Commit | Line | Data |
---|---|---|
f4bc4e59 | 1 | /* Copyright (C) 1995-1999, 2000, 2001, 2002, 2003, 2004, 2006, 2008, |
e4598559 | 2 | * 2009, 2010, 2011, 2012, 2013 Free Software Foundation, Inc. |
f4bc4e59 | 3 | * |
73be1d9e | 4 | * This library is free software; you can redistribute it and/or |
53befeb7 NJ |
5 | * modify it under the terms of the GNU Lesser General Public License |
6 | * as published by the Free Software Foundation; either version 3 of | |
7 | * the License, or (at your option) any later version. | |
0f2d19dd | 8 | * |
53befeb7 NJ |
9 | * This library is distributed in the hope that it will be useful, but |
10 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
73be1d9e MV |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
12 | * Lesser General Public License for more details. | |
0f2d19dd | 13 | * |
73be1d9e MV |
14 | * You should have received a copy of the GNU Lesser General Public |
15 | * License along with this library; if not, write to the Free Software | |
53befeb7 NJ |
16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
17 | * 02110-1301 USA | |
73be1d9e | 18 | */ |
1bbd0b84 | 19 | |
1bbd0b84 | 20 | |
0f2d19dd | 21 | \f |
dbb605f5 LC |
22 | #ifdef HAVE_CONFIG_H |
23 | # include <config.h> | |
24 | #endif | |
0f2d19dd | 25 | |
e6e2e95a | 26 | #include <errno.h> |
f4bc4e59 LC |
27 | #include <iconv.h> |
28 | #include <stdio.h> | |
29 | #include <assert.h> | |
30 | ||
eca29b02 | 31 | #include <uniconv.h> |
904a78f1 | 32 | #include <unictype.h> |
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" | |
2fb924f6 | 43 | #include "libguile/programs.h" |
a0599745 MD |
44 | #include "libguile/alist.h" |
45 | #include "libguile/struct.h" | |
a0599745 | 46 | #include "libguile/ports.h" |
e4598559 | 47 | #include "libguile/ports-internal.h" |
a0599745 MD |
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 | { \ | |
0607ebbf | 164 | scm_putc_unlocked ('#', port); \ |
dbb5de29 NJ |
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; |
0607ebbf | 308 | scm_putc_unlocked ('#', port); |
c62fbfe1 | 309 | scm_intprint (i - self, 10, port); |
0607ebbf | 310 | scm_putc_unlocked ('#', 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 | ||
4164dd6d | 339 | /* FIXME: Cache this information on the symbol, somehow. */ |
15671c6e AW |
340 | static int |
341 | symbol_has_extended_read_syntax (SCM sym) | |
6662998f | 342 | { |
15671c6e AW |
343 | size_t pos, len = scm_i_symbol_length (sym); |
344 | scm_t_wchar c; | |
345 | ||
346 | /* The empty symbol. */ | |
347 | if (len == 0) | |
348 | return 1; | |
349 | ||
350 | c = scm_i_symbol_ref (sym, 0); | |
351 | ||
4164dd6d AW |
352 | switch (c) |
353 | { | |
354 | case '\'': | |
355 | case '`': | |
356 | case ',': | |
357 | case '"': | |
358 | case ';': | |
359 | case '#': | |
360 | /* Some initial-character constraints. */ | |
361 | return 1; | |
15671c6e | 362 | |
4164dd6d AW |
363 | case ':': |
364 | /* Symbols that look like keywords. */ | |
365 | return quote_keywordish_symbols (); | |
15671c6e | 366 | |
4164dd6d AW |
367 | case '.': |
368 | /* Single dot conflicts with dotted-pair notation. */ | |
369 | if (len == 1) | |
370 | return 1; | |
371 | /* Fall through to check numbers. */ | |
372 | case '+': | |
373 | case '-': | |
374 | case '0': | |
375 | case '1': | |
376 | case '2': | |
377 | case '3': | |
378 | case '4': | |
379 | case '5': | |
380 | case '6': | |
381 | case '7': | |
382 | case '8': | |
383 | case '9': | |
384 | /* Number-ish symbols. Numbers with radixes already caught be # | |
385 | above. */ | |
386 | if (scm_is_true (scm_i_string_to_number (scm_symbol_to_string (sym), 10))) | |
387 | return 1; | |
388 | break; | |
389 | ||
390 | default: | |
391 | break; | |
392 | } | |
15671c6e | 393 | |
2e9fc9fc AW |
394 | /* Other disallowed first characters. */ |
395 | if (!uc_is_general_category_withtable (c, INITIAL_IDENTIFIER_MASK)) | |
396 | return 1; | |
397 | ||
4164dd6d AW |
398 | /* Keywords can be identified by trailing colons too. */ |
399 | if (scm_i_symbol_ref (sym, len - 1) == ':') | |
400 | return quote_keywordish_symbols (); | |
401 | ||
2e9fc9fc AW |
402 | /* Otherwise, any character that's in the identifier category mask is |
403 | fine to pass through as-is, provided it's not one of the ASCII | |
404 | delimiters like `;'. */ | |
405 | for (pos = 1; pos < len; pos++) | |
6662998f | 406 | { |
2e9fc9fc AW |
407 | c = scm_i_symbol_ref (sym, pos); |
408 | if (!uc_is_general_category_withtable (c, SUBSEQUENT_IDENTIFIER_MASK)) | |
409 | return 1; | |
410 | else if (c == '"' || c == ';' || c == '#') | |
411 | return 1; | |
6662998f | 412 | } |
c6b49e89 | 413 | |
15671c6e AW |
414 | return 0; |
415 | } | |
416 | ||
417 | static void | |
418 | print_normal_symbol (SCM sym, SCM port) | |
419 | { | |
4164dd6d AW |
420 | size_t len; |
421 | scm_t_string_failed_conversion_handler strategy; | |
422 | ||
423 | len = scm_i_symbol_length (sym); | |
0dd7c540 | 424 | strategy = SCM_PTAB_ENTRY (port)->ilseq_handler; |
4164dd6d AW |
425 | |
426 | if (scm_i_is_narrow_symbol (sym)) | |
427 | display_string (scm_i_symbol_chars (sym), 1, len, port, strategy); | |
428 | else | |
429 | display_string (scm_i_symbol_wide_chars (sym), 0, len, port, strategy); | |
15671c6e AW |
430 | } |
431 | ||
15671c6e AW |
432 | static void |
433 | print_extended_symbol (SCM sym, SCM port) | |
434 | { | |
435 | size_t pos, len; | |
436 | scm_t_string_failed_conversion_handler strategy; | |
437 | ||
438 | len = scm_i_symbol_length (sym); | |
478848cb | 439 | strategy = PORT_CONVERSION_HANDLER (port); |
15671c6e | 440 | |
f209aeee | 441 | scm_lfwrite_unlocked ("#{", 2, port); |
15671c6e AW |
442 | |
443 | for (pos = 0; pos < len; pos++) | |
444 | { | |
445 | scm_t_wchar c = scm_i_symbol_ref (sym, pos); | |
446 | ||
2e9fc9fc AW |
447 | if (uc_is_general_category_withtable (c, |
448 | SUBSEQUENT_IDENTIFIER_MASK | |
449 | | UC_CATEGORY_MASK_Zs)) | |
15671c6e | 450 | { |
b4a09988 DK |
451 | if (!display_character (c, port, strategy) |
452 | || (c == '\\' && !display_character (c, port, strategy))) | |
15671c6e AW |
453 | scm_encoding_error ("print_extended_symbol", errno, |
454 | "cannot convert to output locale", | |
455 | port, SCM_MAKE_CHAR (c)); | |
2e9fc9fc AW |
456 | } |
457 | else | |
458 | { | |
459 | display_string ("\\x", 1, 2, port, iconveh_question_mark); | |
460 | scm_intprint (c, 16, port); | |
461 | display_character (';', port, iconveh_question_mark); | |
15671c6e AW |
462 | } |
463 | } | |
464 | ||
f209aeee | 465 | scm_lfwrite_unlocked ("}#", 2, port); |
15671c6e AW |
466 | } |
467 | ||
468 | /* FIXME: allow R6RS hex escapes instead of #{...}#. */ | |
4164dd6d AW |
469 | static void |
470 | print_symbol (SCM sym, SCM port) | |
15671c6e AW |
471 | { |
472 | if (symbol_has_extended_read_syntax (sym)) | |
473 | print_extended_symbol (sym, port); | |
474 | else | |
475 | print_normal_symbol (sym, port); | |
6662998f MV |
476 | } |
477 | ||
e23106d5 MG |
478 | void |
479 | scm_print_symbol_name (const char *str, size_t len, SCM port) | |
480 | { | |
25d50a05 | 481 | SCM symbol = scm_from_utf8_symboln (str, len); |
4164dd6d | 482 | print_symbol (symbol, port); |
e23106d5 MG |
483 | } |
484 | ||
c62fbfe1 | 485 | /* Print generally. Handles both write and display according to PSTATE. |
0f2d19dd | 486 | */ |
8b840115 MD |
487 | SCM_GPROC(s_write, "write", 1, 1, 0, scm_write, g_write); |
488 | SCM_GPROC(s_display, "display", 1, 1, 0, scm_display, g_display); | |
1cc91f1b | 489 | |
d232520a MV |
490 | static void iprin1 (SCM exp, SCM port, scm_print_state *pstate); |
491 | ||
dea901d6 MG |
492 | |
493 | /* Print a character as an octal or hex escape. */ | |
494 | #define PRINT_CHAR_ESCAPE(i, port) \ | |
495 | do \ | |
496 | { \ | |
497 | if (!SCM_R6RS_ESCAPES_P) \ | |
498 | scm_intprint (i, 8, port); \ | |
499 | else \ | |
500 | { \ | |
0607ebbf | 501 | scm_puts_unlocked ("x", port); \ |
dea901d6 MG |
502 | scm_intprint (i, 16, port); \ |
503 | } \ | |
504 | } \ | |
505 | while (0) | |
506 | ||
507 | ||
0f2d19dd | 508 | void |
1bbd0b84 | 509 | scm_iprin1 (SCM exp, SCM port, scm_print_state *pstate) |
d232520a MV |
510 | { |
511 | if (pstate->fancyp | |
512 | && scm_is_true (scm_memq (exp, pstate->highlight_objects))) | |
513 | { | |
81ae25da | 514 | scm_display (SCM_PRINT_HIGHLIGHT_PREFIX, port); |
d232520a | 515 | iprin1 (exp, port, pstate); |
81ae25da | 516 | scm_display (SCM_PRINT_HIGHLIGHT_SUFFIX, port); |
d232520a MV |
517 | } |
518 | else | |
519 | iprin1 (exp, port, pstate); | |
520 | } | |
521 | ||
522 | static void | |
523 | iprin1 (SCM exp, SCM port, scm_print_state *pstate) | |
0f2d19dd | 524 | { |
54778cd3 | 525 | switch (SCM_ITAG3 (exp)) |
0f2d19dd | 526 | { |
e34f941a DH |
527 | case scm_tc3_tc7_1: |
528 | case scm_tc3_tc7_2: | |
529 | /* These tc3 tags should never occur in an immediate value. They are | |
530 | * only used in cell types of non-immediates, i. e. the value returned | |
531 | * by SCM_CELL_TYPE (exp) can use these tags. | |
532 | */ | |
533 | scm_ipruk ("immediate", exp, port); | |
534 | break; | |
535 | case scm_tc3_int_1: | |
536 | case scm_tc3_int_2: | |
e11e83f3 | 537 | scm_intprint (SCM_I_INUM (exp), 10, port); |
0f2d19dd | 538 | break; |
e34f941a | 539 | case scm_tc3_imm24: |
7866a09b | 540 | if (SCM_CHARP (exp)) |
0f2d19dd | 541 | { |
b7f3516f | 542 | if (SCM_WRITINGP (pstate)) |
07f49ac7 LC |
543 | write_character (SCM_CHAR (exp), port, 0); |
544 | else | |
b7f3516f | 545 | { |
07f49ac7 | 546 | if (!display_character (SCM_CHAR (exp), port, |
478848cb | 547 | PORT_CONVERSION_HANDLER (port))) |
07f49ac7 LC |
548 | scm_encoding_error (__func__, errno, |
549 | "cannot convert to output locale", | |
6851d3be | 550 | port, exp); |
b7f3516f | 551 | } |
0f2d19dd | 552 | } |
a51ea417 | 553 | else if (SCM_IFLAGP (exp) |
e17d318f DH |
554 | && ((size_t) SCM_IFLAGNUM (exp) < (sizeof iflagnames / sizeof (char *)))) |
555 | { | |
0607ebbf | 556 | scm_puts_unlocked (iflagnames [SCM_IFLAGNUM (exp)], port); |
e17d318f | 557 | } |
0f2d19dd | 558 | else |
e34f941a DH |
559 | { |
560 | /* unknown immediate value */ | |
561 | scm_ipruk ("immediate", exp, port); | |
562 | } | |
0f2d19dd | 563 | break; |
e34f941a | 564 | case scm_tc3_cons: |
0f2d19dd JB |
565 | switch (SCM_TYP7 (exp)) |
566 | { | |
904a077d MV |
567 | case scm_tcs_struct: |
568 | { | |
569 | ENTER_NESTED_DATA (pstate, exp, circref); | |
570 | if (SCM_OBJ_CLASS_FLAGS (exp) & SCM_CLASSF_GOOPS) | |
571 | { | |
572 | SCM pwps, print = pstate->writingp ? g_write : g_display; | |
b2b33168 | 573 | if (SCM_UNPACK (print) == 0) |
904a077d | 574 | goto print_struct; |
dfd03fb9 | 575 | pwps = scm_i_port_with_print_state (port, pstate->handle); |
7663c008 | 576 | pstate->revealed = 1; |
fa075d40 | 577 | scm_call_2 (print, exp, pwps); |
904a077d MV |
578 | } |
579 | else | |
580 | { | |
581 | print_struct: | |
582 | scm_print_struct (exp, port, pstate); | |
583 | } | |
584 | EXIT_NESTED_DATA (pstate); | |
585 | } | |
586 | break; | |
0f2d19dd JB |
587 | case scm_tcs_cons_imcar: |
588 | case scm_tcs_cons_nimcar: | |
c62fbfe1 MD |
589 | ENTER_NESTED_DATA (pstate, exp, circref); |
590 | scm_iprlist ("(", exp, ')', port, pstate); | |
591 | EXIT_NESTED_DATA (pstate); | |
a51ea417 MD |
592 | break; |
593 | circref: | |
c62fbfe1 | 594 | print_circref (port, pstate, exp); |
0f2d19dd | 595 | break; |
534c55a9 DH |
596 | case scm_tc7_number: |
597 | switch SCM_TYP16 (exp) { | |
598 | case scm_tc16_big: | |
599 | scm_bigprint (exp, port, pstate); | |
600 | break; | |
601 | case scm_tc16_real: | |
602 | scm_print_real (exp, port, pstate); | |
603 | break; | |
604 | case scm_tc16_complex: | |
605 | scm_print_complex (exp, port, pstate); | |
606 | break; | |
f92e85f7 MV |
607 | case scm_tc16_fraction: |
608 | scm_i_print_fraction (exp, port, pstate); | |
609 | break; | |
534c55a9 DH |
610 | } |
611 | break; | |
9c44cd45 MG |
612 | case scm_tc7_string: |
613 | if (SCM_WRITINGP (pstate)) | |
614 | { | |
07f49ac7 | 615 | size_t len, i; |
9c44cd45 | 616 | |
f4bc4e59 | 617 | display_character ('"', port, iconveh_question_mark); |
9c44cd45 MG |
618 | len = scm_i_string_length (exp); |
619 | for (i = 0; i < len; ++i) | |
07f49ac7 LC |
620 | write_character (scm_i_string_ref (exp, i), port, 1); |
621 | ||
f4bc4e59 | 622 | display_character ('"', port, iconveh_question_mark); |
9c44cd45 MG |
623 | scm_remember_upto_here_1 (exp); |
624 | } | |
625 | else | |
f4bc4e59 LC |
626 | { |
627 | size_t len, printed; | |
628 | ||
629 | len = scm_i_string_length (exp); | |
630 | printed = display_string (scm_i_string_data (exp), | |
631 | scm_i_is_narrow_string (exp), | |
632 | len, port, | |
478848cb | 633 | PORT_CONVERSION_HANDLER (port)); |
f4bc4e59 | 634 | if (SCM_UNLIKELY (printed < len)) |
f4bc4e59 LC |
635 | scm_encoding_error (__func__, errno, |
636 | "cannot convert to output locale", | |
6851d3be | 637 | port, scm_c_string_ref (exp, printed)); |
f4bc4e59 LC |
638 | } |
639 | ||
9c44cd45 MG |
640 | scm_remember_upto_here_1 (exp); |
641 | break; | |
28b06554 | 642 | case scm_tc7_symbol: |
cc95e00a | 643 | if (scm_i_symbol_is_interned (exp)) |
9ff28a13 | 644 | { |
4164dd6d | 645 | print_symbol (exp, port); |
9ff28a13 MV |
646 | scm_remember_upto_here_1 (exp); |
647 | } | |
648 | else | |
649 | { | |
0607ebbf | 650 | scm_puts_unlocked ("#<uninterned-symbol ", port); |
4164dd6d | 651 | print_symbol (exp, port); |
0607ebbf | 652 | scm_putc_unlocked (' ', port); |
0345e278 | 653 | scm_uintprint (SCM_UNPACK (exp), 16, port); |
0607ebbf | 654 | scm_putc_unlocked ('>', port); |
9ff28a13 | 655 | } |
6662998f | 656 | break; |
e5aca4b5 MV |
657 | case scm_tc7_variable: |
658 | scm_i_variable_print (exp, port, pstate); | |
659 | break; | |
510ca126 | 660 | case scm_tc7_rtl_program: |
2fb924f6 AW |
661 | case scm_tc7_program: |
662 | scm_i_program_print (exp, port, pstate); | |
663 | break; | |
5b46a8c2 LC |
664 | case scm_tc7_pointer: |
665 | scm_i_pointer_print (exp, port, pstate); | |
e2c2a699 | 666 | break; |
c99de5aa AW |
667 | case scm_tc7_hashtable: |
668 | scm_i_hashtable_print (exp, port, pstate); | |
669 | break; | |
26b26354 AW |
670 | case scm_tc7_weak_set: |
671 | scm_i_weak_set_print (exp, port, pstate); | |
672 | break; | |
7005c60f AW |
673 | case scm_tc7_weak_table: |
674 | scm_i_weak_table_print (exp, port, pstate); | |
675 | break; | |
9ea31741 AW |
676 | case scm_tc7_fluid: |
677 | scm_i_fluid_print (exp, port, pstate); | |
678 | break; | |
45cf2428 AW |
679 | case scm_tc7_dynamic_state: |
680 | scm_i_dynamic_state_print (exp, port, pstate); | |
681 | break; | |
6f3b0cc2 AW |
682 | case scm_tc7_frame: |
683 | scm_i_frame_print (exp, port, pstate); | |
684 | break; | |
685 | case scm_tc7_objcode: | |
686 | scm_i_objcode_print (exp, port, pstate); | |
687 | break; | |
688 | case scm_tc7_vm: | |
689 | scm_i_vm_print (exp, port, pstate); | |
690 | break; | |
691 | case scm_tc7_vm_cont: | |
692 | scm_i_vm_cont_print (exp, port, pstate); | |
693 | break; | |
b2637c98 | 694 | case scm_tc7_array: |
c62fbfe1 | 695 | ENTER_NESTED_DATA (pstate, exp, circref); |
b2637c98 | 696 | scm_i_print_array (exp, port, pstate); |
88c0a1d5 | 697 | EXIT_NESTED_DATA (pstate); |
b2637c98 | 698 | break; |
807e5a66 LC |
699 | case scm_tc7_bytevector: |
700 | scm_i_print_bytevector (exp, port, pstate); | |
701 | break; | |
ff1feca9 AW |
702 | case scm_tc7_bitvector: |
703 | scm_i_print_bitvector (exp, port, pstate); | |
704 | break; | |
0f2d19dd | 705 | case scm_tc7_wvect: |
c62fbfe1 | 706 | ENTER_NESTED_DATA (pstate, exp, circref); |
91ee7515 | 707 | scm_puts_unlocked ("#w(", port); |
0f2d19dd | 708 | goto common_vector_printer; |
0f2d19dd | 709 | case scm_tc7_vector: |
c62fbfe1 | 710 | ENTER_NESTED_DATA (pstate, exp, circref); |
0607ebbf | 711 | scm_puts_unlocked ("#(", port); |
0f2d19dd | 712 | common_vector_printer: |
9fbaf27c | 713 | { |
c014a02e | 714 | register long i; |
4057a3e0 | 715 | long last = SCM_SIMPLE_VECTOR_LENGTH (exp) - 1; |
9fbaf27c | 716 | int cutp = 0; |
4057a3e0 MV |
717 | if (pstate->fancyp |
718 | && SCM_SIMPLE_VECTOR_LENGTH (exp) > pstate->length) | |
9fbaf27c MD |
719 | { |
720 | last = pstate->length - 1; | |
721 | cutp = 1; | |
722 | } | |
a141db86 AW |
723 | for (i = 0; i < last; ++i) |
724 | { | |
725 | scm_iprin1 (scm_c_vector_ref (exp, i), port, pstate); | |
0607ebbf | 726 | scm_putc_unlocked (' ', port); |
a141db86 | 727 | } |
9fbaf27c MD |
728 | if (i == last) |
729 | { | |
730 | /* CHECK_INTS; */ | |
c367c4b4 | 731 | scm_iprin1 (scm_c_vector_ref (exp, i), port, pstate); |
9fbaf27c MD |
732 | } |
733 | if (cutp) | |
0607ebbf AW |
734 | scm_puts_unlocked (" ...", port); |
735 | scm_putc_unlocked (')', port); | |
9fbaf27c | 736 | } |
c62fbfe1 | 737 | EXIT_NESTED_DATA (pstate); |
0f2d19dd | 738 | break; |
0f2d19dd | 739 | case scm_tc7_port: |
5ca6dc39 | 740 | { |
62bd5d66 AW |
741 | scm_t_ptob_descriptor *ptob = SCM_PORT_DESCRIPTOR (exp); |
742 | if (ptob->print && ptob->print (exp, port, pstate)) | |
a51ea417 | 743 | break; |
5ca6dc39 JB |
744 | goto punk; |
745 | } | |
746 | case scm_tc7_smob: | |
7a7f7c53 DH |
747 | ENTER_NESTED_DATA (pstate, exp, circref); |
748 | SCM_SMOB_DESCRIPTOR (exp).print (exp, port, pstate); | |
749 | EXIT_NESTED_DATA (pstate); | |
750 | break; | |
0f2d19dd | 751 | default: |
314b8716 | 752 | /* case scm_tcs_closures: */ |
a51ea417 MD |
753 | punk: |
754 | scm_ipruk ("type", exp, port); | |
0f2d19dd JB |
755 | } |
756 | } | |
757 | } | |
758 | ||
c62fbfe1 MD |
759 | /* Print states are necessary for circular reference safe printing. |
760 | * They are also expensive to allocate. Therefore print states are | |
761 | * kept in a pool so that they can be reused. | |
762 | */ | |
1cc91f1b | 763 | |
bb35f315 MV |
764 | /* The PORT argument can also be a print-state/port pair, which will |
765 | * then be used instead of allocating a new print state. This is | |
766 | * useful for continuing a chain of print calls from Scheme. */ | |
767 | ||
a51ea417 | 768 | void |
1bbd0b84 | 769 | scm_prin1 (SCM exp, SCM port, int writingp) |
a51ea417 | 770 | { |
c4f37e80 MV |
771 | SCM handle = SCM_BOOL_F; /* Will GC protect the handle whilst unlinked */ |
772 | SCM pstate_scm; | |
c62fbfe1 | 773 | scm_print_state *pstate; |
15635be5 | 774 | int old_writingp; |
c62fbfe1 | 775 | |
bb35f315 MV |
776 | /* If PORT is a print-state/port pair, use that. Else create a new |
777 | print-state. */ | |
c4f37e80 | 778 | |
0c95b57d | 779 | if (SCM_PORT_WITH_PS_P (port)) |
bb35f315 | 780 | { |
52235e71 MD |
781 | pstate_scm = SCM_PORT_WITH_PS_PS (port); |
782 | port = SCM_PORT_WITH_PS_PORT (port); | |
bb35f315 MV |
783 | } |
784 | else | |
c62fbfe1 | 785 | { |
c4f37e80 | 786 | /* First try to allocate a print state from the pool */ |
9de87eea | 787 | scm_i_pthread_mutex_lock (&print_state_mutex); |
d2e53ed6 | 788 | if (!scm_is_null (print_state_pool)) |
c4f37e80 | 789 | { |
d5cf5324 DH |
790 | handle = print_state_pool; |
791 | print_state_pool = SCM_CDR (print_state_pool); | |
c4f37e80 | 792 | } |
9de87eea | 793 | scm_i_pthread_mutex_unlock (&print_state_mutex); |
7888309b | 794 | if (scm_is_false (handle)) |
d5cf5324 | 795 | handle = scm_list_1 (make_print_state ()); |
c4f37e80 | 796 | pstate_scm = SCM_CAR (handle); |
c62fbfe1 | 797 | } |
c62fbfe1 | 798 | |
c4f37e80 | 799 | pstate = SCM_PRINT_STATE (pstate_scm); |
15635be5 | 800 | old_writingp = pstate->writingp; |
c62fbfe1 MD |
801 | pstate->writingp = writingp; |
802 | scm_iprin1 (exp, port, pstate); | |
15635be5 | 803 | pstate->writingp = old_writingp; |
c62fbfe1 | 804 | |
bb35f315 MV |
805 | /* Return print state to pool if it has been created above and |
806 | hasn't escaped to Scheme. */ | |
807 | ||
7888309b | 808 | if (scm_is_true (handle) && !pstate->revealed) |
c4f37e80 | 809 | { |
9de87eea | 810 | scm_i_pthread_mutex_lock (&print_state_mutex); |
d5cf5324 DH |
811 | SCM_SETCDR (handle, print_state_pool); |
812 | print_state_pool = handle; | |
9de87eea | 813 | scm_i_pthread_mutex_unlock (&print_state_mutex); |
c4f37e80 | 814 | } |
a51ea417 MD |
815 | } |
816 | ||
f4bc4e59 LC |
817 | /* Convert codepoint CH to UTF-8 and store the result in UTF8. Return |
818 | the number of bytes of the UTF-8-encoded string. */ | |
819 | static size_t | |
820 | codepoint_to_utf8 (scm_t_wchar ch, scm_t_uint8 utf8[4]) | |
9c44cd45 | 821 | { |
f4bc4e59 LC |
822 | size_t len; |
823 | scm_t_uint32 codepoint; | |
824 | ||
825 | codepoint = (scm_t_uint32) ch; | |
07f49ac7 | 826 | |
f4bc4e59 | 827 | if (codepoint <= 0x7f) |
07f49ac7 | 828 | { |
f4bc4e59 LC |
829 | len = 1; |
830 | utf8[0] = (scm_t_uint8) codepoint; | |
831 | } | |
832 | else if (codepoint <= 0x7ffUL) | |
833 | { | |
834 | len = 2; | |
835 | utf8[0] = 0xc0 | (codepoint >> 6); | |
836 | utf8[1] = 0x80 | (codepoint & 0x3f); | |
837 | } | |
838 | else if (codepoint <= 0xffffUL) | |
839 | { | |
840 | len = 3; | |
841 | utf8[0] = 0xe0 | (codepoint >> 12); | |
842 | utf8[1] = 0x80 | ((codepoint >> 6) & 0x3f); | |
843 | utf8[2] = 0x80 | (codepoint & 0x3f); | |
07f49ac7 LC |
844 | } |
845 | else | |
846 | { | |
f4bc4e59 LC |
847 | len = 4; |
848 | utf8[0] = 0xf0 | (codepoint >> 18); | |
849 | utf8[1] = 0x80 | ((codepoint >> 12) & 0x3f); | |
850 | utf8[2] = 0x80 | ((codepoint >> 6) & 0x3f); | |
851 | utf8[3] = 0x80 | (codepoint & 0x3f); | |
852 | } | |
853 | ||
854 | return len; | |
855 | } | |
856 | ||
f4bc4e59 LC |
857 | #define STR_REF(s, x) \ |
858 | (narrow_p \ | |
859 | ? (scm_t_wchar) ((unsigned char *) (s))[x] \ | |
860 | : ((scm_t_wchar *) (s))[x]) | |
861 | ||
7b292a9d LC |
862 | /* Write STR to PORT as UTF-8. STR is a LEN-codepoint string; it is |
863 | narrow if NARROW_P is true, wide otherwise. Return LEN. */ | |
864 | static size_t | |
865 | display_string_as_utf8 (const void *str, int narrow_p, size_t len, | |
866 | SCM port) | |
867 | { | |
868 | size_t printed = 0; | |
869 | ||
870 | while (len > printed) | |
871 | { | |
872 | size_t utf8_len, i; | |
873 | char *input, utf8_buf[256]; | |
874 | ||
875 | /* Convert STR to UTF-8. */ | |
876 | for (i = printed, utf8_len = 0, input = utf8_buf; | |
877 | i < len && utf8_len + 4 < sizeof (utf8_buf); | |
878 | i++) | |
879 | { | |
880 | utf8_len += codepoint_to_utf8 (STR_REF (str, i), | |
881 | (scm_t_uint8 *) input); | |
882 | input = utf8_buf + utf8_len; | |
883 | } | |
884 | ||
885 | /* INPUT was successfully converted, entirely; print the | |
886 | result. */ | |
f209aeee | 887 | scm_lfwrite_unlocked (utf8_buf, utf8_len, port); |
7b292a9d LC |
888 | printed += i - printed; |
889 | } | |
890 | ||
891 | assert (printed == len); | |
892 | ||
893 | return len; | |
894 | } | |
895 | ||
79eb47ea AW |
896 | /* Write STR to PORT as ISO-8859-1. STR is a LEN-codepoint string; it |
897 | is narrow if NARROW_P is true, wide otherwise. Return LEN. */ | |
898 | static size_t | |
899 | display_string_as_latin1 (const void *str, int narrow_p, size_t len, | |
900 | SCM port, | |
901 | scm_t_string_failed_conversion_handler strategy) | |
902 | { | |
903 | size_t printed = 0; | |
904 | ||
905 | if (narrow_p) | |
906 | { | |
907 | scm_lfwrite_unlocked (str, len, port); | |
908 | return len; | |
909 | } | |
910 | ||
911 | while (printed < len) | |
912 | { | |
913 | char buf[256]; | |
914 | size_t i; | |
915 | ||
916 | for (i = 0; i < sizeof(buf) && printed < len; i++, printed++) | |
917 | { | |
918 | scm_t_wchar c = STR_REF (str, printed); | |
919 | ||
920 | if (c < 256) | |
921 | buf[i] = c; | |
922 | else | |
923 | break; | |
924 | } | |
925 | ||
926 | scm_lfwrite_unlocked (buf, i, port); | |
927 | ||
928 | if (i < sizeof(buf) && printed < len) | |
929 | { | |
930 | if (strategy == SCM_FAILED_CONVERSION_ERROR) | |
931 | break; | |
932 | else if (strategy == SCM_FAILED_CONVERSION_ESCAPE_SEQUENCE) | |
933 | write_character_escaped (STR_REF (str, printed), 1, port); | |
934 | else | |
935 | /* STRATEGY is `SCM_FAILED_CONVERSION_QUESTION_MARK'. */ | |
936 | display_string ("?", 1, 1, port, strategy); | |
937 | printed++; | |
938 | } | |
939 | } | |
940 | ||
941 | return printed; | |
942 | } | |
943 | ||
7b292a9d LC |
944 | /* Convert STR through PORT's output conversion descriptor and write the |
945 | output to PORT. Return the number of codepoints written. */ | |
946 | static size_t | |
947 | display_string_using_iconv (const void *str, int narrow_p, size_t len, | |
948 | SCM port, | |
949 | scm_t_string_failed_conversion_handler strategy) | |
950 | { | |
f4bc4e59 | 951 | size_t printed; |
6c98257f | 952 | scm_t_iconv_descriptors *id; |
cdd3d6c9 | 953 | scm_t_port_internal *pti = SCM_PORT_GET_INTERNAL (port); |
f4bc4e59 | 954 | |
cdd3d6c9 MW |
955 | id = scm_i_port_iconv_descriptors (port, SCM_PORT_WRITE); |
956 | ||
957 | if (SCM_UNLIKELY (pti->at_stream_start_for_bom_write && len > 0)) | |
958 | { | |
959 | scm_t_port *pt = SCM_PTAB_ENTRY (port); | |
960 | ||
961 | /* Record that we're no longer at stream start. */ | |
962 | pti->at_stream_start_for_bom_write = 0; | |
963 | if (pt->rw_random) | |
964 | pti->at_stream_start_for_bom_read = 0; | |
965 | ||
966 | /* Write a BOM if appropriate. */ | |
f6f4feb0 MW |
967 | if (SCM_UNLIKELY (strcmp(pt->encoding, "UTF-16") == 0 |
968 | || strcmp(pt->encoding, "UTF-32") == 0)) | |
cdd3d6c9 MW |
969 | display_character (SCM_UNICODE_BOM, port, iconveh_error); |
970 | } | |
f4bc4e59 | 971 | |
f4bc4e59 LC |
972 | printed = 0; |
973 | ||
974 | while (len > printed) | |
975 | { | |
976 | size_t done, utf8_len, input_left, output_left, i; | |
977 | size_t codepoints_read, output_len; | |
978 | char *input, *output; | |
979 | char utf8_buf[256], encoded_output[256]; | |
980 | size_t offsets[256]; | |
981 | ||
982 | /* Convert STR to UTF-8. */ | |
983 | for (i = printed, utf8_len = 0, input = utf8_buf; | |
984 | i < len && utf8_len + 4 < sizeof (utf8_buf); | |
985 | i++) | |
07f49ac7 | 986 | { |
f4bc4e59 LC |
987 | offsets[utf8_len] = i; |
988 | utf8_len += codepoint_to_utf8 (STR_REF (str, i), | |
989 | (scm_t_uint8 *) input); | |
990 | input = utf8_buf + utf8_len; | |
991 | } | |
992 | ||
993 | input = utf8_buf; | |
994 | input_left = utf8_len; | |
995 | ||
996 | output = encoded_output; | |
997 | output_left = sizeof (encoded_output); | |
998 | ||
6c98257f | 999 | done = iconv (id->output_cd, &input, &input_left, |
f4bc4e59 | 1000 | &output, &output_left); |
07f49ac7 | 1001 | |
f4bc4e59 LC |
1002 | output_len = sizeof (encoded_output) - output_left; |
1003 | ||
1004 | if (SCM_UNLIKELY (done == (size_t) -1)) | |
1005 | { | |
b2548e23 AW |
1006 | int errno_save = errno; |
1007 | ||
f4bc4e59 | 1008 | /* Reset the `iconv' state. */ |
6c98257f | 1009 | iconv (id->output_cd, NULL, NULL, NULL, NULL); |
f4bc4e59 | 1010 | |
7174bc08 | 1011 | /* Print the OUTPUT_LEN bytes successfully converted. */ |
f209aeee | 1012 | scm_lfwrite_unlocked (encoded_output, output_len, port); |
7174bc08 LC |
1013 | |
1014 | /* See how many input codepoints these OUTPUT_LEN bytes | |
1015 | corresponds to. */ | |
1016 | codepoints_read = offsets[input - utf8_buf] - printed; | |
1017 | printed += codepoints_read; | |
1018 | ||
b2548e23 | 1019 | if (errno_save == EILSEQ && |
f4bc4e59 | 1020 | strategy != SCM_FAILED_CONVERSION_ERROR) |
07f49ac7 | 1021 | { |
f4bc4e59 LC |
1022 | /* Conversion failed somewhere in INPUT and we want to |
1023 | escape or substitute the offending input character. */ | |
1024 | ||
f4bc4e59 | 1025 | if (strategy == SCM_FAILED_CONVERSION_ESCAPE_SEQUENCE) |
f1ee6d54 | 1026 | { |
f4bc4e59 LC |
1027 | scm_t_wchar ch; |
1028 | ||
1029 | /* Find CH, the offending codepoint, and escape it. */ | |
1030 | ch = STR_REF (str, offsets[input - utf8_buf]); | |
1031 | write_character_escaped (ch, 1, port); | |
f1ee6d54 | 1032 | } |
07f49ac7 | 1033 | else |
f4bc4e59 LC |
1034 | /* STRATEGY is `SCM_FAILED_CONVERSION_QUESTION_MARK'. */ |
1035 | display_string ("?", 1, 1, port, strategy); | |
9c44cd45 | 1036 | |
f4bc4e59 LC |
1037 | printed++; |
1038 | } | |
1039 | else | |
1040 | /* Something bad happened that we can't handle: bail out. */ | |
1041 | break; | |
07f49ac7 LC |
1042 | } |
1043 | else | |
f4bc4e59 LC |
1044 | { |
1045 | /* INPUT was successfully converted, entirely; print the | |
1046 | result. */ | |
f209aeee | 1047 | scm_lfwrite_unlocked (encoded_output, output_len, port); |
f4bc4e59 LC |
1048 | codepoints_read = i - printed; |
1049 | printed += codepoints_read; | |
1050 | } | |
07f49ac7 LC |
1051 | } |
1052 | ||
1053 | return printed; | |
7b292a9d LC |
1054 | } |
1055 | ||
f4bc4e59 | 1056 | #undef STR_REF |
7b292a9d LC |
1057 | |
1058 | /* Display the LEN codepoints in STR to PORT according to STRATEGY; | |
1059 | return the number of codepoints successfully displayed. If NARROW_P, | |
1060 | then STR is interpreted as a sequence of `char', denoting a Latin-1 | |
1061 | string; otherwise it's interpreted as a sequence of | |
1062 | `scm_t_wchar'. */ | |
1063 | static size_t | |
1064 | display_string (const void *str, int narrow_p, | |
1065 | size_t len, SCM port, | |
1066 | scm_t_string_failed_conversion_handler strategy) | |
7b292a9d | 1067 | { |
e4598559 | 1068 | scm_t_port_internal *pti; |
7b292a9d | 1069 | |
e4598559 | 1070 | pti = SCM_PORT_GET_INTERNAL (port); |
7b292a9d | 1071 | |
337edc59 | 1072 | if (pti->encoding_mode == SCM_PORT_ENCODING_MODE_UTF8) |
7b292a9d | 1073 | return display_string_as_utf8 (str, narrow_p, len, port); |
f6f4feb0 | 1074 | else if (pti->encoding_mode == SCM_PORT_ENCODING_MODE_LATIN1) |
79eb47ea | 1075 | return display_string_as_latin1 (str, narrow_p, len, port, strategy); |
7b292a9d | 1076 | else |
79eb47ea | 1077 | return display_string_using_iconv (str, narrow_p, len, port, strategy); |
f4bc4e59 LC |
1078 | } |
1079 | ||
1080 | /* Attempt to display CH to PORT according to STRATEGY. Return non-zero | |
1081 | if CH was successfully displayed, zero otherwise (e.g., if it was not | |
1082 | representable in PORT's encoding.) */ | |
1083 | static int | |
1084 | display_character (scm_t_wchar ch, SCM port, | |
1085 | scm_t_string_failed_conversion_handler strategy) | |
1086 | { | |
1087 | return display_string (&ch, 0, 1, port, strategy) == 1; | |
07f49ac7 LC |
1088 | } |
1089 | ||
33d92fe6 LC |
1090 | /* Attempt to pretty-print CH, a combining character, to PORT. Return |
1091 | zero upon failure, non-zero otherwise. The idea is to print CH above | |
1092 | a dotted circle to make it more visible. */ | |
1093 | static int | |
1094 | write_combining_character (scm_t_wchar ch, SCM port) | |
1095 | { | |
f4bc4e59 LC |
1096 | scm_t_wchar str[2]; |
1097 | ||
1098 | str[0] = SCM_CODEPOINT_DOTTED_CIRCLE; | |
1099 | str[1] = ch; | |
1100 | ||
1101 | return display_string (str, 0, 2, port, iconveh_error) == 2; | |
1102 | } | |
33d92fe6 | 1103 | |
f4bc4e59 LC |
1104 | /* Write CH to PORT in its escaped form, using the string escape syntax |
1105 | if STRING_ESCAPES_P is non-zero. */ | |
1106 | static void | |
1107 | write_character_escaped (scm_t_wchar ch, int string_escapes_p, SCM port) | |
1108 | { | |
1109 | if (string_escapes_p) | |
33d92fe6 | 1110 | { |
f4bc4e59 LC |
1111 | /* Represent CH using the in-string escape syntax. */ |
1112 | ||
1113 | static const char hex[] = "0123456789abcdef"; | |
1114 | static const char escapes[7] = "abtnvfr"; | |
1115 | char buf[9]; | |
1116 | ||
1117 | if (ch >= 0x07 && ch <= 0x0D && ch != 0x0A) | |
33d92fe6 | 1118 | { |
f4bc4e59 LC |
1119 | /* Use special escapes for some C0 controls. */ |
1120 | buf[0] = '\\'; | |
1121 | buf[1] = escapes[ch - 0x07]; | |
f209aeee | 1122 | scm_lfwrite_unlocked (buf, 2, port); |
f4bc4e59 LC |
1123 | } |
1124 | else if (!SCM_R6RS_ESCAPES_P) | |
1125 | { | |
1126 | if (ch <= 0xFF) | |
1127 | { | |
1128 | buf[0] = '\\'; | |
1129 | buf[1] = 'x'; | |
1130 | buf[2] = hex[ch / 16]; | |
1131 | buf[3] = hex[ch % 16]; | |
f209aeee | 1132 | scm_lfwrite_unlocked (buf, 4, port); |
f4bc4e59 LC |
1133 | } |
1134 | else if (ch <= 0xFFFF) | |
1135 | { | |
1136 | buf[0] = '\\'; | |
1137 | buf[1] = 'u'; | |
1138 | buf[2] = hex[(ch & 0xF000) >> 12]; | |
1139 | buf[3] = hex[(ch & 0xF00) >> 8]; | |
1140 | buf[4] = hex[(ch & 0xF0) >> 4]; | |
1141 | buf[5] = hex[(ch & 0xF)]; | |
f209aeee | 1142 | scm_lfwrite_unlocked (buf, 6, port); |
f4bc4e59 LC |
1143 | } |
1144 | else if (ch > 0xFFFF) | |
1145 | { | |
1146 | buf[0] = '\\'; | |
1147 | buf[1] = 'U'; | |
1148 | buf[2] = hex[(ch & 0xF00000) >> 20]; | |
1149 | buf[3] = hex[(ch & 0xF0000) >> 16]; | |
1150 | buf[4] = hex[(ch & 0xF000) >> 12]; | |
1151 | buf[5] = hex[(ch & 0xF00) >> 8]; | |
1152 | buf[6] = hex[(ch & 0xF0) >> 4]; | |
1153 | buf[7] = hex[(ch & 0xF)]; | |
f209aeee | 1154 | scm_lfwrite_unlocked (buf, 8, port); |
f4bc4e59 | 1155 | } |
33d92fe6 LC |
1156 | } |
1157 | else | |
f4bc4e59 LC |
1158 | { |
1159 | /* Print an R6RS variable-length hex escape: "\xNNNN;". */ | |
1160 | scm_t_wchar ch2 = ch; | |
1161 | ||
1162 | int i = 8; | |
1163 | buf[i] = ';'; | |
1164 | i --; | |
1165 | if (ch == 0) | |
1166 | buf[i--] = '0'; | |
1167 | else | |
1168 | while (ch2 > 0) | |
1169 | { | |
1170 | buf[i] = hex[ch2 & 0xF]; | |
1171 | ch2 >>= 4; | |
1172 | i --; | |
1173 | } | |
1174 | buf[i] = 'x'; | |
1175 | i --; | |
1176 | buf[i] = '\\'; | |
f209aeee | 1177 | scm_lfwrite_unlocked (buf + i, 9 - i, port); |
f4bc4e59 | 1178 | } |
33d92fe6 LC |
1179 | } |
1180 | else | |
f4bc4e59 LC |
1181 | { |
1182 | /* Represent CH using the character escape syntax. */ | |
1183 | const char *name; | |
33d92fe6 | 1184 | |
f4bc4e59 LC |
1185 | name = scm_i_charname (SCM_MAKE_CHAR (ch)); |
1186 | if (name != NULL) | |
0607ebbf | 1187 | scm_puts_unlocked (name, port); |
f4bc4e59 LC |
1188 | else |
1189 | PRINT_CHAR_ESCAPE (ch, port); | |
1190 | } | |
33d92fe6 LC |
1191 | } |
1192 | ||
07f49ac7 LC |
1193 | /* Write CH to PORT, escaping it if it's non-graphic or not |
1194 | representable in PORT's encoding. If STRING_ESCAPES_P is true and CH | |
1195 | needs to be escaped, it is escaped using the in-string escape syntax; | |
1196 | otherwise the character escape syntax is used. */ | |
1197 | static void | |
1198 | write_character (scm_t_wchar ch, SCM port, int string_escapes_p) | |
1199 | { | |
1200 | int printed = 0; | |
f4bc4e59 LC |
1201 | scm_t_string_failed_conversion_handler strategy; |
1202 | ||
478848cb | 1203 | strategy = PORT_CONVERSION_HANDLER (port); |
07f49ac7 LC |
1204 | |
1205 | if (string_escapes_p) | |
1206 | { | |
1207 | /* Check if CH deserves special treatment. */ | |
1208 | if (ch == '"' || ch == '\\') | |
1209 | { | |
f4bc4e59 LC |
1210 | display_character ('\\', port, iconveh_question_mark); |
1211 | display_character (ch, port, strategy); | |
07f49ac7 LC |
1212 | printed = 1; |
1213 | } | |
8500b186 AW |
1214 | else if (ch == '\n' && SCM_PRINT_ESCAPE_NEWLINES_P) |
1215 | { | |
1216 | display_character ('\\', port, iconveh_question_mark); | |
1217 | display_character ('n', port, strategy); | |
1218 | printed = 1; | |
1219 | } | |
07f49ac7 LC |
1220 | else if (ch == ' ' || ch == '\n') |
1221 | { | |
f4bc4e59 | 1222 | display_character (ch, port, strategy); |
07f49ac7 LC |
1223 | printed = 1; |
1224 | } | |
1225 | } | |
1226 | else | |
33d92fe6 | 1227 | { |
f4bc4e59 | 1228 | display_string ("#\\", 1, 2, port, iconveh_question_mark); |
33d92fe6 LC |
1229 | |
1230 | if (uc_combining_class (ch) != UC_CCC_NR) | |
1231 | /* Character is a combining character, so attempt to | |
1232 | pretty-print it. */ | |
1233 | printed = write_combining_character (ch, port); | |
1234 | } | |
07f49ac7 LC |
1235 | |
1236 | if (!printed | |
1237 | && uc_is_general_category_withtable (ch, | |
1238 | UC_CATEGORY_MASK_L | | |
1239 | UC_CATEGORY_MASK_M | | |
1240 | UC_CATEGORY_MASK_N | | |
1241 | UC_CATEGORY_MASK_P | | |
1242 | UC_CATEGORY_MASK_S)) | |
1243 | /* CH is graphic; attempt to display it. */ | |
1244 | printed = display_character (ch, port, iconveh_error); | |
1245 | ||
1246 | if (!printed) | |
f4bc4e59 LC |
1247 | /* CH isn't graphic or cannot be represented in PORT's encoding. */ |
1248 | write_character_escaped (ch, string_escapes_p, port); | |
9c44cd45 | 1249 | } |
0f2d19dd | 1250 | |
b908768a LC |
1251 | /* Display STR to PORT from START inclusive to END exclusive. */ |
1252 | void | |
1253 | scm_i_display_substring (SCM str, size_t start, size_t end, SCM port) | |
1254 | { | |
1255 | int narrow_p; | |
1256 | const char *buf; | |
1257 | size_t len, printed; | |
1258 | ||
1259 | buf = scm_i_string_data (str); | |
1260 | len = end - start; | |
1261 | narrow_p = scm_i_is_narrow_string (str); | |
1262 | buf += start * (narrow_p ? sizeof (char) : sizeof (scm_t_wchar)); | |
1263 | ||
1264 | printed = display_string (buf, narrow_p, end - start, port, | |
1265 | PORT_CONVERSION_HANDLER (port)); | |
1266 | ||
1267 | if (SCM_UNLIKELY (printed < len)) | |
1268 | scm_encoding_error (__func__, errno, | |
1269 | "cannot convert to output locale", | |
1270 | port, scm_c_string_ref (str, printed + start)); | |
1271 | } | |
1272 | ||
1273 | \f | |
0f2d19dd JB |
1274 | /* Print an integer. |
1275 | */ | |
1cc91f1b | 1276 | |
0f2d19dd | 1277 | void |
a406c9e9 | 1278 | scm_intprint (scm_t_intmax n, int radix, SCM port) |
0f2d19dd JB |
1279 | { |
1280 | char num_buf[SCM_INTBUFLEN]; | |
f209aeee | 1281 | scm_lfwrite_unlocked (num_buf, scm_iint2str (n, radix, num_buf), port); |
0f2d19dd JB |
1282 | } |
1283 | ||
a406c9e9 MV |
1284 | void |
1285 | scm_uintprint (scm_t_uintmax n, int radix, SCM port) | |
1286 | { | |
1287 | char num_buf[SCM_INTBUFLEN]; | |
f209aeee | 1288 | scm_lfwrite_unlocked (num_buf, scm_iuint2str (n, radix, num_buf), port); |
a406c9e9 MV |
1289 | } |
1290 | ||
0f2d19dd JB |
1291 | /* Print an object of unrecognized type. |
1292 | */ | |
1cc91f1b | 1293 | |
0f2d19dd | 1294 | void |
1bbd0b84 | 1295 | scm_ipruk (char *hdr, SCM ptr, SCM port) |
0f2d19dd | 1296 | { |
0607ebbf AW |
1297 | scm_puts_unlocked ("#<unknown-", port); |
1298 | scm_puts_unlocked (hdr, port); | |
26224b3f | 1299 | if (1) /* (scm_in_heap_p (ptr)) */ /* FIXME */ |
0f2d19dd | 1300 | { |
0607ebbf | 1301 | scm_puts_unlocked (" (0x", port); |
0345e278 | 1302 | scm_uintprint (SCM_CELL_WORD_0 (ptr), 16, port); |
0607ebbf | 1303 | scm_puts_unlocked (" . 0x", port); |
0345e278 | 1304 | scm_uintprint (SCM_CELL_WORD_1 (ptr), 16, port); |
0607ebbf | 1305 | scm_puts_unlocked (") @", port); |
0f2d19dd | 1306 | } |
0607ebbf | 1307 | scm_puts_unlocked (" 0x", port); |
0345e278 | 1308 | scm_uintprint (SCM_UNPACK (ptr), 16, port); |
0607ebbf | 1309 | scm_putc_unlocked ('>', port); |
0f2d19dd JB |
1310 | } |
1311 | ||
1cc91f1b | 1312 | |
904a077d | 1313 | /* Print a list. |
22a52da1 | 1314 | */ |
0f2d19dd | 1315 | void |
34d19ef6 | 1316 | scm_iprlist (char *hdr, SCM exp, int tlr, SCM port, scm_print_state *pstate) |
0f2d19dd | 1317 | { |
c62fbfe1 | 1318 | register SCM hare, tortoise; |
c014a02e | 1319 | long floor = pstate->top - 2; |
0607ebbf | 1320 | scm_puts_unlocked (hdr, port); |
0f2d19dd | 1321 | /* CHECK_INTS; */ |
c62fbfe1 MD |
1322 | if (pstate->fancyp) |
1323 | goto fancy_printing; | |
1324 | ||
1325 | /* Run a hare and tortoise so that total time complexity will be | |
1326 | O(depth * N) instead of O(N^2). */ | |
1327 | hare = SCM_CDR (exp); | |
1328 | tortoise = exp; | |
d2e53ed6 | 1329 | while (scm_is_pair (hare)) |
c62fbfe1 | 1330 | { |
bc36d050 | 1331 | if (scm_is_eq (hare, tortoise)) |
c62fbfe1 MD |
1332 | goto fancy_printing; |
1333 | hare = SCM_CDR (hare); | |
d2e53ed6 | 1334 | if (!scm_is_pair (hare)) |
c62fbfe1 MD |
1335 | break; |
1336 | hare = SCM_CDR (hare); | |
1337 | tortoise = SCM_CDR (tortoise); | |
1338 | } | |
1339 | ||
1340 | /* No cdr cycles intrinsic to this list */ | |
1341 | scm_iprin1 (SCM_CAR (exp), port, pstate); | |
d2e53ed6 | 1342 | for (exp = SCM_CDR (exp); scm_is_pair (exp); exp = SCM_CDR (exp)) |
0f2d19dd | 1343 | { |
c014a02e | 1344 | register long i; |
5ca6dc39 | 1345 | |
c62fbfe1 | 1346 | for (i = floor; i >= 0; --i) |
509759dd | 1347 | if (scm_is_eq (PSTATE_STACK_REF(pstate, i), exp)) |
c62fbfe1 MD |
1348 | goto circref; |
1349 | PUSH_REF (pstate, exp); | |
0607ebbf | 1350 | scm_putc_unlocked (' ', port); |
0f2d19dd | 1351 | /* CHECK_INTS; */ |
c62fbfe1 | 1352 | scm_iprin1 (SCM_CAR (exp), port, pstate); |
0f2d19dd | 1353 | } |
c96d76b8 | 1354 | if (!SCM_NULL_OR_NIL_P (exp)) |
0f2d19dd | 1355 | { |
0607ebbf | 1356 | scm_puts_unlocked (" . ", port); |
c62fbfe1 | 1357 | scm_iprin1 (exp, port, pstate); |
0f2d19dd | 1358 | } |
c62fbfe1 | 1359 | |
a51ea417 | 1360 | end: |
0607ebbf | 1361 | scm_putc_unlocked (tlr, port); |
c62fbfe1 | 1362 | pstate->top = floor + 2; |
a51ea417 | 1363 | return; |
c62fbfe1 MD |
1364 | |
1365 | fancy_printing: | |
1366 | { | |
c014a02e | 1367 | long n = pstate->length; |
c62fbfe1 MD |
1368 | |
1369 | scm_iprin1 (SCM_CAR (exp), port, pstate); | |
1370 | exp = SCM_CDR (exp); --n; | |
d2e53ed6 | 1371 | for (; scm_is_pair (exp); exp = SCM_CDR (exp)) |
c62fbfe1 | 1372 | { |
c014a02e | 1373 | register unsigned long i; |
5ca6dc39 | 1374 | |
c62fbfe1 | 1375 | for (i = 0; i < pstate->top; ++i) |
509759dd | 1376 | if (scm_is_eq (PSTATE_STACK_REF(pstate, i), exp)) |
c62fbfe1 MD |
1377 | goto fancy_circref; |
1378 | if (pstate->fancyp) | |
1379 | { | |
1380 | if (n == 0) | |
1381 | { | |
0607ebbf | 1382 | scm_puts_unlocked (" ...", port); |
c62fbfe1 MD |
1383 | goto skip_tail; |
1384 | } | |
1385 | else | |
1386 | --n; | |
1387 | } | |
1388 | PUSH_REF(pstate, exp); | |
1389 | ++pstate->list_offset; | |
0607ebbf | 1390 | scm_putc_unlocked (' ', port); |
c62fbfe1 MD |
1391 | /* CHECK_INTS; */ |
1392 | scm_iprin1 (SCM_CAR (exp), port, pstate); | |
1393 | } | |
1394 | } | |
c96d76b8 | 1395 | if (!SCM_NULL_OR_NIL_P (exp)) |
c62fbfe1 | 1396 | { |
0607ebbf | 1397 | scm_puts_unlocked (" . ", port); |
c62fbfe1 MD |
1398 | scm_iprin1 (exp, port, pstate); |
1399 | } | |
1400 | skip_tail: | |
1401 | pstate->list_offset -= pstate->top - floor - 2; | |
a51ea417 | 1402 | goto end; |
a51ea417 | 1403 | |
c62fbfe1 MD |
1404 | fancy_circref: |
1405 | pstate->list_offset -= pstate->top - floor - 2; | |
1406 | ||
1407 | circref: | |
0607ebbf | 1408 | scm_puts_unlocked (" . ", port); |
c62fbfe1 MD |
1409 | print_circref (port, pstate, exp); |
1410 | goto end; | |
0f2d19dd JB |
1411 | } |
1412 | ||
1413 | \f | |
1414 | ||
bb35f315 MV |
1415 | int |
1416 | scm_valid_oport_value_p (SCM val) | |
1417 | { | |
368cf54d GB |
1418 | return (SCM_OPOUTPORTP (val) |
1419 | || (SCM_PORT_WITH_PS_P (val) | |
1420 | && SCM_OPOUTPORTP (SCM_PORT_WITH_PS_PORT (val)))); | |
bb35f315 MV |
1421 | } |
1422 | ||
8b840115 | 1423 | /* SCM_GPROC(s_write, "write", 1, 1, 0, scm_write, g_write); */ |
1cc91f1b | 1424 | |
0f2d19dd | 1425 | SCM |
1bbd0b84 | 1426 | scm_write (SCM obj, SCM port) |
0f2d19dd JB |
1427 | { |
1428 | if (SCM_UNBNDP (port)) | |
9de87eea | 1429 | port = scm_current_output_port (); |
3eb7e6ee JB |
1430 | |
1431 | SCM_ASSERT (scm_valid_oport_value_p (port), port, SCM_ARG2, s_write); | |
bb35f315 | 1432 | |
215fe3a8 | 1433 | scm_dynwind_begin (0); |
92c0ebac | 1434 | scm_dynwind_lock_port (SCM_COERCE_OUTPORT (port)); |
a51ea417 | 1435 | scm_prin1 (obj, port, 1); |
215fe3a8 AW |
1436 | scm_dynwind_end (); |
1437 | ||
0f2d19dd JB |
1438 | return SCM_UNSPECIFIED; |
1439 | } | |
1440 | ||
1441 | ||
8b840115 | 1442 | /* SCM_GPROC(s_display, "display", 1, 1, 0, scm_display, g_display); */ |
1cc91f1b | 1443 | |
0f2d19dd | 1444 | SCM |
1bbd0b84 | 1445 | scm_display (SCM obj, SCM port) |
0f2d19dd JB |
1446 | { |
1447 | if (SCM_UNBNDP (port)) | |
9de87eea | 1448 | port = scm_current_output_port (); |
3eb7e6ee JB |
1449 | |
1450 | SCM_ASSERT (scm_valid_oport_value_p (port), port, SCM_ARG2, s_display); | |
bb35f315 | 1451 | |
215fe3a8 | 1452 | scm_dynwind_begin (0); |
92c0ebac | 1453 | scm_dynwind_lock_port (SCM_COERCE_OUTPORT (port)); |
a51ea417 | 1454 | scm_prin1 (obj, port, 0); |
215fe3a8 AW |
1455 | scm_dynwind_end (); |
1456 | ||
0f2d19dd JB |
1457 | return SCM_UNSPECIFIED; |
1458 | } | |
1459 | ||
70d63753 GB |
1460 | |
1461 | SCM_DEFINE (scm_simple_format, "simple-format", 2, 0, 1, | |
1462 | (SCM destination, SCM message, SCM args), | |
eca65e90 MG |
1463 | "Write @var{message} to @var{destination}, defaulting to\n" |
1464 | "the current output port.\n" | |
1465 | "@var{message} can contain @code{~A} (was @code{%s}) and\n" | |
1466 | "@code{~S} (was @code{%S}) escapes. When printed,\n" | |
1467 | "the escapes are replaced with corresponding members of\n" | |
b7e64f8b | 1468 | "@var{args}:\n" |
eca65e90 MG |
1469 | "@code{~A} formats using @code{display} and @code{~S} formats\n" |
1470 | "using @code{write}.\n" | |
1471 | "If @var{destination} is @code{#t}, then use the current output\n" | |
1472 | "port, if @var{destination} is @code{#f}, then return a string\n" | |
1473 | "containing the formatted text. Does not add a trailing newline.") | |
70d63753 GB |
1474 | #define FUNC_NAME s_scm_simple_format |
1475 | { | |
dfd03fb9 | 1476 | SCM port, answer = SCM_UNSPECIFIED; |
70d63753 GB |
1477 | int fReturnString = 0; |
1478 | int writingp; | |
889975e5 | 1479 | size_t start, p, end; |
70d63753 | 1480 | |
bc36d050 | 1481 | if (scm_is_eq (destination, SCM_BOOL_T)) |
daba1a71 | 1482 | { |
9de87eea | 1483 | destination = port = scm_current_output_port (); |
daba1a71 | 1484 | } |
7888309b | 1485 | else if (scm_is_false (destination)) |
daba1a71 MD |
1486 | { |
1487 | fReturnString = 1; | |
0b2c2ba3 | 1488 | port = scm_mkstrport (SCM_INUM0, SCM_BOOL_F, |
dfd03fb9 MD |
1489 | SCM_OPN | SCM_WRTNG, |
1490 | FUNC_NAME); | |
1491 | destination = port; | |
daba1a71 MD |
1492 | } |
1493 | else | |
1494 | { | |
1495 | SCM_VALIDATE_OPORT_VALUE (1, destination); | |
dfd03fb9 | 1496 | port = SCM_COERCE_OUTPORT (destination); |
daba1a71 MD |
1497 | } |
1498 | SCM_VALIDATE_STRING (2, message); | |
af45e3b0 | 1499 | SCM_VALIDATE_REST_ARGUMENT (args); |
70d63753 | 1500 | |
889975e5 MG |
1501 | p = 0; |
1502 | start = 0; | |
1503 | end = scm_i_string_length (message); | |
b24b5e13 | 1504 | for (p = start; p != end; ++p) |
889975e5 | 1505 | if (scm_i_string_ref (message, p) == '~') |
70d63753 | 1506 | { |
b24b5e13 | 1507 | if (++p == end) |
6662998f MV |
1508 | break; |
1509 | ||
889975e5 | 1510 | switch (scm_i_string_ref (message, p)) |
6662998f MV |
1511 | { |
1512 | case 'A': case 'a': | |
1513 | writingp = 0; | |
1514 | break; | |
1515 | case 'S': case 's': | |
1516 | writingp = 1; | |
1517 | break; | |
1518 | case '~': | |
889975e5 | 1519 | scm_lfwrite_substr (message, start, p, port); |
6662998f MV |
1520 | start = p + 1; |
1521 | continue; | |
1522 | case '%': | |
889975e5 | 1523 | scm_lfwrite_substr (message, start, p - 1, port); |
dfd03fb9 | 1524 | scm_newline (port); |
6662998f MV |
1525 | start = p + 1; |
1526 | continue; | |
1527 | default: | |
1afff620 | 1528 | SCM_MISC_ERROR ("FORMAT: Unsupported format option ~~~A - use (ice-9 format) instead", |
889975e5 | 1529 | scm_list_1 (SCM_MAKE_CHAR (scm_i_string_ref (message, p)))); |
6662998f MV |
1530 | |
1531 | } | |
70d63753 | 1532 | |
6662998f | 1533 | |
d2e53ed6 | 1534 | if (!scm_is_pair (args)) |
1afff620 | 1535 | SCM_MISC_ERROR ("FORMAT: Missing argument for ~~~A", |
889975e5 | 1536 | scm_list_1 (SCM_MAKE_CHAR (scm_i_string_ref (message, p)))); |
6662998f | 1537 | |
889975e5 | 1538 | scm_lfwrite_substr (message, start, p - 1, port); |
dfd03fb9 | 1539 | /* we pass destination here */ |
70d63753 GB |
1540 | scm_prin1 (SCM_CAR (args), destination, writingp); |
1541 | args = SCM_CDR (args); | |
1542 | start = p + 1; | |
1543 | } | |
6662998f | 1544 | |
889975e5 | 1545 | scm_lfwrite_substr (message, start, p, port); |
bc36d050 | 1546 | if (!scm_is_eq (args, SCM_EOL)) |
1afff620 KN |
1547 | SCM_MISC_ERROR ("FORMAT: ~A superfluous arguments", |
1548 | scm_list_1 (scm_length (args))); | |
70d63753 GB |
1549 | |
1550 | if (fReturnString) | |
1551 | answer = scm_strport_to_string (destination); | |
1552 | ||
daba1a71 | 1553 | return scm_return_first (answer, message); |
70d63753 GB |
1554 | } |
1555 | #undef FUNC_NAME | |
1556 | ||
1557 | ||
3b3b36dd | 1558 | SCM_DEFINE (scm_newline, "newline", 0, 1, 0, |
b450f070 | 1559 | (SCM port), |
8f85c0c6 NJ |
1560 | "Send a newline to @var{port}.\n" |
1561 | "If @var{port} is omitted, send to the current output port.") | |
1bbd0b84 | 1562 | #define FUNC_NAME s_scm_newline |
0f2d19dd JB |
1563 | { |
1564 | if (SCM_UNBNDP (port)) | |
9de87eea | 1565 | port = scm_current_output_port (); |
3eb7e6ee | 1566 | |
34d19ef6 | 1567 | SCM_VALIDATE_OPORT_VALUE (1, port); |
bb35f315 | 1568 | |
0607ebbf | 1569 | scm_putc_unlocked ('\n', SCM_COERCE_OUTPORT (port)); |
0f2d19dd JB |
1570 | return SCM_UNSPECIFIED; |
1571 | } | |
1bbd0b84 | 1572 | #undef FUNC_NAME |
0f2d19dd | 1573 | |
3b3b36dd | 1574 | SCM_DEFINE (scm_write_char, "write-char", 1, 1, 0, |
b450f070 | 1575 | (SCM chr, SCM port), |
eca65e90 | 1576 | "Send character @var{chr} to @var{port}.") |
1bbd0b84 | 1577 | #define FUNC_NAME s_scm_write_char |
0f2d19dd JB |
1578 | { |
1579 | if (SCM_UNBNDP (port)) | |
9de87eea | 1580 | port = scm_current_output_port (); |
3eb7e6ee | 1581 | |
34d19ef6 HWN |
1582 | SCM_VALIDATE_CHAR (1, chr); |
1583 | SCM_VALIDATE_OPORT_VALUE (2, port); | |
07f49ac7 LC |
1584 | |
1585 | port = SCM_COERCE_OUTPORT (port); | |
1586 | if (!display_character (SCM_CHAR (chr), port, | |
478848cb | 1587 | PORT_CONVERSION_HANDLER (port))) |
07f49ac7 LC |
1588 | scm_encoding_error (__func__, errno, |
1589 | "cannot convert to output locale", | |
6851d3be | 1590 | port, chr); |
07f49ac7 | 1591 | |
0f2d19dd JB |
1592 | return SCM_UNSPECIFIED; |
1593 | } | |
1bbd0b84 | 1594 | #undef FUNC_NAME |
0f2d19dd | 1595 | |
0f2d19dd JB |
1596 | \f |
1597 | ||
bb35f315 | 1598 | /* Call back to Scheme code to do the printing of special objects |
c19bc088 MD |
1599 | * (like structs). SCM_PRINTER_APPLY applies PROC to EXP and a smob |
1600 | * containing PORT and PSTATE. This object can be used as the port for | |
1601 | * display/write etc to continue the current print chain. The REVEALED | |
1602 | * field of PSTATE is set to true to indicate that the print state has | |
1603 | * escaped to Scheme and thus has to be freed by the GC. | |
1604 | */ | |
1605 | ||
92c2555f | 1606 | scm_t_bits scm_tc16_port_with_ps; |
c19bc088 MD |
1607 | |
1608 | /* Print exactly as the port itself would */ | |
1609 | ||
1610 | static int | |
e841c3e0 | 1611 | port_with_ps_print (SCM obj, SCM port, scm_print_state *pstate) |
c19bc088 MD |
1612 | { |
1613 | obj = SCM_PORT_WITH_PS_PORT (obj); | |
62bd5d66 | 1614 | return SCM_PORT_DESCRIPTOR (obj)->print (obj, port, pstate); |
c19bc088 | 1615 | } |
c4f37e80 MV |
1616 | |
1617 | SCM | |
1bbd0b84 | 1618 | scm_printer_apply (SCM proc, SCM exp, SCM port, scm_print_state *pstate) |
c4f37e80 | 1619 | { |
bb35f315 | 1620 | pstate->revealed = 1; |
dfd03fb9 MD |
1621 | return scm_call_2 (proc, exp, |
1622 | scm_i_port_with_print_state (port, pstate->handle)); | |
c19bc088 MD |
1623 | } |
1624 | ||
dfd03fb9 | 1625 | SCM_DEFINE (scm_port_with_print_state, "port-with-print-state", 1, 1, 0, |
1bbd0b84 | 1626 | (SCM port, SCM pstate), |
71331188 | 1627 | "Create a new port which behaves like @var{port}, but with an\n" |
dfd03fb9 MD |
1628 | "included print state @var{pstate}. @var{pstate} is optional.\n" |
1629 | "If @var{pstate} isn't supplied and @var{port} already has\n" | |
1630 | "a print state, the old print state is reused.") | |
1bbd0b84 | 1631 | #define FUNC_NAME s_scm_port_with_print_state |
c19bc088 | 1632 | { |
34d19ef6 | 1633 | SCM_VALIDATE_OPORT_VALUE (1, port); |
dfd03fb9 MD |
1634 | if (!SCM_UNBNDP (pstate)) |
1635 | SCM_VALIDATE_PRINTSTATE (2, pstate); | |
1636 | return scm_i_port_with_print_state (port, pstate); | |
c19bc088 | 1637 | } |
1bbd0b84 | 1638 | #undef FUNC_NAME |
c19bc088 | 1639 | |
a1ec6916 | 1640 | SCM_DEFINE (scm_get_print_state, "get-print-state", 1, 0, 0, |
1bbd0b84 | 1641 | (SCM port), |
71331188 MG |
1642 | "Return the print state of the port @var{port}. If @var{port}\n" |
1643 | "has no associated print state, @code{#f} is returned.") | |
1bbd0b84 | 1644 | #define FUNC_NAME s_scm_get_print_state |
c19bc088 | 1645 | { |
368cf54d GB |
1646 | if (SCM_PORT_WITH_PS_P (port)) |
1647 | return SCM_PORT_WITH_PS_PS (port); | |
f5f2dcff | 1648 | if (SCM_OUTPUT_PORT_P (port)) |
368cf54d | 1649 | return SCM_BOOL_F; |
276dd677 | 1650 | SCM_WRONG_TYPE_ARG (1, port); |
c4f37e80 | 1651 | } |
1bbd0b84 | 1652 | #undef FUNC_NAME |
bb35f315 | 1653 | |
c4f37e80 | 1654 | \f |
1cc91f1b | 1655 | |
0f2d19dd JB |
1656 | void |
1657 | scm_init_print () | |
0f2d19dd | 1658 | { |
231dd356 | 1659 | SCM type; |
d5cf5324 | 1660 | |
231dd356 AW |
1661 | type = scm_make_vtable (scm_from_locale_string (SCM_PRINT_STATE_LAYOUT), |
1662 | SCM_BOOL_F); | |
4a655e50 | 1663 | scm_set_struct_vtable_name_x (type, scm_from_latin1_symbol ("print-state")); |
bb35f315 | 1664 | scm_print_state_vtable = type; |
c4f37e80 | 1665 | |
c19bc088 MD |
1666 | /* Don't want to bind a wrapper class in GOOPS, so pass 0 as arg1. */ |
1667 | scm_tc16_port_with_ps = scm_make_smob_type (0, 0); | |
e841c3e0 | 1668 | scm_set_smob_print (scm_tc16_port_with_ps, port_with_ps_print); |
81ae25da | 1669 | |
a0599745 | 1670 | #include "libguile/print.x" |
475fa9a5 | 1671 | |
8500b186 AW |
1672 | scm_init_opts (scm_print_options, scm_print_opts); |
1673 | scm_print_opts[SCM_PRINT_HIGHLIGHT_PREFIX_I].val = | |
1674 | SCM_UNPACK (scm_from_locale_string ("{")); | |
1675 | scm_print_opts[SCM_PRINT_HIGHLIGHT_SUFFIX_I].val = | |
1676 | SCM_UNPACK (scm_from_locale_string ("}")); | |
475fa9a5 | 1677 | scm_print_opts[SCM_PRINT_KEYWORD_STYLE_I].val = SCM_UNPACK (sym_reader); |
0f2d19dd | 1678 | } |
89e00824 ML |
1679 | |
1680 | /* | |
1681 | Local Variables: | |
1682 | c-file-style: "gnu" | |
1683 | End: | |
1684 | */ |