Commit | Line | Data |
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f4bc4e59 | 1 | /* Copyright (C) 1995-1999, 2000, 2001, 2002, 2003, 2004, 2006, 2008, |
e4598559 | 2 | * 2009, 2010, 2011, 2012, 2013 Free Software Foundation, Inc. |
f4bc4e59 | 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> |
96965a6e | 33 | #include <c-strcase.h> |
e6e2e95a | 34 | |
a0599745 MD |
35 | #include "libguile/_scm.h" |
36 | #include "libguile/chars.h" | |
a002f1a2 | 37 | #include "libguile/continuations.h" |
a0599745 | 38 | #include "libguile/smob.h" |
bbb2ecd1 | 39 | #include "libguile/control.h" |
a0599745 MD |
40 | #include "libguile/eval.h" |
41 | #include "libguile/macros.h" | |
42 | #include "libguile/procprop.h" | |
43 | #include "libguile/read.h" | |
44 | #include "libguile/weaks.h" | |
2fb924f6 | 45 | #include "libguile/programs.h" |
a0599745 MD |
46 | #include "libguile/alist.h" |
47 | #include "libguile/struct.h" | |
a0599745 | 48 | #include "libguile/ports.h" |
e4598559 | 49 | #include "libguile/ports-internal.h" |
a0599745 MD |
50 | #include "libguile/root.h" |
51 | #include "libguile/strings.h" | |
52 | #include "libguile/strports.h" | |
53 | #include "libguile/vectors.h" | |
327967ef | 54 | #include "libguile/numbers.h" |
6f3b0cc2 | 55 | #include "libguile/vm.h" |
a0599745 MD |
56 | |
57 | #include "libguile/validate.h" | |
58 | #include "libguile/print.h" | |
22fc179a HWN |
59 | |
60 | #include "libguile/private-options.h" | |
61 | ||
0f2d19dd JB |
62 | \f |
63 | ||
07f49ac7 LC |
64 | /* Character printers. */ |
65 | ||
478848cb LC |
66 | #define PORT_CONVERSION_HANDLER(port) \ |
67 | SCM_PTAB_ENTRY (port)->ilseq_handler | |
68 | ||
f4bc4e59 LC |
69 | static size_t display_string (const void *, int, size_t, SCM, |
70 | scm_t_string_failed_conversion_handler); | |
71 | ||
07f49ac7 LC |
72 | static int display_character (scm_t_wchar, SCM, |
73 | scm_t_string_failed_conversion_handler); | |
f4bc4e59 | 74 | |
07f49ac7 LC |
75 | static void write_character (scm_t_wchar, SCM, int); |
76 | ||
f4bc4e59 LC |
77 | static void write_character_escaped (scm_t_wchar, int, SCM); |
78 | ||
07f49ac7 LC |
79 | \f |
80 | ||
0f2d19dd JB |
81 | /* {Names of immediate symbols} |
82 | * | |
83 | * This table must agree with the declarations in scm.h: {Immediate Symbols}. | |
84 | */ | |
85 | ||
e17d318f DH |
86 | /* This table must agree with the list of flags in tags.h. */ |
87 | static const char *iflagnames[] = | |
88 | { | |
89 | "#f", | |
45f4cbdf MW |
90 | "#nil", /* Elisp nil value. Should print from elisp as symbol `nil'. */ |
91 | "#<XXX UNUSED LISP FALSE -- DO NOT USE -- SHOULD NEVER BE SEEN XXX>", | |
92 | "()", | |
e17d318f | 93 | "#t", |
f60c2c4e MW |
94 | "#<XXX UNUSED BOOLEAN 0 -- DO NOT USE -- SHOULD NEVER BE SEEN XXX>", |
95 | "#<XXX UNUSED BOOLEAN 1 -- DO NOT USE -- SHOULD NEVER BE SEEN XXX>", | |
96 | "#<XXX UNUSED BOOLEAN 2 -- DO NOT USE -- SHOULD NEVER BE SEEN XXX>", | |
45f4cbdf | 97 | "#<unspecified>", |
e17d318f DH |
98 | "#<undefined>", |
99 | "#<eof>", | |
e17d318f DH |
100 | |
101 | /* Unbound slot marker for GOOPS. For internal use in GOOPS only. */ | |
102 | "#<unbound>", | |
e17d318f DH |
103 | }; |
104 | ||
475fa9a5 MV |
105 | SCM_SYMBOL (sym_reader, "reader"); |
106 | ||
92c2555f | 107 | scm_t_option scm_print_opts[] = { |
210c0325 | 108 | { SCM_OPTION_SCM, "highlight-prefix", (scm_t_bits)SCM_BOOL_F_BITS, |
81ae25da | 109 | "The string to print before highlighted values." }, |
210c0325 | 110 | { SCM_OPTION_SCM, "highlight-suffix", (scm_t_bits)SCM_BOOL_F_BITS, |
475fa9a5 | 111 | "The string to print after highlighted values." }, |
210c0325 | 112 | { SCM_OPTION_SCM, "quote-keywordish-symbols", (scm_t_bits)SCM_BOOL_F_BITS, |
475fa9a5 MV |
113 | "How to print symbols that have a colon as their first or last character. " |
114 | "The value '#f' does not quote the colons; '#t' quotes them; " | |
8500b186 AW |
115 | "'reader' quotes them when the reader option 'keywords' is not '#f'." }, |
116 | { SCM_OPTION_BOOLEAN, "escape-newlines", 1, | |
117 | "Render newlines as \\n when printing using `write'." }, | |
62560650 | 118 | { 0 }, |
e6e4c9af MD |
119 | }; |
120 | ||
a1ec6916 | 121 | SCM_DEFINE (scm_print_options, "print-options-interface", 0, 1, 0, |
1bbd0b84 | 122 | (SCM setting), |
71331188 | 123 | "Option interface for the print options. Instead of using\n" |
1dd05fd8 MG |
124 | "this procedure directly, use the procedures\n" |
125 | "@code{print-enable}, @code{print-disable}, @code{print-set!}\n" | |
126 | "and @code{print-options}.") | |
1bbd0b84 | 127 | #define FUNC_NAME s_scm_print_options |
e6e4c9af | 128 | { |
a51ea417 | 129 | SCM ans = scm_options (setting, |
b7ff98dd | 130 | scm_print_opts, |
1bbd0b84 | 131 | FUNC_NAME); |
e6e4c9af MD |
132 | return ans; |
133 | } | |
1bbd0b84 | 134 | #undef FUNC_NAME |
e6e4c9af | 135 | |
0f2d19dd JB |
136 | \f |
137 | /* {Printing of Scheme Objects} | |
138 | */ | |
139 | ||
a51ea417 | 140 | /* Detection of circular references. |
c62fbfe1 MD |
141 | * |
142 | * Due to other constraints in the implementation, this code has bad | |
5d46ebe3 MD |
143 | * time complexity (O (depth * N)), The printer code can be |
144 | * rewritten to be O(N). | |
a51ea417 | 145 | */ |
dbb5de29 NJ |
146 | #define PUSH_REF(pstate, obj) \ |
147 | do \ | |
148 | { \ | |
149 | PSTATE_STACK_SET (pstate, pstate->top, obj); \ | |
150 | pstate->top++; \ | |
151 | if (pstate->top == pstate->ceiling) \ | |
152 | grow_ref_stack (pstate); \ | |
1bbd0b84 | 153 | } while(0) |
a51ea417 | 154 | |
dbb5de29 NJ |
155 | #define ENTER_NESTED_DATA(pstate, obj, label) \ |
156 | do \ | |
157 | { \ | |
158 | register unsigned long i; \ | |
159 | for (i = 0; i < pstate->top; ++i) \ | |
160 | if (scm_is_eq (PSTATE_STACK_REF (pstate, i), (obj))) \ | |
161 | goto label; \ | |
162 | if (pstate->fancyp) \ | |
163 | { \ | |
164 | if (pstate->top - pstate->list_offset >= pstate->level) \ | |
165 | { \ | |
166 | scm_putc ('#', port); \ | |
167 | return; \ | |
168 | } \ | |
169 | } \ | |
170 | PUSH_REF(pstate, obj); \ | |
1bbd0b84 | 171 | } while(0) |
a51ea417 | 172 | |
dbb5de29 NJ |
173 | #define EXIT_NESTED_DATA(pstate) \ |
174 | do \ | |
175 | { \ | |
176 | --pstate->top; \ | |
177 | PSTATE_STACK_SET (pstate, pstate->top, SCM_UNDEFINED); \ | |
178 | } \ | |
179 | while (0) | |
c62fbfe1 | 180 | |
d5cf5324 DH |
181 | SCM scm_print_state_vtable = SCM_BOOL_F; |
182 | static SCM print_state_pool = SCM_EOL; | |
9de87eea | 183 | scm_i_pthread_mutex_t print_state_mutex = SCM_I_PTHREAD_MUTEX_INITIALIZER; |
c4f37e80 | 184 | |
f843a84c | 185 | #ifdef GUILE_DEBUG /* Used for debugging purposes */ |
1cc91f1b | 186 | |
3b3b36dd | 187 | SCM_DEFINE (scm_current_pstate, "current-pstate", 0, 0, 0, |
1bbd0b84 | 188 | (), |
d5cf5324 | 189 | "Return the current-pstate -- the car of the\n" |
5352393c MG |
190 | "@code{print_state_pool}. @code{current-pstate} is only\n" |
191 | "included in @code{--enable-guile-debug} builds.") | |
1bbd0b84 | 192 | #define FUNC_NAME s_scm_current_pstate |
c62fbfe1 | 193 | { |
d2e53ed6 | 194 | if (!scm_is_null (print_state_pool)) |
d5cf5324 | 195 | return SCM_CAR (print_state_pool); |
a0adfbf0 | 196 | else |
0a284a4e | 197 | return SCM_BOOL_F; |
c62fbfe1 | 198 | } |
1bbd0b84 GB |
199 | #undef FUNC_NAME |
200 | ||
c62fbfe1 MD |
201 | #endif |
202 | ||
203 | #define PSTATE_SIZE 50L | |
204 | ||
698c0295 | 205 | static SCM |
1bbd0b84 | 206 | make_print_state (void) |
698c0295 | 207 | { |
d5cf5324 DH |
208 | SCM print_state |
209 | = scm_make_struct (scm_print_state_vtable, SCM_INUM0, SCM_EOL); | |
bf685b6d | 210 | scm_print_state *pstate = SCM_PRINT_STATE (print_state); |
00ffa0e7 | 211 | pstate->ref_vect = scm_c_make_vector (PSTATE_SIZE, SCM_UNDEFINED); |
4057a3e0 | 212 | pstate->ceiling = SCM_SIMPLE_VECTOR_LENGTH (pstate->ref_vect); |
d232520a | 213 | pstate->highlight_objects = SCM_EOL; |
698c0295 MD |
214 | return print_state; |
215 | } | |
1cc91f1b | 216 | |
c62fbfe1 MD |
217 | SCM |
218 | scm_make_print_state () | |
c62fbfe1 | 219 | { |
230d095f | 220 | SCM answer = SCM_BOOL_F; |
698c0295 MD |
221 | |
222 | /* First try to allocate a print state from the pool */ | |
9de87eea | 223 | scm_i_pthread_mutex_lock (&print_state_mutex); |
d2e53ed6 | 224 | if (!scm_is_null (print_state_pool)) |
698c0295 | 225 | { |
d5cf5324 DH |
226 | answer = SCM_CAR (print_state_pool); |
227 | print_state_pool = SCM_CDR (print_state_pool); | |
698c0295 | 228 | } |
9de87eea | 229 | scm_i_pthread_mutex_unlock (&print_state_mutex); |
698c0295 | 230 | |
7888309b | 231 | return scm_is_false (answer) ? make_print_state () : answer; |
c62fbfe1 | 232 | } |
a51ea417 | 233 | |
698c0295 | 234 | void |
6e8d25a6 | 235 | scm_free_print_state (SCM print_state) |
698c0295 MD |
236 | { |
237 | SCM handle; | |
238 | scm_print_state *pstate = SCM_PRINT_STATE (print_state); | |
239 | /* Cleanup before returning print state to pool. | |
240 | * It is better to do it here. Doing it in scm_prin1 | |
241 | * would cost more since that function is called much more | |
242 | * often. | |
243 | */ | |
244 | pstate->fancyp = 0; | |
bb35f315 | 245 | pstate->revealed = 0; |
d232520a | 246 | pstate->highlight_objects = SCM_EOL; |
9de87eea | 247 | scm_i_pthread_mutex_lock (&print_state_mutex); |
16d4699b | 248 | handle = scm_cons (print_state, print_state_pool); |
d5cf5324 | 249 | print_state_pool = handle; |
9de87eea | 250 | scm_i_pthread_mutex_unlock (&print_state_mutex); |
dfd03fb9 MD |
251 | } |
252 | ||
253 | SCM | |
254 | scm_i_port_with_print_state (SCM port, SCM print_state) | |
255 | { | |
256 | if (SCM_UNBNDP (print_state)) | |
257 | { | |
258 | if (SCM_PORT_WITH_PS_P (port)) | |
259 | return port; | |
260 | else | |
261 | print_state = scm_make_print_state (); | |
262 | /* port does not need to be coerced since it doesn't have ps */ | |
263 | } | |
264 | else | |
265 | port = SCM_COERCE_OUTPORT (port); | |
266 | SCM_RETURN_NEWSMOB (scm_tc16_port_with_ps, | |
267 | SCM_UNPACK (scm_cons (port, print_state))); | |
698c0295 | 268 | } |
1cc91f1b | 269 | |
a51ea417 | 270 | static void |
1bbd0b84 | 271 | grow_ref_stack (scm_print_state *pstate) |
a51ea417 | 272 | { |
4057a3e0 MV |
273 | SCM old_vect = pstate->ref_vect; |
274 | size_t old_size = SCM_SIMPLE_VECTOR_LENGTH (old_vect); | |
275 | size_t new_size = 2 * pstate->ceiling; | |
00ffa0e7 | 276 | SCM new_vect = scm_c_make_vector (new_size, SCM_UNDEFINED); |
b17004b8 DH |
277 | unsigned long int i; |
278 | ||
279 | for (i = 0; i != old_size; ++i) | |
4057a3e0 | 280 | SCM_SIMPLE_VECTOR_SET (new_vect, i, SCM_SIMPLE_VECTOR_REF (old_vect, i)); |
b17004b8 DH |
281 | |
282 | pstate->ref_vect = new_vect; | |
bf685b6d | 283 | pstate->ceiling = new_size; |
a51ea417 MD |
284 | } |
285 | ||
509759dd MV |
286 | #define PSTATE_STACK_REF(p,i) SCM_SIMPLE_VECTOR_REF((p)->ref_vect, (i)) |
287 | #define PSTATE_STACK_SET(p,i,v) SCM_SIMPLE_VECTOR_SET((p)->ref_vect, (i), (v)) | |
1cc91f1b | 288 | |
a51ea417 | 289 | static void |
34d19ef6 | 290 | print_circref (SCM port, scm_print_state *pstate, SCM ref) |
a51ea417 | 291 | { |
c014a02e ML |
292 | register long i; |
293 | long self = pstate->top - 1; | |
c62fbfe1 | 294 | i = pstate->top - 1; |
509759dd | 295 | if (scm_is_pair (PSTATE_STACK_REF (pstate, i))) |
c62fbfe1 MD |
296 | { |
297 | while (i > 0) | |
298 | { | |
509759dd MV |
299 | if (!scm_is_pair (PSTATE_STACK_REF (pstate, i-1)) |
300 | || !scm_is_eq (SCM_CDR (PSTATE_STACK_REF (pstate, i-1)), | |
301 | SCM_CDR (PSTATE_STACK_REF (pstate, i)))) | |
c62fbfe1 MD |
302 | break; |
303 | --i; | |
304 | } | |
305 | self = i; | |
306 | } | |
307 | for (i = pstate->top - 1; 1; --i) | |
509759dd | 308 | if (scm_is_eq (PSTATE_STACK_REF(pstate, i), ref)) |
c62fbfe1 | 309 | break; |
b7f3516f | 310 | scm_putc ('#', port); |
c62fbfe1 | 311 | scm_intprint (i - self, 10, port); |
b7f3516f | 312 | scm_putc ('#', port); |
a51ea417 MD |
313 | } |
314 | ||
6662998f MV |
315 | /* Print the name of a symbol. */ |
316 | ||
475fa9a5 | 317 | static int |
15671c6e | 318 | quote_keywordish_symbols (void) |
475fa9a5 | 319 | { |
15671c6e | 320 | SCM option = SCM_PRINT_KEYWORD_STYLE; |
475fa9a5 | 321 | |
475fa9a5 MV |
322 | if (scm_is_false (option)) |
323 | return 0; | |
324 | if (scm_is_eq (option, sym_reader)) | |
325 | return scm_is_true (SCM_PACK (SCM_KEYWORD_STYLE)); | |
326 | return 1; | |
327 | } | |
328 | ||
2e9fc9fc AW |
329 | #define INITIAL_IDENTIFIER_MASK \ |
330 | (UC_CATEGORY_MASK_Lu | UC_CATEGORY_MASK_Ll | UC_CATEGORY_MASK_Lt \ | |
331 | | UC_CATEGORY_MASK_Lm | UC_CATEGORY_MASK_Lo | UC_CATEGORY_MASK_Mn \ | |
332 | | UC_CATEGORY_MASK_Nl | UC_CATEGORY_MASK_No | UC_CATEGORY_MASK_Pd \ | |
333 | | UC_CATEGORY_MASK_Pc | UC_CATEGORY_MASK_Po | UC_CATEGORY_MASK_Sc \ | |
334 | | UC_CATEGORY_MASK_Sm | UC_CATEGORY_MASK_Sk | UC_CATEGORY_MASK_So \ | |
335 | | UC_CATEGORY_MASK_Co) | |
336 | ||
337 | #define SUBSEQUENT_IDENTIFIER_MASK \ | |
338 | (INITIAL_IDENTIFIER_MASK \ | |
339 | | UC_CATEGORY_MASK_Nd | UC_CATEGORY_MASK_Mc | UC_CATEGORY_MASK_Me) | |
340 | ||
15671c6e AW |
341 | static int |
342 | symbol_has_extended_read_syntax (SCM sym) | |
6662998f | 343 | { |
15671c6e AW |
344 | size_t pos, len = scm_i_symbol_length (sym); |
345 | scm_t_wchar c; | |
346 | ||
347 | /* The empty symbol. */ | |
348 | if (len == 0) | |
349 | return 1; | |
350 | ||
351 | c = scm_i_symbol_ref (sym, 0); | |
352 | ||
353 | /* Single dot; conflicts with dotted-pair notation. */ | |
354 | if (len == 1 && c == '.') | |
355 | return 1; | |
356 | ||
357 | /* Other initial-character constraints. */ | |
2e9fc9fc | 358 | if (c == '\'' || c == '`' || c == ',' || c == '"' || c == ';' || c == '#') |
15671c6e AW |
359 | return 1; |
360 | ||
361 | /* Keywords can be identified by trailing colons too. */ | |
362 | if (c == ':' || scm_i_symbol_ref (sym, len - 1) == ':') | |
363 | return quote_keywordish_symbols (); | |
364 | ||
365 | /* Number-ish symbols. */ | |
366 | if (scm_is_true (scm_i_string_to_number (scm_symbol_to_string (sym), 10))) | |
367 | return 1; | |
368 | ||
2e9fc9fc AW |
369 | /* Other disallowed first characters. */ |
370 | if (!uc_is_general_category_withtable (c, INITIAL_IDENTIFIER_MASK)) | |
371 | return 1; | |
372 | ||
373 | /* Otherwise, any character that's in the identifier category mask is | |
374 | fine to pass through as-is, provided it's not one of the ASCII | |
375 | delimiters like `;'. */ | |
376 | for (pos = 1; pos < len; pos++) | |
6662998f | 377 | { |
2e9fc9fc AW |
378 | c = scm_i_symbol_ref (sym, pos); |
379 | if (!uc_is_general_category_withtable (c, SUBSEQUENT_IDENTIFIER_MASK)) | |
380 | return 1; | |
381 | else if (c == '"' || c == ';' || c == '#') | |
382 | return 1; | |
6662998f | 383 | } |
c6b49e89 | 384 | |
15671c6e AW |
385 | return 0; |
386 | } | |
387 | ||
388 | static void | |
389 | print_normal_symbol (SCM sym, SCM port) | |
390 | { | |
391 | scm_display (scm_symbol_to_string (sym), port); | |
392 | } | |
393 | ||
15671c6e AW |
394 | static void |
395 | print_extended_symbol (SCM sym, SCM port) | |
396 | { | |
397 | size_t pos, len; | |
398 | scm_t_string_failed_conversion_handler strategy; | |
399 | ||
400 | len = scm_i_symbol_length (sym); | |
478848cb | 401 | strategy = PORT_CONVERSION_HANDLER (port); |
15671c6e AW |
402 | |
403 | scm_lfwrite ("#{", 2, port); | |
404 | ||
405 | for (pos = 0; pos < len; pos++) | |
406 | { | |
407 | scm_t_wchar c = scm_i_symbol_ref (sym, pos); | |
408 | ||
2e9fc9fc AW |
409 | if (uc_is_general_category_withtable (c, |
410 | SUBSEQUENT_IDENTIFIER_MASK | |
411 | | UC_CATEGORY_MASK_Zs)) | |
15671c6e | 412 | { |
b4a09988 DK |
413 | if (!display_character (c, port, strategy) |
414 | || (c == '\\' && !display_character (c, port, strategy))) | |
15671c6e AW |
415 | scm_encoding_error ("print_extended_symbol", errno, |
416 | "cannot convert to output locale", | |
417 | port, SCM_MAKE_CHAR (c)); | |
2e9fc9fc AW |
418 | } |
419 | else | |
420 | { | |
421 | display_string ("\\x", 1, 2, port, iconveh_question_mark); | |
422 | scm_intprint (c, 16, port); | |
423 | display_character (';', port, iconveh_question_mark); | |
15671c6e AW |
424 | } |
425 | } | |
426 | ||
427 | scm_lfwrite ("}#", 2, port); | |
428 | } | |
429 | ||
430 | /* FIXME: allow R6RS hex escapes instead of #{...}#. */ | |
431 | void | |
432 | scm_i_print_symbol_name (SCM sym, SCM port) | |
433 | { | |
434 | if (symbol_has_extended_read_syntax (sym)) | |
435 | print_extended_symbol (sym, port); | |
436 | else | |
437 | print_normal_symbol (sym, port); | |
6662998f MV |
438 | } |
439 | ||
e23106d5 MG |
440 | void |
441 | scm_print_symbol_name (const char *str, size_t len, SCM port) | |
442 | { | |
443 | SCM symbol = scm_from_locale_symboln (str, len); | |
ab33782c | 444 | scm_i_print_symbol_name (symbol, port); |
e23106d5 MG |
445 | } |
446 | ||
c62fbfe1 | 447 | /* Print generally. Handles both write and display according to PSTATE. |
0f2d19dd | 448 | */ |
8b840115 MD |
449 | SCM_GPROC(s_write, "write", 1, 1, 0, scm_write, g_write); |
450 | SCM_GPROC(s_display, "display", 1, 1, 0, scm_display, g_display); | |
1cc91f1b | 451 | |
d232520a MV |
452 | static void iprin1 (SCM exp, SCM port, scm_print_state *pstate); |
453 | ||
dea901d6 MG |
454 | |
455 | /* Print a character as an octal or hex escape. */ | |
456 | #define PRINT_CHAR_ESCAPE(i, port) \ | |
457 | do \ | |
458 | { \ | |
459 | if (!SCM_R6RS_ESCAPES_P) \ | |
460 | scm_intprint (i, 8, port); \ | |
461 | else \ | |
462 | { \ | |
463 | scm_puts ("x", port); \ | |
464 | scm_intprint (i, 16, port); \ | |
465 | } \ | |
466 | } \ | |
467 | while (0) | |
468 | ||
469 | ||
0f2d19dd | 470 | void |
1bbd0b84 | 471 | scm_iprin1 (SCM exp, SCM port, scm_print_state *pstate) |
d232520a MV |
472 | { |
473 | if (pstate->fancyp | |
474 | && scm_is_true (scm_memq (exp, pstate->highlight_objects))) | |
475 | { | |
81ae25da | 476 | scm_display (SCM_PRINT_HIGHLIGHT_PREFIX, port); |
d232520a | 477 | iprin1 (exp, port, pstate); |
81ae25da | 478 | scm_display (SCM_PRINT_HIGHLIGHT_SUFFIX, port); |
d232520a MV |
479 | } |
480 | else | |
481 | iprin1 (exp, port, pstate); | |
482 | } | |
483 | ||
484 | static void | |
485 | iprin1 (SCM exp, SCM port, scm_print_state *pstate) | |
0f2d19dd | 486 | { |
54778cd3 | 487 | switch (SCM_ITAG3 (exp)) |
0f2d19dd | 488 | { |
e34f941a DH |
489 | case scm_tc3_tc7_1: |
490 | case scm_tc3_tc7_2: | |
491 | /* These tc3 tags should never occur in an immediate value. They are | |
492 | * only used in cell types of non-immediates, i. e. the value returned | |
493 | * by SCM_CELL_TYPE (exp) can use these tags. | |
494 | */ | |
495 | scm_ipruk ("immediate", exp, port); | |
496 | break; | |
497 | case scm_tc3_int_1: | |
498 | case scm_tc3_int_2: | |
e11e83f3 | 499 | scm_intprint (SCM_I_INUM (exp), 10, port); |
0f2d19dd | 500 | break; |
e34f941a | 501 | case scm_tc3_imm24: |
7866a09b | 502 | if (SCM_CHARP (exp)) |
0f2d19dd | 503 | { |
b7f3516f | 504 | if (SCM_WRITINGP (pstate)) |
07f49ac7 LC |
505 | write_character (SCM_CHAR (exp), port, 0); |
506 | else | |
b7f3516f | 507 | { |
07f49ac7 | 508 | if (!display_character (SCM_CHAR (exp), port, |
478848cb | 509 | PORT_CONVERSION_HANDLER (port))) |
07f49ac7 LC |
510 | scm_encoding_error (__func__, errno, |
511 | "cannot convert to output locale", | |
6851d3be | 512 | port, exp); |
b7f3516f | 513 | } |
0f2d19dd | 514 | } |
a51ea417 | 515 | else if (SCM_IFLAGP (exp) |
e17d318f DH |
516 | && ((size_t) SCM_IFLAGNUM (exp) < (sizeof iflagnames / sizeof (char *)))) |
517 | { | |
518 | scm_puts (iflagnames [SCM_IFLAGNUM (exp)], port); | |
519 | } | |
0f2d19dd | 520 | else |
e34f941a DH |
521 | { |
522 | /* unknown immediate value */ | |
523 | scm_ipruk ("immediate", exp, port); | |
524 | } | |
0f2d19dd | 525 | break; |
e34f941a | 526 | case scm_tc3_cons: |
0f2d19dd JB |
527 | switch (SCM_TYP7 (exp)) |
528 | { | |
904a077d MV |
529 | case scm_tcs_struct: |
530 | { | |
531 | ENTER_NESTED_DATA (pstate, exp, circref); | |
532 | if (SCM_OBJ_CLASS_FLAGS (exp) & SCM_CLASSF_GOOPS) | |
533 | { | |
534 | SCM pwps, print = pstate->writingp ? g_write : g_display; | |
b2b33168 | 535 | if (SCM_UNPACK (print) == 0) |
904a077d | 536 | goto print_struct; |
dfd03fb9 | 537 | pwps = scm_i_port_with_print_state (port, pstate->handle); |
7663c008 | 538 | pstate->revealed = 1; |
904a077d MV |
539 | scm_call_generic_2 (print, exp, pwps); |
540 | } | |
541 | else | |
542 | { | |
543 | print_struct: | |
544 | scm_print_struct (exp, port, pstate); | |
545 | } | |
546 | EXIT_NESTED_DATA (pstate); | |
547 | } | |
548 | break; | |
0f2d19dd JB |
549 | case scm_tcs_cons_imcar: |
550 | case scm_tcs_cons_nimcar: | |
c62fbfe1 MD |
551 | ENTER_NESTED_DATA (pstate, exp, circref); |
552 | scm_iprlist ("(", exp, ')', port, pstate); | |
553 | EXIT_NESTED_DATA (pstate); | |
a51ea417 MD |
554 | break; |
555 | circref: | |
c62fbfe1 | 556 | print_circref (port, pstate, exp); |
0f2d19dd | 557 | break; |
534c55a9 DH |
558 | case scm_tc7_number: |
559 | switch SCM_TYP16 (exp) { | |
560 | case scm_tc16_big: | |
561 | scm_bigprint (exp, port, pstate); | |
562 | break; | |
563 | case scm_tc16_real: | |
564 | scm_print_real (exp, port, pstate); | |
565 | break; | |
566 | case scm_tc16_complex: | |
567 | scm_print_complex (exp, port, pstate); | |
568 | break; | |
f92e85f7 MV |
569 | case scm_tc16_fraction: |
570 | scm_i_print_fraction (exp, port, pstate); | |
571 | break; | |
534c55a9 DH |
572 | } |
573 | break; | |
9c44cd45 MG |
574 | case scm_tc7_string: |
575 | if (SCM_WRITINGP (pstate)) | |
576 | { | |
07f49ac7 | 577 | size_t len, i; |
9c44cd45 | 578 | |
f4bc4e59 | 579 | display_character ('"', port, iconveh_question_mark); |
9c44cd45 MG |
580 | len = scm_i_string_length (exp); |
581 | for (i = 0; i < len; ++i) | |
07f49ac7 LC |
582 | write_character (scm_i_string_ref (exp, i), port, 1); |
583 | ||
f4bc4e59 | 584 | display_character ('"', port, iconveh_question_mark); |
9c44cd45 MG |
585 | scm_remember_upto_here_1 (exp); |
586 | } | |
587 | else | |
f4bc4e59 LC |
588 | { |
589 | size_t len, printed; | |
590 | ||
591 | len = scm_i_string_length (exp); | |
592 | printed = display_string (scm_i_string_data (exp), | |
593 | scm_i_is_narrow_string (exp), | |
594 | len, port, | |
478848cb | 595 | PORT_CONVERSION_HANDLER (port)); |
f4bc4e59 | 596 | if (SCM_UNLIKELY (printed < len)) |
f4bc4e59 LC |
597 | scm_encoding_error (__func__, errno, |
598 | "cannot convert to output locale", | |
6851d3be | 599 | port, scm_c_string_ref (exp, printed)); |
f4bc4e59 LC |
600 | } |
601 | ||
9c44cd45 MG |
602 | scm_remember_upto_here_1 (exp); |
603 | break; | |
28b06554 | 604 | case scm_tc7_symbol: |
cc95e00a | 605 | if (scm_i_symbol_is_interned (exp)) |
9ff28a13 | 606 | { |
e23106d5 | 607 | scm_i_print_symbol_name (exp, port); |
9ff28a13 MV |
608 | scm_remember_upto_here_1 (exp); |
609 | } | |
610 | else | |
611 | { | |
612 | scm_puts ("#<uninterned-symbol ", port); | |
e23106d5 | 613 | scm_i_print_symbol_name (exp, port); |
9ff28a13 | 614 | scm_putc (' ', port); |
0345e278 | 615 | scm_uintprint (SCM_UNPACK (exp), 16, port); |
9ff28a13 MV |
616 | scm_putc ('>', port); |
617 | } | |
6662998f | 618 | break; |
e5aca4b5 MV |
619 | case scm_tc7_variable: |
620 | scm_i_variable_print (exp, port, pstate); | |
621 | break; | |
2fb924f6 AW |
622 | case scm_tc7_program: |
623 | scm_i_program_print (exp, port, pstate); | |
624 | break; | |
5b46a8c2 LC |
625 | case scm_tc7_pointer: |
626 | scm_i_pointer_print (exp, port, pstate); | |
e2c2a699 | 627 | break; |
c99de5aa AW |
628 | case scm_tc7_hashtable: |
629 | scm_i_hashtable_print (exp, port, pstate); | |
630 | break; | |
9ea31741 AW |
631 | case scm_tc7_fluid: |
632 | scm_i_fluid_print (exp, port, pstate); | |
633 | break; | |
45cf2428 AW |
634 | case scm_tc7_dynamic_state: |
635 | scm_i_dynamic_state_print (exp, port, pstate); | |
636 | break; | |
6f3b0cc2 AW |
637 | case scm_tc7_frame: |
638 | scm_i_frame_print (exp, port, pstate); | |
639 | break; | |
640 | case scm_tc7_objcode: | |
641 | scm_i_objcode_print (exp, port, pstate); | |
642 | break; | |
643 | case scm_tc7_vm: | |
644 | scm_i_vm_print (exp, port, pstate); | |
645 | break; | |
646 | case scm_tc7_vm_cont: | |
647 | scm_i_vm_cont_print (exp, port, pstate); | |
648 | break; | |
bbb2ecd1 AW |
649 | case scm_tc7_prompt: |
650 | scm_i_prompt_print (exp, port, pstate); | |
651 | break; | |
652 | case scm_tc7_with_fluids: | |
653 | scm_i_with_fluids_print (exp, port, pstate); | |
654 | break; | |
b2637c98 AW |
655 | case scm_tc7_array: |
656 | ENTER_NESTED_DATA (pstate, exp, circref); | |
657 | scm_i_print_array (exp, port, pstate); | |
88c0a1d5 | 658 | EXIT_NESTED_DATA (pstate); |
b2637c98 AW |
659 | break; |
660 | case scm_tc7_bytevector: | |
661 | scm_i_print_bytevector (exp, port, pstate); | |
662 | break; | |
ff1feca9 AW |
663 | case scm_tc7_bitvector: |
664 | scm_i_print_bitvector (exp, port, pstate); | |
665 | break; | |
0f2d19dd | 666 | case scm_tc7_wvect: |
c62fbfe1 | 667 | ENTER_NESTED_DATA (pstate, exp, circref); |
0f2d19dd | 668 | if (SCM_IS_WHVEC (exp)) |
b7f3516f | 669 | scm_puts ("#wh(", port); |
0f2d19dd | 670 | else |
b7f3516f | 671 | scm_puts ("#w(", port); |
0f2d19dd | 672 | goto common_vector_printer; |
0f2d19dd | 673 | case scm_tc7_vector: |
c62fbfe1 | 674 | ENTER_NESTED_DATA (pstate, exp, circref); |
b7f3516f | 675 | scm_puts ("#(", port); |
0f2d19dd | 676 | common_vector_printer: |
9fbaf27c | 677 | { |
c014a02e | 678 | register long i; |
4057a3e0 | 679 | long last = SCM_SIMPLE_VECTOR_LENGTH (exp) - 1; |
9fbaf27c | 680 | int cutp = 0; |
4057a3e0 MV |
681 | if (pstate->fancyp |
682 | && SCM_SIMPLE_VECTOR_LENGTH (exp) > pstate->length) | |
9fbaf27c MD |
683 | { |
684 | last = pstate->length - 1; | |
685 | cutp = 1; | |
686 | } | |
c367c4b4 | 687 | if (SCM_I_WVECTP (exp)) |
9fbaf27c | 688 | { |
c367c4b4 LC |
689 | /* Elements of weak vectors may not be accessed via the |
690 | `SIMPLE_VECTOR_REF ()' macro. */ | |
691 | for (i = 0; i < last; ++i) | |
692 | { | |
693 | scm_iprin1 (scm_c_vector_ref (exp, i), | |
694 | port, pstate); | |
695 | scm_putc (' ', port); | |
696 | } | |
9fbaf27c | 697 | } |
c367c4b4 LC |
698 | else |
699 | { | |
700 | for (i = 0; i < last; ++i) | |
701 | { | |
702 | scm_iprin1 (SCM_SIMPLE_VECTOR_REF (exp, i), port, pstate); | |
703 | scm_putc (' ', port); | |
704 | } | |
705 | } | |
706 | ||
9fbaf27c MD |
707 | if (i == last) |
708 | { | |
709 | /* CHECK_INTS; */ | |
c367c4b4 | 710 | scm_iprin1 (scm_c_vector_ref (exp, i), port, pstate); |
9fbaf27c MD |
711 | } |
712 | if (cutp) | |
b7f3516f TT |
713 | scm_puts (" ...", port); |
714 | scm_putc (')', port); | |
9fbaf27c | 715 | } |
c62fbfe1 | 716 | EXIT_NESTED_DATA (pstate); |
0f2d19dd | 717 | break; |
0f2d19dd | 718 | case scm_tc7_port: |
5ca6dc39 JB |
719 | { |
720 | register long i = SCM_PTOBNUM (exp); | |
721 | if (i < scm_numptob | |
722 | && scm_ptobs[i].print | |
723 | && (scm_ptobs[i].print) (exp, port, pstate)) | |
a51ea417 | 724 | break; |
5ca6dc39 JB |
725 | goto punk; |
726 | } | |
727 | case scm_tc7_smob: | |
7a7f7c53 DH |
728 | ENTER_NESTED_DATA (pstate, exp, circref); |
729 | SCM_SMOB_DESCRIPTOR (exp).print (exp, port, pstate); | |
730 | EXIT_NESTED_DATA (pstate); | |
731 | break; | |
0f2d19dd | 732 | default: |
314b8716 | 733 | /* case scm_tcs_closures: */ |
a51ea417 MD |
734 | punk: |
735 | scm_ipruk ("type", exp, port); | |
0f2d19dd JB |
736 | } |
737 | } | |
738 | } | |
739 | ||
c62fbfe1 MD |
740 | /* Print states are necessary for circular reference safe printing. |
741 | * They are also expensive to allocate. Therefore print states are | |
742 | * kept in a pool so that they can be reused. | |
743 | */ | |
1cc91f1b | 744 | |
bb35f315 MV |
745 | /* The PORT argument can also be a print-state/port pair, which will |
746 | * then be used instead of allocating a new print state. This is | |
747 | * useful for continuing a chain of print calls from Scheme. */ | |
748 | ||
a51ea417 | 749 | void |
1bbd0b84 | 750 | scm_prin1 (SCM exp, SCM port, int writingp) |
a51ea417 | 751 | { |
c4f37e80 MV |
752 | SCM handle = SCM_BOOL_F; /* Will GC protect the handle whilst unlinked */ |
753 | SCM pstate_scm; | |
c62fbfe1 | 754 | scm_print_state *pstate; |
15635be5 | 755 | int old_writingp; |
c62fbfe1 | 756 | |
bb35f315 MV |
757 | /* If PORT is a print-state/port pair, use that. Else create a new |
758 | print-state. */ | |
c4f37e80 | 759 | |
0c95b57d | 760 | if (SCM_PORT_WITH_PS_P (port)) |
bb35f315 | 761 | { |
52235e71 MD |
762 | pstate_scm = SCM_PORT_WITH_PS_PS (port); |
763 | port = SCM_PORT_WITH_PS_PORT (port); | |
bb35f315 MV |
764 | } |
765 | else | |
c62fbfe1 | 766 | { |
c4f37e80 | 767 | /* First try to allocate a print state from the pool */ |
9de87eea | 768 | scm_i_pthread_mutex_lock (&print_state_mutex); |
d2e53ed6 | 769 | if (!scm_is_null (print_state_pool)) |
c4f37e80 | 770 | { |
d5cf5324 DH |
771 | handle = print_state_pool; |
772 | print_state_pool = SCM_CDR (print_state_pool); | |
c4f37e80 | 773 | } |
9de87eea | 774 | scm_i_pthread_mutex_unlock (&print_state_mutex); |
7888309b | 775 | if (scm_is_false (handle)) |
d5cf5324 | 776 | handle = scm_list_1 (make_print_state ()); |
c4f37e80 | 777 | pstate_scm = SCM_CAR (handle); |
c62fbfe1 | 778 | } |
c62fbfe1 | 779 | |
c4f37e80 | 780 | pstate = SCM_PRINT_STATE (pstate_scm); |
15635be5 | 781 | old_writingp = pstate->writingp; |
c62fbfe1 MD |
782 | pstate->writingp = writingp; |
783 | scm_iprin1 (exp, port, pstate); | |
15635be5 | 784 | pstate->writingp = old_writingp; |
c62fbfe1 | 785 | |
bb35f315 MV |
786 | /* Return print state to pool if it has been created above and |
787 | hasn't escaped to Scheme. */ | |
788 | ||
7888309b | 789 | if (scm_is_true (handle) && !pstate->revealed) |
c4f37e80 | 790 | { |
9de87eea | 791 | scm_i_pthread_mutex_lock (&print_state_mutex); |
d5cf5324 DH |
792 | SCM_SETCDR (handle, print_state_pool); |
793 | print_state_pool = handle; | |
9de87eea | 794 | scm_i_pthread_mutex_unlock (&print_state_mutex); |
c4f37e80 | 795 | } |
a51ea417 MD |
796 | } |
797 | ||
f4bc4e59 LC |
798 | /* Convert codepoint CH to UTF-8 and store the result in UTF8. Return |
799 | the number of bytes of the UTF-8-encoded string. */ | |
800 | static size_t | |
801 | codepoint_to_utf8 (scm_t_wchar ch, scm_t_uint8 utf8[4]) | |
9c44cd45 | 802 | { |
f4bc4e59 LC |
803 | size_t len; |
804 | scm_t_uint32 codepoint; | |
805 | ||
806 | codepoint = (scm_t_uint32) ch; | |
07f49ac7 | 807 | |
f4bc4e59 | 808 | if (codepoint <= 0x7f) |
07f49ac7 | 809 | { |
f4bc4e59 LC |
810 | len = 1; |
811 | utf8[0] = (scm_t_uint8) codepoint; | |
812 | } | |
813 | else if (codepoint <= 0x7ffUL) | |
814 | { | |
815 | len = 2; | |
816 | utf8[0] = 0xc0 | (codepoint >> 6); | |
817 | utf8[1] = 0x80 | (codepoint & 0x3f); | |
818 | } | |
819 | else if (codepoint <= 0xffffUL) | |
820 | { | |
821 | len = 3; | |
822 | utf8[0] = 0xe0 | (codepoint >> 12); | |
823 | utf8[1] = 0x80 | ((codepoint >> 6) & 0x3f); | |
824 | utf8[2] = 0x80 | (codepoint & 0x3f); | |
07f49ac7 LC |
825 | } |
826 | else | |
827 | { | |
f4bc4e59 LC |
828 | len = 4; |
829 | utf8[0] = 0xf0 | (codepoint >> 18); | |
830 | utf8[1] = 0x80 | ((codepoint >> 12) & 0x3f); | |
831 | utf8[2] = 0x80 | ((codepoint >> 6) & 0x3f); | |
832 | utf8[3] = 0x80 | (codepoint & 0x3f); | |
833 | } | |
834 | ||
835 | return len; | |
836 | } | |
837 | ||
f4bc4e59 LC |
838 | #define STR_REF(s, x) \ |
839 | (narrow_p \ | |
840 | ? (scm_t_wchar) ((unsigned char *) (s))[x] \ | |
841 | : ((scm_t_wchar *) (s))[x]) | |
842 | ||
7b292a9d LC |
843 | /* Write STR to PORT as UTF-8. STR is a LEN-codepoint string; it is |
844 | narrow if NARROW_P is true, wide otherwise. Return LEN. */ | |
845 | static size_t | |
846 | display_string_as_utf8 (const void *str, int narrow_p, size_t len, | |
847 | SCM port) | |
848 | { | |
849 | size_t printed = 0; | |
850 | ||
851 | while (len > printed) | |
852 | { | |
853 | size_t utf8_len, i; | |
854 | char *input, utf8_buf[256]; | |
855 | ||
856 | /* Convert STR to UTF-8. */ | |
857 | for (i = printed, utf8_len = 0, input = utf8_buf; | |
858 | i < len && utf8_len + 4 < sizeof (utf8_buf); | |
859 | i++) | |
860 | { | |
861 | utf8_len += codepoint_to_utf8 (STR_REF (str, i), | |
862 | (scm_t_uint8 *) input); | |
863 | input = utf8_buf + utf8_len; | |
864 | } | |
865 | ||
866 | /* INPUT was successfully converted, entirely; print the | |
867 | result. */ | |
868 | scm_lfwrite (utf8_buf, utf8_len, port); | |
869 | printed += i - printed; | |
870 | } | |
871 | ||
872 | assert (printed == len); | |
873 | ||
874 | return len; | |
875 | } | |
876 | ||
877 | /* Convert STR through PORT's output conversion descriptor and write the | |
878 | output to PORT. Return the number of codepoints written. */ | |
879 | static size_t | |
880 | display_string_using_iconv (const void *str, int narrow_p, size_t len, | |
881 | SCM port, | |
882 | scm_t_string_failed_conversion_handler strategy) | |
883 | { | |
f4bc4e59 | 884 | size_t printed; |
337edc59 | 885 | scm_t_iconv_descriptors *id; |
cdd3d6c9 | 886 | scm_t_port_internal *pti = SCM_PORT_GET_INTERNAL (port); |
f4bc4e59 | 887 | |
cdd3d6c9 MW |
888 | id = scm_i_port_iconv_descriptors (port, SCM_PORT_WRITE); |
889 | ||
890 | if (SCM_UNLIKELY (pti->at_stream_start_for_bom_write && len > 0)) | |
891 | { | |
892 | scm_t_port *pt = SCM_PTAB_ENTRY (port); | |
893 | ||
894 | /* Record that we're no longer at stream start. */ | |
895 | pti->at_stream_start_for_bom_write = 0; | |
896 | if (pt->rw_random) | |
897 | pti->at_stream_start_for_bom_read = 0; | |
898 | ||
899 | /* Write a BOM if appropriate. */ | |
96965a6e MW |
900 | if (SCM_UNLIKELY (c_strcasecmp(pt->encoding, "UTF-16") == 0 |
901 | || c_strcasecmp(pt->encoding, "UTF-32") == 0)) | |
cdd3d6c9 MW |
902 | display_character (SCM_UNICODE_BOM, port, iconveh_error); |
903 | } | |
f4bc4e59 | 904 | |
f4bc4e59 LC |
905 | printed = 0; |
906 | ||
907 | while (len > printed) | |
908 | { | |
909 | size_t done, utf8_len, input_left, output_left, i; | |
910 | size_t codepoints_read, output_len; | |
911 | char *input, *output; | |
912 | char utf8_buf[256], encoded_output[256]; | |
913 | size_t offsets[256]; | |
914 | ||
915 | /* Convert STR to UTF-8. */ | |
916 | for (i = printed, utf8_len = 0, input = utf8_buf; | |
917 | i < len && utf8_len + 4 < sizeof (utf8_buf); | |
918 | i++) | |
07f49ac7 | 919 | { |
f4bc4e59 LC |
920 | offsets[utf8_len] = i; |
921 | utf8_len += codepoint_to_utf8 (STR_REF (str, i), | |
922 | (scm_t_uint8 *) input); | |
923 | input = utf8_buf + utf8_len; | |
924 | } | |
925 | ||
926 | input = utf8_buf; | |
927 | input_left = utf8_len; | |
928 | ||
929 | output = encoded_output; | |
930 | output_left = sizeof (encoded_output); | |
931 | ||
337edc59 | 932 | done = iconv (id->output_cd, &input, &input_left, |
f4bc4e59 | 933 | &output, &output_left); |
07f49ac7 | 934 | |
f4bc4e59 LC |
935 | output_len = sizeof (encoded_output) - output_left; |
936 | ||
937 | if (SCM_UNLIKELY (done == (size_t) -1)) | |
938 | { | |
b2548e23 AW |
939 | int errno_save = errno; |
940 | ||
f4bc4e59 | 941 | /* Reset the `iconv' state. */ |
337edc59 | 942 | iconv (id->output_cd, NULL, NULL, NULL, NULL); |
f4bc4e59 | 943 | |
7174bc08 LC |
944 | /* Print the OUTPUT_LEN bytes successfully converted. */ |
945 | scm_lfwrite (encoded_output, output_len, port); | |
946 | ||
947 | /* See how many input codepoints these OUTPUT_LEN bytes | |
948 | corresponds to. */ | |
949 | codepoints_read = offsets[input - utf8_buf] - printed; | |
950 | printed += codepoints_read; | |
951 | ||
b2548e23 | 952 | if (errno_save == EILSEQ && |
f4bc4e59 | 953 | strategy != SCM_FAILED_CONVERSION_ERROR) |
07f49ac7 | 954 | { |
f4bc4e59 LC |
955 | /* Conversion failed somewhere in INPUT and we want to |
956 | escape or substitute the offending input character. */ | |
957 | ||
f4bc4e59 | 958 | if (strategy == SCM_FAILED_CONVERSION_ESCAPE_SEQUENCE) |
f1ee6d54 | 959 | { |
f4bc4e59 LC |
960 | scm_t_wchar ch; |
961 | ||
962 | /* Find CH, the offending codepoint, and escape it. */ | |
963 | ch = STR_REF (str, offsets[input - utf8_buf]); | |
964 | write_character_escaped (ch, 1, port); | |
f1ee6d54 | 965 | } |
07f49ac7 | 966 | else |
f4bc4e59 LC |
967 | /* STRATEGY is `SCM_FAILED_CONVERSION_QUESTION_MARK'. */ |
968 | display_string ("?", 1, 1, port, strategy); | |
9c44cd45 | 969 | |
f4bc4e59 LC |
970 | printed++; |
971 | } | |
972 | else | |
973 | /* Something bad happened that we can't handle: bail out. */ | |
974 | break; | |
07f49ac7 LC |
975 | } |
976 | else | |
f4bc4e59 LC |
977 | { |
978 | /* INPUT was successfully converted, entirely; print the | |
979 | result. */ | |
980 | scm_lfwrite (encoded_output, output_len, port); | |
981 | codepoints_read = i - printed; | |
982 | printed += codepoints_read; | |
983 | } | |
07f49ac7 LC |
984 | } |
985 | ||
986 | return printed; | |
7b292a9d LC |
987 | } |
988 | ||
f4bc4e59 | 989 | #undef STR_REF |
7b292a9d LC |
990 | |
991 | /* Display the LEN codepoints in STR to PORT according to STRATEGY; | |
992 | return the number of codepoints successfully displayed. If NARROW_P, | |
993 | then STR is interpreted as a sequence of `char', denoting a Latin-1 | |
994 | string; otherwise it's interpreted as a sequence of | |
995 | `scm_t_wchar'. */ | |
996 | static size_t | |
997 | display_string (const void *str, int narrow_p, | |
998 | size_t len, SCM port, | |
999 | scm_t_string_failed_conversion_handler strategy) | |
1000 | ||
1001 | { | |
e4598559 | 1002 | scm_t_port_internal *pti; |
7b292a9d | 1003 | |
e4598559 | 1004 | pti = SCM_PORT_GET_INTERNAL (port); |
7b292a9d | 1005 | |
337edc59 | 1006 | if (pti->encoding_mode == SCM_PORT_ENCODING_MODE_UTF8) |
7b292a9d LC |
1007 | return display_string_as_utf8 (str, narrow_p, len, port); |
1008 | else | |
1009 | return display_string_using_iconv (str, narrow_p, len, | |
1010 | port, strategy); | |
f4bc4e59 LC |
1011 | } |
1012 | ||
1013 | /* Attempt to display CH to PORT according to STRATEGY. Return non-zero | |
1014 | if CH was successfully displayed, zero otherwise (e.g., if it was not | |
1015 | representable in PORT's encoding.) */ | |
1016 | static int | |
1017 | display_character (scm_t_wchar ch, SCM port, | |
1018 | scm_t_string_failed_conversion_handler strategy) | |
1019 | { | |
1020 | return display_string (&ch, 0, 1, port, strategy) == 1; | |
07f49ac7 LC |
1021 | } |
1022 | ||
33d92fe6 LC |
1023 | /* Attempt to pretty-print CH, a combining character, to PORT. Return |
1024 | zero upon failure, non-zero otherwise. The idea is to print CH above | |
1025 | a dotted circle to make it more visible. */ | |
1026 | static int | |
1027 | write_combining_character (scm_t_wchar ch, SCM port) | |
1028 | { | |
f4bc4e59 LC |
1029 | scm_t_wchar str[2]; |
1030 | ||
1031 | str[0] = SCM_CODEPOINT_DOTTED_CIRCLE; | |
1032 | str[1] = ch; | |
1033 | ||
1034 | return display_string (str, 0, 2, port, iconveh_error) == 2; | |
1035 | } | |
33d92fe6 | 1036 | |
f4bc4e59 LC |
1037 | /* Write CH to PORT in its escaped form, using the string escape syntax |
1038 | if STRING_ESCAPES_P is non-zero. */ | |
1039 | static void | |
1040 | write_character_escaped (scm_t_wchar ch, int string_escapes_p, SCM port) | |
1041 | { | |
1042 | if (string_escapes_p) | |
33d92fe6 | 1043 | { |
f4bc4e59 LC |
1044 | /* Represent CH using the in-string escape syntax. */ |
1045 | ||
1046 | static const char hex[] = "0123456789abcdef"; | |
1047 | static const char escapes[7] = "abtnvfr"; | |
1048 | char buf[9]; | |
1049 | ||
1050 | if (ch >= 0x07 && ch <= 0x0D && ch != 0x0A) | |
33d92fe6 | 1051 | { |
f4bc4e59 LC |
1052 | /* Use special escapes for some C0 controls. */ |
1053 | buf[0] = '\\'; | |
1054 | buf[1] = escapes[ch - 0x07]; | |
1055 | scm_lfwrite (buf, 2, port); | |
1056 | } | |
1057 | else if (!SCM_R6RS_ESCAPES_P) | |
1058 | { | |
1059 | if (ch <= 0xFF) | |
1060 | { | |
1061 | buf[0] = '\\'; | |
1062 | buf[1] = 'x'; | |
1063 | buf[2] = hex[ch / 16]; | |
1064 | buf[3] = hex[ch % 16]; | |
1065 | scm_lfwrite (buf, 4, port); | |
1066 | } | |
1067 | else if (ch <= 0xFFFF) | |
1068 | { | |
1069 | buf[0] = '\\'; | |
1070 | buf[1] = 'u'; | |
1071 | buf[2] = hex[(ch & 0xF000) >> 12]; | |
1072 | buf[3] = hex[(ch & 0xF00) >> 8]; | |
1073 | buf[4] = hex[(ch & 0xF0) >> 4]; | |
1074 | buf[5] = hex[(ch & 0xF)]; | |
1075 | scm_lfwrite (buf, 6, port); | |
1076 | } | |
1077 | else if (ch > 0xFFFF) | |
1078 | { | |
1079 | buf[0] = '\\'; | |
1080 | buf[1] = 'U'; | |
1081 | buf[2] = hex[(ch & 0xF00000) >> 20]; | |
1082 | buf[3] = hex[(ch & 0xF0000) >> 16]; | |
1083 | buf[4] = hex[(ch & 0xF000) >> 12]; | |
1084 | buf[5] = hex[(ch & 0xF00) >> 8]; | |
1085 | buf[6] = hex[(ch & 0xF0) >> 4]; | |
1086 | buf[7] = hex[(ch & 0xF)]; | |
1087 | scm_lfwrite (buf, 8, port); | |
1088 | } | |
33d92fe6 LC |
1089 | } |
1090 | else | |
f4bc4e59 LC |
1091 | { |
1092 | /* Print an R6RS variable-length hex escape: "\xNNNN;". */ | |
1093 | scm_t_wchar ch2 = ch; | |
1094 | ||
1095 | int i = 8; | |
1096 | buf[i] = ';'; | |
1097 | i --; | |
1098 | if (ch == 0) | |
1099 | buf[i--] = '0'; | |
1100 | else | |
1101 | while (ch2 > 0) | |
1102 | { | |
1103 | buf[i] = hex[ch2 & 0xF]; | |
1104 | ch2 >>= 4; | |
1105 | i --; | |
1106 | } | |
1107 | buf[i] = 'x'; | |
1108 | i --; | |
1109 | buf[i] = '\\'; | |
1110 | scm_lfwrite (buf + i, 9 - i, port); | |
1111 | } | |
33d92fe6 LC |
1112 | } |
1113 | else | |
f4bc4e59 LC |
1114 | { |
1115 | /* Represent CH using the character escape syntax. */ | |
1116 | const char *name; | |
33d92fe6 | 1117 | |
f4bc4e59 LC |
1118 | name = scm_i_charname (SCM_MAKE_CHAR (ch)); |
1119 | if (name != NULL) | |
1120 | scm_puts (name, port); | |
1121 | else | |
1122 | PRINT_CHAR_ESCAPE (ch, port); | |
1123 | } | |
33d92fe6 LC |
1124 | } |
1125 | ||
07f49ac7 LC |
1126 | /* Write CH to PORT, escaping it if it's non-graphic or not |
1127 | representable in PORT's encoding. If STRING_ESCAPES_P is true and CH | |
1128 | needs to be escaped, it is escaped using the in-string escape syntax; | |
1129 | otherwise the character escape syntax is used. */ | |
1130 | static void | |
1131 | write_character (scm_t_wchar ch, SCM port, int string_escapes_p) | |
1132 | { | |
1133 | int printed = 0; | |
f4bc4e59 LC |
1134 | scm_t_string_failed_conversion_handler strategy; |
1135 | ||
478848cb | 1136 | strategy = PORT_CONVERSION_HANDLER (port); |
07f49ac7 LC |
1137 | |
1138 | if (string_escapes_p) | |
1139 | { | |
1140 | /* Check if CH deserves special treatment. */ | |
1141 | if (ch == '"' || ch == '\\') | |
1142 | { | |
f4bc4e59 LC |
1143 | display_character ('\\', port, iconveh_question_mark); |
1144 | display_character (ch, port, strategy); | |
07f49ac7 LC |
1145 | printed = 1; |
1146 | } | |
8500b186 AW |
1147 | else if (ch == '\n' && SCM_PRINT_ESCAPE_NEWLINES_P) |
1148 | { | |
1149 | display_character ('\\', port, iconveh_question_mark); | |
1150 | display_character ('n', port, strategy); | |
1151 | printed = 1; | |
1152 | } | |
07f49ac7 LC |
1153 | else if (ch == ' ' || ch == '\n') |
1154 | { | |
f4bc4e59 | 1155 | display_character (ch, port, strategy); |
07f49ac7 LC |
1156 | printed = 1; |
1157 | } | |
1158 | } | |
1159 | else | |
33d92fe6 | 1160 | { |
f4bc4e59 | 1161 | display_string ("#\\", 1, 2, port, iconveh_question_mark); |
33d92fe6 LC |
1162 | |
1163 | if (uc_combining_class (ch) != UC_CCC_NR) | |
1164 | /* Character is a combining character, so attempt to | |
1165 | pretty-print it. */ | |
1166 | printed = write_combining_character (ch, port); | |
1167 | } | |
07f49ac7 LC |
1168 | |
1169 | if (!printed | |
1170 | && uc_is_general_category_withtable (ch, | |
1171 | UC_CATEGORY_MASK_L | | |
1172 | UC_CATEGORY_MASK_M | | |
1173 | UC_CATEGORY_MASK_N | | |
1174 | UC_CATEGORY_MASK_P | | |
1175 | UC_CATEGORY_MASK_S)) | |
1176 | /* CH is graphic; attempt to display it. */ | |
1177 | printed = display_character (ch, port, iconveh_error); | |
1178 | ||
1179 | if (!printed) | |
f4bc4e59 LC |
1180 | /* CH isn't graphic or cannot be represented in PORT's encoding. */ |
1181 | write_character_escaped (ch, string_escapes_p, port); | |
9c44cd45 | 1182 | } |
0f2d19dd | 1183 | |
b908768a LC |
1184 | /* Display STR to PORT from START inclusive to END exclusive. */ |
1185 | void | |
1186 | scm_i_display_substring (SCM str, size_t start, size_t end, SCM port) | |
1187 | { | |
1188 | int narrow_p; | |
1189 | const char *buf; | |
1190 | size_t len, printed; | |
1191 | ||
1192 | buf = scm_i_string_data (str); | |
1193 | len = end - start; | |
1194 | narrow_p = scm_i_is_narrow_string (str); | |
1195 | buf += start * (narrow_p ? sizeof (char) : sizeof (scm_t_wchar)); | |
1196 | ||
1197 | printed = display_string (buf, narrow_p, end - start, port, | |
1198 | PORT_CONVERSION_HANDLER (port)); | |
1199 | ||
1200 | if (SCM_UNLIKELY (printed < len)) | |
1201 | scm_encoding_error (__func__, errno, | |
1202 | "cannot convert to output locale", | |
1203 | port, scm_c_string_ref (str, printed + start)); | |
1204 | } | |
1205 | ||
1206 | \f | |
0f2d19dd JB |
1207 | /* Print an integer. |
1208 | */ | |
1cc91f1b | 1209 | |
0f2d19dd | 1210 | void |
a406c9e9 | 1211 | scm_intprint (scm_t_intmax n, int radix, SCM port) |
0f2d19dd JB |
1212 | { |
1213 | char num_buf[SCM_INTBUFLEN]; | |
b7f3516f | 1214 | scm_lfwrite (num_buf, scm_iint2str (n, radix, num_buf), port); |
0f2d19dd JB |
1215 | } |
1216 | ||
a406c9e9 MV |
1217 | void |
1218 | scm_uintprint (scm_t_uintmax n, int radix, SCM port) | |
1219 | { | |
1220 | char num_buf[SCM_INTBUFLEN]; | |
1221 | scm_lfwrite (num_buf, scm_iuint2str (n, radix, num_buf), port); | |
1222 | } | |
1223 | ||
0f2d19dd JB |
1224 | /* Print an object of unrecognized type. |
1225 | */ | |
1cc91f1b | 1226 | |
0f2d19dd | 1227 | void |
1bbd0b84 | 1228 | scm_ipruk (char *hdr, SCM ptr, SCM port) |
0f2d19dd | 1229 | { |
b7f3516f TT |
1230 | scm_puts ("#<unknown-", port); |
1231 | scm_puts (hdr, port); | |
26224b3f | 1232 | if (1) /* (scm_in_heap_p (ptr)) */ /* FIXME */ |
0f2d19dd | 1233 | { |
b7f3516f | 1234 | scm_puts (" (0x", port); |
0345e278 | 1235 | scm_uintprint (SCM_CELL_WORD_0 (ptr), 16, port); |
b7f3516f | 1236 | scm_puts (" . 0x", port); |
0345e278 | 1237 | scm_uintprint (SCM_CELL_WORD_1 (ptr), 16, port); |
b7f3516f | 1238 | scm_puts (") @", port); |
0f2d19dd | 1239 | } |
b7f3516f | 1240 | scm_puts (" 0x", port); |
0345e278 | 1241 | scm_uintprint (SCM_UNPACK (ptr), 16, port); |
b7f3516f | 1242 | scm_putc ('>', port); |
0f2d19dd JB |
1243 | } |
1244 | ||
1cc91f1b | 1245 | |
904a077d | 1246 | /* Print a list. |
22a52da1 | 1247 | */ |
0f2d19dd | 1248 | void |
34d19ef6 | 1249 | scm_iprlist (char *hdr, SCM exp, int tlr, SCM port, scm_print_state *pstate) |
0f2d19dd | 1250 | { |
c62fbfe1 | 1251 | register SCM hare, tortoise; |
c014a02e | 1252 | long floor = pstate->top - 2; |
b7f3516f | 1253 | scm_puts (hdr, port); |
0f2d19dd | 1254 | /* CHECK_INTS; */ |
c62fbfe1 MD |
1255 | if (pstate->fancyp) |
1256 | goto fancy_printing; | |
1257 | ||
1258 | /* Run a hare and tortoise so that total time complexity will be | |
1259 | O(depth * N) instead of O(N^2). */ | |
1260 | hare = SCM_CDR (exp); | |
1261 | tortoise = exp; | |
d2e53ed6 | 1262 | while (scm_is_pair (hare)) |
c62fbfe1 | 1263 | { |
bc36d050 | 1264 | if (scm_is_eq (hare, tortoise)) |
c62fbfe1 MD |
1265 | goto fancy_printing; |
1266 | hare = SCM_CDR (hare); | |
d2e53ed6 | 1267 | if (!scm_is_pair (hare)) |
c62fbfe1 MD |
1268 | break; |
1269 | hare = SCM_CDR (hare); | |
1270 | tortoise = SCM_CDR (tortoise); | |
1271 | } | |
1272 | ||
1273 | /* No cdr cycles intrinsic to this list */ | |
1274 | scm_iprin1 (SCM_CAR (exp), port, pstate); | |
d2e53ed6 | 1275 | for (exp = SCM_CDR (exp); scm_is_pair (exp); exp = SCM_CDR (exp)) |
0f2d19dd | 1276 | { |
c014a02e | 1277 | register long i; |
5ca6dc39 | 1278 | |
c62fbfe1 | 1279 | for (i = floor; i >= 0; --i) |
509759dd | 1280 | if (scm_is_eq (PSTATE_STACK_REF(pstate, i), exp)) |
c62fbfe1 MD |
1281 | goto circref; |
1282 | PUSH_REF (pstate, exp); | |
b7f3516f | 1283 | scm_putc (' ', port); |
0f2d19dd | 1284 | /* CHECK_INTS; */ |
c62fbfe1 | 1285 | scm_iprin1 (SCM_CAR (exp), port, pstate); |
0f2d19dd | 1286 | } |
c96d76b8 | 1287 | if (!SCM_NULL_OR_NIL_P (exp)) |
0f2d19dd | 1288 | { |
b7f3516f | 1289 | scm_puts (" . ", port); |
c62fbfe1 | 1290 | scm_iprin1 (exp, port, pstate); |
0f2d19dd | 1291 | } |
c62fbfe1 | 1292 | |
a51ea417 | 1293 | end: |
b7f3516f | 1294 | scm_putc (tlr, port); |
c62fbfe1 | 1295 | pstate->top = floor + 2; |
a51ea417 | 1296 | return; |
c62fbfe1 MD |
1297 | |
1298 | fancy_printing: | |
1299 | { | |
c014a02e | 1300 | long n = pstate->length; |
c62fbfe1 MD |
1301 | |
1302 | scm_iprin1 (SCM_CAR (exp), port, pstate); | |
1303 | exp = SCM_CDR (exp); --n; | |
d2e53ed6 | 1304 | for (; scm_is_pair (exp); exp = SCM_CDR (exp)) |
c62fbfe1 | 1305 | { |
c014a02e | 1306 | register unsigned long i; |
5ca6dc39 | 1307 | |
c62fbfe1 | 1308 | for (i = 0; i < pstate->top; ++i) |
509759dd | 1309 | if (scm_is_eq (PSTATE_STACK_REF(pstate, i), exp)) |
c62fbfe1 MD |
1310 | goto fancy_circref; |
1311 | if (pstate->fancyp) | |
1312 | { | |
1313 | if (n == 0) | |
1314 | { | |
b7f3516f | 1315 | scm_puts (" ...", port); |
c62fbfe1 MD |
1316 | goto skip_tail; |
1317 | } | |
1318 | else | |
1319 | --n; | |
1320 | } | |
1321 | PUSH_REF(pstate, exp); | |
1322 | ++pstate->list_offset; | |
b7f3516f | 1323 | scm_putc (' ', port); |
c62fbfe1 MD |
1324 | /* CHECK_INTS; */ |
1325 | scm_iprin1 (SCM_CAR (exp), port, pstate); | |
1326 | } | |
1327 | } | |
c96d76b8 | 1328 | if (!SCM_NULL_OR_NIL_P (exp)) |
c62fbfe1 | 1329 | { |
b7f3516f | 1330 | scm_puts (" . ", port); |
c62fbfe1 MD |
1331 | scm_iprin1 (exp, port, pstate); |
1332 | } | |
1333 | skip_tail: | |
1334 | pstate->list_offset -= pstate->top - floor - 2; | |
a51ea417 | 1335 | goto end; |
a51ea417 | 1336 | |
c62fbfe1 MD |
1337 | fancy_circref: |
1338 | pstate->list_offset -= pstate->top - floor - 2; | |
1339 | ||
1340 | circref: | |
b7f3516f | 1341 | scm_puts (" . ", port); |
c62fbfe1 MD |
1342 | print_circref (port, pstate, exp); |
1343 | goto end; | |
0f2d19dd JB |
1344 | } |
1345 | ||
1346 | \f | |
1347 | ||
bb35f315 MV |
1348 | int |
1349 | scm_valid_oport_value_p (SCM val) | |
1350 | { | |
368cf54d GB |
1351 | return (SCM_OPOUTPORTP (val) |
1352 | || (SCM_PORT_WITH_PS_P (val) | |
1353 | && SCM_OPOUTPORTP (SCM_PORT_WITH_PS_PORT (val)))); | |
bb35f315 MV |
1354 | } |
1355 | ||
8b840115 | 1356 | /* SCM_GPROC(s_write, "write", 1, 1, 0, scm_write, g_write); */ |
1cc91f1b | 1357 | |
0f2d19dd | 1358 | SCM |
1bbd0b84 | 1359 | scm_write (SCM obj, SCM port) |
0f2d19dd JB |
1360 | { |
1361 | if (SCM_UNBNDP (port)) | |
9de87eea | 1362 | port = scm_current_output_port (); |
3eb7e6ee JB |
1363 | |
1364 | SCM_ASSERT (scm_valid_oport_value_p (port), port, SCM_ARG2, s_write); | |
bb35f315 | 1365 | |
a51ea417 | 1366 | scm_prin1 (obj, port, 1); |
0f2d19dd JB |
1367 | return SCM_UNSPECIFIED; |
1368 | } | |
1369 | ||
1370 | ||
8b840115 | 1371 | /* SCM_GPROC(s_display, "display", 1, 1, 0, scm_display, g_display); */ |
1cc91f1b | 1372 | |
0f2d19dd | 1373 | SCM |
1bbd0b84 | 1374 | scm_display (SCM obj, SCM port) |
0f2d19dd JB |
1375 | { |
1376 | if (SCM_UNBNDP (port)) | |
9de87eea | 1377 | port = scm_current_output_port (); |
3eb7e6ee JB |
1378 | |
1379 | SCM_ASSERT (scm_valid_oport_value_p (port), port, SCM_ARG2, s_display); | |
bb35f315 | 1380 | |
a51ea417 | 1381 | scm_prin1 (obj, port, 0); |
0f2d19dd JB |
1382 | return SCM_UNSPECIFIED; |
1383 | } | |
1384 | ||
70d63753 GB |
1385 | |
1386 | SCM_DEFINE (scm_simple_format, "simple-format", 2, 0, 1, | |
1387 | (SCM destination, SCM message, SCM args), | |
eca65e90 MG |
1388 | "Write @var{message} to @var{destination}, defaulting to\n" |
1389 | "the current output port.\n" | |
1390 | "@var{message} can contain @code{~A} (was @code{%s}) and\n" | |
1391 | "@code{~S} (was @code{%S}) escapes. When printed,\n" | |
1392 | "the escapes are replaced with corresponding members of\n" | |
b7e64f8b | 1393 | "@var{args}:\n" |
eca65e90 MG |
1394 | "@code{~A} formats using @code{display} and @code{~S} formats\n" |
1395 | "using @code{write}.\n" | |
1396 | "If @var{destination} is @code{#t}, then use the current output\n" | |
1397 | "port, if @var{destination} is @code{#f}, then return a string\n" | |
1398 | "containing the formatted text. Does not add a trailing newline.") | |
70d63753 GB |
1399 | #define FUNC_NAME s_scm_simple_format |
1400 | { | |
dfd03fb9 | 1401 | SCM port, answer = SCM_UNSPECIFIED; |
70d63753 GB |
1402 | int fReturnString = 0; |
1403 | int writingp; | |
889975e5 | 1404 | size_t start, p, end; |
70d63753 | 1405 | |
bc36d050 | 1406 | if (scm_is_eq (destination, SCM_BOOL_T)) |
daba1a71 | 1407 | { |
9de87eea | 1408 | destination = port = scm_current_output_port (); |
daba1a71 | 1409 | } |
7888309b | 1410 | else if (scm_is_false (destination)) |
daba1a71 MD |
1411 | { |
1412 | fReturnString = 1; | |
0b2c2ba3 | 1413 | port = scm_mkstrport (SCM_INUM0, SCM_BOOL_F, |
dfd03fb9 MD |
1414 | SCM_OPN | SCM_WRTNG, |
1415 | FUNC_NAME); | |
1416 | destination = port; | |
daba1a71 MD |
1417 | } |
1418 | else | |
1419 | { | |
1420 | SCM_VALIDATE_OPORT_VALUE (1, destination); | |
dfd03fb9 | 1421 | port = SCM_COERCE_OUTPORT (destination); |
daba1a71 MD |
1422 | } |
1423 | SCM_VALIDATE_STRING (2, message); | |
af45e3b0 | 1424 | SCM_VALIDATE_REST_ARGUMENT (args); |
70d63753 | 1425 | |
889975e5 MG |
1426 | p = 0; |
1427 | start = 0; | |
1428 | end = scm_i_string_length (message); | |
b24b5e13 | 1429 | for (p = start; p != end; ++p) |
889975e5 | 1430 | if (scm_i_string_ref (message, p) == '~') |
70d63753 | 1431 | { |
b24b5e13 | 1432 | if (++p == end) |
6662998f MV |
1433 | break; |
1434 | ||
889975e5 | 1435 | switch (scm_i_string_ref (message, p)) |
6662998f MV |
1436 | { |
1437 | case 'A': case 'a': | |
1438 | writingp = 0; | |
1439 | break; | |
1440 | case 'S': case 's': | |
1441 | writingp = 1; | |
1442 | break; | |
1443 | case '~': | |
889975e5 | 1444 | scm_lfwrite_substr (message, start, p, port); |
6662998f MV |
1445 | start = p + 1; |
1446 | continue; | |
1447 | case '%': | |
889975e5 | 1448 | scm_lfwrite_substr (message, start, p - 1, port); |
dfd03fb9 | 1449 | scm_newline (port); |
6662998f MV |
1450 | start = p + 1; |
1451 | continue; | |
1452 | default: | |
1afff620 | 1453 | SCM_MISC_ERROR ("FORMAT: Unsupported format option ~~~A - use (ice-9 format) instead", |
889975e5 | 1454 | scm_list_1 (SCM_MAKE_CHAR (scm_i_string_ref (message, p)))); |
6662998f MV |
1455 | |
1456 | } | |
70d63753 | 1457 | |
6662998f | 1458 | |
d2e53ed6 | 1459 | if (!scm_is_pair (args)) |
1afff620 | 1460 | SCM_MISC_ERROR ("FORMAT: Missing argument for ~~~A", |
889975e5 | 1461 | scm_list_1 (SCM_MAKE_CHAR (scm_i_string_ref (message, p)))); |
6662998f | 1462 | |
889975e5 | 1463 | scm_lfwrite_substr (message, start, p - 1, port); |
dfd03fb9 | 1464 | /* we pass destination here */ |
70d63753 GB |
1465 | scm_prin1 (SCM_CAR (args), destination, writingp); |
1466 | args = SCM_CDR (args); | |
1467 | start = p + 1; | |
1468 | } | |
6662998f | 1469 | |
889975e5 | 1470 | scm_lfwrite_substr (message, start, p, port); |
bc36d050 | 1471 | if (!scm_is_eq (args, SCM_EOL)) |
1afff620 KN |
1472 | SCM_MISC_ERROR ("FORMAT: ~A superfluous arguments", |
1473 | scm_list_1 (scm_length (args))); | |
70d63753 GB |
1474 | |
1475 | if (fReturnString) | |
1476 | answer = scm_strport_to_string (destination); | |
1477 | ||
daba1a71 | 1478 | return scm_return_first (answer, message); |
70d63753 GB |
1479 | } |
1480 | #undef FUNC_NAME | |
1481 | ||
1482 | ||
3b3b36dd | 1483 | SCM_DEFINE (scm_newline, "newline", 0, 1, 0, |
b450f070 | 1484 | (SCM port), |
8f85c0c6 NJ |
1485 | "Send a newline to @var{port}.\n" |
1486 | "If @var{port} is omitted, send to the current output port.") | |
1bbd0b84 | 1487 | #define FUNC_NAME s_scm_newline |
0f2d19dd JB |
1488 | { |
1489 | if (SCM_UNBNDP (port)) | |
9de87eea | 1490 | port = scm_current_output_port (); |
3eb7e6ee | 1491 | |
34d19ef6 | 1492 | SCM_VALIDATE_OPORT_VALUE (1, port); |
bb35f315 | 1493 | |
0ef4ae82 | 1494 | scm_putc ('\n', SCM_COERCE_OUTPORT (port)); |
0f2d19dd JB |
1495 | return SCM_UNSPECIFIED; |
1496 | } | |
1bbd0b84 | 1497 | #undef FUNC_NAME |
0f2d19dd | 1498 | |
3b3b36dd | 1499 | SCM_DEFINE (scm_write_char, "write-char", 1, 1, 0, |
b450f070 | 1500 | (SCM chr, SCM port), |
eca65e90 | 1501 | "Send character @var{chr} to @var{port}.") |
1bbd0b84 | 1502 | #define FUNC_NAME s_scm_write_char |
0f2d19dd JB |
1503 | { |
1504 | if (SCM_UNBNDP (port)) | |
9de87eea | 1505 | port = scm_current_output_port (); |
3eb7e6ee | 1506 | |
34d19ef6 HWN |
1507 | SCM_VALIDATE_CHAR (1, chr); |
1508 | SCM_VALIDATE_OPORT_VALUE (2, port); | |
07f49ac7 LC |
1509 | |
1510 | port = SCM_COERCE_OUTPORT (port); | |
1511 | if (!display_character (SCM_CHAR (chr), port, | |
478848cb | 1512 | PORT_CONVERSION_HANDLER (port))) |
07f49ac7 LC |
1513 | scm_encoding_error (__func__, errno, |
1514 | "cannot convert to output locale", | |
6851d3be | 1515 | port, chr); |
07f49ac7 | 1516 | |
0f2d19dd JB |
1517 | return SCM_UNSPECIFIED; |
1518 | } | |
1bbd0b84 | 1519 | #undef FUNC_NAME |
0f2d19dd | 1520 | |
0f2d19dd JB |
1521 | \f |
1522 | ||
bb35f315 | 1523 | /* Call back to Scheme code to do the printing of special objects |
c19bc088 MD |
1524 | * (like structs). SCM_PRINTER_APPLY applies PROC to EXP and a smob |
1525 | * containing PORT and PSTATE. This object can be used as the port for | |
1526 | * display/write etc to continue the current print chain. The REVEALED | |
1527 | * field of PSTATE is set to true to indicate that the print state has | |
1528 | * escaped to Scheme and thus has to be freed by the GC. | |
1529 | */ | |
1530 | ||
92c2555f | 1531 | scm_t_bits scm_tc16_port_with_ps; |
c19bc088 MD |
1532 | |
1533 | /* Print exactly as the port itself would */ | |
1534 | ||
1535 | static int | |
e841c3e0 | 1536 | port_with_ps_print (SCM obj, SCM port, scm_print_state *pstate) |
c19bc088 MD |
1537 | { |
1538 | obj = SCM_PORT_WITH_PS_PORT (obj); | |
1539 | return scm_ptobs[SCM_PTOBNUM (obj)].print (obj, port, pstate); | |
1540 | } | |
c4f37e80 MV |
1541 | |
1542 | SCM | |
1bbd0b84 | 1543 | scm_printer_apply (SCM proc, SCM exp, SCM port, scm_print_state *pstate) |
c4f37e80 | 1544 | { |
bb35f315 | 1545 | pstate->revealed = 1; |
dfd03fb9 MD |
1546 | return scm_call_2 (proc, exp, |
1547 | scm_i_port_with_print_state (port, pstate->handle)); | |
c19bc088 MD |
1548 | } |
1549 | ||
dfd03fb9 | 1550 | SCM_DEFINE (scm_port_with_print_state, "port-with-print-state", 1, 1, 0, |
1bbd0b84 | 1551 | (SCM port, SCM pstate), |
71331188 | 1552 | "Create a new port which behaves like @var{port}, but with an\n" |
dfd03fb9 MD |
1553 | "included print state @var{pstate}. @var{pstate} is optional.\n" |
1554 | "If @var{pstate} isn't supplied and @var{port} already has\n" | |
1555 | "a print state, the old print state is reused.") | |
1bbd0b84 | 1556 | #define FUNC_NAME s_scm_port_with_print_state |
c19bc088 | 1557 | { |
34d19ef6 | 1558 | SCM_VALIDATE_OPORT_VALUE (1, port); |
dfd03fb9 MD |
1559 | if (!SCM_UNBNDP (pstate)) |
1560 | SCM_VALIDATE_PRINTSTATE (2, pstate); | |
1561 | return scm_i_port_with_print_state (port, pstate); | |
c19bc088 | 1562 | } |
1bbd0b84 | 1563 | #undef FUNC_NAME |
c19bc088 | 1564 | |
a1ec6916 | 1565 | SCM_DEFINE (scm_get_print_state, "get-print-state", 1, 0, 0, |
1bbd0b84 | 1566 | (SCM port), |
71331188 MG |
1567 | "Return the print state of the port @var{port}. If @var{port}\n" |
1568 | "has no associated print state, @code{#f} is returned.") | |
1bbd0b84 | 1569 | #define FUNC_NAME s_scm_get_print_state |
c19bc088 | 1570 | { |
368cf54d GB |
1571 | if (SCM_PORT_WITH_PS_P (port)) |
1572 | return SCM_PORT_WITH_PS_PS (port); | |
f5f2dcff | 1573 | if (SCM_OUTPUT_PORT_P (port)) |
368cf54d | 1574 | return SCM_BOOL_F; |
276dd677 | 1575 | SCM_WRONG_TYPE_ARG (1, port); |
c4f37e80 | 1576 | } |
1bbd0b84 | 1577 | #undef FUNC_NAME |
bb35f315 | 1578 | |
c4f37e80 | 1579 | \f |
1cc91f1b | 1580 | |
0f2d19dd JB |
1581 | void |
1582 | scm_init_print () | |
0f2d19dd | 1583 | { |
66b1dbf6 | 1584 | SCM type; |
d5cf5324 | 1585 | |
d5cf5324 DH |
1586 | scm_gc_register_root (&print_state_pool); |
1587 | scm_gc_register_root (&scm_print_state_vtable); | |
66b1dbf6 AW |
1588 | type = scm_make_vtable (scm_from_locale_string (SCM_PRINT_STATE_LAYOUT), |
1589 | SCM_BOOL_F); | |
4a655e50 | 1590 | scm_set_struct_vtable_name_x (type, scm_from_latin1_symbol ("print-state")); |
bb35f315 | 1591 | scm_print_state_vtable = type; |
c4f37e80 | 1592 | |
c19bc088 MD |
1593 | /* Don't want to bind a wrapper class in GOOPS, so pass 0 as arg1. */ |
1594 | scm_tc16_port_with_ps = scm_make_smob_type (0, 0); | |
e841c3e0 | 1595 | scm_set_smob_print (scm_tc16_port_with_ps, port_with_ps_print); |
81ae25da | 1596 | |
a0599745 | 1597 | #include "libguile/print.x" |
475fa9a5 | 1598 | |
8500b186 AW |
1599 | scm_init_opts (scm_print_options, scm_print_opts); |
1600 | scm_print_opts[SCM_PRINT_HIGHLIGHT_PREFIX_I].val = | |
1601 | SCM_UNPACK (scm_from_locale_string ("{")); | |
1602 | scm_print_opts[SCM_PRINT_HIGHLIGHT_SUFFIX_I].val = | |
1603 | SCM_UNPACK (scm_from_locale_string ("}")); | |
475fa9a5 | 1604 | scm_print_opts[SCM_PRINT_KEYWORD_STYLE_I].val = SCM_UNPACK (sym_reader); |
0f2d19dd | 1605 | } |
89e00824 ML |
1606 | |
1607 | /* | |
1608 | Local Variables: | |
1609 | c-file-style: "gnu" | |
1610 | End: | |
1611 | */ |