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 | { |
15671c6e AW |
413 | if (!display_character (c, port, strategy)) |
414 | scm_encoding_error ("print_extended_symbol", errno, | |
415 | "cannot convert to output locale", | |
416 | port, SCM_MAKE_CHAR (c)); | |
2e9fc9fc AW |
417 | } |
418 | else | |
419 | { | |
420 | display_string ("\\x", 1, 2, port, iconveh_question_mark); | |
421 | scm_intprint (c, 16, port); | |
422 | display_character (';', port, iconveh_question_mark); | |
15671c6e AW |
423 | } |
424 | } | |
425 | ||
426 | scm_lfwrite ("}#", 2, port); | |
427 | } | |
428 | ||
429 | /* FIXME: allow R6RS hex escapes instead of #{...}#. */ | |
430 | void | |
431 | scm_i_print_symbol_name (SCM sym, SCM port) | |
432 | { | |
433 | if (symbol_has_extended_read_syntax (sym)) | |
434 | print_extended_symbol (sym, port); | |
435 | else | |
436 | print_normal_symbol (sym, port); | |
6662998f MV |
437 | } |
438 | ||
e23106d5 MG |
439 | void |
440 | scm_print_symbol_name (const char *str, size_t len, SCM port) | |
441 | { | |
442 | SCM symbol = scm_from_locale_symboln (str, len); | |
ab33782c | 443 | scm_i_print_symbol_name (symbol, port); |
e23106d5 MG |
444 | } |
445 | ||
c62fbfe1 | 446 | /* Print generally. Handles both write and display according to PSTATE. |
0f2d19dd | 447 | */ |
8b840115 MD |
448 | SCM_GPROC(s_write, "write", 1, 1, 0, scm_write, g_write); |
449 | SCM_GPROC(s_display, "display", 1, 1, 0, scm_display, g_display); | |
1cc91f1b | 450 | |
d232520a MV |
451 | static void iprin1 (SCM exp, SCM port, scm_print_state *pstate); |
452 | ||
dea901d6 MG |
453 | |
454 | /* Print a character as an octal or hex escape. */ | |
455 | #define PRINT_CHAR_ESCAPE(i, port) \ | |
456 | do \ | |
457 | { \ | |
458 | if (!SCM_R6RS_ESCAPES_P) \ | |
459 | scm_intprint (i, 8, port); \ | |
460 | else \ | |
461 | { \ | |
462 | scm_puts ("x", port); \ | |
463 | scm_intprint (i, 16, port); \ | |
464 | } \ | |
465 | } \ | |
466 | while (0) | |
467 | ||
468 | ||
0f2d19dd | 469 | void |
1bbd0b84 | 470 | scm_iprin1 (SCM exp, SCM port, scm_print_state *pstate) |
d232520a MV |
471 | { |
472 | if (pstate->fancyp | |
473 | && scm_is_true (scm_memq (exp, pstate->highlight_objects))) | |
474 | { | |
81ae25da | 475 | scm_display (SCM_PRINT_HIGHLIGHT_PREFIX, port); |
d232520a | 476 | iprin1 (exp, port, pstate); |
81ae25da | 477 | scm_display (SCM_PRINT_HIGHLIGHT_SUFFIX, port); |
d232520a MV |
478 | } |
479 | else | |
480 | iprin1 (exp, port, pstate); | |
481 | } | |
482 | ||
483 | static void | |
484 | iprin1 (SCM exp, SCM port, scm_print_state *pstate) | |
0f2d19dd | 485 | { |
54778cd3 | 486 | switch (SCM_ITAG3 (exp)) |
0f2d19dd | 487 | { |
e34f941a DH |
488 | case scm_tc3_tc7_1: |
489 | case scm_tc3_tc7_2: | |
490 | /* These tc3 tags should never occur in an immediate value. They are | |
491 | * only used in cell types of non-immediates, i. e. the value returned | |
492 | * by SCM_CELL_TYPE (exp) can use these tags. | |
493 | */ | |
494 | scm_ipruk ("immediate", exp, port); | |
495 | break; | |
496 | case scm_tc3_int_1: | |
497 | case scm_tc3_int_2: | |
e11e83f3 | 498 | scm_intprint (SCM_I_INUM (exp), 10, port); |
0f2d19dd | 499 | break; |
e34f941a | 500 | case scm_tc3_imm24: |
7866a09b | 501 | if (SCM_CHARP (exp)) |
0f2d19dd | 502 | { |
b7f3516f | 503 | if (SCM_WRITINGP (pstate)) |
07f49ac7 LC |
504 | write_character (SCM_CHAR (exp), port, 0); |
505 | else | |
b7f3516f | 506 | { |
07f49ac7 | 507 | if (!display_character (SCM_CHAR (exp), port, |
478848cb | 508 | PORT_CONVERSION_HANDLER (port))) |
07f49ac7 LC |
509 | scm_encoding_error (__func__, errno, |
510 | "cannot convert to output locale", | |
6851d3be | 511 | port, exp); |
b7f3516f | 512 | } |
0f2d19dd | 513 | } |
a51ea417 | 514 | else if (SCM_IFLAGP (exp) |
e17d318f DH |
515 | && ((size_t) SCM_IFLAGNUM (exp) < (sizeof iflagnames / sizeof (char *)))) |
516 | { | |
517 | scm_puts (iflagnames [SCM_IFLAGNUM (exp)], port); | |
518 | } | |
0f2d19dd | 519 | else |
e34f941a DH |
520 | { |
521 | /* unknown immediate value */ | |
522 | scm_ipruk ("immediate", exp, port); | |
523 | } | |
0f2d19dd | 524 | break; |
e34f941a | 525 | case scm_tc3_cons: |
0f2d19dd JB |
526 | switch (SCM_TYP7 (exp)) |
527 | { | |
904a077d MV |
528 | case scm_tcs_struct: |
529 | { | |
530 | ENTER_NESTED_DATA (pstate, exp, circref); | |
531 | if (SCM_OBJ_CLASS_FLAGS (exp) & SCM_CLASSF_GOOPS) | |
532 | { | |
533 | SCM pwps, print = pstate->writingp ? g_write : g_display; | |
b2b33168 | 534 | if (SCM_UNPACK (print) == 0) |
904a077d | 535 | goto print_struct; |
dfd03fb9 | 536 | pwps = scm_i_port_with_print_state (port, pstate->handle); |
7663c008 | 537 | pstate->revealed = 1; |
904a077d MV |
538 | scm_call_generic_2 (print, exp, pwps); |
539 | } | |
540 | else | |
541 | { | |
542 | print_struct: | |
543 | scm_print_struct (exp, port, pstate); | |
544 | } | |
545 | EXIT_NESTED_DATA (pstate); | |
546 | } | |
547 | break; | |
0f2d19dd JB |
548 | case scm_tcs_cons_imcar: |
549 | case scm_tcs_cons_nimcar: | |
c62fbfe1 MD |
550 | ENTER_NESTED_DATA (pstate, exp, circref); |
551 | scm_iprlist ("(", exp, ')', port, pstate); | |
552 | EXIT_NESTED_DATA (pstate); | |
a51ea417 MD |
553 | break; |
554 | circref: | |
c62fbfe1 | 555 | print_circref (port, pstate, exp); |
0f2d19dd | 556 | break; |
534c55a9 DH |
557 | case scm_tc7_number: |
558 | switch SCM_TYP16 (exp) { | |
559 | case scm_tc16_big: | |
560 | scm_bigprint (exp, port, pstate); | |
561 | break; | |
562 | case scm_tc16_real: | |
563 | scm_print_real (exp, port, pstate); | |
564 | break; | |
565 | case scm_tc16_complex: | |
566 | scm_print_complex (exp, port, pstate); | |
567 | break; | |
f92e85f7 MV |
568 | case scm_tc16_fraction: |
569 | scm_i_print_fraction (exp, port, pstate); | |
570 | break; | |
534c55a9 DH |
571 | } |
572 | break; | |
9c44cd45 MG |
573 | case scm_tc7_string: |
574 | if (SCM_WRITINGP (pstate)) | |
575 | { | |
07f49ac7 | 576 | size_t len, i; |
9c44cd45 | 577 | |
f4bc4e59 | 578 | display_character ('"', port, iconveh_question_mark); |
9c44cd45 MG |
579 | len = scm_i_string_length (exp); |
580 | for (i = 0; i < len; ++i) | |
07f49ac7 LC |
581 | write_character (scm_i_string_ref (exp, i), port, 1); |
582 | ||
f4bc4e59 | 583 | display_character ('"', port, iconveh_question_mark); |
9c44cd45 MG |
584 | scm_remember_upto_here_1 (exp); |
585 | } | |
586 | else | |
f4bc4e59 LC |
587 | { |
588 | size_t len, printed; | |
589 | ||
590 | len = scm_i_string_length (exp); | |
591 | printed = display_string (scm_i_string_data (exp), | |
592 | scm_i_is_narrow_string (exp), | |
593 | len, port, | |
478848cb | 594 | PORT_CONVERSION_HANDLER (port)); |
f4bc4e59 | 595 | if (SCM_UNLIKELY (printed < len)) |
f4bc4e59 LC |
596 | scm_encoding_error (__func__, errno, |
597 | "cannot convert to output locale", | |
6851d3be | 598 | port, scm_c_string_ref (exp, printed)); |
f4bc4e59 LC |
599 | } |
600 | ||
9c44cd45 MG |
601 | scm_remember_upto_here_1 (exp); |
602 | break; | |
28b06554 | 603 | case scm_tc7_symbol: |
cc95e00a | 604 | if (scm_i_symbol_is_interned (exp)) |
9ff28a13 | 605 | { |
e23106d5 | 606 | scm_i_print_symbol_name (exp, port); |
9ff28a13 MV |
607 | scm_remember_upto_here_1 (exp); |
608 | } | |
609 | else | |
610 | { | |
611 | scm_puts ("#<uninterned-symbol ", port); | |
e23106d5 | 612 | scm_i_print_symbol_name (exp, port); |
9ff28a13 | 613 | scm_putc (' ', port); |
0345e278 | 614 | scm_uintprint (SCM_UNPACK (exp), 16, port); |
9ff28a13 MV |
615 | scm_putc ('>', port); |
616 | } | |
6662998f | 617 | break; |
e5aca4b5 MV |
618 | case scm_tc7_variable: |
619 | scm_i_variable_print (exp, port, pstate); | |
620 | break; | |
2fb924f6 AW |
621 | case scm_tc7_program: |
622 | scm_i_program_print (exp, port, pstate); | |
623 | break; | |
5b46a8c2 LC |
624 | case scm_tc7_pointer: |
625 | scm_i_pointer_print (exp, port, pstate); | |
e2c2a699 | 626 | break; |
c99de5aa AW |
627 | case scm_tc7_hashtable: |
628 | scm_i_hashtable_print (exp, port, pstate); | |
629 | break; | |
9ea31741 AW |
630 | case scm_tc7_fluid: |
631 | scm_i_fluid_print (exp, port, pstate); | |
632 | break; | |
45cf2428 AW |
633 | case scm_tc7_dynamic_state: |
634 | scm_i_dynamic_state_print (exp, port, pstate); | |
635 | break; | |
6f3b0cc2 AW |
636 | case scm_tc7_frame: |
637 | scm_i_frame_print (exp, port, pstate); | |
638 | break; | |
639 | case scm_tc7_objcode: | |
640 | scm_i_objcode_print (exp, port, pstate); | |
641 | break; | |
642 | case scm_tc7_vm: | |
643 | scm_i_vm_print (exp, port, pstate); | |
644 | break; | |
645 | case scm_tc7_vm_cont: | |
646 | scm_i_vm_cont_print (exp, port, pstate); | |
647 | break; | |
bbb2ecd1 AW |
648 | case scm_tc7_prompt: |
649 | scm_i_prompt_print (exp, port, pstate); | |
650 | break; | |
651 | case scm_tc7_with_fluids: | |
652 | scm_i_with_fluids_print (exp, port, pstate); | |
653 | break; | |
b2637c98 AW |
654 | case scm_tc7_array: |
655 | ENTER_NESTED_DATA (pstate, exp, circref); | |
656 | scm_i_print_array (exp, port, pstate); | |
88c0a1d5 | 657 | EXIT_NESTED_DATA (pstate); |
b2637c98 AW |
658 | break; |
659 | case scm_tc7_bytevector: | |
660 | scm_i_print_bytevector (exp, port, pstate); | |
661 | break; | |
ff1feca9 AW |
662 | case scm_tc7_bitvector: |
663 | scm_i_print_bitvector (exp, port, pstate); | |
664 | break; | |
0f2d19dd | 665 | case scm_tc7_wvect: |
c62fbfe1 | 666 | ENTER_NESTED_DATA (pstate, exp, circref); |
0f2d19dd | 667 | if (SCM_IS_WHVEC (exp)) |
b7f3516f | 668 | scm_puts ("#wh(", port); |
0f2d19dd | 669 | else |
b7f3516f | 670 | scm_puts ("#w(", port); |
0f2d19dd | 671 | goto common_vector_printer; |
0f2d19dd | 672 | case scm_tc7_vector: |
c62fbfe1 | 673 | ENTER_NESTED_DATA (pstate, exp, circref); |
b7f3516f | 674 | scm_puts ("#(", port); |
0f2d19dd | 675 | common_vector_printer: |
9fbaf27c | 676 | { |
c014a02e | 677 | register long i; |
4057a3e0 | 678 | long last = SCM_SIMPLE_VECTOR_LENGTH (exp) - 1; |
9fbaf27c | 679 | int cutp = 0; |
4057a3e0 MV |
680 | if (pstate->fancyp |
681 | && SCM_SIMPLE_VECTOR_LENGTH (exp) > pstate->length) | |
9fbaf27c MD |
682 | { |
683 | last = pstate->length - 1; | |
684 | cutp = 1; | |
685 | } | |
c367c4b4 | 686 | if (SCM_I_WVECTP (exp)) |
9fbaf27c | 687 | { |
c367c4b4 LC |
688 | /* Elements of weak vectors may not be accessed via the |
689 | `SIMPLE_VECTOR_REF ()' macro. */ | |
690 | for (i = 0; i < last; ++i) | |
691 | { | |
692 | scm_iprin1 (scm_c_vector_ref (exp, i), | |
693 | port, pstate); | |
694 | scm_putc (' ', port); | |
695 | } | |
9fbaf27c | 696 | } |
c367c4b4 LC |
697 | else |
698 | { | |
699 | for (i = 0; i < last; ++i) | |
700 | { | |
701 | scm_iprin1 (SCM_SIMPLE_VECTOR_REF (exp, i), port, pstate); | |
702 | scm_putc (' ', port); | |
703 | } | |
704 | } | |
705 | ||
9fbaf27c MD |
706 | if (i == last) |
707 | { | |
708 | /* CHECK_INTS; */ | |
c367c4b4 | 709 | scm_iprin1 (scm_c_vector_ref (exp, i), port, pstate); |
9fbaf27c MD |
710 | } |
711 | if (cutp) | |
b7f3516f TT |
712 | scm_puts (" ...", port); |
713 | scm_putc (')', port); | |
9fbaf27c | 714 | } |
c62fbfe1 | 715 | EXIT_NESTED_DATA (pstate); |
0f2d19dd | 716 | break; |
0f2d19dd | 717 | case scm_tc7_port: |
5ca6dc39 JB |
718 | { |
719 | register long i = SCM_PTOBNUM (exp); | |
720 | if (i < scm_numptob | |
721 | && scm_ptobs[i].print | |
722 | && (scm_ptobs[i].print) (exp, port, pstate)) | |
a51ea417 | 723 | break; |
5ca6dc39 JB |
724 | goto punk; |
725 | } | |
726 | case scm_tc7_smob: | |
7a7f7c53 DH |
727 | ENTER_NESTED_DATA (pstate, exp, circref); |
728 | SCM_SMOB_DESCRIPTOR (exp).print (exp, port, pstate); | |
729 | EXIT_NESTED_DATA (pstate); | |
730 | break; | |
0f2d19dd | 731 | default: |
314b8716 | 732 | /* case scm_tcs_closures: */ |
a51ea417 MD |
733 | punk: |
734 | scm_ipruk ("type", exp, port); | |
0f2d19dd JB |
735 | } |
736 | } | |
737 | } | |
738 | ||
c62fbfe1 MD |
739 | /* Print states are necessary for circular reference safe printing. |
740 | * They are also expensive to allocate. Therefore print states are | |
741 | * kept in a pool so that they can be reused. | |
742 | */ | |
1cc91f1b | 743 | |
bb35f315 MV |
744 | /* The PORT argument can also be a print-state/port pair, which will |
745 | * then be used instead of allocating a new print state. This is | |
746 | * useful for continuing a chain of print calls from Scheme. */ | |
747 | ||
a51ea417 | 748 | void |
1bbd0b84 | 749 | scm_prin1 (SCM exp, SCM port, int writingp) |
a51ea417 | 750 | { |
c4f37e80 MV |
751 | SCM handle = SCM_BOOL_F; /* Will GC protect the handle whilst unlinked */ |
752 | SCM pstate_scm; | |
c62fbfe1 | 753 | scm_print_state *pstate; |
15635be5 | 754 | int old_writingp; |
c62fbfe1 | 755 | |
bb35f315 MV |
756 | /* If PORT is a print-state/port pair, use that. Else create a new |
757 | print-state. */ | |
c4f37e80 | 758 | |
0c95b57d | 759 | if (SCM_PORT_WITH_PS_P (port)) |
bb35f315 | 760 | { |
52235e71 MD |
761 | pstate_scm = SCM_PORT_WITH_PS_PS (port); |
762 | port = SCM_PORT_WITH_PS_PORT (port); | |
bb35f315 MV |
763 | } |
764 | else | |
c62fbfe1 | 765 | { |
c4f37e80 | 766 | /* First try to allocate a print state from the pool */ |
9de87eea | 767 | scm_i_pthread_mutex_lock (&print_state_mutex); |
d2e53ed6 | 768 | if (!scm_is_null (print_state_pool)) |
c4f37e80 | 769 | { |
d5cf5324 DH |
770 | handle = print_state_pool; |
771 | print_state_pool = SCM_CDR (print_state_pool); | |
c4f37e80 | 772 | } |
9de87eea | 773 | scm_i_pthread_mutex_unlock (&print_state_mutex); |
7888309b | 774 | if (scm_is_false (handle)) |
d5cf5324 | 775 | handle = scm_list_1 (make_print_state ()); |
c4f37e80 | 776 | pstate_scm = SCM_CAR (handle); |
c62fbfe1 | 777 | } |
c62fbfe1 | 778 | |
c4f37e80 | 779 | pstate = SCM_PRINT_STATE (pstate_scm); |
15635be5 | 780 | old_writingp = pstate->writingp; |
c62fbfe1 MD |
781 | pstate->writingp = writingp; |
782 | scm_iprin1 (exp, port, pstate); | |
15635be5 | 783 | pstate->writingp = old_writingp; |
c62fbfe1 | 784 | |
bb35f315 MV |
785 | /* Return print state to pool if it has been created above and |
786 | hasn't escaped to Scheme. */ | |
787 | ||
7888309b | 788 | if (scm_is_true (handle) && !pstate->revealed) |
c4f37e80 | 789 | { |
9de87eea | 790 | scm_i_pthread_mutex_lock (&print_state_mutex); |
d5cf5324 DH |
791 | SCM_SETCDR (handle, print_state_pool); |
792 | print_state_pool = handle; | |
9de87eea | 793 | scm_i_pthread_mutex_unlock (&print_state_mutex); |
c4f37e80 | 794 | } |
a51ea417 MD |
795 | } |
796 | ||
f4bc4e59 LC |
797 | /* Convert codepoint CH to UTF-8 and store the result in UTF8. Return |
798 | the number of bytes of the UTF-8-encoded string. */ | |
799 | static size_t | |
800 | codepoint_to_utf8 (scm_t_wchar ch, scm_t_uint8 utf8[4]) | |
9c44cd45 | 801 | { |
f4bc4e59 LC |
802 | size_t len; |
803 | scm_t_uint32 codepoint; | |
804 | ||
805 | codepoint = (scm_t_uint32) ch; | |
07f49ac7 | 806 | |
f4bc4e59 | 807 | if (codepoint <= 0x7f) |
07f49ac7 | 808 | { |
f4bc4e59 LC |
809 | len = 1; |
810 | utf8[0] = (scm_t_uint8) codepoint; | |
811 | } | |
812 | else if (codepoint <= 0x7ffUL) | |
813 | { | |
814 | len = 2; | |
815 | utf8[0] = 0xc0 | (codepoint >> 6); | |
816 | utf8[1] = 0x80 | (codepoint & 0x3f); | |
817 | } | |
818 | else if (codepoint <= 0xffffUL) | |
819 | { | |
820 | len = 3; | |
821 | utf8[0] = 0xe0 | (codepoint >> 12); | |
822 | utf8[1] = 0x80 | ((codepoint >> 6) & 0x3f); | |
823 | utf8[2] = 0x80 | (codepoint & 0x3f); | |
07f49ac7 LC |
824 | } |
825 | else | |
826 | { | |
f4bc4e59 LC |
827 | len = 4; |
828 | utf8[0] = 0xf0 | (codepoint >> 18); | |
829 | utf8[1] = 0x80 | ((codepoint >> 12) & 0x3f); | |
830 | utf8[2] = 0x80 | ((codepoint >> 6) & 0x3f); | |
831 | utf8[3] = 0x80 | (codepoint & 0x3f); | |
832 | } | |
833 | ||
834 | return len; | |
835 | } | |
836 | ||
f4bc4e59 LC |
837 | #define STR_REF(s, x) \ |
838 | (narrow_p \ | |
839 | ? (scm_t_wchar) ((unsigned char *) (s))[x] \ | |
840 | : ((scm_t_wchar *) (s))[x]) | |
841 | ||
7b292a9d LC |
842 | /* Write STR to PORT as UTF-8. STR is a LEN-codepoint string; it is |
843 | narrow if NARROW_P is true, wide otherwise. Return LEN. */ | |
844 | static size_t | |
845 | display_string_as_utf8 (const void *str, int narrow_p, size_t len, | |
846 | SCM port) | |
847 | { | |
848 | size_t printed = 0; | |
849 | ||
850 | while (len > printed) | |
851 | { | |
852 | size_t utf8_len, i; | |
853 | char *input, utf8_buf[256]; | |
854 | ||
855 | /* Convert STR to UTF-8. */ | |
856 | for (i = printed, utf8_len = 0, input = utf8_buf; | |
857 | i < len && utf8_len + 4 < sizeof (utf8_buf); | |
858 | i++) | |
859 | { | |
860 | utf8_len += codepoint_to_utf8 (STR_REF (str, i), | |
861 | (scm_t_uint8 *) input); | |
862 | input = utf8_buf + utf8_len; | |
863 | } | |
864 | ||
865 | /* INPUT was successfully converted, entirely; print the | |
866 | result. */ | |
867 | scm_lfwrite (utf8_buf, utf8_len, port); | |
868 | printed += i - printed; | |
869 | } | |
870 | ||
871 | assert (printed == len); | |
872 | ||
873 | return len; | |
874 | } | |
875 | ||
876 | /* Convert STR through PORT's output conversion descriptor and write the | |
877 | output to PORT. Return the number of codepoints written. */ | |
878 | static size_t | |
879 | display_string_using_iconv (const void *str, int narrow_p, size_t len, | |
880 | SCM port, | |
881 | scm_t_string_failed_conversion_handler strategy) | |
882 | { | |
f4bc4e59 | 883 | size_t printed; |
337edc59 | 884 | scm_t_iconv_descriptors *id; |
cdd3d6c9 | 885 | scm_t_port_internal *pti = SCM_PORT_GET_INTERNAL (port); |
f4bc4e59 | 886 | |
cdd3d6c9 MW |
887 | id = scm_i_port_iconv_descriptors (port, SCM_PORT_WRITE); |
888 | ||
889 | if (SCM_UNLIKELY (pti->at_stream_start_for_bom_write && len > 0)) | |
890 | { | |
891 | scm_t_port *pt = SCM_PTAB_ENTRY (port); | |
892 | ||
893 | /* Record that we're no longer at stream start. */ | |
894 | pti->at_stream_start_for_bom_write = 0; | |
895 | if (pt->rw_random) | |
896 | pti->at_stream_start_for_bom_read = 0; | |
897 | ||
898 | /* Write a BOM if appropriate. */ | |
96965a6e MW |
899 | if (SCM_UNLIKELY (c_strcasecmp(pt->encoding, "UTF-16") == 0 |
900 | || c_strcasecmp(pt->encoding, "UTF-32") == 0)) | |
cdd3d6c9 MW |
901 | display_character (SCM_UNICODE_BOM, port, iconveh_error); |
902 | } | |
f4bc4e59 | 903 | |
f4bc4e59 LC |
904 | printed = 0; |
905 | ||
906 | while (len > printed) | |
907 | { | |
908 | size_t done, utf8_len, input_left, output_left, i; | |
909 | size_t codepoints_read, output_len; | |
910 | char *input, *output; | |
911 | char utf8_buf[256], encoded_output[256]; | |
912 | size_t offsets[256]; | |
913 | ||
914 | /* Convert STR to UTF-8. */ | |
915 | for (i = printed, utf8_len = 0, input = utf8_buf; | |
916 | i < len && utf8_len + 4 < sizeof (utf8_buf); | |
917 | i++) | |
07f49ac7 | 918 | { |
f4bc4e59 LC |
919 | offsets[utf8_len] = i; |
920 | utf8_len += codepoint_to_utf8 (STR_REF (str, i), | |
921 | (scm_t_uint8 *) input); | |
922 | input = utf8_buf + utf8_len; | |
923 | } | |
924 | ||
925 | input = utf8_buf; | |
926 | input_left = utf8_len; | |
927 | ||
928 | output = encoded_output; | |
929 | output_left = sizeof (encoded_output); | |
930 | ||
337edc59 | 931 | done = iconv (id->output_cd, &input, &input_left, |
f4bc4e59 | 932 | &output, &output_left); |
07f49ac7 | 933 | |
f4bc4e59 LC |
934 | output_len = sizeof (encoded_output) - output_left; |
935 | ||
936 | if (SCM_UNLIKELY (done == (size_t) -1)) | |
937 | { | |
b2548e23 AW |
938 | int errno_save = errno; |
939 | ||
f4bc4e59 | 940 | /* Reset the `iconv' state. */ |
337edc59 | 941 | iconv (id->output_cd, NULL, NULL, NULL, NULL); |
f4bc4e59 | 942 | |
7174bc08 LC |
943 | /* Print the OUTPUT_LEN bytes successfully converted. */ |
944 | scm_lfwrite (encoded_output, output_len, port); | |
945 | ||
946 | /* See how many input codepoints these OUTPUT_LEN bytes | |
947 | corresponds to. */ | |
948 | codepoints_read = offsets[input - utf8_buf] - printed; | |
949 | printed += codepoints_read; | |
950 | ||
b2548e23 | 951 | if (errno_save == EILSEQ && |
f4bc4e59 | 952 | strategy != SCM_FAILED_CONVERSION_ERROR) |
07f49ac7 | 953 | { |
f4bc4e59 LC |
954 | /* Conversion failed somewhere in INPUT and we want to |
955 | escape or substitute the offending input character. */ | |
956 | ||
f4bc4e59 | 957 | if (strategy == SCM_FAILED_CONVERSION_ESCAPE_SEQUENCE) |
f1ee6d54 | 958 | { |
f4bc4e59 LC |
959 | scm_t_wchar ch; |
960 | ||
961 | /* Find CH, the offending codepoint, and escape it. */ | |
962 | ch = STR_REF (str, offsets[input - utf8_buf]); | |
963 | write_character_escaped (ch, 1, port); | |
f1ee6d54 | 964 | } |
07f49ac7 | 965 | else |
f4bc4e59 LC |
966 | /* STRATEGY is `SCM_FAILED_CONVERSION_QUESTION_MARK'. */ |
967 | display_string ("?", 1, 1, port, strategy); | |
9c44cd45 | 968 | |
f4bc4e59 LC |
969 | printed++; |
970 | } | |
971 | else | |
972 | /* Something bad happened that we can't handle: bail out. */ | |
973 | break; | |
07f49ac7 LC |
974 | } |
975 | else | |
f4bc4e59 LC |
976 | { |
977 | /* INPUT was successfully converted, entirely; print the | |
978 | result. */ | |
979 | scm_lfwrite (encoded_output, output_len, port); | |
980 | codepoints_read = i - printed; | |
981 | printed += codepoints_read; | |
982 | } | |
07f49ac7 LC |
983 | } |
984 | ||
985 | return printed; | |
7b292a9d LC |
986 | } |
987 | ||
f4bc4e59 | 988 | #undef STR_REF |
7b292a9d LC |
989 | |
990 | /* Display the LEN codepoints in STR to PORT according to STRATEGY; | |
991 | return the number of codepoints successfully displayed. If NARROW_P, | |
992 | then STR is interpreted as a sequence of `char', denoting a Latin-1 | |
993 | string; otherwise it's interpreted as a sequence of | |
994 | `scm_t_wchar'. */ | |
995 | static size_t | |
996 | display_string (const void *str, int narrow_p, | |
997 | size_t len, SCM port, | |
998 | scm_t_string_failed_conversion_handler strategy) | |
999 | ||
1000 | { | |
e4598559 | 1001 | scm_t_port_internal *pti; |
7b292a9d | 1002 | |
e4598559 | 1003 | pti = SCM_PORT_GET_INTERNAL (port); |
7b292a9d | 1004 | |
337edc59 | 1005 | if (pti->encoding_mode == SCM_PORT_ENCODING_MODE_UTF8) |
7b292a9d LC |
1006 | return display_string_as_utf8 (str, narrow_p, len, port); |
1007 | else | |
1008 | return display_string_using_iconv (str, narrow_p, len, | |
1009 | port, strategy); | |
f4bc4e59 LC |
1010 | } |
1011 | ||
1012 | /* Attempt to display CH to PORT according to STRATEGY. Return non-zero | |
1013 | if CH was successfully displayed, zero otherwise (e.g., if it was not | |
1014 | representable in PORT's encoding.) */ | |
1015 | static int | |
1016 | display_character (scm_t_wchar ch, SCM port, | |
1017 | scm_t_string_failed_conversion_handler strategy) | |
1018 | { | |
1019 | return display_string (&ch, 0, 1, port, strategy) == 1; | |
07f49ac7 LC |
1020 | } |
1021 | ||
33d92fe6 LC |
1022 | /* Attempt to pretty-print CH, a combining character, to PORT. Return |
1023 | zero upon failure, non-zero otherwise. The idea is to print CH above | |
1024 | a dotted circle to make it more visible. */ | |
1025 | static int | |
1026 | write_combining_character (scm_t_wchar ch, SCM port) | |
1027 | { | |
f4bc4e59 LC |
1028 | scm_t_wchar str[2]; |
1029 | ||
1030 | str[0] = SCM_CODEPOINT_DOTTED_CIRCLE; | |
1031 | str[1] = ch; | |
1032 | ||
1033 | return display_string (str, 0, 2, port, iconveh_error) == 2; | |
1034 | } | |
33d92fe6 | 1035 | |
f4bc4e59 LC |
1036 | /* Write CH to PORT in its escaped form, using the string escape syntax |
1037 | if STRING_ESCAPES_P is non-zero. */ | |
1038 | static void | |
1039 | write_character_escaped (scm_t_wchar ch, int string_escapes_p, SCM port) | |
1040 | { | |
1041 | if (string_escapes_p) | |
33d92fe6 | 1042 | { |
f4bc4e59 LC |
1043 | /* Represent CH using the in-string escape syntax. */ |
1044 | ||
1045 | static const char hex[] = "0123456789abcdef"; | |
1046 | static const char escapes[7] = "abtnvfr"; | |
1047 | char buf[9]; | |
1048 | ||
1049 | if (ch >= 0x07 && ch <= 0x0D && ch != 0x0A) | |
33d92fe6 | 1050 | { |
f4bc4e59 LC |
1051 | /* Use special escapes for some C0 controls. */ |
1052 | buf[0] = '\\'; | |
1053 | buf[1] = escapes[ch - 0x07]; | |
1054 | scm_lfwrite (buf, 2, port); | |
1055 | } | |
1056 | else if (!SCM_R6RS_ESCAPES_P) | |
1057 | { | |
1058 | if (ch <= 0xFF) | |
1059 | { | |
1060 | buf[0] = '\\'; | |
1061 | buf[1] = 'x'; | |
1062 | buf[2] = hex[ch / 16]; | |
1063 | buf[3] = hex[ch % 16]; | |
1064 | scm_lfwrite (buf, 4, port); | |
1065 | } | |
1066 | else if (ch <= 0xFFFF) | |
1067 | { | |
1068 | buf[0] = '\\'; | |
1069 | buf[1] = 'u'; | |
1070 | buf[2] = hex[(ch & 0xF000) >> 12]; | |
1071 | buf[3] = hex[(ch & 0xF00) >> 8]; | |
1072 | buf[4] = hex[(ch & 0xF0) >> 4]; | |
1073 | buf[5] = hex[(ch & 0xF)]; | |
1074 | scm_lfwrite (buf, 6, port); | |
1075 | } | |
1076 | else if (ch > 0xFFFF) | |
1077 | { | |
1078 | buf[0] = '\\'; | |
1079 | buf[1] = 'U'; | |
1080 | buf[2] = hex[(ch & 0xF00000) >> 20]; | |
1081 | buf[3] = hex[(ch & 0xF0000) >> 16]; | |
1082 | buf[4] = hex[(ch & 0xF000) >> 12]; | |
1083 | buf[5] = hex[(ch & 0xF00) >> 8]; | |
1084 | buf[6] = hex[(ch & 0xF0) >> 4]; | |
1085 | buf[7] = hex[(ch & 0xF)]; | |
1086 | scm_lfwrite (buf, 8, port); | |
1087 | } | |
33d92fe6 LC |
1088 | } |
1089 | else | |
f4bc4e59 LC |
1090 | { |
1091 | /* Print an R6RS variable-length hex escape: "\xNNNN;". */ | |
1092 | scm_t_wchar ch2 = ch; | |
1093 | ||
1094 | int i = 8; | |
1095 | buf[i] = ';'; | |
1096 | i --; | |
1097 | if (ch == 0) | |
1098 | buf[i--] = '0'; | |
1099 | else | |
1100 | while (ch2 > 0) | |
1101 | { | |
1102 | buf[i] = hex[ch2 & 0xF]; | |
1103 | ch2 >>= 4; | |
1104 | i --; | |
1105 | } | |
1106 | buf[i] = 'x'; | |
1107 | i --; | |
1108 | buf[i] = '\\'; | |
1109 | scm_lfwrite (buf + i, 9 - i, port); | |
1110 | } | |
33d92fe6 LC |
1111 | } |
1112 | else | |
f4bc4e59 LC |
1113 | { |
1114 | /* Represent CH using the character escape syntax. */ | |
1115 | const char *name; | |
33d92fe6 | 1116 | |
f4bc4e59 LC |
1117 | name = scm_i_charname (SCM_MAKE_CHAR (ch)); |
1118 | if (name != NULL) | |
1119 | scm_puts (name, port); | |
1120 | else | |
1121 | PRINT_CHAR_ESCAPE (ch, port); | |
1122 | } | |
33d92fe6 LC |
1123 | } |
1124 | ||
07f49ac7 LC |
1125 | /* Write CH to PORT, escaping it if it's non-graphic or not |
1126 | representable in PORT's encoding. If STRING_ESCAPES_P is true and CH | |
1127 | needs to be escaped, it is escaped using the in-string escape syntax; | |
1128 | otherwise the character escape syntax is used. */ | |
1129 | static void | |
1130 | write_character (scm_t_wchar ch, SCM port, int string_escapes_p) | |
1131 | { | |
1132 | int printed = 0; | |
f4bc4e59 LC |
1133 | scm_t_string_failed_conversion_handler strategy; |
1134 | ||
478848cb | 1135 | strategy = PORT_CONVERSION_HANDLER (port); |
07f49ac7 LC |
1136 | |
1137 | if (string_escapes_p) | |
1138 | { | |
1139 | /* Check if CH deserves special treatment. */ | |
1140 | if (ch == '"' || ch == '\\') | |
1141 | { | |
f4bc4e59 LC |
1142 | display_character ('\\', port, iconveh_question_mark); |
1143 | display_character (ch, port, strategy); | |
07f49ac7 LC |
1144 | printed = 1; |
1145 | } | |
8500b186 AW |
1146 | else if (ch == '\n' && SCM_PRINT_ESCAPE_NEWLINES_P) |
1147 | { | |
1148 | display_character ('\\', port, iconveh_question_mark); | |
1149 | display_character ('n', port, strategy); | |
1150 | printed = 1; | |
1151 | } | |
07f49ac7 LC |
1152 | else if (ch == ' ' || ch == '\n') |
1153 | { | |
f4bc4e59 | 1154 | display_character (ch, port, strategy); |
07f49ac7 LC |
1155 | printed = 1; |
1156 | } | |
1157 | } | |
1158 | else | |
33d92fe6 | 1159 | { |
f4bc4e59 | 1160 | display_string ("#\\", 1, 2, port, iconveh_question_mark); |
33d92fe6 LC |
1161 | |
1162 | if (uc_combining_class (ch) != UC_CCC_NR) | |
1163 | /* Character is a combining character, so attempt to | |
1164 | pretty-print it. */ | |
1165 | printed = write_combining_character (ch, port); | |
1166 | } | |
07f49ac7 LC |
1167 | |
1168 | if (!printed | |
1169 | && uc_is_general_category_withtable (ch, | |
1170 | UC_CATEGORY_MASK_L | | |
1171 | UC_CATEGORY_MASK_M | | |
1172 | UC_CATEGORY_MASK_N | | |
1173 | UC_CATEGORY_MASK_P | | |
1174 | UC_CATEGORY_MASK_S)) | |
1175 | /* CH is graphic; attempt to display it. */ | |
1176 | printed = display_character (ch, port, iconveh_error); | |
1177 | ||
1178 | if (!printed) | |
f4bc4e59 LC |
1179 | /* CH isn't graphic or cannot be represented in PORT's encoding. */ |
1180 | write_character_escaped (ch, string_escapes_p, port); | |
9c44cd45 | 1181 | } |
0f2d19dd | 1182 | |
b908768a LC |
1183 | /* Display STR to PORT from START inclusive to END exclusive. */ |
1184 | void | |
1185 | scm_i_display_substring (SCM str, size_t start, size_t end, SCM port) | |
1186 | { | |
1187 | int narrow_p; | |
1188 | const char *buf; | |
1189 | size_t len, printed; | |
1190 | ||
1191 | buf = scm_i_string_data (str); | |
1192 | len = end - start; | |
1193 | narrow_p = scm_i_is_narrow_string (str); | |
1194 | buf += start * (narrow_p ? sizeof (char) : sizeof (scm_t_wchar)); | |
1195 | ||
1196 | printed = display_string (buf, narrow_p, end - start, port, | |
1197 | PORT_CONVERSION_HANDLER (port)); | |
1198 | ||
1199 | if (SCM_UNLIKELY (printed < len)) | |
1200 | scm_encoding_error (__func__, errno, | |
1201 | "cannot convert to output locale", | |
1202 | port, scm_c_string_ref (str, printed + start)); | |
1203 | } | |
1204 | ||
1205 | \f | |
0f2d19dd JB |
1206 | /* Print an integer. |
1207 | */ | |
1cc91f1b | 1208 | |
0f2d19dd | 1209 | void |
a406c9e9 | 1210 | scm_intprint (scm_t_intmax n, int radix, SCM port) |
0f2d19dd JB |
1211 | { |
1212 | char num_buf[SCM_INTBUFLEN]; | |
b7f3516f | 1213 | scm_lfwrite (num_buf, scm_iint2str (n, radix, num_buf), port); |
0f2d19dd JB |
1214 | } |
1215 | ||
a406c9e9 MV |
1216 | void |
1217 | scm_uintprint (scm_t_uintmax n, int radix, SCM port) | |
1218 | { | |
1219 | char num_buf[SCM_INTBUFLEN]; | |
1220 | scm_lfwrite (num_buf, scm_iuint2str (n, radix, num_buf), port); | |
1221 | } | |
1222 | ||
0f2d19dd JB |
1223 | /* Print an object of unrecognized type. |
1224 | */ | |
1cc91f1b | 1225 | |
0f2d19dd | 1226 | void |
1bbd0b84 | 1227 | scm_ipruk (char *hdr, SCM ptr, SCM port) |
0f2d19dd | 1228 | { |
b7f3516f TT |
1229 | scm_puts ("#<unknown-", port); |
1230 | scm_puts (hdr, port); | |
26224b3f | 1231 | if (1) /* (scm_in_heap_p (ptr)) */ /* FIXME */ |
0f2d19dd | 1232 | { |
b7f3516f | 1233 | scm_puts (" (0x", port); |
0345e278 | 1234 | scm_uintprint (SCM_CELL_WORD_0 (ptr), 16, port); |
b7f3516f | 1235 | scm_puts (" . 0x", port); |
0345e278 | 1236 | scm_uintprint (SCM_CELL_WORD_1 (ptr), 16, port); |
b7f3516f | 1237 | scm_puts (") @", port); |
0f2d19dd | 1238 | } |
b7f3516f | 1239 | scm_puts (" 0x", port); |
0345e278 | 1240 | scm_uintprint (SCM_UNPACK (ptr), 16, port); |
b7f3516f | 1241 | scm_putc ('>', port); |
0f2d19dd JB |
1242 | } |
1243 | ||
1cc91f1b | 1244 | |
904a077d | 1245 | /* Print a list. |
22a52da1 | 1246 | */ |
0f2d19dd | 1247 | void |
34d19ef6 | 1248 | scm_iprlist (char *hdr, SCM exp, int tlr, SCM port, scm_print_state *pstate) |
0f2d19dd | 1249 | { |
c62fbfe1 | 1250 | register SCM hare, tortoise; |
c014a02e | 1251 | long floor = pstate->top - 2; |
b7f3516f | 1252 | scm_puts (hdr, port); |
0f2d19dd | 1253 | /* CHECK_INTS; */ |
c62fbfe1 MD |
1254 | if (pstate->fancyp) |
1255 | goto fancy_printing; | |
1256 | ||
1257 | /* Run a hare and tortoise so that total time complexity will be | |
1258 | O(depth * N) instead of O(N^2). */ | |
1259 | hare = SCM_CDR (exp); | |
1260 | tortoise = exp; | |
d2e53ed6 | 1261 | while (scm_is_pair (hare)) |
c62fbfe1 | 1262 | { |
bc36d050 | 1263 | if (scm_is_eq (hare, tortoise)) |
c62fbfe1 MD |
1264 | goto fancy_printing; |
1265 | hare = SCM_CDR (hare); | |
d2e53ed6 | 1266 | if (!scm_is_pair (hare)) |
c62fbfe1 MD |
1267 | break; |
1268 | hare = SCM_CDR (hare); | |
1269 | tortoise = SCM_CDR (tortoise); | |
1270 | } | |
1271 | ||
1272 | /* No cdr cycles intrinsic to this list */ | |
1273 | scm_iprin1 (SCM_CAR (exp), port, pstate); | |
d2e53ed6 | 1274 | for (exp = SCM_CDR (exp); scm_is_pair (exp); exp = SCM_CDR (exp)) |
0f2d19dd | 1275 | { |
c014a02e | 1276 | register long i; |
5ca6dc39 | 1277 | |
c62fbfe1 | 1278 | for (i = floor; i >= 0; --i) |
509759dd | 1279 | if (scm_is_eq (PSTATE_STACK_REF(pstate, i), exp)) |
c62fbfe1 MD |
1280 | goto circref; |
1281 | PUSH_REF (pstate, exp); | |
b7f3516f | 1282 | scm_putc (' ', port); |
0f2d19dd | 1283 | /* CHECK_INTS; */ |
c62fbfe1 | 1284 | scm_iprin1 (SCM_CAR (exp), port, pstate); |
0f2d19dd | 1285 | } |
c96d76b8 | 1286 | if (!SCM_NULL_OR_NIL_P (exp)) |
0f2d19dd | 1287 | { |
b7f3516f | 1288 | scm_puts (" . ", port); |
c62fbfe1 | 1289 | scm_iprin1 (exp, port, pstate); |
0f2d19dd | 1290 | } |
c62fbfe1 | 1291 | |
a51ea417 | 1292 | end: |
b7f3516f | 1293 | scm_putc (tlr, port); |
c62fbfe1 | 1294 | pstate->top = floor + 2; |
a51ea417 | 1295 | return; |
c62fbfe1 MD |
1296 | |
1297 | fancy_printing: | |
1298 | { | |
c014a02e | 1299 | long n = pstate->length; |
c62fbfe1 MD |
1300 | |
1301 | scm_iprin1 (SCM_CAR (exp), port, pstate); | |
1302 | exp = SCM_CDR (exp); --n; | |
d2e53ed6 | 1303 | for (; scm_is_pair (exp); exp = SCM_CDR (exp)) |
c62fbfe1 | 1304 | { |
c014a02e | 1305 | register unsigned long i; |
5ca6dc39 | 1306 | |
c62fbfe1 | 1307 | for (i = 0; i < pstate->top; ++i) |
509759dd | 1308 | if (scm_is_eq (PSTATE_STACK_REF(pstate, i), exp)) |
c62fbfe1 MD |
1309 | goto fancy_circref; |
1310 | if (pstate->fancyp) | |
1311 | { | |
1312 | if (n == 0) | |
1313 | { | |
b7f3516f | 1314 | scm_puts (" ...", port); |
c62fbfe1 MD |
1315 | goto skip_tail; |
1316 | } | |
1317 | else | |
1318 | --n; | |
1319 | } | |
1320 | PUSH_REF(pstate, exp); | |
1321 | ++pstate->list_offset; | |
b7f3516f | 1322 | scm_putc (' ', port); |
c62fbfe1 MD |
1323 | /* CHECK_INTS; */ |
1324 | scm_iprin1 (SCM_CAR (exp), port, pstate); | |
1325 | } | |
1326 | } | |
c96d76b8 | 1327 | if (!SCM_NULL_OR_NIL_P (exp)) |
c62fbfe1 | 1328 | { |
b7f3516f | 1329 | scm_puts (" . ", port); |
c62fbfe1 MD |
1330 | scm_iprin1 (exp, port, pstate); |
1331 | } | |
1332 | skip_tail: | |
1333 | pstate->list_offset -= pstate->top - floor - 2; | |
a51ea417 | 1334 | goto end; |
a51ea417 | 1335 | |
c62fbfe1 MD |
1336 | fancy_circref: |
1337 | pstate->list_offset -= pstate->top - floor - 2; | |
1338 | ||
1339 | circref: | |
b7f3516f | 1340 | scm_puts (" . ", port); |
c62fbfe1 MD |
1341 | print_circref (port, pstate, exp); |
1342 | goto end; | |
0f2d19dd JB |
1343 | } |
1344 | ||
1345 | \f | |
1346 | ||
bb35f315 MV |
1347 | int |
1348 | scm_valid_oport_value_p (SCM val) | |
1349 | { | |
368cf54d GB |
1350 | return (SCM_OPOUTPORTP (val) |
1351 | || (SCM_PORT_WITH_PS_P (val) | |
1352 | && SCM_OPOUTPORTP (SCM_PORT_WITH_PS_PORT (val)))); | |
bb35f315 MV |
1353 | } |
1354 | ||
8b840115 | 1355 | /* SCM_GPROC(s_write, "write", 1, 1, 0, scm_write, g_write); */ |
1cc91f1b | 1356 | |
0f2d19dd | 1357 | SCM |
1bbd0b84 | 1358 | scm_write (SCM obj, SCM port) |
0f2d19dd JB |
1359 | { |
1360 | if (SCM_UNBNDP (port)) | |
9de87eea | 1361 | port = scm_current_output_port (); |
3eb7e6ee JB |
1362 | |
1363 | SCM_ASSERT (scm_valid_oport_value_p (port), port, SCM_ARG2, s_write); | |
bb35f315 | 1364 | |
a51ea417 | 1365 | scm_prin1 (obj, port, 1); |
0f2d19dd JB |
1366 | return SCM_UNSPECIFIED; |
1367 | } | |
1368 | ||
1369 | ||
8b840115 | 1370 | /* SCM_GPROC(s_display, "display", 1, 1, 0, scm_display, g_display); */ |
1cc91f1b | 1371 | |
0f2d19dd | 1372 | SCM |
1bbd0b84 | 1373 | scm_display (SCM obj, SCM port) |
0f2d19dd JB |
1374 | { |
1375 | if (SCM_UNBNDP (port)) | |
9de87eea | 1376 | port = scm_current_output_port (); |
3eb7e6ee JB |
1377 | |
1378 | SCM_ASSERT (scm_valid_oport_value_p (port), port, SCM_ARG2, s_display); | |
bb35f315 | 1379 | |
a51ea417 | 1380 | scm_prin1 (obj, port, 0); |
0f2d19dd JB |
1381 | return SCM_UNSPECIFIED; |
1382 | } | |
1383 | ||
70d63753 GB |
1384 | |
1385 | SCM_DEFINE (scm_simple_format, "simple-format", 2, 0, 1, | |
1386 | (SCM destination, SCM message, SCM args), | |
eca65e90 MG |
1387 | "Write @var{message} to @var{destination}, defaulting to\n" |
1388 | "the current output port.\n" | |
1389 | "@var{message} can contain @code{~A} (was @code{%s}) and\n" | |
1390 | "@code{~S} (was @code{%S}) escapes. When printed,\n" | |
1391 | "the escapes are replaced with corresponding members of\n" | |
b7e64f8b | 1392 | "@var{args}:\n" |
eca65e90 MG |
1393 | "@code{~A} formats using @code{display} and @code{~S} formats\n" |
1394 | "using @code{write}.\n" | |
1395 | "If @var{destination} is @code{#t}, then use the current output\n" | |
1396 | "port, if @var{destination} is @code{#f}, then return a string\n" | |
1397 | "containing the formatted text. Does not add a trailing newline.") | |
70d63753 GB |
1398 | #define FUNC_NAME s_scm_simple_format |
1399 | { | |
dfd03fb9 | 1400 | SCM port, answer = SCM_UNSPECIFIED; |
70d63753 GB |
1401 | int fReturnString = 0; |
1402 | int writingp; | |
889975e5 | 1403 | size_t start, p, end; |
70d63753 | 1404 | |
bc36d050 | 1405 | if (scm_is_eq (destination, SCM_BOOL_T)) |
daba1a71 | 1406 | { |
9de87eea | 1407 | destination = port = scm_current_output_port (); |
daba1a71 | 1408 | } |
7888309b | 1409 | else if (scm_is_false (destination)) |
daba1a71 MD |
1410 | { |
1411 | fReturnString = 1; | |
0b2c2ba3 | 1412 | port = scm_mkstrport (SCM_INUM0, SCM_BOOL_F, |
dfd03fb9 MD |
1413 | SCM_OPN | SCM_WRTNG, |
1414 | FUNC_NAME); | |
1415 | destination = port; | |
daba1a71 MD |
1416 | } |
1417 | else | |
1418 | { | |
1419 | SCM_VALIDATE_OPORT_VALUE (1, destination); | |
dfd03fb9 | 1420 | port = SCM_COERCE_OUTPORT (destination); |
daba1a71 MD |
1421 | } |
1422 | SCM_VALIDATE_STRING (2, message); | |
af45e3b0 | 1423 | SCM_VALIDATE_REST_ARGUMENT (args); |
70d63753 | 1424 | |
889975e5 MG |
1425 | p = 0; |
1426 | start = 0; | |
1427 | end = scm_i_string_length (message); | |
b24b5e13 | 1428 | for (p = start; p != end; ++p) |
889975e5 | 1429 | if (scm_i_string_ref (message, p) == '~') |
70d63753 | 1430 | { |
b24b5e13 | 1431 | if (++p == end) |
6662998f MV |
1432 | break; |
1433 | ||
889975e5 | 1434 | switch (scm_i_string_ref (message, p)) |
6662998f MV |
1435 | { |
1436 | case 'A': case 'a': | |
1437 | writingp = 0; | |
1438 | break; | |
1439 | case 'S': case 's': | |
1440 | writingp = 1; | |
1441 | break; | |
1442 | case '~': | |
889975e5 | 1443 | scm_lfwrite_substr (message, start, p, port); |
6662998f MV |
1444 | start = p + 1; |
1445 | continue; | |
1446 | case '%': | |
889975e5 | 1447 | scm_lfwrite_substr (message, start, p - 1, port); |
dfd03fb9 | 1448 | scm_newline (port); |
6662998f MV |
1449 | start = p + 1; |
1450 | continue; | |
1451 | default: | |
1afff620 | 1452 | SCM_MISC_ERROR ("FORMAT: Unsupported format option ~~~A - use (ice-9 format) instead", |
889975e5 | 1453 | scm_list_1 (SCM_MAKE_CHAR (scm_i_string_ref (message, p)))); |
6662998f MV |
1454 | |
1455 | } | |
70d63753 | 1456 | |
6662998f | 1457 | |
d2e53ed6 | 1458 | if (!scm_is_pair (args)) |
1afff620 | 1459 | SCM_MISC_ERROR ("FORMAT: Missing argument for ~~~A", |
889975e5 | 1460 | scm_list_1 (SCM_MAKE_CHAR (scm_i_string_ref (message, p)))); |
6662998f | 1461 | |
889975e5 | 1462 | scm_lfwrite_substr (message, start, p - 1, port); |
dfd03fb9 | 1463 | /* we pass destination here */ |
70d63753 GB |
1464 | scm_prin1 (SCM_CAR (args), destination, writingp); |
1465 | args = SCM_CDR (args); | |
1466 | start = p + 1; | |
1467 | } | |
6662998f | 1468 | |
889975e5 | 1469 | scm_lfwrite_substr (message, start, p, port); |
bc36d050 | 1470 | if (!scm_is_eq (args, SCM_EOL)) |
1afff620 KN |
1471 | SCM_MISC_ERROR ("FORMAT: ~A superfluous arguments", |
1472 | scm_list_1 (scm_length (args))); | |
70d63753 GB |
1473 | |
1474 | if (fReturnString) | |
1475 | answer = scm_strport_to_string (destination); | |
1476 | ||
daba1a71 | 1477 | return scm_return_first (answer, message); |
70d63753 GB |
1478 | } |
1479 | #undef FUNC_NAME | |
1480 | ||
1481 | ||
3b3b36dd | 1482 | SCM_DEFINE (scm_newline, "newline", 0, 1, 0, |
b450f070 | 1483 | (SCM port), |
8f85c0c6 NJ |
1484 | "Send a newline to @var{port}.\n" |
1485 | "If @var{port} is omitted, send to the current output port.") | |
1bbd0b84 | 1486 | #define FUNC_NAME s_scm_newline |
0f2d19dd JB |
1487 | { |
1488 | if (SCM_UNBNDP (port)) | |
9de87eea | 1489 | port = scm_current_output_port (); |
3eb7e6ee | 1490 | |
34d19ef6 | 1491 | SCM_VALIDATE_OPORT_VALUE (1, port); |
bb35f315 | 1492 | |
0ef4ae82 | 1493 | scm_putc ('\n', SCM_COERCE_OUTPORT (port)); |
0f2d19dd JB |
1494 | return SCM_UNSPECIFIED; |
1495 | } | |
1bbd0b84 | 1496 | #undef FUNC_NAME |
0f2d19dd | 1497 | |
3b3b36dd | 1498 | SCM_DEFINE (scm_write_char, "write-char", 1, 1, 0, |
b450f070 | 1499 | (SCM chr, SCM port), |
eca65e90 | 1500 | "Send character @var{chr} to @var{port}.") |
1bbd0b84 | 1501 | #define FUNC_NAME s_scm_write_char |
0f2d19dd JB |
1502 | { |
1503 | if (SCM_UNBNDP (port)) | |
9de87eea | 1504 | port = scm_current_output_port (); |
3eb7e6ee | 1505 | |
34d19ef6 HWN |
1506 | SCM_VALIDATE_CHAR (1, chr); |
1507 | SCM_VALIDATE_OPORT_VALUE (2, port); | |
07f49ac7 LC |
1508 | |
1509 | port = SCM_COERCE_OUTPORT (port); | |
1510 | if (!display_character (SCM_CHAR (chr), port, | |
478848cb | 1511 | PORT_CONVERSION_HANDLER (port))) |
07f49ac7 LC |
1512 | scm_encoding_error (__func__, errno, |
1513 | "cannot convert to output locale", | |
6851d3be | 1514 | port, chr); |
07f49ac7 | 1515 | |
0f2d19dd JB |
1516 | return SCM_UNSPECIFIED; |
1517 | } | |
1bbd0b84 | 1518 | #undef FUNC_NAME |
0f2d19dd | 1519 | |
0f2d19dd JB |
1520 | \f |
1521 | ||
bb35f315 | 1522 | /* Call back to Scheme code to do the printing of special objects |
c19bc088 MD |
1523 | * (like structs). SCM_PRINTER_APPLY applies PROC to EXP and a smob |
1524 | * containing PORT and PSTATE. This object can be used as the port for | |
1525 | * display/write etc to continue the current print chain. The REVEALED | |
1526 | * field of PSTATE is set to true to indicate that the print state has | |
1527 | * escaped to Scheme and thus has to be freed by the GC. | |
1528 | */ | |
1529 | ||
92c2555f | 1530 | scm_t_bits scm_tc16_port_with_ps; |
c19bc088 MD |
1531 | |
1532 | /* Print exactly as the port itself would */ | |
1533 | ||
1534 | static int | |
e841c3e0 | 1535 | port_with_ps_print (SCM obj, SCM port, scm_print_state *pstate) |
c19bc088 MD |
1536 | { |
1537 | obj = SCM_PORT_WITH_PS_PORT (obj); | |
1538 | return scm_ptobs[SCM_PTOBNUM (obj)].print (obj, port, pstate); | |
1539 | } | |
c4f37e80 MV |
1540 | |
1541 | SCM | |
1bbd0b84 | 1542 | scm_printer_apply (SCM proc, SCM exp, SCM port, scm_print_state *pstate) |
c4f37e80 | 1543 | { |
bb35f315 | 1544 | pstate->revealed = 1; |
dfd03fb9 MD |
1545 | return scm_call_2 (proc, exp, |
1546 | scm_i_port_with_print_state (port, pstate->handle)); | |
c19bc088 MD |
1547 | } |
1548 | ||
dfd03fb9 | 1549 | SCM_DEFINE (scm_port_with_print_state, "port-with-print-state", 1, 1, 0, |
1bbd0b84 | 1550 | (SCM port, SCM pstate), |
71331188 | 1551 | "Create a new port which behaves like @var{port}, but with an\n" |
dfd03fb9 MD |
1552 | "included print state @var{pstate}. @var{pstate} is optional.\n" |
1553 | "If @var{pstate} isn't supplied and @var{port} already has\n" | |
1554 | "a print state, the old print state is reused.") | |
1bbd0b84 | 1555 | #define FUNC_NAME s_scm_port_with_print_state |
c19bc088 | 1556 | { |
34d19ef6 | 1557 | SCM_VALIDATE_OPORT_VALUE (1, port); |
dfd03fb9 MD |
1558 | if (!SCM_UNBNDP (pstate)) |
1559 | SCM_VALIDATE_PRINTSTATE (2, pstate); | |
1560 | return scm_i_port_with_print_state (port, pstate); | |
c19bc088 | 1561 | } |
1bbd0b84 | 1562 | #undef FUNC_NAME |
c19bc088 | 1563 | |
a1ec6916 | 1564 | SCM_DEFINE (scm_get_print_state, "get-print-state", 1, 0, 0, |
1bbd0b84 | 1565 | (SCM port), |
71331188 MG |
1566 | "Return the print state of the port @var{port}. If @var{port}\n" |
1567 | "has no associated print state, @code{#f} is returned.") | |
1bbd0b84 | 1568 | #define FUNC_NAME s_scm_get_print_state |
c19bc088 | 1569 | { |
368cf54d GB |
1570 | if (SCM_PORT_WITH_PS_P (port)) |
1571 | return SCM_PORT_WITH_PS_PS (port); | |
f5f2dcff | 1572 | if (SCM_OUTPUT_PORT_P (port)) |
368cf54d | 1573 | return SCM_BOOL_F; |
276dd677 | 1574 | SCM_WRONG_TYPE_ARG (1, port); |
c4f37e80 | 1575 | } |
1bbd0b84 | 1576 | #undef FUNC_NAME |
bb35f315 | 1577 | |
c4f37e80 | 1578 | \f |
1cc91f1b | 1579 | |
0f2d19dd JB |
1580 | void |
1581 | scm_init_print () | |
0f2d19dd | 1582 | { |
66b1dbf6 | 1583 | SCM type; |
d5cf5324 | 1584 | |
d5cf5324 DH |
1585 | scm_gc_register_root (&print_state_pool); |
1586 | scm_gc_register_root (&scm_print_state_vtable); | |
66b1dbf6 AW |
1587 | type = scm_make_vtable (scm_from_locale_string (SCM_PRINT_STATE_LAYOUT), |
1588 | SCM_BOOL_F); | |
4a655e50 | 1589 | scm_set_struct_vtable_name_x (type, scm_from_latin1_symbol ("print-state")); |
bb35f315 | 1590 | scm_print_state_vtable = type; |
c4f37e80 | 1591 | |
c19bc088 MD |
1592 | /* Don't want to bind a wrapper class in GOOPS, so pass 0 as arg1. */ |
1593 | scm_tc16_port_with_ps = scm_make_smob_type (0, 0); | |
e841c3e0 | 1594 | scm_set_smob_print (scm_tc16_port_with_ps, port_with_ps_print); |
81ae25da | 1595 | |
a0599745 | 1596 | #include "libguile/print.x" |
475fa9a5 | 1597 | |
8500b186 AW |
1598 | scm_init_opts (scm_print_options, scm_print_opts); |
1599 | scm_print_opts[SCM_PRINT_HIGHLIGHT_PREFIX_I].val = | |
1600 | SCM_UNPACK (scm_from_locale_string ("{")); | |
1601 | scm_print_opts[SCM_PRINT_HIGHLIGHT_SUFFIX_I].val = | |
1602 | SCM_UNPACK (scm_from_locale_string ("}")); | |
475fa9a5 | 1603 | scm_print_opts[SCM_PRINT_KEYWORD_STYLE_I].val = SCM_UNPACK (sym_reader); |
0f2d19dd | 1604 | } |
89e00824 ML |
1605 | |
1606 | /* | |
1607 | Local Variables: | |
1608 | c-file-style: "gnu" | |
1609 | End: | |
1610 | */ |