Commit | Line | Data |
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f4bc4e59 | 1 | /* Copyright (C) 1995-1999, 2000, 2001, 2002, 2003, 2004, 2006, 2008, |
88c0a1d5 | 2 | * 2009, 2010, 2011, 2012 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> |
e6e2e95a | 33 | |
a0599745 MD |
34 | #include "libguile/_scm.h" |
35 | #include "libguile/chars.h" | |
a002f1a2 | 36 | #include "libguile/continuations.h" |
a0599745 | 37 | #include "libguile/smob.h" |
bbb2ecd1 | 38 | #include "libguile/control.h" |
a0599745 MD |
39 | #include "libguile/eval.h" |
40 | #include "libguile/macros.h" | |
41 | #include "libguile/procprop.h" | |
42 | #include "libguile/read.h" | |
43 | #include "libguile/weaks.h" | |
2fb924f6 | 44 | #include "libguile/programs.h" |
a0599745 MD |
45 | #include "libguile/alist.h" |
46 | #include "libguile/struct.h" | |
a0599745 MD |
47 | #include "libguile/ports.h" |
48 | #include "libguile/root.h" | |
49 | #include "libguile/strings.h" | |
50 | #include "libguile/strports.h" | |
51 | #include "libguile/vectors.h" | |
327967ef | 52 | #include "libguile/numbers.h" |
6f3b0cc2 | 53 | #include "libguile/vm.h" |
a0599745 MD |
54 | |
55 | #include "libguile/validate.h" | |
56 | #include "libguile/print.h" | |
22fc179a HWN |
57 | |
58 | #include "libguile/private-options.h" | |
59 | ||
0f2d19dd JB |
60 | \f |
61 | ||
07f49ac7 LC |
62 | /* Character printers. */ |
63 | ||
f4bc4e59 LC |
64 | static size_t display_string (const void *, int, size_t, SCM, |
65 | scm_t_string_failed_conversion_handler); | |
66 | ||
07f49ac7 LC |
67 | static int display_character (scm_t_wchar, SCM, |
68 | scm_t_string_failed_conversion_handler); | |
f4bc4e59 | 69 | |
07f49ac7 LC |
70 | static void write_character (scm_t_wchar, SCM, int); |
71 | ||
f4bc4e59 LC |
72 | static void write_character_escaped (scm_t_wchar, int, SCM); |
73 | ||
07f49ac7 LC |
74 | \f |
75 | ||
0f2d19dd JB |
76 | /* {Names of immediate symbols} |
77 | * | |
78 | * This table must agree with the declarations in scm.h: {Immediate Symbols}. | |
79 | */ | |
80 | ||
e17d318f DH |
81 | /* This table must agree with the list of flags in tags.h. */ |
82 | static const char *iflagnames[] = | |
83 | { | |
84 | "#f", | |
45f4cbdf MW |
85 | "#nil", /* Elisp nil value. Should print from elisp as symbol `nil'. */ |
86 | "#<XXX UNUSED LISP FALSE -- DO NOT USE -- SHOULD NEVER BE SEEN XXX>", | |
87 | "()", | |
e17d318f | 88 | "#t", |
f60c2c4e MW |
89 | "#<XXX UNUSED BOOLEAN 0 -- DO NOT USE -- SHOULD NEVER BE SEEN XXX>", |
90 | "#<XXX UNUSED BOOLEAN 1 -- DO NOT USE -- SHOULD NEVER BE SEEN XXX>", | |
91 | "#<XXX UNUSED BOOLEAN 2 -- DO NOT USE -- SHOULD NEVER BE SEEN XXX>", | |
45f4cbdf | 92 | "#<unspecified>", |
e17d318f DH |
93 | "#<undefined>", |
94 | "#<eof>", | |
e17d318f DH |
95 | |
96 | /* Unbound slot marker for GOOPS. For internal use in GOOPS only. */ | |
97 | "#<unbound>", | |
e17d318f DH |
98 | }; |
99 | ||
475fa9a5 MV |
100 | SCM_SYMBOL (sym_reader, "reader"); |
101 | ||
92c2555f | 102 | scm_t_option scm_print_opts[] = { |
210c0325 | 103 | { SCM_OPTION_SCM, "highlight-prefix", (scm_t_bits)SCM_BOOL_F_BITS, |
81ae25da | 104 | "The string to print before highlighted values." }, |
210c0325 | 105 | { SCM_OPTION_SCM, "highlight-suffix", (scm_t_bits)SCM_BOOL_F_BITS, |
475fa9a5 | 106 | "The string to print after highlighted values." }, |
210c0325 | 107 | { SCM_OPTION_SCM, "quote-keywordish-symbols", (scm_t_bits)SCM_BOOL_F_BITS, |
475fa9a5 MV |
108 | "How to print symbols that have a colon as their first or last character. " |
109 | "The value '#f' does not quote the colons; '#t' quotes them; " | |
8500b186 AW |
110 | "'reader' quotes them when the reader option 'keywords' is not '#f'." }, |
111 | { SCM_OPTION_BOOLEAN, "escape-newlines", 1, | |
112 | "Render newlines as \\n when printing using `write'." }, | |
62560650 | 113 | { 0 }, |
e6e4c9af MD |
114 | }; |
115 | ||
a1ec6916 | 116 | SCM_DEFINE (scm_print_options, "print-options-interface", 0, 1, 0, |
1bbd0b84 | 117 | (SCM setting), |
71331188 | 118 | "Option interface for the print options. Instead of using\n" |
1dd05fd8 MG |
119 | "this procedure directly, use the procedures\n" |
120 | "@code{print-enable}, @code{print-disable}, @code{print-set!}\n" | |
121 | "and @code{print-options}.") | |
1bbd0b84 | 122 | #define FUNC_NAME s_scm_print_options |
e6e4c9af | 123 | { |
a51ea417 | 124 | SCM ans = scm_options (setting, |
b7ff98dd | 125 | scm_print_opts, |
1bbd0b84 | 126 | FUNC_NAME); |
e6e4c9af MD |
127 | return ans; |
128 | } | |
1bbd0b84 | 129 | #undef FUNC_NAME |
e6e4c9af | 130 | |
0f2d19dd JB |
131 | \f |
132 | /* {Printing of Scheme Objects} | |
133 | */ | |
134 | ||
a51ea417 | 135 | /* Detection of circular references. |
c62fbfe1 MD |
136 | * |
137 | * Due to other constraints in the implementation, this code has bad | |
5d46ebe3 MD |
138 | * time complexity (O (depth * N)), The printer code can be |
139 | * rewritten to be O(N). | |
a51ea417 | 140 | */ |
dbb5de29 NJ |
141 | #define PUSH_REF(pstate, obj) \ |
142 | do \ | |
143 | { \ | |
144 | PSTATE_STACK_SET (pstate, pstate->top, obj); \ | |
145 | pstate->top++; \ | |
146 | if (pstate->top == pstate->ceiling) \ | |
147 | grow_ref_stack (pstate); \ | |
1bbd0b84 | 148 | } while(0) |
a51ea417 | 149 | |
dbb5de29 NJ |
150 | #define ENTER_NESTED_DATA(pstate, obj, label) \ |
151 | do \ | |
152 | { \ | |
153 | register unsigned long i; \ | |
154 | for (i = 0; i < pstate->top; ++i) \ | |
155 | if (scm_is_eq (PSTATE_STACK_REF (pstate, i), (obj))) \ | |
156 | goto label; \ | |
157 | if (pstate->fancyp) \ | |
158 | { \ | |
159 | if (pstate->top - pstate->list_offset >= pstate->level) \ | |
160 | { \ | |
161 | scm_putc ('#', port); \ | |
162 | return; \ | |
163 | } \ | |
164 | } \ | |
165 | PUSH_REF(pstate, obj); \ | |
1bbd0b84 | 166 | } while(0) |
a51ea417 | 167 | |
dbb5de29 NJ |
168 | #define EXIT_NESTED_DATA(pstate) \ |
169 | do \ | |
170 | { \ | |
171 | --pstate->top; \ | |
172 | PSTATE_STACK_SET (pstate, pstate->top, SCM_UNDEFINED); \ | |
173 | } \ | |
174 | while (0) | |
c62fbfe1 | 175 | |
d5cf5324 DH |
176 | SCM scm_print_state_vtable = SCM_BOOL_F; |
177 | static SCM print_state_pool = SCM_EOL; | |
9de87eea | 178 | scm_i_pthread_mutex_t print_state_mutex = SCM_I_PTHREAD_MUTEX_INITIALIZER; |
c4f37e80 | 179 | |
f843a84c | 180 | #ifdef GUILE_DEBUG /* Used for debugging purposes */ |
1cc91f1b | 181 | |
3b3b36dd | 182 | SCM_DEFINE (scm_current_pstate, "current-pstate", 0, 0, 0, |
1bbd0b84 | 183 | (), |
d5cf5324 | 184 | "Return the current-pstate -- the car of the\n" |
5352393c MG |
185 | "@code{print_state_pool}. @code{current-pstate} is only\n" |
186 | "included in @code{--enable-guile-debug} builds.") | |
1bbd0b84 | 187 | #define FUNC_NAME s_scm_current_pstate |
c62fbfe1 | 188 | { |
d2e53ed6 | 189 | if (!scm_is_null (print_state_pool)) |
d5cf5324 | 190 | return SCM_CAR (print_state_pool); |
a0adfbf0 | 191 | else |
0a284a4e | 192 | return SCM_BOOL_F; |
c62fbfe1 | 193 | } |
1bbd0b84 GB |
194 | #undef FUNC_NAME |
195 | ||
c62fbfe1 MD |
196 | #endif |
197 | ||
198 | #define PSTATE_SIZE 50L | |
199 | ||
698c0295 | 200 | static SCM |
1bbd0b84 | 201 | make_print_state (void) |
698c0295 | 202 | { |
d5cf5324 DH |
203 | SCM print_state |
204 | = scm_make_struct (scm_print_state_vtable, SCM_INUM0, SCM_EOL); | |
bf685b6d | 205 | scm_print_state *pstate = SCM_PRINT_STATE (print_state); |
00ffa0e7 | 206 | pstate->ref_vect = scm_c_make_vector (PSTATE_SIZE, SCM_UNDEFINED); |
4057a3e0 | 207 | pstate->ceiling = SCM_SIMPLE_VECTOR_LENGTH (pstate->ref_vect); |
d232520a | 208 | pstate->highlight_objects = SCM_EOL; |
698c0295 MD |
209 | return print_state; |
210 | } | |
1cc91f1b | 211 | |
c62fbfe1 MD |
212 | SCM |
213 | scm_make_print_state () | |
c62fbfe1 | 214 | { |
230d095f | 215 | SCM answer = SCM_BOOL_F; |
698c0295 MD |
216 | |
217 | /* First try to allocate a print state from the pool */ | |
9de87eea | 218 | scm_i_pthread_mutex_lock (&print_state_mutex); |
d2e53ed6 | 219 | if (!scm_is_null (print_state_pool)) |
698c0295 | 220 | { |
d5cf5324 DH |
221 | answer = SCM_CAR (print_state_pool); |
222 | print_state_pool = SCM_CDR (print_state_pool); | |
698c0295 | 223 | } |
9de87eea | 224 | scm_i_pthread_mutex_unlock (&print_state_mutex); |
698c0295 | 225 | |
7888309b | 226 | return scm_is_false (answer) ? make_print_state () : answer; |
c62fbfe1 | 227 | } |
a51ea417 | 228 | |
698c0295 | 229 | void |
6e8d25a6 | 230 | scm_free_print_state (SCM print_state) |
698c0295 MD |
231 | { |
232 | SCM handle; | |
233 | scm_print_state *pstate = SCM_PRINT_STATE (print_state); | |
234 | /* Cleanup before returning print state to pool. | |
235 | * It is better to do it here. Doing it in scm_prin1 | |
236 | * would cost more since that function is called much more | |
237 | * often. | |
238 | */ | |
239 | pstate->fancyp = 0; | |
bb35f315 | 240 | pstate->revealed = 0; |
d232520a | 241 | pstate->highlight_objects = SCM_EOL; |
9de87eea | 242 | scm_i_pthread_mutex_lock (&print_state_mutex); |
16d4699b | 243 | handle = scm_cons (print_state, print_state_pool); |
d5cf5324 | 244 | print_state_pool = handle; |
9de87eea | 245 | scm_i_pthread_mutex_unlock (&print_state_mutex); |
dfd03fb9 MD |
246 | } |
247 | ||
248 | SCM | |
249 | scm_i_port_with_print_state (SCM port, SCM print_state) | |
250 | { | |
251 | if (SCM_UNBNDP (print_state)) | |
252 | { | |
253 | if (SCM_PORT_WITH_PS_P (port)) | |
254 | return port; | |
255 | else | |
256 | print_state = scm_make_print_state (); | |
257 | /* port does not need to be coerced since it doesn't have ps */ | |
258 | } | |
259 | else | |
260 | port = SCM_COERCE_OUTPORT (port); | |
261 | SCM_RETURN_NEWSMOB (scm_tc16_port_with_ps, | |
262 | SCM_UNPACK (scm_cons (port, print_state))); | |
698c0295 | 263 | } |
1cc91f1b | 264 | |
a51ea417 | 265 | static void |
1bbd0b84 | 266 | grow_ref_stack (scm_print_state *pstate) |
a51ea417 | 267 | { |
4057a3e0 MV |
268 | SCM old_vect = pstate->ref_vect; |
269 | size_t old_size = SCM_SIMPLE_VECTOR_LENGTH (old_vect); | |
270 | size_t new_size = 2 * pstate->ceiling; | |
00ffa0e7 | 271 | SCM new_vect = scm_c_make_vector (new_size, SCM_UNDEFINED); |
b17004b8 DH |
272 | unsigned long int i; |
273 | ||
274 | for (i = 0; i != old_size; ++i) | |
4057a3e0 | 275 | SCM_SIMPLE_VECTOR_SET (new_vect, i, SCM_SIMPLE_VECTOR_REF (old_vect, i)); |
b17004b8 DH |
276 | |
277 | pstate->ref_vect = new_vect; | |
bf685b6d | 278 | pstate->ceiling = new_size; |
a51ea417 MD |
279 | } |
280 | ||
509759dd MV |
281 | #define PSTATE_STACK_REF(p,i) SCM_SIMPLE_VECTOR_REF((p)->ref_vect, (i)) |
282 | #define PSTATE_STACK_SET(p,i,v) SCM_SIMPLE_VECTOR_SET((p)->ref_vect, (i), (v)) | |
1cc91f1b | 283 | |
a51ea417 | 284 | static void |
34d19ef6 | 285 | print_circref (SCM port, scm_print_state *pstate, SCM ref) |
a51ea417 | 286 | { |
c014a02e ML |
287 | register long i; |
288 | long self = pstate->top - 1; | |
c62fbfe1 | 289 | i = pstate->top - 1; |
509759dd | 290 | if (scm_is_pair (PSTATE_STACK_REF (pstate, i))) |
c62fbfe1 MD |
291 | { |
292 | while (i > 0) | |
293 | { | |
509759dd MV |
294 | if (!scm_is_pair (PSTATE_STACK_REF (pstate, i-1)) |
295 | || !scm_is_eq (SCM_CDR (PSTATE_STACK_REF (pstate, i-1)), | |
296 | SCM_CDR (PSTATE_STACK_REF (pstate, i)))) | |
c62fbfe1 MD |
297 | break; |
298 | --i; | |
299 | } | |
300 | self = i; | |
301 | } | |
302 | for (i = pstate->top - 1; 1; --i) | |
509759dd | 303 | if (scm_is_eq (PSTATE_STACK_REF(pstate, i), ref)) |
c62fbfe1 | 304 | break; |
b7f3516f | 305 | scm_putc ('#', port); |
c62fbfe1 | 306 | scm_intprint (i - self, 10, port); |
b7f3516f | 307 | scm_putc ('#', port); |
a51ea417 MD |
308 | } |
309 | ||
6662998f MV |
310 | /* Print the name of a symbol. */ |
311 | ||
475fa9a5 | 312 | static int |
15671c6e | 313 | quote_keywordish_symbols (void) |
475fa9a5 | 314 | { |
15671c6e | 315 | SCM option = SCM_PRINT_KEYWORD_STYLE; |
475fa9a5 | 316 | |
475fa9a5 MV |
317 | if (scm_is_false (option)) |
318 | return 0; | |
319 | if (scm_is_eq (option, sym_reader)) | |
320 | return scm_is_true (SCM_PACK (SCM_KEYWORD_STYLE)); | |
321 | return 1; | |
322 | } | |
323 | ||
2e9fc9fc AW |
324 | #define INITIAL_IDENTIFIER_MASK \ |
325 | (UC_CATEGORY_MASK_Lu | UC_CATEGORY_MASK_Ll | UC_CATEGORY_MASK_Lt \ | |
326 | | UC_CATEGORY_MASK_Lm | UC_CATEGORY_MASK_Lo | UC_CATEGORY_MASK_Mn \ | |
327 | | UC_CATEGORY_MASK_Nl | UC_CATEGORY_MASK_No | UC_CATEGORY_MASK_Pd \ | |
328 | | UC_CATEGORY_MASK_Pc | UC_CATEGORY_MASK_Po | UC_CATEGORY_MASK_Sc \ | |
329 | | UC_CATEGORY_MASK_Sm | UC_CATEGORY_MASK_Sk | UC_CATEGORY_MASK_So \ | |
330 | | UC_CATEGORY_MASK_Co) | |
331 | ||
332 | #define SUBSEQUENT_IDENTIFIER_MASK \ | |
333 | (INITIAL_IDENTIFIER_MASK \ | |
334 | | UC_CATEGORY_MASK_Nd | UC_CATEGORY_MASK_Mc | UC_CATEGORY_MASK_Me) | |
335 | ||
15671c6e AW |
336 | static int |
337 | symbol_has_extended_read_syntax (SCM sym) | |
6662998f | 338 | { |
15671c6e AW |
339 | size_t pos, len = scm_i_symbol_length (sym); |
340 | scm_t_wchar c; | |
341 | ||
342 | /* The empty symbol. */ | |
343 | if (len == 0) | |
344 | return 1; | |
345 | ||
346 | c = scm_i_symbol_ref (sym, 0); | |
347 | ||
348 | /* Single dot; conflicts with dotted-pair notation. */ | |
349 | if (len == 1 && c == '.') | |
350 | return 1; | |
351 | ||
352 | /* Other initial-character constraints. */ | |
2e9fc9fc | 353 | if (c == '\'' || c == '`' || c == ',' || c == '"' || c == ';' || c == '#') |
15671c6e AW |
354 | return 1; |
355 | ||
356 | /* Keywords can be identified by trailing colons too. */ | |
357 | if (c == ':' || scm_i_symbol_ref (sym, len - 1) == ':') | |
358 | return quote_keywordish_symbols (); | |
359 | ||
360 | /* Number-ish symbols. */ | |
361 | if (scm_is_true (scm_i_string_to_number (scm_symbol_to_string (sym), 10))) | |
362 | return 1; | |
363 | ||
2e9fc9fc AW |
364 | /* Other disallowed first characters. */ |
365 | if (!uc_is_general_category_withtable (c, INITIAL_IDENTIFIER_MASK)) | |
366 | return 1; | |
367 | ||
368 | /* Otherwise, any character that's in the identifier category mask is | |
369 | fine to pass through as-is, provided it's not one of the ASCII | |
370 | delimiters like `;'. */ | |
371 | for (pos = 1; pos < len; pos++) | |
6662998f | 372 | { |
2e9fc9fc AW |
373 | c = scm_i_symbol_ref (sym, pos); |
374 | if (!uc_is_general_category_withtable (c, SUBSEQUENT_IDENTIFIER_MASK)) | |
375 | return 1; | |
376 | else if (c == '"' || c == ';' || c == '#') | |
377 | return 1; | |
6662998f | 378 | } |
c6b49e89 | 379 | |
15671c6e AW |
380 | return 0; |
381 | } | |
382 | ||
383 | static void | |
384 | print_normal_symbol (SCM sym, SCM port) | |
385 | { | |
386 | scm_display (scm_symbol_to_string (sym), port); | |
387 | } | |
388 | ||
15671c6e AW |
389 | static void |
390 | print_extended_symbol (SCM sym, SCM port) | |
391 | { | |
392 | size_t pos, len; | |
393 | scm_t_string_failed_conversion_handler strategy; | |
394 | ||
395 | len = scm_i_symbol_length (sym); | |
396 | strategy = scm_i_get_conversion_strategy (port); | |
397 | ||
398 | scm_lfwrite ("#{", 2, port); | |
399 | ||
400 | for (pos = 0; pos < len; pos++) | |
401 | { | |
402 | scm_t_wchar c = scm_i_symbol_ref (sym, pos); | |
403 | ||
2e9fc9fc AW |
404 | if (uc_is_general_category_withtable (c, |
405 | SUBSEQUENT_IDENTIFIER_MASK | |
406 | | UC_CATEGORY_MASK_Zs)) | |
15671c6e | 407 | { |
15671c6e AW |
408 | if (!display_character (c, port, strategy)) |
409 | scm_encoding_error ("print_extended_symbol", errno, | |
410 | "cannot convert to output locale", | |
411 | port, SCM_MAKE_CHAR (c)); | |
2e9fc9fc AW |
412 | } |
413 | else | |
414 | { | |
415 | display_string ("\\x", 1, 2, port, iconveh_question_mark); | |
416 | scm_intprint (c, 16, port); | |
417 | display_character (';', port, iconveh_question_mark); | |
15671c6e AW |
418 | } |
419 | } | |
420 | ||
421 | scm_lfwrite ("}#", 2, port); | |
422 | } | |
423 | ||
424 | /* FIXME: allow R6RS hex escapes instead of #{...}#. */ | |
425 | void | |
426 | scm_i_print_symbol_name (SCM sym, SCM port) | |
427 | { | |
428 | if (symbol_has_extended_read_syntax (sym)) | |
429 | print_extended_symbol (sym, port); | |
430 | else | |
431 | print_normal_symbol (sym, port); | |
6662998f MV |
432 | } |
433 | ||
e23106d5 MG |
434 | void |
435 | scm_print_symbol_name (const char *str, size_t len, SCM port) | |
436 | { | |
437 | SCM symbol = scm_from_locale_symboln (str, len); | |
ab33782c | 438 | scm_i_print_symbol_name (symbol, port); |
e23106d5 MG |
439 | } |
440 | ||
c62fbfe1 | 441 | /* Print generally. Handles both write and display according to PSTATE. |
0f2d19dd | 442 | */ |
8b840115 MD |
443 | SCM_GPROC(s_write, "write", 1, 1, 0, scm_write, g_write); |
444 | SCM_GPROC(s_display, "display", 1, 1, 0, scm_display, g_display); | |
1cc91f1b | 445 | |
d232520a MV |
446 | static void iprin1 (SCM exp, SCM port, scm_print_state *pstate); |
447 | ||
dea901d6 MG |
448 | |
449 | /* Print a character as an octal or hex escape. */ | |
450 | #define PRINT_CHAR_ESCAPE(i, port) \ | |
451 | do \ | |
452 | { \ | |
453 | if (!SCM_R6RS_ESCAPES_P) \ | |
454 | scm_intprint (i, 8, port); \ | |
455 | else \ | |
456 | { \ | |
457 | scm_puts ("x", port); \ | |
458 | scm_intprint (i, 16, port); \ | |
459 | } \ | |
460 | } \ | |
461 | while (0) | |
462 | ||
463 | ||
0f2d19dd | 464 | void |
1bbd0b84 | 465 | scm_iprin1 (SCM exp, SCM port, scm_print_state *pstate) |
d232520a MV |
466 | { |
467 | if (pstate->fancyp | |
468 | && scm_is_true (scm_memq (exp, pstate->highlight_objects))) | |
469 | { | |
81ae25da | 470 | scm_display (SCM_PRINT_HIGHLIGHT_PREFIX, port); |
d232520a | 471 | iprin1 (exp, port, pstate); |
81ae25da | 472 | scm_display (SCM_PRINT_HIGHLIGHT_SUFFIX, port); |
d232520a MV |
473 | } |
474 | else | |
475 | iprin1 (exp, port, pstate); | |
476 | } | |
477 | ||
478 | static void | |
479 | iprin1 (SCM exp, SCM port, scm_print_state *pstate) | |
0f2d19dd | 480 | { |
54778cd3 | 481 | switch (SCM_ITAG3 (exp)) |
0f2d19dd | 482 | { |
e34f941a DH |
483 | case scm_tc3_tc7_1: |
484 | case scm_tc3_tc7_2: | |
485 | /* These tc3 tags should never occur in an immediate value. They are | |
486 | * only used in cell types of non-immediates, i. e. the value returned | |
487 | * by SCM_CELL_TYPE (exp) can use these tags. | |
488 | */ | |
489 | scm_ipruk ("immediate", exp, port); | |
490 | break; | |
491 | case scm_tc3_int_1: | |
492 | case scm_tc3_int_2: | |
e11e83f3 | 493 | scm_intprint (SCM_I_INUM (exp), 10, port); |
0f2d19dd | 494 | break; |
e34f941a | 495 | case scm_tc3_imm24: |
7866a09b | 496 | if (SCM_CHARP (exp)) |
0f2d19dd | 497 | { |
b7f3516f | 498 | if (SCM_WRITINGP (pstate)) |
07f49ac7 LC |
499 | write_character (SCM_CHAR (exp), port, 0); |
500 | else | |
b7f3516f | 501 | { |
07f49ac7 LC |
502 | if (!display_character (SCM_CHAR (exp), port, |
503 | scm_i_get_conversion_strategy (port))) | |
504 | scm_encoding_error (__func__, errno, | |
505 | "cannot convert to output locale", | |
6851d3be | 506 | port, exp); |
b7f3516f | 507 | } |
0f2d19dd | 508 | } |
a51ea417 | 509 | else if (SCM_IFLAGP (exp) |
e17d318f DH |
510 | && ((size_t) SCM_IFLAGNUM (exp) < (sizeof iflagnames / sizeof (char *)))) |
511 | { | |
512 | scm_puts (iflagnames [SCM_IFLAGNUM (exp)], port); | |
513 | } | |
0f2d19dd | 514 | else |
e34f941a DH |
515 | { |
516 | /* unknown immediate value */ | |
517 | scm_ipruk ("immediate", exp, port); | |
518 | } | |
0f2d19dd | 519 | break; |
e34f941a | 520 | case scm_tc3_cons: |
0f2d19dd JB |
521 | switch (SCM_TYP7 (exp)) |
522 | { | |
904a077d MV |
523 | case scm_tcs_struct: |
524 | { | |
525 | ENTER_NESTED_DATA (pstate, exp, circref); | |
526 | if (SCM_OBJ_CLASS_FLAGS (exp) & SCM_CLASSF_GOOPS) | |
527 | { | |
528 | SCM pwps, print = pstate->writingp ? g_write : g_display; | |
b2b33168 | 529 | if (SCM_UNPACK (print) == 0) |
904a077d | 530 | goto print_struct; |
dfd03fb9 | 531 | pwps = scm_i_port_with_print_state (port, pstate->handle); |
7663c008 | 532 | pstate->revealed = 1; |
904a077d MV |
533 | scm_call_generic_2 (print, exp, pwps); |
534 | } | |
535 | else | |
536 | { | |
537 | print_struct: | |
538 | scm_print_struct (exp, port, pstate); | |
539 | } | |
540 | EXIT_NESTED_DATA (pstate); | |
541 | } | |
542 | break; | |
0f2d19dd JB |
543 | case scm_tcs_cons_imcar: |
544 | case scm_tcs_cons_nimcar: | |
c62fbfe1 MD |
545 | ENTER_NESTED_DATA (pstate, exp, circref); |
546 | scm_iprlist ("(", exp, ')', port, pstate); | |
547 | EXIT_NESTED_DATA (pstate); | |
a51ea417 MD |
548 | break; |
549 | circref: | |
c62fbfe1 | 550 | print_circref (port, pstate, exp); |
0f2d19dd | 551 | break; |
534c55a9 DH |
552 | case scm_tc7_number: |
553 | switch SCM_TYP16 (exp) { | |
554 | case scm_tc16_big: | |
555 | scm_bigprint (exp, port, pstate); | |
556 | break; | |
557 | case scm_tc16_real: | |
558 | scm_print_real (exp, port, pstate); | |
559 | break; | |
560 | case scm_tc16_complex: | |
561 | scm_print_complex (exp, port, pstate); | |
562 | break; | |
f92e85f7 MV |
563 | case scm_tc16_fraction: |
564 | scm_i_print_fraction (exp, port, pstate); | |
565 | break; | |
534c55a9 DH |
566 | } |
567 | break; | |
9c44cd45 MG |
568 | case scm_tc7_string: |
569 | if (SCM_WRITINGP (pstate)) | |
570 | { | |
07f49ac7 | 571 | size_t len, i; |
9c44cd45 | 572 | |
f4bc4e59 | 573 | display_character ('"', port, iconveh_question_mark); |
9c44cd45 MG |
574 | len = scm_i_string_length (exp); |
575 | for (i = 0; i < len; ++i) | |
07f49ac7 LC |
576 | write_character (scm_i_string_ref (exp, i), port, 1); |
577 | ||
f4bc4e59 | 578 | display_character ('"', port, iconveh_question_mark); |
9c44cd45 MG |
579 | scm_remember_upto_here_1 (exp); |
580 | } | |
581 | else | |
f4bc4e59 LC |
582 | { |
583 | size_t len, printed; | |
584 | ||
585 | len = scm_i_string_length (exp); | |
586 | printed = display_string (scm_i_string_data (exp), | |
587 | scm_i_is_narrow_string (exp), | |
588 | len, port, | |
589 | scm_i_get_conversion_strategy (port)); | |
590 | if (SCM_UNLIKELY (printed < len)) | |
f4bc4e59 LC |
591 | scm_encoding_error (__func__, errno, |
592 | "cannot convert to output locale", | |
6851d3be | 593 | port, scm_c_string_ref (exp, printed)); |
f4bc4e59 LC |
594 | } |
595 | ||
9c44cd45 MG |
596 | scm_remember_upto_here_1 (exp); |
597 | break; | |
28b06554 | 598 | case scm_tc7_symbol: |
cc95e00a | 599 | if (scm_i_symbol_is_interned (exp)) |
9ff28a13 | 600 | { |
e23106d5 | 601 | scm_i_print_symbol_name (exp, port); |
9ff28a13 MV |
602 | scm_remember_upto_here_1 (exp); |
603 | } | |
604 | else | |
605 | { | |
606 | scm_puts ("#<uninterned-symbol ", port); | |
e23106d5 | 607 | scm_i_print_symbol_name (exp, port); |
9ff28a13 | 608 | scm_putc (' ', port); |
0345e278 | 609 | scm_uintprint (SCM_UNPACK (exp), 16, port); |
9ff28a13 MV |
610 | scm_putc ('>', port); |
611 | } | |
6662998f | 612 | break; |
e5aca4b5 MV |
613 | case scm_tc7_variable: |
614 | scm_i_variable_print (exp, port, pstate); | |
615 | break; | |
2fb924f6 AW |
616 | case scm_tc7_program: |
617 | scm_i_program_print (exp, port, pstate); | |
618 | break; | |
5b46a8c2 LC |
619 | case scm_tc7_pointer: |
620 | scm_i_pointer_print (exp, port, pstate); | |
e2c2a699 | 621 | break; |
c99de5aa AW |
622 | case scm_tc7_hashtable: |
623 | scm_i_hashtable_print (exp, port, pstate); | |
624 | break; | |
9ea31741 AW |
625 | case scm_tc7_fluid: |
626 | scm_i_fluid_print (exp, port, pstate); | |
627 | break; | |
45cf2428 AW |
628 | case scm_tc7_dynamic_state: |
629 | scm_i_dynamic_state_print (exp, port, pstate); | |
630 | break; | |
6f3b0cc2 AW |
631 | case scm_tc7_frame: |
632 | scm_i_frame_print (exp, port, pstate); | |
633 | break; | |
634 | case scm_tc7_objcode: | |
635 | scm_i_objcode_print (exp, port, pstate); | |
636 | break; | |
637 | case scm_tc7_vm: | |
638 | scm_i_vm_print (exp, port, pstate); | |
639 | break; | |
640 | case scm_tc7_vm_cont: | |
641 | scm_i_vm_cont_print (exp, port, pstate); | |
642 | break; | |
bbb2ecd1 AW |
643 | case scm_tc7_prompt: |
644 | scm_i_prompt_print (exp, port, pstate); | |
645 | break; | |
646 | case scm_tc7_with_fluids: | |
647 | scm_i_with_fluids_print (exp, port, pstate); | |
648 | break; | |
b2637c98 AW |
649 | case scm_tc7_array: |
650 | ENTER_NESTED_DATA (pstate, exp, circref); | |
651 | scm_i_print_array (exp, port, pstate); | |
88c0a1d5 | 652 | EXIT_NESTED_DATA (pstate); |
b2637c98 AW |
653 | break; |
654 | case scm_tc7_bytevector: | |
655 | scm_i_print_bytevector (exp, port, pstate); | |
656 | break; | |
ff1feca9 AW |
657 | case scm_tc7_bitvector: |
658 | scm_i_print_bitvector (exp, port, pstate); | |
659 | break; | |
0f2d19dd | 660 | case scm_tc7_wvect: |
c62fbfe1 | 661 | ENTER_NESTED_DATA (pstate, exp, circref); |
0f2d19dd | 662 | if (SCM_IS_WHVEC (exp)) |
b7f3516f | 663 | scm_puts ("#wh(", port); |
0f2d19dd | 664 | else |
b7f3516f | 665 | scm_puts ("#w(", port); |
0f2d19dd | 666 | goto common_vector_printer; |
0f2d19dd | 667 | case scm_tc7_vector: |
c62fbfe1 | 668 | ENTER_NESTED_DATA (pstate, exp, circref); |
b7f3516f | 669 | scm_puts ("#(", port); |
0f2d19dd | 670 | common_vector_printer: |
9fbaf27c | 671 | { |
c014a02e | 672 | register long i; |
4057a3e0 | 673 | long last = SCM_SIMPLE_VECTOR_LENGTH (exp) - 1; |
9fbaf27c | 674 | int cutp = 0; |
4057a3e0 MV |
675 | if (pstate->fancyp |
676 | && SCM_SIMPLE_VECTOR_LENGTH (exp) > pstate->length) | |
9fbaf27c MD |
677 | { |
678 | last = pstate->length - 1; | |
679 | cutp = 1; | |
680 | } | |
c367c4b4 | 681 | if (SCM_I_WVECTP (exp)) |
9fbaf27c | 682 | { |
c367c4b4 LC |
683 | /* Elements of weak vectors may not be accessed via the |
684 | `SIMPLE_VECTOR_REF ()' macro. */ | |
685 | for (i = 0; i < last; ++i) | |
686 | { | |
687 | scm_iprin1 (scm_c_vector_ref (exp, i), | |
688 | port, pstate); | |
689 | scm_putc (' ', port); | |
690 | } | |
9fbaf27c | 691 | } |
c367c4b4 LC |
692 | else |
693 | { | |
694 | for (i = 0; i < last; ++i) | |
695 | { | |
696 | scm_iprin1 (SCM_SIMPLE_VECTOR_REF (exp, i), port, pstate); | |
697 | scm_putc (' ', port); | |
698 | } | |
699 | } | |
700 | ||
9fbaf27c MD |
701 | if (i == last) |
702 | { | |
703 | /* CHECK_INTS; */ | |
c367c4b4 | 704 | scm_iprin1 (scm_c_vector_ref (exp, i), port, pstate); |
9fbaf27c MD |
705 | } |
706 | if (cutp) | |
b7f3516f TT |
707 | scm_puts (" ...", port); |
708 | scm_putc (')', port); | |
9fbaf27c | 709 | } |
c62fbfe1 | 710 | EXIT_NESTED_DATA (pstate); |
0f2d19dd | 711 | break; |
0f2d19dd | 712 | case scm_tc7_port: |
5ca6dc39 JB |
713 | { |
714 | register long i = SCM_PTOBNUM (exp); | |
715 | if (i < scm_numptob | |
716 | && scm_ptobs[i].print | |
717 | && (scm_ptobs[i].print) (exp, port, pstate)) | |
a51ea417 | 718 | break; |
5ca6dc39 JB |
719 | goto punk; |
720 | } | |
721 | case scm_tc7_smob: | |
7a7f7c53 DH |
722 | ENTER_NESTED_DATA (pstate, exp, circref); |
723 | SCM_SMOB_DESCRIPTOR (exp).print (exp, port, pstate); | |
724 | EXIT_NESTED_DATA (pstate); | |
725 | break; | |
0f2d19dd | 726 | default: |
314b8716 | 727 | /* case scm_tcs_closures: */ |
a51ea417 MD |
728 | punk: |
729 | scm_ipruk ("type", exp, port); | |
0f2d19dd JB |
730 | } |
731 | } | |
732 | } | |
733 | ||
c62fbfe1 MD |
734 | /* Print states are necessary for circular reference safe printing. |
735 | * They are also expensive to allocate. Therefore print states are | |
736 | * kept in a pool so that they can be reused. | |
737 | */ | |
1cc91f1b | 738 | |
bb35f315 MV |
739 | /* The PORT argument can also be a print-state/port pair, which will |
740 | * then be used instead of allocating a new print state. This is | |
741 | * useful for continuing a chain of print calls from Scheme. */ | |
742 | ||
a51ea417 | 743 | void |
1bbd0b84 | 744 | scm_prin1 (SCM exp, SCM port, int writingp) |
a51ea417 | 745 | { |
c4f37e80 MV |
746 | SCM handle = SCM_BOOL_F; /* Will GC protect the handle whilst unlinked */ |
747 | SCM pstate_scm; | |
c62fbfe1 | 748 | scm_print_state *pstate; |
15635be5 | 749 | int old_writingp; |
c62fbfe1 | 750 | |
bb35f315 MV |
751 | /* If PORT is a print-state/port pair, use that. Else create a new |
752 | print-state. */ | |
c4f37e80 | 753 | |
0c95b57d | 754 | if (SCM_PORT_WITH_PS_P (port)) |
bb35f315 | 755 | { |
52235e71 MD |
756 | pstate_scm = SCM_PORT_WITH_PS_PS (port); |
757 | port = SCM_PORT_WITH_PS_PORT (port); | |
bb35f315 MV |
758 | } |
759 | else | |
c62fbfe1 | 760 | { |
c4f37e80 | 761 | /* First try to allocate a print state from the pool */ |
9de87eea | 762 | scm_i_pthread_mutex_lock (&print_state_mutex); |
d2e53ed6 | 763 | if (!scm_is_null (print_state_pool)) |
c4f37e80 | 764 | { |
d5cf5324 DH |
765 | handle = print_state_pool; |
766 | print_state_pool = SCM_CDR (print_state_pool); | |
c4f37e80 | 767 | } |
9de87eea | 768 | scm_i_pthread_mutex_unlock (&print_state_mutex); |
7888309b | 769 | if (scm_is_false (handle)) |
d5cf5324 | 770 | handle = scm_list_1 (make_print_state ()); |
c4f37e80 | 771 | pstate_scm = SCM_CAR (handle); |
c62fbfe1 | 772 | } |
c62fbfe1 | 773 | |
c4f37e80 | 774 | pstate = SCM_PRINT_STATE (pstate_scm); |
15635be5 | 775 | old_writingp = pstate->writingp; |
c62fbfe1 MD |
776 | pstate->writingp = writingp; |
777 | scm_iprin1 (exp, port, pstate); | |
15635be5 | 778 | pstate->writingp = old_writingp; |
c62fbfe1 | 779 | |
bb35f315 MV |
780 | /* Return print state to pool if it has been created above and |
781 | hasn't escaped to Scheme. */ | |
782 | ||
7888309b | 783 | if (scm_is_true (handle) && !pstate->revealed) |
c4f37e80 | 784 | { |
9de87eea | 785 | scm_i_pthread_mutex_lock (&print_state_mutex); |
d5cf5324 DH |
786 | SCM_SETCDR (handle, print_state_pool); |
787 | print_state_pool = handle; | |
9de87eea | 788 | scm_i_pthread_mutex_unlock (&print_state_mutex); |
c4f37e80 | 789 | } |
a51ea417 MD |
790 | } |
791 | ||
f4bc4e59 LC |
792 | /* Convert codepoint CH to UTF-8 and store the result in UTF8. Return |
793 | the number of bytes of the UTF-8-encoded string. */ | |
794 | static size_t | |
795 | codepoint_to_utf8 (scm_t_wchar ch, scm_t_uint8 utf8[4]) | |
9c44cd45 | 796 | { |
f4bc4e59 LC |
797 | size_t len; |
798 | scm_t_uint32 codepoint; | |
799 | ||
800 | codepoint = (scm_t_uint32) ch; | |
07f49ac7 | 801 | |
f4bc4e59 | 802 | if (codepoint <= 0x7f) |
07f49ac7 | 803 | { |
f4bc4e59 LC |
804 | len = 1; |
805 | utf8[0] = (scm_t_uint8) codepoint; | |
806 | } | |
807 | else if (codepoint <= 0x7ffUL) | |
808 | { | |
809 | len = 2; | |
810 | utf8[0] = 0xc0 | (codepoint >> 6); | |
811 | utf8[1] = 0x80 | (codepoint & 0x3f); | |
812 | } | |
813 | else if (codepoint <= 0xffffUL) | |
814 | { | |
815 | len = 3; | |
816 | utf8[0] = 0xe0 | (codepoint >> 12); | |
817 | utf8[1] = 0x80 | ((codepoint >> 6) & 0x3f); | |
818 | utf8[2] = 0x80 | (codepoint & 0x3f); | |
07f49ac7 LC |
819 | } |
820 | else | |
821 | { | |
f4bc4e59 LC |
822 | len = 4; |
823 | utf8[0] = 0xf0 | (codepoint >> 18); | |
824 | utf8[1] = 0x80 | ((codepoint >> 12) & 0x3f); | |
825 | utf8[2] = 0x80 | ((codepoint >> 6) & 0x3f); | |
826 | utf8[3] = 0x80 | (codepoint & 0x3f); | |
827 | } | |
828 | ||
829 | return len; | |
830 | } | |
831 | ||
f4bc4e59 LC |
832 | #define STR_REF(s, x) \ |
833 | (narrow_p \ | |
834 | ? (scm_t_wchar) ((unsigned char *) (s))[x] \ | |
835 | : ((scm_t_wchar *) (s))[x]) | |
836 | ||
7b292a9d LC |
837 | /* Write STR to PORT as UTF-8. STR is a LEN-codepoint string; it is |
838 | narrow if NARROW_P is true, wide otherwise. Return LEN. */ | |
839 | static size_t | |
840 | display_string_as_utf8 (const void *str, int narrow_p, size_t len, | |
841 | SCM port) | |
842 | { | |
843 | size_t printed = 0; | |
844 | ||
845 | while (len > printed) | |
846 | { | |
847 | size_t utf8_len, i; | |
848 | char *input, utf8_buf[256]; | |
849 | ||
850 | /* Convert STR to UTF-8. */ | |
851 | for (i = printed, utf8_len = 0, input = utf8_buf; | |
852 | i < len && utf8_len + 4 < sizeof (utf8_buf); | |
853 | i++) | |
854 | { | |
855 | utf8_len += codepoint_to_utf8 (STR_REF (str, i), | |
856 | (scm_t_uint8 *) input); | |
857 | input = utf8_buf + utf8_len; | |
858 | } | |
859 | ||
860 | /* INPUT was successfully converted, entirely; print the | |
861 | result. */ | |
862 | scm_lfwrite (utf8_buf, utf8_len, port); | |
863 | printed += i - printed; | |
864 | } | |
865 | ||
866 | assert (printed == len); | |
867 | ||
868 | return len; | |
869 | } | |
870 | ||
871 | /* Convert STR through PORT's output conversion descriptor and write the | |
872 | output to PORT. Return the number of codepoints written. */ | |
873 | static size_t | |
874 | display_string_using_iconv (const void *str, int narrow_p, size_t len, | |
875 | SCM port, | |
876 | scm_t_string_failed_conversion_handler strategy) | |
877 | { | |
f4bc4e59 LC |
878 | size_t printed; |
879 | scm_t_port *pt; | |
880 | ||
881 | pt = SCM_PTAB_ENTRY (port); | |
882 | ||
f4bc4e59 LC |
883 | printed = 0; |
884 | ||
885 | while (len > printed) | |
886 | { | |
887 | size_t done, utf8_len, input_left, output_left, i; | |
888 | size_t codepoints_read, output_len; | |
889 | char *input, *output; | |
890 | char utf8_buf[256], encoded_output[256]; | |
891 | size_t offsets[256]; | |
892 | ||
893 | /* Convert STR to UTF-8. */ | |
894 | for (i = printed, utf8_len = 0, input = utf8_buf; | |
895 | i < len && utf8_len + 4 < sizeof (utf8_buf); | |
896 | i++) | |
07f49ac7 | 897 | { |
f4bc4e59 LC |
898 | offsets[utf8_len] = i; |
899 | utf8_len += codepoint_to_utf8 (STR_REF (str, i), | |
900 | (scm_t_uint8 *) input); | |
901 | input = utf8_buf + utf8_len; | |
902 | } | |
903 | ||
904 | input = utf8_buf; | |
905 | input_left = utf8_len; | |
906 | ||
907 | output = encoded_output; | |
908 | output_left = sizeof (encoded_output); | |
909 | ||
910 | done = iconv (pt->output_cd, &input, &input_left, | |
911 | &output, &output_left); | |
07f49ac7 | 912 | |
f4bc4e59 LC |
913 | output_len = sizeof (encoded_output) - output_left; |
914 | ||
915 | if (SCM_UNLIKELY (done == (size_t) -1)) | |
916 | { | |
b2548e23 AW |
917 | int errno_save = errno; |
918 | ||
f4bc4e59 LC |
919 | /* Reset the `iconv' state. */ |
920 | iconv (pt->output_cd, NULL, NULL, NULL, NULL); | |
921 | ||
7174bc08 LC |
922 | /* Print the OUTPUT_LEN bytes successfully converted. */ |
923 | scm_lfwrite (encoded_output, output_len, port); | |
924 | ||
925 | /* See how many input codepoints these OUTPUT_LEN bytes | |
926 | corresponds to. */ | |
927 | codepoints_read = offsets[input - utf8_buf] - printed; | |
928 | printed += codepoints_read; | |
929 | ||
b2548e23 | 930 | if (errno_save == EILSEQ && |
f4bc4e59 | 931 | strategy != SCM_FAILED_CONVERSION_ERROR) |
07f49ac7 | 932 | { |
f4bc4e59 LC |
933 | /* Conversion failed somewhere in INPUT and we want to |
934 | escape or substitute the offending input character. */ | |
935 | ||
f4bc4e59 | 936 | if (strategy == SCM_FAILED_CONVERSION_ESCAPE_SEQUENCE) |
f1ee6d54 | 937 | { |
f4bc4e59 LC |
938 | scm_t_wchar ch; |
939 | ||
940 | /* Find CH, the offending codepoint, and escape it. */ | |
941 | ch = STR_REF (str, offsets[input - utf8_buf]); | |
942 | write_character_escaped (ch, 1, port); | |
f1ee6d54 | 943 | } |
07f49ac7 | 944 | else |
f4bc4e59 LC |
945 | /* STRATEGY is `SCM_FAILED_CONVERSION_QUESTION_MARK'. */ |
946 | display_string ("?", 1, 1, port, strategy); | |
9c44cd45 | 947 | |
f4bc4e59 LC |
948 | printed++; |
949 | } | |
950 | else | |
951 | /* Something bad happened that we can't handle: bail out. */ | |
952 | break; | |
07f49ac7 LC |
953 | } |
954 | else | |
f4bc4e59 LC |
955 | { |
956 | /* INPUT was successfully converted, entirely; print the | |
957 | result. */ | |
958 | scm_lfwrite (encoded_output, output_len, port); | |
959 | codepoints_read = i - printed; | |
960 | printed += codepoints_read; | |
961 | } | |
07f49ac7 LC |
962 | } |
963 | ||
964 | return printed; | |
7b292a9d LC |
965 | } |
966 | ||
f4bc4e59 | 967 | #undef STR_REF |
7b292a9d LC |
968 | |
969 | /* Display the LEN codepoints in STR to PORT according to STRATEGY; | |
970 | return the number of codepoints successfully displayed. If NARROW_P, | |
971 | then STR is interpreted as a sequence of `char', denoting a Latin-1 | |
972 | string; otherwise it's interpreted as a sequence of | |
973 | `scm_t_wchar'. */ | |
974 | static size_t | |
975 | display_string (const void *str, int narrow_p, | |
976 | size_t len, SCM port, | |
977 | scm_t_string_failed_conversion_handler strategy) | |
978 | ||
979 | { | |
980 | scm_t_port *pt; | |
981 | ||
982 | pt = SCM_PTAB_ENTRY (port); | |
983 | ||
984 | if (pt->output_cd == (iconv_t) -1) | |
985 | /* Initialize the conversion descriptors, if needed. */ | |
986 | scm_i_set_port_encoding_x (port, pt->encoding); | |
987 | ||
988 | /* FIXME: In 2.1, add a flag to determine whether a port is UTF-8. */ | |
989 | if (pt->output_cd == (iconv_t) -1) | |
990 | return display_string_as_utf8 (str, narrow_p, len, port); | |
991 | else | |
992 | return display_string_using_iconv (str, narrow_p, len, | |
993 | port, strategy); | |
f4bc4e59 LC |
994 | } |
995 | ||
996 | /* Attempt to display CH to PORT according to STRATEGY. Return non-zero | |
997 | if CH was successfully displayed, zero otherwise (e.g., if it was not | |
998 | representable in PORT's encoding.) */ | |
999 | static int | |
1000 | display_character (scm_t_wchar ch, SCM port, | |
1001 | scm_t_string_failed_conversion_handler strategy) | |
1002 | { | |
1003 | return display_string (&ch, 0, 1, port, strategy) == 1; | |
07f49ac7 LC |
1004 | } |
1005 | ||
33d92fe6 LC |
1006 | /* Attempt to pretty-print CH, a combining character, to PORT. Return |
1007 | zero upon failure, non-zero otherwise. The idea is to print CH above | |
1008 | a dotted circle to make it more visible. */ | |
1009 | static int | |
1010 | write_combining_character (scm_t_wchar ch, SCM port) | |
1011 | { | |
f4bc4e59 LC |
1012 | scm_t_wchar str[2]; |
1013 | ||
1014 | str[0] = SCM_CODEPOINT_DOTTED_CIRCLE; | |
1015 | str[1] = ch; | |
1016 | ||
1017 | return display_string (str, 0, 2, port, iconveh_error) == 2; | |
1018 | } | |
33d92fe6 | 1019 | |
f4bc4e59 LC |
1020 | /* Write CH to PORT in its escaped form, using the string escape syntax |
1021 | if STRING_ESCAPES_P is non-zero. */ | |
1022 | static void | |
1023 | write_character_escaped (scm_t_wchar ch, int string_escapes_p, SCM port) | |
1024 | { | |
1025 | if (string_escapes_p) | |
33d92fe6 | 1026 | { |
f4bc4e59 LC |
1027 | /* Represent CH using the in-string escape syntax. */ |
1028 | ||
1029 | static const char hex[] = "0123456789abcdef"; | |
1030 | static const char escapes[7] = "abtnvfr"; | |
1031 | char buf[9]; | |
1032 | ||
1033 | if (ch >= 0x07 && ch <= 0x0D && ch != 0x0A) | |
33d92fe6 | 1034 | { |
f4bc4e59 LC |
1035 | /* Use special escapes for some C0 controls. */ |
1036 | buf[0] = '\\'; | |
1037 | buf[1] = escapes[ch - 0x07]; | |
1038 | scm_lfwrite (buf, 2, port); | |
1039 | } | |
1040 | else if (!SCM_R6RS_ESCAPES_P) | |
1041 | { | |
1042 | if (ch <= 0xFF) | |
1043 | { | |
1044 | buf[0] = '\\'; | |
1045 | buf[1] = 'x'; | |
1046 | buf[2] = hex[ch / 16]; | |
1047 | buf[3] = hex[ch % 16]; | |
1048 | scm_lfwrite (buf, 4, port); | |
1049 | } | |
1050 | else if (ch <= 0xFFFF) | |
1051 | { | |
1052 | buf[0] = '\\'; | |
1053 | buf[1] = 'u'; | |
1054 | buf[2] = hex[(ch & 0xF000) >> 12]; | |
1055 | buf[3] = hex[(ch & 0xF00) >> 8]; | |
1056 | buf[4] = hex[(ch & 0xF0) >> 4]; | |
1057 | buf[5] = hex[(ch & 0xF)]; | |
1058 | scm_lfwrite (buf, 6, port); | |
1059 | } | |
1060 | else if (ch > 0xFFFF) | |
1061 | { | |
1062 | buf[0] = '\\'; | |
1063 | buf[1] = 'U'; | |
1064 | buf[2] = hex[(ch & 0xF00000) >> 20]; | |
1065 | buf[3] = hex[(ch & 0xF0000) >> 16]; | |
1066 | buf[4] = hex[(ch & 0xF000) >> 12]; | |
1067 | buf[5] = hex[(ch & 0xF00) >> 8]; | |
1068 | buf[6] = hex[(ch & 0xF0) >> 4]; | |
1069 | buf[7] = hex[(ch & 0xF)]; | |
1070 | scm_lfwrite (buf, 8, port); | |
1071 | } | |
33d92fe6 LC |
1072 | } |
1073 | else | |
f4bc4e59 LC |
1074 | { |
1075 | /* Print an R6RS variable-length hex escape: "\xNNNN;". */ | |
1076 | scm_t_wchar ch2 = ch; | |
1077 | ||
1078 | int i = 8; | |
1079 | buf[i] = ';'; | |
1080 | i --; | |
1081 | if (ch == 0) | |
1082 | buf[i--] = '0'; | |
1083 | else | |
1084 | while (ch2 > 0) | |
1085 | { | |
1086 | buf[i] = hex[ch2 & 0xF]; | |
1087 | ch2 >>= 4; | |
1088 | i --; | |
1089 | } | |
1090 | buf[i] = 'x'; | |
1091 | i --; | |
1092 | buf[i] = '\\'; | |
1093 | scm_lfwrite (buf + i, 9 - i, port); | |
1094 | } | |
33d92fe6 LC |
1095 | } |
1096 | else | |
f4bc4e59 LC |
1097 | { |
1098 | /* Represent CH using the character escape syntax. */ | |
1099 | const char *name; | |
33d92fe6 | 1100 | |
f4bc4e59 LC |
1101 | name = scm_i_charname (SCM_MAKE_CHAR (ch)); |
1102 | if (name != NULL) | |
1103 | scm_puts (name, port); | |
1104 | else | |
1105 | PRINT_CHAR_ESCAPE (ch, port); | |
1106 | } | |
33d92fe6 LC |
1107 | } |
1108 | ||
07f49ac7 LC |
1109 | /* Write CH to PORT, escaping it if it's non-graphic or not |
1110 | representable in PORT's encoding. If STRING_ESCAPES_P is true and CH | |
1111 | needs to be escaped, it is escaped using the in-string escape syntax; | |
1112 | otherwise the character escape syntax is used. */ | |
1113 | static void | |
1114 | write_character (scm_t_wchar ch, SCM port, int string_escapes_p) | |
1115 | { | |
1116 | int printed = 0; | |
f4bc4e59 LC |
1117 | scm_t_string_failed_conversion_handler strategy; |
1118 | ||
1119 | strategy = scm_i_get_conversion_strategy (port); | |
07f49ac7 LC |
1120 | |
1121 | if (string_escapes_p) | |
1122 | { | |
1123 | /* Check if CH deserves special treatment. */ | |
1124 | if (ch == '"' || ch == '\\') | |
1125 | { | |
f4bc4e59 LC |
1126 | display_character ('\\', port, iconveh_question_mark); |
1127 | display_character (ch, port, strategy); | |
07f49ac7 LC |
1128 | printed = 1; |
1129 | } | |
8500b186 AW |
1130 | else if (ch == '\n' && SCM_PRINT_ESCAPE_NEWLINES_P) |
1131 | { | |
1132 | display_character ('\\', port, iconveh_question_mark); | |
1133 | display_character ('n', port, strategy); | |
1134 | printed = 1; | |
1135 | } | |
07f49ac7 LC |
1136 | else if (ch == ' ' || ch == '\n') |
1137 | { | |
f4bc4e59 | 1138 | display_character (ch, port, strategy); |
07f49ac7 LC |
1139 | printed = 1; |
1140 | } | |
1141 | } | |
1142 | else | |
33d92fe6 | 1143 | { |
f4bc4e59 | 1144 | display_string ("#\\", 1, 2, port, iconveh_question_mark); |
33d92fe6 LC |
1145 | |
1146 | if (uc_combining_class (ch) != UC_CCC_NR) | |
1147 | /* Character is a combining character, so attempt to | |
1148 | pretty-print it. */ | |
1149 | printed = write_combining_character (ch, port); | |
1150 | } | |
07f49ac7 LC |
1151 | |
1152 | if (!printed | |
1153 | && uc_is_general_category_withtable (ch, | |
1154 | UC_CATEGORY_MASK_L | | |
1155 | UC_CATEGORY_MASK_M | | |
1156 | UC_CATEGORY_MASK_N | | |
1157 | UC_CATEGORY_MASK_P | | |
1158 | UC_CATEGORY_MASK_S)) | |
1159 | /* CH is graphic; attempt to display it. */ | |
1160 | printed = display_character (ch, port, iconveh_error); | |
1161 | ||
1162 | if (!printed) | |
f4bc4e59 LC |
1163 | /* CH isn't graphic or cannot be represented in PORT's encoding. */ |
1164 | write_character_escaped (ch, string_escapes_p, port); | |
9c44cd45 | 1165 | } |
0f2d19dd JB |
1166 | |
1167 | /* Print an integer. | |
1168 | */ | |
1cc91f1b | 1169 | |
0f2d19dd | 1170 | void |
a406c9e9 | 1171 | scm_intprint (scm_t_intmax n, int radix, SCM port) |
0f2d19dd JB |
1172 | { |
1173 | char num_buf[SCM_INTBUFLEN]; | |
b7f3516f | 1174 | scm_lfwrite (num_buf, scm_iint2str (n, radix, num_buf), port); |
0f2d19dd JB |
1175 | } |
1176 | ||
a406c9e9 MV |
1177 | void |
1178 | scm_uintprint (scm_t_uintmax n, int radix, SCM port) | |
1179 | { | |
1180 | char num_buf[SCM_INTBUFLEN]; | |
1181 | scm_lfwrite (num_buf, scm_iuint2str (n, radix, num_buf), port); | |
1182 | } | |
1183 | ||
0f2d19dd JB |
1184 | /* Print an object of unrecognized type. |
1185 | */ | |
1cc91f1b | 1186 | |
0f2d19dd | 1187 | void |
1bbd0b84 | 1188 | scm_ipruk (char *hdr, SCM ptr, SCM port) |
0f2d19dd | 1189 | { |
b7f3516f TT |
1190 | scm_puts ("#<unknown-", port); |
1191 | scm_puts (hdr, port); | |
26224b3f | 1192 | if (1) /* (scm_in_heap_p (ptr)) */ /* FIXME */ |
0f2d19dd | 1193 | { |
b7f3516f | 1194 | scm_puts (" (0x", port); |
0345e278 | 1195 | scm_uintprint (SCM_CELL_WORD_0 (ptr), 16, port); |
b7f3516f | 1196 | scm_puts (" . 0x", port); |
0345e278 | 1197 | scm_uintprint (SCM_CELL_WORD_1 (ptr), 16, port); |
b7f3516f | 1198 | scm_puts (") @", port); |
0f2d19dd | 1199 | } |
b7f3516f | 1200 | scm_puts (" 0x", port); |
0345e278 | 1201 | scm_uintprint (SCM_UNPACK (ptr), 16, port); |
b7f3516f | 1202 | scm_putc ('>', port); |
0f2d19dd JB |
1203 | } |
1204 | ||
1cc91f1b | 1205 | |
904a077d | 1206 | /* Print a list. |
22a52da1 | 1207 | */ |
0f2d19dd | 1208 | void |
34d19ef6 | 1209 | scm_iprlist (char *hdr, SCM exp, int tlr, SCM port, scm_print_state *pstate) |
0f2d19dd | 1210 | { |
c62fbfe1 | 1211 | register SCM hare, tortoise; |
c014a02e | 1212 | long floor = pstate->top - 2; |
b7f3516f | 1213 | scm_puts (hdr, port); |
0f2d19dd | 1214 | /* CHECK_INTS; */ |
c62fbfe1 MD |
1215 | if (pstate->fancyp) |
1216 | goto fancy_printing; | |
1217 | ||
1218 | /* Run a hare and tortoise so that total time complexity will be | |
1219 | O(depth * N) instead of O(N^2). */ | |
1220 | hare = SCM_CDR (exp); | |
1221 | tortoise = exp; | |
d2e53ed6 | 1222 | while (scm_is_pair (hare)) |
c62fbfe1 | 1223 | { |
bc36d050 | 1224 | if (scm_is_eq (hare, tortoise)) |
c62fbfe1 MD |
1225 | goto fancy_printing; |
1226 | hare = SCM_CDR (hare); | |
d2e53ed6 | 1227 | if (!scm_is_pair (hare)) |
c62fbfe1 MD |
1228 | break; |
1229 | hare = SCM_CDR (hare); | |
1230 | tortoise = SCM_CDR (tortoise); | |
1231 | } | |
1232 | ||
1233 | /* No cdr cycles intrinsic to this list */ | |
1234 | scm_iprin1 (SCM_CAR (exp), port, pstate); | |
d2e53ed6 | 1235 | for (exp = SCM_CDR (exp); scm_is_pair (exp); exp = SCM_CDR (exp)) |
0f2d19dd | 1236 | { |
c014a02e | 1237 | register long i; |
5ca6dc39 | 1238 | |
c62fbfe1 | 1239 | for (i = floor; i >= 0; --i) |
509759dd | 1240 | if (scm_is_eq (PSTATE_STACK_REF(pstate, i), exp)) |
c62fbfe1 MD |
1241 | goto circref; |
1242 | PUSH_REF (pstate, exp); | |
b7f3516f | 1243 | scm_putc (' ', port); |
0f2d19dd | 1244 | /* CHECK_INTS; */ |
c62fbfe1 | 1245 | scm_iprin1 (SCM_CAR (exp), port, pstate); |
0f2d19dd | 1246 | } |
c96d76b8 | 1247 | if (!SCM_NULL_OR_NIL_P (exp)) |
0f2d19dd | 1248 | { |
b7f3516f | 1249 | scm_puts (" . ", port); |
c62fbfe1 | 1250 | scm_iprin1 (exp, port, pstate); |
0f2d19dd | 1251 | } |
c62fbfe1 | 1252 | |
a51ea417 | 1253 | end: |
b7f3516f | 1254 | scm_putc (tlr, port); |
c62fbfe1 | 1255 | pstate->top = floor + 2; |
a51ea417 | 1256 | return; |
c62fbfe1 MD |
1257 | |
1258 | fancy_printing: | |
1259 | { | |
c014a02e | 1260 | long n = pstate->length; |
c62fbfe1 MD |
1261 | |
1262 | scm_iprin1 (SCM_CAR (exp), port, pstate); | |
1263 | exp = SCM_CDR (exp); --n; | |
d2e53ed6 | 1264 | for (; scm_is_pair (exp); exp = SCM_CDR (exp)) |
c62fbfe1 | 1265 | { |
c014a02e | 1266 | register unsigned long i; |
5ca6dc39 | 1267 | |
c62fbfe1 | 1268 | for (i = 0; i < pstate->top; ++i) |
509759dd | 1269 | if (scm_is_eq (PSTATE_STACK_REF(pstate, i), exp)) |
c62fbfe1 MD |
1270 | goto fancy_circref; |
1271 | if (pstate->fancyp) | |
1272 | { | |
1273 | if (n == 0) | |
1274 | { | |
b7f3516f | 1275 | scm_puts (" ...", port); |
c62fbfe1 MD |
1276 | goto skip_tail; |
1277 | } | |
1278 | else | |
1279 | --n; | |
1280 | } | |
1281 | PUSH_REF(pstate, exp); | |
1282 | ++pstate->list_offset; | |
b7f3516f | 1283 | scm_putc (' ', port); |
c62fbfe1 MD |
1284 | /* CHECK_INTS; */ |
1285 | scm_iprin1 (SCM_CAR (exp), port, pstate); | |
1286 | } | |
1287 | } | |
c96d76b8 | 1288 | if (!SCM_NULL_OR_NIL_P (exp)) |
c62fbfe1 | 1289 | { |
b7f3516f | 1290 | scm_puts (" . ", port); |
c62fbfe1 MD |
1291 | scm_iprin1 (exp, port, pstate); |
1292 | } | |
1293 | skip_tail: | |
1294 | pstate->list_offset -= pstate->top - floor - 2; | |
a51ea417 | 1295 | goto end; |
a51ea417 | 1296 | |
c62fbfe1 MD |
1297 | fancy_circref: |
1298 | pstate->list_offset -= pstate->top - floor - 2; | |
1299 | ||
1300 | circref: | |
b7f3516f | 1301 | scm_puts (" . ", port); |
c62fbfe1 MD |
1302 | print_circref (port, pstate, exp); |
1303 | goto end; | |
0f2d19dd JB |
1304 | } |
1305 | ||
1306 | \f | |
1307 | ||
bb35f315 MV |
1308 | int |
1309 | scm_valid_oport_value_p (SCM val) | |
1310 | { | |
368cf54d GB |
1311 | return (SCM_OPOUTPORTP (val) |
1312 | || (SCM_PORT_WITH_PS_P (val) | |
1313 | && SCM_OPOUTPORTP (SCM_PORT_WITH_PS_PORT (val)))); | |
bb35f315 MV |
1314 | } |
1315 | ||
8b840115 | 1316 | /* SCM_GPROC(s_write, "write", 1, 1, 0, scm_write, g_write); */ |
1cc91f1b | 1317 | |
0f2d19dd | 1318 | SCM |
1bbd0b84 | 1319 | scm_write (SCM obj, SCM port) |
0f2d19dd JB |
1320 | { |
1321 | if (SCM_UNBNDP (port)) | |
9de87eea | 1322 | port = scm_current_output_port (); |
3eb7e6ee JB |
1323 | |
1324 | SCM_ASSERT (scm_valid_oport_value_p (port), port, SCM_ARG2, s_write); | |
bb35f315 | 1325 | |
a51ea417 | 1326 | scm_prin1 (obj, port, 1); |
0f2d19dd JB |
1327 | return SCM_UNSPECIFIED; |
1328 | } | |
1329 | ||
1330 | ||
8b840115 | 1331 | /* SCM_GPROC(s_display, "display", 1, 1, 0, scm_display, g_display); */ |
1cc91f1b | 1332 | |
0f2d19dd | 1333 | SCM |
1bbd0b84 | 1334 | scm_display (SCM obj, SCM port) |
0f2d19dd JB |
1335 | { |
1336 | if (SCM_UNBNDP (port)) | |
9de87eea | 1337 | port = scm_current_output_port (); |
3eb7e6ee JB |
1338 | |
1339 | SCM_ASSERT (scm_valid_oport_value_p (port), port, SCM_ARG2, s_display); | |
bb35f315 | 1340 | |
a51ea417 | 1341 | scm_prin1 (obj, port, 0); |
0f2d19dd JB |
1342 | return SCM_UNSPECIFIED; |
1343 | } | |
1344 | ||
70d63753 GB |
1345 | |
1346 | SCM_DEFINE (scm_simple_format, "simple-format", 2, 0, 1, | |
1347 | (SCM destination, SCM message, SCM args), | |
eca65e90 MG |
1348 | "Write @var{message} to @var{destination}, defaulting to\n" |
1349 | "the current output port.\n" | |
1350 | "@var{message} can contain @code{~A} (was @code{%s}) and\n" | |
1351 | "@code{~S} (was @code{%S}) escapes. When printed,\n" | |
1352 | "the escapes are replaced with corresponding members of\n" | |
b7e64f8b | 1353 | "@var{args}:\n" |
eca65e90 MG |
1354 | "@code{~A} formats using @code{display} and @code{~S} formats\n" |
1355 | "using @code{write}.\n" | |
1356 | "If @var{destination} is @code{#t}, then use the current output\n" | |
1357 | "port, if @var{destination} is @code{#f}, then return a string\n" | |
1358 | "containing the formatted text. Does not add a trailing newline.") | |
70d63753 GB |
1359 | #define FUNC_NAME s_scm_simple_format |
1360 | { | |
dfd03fb9 | 1361 | SCM port, answer = SCM_UNSPECIFIED; |
70d63753 GB |
1362 | int fReturnString = 0; |
1363 | int writingp; | |
889975e5 | 1364 | size_t start, p, end; |
70d63753 | 1365 | |
bc36d050 | 1366 | if (scm_is_eq (destination, SCM_BOOL_T)) |
daba1a71 | 1367 | { |
9de87eea | 1368 | destination = port = scm_current_output_port (); |
daba1a71 | 1369 | } |
7888309b | 1370 | else if (scm_is_false (destination)) |
daba1a71 MD |
1371 | { |
1372 | fReturnString = 1; | |
0b2c2ba3 | 1373 | port = scm_mkstrport (SCM_INUM0, SCM_BOOL_F, |
dfd03fb9 MD |
1374 | SCM_OPN | SCM_WRTNG, |
1375 | FUNC_NAME); | |
1376 | destination = port; | |
daba1a71 MD |
1377 | } |
1378 | else | |
1379 | { | |
1380 | SCM_VALIDATE_OPORT_VALUE (1, destination); | |
dfd03fb9 | 1381 | port = SCM_COERCE_OUTPORT (destination); |
daba1a71 MD |
1382 | } |
1383 | SCM_VALIDATE_STRING (2, message); | |
af45e3b0 | 1384 | SCM_VALIDATE_REST_ARGUMENT (args); |
70d63753 | 1385 | |
889975e5 MG |
1386 | p = 0; |
1387 | start = 0; | |
1388 | end = scm_i_string_length (message); | |
b24b5e13 | 1389 | for (p = start; p != end; ++p) |
889975e5 | 1390 | if (scm_i_string_ref (message, p) == '~') |
70d63753 | 1391 | { |
b24b5e13 | 1392 | if (++p == end) |
6662998f MV |
1393 | break; |
1394 | ||
889975e5 | 1395 | switch (scm_i_string_ref (message, p)) |
6662998f MV |
1396 | { |
1397 | case 'A': case 'a': | |
1398 | writingp = 0; | |
1399 | break; | |
1400 | case 'S': case 's': | |
1401 | writingp = 1; | |
1402 | break; | |
1403 | case '~': | |
889975e5 | 1404 | scm_lfwrite_substr (message, start, p, port); |
6662998f MV |
1405 | start = p + 1; |
1406 | continue; | |
1407 | case '%': | |
889975e5 | 1408 | scm_lfwrite_substr (message, start, p - 1, port); |
dfd03fb9 | 1409 | scm_newline (port); |
6662998f MV |
1410 | start = p + 1; |
1411 | continue; | |
1412 | default: | |
1afff620 | 1413 | SCM_MISC_ERROR ("FORMAT: Unsupported format option ~~~A - use (ice-9 format) instead", |
889975e5 | 1414 | scm_list_1 (SCM_MAKE_CHAR (scm_i_string_ref (message, p)))); |
6662998f MV |
1415 | |
1416 | } | |
70d63753 | 1417 | |
6662998f | 1418 | |
d2e53ed6 | 1419 | if (!scm_is_pair (args)) |
1afff620 | 1420 | SCM_MISC_ERROR ("FORMAT: Missing argument for ~~~A", |
889975e5 | 1421 | scm_list_1 (SCM_MAKE_CHAR (scm_i_string_ref (message, p)))); |
6662998f | 1422 | |
889975e5 | 1423 | scm_lfwrite_substr (message, start, p - 1, port); |
dfd03fb9 | 1424 | /* we pass destination here */ |
70d63753 GB |
1425 | scm_prin1 (SCM_CAR (args), destination, writingp); |
1426 | args = SCM_CDR (args); | |
1427 | start = p + 1; | |
1428 | } | |
6662998f | 1429 | |
889975e5 | 1430 | scm_lfwrite_substr (message, start, p, port); |
bc36d050 | 1431 | if (!scm_is_eq (args, SCM_EOL)) |
1afff620 KN |
1432 | SCM_MISC_ERROR ("FORMAT: ~A superfluous arguments", |
1433 | scm_list_1 (scm_length (args))); | |
70d63753 GB |
1434 | |
1435 | if (fReturnString) | |
1436 | answer = scm_strport_to_string (destination); | |
1437 | ||
daba1a71 | 1438 | return scm_return_first (answer, message); |
70d63753 GB |
1439 | } |
1440 | #undef FUNC_NAME | |
1441 | ||
1442 | ||
3b3b36dd | 1443 | SCM_DEFINE (scm_newline, "newline", 0, 1, 0, |
b450f070 | 1444 | (SCM port), |
8f85c0c6 NJ |
1445 | "Send a newline to @var{port}.\n" |
1446 | "If @var{port} is omitted, send to the current output port.") | |
1bbd0b84 | 1447 | #define FUNC_NAME s_scm_newline |
0f2d19dd JB |
1448 | { |
1449 | if (SCM_UNBNDP (port)) | |
9de87eea | 1450 | port = scm_current_output_port (); |
3eb7e6ee | 1451 | |
34d19ef6 | 1452 | SCM_VALIDATE_OPORT_VALUE (1, port); |
bb35f315 | 1453 | |
0ef4ae82 | 1454 | scm_putc ('\n', SCM_COERCE_OUTPORT (port)); |
0f2d19dd JB |
1455 | return SCM_UNSPECIFIED; |
1456 | } | |
1bbd0b84 | 1457 | #undef FUNC_NAME |
0f2d19dd | 1458 | |
3b3b36dd | 1459 | SCM_DEFINE (scm_write_char, "write-char", 1, 1, 0, |
b450f070 | 1460 | (SCM chr, SCM port), |
eca65e90 | 1461 | "Send character @var{chr} to @var{port}.") |
1bbd0b84 | 1462 | #define FUNC_NAME s_scm_write_char |
0f2d19dd JB |
1463 | { |
1464 | if (SCM_UNBNDP (port)) | |
9de87eea | 1465 | port = scm_current_output_port (); |
3eb7e6ee | 1466 | |
34d19ef6 HWN |
1467 | SCM_VALIDATE_CHAR (1, chr); |
1468 | SCM_VALIDATE_OPORT_VALUE (2, port); | |
07f49ac7 LC |
1469 | |
1470 | port = SCM_COERCE_OUTPORT (port); | |
1471 | if (!display_character (SCM_CHAR (chr), port, | |
1472 | scm_i_get_conversion_strategy (port))) | |
1473 | scm_encoding_error (__func__, errno, | |
1474 | "cannot convert to output locale", | |
6851d3be | 1475 | port, chr); |
07f49ac7 | 1476 | |
0f2d19dd JB |
1477 | return SCM_UNSPECIFIED; |
1478 | } | |
1bbd0b84 | 1479 | #undef FUNC_NAME |
0f2d19dd | 1480 | |
0f2d19dd JB |
1481 | \f |
1482 | ||
bb35f315 | 1483 | /* Call back to Scheme code to do the printing of special objects |
c19bc088 MD |
1484 | * (like structs). SCM_PRINTER_APPLY applies PROC to EXP and a smob |
1485 | * containing PORT and PSTATE. This object can be used as the port for | |
1486 | * display/write etc to continue the current print chain. The REVEALED | |
1487 | * field of PSTATE is set to true to indicate that the print state has | |
1488 | * escaped to Scheme and thus has to be freed by the GC. | |
1489 | */ | |
1490 | ||
92c2555f | 1491 | scm_t_bits scm_tc16_port_with_ps; |
c19bc088 MD |
1492 | |
1493 | /* Print exactly as the port itself would */ | |
1494 | ||
1495 | static int | |
e841c3e0 | 1496 | port_with_ps_print (SCM obj, SCM port, scm_print_state *pstate) |
c19bc088 MD |
1497 | { |
1498 | obj = SCM_PORT_WITH_PS_PORT (obj); | |
1499 | return scm_ptobs[SCM_PTOBNUM (obj)].print (obj, port, pstate); | |
1500 | } | |
c4f37e80 MV |
1501 | |
1502 | SCM | |
1bbd0b84 | 1503 | scm_printer_apply (SCM proc, SCM exp, SCM port, scm_print_state *pstate) |
c4f37e80 | 1504 | { |
bb35f315 | 1505 | pstate->revealed = 1; |
dfd03fb9 MD |
1506 | return scm_call_2 (proc, exp, |
1507 | scm_i_port_with_print_state (port, pstate->handle)); | |
c19bc088 MD |
1508 | } |
1509 | ||
dfd03fb9 | 1510 | SCM_DEFINE (scm_port_with_print_state, "port-with-print-state", 1, 1, 0, |
1bbd0b84 | 1511 | (SCM port, SCM pstate), |
71331188 | 1512 | "Create a new port which behaves like @var{port}, but with an\n" |
dfd03fb9 MD |
1513 | "included print state @var{pstate}. @var{pstate} is optional.\n" |
1514 | "If @var{pstate} isn't supplied and @var{port} already has\n" | |
1515 | "a print state, the old print state is reused.") | |
1bbd0b84 | 1516 | #define FUNC_NAME s_scm_port_with_print_state |
c19bc088 | 1517 | { |
34d19ef6 | 1518 | SCM_VALIDATE_OPORT_VALUE (1, port); |
dfd03fb9 MD |
1519 | if (!SCM_UNBNDP (pstate)) |
1520 | SCM_VALIDATE_PRINTSTATE (2, pstate); | |
1521 | return scm_i_port_with_print_state (port, pstate); | |
c19bc088 | 1522 | } |
1bbd0b84 | 1523 | #undef FUNC_NAME |
c19bc088 | 1524 | |
a1ec6916 | 1525 | SCM_DEFINE (scm_get_print_state, "get-print-state", 1, 0, 0, |
1bbd0b84 | 1526 | (SCM port), |
71331188 MG |
1527 | "Return the print state of the port @var{port}. If @var{port}\n" |
1528 | "has no associated print state, @code{#f} is returned.") | |
1bbd0b84 | 1529 | #define FUNC_NAME s_scm_get_print_state |
c19bc088 | 1530 | { |
368cf54d GB |
1531 | if (SCM_PORT_WITH_PS_P (port)) |
1532 | return SCM_PORT_WITH_PS_PS (port); | |
f5f2dcff | 1533 | if (SCM_OUTPUT_PORT_P (port)) |
368cf54d | 1534 | return SCM_BOOL_F; |
276dd677 | 1535 | SCM_WRONG_TYPE_ARG (1, port); |
c4f37e80 | 1536 | } |
1bbd0b84 | 1537 | #undef FUNC_NAME |
bb35f315 | 1538 | |
c4f37e80 | 1539 | \f |
1cc91f1b | 1540 | |
0f2d19dd JB |
1541 | void |
1542 | scm_init_print () | |
0f2d19dd | 1543 | { |
c19bc088 | 1544 | SCM vtable, layout, type; |
d5cf5324 | 1545 | |
d5cf5324 DH |
1546 | scm_gc_register_root (&print_state_pool); |
1547 | scm_gc_register_root (&scm_print_state_vtable); | |
3ce4544c | 1548 | vtable = scm_make_vtable_vtable (scm_nullstr, SCM_INUM0, SCM_EOL); |
cc95e00a MV |
1549 | layout = |
1550 | scm_make_struct_layout (scm_from_locale_string (SCM_PRINT_STATE_LAYOUT)); | |
1afff620 | 1551 | type = scm_make_struct (vtable, SCM_INUM0, scm_list_1 (layout)); |
4a655e50 | 1552 | scm_set_struct_vtable_name_x (type, scm_from_latin1_symbol ("print-state")); |
bb35f315 | 1553 | scm_print_state_vtable = type; |
c4f37e80 | 1554 | |
c19bc088 MD |
1555 | /* Don't want to bind a wrapper class in GOOPS, so pass 0 as arg1. */ |
1556 | scm_tc16_port_with_ps = scm_make_smob_type (0, 0); | |
e841c3e0 | 1557 | scm_set_smob_print (scm_tc16_port_with_ps, port_with_ps_print); |
81ae25da | 1558 | |
a0599745 | 1559 | #include "libguile/print.x" |
475fa9a5 | 1560 | |
8500b186 AW |
1561 | scm_init_opts (scm_print_options, scm_print_opts); |
1562 | scm_print_opts[SCM_PRINT_HIGHLIGHT_PREFIX_I].val = | |
1563 | SCM_UNPACK (scm_from_locale_string ("{")); | |
1564 | scm_print_opts[SCM_PRINT_HIGHLIGHT_SUFFIX_I].val = | |
1565 | SCM_UNPACK (scm_from_locale_string ("}")); | |
475fa9a5 | 1566 | scm_print_opts[SCM_PRINT_KEYWORD_STYLE_I].val = SCM_UNPACK (sym_reader); |
0f2d19dd | 1567 | } |
89e00824 ML |
1568 | |
1569 | /* | |
1570 | Local Variables: | |
1571 | c-file-style: "gnu" | |
1572 | End: | |
1573 | */ |