Commit | Line | Data |
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15635be5 | 1 | /* Copyright (C) 1995-1999,2000,2001, 2002, 2003 Free Software Foundation, Inc. |
0f2d19dd | 2 | * |
73be1d9e MV |
3 | * This library is free software; you can redistribute it and/or |
4 | * modify it under the terms of the GNU Lesser General Public | |
5 | * License as published by the Free Software Foundation; either | |
6 | * version 2.1 of the License, or (at your option) any later version. | |
0f2d19dd | 7 | * |
73be1d9e MV |
8 | * This library is distributed in the hope that it will be useful, |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
11 | * Lesser General Public License for more details. | |
0f2d19dd | 12 | * |
73be1d9e MV |
13 | * You should have received a copy of the GNU Lesser General Public |
14 | * License along with this library; if not, write to the Free Software | |
15 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
16 | */ | |
1bbd0b84 | 17 | |
1bbd0b84 | 18 | |
0f2d19dd JB |
19 | \f |
20 | ||
e6e2e95a MD |
21 | #include <errno.h> |
22 | ||
a0599745 MD |
23 | #include "libguile/_scm.h" |
24 | #include "libguile/chars.h" | |
a002f1a2 | 25 | #include "libguile/continuations.h" |
a0599745 MD |
26 | #include "libguile/smob.h" |
27 | #include "libguile/eval.h" | |
28 | #include "libguile/macros.h" | |
29 | #include "libguile/procprop.h" | |
30 | #include "libguile/read.h" | |
31 | #include "libguile/weaks.h" | |
32 | #include "libguile/unif.h" | |
33 | #include "libguile/alist.h" | |
34 | #include "libguile/struct.h" | |
35 | #include "libguile/objects.h" | |
36 | #include "libguile/ports.h" | |
37 | #include "libguile/root.h" | |
38 | #include "libguile/strings.h" | |
39 | #include "libguile/strports.h" | |
40 | #include "libguile/vectors.h" | |
c96d76b8 | 41 | #include "libguile/lang.h" |
327967ef | 42 | #include "libguile/numbers.h" |
a0599745 MD |
43 | |
44 | #include "libguile/validate.h" | |
45 | #include "libguile/print.h" | |
0f2d19dd JB |
46 | \f |
47 | ||
48 | /* {Names of immediate symbols} | |
49 | * | |
50 | * This table must agree with the declarations in scm.h: {Immediate Symbols}. | |
51 | */ | |
52 | ||
e17d318f DH |
53 | /* This table must agree with the list of flags in tags.h. */ |
54 | static const char *iflagnames[] = | |
55 | { | |
56 | "#f", | |
57 | "#t", | |
58 | "#<undefined>", | |
59 | "#<eof>", | |
60 | "()", | |
61 | "#<unspecified>", | |
62 | ||
63 | /* Unbound slot marker for GOOPS. For internal use in GOOPS only. */ | |
64 | "#<unbound>", | |
65 | ||
66 | /* Elisp nil value. This is its Scheme name; whenever it's printed in | |
67 | * Elisp, it should appear as the symbol `nil'. */ | |
68 | "#nil" | |
69 | }; | |
70 | ||
92c2555f | 71 | scm_t_option scm_print_opts[] = { |
726d810a DH |
72 | { SCM_OPTION_SCM, "closure-hook", SCM_UNPACK (SCM_BOOL_F), |
73 | "Hook for printing closures (should handle macros as well)." }, | |
84f6a34a MD |
74 | { SCM_OPTION_BOOLEAN, "source", 0, |
75 | "Print closures with source." } | |
e6e4c9af MD |
76 | }; |
77 | ||
a1ec6916 | 78 | SCM_DEFINE (scm_print_options, "print-options-interface", 0, 1, 0, |
1bbd0b84 | 79 | (SCM setting), |
71331188 | 80 | "Option interface for the print options. Instead of using\n" |
1dd05fd8 MG |
81 | "this procedure directly, use the procedures\n" |
82 | "@code{print-enable}, @code{print-disable}, @code{print-set!}\n" | |
83 | "and @code{print-options}.") | |
1bbd0b84 | 84 | #define FUNC_NAME s_scm_print_options |
e6e4c9af | 85 | { |
a51ea417 | 86 | SCM ans = scm_options (setting, |
b7ff98dd MD |
87 | scm_print_opts, |
88 | SCM_N_PRINT_OPTIONS, | |
1bbd0b84 | 89 | FUNC_NAME); |
e6e4c9af MD |
90 | return ans; |
91 | } | |
1bbd0b84 | 92 | #undef FUNC_NAME |
e6e4c9af | 93 | |
0f2d19dd JB |
94 | \f |
95 | /* {Printing of Scheme Objects} | |
96 | */ | |
97 | ||
a51ea417 | 98 | /* Detection of circular references. |
c62fbfe1 MD |
99 | * |
100 | * Due to other constraints in the implementation, this code has bad | |
5d46ebe3 MD |
101 | * time complexity (O (depth * N)), The printer code can be |
102 | * rewritten to be O(N). | |
a51ea417 | 103 | */ |
c62fbfe1 | 104 | #define PUSH_REF(pstate, obj) \ |
1bbd0b84 | 105 | do { \ |
c62fbfe1 MD |
106 | pstate->ref_stack[pstate->top++] = (obj); \ |
107 | if (pstate->top == pstate->ceiling) \ | |
108 | grow_ref_stack (pstate); \ | |
1bbd0b84 | 109 | } while(0) |
a51ea417 | 110 | |
c62fbfe1 | 111 | #define ENTER_NESTED_DATA(pstate, obj, label) \ |
1bbd0b84 | 112 | do { \ |
5ca6dc39 | 113 | register unsigned long i; \ |
c62fbfe1 | 114 | for (i = 0; i < pstate->top; ++i) \ |
230d095f | 115 | if (SCM_EQ_P (pstate->ref_stack[i], (obj))) \ |
c62fbfe1 MD |
116 | goto label; \ |
117 | if (pstate->fancyp) \ | |
118 | { \ | |
119 | if (pstate->top - pstate->list_offset >= pstate->level) \ | |
120 | { \ | |
b7f3516f | 121 | scm_putc ('#', port); \ |
c62fbfe1 MD |
122 | return; \ |
123 | } \ | |
124 | } \ | |
125 | PUSH_REF(pstate, obj); \ | |
1bbd0b84 | 126 | } while(0) |
a51ea417 | 127 | |
c62fbfe1 MD |
128 | #define EXIT_NESTED_DATA(pstate) { --pstate->top; } |
129 | ||
d5cf5324 DH |
130 | SCM scm_print_state_vtable = SCM_BOOL_F; |
131 | static SCM print_state_pool = SCM_EOL; | |
dfd03fb9 | 132 | SCM_MUTEX (print_state_mutex); |
c4f37e80 | 133 | |
f843a84c | 134 | #ifdef GUILE_DEBUG /* Used for debugging purposes */ |
1cc91f1b | 135 | |
3b3b36dd | 136 | SCM_DEFINE (scm_current_pstate, "current-pstate", 0, 0, 0, |
1bbd0b84 | 137 | (), |
d5cf5324 | 138 | "Return the current-pstate -- the car of the\n" |
5352393c MG |
139 | "@code{print_state_pool}. @code{current-pstate} is only\n" |
140 | "included in @code{--enable-guile-debug} builds.") | |
1bbd0b84 | 141 | #define FUNC_NAME s_scm_current_pstate |
c62fbfe1 | 142 | { |
d5cf5324 DH |
143 | if (!SCM_NULLP (print_state_pool)) |
144 | return SCM_CAR (print_state_pool); | |
a0adfbf0 | 145 | else |
0a284a4e | 146 | return SCM_BOOL_F; |
c62fbfe1 | 147 | } |
1bbd0b84 GB |
148 | #undef FUNC_NAME |
149 | ||
c62fbfe1 MD |
150 | #endif |
151 | ||
152 | #define PSTATE_SIZE 50L | |
153 | ||
698c0295 | 154 | static SCM |
1bbd0b84 | 155 | make_print_state (void) |
698c0295 | 156 | { |
d5cf5324 DH |
157 | SCM print_state |
158 | = scm_make_struct (scm_print_state_vtable, SCM_INUM0, SCM_EOL); | |
bf685b6d | 159 | scm_print_state *pstate = SCM_PRINT_STATE (print_state); |
00ffa0e7 | 160 | pstate->ref_vect = scm_c_make_vector (PSTATE_SIZE, SCM_UNDEFINED); |
34d19ef6 | 161 | pstate->ref_stack = SCM_WRITABLE_VELTS (pstate->ref_vect); |
b17004b8 | 162 | pstate->ceiling = SCM_VECTOR_LENGTH (pstate->ref_vect); |
698c0295 MD |
163 | return print_state; |
164 | } | |
1cc91f1b | 165 | |
c62fbfe1 MD |
166 | SCM |
167 | scm_make_print_state () | |
c62fbfe1 | 168 | { |
230d095f | 169 | SCM answer = SCM_BOOL_F; |
698c0295 MD |
170 | |
171 | /* First try to allocate a print state from the pool */ | |
dfd03fb9 | 172 | scm_i_plugin_mutex_lock (&print_state_mutex); |
d5cf5324 | 173 | if (!SCM_NULLP (print_state_pool)) |
698c0295 | 174 | { |
d5cf5324 DH |
175 | answer = SCM_CAR (print_state_pool); |
176 | print_state_pool = SCM_CDR (print_state_pool); | |
698c0295 | 177 | } |
dfd03fb9 | 178 | scm_i_plugin_mutex_unlock (&print_state_mutex); |
698c0295 | 179 | |
230d095f | 180 | return SCM_FALSEP (answer) ? make_print_state () : answer; |
c62fbfe1 | 181 | } |
a51ea417 | 182 | |
698c0295 | 183 | void |
6e8d25a6 | 184 | scm_free_print_state (SCM print_state) |
698c0295 MD |
185 | { |
186 | SCM handle; | |
187 | scm_print_state *pstate = SCM_PRINT_STATE (print_state); | |
188 | /* Cleanup before returning print state to pool. | |
189 | * It is better to do it here. Doing it in scm_prin1 | |
190 | * would cost more since that function is called much more | |
191 | * often. | |
192 | */ | |
193 | pstate->fancyp = 0; | |
bb35f315 | 194 | pstate->revealed = 0; |
dfd03fb9 | 195 | scm_i_plugin_mutex_lock (&print_state_mutex); |
16d4699b | 196 | handle = scm_cons (print_state, print_state_pool); |
d5cf5324 | 197 | print_state_pool = handle; |
dfd03fb9 MD |
198 | scm_i_plugin_mutex_unlock (&print_state_mutex); |
199 | } | |
200 | ||
201 | SCM | |
202 | scm_i_port_with_print_state (SCM port, SCM print_state) | |
203 | { | |
204 | if (SCM_UNBNDP (print_state)) | |
205 | { | |
206 | if (SCM_PORT_WITH_PS_P (port)) | |
207 | return port; | |
208 | else | |
209 | print_state = scm_make_print_state (); | |
210 | /* port does not need to be coerced since it doesn't have ps */ | |
211 | } | |
212 | else | |
213 | port = SCM_COERCE_OUTPORT (port); | |
214 | SCM_RETURN_NEWSMOB (scm_tc16_port_with_ps, | |
215 | SCM_UNPACK (scm_cons (port, print_state))); | |
698c0295 | 216 | } |
1cc91f1b | 217 | |
a51ea417 | 218 | static void |
1bbd0b84 | 219 | grow_ref_stack (scm_print_state *pstate) |
a51ea417 | 220 | { |
b17004b8 | 221 | unsigned long int old_size = SCM_VECTOR_LENGTH (pstate->ref_vect); |
34d19ef6 | 222 | SCM const *old_elts = SCM_VELTS (pstate->ref_vect); |
b17004b8 | 223 | unsigned long int new_size = 2 * pstate->ceiling; |
00ffa0e7 | 224 | SCM new_vect = scm_c_make_vector (new_size, SCM_UNDEFINED); |
b17004b8 DH |
225 | unsigned long int i; |
226 | ||
227 | for (i = 0; i != old_size; ++i) | |
34d19ef6 | 228 | SCM_VECTOR_SET (new_vect, i, old_elts [i]); |
b17004b8 DH |
229 | |
230 | pstate->ref_vect = new_vect; | |
34d19ef6 | 231 | pstate->ref_stack = SCM_WRITABLE_VELTS(new_vect); |
bf685b6d | 232 | pstate->ceiling = new_size; |
a51ea417 MD |
233 | } |
234 | ||
1cc91f1b | 235 | |
a51ea417 | 236 | static void |
34d19ef6 | 237 | print_circref (SCM port, scm_print_state *pstate, SCM ref) |
a51ea417 | 238 | { |
c014a02e ML |
239 | register long i; |
240 | long self = pstate->top - 1; | |
c62fbfe1 MD |
241 | i = pstate->top - 1; |
242 | if (SCM_CONSP (pstate->ref_stack[i])) | |
243 | { | |
244 | while (i > 0) | |
245 | { | |
d5cf5324 | 246 | if (!SCM_CONSP (pstate->ref_stack[i - 1]) |
230d095f DH |
247 | || !SCM_EQ_P (SCM_CDR (pstate->ref_stack[i - 1]), |
248 | pstate->ref_stack[i])) | |
c62fbfe1 MD |
249 | break; |
250 | --i; | |
251 | } | |
252 | self = i; | |
253 | } | |
254 | for (i = pstate->top - 1; 1; --i) | |
230d095f | 255 | if (SCM_EQ_P (pstate->ref_stack[i], ref)) |
c62fbfe1 | 256 | break; |
b7f3516f | 257 | scm_putc ('#', port); |
c62fbfe1 | 258 | scm_intprint (i - self, 10, port); |
b7f3516f | 259 | scm_putc ('#', port); |
a51ea417 MD |
260 | } |
261 | ||
6662998f MV |
262 | /* Print the name of a symbol. */ |
263 | ||
264 | void | |
265 | scm_print_symbol_name (const char *str, size_t len, SCM port) | |
266 | { | |
c6b49e89 MV |
267 | /* This points to the first character that has not yet been written to the |
268 | * port. */ | |
269 | size_t pos = 0; | |
270 | /* This points to the character we're currently looking at. */ | |
6662998f | 271 | size_t end; |
c6b49e89 MV |
272 | /* If the name contains weird characters, we'll escape them with |
273 | * backslashes and set this flag; it indicates that we should surround the | |
274 | * name with "#{" and "}#". */ | |
275 | int weird = 0; | |
276 | /* Backslashes are not sufficient to make a name weird, but if a name is | |
277 | * weird because of other characters, backslahes need to be escaped too. | |
278 | * The first time we see a backslash, we set maybe_weird, and mw_pos points | |
279 | * to the backslash. Then if the name turns out to be weird, we re-process | |
327967ef MV |
280 | * everything starting from mw_pos. |
281 | * We could instead make backslashes always weird. This is not necessary | |
282 | * to ensure that the output is (read)-able, but it would make this code | |
283 | * simpler and faster. */ | |
c6b49e89 | 284 | int maybe_weird = 0; |
6662998f | 285 | size_t mw_pos = 0; |
6662998f | 286 | |
327967ef MV |
287 | if (len == 0 || str[0] == '\'' || str[0] == '`' || str[0] == ',' || |
288 | str[0] == ':' || str[len-1] == ':' || (str[0] == '.' && len == 1) || | |
289 | !SCM_FALSEP (scm_i_mem2number(str, len, 10))) | |
6662998f MV |
290 | { |
291 | scm_lfwrite ("#{", 2, port); | |
292 | weird = 1; | |
293 | } | |
c6b49e89 | 294 | |
6662998f MV |
295 | for (end = pos; end < len; ++end) |
296 | switch (str[end]) | |
297 | { | |
298 | #ifdef BRACKETS_AS_PARENS | |
299 | case '[': | |
300 | case ']': | |
301 | #endif | |
302 | case '(': | |
303 | case ')': | |
304 | case '"': | |
305 | case ';': | |
c6b49e89 | 306 | case '#': |
6662998f MV |
307 | case SCM_WHITE_SPACES: |
308 | case SCM_LINE_INCREMENTORS: | |
309 | weird_handler: | |
310 | if (maybe_weird) | |
311 | { | |
312 | end = mw_pos; | |
313 | maybe_weird = 0; | |
314 | } | |
315 | if (!weird) | |
316 | { | |
317 | scm_lfwrite ("#{", 2, port); | |
318 | weird = 1; | |
319 | } | |
320 | if (pos < end) | |
c6b49e89 | 321 | scm_lfwrite (str + pos, end - pos, port); |
6662998f MV |
322 | { |
323 | char buf[2]; | |
324 | buf[0] = '\\'; | |
325 | buf[1] = str[end]; | |
326 | scm_lfwrite (buf, 2, port); | |
327 | } | |
328 | pos = end + 1; | |
329 | break; | |
330 | case '\\': | |
331 | if (weird) | |
332 | goto weird_handler; | |
333 | if (!maybe_weird) | |
334 | { | |
335 | maybe_weird = 1; | |
336 | mw_pos = pos; | |
337 | } | |
338 | break; | |
6662998f MV |
339 | default: |
340 | break; | |
341 | } | |
342 | if (pos < end) | |
343 | scm_lfwrite (str + pos, end - pos, port); | |
344 | if (weird) | |
345 | scm_lfwrite ("}#", 2, port); | |
346 | } | |
347 | ||
c62fbfe1 | 348 | /* Print generally. Handles both write and display according to PSTATE. |
0f2d19dd | 349 | */ |
8b840115 MD |
350 | SCM_GPROC(s_write, "write", 1, 1, 0, scm_write, g_write); |
351 | SCM_GPROC(s_display, "display", 1, 1, 0, scm_display, g_display); | |
1cc91f1b | 352 | |
0f2d19dd | 353 | void |
1bbd0b84 | 354 | scm_iprin1 (SCM exp, SCM port, scm_print_state *pstate) |
0f2d19dd | 355 | { |
54778cd3 | 356 | switch (SCM_ITAG3 (exp)) |
0f2d19dd | 357 | { |
e34f941a DH |
358 | case scm_tc3_closure: |
359 | case scm_tc3_tc7_1: | |
360 | case scm_tc3_tc7_2: | |
361 | /* These tc3 tags should never occur in an immediate value. They are | |
362 | * only used in cell types of non-immediates, i. e. the value returned | |
363 | * by SCM_CELL_TYPE (exp) can use these tags. | |
364 | */ | |
365 | scm_ipruk ("immediate", exp, port); | |
366 | break; | |
367 | case scm_tc3_int_1: | |
368 | case scm_tc3_int_2: | |
0f2d19dd JB |
369 | scm_intprint (SCM_INUM (exp), 10, port); |
370 | break; | |
e34f941a | 371 | case scm_tc3_imm24: |
7866a09b | 372 | if (SCM_CHARP (exp)) |
0f2d19dd | 373 | { |
e34f941a | 374 | long i = SCM_CHAR (exp); |
5ca6dc39 | 375 | |
b7f3516f TT |
376 | if (SCM_WRITINGP (pstate)) |
377 | { | |
378 | scm_puts ("#\\", port); | |
379 | if ((i >= 0) && (i <= ' ') && scm_charnames[i]) | |
380 | scm_puts (scm_charnames[i], port); | |
57b74422 GH |
381 | #ifndef EBCDIC |
382 | else if (i == '\177') | |
383 | scm_puts (scm_charnames[scm_n_charnames - 1], port); | |
384 | #endif | |
b7f3516f TT |
385 | else if (i < 0 || i > '\177') |
386 | scm_intprint (i, 8, port); | |
387 | else | |
388 | scm_putc (i, port); | |
389 | } | |
390 | else | |
391 | scm_putc (i, port); | |
0f2d19dd | 392 | } |
a51ea417 | 393 | else if (SCM_IFLAGP (exp) |
e17d318f DH |
394 | && ((size_t) SCM_IFLAGNUM (exp) < (sizeof iflagnames / sizeof (char *)))) |
395 | { | |
396 | scm_puts (iflagnames [SCM_IFLAGNUM (exp)], port); | |
397 | } | |
7e6e6b37 | 398 | else if (SCM_ISYMP (exp)) |
e17d318f | 399 | { |
7e6e6b37 | 400 | scm_i_print_isym (exp, port); |
e17d318f | 401 | } |
0f2d19dd JB |
402 | else if (SCM_ILOCP (exp)) |
403 | { | |
7e6e6b37 | 404 | scm_i_print_iloc (exp, port); |
0f2d19dd JB |
405 | } |
406 | else | |
e34f941a DH |
407 | { |
408 | /* unknown immediate value */ | |
409 | scm_ipruk ("immediate", exp, port); | |
410 | } | |
0f2d19dd | 411 | break; |
e34f941a | 412 | case scm_tc3_cons: |
0f2d19dd JB |
413 | switch (SCM_TYP7 (exp)) |
414 | { | |
904a077d MV |
415 | case scm_tcs_struct: |
416 | { | |
417 | ENTER_NESTED_DATA (pstate, exp, circref); | |
418 | if (SCM_OBJ_CLASS_FLAGS (exp) & SCM_CLASSF_GOOPS) | |
419 | { | |
420 | SCM pwps, print = pstate->writingp ? g_write : g_display; | |
421 | if (!print) | |
422 | goto print_struct; | |
dfd03fb9 | 423 | pwps = scm_i_port_with_print_state (port, pstate->handle); |
7663c008 | 424 | pstate->revealed = 1; |
904a077d MV |
425 | scm_call_generic_2 (print, exp, pwps); |
426 | } | |
427 | else | |
428 | { | |
429 | print_struct: | |
430 | scm_print_struct (exp, port, pstate); | |
431 | } | |
432 | EXIT_NESTED_DATA (pstate); | |
433 | } | |
434 | break; | |
0f2d19dd JB |
435 | case scm_tcs_cons_imcar: |
436 | case scm_tcs_cons_nimcar: | |
c62fbfe1 MD |
437 | ENTER_NESTED_DATA (pstate, exp, circref); |
438 | scm_iprlist ("(", exp, ')', port, pstate); | |
439 | EXIT_NESTED_DATA (pstate); | |
a51ea417 MD |
440 | break; |
441 | circref: | |
c62fbfe1 | 442 | print_circref (port, pstate, exp); |
0f2d19dd JB |
443 | break; |
444 | case scm_tcs_closures: | |
bb35f315 MV |
445 | if (SCM_FALSEP (scm_procedure_p (SCM_PRINT_CLOSURE)) |
446 | || SCM_FALSEP (scm_printer_apply (SCM_PRINT_CLOSURE, | |
77c25af7 | 447 | exp, port, pstate))) |
726d810a DH |
448 | { |
449 | SCM formals = SCM_CLOSURE_FORMALS (exp); | |
450 | scm_puts ("#<procedure", port); | |
451 | scm_putc (' ', port); | |
452 | scm_iprin1 (scm_procedure_name (exp), port, pstate); | |
453 | scm_putc (' ', port); | |
454 | if (SCM_PRINT_SOURCE_P) | |
455 | { | |
456 | SCM env = SCM_ENV (exp); | |
457 | SCM xenv = SCM_EXTEND_ENV (formals, SCM_EOL, env); | |
9fcf3cbb | 458 | SCM src = scm_i_unmemocopy_body (SCM_CODE (exp), xenv); |
726d810a DH |
459 | ENTER_NESTED_DATA (pstate, exp, circref); |
460 | scm_iprin1 (src, port, pstate); | |
461 | EXIT_NESTED_DATA (pstate); | |
462 | } | |
463 | else | |
464 | scm_iprin1 (formals, port, pstate); | |
b7f3516f | 465 | scm_putc ('>', port); |
726d810a | 466 | } |
0f2d19dd | 467 | break; |
534c55a9 DH |
468 | case scm_tc7_number: |
469 | switch SCM_TYP16 (exp) { | |
470 | case scm_tc16_big: | |
471 | scm_bigprint (exp, port, pstate); | |
472 | break; | |
473 | case scm_tc16_real: | |
474 | scm_print_real (exp, port, pstate); | |
475 | break; | |
476 | case scm_tc16_complex: | |
477 | scm_print_complex (exp, port, pstate); | |
478 | break; | |
f92e85f7 MV |
479 | case scm_tc16_fraction: |
480 | scm_i_print_fraction (exp, port, pstate); | |
481 | break; | |
534c55a9 DH |
482 | } |
483 | break; | |
0f2d19dd | 484 | case scm_tc7_string: |
c62fbfe1 | 485 | if (SCM_WRITINGP (pstate)) |
0f2d19dd | 486 | { |
1be6b49c | 487 | size_t i; |
5ca6dc39 | 488 | |
b7f3516f | 489 | scm_putc ('"', port); |
d1ca2c64 | 490 | for (i = 0; i < SCM_STRING_LENGTH (exp); ++i) |
fea8e142 MV |
491 | { |
492 | unsigned char ch = SCM_STRING_CHARS (exp)[i]; | |
493 | if ((ch < 32 && ch != '\n') || (127 <= ch && ch < 148)) | |
494 | { | |
495 | static char const hex[]="0123456789abcdef"; | |
496 | scm_putc ('\\', port); | |
497 | scm_putc ('x', port); | |
498 | scm_putc (hex [ch / 16], port); | |
499 | scm_putc (hex [ch % 16], port); | |
500 | } | |
501 | else | |
502 | { | |
503 | if (ch == '"' || ch == '\\') | |
504 | scm_putc ('\\', port); | |
505 | scm_putc (ch, port); | |
506 | } | |
507 | } | |
b7f3516f | 508 | scm_putc ('"', port); |
0f2d19dd JB |
509 | } |
510 | else | |
fea8e142 MV |
511 | scm_lfwrite (SCM_STRING_CHARS (exp), SCM_STRING_LENGTH (exp), |
512 | port); | |
0f2d19dd | 513 | break; |
28b06554 | 514 | case scm_tc7_symbol: |
9ff28a13 MV |
515 | if (SCM_SYMBOL_INTERNED_P (exp)) |
516 | { | |
517 | scm_print_symbol_name (SCM_SYMBOL_CHARS (exp), | |
518 | SCM_SYMBOL_LENGTH (exp), | |
519 | port); | |
520 | scm_remember_upto_here_1 (exp); | |
521 | } | |
522 | else | |
523 | { | |
524 | scm_puts ("#<uninterned-symbol ", port); | |
525 | scm_print_symbol_name (SCM_SYMBOL_CHARS (exp), | |
526 | SCM_SYMBOL_LENGTH (exp), | |
527 | port); | |
528 | scm_putc (' ', port); | |
529 | scm_intprint ((long)exp, 16, port); | |
530 | scm_putc ('>', port); | |
531 | } | |
6662998f | 532 | break; |
e5aca4b5 MV |
533 | case scm_tc7_variable: |
534 | scm_i_variable_print (exp, port, pstate); | |
535 | break; | |
0f2d19dd | 536 | case scm_tc7_wvect: |
c62fbfe1 | 537 | ENTER_NESTED_DATA (pstate, exp, circref); |
0f2d19dd | 538 | if (SCM_IS_WHVEC (exp)) |
b7f3516f | 539 | scm_puts ("#wh(", port); |
0f2d19dd | 540 | else |
b7f3516f | 541 | scm_puts ("#w(", port); |
0f2d19dd JB |
542 | goto common_vector_printer; |
543 | ||
544 | case scm_tc7_vector: | |
c62fbfe1 | 545 | ENTER_NESTED_DATA (pstate, exp, circref); |
b7f3516f | 546 | scm_puts ("#(", port); |
0f2d19dd | 547 | common_vector_printer: |
9fbaf27c | 548 | { |
c014a02e ML |
549 | register long i; |
550 | long last = SCM_VECTOR_LENGTH (exp) - 1; | |
9fbaf27c | 551 | int cutp = 0; |
b17004b8 | 552 | if (pstate->fancyp && SCM_VECTOR_LENGTH (exp) > pstate->length) |
9fbaf27c MD |
553 | { |
554 | last = pstate->length - 1; | |
555 | cutp = 1; | |
556 | } | |
557 | for (i = 0; i < last; ++i) | |
558 | { | |
559 | /* CHECK_INTS; */ | |
560 | scm_iprin1 (SCM_VELTS (exp)[i], port, pstate); | |
b7f3516f | 561 | scm_putc (' ', port); |
9fbaf27c MD |
562 | } |
563 | if (i == last) | |
564 | { | |
565 | /* CHECK_INTS; */ | |
566 | scm_iprin1 (SCM_VELTS (exp)[i], port, pstate); | |
567 | } | |
568 | if (cutp) | |
b7f3516f TT |
569 | scm_puts (" ...", port); |
570 | scm_putc (')', port); | |
9fbaf27c | 571 | } |
c62fbfe1 | 572 | EXIT_NESTED_DATA (pstate); |
0f2d19dd | 573 | break; |
5f4df973 | 574 | #if SCM_HAVE_ARRAYS |
0f2d19dd JB |
575 | case scm_tc7_bvect: |
576 | case scm_tc7_byvect: | |
577 | case scm_tc7_svect: | |
578 | case scm_tc7_ivect: | |
579 | case scm_tc7_uvect: | |
580 | case scm_tc7_fvect: | |
581 | case scm_tc7_dvect: | |
582 | case scm_tc7_cvect: | |
ffbda747 | 583 | #if SCM_SIZEOF_LONG_LONG != 0 |
0f2d19dd JB |
584 | case scm_tc7_llvect: |
585 | #endif | |
c62fbfe1 | 586 | scm_raprin1 (exp, port, pstate); |
0f2d19dd | 587 | break; |
afe5177e | 588 | #endif |
0f2d19dd | 589 | case scm_tcs_subrs: |
f76af603 | 590 | scm_puts (SCM_SUBR_GENERIC (exp) |
9de33deb MD |
591 | ? "#<primitive-generic " |
592 | : "#<primitive-procedure ", | |
593 | port); | |
a002f1a2 | 594 | scm_puts (SCM_SYMBOL_CHARS (SCM_SNAME (exp)), port); |
b7f3516f | 595 | scm_putc ('>', port); |
0f2d19dd JB |
596 | break; |
597 | #ifdef CCLO | |
598 | case scm_tc7_cclo: | |
56977059 MD |
599 | { |
600 | SCM proc = SCM_CCLO_SUBR (exp); | |
54778cd3 | 601 | if (SCM_EQ_P (proc, scm_f_gsubr_apply)) |
56977059 MD |
602 | { |
603 | /* Print gsubrs as primitives */ | |
c180dfd3 | 604 | SCM name = scm_procedure_name (exp); |
56977059 | 605 | scm_puts ("#<primitive-procedure", port); |
d5cf5324 | 606 | if (!SCM_FALSEP (name)) |
56977059 MD |
607 | { |
608 | scm_putc (' ', port); | |
a002f1a2 | 609 | scm_puts (SCM_SYMBOL_CHARS (name), port); |
56977059 MD |
610 | } |
611 | } | |
612 | else | |
613 | { | |
614 | scm_puts ("#<compiled-closure ", port); | |
615 | scm_iprin1 (proc, port, pstate); | |
616 | } | |
617 | scm_putc ('>', port); | |
618 | } | |
0f2d19dd JB |
619 | break; |
620 | #endif | |
c180dfd3 MD |
621 | case scm_tc7_pws: |
622 | scm_puts ("#<procedure-with-setter", port); | |
623 | { | |
624 | SCM name = scm_procedure_name (exp); | |
d5cf5324 | 625 | if (!SCM_FALSEP (name)) |
c180dfd3 MD |
626 | { |
627 | scm_putc (' ', port); | |
b24b5e13 | 628 | scm_display (name, port); |
c180dfd3 MD |
629 | } |
630 | } | |
631 | scm_putc ('>', port); | |
632 | break; | |
0f2d19dd | 633 | case scm_tc7_port: |
5ca6dc39 JB |
634 | { |
635 | register long i = SCM_PTOBNUM (exp); | |
636 | if (i < scm_numptob | |
637 | && scm_ptobs[i].print | |
638 | && (scm_ptobs[i].print) (exp, port, pstate)) | |
a51ea417 | 639 | break; |
5ca6dc39 JB |
640 | goto punk; |
641 | } | |
642 | case scm_tc7_smob: | |
7a7f7c53 DH |
643 | ENTER_NESTED_DATA (pstate, exp, circref); |
644 | SCM_SMOB_DESCRIPTOR (exp).print (exp, port, pstate); | |
645 | EXIT_NESTED_DATA (pstate); | |
646 | break; | |
0f2d19dd | 647 | default: |
a51ea417 MD |
648 | punk: |
649 | scm_ipruk ("type", exp, port); | |
0f2d19dd JB |
650 | } |
651 | } | |
652 | } | |
653 | ||
c62fbfe1 MD |
654 | /* Print states are necessary for circular reference safe printing. |
655 | * They are also expensive to allocate. Therefore print states are | |
656 | * kept in a pool so that they can be reused. | |
657 | */ | |
1cc91f1b | 658 | |
bb35f315 MV |
659 | /* The PORT argument can also be a print-state/port pair, which will |
660 | * then be used instead of allocating a new print state. This is | |
661 | * useful for continuing a chain of print calls from Scheme. */ | |
662 | ||
a51ea417 | 663 | void |
1bbd0b84 | 664 | scm_prin1 (SCM exp, SCM port, int writingp) |
a51ea417 | 665 | { |
c4f37e80 MV |
666 | SCM handle = SCM_BOOL_F; /* Will GC protect the handle whilst unlinked */ |
667 | SCM pstate_scm; | |
c62fbfe1 | 668 | scm_print_state *pstate; |
15635be5 | 669 | int old_writingp; |
c62fbfe1 | 670 | |
bb35f315 MV |
671 | /* If PORT is a print-state/port pair, use that. Else create a new |
672 | print-state. */ | |
c4f37e80 | 673 | |
0c95b57d | 674 | if (SCM_PORT_WITH_PS_P (port)) |
bb35f315 | 675 | { |
52235e71 MD |
676 | pstate_scm = SCM_PORT_WITH_PS_PS (port); |
677 | port = SCM_PORT_WITH_PS_PORT (port); | |
bb35f315 MV |
678 | } |
679 | else | |
c62fbfe1 | 680 | { |
c4f37e80 | 681 | /* First try to allocate a print state from the pool */ |
dfd03fb9 | 682 | scm_i_plugin_mutex_lock (&print_state_mutex); |
d5cf5324 | 683 | if (!SCM_NULLP (print_state_pool)) |
c4f37e80 | 684 | { |
d5cf5324 DH |
685 | handle = print_state_pool; |
686 | print_state_pool = SCM_CDR (print_state_pool); | |
c4f37e80 | 687 | } |
dfd03fb9 | 688 | scm_i_plugin_mutex_unlock (&print_state_mutex); |
54778cd3 | 689 | if (SCM_FALSEP (handle)) |
d5cf5324 | 690 | handle = scm_list_1 (make_print_state ()); |
c4f37e80 | 691 | pstate_scm = SCM_CAR (handle); |
c62fbfe1 | 692 | } |
c62fbfe1 | 693 | |
c4f37e80 | 694 | pstate = SCM_PRINT_STATE (pstate_scm); |
15635be5 | 695 | old_writingp = pstate->writingp; |
c62fbfe1 MD |
696 | pstate->writingp = writingp; |
697 | scm_iprin1 (exp, port, pstate); | |
15635be5 | 698 | pstate->writingp = old_writingp; |
c62fbfe1 | 699 | |
bb35f315 MV |
700 | /* Return print state to pool if it has been created above and |
701 | hasn't escaped to Scheme. */ | |
702 | ||
54778cd3 | 703 | if (!SCM_FALSEP (handle) && !pstate->revealed) |
c4f37e80 | 704 | { |
dfd03fb9 | 705 | scm_i_plugin_mutex_lock (&print_state_mutex); |
d5cf5324 DH |
706 | SCM_SETCDR (handle, print_state_pool); |
707 | print_state_pool = handle; | |
dfd03fb9 | 708 | scm_i_plugin_mutex_unlock (&print_state_mutex); |
c4f37e80 | 709 | } |
a51ea417 MD |
710 | } |
711 | ||
0f2d19dd JB |
712 | |
713 | /* Print an integer. | |
714 | */ | |
1cc91f1b | 715 | |
0f2d19dd | 716 | void |
1bbd0b84 | 717 | scm_intprint (long n, int radix, SCM port) |
0f2d19dd JB |
718 | { |
719 | char num_buf[SCM_INTBUFLEN]; | |
b7f3516f | 720 | scm_lfwrite (num_buf, scm_iint2str (n, radix, num_buf), port); |
0f2d19dd JB |
721 | } |
722 | ||
723 | /* Print an object of unrecognized type. | |
724 | */ | |
1cc91f1b | 725 | |
0f2d19dd | 726 | void |
1bbd0b84 | 727 | scm_ipruk (char *hdr, SCM ptr, SCM port) |
0f2d19dd | 728 | { |
b7f3516f TT |
729 | scm_puts ("#<unknown-", port); |
730 | scm_puts (hdr, port); | |
c8a1bdc4 | 731 | if (scm_in_heap_p (ptr)) |
0f2d19dd | 732 | { |
b7f3516f | 733 | scm_puts (" (0x", port); |
54778cd3 | 734 | scm_intprint (SCM_CELL_WORD_0 (ptr), 16, port); |
b7f3516f | 735 | scm_puts (" . 0x", port); |
54778cd3 | 736 | scm_intprint (SCM_CELL_WORD_1 (ptr), 16, port); |
b7f3516f | 737 | scm_puts (") @", port); |
0f2d19dd | 738 | } |
b7f3516f | 739 | scm_puts (" 0x", port); |
54778cd3 | 740 | scm_intprint (SCM_UNPACK (ptr), 16, port); |
b7f3516f | 741 | scm_putc ('>', port); |
0f2d19dd JB |
742 | } |
743 | ||
1cc91f1b | 744 | |
904a077d | 745 | /* Print a list. |
22a52da1 | 746 | */ |
0f2d19dd | 747 | void |
34d19ef6 | 748 | scm_iprlist (char *hdr, SCM exp, int tlr, SCM port, scm_print_state *pstate) |
0f2d19dd | 749 | { |
c62fbfe1 | 750 | register SCM hare, tortoise; |
c014a02e | 751 | long floor = pstate->top - 2; |
b7f3516f | 752 | scm_puts (hdr, port); |
0f2d19dd | 753 | /* CHECK_INTS; */ |
c62fbfe1 MD |
754 | if (pstate->fancyp) |
755 | goto fancy_printing; | |
756 | ||
757 | /* Run a hare and tortoise so that total time complexity will be | |
758 | O(depth * N) instead of O(N^2). */ | |
759 | hare = SCM_CDR (exp); | |
760 | tortoise = exp; | |
904a077d | 761 | while (SCM_CONSP (hare)) |
c62fbfe1 | 762 | { |
54778cd3 | 763 | if (SCM_EQ_P (hare, tortoise)) |
c62fbfe1 MD |
764 | goto fancy_printing; |
765 | hare = SCM_CDR (hare); | |
d5cf5324 | 766 | if (!SCM_CONSP (hare)) |
c62fbfe1 MD |
767 | break; |
768 | hare = SCM_CDR (hare); | |
769 | tortoise = SCM_CDR (tortoise); | |
770 | } | |
771 | ||
772 | /* No cdr cycles intrinsic to this list */ | |
773 | scm_iprin1 (SCM_CAR (exp), port, pstate); | |
904a077d | 774 | for (exp = SCM_CDR (exp); SCM_CONSP (exp); exp = SCM_CDR (exp)) |
0f2d19dd | 775 | { |
c014a02e | 776 | register long i; |
5ca6dc39 | 777 | |
c62fbfe1 | 778 | for (i = floor; i >= 0; --i) |
230d095f | 779 | if (SCM_EQ_P (pstate->ref_stack[i], exp)) |
c62fbfe1 MD |
780 | goto circref; |
781 | PUSH_REF (pstate, exp); | |
b7f3516f | 782 | scm_putc (' ', port); |
0f2d19dd | 783 | /* CHECK_INTS; */ |
c62fbfe1 | 784 | scm_iprin1 (SCM_CAR (exp), port, pstate); |
0f2d19dd | 785 | } |
c96d76b8 | 786 | if (!SCM_NULL_OR_NIL_P (exp)) |
0f2d19dd | 787 | { |
b7f3516f | 788 | scm_puts (" . ", port); |
c62fbfe1 | 789 | scm_iprin1 (exp, port, pstate); |
0f2d19dd | 790 | } |
c62fbfe1 | 791 | |
a51ea417 | 792 | end: |
b7f3516f | 793 | scm_putc (tlr, port); |
c62fbfe1 | 794 | pstate->top = floor + 2; |
a51ea417 | 795 | return; |
c62fbfe1 MD |
796 | |
797 | fancy_printing: | |
798 | { | |
c014a02e | 799 | long n = pstate->length; |
c62fbfe1 MD |
800 | |
801 | scm_iprin1 (SCM_CAR (exp), port, pstate); | |
802 | exp = SCM_CDR (exp); --n; | |
904a077d | 803 | for (; SCM_CONSP (exp); exp = SCM_CDR (exp)) |
c62fbfe1 | 804 | { |
c014a02e | 805 | register unsigned long i; |
5ca6dc39 | 806 | |
c62fbfe1 | 807 | for (i = 0; i < pstate->top; ++i) |
230d095f | 808 | if (SCM_EQ_P (pstate->ref_stack[i], exp)) |
c62fbfe1 MD |
809 | goto fancy_circref; |
810 | if (pstate->fancyp) | |
811 | { | |
812 | if (n == 0) | |
813 | { | |
b7f3516f | 814 | scm_puts (" ...", port); |
c62fbfe1 MD |
815 | goto skip_tail; |
816 | } | |
817 | else | |
818 | --n; | |
819 | } | |
820 | PUSH_REF(pstate, exp); | |
821 | ++pstate->list_offset; | |
b7f3516f | 822 | scm_putc (' ', port); |
c62fbfe1 MD |
823 | /* CHECK_INTS; */ |
824 | scm_iprin1 (SCM_CAR (exp), port, pstate); | |
825 | } | |
826 | } | |
c96d76b8 | 827 | if (!SCM_NULL_OR_NIL_P (exp)) |
c62fbfe1 | 828 | { |
b7f3516f | 829 | scm_puts (" . ", port); |
c62fbfe1 MD |
830 | scm_iprin1 (exp, port, pstate); |
831 | } | |
832 | skip_tail: | |
833 | pstate->list_offset -= pstate->top - floor - 2; | |
a51ea417 | 834 | goto end; |
a51ea417 | 835 | |
c62fbfe1 MD |
836 | fancy_circref: |
837 | pstate->list_offset -= pstate->top - floor - 2; | |
838 | ||
839 | circref: | |
b7f3516f | 840 | scm_puts (" . ", port); |
c62fbfe1 MD |
841 | print_circref (port, pstate, exp); |
842 | goto end; | |
0f2d19dd JB |
843 | } |
844 | ||
845 | \f | |
846 | ||
bb35f315 MV |
847 | int |
848 | scm_valid_oport_value_p (SCM val) | |
849 | { | |
368cf54d GB |
850 | return (SCM_OPOUTPORTP (val) |
851 | || (SCM_PORT_WITH_PS_P (val) | |
852 | && SCM_OPOUTPORTP (SCM_PORT_WITH_PS_PORT (val)))); | |
bb35f315 MV |
853 | } |
854 | ||
8b840115 | 855 | /* SCM_GPROC(s_write, "write", 1, 1, 0, scm_write, g_write); */ |
1cc91f1b | 856 | |
0f2d19dd | 857 | SCM |
1bbd0b84 | 858 | scm_write (SCM obj, SCM port) |
0f2d19dd JB |
859 | { |
860 | if (SCM_UNBNDP (port)) | |
861 | port = scm_cur_outp; | |
3eb7e6ee JB |
862 | |
863 | SCM_ASSERT (scm_valid_oport_value_p (port), port, SCM_ARG2, s_write); | |
bb35f315 | 864 | |
a51ea417 | 865 | scm_prin1 (obj, port, 1); |
0f2d19dd JB |
866 | #ifdef HAVE_PIPE |
867 | # ifdef EPIPE | |
868 | if (EPIPE == errno) | |
869 | scm_close_port (port); | |
870 | # endif | |
871 | #endif | |
872 | return SCM_UNSPECIFIED; | |
873 | } | |
874 | ||
875 | ||
8b840115 | 876 | /* SCM_GPROC(s_display, "display", 1, 1, 0, scm_display, g_display); */ |
1cc91f1b | 877 | |
0f2d19dd | 878 | SCM |
1bbd0b84 | 879 | scm_display (SCM obj, SCM port) |
0f2d19dd JB |
880 | { |
881 | if (SCM_UNBNDP (port)) | |
882 | port = scm_cur_outp; | |
3eb7e6ee JB |
883 | |
884 | SCM_ASSERT (scm_valid_oport_value_p (port), port, SCM_ARG2, s_display); | |
bb35f315 | 885 | |
a51ea417 | 886 | scm_prin1 (obj, port, 0); |
0f2d19dd JB |
887 | #ifdef HAVE_PIPE |
888 | # ifdef EPIPE | |
889 | if (EPIPE == errno) | |
890 | scm_close_port (port); | |
891 | # endif | |
892 | #endif | |
893 | return SCM_UNSPECIFIED; | |
894 | } | |
895 | ||
70d63753 GB |
896 | |
897 | SCM_DEFINE (scm_simple_format, "simple-format", 2, 0, 1, | |
898 | (SCM destination, SCM message, SCM args), | |
eca65e90 MG |
899 | "Write @var{message} to @var{destination}, defaulting to\n" |
900 | "the current output port.\n" | |
901 | "@var{message} can contain @code{~A} (was @code{%s}) and\n" | |
902 | "@code{~S} (was @code{%S}) escapes. When printed,\n" | |
903 | "the escapes are replaced with corresponding members of\n" | |
904 | "@var{ARGS}:\n" | |
905 | "@code{~A} formats using @code{display} and @code{~S} formats\n" | |
906 | "using @code{write}.\n" | |
907 | "If @var{destination} is @code{#t}, then use the current output\n" | |
908 | "port, if @var{destination} is @code{#f}, then return a string\n" | |
909 | "containing the formatted text. Does not add a trailing newline.") | |
70d63753 GB |
910 | #define FUNC_NAME s_scm_simple_format |
911 | { | |
dfd03fb9 | 912 | SCM port, answer = SCM_UNSPECIFIED; |
70d63753 GB |
913 | int fReturnString = 0; |
914 | int writingp; | |
915 | char *start; | |
b24b5e13 | 916 | char *end; |
70d63753 GB |
917 | char *p; |
918 | ||
daba1a71 MD |
919 | if (SCM_EQ_P (destination, SCM_BOOL_T)) |
920 | { | |
dfd03fb9 | 921 | destination = port = scm_cur_outp; |
daba1a71 MD |
922 | } |
923 | else if (SCM_FALSEP (destination)) | |
924 | { | |
925 | fReturnString = 1; | |
dfd03fb9 MD |
926 | port = scm_mkstrport (SCM_INUM0, |
927 | scm_make_string (SCM_INUM0, SCM_UNDEFINED), | |
928 | SCM_OPN | SCM_WRTNG, | |
929 | FUNC_NAME); | |
930 | destination = port; | |
daba1a71 MD |
931 | } |
932 | else | |
933 | { | |
934 | SCM_VALIDATE_OPORT_VALUE (1, destination); | |
dfd03fb9 | 935 | port = SCM_COERCE_OUTPORT (destination); |
daba1a71 MD |
936 | } |
937 | SCM_VALIDATE_STRING (2, message); | |
af45e3b0 | 938 | SCM_VALIDATE_REST_ARGUMENT (args); |
70d63753 | 939 | |
34f0f2b8 | 940 | start = SCM_STRING_CHARS (message); |
b24b5e13 DH |
941 | end = start + SCM_STRING_LENGTH (message); |
942 | for (p = start; p != end; ++p) | |
70d63753 GB |
943 | if (*p == '~') |
944 | { | |
b24b5e13 | 945 | if (++p == end) |
6662998f MV |
946 | break; |
947 | ||
948 | switch (*p) | |
949 | { | |
950 | case 'A': case 'a': | |
951 | writingp = 0; | |
952 | break; | |
953 | case 'S': case 's': | |
954 | writingp = 1; | |
955 | break; | |
956 | case '~': | |
dfd03fb9 | 957 | scm_lfwrite (start, p - start, port); |
6662998f MV |
958 | start = p + 1; |
959 | continue; | |
960 | case '%': | |
dfd03fb9 MD |
961 | scm_lfwrite (start, p - start - 1, port); |
962 | scm_newline (port); | |
6662998f MV |
963 | start = p + 1; |
964 | continue; | |
965 | default: | |
1afff620 KN |
966 | SCM_MISC_ERROR ("FORMAT: Unsupported format option ~~~A - use (ice-9 format) instead", |
967 | scm_list_1 (SCM_MAKE_CHAR (*p))); | |
6662998f MV |
968 | |
969 | } | |
70d63753 | 970 | |
6662998f MV |
971 | |
972 | if (!SCM_CONSP (args)) | |
1afff620 KN |
973 | SCM_MISC_ERROR ("FORMAT: Missing argument for ~~~A", |
974 | scm_list_1 (SCM_MAKE_CHAR (*p))); | |
6662998f | 975 | |
dfd03fb9 MD |
976 | scm_lfwrite (start, p - start - 1, port); |
977 | /* we pass destination here */ | |
70d63753 GB |
978 | scm_prin1 (SCM_CAR (args), destination, writingp); |
979 | args = SCM_CDR (args); | |
980 | start = p + 1; | |
981 | } | |
6662998f | 982 | |
dfd03fb9 | 983 | scm_lfwrite (start, p - start, port); |
d5cf5324 | 984 | if (!SCM_EQ_P (args, SCM_EOL)) |
1afff620 KN |
985 | SCM_MISC_ERROR ("FORMAT: ~A superfluous arguments", |
986 | scm_list_1 (scm_length (args))); | |
70d63753 GB |
987 | |
988 | if (fReturnString) | |
989 | answer = scm_strport_to_string (destination); | |
990 | ||
daba1a71 | 991 | return scm_return_first (answer, message); |
70d63753 GB |
992 | } |
993 | #undef FUNC_NAME | |
994 | ||
995 | ||
3b3b36dd | 996 | SCM_DEFINE (scm_newline, "newline", 0, 1, 0, |
b450f070 | 997 | (SCM port), |
8f85c0c6 NJ |
998 | "Send a newline to @var{port}.\n" |
999 | "If @var{port} is omitted, send to the current output port.") | |
1bbd0b84 | 1000 | #define FUNC_NAME s_scm_newline |
0f2d19dd JB |
1001 | { |
1002 | if (SCM_UNBNDP (port)) | |
bb35f315 | 1003 | port = scm_cur_outp; |
3eb7e6ee | 1004 | |
34d19ef6 | 1005 | SCM_VALIDATE_OPORT_VALUE (1, port); |
bb35f315 | 1006 | |
0ef4ae82 | 1007 | scm_putc ('\n', SCM_COERCE_OUTPORT (port)); |
0f2d19dd JB |
1008 | return SCM_UNSPECIFIED; |
1009 | } | |
1bbd0b84 | 1010 | #undef FUNC_NAME |
0f2d19dd | 1011 | |
3b3b36dd | 1012 | SCM_DEFINE (scm_write_char, "write-char", 1, 1, 0, |
b450f070 | 1013 | (SCM chr, SCM port), |
eca65e90 | 1014 | "Send character @var{chr} to @var{port}.") |
1bbd0b84 | 1015 | #define FUNC_NAME s_scm_write_char |
0f2d19dd JB |
1016 | { |
1017 | if (SCM_UNBNDP (port)) | |
bb35f315 | 1018 | port = scm_cur_outp; |
3eb7e6ee | 1019 | |
34d19ef6 HWN |
1020 | SCM_VALIDATE_CHAR (1, chr); |
1021 | SCM_VALIDATE_OPORT_VALUE (2, port); | |
bb35f315 | 1022 | |
7866a09b | 1023 | scm_putc ((int) SCM_CHAR (chr), SCM_COERCE_OUTPORT (port)); |
0f2d19dd JB |
1024 | #ifdef HAVE_PIPE |
1025 | # ifdef EPIPE | |
1026 | if (EPIPE == errno) | |
1027 | scm_close_port (port); | |
1028 | # endif | |
1029 | #endif | |
1030 | return SCM_UNSPECIFIED; | |
1031 | } | |
1bbd0b84 | 1032 | #undef FUNC_NAME |
0f2d19dd | 1033 | |
0f2d19dd JB |
1034 | \f |
1035 | ||
bb35f315 | 1036 | /* Call back to Scheme code to do the printing of special objects |
c19bc088 MD |
1037 | * (like structs). SCM_PRINTER_APPLY applies PROC to EXP and a smob |
1038 | * containing PORT and PSTATE. This object can be used as the port for | |
1039 | * display/write etc to continue the current print chain. The REVEALED | |
1040 | * field of PSTATE is set to true to indicate that the print state has | |
1041 | * escaped to Scheme and thus has to be freed by the GC. | |
1042 | */ | |
1043 | ||
92c2555f | 1044 | scm_t_bits scm_tc16_port_with_ps; |
c19bc088 MD |
1045 | |
1046 | /* Print exactly as the port itself would */ | |
1047 | ||
1048 | static int | |
e841c3e0 | 1049 | port_with_ps_print (SCM obj, SCM port, scm_print_state *pstate) |
c19bc088 MD |
1050 | { |
1051 | obj = SCM_PORT_WITH_PS_PORT (obj); | |
1052 | return scm_ptobs[SCM_PTOBNUM (obj)].print (obj, port, pstate); | |
1053 | } | |
c4f37e80 MV |
1054 | |
1055 | SCM | |
1bbd0b84 | 1056 | scm_printer_apply (SCM proc, SCM exp, SCM port, scm_print_state *pstate) |
c4f37e80 | 1057 | { |
bb35f315 | 1058 | pstate->revealed = 1; |
dfd03fb9 MD |
1059 | return scm_call_2 (proc, exp, |
1060 | scm_i_port_with_print_state (port, pstate->handle)); | |
c19bc088 MD |
1061 | } |
1062 | ||
dfd03fb9 | 1063 | SCM_DEFINE (scm_port_with_print_state, "port-with-print-state", 1, 1, 0, |
1bbd0b84 | 1064 | (SCM port, SCM pstate), |
71331188 | 1065 | "Create a new port which behaves like @var{port}, but with an\n" |
dfd03fb9 MD |
1066 | "included print state @var{pstate}. @var{pstate} is optional.\n" |
1067 | "If @var{pstate} isn't supplied and @var{port} already has\n" | |
1068 | "a print state, the old print state is reused.") | |
1bbd0b84 | 1069 | #define FUNC_NAME s_scm_port_with_print_state |
c19bc088 | 1070 | { |
34d19ef6 | 1071 | SCM_VALIDATE_OPORT_VALUE (1, port); |
dfd03fb9 MD |
1072 | if (!SCM_UNBNDP (pstate)) |
1073 | SCM_VALIDATE_PRINTSTATE (2, pstate); | |
1074 | return scm_i_port_with_print_state (port, pstate); | |
c19bc088 | 1075 | } |
1bbd0b84 | 1076 | #undef FUNC_NAME |
c19bc088 | 1077 | |
a1ec6916 | 1078 | SCM_DEFINE (scm_get_print_state, "get-print-state", 1, 0, 0, |
1bbd0b84 | 1079 | (SCM port), |
71331188 MG |
1080 | "Return the print state of the port @var{port}. If @var{port}\n" |
1081 | "has no associated print state, @code{#f} is returned.") | |
1bbd0b84 | 1082 | #define FUNC_NAME s_scm_get_print_state |
c19bc088 | 1083 | { |
368cf54d GB |
1084 | if (SCM_PORT_WITH_PS_P (port)) |
1085 | return SCM_PORT_WITH_PS_PS (port); | |
f5f2dcff | 1086 | if (SCM_OUTPUT_PORT_P (port)) |
368cf54d | 1087 | return SCM_BOOL_F; |
276dd677 | 1088 | SCM_WRONG_TYPE_ARG (1, port); |
c4f37e80 | 1089 | } |
1bbd0b84 | 1090 | #undef FUNC_NAME |
bb35f315 | 1091 | |
c4f37e80 | 1092 | \f |
1cc91f1b | 1093 | |
0f2d19dd JB |
1094 | void |
1095 | scm_init_print () | |
0f2d19dd | 1096 | { |
c19bc088 | 1097 | SCM vtable, layout, type; |
d5cf5324 | 1098 | |
b7ff98dd | 1099 | scm_init_opts (scm_print_options, scm_print_opts, SCM_N_PRINT_OPTIONS); |
d5cf5324 DH |
1100 | |
1101 | scm_gc_register_root (&print_state_pool); | |
1102 | scm_gc_register_root (&scm_print_state_vtable); | |
3ce4544c | 1103 | vtable = scm_make_vtable_vtable (scm_nullstr, SCM_INUM0, SCM_EOL); |
4bfdf158 | 1104 | layout = scm_make_struct_layout (scm_makfrom0str (SCM_PRINT_STATE_LAYOUT)); |
1afff620 | 1105 | type = scm_make_struct (vtable, SCM_INUM0, scm_list_1 (layout)); |
38ae064c | 1106 | scm_set_struct_vtable_name_x (type, scm_str2symbol ("print-state")); |
bb35f315 | 1107 | scm_print_state_vtable = type; |
c4f37e80 | 1108 | |
c19bc088 MD |
1109 | /* Don't want to bind a wrapper class in GOOPS, so pass 0 as arg1. */ |
1110 | scm_tc16_port_with_ps = scm_make_smob_type (0, 0); | |
1111 | scm_set_smob_mark (scm_tc16_port_with_ps, scm_markcdr); | |
e841c3e0 | 1112 | scm_set_smob_print (scm_tc16_port_with_ps, port_with_ps_print); |
c19bc088 | 1113 | |
a0599745 | 1114 | #include "libguile/print.x" |
0f2d19dd | 1115 | } |
89e00824 ML |
1116 | |
1117 | /* | |
1118 | Local Variables: | |
1119 | c-file-style: "gnu" | |
1120 | End: | |
1121 | */ |