Commit | Line | Data |
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f4bc4e59 | 1 | /* Copyright (C) 1995-1999, 2000, 2001, 2002, 2003, 2004, 2006, 2008, |
6e504a7b | 2 | * 2009, 2010, 2011, 2012, 2013, 2014 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'." }, | |
6e504a7b MW |
118 | { SCM_OPTION_BOOLEAN, "r7rs-symbols", 0, |
119 | "Escape symbols using R7RS |...| symbol notation." }, | |
62560650 | 120 | { 0 }, |
e6e4c9af MD |
121 | }; |
122 | ||
a1ec6916 | 123 | SCM_DEFINE (scm_print_options, "print-options-interface", 0, 1, 0, |
1bbd0b84 | 124 | (SCM setting), |
71331188 | 125 | "Option interface for the print options. Instead of using\n" |
1dd05fd8 MG |
126 | "this procedure directly, use the procedures\n" |
127 | "@code{print-enable}, @code{print-disable}, @code{print-set!}\n" | |
128 | "and @code{print-options}.") | |
1bbd0b84 | 129 | #define FUNC_NAME s_scm_print_options |
e6e4c9af | 130 | { |
a51ea417 | 131 | SCM ans = scm_options (setting, |
b7ff98dd | 132 | scm_print_opts, |
1bbd0b84 | 133 | FUNC_NAME); |
e6e4c9af MD |
134 | return ans; |
135 | } | |
1bbd0b84 | 136 | #undef FUNC_NAME |
e6e4c9af | 137 | |
0f2d19dd JB |
138 | \f |
139 | /* {Printing of Scheme Objects} | |
140 | */ | |
141 | ||
a51ea417 | 142 | /* Detection of circular references. |
c62fbfe1 MD |
143 | * |
144 | * Due to other constraints in the implementation, this code has bad | |
5d46ebe3 MD |
145 | * time complexity (O (depth * N)), The printer code can be |
146 | * rewritten to be O(N). | |
a51ea417 | 147 | */ |
dbb5de29 NJ |
148 | #define PUSH_REF(pstate, obj) \ |
149 | do \ | |
150 | { \ | |
151 | PSTATE_STACK_SET (pstate, pstate->top, obj); \ | |
152 | pstate->top++; \ | |
153 | if (pstate->top == pstate->ceiling) \ | |
154 | grow_ref_stack (pstate); \ | |
1bbd0b84 | 155 | } while(0) |
a51ea417 | 156 | |
dbb5de29 NJ |
157 | #define ENTER_NESTED_DATA(pstate, obj, label) \ |
158 | do \ | |
159 | { \ | |
160 | register unsigned long i; \ | |
161 | for (i = 0; i < pstate->top; ++i) \ | |
162 | if (scm_is_eq (PSTATE_STACK_REF (pstate, i), (obj))) \ | |
163 | goto label; \ | |
164 | if (pstate->fancyp) \ | |
165 | { \ | |
166 | if (pstate->top - pstate->list_offset >= pstate->level) \ | |
167 | { \ | |
168 | scm_putc ('#', port); \ | |
169 | return; \ | |
170 | } \ | |
171 | } \ | |
172 | PUSH_REF(pstate, obj); \ | |
1bbd0b84 | 173 | } while(0) |
a51ea417 | 174 | |
dbb5de29 NJ |
175 | #define EXIT_NESTED_DATA(pstate) \ |
176 | do \ | |
177 | { \ | |
178 | --pstate->top; \ | |
179 | PSTATE_STACK_SET (pstate, pstate->top, SCM_UNDEFINED); \ | |
180 | } \ | |
181 | while (0) | |
c62fbfe1 | 182 | |
d5cf5324 DH |
183 | SCM scm_print_state_vtable = SCM_BOOL_F; |
184 | static SCM print_state_pool = SCM_EOL; | |
9de87eea | 185 | scm_i_pthread_mutex_t print_state_mutex = SCM_I_PTHREAD_MUTEX_INITIALIZER; |
c4f37e80 | 186 | |
f843a84c | 187 | #ifdef GUILE_DEBUG /* Used for debugging purposes */ |
1cc91f1b | 188 | |
3b3b36dd | 189 | SCM_DEFINE (scm_current_pstate, "current-pstate", 0, 0, 0, |
1bbd0b84 | 190 | (), |
d5cf5324 | 191 | "Return the current-pstate -- the car of the\n" |
5352393c MG |
192 | "@code{print_state_pool}. @code{current-pstate} is only\n" |
193 | "included in @code{--enable-guile-debug} builds.") | |
1bbd0b84 | 194 | #define FUNC_NAME s_scm_current_pstate |
c62fbfe1 | 195 | { |
d2e53ed6 | 196 | if (!scm_is_null (print_state_pool)) |
d5cf5324 | 197 | return SCM_CAR (print_state_pool); |
a0adfbf0 | 198 | else |
0a284a4e | 199 | return SCM_BOOL_F; |
c62fbfe1 | 200 | } |
1bbd0b84 GB |
201 | #undef FUNC_NAME |
202 | ||
c62fbfe1 MD |
203 | #endif |
204 | ||
205 | #define PSTATE_SIZE 50L | |
206 | ||
698c0295 | 207 | static SCM |
1bbd0b84 | 208 | make_print_state (void) |
698c0295 | 209 | { |
d5cf5324 DH |
210 | SCM print_state |
211 | = scm_make_struct (scm_print_state_vtable, SCM_INUM0, SCM_EOL); | |
bf685b6d | 212 | scm_print_state *pstate = SCM_PRINT_STATE (print_state); |
00ffa0e7 | 213 | pstate->ref_vect = scm_c_make_vector (PSTATE_SIZE, SCM_UNDEFINED); |
4057a3e0 | 214 | pstate->ceiling = SCM_SIMPLE_VECTOR_LENGTH (pstate->ref_vect); |
d232520a | 215 | pstate->highlight_objects = SCM_EOL; |
698c0295 MD |
216 | return print_state; |
217 | } | |
1cc91f1b | 218 | |
c62fbfe1 MD |
219 | SCM |
220 | scm_make_print_state () | |
c62fbfe1 | 221 | { |
230d095f | 222 | SCM answer = SCM_BOOL_F; |
698c0295 MD |
223 | |
224 | /* First try to allocate a print state from the pool */ | |
9de87eea | 225 | scm_i_pthread_mutex_lock (&print_state_mutex); |
d2e53ed6 | 226 | if (!scm_is_null (print_state_pool)) |
698c0295 | 227 | { |
d5cf5324 DH |
228 | answer = SCM_CAR (print_state_pool); |
229 | print_state_pool = SCM_CDR (print_state_pool); | |
698c0295 | 230 | } |
9de87eea | 231 | scm_i_pthread_mutex_unlock (&print_state_mutex); |
698c0295 | 232 | |
7888309b | 233 | return scm_is_false (answer) ? make_print_state () : answer; |
c62fbfe1 | 234 | } |
a51ea417 | 235 | |
698c0295 | 236 | void |
6e8d25a6 | 237 | scm_free_print_state (SCM print_state) |
698c0295 MD |
238 | { |
239 | SCM handle; | |
240 | scm_print_state *pstate = SCM_PRINT_STATE (print_state); | |
241 | /* Cleanup before returning print state to pool. | |
242 | * It is better to do it here. Doing it in scm_prin1 | |
243 | * would cost more since that function is called much more | |
244 | * often. | |
245 | */ | |
246 | pstate->fancyp = 0; | |
bb35f315 | 247 | pstate->revealed = 0; |
d232520a | 248 | pstate->highlight_objects = SCM_EOL; |
9de87eea | 249 | scm_i_pthread_mutex_lock (&print_state_mutex); |
16d4699b | 250 | handle = scm_cons (print_state, print_state_pool); |
d5cf5324 | 251 | print_state_pool = handle; |
9de87eea | 252 | scm_i_pthread_mutex_unlock (&print_state_mutex); |
dfd03fb9 MD |
253 | } |
254 | ||
255 | SCM | |
256 | scm_i_port_with_print_state (SCM port, SCM print_state) | |
257 | { | |
258 | if (SCM_UNBNDP (print_state)) | |
259 | { | |
260 | if (SCM_PORT_WITH_PS_P (port)) | |
261 | return port; | |
262 | else | |
263 | print_state = scm_make_print_state (); | |
264 | /* port does not need to be coerced since it doesn't have ps */ | |
265 | } | |
266 | else | |
267 | port = SCM_COERCE_OUTPORT (port); | |
268 | SCM_RETURN_NEWSMOB (scm_tc16_port_with_ps, | |
269 | SCM_UNPACK (scm_cons (port, print_state))); | |
698c0295 | 270 | } |
1cc91f1b | 271 | |
a51ea417 | 272 | static void |
1bbd0b84 | 273 | grow_ref_stack (scm_print_state *pstate) |
a51ea417 | 274 | { |
4057a3e0 MV |
275 | SCM old_vect = pstate->ref_vect; |
276 | size_t old_size = SCM_SIMPLE_VECTOR_LENGTH (old_vect); | |
277 | size_t new_size = 2 * pstate->ceiling; | |
00ffa0e7 | 278 | SCM new_vect = scm_c_make_vector (new_size, SCM_UNDEFINED); |
b17004b8 DH |
279 | unsigned long int i; |
280 | ||
281 | for (i = 0; i != old_size; ++i) | |
4057a3e0 | 282 | SCM_SIMPLE_VECTOR_SET (new_vect, i, SCM_SIMPLE_VECTOR_REF (old_vect, i)); |
b17004b8 DH |
283 | |
284 | pstate->ref_vect = new_vect; | |
bf685b6d | 285 | pstate->ceiling = new_size; |
a51ea417 MD |
286 | } |
287 | ||
509759dd MV |
288 | #define PSTATE_STACK_REF(p,i) SCM_SIMPLE_VECTOR_REF((p)->ref_vect, (i)) |
289 | #define PSTATE_STACK_SET(p,i,v) SCM_SIMPLE_VECTOR_SET((p)->ref_vect, (i), (v)) | |
1cc91f1b | 290 | |
a51ea417 | 291 | static void |
34d19ef6 | 292 | print_circref (SCM port, scm_print_state *pstate, SCM ref) |
a51ea417 | 293 | { |
c014a02e ML |
294 | register long i; |
295 | long self = pstate->top - 1; | |
c62fbfe1 | 296 | i = pstate->top - 1; |
509759dd | 297 | if (scm_is_pair (PSTATE_STACK_REF (pstate, i))) |
c62fbfe1 MD |
298 | { |
299 | while (i > 0) | |
300 | { | |
509759dd MV |
301 | if (!scm_is_pair (PSTATE_STACK_REF (pstate, i-1)) |
302 | || !scm_is_eq (SCM_CDR (PSTATE_STACK_REF (pstate, i-1)), | |
303 | SCM_CDR (PSTATE_STACK_REF (pstate, i)))) | |
c62fbfe1 MD |
304 | break; |
305 | --i; | |
306 | } | |
307 | self = i; | |
308 | } | |
309 | for (i = pstate->top - 1; 1; --i) | |
509759dd | 310 | if (scm_is_eq (PSTATE_STACK_REF(pstate, i), ref)) |
c62fbfe1 | 311 | break; |
b7f3516f | 312 | scm_putc ('#', port); |
c62fbfe1 | 313 | scm_intprint (i - self, 10, port); |
b7f3516f | 314 | scm_putc ('#', port); |
a51ea417 MD |
315 | } |
316 | ||
6662998f MV |
317 | /* Print the name of a symbol. */ |
318 | ||
475fa9a5 | 319 | static int |
15671c6e | 320 | quote_keywordish_symbols (void) |
475fa9a5 | 321 | { |
15671c6e | 322 | SCM option = SCM_PRINT_KEYWORD_STYLE; |
475fa9a5 | 323 | |
475fa9a5 MV |
324 | if (scm_is_false (option)) |
325 | return 0; | |
326 | if (scm_is_eq (option, sym_reader)) | |
327 | return scm_is_true (SCM_PACK (SCM_KEYWORD_STYLE)); | |
328 | return 1; | |
329 | } | |
330 | ||
2e9fc9fc AW |
331 | #define INITIAL_IDENTIFIER_MASK \ |
332 | (UC_CATEGORY_MASK_Lu | UC_CATEGORY_MASK_Ll | UC_CATEGORY_MASK_Lt \ | |
333 | | UC_CATEGORY_MASK_Lm | UC_CATEGORY_MASK_Lo | UC_CATEGORY_MASK_Mn \ | |
334 | | UC_CATEGORY_MASK_Nl | UC_CATEGORY_MASK_No | UC_CATEGORY_MASK_Pd \ | |
335 | | UC_CATEGORY_MASK_Pc | UC_CATEGORY_MASK_Po | UC_CATEGORY_MASK_Sc \ | |
336 | | UC_CATEGORY_MASK_Sm | UC_CATEGORY_MASK_Sk | UC_CATEGORY_MASK_So \ | |
337 | | UC_CATEGORY_MASK_Co) | |
338 | ||
339 | #define SUBSEQUENT_IDENTIFIER_MASK \ | |
340 | (INITIAL_IDENTIFIER_MASK \ | |
341 | | UC_CATEGORY_MASK_Nd | UC_CATEGORY_MASK_Mc | UC_CATEGORY_MASK_Me) | |
342 | ||
15671c6e AW |
343 | static int |
344 | symbol_has_extended_read_syntax (SCM sym) | |
6662998f | 345 | { |
15671c6e AW |
346 | size_t pos, len = scm_i_symbol_length (sym); |
347 | scm_t_wchar c; | |
348 | ||
349 | /* The empty symbol. */ | |
350 | if (len == 0) | |
351 | return 1; | |
352 | ||
353 | c = scm_i_symbol_ref (sym, 0); | |
354 | ||
355 | /* Single dot; conflicts with dotted-pair notation. */ | |
356 | if (len == 1 && c == '.') | |
357 | return 1; | |
358 | ||
359 | /* Other initial-character constraints. */ | |
2e9fc9fc | 360 | if (c == '\'' || c == '`' || c == ',' || c == '"' || c == ';' || c == '#') |
15671c6e | 361 | return 1; |
6e504a7b MW |
362 | |
363 | /* R7RS allows neither '|' nor '\' in bare symbols. */ | |
364 | if ((c == '|' || c == '\\') && SCM_PRINT_R7RS_SYMBOLS_P) | |
365 | return 1; | |
15671c6e AW |
366 | |
367 | /* Keywords can be identified by trailing colons too. */ | |
368 | if (c == ':' || scm_i_symbol_ref (sym, len - 1) == ':') | |
369 | return quote_keywordish_symbols (); | |
370 | ||
371 | /* Number-ish symbols. */ | |
372 | if (scm_is_true (scm_i_string_to_number (scm_symbol_to_string (sym), 10))) | |
373 | return 1; | |
374 | ||
2e9fc9fc AW |
375 | /* Other disallowed first characters. */ |
376 | if (!uc_is_general_category_withtable (c, INITIAL_IDENTIFIER_MASK)) | |
377 | return 1; | |
378 | ||
379 | /* Otherwise, any character that's in the identifier category mask is | |
380 | fine to pass through as-is, provided it's not one of the ASCII | |
381 | delimiters like `;'. */ | |
382 | for (pos = 1; pos < len; pos++) | |
6662998f | 383 | { |
2e9fc9fc AW |
384 | c = scm_i_symbol_ref (sym, pos); |
385 | if (!uc_is_general_category_withtable (c, SUBSEQUENT_IDENTIFIER_MASK)) | |
386 | return 1; | |
387 | else if (c == '"' || c == ';' || c == '#') | |
388 | return 1; | |
6e504a7b MW |
389 | else if ((c == '|' || c == '\\') && SCM_PRINT_R7RS_SYMBOLS_P) |
390 | /* R7RS allows neither '|' nor '\' in bare symbols. */ | |
391 | return 1; | |
6662998f | 392 | } |
c6b49e89 | 393 | |
15671c6e AW |
394 | return 0; |
395 | } | |
396 | ||
397 | static void | |
398 | print_normal_symbol (SCM sym, SCM port) | |
399 | { | |
400 | scm_display (scm_symbol_to_string (sym), port); | |
401 | } | |
402 | ||
15671c6e AW |
403 | static void |
404 | print_extended_symbol (SCM sym, SCM port) | |
405 | { | |
406 | size_t pos, len; | |
407 | scm_t_string_failed_conversion_handler strategy; | |
408 | ||
409 | len = scm_i_symbol_length (sym); | |
478848cb | 410 | strategy = PORT_CONVERSION_HANDLER (port); |
15671c6e AW |
411 | |
412 | scm_lfwrite ("#{", 2, port); | |
413 | ||
414 | for (pos = 0; pos < len; pos++) | |
415 | { | |
416 | scm_t_wchar c = scm_i_symbol_ref (sym, pos); | |
417 | ||
2e9fc9fc AW |
418 | if (uc_is_general_category_withtable (c, |
419 | SUBSEQUENT_IDENTIFIER_MASK | |
420 | | UC_CATEGORY_MASK_Zs)) | |
15671c6e | 421 | { |
b4a09988 DK |
422 | if (!display_character (c, port, strategy) |
423 | || (c == '\\' && !display_character (c, port, strategy))) | |
15671c6e AW |
424 | scm_encoding_error ("print_extended_symbol", errno, |
425 | "cannot convert to output locale", | |
426 | port, SCM_MAKE_CHAR (c)); | |
2e9fc9fc AW |
427 | } |
428 | else | |
429 | { | |
6e504a7b | 430 | scm_lfwrite ("\\x", 2, port); |
2e9fc9fc | 431 | scm_intprint (c, 16, port); |
6e504a7b | 432 | scm_putc (';', port); |
15671c6e AW |
433 | } |
434 | } | |
435 | ||
436 | scm_lfwrite ("}#", 2, port); | |
437 | } | |
438 | ||
6e504a7b MW |
439 | static void |
440 | print_r7rs_extended_symbol (SCM sym, SCM port) | |
441 | { | |
442 | size_t pos, len; | |
443 | scm_t_string_failed_conversion_handler strategy; | |
444 | ||
445 | len = scm_i_symbol_length (sym); | |
446 | strategy = PORT_CONVERSION_HANDLER (port); | |
447 | ||
448 | scm_putc ('|', port); | |
449 | ||
450 | for (pos = 0; pos < len; pos++) | |
451 | { | |
452 | scm_t_wchar c = scm_i_symbol_ref (sym, pos); | |
453 | ||
454 | switch (c) | |
455 | { | |
456 | case '\a': scm_lfwrite ("\\a", 2, port); break; | |
457 | case '\b': scm_lfwrite ("\\b", 2, port); break; | |
458 | case '\t': scm_lfwrite ("\\t", 2, port); break; | |
459 | case '\n': scm_lfwrite ("\\n", 2, port); break; | |
460 | case '\r': scm_lfwrite ("\\r", 2, port); break; | |
461 | case '|': scm_lfwrite ("\\|", 2, port); break; | |
462 | case '\\': scm_lfwrite ("\\x5c;", 5, port); break; | |
463 | default: | |
464 | if (uc_is_general_category_withtable (c, | |
1fc651e3 MW |
465 | UC_CATEGORY_MASK_L |
466 | | UC_CATEGORY_MASK_M | |
467 | | UC_CATEGORY_MASK_N | |
468 | | UC_CATEGORY_MASK_P | |
469 | | UC_CATEGORY_MASK_S) | |
470 | || (c == ' ')) | |
6e504a7b MW |
471 | { |
472 | if (!display_character (c, port, strategy)) | |
473 | scm_encoding_error ("print_r7rs_extended_symbol", errno, | |
474 | "cannot convert to output locale", | |
475 | port, SCM_MAKE_CHAR (c)); | |
476 | } | |
477 | else | |
478 | { | |
479 | scm_lfwrite ("\\x", 2, port); | |
480 | scm_intprint (c, 16, port); | |
481 | scm_putc (';', port); | |
482 | } | |
483 | break; | |
484 | } | |
485 | } | |
486 | ||
487 | scm_putc ('|', port); | |
488 | } | |
489 | ||
490 | /* FIXME: allow R6RS hex escapes instead of #{...}# or |...|. */ | |
15671c6e AW |
491 | void |
492 | scm_i_print_symbol_name (SCM sym, SCM port) | |
493 | { | |
6e504a7b | 494 | if (!symbol_has_extended_read_syntax (sym)) |
15671c6e | 495 | print_normal_symbol (sym, port); |
6e504a7b MW |
496 | else if (SCM_PRINT_R7RS_SYMBOLS_P) |
497 | print_r7rs_extended_symbol (sym, port); | |
498 | else | |
499 | print_extended_symbol (sym, port); | |
6662998f MV |
500 | } |
501 | ||
e23106d5 MG |
502 | void |
503 | scm_print_symbol_name (const char *str, size_t len, SCM port) | |
504 | { | |
505 | SCM symbol = scm_from_locale_symboln (str, len); | |
ab33782c | 506 | scm_i_print_symbol_name (symbol, port); |
e23106d5 MG |
507 | } |
508 | ||
c62fbfe1 | 509 | /* Print generally. Handles both write and display according to PSTATE. |
0f2d19dd | 510 | */ |
8b840115 MD |
511 | SCM_GPROC(s_write, "write", 1, 1, 0, scm_write, g_write); |
512 | SCM_GPROC(s_display, "display", 1, 1, 0, scm_display, g_display); | |
1cc91f1b | 513 | |
d232520a MV |
514 | static void iprin1 (SCM exp, SCM port, scm_print_state *pstate); |
515 | ||
dea901d6 MG |
516 | |
517 | /* Print a character as an octal or hex escape. */ | |
518 | #define PRINT_CHAR_ESCAPE(i, port) \ | |
519 | do \ | |
520 | { \ | |
521 | if (!SCM_R6RS_ESCAPES_P) \ | |
522 | scm_intprint (i, 8, port); \ | |
523 | else \ | |
524 | { \ | |
525 | scm_puts ("x", port); \ | |
526 | scm_intprint (i, 16, port); \ | |
527 | } \ | |
528 | } \ | |
529 | while (0) | |
530 | ||
531 | ||
0f2d19dd | 532 | void |
1bbd0b84 | 533 | scm_iprin1 (SCM exp, SCM port, scm_print_state *pstate) |
d232520a MV |
534 | { |
535 | if (pstate->fancyp | |
536 | && scm_is_true (scm_memq (exp, pstate->highlight_objects))) | |
537 | { | |
81ae25da | 538 | scm_display (SCM_PRINT_HIGHLIGHT_PREFIX, port); |
d232520a | 539 | iprin1 (exp, port, pstate); |
81ae25da | 540 | scm_display (SCM_PRINT_HIGHLIGHT_SUFFIX, port); |
d232520a MV |
541 | } |
542 | else | |
543 | iprin1 (exp, port, pstate); | |
544 | } | |
545 | ||
546 | static void | |
547 | iprin1 (SCM exp, SCM port, scm_print_state *pstate) | |
0f2d19dd | 548 | { |
54778cd3 | 549 | switch (SCM_ITAG3 (exp)) |
0f2d19dd | 550 | { |
e34f941a DH |
551 | case scm_tc3_tc7_1: |
552 | case scm_tc3_tc7_2: | |
553 | /* These tc3 tags should never occur in an immediate value. They are | |
554 | * only used in cell types of non-immediates, i. e. the value returned | |
555 | * by SCM_CELL_TYPE (exp) can use these tags. | |
556 | */ | |
557 | scm_ipruk ("immediate", exp, port); | |
558 | break; | |
559 | case scm_tc3_int_1: | |
560 | case scm_tc3_int_2: | |
e11e83f3 | 561 | scm_intprint (SCM_I_INUM (exp), 10, port); |
0f2d19dd | 562 | break; |
e34f941a | 563 | case scm_tc3_imm24: |
7866a09b | 564 | if (SCM_CHARP (exp)) |
0f2d19dd | 565 | { |
b7f3516f | 566 | if (SCM_WRITINGP (pstate)) |
07f49ac7 LC |
567 | write_character (SCM_CHAR (exp), port, 0); |
568 | else | |
b7f3516f | 569 | { |
07f49ac7 | 570 | if (!display_character (SCM_CHAR (exp), port, |
478848cb | 571 | PORT_CONVERSION_HANDLER (port))) |
07f49ac7 LC |
572 | scm_encoding_error (__func__, errno, |
573 | "cannot convert to output locale", | |
6851d3be | 574 | port, exp); |
b7f3516f | 575 | } |
0f2d19dd | 576 | } |
a51ea417 | 577 | else if (SCM_IFLAGP (exp) |
e17d318f DH |
578 | && ((size_t) SCM_IFLAGNUM (exp) < (sizeof iflagnames / sizeof (char *)))) |
579 | { | |
580 | scm_puts (iflagnames [SCM_IFLAGNUM (exp)], port); | |
581 | } | |
0f2d19dd | 582 | else |
e34f941a DH |
583 | { |
584 | /* unknown immediate value */ | |
585 | scm_ipruk ("immediate", exp, port); | |
586 | } | |
0f2d19dd | 587 | break; |
e34f941a | 588 | case scm_tc3_cons: |
0f2d19dd JB |
589 | switch (SCM_TYP7 (exp)) |
590 | { | |
904a077d MV |
591 | case scm_tcs_struct: |
592 | { | |
593 | ENTER_NESTED_DATA (pstate, exp, circref); | |
594 | if (SCM_OBJ_CLASS_FLAGS (exp) & SCM_CLASSF_GOOPS) | |
595 | { | |
596 | SCM pwps, print = pstate->writingp ? g_write : g_display; | |
b2b33168 | 597 | if (SCM_UNPACK (print) == 0) |
904a077d | 598 | goto print_struct; |
dfd03fb9 | 599 | pwps = scm_i_port_with_print_state (port, pstate->handle); |
7663c008 | 600 | pstate->revealed = 1; |
904a077d MV |
601 | scm_call_generic_2 (print, exp, pwps); |
602 | } | |
603 | else | |
604 | { | |
605 | print_struct: | |
606 | scm_print_struct (exp, port, pstate); | |
607 | } | |
608 | EXIT_NESTED_DATA (pstate); | |
609 | } | |
610 | break; | |
0f2d19dd JB |
611 | case scm_tcs_cons_imcar: |
612 | case scm_tcs_cons_nimcar: | |
c62fbfe1 MD |
613 | ENTER_NESTED_DATA (pstate, exp, circref); |
614 | scm_iprlist ("(", exp, ')', port, pstate); | |
615 | EXIT_NESTED_DATA (pstate); | |
a51ea417 MD |
616 | break; |
617 | circref: | |
c62fbfe1 | 618 | print_circref (port, pstate, exp); |
0f2d19dd | 619 | break; |
534c55a9 DH |
620 | case scm_tc7_number: |
621 | switch SCM_TYP16 (exp) { | |
622 | case scm_tc16_big: | |
623 | scm_bigprint (exp, port, pstate); | |
624 | break; | |
625 | case scm_tc16_real: | |
626 | scm_print_real (exp, port, pstate); | |
627 | break; | |
628 | case scm_tc16_complex: | |
629 | scm_print_complex (exp, port, pstate); | |
630 | break; | |
f92e85f7 MV |
631 | case scm_tc16_fraction: |
632 | scm_i_print_fraction (exp, port, pstate); | |
633 | break; | |
534c55a9 DH |
634 | } |
635 | break; | |
9c44cd45 MG |
636 | case scm_tc7_string: |
637 | if (SCM_WRITINGP (pstate)) | |
638 | { | |
07f49ac7 | 639 | size_t len, i; |
9c44cd45 | 640 | |
f4bc4e59 | 641 | display_character ('"', port, iconveh_question_mark); |
9c44cd45 MG |
642 | len = scm_i_string_length (exp); |
643 | for (i = 0; i < len; ++i) | |
07f49ac7 LC |
644 | write_character (scm_i_string_ref (exp, i), port, 1); |
645 | ||
f4bc4e59 | 646 | display_character ('"', port, iconveh_question_mark); |
9c44cd45 MG |
647 | scm_remember_upto_here_1 (exp); |
648 | } | |
649 | else | |
f4bc4e59 LC |
650 | { |
651 | size_t len, printed; | |
652 | ||
653 | len = scm_i_string_length (exp); | |
654 | printed = display_string (scm_i_string_data (exp), | |
655 | scm_i_is_narrow_string (exp), | |
656 | len, port, | |
478848cb | 657 | PORT_CONVERSION_HANDLER (port)); |
f4bc4e59 | 658 | if (SCM_UNLIKELY (printed < len)) |
f4bc4e59 LC |
659 | scm_encoding_error (__func__, errno, |
660 | "cannot convert to output locale", | |
6851d3be | 661 | port, scm_c_string_ref (exp, printed)); |
f4bc4e59 LC |
662 | } |
663 | ||
9c44cd45 MG |
664 | scm_remember_upto_here_1 (exp); |
665 | break; | |
28b06554 | 666 | case scm_tc7_symbol: |
cc95e00a | 667 | if (scm_i_symbol_is_interned (exp)) |
9ff28a13 | 668 | { |
e23106d5 | 669 | scm_i_print_symbol_name (exp, port); |
9ff28a13 MV |
670 | scm_remember_upto_here_1 (exp); |
671 | } | |
672 | else | |
673 | { | |
674 | scm_puts ("#<uninterned-symbol ", port); | |
e23106d5 | 675 | scm_i_print_symbol_name (exp, port); |
9ff28a13 | 676 | scm_putc (' ', port); |
0345e278 | 677 | scm_uintprint (SCM_UNPACK (exp), 16, port); |
9ff28a13 MV |
678 | scm_putc ('>', port); |
679 | } | |
6662998f | 680 | break; |
e5aca4b5 MV |
681 | case scm_tc7_variable: |
682 | scm_i_variable_print (exp, port, pstate); | |
683 | break; | |
2fb924f6 AW |
684 | case scm_tc7_program: |
685 | scm_i_program_print (exp, port, pstate); | |
686 | break; | |
5b46a8c2 LC |
687 | case scm_tc7_pointer: |
688 | scm_i_pointer_print (exp, port, pstate); | |
e2c2a699 | 689 | break; |
c99de5aa AW |
690 | case scm_tc7_hashtable: |
691 | scm_i_hashtable_print (exp, port, pstate); | |
692 | break; | |
9ea31741 AW |
693 | case scm_tc7_fluid: |
694 | scm_i_fluid_print (exp, port, pstate); | |
695 | break; | |
45cf2428 AW |
696 | case scm_tc7_dynamic_state: |
697 | scm_i_dynamic_state_print (exp, port, pstate); | |
698 | break; | |
6f3b0cc2 AW |
699 | case scm_tc7_frame: |
700 | scm_i_frame_print (exp, port, pstate); | |
701 | break; | |
702 | case scm_tc7_objcode: | |
703 | scm_i_objcode_print (exp, port, pstate); | |
704 | break; | |
705 | case scm_tc7_vm: | |
706 | scm_i_vm_print (exp, port, pstate); | |
707 | break; | |
708 | case scm_tc7_vm_cont: | |
709 | scm_i_vm_cont_print (exp, port, pstate); | |
710 | break; | |
bbb2ecd1 AW |
711 | case scm_tc7_prompt: |
712 | scm_i_prompt_print (exp, port, pstate); | |
713 | break; | |
714 | case scm_tc7_with_fluids: | |
715 | scm_i_with_fluids_print (exp, port, pstate); | |
716 | break; | |
b2637c98 AW |
717 | case scm_tc7_array: |
718 | ENTER_NESTED_DATA (pstate, exp, circref); | |
719 | scm_i_print_array (exp, port, pstate); | |
88c0a1d5 | 720 | EXIT_NESTED_DATA (pstate); |
b2637c98 AW |
721 | break; |
722 | case scm_tc7_bytevector: | |
723 | scm_i_print_bytevector (exp, port, pstate); | |
724 | break; | |
ff1feca9 AW |
725 | case scm_tc7_bitvector: |
726 | scm_i_print_bitvector (exp, port, pstate); | |
727 | break; | |
0f2d19dd | 728 | case scm_tc7_wvect: |
c62fbfe1 | 729 | ENTER_NESTED_DATA (pstate, exp, circref); |
0f2d19dd | 730 | if (SCM_IS_WHVEC (exp)) |
b7f3516f | 731 | scm_puts ("#wh(", port); |
0f2d19dd | 732 | else |
b7f3516f | 733 | scm_puts ("#w(", port); |
0f2d19dd | 734 | goto common_vector_printer; |
0f2d19dd | 735 | case scm_tc7_vector: |
c62fbfe1 | 736 | ENTER_NESTED_DATA (pstate, exp, circref); |
b7f3516f | 737 | scm_puts ("#(", port); |
0f2d19dd | 738 | common_vector_printer: |
9fbaf27c | 739 | { |
c014a02e | 740 | register long i; |
4057a3e0 | 741 | long last = SCM_SIMPLE_VECTOR_LENGTH (exp) - 1; |
9fbaf27c | 742 | int cutp = 0; |
4057a3e0 MV |
743 | if (pstate->fancyp |
744 | && SCM_SIMPLE_VECTOR_LENGTH (exp) > pstate->length) | |
9fbaf27c MD |
745 | { |
746 | last = pstate->length - 1; | |
747 | cutp = 1; | |
748 | } | |
c367c4b4 | 749 | if (SCM_I_WVECTP (exp)) |
9fbaf27c | 750 | { |
c367c4b4 LC |
751 | /* Elements of weak vectors may not be accessed via the |
752 | `SIMPLE_VECTOR_REF ()' macro. */ | |
753 | for (i = 0; i < last; ++i) | |
754 | { | |
755 | scm_iprin1 (scm_c_vector_ref (exp, i), | |
756 | port, pstate); | |
757 | scm_putc (' ', port); | |
758 | } | |
9fbaf27c | 759 | } |
c367c4b4 LC |
760 | else |
761 | { | |
762 | for (i = 0; i < last; ++i) | |
763 | { | |
764 | scm_iprin1 (SCM_SIMPLE_VECTOR_REF (exp, i), port, pstate); | |
765 | scm_putc (' ', port); | |
766 | } | |
767 | } | |
768 | ||
9fbaf27c MD |
769 | if (i == last) |
770 | { | |
771 | /* CHECK_INTS; */ | |
c367c4b4 | 772 | scm_iprin1 (scm_c_vector_ref (exp, i), port, pstate); |
9fbaf27c MD |
773 | } |
774 | if (cutp) | |
b7f3516f TT |
775 | scm_puts (" ...", port); |
776 | scm_putc (')', port); | |
9fbaf27c | 777 | } |
c62fbfe1 | 778 | EXIT_NESTED_DATA (pstate); |
0f2d19dd | 779 | break; |
0f2d19dd | 780 | case scm_tc7_port: |
5ca6dc39 JB |
781 | { |
782 | register long i = SCM_PTOBNUM (exp); | |
783 | if (i < scm_numptob | |
784 | && scm_ptobs[i].print | |
785 | && (scm_ptobs[i].print) (exp, port, pstate)) | |
a51ea417 | 786 | break; |
5ca6dc39 JB |
787 | goto punk; |
788 | } | |
789 | case scm_tc7_smob: | |
7a7f7c53 DH |
790 | ENTER_NESTED_DATA (pstate, exp, circref); |
791 | SCM_SMOB_DESCRIPTOR (exp).print (exp, port, pstate); | |
792 | EXIT_NESTED_DATA (pstate); | |
793 | break; | |
0f2d19dd | 794 | default: |
314b8716 | 795 | /* case scm_tcs_closures: */ |
a51ea417 MD |
796 | punk: |
797 | scm_ipruk ("type", exp, port); | |
0f2d19dd JB |
798 | } |
799 | } | |
800 | } | |
801 | ||
c62fbfe1 MD |
802 | /* Print states are necessary for circular reference safe printing. |
803 | * They are also expensive to allocate. Therefore print states are | |
804 | * kept in a pool so that they can be reused. | |
805 | */ | |
1cc91f1b | 806 | |
bb35f315 MV |
807 | /* The PORT argument can also be a print-state/port pair, which will |
808 | * then be used instead of allocating a new print state. This is | |
809 | * useful for continuing a chain of print calls from Scheme. */ | |
810 | ||
a51ea417 | 811 | void |
1bbd0b84 | 812 | scm_prin1 (SCM exp, SCM port, int writingp) |
a51ea417 | 813 | { |
c4f37e80 MV |
814 | SCM handle = SCM_BOOL_F; /* Will GC protect the handle whilst unlinked */ |
815 | SCM pstate_scm; | |
c62fbfe1 | 816 | scm_print_state *pstate; |
15635be5 | 817 | int old_writingp; |
c62fbfe1 | 818 | |
bb35f315 MV |
819 | /* If PORT is a print-state/port pair, use that. Else create a new |
820 | print-state. */ | |
c4f37e80 | 821 | |
0c95b57d | 822 | if (SCM_PORT_WITH_PS_P (port)) |
bb35f315 | 823 | { |
52235e71 MD |
824 | pstate_scm = SCM_PORT_WITH_PS_PS (port); |
825 | port = SCM_PORT_WITH_PS_PORT (port); | |
bb35f315 MV |
826 | } |
827 | else | |
c62fbfe1 | 828 | { |
c4f37e80 | 829 | /* First try to allocate a print state from the pool */ |
9de87eea | 830 | scm_i_pthread_mutex_lock (&print_state_mutex); |
d2e53ed6 | 831 | if (!scm_is_null (print_state_pool)) |
c4f37e80 | 832 | { |
d5cf5324 DH |
833 | handle = print_state_pool; |
834 | print_state_pool = SCM_CDR (print_state_pool); | |
c4f37e80 | 835 | } |
9de87eea | 836 | scm_i_pthread_mutex_unlock (&print_state_mutex); |
7888309b | 837 | if (scm_is_false (handle)) |
d5cf5324 | 838 | handle = scm_list_1 (make_print_state ()); |
c4f37e80 | 839 | pstate_scm = SCM_CAR (handle); |
c62fbfe1 | 840 | } |
c62fbfe1 | 841 | |
c4f37e80 | 842 | pstate = SCM_PRINT_STATE (pstate_scm); |
15635be5 | 843 | old_writingp = pstate->writingp; |
c62fbfe1 MD |
844 | pstate->writingp = writingp; |
845 | scm_iprin1 (exp, port, pstate); | |
15635be5 | 846 | pstate->writingp = old_writingp; |
c62fbfe1 | 847 | |
bb35f315 MV |
848 | /* Return print state to pool if it has been created above and |
849 | hasn't escaped to Scheme. */ | |
850 | ||
7888309b | 851 | if (scm_is_true (handle) && !pstate->revealed) |
c4f37e80 | 852 | { |
9de87eea | 853 | scm_i_pthread_mutex_lock (&print_state_mutex); |
d5cf5324 DH |
854 | SCM_SETCDR (handle, print_state_pool); |
855 | print_state_pool = handle; | |
9de87eea | 856 | scm_i_pthread_mutex_unlock (&print_state_mutex); |
c4f37e80 | 857 | } |
a51ea417 MD |
858 | } |
859 | ||
f4bc4e59 LC |
860 | /* Convert codepoint CH to UTF-8 and store the result in UTF8. Return |
861 | the number of bytes of the UTF-8-encoded string. */ | |
862 | static size_t | |
863 | codepoint_to_utf8 (scm_t_wchar ch, scm_t_uint8 utf8[4]) | |
9c44cd45 | 864 | { |
f4bc4e59 LC |
865 | size_t len; |
866 | scm_t_uint32 codepoint; | |
867 | ||
868 | codepoint = (scm_t_uint32) ch; | |
07f49ac7 | 869 | |
f4bc4e59 | 870 | if (codepoint <= 0x7f) |
07f49ac7 | 871 | { |
f4bc4e59 LC |
872 | len = 1; |
873 | utf8[0] = (scm_t_uint8) codepoint; | |
874 | } | |
875 | else if (codepoint <= 0x7ffUL) | |
876 | { | |
877 | len = 2; | |
878 | utf8[0] = 0xc0 | (codepoint >> 6); | |
879 | utf8[1] = 0x80 | (codepoint & 0x3f); | |
880 | } | |
881 | else if (codepoint <= 0xffffUL) | |
882 | { | |
883 | len = 3; | |
884 | utf8[0] = 0xe0 | (codepoint >> 12); | |
885 | utf8[1] = 0x80 | ((codepoint >> 6) & 0x3f); | |
886 | utf8[2] = 0x80 | (codepoint & 0x3f); | |
07f49ac7 LC |
887 | } |
888 | else | |
889 | { | |
f4bc4e59 LC |
890 | len = 4; |
891 | utf8[0] = 0xf0 | (codepoint >> 18); | |
892 | utf8[1] = 0x80 | ((codepoint >> 12) & 0x3f); | |
893 | utf8[2] = 0x80 | ((codepoint >> 6) & 0x3f); | |
894 | utf8[3] = 0x80 | (codepoint & 0x3f); | |
895 | } | |
896 | ||
897 | return len; | |
898 | } | |
899 | ||
f4bc4e59 LC |
900 | #define STR_REF(s, x) \ |
901 | (narrow_p \ | |
902 | ? (scm_t_wchar) ((unsigned char *) (s))[x] \ | |
903 | : ((scm_t_wchar *) (s))[x]) | |
904 | ||
7b292a9d LC |
905 | /* Write STR to PORT as UTF-8. STR is a LEN-codepoint string; it is |
906 | narrow if NARROW_P is true, wide otherwise. Return LEN. */ | |
907 | static size_t | |
908 | display_string_as_utf8 (const void *str, int narrow_p, size_t len, | |
909 | SCM port) | |
910 | { | |
911 | size_t printed = 0; | |
912 | ||
913 | while (len > printed) | |
914 | { | |
915 | size_t utf8_len, i; | |
916 | char *input, utf8_buf[256]; | |
917 | ||
918 | /* Convert STR to UTF-8. */ | |
919 | for (i = printed, utf8_len = 0, input = utf8_buf; | |
920 | i < len && utf8_len + 4 < sizeof (utf8_buf); | |
921 | i++) | |
922 | { | |
923 | utf8_len += codepoint_to_utf8 (STR_REF (str, i), | |
924 | (scm_t_uint8 *) input); | |
925 | input = utf8_buf + utf8_len; | |
926 | } | |
927 | ||
928 | /* INPUT was successfully converted, entirely; print the | |
929 | result. */ | |
930 | scm_lfwrite (utf8_buf, utf8_len, port); | |
931 | printed += i - printed; | |
932 | } | |
933 | ||
934 | assert (printed == len); | |
935 | ||
936 | return len; | |
937 | } | |
938 | ||
939 | /* Convert STR through PORT's output conversion descriptor and write the | |
940 | output to PORT. Return the number of codepoints written. */ | |
941 | static size_t | |
942 | display_string_using_iconv (const void *str, int narrow_p, size_t len, | |
943 | SCM port, | |
944 | scm_t_string_failed_conversion_handler strategy) | |
945 | { | |
f4bc4e59 | 946 | size_t printed; |
337edc59 | 947 | scm_t_iconv_descriptors *id; |
cdd3d6c9 | 948 | scm_t_port_internal *pti = SCM_PORT_GET_INTERNAL (port); |
f4bc4e59 | 949 | |
cdd3d6c9 MW |
950 | id = scm_i_port_iconv_descriptors (port, SCM_PORT_WRITE); |
951 | ||
952 | if (SCM_UNLIKELY (pti->at_stream_start_for_bom_write && len > 0)) | |
953 | { | |
954 | scm_t_port *pt = SCM_PTAB_ENTRY (port); | |
955 | ||
956 | /* Record that we're no longer at stream start. */ | |
957 | pti->at_stream_start_for_bom_write = 0; | |
958 | if (pt->rw_random) | |
959 | pti->at_stream_start_for_bom_read = 0; | |
960 | ||
961 | /* Write a BOM if appropriate. */ | |
96965a6e MW |
962 | if (SCM_UNLIKELY (c_strcasecmp(pt->encoding, "UTF-16") == 0 |
963 | || c_strcasecmp(pt->encoding, "UTF-32") == 0)) | |
cdd3d6c9 MW |
964 | display_character (SCM_UNICODE_BOM, port, iconveh_error); |
965 | } | |
f4bc4e59 | 966 | |
f4bc4e59 LC |
967 | printed = 0; |
968 | ||
969 | while (len > printed) | |
970 | { | |
971 | size_t done, utf8_len, input_left, output_left, i; | |
972 | size_t codepoints_read, output_len; | |
973 | char *input, *output; | |
974 | char utf8_buf[256], encoded_output[256]; | |
975 | size_t offsets[256]; | |
976 | ||
977 | /* Convert STR to UTF-8. */ | |
978 | for (i = printed, utf8_len = 0, input = utf8_buf; | |
979 | i < len && utf8_len + 4 < sizeof (utf8_buf); | |
980 | i++) | |
07f49ac7 | 981 | { |
f4bc4e59 LC |
982 | offsets[utf8_len] = i; |
983 | utf8_len += codepoint_to_utf8 (STR_REF (str, i), | |
984 | (scm_t_uint8 *) input); | |
985 | input = utf8_buf + utf8_len; | |
986 | } | |
987 | ||
988 | input = utf8_buf; | |
989 | input_left = utf8_len; | |
990 | ||
991 | output = encoded_output; | |
992 | output_left = sizeof (encoded_output); | |
993 | ||
337edc59 | 994 | done = iconv (id->output_cd, &input, &input_left, |
f4bc4e59 | 995 | &output, &output_left); |
07f49ac7 | 996 | |
f4bc4e59 LC |
997 | output_len = sizeof (encoded_output) - output_left; |
998 | ||
999 | if (SCM_UNLIKELY (done == (size_t) -1)) | |
1000 | { | |
b2548e23 AW |
1001 | int errno_save = errno; |
1002 | ||
f4bc4e59 | 1003 | /* Reset the `iconv' state. */ |
337edc59 | 1004 | iconv (id->output_cd, NULL, NULL, NULL, NULL); |
f4bc4e59 | 1005 | |
7174bc08 LC |
1006 | /* Print the OUTPUT_LEN bytes successfully converted. */ |
1007 | scm_lfwrite (encoded_output, output_len, port); | |
1008 | ||
1009 | /* See how many input codepoints these OUTPUT_LEN bytes | |
1010 | corresponds to. */ | |
1011 | codepoints_read = offsets[input - utf8_buf] - printed; | |
1012 | printed += codepoints_read; | |
1013 | ||
b2548e23 | 1014 | if (errno_save == EILSEQ && |
f4bc4e59 | 1015 | strategy != SCM_FAILED_CONVERSION_ERROR) |
07f49ac7 | 1016 | { |
f4bc4e59 LC |
1017 | /* Conversion failed somewhere in INPUT and we want to |
1018 | escape or substitute the offending input character. */ | |
1019 | ||
f4bc4e59 | 1020 | if (strategy == SCM_FAILED_CONVERSION_ESCAPE_SEQUENCE) |
f1ee6d54 | 1021 | { |
f4bc4e59 LC |
1022 | scm_t_wchar ch; |
1023 | ||
1024 | /* Find CH, the offending codepoint, and escape it. */ | |
1025 | ch = STR_REF (str, offsets[input - utf8_buf]); | |
1026 | write_character_escaped (ch, 1, port); | |
f1ee6d54 | 1027 | } |
07f49ac7 | 1028 | else |
f4bc4e59 LC |
1029 | /* STRATEGY is `SCM_FAILED_CONVERSION_QUESTION_MARK'. */ |
1030 | display_string ("?", 1, 1, port, strategy); | |
9c44cd45 | 1031 | |
f4bc4e59 LC |
1032 | printed++; |
1033 | } | |
1034 | else | |
1035 | /* Something bad happened that we can't handle: bail out. */ | |
1036 | break; | |
07f49ac7 LC |
1037 | } |
1038 | else | |
f4bc4e59 LC |
1039 | { |
1040 | /* INPUT was successfully converted, entirely; print the | |
1041 | result. */ | |
1042 | scm_lfwrite (encoded_output, output_len, port); | |
1043 | codepoints_read = i - printed; | |
1044 | printed += codepoints_read; | |
1045 | } | |
07f49ac7 LC |
1046 | } |
1047 | ||
1048 | return printed; | |
7b292a9d LC |
1049 | } |
1050 | ||
f4bc4e59 | 1051 | #undef STR_REF |
7b292a9d LC |
1052 | |
1053 | /* Display the LEN codepoints in STR to PORT according to STRATEGY; | |
1054 | return the number of codepoints successfully displayed. If NARROW_P, | |
1055 | then STR is interpreted as a sequence of `char', denoting a Latin-1 | |
1056 | string; otherwise it's interpreted as a sequence of | |
1057 | `scm_t_wchar'. */ | |
1058 | static size_t | |
1059 | display_string (const void *str, int narrow_p, | |
1060 | size_t len, SCM port, | |
1061 | scm_t_string_failed_conversion_handler strategy) | |
1062 | ||
1063 | { | |
e4598559 | 1064 | scm_t_port_internal *pti; |
7b292a9d | 1065 | |
e4598559 | 1066 | pti = SCM_PORT_GET_INTERNAL (port); |
7b292a9d | 1067 | |
337edc59 | 1068 | if (pti->encoding_mode == SCM_PORT_ENCODING_MODE_UTF8) |
7b292a9d LC |
1069 | return display_string_as_utf8 (str, narrow_p, len, port); |
1070 | else | |
1071 | return display_string_using_iconv (str, narrow_p, len, | |
1072 | port, strategy); | |
f4bc4e59 LC |
1073 | } |
1074 | ||
1075 | /* Attempt to display CH to PORT according to STRATEGY. Return non-zero | |
1076 | if CH was successfully displayed, zero otherwise (e.g., if it was not | |
1077 | representable in PORT's encoding.) */ | |
1078 | static int | |
1079 | display_character (scm_t_wchar ch, SCM port, | |
1080 | scm_t_string_failed_conversion_handler strategy) | |
1081 | { | |
1082 | return display_string (&ch, 0, 1, port, strategy) == 1; | |
07f49ac7 LC |
1083 | } |
1084 | ||
33d92fe6 LC |
1085 | /* Attempt to pretty-print CH, a combining character, to PORT. Return |
1086 | zero upon failure, non-zero otherwise. The idea is to print CH above | |
1087 | a dotted circle to make it more visible. */ | |
1088 | static int | |
1089 | write_combining_character (scm_t_wchar ch, SCM port) | |
1090 | { | |
f4bc4e59 LC |
1091 | scm_t_wchar str[2]; |
1092 | ||
1093 | str[0] = SCM_CODEPOINT_DOTTED_CIRCLE; | |
1094 | str[1] = ch; | |
1095 | ||
1096 | return display_string (str, 0, 2, port, iconveh_error) == 2; | |
1097 | } | |
33d92fe6 | 1098 | |
f4bc4e59 LC |
1099 | /* Write CH to PORT in its escaped form, using the string escape syntax |
1100 | if STRING_ESCAPES_P is non-zero. */ | |
1101 | static void | |
1102 | write_character_escaped (scm_t_wchar ch, int string_escapes_p, SCM port) | |
1103 | { | |
1104 | if (string_escapes_p) | |
33d92fe6 | 1105 | { |
f4bc4e59 LC |
1106 | /* Represent CH using the in-string escape syntax. */ |
1107 | ||
1108 | static const char hex[] = "0123456789abcdef"; | |
1109 | static const char escapes[7] = "abtnvfr"; | |
1110 | char buf[9]; | |
1111 | ||
1112 | if (ch >= 0x07 && ch <= 0x0D && ch != 0x0A) | |
33d92fe6 | 1113 | { |
f4bc4e59 LC |
1114 | /* Use special escapes for some C0 controls. */ |
1115 | buf[0] = '\\'; | |
1116 | buf[1] = escapes[ch - 0x07]; | |
1117 | scm_lfwrite (buf, 2, port); | |
1118 | } | |
1119 | else if (!SCM_R6RS_ESCAPES_P) | |
1120 | { | |
1121 | if (ch <= 0xFF) | |
1122 | { | |
1123 | buf[0] = '\\'; | |
1124 | buf[1] = 'x'; | |
1125 | buf[2] = hex[ch / 16]; | |
1126 | buf[3] = hex[ch % 16]; | |
1127 | scm_lfwrite (buf, 4, port); | |
1128 | } | |
1129 | else if (ch <= 0xFFFF) | |
1130 | { | |
1131 | buf[0] = '\\'; | |
1132 | buf[1] = 'u'; | |
1133 | buf[2] = hex[(ch & 0xF000) >> 12]; | |
1134 | buf[3] = hex[(ch & 0xF00) >> 8]; | |
1135 | buf[4] = hex[(ch & 0xF0) >> 4]; | |
1136 | buf[5] = hex[(ch & 0xF)]; | |
1137 | scm_lfwrite (buf, 6, port); | |
1138 | } | |
1139 | else if (ch > 0xFFFF) | |
1140 | { | |
1141 | buf[0] = '\\'; | |
1142 | buf[1] = 'U'; | |
1143 | buf[2] = hex[(ch & 0xF00000) >> 20]; | |
1144 | buf[3] = hex[(ch & 0xF0000) >> 16]; | |
1145 | buf[4] = hex[(ch & 0xF000) >> 12]; | |
1146 | buf[5] = hex[(ch & 0xF00) >> 8]; | |
1147 | buf[6] = hex[(ch & 0xF0) >> 4]; | |
1148 | buf[7] = hex[(ch & 0xF)]; | |
1149 | scm_lfwrite (buf, 8, port); | |
1150 | } | |
33d92fe6 LC |
1151 | } |
1152 | else | |
f4bc4e59 LC |
1153 | { |
1154 | /* Print an R6RS variable-length hex escape: "\xNNNN;". */ | |
1155 | scm_t_wchar ch2 = ch; | |
1156 | ||
1157 | int i = 8; | |
1158 | buf[i] = ';'; | |
1159 | i --; | |
1160 | if (ch == 0) | |
1161 | buf[i--] = '0'; | |
1162 | else | |
1163 | while (ch2 > 0) | |
1164 | { | |
1165 | buf[i] = hex[ch2 & 0xF]; | |
1166 | ch2 >>= 4; | |
1167 | i --; | |
1168 | } | |
1169 | buf[i] = 'x'; | |
1170 | i --; | |
1171 | buf[i] = '\\'; | |
1172 | scm_lfwrite (buf + i, 9 - i, port); | |
1173 | } | |
33d92fe6 LC |
1174 | } |
1175 | else | |
f4bc4e59 LC |
1176 | { |
1177 | /* Represent CH using the character escape syntax. */ | |
1178 | const char *name; | |
33d92fe6 | 1179 | |
f4bc4e59 LC |
1180 | name = scm_i_charname (SCM_MAKE_CHAR (ch)); |
1181 | if (name != NULL) | |
1182 | scm_puts (name, port); | |
1183 | else | |
1184 | PRINT_CHAR_ESCAPE (ch, port); | |
1185 | } | |
33d92fe6 LC |
1186 | } |
1187 | ||
07f49ac7 LC |
1188 | /* Write CH to PORT, escaping it if it's non-graphic or not |
1189 | representable in PORT's encoding. If STRING_ESCAPES_P is true and CH | |
1190 | needs to be escaped, it is escaped using the in-string escape syntax; | |
1191 | otherwise the character escape syntax is used. */ | |
1192 | static void | |
1193 | write_character (scm_t_wchar ch, SCM port, int string_escapes_p) | |
1194 | { | |
1195 | int printed = 0; | |
f4bc4e59 LC |
1196 | scm_t_string_failed_conversion_handler strategy; |
1197 | ||
478848cb | 1198 | strategy = PORT_CONVERSION_HANDLER (port); |
07f49ac7 LC |
1199 | |
1200 | if (string_escapes_p) | |
1201 | { | |
1202 | /* Check if CH deserves special treatment. */ | |
1203 | if (ch == '"' || ch == '\\') | |
1204 | { | |
f4bc4e59 LC |
1205 | display_character ('\\', port, iconveh_question_mark); |
1206 | display_character (ch, port, strategy); | |
07f49ac7 LC |
1207 | printed = 1; |
1208 | } | |
8500b186 AW |
1209 | else if (ch == '\n' && SCM_PRINT_ESCAPE_NEWLINES_P) |
1210 | { | |
1211 | display_character ('\\', port, iconveh_question_mark); | |
1212 | display_character ('n', port, strategy); | |
1213 | printed = 1; | |
1214 | } | |
07f49ac7 LC |
1215 | else if (ch == ' ' || ch == '\n') |
1216 | { | |
f4bc4e59 | 1217 | display_character (ch, port, strategy); |
07f49ac7 LC |
1218 | printed = 1; |
1219 | } | |
1220 | } | |
1221 | else | |
33d92fe6 | 1222 | { |
f4bc4e59 | 1223 | display_string ("#\\", 1, 2, port, iconveh_question_mark); |
33d92fe6 LC |
1224 | |
1225 | if (uc_combining_class (ch) != UC_CCC_NR) | |
1226 | /* Character is a combining character, so attempt to | |
1227 | pretty-print it. */ | |
1228 | printed = write_combining_character (ch, port); | |
1229 | } | |
07f49ac7 LC |
1230 | |
1231 | if (!printed | |
1232 | && uc_is_general_category_withtable (ch, | |
1233 | UC_CATEGORY_MASK_L | | |
1234 | UC_CATEGORY_MASK_M | | |
1235 | UC_CATEGORY_MASK_N | | |
1236 | UC_CATEGORY_MASK_P | | |
1237 | UC_CATEGORY_MASK_S)) | |
1238 | /* CH is graphic; attempt to display it. */ | |
1239 | printed = display_character (ch, port, iconveh_error); | |
1240 | ||
1241 | if (!printed) | |
f4bc4e59 LC |
1242 | /* CH isn't graphic or cannot be represented in PORT's encoding. */ |
1243 | write_character_escaped (ch, string_escapes_p, port); | |
9c44cd45 | 1244 | } |
0f2d19dd | 1245 | |
b908768a LC |
1246 | /* Display STR to PORT from START inclusive to END exclusive. */ |
1247 | void | |
1248 | scm_i_display_substring (SCM str, size_t start, size_t end, SCM port) | |
1249 | { | |
1250 | int narrow_p; | |
1251 | const char *buf; | |
1252 | size_t len, printed; | |
1253 | ||
1254 | buf = scm_i_string_data (str); | |
1255 | len = end - start; | |
1256 | narrow_p = scm_i_is_narrow_string (str); | |
1257 | buf += start * (narrow_p ? sizeof (char) : sizeof (scm_t_wchar)); | |
1258 | ||
1259 | printed = display_string (buf, narrow_p, end - start, port, | |
1260 | PORT_CONVERSION_HANDLER (port)); | |
1261 | ||
1262 | if (SCM_UNLIKELY (printed < len)) | |
1263 | scm_encoding_error (__func__, errno, | |
1264 | "cannot convert to output locale", | |
1265 | port, scm_c_string_ref (str, printed + start)); | |
1266 | } | |
1267 | ||
1268 | \f | |
0f2d19dd JB |
1269 | /* Print an integer. |
1270 | */ | |
1cc91f1b | 1271 | |
0f2d19dd | 1272 | void |
a406c9e9 | 1273 | scm_intprint (scm_t_intmax n, int radix, SCM port) |
0f2d19dd JB |
1274 | { |
1275 | char num_buf[SCM_INTBUFLEN]; | |
b7f3516f | 1276 | scm_lfwrite (num_buf, scm_iint2str (n, radix, num_buf), port); |
0f2d19dd JB |
1277 | } |
1278 | ||
a406c9e9 MV |
1279 | void |
1280 | scm_uintprint (scm_t_uintmax n, int radix, SCM port) | |
1281 | { | |
1282 | char num_buf[SCM_INTBUFLEN]; | |
1283 | scm_lfwrite (num_buf, scm_iuint2str (n, radix, num_buf), port); | |
1284 | } | |
1285 | ||
0f2d19dd JB |
1286 | /* Print an object of unrecognized type. |
1287 | */ | |
1cc91f1b | 1288 | |
0f2d19dd | 1289 | void |
1bbd0b84 | 1290 | scm_ipruk (char *hdr, SCM ptr, SCM port) |
0f2d19dd | 1291 | { |
b7f3516f TT |
1292 | scm_puts ("#<unknown-", port); |
1293 | scm_puts (hdr, port); | |
26224b3f | 1294 | if (1) /* (scm_in_heap_p (ptr)) */ /* FIXME */ |
0f2d19dd | 1295 | { |
b7f3516f | 1296 | scm_puts (" (0x", port); |
0345e278 | 1297 | scm_uintprint (SCM_CELL_WORD_0 (ptr), 16, port); |
b7f3516f | 1298 | scm_puts (" . 0x", port); |
0345e278 | 1299 | scm_uintprint (SCM_CELL_WORD_1 (ptr), 16, port); |
b7f3516f | 1300 | scm_puts (") @", port); |
0f2d19dd | 1301 | } |
b7f3516f | 1302 | scm_puts (" 0x", port); |
0345e278 | 1303 | scm_uintprint (SCM_UNPACK (ptr), 16, port); |
b7f3516f | 1304 | scm_putc ('>', port); |
0f2d19dd JB |
1305 | } |
1306 | ||
1cc91f1b | 1307 | |
904a077d | 1308 | /* Print a list. |
22a52da1 | 1309 | */ |
0f2d19dd | 1310 | void |
34d19ef6 | 1311 | scm_iprlist (char *hdr, SCM exp, int tlr, SCM port, scm_print_state *pstate) |
0f2d19dd | 1312 | { |
c62fbfe1 | 1313 | register SCM hare, tortoise; |
c014a02e | 1314 | long floor = pstate->top - 2; |
b7f3516f | 1315 | scm_puts (hdr, port); |
0f2d19dd | 1316 | /* CHECK_INTS; */ |
c62fbfe1 MD |
1317 | if (pstate->fancyp) |
1318 | goto fancy_printing; | |
1319 | ||
1320 | /* Run a hare and tortoise so that total time complexity will be | |
1321 | O(depth * N) instead of O(N^2). */ | |
1322 | hare = SCM_CDR (exp); | |
1323 | tortoise = exp; | |
d2e53ed6 | 1324 | while (scm_is_pair (hare)) |
c62fbfe1 | 1325 | { |
bc36d050 | 1326 | if (scm_is_eq (hare, tortoise)) |
c62fbfe1 MD |
1327 | goto fancy_printing; |
1328 | hare = SCM_CDR (hare); | |
d2e53ed6 | 1329 | if (!scm_is_pair (hare)) |
c62fbfe1 MD |
1330 | break; |
1331 | hare = SCM_CDR (hare); | |
1332 | tortoise = SCM_CDR (tortoise); | |
1333 | } | |
1334 | ||
1335 | /* No cdr cycles intrinsic to this list */ | |
1336 | scm_iprin1 (SCM_CAR (exp), port, pstate); | |
d2e53ed6 | 1337 | for (exp = SCM_CDR (exp); scm_is_pair (exp); exp = SCM_CDR (exp)) |
0f2d19dd | 1338 | { |
c014a02e | 1339 | register long i; |
5ca6dc39 | 1340 | |
c62fbfe1 | 1341 | for (i = floor; i >= 0; --i) |
509759dd | 1342 | if (scm_is_eq (PSTATE_STACK_REF(pstate, i), exp)) |
c62fbfe1 MD |
1343 | goto circref; |
1344 | PUSH_REF (pstate, exp); | |
b7f3516f | 1345 | scm_putc (' ', port); |
0f2d19dd | 1346 | /* CHECK_INTS; */ |
c62fbfe1 | 1347 | scm_iprin1 (SCM_CAR (exp), port, pstate); |
0f2d19dd | 1348 | } |
c96d76b8 | 1349 | if (!SCM_NULL_OR_NIL_P (exp)) |
0f2d19dd | 1350 | { |
b7f3516f | 1351 | scm_puts (" . ", port); |
c62fbfe1 | 1352 | scm_iprin1 (exp, port, pstate); |
0f2d19dd | 1353 | } |
c62fbfe1 | 1354 | |
a51ea417 | 1355 | end: |
b7f3516f | 1356 | scm_putc (tlr, port); |
c62fbfe1 | 1357 | pstate->top = floor + 2; |
a51ea417 | 1358 | return; |
c62fbfe1 MD |
1359 | |
1360 | fancy_printing: | |
1361 | { | |
c014a02e | 1362 | long n = pstate->length; |
c62fbfe1 MD |
1363 | |
1364 | scm_iprin1 (SCM_CAR (exp), port, pstate); | |
1365 | exp = SCM_CDR (exp); --n; | |
d2e53ed6 | 1366 | for (; scm_is_pair (exp); exp = SCM_CDR (exp)) |
c62fbfe1 | 1367 | { |
c014a02e | 1368 | register unsigned long i; |
5ca6dc39 | 1369 | |
c62fbfe1 | 1370 | for (i = 0; i < pstate->top; ++i) |
509759dd | 1371 | if (scm_is_eq (PSTATE_STACK_REF(pstate, i), exp)) |
c62fbfe1 MD |
1372 | goto fancy_circref; |
1373 | if (pstate->fancyp) | |
1374 | { | |
1375 | if (n == 0) | |
1376 | { | |
b7f3516f | 1377 | scm_puts (" ...", port); |
c62fbfe1 MD |
1378 | goto skip_tail; |
1379 | } | |
1380 | else | |
1381 | --n; | |
1382 | } | |
1383 | PUSH_REF(pstate, exp); | |
1384 | ++pstate->list_offset; | |
b7f3516f | 1385 | scm_putc (' ', port); |
c62fbfe1 MD |
1386 | /* CHECK_INTS; */ |
1387 | scm_iprin1 (SCM_CAR (exp), port, pstate); | |
1388 | } | |
1389 | } | |
c96d76b8 | 1390 | if (!SCM_NULL_OR_NIL_P (exp)) |
c62fbfe1 | 1391 | { |
b7f3516f | 1392 | scm_puts (" . ", port); |
c62fbfe1 MD |
1393 | scm_iprin1 (exp, port, pstate); |
1394 | } | |
1395 | skip_tail: | |
1396 | pstate->list_offset -= pstate->top - floor - 2; | |
a51ea417 | 1397 | goto end; |
a51ea417 | 1398 | |
c62fbfe1 MD |
1399 | fancy_circref: |
1400 | pstate->list_offset -= pstate->top - floor - 2; | |
1401 | ||
1402 | circref: | |
b7f3516f | 1403 | scm_puts (" . ", port); |
c62fbfe1 MD |
1404 | print_circref (port, pstate, exp); |
1405 | goto end; | |
0f2d19dd JB |
1406 | } |
1407 | ||
1408 | \f | |
1409 | ||
bb35f315 MV |
1410 | int |
1411 | scm_valid_oport_value_p (SCM val) | |
1412 | { | |
368cf54d GB |
1413 | return (SCM_OPOUTPORTP (val) |
1414 | || (SCM_PORT_WITH_PS_P (val) | |
1415 | && SCM_OPOUTPORTP (SCM_PORT_WITH_PS_PORT (val)))); | |
bb35f315 MV |
1416 | } |
1417 | ||
8b840115 | 1418 | /* SCM_GPROC(s_write, "write", 1, 1, 0, scm_write, g_write); */ |
1cc91f1b | 1419 | |
0f2d19dd | 1420 | SCM |
1bbd0b84 | 1421 | scm_write (SCM obj, SCM port) |
0f2d19dd JB |
1422 | { |
1423 | if (SCM_UNBNDP (port)) | |
9de87eea | 1424 | port = scm_current_output_port (); |
3eb7e6ee JB |
1425 | |
1426 | SCM_ASSERT (scm_valid_oport_value_p (port), port, SCM_ARG2, s_write); | |
bb35f315 | 1427 | |
a51ea417 | 1428 | scm_prin1 (obj, port, 1); |
0f2d19dd JB |
1429 | return SCM_UNSPECIFIED; |
1430 | } | |
1431 | ||
1432 | ||
8b840115 | 1433 | /* SCM_GPROC(s_display, "display", 1, 1, 0, scm_display, g_display); */ |
1cc91f1b | 1434 | |
0f2d19dd | 1435 | SCM |
1bbd0b84 | 1436 | scm_display (SCM obj, SCM port) |
0f2d19dd JB |
1437 | { |
1438 | if (SCM_UNBNDP (port)) | |
9de87eea | 1439 | port = scm_current_output_port (); |
3eb7e6ee JB |
1440 | |
1441 | SCM_ASSERT (scm_valid_oport_value_p (port), port, SCM_ARG2, s_display); | |
bb35f315 | 1442 | |
a51ea417 | 1443 | scm_prin1 (obj, port, 0); |
0f2d19dd JB |
1444 | return SCM_UNSPECIFIED; |
1445 | } | |
1446 | ||
70d63753 GB |
1447 | |
1448 | SCM_DEFINE (scm_simple_format, "simple-format", 2, 0, 1, | |
1449 | (SCM destination, SCM message, SCM args), | |
eca65e90 MG |
1450 | "Write @var{message} to @var{destination}, defaulting to\n" |
1451 | "the current output port.\n" | |
1452 | "@var{message} can contain @code{~A} (was @code{%s}) and\n" | |
1453 | "@code{~S} (was @code{%S}) escapes. When printed,\n" | |
1454 | "the escapes are replaced with corresponding members of\n" | |
b7e64f8b | 1455 | "@var{args}:\n" |
eca65e90 MG |
1456 | "@code{~A} formats using @code{display} and @code{~S} formats\n" |
1457 | "using @code{write}.\n" | |
1458 | "If @var{destination} is @code{#t}, then use the current output\n" | |
1459 | "port, if @var{destination} is @code{#f}, then return a string\n" | |
1460 | "containing the formatted text. Does not add a trailing newline.") | |
70d63753 GB |
1461 | #define FUNC_NAME s_scm_simple_format |
1462 | { | |
dfd03fb9 | 1463 | SCM port, answer = SCM_UNSPECIFIED; |
70d63753 GB |
1464 | int fReturnString = 0; |
1465 | int writingp; | |
889975e5 | 1466 | size_t start, p, end; |
70d63753 | 1467 | |
bc36d050 | 1468 | if (scm_is_eq (destination, SCM_BOOL_T)) |
daba1a71 | 1469 | { |
9de87eea | 1470 | destination = port = scm_current_output_port (); |
daba1a71 | 1471 | } |
7888309b | 1472 | else if (scm_is_false (destination)) |
daba1a71 MD |
1473 | { |
1474 | fReturnString = 1; | |
0b2c2ba3 | 1475 | port = scm_mkstrport (SCM_INUM0, SCM_BOOL_F, |
dfd03fb9 MD |
1476 | SCM_OPN | SCM_WRTNG, |
1477 | FUNC_NAME); | |
1478 | destination = port; | |
daba1a71 MD |
1479 | } |
1480 | else | |
1481 | { | |
1482 | SCM_VALIDATE_OPORT_VALUE (1, destination); | |
dfd03fb9 | 1483 | port = SCM_COERCE_OUTPORT (destination); |
daba1a71 MD |
1484 | } |
1485 | SCM_VALIDATE_STRING (2, message); | |
af45e3b0 | 1486 | SCM_VALIDATE_REST_ARGUMENT (args); |
70d63753 | 1487 | |
889975e5 MG |
1488 | p = 0; |
1489 | start = 0; | |
1490 | end = scm_i_string_length (message); | |
b24b5e13 | 1491 | for (p = start; p != end; ++p) |
889975e5 | 1492 | if (scm_i_string_ref (message, p) == '~') |
70d63753 | 1493 | { |
b24b5e13 | 1494 | if (++p == end) |
6662998f MV |
1495 | break; |
1496 | ||
889975e5 | 1497 | switch (scm_i_string_ref (message, p)) |
6662998f MV |
1498 | { |
1499 | case 'A': case 'a': | |
1500 | writingp = 0; | |
1501 | break; | |
1502 | case 'S': case 's': | |
1503 | writingp = 1; | |
1504 | break; | |
1505 | case '~': | |
889975e5 | 1506 | scm_lfwrite_substr (message, start, p, port); |
6662998f MV |
1507 | start = p + 1; |
1508 | continue; | |
1509 | case '%': | |
889975e5 | 1510 | scm_lfwrite_substr (message, start, p - 1, port); |
dfd03fb9 | 1511 | scm_newline (port); |
6662998f MV |
1512 | start = p + 1; |
1513 | continue; | |
1514 | default: | |
1afff620 | 1515 | SCM_MISC_ERROR ("FORMAT: Unsupported format option ~~~A - use (ice-9 format) instead", |
889975e5 | 1516 | scm_list_1 (SCM_MAKE_CHAR (scm_i_string_ref (message, p)))); |
6662998f MV |
1517 | |
1518 | } | |
70d63753 | 1519 | |
6662998f | 1520 | |
d2e53ed6 | 1521 | if (!scm_is_pair (args)) |
1afff620 | 1522 | SCM_MISC_ERROR ("FORMAT: Missing argument for ~~~A", |
889975e5 | 1523 | scm_list_1 (SCM_MAKE_CHAR (scm_i_string_ref (message, p)))); |
6662998f | 1524 | |
889975e5 | 1525 | scm_lfwrite_substr (message, start, p - 1, port); |
dfd03fb9 | 1526 | /* we pass destination here */ |
70d63753 GB |
1527 | scm_prin1 (SCM_CAR (args), destination, writingp); |
1528 | args = SCM_CDR (args); | |
1529 | start = p + 1; | |
1530 | } | |
6662998f | 1531 | |
889975e5 | 1532 | scm_lfwrite_substr (message, start, p, port); |
bc36d050 | 1533 | if (!scm_is_eq (args, SCM_EOL)) |
1afff620 KN |
1534 | SCM_MISC_ERROR ("FORMAT: ~A superfluous arguments", |
1535 | scm_list_1 (scm_length (args))); | |
70d63753 GB |
1536 | |
1537 | if (fReturnString) | |
1538 | answer = scm_strport_to_string (destination); | |
1539 | ||
daba1a71 | 1540 | return scm_return_first (answer, message); |
70d63753 GB |
1541 | } |
1542 | #undef FUNC_NAME | |
1543 | ||
1544 | ||
3b3b36dd | 1545 | SCM_DEFINE (scm_newline, "newline", 0, 1, 0, |
b450f070 | 1546 | (SCM port), |
8f85c0c6 NJ |
1547 | "Send a newline to @var{port}.\n" |
1548 | "If @var{port} is omitted, send to the current output port.") | |
1bbd0b84 | 1549 | #define FUNC_NAME s_scm_newline |
0f2d19dd JB |
1550 | { |
1551 | if (SCM_UNBNDP (port)) | |
9de87eea | 1552 | port = scm_current_output_port (); |
3eb7e6ee | 1553 | |
34d19ef6 | 1554 | SCM_VALIDATE_OPORT_VALUE (1, port); |
bb35f315 | 1555 | |
0ef4ae82 | 1556 | scm_putc ('\n', SCM_COERCE_OUTPORT (port)); |
0f2d19dd JB |
1557 | return SCM_UNSPECIFIED; |
1558 | } | |
1bbd0b84 | 1559 | #undef FUNC_NAME |
0f2d19dd | 1560 | |
3b3b36dd | 1561 | SCM_DEFINE (scm_write_char, "write-char", 1, 1, 0, |
b450f070 | 1562 | (SCM chr, SCM port), |
eca65e90 | 1563 | "Send character @var{chr} to @var{port}.") |
1bbd0b84 | 1564 | #define FUNC_NAME s_scm_write_char |
0f2d19dd JB |
1565 | { |
1566 | if (SCM_UNBNDP (port)) | |
9de87eea | 1567 | port = scm_current_output_port (); |
3eb7e6ee | 1568 | |
34d19ef6 HWN |
1569 | SCM_VALIDATE_CHAR (1, chr); |
1570 | SCM_VALIDATE_OPORT_VALUE (2, port); | |
07f49ac7 LC |
1571 | |
1572 | port = SCM_COERCE_OUTPORT (port); | |
1573 | if (!display_character (SCM_CHAR (chr), port, | |
478848cb | 1574 | PORT_CONVERSION_HANDLER (port))) |
07f49ac7 LC |
1575 | scm_encoding_error (__func__, errno, |
1576 | "cannot convert to output locale", | |
6851d3be | 1577 | port, chr); |
07f49ac7 | 1578 | |
0f2d19dd JB |
1579 | return SCM_UNSPECIFIED; |
1580 | } | |
1bbd0b84 | 1581 | #undef FUNC_NAME |
0f2d19dd | 1582 | |
0f2d19dd JB |
1583 | \f |
1584 | ||
bb35f315 | 1585 | /* Call back to Scheme code to do the printing of special objects |
c19bc088 MD |
1586 | * (like structs). SCM_PRINTER_APPLY applies PROC to EXP and a smob |
1587 | * containing PORT and PSTATE. This object can be used as the port for | |
1588 | * display/write etc to continue the current print chain. The REVEALED | |
1589 | * field of PSTATE is set to true to indicate that the print state has | |
1590 | * escaped to Scheme and thus has to be freed by the GC. | |
1591 | */ | |
1592 | ||
92c2555f | 1593 | scm_t_bits scm_tc16_port_with_ps; |
c19bc088 MD |
1594 | |
1595 | /* Print exactly as the port itself would */ | |
1596 | ||
1597 | static int | |
e841c3e0 | 1598 | port_with_ps_print (SCM obj, SCM port, scm_print_state *pstate) |
c19bc088 MD |
1599 | { |
1600 | obj = SCM_PORT_WITH_PS_PORT (obj); | |
1601 | return scm_ptobs[SCM_PTOBNUM (obj)].print (obj, port, pstate); | |
1602 | } | |
c4f37e80 MV |
1603 | |
1604 | SCM | |
1bbd0b84 | 1605 | scm_printer_apply (SCM proc, SCM exp, SCM port, scm_print_state *pstate) |
c4f37e80 | 1606 | { |
bb35f315 | 1607 | pstate->revealed = 1; |
dfd03fb9 MD |
1608 | return scm_call_2 (proc, exp, |
1609 | scm_i_port_with_print_state (port, pstate->handle)); | |
c19bc088 MD |
1610 | } |
1611 | ||
dfd03fb9 | 1612 | SCM_DEFINE (scm_port_with_print_state, "port-with-print-state", 1, 1, 0, |
1bbd0b84 | 1613 | (SCM port, SCM pstate), |
71331188 | 1614 | "Create a new port which behaves like @var{port}, but with an\n" |
dfd03fb9 MD |
1615 | "included print state @var{pstate}. @var{pstate} is optional.\n" |
1616 | "If @var{pstate} isn't supplied and @var{port} already has\n" | |
1617 | "a print state, the old print state is reused.") | |
1bbd0b84 | 1618 | #define FUNC_NAME s_scm_port_with_print_state |
c19bc088 | 1619 | { |
34d19ef6 | 1620 | SCM_VALIDATE_OPORT_VALUE (1, port); |
dfd03fb9 MD |
1621 | if (!SCM_UNBNDP (pstate)) |
1622 | SCM_VALIDATE_PRINTSTATE (2, pstate); | |
1623 | return scm_i_port_with_print_state (port, pstate); | |
c19bc088 | 1624 | } |
1bbd0b84 | 1625 | #undef FUNC_NAME |
c19bc088 | 1626 | |
a1ec6916 | 1627 | SCM_DEFINE (scm_get_print_state, "get-print-state", 1, 0, 0, |
1bbd0b84 | 1628 | (SCM port), |
71331188 MG |
1629 | "Return the print state of the port @var{port}. If @var{port}\n" |
1630 | "has no associated print state, @code{#f} is returned.") | |
1bbd0b84 | 1631 | #define FUNC_NAME s_scm_get_print_state |
c19bc088 | 1632 | { |
368cf54d GB |
1633 | if (SCM_PORT_WITH_PS_P (port)) |
1634 | return SCM_PORT_WITH_PS_PS (port); | |
f5f2dcff | 1635 | if (SCM_OUTPUT_PORT_P (port)) |
368cf54d | 1636 | return SCM_BOOL_F; |
276dd677 | 1637 | SCM_WRONG_TYPE_ARG (1, port); |
c4f37e80 | 1638 | } |
1bbd0b84 | 1639 | #undef FUNC_NAME |
bb35f315 | 1640 | |
c4f37e80 | 1641 | \f |
1cc91f1b | 1642 | |
0f2d19dd JB |
1643 | void |
1644 | scm_init_print () | |
0f2d19dd | 1645 | { |
66b1dbf6 | 1646 | SCM type; |
d5cf5324 | 1647 | |
d5cf5324 DH |
1648 | scm_gc_register_root (&print_state_pool); |
1649 | scm_gc_register_root (&scm_print_state_vtable); | |
66b1dbf6 AW |
1650 | type = scm_make_vtable (scm_from_locale_string (SCM_PRINT_STATE_LAYOUT), |
1651 | SCM_BOOL_F); | |
4a655e50 | 1652 | scm_set_struct_vtable_name_x (type, scm_from_latin1_symbol ("print-state")); |
bb35f315 | 1653 | scm_print_state_vtable = type; |
c4f37e80 | 1654 | |
c19bc088 MD |
1655 | /* Don't want to bind a wrapper class in GOOPS, so pass 0 as arg1. */ |
1656 | scm_tc16_port_with_ps = scm_make_smob_type (0, 0); | |
e841c3e0 | 1657 | scm_set_smob_print (scm_tc16_port_with_ps, port_with_ps_print); |
81ae25da | 1658 | |
a0599745 | 1659 | #include "libguile/print.x" |
475fa9a5 | 1660 | |
8500b186 AW |
1661 | scm_init_opts (scm_print_options, scm_print_opts); |
1662 | scm_print_opts[SCM_PRINT_HIGHLIGHT_PREFIX_I].val = | |
1663 | SCM_UNPACK (scm_from_locale_string ("{")); | |
1664 | scm_print_opts[SCM_PRINT_HIGHLIGHT_SUFFIX_I].val = | |
1665 | SCM_UNPACK (scm_from_locale_string ("}")); | |
475fa9a5 | 1666 | scm_print_opts[SCM_PRINT_KEYWORD_STYLE_I].val = SCM_UNPACK (sym_reader); |
0f2d19dd | 1667 | } |
89e00824 ML |
1668 | |
1669 | /* | |
1670 | Local Variables: | |
1671 | c-file-style: "gnu" | |
1672 | End: | |
1673 | */ |