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b6fe0bb8 | 1 | /* Various declarations for language-independent pretty-print subroutines. |
23a5b65a | 2 | Copyright (C) 2003-2014 Free Software Foundation, Inc. |
b6fe0bb8 GDR |
3 | Contributed by Gabriel Dos Reis <gdr@integrable-solutions.net> |
4 | ||
5 | This file is part of GCC. | |
6 | ||
7 | GCC is free software; you can redistribute it and/or modify it under | |
8 | the terms of the GNU General Public License as published by the Free | |
9dcd6f09 | 9 | Software Foundation; either version 3, or (at your option) any later |
b6fe0bb8 GDR |
10 | version. |
11 | ||
12 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
13 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
14 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
15 | for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
9dcd6f09 NC |
18 | along with GCC; see the file COPYING3. If not see |
19 | <http://www.gnu.org/licenses/>. */ | |
b6fe0bb8 GDR |
20 | |
21 | #include "config.h" | |
b6fe0bb8 GDR |
22 | #include "system.h" |
23 | #include "coretypes.h" | |
a668adb2 | 24 | #include "intl.h" |
b6fe0bb8 | 25 | #include "pretty-print.h" |
4b84d650 | 26 | #include "diagnostic-color.h" |
a3af5087 | 27 | |
da6ca2b5 GDR |
28 | #include <new> // For placement-new. |
29 | ||
a3af5087 JM |
30 | #if HAVE_ICONV |
31 | #include <iconv.h> | |
32 | #endif | |
b6fe0bb8 | 33 | |
da6ca2b5 GDR |
34 | // Default construct an output buffer. |
35 | ||
36 | output_buffer::output_buffer () | |
37 | : formatted_obstack (), | |
38 | chunk_obstack (), | |
39 | obstack (&formatted_obstack), | |
40 | cur_chunk_array (), | |
41 | stream (stderr), | |
42 | line_length (), | |
43 | digit_buffer () | |
44 | { | |
45 | obstack_init (&formatted_obstack); | |
46 | obstack_init (&chunk_obstack); | |
47 | } | |
48 | ||
025311c4 GDR |
49 | // Release resources owned by an output buffer at the end of lifetime. |
50 | ||
51 | output_buffer::~output_buffer () | |
52 | { | |
65f5c720 RB |
53 | obstack_free (&chunk_obstack, NULL); |
54 | obstack_free (&formatted_obstack, NULL); | |
025311c4 GDR |
55 | } |
56 | ||
b6fe0bb8 GDR |
57 | /* A pointer to the formatted diagnostic message. */ |
58 | #define pp_formatted_text_data(PP) \ | |
025311c4 | 59 | ((const char *) obstack_base (pp_buffer (PP)->obstack)) |
b6fe0bb8 GDR |
60 | |
61 | /* Format an integer given by va_arg (ARG, type-specifier T) where | |
62 | type-specifier is a precision modifier as indicated by PREC. F is | |
63 | a string used to construct the appropriate format-specifier. */ | |
64 | #define pp_integer_with_precision(PP, ARG, PREC, T, F) \ | |
65 | do \ | |
66 | switch (PREC) \ | |
67 | { \ | |
68 | case 0: \ | |
69 | pp_scalar (PP, "%" F, va_arg (ARG, T)); \ | |
70 | break; \ | |
71 | \ | |
72 | case 1: \ | |
73 | pp_scalar (PP, "%l" F, va_arg (ARG, long T)); \ | |
74 | break; \ | |
75 | \ | |
76 | case 2: \ | |
2a157700 | 77 | pp_scalar (PP, "%" HOST_LONG_LONG_FORMAT F, va_arg (ARG, long long T)); \ |
b6fe0bb8 GDR |
78 | break; \ |
79 | \ | |
80 | default: \ | |
81 | break; \ | |
82 | } \ | |
83 | while (0) | |
84 | ||
85 | ||
86 | /* Subroutine of pp_set_maximum_length. Set up PRETTY-PRINTER's | |
87 | internal maximum characters per line. */ | |
88 | static void | |
89 | pp_set_real_maximum_length (pretty_printer *pp) | |
90 | { | |
91 | /* If we're told not to wrap lines then do the obvious thing. In case | |
92 | we'll emit prefix only once per message, it is appropriate | |
93 | not to increase unnecessarily the line-length cut-off. */ | |
94 | if (!pp_is_wrapping_line (pp) | |
95 | || pp_prefixing_rule (pp) == DIAGNOSTICS_SHOW_PREFIX_ONCE | |
96 | || pp_prefixing_rule (pp) == DIAGNOSTICS_SHOW_PREFIX_NEVER) | |
97 | pp->maximum_length = pp_line_cutoff (pp); | |
98 | else | |
99 | { | |
100 | int prefix_length = pp->prefix ? strlen (pp->prefix) : 0; | |
101 | /* If the prefix is ridiculously too long, output at least | |
102 | 32 characters. */ | |
103 | if (pp_line_cutoff (pp) - prefix_length < 32) | |
104 | pp->maximum_length = pp_line_cutoff (pp) + 32; | |
105 | else | |
106 | pp->maximum_length = pp_line_cutoff (pp); | |
107 | } | |
108 | } | |
109 | ||
110 | /* Clear PRETTY-PRINTER's output state. */ | |
111 | static inline void | |
112 | pp_clear_state (pretty_printer *pp) | |
113 | { | |
114 | pp->emitted_prefix = false; | |
115 | pp_indentation (pp) = 0; | |
116 | } | |
117 | ||
b6fe0bb8 | 118 | /* Flush the formatted text of PRETTY-PRINTER onto the attached stream. */ |
6de9cd9a | 119 | void |
b6fe0bb8 GDR |
120 | pp_write_text_to_stream (pretty_printer *pp) |
121 | { | |
122 | const char *text = pp_formatted_text (pp); | |
025311c4 | 123 | fputs (text, pp_buffer (pp)->stream); |
b6fe0bb8 GDR |
124 | pp_clear_output_area (pp); |
125 | } | |
126 | ||
7eba871a SB |
127 | /* As pp_write_text_to_stream, but for GraphViz label output. |
128 | ||
129 | Flush the formatted text of pretty-printer PP onto the attached stream. | |
130 | Replace characters in PPF that have special meaning in a GraphViz .dot | |
131 | file. | |
132 | ||
133 | This routine is not very fast, but it doesn't have to be as this is only | |
134 | be used by routines dumping intermediate representations in graph form. */ | |
135 | ||
136 | void | |
137 | pp_write_text_as_dot_label_to_stream (pretty_printer *pp, bool for_record) | |
138 | { | |
139 | const char *text = pp_formatted_text (pp); | |
140 | const char *p = text; | |
025311c4 | 141 | FILE *fp = pp_buffer (pp)->stream; |
7eba871a SB |
142 | |
143 | while (*p) | |
144 | { | |
145 | switch (*p) | |
146 | { | |
147 | /* Print newlines as a left-aligned newline. */ | |
148 | case '\n': | |
149 | fputs ("\\l\\\n", fp); | |
150 | break; | |
151 | ||
152 | /* A pipe is only special for record-shape nodes. */ | |
153 | case '|': | |
154 | if (for_record) | |
155 | fputc ('\\', fp); | |
156 | fputc (*p, fp); | |
157 | break; | |
158 | ||
159 | /* The following characters always have to be escaped | |
160 | for use in labels. */ | |
161 | case '{': | |
162 | case '}': | |
163 | case '<': | |
164 | case '>': | |
165 | case '"': | |
166 | case ' ': | |
167 | fputc ('\\', fp); | |
168 | /* fall through */ | |
169 | default: | |
170 | fputc (*p, fp); | |
171 | break; | |
172 | } | |
173 | p++; | |
174 | } | |
175 | ||
176 | pp_clear_output_area (pp); | |
177 | } | |
178 | ||
b6fe0bb8 GDR |
179 | /* Wrap a text delimited by START and END into PRETTY-PRINTER. */ |
180 | static void | |
181 | pp_wrap_text (pretty_printer *pp, const char *start, const char *end) | |
182 | { | |
183 | bool wrapping_line = pp_is_wrapping_line (pp); | |
184 | ||
185 | while (start != end) | |
186 | { | |
187 | /* Dump anything bordered by whitespaces. */ | |
188 | { | |
189 | const char *p = start; | |
190 | while (p != end && !ISBLANK (*p) && *p != '\n') | |
191 | ++p; | |
192 | if (wrapping_line | |
193 | && p - start >= pp_remaining_character_count_for_line (pp)) | |
194 | pp_newline (pp); | |
195 | pp_append_text (pp, start, p); | |
196 | start = p; | |
197 | } | |
198 | ||
199 | if (start != end && ISBLANK (*start)) | |
200 | { | |
201 | pp_space (pp); | |
202 | ++start; | |
203 | } | |
204 | if (start != end && *start == '\n') | |
205 | { | |
206 | pp_newline (pp); | |
207 | ++start; | |
208 | } | |
209 | } | |
210 | } | |
211 | ||
212 | /* Same as pp_wrap_text but wrap text only when in line-wrapping mode. */ | |
213 | static inline void | |
214 | pp_maybe_wrap_text (pretty_printer *pp, const char *start, const char *end) | |
215 | { | |
216 | if (pp_is_wrapping_line (pp)) | |
217 | pp_wrap_text (pp, start, end); | |
218 | else | |
219 | pp_append_text (pp, start, end); | |
220 | } | |
221 | ||
222 | /* Append to the output area of PRETTY-PRINTER a string specified by its | |
223 | STARTing character and LENGTH. */ | |
224 | static inline void | |
225 | pp_append_r (pretty_printer *pp, const char *start, int length) | |
226 | { | |
025311c4 GDR |
227 | obstack_grow (pp_buffer (pp)->obstack, start, length); |
228 | pp_buffer (pp)->line_length += length; | |
b6fe0bb8 GDR |
229 | } |
230 | ||
4b780675 GDR |
231 | /* Insert enough spaces into the output area of PRETTY-PRINTER to bring |
232 | the column position to the current indentation level, assuming that a | |
233 | newline has just been written to the buffer. */ | |
234 | void | |
b066401f | 235 | pp_indent (pretty_printer *pp) |
4b780675 GDR |
236 | { |
237 | int n = pp_indentation (pp); | |
238 | int i; | |
239 | ||
240 | for (i = 0; i < n; ++i) | |
241 | pp_space (pp); | |
242 | } | |
243 | ||
39ce81c9 | 244 | /* The following format specifiers are recognized as being client independent: |
b6fe0bb8 GDR |
245 | %d, %i: (signed) integer in base ten. |
246 | %u: unsigned integer in base ten. | |
247 | %o: unsigned integer in base eight. | |
248 | %x: unsigned integer in base sixteen. | |
249 | %ld, %li, %lo, %lu, %lx: long versions of the above. | |
250 | %lld, %lli, %llo, %llu, %llx: long long versions. | |
251 | %wd, %wi, %wo, %wu, %wx: HOST_WIDE_INT versions. | |
252 | %c: character. | |
253 | %s: string. | |
254 | %p: pointer. | |
4b84d650 JJ |
255 | %r: if pp_show_color(pp), switch to color identified by const char *. |
256 | %R: if pp_show_color(pp), reset color. | |
b6fe0bb8 | 257 | %m: strerror(text->err_no) - does not consume a value from args_ptr. |
a668adb2 | 258 | %%: '%'. |
ca09cd34 JM |
259 | %<: opening quote. |
260 | %>: closing quote. | |
261 | %': apostrophe (should only be used in untranslated messages; | |
262 | translations should use appropriate punctuation directly). | |
39ce81c9 ZW |
263 | %.*s: a substring the length of which is specified by an argument |
264 | integer. | |
265 | %Ns: likewise, but length specified as constant in the format string. | |
39ce81c9 ZW |
266 | Flag 'q': quote formatted text (must come immediately after '%'). |
267 | ||
268 | Arguments can be used sequentially, or through %N$ resp. *N$ | |
269 | notation Nth argument after the format string. If %N$ / *N$ | |
270 | notation is used, it must be used for all arguments, except %m, %%, | |
271 | %<, %> and %', which may not have a number, as they do not consume | |
272 | an argument. When %M$.*N$s is used, M must be N + 1. (This may | |
273 | also be written %M$.*s, provided N is not otherwise used.) The | |
274 | format string must have conversion specifiers with argument numbers | |
275 | 1 up to highest argument; each argument may only be used once. | |
276 | A format string can have at most 30 arguments. */ | |
277 | ||
278 | /* Formatting phases 1 and 2: render TEXT->format_spec plus | |
025311c4 | 279 | TEXT->args_ptr into a series of chunks in pp_buffer (PP)->args[]. |
b066401f | 280 | Phase 3 is in pp_format_text. */ |
39ce81c9 | 281 | |
b6fe0bb8 | 282 | void |
b066401f | 283 | pp_format (pretty_printer *pp, text_info *text) |
b6fe0bb8 | 284 | { |
025311c4 | 285 | output_buffer *buffer = pp_buffer (pp); |
39ce81c9 ZW |
286 | const char *p; |
287 | const char **args; | |
288 | struct chunk_info *new_chunk_array; | |
289 | ||
290 | unsigned int curarg = 0, chunk = 0, argno; | |
291 | pp_wrapping_mode_t old_wrapping_mode; | |
292 | bool any_unnumbered = false, any_numbered = false; | |
293 | const char **formatters[PP_NL_ARGMAX]; | |
294 | ||
295 | /* Allocate a new chunk structure. */ | |
296 | new_chunk_array = XOBNEW (&buffer->chunk_obstack, struct chunk_info); | |
297 | new_chunk_array->prev = buffer->cur_chunk_array; | |
298 | buffer->cur_chunk_array = new_chunk_array; | |
299 | args = new_chunk_array->args; | |
300 | ||
301 | /* Formatting phase 1: split up TEXT->format_spec into chunks in | |
025311c4 | 302 | pp_buffer (PP)->args[]. Even-numbered chunks are to be output |
39ce81c9 ZW |
303 | verbatim, odd-numbered chunks are format specifiers. |
304 | %m, %%, %<, %>, and %' are replaced with the appropriate text at | |
305 | this point. */ | |
306 | ||
307 | memset (formatters, 0, sizeof formatters); | |
b8698a0f | 308 | |
39ce81c9 | 309 | for (p = text->format_spec; *p; ) |
b6fe0bb8 | 310 | { |
39ce81c9 ZW |
311 | while (*p != '\0' && *p != '%') |
312 | { | |
313 | obstack_1grow (&buffer->chunk_obstack, *p); | |
314 | p++; | |
315 | } | |
b6fe0bb8 | 316 | |
39ce81c9 ZW |
317 | if (*p == '\0') |
318 | break; | |
319 | ||
320 | switch (*++p) | |
321 | { | |
322 | case '\0': | |
323 | gcc_unreachable (); | |
b8698a0f | 324 | |
39ce81c9 ZW |
325 | case '%': |
326 | obstack_1grow (&buffer->chunk_obstack, '%'); | |
327 | p++; | |
328 | continue; | |
b6fe0bb8 | 329 | |
39ce81c9 | 330 | case '<': |
4b84d650 JJ |
331 | { |
332 | obstack_grow (&buffer->chunk_obstack, | |
333 | open_quote, strlen (open_quote)); | |
334 | const char *colorstr | |
335 | = colorize_start (pp_show_color (pp), "quote"); | |
336 | obstack_grow (&buffer->chunk_obstack, colorstr, strlen (colorstr)); | |
337 | p++; | |
338 | continue; | |
339 | } | |
39ce81c9 ZW |
340 | |
341 | case '>': | |
4b84d650 JJ |
342 | { |
343 | const char *colorstr = colorize_stop (pp_show_color (pp)); | |
344 | obstack_grow (&buffer->chunk_obstack, colorstr, strlen (colorstr)); | |
345 | } | |
346 | /* FALLTHRU */ | |
39ce81c9 ZW |
347 | case '\'': |
348 | obstack_grow (&buffer->chunk_obstack, | |
241de8a0 | 349 | close_quote, strlen (close_quote)); |
39ce81c9 ZW |
350 | p++; |
351 | continue; | |
352 | ||
4b84d650 JJ |
353 | case 'R': |
354 | { | |
355 | const char *colorstr = colorize_stop (pp_show_color (pp)); | |
356 | obstack_grow (&buffer->chunk_obstack, colorstr, | |
357 | strlen (colorstr)); | |
358 | p++; | |
359 | continue; | |
360 | } | |
361 | ||
39ce81c9 ZW |
362 | case 'm': |
363 | { | |
364 | const char *errstr = xstrerror (text->err_no); | |
365 | obstack_grow (&buffer->chunk_obstack, errstr, strlen (errstr)); | |
366 | } | |
367 | p++; | |
368 | continue; | |
369 | ||
370 | default: | |
371 | /* Handled in phase 2. Terminate the plain chunk here. */ | |
372 | obstack_1grow (&buffer->chunk_obstack, '\0'); | |
373 | gcc_assert (chunk < PP_NL_ARGMAX * 2); | |
374 | args[chunk++] = XOBFINISH (&buffer->chunk_obstack, const char *); | |
375 | break; | |
376 | } | |
377 | ||
378 | if (ISDIGIT (*p)) | |
379 | { | |
380 | char *end; | |
381 | argno = strtoul (p, &end, 10) - 1; | |
382 | p = end; | |
383 | gcc_assert (*p == '$'); | |
384 | p++; | |
385 | ||
386 | any_numbered = true; | |
387 | gcc_assert (!any_unnumbered); | |
388 | } | |
389 | else | |
390 | { | |
391 | argno = curarg++; | |
392 | any_unnumbered = true; | |
393 | gcc_assert (!any_numbered); | |
394 | } | |
395 | gcc_assert (argno < PP_NL_ARGMAX); | |
396 | gcc_assert (!formatters[argno]); | |
397 | formatters[argno] = &args[chunk]; | |
398 | do | |
399 | { | |
400 | obstack_1grow (&buffer->chunk_obstack, *p); | |
401 | p++; | |
402 | } | |
403 | while (strchr ("qwl+#", p[-1])); | |
404 | ||
405 | if (p[-1] == '.') | |
406 | { | |
407 | /* We handle '%.Ns' and '%.*s' or '%M$.*N$s' | |
408 | (where M == N + 1). */ | |
409 | if (ISDIGIT (*p)) | |
410 | { | |
411 | do | |
412 | { | |
413 | obstack_1grow (&buffer->chunk_obstack, *p); | |
414 | p++; | |
415 | } | |
416 | while (ISDIGIT (p[-1])); | |
417 | gcc_assert (p[-1] == 's'); | |
418 | } | |
419 | else | |
420 | { | |
421 | gcc_assert (*p == '*'); | |
422 | obstack_1grow (&buffer->chunk_obstack, '*'); | |
423 | p++; | |
424 | ||
425 | if (ISDIGIT (*p)) | |
426 | { | |
427 | char *end; | |
428 | unsigned int argno2 = strtoul (p, &end, 10) - 1; | |
429 | p = end; | |
430 | gcc_assert (argno2 == argno - 1); | |
431 | gcc_assert (!any_unnumbered); | |
432 | gcc_assert (*p == '$'); | |
433 | ||
434 | p++; | |
435 | formatters[argno2] = formatters[argno]; | |
436 | } | |
437 | else | |
438 | { | |
439 | gcc_assert (!any_numbered); | |
440 | formatters[argno+1] = formatters[argno]; | |
441 | curarg++; | |
442 | } | |
443 | gcc_assert (*p == 's'); | |
444 | obstack_1grow (&buffer->chunk_obstack, 's'); | |
445 | p++; | |
446 | } | |
447 | } | |
448 | if (*p == '\0') | |
b6fe0bb8 GDR |
449 | break; |
450 | ||
39ce81c9 ZW |
451 | obstack_1grow (&buffer->chunk_obstack, '\0'); |
452 | gcc_assert (chunk < PP_NL_ARGMAX * 2); | |
453 | args[chunk++] = XOBFINISH (&buffer->chunk_obstack, const char *); | |
454 | } | |
455 | ||
456 | obstack_1grow (&buffer->chunk_obstack, '\0'); | |
457 | gcc_assert (chunk < PP_NL_ARGMAX * 2); | |
458 | args[chunk++] = XOBFINISH (&buffer->chunk_obstack, const char *); | |
459 | args[chunk] = 0; | |
b8698a0f | 460 | |
39ce81c9 ZW |
461 | /* Set output to the argument obstack, and switch line-wrapping and |
462 | prefixing off. */ | |
463 | buffer->obstack = &buffer->chunk_obstack; | |
464 | old_wrapping_mode = pp_set_verbatim_wrapping (pp); | |
465 | ||
466 | /* Second phase. Replace each formatter with the formatted text it | |
467 | corresponds to. */ | |
468 | ||
469 | for (argno = 0; formatters[argno]; argno++) | |
470 | { | |
471 | int precision = 0; | |
472 | bool wide = false; | |
473 | bool plus = false; | |
474 | bool hash = false; | |
475 | bool quote = false; | |
476 | ||
477 | /* We do not attempt to enforce any ordering on the modifier | |
478 | characters. */ | |
479 | ||
480 | for (p = *formatters[argno];; p++) | |
a668adb2 | 481 | { |
39ce81c9 ZW |
482 | switch (*p) |
483 | { | |
484 | case 'q': | |
485 | gcc_assert (!quote); | |
486 | quote = true; | |
487 | continue; | |
488 | ||
489 | case '+': | |
490 | gcc_assert (!plus); | |
491 | plus = true; | |
492 | continue; | |
493 | ||
494 | case '#': | |
495 | gcc_assert (!hash); | |
496 | hash = true; | |
497 | continue; | |
498 | ||
499 | case 'w': | |
500 | gcc_assert (!wide); | |
501 | wide = true; | |
502 | continue; | |
503 | ||
504 | case 'l': | |
505 | /* We don't support precision beyond that of "long long". */ | |
506 | gcc_assert (precision < 2); | |
507 | precision++; | |
508 | continue; | |
509 | } | |
510 | break; | |
a668adb2 | 511 | } |
39ce81c9 ZW |
512 | |
513 | gcc_assert (!wide || precision == 0); | |
514 | ||
515 | if (quote) | |
4b84d650 JJ |
516 | { |
517 | pp_string (pp, open_quote); | |
518 | pp_string (pp, colorize_start (pp_show_color (pp), "quote")); | |
519 | } | |
39ce81c9 ZW |
520 | |
521 | switch (*p) | |
b6fe0bb8 | 522 | { |
4b84d650 JJ |
523 | case 'r': |
524 | pp_string (pp, colorize_start (pp_show_color (pp), | |
525 | va_arg (*text->args_ptr, | |
526 | const char *))); | |
527 | break; | |
528 | ||
b6fe0bb8 GDR |
529 | case 'c': |
530 | pp_character (pp, va_arg (*text->args_ptr, int)); | |
531 | break; | |
532 | ||
533 | case 'd': | |
534 | case 'i': | |
39ce81c9 ZW |
535 | if (wide) |
536 | pp_wide_integer (pp, va_arg (*text->args_ptr, HOST_WIDE_INT)); | |
537 | else | |
538 | pp_integer_with_precision | |
539 | (pp, *text->args_ptr, precision, int, "d"); | |
b6fe0bb8 GDR |
540 | break; |
541 | ||
542 | case 'o': | |
39ce81c9 ZW |
543 | if (wide) |
544 | pp_scalar (pp, "%" HOST_WIDE_INT_PRINT "o", | |
545 | va_arg (*text->args_ptr, unsigned HOST_WIDE_INT)); | |
546 | else | |
547 | pp_integer_with_precision | |
548 | (pp, *text->args_ptr, precision, unsigned, "o"); | |
b6fe0bb8 GDR |
549 | break; |
550 | ||
551 | case 's': | |
552 | pp_string (pp, va_arg (*text->args_ptr, const char *)); | |
553 | break; | |
554 | ||
39ce81c9 ZW |
555 | case 'p': |
556 | pp_pointer (pp, va_arg (*text->args_ptr, void *)); | |
557 | break; | |
b6fe0bb8 GDR |
558 | |
559 | case 'u': | |
39ce81c9 ZW |
560 | if (wide) |
561 | pp_scalar (pp, HOST_WIDE_INT_PRINT_UNSIGNED, | |
562 | va_arg (*text->args_ptr, unsigned HOST_WIDE_INT)); | |
563 | else | |
564 | pp_integer_with_precision | |
565 | (pp, *text->args_ptr, precision, unsigned, "u"); | |
b6fe0bb8 GDR |
566 | break; |
567 | ||
568 | case 'x': | |
39ce81c9 ZW |
569 | if (wide) |
570 | pp_scalar (pp, HOST_WIDE_INT_PRINT_HEX, | |
571 | va_arg (*text->args_ptr, unsigned HOST_WIDE_INT)); | |
572 | else | |
573 | pp_integer_with_precision | |
574 | (pp, *text->args_ptr, precision, unsigned, "x"); | |
b6fe0bb8 GDR |
575 | break; |
576 | ||
b6fe0bb8 GDR |
577 | case '.': |
578 | { | |
579 | int n; | |
580 | const char *s; | |
d5706a1e | 581 | |
39ce81c9 ZW |
582 | /* We handle '%.Ns' and '%.*s' or '%M$.*N$s' |
583 | (where M == N + 1). The format string should be verified | |
584 | already from the first phase. */ | |
585 | p++; | |
586 | if (ISDIGIT (*p)) | |
587 | { | |
588 | char *end; | |
589 | n = strtoul (p, &end, 10); | |
590 | p = end; | |
591 | gcc_assert (*p == 's'); | |
592 | } | |
593 | else | |
594 | { | |
595 | gcc_assert (*p == '*'); | |
596 | p++; | |
597 | gcc_assert (*p == 's'); | |
598 | n = va_arg (*text->args_ptr, int); | |
599 | ||
600 | /* This consumes a second entry in the formatters array. */ | |
601 | gcc_assert (formatters[argno] == formatters[argno+1]); | |
602 | argno++; | |
603 | } | |
604 | ||
b6fe0bb8 GDR |
605 | s = va_arg (*text->args_ptr, const char *); |
606 | pp_append_text (pp, s, s + n); | |
607 | } | |
608 | break; | |
609 | ||
610 | default: | |
0e61db61 NS |
611 | { |
612 | bool ok; | |
39ce81c9 | 613 | |
0e61db61 | 614 | gcc_assert (pp_format_decoder (pp)); |
39ce81c9 ZW |
615 | ok = pp_format_decoder (pp) (pp, text, p, |
616 | precision, wide, plus, hash); | |
0e61db61 NS |
617 | gcc_assert (ok); |
618 | } | |
b6fe0bb8 | 619 | } |
39ce81c9 ZW |
620 | |
621 | if (quote) | |
4b84d650 JJ |
622 | { |
623 | pp_string (pp, colorize_stop (pp_show_color (pp))); | |
624 | pp_string (pp, close_quote); | |
625 | } | |
39ce81c9 ZW |
626 | |
627 | obstack_1grow (&buffer->chunk_obstack, '\0'); | |
628 | *formatters[argno] = XOBFINISH (&buffer->chunk_obstack, const char *); | |
b6fe0bb8 | 629 | } |
39ce81c9 ZW |
630 | |
631 | #ifdef ENABLE_CHECKING | |
632 | for (; argno < PP_NL_ARGMAX; argno++) | |
633 | gcc_assert (!formatters[argno]); | |
634 | #endif | |
635 | ||
636 | /* Revert to normal obstack and wrapping mode. */ | |
637 | buffer->obstack = &buffer->formatted_obstack; | |
638 | buffer->line_length = 0; | |
639 | pp_wrapping_mode (pp) = old_wrapping_mode; | |
640 | pp_clear_state (pp); | |
641 | } | |
642 | ||
643 | /* Format of a message pointed to by TEXT. */ | |
644 | void | |
b066401f | 645 | pp_output_formatted_text (pretty_printer *pp) |
39ce81c9 ZW |
646 | { |
647 | unsigned int chunk; | |
648 | output_buffer *buffer = pp_buffer (pp); | |
649 | struct chunk_info *chunk_array = buffer->cur_chunk_array; | |
650 | const char **args = chunk_array->args; | |
651 | ||
652 | gcc_assert (buffer->obstack == &buffer->formatted_obstack); | |
653 | gcc_assert (buffer->line_length == 0); | |
654 | ||
b066401f | 655 | /* This is a third phase, first 2 phases done in pp_format_args. |
39ce81c9 ZW |
656 | Now we actually print it. */ |
657 | for (chunk = 0; args[chunk]; chunk++) | |
658 | pp_string (pp, args[chunk]); | |
659 | ||
660 | /* Deallocate the chunk structure and everything after it (i.e. the | |
661 | associated series of formatted strings). */ | |
662 | buffer->cur_chunk_array = chunk_array->prev; | |
663 | obstack_free (&buffer->chunk_obstack, chunk_array); | |
b6fe0bb8 GDR |
664 | } |
665 | ||
666 | /* Helper subroutine of output_verbatim and verbatim. Do the appropriate | |
667 | settings needed by BUFFER for a verbatim formatting. */ | |
668 | void | |
b066401f | 669 | pp_format_verbatim (pretty_printer *pp, text_info *text) |
b6fe0bb8 | 670 | { |
b6fe0bb8 | 671 | /* Set verbatim mode. */ |
39ce81c9 ZW |
672 | pp_wrapping_mode_t oldmode = pp_set_verbatim_wrapping (pp); |
673 | ||
b6fe0bb8 | 674 | /* Do the actual formatting. */ |
39ce81c9 ZW |
675 | pp_format (pp, text); |
676 | pp_output_formatted_text (pp); | |
677 | ||
b6fe0bb8 | 678 | /* Restore previous settings. */ |
39ce81c9 | 679 | pp_wrapping_mode (pp) = oldmode; |
b6fe0bb8 GDR |
680 | } |
681 | ||
682 | /* Flush the content of BUFFER onto the attached stream. */ | |
683 | void | |
b066401f | 684 | pp_flush (pretty_printer *pp) |
b6fe0bb8 GDR |
685 | { |
686 | pp_write_text_to_stream (pp); | |
687 | pp_clear_state (pp); | |
025311c4 | 688 | fflush (pp_buffer (pp)->stream); |
b6fe0bb8 GDR |
689 | } |
690 | ||
691 | /* Sets the number of maximum characters per line PRETTY-PRINTER can | |
692 | output in line-wrapping mode. A LENGTH value 0 suppresses | |
693 | line-wrapping. */ | |
694 | void | |
b066401f | 695 | pp_set_line_maximum_length (pretty_printer *pp, int length) |
b6fe0bb8 GDR |
696 | { |
697 | pp_line_cutoff (pp) = length; | |
698 | pp_set_real_maximum_length (pp); | |
699 | } | |
700 | ||
701 | /* Clear PRETTY-PRINTER output area text info. */ | |
702 | void | |
b066401f | 703 | pp_clear_output_area (pretty_printer *pp) |
b6fe0bb8 | 704 | { |
025311c4 GDR |
705 | obstack_free (pp_buffer (pp)->obstack, |
706 | obstack_base (pp_buffer (pp)->obstack)); | |
707 | pp_buffer (pp)->line_length = 0; | |
b6fe0bb8 GDR |
708 | } |
709 | ||
710 | /* Set PREFIX for PRETTY-PRINTER. */ | |
711 | void | |
b066401f | 712 | pp_set_prefix (pretty_printer *pp, const char *prefix) |
b6fe0bb8 GDR |
713 | { |
714 | pp->prefix = prefix; | |
715 | pp_set_real_maximum_length (pp); | |
716 | pp->emitted_prefix = false; | |
717 | pp_indentation (pp) = 0; | |
718 | } | |
719 | ||
720 | /* Free PRETTY-PRINTER's prefix, a previously malloc()'d string. */ | |
721 | void | |
b066401f | 722 | pp_destroy_prefix (pretty_printer *pp) |
b6fe0bb8 GDR |
723 | { |
724 | if (pp->prefix != NULL) | |
725 | { | |
b1d5455a | 726 | free (CONST_CAST (char *, pp->prefix)); |
b6fe0bb8 GDR |
727 | pp->prefix = NULL; |
728 | } | |
729 | } | |
730 | ||
731 | /* Write out PRETTY-PRINTER's prefix. */ | |
732 | void | |
b066401f | 733 | pp_emit_prefix (pretty_printer *pp) |
b6fe0bb8 GDR |
734 | { |
735 | if (pp->prefix != NULL) | |
736 | { | |
737 | switch (pp_prefixing_rule (pp)) | |
738 | { | |
739 | default: | |
740 | case DIAGNOSTICS_SHOW_PREFIX_NEVER: | |
741 | break; | |
742 | ||
743 | case DIAGNOSTICS_SHOW_PREFIX_ONCE: | |
744 | if (pp->emitted_prefix) | |
745 | { | |
b066401f | 746 | pp_indent (pp); |
b6fe0bb8 GDR |
747 | break; |
748 | } | |
749 | pp_indentation (pp) += 3; | |
750 | /* Fall through. */ | |
751 | ||
752 | case DIAGNOSTICS_SHOW_PREFIX_EVERY_LINE: | |
753 | { | |
754 | int prefix_length = strlen (pp->prefix); | |
755 | pp_append_r (pp, pp->prefix, prefix_length); | |
756 | pp->emitted_prefix = true; | |
757 | } | |
758 | break; | |
759 | } | |
760 | } | |
761 | } | |
762 | ||
763 | /* Construct a PRETTY-PRINTER with PREFIX and of MAXIMUM_LENGTH | |
764 | characters per line. */ | |
da6ca2b5 GDR |
765 | |
766 | pretty_printer::pretty_printer (const char *p, int l) | |
767 | : buffer (new (XCNEW (output_buffer)) output_buffer ()), | |
768 | prefix (), | |
769 | padding (pp_none), | |
770 | maximum_length (), | |
771 | indent_skip (), | |
772 | wrapping (), | |
773 | format_decoder (), | |
774 | emitted_prefix (), | |
775 | need_newline (), | |
c3284718 | 776 | translate_identifiers (true), |
da6ca2b5 | 777 | show_color () |
b6fe0bb8 | 778 | { |
da6ca2b5 GDR |
779 | pp_line_cutoff (this) = l; |
780 | /* By default, we emit prefixes once per message. */ | |
781 | pp_prefixing_rule (this) = DIAGNOSTICS_SHOW_PREFIX_ONCE; | |
782 | pp_set_prefix (this, p); | |
b6fe0bb8 GDR |
783 | } |
784 | ||
025311c4 GDR |
785 | pretty_printer::~pretty_printer () |
786 | { | |
787 | buffer->~output_buffer (); | |
788 | XDELETE (buffer); | |
789 | } | |
790 | ||
b6fe0bb8 GDR |
791 | /* Append a string delimited by START and END to the output area of |
792 | PRETTY-PRINTER. No line wrapping is done. However, if beginning a | |
793 | new line then emit PRETTY-PRINTER's prefix and skip any leading | |
794 | whitespace if appropriate. The caller must ensure that it is | |
795 | safe to do so. */ | |
796 | void | |
b066401f | 797 | pp_append_text (pretty_printer *pp, const char *start, const char *end) |
b6fe0bb8 GDR |
798 | { |
799 | /* Emit prefix and skip whitespace if we're starting a new line. */ | |
025311c4 | 800 | if (pp_buffer (pp)->line_length == 0) |
b6fe0bb8 GDR |
801 | { |
802 | pp_emit_prefix (pp); | |
803 | if (pp_is_wrapping_line (pp)) | |
804 | while (start != end && *start == ' ') | |
805 | ++start; | |
806 | } | |
807 | pp_append_r (pp, start, end - start); | |
808 | } | |
809 | ||
810 | /* Finishes constructing a NULL-terminated character string representing | |
811 | the PRETTY-PRINTED text. */ | |
812 | const char * | |
b066401f | 813 | pp_formatted_text (pretty_printer *pp) |
b6fe0bb8 | 814 | { |
025311c4 | 815 | obstack_1grow (pp_buffer (pp)->obstack, '\0'); |
b6fe0bb8 GDR |
816 | return pp_formatted_text_data (pp); |
817 | } | |
818 | ||
819 | /* Return a pointer to the last character emitted in PRETTY-PRINTER's | |
820 | output area. A NULL pointer means no character available. */ | |
821 | const char * | |
b066401f | 822 | pp_last_position_in_text (const pretty_printer *pp) |
b6fe0bb8 GDR |
823 | { |
824 | const char *p = NULL; | |
025311c4 | 825 | struct obstack *text = pp_buffer (pp)->obstack; |
b6fe0bb8 GDR |
826 | |
827 | if (obstack_base (text) != obstack_next_free (text)) | |
828 | p = ((const char *) obstack_next_free (text)) - 1; | |
829 | return p; | |
830 | } | |
831 | ||
832 | /* Return the amount of characters PRETTY-PRINTER can accept to | |
ba228239 | 833 | make a full line. Meaningful only in line-wrapping mode. */ |
b6fe0bb8 | 834 | int |
b066401f | 835 | pp_remaining_character_count_for_line (pretty_printer *pp) |
b6fe0bb8 | 836 | { |
025311c4 | 837 | return pp->maximum_length - pp_buffer (pp)->line_length; |
b6fe0bb8 GDR |
838 | } |
839 | ||
840 | ||
841 | /* Format a message into BUFFER a la printf. */ | |
842 | void | |
843 | pp_printf (pretty_printer *pp, const char *msg, ...) | |
844 | { | |
845 | text_info text; | |
846 | va_list ap; | |
847 | ||
848 | va_start (ap, msg); | |
849 | text.err_no = errno; | |
850 | text.args_ptr = ≈ | |
851 | text.format_spec = msg; | |
39ce81c9 ZW |
852 | text.locus = NULL; |
853 | pp_format (pp, &text); | |
854 | pp_output_formatted_text (pp); | |
b6fe0bb8 GDR |
855 | va_end (ap); |
856 | } | |
857 | ||
858 | ||
859 | /* Output MESSAGE verbatim into BUFFER. */ | |
860 | void | |
861 | pp_verbatim (pretty_printer *pp, const char *msg, ...) | |
862 | { | |
863 | text_info text; | |
864 | va_list ap; | |
865 | ||
866 | va_start (ap, msg); | |
867 | text.err_no = errno; | |
868 | text.args_ptr = ≈ | |
869 | text.format_spec = msg; | |
39ce81c9 | 870 | text.locus = NULL; |
b6fe0bb8 GDR |
871 | pp_format_verbatim (pp, &text); |
872 | va_end (ap); | |
873 | } | |
874 | ||
875 | ||
876 | ||
877 | /* Have PRETTY-PRINTER start a new line. */ | |
878 | void | |
b066401f | 879 | pp_newline (pretty_printer *pp) |
b6fe0bb8 | 880 | { |
025311c4 | 881 | obstack_1grow (pp_buffer (pp)->obstack, '\n'); |
c4669594 | 882 | pp_needs_newline (pp) = false; |
025311c4 | 883 | pp_buffer (pp)->line_length = 0; |
b6fe0bb8 GDR |
884 | } |
885 | ||
886 | /* Have PRETTY-PRINTER add a CHARACTER. */ | |
887 | void | |
b066401f | 888 | pp_character (pretty_printer *pp, int c) |
b6fe0bb8 GDR |
889 | { |
890 | if (pp_is_wrapping_line (pp) | |
891 | && pp_remaining_character_count_for_line (pp) <= 0) | |
892 | { | |
893 | pp_newline (pp); | |
894 | if (ISSPACE (c)) | |
895 | return; | |
896 | } | |
025311c4 GDR |
897 | obstack_1grow (pp_buffer (pp)->obstack, c); |
898 | ++pp_buffer (pp)->line_length; | |
b6fe0bb8 GDR |
899 | } |
900 | ||
901 | /* Append a STRING to the output area of PRETTY-PRINTER; the STRING may | |
902 | be line-wrapped if in appropriate mode. */ | |
903 | void | |
b066401f | 904 | pp_string (pretty_printer *pp, const char *str) |
b6fe0bb8 GDR |
905 | { |
906 | pp_maybe_wrap_text (pp, str, str + (str ? strlen (str) : 0)); | |
907 | } | |
908 | ||
471854f8 | 909 | /* Maybe print out a whitespace if needed. */ |
b6fe0bb8 | 910 | |
b9b44fb9 | 911 | void |
b066401f | 912 | pp_maybe_space (pretty_printer *pp) |
b9b44fb9 | 913 | { |
b066401f | 914 | if (pp->padding != pp_none) |
b9b44fb9 GDR |
915 | { |
916 | pp_space (pp); | |
b066401f | 917 | pp->padding = pp_none; |
b9b44fb9 GDR |
918 | } |
919 | } | |
0fc80001 GDR |
920 | |
921 | // Add a newline to the pretty printer PP and flush formatted text. | |
922 | ||
923 | void | |
924 | pp_newline_and_flush (pretty_printer *pp) | |
925 | { | |
926 | pp_newline (pp); | |
927 | pp_flush (pp); | |
928 | pp_needs_newline (pp) = false; | |
929 | } | |
930 | ||
931 | // Add a newline to the pretty printer PP, followed by indentation. | |
932 | ||
933 | void | |
934 | pp_newline_and_indent (pretty_printer *pp, int n) | |
935 | { | |
936 | pp_indentation (pp) += n; | |
937 | pp_newline (pp); | |
938 | pp_indent (pp); | |
939 | pp_needs_newline (pp) = false; | |
940 | } | |
941 | ||
942 | // Add separator C, followed by a single whitespace. | |
943 | ||
944 | void | |
945 | pp_separate_with (pretty_printer *pp, char c) | |
946 | { | |
947 | pp_character (pp, c); | |
948 | pp_space (pp); | |
949 | } | |
950 | ||
a3af5087 JM |
951 | \f |
952 | /* The string starting at P has LEN (at least 1) bytes left; if they | |
953 | start with a valid UTF-8 sequence, return the length of that | |
954 | sequence and set *VALUE to the value of that sequence, and | |
955 | otherwise return 0 and set *VALUE to (unsigned int) -1. */ | |
956 | ||
957 | static int | |
958 | decode_utf8_char (const unsigned char *p, size_t len, unsigned int *value) | |
959 | { | |
960 | unsigned int t = *p; | |
961 | ||
962 | if (len == 0) | |
963 | abort (); | |
964 | if (t & 0x80) | |
965 | { | |
966 | size_t utf8_len = 0; | |
967 | unsigned int ch; | |
968 | size_t i; | |
969 | for (t = *p; t & 0x80; t <<= 1) | |
970 | utf8_len++; | |
971 | ||
972 | if (utf8_len > len || utf8_len < 2 || utf8_len > 6) | |
973 | { | |
974 | *value = (unsigned int) -1; | |
975 | return 0; | |
976 | } | |
977 | ch = *p & ((1 << (7 - utf8_len)) - 1); | |
978 | for (i = 1; i < utf8_len; i++) | |
979 | { | |
980 | unsigned int u = p[i]; | |
981 | if ((u & 0xC0) != 0x80) | |
982 | { | |
983 | *value = (unsigned int) -1; | |
984 | return 0; | |
985 | } | |
986 | ch = (ch << 6) | (u & 0x3F); | |
987 | } | |
988 | if ( (ch <= 0x7F && utf8_len > 1) | |
989 | || (ch <= 0x7FF && utf8_len > 2) | |
990 | || (ch <= 0xFFFF && utf8_len > 3) | |
991 | || (ch <= 0x1FFFFF && utf8_len > 4) | |
992 | || (ch <= 0x3FFFFFF && utf8_len > 5) | |
993 | || (ch >= 0xD800 && ch <= 0xDFFF)) | |
994 | { | |
995 | *value = (unsigned int) -1; | |
996 | return 0; | |
997 | } | |
998 | *value = ch; | |
999 | return utf8_len; | |
1000 | } | |
1001 | else | |
1002 | { | |
1003 | *value = t; | |
1004 | return 1; | |
1005 | } | |
1006 | } | |
1007 | ||
ab9b814d JM |
1008 | /* Allocator for identifier_to_locale and corresponding function to |
1009 | free memory. */ | |
1010 | ||
1011 | void *(*identifier_to_locale_alloc) (size_t) = xmalloc; | |
1012 | void (*identifier_to_locale_free) (void *) = free; | |
1013 | ||
a3af5087 JM |
1014 | /* Given IDENT, an identifier in the internal encoding, return a |
1015 | version of IDENT suitable for diagnostics in the locale character | |
ab9b814d JM |
1016 | set: either IDENT itself, or a string, allocated using |
1017 | identifier_to_locale_alloc, converted to the locale character set | |
1018 | and using escape sequences if not representable in the locale | |
1019 | character set or containing control characters or invalid byte | |
1020 | sequences. Existing backslashes in IDENT are not doubled, so the | |
1021 | result may not uniquely specify the contents of an arbitrary byte | |
1022 | sequence identifier. */ | |
a3af5087 JM |
1023 | |
1024 | const char * | |
1025 | identifier_to_locale (const char *ident) | |
1026 | { | |
1027 | const unsigned char *uid = (const unsigned char *) ident; | |
1028 | size_t idlen = strlen (ident); | |
1029 | bool valid_printable_utf8 = true; | |
1030 | bool all_ascii = true; | |
1031 | size_t i; | |
1032 | ||
1033 | for (i = 0; i < idlen;) | |
1034 | { | |
1035 | unsigned int c; | |
1036 | size_t utf8_len = decode_utf8_char (&uid[i], idlen - i, &c); | |
1037 | if (utf8_len == 0 || c <= 0x1F || (c >= 0x7F && c <= 0x9F)) | |
1038 | { | |
1039 | valid_printable_utf8 = false; | |
1040 | break; | |
1041 | } | |
1042 | if (utf8_len > 1) | |
1043 | all_ascii = false; | |
1044 | i += utf8_len; | |
1045 | } | |
1046 | ||
1047 | /* If IDENT contains invalid UTF-8 sequences (which may occur with | |
1048 | attributes putting arbitrary byte sequences in identifiers), or | |
1049 | control characters, we use octal escape sequences for all bytes | |
1050 | outside printable ASCII. */ | |
1051 | if (!valid_printable_utf8) | |
1052 | { | |
ab9b814d | 1053 | char *ret = (char *) identifier_to_locale_alloc (4 * idlen + 1); |
a3af5087 JM |
1054 | char *p = ret; |
1055 | for (i = 0; i < idlen; i++) | |
1056 | { | |
1057 | if (uid[i] > 0x1F && uid[i] < 0x7F) | |
1058 | *p++ = uid[i]; | |
1059 | else | |
1060 | { | |
1061 | sprintf (p, "\\%03o", uid[i]); | |
1062 | p += 4; | |
1063 | } | |
1064 | } | |
1065 | *p = 0; | |
1066 | return ret; | |
1067 | } | |
1068 | ||
1069 | /* Otherwise, if it is valid printable ASCII, or printable UTF-8 | |
1070 | with the locale character set being UTF-8, IDENT is used. */ | |
1071 | if (all_ascii || locale_utf8) | |
1072 | return ident; | |
1073 | ||
1074 | /* Otherwise IDENT is converted to the locale character set if | |
1075 | possible. */ | |
1076 | #if defined ENABLE_NLS && defined HAVE_LANGINFO_CODESET && HAVE_ICONV | |
1077 | if (locale_encoding != NULL) | |
1078 | { | |
1079 | iconv_t cd = iconv_open (locale_encoding, "UTF-8"); | |
1080 | bool conversion_ok = true; | |
1081 | char *ret = NULL; | |
1082 | if (cd != (iconv_t) -1) | |
1083 | { | |
1084 | size_t ret_alloc = 4 * idlen + 1; | |
1085 | for (;;) | |
1086 | { | |
1087 | /* Repeat the whole conversion process as needed with | |
1088 | larger buffers so non-reversible transformations can | |
1089 | always be detected. */ | |
1090 | ICONV_CONST char *inbuf = CONST_CAST (char *, ident); | |
1091 | char *outbuf; | |
1092 | size_t inbytesleft = idlen; | |
1093 | size_t outbytesleft = ret_alloc - 1; | |
1094 | size_t iconv_ret; | |
1095 | ||
ab9b814d | 1096 | ret = (char *) identifier_to_locale_alloc (ret_alloc); |
a3af5087 JM |
1097 | outbuf = ret; |
1098 | ||
1099 | if (iconv (cd, 0, 0, 0, 0) == (size_t) -1) | |
1100 | { | |
1101 | conversion_ok = false; | |
1102 | break; | |
1103 | } | |
1104 | ||
1105 | iconv_ret = iconv (cd, &inbuf, &inbytesleft, | |
1106 | &outbuf, &outbytesleft); | |
1107 | if (iconv_ret == (size_t) -1 || inbytesleft != 0) | |
1108 | { | |
1109 | if (errno == E2BIG) | |
1110 | { | |
1111 | ret_alloc *= 2; | |
ab9b814d | 1112 | identifier_to_locale_free (ret); |
a3af5087 JM |
1113 | ret = NULL; |
1114 | continue; | |
1115 | } | |
1116 | else | |
1117 | { | |
1118 | conversion_ok = false; | |
1119 | break; | |
1120 | } | |
1121 | } | |
1122 | else if (iconv_ret != 0) | |
1123 | { | |
1124 | conversion_ok = false; | |
1125 | break; | |
1126 | } | |
1127 | /* Return to initial shift state. */ | |
1128 | if (iconv (cd, 0, 0, &outbuf, &outbytesleft) == (size_t) -1) | |
1129 | { | |
1130 | if (errno == E2BIG) | |
1131 | { | |
1132 | ret_alloc *= 2; | |
ab9b814d | 1133 | identifier_to_locale_free (ret); |
a3af5087 JM |
1134 | ret = NULL; |
1135 | continue; | |
1136 | } | |
1137 | else | |
1138 | { | |
1139 | conversion_ok = false; | |
1140 | break; | |
1141 | } | |
1142 | } | |
1143 | *outbuf = 0; | |
1144 | break; | |
1145 | } | |
1146 | iconv_close (cd); | |
1147 | if (conversion_ok) | |
1148 | return ret; | |
1149 | } | |
1150 | } | |
1151 | #endif | |
1152 | ||
1153 | /* Otherwise, convert non-ASCII characters in IDENT to UCNs. */ | |
1154 | { | |
ab9b814d | 1155 | char *ret = (char *) identifier_to_locale_alloc (10 * idlen + 1); |
a3af5087 JM |
1156 | char *p = ret; |
1157 | for (i = 0; i < idlen;) | |
1158 | { | |
1159 | unsigned int c; | |
1160 | size_t utf8_len = decode_utf8_char (&uid[i], idlen - i, &c); | |
1161 | if (utf8_len == 1) | |
1162 | *p++ = uid[i]; | |
1163 | else | |
1164 | { | |
1165 | sprintf (p, "\\U%08x", c); | |
1166 | p += 10; | |
1167 | } | |
1168 | i += utf8_len; | |
1169 | } | |
1170 | *p = 0; | |
1171 | return ret; | |
1172 | } | |
1173 | } |