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 | ||
478848cb LC |
64 | #define PORT_CONVERSION_HANDLER(port) \ |
65 | SCM_PTAB_ENTRY (port)->ilseq_handler | |
66 | ||
f4bc4e59 LC |
67 | static size_t display_string (const void *, int, size_t, SCM, |
68 | scm_t_string_failed_conversion_handler); | |
69 | ||
07f49ac7 LC |
70 | static int display_character (scm_t_wchar, SCM, |
71 | scm_t_string_failed_conversion_handler); | |
f4bc4e59 | 72 | |
07f49ac7 LC |
73 | static void write_character (scm_t_wchar, SCM, int); |
74 | ||
f4bc4e59 LC |
75 | static void write_character_escaped (scm_t_wchar, int, SCM); |
76 | ||
07f49ac7 LC |
77 | \f |
78 | ||
0f2d19dd JB |
79 | /* {Names of immediate symbols} |
80 | * | |
81 | * This table must agree with the declarations in scm.h: {Immediate Symbols}. | |
82 | */ | |
83 | ||
e17d318f DH |
84 | /* This table must agree with the list of flags in tags.h. */ |
85 | static const char *iflagnames[] = | |
86 | { | |
87 | "#f", | |
45f4cbdf MW |
88 | "#nil", /* Elisp nil value. Should print from elisp as symbol `nil'. */ |
89 | "#<XXX UNUSED LISP FALSE -- DO NOT USE -- SHOULD NEVER BE SEEN XXX>", | |
90 | "()", | |
e17d318f | 91 | "#t", |
f60c2c4e MW |
92 | "#<XXX UNUSED BOOLEAN 0 -- DO NOT USE -- SHOULD NEVER BE SEEN XXX>", |
93 | "#<XXX UNUSED BOOLEAN 1 -- DO NOT USE -- SHOULD NEVER BE SEEN XXX>", | |
94 | "#<XXX UNUSED BOOLEAN 2 -- DO NOT USE -- SHOULD NEVER BE SEEN XXX>", | |
45f4cbdf | 95 | "#<unspecified>", |
e17d318f DH |
96 | "#<undefined>", |
97 | "#<eof>", | |
e17d318f DH |
98 | |
99 | /* Unbound slot marker for GOOPS. For internal use in GOOPS only. */ | |
100 | "#<unbound>", | |
e17d318f DH |
101 | }; |
102 | ||
475fa9a5 MV |
103 | SCM_SYMBOL (sym_reader, "reader"); |
104 | ||
92c2555f | 105 | scm_t_option scm_print_opts[] = { |
210c0325 | 106 | { SCM_OPTION_SCM, "highlight-prefix", (scm_t_bits)SCM_BOOL_F_BITS, |
81ae25da | 107 | "The string to print before highlighted values." }, |
210c0325 | 108 | { SCM_OPTION_SCM, "highlight-suffix", (scm_t_bits)SCM_BOOL_F_BITS, |
475fa9a5 | 109 | "The string to print after highlighted values." }, |
210c0325 | 110 | { SCM_OPTION_SCM, "quote-keywordish-symbols", (scm_t_bits)SCM_BOOL_F_BITS, |
475fa9a5 MV |
111 | "How to print symbols that have a colon as their first or last character. " |
112 | "The value '#f' does not quote the colons; '#t' quotes them; " | |
8500b186 AW |
113 | "'reader' quotes them when the reader option 'keywords' is not '#f'." }, |
114 | { SCM_OPTION_BOOLEAN, "escape-newlines", 1, | |
115 | "Render newlines as \\n when printing using `write'." }, | |
62560650 | 116 | { 0 }, |
e6e4c9af MD |
117 | }; |
118 | ||
a1ec6916 | 119 | SCM_DEFINE (scm_print_options, "print-options-interface", 0, 1, 0, |
1bbd0b84 | 120 | (SCM setting), |
71331188 | 121 | "Option interface for the print options. Instead of using\n" |
1dd05fd8 MG |
122 | "this procedure directly, use the procedures\n" |
123 | "@code{print-enable}, @code{print-disable}, @code{print-set!}\n" | |
124 | "and @code{print-options}.") | |
1bbd0b84 | 125 | #define FUNC_NAME s_scm_print_options |
e6e4c9af | 126 | { |
a51ea417 | 127 | SCM ans = scm_options (setting, |
b7ff98dd | 128 | scm_print_opts, |
1bbd0b84 | 129 | FUNC_NAME); |
e6e4c9af MD |
130 | return ans; |
131 | } | |
1bbd0b84 | 132 | #undef FUNC_NAME |
e6e4c9af | 133 | |
0f2d19dd JB |
134 | \f |
135 | /* {Printing of Scheme Objects} | |
136 | */ | |
137 | ||
a51ea417 | 138 | /* Detection of circular references. |
c62fbfe1 MD |
139 | * |
140 | * Due to other constraints in the implementation, this code has bad | |
5d46ebe3 MD |
141 | * time complexity (O (depth * N)), The printer code can be |
142 | * rewritten to be O(N). | |
a51ea417 | 143 | */ |
dbb5de29 NJ |
144 | #define PUSH_REF(pstate, obj) \ |
145 | do \ | |
146 | { \ | |
147 | PSTATE_STACK_SET (pstate, pstate->top, obj); \ | |
148 | pstate->top++; \ | |
149 | if (pstate->top == pstate->ceiling) \ | |
150 | grow_ref_stack (pstate); \ | |
1bbd0b84 | 151 | } while(0) |
a51ea417 | 152 | |
dbb5de29 NJ |
153 | #define ENTER_NESTED_DATA(pstate, obj, label) \ |
154 | do \ | |
155 | { \ | |
156 | register unsigned long i; \ | |
157 | for (i = 0; i < pstate->top; ++i) \ | |
158 | if (scm_is_eq (PSTATE_STACK_REF (pstate, i), (obj))) \ | |
159 | goto label; \ | |
160 | if (pstate->fancyp) \ | |
161 | { \ | |
162 | if (pstate->top - pstate->list_offset >= pstate->level) \ | |
163 | { \ | |
164 | scm_putc ('#', port); \ | |
165 | return; \ | |
166 | } \ | |
167 | } \ | |
168 | PUSH_REF(pstate, obj); \ | |
1bbd0b84 | 169 | } while(0) |
a51ea417 | 170 | |
dbb5de29 NJ |
171 | #define EXIT_NESTED_DATA(pstate) \ |
172 | do \ | |
173 | { \ | |
174 | --pstate->top; \ | |
175 | PSTATE_STACK_SET (pstate, pstate->top, SCM_UNDEFINED); \ | |
176 | } \ | |
177 | while (0) | |
c62fbfe1 | 178 | |
d5cf5324 DH |
179 | SCM scm_print_state_vtable = SCM_BOOL_F; |
180 | static SCM print_state_pool = SCM_EOL; | |
9de87eea | 181 | scm_i_pthread_mutex_t print_state_mutex = SCM_I_PTHREAD_MUTEX_INITIALIZER; |
c4f37e80 | 182 | |
f843a84c | 183 | #ifdef GUILE_DEBUG /* Used for debugging purposes */ |
1cc91f1b | 184 | |
3b3b36dd | 185 | SCM_DEFINE (scm_current_pstate, "current-pstate", 0, 0, 0, |
1bbd0b84 | 186 | (), |
d5cf5324 | 187 | "Return the current-pstate -- the car of the\n" |
5352393c MG |
188 | "@code{print_state_pool}. @code{current-pstate} is only\n" |
189 | "included in @code{--enable-guile-debug} builds.") | |
1bbd0b84 | 190 | #define FUNC_NAME s_scm_current_pstate |
c62fbfe1 | 191 | { |
d2e53ed6 | 192 | if (!scm_is_null (print_state_pool)) |
d5cf5324 | 193 | return SCM_CAR (print_state_pool); |
a0adfbf0 | 194 | else |
0a284a4e | 195 | return SCM_BOOL_F; |
c62fbfe1 | 196 | } |
1bbd0b84 GB |
197 | #undef FUNC_NAME |
198 | ||
c62fbfe1 MD |
199 | #endif |
200 | ||
201 | #define PSTATE_SIZE 50L | |
202 | ||
698c0295 | 203 | static SCM |
1bbd0b84 | 204 | make_print_state (void) |
698c0295 | 205 | { |
d5cf5324 DH |
206 | SCM print_state |
207 | = scm_make_struct (scm_print_state_vtable, SCM_INUM0, SCM_EOL); | |
bf685b6d | 208 | scm_print_state *pstate = SCM_PRINT_STATE (print_state); |
00ffa0e7 | 209 | pstate->ref_vect = scm_c_make_vector (PSTATE_SIZE, SCM_UNDEFINED); |
4057a3e0 | 210 | pstate->ceiling = SCM_SIMPLE_VECTOR_LENGTH (pstate->ref_vect); |
d232520a | 211 | pstate->highlight_objects = SCM_EOL; |
698c0295 MD |
212 | return print_state; |
213 | } | |
1cc91f1b | 214 | |
c62fbfe1 MD |
215 | SCM |
216 | scm_make_print_state () | |
c62fbfe1 | 217 | { |
230d095f | 218 | SCM answer = SCM_BOOL_F; |
698c0295 MD |
219 | |
220 | /* First try to allocate a print state from the pool */ | |
9de87eea | 221 | scm_i_pthread_mutex_lock (&print_state_mutex); |
d2e53ed6 | 222 | if (!scm_is_null (print_state_pool)) |
698c0295 | 223 | { |
d5cf5324 DH |
224 | answer = SCM_CAR (print_state_pool); |
225 | print_state_pool = SCM_CDR (print_state_pool); | |
698c0295 | 226 | } |
9de87eea | 227 | scm_i_pthread_mutex_unlock (&print_state_mutex); |
698c0295 | 228 | |
7888309b | 229 | return scm_is_false (answer) ? make_print_state () : answer; |
c62fbfe1 | 230 | } |
a51ea417 | 231 | |
698c0295 | 232 | void |
6e8d25a6 | 233 | scm_free_print_state (SCM print_state) |
698c0295 MD |
234 | { |
235 | SCM handle; | |
236 | scm_print_state *pstate = SCM_PRINT_STATE (print_state); | |
237 | /* Cleanup before returning print state to pool. | |
238 | * It is better to do it here. Doing it in scm_prin1 | |
239 | * would cost more since that function is called much more | |
240 | * often. | |
241 | */ | |
242 | pstate->fancyp = 0; | |
bb35f315 | 243 | pstate->revealed = 0; |
d232520a | 244 | pstate->highlight_objects = SCM_EOL; |
9de87eea | 245 | scm_i_pthread_mutex_lock (&print_state_mutex); |
16d4699b | 246 | handle = scm_cons (print_state, print_state_pool); |
d5cf5324 | 247 | print_state_pool = handle; |
9de87eea | 248 | scm_i_pthread_mutex_unlock (&print_state_mutex); |
dfd03fb9 MD |
249 | } |
250 | ||
251 | SCM | |
252 | scm_i_port_with_print_state (SCM port, SCM print_state) | |
253 | { | |
254 | if (SCM_UNBNDP (print_state)) | |
255 | { | |
256 | if (SCM_PORT_WITH_PS_P (port)) | |
257 | return port; | |
258 | else | |
259 | print_state = scm_make_print_state (); | |
260 | /* port does not need to be coerced since it doesn't have ps */ | |
261 | } | |
262 | else | |
263 | port = SCM_COERCE_OUTPORT (port); | |
264 | SCM_RETURN_NEWSMOB (scm_tc16_port_with_ps, | |
265 | SCM_UNPACK (scm_cons (port, print_state))); | |
698c0295 | 266 | } |
1cc91f1b | 267 | |
a51ea417 | 268 | static void |
1bbd0b84 | 269 | grow_ref_stack (scm_print_state *pstate) |
a51ea417 | 270 | { |
4057a3e0 MV |
271 | SCM old_vect = pstate->ref_vect; |
272 | size_t old_size = SCM_SIMPLE_VECTOR_LENGTH (old_vect); | |
273 | size_t new_size = 2 * pstate->ceiling; | |
00ffa0e7 | 274 | SCM new_vect = scm_c_make_vector (new_size, SCM_UNDEFINED); |
b17004b8 DH |
275 | unsigned long int i; |
276 | ||
277 | for (i = 0; i != old_size; ++i) | |
4057a3e0 | 278 | SCM_SIMPLE_VECTOR_SET (new_vect, i, SCM_SIMPLE_VECTOR_REF (old_vect, i)); |
b17004b8 DH |
279 | |
280 | pstate->ref_vect = new_vect; | |
bf685b6d | 281 | pstate->ceiling = new_size; |
a51ea417 MD |
282 | } |
283 | ||
509759dd MV |
284 | #define PSTATE_STACK_REF(p,i) SCM_SIMPLE_VECTOR_REF((p)->ref_vect, (i)) |
285 | #define PSTATE_STACK_SET(p,i,v) SCM_SIMPLE_VECTOR_SET((p)->ref_vect, (i), (v)) | |
1cc91f1b | 286 | |
a51ea417 | 287 | static void |
34d19ef6 | 288 | print_circref (SCM port, scm_print_state *pstate, SCM ref) |
a51ea417 | 289 | { |
c014a02e ML |
290 | register long i; |
291 | long self = pstate->top - 1; | |
c62fbfe1 | 292 | i = pstate->top - 1; |
509759dd | 293 | if (scm_is_pair (PSTATE_STACK_REF (pstate, i))) |
c62fbfe1 MD |
294 | { |
295 | while (i > 0) | |
296 | { | |
509759dd MV |
297 | if (!scm_is_pair (PSTATE_STACK_REF (pstate, i-1)) |
298 | || !scm_is_eq (SCM_CDR (PSTATE_STACK_REF (pstate, i-1)), | |
299 | SCM_CDR (PSTATE_STACK_REF (pstate, i)))) | |
c62fbfe1 MD |
300 | break; |
301 | --i; | |
302 | } | |
303 | self = i; | |
304 | } | |
305 | for (i = pstate->top - 1; 1; --i) | |
509759dd | 306 | if (scm_is_eq (PSTATE_STACK_REF(pstate, i), ref)) |
c62fbfe1 | 307 | break; |
b7f3516f | 308 | scm_putc ('#', port); |
c62fbfe1 | 309 | scm_intprint (i - self, 10, port); |
b7f3516f | 310 | scm_putc ('#', port); |
a51ea417 MD |
311 | } |
312 | ||
6662998f MV |
313 | /* Print the name of a symbol. */ |
314 | ||
475fa9a5 | 315 | static int |
15671c6e | 316 | quote_keywordish_symbols (void) |
475fa9a5 | 317 | { |
15671c6e | 318 | SCM option = SCM_PRINT_KEYWORD_STYLE; |
475fa9a5 | 319 | |
475fa9a5 MV |
320 | if (scm_is_false (option)) |
321 | return 0; | |
322 | if (scm_is_eq (option, sym_reader)) | |
323 | return scm_is_true (SCM_PACK (SCM_KEYWORD_STYLE)); | |
324 | return 1; | |
325 | } | |
326 | ||
2e9fc9fc AW |
327 | #define INITIAL_IDENTIFIER_MASK \ |
328 | (UC_CATEGORY_MASK_Lu | UC_CATEGORY_MASK_Ll | UC_CATEGORY_MASK_Lt \ | |
329 | | UC_CATEGORY_MASK_Lm | UC_CATEGORY_MASK_Lo | UC_CATEGORY_MASK_Mn \ | |
330 | | UC_CATEGORY_MASK_Nl | UC_CATEGORY_MASK_No | UC_CATEGORY_MASK_Pd \ | |
331 | | UC_CATEGORY_MASK_Pc | UC_CATEGORY_MASK_Po | UC_CATEGORY_MASK_Sc \ | |
332 | | UC_CATEGORY_MASK_Sm | UC_CATEGORY_MASK_Sk | UC_CATEGORY_MASK_So \ | |
333 | | UC_CATEGORY_MASK_Co) | |
334 | ||
335 | #define SUBSEQUENT_IDENTIFIER_MASK \ | |
336 | (INITIAL_IDENTIFIER_MASK \ | |
337 | | UC_CATEGORY_MASK_Nd | UC_CATEGORY_MASK_Mc | UC_CATEGORY_MASK_Me) | |
338 | ||
15671c6e AW |
339 | static int |
340 | symbol_has_extended_read_syntax (SCM sym) | |
6662998f | 341 | { |
15671c6e AW |
342 | size_t pos, len = scm_i_symbol_length (sym); |
343 | scm_t_wchar c; | |
344 | ||
345 | /* The empty symbol. */ | |
346 | if (len == 0) | |
347 | return 1; | |
348 | ||
349 | c = scm_i_symbol_ref (sym, 0); | |
350 | ||
351 | /* Single dot; conflicts with dotted-pair notation. */ | |
352 | if (len == 1 && c == '.') | |
353 | return 1; | |
354 | ||
355 | /* Other initial-character constraints. */ | |
2e9fc9fc | 356 | if (c == '\'' || c == '`' || c == ',' || c == '"' || c == ';' || c == '#') |
15671c6e AW |
357 | return 1; |
358 | ||
359 | /* Keywords can be identified by trailing colons too. */ | |
360 | if (c == ':' || scm_i_symbol_ref (sym, len - 1) == ':') | |
361 | return quote_keywordish_symbols (); | |
362 | ||
363 | /* Number-ish symbols. */ | |
364 | if (scm_is_true (scm_i_string_to_number (scm_symbol_to_string (sym), 10))) | |
365 | return 1; | |
366 | ||
2e9fc9fc AW |
367 | /* Other disallowed first characters. */ |
368 | if (!uc_is_general_category_withtable (c, INITIAL_IDENTIFIER_MASK)) | |
369 | return 1; | |
370 | ||
371 | /* Otherwise, any character that's in the identifier category mask is | |
372 | fine to pass through as-is, provided it's not one of the ASCII | |
373 | delimiters like `;'. */ | |
374 | for (pos = 1; pos < len; pos++) | |
6662998f | 375 | { |
2e9fc9fc AW |
376 | c = scm_i_symbol_ref (sym, pos); |
377 | if (!uc_is_general_category_withtable (c, SUBSEQUENT_IDENTIFIER_MASK)) | |
378 | return 1; | |
379 | else if (c == '"' || c == ';' || c == '#') | |
380 | return 1; | |
6662998f | 381 | } |
c6b49e89 | 382 | |
15671c6e AW |
383 | return 0; |
384 | } | |
385 | ||
386 | static void | |
387 | print_normal_symbol (SCM sym, SCM port) | |
388 | { | |
389 | scm_display (scm_symbol_to_string (sym), port); | |
390 | } | |
391 | ||
15671c6e AW |
392 | static void |
393 | print_extended_symbol (SCM sym, SCM port) | |
394 | { | |
395 | size_t pos, len; | |
396 | scm_t_string_failed_conversion_handler strategy; | |
397 | ||
398 | len = scm_i_symbol_length (sym); | |
478848cb | 399 | strategy = PORT_CONVERSION_HANDLER (port); |
15671c6e AW |
400 | |
401 | scm_lfwrite ("#{", 2, port); | |
402 | ||
403 | for (pos = 0; pos < len; pos++) | |
404 | { | |
405 | scm_t_wchar c = scm_i_symbol_ref (sym, pos); | |
406 | ||
2e9fc9fc AW |
407 | if (uc_is_general_category_withtable (c, |
408 | SUBSEQUENT_IDENTIFIER_MASK | |
409 | | UC_CATEGORY_MASK_Zs)) | |
15671c6e | 410 | { |
15671c6e AW |
411 | if (!display_character (c, port, strategy)) |
412 | scm_encoding_error ("print_extended_symbol", errno, | |
413 | "cannot convert to output locale", | |
414 | port, SCM_MAKE_CHAR (c)); | |
2e9fc9fc AW |
415 | } |
416 | else | |
417 | { | |
418 | display_string ("\\x", 1, 2, port, iconveh_question_mark); | |
419 | scm_intprint (c, 16, port); | |
420 | display_character (';', port, iconveh_question_mark); | |
15671c6e AW |
421 | } |
422 | } | |
423 | ||
424 | scm_lfwrite ("}#", 2, port); | |
425 | } | |
426 | ||
427 | /* FIXME: allow R6RS hex escapes instead of #{...}#. */ | |
428 | void | |
429 | scm_i_print_symbol_name (SCM sym, SCM port) | |
430 | { | |
431 | if (symbol_has_extended_read_syntax (sym)) | |
432 | print_extended_symbol (sym, port); | |
433 | else | |
434 | print_normal_symbol (sym, port); | |
6662998f MV |
435 | } |
436 | ||
e23106d5 MG |
437 | void |
438 | scm_print_symbol_name (const char *str, size_t len, SCM port) | |
439 | { | |
440 | SCM symbol = scm_from_locale_symboln (str, len); | |
ab33782c | 441 | scm_i_print_symbol_name (symbol, port); |
e23106d5 MG |
442 | } |
443 | ||
c62fbfe1 | 444 | /* Print generally. Handles both write and display according to PSTATE. |
0f2d19dd | 445 | */ |
8b840115 MD |
446 | SCM_GPROC(s_write, "write", 1, 1, 0, scm_write, g_write); |
447 | SCM_GPROC(s_display, "display", 1, 1, 0, scm_display, g_display); | |
1cc91f1b | 448 | |
d232520a MV |
449 | static void iprin1 (SCM exp, SCM port, scm_print_state *pstate); |
450 | ||
dea901d6 MG |
451 | |
452 | /* Print a character as an octal or hex escape. */ | |
453 | #define PRINT_CHAR_ESCAPE(i, port) \ | |
454 | do \ | |
455 | { \ | |
456 | if (!SCM_R6RS_ESCAPES_P) \ | |
457 | scm_intprint (i, 8, port); \ | |
458 | else \ | |
459 | { \ | |
460 | scm_puts ("x", port); \ | |
461 | scm_intprint (i, 16, port); \ | |
462 | } \ | |
463 | } \ | |
464 | while (0) | |
465 | ||
466 | ||
0f2d19dd | 467 | void |
1bbd0b84 | 468 | scm_iprin1 (SCM exp, SCM port, scm_print_state *pstate) |
d232520a MV |
469 | { |
470 | if (pstate->fancyp | |
471 | && scm_is_true (scm_memq (exp, pstate->highlight_objects))) | |
472 | { | |
81ae25da | 473 | scm_display (SCM_PRINT_HIGHLIGHT_PREFIX, port); |
d232520a | 474 | iprin1 (exp, port, pstate); |
81ae25da | 475 | scm_display (SCM_PRINT_HIGHLIGHT_SUFFIX, port); |
d232520a MV |
476 | } |
477 | else | |
478 | iprin1 (exp, port, pstate); | |
479 | } | |
480 | ||
481 | static void | |
482 | iprin1 (SCM exp, SCM port, scm_print_state *pstate) | |
0f2d19dd | 483 | { |
54778cd3 | 484 | switch (SCM_ITAG3 (exp)) |
0f2d19dd | 485 | { |
e34f941a DH |
486 | case scm_tc3_tc7_1: |
487 | case scm_tc3_tc7_2: | |
488 | /* These tc3 tags should never occur in an immediate value. They are | |
489 | * only used in cell types of non-immediates, i. e. the value returned | |
490 | * by SCM_CELL_TYPE (exp) can use these tags. | |
491 | */ | |
492 | scm_ipruk ("immediate", exp, port); | |
493 | break; | |
494 | case scm_tc3_int_1: | |
495 | case scm_tc3_int_2: | |
e11e83f3 | 496 | scm_intprint (SCM_I_INUM (exp), 10, port); |
0f2d19dd | 497 | break; |
e34f941a | 498 | case scm_tc3_imm24: |
7866a09b | 499 | if (SCM_CHARP (exp)) |
0f2d19dd | 500 | { |
b7f3516f | 501 | if (SCM_WRITINGP (pstate)) |
07f49ac7 LC |
502 | write_character (SCM_CHAR (exp), port, 0); |
503 | else | |
b7f3516f | 504 | { |
07f49ac7 | 505 | if (!display_character (SCM_CHAR (exp), port, |
478848cb | 506 | PORT_CONVERSION_HANDLER (port))) |
07f49ac7 LC |
507 | scm_encoding_error (__func__, errno, |
508 | "cannot convert to output locale", | |
6851d3be | 509 | port, exp); |
b7f3516f | 510 | } |
0f2d19dd | 511 | } |
a51ea417 | 512 | else if (SCM_IFLAGP (exp) |
e17d318f DH |
513 | && ((size_t) SCM_IFLAGNUM (exp) < (sizeof iflagnames / sizeof (char *)))) |
514 | { | |
515 | scm_puts (iflagnames [SCM_IFLAGNUM (exp)], port); | |
516 | } | |
0f2d19dd | 517 | else |
e34f941a DH |
518 | { |
519 | /* unknown immediate value */ | |
520 | scm_ipruk ("immediate", exp, port); | |
521 | } | |
0f2d19dd | 522 | break; |
e34f941a | 523 | case scm_tc3_cons: |
0f2d19dd JB |
524 | switch (SCM_TYP7 (exp)) |
525 | { | |
904a077d MV |
526 | case scm_tcs_struct: |
527 | { | |
528 | ENTER_NESTED_DATA (pstate, exp, circref); | |
529 | if (SCM_OBJ_CLASS_FLAGS (exp) & SCM_CLASSF_GOOPS) | |
530 | { | |
531 | SCM pwps, print = pstate->writingp ? g_write : g_display; | |
b2b33168 | 532 | if (SCM_UNPACK (print) == 0) |
904a077d | 533 | goto print_struct; |
dfd03fb9 | 534 | pwps = scm_i_port_with_print_state (port, pstate->handle); |
7663c008 | 535 | pstate->revealed = 1; |
904a077d MV |
536 | scm_call_generic_2 (print, exp, pwps); |
537 | } | |
538 | else | |
539 | { | |
540 | print_struct: | |
541 | scm_print_struct (exp, port, pstate); | |
542 | } | |
543 | EXIT_NESTED_DATA (pstate); | |
544 | } | |
545 | break; | |
0f2d19dd JB |
546 | case scm_tcs_cons_imcar: |
547 | case scm_tcs_cons_nimcar: | |
c62fbfe1 MD |
548 | ENTER_NESTED_DATA (pstate, exp, circref); |
549 | scm_iprlist ("(", exp, ')', port, pstate); | |
550 | EXIT_NESTED_DATA (pstate); | |
a51ea417 MD |
551 | break; |
552 | circref: | |
c62fbfe1 | 553 | print_circref (port, pstate, exp); |
0f2d19dd | 554 | break; |
534c55a9 DH |
555 | case scm_tc7_number: |
556 | switch SCM_TYP16 (exp) { | |
557 | case scm_tc16_big: | |
558 | scm_bigprint (exp, port, pstate); | |
559 | break; | |
560 | case scm_tc16_real: | |
561 | scm_print_real (exp, port, pstate); | |
562 | break; | |
563 | case scm_tc16_complex: | |
564 | scm_print_complex (exp, port, pstate); | |
565 | break; | |
f92e85f7 MV |
566 | case scm_tc16_fraction: |
567 | scm_i_print_fraction (exp, port, pstate); | |
568 | break; | |
534c55a9 DH |
569 | } |
570 | break; | |
9c44cd45 MG |
571 | case scm_tc7_string: |
572 | if (SCM_WRITINGP (pstate)) | |
573 | { | |
07f49ac7 | 574 | size_t len, i; |
9c44cd45 | 575 | |
f4bc4e59 | 576 | display_character ('"', port, iconveh_question_mark); |
9c44cd45 MG |
577 | len = scm_i_string_length (exp); |
578 | for (i = 0; i < len; ++i) | |
07f49ac7 LC |
579 | write_character (scm_i_string_ref (exp, i), port, 1); |
580 | ||
f4bc4e59 | 581 | display_character ('"', port, iconveh_question_mark); |
9c44cd45 MG |
582 | scm_remember_upto_here_1 (exp); |
583 | } | |
584 | else | |
f4bc4e59 LC |
585 | { |
586 | size_t len, printed; | |
587 | ||
588 | len = scm_i_string_length (exp); | |
589 | printed = display_string (scm_i_string_data (exp), | |
590 | scm_i_is_narrow_string (exp), | |
591 | len, port, | |
478848cb | 592 | PORT_CONVERSION_HANDLER (port)); |
f4bc4e59 | 593 | if (SCM_UNLIKELY (printed < len)) |
f4bc4e59 LC |
594 | scm_encoding_error (__func__, errno, |
595 | "cannot convert to output locale", | |
6851d3be | 596 | port, scm_c_string_ref (exp, printed)); |
f4bc4e59 LC |
597 | } |
598 | ||
9c44cd45 MG |
599 | scm_remember_upto_here_1 (exp); |
600 | break; | |
28b06554 | 601 | case scm_tc7_symbol: |
cc95e00a | 602 | if (scm_i_symbol_is_interned (exp)) |
9ff28a13 | 603 | { |
e23106d5 | 604 | scm_i_print_symbol_name (exp, port); |
9ff28a13 MV |
605 | scm_remember_upto_here_1 (exp); |
606 | } | |
607 | else | |
608 | { | |
609 | scm_puts ("#<uninterned-symbol ", port); | |
e23106d5 | 610 | scm_i_print_symbol_name (exp, port); |
9ff28a13 | 611 | scm_putc (' ', port); |
0345e278 | 612 | scm_uintprint (SCM_UNPACK (exp), 16, port); |
9ff28a13 MV |
613 | scm_putc ('>', port); |
614 | } | |
6662998f | 615 | break; |
e5aca4b5 MV |
616 | case scm_tc7_variable: |
617 | scm_i_variable_print (exp, port, pstate); | |
618 | break; | |
2fb924f6 AW |
619 | case scm_tc7_program: |
620 | scm_i_program_print (exp, port, pstate); | |
621 | break; | |
5b46a8c2 LC |
622 | case scm_tc7_pointer: |
623 | scm_i_pointer_print (exp, port, pstate); | |
e2c2a699 | 624 | break; |
c99de5aa AW |
625 | case scm_tc7_hashtable: |
626 | scm_i_hashtable_print (exp, port, pstate); | |
627 | break; | |
9ea31741 AW |
628 | case scm_tc7_fluid: |
629 | scm_i_fluid_print (exp, port, pstate); | |
630 | break; | |
45cf2428 AW |
631 | case scm_tc7_dynamic_state: |
632 | scm_i_dynamic_state_print (exp, port, pstate); | |
633 | break; | |
6f3b0cc2 AW |
634 | case scm_tc7_frame: |
635 | scm_i_frame_print (exp, port, pstate); | |
636 | break; | |
637 | case scm_tc7_objcode: | |
638 | scm_i_objcode_print (exp, port, pstate); | |
639 | break; | |
640 | case scm_tc7_vm: | |
641 | scm_i_vm_print (exp, port, pstate); | |
642 | break; | |
643 | case scm_tc7_vm_cont: | |
644 | scm_i_vm_cont_print (exp, port, pstate); | |
645 | break; | |
bbb2ecd1 AW |
646 | case scm_tc7_prompt: |
647 | scm_i_prompt_print (exp, port, pstate); | |
648 | break; | |
649 | case scm_tc7_with_fluids: | |
650 | scm_i_with_fluids_print (exp, port, pstate); | |
651 | break; | |
b2637c98 AW |
652 | case scm_tc7_array: |
653 | ENTER_NESTED_DATA (pstate, exp, circref); | |
654 | scm_i_print_array (exp, port, pstate); | |
88c0a1d5 | 655 | EXIT_NESTED_DATA (pstate); |
b2637c98 AW |
656 | break; |
657 | case scm_tc7_bytevector: | |
658 | scm_i_print_bytevector (exp, port, pstate); | |
659 | break; | |
ff1feca9 AW |
660 | case scm_tc7_bitvector: |
661 | scm_i_print_bitvector (exp, port, pstate); | |
662 | break; | |
0f2d19dd | 663 | case scm_tc7_wvect: |
c62fbfe1 | 664 | ENTER_NESTED_DATA (pstate, exp, circref); |
0f2d19dd | 665 | if (SCM_IS_WHVEC (exp)) |
b7f3516f | 666 | scm_puts ("#wh(", port); |
0f2d19dd | 667 | else |
b7f3516f | 668 | scm_puts ("#w(", port); |
0f2d19dd | 669 | goto common_vector_printer; |
0f2d19dd | 670 | case scm_tc7_vector: |
c62fbfe1 | 671 | ENTER_NESTED_DATA (pstate, exp, circref); |
b7f3516f | 672 | scm_puts ("#(", port); |
0f2d19dd | 673 | common_vector_printer: |
9fbaf27c | 674 | { |
c014a02e | 675 | register long i; |
4057a3e0 | 676 | long last = SCM_SIMPLE_VECTOR_LENGTH (exp) - 1; |
9fbaf27c | 677 | int cutp = 0; |
4057a3e0 MV |
678 | if (pstate->fancyp |
679 | && SCM_SIMPLE_VECTOR_LENGTH (exp) > pstate->length) | |
9fbaf27c MD |
680 | { |
681 | last = pstate->length - 1; | |
682 | cutp = 1; | |
683 | } | |
c367c4b4 | 684 | if (SCM_I_WVECTP (exp)) |
9fbaf27c | 685 | { |
c367c4b4 LC |
686 | /* Elements of weak vectors may not be accessed via the |
687 | `SIMPLE_VECTOR_REF ()' macro. */ | |
688 | for (i = 0; i < last; ++i) | |
689 | { | |
690 | scm_iprin1 (scm_c_vector_ref (exp, i), | |
691 | port, pstate); | |
692 | scm_putc (' ', port); | |
693 | } | |
9fbaf27c | 694 | } |
c367c4b4 LC |
695 | else |
696 | { | |
697 | for (i = 0; i < last; ++i) | |
698 | { | |
699 | scm_iprin1 (SCM_SIMPLE_VECTOR_REF (exp, i), port, pstate); | |
700 | scm_putc (' ', port); | |
701 | } | |
702 | } | |
703 | ||
9fbaf27c MD |
704 | if (i == last) |
705 | { | |
706 | /* CHECK_INTS; */ | |
c367c4b4 | 707 | scm_iprin1 (scm_c_vector_ref (exp, i), port, pstate); |
9fbaf27c MD |
708 | } |
709 | if (cutp) | |
b7f3516f TT |
710 | scm_puts (" ...", port); |
711 | scm_putc (')', port); | |
9fbaf27c | 712 | } |
c62fbfe1 | 713 | EXIT_NESTED_DATA (pstate); |
0f2d19dd | 714 | break; |
0f2d19dd | 715 | case scm_tc7_port: |
5ca6dc39 JB |
716 | { |
717 | register long i = SCM_PTOBNUM (exp); | |
718 | if (i < scm_numptob | |
719 | && scm_ptobs[i].print | |
720 | && (scm_ptobs[i].print) (exp, port, pstate)) | |
a51ea417 | 721 | break; |
5ca6dc39 JB |
722 | goto punk; |
723 | } | |
724 | case scm_tc7_smob: | |
7a7f7c53 DH |
725 | ENTER_NESTED_DATA (pstate, exp, circref); |
726 | SCM_SMOB_DESCRIPTOR (exp).print (exp, port, pstate); | |
727 | EXIT_NESTED_DATA (pstate); | |
728 | break; | |
0f2d19dd | 729 | default: |
314b8716 | 730 | /* case scm_tcs_closures: */ |
a51ea417 MD |
731 | punk: |
732 | scm_ipruk ("type", exp, port); | |
0f2d19dd JB |
733 | } |
734 | } | |
735 | } | |
736 | ||
c62fbfe1 MD |
737 | /* Print states are necessary for circular reference safe printing. |
738 | * They are also expensive to allocate. Therefore print states are | |
739 | * kept in a pool so that they can be reused. | |
740 | */ | |
1cc91f1b | 741 | |
bb35f315 MV |
742 | /* The PORT argument can also be a print-state/port pair, which will |
743 | * then be used instead of allocating a new print state. This is | |
744 | * useful for continuing a chain of print calls from Scheme. */ | |
745 | ||
a51ea417 | 746 | void |
1bbd0b84 | 747 | scm_prin1 (SCM exp, SCM port, int writingp) |
a51ea417 | 748 | { |
c4f37e80 MV |
749 | SCM handle = SCM_BOOL_F; /* Will GC protect the handle whilst unlinked */ |
750 | SCM pstate_scm; | |
c62fbfe1 | 751 | scm_print_state *pstate; |
15635be5 | 752 | int old_writingp; |
c62fbfe1 | 753 | |
bb35f315 MV |
754 | /* If PORT is a print-state/port pair, use that. Else create a new |
755 | print-state. */ | |
c4f37e80 | 756 | |
0c95b57d | 757 | if (SCM_PORT_WITH_PS_P (port)) |
bb35f315 | 758 | { |
52235e71 MD |
759 | pstate_scm = SCM_PORT_WITH_PS_PS (port); |
760 | port = SCM_PORT_WITH_PS_PORT (port); | |
bb35f315 MV |
761 | } |
762 | else | |
c62fbfe1 | 763 | { |
c4f37e80 | 764 | /* First try to allocate a print state from the pool */ |
9de87eea | 765 | scm_i_pthread_mutex_lock (&print_state_mutex); |
d2e53ed6 | 766 | if (!scm_is_null (print_state_pool)) |
c4f37e80 | 767 | { |
d5cf5324 DH |
768 | handle = print_state_pool; |
769 | print_state_pool = SCM_CDR (print_state_pool); | |
c4f37e80 | 770 | } |
9de87eea | 771 | scm_i_pthread_mutex_unlock (&print_state_mutex); |
7888309b | 772 | if (scm_is_false (handle)) |
d5cf5324 | 773 | handle = scm_list_1 (make_print_state ()); |
c4f37e80 | 774 | pstate_scm = SCM_CAR (handle); |
c62fbfe1 | 775 | } |
c62fbfe1 | 776 | |
c4f37e80 | 777 | pstate = SCM_PRINT_STATE (pstate_scm); |
15635be5 | 778 | old_writingp = pstate->writingp; |
c62fbfe1 MD |
779 | pstate->writingp = writingp; |
780 | scm_iprin1 (exp, port, pstate); | |
15635be5 | 781 | pstate->writingp = old_writingp; |
c62fbfe1 | 782 | |
bb35f315 MV |
783 | /* Return print state to pool if it has been created above and |
784 | hasn't escaped to Scheme. */ | |
785 | ||
7888309b | 786 | if (scm_is_true (handle) && !pstate->revealed) |
c4f37e80 | 787 | { |
9de87eea | 788 | scm_i_pthread_mutex_lock (&print_state_mutex); |
d5cf5324 DH |
789 | SCM_SETCDR (handle, print_state_pool); |
790 | print_state_pool = handle; | |
9de87eea | 791 | scm_i_pthread_mutex_unlock (&print_state_mutex); |
c4f37e80 | 792 | } |
a51ea417 MD |
793 | } |
794 | ||
f4bc4e59 LC |
795 | /* Convert codepoint CH to UTF-8 and store the result in UTF8. Return |
796 | the number of bytes of the UTF-8-encoded string. */ | |
797 | static size_t | |
798 | codepoint_to_utf8 (scm_t_wchar ch, scm_t_uint8 utf8[4]) | |
9c44cd45 | 799 | { |
f4bc4e59 LC |
800 | size_t len; |
801 | scm_t_uint32 codepoint; | |
802 | ||
803 | codepoint = (scm_t_uint32) ch; | |
07f49ac7 | 804 | |
f4bc4e59 | 805 | if (codepoint <= 0x7f) |
07f49ac7 | 806 | { |
f4bc4e59 LC |
807 | len = 1; |
808 | utf8[0] = (scm_t_uint8) codepoint; | |
809 | } | |
810 | else if (codepoint <= 0x7ffUL) | |
811 | { | |
812 | len = 2; | |
813 | utf8[0] = 0xc0 | (codepoint >> 6); | |
814 | utf8[1] = 0x80 | (codepoint & 0x3f); | |
815 | } | |
816 | else if (codepoint <= 0xffffUL) | |
817 | { | |
818 | len = 3; | |
819 | utf8[0] = 0xe0 | (codepoint >> 12); | |
820 | utf8[1] = 0x80 | ((codepoint >> 6) & 0x3f); | |
821 | utf8[2] = 0x80 | (codepoint & 0x3f); | |
07f49ac7 LC |
822 | } |
823 | else | |
824 | { | |
f4bc4e59 LC |
825 | len = 4; |
826 | utf8[0] = 0xf0 | (codepoint >> 18); | |
827 | utf8[1] = 0x80 | ((codepoint >> 12) & 0x3f); | |
828 | utf8[2] = 0x80 | ((codepoint >> 6) & 0x3f); | |
829 | utf8[3] = 0x80 | (codepoint & 0x3f); | |
830 | } | |
831 | ||
832 | return len; | |
833 | } | |
834 | ||
f4bc4e59 LC |
835 | #define STR_REF(s, x) \ |
836 | (narrow_p \ | |
837 | ? (scm_t_wchar) ((unsigned char *) (s))[x] \ | |
838 | : ((scm_t_wchar *) (s))[x]) | |
839 | ||
7b292a9d LC |
840 | /* Write STR to PORT as UTF-8. STR is a LEN-codepoint string; it is |
841 | narrow if NARROW_P is true, wide otherwise. Return LEN. */ | |
842 | static size_t | |
843 | display_string_as_utf8 (const void *str, int narrow_p, size_t len, | |
844 | SCM port) | |
845 | { | |
846 | size_t printed = 0; | |
847 | ||
848 | while (len > printed) | |
849 | { | |
850 | size_t utf8_len, i; | |
851 | char *input, utf8_buf[256]; | |
852 | ||
853 | /* Convert STR to UTF-8. */ | |
854 | for (i = printed, utf8_len = 0, input = utf8_buf; | |
855 | i < len && utf8_len + 4 < sizeof (utf8_buf); | |
856 | i++) | |
857 | { | |
858 | utf8_len += codepoint_to_utf8 (STR_REF (str, i), | |
859 | (scm_t_uint8 *) input); | |
860 | input = utf8_buf + utf8_len; | |
861 | } | |
862 | ||
863 | /* INPUT was successfully converted, entirely; print the | |
864 | result. */ | |
865 | scm_lfwrite (utf8_buf, utf8_len, port); | |
866 | printed += i - printed; | |
867 | } | |
868 | ||
869 | assert (printed == len); | |
870 | ||
871 | return len; | |
872 | } | |
873 | ||
874 | /* Convert STR through PORT's output conversion descriptor and write the | |
875 | output to PORT. Return the number of codepoints written. */ | |
876 | static size_t | |
877 | display_string_using_iconv (const void *str, int narrow_p, size_t len, | |
878 | SCM port, | |
879 | scm_t_string_failed_conversion_handler strategy) | |
880 | { | |
f4bc4e59 LC |
881 | size_t printed; |
882 | scm_t_port *pt; | |
883 | ||
884 | pt = SCM_PTAB_ENTRY (port); | |
885 | ||
f4bc4e59 LC |
886 | printed = 0; |
887 | ||
888 | while (len > printed) | |
889 | { | |
890 | size_t done, utf8_len, input_left, output_left, i; | |
891 | size_t codepoints_read, output_len; | |
892 | char *input, *output; | |
893 | char utf8_buf[256], encoded_output[256]; | |
894 | size_t offsets[256]; | |
895 | ||
896 | /* Convert STR to UTF-8. */ | |
897 | for (i = printed, utf8_len = 0, input = utf8_buf; | |
898 | i < len && utf8_len + 4 < sizeof (utf8_buf); | |
899 | i++) | |
07f49ac7 | 900 | { |
f4bc4e59 LC |
901 | offsets[utf8_len] = i; |
902 | utf8_len += codepoint_to_utf8 (STR_REF (str, i), | |
903 | (scm_t_uint8 *) input); | |
904 | input = utf8_buf + utf8_len; | |
905 | } | |
906 | ||
907 | input = utf8_buf; | |
908 | input_left = utf8_len; | |
909 | ||
910 | output = encoded_output; | |
911 | output_left = sizeof (encoded_output); | |
912 | ||
913 | done = iconv (pt->output_cd, &input, &input_left, | |
914 | &output, &output_left); | |
07f49ac7 | 915 | |
f4bc4e59 LC |
916 | output_len = sizeof (encoded_output) - output_left; |
917 | ||
918 | if (SCM_UNLIKELY (done == (size_t) -1)) | |
919 | { | |
b2548e23 AW |
920 | int errno_save = errno; |
921 | ||
f4bc4e59 LC |
922 | /* Reset the `iconv' state. */ |
923 | iconv (pt->output_cd, NULL, NULL, NULL, NULL); | |
924 | ||
7174bc08 LC |
925 | /* Print the OUTPUT_LEN bytes successfully converted. */ |
926 | scm_lfwrite (encoded_output, output_len, port); | |
927 | ||
928 | /* See how many input codepoints these OUTPUT_LEN bytes | |
929 | corresponds to. */ | |
930 | codepoints_read = offsets[input - utf8_buf] - printed; | |
931 | printed += codepoints_read; | |
932 | ||
b2548e23 | 933 | if (errno_save == EILSEQ && |
f4bc4e59 | 934 | strategy != SCM_FAILED_CONVERSION_ERROR) |
07f49ac7 | 935 | { |
f4bc4e59 LC |
936 | /* Conversion failed somewhere in INPUT and we want to |
937 | escape or substitute the offending input character. */ | |
938 | ||
f4bc4e59 | 939 | if (strategy == SCM_FAILED_CONVERSION_ESCAPE_SEQUENCE) |
f1ee6d54 | 940 | { |
f4bc4e59 LC |
941 | scm_t_wchar ch; |
942 | ||
943 | /* Find CH, the offending codepoint, and escape it. */ | |
944 | ch = STR_REF (str, offsets[input - utf8_buf]); | |
945 | write_character_escaped (ch, 1, port); | |
f1ee6d54 | 946 | } |
07f49ac7 | 947 | else |
f4bc4e59 LC |
948 | /* STRATEGY is `SCM_FAILED_CONVERSION_QUESTION_MARK'. */ |
949 | display_string ("?", 1, 1, port, strategy); | |
9c44cd45 | 950 | |
f4bc4e59 LC |
951 | printed++; |
952 | } | |
953 | else | |
954 | /* Something bad happened that we can't handle: bail out. */ | |
955 | break; | |
07f49ac7 LC |
956 | } |
957 | else | |
f4bc4e59 LC |
958 | { |
959 | /* INPUT was successfully converted, entirely; print the | |
960 | result. */ | |
961 | scm_lfwrite (encoded_output, output_len, port); | |
962 | codepoints_read = i - printed; | |
963 | printed += codepoints_read; | |
964 | } | |
07f49ac7 LC |
965 | } |
966 | ||
967 | return printed; | |
7b292a9d LC |
968 | } |
969 | ||
f4bc4e59 | 970 | #undef STR_REF |
7b292a9d LC |
971 | |
972 | /* Display the LEN codepoints in STR to PORT according to STRATEGY; | |
973 | return the number of codepoints successfully displayed. If NARROW_P, | |
974 | then STR is interpreted as a sequence of `char', denoting a Latin-1 | |
975 | string; otherwise it's interpreted as a sequence of | |
976 | `scm_t_wchar'. */ | |
977 | static size_t | |
978 | display_string (const void *str, int narrow_p, | |
979 | size_t len, SCM port, | |
980 | scm_t_string_failed_conversion_handler strategy) | |
981 | ||
982 | { | |
983 | scm_t_port *pt; | |
984 | ||
985 | pt = SCM_PTAB_ENTRY (port); | |
986 | ||
987 | if (pt->output_cd == (iconv_t) -1) | |
988 | /* Initialize the conversion descriptors, if needed. */ | |
989 | scm_i_set_port_encoding_x (port, pt->encoding); | |
990 | ||
991 | /* FIXME: In 2.1, add a flag to determine whether a port is UTF-8. */ | |
992 | if (pt->output_cd == (iconv_t) -1) | |
993 | return display_string_as_utf8 (str, narrow_p, len, port); | |
994 | else | |
995 | return display_string_using_iconv (str, narrow_p, len, | |
996 | port, strategy); | |
f4bc4e59 LC |
997 | } |
998 | ||
999 | /* Attempt to display CH to PORT according to STRATEGY. Return non-zero | |
1000 | if CH was successfully displayed, zero otherwise (e.g., if it was not | |
1001 | representable in PORT's encoding.) */ | |
1002 | static int | |
1003 | display_character (scm_t_wchar ch, SCM port, | |
1004 | scm_t_string_failed_conversion_handler strategy) | |
1005 | { | |
1006 | return display_string (&ch, 0, 1, port, strategy) == 1; | |
07f49ac7 LC |
1007 | } |
1008 | ||
33d92fe6 LC |
1009 | /* Attempt to pretty-print CH, a combining character, to PORT. Return |
1010 | zero upon failure, non-zero otherwise. The idea is to print CH above | |
1011 | a dotted circle to make it more visible. */ | |
1012 | static int | |
1013 | write_combining_character (scm_t_wchar ch, SCM port) | |
1014 | { | |
f4bc4e59 LC |
1015 | scm_t_wchar str[2]; |
1016 | ||
1017 | str[0] = SCM_CODEPOINT_DOTTED_CIRCLE; | |
1018 | str[1] = ch; | |
1019 | ||
1020 | return display_string (str, 0, 2, port, iconveh_error) == 2; | |
1021 | } | |
33d92fe6 | 1022 | |
f4bc4e59 LC |
1023 | /* Write CH to PORT in its escaped form, using the string escape syntax |
1024 | if STRING_ESCAPES_P is non-zero. */ | |
1025 | static void | |
1026 | write_character_escaped (scm_t_wchar ch, int string_escapes_p, SCM port) | |
1027 | { | |
1028 | if (string_escapes_p) | |
33d92fe6 | 1029 | { |
f4bc4e59 LC |
1030 | /* Represent CH using the in-string escape syntax. */ |
1031 | ||
1032 | static const char hex[] = "0123456789abcdef"; | |
1033 | static const char escapes[7] = "abtnvfr"; | |
1034 | char buf[9]; | |
1035 | ||
1036 | if (ch >= 0x07 && ch <= 0x0D && ch != 0x0A) | |
33d92fe6 | 1037 | { |
f4bc4e59 LC |
1038 | /* Use special escapes for some C0 controls. */ |
1039 | buf[0] = '\\'; | |
1040 | buf[1] = escapes[ch - 0x07]; | |
1041 | scm_lfwrite (buf, 2, port); | |
1042 | } | |
1043 | else if (!SCM_R6RS_ESCAPES_P) | |
1044 | { | |
1045 | if (ch <= 0xFF) | |
1046 | { | |
1047 | buf[0] = '\\'; | |
1048 | buf[1] = 'x'; | |
1049 | buf[2] = hex[ch / 16]; | |
1050 | buf[3] = hex[ch % 16]; | |
1051 | scm_lfwrite (buf, 4, port); | |
1052 | } | |
1053 | else if (ch <= 0xFFFF) | |
1054 | { | |
1055 | buf[0] = '\\'; | |
1056 | buf[1] = 'u'; | |
1057 | buf[2] = hex[(ch & 0xF000) >> 12]; | |
1058 | buf[3] = hex[(ch & 0xF00) >> 8]; | |
1059 | buf[4] = hex[(ch & 0xF0) >> 4]; | |
1060 | buf[5] = hex[(ch & 0xF)]; | |
1061 | scm_lfwrite (buf, 6, port); | |
1062 | } | |
1063 | else if (ch > 0xFFFF) | |
1064 | { | |
1065 | buf[0] = '\\'; | |
1066 | buf[1] = 'U'; | |
1067 | buf[2] = hex[(ch & 0xF00000) >> 20]; | |
1068 | buf[3] = hex[(ch & 0xF0000) >> 16]; | |
1069 | buf[4] = hex[(ch & 0xF000) >> 12]; | |
1070 | buf[5] = hex[(ch & 0xF00) >> 8]; | |
1071 | buf[6] = hex[(ch & 0xF0) >> 4]; | |
1072 | buf[7] = hex[(ch & 0xF)]; | |
1073 | scm_lfwrite (buf, 8, port); | |
1074 | } | |
33d92fe6 LC |
1075 | } |
1076 | else | |
f4bc4e59 LC |
1077 | { |
1078 | /* Print an R6RS variable-length hex escape: "\xNNNN;". */ | |
1079 | scm_t_wchar ch2 = ch; | |
1080 | ||
1081 | int i = 8; | |
1082 | buf[i] = ';'; | |
1083 | i --; | |
1084 | if (ch == 0) | |
1085 | buf[i--] = '0'; | |
1086 | else | |
1087 | while (ch2 > 0) | |
1088 | { | |
1089 | buf[i] = hex[ch2 & 0xF]; | |
1090 | ch2 >>= 4; | |
1091 | i --; | |
1092 | } | |
1093 | buf[i] = 'x'; | |
1094 | i --; | |
1095 | buf[i] = '\\'; | |
1096 | scm_lfwrite (buf + i, 9 - i, port); | |
1097 | } | |
33d92fe6 LC |
1098 | } |
1099 | else | |
f4bc4e59 LC |
1100 | { |
1101 | /* Represent CH using the character escape syntax. */ | |
1102 | const char *name; | |
33d92fe6 | 1103 | |
f4bc4e59 LC |
1104 | name = scm_i_charname (SCM_MAKE_CHAR (ch)); |
1105 | if (name != NULL) | |
1106 | scm_puts (name, port); | |
1107 | else | |
1108 | PRINT_CHAR_ESCAPE (ch, port); | |
1109 | } | |
33d92fe6 LC |
1110 | } |
1111 | ||
07f49ac7 LC |
1112 | /* Write CH to PORT, escaping it if it's non-graphic or not |
1113 | representable in PORT's encoding. If STRING_ESCAPES_P is true and CH | |
1114 | needs to be escaped, it is escaped using the in-string escape syntax; | |
1115 | otherwise the character escape syntax is used. */ | |
1116 | static void | |
1117 | write_character (scm_t_wchar ch, SCM port, int string_escapes_p) | |
1118 | { | |
1119 | int printed = 0; | |
f4bc4e59 LC |
1120 | scm_t_string_failed_conversion_handler strategy; |
1121 | ||
478848cb | 1122 | strategy = PORT_CONVERSION_HANDLER (port); |
07f49ac7 LC |
1123 | |
1124 | if (string_escapes_p) | |
1125 | { | |
1126 | /* Check if CH deserves special treatment. */ | |
1127 | if (ch == '"' || ch == '\\') | |
1128 | { | |
f4bc4e59 LC |
1129 | display_character ('\\', port, iconveh_question_mark); |
1130 | display_character (ch, port, strategy); | |
07f49ac7 LC |
1131 | printed = 1; |
1132 | } | |
8500b186 AW |
1133 | else if (ch == '\n' && SCM_PRINT_ESCAPE_NEWLINES_P) |
1134 | { | |
1135 | display_character ('\\', port, iconveh_question_mark); | |
1136 | display_character ('n', port, strategy); | |
1137 | printed = 1; | |
1138 | } | |
07f49ac7 LC |
1139 | else if (ch == ' ' || ch == '\n') |
1140 | { | |
f4bc4e59 | 1141 | display_character (ch, port, strategy); |
07f49ac7 LC |
1142 | printed = 1; |
1143 | } | |
1144 | } | |
1145 | else | |
33d92fe6 | 1146 | { |
f4bc4e59 | 1147 | display_string ("#\\", 1, 2, port, iconveh_question_mark); |
33d92fe6 LC |
1148 | |
1149 | if (uc_combining_class (ch) != UC_CCC_NR) | |
1150 | /* Character is a combining character, so attempt to | |
1151 | pretty-print it. */ | |
1152 | printed = write_combining_character (ch, port); | |
1153 | } | |
07f49ac7 LC |
1154 | |
1155 | if (!printed | |
1156 | && uc_is_general_category_withtable (ch, | |
1157 | UC_CATEGORY_MASK_L | | |
1158 | UC_CATEGORY_MASK_M | | |
1159 | UC_CATEGORY_MASK_N | | |
1160 | UC_CATEGORY_MASK_P | | |
1161 | UC_CATEGORY_MASK_S)) | |
1162 | /* CH is graphic; attempt to display it. */ | |
1163 | printed = display_character (ch, port, iconveh_error); | |
1164 | ||
1165 | if (!printed) | |
f4bc4e59 LC |
1166 | /* CH isn't graphic or cannot be represented in PORT's encoding. */ |
1167 | write_character_escaped (ch, string_escapes_p, port); | |
9c44cd45 | 1168 | } |
0f2d19dd JB |
1169 | |
1170 | /* Print an integer. | |
1171 | */ | |
1cc91f1b | 1172 | |
0f2d19dd | 1173 | void |
a406c9e9 | 1174 | scm_intprint (scm_t_intmax n, int radix, SCM port) |
0f2d19dd JB |
1175 | { |
1176 | char num_buf[SCM_INTBUFLEN]; | |
b7f3516f | 1177 | scm_lfwrite (num_buf, scm_iint2str (n, radix, num_buf), port); |
0f2d19dd JB |
1178 | } |
1179 | ||
a406c9e9 MV |
1180 | void |
1181 | scm_uintprint (scm_t_uintmax n, int radix, SCM port) | |
1182 | { | |
1183 | char num_buf[SCM_INTBUFLEN]; | |
1184 | scm_lfwrite (num_buf, scm_iuint2str (n, radix, num_buf), port); | |
1185 | } | |
1186 | ||
0f2d19dd JB |
1187 | /* Print an object of unrecognized type. |
1188 | */ | |
1cc91f1b | 1189 | |
0f2d19dd | 1190 | void |
1bbd0b84 | 1191 | scm_ipruk (char *hdr, SCM ptr, SCM port) |
0f2d19dd | 1192 | { |
b7f3516f TT |
1193 | scm_puts ("#<unknown-", port); |
1194 | scm_puts (hdr, port); | |
26224b3f | 1195 | if (1) /* (scm_in_heap_p (ptr)) */ /* FIXME */ |
0f2d19dd | 1196 | { |
b7f3516f | 1197 | scm_puts (" (0x", port); |
0345e278 | 1198 | scm_uintprint (SCM_CELL_WORD_0 (ptr), 16, port); |
b7f3516f | 1199 | scm_puts (" . 0x", port); |
0345e278 | 1200 | scm_uintprint (SCM_CELL_WORD_1 (ptr), 16, port); |
b7f3516f | 1201 | scm_puts (") @", port); |
0f2d19dd | 1202 | } |
b7f3516f | 1203 | scm_puts (" 0x", port); |
0345e278 | 1204 | scm_uintprint (SCM_UNPACK (ptr), 16, port); |
b7f3516f | 1205 | scm_putc ('>', port); |
0f2d19dd JB |
1206 | } |
1207 | ||
1cc91f1b | 1208 | |
904a077d | 1209 | /* Print a list. |
22a52da1 | 1210 | */ |
0f2d19dd | 1211 | void |
34d19ef6 | 1212 | scm_iprlist (char *hdr, SCM exp, int tlr, SCM port, scm_print_state *pstate) |
0f2d19dd | 1213 | { |
c62fbfe1 | 1214 | register SCM hare, tortoise; |
c014a02e | 1215 | long floor = pstate->top - 2; |
b7f3516f | 1216 | scm_puts (hdr, port); |
0f2d19dd | 1217 | /* CHECK_INTS; */ |
c62fbfe1 MD |
1218 | if (pstate->fancyp) |
1219 | goto fancy_printing; | |
1220 | ||
1221 | /* Run a hare and tortoise so that total time complexity will be | |
1222 | O(depth * N) instead of O(N^2). */ | |
1223 | hare = SCM_CDR (exp); | |
1224 | tortoise = exp; | |
d2e53ed6 | 1225 | while (scm_is_pair (hare)) |
c62fbfe1 | 1226 | { |
bc36d050 | 1227 | if (scm_is_eq (hare, tortoise)) |
c62fbfe1 MD |
1228 | goto fancy_printing; |
1229 | hare = SCM_CDR (hare); | |
d2e53ed6 | 1230 | if (!scm_is_pair (hare)) |
c62fbfe1 MD |
1231 | break; |
1232 | hare = SCM_CDR (hare); | |
1233 | tortoise = SCM_CDR (tortoise); | |
1234 | } | |
1235 | ||
1236 | /* No cdr cycles intrinsic to this list */ | |
1237 | scm_iprin1 (SCM_CAR (exp), port, pstate); | |
d2e53ed6 | 1238 | for (exp = SCM_CDR (exp); scm_is_pair (exp); exp = SCM_CDR (exp)) |
0f2d19dd | 1239 | { |
c014a02e | 1240 | register long i; |
5ca6dc39 | 1241 | |
c62fbfe1 | 1242 | for (i = floor; i >= 0; --i) |
509759dd | 1243 | if (scm_is_eq (PSTATE_STACK_REF(pstate, i), exp)) |
c62fbfe1 MD |
1244 | goto circref; |
1245 | PUSH_REF (pstate, exp); | |
b7f3516f | 1246 | scm_putc (' ', port); |
0f2d19dd | 1247 | /* CHECK_INTS; */ |
c62fbfe1 | 1248 | scm_iprin1 (SCM_CAR (exp), port, pstate); |
0f2d19dd | 1249 | } |
c96d76b8 | 1250 | if (!SCM_NULL_OR_NIL_P (exp)) |
0f2d19dd | 1251 | { |
b7f3516f | 1252 | scm_puts (" . ", port); |
c62fbfe1 | 1253 | scm_iprin1 (exp, port, pstate); |
0f2d19dd | 1254 | } |
c62fbfe1 | 1255 | |
a51ea417 | 1256 | end: |
b7f3516f | 1257 | scm_putc (tlr, port); |
c62fbfe1 | 1258 | pstate->top = floor + 2; |
a51ea417 | 1259 | return; |
c62fbfe1 MD |
1260 | |
1261 | fancy_printing: | |
1262 | { | |
c014a02e | 1263 | long n = pstate->length; |
c62fbfe1 MD |
1264 | |
1265 | scm_iprin1 (SCM_CAR (exp), port, pstate); | |
1266 | exp = SCM_CDR (exp); --n; | |
d2e53ed6 | 1267 | for (; scm_is_pair (exp); exp = SCM_CDR (exp)) |
c62fbfe1 | 1268 | { |
c014a02e | 1269 | register unsigned long i; |
5ca6dc39 | 1270 | |
c62fbfe1 | 1271 | for (i = 0; i < pstate->top; ++i) |
509759dd | 1272 | if (scm_is_eq (PSTATE_STACK_REF(pstate, i), exp)) |
c62fbfe1 MD |
1273 | goto fancy_circref; |
1274 | if (pstate->fancyp) | |
1275 | { | |
1276 | if (n == 0) | |
1277 | { | |
b7f3516f | 1278 | scm_puts (" ...", port); |
c62fbfe1 MD |
1279 | goto skip_tail; |
1280 | } | |
1281 | else | |
1282 | --n; | |
1283 | } | |
1284 | PUSH_REF(pstate, exp); | |
1285 | ++pstate->list_offset; | |
b7f3516f | 1286 | scm_putc (' ', port); |
c62fbfe1 MD |
1287 | /* CHECK_INTS; */ |
1288 | scm_iprin1 (SCM_CAR (exp), port, pstate); | |
1289 | } | |
1290 | } | |
c96d76b8 | 1291 | if (!SCM_NULL_OR_NIL_P (exp)) |
c62fbfe1 | 1292 | { |
b7f3516f | 1293 | scm_puts (" . ", port); |
c62fbfe1 MD |
1294 | scm_iprin1 (exp, port, pstate); |
1295 | } | |
1296 | skip_tail: | |
1297 | pstate->list_offset -= pstate->top - floor - 2; | |
a51ea417 | 1298 | goto end; |
a51ea417 | 1299 | |
c62fbfe1 MD |
1300 | fancy_circref: |
1301 | pstate->list_offset -= pstate->top - floor - 2; | |
1302 | ||
1303 | circref: | |
b7f3516f | 1304 | scm_puts (" . ", port); |
c62fbfe1 MD |
1305 | print_circref (port, pstate, exp); |
1306 | goto end; | |
0f2d19dd JB |
1307 | } |
1308 | ||
1309 | \f | |
1310 | ||
bb35f315 MV |
1311 | int |
1312 | scm_valid_oport_value_p (SCM val) | |
1313 | { | |
368cf54d GB |
1314 | return (SCM_OPOUTPORTP (val) |
1315 | || (SCM_PORT_WITH_PS_P (val) | |
1316 | && SCM_OPOUTPORTP (SCM_PORT_WITH_PS_PORT (val)))); | |
bb35f315 MV |
1317 | } |
1318 | ||
8b840115 | 1319 | /* SCM_GPROC(s_write, "write", 1, 1, 0, scm_write, g_write); */ |
1cc91f1b | 1320 | |
0f2d19dd | 1321 | SCM |
1bbd0b84 | 1322 | scm_write (SCM obj, SCM port) |
0f2d19dd JB |
1323 | { |
1324 | if (SCM_UNBNDP (port)) | |
9de87eea | 1325 | port = scm_current_output_port (); |
3eb7e6ee JB |
1326 | |
1327 | SCM_ASSERT (scm_valid_oport_value_p (port), port, SCM_ARG2, s_write); | |
bb35f315 | 1328 | |
a51ea417 | 1329 | scm_prin1 (obj, port, 1); |
0f2d19dd JB |
1330 | return SCM_UNSPECIFIED; |
1331 | } | |
1332 | ||
1333 | ||
8b840115 | 1334 | /* SCM_GPROC(s_display, "display", 1, 1, 0, scm_display, g_display); */ |
1cc91f1b | 1335 | |
0f2d19dd | 1336 | SCM |
1bbd0b84 | 1337 | scm_display (SCM obj, SCM port) |
0f2d19dd JB |
1338 | { |
1339 | if (SCM_UNBNDP (port)) | |
9de87eea | 1340 | port = scm_current_output_port (); |
3eb7e6ee JB |
1341 | |
1342 | SCM_ASSERT (scm_valid_oport_value_p (port), port, SCM_ARG2, s_display); | |
bb35f315 | 1343 | |
a51ea417 | 1344 | scm_prin1 (obj, port, 0); |
0f2d19dd JB |
1345 | return SCM_UNSPECIFIED; |
1346 | } | |
1347 | ||
70d63753 GB |
1348 | |
1349 | SCM_DEFINE (scm_simple_format, "simple-format", 2, 0, 1, | |
1350 | (SCM destination, SCM message, SCM args), | |
eca65e90 MG |
1351 | "Write @var{message} to @var{destination}, defaulting to\n" |
1352 | "the current output port.\n" | |
1353 | "@var{message} can contain @code{~A} (was @code{%s}) and\n" | |
1354 | "@code{~S} (was @code{%S}) escapes. When printed,\n" | |
1355 | "the escapes are replaced with corresponding members of\n" | |
b7e64f8b | 1356 | "@var{args}:\n" |
eca65e90 MG |
1357 | "@code{~A} formats using @code{display} and @code{~S} formats\n" |
1358 | "using @code{write}.\n" | |
1359 | "If @var{destination} is @code{#t}, then use the current output\n" | |
1360 | "port, if @var{destination} is @code{#f}, then return a string\n" | |
1361 | "containing the formatted text. Does not add a trailing newline.") | |
70d63753 GB |
1362 | #define FUNC_NAME s_scm_simple_format |
1363 | { | |
dfd03fb9 | 1364 | SCM port, answer = SCM_UNSPECIFIED; |
70d63753 GB |
1365 | int fReturnString = 0; |
1366 | int writingp; | |
889975e5 | 1367 | size_t start, p, end; |
70d63753 | 1368 | |
bc36d050 | 1369 | if (scm_is_eq (destination, SCM_BOOL_T)) |
daba1a71 | 1370 | { |
9de87eea | 1371 | destination = port = scm_current_output_port (); |
daba1a71 | 1372 | } |
7888309b | 1373 | else if (scm_is_false (destination)) |
daba1a71 MD |
1374 | { |
1375 | fReturnString = 1; | |
0b2c2ba3 | 1376 | port = scm_mkstrport (SCM_INUM0, SCM_BOOL_F, |
dfd03fb9 MD |
1377 | SCM_OPN | SCM_WRTNG, |
1378 | FUNC_NAME); | |
1379 | destination = port; | |
daba1a71 MD |
1380 | } |
1381 | else | |
1382 | { | |
1383 | SCM_VALIDATE_OPORT_VALUE (1, destination); | |
dfd03fb9 | 1384 | port = SCM_COERCE_OUTPORT (destination); |
daba1a71 MD |
1385 | } |
1386 | SCM_VALIDATE_STRING (2, message); | |
af45e3b0 | 1387 | SCM_VALIDATE_REST_ARGUMENT (args); |
70d63753 | 1388 | |
889975e5 MG |
1389 | p = 0; |
1390 | start = 0; | |
1391 | end = scm_i_string_length (message); | |
b24b5e13 | 1392 | for (p = start; p != end; ++p) |
889975e5 | 1393 | if (scm_i_string_ref (message, p) == '~') |
70d63753 | 1394 | { |
b24b5e13 | 1395 | if (++p == end) |
6662998f MV |
1396 | break; |
1397 | ||
889975e5 | 1398 | switch (scm_i_string_ref (message, p)) |
6662998f MV |
1399 | { |
1400 | case 'A': case 'a': | |
1401 | writingp = 0; | |
1402 | break; | |
1403 | case 'S': case 's': | |
1404 | writingp = 1; | |
1405 | break; | |
1406 | case '~': | |
889975e5 | 1407 | scm_lfwrite_substr (message, start, p, port); |
6662998f MV |
1408 | start = p + 1; |
1409 | continue; | |
1410 | case '%': | |
889975e5 | 1411 | scm_lfwrite_substr (message, start, p - 1, port); |
dfd03fb9 | 1412 | scm_newline (port); |
6662998f MV |
1413 | start = p + 1; |
1414 | continue; | |
1415 | default: | |
1afff620 | 1416 | SCM_MISC_ERROR ("FORMAT: Unsupported format option ~~~A - use (ice-9 format) instead", |
889975e5 | 1417 | scm_list_1 (SCM_MAKE_CHAR (scm_i_string_ref (message, p)))); |
6662998f MV |
1418 | |
1419 | } | |
70d63753 | 1420 | |
6662998f | 1421 | |
d2e53ed6 | 1422 | if (!scm_is_pair (args)) |
1afff620 | 1423 | SCM_MISC_ERROR ("FORMAT: Missing argument for ~~~A", |
889975e5 | 1424 | scm_list_1 (SCM_MAKE_CHAR (scm_i_string_ref (message, p)))); |
6662998f | 1425 | |
889975e5 | 1426 | scm_lfwrite_substr (message, start, p - 1, port); |
dfd03fb9 | 1427 | /* we pass destination here */ |
70d63753 GB |
1428 | scm_prin1 (SCM_CAR (args), destination, writingp); |
1429 | args = SCM_CDR (args); | |
1430 | start = p + 1; | |
1431 | } | |
6662998f | 1432 | |
889975e5 | 1433 | scm_lfwrite_substr (message, start, p, port); |
bc36d050 | 1434 | if (!scm_is_eq (args, SCM_EOL)) |
1afff620 KN |
1435 | SCM_MISC_ERROR ("FORMAT: ~A superfluous arguments", |
1436 | scm_list_1 (scm_length (args))); | |
70d63753 GB |
1437 | |
1438 | if (fReturnString) | |
1439 | answer = scm_strport_to_string (destination); | |
1440 | ||
daba1a71 | 1441 | return scm_return_first (answer, message); |
70d63753 GB |
1442 | } |
1443 | #undef FUNC_NAME | |
1444 | ||
1445 | ||
3b3b36dd | 1446 | SCM_DEFINE (scm_newline, "newline", 0, 1, 0, |
b450f070 | 1447 | (SCM port), |
8f85c0c6 NJ |
1448 | "Send a newline to @var{port}.\n" |
1449 | "If @var{port} is omitted, send to the current output port.") | |
1bbd0b84 | 1450 | #define FUNC_NAME s_scm_newline |
0f2d19dd JB |
1451 | { |
1452 | if (SCM_UNBNDP (port)) | |
9de87eea | 1453 | port = scm_current_output_port (); |
3eb7e6ee | 1454 | |
34d19ef6 | 1455 | SCM_VALIDATE_OPORT_VALUE (1, port); |
bb35f315 | 1456 | |
0ef4ae82 | 1457 | scm_putc ('\n', SCM_COERCE_OUTPORT (port)); |
0f2d19dd JB |
1458 | return SCM_UNSPECIFIED; |
1459 | } | |
1bbd0b84 | 1460 | #undef FUNC_NAME |
0f2d19dd | 1461 | |
3b3b36dd | 1462 | SCM_DEFINE (scm_write_char, "write-char", 1, 1, 0, |
b450f070 | 1463 | (SCM chr, SCM port), |
eca65e90 | 1464 | "Send character @var{chr} to @var{port}.") |
1bbd0b84 | 1465 | #define FUNC_NAME s_scm_write_char |
0f2d19dd JB |
1466 | { |
1467 | if (SCM_UNBNDP (port)) | |
9de87eea | 1468 | port = scm_current_output_port (); |
3eb7e6ee | 1469 | |
34d19ef6 HWN |
1470 | SCM_VALIDATE_CHAR (1, chr); |
1471 | SCM_VALIDATE_OPORT_VALUE (2, port); | |
07f49ac7 LC |
1472 | |
1473 | port = SCM_COERCE_OUTPORT (port); | |
1474 | if (!display_character (SCM_CHAR (chr), port, | |
478848cb | 1475 | PORT_CONVERSION_HANDLER (port))) |
07f49ac7 LC |
1476 | scm_encoding_error (__func__, errno, |
1477 | "cannot convert to output locale", | |
6851d3be | 1478 | port, chr); |
07f49ac7 | 1479 | |
0f2d19dd JB |
1480 | return SCM_UNSPECIFIED; |
1481 | } | |
1bbd0b84 | 1482 | #undef FUNC_NAME |
0f2d19dd | 1483 | |
0f2d19dd JB |
1484 | \f |
1485 | ||
bb35f315 | 1486 | /* Call back to Scheme code to do the printing of special objects |
c19bc088 MD |
1487 | * (like structs). SCM_PRINTER_APPLY applies PROC to EXP and a smob |
1488 | * containing PORT and PSTATE. This object can be used as the port for | |
1489 | * display/write etc to continue the current print chain. The REVEALED | |
1490 | * field of PSTATE is set to true to indicate that the print state has | |
1491 | * escaped to Scheme and thus has to be freed by the GC. | |
1492 | */ | |
1493 | ||
92c2555f | 1494 | scm_t_bits scm_tc16_port_with_ps; |
c19bc088 MD |
1495 | |
1496 | /* Print exactly as the port itself would */ | |
1497 | ||
1498 | static int | |
e841c3e0 | 1499 | port_with_ps_print (SCM obj, SCM port, scm_print_state *pstate) |
c19bc088 MD |
1500 | { |
1501 | obj = SCM_PORT_WITH_PS_PORT (obj); | |
1502 | return scm_ptobs[SCM_PTOBNUM (obj)].print (obj, port, pstate); | |
1503 | } | |
c4f37e80 MV |
1504 | |
1505 | SCM | |
1bbd0b84 | 1506 | scm_printer_apply (SCM proc, SCM exp, SCM port, scm_print_state *pstate) |
c4f37e80 | 1507 | { |
bb35f315 | 1508 | pstate->revealed = 1; |
dfd03fb9 MD |
1509 | return scm_call_2 (proc, exp, |
1510 | scm_i_port_with_print_state (port, pstate->handle)); | |
c19bc088 MD |
1511 | } |
1512 | ||
dfd03fb9 | 1513 | SCM_DEFINE (scm_port_with_print_state, "port-with-print-state", 1, 1, 0, |
1bbd0b84 | 1514 | (SCM port, SCM pstate), |
71331188 | 1515 | "Create a new port which behaves like @var{port}, but with an\n" |
dfd03fb9 MD |
1516 | "included print state @var{pstate}. @var{pstate} is optional.\n" |
1517 | "If @var{pstate} isn't supplied and @var{port} already has\n" | |
1518 | "a print state, the old print state is reused.") | |
1bbd0b84 | 1519 | #define FUNC_NAME s_scm_port_with_print_state |
c19bc088 | 1520 | { |
34d19ef6 | 1521 | SCM_VALIDATE_OPORT_VALUE (1, port); |
dfd03fb9 MD |
1522 | if (!SCM_UNBNDP (pstate)) |
1523 | SCM_VALIDATE_PRINTSTATE (2, pstate); | |
1524 | return scm_i_port_with_print_state (port, pstate); | |
c19bc088 | 1525 | } |
1bbd0b84 | 1526 | #undef FUNC_NAME |
c19bc088 | 1527 | |
a1ec6916 | 1528 | SCM_DEFINE (scm_get_print_state, "get-print-state", 1, 0, 0, |
1bbd0b84 | 1529 | (SCM port), |
71331188 MG |
1530 | "Return the print state of the port @var{port}. If @var{port}\n" |
1531 | "has no associated print state, @code{#f} is returned.") | |
1bbd0b84 | 1532 | #define FUNC_NAME s_scm_get_print_state |
c19bc088 | 1533 | { |
368cf54d GB |
1534 | if (SCM_PORT_WITH_PS_P (port)) |
1535 | return SCM_PORT_WITH_PS_PS (port); | |
f5f2dcff | 1536 | if (SCM_OUTPUT_PORT_P (port)) |
368cf54d | 1537 | return SCM_BOOL_F; |
276dd677 | 1538 | SCM_WRONG_TYPE_ARG (1, port); |
c4f37e80 | 1539 | } |
1bbd0b84 | 1540 | #undef FUNC_NAME |
bb35f315 | 1541 | |
c4f37e80 | 1542 | \f |
1cc91f1b | 1543 | |
0f2d19dd JB |
1544 | void |
1545 | scm_init_print () | |
0f2d19dd | 1546 | { |
66b1dbf6 | 1547 | SCM type; |
d5cf5324 | 1548 | |
d5cf5324 DH |
1549 | scm_gc_register_root (&print_state_pool); |
1550 | scm_gc_register_root (&scm_print_state_vtable); | |
66b1dbf6 AW |
1551 | type = scm_make_vtable (scm_from_locale_string (SCM_PRINT_STATE_LAYOUT), |
1552 | SCM_BOOL_F); | |
4a655e50 | 1553 | scm_set_struct_vtable_name_x (type, scm_from_latin1_symbol ("print-state")); |
bb35f315 | 1554 | scm_print_state_vtable = type; |
c4f37e80 | 1555 | |
c19bc088 MD |
1556 | /* Don't want to bind a wrapper class in GOOPS, so pass 0 as arg1. */ |
1557 | scm_tc16_port_with_ps = scm_make_smob_type (0, 0); | |
e841c3e0 | 1558 | scm_set_smob_print (scm_tc16_port_with_ps, port_with_ps_print); |
81ae25da | 1559 | |
a0599745 | 1560 | #include "libguile/print.x" |
475fa9a5 | 1561 | |
8500b186 AW |
1562 | scm_init_opts (scm_print_options, scm_print_opts); |
1563 | scm_print_opts[SCM_PRINT_HIGHLIGHT_PREFIX_I].val = | |
1564 | SCM_UNPACK (scm_from_locale_string ("{")); | |
1565 | scm_print_opts[SCM_PRINT_HIGHLIGHT_SUFFIX_I].val = | |
1566 | SCM_UNPACK (scm_from_locale_string ("}")); | |
475fa9a5 | 1567 | scm_print_opts[SCM_PRINT_KEYWORD_STYLE_I].val = SCM_UNPACK (sym_reader); |
0f2d19dd | 1568 | } |
89e00824 ML |
1569 | |
1570 | /* | |
1571 | Local Variables: | |
1572 | c-file-style: "gnu" | |
1573 | End: | |
1574 | */ |