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" | |
2fb924f6 | 43 | #include "libguile/programs.h" |
a0599745 MD |
44 | #include "libguile/alist.h" |
45 | #include "libguile/struct.h" | |
a0599745 MD |
46 | #include "libguile/ports.h" |
47 | #include "libguile/root.h" | |
48 | #include "libguile/strings.h" | |
49 | #include "libguile/strports.h" | |
50 | #include "libguile/vectors.h" | |
327967ef | 51 | #include "libguile/numbers.h" |
6f3b0cc2 | 52 | #include "libguile/vm.h" |
a0599745 MD |
53 | |
54 | #include "libguile/validate.h" | |
55 | #include "libguile/print.h" | |
22fc179a HWN |
56 | |
57 | #include "libguile/private-options.h" | |
58 | ||
0f2d19dd JB |
59 | \f |
60 | ||
07f49ac7 LC |
61 | /* Character printers. */ |
62 | ||
f4bc4e59 LC |
63 | static size_t display_string (const void *, int, size_t, SCM, |
64 | scm_t_string_failed_conversion_handler); | |
65 | ||
07f49ac7 LC |
66 | static int display_character (scm_t_wchar, SCM, |
67 | scm_t_string_failed_conversion_handler); | |
f4bc4e59 | 68 | |
07f49ac7 LC |
69 | static void write_character (scm_t_wchar, SCM, int); |
70 | ||
f4bc4e59 LC |
71 | static void write_character_escaped (scm_t_wchar, int, SCM); |
72 | ||
07f49ac7 LC |
73 | \f |
74 | ||
0f2d19dd JB |
75 | /* {Names of immediate symbols} |
76 | * | |
77 | * This table must agree with the declarations in scm.h: {Immediate Symbols}. | |
78 | */ | |
79 | ||
e17d318f DH |
80 | /* This table must agree with the list of flags in tags.h. */ |
81 | static const char *iflagnames[] = | |
82 | { | |
83 | "#f", | |
45f4cbdf MW |
84 | "#nil", /* Elisp nil value. Should print from elisp as symbol `nil'. */ |
85 | "#<XXX UNUSED LISP FALSE -- DO NOT USE -- SHOULD NEVER BE SEEN XXX>", | |
86 | "()", | |
e17d318f | 87 | "#t", |
f60c2c4e MW |
88 | "#<XXX UNUSED BOOLEAN 0 -- DO NOT USE -- SHOULD NEVER BE SEEN XXX>", |
89 | "#<XXX UNUSED BOOLEAN 1 -- DO NOT USE -- SHOULD NEVER BE SEEN XXX>", | |
90 | "#<XXX UNUSED BOOLEAN 2 -- DO NOT USE -- SHOULD NEVER BE SEEN XXX>", | |
45f4cbdf | 91 | "#<unspecified>", |
e17d318f DH |
92 | "#<undefined>", |
93 | "#<eof>", | |
e17d318f DH |
94 | |
95 | /* Unbound slot marker for GOOPS. For internal use in GOOPS only. */ | |
96 | "#<unbound>", | |
e17d318f DH |
97 | }; |
98 | ||
475fa9a5 MV |
99 | SCM_SYMBOL (sym_reader, "reader"); |
100 | ||
92c2555f | 101 | scm_t_option scm_print_opts[] = { |
210c0325 | 102 | { SCM_OPTION_SCM, "highlight-prefix", (scm_t_bits)SCM_BOOL_F_BITS, |
81ae25da | 103 | "The string to print before highlighted values." }, |
210c0325 | 104 | { SCM_OPTION_SCM, "highlight-suffix", (scm_t_bits)SCM_BOOL_F_BITS, |
475fa9a5 | 105 | "The string to print after highlighted values." }, |
210c0325 | 106 | { SCM_OPTION_SCM, "quote-keywordish-symbols", (scm_t_bits)SCM_BOOL_F_BITS, |
475fa9a5 MV |
107 | "How to print symbols that have a colon as their first or last character. " |
108 | "The value '#f' does not quote the colons; '#t' quotes them; " | |
8500b186 AW |
109 | "'reader' quotes them when the reader option 'keywords' is not '#f'." }, |
110 | { SCM_OPTION_BOOLEAN, "escape-newlines", 1, | |
111 | "Render newlines as \\n when printing using `write'." }, | |
62560650 | 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 | { \ | |
0607ebbf | 160 | scm_putc_unlocked ('#', port); \ |
dbb5de29 NJ |
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; |
0607ebbf | 304 | scm_putc_unlocked ('#', port); |
c62fbfe1 | 305 | scm_intprint (i - self, 10, port); |
0607ebbf | 306 | scm_putc_unlocked ('#', 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 | ||
2e9fc9fc AW |
323 | #define INITIAL_IDENTIFIER_MASK \ |
324 | (UC_CATEGORY_MASK_Lu | UC_CATEGORY_MASK_Ll | UC_CATEGORY_MASK_Lt \ | |
325 | | UC_CATEGORY_MASK_Lm | UC_CATEGORY_MASK_Lo | UC_CATEGORY_MASK_Mn \ | |
326 | | UC_CATEGORY_MASK_Nl | UC_CATEGORY_MASK_No | UC_CATEGORY_MASK_Pd \ | |
327 | | UC_CATEGORY_MASK_Pc | UC_CATEGORY_MASK_Po | UC_CATEGORY_MASK_Sc \ | |
328 | | UC_CATEGORY_MASK_Sm | UC_CATEGORY_MASK_Sk | UC_CATEGORY_MASK_So \ | |
329 | | UC_CATEGORY_MASK_Co) | |
330 | ||
331 | #define SUBSEQUENT_IDENTIFIER_MASK \ | |
332 | (INITIAL_IDENTIFIER_MASK \ | |
333 | | UC_CATEGORY_MASK_Nd | UC_CATEGORY_MASK_Mc | UC_CATEGORY_MASK_Me) | |
334 | ||
15671c6e AW |
335 | static int |
336 | symbol_has_extended_read_syntax (SCM sym) | |
6662998f | 337 | { |
15671c6e AW |
338 | size_t pos, len = scm_i_symbol_length (sym); |
339 | scm_t_wchar c; | |
340 | ||
341 | /* The empty symbol. */ | |
342 | if (len == 0) | |
343 | return 1; | |
344 | ||
345 | c = scm_i_symbol_ref (sym, 0); | |
346 | ||
347 | /* Single dot; conflicts with dotted-pair notation. */ | |
348 | if (len == 1 && c == '.') | |
349 | return 1; | |
350 | ||
351 | /* Other initial-character constraints. */ | |
2e9fc9fc | 352 | if (c == '\'' || c == '`' || c == ',' || c == '"' || c == ';' || c == '#') |
15671c6e AW |
353 | return 1; |
354 | ||
355 | /* Keywords can be identified by trailing colons too. */ | |
356 | if (c == ':' || scm_i_symbol_ref (sym, len - 1) == ':') | |
357 | return quote_keywordish_symbols (); | |
358 | ||
359 | /* Number-ish symbols. */ | |
360 | if (scm_is_true (scm_i_string_to_number (scm_symbol_to_string (sym), 10))) | |
361 | return 1; | |
362 | ||
2e9fc9fc AW |
363 | /* Other disallowed first characters. */ |
364 | if (!uc_is_general_category_withtable (c, INITIAL_IDENTIFIER_MASK)) | |
365 | return 1; | |
366 | ||
367 | /* Otherwise, any character that's in the identifier category mask is | |
368 | fine to pass through as-is, provided it's not one of the ASCII | |
369 | delimiters like `;'. */ | |
370 | for (pos = 1; pos < len; pos++) | |
6662998f | 371 | { |
2e9fc9fc AW |
372 | c = scm_i_symbol_ref (sym, pos); |
373 | if (!uc_is_general_category_withtable (c, SUBSEQUENT_IDENTIFIER_MASK)) | |
374 | return 1; | |
375 | else if (c == '"' || c == ';' || c == '#') | |
376 | return 1; | |
6662998f | 377 | } |
c6b49e89 | 378 | |
15671c6e AW |
379 | return 0; |
380 | } | |
381 | ||
382 | static void | |
383 | print_normal_symbol (SCM sym, SCM port) | |
384 | { | |
385 | scm_display (scm_symbol_to_string (sym), port); | |
386 | } | |
387 | ||
15671c6e AW |
388 | static void |
389 | print_extended_symbol (SCM sym, SCM port) | |
390 | { | |
391 | size_t pos, len; | |
392 | scm_t_string_failed_conversion_handler strategy; | |
393 | ||
394 | len = scm_i_symbol_length (sym); | |
395 | strategy = scm_i_get_conversion_strategy (port); | |
396 | ||
f209aeee | 397 | scm_lfwrite_unlocked ("#{", 2, port); |
15671c6e AW |
398 | |
399 | for (pos = 0; pos < len; pos++) | |
400 | { | |
401 | scm_t_wchar c = scm_i_symbol_ref (sym, pos); | |
402 | ||
2e9fc9fc AW |
403 | if (uc_is_general_category_withtable (c, |
404 | SUBSEQUENT_IDENTIFIER_MASK | |
405 | | UC_CATEGORY_MASK_Zs)) | |
15671c6e | 406 | { |
15671c6e AW |
407 | if (!display_character (c, port, strategy)) |
408 | scm_encoding_error ("print_extended_symbol", errno, | |
409 | "cannot convert to output locale", | |
410 | port, SCM_MAKE_CHAR (c)); | |
2e9fc9fc AW |
411 | } |
412 | else | |
413 | { | |
414 | display_string ("\\x", 1, 2, port, iconveh_question_mark); | |
415 | scm_intprint (c, 16, port); | |
416 | display_character (';', port, iconveh_question_mark); | |
15671c6e AW |
417 | } |
418 | } | |
419 | ||
f209aeee | 420 | scm_lfwrite_unlocked ("}#", 2, port); |
15671c6e AW |
421 | } |
422 | ||
423 | /* FIXME: allow R6RS hex escapes instead of #{...}#. */ | |
424 | void | |
425 | scm_i_print_symbol_name (SCM sym, SCM port) | |
426 | { | |
427 | if (symbol_has_extended_read_syntax (sym)) | |
428 | print_extended_symbol (sym, port); | |
429 | else | |
430 | print_normal_symbol (sym, port); | |
6662998f MV |
431 | } |
432 | ||
e23106d5 MG |
433 | void |
434 | scm_print_symbol_name (const char *str, size_t len, SCM port) | |
435 | { | |
25d50a05 | 436 | SCM symbol = scm_from_utf8_symboln (str, len); |
ab33782c | 437 | scm_i_print_symbol_name (symbol, port); |
e23106d5 MG |
438 | } |
439 | ||
c62fbfe1 | 440 | /* Print generally. Handles both write and display according to PSTATE. |
0f2d19dd | 441 | */ |
8b840115 MD |
442 | SCM_GPROC(s_write, "write", 1, 1, 0, scm_write, g_write); |
443 | SCM_GPROC(s_display, "display", 1, 1, 0, scm_display, g_display); | |
1cc91f1b | 444 | |
d232520a MV |
445 | static void iprin1 (SCM exp, SCM port, scm_print_state *pstate); |
446 | ||
dea901d6 MG |
447 | |
448 | /* Print a character as an octal or hex escape. */ | |
449 | #define PRINT_CHAR_ESCAPE(i, port) \ | |
450 | do \ | |
451 | { \ | |
452 | if (!SCM_R6RS_ESCAPES_P) \ | |
453 | scm_intprint (i, 8, port); \ | |
454 | else \ | |
455 | { \ | |
0607ebbf | 456 | scm_puts_unlocked ("x", port); \ |
dea901d6 MG |
457 | scm_intprint (i, 16, port); \ |
458 | } \ | |
459 | } \ | |
460 | while (0) | |
461 | ||
462 | ||
0f2d19dd | 463 | void |
1bbd0b84 | 464 | scm_iprin1 (SCM exp, SCM port, scm_print_state *pstate) |
d232520a MV |
465 | { |
466 | if (pstate->fancyp | |
467 | && scm_is_true (scm_memq (exp, pstate->highlight_objects))) | |
468 | { | |
81ae25da | 469 | scm_display (SCM_PRINT_HIGHLIGHT_PREFIX, port); |
d232520a | 470 | iprin1 (exp, port, pstate); |
81ae25da | 471 | scm_display (SCM_PRINT_HIGHLIGHT_SUFFIX, port); |
d232520a MV |
472 | } |
473 | else | |
474 | iprin1 (exp, port, pstate); | |
475 | } | |
476 | ||
477 | static void | |
478 | iprin1 (SCM exp, SCM port, scm_print_state *pstate) | |
0f2d19dd | 479 | { |
54778cd3 | 480 | switch (SCM_ITAG3 (exp)) |
0f2d19dd | 481 | { |
e34f941a DH |
482 | case scm_tc3_tc7_1: |
483 | case scm_tc3_tc7_2: | |
484 | /* These tc3 tags should never occur in an immediate value. They are | |
485 | * only used in cell types of non-immediates, i. e. the value returned | |
486 | * by SCM_CELL_TYPE (exp) can use these tags. | |
487 | */ | |
488 | scm_ipruk ("immediate", exp, port); | |
489 | break; | |
490 | case scm_tc3_int_1: | |
491 | case scm_tc3_int_2: | |
e11e83f3 | 492 | scm_intprint (SCM_I_INUM (exp), 10, port); |
0f2d19dd | 493 | break; |
e34f941a | 494 | case scm_tc3_imm24: |
7866a09b | 495 | if (SCM_CHARP (exp)) |
0f2d19dd | 496 | { |
b7f3516f | 497 | if (SCM_WRITINGP (pstate)) |
07f49ac7 LC |
498 | write_character (SCM_CHAR (exp), port, 0); |
499 | else | |
b7f3516f | 500 | { |
07f49ac7 LC |
501 | if (!display_character (SCM_CHAR (exp), port, |
502 | scm_i_get_conversion_strategy (port))) | |
503 | scm_encoding_error (__func__, errno, | |
504 | "cannot convert to output locale", | |
6851d3be | 505 | port, exp); |
b7f3516f | 506 | } |
0f2d19dd | 507 | } |
a51ea417 | 508 | else if (SCM_IFLAGP (exp) |
e17d318f DH |
509 | && ((size_t) SCM_IFLAGNUM (exp) < (sizeof iflagnames / sizeof (char *)))) |
510 | { | |
0607ebbf | 511 | scm_puts_unlocked (iflagnames [SCM_IFLAGNUM (exp)], port); |
e17d318f | 512 | } |
0f2d19dd | 513 | else |
e34f941a DH |
514 | { |
515 | /* unknown immediate value */ | |
516 | scm_ipruk ("immediate", exp, port); | |
517 | } | |
0f2d19dd | 518 | break; |
e34f941a | 519 | case scm_tc3_cons: |
0f2d19dd JB |
520 | switch (SCM_TYP7 (exp)) |
521 | { | |
904a077d MV |
522 | case scm_tcs_struct: |
523 | { | |
524 | ENTER_NESTED_DATA (pstate, exp, circref); | |
525 | if (SCM_OBJ_CLASS_FLAGS (exp) & SCM_CLASSF_GOOPS) | |
526 | { | |
527 | SCM pwps, print = pstate->writingp ? g_write : g_display; | |
b2b33168 | 528 | if (SCM_UNPACK (print) == 0) |
904a077d | 529 | goto print_struct; |
dfd03fb9 | 530 | pwps = scm_i_port_with_print_state (port, pstate->handle); |
7663c008 | 531 | pstate->revealed = 1; |
fa075d40 | 532 | scm_call_2 (print, exp, pwps); |
904a077d MV |
533 | } |
534 | else | |
535 | { | |
536 | print_struct: | |
537 | scm_print_struct (exp, port, pstate); | |
538 | } | |
539 | EXIT_NESTED_DATA (pstate); | |
540 | } | |
541 | break; | |
0f2d19dd JB |
542 | case scm_tcs_cons_imcar: |
543 | case scm_tcs_cons_nimcar: | |
c62fbfe1 MD |
544 | ENTER_NESTED_DATA (pstate, exp, circref); |
545 | scm_iprlist ("(", exp, ')', port, pstate); | |
546 | EXIT_NESTED_DATA (pstate); | |
a51ea417 MD |
547 | break; |
548 | circref: | |
c62fbfe1 | 549 | print_circref (port, pstate, exp); |
0f2d19dd | 550 | break; |
534c55a9 DH |
551 | case scm_tc7_number: |
552 | switch SCM_TYP16 (exp) { | |
553 | case scm_tc16_big: | |
554 | scm_bigprint (exp, port, pstate); | |
555 | break; | |
556 | case scm_tc16_real: | |
557 | scm_print_real (exp, port, pstate); | |
558 | break; | |
559 | case scm_tc16_complex: | |
560 | scm_print_complex (exp, port, pstate); | |
561 | break; | |
f92e85f7 MV |
562 | case scm_tc16_fraction: |
563 | scm_i_print_fraction (exp, port, pstate); | |
564 | break; | |
534c55a9 DH |
565 | } |
566 | break; | |
9c44cd45 MG |
567 | case scm_tc7_string: |
568 | if (SCM_WRITINGP (pstate)) | |
569 | { | |
07f49ac7 | 570 | size_t len, i; |
9c44cd45 | 571 | |
f4bc4e59 | 572 | display_character ('"', port, iconveh_question_mark); |
9c44cd45 MG |
573 | len = scm_i_string_length (exp); |
574 | for (i = 0; i < len; ++i) | |
07f49ac7 LC |
575 | write_character (scm_i_string_ref (exp, i), port, 1); |
576 | ||
f4bc4e59 | 577 | display_character ('"', port, iconveh_question_mark); |
9c44cd45 MG |
578 | scm_remember_upto_here_1 (exp); |
579 | } | |
580 | else | |
f4bc4e59 LC |
581 | { |
582 | size_t len, printed; | |
583 | ||
584 | len = scm_i_string_length (exp); | |
585 | printed = display_string (scm_i_string_data (exp), | |
586 | scm_i_is_narrow_string (exp), | |
587 | len, port, | |
588 | scm_i_get_conversion_strategy (port)); | |
589 | if (SCM_UNLIKELY (printed < len)) | |
f4bc4e59 LC |
590 | scm_encoding_error (__func__, errno, |
591 | "cannot convert to output locale", | |
6851d3be | 592 | port, scm_c_string_ref (exp, printed)); |
f4bc4e59 LC |
593 | } |
594 | ||
9c44cd45 MG |
595 | scm_remember_upto_here_1 (exp); |
596 | break; | |
28b06554 | 597 | case scm_tc7_symbol: |
cc95e00a | 598 | if (scm_i_symbol_is_interned (exp)) |
9ff28a13 | 599 | { |
e23106d5 | 600 | scm_i_print_symbol_name (exp, port); |
9ff28a13 MV |
601 | scm_remember_upto_here_1 (exp); |
602 | } | |
603 | else | |
604 | { | |
0607ebbf | 605 | scm_puts_unlocked ("#<uninterned-symbol ", port); |
e23106d5 | 606 | scm_i_print_symbol_name (exp, port); |
0607ebbf | 607 | scm_putc_unlocked (' ', port); |
0345e278 | 608 | scm_uintprint (SCM_UNPACK (exp), 16, port); |
0607ebbf | 609 | scm_putc_unlocked ('>', port); |
9ff28a13 | 610 | } |
6662998f | 611 | break; |
e5aca4b5 MV |
612 | case scm_tc7_variable: |
613 | scm_i_variable_print (exp, port, pstate); | |
614 | break; | |
2fb924f6 AW |
615 | case scm_tc7_program: |
616 | scm_i_program_print (exp, port, pstate); | |
617 | break; | |
5b46a8c2 LC |
618 | case scm_tc7_pointer: |
619 | scm_i_pointer_print (exp, port, pstate); | |
e2c2a699 | 620 | break; |
c99de5aa AW |
621 | case scm_tc7_hashtable: |
622 | scm_i_hashtable_print (exp, port, pstate); | |
623 | break; | |
26b26354 AW |
624 | case scm_tc7_weak_set: |
625 | scm_i_weak_set_print (exp, port, pstate); | |
626 | break; | |
7005c60f AW |
627 | case scm_tc7_weak_table: |
628 | scm_i_weak_table_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); |
0607ebbf | 656 | scm_puts_unlocked ("#w(", port); |
0f2d19dd JB |
657 | goto common_vector_printer; |
658 | ||
807e5a66 LC |
659 | case scm_tc7_bytevector: |
660 | scm_i_print_bytevector (exp, port, pstate); | |
661 | break; | |
0f2d19dd | 662 | case scm_tc7_vector: |
c62fbfe1 | 663 | ENTER_NESTED_DATA (pstate, exp, circref); |
0607ebbf | 664 | scm_puts_unlocked ("#(", port); |
0f2d19dd | 665 | common_vector_printer: |
9fbaf27c | 666 | { |
c014a02e | 667 | register long i; |
4057a3e0 | 668 | long last = SCM_SIMPLE_VECTOR_LENGTH (exp) - 1; |
9fbaf27c | 669 | int cutp = 0; |
4057a3e0 MV |
670 | if (pstate->fancyp |
671 | && SCM_SIMPLE_VECTOR_LENGTH (exp) > pstate->length) | |
9fbaf27c MD |
672 | { |
673 | last = pstate->length - 1; | |
674 | cutp = 1; | |
675 | } | |
a141db86 AW |
676 | for (i = 0; i < last; ++i) |
677 | { | |
678 | scm_iprin1 (scm_c_vector_ref (exp, i), port, pstate); | |
0607ebbf | 679 | scm_putc_unlocked (' ', port); |
a141db86 | 680 | } |
9fbaf27c MD |
681 | if (i == last) |
682 | { | |
683 | /* CHECK_INTS; */ | |
c367c4b4 | 684 | scm_iprin1 (scm_c_vector_ref (exp, i), port, pstate); |
9fbaf27c MD |
685 | } |
686 | if (cutp) | |
0607ebbf AW |
687 | scm_puts_unlocked (" ...", port); |
688 | scm_putc_unlocked (')', port); | |
9fbaf27c | 689 | } |
c62fbfe1 | 690 | EXIT_NESTED_DATA (pstate); |
0f2d19dd | 691 | break; |
0f2d19dd | 692 | case scm_tc7_port: |
5ca6dc39 | 693 | { |
62bd5d66 AW |
694 | scm_t_ptob_descriptor *ptob = SCM_PORT_DESCRIPTOR (exp); |
695 | if (ptob->print && ptob->print (exp, port, pstate)) | |
a51ea417 | 696 | break; |
5ca6dc39 JB |
697 | goto punk; |
698 | } | |
699 | case scm_tc7_smob: | |
7a7f7c53 DH |
700 | ENTER_NESTED_DATA (pstate, exp, circref); |
701 | SCM_SMOB_DESCRIPTOR (exp).print (exp, port, pstate); | |
702 | EXIT_NESTED_DATA (pstate); | |
703 | break; | |
0f2d19dd | 704 | default: |
314b8716 | 705 | /* case scm_tcs_closures: */ |
a51ea417 MD |
706 | punk: |
707 | scm_ipruk ("type", exp, port); | |
0f2d19dd JB |
708 | } |
709 | } | |
710 | } | |
711 | ||
c62fbfe1 MD |
712 | /* Print states are necessary for circular reference safe printing. |
713 | * They are also expensive to allocate. Therefore print states are | |
714 | * kept in a pool so that they can be reused. | |
715 | */ | |
1cc91f1b | 716 | |
bb35f315 MV |
717 | /* The PORT argument can also be a print-state/port pair, which will |
718 | * then be used instead of allocating a new print state. This is | |
719 | * useful for continuing a chain of print calls from Scheme. */ | |
720 | ||
a51ea417 | 721 | void |
1bbd0b84 | 722 | scm_prin1 (SCM exp, SCM port, int writingp) |
a51ea417 | 723 | { |
c4f37e80 MV |
724 | SCM handle = SCM_BOOL_F; /* Will GC protect the handle whilst unlinked */ |
725 | SCM pstate_scm; | |
c62fbfe1 | 726 | scm_print_state *pstate; |
15635be5 | 727 | int old_writingp; |
c62fbfe1 | 728 | |
bb35f315 MV |
729 | /* If PORT is a print-state/port pair, use that. Else create a new |
730 | print-state. */ | |
c4f37e80 | 731 | |
0c95b57d | 732 | if (SCM_PORT_WITH_PS_P (port)) |
bb35f315 | 733 | { |
52235e71 MD |
734 | pstate_scm = SCM_PORT_WITH_PS_PS (port); |
735 | port = SCM_PORT_WITH_PS_PORT (port); | |
bb35f315 MV |
736 | } |
737 | else | |
c62fbfe1 | 738 | { |
c4f37e80 | 739 | /* First try to allocate a print state from the pool */ |
9de87eea | 740 | scm_i_pthread_mutex_lock (&print_state_mutex); |
d2e53ed6 | 741 | if (!scm_is_null (print_state_pool)) |
c4f37e80 | 742 | { |
d5cf5324 DH |
743 | handle = print_state_pool; |
744 | print_state_pool = SCM_CDR (print_state_pool); | |
c4f37e80 | 745 | } |
9de87eea | 746 | scm_i_pthread_mutex_unlock (&print_state_mutex); |
7888309b | 747 | if (scm_is_false (handle)) |
d5cf5324 | 748 | handle = scm_list_1 (make_print_state ()); |
c4f37e80 | 749 | pstate_scm = SCM_CAR (handle); |
c62fbfe1 | 750 | } |
c62fbfe1 | 751 | |
c4f37e80 | 752 | pstate = SCM_PRINT_STATE (pstate_scm); |
15635be5 | 753 | old_writingp = pstate->writingp; |
c62fbfe1 MD |
754 | pstate->writingp = writingp; |
755 | scm_iprin1 (exp, port, pstate); | |
15635be5 | 756 | pstate->writingp = old_writingp; |
c62fbfe1 | 757 | |
bb35f315 MV |
758 | /* Return print state to pool if it has been created above and |
759 | hasn't escaped to Scheme. */ | |
760 | ||
7888309b | 761 | if (scm_is_true (handle) && !pstate->revealed) |
c4f37e80 | 762 | { |
9de87eea | 763 | scm_i_pthread_mutex_lock (&print_state_mutex); |
d5cf5324 DH |
764 | SCM_SETCDR (handle, print_state_pool); |
765 | print_state_pool = handle; | |
9de87eea | 766 | scm_i_pthread_mutex_unlock (&print_state_mutex); |
c4f37e80 | 767 | } |
a51ea417 MD |
768 | } |
769 | ||
f4bc4e59 LC |
770 | /* Convert codepoint CH to UTF-8 and store the result in UTF8. Return |
771 | the number of bytes of the UTF-8-encoded string. */ | |
772 | static size_t | |
773 | codepoint_to_utf8 (scm_t_wchar ch, scm_t_uint8 utf8[4]) | |
9c44cd45 | 774 | { |
f4bc4e59 LC |
775 | size_t len; |
776 | scm_t_uint32 codepoint; | |
777 | ||
778 | codepoint = (scm_t_uint32) ch; | |
07f49ac7 | 779 | |
f4bc4e59 | 780 | if (codepoint <= 0x7f) |
07f49ac7 | 781 | { |
f4bc4e59 LC |
782 | len = 1; |
783 | utf8[0] = (scm_t_uint8) codepoint; | |
784 | } | |
785 | else if (codepoint <= 0x7ffUL) | |
786 | { | |
787 | len = 2; | |
788 | utf8[0] = 0xc0 | (codepoint >> 6); | |
789 | utf8[1] = 0x80 | (codepoint & 0x3f); | |
790 | } | |
791 | else if (codepoint <= 0xffffUL) | |
792 | { | |
793 | len = 3; | |
794 | utf8[0] = 0xe0 | (codepoint >> 12); | |
795 | utf8[1] = 0x80 | ((codepoint >> 6) & 0x3f); | |
796 | utf8[2] = 0x80 | (codepoint & 0x3f); | |
07f49ac7 LC |
797 | } |
798 | else | |
799 | { | |
f4bc4e59 LC |
800 | len = 4; |
801 | utf8[0] = 0xf0 | (codepoint >> 18); | |
802 | utf8[1] = 0x80 | ((codepoint >> 12) & 0x3f); | |
803 | utf8[2] = 0x80 | ((codepoint >> 6) & 0x3f); | |
804 | utf8[3] = 0x80 | (codepoint & 0x3f); | |
805 | } | |
806 | ||
807 | return len; | |
808 | } | |
809 | ||
f4bc4e59 LC |
810 | #define STR_REF(s, x) \ |
811 | (narrow_p \ | |
812 | ? (scm_t_wchar) ((unsigned char *) (s))[x] \ | |
813 | : ((scm_t_wchar *) (s))[x]) | |
814 | ||
7b292a9d LC |
815 | /* Write STR to PORT as UTF-8. STR is a LEN-codepoint string; it is |
816 | narrow if NARROW_P is true, wide otherwise. Return LEN. */ | |
817 | static size_t | |
818 | display_string_as_utf8 (const void *str, int narrow_p, size_t len, | |
819 | SCM port) | |
820 | { | |
821 | size_t printed = 0; | |
822 | ||
823 | while (len > printed) | |
824 | { | |
825 | size_t utf8_len, i; | |
826 | char *input, utf8_buf[256]; | |
827 | ||
828 | /* Convert STR to UTF-8. */ | |
829 | for (i = printed, utf8_len = 0, input = utf8_buf; | |
830 | i < len && utf8_len + 4 < sizeof (utf8_buf); | |
831 | i++) | |
832 | { | |
833 | utf8_len += codepoint_to_utf8 (STR_REF (str, i), | |
834 | (scm_t_uint8 *) input); | |
835 | input = utf8_buf + utf8_len; | |
836 | } | |
837 | ||
838 | /* INPUT was successfully converted, entirely; print the | |
839 | result. */ | |
f209aeee | 840 | scm_lfwrite_unlocked (utf8_buf, utf8_len, port); |
7b292a9d LC |
841 | printed += i - printed; |
842 | } | |
843 | ||
844 | assert (printed == len); | |
845 | ||
846 | return len; | |
847 | } | |
848 | ||
849 | /* Convert STR through PORT's output conversion descriptor and write the | |
850 | output to PORT. Return the number of codepoints written. */ | |
851 | static size_t | |
852 | display_string_using_iconv (const void *str, int narrow_p, size_t len, | |
853 | SCM port, | |
854 | scm_t_string_failed_conversion_handler strategy) | |
855 | { | |
f4bc4e59 LC |
856 | size_t printed; |
857 | scm_t_port *pt; | |
858 | ||
859 | pt = SCM_PTAB_ENTRY (port); | |
860 | ||
f4bc4e59 LC |
861 | printed = 0; |
862 | ||
863 | while (len > printed) | |
864 | { | |
865 | size_t done, utf8_len, input_left, output_left, i; | |
866 | size_t codepoints_read, output_len; | |
867 | char *input, *output; | |
868 | char utf8_buf[256], encoded_output[256]; | |
869 | size_t offsets[256]; | |
870 | ||
871 | /* Convert STR to UTF-8. */ | |
872 | for (i = printed, utf8_len = 0, input = utf8_buf; | |
873 | i < len && utf8_len + 4 < sizeof (utf8_buf); | |
874 | i++) | |
07f49ac7 | 875 | { |
f4bc4e59 LC |
876 | offsets[utf8_len] = i; |
877 | utf8_len += codepoint_to_utf8 (STR_REF (str, i), | |
878 | (scm_t_uint8 *) input); | |
879 | input = utf8_buf + utf8_len; | |
880 | } | |
881 | ||
882 | input = utf8_buf; | |
883 | input_left = utf8_len; | |
884 | ||
885 | output = encoded_output; | |
886 | output_left = sizeof (encoded_output); | |
887 | ||
888 | done = iconv (pt->output_cd, &input, &input_left, | |
889 | &output, &output_left); | |
07f49ac7 | 890 | |
f4bc4e59 LC |
891 | output_len = sizeof (encoded_output) - output_left; |
892 | ||
893 | if (SCM_UNLIKELY (done == (size_t) -1)) | |
894 | { | |
b2548e23 AW |
895 | int errno_save = errno; |
896 | ||
f4bc4e59 LC |
897 | /* Reset the `iconv' state. */ |
898 | iconv (pt->output_cd, NULL, NULL, NULL, NULL); | |
899 | ||
7174bc08 | 900 | /* Print the OUTPUT_LEN bytes successfully converted. */ |
f209aeee | 901 | scm_lfwrite_unlocked (encoded_output, output_len, port); |
7174bc08 LC |
902 | |
903 | /* See how many input codepoints these OUTPUT_LEN bytes | |
904 | corresponds to. */ | |
905 | codepoints_read = offsets[input - utf8_buf] - printed; | |
906 | printed += codepoints_read; | |
907 | ||
b2548e23 | 908 | if (errno_save == EILSEQ && |
f4bc4e59 | 909 | strategy != SCM_FAILED_CONVERSION_ERROR) |
07f49ac7 | 910 | { |
f4bc4e59 LC |
911 | /* Conversion failed somewhere in INPUT and we want to |
912 | escape or substitute the offending input character. */ | |
913 | ||
f4bc4e59 | 914 | if (strategy == SCM_FAILED_CONVERSION_ESCAPE_SEQUENCE) |
f1ee6d54 | 915 | { |
f4bc4e59 LC |
916 | scm_t_wchar ch; |
917 | ||
918 | /* Find CH, the offending codepoint, and escape it. */ | |
919 | ch = STR_REF (str, offsets[input - utf8_buf]); | |
920 | write_character_escaped (ch, 1, port); | |
f1ee6d54 | 921 | } |
07f49ac7 | 922 | else |
f4bc4e59 LC |
923 | /* STRATEGY is `SCM_FAILED_CONVERSION_QUESTION_MARK'. */ |
924 | display_string ("?", 1, 1, port, strategy); | |
9c44cd45 | 925 | |
f4bc4e59 LC |
926 | printed++; |
927 | } | |
928 | else | |
929 | /* Something bad happened that we can't handle: bail out. */ | |
930 | break; | |
07f49ac7 LC |
931 | } |
932 | else | |
f4bc4e59 LC |
933 | { |
934 | /* INPUT was successfully converted, entirely; print the | |
935 | result. */ | |
f209aeee | 936 | scm_lfwrite_unlocked (encoded_output, output_len, port); |
f4bc4e59 LC |
937 | codepoints_read = i - printed; |
938 | printed += codepoints_read; | |
939 | } | |
07f49ac7 LC |
940 | } |
941 | ||
942 | return printed; | |
7b292a9d LC |
943 | } |
944 | ||
f4bc4e59 | 945 | #undef STR_REF |
7b292a9d LC |
946 | |
947 | /* Display the LEN codepoints in STR to PORT according to STRATEGY; | |
948 | return the number of codepoints successfully displayed. If NARROW_P, | |
949 | then STR is interpreted as a sequence of `char', denoting a Latin-1 | |
950 | string; otherwise it's interpreted as a sequence of | |
951 | `scm_t_wchar'. */ | |
952 | static size_t | |
953 | display_string (const void *str, int narrow_p, | |
954 | size_t len, SCM port, | |
955 | scm_t_string_failed_conversion_handler strategy) | |
956 | ||
957 | { | |
958 | scm_t_port *pt; | |
959 | ||
960 | pt = SCM_PTAB_ENTRY (port); | |
961 | ||
962 | if (pt->output_cd == (iconv_t) -1) | |
963 | /* Initialize the conversion descriptors, if needed. */ | |
964 | scm_i_set_port_encoding_x (port, pt->encoding); | |
965 | ||
966 | /* FIXME: In 2.1, add a flag to determine whether a port is UTF-8. */ | |
967 | if (pt->output_cd == (iconv_t) -1) | |
968 | return display_string_as_utf8 (str, narrow_p, len, port); | |
969 | else | |
970 | return display_string_using_iconv (str, narrow_p, len, | |
971 | port, strategy); | |
f4bc4e59 LC |
972 | } |
973 | ||
974 | /* Attempt to display CH to PORT according to STRATEGY. Return non-zero | |
975 | if CH was successfully displayed, zero otherwise (e.g., if it was not | |
976 | representable in PORT's encoding.) */ | |
977 | static int | |
978 | display_character (scm_t_wchar ch, SCM port, | |
979 | scm_t_string_failed_conversion_handler strategy) | |
980 | { | |
981 | return display_string (&ch, 0, 1, port, strategy) == 1; | |
07f49ac7 LC |
982 | } |
983 | ||
33d92fe6 LC |
984 | /* Attempt to pretty-print CH, a combining character, to PORT. Return |
985 | zero upon failure, non-zero otherwise. The idea is to print CH above | |
986 | a dotted circle to make it more visible. */ | |
987 | static int | |
988 | write_combining_character (scm_t_wchar ch, SCM port) | |
989 | { | |
f4bc4e59 LC |
990 | scm_t_wchar str[2]; |
991 | ||
992 | str[0] = SCM_CODEPOINT_DOTTED_CIRCLE; | |
993 | str[1] = ch; | |
994 | ||
995 | return display_string (str, 0, 2, port, iconveh_error) == 2; | |
996 | } | |
33d92fe6 | 997 | |
f4bc4e59 LC |
998 | /* Write CH to PORT in its escaped form, using the string escape syntax |
999 | if STRING_ESCAPES_P is non-zero. */ | |
1000 | static void | |
1001 | write_character_escaped (scm_t_wchar ch, int string_escapes_p, SCM port) | |
1002 | { | |
1003 | if (string_escapes_p) | |
33d92fe6 | 1004 | { |
f4bc4e59 LC |
1005 | /* Represent CH using the in-string escape syntax. */ |
1006 | ||
1007 | static const char hex[] = "0123456789abcdef"; | |
1008 | static const char escapes[7] = "abtnvfr"; | |
1009 | char buf[9]; | |
1010 | ||
1011 | if (ch >= 0x07 && ch <= 0x0D && ch != 0x0A) | |
33d92fe6 | 1012 | { |
f4bc4e59 LC |
1013 | /* Use special escapes for some C0 controls. */ |
1014 | buf[0] = '\\'; | |
1015 | buf[1] = escapes[ch - 0x07]; | |
f209aeee | 1016 | scm_lfwrite_unlocked (buf, 2, port); |
f4bc4e59 LC |
1017 | } |
1018 | else if (!SCM_R6RS_ESCAPES_P) | |
1019 | { | |
1020 | if (ch <= 0xFF) | |
1021 | { | |
1022 | buf[0] = '\\'; | |
1023 | buf[1] = 'x'; | |
1024 | buf[2] = hex[ch / 16]; | |
1025 | buf[3] = hex[ch % 16]; | |
f209aeee | 1026 | scm_lfwrite_unlocked (buf, 4, port); |
f4bc4e59 LC |
1027 | } |
1028 | else if (ch <= 0xFFFF) | |
1029 | { | |
1030 | buf[0] = '\\'; | |
1031 | buf[1] = 'u'; | |
1032 | buf[2] = hex[(ch & 0xF000) >> 12]; | |
1033 | buf[3] = hex[(ch & 0xF00) >> 8]; | |
1034 | buf[4] = hex[(ch & 0xF0) >> 4]; | |
1035 | buf[5] = hex[(ch & 0xF)]; | |
f209aeee | 1036 | scm_lfwrite_unlocked (buf, 6, port); |
f4bc4e59 LC |
1037 | } |
1038 | else if (ch > 0xFFFF) | |
1039 | { | |
1040 | buf[0] = '\\'; | |
1041 | buf[1] = 'U'; | |
1042 | buf[2] = hex[(ch & 0xF00000) >> 20]; | |
1043 | buf[3] = hex[(ch & 0xF0000) >> 16]; | |
1044 | buf[4] = hex[(ch & 0xF000) >> 12]; | |
1045 | buf[5] = hex[(ch & 0xF00) >> 8]; | |
1046 | buf[6] = hex[(ch & 0xF0) >> 4]; | |
1047 | buf[7] = hex[(ch & 0xF)]; | |
f209aeee | 1048 | scm_lfwrite_unlocked (buf, 8, port); |
f4bc4e59 | 1049 | } |
33d92fe6 LC |
1050 | } |
1051 | else | |
f4bc4e59 LC |
1052 | { |
1053 | /* Print an R6RS variable-length hex escape: "\xNNNN;". */ | |
1054 | scm_t_wchar ch2 = ch; | |
1055 | ||
1056 | int i = 8; | |
1057 | buf[i] = ';'; | |
1058 | i --; | |
1059 | if (ch == 0) | |
1060 | buf[i--] = '0'; | |
1061 | else | |
1062 | while (ch2 > 0) | |
1063 | { | |
1064 | buf[i] = hex[ch2 & 0xF]; | |
1065 | ch2 >>= 4; | |
1066 | i --; | |
1067 | } | |
1068 | buf[i] = 'x'; | |
1069 | i --; | |
1070 | buf[i] = '\\'; | |
f209aeee | 1071 | scm_lfwrite_unlocked (buf + i, 9 - i, port); |
f4bc4e59 | 1072 | } |
33d92fe6 LC |
1073 | } |
1074 | else | |
f4bc4e59 LC |
1075 | { |
1076 | /* Represent CH using the character escape syntax. */ | |
1077 | const char *name; | |
33d92fe6 | 1078 | |
f4bc4e59 LC |
1079 | name = scm_i_charname (SCM_MAKE_CHAR (ch)); |
1080 | if (name != NULL) | |
0607ebbf | 1081 | scm_puts_unlocked (name, port); |
f4bc4e59 LC |
1082 | else |
1083 | PRINT_CHAR_ESCAPE (ch, port); | |
1084 | } | |
33d92fe6 LC |
1085 | } |
1086 | ||
07f49ac7 LC |
1087 | /* Write CH to PORT, escaping it if it's non-graphic or not |
1088 | representable in PORT's encoding. If STRING_ESCAPES_P is true and CH | |
1089 | needs to be escaped, it is escaped using the in-string escape syntax; | |
1090 | otherwise the character escape syntax is used. */ | |
1091 | static void | |
1092 | write_character (scm_t_wchar ch, SCM port, int string_escapes_p) | |
1093 | { | |
1094 | int printed = 0; | |
f4bc4e59 LC |
1095 | scm_t_string_failed_conversion_handler strategy; |
1096 | ||
1097 | strategy = scm_i_get_conversion_strategy (port); | |
07f49ac7 LC |
1098 | |
1099 | if (string_escapes_p) | |
1100 | { | |
1101 | /* Check if CH deserves special treatment. */ | |
1102 | if (ch == '"' || ch == '\\') | |
1103 | { | |
f4bc4e59 LC |
1104 | display_character ('\\', port, iconveh_question_mark); |
1105 | display_character (ch, port, strategy); | |
07f49ac7 LC |
1106 | printed = 1; |
1107 | } | |
8500b186 AW |
1108 | else if (ch == '\n' && SCM_PRINT_ESCAPE_NEWLINES_P) |
1109 | { | |
1110 | display_character ('\\', port, iconveh_question_mark); | |
1111 | display_character ('n', port, strategy); | |
1112 | printed = 1; | |
1113 | } | |
07f49ac7 LC |
1114 | else if (ch == ' ' || ch == '\n') |
1115 | { | |
f4bc4e59 | 1116 | display_character (ch, port, strategy); |
07f49ac7 LC |
1117 | printed = 1; |
1118 | } | |
1119 | } | |
1120 | else | |
33d92fe6 | 1121 | { |
f4bc4e59 | 1122 | display_string ("#\\", 1, 2, port, iconveh_question_mark); |
33d92fe6 LC |
1123 | |
1124 | if (uc_combining_class (ch) != UC_CCC_NR) | |
1125 | /* Character is a combining character, so attempt to | |
1126 | pretty-print it. */ | |
1127 | printed = write_combining_character (ch, port); | |
1128 | } | |
07f49ac7 LC |
1129 | |
1130 | if (!printed | |
1131 | && uc_is_general_category_withtable (ch, | |
1132 | UC_CATEGORY_MASK_L | | |
1133 | UC_CATEGORY_MASK_M | | |
1134 | UC_CATEGORY_MASK_N | | |
1135 | UC_CATEGORY_MASK_P | | |
1136 | UC_CATEGORY_MASK_S)) | |
1137 | /* CH is graphic; attempt to display it. */ | |
1138 | printed = display_character (ch, port, iconveh_error); | |
1139 | ||
1140 | if (!printed) | |
f4bc4e59 LC |
1141 | /* CH isn't graphic or cannot be represented in PORT's encoding. */ |
1142 | write_character_escaped (ch, string_escapes_p, port); | |
9c44cd45 | 1143 | } |
0f2d19dd JB |
1144 | |
1145 | /* Print an integer. | |
1146 | */ | |
1cc91f1b | 1147 | |
0f2d19dd | 1148 | void |
a406c9e9 | 1149 | scm_intprint (scm_t_intmax n, int radix, SCM port) |
0f2d19dd JB |
1150 | { |
1151 | char num_buf[SCM_INTBUFLEN]; | |
f209aeee | 1152 | scm_lfwrite_unlocked (num_buf, scm_iint2str (n, radix, num_buf), port); |
0f2d19dd JB |
1153 | } |
1154 | ||
a406c9e9 MV |
1155 | void |
1156 | scm_uintprint (scm_t_uintmax n, int radix, SCM port) | |
1157 | { | |
1158 | char num_buf[SCM_INTBUFLEN]; | |
f209aeee | 1159 | scm_lfwrite_unlocked (num_buf, scm_iuint2str (n, radix, num_buf), port); |
a406c9e9 MV |
1160 | } |
1161 | ||
0f2d19dd JB |
1162 | /* Print an object of unrecognized type. |
1163 | */ | |
1cc91f1b | 1164 | |
0f2d19dd | 1165 | void |
1bbd0b84 | 1166 | scm_ipruk (char *hdr, SCM ptr, SCM port) |
0f2d19dd | 1167 | { |
0607ebbf AW |
1168 | scm_puts_unlocked ("#<unknown-", port); |
1169 | scm_puts_unlocked (hdr, port); | |
26224b3f | 1170 | if (1) /* (scm_in_heap_p (ptr)) */ /* FIXME */ |
0f2d19dd | 1171 | { |
0607ebbf | 1172 | scm_puts_unlocked (" (0x", port); |
0345e278 | 1173 | scm_uintprint (SCM_CELL_WORD_0 (ptr), 16, port); |
0607ebbf | 1174 | scm_puts_unlocked (" . 0x", port); |
0345e278 | 1175 | scm_uintprint (SCM_CELL_WORD_1 (ptr), 16, port); |
0607ebbf | 1176 | scm_puts_unlocked (") @", port); |
0f2d19dd | 1177 | } |
0607ebbf | 1178 | scm_puts_unlocked (" 0x", port); |
0345e278 | 1179 | scm_uintprint (SCM_UNPACK (ptr), 16, port); |
0607ebbf | 1180 | scm_putc_unlocked ('>', port); |
0f2d19dd JB |
1181 | } |
1182 | ||
1cc91f1b | 1183 | |
904a077d | 1184 | /* Print a list. |
22a52da1 | 1185 | */ |
0f2d19dd | 1186 | void |
34d19ef6 | 1187 | scm_iprlist (char *hdr, SCM exp, int tlr, SCM port, scm_print_state *pstate) |
0f2d19dd | 1188 | { |
c62fbfe1 | 1189 | register SCM hare, tortoise; |
c014a02e | 1190 | long floor = pstate->top - 2; |
0607ebbf | 1191 | scm_puts_unlocked (hdr, port); |
0f2d19dd | 1192 | /* CHECK_INTS; */ |
c62fbfe1 MD |
1193 | if (pstate->fancyp) |
1194 | goto fancy_printing; | |
1195 | ||
1196 | /* Run a hare and tortoise so that total time complexity will be | |
1197 | O(depth * N) instead of O(N^2). */ | |
1198 | hare = SCM_CDR (exp); | |
1199 | tortoise = exp; | |
d2e53ed6 | 1200 | while (scm_is_pair (hare)) |
c62fbfe1 | 1201 | { |
bc36d050 | 1202 | if (scm_is_eq (hare, tortoise)) |
c62fbfe1 MD |
1203 | goto fancy_printing; |
1204 | hare = SCM_CDR (hare); | |
d2e53ed6 | 1205 | if (!scm_is_pair (hare)) |
c62fbfe1 MD |
1206 | break; |
1207 | hare = SCM_CDR (hare); | |
1208 | tortoise = SCM_CDR (tortoise); | |
1209 | } | |
1210 | ||
1211 | /* No cdr cycles intrinsic to this list */ | |
1212 | scm_iprin1 (SCM_CAR (exp), port, pstate); | |
d2e53ed6 | 1213 | for (exp = SCM_CDR (exp); scm_is_pair (exp); exp = SCM_CDR (exp)) |
0f2d19dd | 1214 | { |
c014a02e | 1215 | register long i; |
5ca6dc39 | 1216 | |
c62fbfe1 | 1217 | for (i = floor; i >= 0; --i) |
509759dd | 1218 | if (scm_is_eq (PSTATE_STACK_REF(pstate, i), exp)) |
c62fbfe1 MD |
1219 | goto circref; |
1220 | PUSH_REF (pstate, exp); | |
0607ebbf | 1221 | scm_putc_unlocked (' ', port); |
0f2d19dd | 1222 | /* CHECK_INTS; */ |
c62fbfe1 | 1223 | scm_iprin1 (SCM_CAR (exp), port, pstate); |
0f2d19dd | 1224 | } |
c96d76b8 | 1225 | if (!SCM_NULL_OR_NIL_P (exp)) |
0f2d19dd | 1226 | { |
0607ebbf | 1227 | scm_puts_unlocked (" . ", port); |
c62fbfe1 | 1228 | scm_iprin1 (exp, port, pstate); |
0f2d19dd | 1229 | } |
c62fbfe1 | 1230 | |
a51ea417 | 1231 | end: |
0607ebbf | 1232 | scm_putc_unlocked (tlr, port); |
c62fbfe1 | 1233 | pstate->top = floor + 2; |
a51ea417 | 1234 | return; |
c62fbfe1 MD |
1235 | |
1236 | fancy_printing: | |
1237 | { | |
c014a02e | 1238 | long n = pstate->length; |
c62fbfe1 MD |
1239 | |
1240 | scm_iprin1 (SCM_CAR (exp), port, pstate); | |
1241 | exp = SCM_CDR (exp); --n; | |
d2e53ed6 | 1242 | for (; scm_is_pair (exp); exp = SCM_CDR (exp)) |
c62fbfe1 | 1243 | { |
c014a02e | 1244 | register unsigned long i; |
5ca6dc39 | 1245 | |
c62fbfe1 | 1246 | for (i = 0; i < pstate->top; ++i) |
509759dd | 1247 | if (scm_is_eq (PSTATE_STACK_REF(pstate, i), exp)) |
c62fbfe1 MD |
1248 | goto fancy_circref; |
1249 | if (pstate->fancyp) | |
1250 | { | |
1251 | if (n == 0) | |
1252 | { | |
0607ebbf | 1253 | scm_puts_unlocked (" ...", port); |
c62fbfe1 MD |
1254 | goto skip_tail; |
1255 | } | |
1256 | else | |
1257 | --n; | |
1258 | } | |
1259 | PUSH_REF(pstate, exp); | |
1260 | ++pstate->list_offset; | |
0607ebbf | 1261 | scm_putc_unlocked (' ', port); |
c62fbfe1 MD |
1262 | /* CHECK_INTS; */ |
1263 | scm_iprin1 (SCM_CAR (exp), port, pstate); | |
1264 | } | |
1265 | } | |
c96d76b8 | 1266 | if (!SCM_NULL_OR_NIL_P (exp)) |
c62fbfe1 | 1267 | { |
0607ebbf | 1268 | scm_puts_unlocked (" . ", port); |
c62fbfe1 MD |
1269 | scm_iprin1 (exp, port, pstate); |
1270 | } | |
1271 | skip_tail: | |
1272 | pstate->list_offset -= pstate->top - floor - 2; | |
a51ea417 | 1273 | goto end; |
a51ea417 | 1274 | |
c62fbfe1 MD |
1275 | fancy_circref: |
1276 | pstate->list_offset -= pstate->top - floor - 2; | |
1277 | ||
1278 | circref: | |
0607ebbf | 1279 | scm_puts_unlocked (" . ", port); |
c62fbfe1 MD |
1280 | print_circref (port, pstate, exp); |
1281 | goto end; | |
0f2d19dd JB |
1282 | } |
1283 | ||
1284 | \f | |
1285 | ||
bb35f315 MV |
1286 | int |
1287 | scm_valid_oport_value_p (SCM val) | |
1288 | { | |
368cf54d GB |
1289 | return (SCM_OPOUTPORTP (val) |
1290 | || (SCM_PORT_WITH_PS_P (val) | |
1291 | && SCM_OPOUTPORTP (SCM_PORT_WITH_PS_PORT (val)))); | |
bb35f315 MV |
1292 | } |
1293 | ||
8b840115 | 1294 | /* SCM_GPROC(s_write, "write", 1, 1, 0, scm_write, g_write); */ |
1cc91f1b | 1295 | |
0f2d19dd | 1296 | SCM |
1bbd0b84 | 1297 | scm_write (SCM obj, SCM port) |
0f2d19dd JB |
1298 | { |
1299 | if (SCM_UNBNDP (port)) | |
9de87eea | 1300 | port = scm_current_output_port (); |
3eb7e6ee JB |
1301 | |
1302 | SCM_ASSERT (scm_valid_oport_value_p (port), port, SCM_ARG2, s_write); | |
bb35f315 | 1303 | |
215fe3a8 | 1304 | scm_dynwind_begin (0); |
92c0ebac | 1305 | scm_dynwind_lock_port (SCM_COERCE_OUTPORT (port)); |
a51ea417 | 1306 | scm_prin1 (obj, port, 1); |
215fe3a8 AW |
1307 | scm_dynwind_end (); |
1308 | ||
0f2d19dd JB |
1309 | return SCM_UNSPECIFIED; |
1310 | } | |
1311 | ||
1312 | ||
8b840115 | 1313 | /* SCM_GPROC(s_display, "display", 1, 1, 0, scm_display, g_display); */ |
1cc91f1b | 1314 | |
0f2d19dd | 1315 | SCM |
1bbd0b84 | 1316 | scm_display (SCM obj, SCM port) |
0f2d19dd JB |
1317 | { |
1318 | if (SCM_UNBNDP (port)) | |
9de87eea | 1319 | port = scm_current_output_port (); |
3eb7e6ee JB |
1320 | |
1321 | SCM_ASSERT (scm_valid_oport_value_p (port), port, SCM_ARG2, s_display); | |
bb35f315 | 1322 | |
215fe3a8 | 1323 | scm_dynwind_begin (0); |
92c0ebac | 1324 | scm_dynwind_lock_port (SCM_COERCE_OUTPORT (port)); |
a51ea417 | 1325 | scm_prin1 (obj, port, 0); |
215fe3a8 AW |
1326 | scm_dynwind_end (); |
1327 | ||
0f2d19dd JB |
1328 | return SCM_UNSPECIFIED; |
1329 | } | |
1330 | ||
70d63753 GB |
1331 | |
1332 | SCM_DEFINE (scm_simple_format, "simple-format", 2, 0, 1, | |
1333 | (SCM destination, SCM message, SCM args), | |
eca65e90 MG |
1334 | "Write @var{message} to @var{destination}, defaulting to\n" |
1335 | "the current output port.\n" | |
1336 | "@var{message} can contain @code{~A} (was @code{%s}) and\n" | |
1337 | "@code{~S} (was @code{%S}) escapes. When printed,\n" | |
1338 | "the escapes are replaced with corresponding members of\n" | |
1339 | "@var{ARGS}:\n" | |
1340 | "@code{~A} formats using @code{display} and @code{~S} formats\n" | |
1341 | "using @code{write}.\n" | |
1342 | "If @var{destination} is @code{#t}, then use the current output\n" | |
1343 | "port, if @var{destination} is @code{#f}, then return a string\n" | |
1344 | "containing the formatted text. Does not add a trailing newline.") | |
70d63753 GB |
1345 | #define FUNC_NAME s_scm_simple_format |
1346 | { | |
dfd03fb9 | 1347 | SCM port, answer = SCM_UNSPECIFIED; |
70d63753 GB |
1348 | int fReturnString = 0; |
1349 | int writingp; | |
889975e5 | 1350 | size_t start, p, end; |
70d63753 | 1351 | |
bc36d050 | 1352 | if (scm_is_eq (destination, SCM_BOOL_T)) |
daba1a71 | 1353 | { |
9de87eea | 1354 | destination = port = scm_current_output_port (); |
daba1a71 | 1355 | } |
7888309b | 1356 | else if (scm_is_false (destination)) |
daba1a71 MD |
1357 | { |
1358 | fReturnString = 1; | |
0b2c2ba3 | 1359 | port = scm_mkstrport (SCM_INUM0, SCM_BOOL_F, |
dfd03fb9 MD |
1360 | SCM_OPN | SCM_WRTNG, |
1361 | FUNC_NAME); | |
1362 | destination = port; | |
daba1a71 MD |
1363 | } |
1364 | else | |
1365 | { | |
1366 | SCM_VALIDATE_OPORT_VALUE (1, destination); | |
dfd03fb9 | 1367 | port = SCM_COERCE_OUTPORT (destination); |
daba1a71 MD |
1368 | } |
1369 | SCM_VALIDATE_STRING (2, message); | |
af45e3b0 | 1370 | SCM_VALIDATE_REST_ARGUMENT (args); |
70d63753 | 1371 | |
889975e5 MG |
1372 | p = 0; |
1373 | start = 0; | |
1374 | end = scm_i_string_length (message); | |
b24b5e13 | 1375 | for (p = start; p != end; ++p) |
889975e5 | 1376 | if (scm_i_string_ref (message, p) == '~') |
70d63753 | 1377 | { |
b24b5e13 | 1378 | if (++p == end) |
6662998f MV |
1379 | break; |
1380 | ||
889975e5 | 1381 | switch (scm_i_string_ref (message, p)) |
6662998f MV |
1382 | { |
1383 | case 'A': case 'a': | |
1384 | writingp = 0; | |
1385 | break; | |
1386 | case 'S': case 's': | |
1387 | writingp = 1; | |
1388 | break; | |
1389 | case '~': | |
889975e5 | 1390 | scm_lfwrite_substr (message, start, p, port); |
6662998f MV |
1391 | start = p + 1; |
1392 | continue; | |
1393 | case '%': | |
889975e5 | 1394 | scm_lfwrite_substr (message, start, p - 1, port); |
dfd03fb9 | 1395 | scm_newline (port); |
6662998f MV |
1396 | start = p + 1; |
1397 | continue; | |
1398 | default: | |
1afff620 | 1399 | SCM_MISC_ERROR ("FORMAT: Unsupported format option ~~~A - use (ice-9 format) instead", |
889975e5 | 1400 | scm_list_1 (SCM_MAKE_CHAR (scm_i_string_ref (message, p)))); |
6662998f MV |
1401 | |
1402 | } | |
70d63753 | 1403 | |
6662998f | 1404 | |
d2e53ed6 | 1405 | if (!scm_is_pair (args)) |
1afff620 | 1406 | SCM_MISC_ERROR ("FORMAT: Missing argument for ~~~A", |
889975e5 | 1407 | scm_list_1 (SCM_MAKE_CHAR (scm_i_string_ref (message, p)))); |
6662998f | 1408 | |
889975e5 | 1409 | scm_lfwrite_substr (message, start, p - 1, port); |
dfd03fb9 | 1410 | /* we pass destination here */ |
70d63753 GB |
1411 | scm_prin1 (SCM_CAR (args), destination, writingp); |
1412 | args = SCM_CDR (args); | |
1413 | start = p + 1; | |
1414 | } | |
6662998f | 1415 | |
889975e5 | 1416 | scm_lfwrite_substr (message, start, p, port); |
bc36d050 | 1417 | if (!scm_is_eq (args, SCM_EOL)) |
1afff620 KN |
1418 | SCM_MISC_ERROR ("FORMAT: ~A superfluous arguments", |
1419 | scm_list_1 (scm_length (args))); | |
70d63753 GB |
1420 | |
1421 | if (fReturnString) | |
1422 | answer = scm_strport_to_string (destination); | |
1423 | ||
daba1a71 | 1424 | return scm_return_first (answer, message); |
70d63753 GB |
1425 | } |
1426 | #undef FUNC_NAME | |
1427 | ||
1428 | ||
3b3b36dd | 1429 | SCM_DEFINE (scm_newline, "newline", 0, 1, 0, |
b450f070 | 1430 | (SCM port), |
8f85c0c6 NJ |
1431 | "Send a newline to @var{port}.\n" |
1432 | "If @var{port} is omitted, send to the current output port.") | |
1bbd0b84 | 1433 | #define FUNC_NAME s_scm_newline |
0f2d19dd JB |
1434 | { |
1435 | if (SCM_UNBNDP (port)) | |
9de87eea | 1436 | port = scm_current_output_port (); |
3eb7e6ee | 1437 | |
34d19ef6 | 1438 | SCM_VALIDATE_OPORT_VALUE (1, port); |
bb35f315 | 1439 | |
0607ebbf | 1440 | scm_putc_unlocked ('\n', SCM_COERCE_OUTPORT (port)); |
0f2d19dd JB |
1441 | return SCM_UNSPECIFIED; |
1442 | } | |
1bbd0b84 | 1443 | #undef FUNC_NAME |
0f2d19dd | 1444 | |
3b3b36dd | 1445 | SCM_DEFINE (scm_write_char, "write-char", 1, 1, 0, |
b450f070 | 1446 | (SCM chr, SCM port), |
eca65e90 | 1447 | "Send character @var{chr} to @var{port}.") |
1bbd0b84 | 1448 | #define FUNC_NAME s_scm_write_char |
0f2d19dd JB |
1449 | { |
1450 | if (SCM_UNBNDP (port)) | |
9de87eea | 1451 | port = scm_current_output_port (); |
3eb7e6ee | 1452 | |
34d19ef6 HWN |
1453 | SCM_VALIDATE_CHAR (1, chr); |
1454 | SCM_VALIDATE_OPORT_VALUE (2, port); | |
07f49ac7 LC |
1455 | |
1456 | port = SCM_COERCE_OUTPORT (port); | |
1457 | if (!display_character (SCM_CHAR (chr), port, | |
1458 | scm_i_get_conversion_strategy (port))) | |
1459 | scm_encoding_error (__func__, errno, | |
1460 | "cannot convert to output locale", | |
6851d3be | 1461 | port, chr); |
07f49ac7 | 1462 | |
0f2d19dd JB |
1463 | return SCM_UNSPECIFIED; |
1464 | } | |
1bbd0b84 | 1465 | #undef FUNC_NAME |
0f2d19dd | 1466 | |
0f2d19dd JB |
1467 | \f |
1468 | ||
bb35f315 | 1469 | /* Call back to Scheme code to do the printing of special objects |
c19bc088 MD |
1470 | * (like structs). SCM_PRINTER_APPLY applies PROC to EXP and a smob |
1471 | * containing PORT and PSTATE. This object can be used as the port for | |
1472 | * display/write etc to continue the current print chain. The REVEALED | |
1473 | * field of PSTATE is set to true to indicate that the print state has | |
1474 | * escaped to Scheme and thus has to be freed by the GC. | |
1475 | */ | |
1476 | ||
92c2555f | 1477 | scm_t_bits scm_tc16_port_with_ps; |
c19bc088 MD |
1478 | |
1479 | /* Print exactly as the port itself would */ | |
1480 | ||
1481 | static int | |
e841c3e0 | 1482 | port_with_ps_print (SCM obj, SCM port, scm_print_state *pstate) |
c19bc088 MD |
1483 | { |
1484 | obj = SCM_PORT_WITH_PS_PORT (obj); | |
62bd5d66 | 1485 | return SCM_PORT_DESCRIPTOR (obj)->print (obj, port, pstate); |
c19bc088 | 1486 | } |
c4f37e80 MV |
1487 | |
1488 | SCM | |
1bbd0b84 | 1489 | scm_printer_apply (SCM proc, SCM exp, SCM port, scm_print_state *pstate) |
c4f37e80 | 1490 | { |
bb35f315 | 1491 | pstate->revealed = 1; |
dfd03fb9 MD |
1492 | return scm_call_2 (proc, exp, |
1493 | scm_i_port_with_print_state (port, pstate->handle)); | |
c19bc088 MD |
1494 | } |
1495 | ||
dfd03fb9 | 1496 | SCM_DEFINE (scm_port_with_print_state, "port-with-print-state", 1, 1, 0, |
1bbd0b84 | 1497 | (SCM port, SCM pstate), |
71331188 | 1498 | "Create a new port which behaves like @var{port}, but with an\n" |
dfd03fb9 MD |
1499 | "included print state @var{pstate}. @var{pstate} is optional.\n" |
1500 | "If @var{pstate} isn't supplied and @var{port} already has\n" | |
1501 | "a print state, the old print state is reused.") | |
1bbd0b84 | 1502 | #define FUNC_NAME s_scm_port_with_print_state |
c19bc088 | 1503 | { |
34d19ef6 | 1504 | SCM_VALIDATE_OPORT_VALUE (1, port); |
dfd03fb9 MD |
1505 | if (!SCM_UNBNDP (pstate)) |
1506 | SCM_VALIDATE_PRINTSTATE (2, pstate); | |
1507 | return scm_i_port_with_print_state (port, pstate); | |
c19bc088 | 1508 | } |
1bbd0b84 | 1509 | #undef FUNC_NAME |
c19bc088 | 1510 | |
a1ec6916 | 1511 | SCM_DEFINE (scm_get_print_state, "get-print-state", 1, 0, 0, |
1bbd0b84 | 1512 | (SCM port), |
71331188 MG |
1513 | "Return the print state of the port @var{port}. If @var{port}\n" |
1514 | "has no associated print state, @code{#f} is returned.") | |
1bbd0b84 | 1515 | #define FUNC_NAME s_scm_get_print_state |
c19bc088 | 1516 | { |
368cf54d GB |
1517 | if (SCM_PORT_WITH_PS_P (port)) |
1518 | return SCM_PORT_WITH_PS_PS (port); | |
f5f2dcff | 1519 | if (SCM_OUTPUT_PORT_P (port)) |
368cf54d | 1520 | return SCM_BOOL_F; |
276dd677 | 1521 | SCM_WRONG_TYPE_ARG (1, port); |
c4f37e80 | 1522 | } |
1bbd0b84 | 1523 | #undef FUNC_NAME |
bb35f315 | 1524 | |
c4f37e80 | 1525 | \f |
1cc91f1b | 1526 | |
0f2d19dd JB |
1527 | void |
1528 | scm_init_print () | |
0f2d19dd | 1529 | { |
231dd356 | 1530 | SCM type; |
d5cf5324 | 1531 | |
231dd356 AW |
1532 | type = scm_make_vtable (scm_from_locale_string (SCM_PRINT_STATE_LAYOUT), |
1533 | SCM_BOOL_F); | |
4a655e50 | 1534 | scm_set_struct_vtable_name_x (type, scm_from_latin1_symbol ("print-state")); |
bb35f315 | 1535 | scm_print_state_vtable = type; |
c4f37e80 | 1536 | |
c19bc088 MD |
1537 | /* Don't want to bind a wrapper class in GOOPS, so pass 0 as arg1. */ |
1538 | scm_tc16_port_with_ps = scm_make_smob_type (0, 0); | |
e841c3e0 | 1539 | scm_set_smob_print (scm_tc16_port_with_ps, port_with_ps_print); |
81ae25da | 1540 | |
a0599745 | 1541 | #include "libguile/print.x" |
475fa9a5 | 1542 | |
8500b186 AW |
1543 | scm_init_opts (scm_print_options, scm_print_opts); |
1544 | scm_print_opts[SCM_PRINT_HIGHLIGHT_PREFIX_I].val = | |
1545 | SCM_UNPACK (scm_from_locale_string ("{")); | |
1546 | scm_print_opts[SCM_PRINT_HIGHLIGHT_SUFFIX_I].val = | |
1547 | SCM_UNPACK (scm_from_locale_string ("}")); | |
475fa9a5 | 1548 | scm_print_opts[SCM_PRINT_KEYWORD_STYLE_I].val = SCM_UNPACK (sym_reader); |
0f2d19dd | 1549 | } |
89e00824 ML |
1550 | |
1551 | /* | |
1552 | Local Variables: | |
1553 | c-file-style: "gnu" | |
1554 | End: | |
1555 | */ |