 1, port); |
dfd03fb9 | 1347 | scm_newline (port); |
6662998f MV |
1348 | start = p + 1; |
1349 | continue; | |
1350 | default: | |
1afff620 | 1351 | SCM_MISC_ERROR ("FORMAT: Unsupported format option ~~~A - use (ice-9 format) instead", |
889975e5 | 1352 | scm_list_1 (SCM_MAKE_CHAR (scm_i_string_ref (message, p)))); |
6662998f MV |
1353 | |
1354 | } | |
70d63753 | 1355 | |
6662998f | 1356 | |
d2e53ed6 | 1357 | if (!scm_is_pair (args)) |
1afff620 | 1358 | SCM_MISC_ERROR ("FORMAT: Missing argument for ~~~A", |
889975e5 | 1359 | scm_list_1 (SCM_MAKE_CHAR (scm_i_string_ref (message, p)))); |
6662998f | 1360 | |
889975e5 | 1361 | scm_lfwrite_substr (message, start, p - 1, port); |
dfd03fb9 | 1362 | /* we pass destination here */ |
70d63753 GB |
1363 | scm_prin1 (SCM_CAR (args), destination, writingp); |
1364 | args = SCM_CDR (args); | |
1365 | start = p + 1; | |
1366 | } | |
6662998f | 1367 | |
889975e5 | 1368 | scm_lfwrite_substr (message, start, p, port); |
bc36d050 | 1369 | if (!scm_is_eq (args, SCM_EOL)) |
1afff620 KN |
1370 | SCM_MISC_ERROR ("FORMAT: ~A superfluous arguments", |
1371 | scm_list_1 (scm_length (args))); | |
70d63753 GB |
1372 | |
1373 | if (fReturnString) | |
1374 | answer = scm_strport_to_string (destination); | |
1375 | ||
daba1a71 | 1376 | return scm_return_first (answer, message); |
70d63753 GB |
1377 | } |
1378 | #undef FUNC_NAME | |
1379 | ||
1380 | ||
3b3b36dd | 1381 | SCM_DEFINE (scm_newline, "newline", 0, 1, 0, |
b450f070 | 1382 | (SCM port), |
8f85c0c6 NJ |
1383 | "Send a newline to @var{port}.\n" |
1384 | "If @var{port} is omitted, send to the current output port.") | |
1bbd0b84 | 1385 | #define FUNC_NAME s_scm_newline |
0f2d19dd JB |
1386 | { |
1387 | if (SCM_UNBNDP (port)) | |
9de87eea | 1388 | port = scm_current_output_port (); |
3eb7e6ee | 1389 | |
34d19ef6 | 1390 | SCM_VALIDATE_OPORT_VALUE (1, port); |
bb35f315 | 1391 | |
0ef4ae82 | 1392 | scm_putc ('\n', SCM_COERCE_OUTPORT (port)); |
0f2d19dd JB |
1393 | return SCM_UNSPECIFIED; |
1394 | } | |
1bbd0b84 | 1395 | #undef FUNC_NAME |
0f2d19dd | 1396 | |
3b3b36dd | 1397 | SCM_DEFINE (scm_write_char, "write-char", 1, 1, 0, |
b450f070 | 1398 | (SCM chr, SCM port), |
eca65e90 | 1399 | "Send character @var{chr} to @var{port}.") |
1bbd0b84 | 1400 | #define FUNC_NAME s_scm_write_char |
0f2d19dd JB |
1401 | { |
1402 | if (SCM_UNBNDP (port)) | |
9de87eea | 1403 | port = scm_current_output_port (); |
3eb7e6ee | 1404 | |
34d19ef6 HWN |
1405 | SCM_VALIDATE_CHAR (1, chr); |
1406 | SCM_VALIDATE_OPORT_VALUE (2, port); | |
07f49ac7 LC |
1407 | |
1408 | port = SCM_COERCE_OUTPORT (port); | |
1409 | if (!display_character (SCM_CHAR (chr), port, | |
1410 | scm_i_get_conversion_strategy (port))) | |
1411 | scm_encoding_error (__func__, errno, | |
1412 | "cannot convert to output locale", | |
6851d3be | 1413 | port, chr); |
07f49ac7 | 1414 | |
0f2d19dd JB |
1415 | return SCM_UNSPECIFIED; |
1416 | } | |
1bbd0b84 | 1417 | #undef FUNC_NAME |
0f2d19dd | 1418 | |
0f2d19dd JB |
1419 | \f |
1420 | ||
bb35f315 | 1421 | /* Call back to Scheme code to do the printing of special objects |
c19bc088 MD |
1422 | * (like structs). SCM_PRINTER_APPLY applies PROC to EXP and a smob |
1423 | * containing PORT and PSTATE. This object can be used as the port for | |
1424 | * display/write etc to continue the current print chain. The REVEALED | |
1425 | * field of PSTATE is set to true to indicate that the print state has | |
1426 | * escaped to Scheme and thus has to be freed by the GC. | |
1427 | */ | |
1428 | ||
92c2555f | 1429 | scm_t_bits scm_tc16_port_with_ps; |
c19bc088 MD |
1430 | |
1431 | /* Print exactly as the port itself would */ | |
1432 | ||
1433 | static int | |
e841c3e0 | 1434 | port_with_ps_print (SCM obj, SCM port, scm_print_state *pstate) |
c19bc088 MD |
1435 | { |
1436 | obj = SCM_PORT_WITH_PS_PORT (obj); | |
1437 | return scm_ptobs[SCM_PTOBNUM (obj)].print (obj, port, pstate); | |
1438 | } | |
c4f37e80 MV |
1439 | |
1440 | SCM | |
1bbd0b84 | 1441 | scm_printer_apply (SCM proc, SCM exp, SCM port, scm_print_state *pstate) |
c4f37e80 | 1442 | { |
bb35f315 | 1443 | pstate->revealed = 1; |
dfd03fb9 MD |
1444 | return scm_call_2 (proc, exp, |
1445 | scm_i_port_with_print_state (port, pstate->handle)); | |
c19bc088 MD |
1446 | } |
1447 | ||
dfd03fb9 | 1448 | SCM_DEFINE (scm_port_with_print_state, "port-with-print-state", 1, 1, 0, |
1bbd0b84 | 1449 | (SCM port, SCM pstate), |
71331188 | 1450 | "Create a new port which behaves like @var{port}, but with an\n" |
dfd03fb9 MD |
1451 | "included print state @var{pstate}. @var{pstate} is optional.\n" |
1452 | "If @var{pstate} isn't supplied and @var{port} already has\n" | |
1453 | "a print state, the old print state is reused.") | |
1bbd0b84 | 1454 | #define FUNC_NAME s_scm_port_with_print_state |
c19bc088 | 1455 | { |
34d19ef6 | 1456 | SCM_VALIDATE_OPORT_VALUE (1, port); |
dfd03fb9 MD |
1457 | if (!SCM_UNBNDP (pstate)) |
1458 | SCM_VALIDATE_PRINTSTATE (2, pstate); | |
1459 | return scm_i_port_with_print_state (port, pstate); | |
c19bc088 | 1460 | } |
1bbd0b84 | 1461 | #undef FUNC_NAME |
c19bc088 | 1462 | |
a1ec6916 | 1463 | SCM_DEFINE (scm_get_print_state, "get-print-state", 1, 0, 0, |
1bbd0b84 | 1464 | (SCM port), |
71331188 MG |
1465 | "Return the print state of the port @var{port}. If @var{port}\n" |
1466 | "has no associated print state, @code{#f} is returned.") | |
1bbd0b84 | 1467 | #define FUNC_NAME s_scm_get_print_state |
c19bc088 | 1468 | { |
368cf54d GB |
1469 | if (SCM_PORT_WITH_PS_P (port)) |
1470 | return SCM_PORT_WITH_PS_PS (port); | |
f5f2dcff | 1471 | if (SCM_OUTPUT_PORT_P (port)) |
368cf54d | 1472 | return SCM_BOOL_F; |
276dd677 | 1473 | SCM_WRONG_TYPE_ARG (1, port); |
c4f37e80 | 1474 | } |
1bbd0b84 | 1475 | #undef FUNC_NAME |
bb35f315 | 1476 | |
c4f37e80 | 1477 | \f |
1cc91f1b | 1478 | |
0f2d19dd JB |
1479 | void |
1480 | scm_init_print () | |
0f2d19dd | 1481 | { |
c19bc088 | 1482 | SCM vtable, layout, type; |
d5cf5324 | 1483 | |
62560650 | 1484 | scm_init_opts (scm_print_options, scm_print_opts); |
d5cf5324 | 1485 | |
4a655e50 | 1486 | scm_print_options (scm_list_4 (scm_from_latin1_symbol ("highlight-prefix"), |
81ae25da | 1487 | scm_from_locale_string ("{"), |
4a655e50 | 1488 | scm_from_latin1_symbol ("highlight-suffix"), |
81ae25da MV |
1489 | scm_from_locale_string ("}"))); |
1490 | ||
d5cf5324 DH |
1491 | scm_gc_register_root (&print_state_pool); |
1492 | scm_gc_register_root (&scm_print_state_vtable); | |
3ce4544c | 1493 | vtable = scm_make_vtable_vtable (scm_nullstr, SCM_INUM0, SCM_EOL); |
cc95e00a MV |
1494 | layout = |
1495 | scm_make_struct_layout (scm_from_locale_string (SCM_PRINT_STATE_LAYOUT)); | |
1afff620 | 1496 | type = scm_make_struct (vtable, SCM_INUM0, scm_list_1 (layout)); |
4a655e50 | 1497 | scm_set_struct_vtable_name_x (type, scm_from_latin1_symbol ("print-state")); |
bb35f315 | 1498 | scm_print_state_vtable = type; |
c4f37e80 | 1499 | |
c19bc088 MD |
1500 | /* Don't want to bind a wrapper class in GOOPS, so pass 0 as arg1. */ |
1501 | scm_tc16_port_with_ps = scm_make_smob_type (0, 0); | |
e841c3e0 | 1502 | scm_set_smob_print (scm_tc16_port_with_ps, port_with_ps_print); |
81ae25da | 1503 | |
a0599745 | 1504 | #include "libguile/print.x" |
475fa9a5 MV |
1505 | |
1506 | scm_print_opts[SCM_PRINT_KEYWORD_STYLE_I].val = SCM_UNPACK (sym_reader); | |
0f2d19dd | 1507 | } |
89e00824 ML |
1508 | |
1509 | /* | |
1510 | Local Variables: | |
1511 | c-file-style: "gnu" | |
1512 | End: | |
1513 | */ |