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b6fe0bb8 | 1 | /* Various declarations for language-independent pretty-print subroutines. |
5624e564 | 2 | Copyright (C) 2003-2015 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 | |
f79520bb | 34 | /* Overwrite the given location/range within this text_info's rich_location. |
8a645150 DM |
35 | For use e.g. when implementing "+" in client format decoders. */ |
36 | ||
37 | void | |
f79520bb | 38 | text_info::set_location (unsigned int idx, location_t loc, bool show_caret_p) |
8a645150 DM |
39 | { |
40 | gcc_checking_assert (m_richloc); | |
f79520bb | 41 | m_richloc->set_range (line_table, idx, loc, show_caret_p); |
8a645150 DM |
42 | } |
43 | ||
44 | location_t | |
45 | text_info::get_location (unsigned int index_of_location) const | |
46 | { | |
47 | gcc_checking_assert (m_richloc); | |
48 | ||
49 | if (index_of_location == 0) | |
50 | return m_richloc->get_loc (); | |
51 | else | |
52 | return UNKNOWN_LOCATION; | |
53 | } | |
54 | ||
da6ca2b5 GDR |
55 | // Default construct an output buffer. |
56 | ||
57 | output_buffer::output_buffer () | |
58 | : formatted_obstack (), | |
59 | chunk_obstack (), | |
60 | obstack (&formatted_obstack), | |
61 | cur_chunk_array (), | |
62 | stream (stderr), | |
63 | line_length (), | |
48749dbc MLI |
64 | digit_buffer (), |
65 | flush_p (true) | |
da6ca2b5 GDR |
66 | { |
67 | obstack_init (&formatted_obstack); | |
68 | obstack_init (&chunk_obstack); | |
69 | } | |
70 | ||
025311c4 GDR |
71 | // Release resources owned by an output buffer at the end of lifetime. |
72 | ||
73 | output_buffer::~output_buffer () | |
74 | { | |
65f5c720 RB |
75 | obstack_free (&chunk_obstack, NULL); |
76 | obstack_free (&formatted_obstack, NULL); | |
025311c4 GDR |
77 | } |
78 | ||
b6fe0bb8 GDR |
79 | |
80 | /* Format an integer given by va_arg (ARG, type-specifier T) where | |
81 | type-specifier is a precision modifier as indicated by PREC. F is | |
82 | a string used to construct the appropriate format-specifier. */ | |
83 | #define pp_integer_with_precision(PP, ARG, PREC, T, F) \ | |
84 | do \ | |
85 | switch (PREC) \ | |
86 | { \ | |
87 | case 0: \ | |
88 | pp_scalar (PP, "%" F, va_arg (ARG, T)); \ | |
89 | break; \ | |
90 | \ | |
91 | case 1: \ | |
92 | pp_scalar (PP, "%l" F, va_arg (ARG, long T)); \ | |
93 | break; \ | |
94 | \ | |
95 | case 2: \ | |
2a157700 | 96 | pp_scalar (PP, "%" HOST_LONG_LONG_FORMAT F, va_arg (ARG, long long T)); \ |
b6fe0bb8 GDR |
97 | break; \ |
98 | \ | |
99 | default: \ | |
100 | break; \ | |
101 | } \ | |
102 | while (0) | |
103 | ||
104 | ||
105 | /* Subroutine of pp_set_maximum_length. Set up PRETTY-PRINTER's | |
106 | internal maximum characters per line. */ | |
107 | static void | |
108 | pp_set_real_maximum_length (pretty_printer *pp) | |
109 | { | |
110 | /* If we're told not to wrap lines then do the obvious thing. In case | |
111 | we'll emit prefix only once per message, it is appropriate | |
112 | not to increase unnecessarily the line-length cut-off. */ | |
113 | if (!pp_is_wrapping_line (pp) | |
114 | || pp_prefixing_rule (pp) == DIAGNOSTICS_SHOW_PREFIX_ONCE | |
115 | || pp_prefixing_rule (pp) == DIAGNOSTICS_SHOW_PREFIX_NEVER) | |
116 | pp->maximum_length = pp_line_cutoff (pp); | |
117 | else | |
118 | { | |
119 | int prefix_length = pp->prefix ? strlen (pp->prefix) : 0; | |
120 | /* If the prefix is ridiculously too long, output at least | |
121 | 32 characters. */ | |
122 | if (pp_line_cutoff (pp) - prefix_length < 32) | |
123 | pp->maximum_length = pp_line_cutoff (pp) + 32; | |
124 | else | |
125 | pp->maximum_length = pp_line_cutoff (pp); | |
126 | } | |
127 | } | |
128 | ||
129 | /* Clear PRETTY-PRINTER's output state. */ | |
130 | static inline void | |
131 | pp_clear_state (pretty_printer *pp) | |
132 | { | |
133 | pp->emitted_prefix = false; | |
134 | pp_indentation (pp) = 0; | |
135 | } | |
136 | ||
b6fe0bb8 | 137 | /* Flush the formatted text of PRETTY-PRINTER onto the attached stream. */ |
6de9cd9a | 138 | void |
b6fe0bb8 GDR |
139 | pp_write_text_to_stream (pretty_printer *pp) |
140 | { | |
141 | const char *text = pp_formatted_text (pp); | |
025311c4 | 142 | fputs (text, pp_buffer (pp)->stream); |
b6fe0bb8 GDR |
143 | pp_clear_output_area (pp); |
144 | } | |
145 | ||
7eba871a SB |
146 | /* As pp_write_text_to_stream, but for GraphViz label output. |
147 | ||
148 | Flush the formatted text of pretty-printer PP onto the attached stream. | |
149 | Replace characters in PPF that have special meaning in a GraphViz .dot | |
150 | file. | |
151 | ||
152 | This routine is not very fast, but it doesn't have to be as this is only | |
153 | be used by routines dumping intermediate representations in graph form. */ | |
154 | ||
155 | void | |
156 | pp_write_text_as_dot_label_to_stream (pretty_printer *pp, bool for_record) | |
157 | { | |
158 | const char *text = pp_formatted_text (pp); | |
159 | const char *p = text; | |
025311c4 | 160 | FILE *fp = pp_buffer (pp)->stream; |
7eba871a SB |
161 | |
162 | while (*p) | |
163 | { | |
164 | switch (*p) | |
165 | { | |
166 | /* Print newlines as a left-aligned newline. */ | |
167 | case '\n': | |
168 | fputs ("\\l\\\n", fp); | |
169 | break; | |
170 | ||
171 | /* A pipe is only special for record-shape nodes. */ | |
172 | case '|': | |
173 | if (for_record) | |
174 | fputc ('\\', fp); | |
175 | fputc (*p, fp); | |
176 | break; | |
177 | ||
178 | /* The following characters always have to be escaped | |
179 | for use in labels. */ | |
180 | case '{': | |
181 | case '}': | |
182 | case '<': | |
183 | case '>': | |
184 | case '"': | |
185 | case ' ': | |
186 | fputc ('\\', fp); | |
187 | /* fall through */ | |
188 | default: | |
189 | fputc (*p, fp); | |
190 | break; | |
191 | } | |
192 | p++; | |
193 | } | |
194 | ||
195 | pp_clear_output_area (pp); | |
196 | } | |
197 | ||
b6fe0bb8 GDR |
198 | /* Wrap a text delimited by START and END into PRETTY-PRINTER. */ |
199 | static void | |
200 | pp_wrap_text (pretty_printer *pp, const char *start, const char *end) | |
201 | { | |
202 | bool wrapping_line = pp_is_wrapping_line (pp); | |
203 | ||
204 | while (start != end) | |
205 | { | |
206 | /* Dump anything bordered by whitespaces. */ | |
207 | { | |
208 | const char *p = start; | |
209 | while (p != end && !ISBLANK (*p) && *p != '\n') | |
210 | ++p; | |
211 | if (wrapping_line | |
212 | && p - start >= pp_remaining_character_count_for_line (pp)) | |
213 | pp_newline (pp); | |
214 | pp_append_text (pp, start, p); | |
215 | start = p; | |
216 | } | |
217 | ||
218 | if (start != end && ISBLANK (*start)) | |
219 | { | |
220 | pp_space (pp); | |
221 | ++start; | |
222 | } | |
223 | if (start != end && *start == '\n') | |
224 | { | |
225 | pp_newline (pp); | |
226 | ++start; | |
227 | } | |
228 | } | |
229 | } | |
230 | ||
231 | /* Same as pp_wrap_text but wrap text only when in line-wrapping mode. */ | |
232 | static inline void | |
233 | pp_maybe_wrap_text (pretty_printer *pp, const char *start, const char *end) | |
234 | { | |
235 | if (pp_is_wrapping_line (pp)) | |
236 | pp_wrap_text (pp, start, end); | |
237 | else | |
238 | pp_append_text (pp, start, end); | |
239 | } | |
240 | ||
241 | /* Append to the output area of PRETTY-PRINTER a string specified by its | |
242 | STARTing character and LENGTH. */ | |
243 | static inline void | |
244 | pp_append_r (pretty_printer *pp, const char *start, int length) | |
245 | { | |
c4100eae | 246 | output_buffer_append_r (pp_buffer (pp), start, length); |
b6fe0bb8 GDR |
247 | } |
248 | ||
4b780675 GDR |
249 | /* Insert enough spaces into the output area of PRETTY-PRINTER to bring |
250 | the column position to the current indentation level, assuming that a | |
251 | newline has just been written to the buffer. */ | |
252 | void | |
b066401f | 253 | pp_indent (pretty_printer *pp) |
4b780675 GDR |
254 | { |
255 | int n = pp_indentation (pp); | |
256 | int i; | |
257 | ||
258 | for (i = 0; i < n; ++i) | |
259 | pp_space (pp); | |
260 | } | |
261 | ||
39ce81c9 | 262 | /* The following format specifiers are recognized as being client independent: |
b6fe0bb8 GDR |
263 | %d, %i: (signed) integer in base ten. |
264 | %u: unsigned integer in base ten. | |
265 | %o: unsigned integer in base eight. | |
266 | %x: unsigned integer in base sixteen. | |
267 | %ld, %li, %lo, %lu, %lx: long versions of the above. | |
268 | %lld, %lli, %llo, %llu, %llx: long long versions. | |
269 | %wd, %wi, %wo, %wu, %wx: HOST_WIDE_INT versions. | |
270 | %c: character. | |
271 | %s: string. | |
272 | %p: pointer. | |
4b84d650 JJ |
273 | %r: if pp_show_color(pp), switch to color identified by const char *. |
274 | %R: if pp_show_color(pp), reset color. | |
b6fe0bb8 | 275 | %m: strerror(text->err_no) - does not consume a value from args_ptr. |
a668adb2 | 276 | %%: '%'. |
ca09cd34 JM |
277 | %<: opening quote. |
278 | %>: closing quote. | |
279 | %': apostrophe (should only be used in untranslated messages; | |
280 | translations should use appropriate punctuation directly). | |
39ce81c9 ZW |
281 | %.*s: a substring the length of which is specified by an argument |
282 | integer. | |
283 | %Ns: likewise, but length specified as constant in the format string. | |
39ce81c9 ZW |
284 | Flag 'q': quote formatted text (must come immediately after '%'). |
285 | ||
286 | Arguments can be used sequentially, or through %N$ resp. *N$ | |
287 | notation Nth argument after the format string. If %N$ / *N$ | |
288 | notation is used, it must be used for all arguments, except %m, %%, | |
289 | %<, %> and %', which may not have a number, as they do not consume | |
290 | an argument. When %M$.*N$s is used, M must be N + 1. (This may | |
291 | also be written %M$.*s, provided N is not otherwise used.) The | |
292 | format string must have conversion specifiers with argument numbers | |
293 | 1 up to highest argument; each argument may only be used once. | |
294 | A format string can have at most 30 arguments. */ | |
295 | ||
296 | /* Formatting phases 1 and 2: render TEXT->format_spec plus | |
025311c4 | 297 | TEXT->args_ptr into a series of chunks in pp_buffer (PP)->args[]. |
b066401f | 298 | Phase 3 is in pp_format_text. */ |
39ce81c9 | 299 | |
b6fe0bb8 | 300 | void |
b066401f | 301 | pp_format (pretty_printer *pp, text_info *text) |
b6fe0bb8 | 302 | { |
025311c4 | 303 | output_buffer *buffer = pp_buffer (pp); |
39ce81c9 ZW |
304 | const char *p; |
305 | const char **args; | |
306 | struct chunk_info *new_chunk_array; | |
307 | ||
308 | unsigned int curarg = 0, chunk = 0, argno; | |
309 | pp_wrapping_mode_t old_wrapping_mode; | |
310 | bool any_unnumbered = false, any_numbered = false; | |
311 | const char **formatters[PP_NL_ARGMAX]; | |
312 | ||
313 | /* Allocate a new chunk structure. */ | |
314 | new_chunk_array = XOBNEW (&buffer->chunk_obstack, struct chunk_info); | |
315 | new_chunk_array->prev = buffer->cur_chunk_array; | |
316 | buffer->cur_chunk_array = new_chunk_array; | |
317 | args = new_chunk_array->args; | |
318 | ||
319 | /* Formatting phase 1: split up TEXT->format_spec into chunks in | |
025311c4 | 320 | pp_buffer (PP)->args[]. Even-numbered chunks are to be output |
39ce81c9 ZW |
321 | verbatim, odd-numbered chunks are format specifiers. |
322 | %m, %%, %<, %>, and %' are replaced with the appropriate text at | |
323 | this point. */ | |
324 | ||
325 | memset (formatters, 0, sizeof formatters); | |
b8698a0f | 326 | |
39ce81c9 | 327 | for (p = text->format_spec; *p; ) |
b6fe0bb8 | 328 | { |
39ce81c9 ZW |
329 | while (*p != '\0' && *p != '%') |
330 | { | |
331 | obstack_1grow (&buffer->chunk_obstack, *p); | |
332 | p++; | |
333 | } | |
b6fe0bb8 | 334 | |
39ce81c9 ZW |
335 | if (*p == '\0') |
336 | break; | |
337 | ||
338 | switch (*++p) | |
339 | { | |
340 | case '\0': | |
341 | gcc_unreachable (); | |
b8698a0f | 342 | |
39ce81c9 ZW |
343 | case '%': |
344 | obstack_1grow (&buffer->chunk_obstack, '%'); | |
345 | p++; | |
346 | continue; | |
b6fe0bb8 | 347 | |
39ce81c9 | 348 | case '<': |
4b84d650 JJ |
349 | { |
350 | obstack_grow (&buffer->chunk_obstack, | |
351 | open_quote, strlen (open_quote)); | |
352 | const char *colorstr | |
353 | = colorize_start (pp_show_color (pp), "quote"); | |
354 | obstack_grow (&buffer->chunk_obstack, colorstr, strlen (colorstr)); | |
355 | p++; | |
356 | continue; | |
357 | } | |
39ce81c9 ZW |
358 | |
359 | case '>': | |
4b84d650 JJ |
360 | { |
361 | const char *colorstr = colorize_stop (pp_show_color (pp)); | |
362 | obstack_grow (&buffer->chunk_obstack, colorstr, strlen (colorstr)); | |
363 | } | |
364 | /* FALLTHRU */ | |
39ce81c9 ZW |
365 | case '\'': |
366 | obstack_grow (&buffer->chunk_obstack, | |
241de8a0 | 367 | close_quote, strlen (close_quote)); |
39ce81c9 ZW |
368 | p++; |
369 | continue; | |
370 | ||
4b84d650 JJ |
371 | case 'R': |
372 | { | |
373 | const char *colorstr = colorize_stop (pp_show_color (pp)); | |
374 | obstack_grow (&buffer->chunk_obstack, colorstr, | |
375 | strlen (colorstr)); | |
376 | p++; | |
377 | continue; | |
378 | } | |
379 | ||
39ce81c9 ZW |
380 | case 'm': |
381 | { | |
382 | const char *errstr = xstrerror (text->err_no); | |
383 | obstack_grow (&buffer->chunk_obstack, errstr, strlen (errstr)); | |
384 | } | |
385 | p++; | |
386 | continue; | |
387 | ||
388 | default: | |
389 | /* Handled in phase 2. Terminate the plain chunk here. */ | |
390 | obstack_1grow (&buffer->chunk_obstack, '\0'); | |
391 | gcc_assert (chunk < PP_NL_ARGMAX * 2); | |
392 | args[chunk++] = XOBFINISH (&buffer->chunk_obstack, const char *); | |
393 | break; | |
394 | } | |
395 | ||
396 | if (ISDIGIT (*p)) | |
397 | { | |
398 | char *end; | |
399 | argno = strtoul (p, &end, 10) - 1; | |
400 | p = end; | |
401 | gcc_assert (*p == '$'); | |
402 | p++; | |
403 | ||
404 | any_numbered = true; | |
405 | gcc_assert (!any_unnumbered); | |
406 | } | |
407 | else | |
408 | { | |
409 | argno = curarg++; | |
410 | any_unnumbered = true; | |
411 | gcc_assert (!any_numbered); | |
412 | } | |
413 | gcc_assert (argno < PP_NL_ARGMAX); | |
414 | gcc_assert (!formatters[argno]); | |
415 | formatters[argno] = &args[chunk]; | |
416 | do | |
417 | { | |
418 | obstack_1grow (&buffer->chunk_obstack, *p); | |
419 | p++; | |
420 | } | |
421 | while (strchr ("qwl+#", p[-1])); | |
422 | ||
423 | if (p[-1] == '.') | |
424 | { | |
425 | /* We handle '%.Ns' and '%.*s' or '%M$.*N$s' | |
426 | (where M == N + 1). */ | |
427 | if (ISDIGIT (*p)) | |
428 | { | |
429 | do | |
430 | { | |
431 | obstack_1grow (&buffer->chunk_obstack, *p); | |
432 | p++; | |
433 | } | |
434 | while (ISDIGIT (p[-1])); | |
435 | gcc_assert (p[-1] == 's'); | |
436 | } | |
437 | else | |
438 | { | |
439 | gcc_assert (*p == '*'); | |
440 | obstack_1grow (&buffer->chunk_obstack, '*'); | |
441 | p++; | |
442 | ||
443 | if (ISDIGIT (*p)) | |
444 | { | |
445 | char *end; | |
446 | unsigned int argno2 = strtoul (p, &end, 10) - 1; | |
447 | p = end; | |
448 | gcc_assert (argno2 == argno - 1); | |
449 | gcc_assert (!any_unnumbered); | |
450 | gcc_assert (*p == '$'); | |
451 | ||
452 | p++; | |
453 | formatters[argno2] = formatters[argno]; | |
454 | } | |
455 | else | |
456 | { | |
457 | gcc_assert (!any_numbered); | |
458 | formatters[argno+1] = formatters[argno]; | |
459 | curarg++; | |
460 | } | |
461 | gcc_assert (*p == 's'); | |
462 | obstack_1grow (&buffer->chunk_obstack, 's'); | |
463 | p++; | |
464 | } | |
465 | } | |
466 | if (*p == '\0') | |
b6fe0bb8 GDR |
467 | break; |
468 | ||
39ce81c9 ZW |
469 | obstack_1grow (&buffer->chunk_obstack, '\0'); |
470 | gcc_assert (chunk < PP_NL_ARGMAX * 2); | |
471 | args[chunk++] = XOBFINISH (&buffer->chunk_obstack, const char *); | |
472 | } | |
473 | ||
474 | obstack_1grow (&buffer->chunk_obstack, '\0'); | |
475 | gcc_assert (chunk < PP_NL_ARGMAX * 2); | |
476 | args[chunk++] = XOBFINISH (&buffer->chunk_obstack, const char *); | |
477 | args[chunk] = 0; | |
b8698a0f | 478 | |
39ce81c9 ZW |
479 | /* Set output to the argument obstack, and switch line-wrapping and |
480 | prefixing off. */ | |
481 | buffer->obstack = &buffer->chunk_obstack; | |
482 | old_wrapping_mode = pp_set_verbatim_wrapping (pp); | |
483 | ||
484 | /* Second phase. Replace each formatter with the formatted text it | |
485 | corresponds to. */ | |
486 | ||
487 | for (argno = 0; formatters[argno]; argno++) | |
488 | { | |
489 | int precision = 0; | |
490 | bool wide = false; | |
491 | bool plus = false; | |
492 | bool hash = false; | |
493 | bool quote = false; | |
494 | ||
495 | /* We do not attempt to enforce any ordering on the modifier | |
496 | characters. */ | |
497 | ||
498 | for (p = *formatters[argno];; p++) | |
a668adb2 | 499 | { |
39ce81c9 ZW |
500 | switch (*p) |
501 | { | |
502 | case 'q': | |
503 | gcc_assert (!quote); | |
504 | quote = true; | |
505 | continue; | |
506 | ||
507 | case '+': | |
508 | gcc_assert (!plus); | |
509 | plus = true; | |
510 | continue; | |
511 | ||
512 | case '#': | |
513 | gcc_assert (!hash); | |
514 | hash = true; | |
515 | continue; | |
516 | ||
517 | case 'w': | |
518 | gcc_assert (!wide); | |
519 | wide = true; | |
520 | continue; | |
521 | ||
522 | case 'l': | |
523 | /* We don't support precision beyond that of "long long". */ | |
524 | gcc_assert (precision < 2); | |
525 | precision++; | |
526 | continue; | |
527 | } | |
528 | break; | |
a668adb2 | 529 | } |
39ce81c9 ZW |
530 | |
531 | gcc_assert (!wide || precision == 0); | |
532 | ||
533 | if (quote) | |
4b84d650 JJ |
534 | { |
535 | pp_string (pp, open_quote); | |
536 | pp_string (pp, colorize_start (pp_show_color (pp), "quote")); | |
537 | } | |
39ce81c9 ZW |
538 | |
539 | switch (*p) | |
b6fe0bb8 | 540 | { |
4b84d650 JJ |
541 | case 'r': |
542 | pp_string (pp, colorize_start (pp_show_color (pp), | |
543 | va_arg (*text->args_ptr, | |
544 | const char *))); | |
545 | break; | |
546 | ||
b6fe0bb8 GDR |
547 | case 'c': |
548 | pp_character (pp, va_arg (*text->args_ptr, int)); | |
549 | break; | |
550 | ||
551 | case 'd': | |
552 | case 'i': | |
39ce81c9 ZW |
553 | if (wide) |
554 | pp_wide_integer (pp, va_arg (*text->args_ptr, HOST_WIDE_INT)); | |
555 | else | |
556 | pp_integer_with_precision | |
557 | (pp, *text->args_ptr, precision, int, "d"); | |
b6fe0bb8 GDR |
558 | break; |
559 | ||
560 | case 'o': | |
39ce81c9 ZW |
561 | if (wide) |
562 | pp_scalar (pp, "%" HOST_WIDE_INT_PRINT "o", | |
563 | va_arg (*text->args_ptr, unsigned HOST_WIDE_INT)); | |
564 | else | |
565 | pp_integer_with_precision | |
566 | (pp, *text->args_ptr, precision, unsigned, "o"); | |
b6fe0bb8 GDR |
567 | break; |
568 | ||
569 | case 's': | |
570 | pp_string (pp, va_arg (*text->args_ptr, const char *)); | |
571 | break; | |
572 | ||
39ce81c9 ZW |
573 | case 'p': |
574 | pp_pointer (pp, va_arg (*text->args_ptr, void *)); | |
575 | break; | |
b6fe0bb8 GDR |
576 | |
577 | case 'u': | |
39ce81c9 ZW |
578 | if (wide) |
579 | pp_scalar (pp, HOST_WIDE_INT_PRINT_UNSIGNED, | |
580 | va_arg (*text->args_ptr, unsigned HOST_WIDE_INT)); | |
581 | else | |
582 | pp_integer_with_precision | |
583 | (pp, *text->args_ptr, precision, unsigned, "u"); | |
b6fe0bb8 GDR |
584 | break; |
585 | ||
586 | case 'x': | |
39ce81c9 ZW |
587 | if (wide) |
588 | pp_scalar (pp, HOST_WIDE_INT_PRINT_HEX, | |
589 | va_arg (*text->args_ptr, unsigned HOST_WIDE_INT)); | |
590 | else | |
591 | pp_integer_with_precision | |
592 | (pp, *text->args_ptr, precision, unsigned, "x"); | |
b6fe0bb8 GDR |
593 | break; |
594 | ||
b6fe0bb8 GDR |
595 | case '.': |
596 | { | |
597 | int n; | |
598 | const char *s; | |
d5706a1e | 599 | |
39ce81c9 ZW |
600 | /* We handle '%.Ns' and '%.*s' or '%M$.*N$s' |
601 | (where M == N + 1). The format string should be verified | |
602 | already from the first phase. */ | |
603 | p++; | |
604 | if (ISDIGIT (*p)) | |
605 | { | |
606 | char *end; | |
607 | n = strtoul (p, &end, 10); | |
608 | p = end; | |
609 | gcc_assert (*p == 's'); | |
610 | } | |
611 | else | |
612 | { | |
613 | gcc_assert (*p == '*'); | |
614 | p++; | |
615 | gcc_assert (*p == 's'); | |
616 | n = va_arg (*text->args_ptr, int); | |
617 | ||
618 | /* This consumes a second entry in the formatters array. */ | |
619 | gcc_assert (formatters[argno] == formatters[argno+1]); | |
620 | argno++; | |
621 | } | |
622 | ||
b6fe0bb8 GDR |
623 | s = va_arg (*text->args_ptr, const char *); |
624 | pp_append_text (pp, s, s + n); | |
625 | } | |
626 | break; | |
627 | ||
628 | default: | |
0e61db61 NS |
629 | { |
630 | bool ok; | |
39ce81c9 | 631 | |
0e61db61 | 632 | gcc_assert (pp_format_decoder (pp)); |
39ce81c9 ZW |
633 | ok = pp_format_decoder (pp) (pp, text, p, |
634 | precision, wide, plus, hash); | |
0e61db61 NS |
635 | gcc_assert (ok); |
636 | } | |
b6fe0bb8 | 637 | } |
39ce81c9 ZW |
638 | |
639 | if (quote) | |
4b84d650 JJ |
640 | { |
641 | pp_string (pp, colorize_stop (pp_show_color (pp))); | |
642 | pp_string (pp, close_quote); | |
643 | } | |
39ce81c9 ZW |
644 | |
645 | obstack_1grow (&buffer->chunk_obstack, '\0'); | |
646 | *formatters[argno] = XOBFINISH (&buffer->chunk_obstack, const char *); | |
b6fe0bb8 | 647 | } |
39ce81c9 | 648 | |
b2b29377 MM |
649 | if (CHECKING_P) |
650 | for (; argno < PP_NL_ARGMAX; argno++) | |
651 | gcc_assert (!formatters[argno]); | |
39ce81c9 ZW |
652 | |
653 | /* Revert to normal obstack and wrapping mode. */ | |
654 | buffer->obstack = &buffer->formatted_obstack; | |
655 | buffer->line_length = 0; | |
656 | pp_wrapping_mode (pp) = old_wrapping_mode; | |
657 | pp_clear_state (pp); | |
658 | } | |
659 | ||
660 | /* Format of a message pointed to by TEXT. */ | |
661 | void | |
b066401f | 662 | pp_output_formatted_text (pretty_printer *pp) |
39ce81c9 ZW |
663 | { |
664 | unsigned int chunk; | |
665 | output_buffer *buffer = pp_buffer (pp); | |
666 | struct chunk_info *chunk_array = buffer->cur_chunk_array; | |
667 | const char **args = chunk_array->args; | |
668 | ||
669 | gcc_assert (buffer->obstack == &buffer->formatted_obstack); | |
670 | gcc_assert (buffer->line_length == 0); | |
671 | ||
b066401f | 672 | /* This is a third phase, first 2 phases done in pp_format_args. |
39ce81c9 ZW |
673 | Now we actually print it. */ |
674 | for (chunk = 0; args[chunk]; chunk++) | |
675 | pp_string (pp, args[chunk]); | |
676 | ||
677 | /* Deallocate the chunk structure and everything after it (i.e. the | |
678 | associated series of formatted strings). */ | |
679 | buffer->cur_chunk_array = chunk_array->prev; | |
680 | obstack_free (&buffer->chunk_obstack, chunk_array); | |
b6fe0bb8 GDR |
681 | } |
682 | ||
683 | /* Helper subroutine of output_verbatim and verbatim. Do the appropriate | |
684 | settings needed by BUFFER for a verbatim formatting. */ | |
685 | void | |
b066401f | 686 | pp_format_verbatim (pretty_printer *pp, text_info *text) |
b6fe0bb8 | 687 | { |
b6fe0bb8 | 688 | /* Set verbatim mode. */ |
39ce81c9 ZW |
689 | pp_wrapping_mode_t oldmode = pp_set_verbatim_wrapping (pp); |
690 | ||
b6fe0bb8 | 691 | /* Do the actual formatting. */ |
39ce81c9 ZW |
692 | pp_format (pp, text); |
693 | pp_output_formatted_text (pp); | |
694 | ||
b6fe0bb8 | 695 | /* Restore previous settings. */ |
39ce81c9 | 696 | pp_wrapping_mode (pp) = oldmode; |
b6fe0bb8 GDR |
697 | } |
698 | ||
48749dbc MLI |
699 | /* Flush the content of BUFFER onto the attached stream. This |
700 | function does nothing unless pp->output_buffer->flush_p. */ | |
b6fe0bb8 | 701 | void |
b066401f | 702 | pp_flush (pretty_printer *pp) |
b6fe0bb8 | 703 | { |
48749dbc MLI |
704 | pp_clear_state (pp); |
705 | if (!pp->buffer->flush_p) | |
706 | return; | |
b6fe0bb8 | 707 | pp_write_text_to_stream (pp); |
48749dbc MLI |
708 | fflush (pp_buffer (pp)->stream); |
709 | } | |
710 | ||
711 | /* Flush the content of BUFFER onto the attached stream independently | |
712 | of the value of pp->output_buffer->flush_p. */ | |
713 | void | |
714 | pp_really_flush (pretty_printer *pp) | |
715 | { | |
b6fe0bb8 | 716 | pp_clear_state (pp); |
48749dbc | 717 | pp_write_text_to_stream (pp); |
025311c4 | 718 | fflush (pp_buffer (pp)->stream); |
b6fe0bb8 GDR |
719 | } |
720 | ||
721 | /* Sets the number of maximum characters per line PRETTY-PRINTER can | |
722 | output in line-wrapping mode. A LENGTH value 0 suppresses | |
723 | line-wrapping. */ | |
724 | void | |
b066401f | 725 | pp_set_line_maximum_length (pretty_printer *pp, int length) |
b6fe0bb8 GDR |
726 | { |
727 | pp_line_cutoff (pp) = length; | |
728 | pp_set_real_maximum_length (pp); | |
729 | } | |
730 | ||
731 | /* Clear PRETTY-PRINTER output area text info. */ | |
732 | void | |
b066401f | 733 | pp_clear_output_area (pretty_printer *pp) |
b6fe0bb8 | 734 | { |
025311c4 GDR |
735 | obstack_free (pp_buffer (pp)->obstack, |
736 | obstack_base (pp_buffer (pp)->obstack)); | |
737 | pp_buffer (pp)->line_length = 0; | |
b6fe0bb8 GDR |
738 | } |
739 | ||
740 | /* Set PREFIX for PRETTY-PRINTER. */ | |
741 | void | |
b066401f | 742 | pp_set_prefix (pretty_printer *pp, const char *prefix) |
b6fe0bb8 GDR |
743 | { |
744 | pp->prefix = prefix; | |
745 | pp_set_real_maximum_length (pp); | |
746 | pp->emitted_prefix = false; | |
747 | pp_indentation (pp) = 0; | |
748 | } | |
749 | ||
750 | /* Free PRETTY-PRINTER's prefix, a previously malloc()'d string. */ | |
751 | void | |
b066401f | 752 | pp_destroy_prefix (pretty_printer *pp) |
b6fe0bb8 GDR |
753 | { |
754 | if (pp->prefix != NULL) | |
755 | { | |
b1d5455a | 756 | free (CONST_CAST (char *, pp->prefix)); |
b6fe0bb8 GDR |
757 | pp->prefix = NULL; |
758 | } | |
759 | } | |
760 | ||
761 | /* Write out PRETTY-PRINTER's prefix. */ | |
762 | void | |
b066401f | 763 | pp_emit_prefix (pretty_printer *pp) |
b6fe0bb8 GDR |
764 | { |
765 | if (pp->prefix != NULL) | |
766 | { | |
767 | switch (pp_prefixing_rule (pp)) | |
768 | { | |
769 | default: | |
770 | case DIAGNOSTICS_SHOW_PREFIX_NEVER: | |
771 | break; | |
772 | ||
773 | case DIAGNOSTICS_SHOW_PREFIX_ONCE: | |
774 | if (pp->emitted_prefix) | |
775 | { | |
b066401f | 776 | pp_indent (pp); |
b6fe0bb8 GDR |
777 | break; |
778 | } | |
779 | pp_indentation (pp) += 3; | |
780 | /* Fall through. */ | |
781 | ||
782 | case DIAGNOSTICS_SHOW_PREFIX_EVERY_LINE: | |
783 | { | |
784 | int prefix_length = strlen (pp->prefix); | |
785 | pp_append_r (pp, pp->prefix, prefix_length); | |
786 | pp->emitted_prefix = true; | |
787 | } | |
788 | break; | |
789 | } | |
790 | } | |
791 | } | |
792 | ||
793 | /* Construct a PRETTY-PRINTER with PREFIX and of MAXIMUM_LENGTH | |
794 | characters per line. */ | |
da6ca2b5 GDR |
795 | |
796 | pretty_printer::pretty_printer (const char *p, int l) | |
797 | : buffer (new (XCNEW (output_buffer)) output_buffer ()), | |
798 | prefix (), | |
799 | padding (pp_none), | |
800 | maximum_length (), | |
801 | indent_skip (), | |
802 | wrapping (), | |
803 | format_decoder (), | |
804 | emitted_prefix (), | |
805 | need_newline (), | |
c3284718 | 806 | translate_identifiers (true), |
da6ca2b5 | 807 | show_color () |
b6fe0bb8 | 808 | { |
da6ca2b5 GDR |
809 | pp_line_cutoff (this) = l; |
810 | /* By default, we emit prefixes once per message. */ | |
811 | pp_prefixing_rule (this) = DIAGNOSTICS_SHOW_PREFIX_ONCE; | |
812 | pp_set_prefix (this, p); | |
b6fe0bb8 GDR |
813 | } |
814 | ||
025311c4 GDR |
815 | pretty_printer::~pretty_printer () |
816 | { | |
817 | buffer->~output_buffer (); | |
818 | XDELETE (buffer); | |
819 | } | |
820 | ||
b6fe0bb8 GDR |
821 | /* Append a string delimited by START and END to the output area of |
822 | PRETTY-PRINTER. No line wrapping is done. However, if beginning a | |
823 | new line then emit PRETTY-PRINTER's prefix and skip any leading | |
824 | whitespace if appropriate. The caller must ensure that it is | |
825 | safe to do so. */ | |
826 | void | |
b066401f | 827 | pp_append_text (pretty_printer *pp, const char *start, const char *end) |
b6fe0bb8 GDR |
828 | { |
829 | /* Emit prefix and skip whitespace if we're starting a new line. */ | |
025311c4 | 830 | if (pp_buffer (pp)->line_length == 0) |
b6fe0bb8 GDR |
831 | { |
832 | pp_emit_prefix (pp); | |
833 | if (pp_is_wrapping_line (pp)) | |
834 | while (start != end && *start == ' ') | |
835 | ++start; | |
836 | } | |
837 | pp_append_r (pp, start, end - start); | |
838 | } | |
839 | ||
840 | /* Finishes constructing a NULL-terminated character string representing | |
841 | the PRETTY-PRINTED text. */ | |
842 | const char * | |
b066401f | 843 | pp_formatted_text (pretty_printer *pp) |
b6fe0bb8 | 844 | { |
c4100eae | 845 | return output_buffer_formatted_text (pp_buffer (pp)); |
b6fe0bb8 GDR |
846 | } |
847 | ||
848 | /* Return a pointer to the last character emitted in PRETTY-PRINTER's | |
849 | output area. A NULL pointer means no character available. */ | |
850 | const char * | |
b066401f | 851 | pp_last_position_in_text (const pretty_printer *pp) |
b6fe0bb8 | 852 | { |
c4100eae | 853 | return output_buffer_last_position_in_text (pp_buffer (pp)); |
b6fe0bb8 GDR |
854 | } |
855 | ||
856 | /* Return the amount of characters PRETTY-PRINTER can accept to | |
ba228239 | 857 | make a full line. Meaningful only in line-wrapping mode. */ |
b6fe0bb8 | 858 | int |
b066401f | 859 | pp_remaining_character_count_for_line (pretty_printer *pp) |
b6fe0bb8 | 860 | { |
025311c4 | 861 | return pp->maximum_length - pp_buffer (pp)->line_length; |
b6fe0bb8 GDR |
862 | } |
863 | ||
864 | ||
865 | /* Format a message into BUFFER a la printf. */ | |
866 | void | |
867 | pp_printf (pretty_printer *pp, const char *msg, ...) | |
868 | { | |
869 | text_info text; | |
870 | va_list ap; | |
871 | ||
872 | va_start (ap, msg); | |
873 | text.err_no = errno; | |
874 | text.args_ptr = ≈ | |
875 | text.format_spec = msg; | |
39ce81c9 ZW |
876 | pp_format (pp, &text); |
877 | pp_output_formatted_text (pp); | |
b6fe0bb8 GDR |
878 | va_end (ap); |
879 | } | |
880 | ||
881 | ||
882 | /* Output MESSAGE verbatim into BUFFER. */ | |
883 | void | |
884 | pp_verbatim (pretty_printer *pp, const char *msg, ...) | |
885 | { | |
886 | text_info text; | |
887 | va_list ap; | |
888 | ||
889 | va_start (ap, msg); | |
890 | text.err_no = errno; | |
891 | text.args_ptr = ≈ | |
892 | text.format_spec = msg; | |
893 | pp_format_verbatim (pp, &text); | |
894 | va_end (ap); | |
895 | } | |
896 | ||
897 | ||
898 | ||
899 | /* Have PRETTY-PRINTER start a new line. */ | |
900 | void | |
b066401f | 901 | pp_newline (pretty_printer *pp) |
b6fe0bb8 | 902 | { |
025311c4 | 903 | obstack_1grow (pp_buffer (pp)->obstack, '\n'); |
c4669594 | 904 | pp_needs_newline (pp) = false; |
025311c4 | 905 | pp_buffer (pp)->line_length = 0; |
b6fe0bb8 GDR |
906 | } |
907 | ||
908 | /* Have PRETTY-PRINTER add a CHARACTER. */ | |
909 | void | |
b066401f | 910 | pp_character (pretty_printer *pp, int c) |
b6fe0bb8 GDR |
911 | { |
912 | if (pp_is_wrapping_line (pp) | |
913 | && pp_remaining_character_count_for_line (pp) <= 0) | |
914 | { | |
915 | pp_newline (pp); | |
916 | if (ISSPACE (c)) | |
917 | return; | |
918 | } | |
025311c4 GDR |
919 | obstack_1grow (pp_buffer (pp)->obstack, c); |
920 | ++pp_buffer (pp)->line_length; | |
b6fe0bb8 GDR |
921 | } |
922 | ||
923 | /* Append a STRING to the output area of PRETTY-PRINTER; the STRING may | |
924 | be line-wrapped if in appropriate mode. */ | |
925 | void | |
b066401f | 926 | pp_string (pretty_printer *pp, const char *str) |
b6fe0bb8 | 927 | { |
41d9f1e0 MLI |
928 | gcc_checking_assert (str); |
929 | pp_maybe_wrap_text (pp, str, str + strlen (str)); | |
b6fe0bb8 GDR |
930 | } |
931 | ||
471854f8 | 932 | /* Maybe print out a whitespace if needed. */ |
b6fe0bb8 | 933 | |
b9b44fb9 | 934 | void |
b066401f | 935 | pp_maybe_space (pretty_printer *pp) |
b9b44fb9 | 936 | { |
b066401f | 937 | if (pp->padding != pp_none) |
b9b44fb9 GDR |
938 | { |
939 | pp_space (pp); | |
b066401f | 940 | pp->padding = pp_none; |
b9b44fb9 GDR |
941 | } |
942 | } | |
0fc80001 GDR |
943 | |
944 | // Add a newline to the pretty printer PP and flush formatted text. | |
945 | ||
946 | void | |
947 | pp_newline_and_flush (pretty_printer *pp) | |
948 | { | |
949 | pp_newline (pp); | |
950 | pp_flush (pp); | |
951 | pp_needs_newline (pp) = false; | |
952 | } | |
953 | ||
954 | // Add a newline to the pretty printer PP, followed by indentation. | |
955 | ||
956 | void | |
957 | pp_newline_and_indent (pretty_printer *pp, int n) | |
958 | { | |
959 | pp_indentation (pp) += n; | |
960 | pp_newline (pp); | |
961 | pp_indent (pp); | |
962 | pp_needs_newline (pp) = false; | |
963 | } | |
964 | ||
965 | // Add separator C, followed by a single whitespace. | |
966 | ||
967 | void | |
968 | pp_separate_with (pretty_printer *pp, char c) | |
969 | { | |
970 | pp_character (pp, c); | |
971 | pp_space (pp); | |
972 | } | |
973 | ||
a3af5087 JM |
974 | \f |
975 | /* The string starting at P has LEN (at least 1) bytes left; if they | |
976 | start with a valid UTF-8 sequence, return the length of that | |
977 | sequence and set *VALUE to the value of that sequence, and | |
978 | otherwise return 0 and set *VALUE to (unsigned int) -1. */ | |
979 | ||
980 | static int | |
981 | decode_utf8_char (const unsigned char *p, size_t len, unsigned int *value) | |
982 | { | |
983 | unsigned int t = *p; | |
984 | ||
985 | if (len == 0) | |
986 | abort (); | |
987 | if (t & 0x80) | |
988 | { | |
989 | size_t utf8_len = 0; | |
990 | unsigned int ch; | |
991 | size_t i; | |
992 | for (t = *p; t & 0x80; t <<= 1) | |
993 | utf8_len++; | |
994 | ||
995 | if (utf8_len > len || utf8_len < 2 || utf8_len > 6) | |
996 | { | |
997 | *value = (unsigned int) -1; | |
998 | return 0; | |
999 | } | |
1000 | ch = *p & ((1 << (7 - utf8_len)) - 1); | |
1001 | for (i = 1; i < utf8_len; i++) | |
1002 | { | |
1003 | unsigned int u = p[i]; | |
1004 | if ((u & 0xC0) != 0x80) | |
1005 | { | |
1006 | *value = (unsigned int) -1; | |
1007 | return 0; | |
1008 | } | |
1009 | ch = (ch << 6) | (u & 0x3F); | |
1010 | } | |
1011 | if ( (ch <= 0x7F && utf8_len > 1) | |
1012 | || (ch <= 0x7FF && utf8_len > 2) | |
1013 | || (ch <= 0xFFFF && utf8_len > 3) | |
1014 | || (ch <= 0x1FFFFF && utf8_len > 4) | |
1015 | || (ch <= 0x3FFFFFF && utf8_len > 5) | |
1016 | || (ch >= 0xD800 && ch <= 0xDFFF)) | |
1017 | { | |
1018 | *value = (unsigned int) -1; | |
1019 | return 0; | |
1020 | } | |
1021 | *value = ch; | |
1022 | return utf8_len; | |
1023 | } | |
1024 | else | |
1025 | { | |
1026 | *value = t; | |
1027 | return 1; | |
1028 | } | |
1029 | } | |
1030 | ||
ab9b814d JM |
1031 | /* Allocator for identifier_to_locale and corresponding function to |
1032 | free memory. */ | |
1033 | ||
1034 | void *(*identifier_to_locale_alloc) (size_t) = xmalloc; | |
1035 | void (*identifier_to_locale_free) (void *) = free; | |
1036 | ||
a3af5087 JM |
1037 | /* Given IDENT, an identifier in the internal encoding, return a |
1038 | version of IDENT suitable for diagnostics in the locale character | |
ab9b814d JM |
1039 | set: either IDENT itself, or a string, allocated using |
1040 | identifier_to_locale_alloc, converted to the locale character set | |
1041 | and using escape sequences if not representable in the locale | |
1042 | character set or containing control characters or invalid byte | |
1043 | sequences. Existing backslashes in IDENT are not doubled, so the | |
1044 | result may not uniquely specify the contents of an arbitrary byte | |
1045 | sequence identifier. */ | |
a3af5087 JM |
1046 | |
1047 | const char * | |
1048 | identifier_to_locale (const char *ident) | |
1049 | { | |
1050 | const unsigned char *uid = (const unsigned char *) ident; | |
1051 | size_t idlen = strlen (ident); | |
1052 | bool valid_printable_utf8 = true; | |
1053 | bool all_ascii = true; | |
1054 | size_t i; | |
1055 | ||
1056 | for (i = 0; i < idlen;) | |
1057 | { | |
1058 | unsigned int c; | |
1059 | size_t utf8_len = decode_utf8_char (&uid[i], idlen - i, &c); | |
1060 | if (utf8_len == 0 || c <= 0x1F || (c >= 0x7F && c <= 0x9F)) | |
1061 | { | |
1062 | valid_printable_utf8 = false; | |
1063 | break; | |
1064 | } | |
1065 | if (utf8_len > 1) | |
1066 | all_ascii = false; | |
1067 | i += utf8_len; | |
1068 | } | |
1069 | ||
1070 | /* If IDENT contains invalid UTF-8 sequences (which may occur with | |
1071 | attributes putting arbitrary byte sequences in identifiers), or | |
1072 | control characters, we use octal escape sequences for all bytes | |
1073 | outside printable ASCII. */ | |
1074 | if (!valid_printable_utf8) | |
1075 | { | |
ab9b814d | 1076 | char *ret = (char *) identifier_to_locale_alloc (4 * idlen + 1); |
a3af5087 JM |
1077 | char *p = ret; |
1078 | for (i = 0; i < idlen; i++) | |
1079 | { | |
1080 | if (uid[i] > 0x1F && uid[i] < 0x7F) | |
1081 | *p++ = uid[i]; | |
1082 | else | |
1083 | { | |
1084 | sprintf (p, "\\%03o", uid[i]); | |
1085 | p += 4; | |
1086 | } | |
1087 | } | |
1088 | *p = 0; | |
1089 | return ret; | |
1090 | } | |
1091 | ||
1092 | /* Otherwise, if it is valid printable ASCII, or printable UTF-8 | |
1093 | with the locale character set being UTF-8, IDENT is used. */ | |
1094 | if (all_ascii || locale_utf8) | |
1095 | return ident; | |
1096 | ||
1097 | /* Otherwise IDENT is converted to the locale character set if | |
1098 | possible. */ | |
1099 | #if defined ENABLE_NLS && defined HAVE_LANGINFO_CODESET && HAVE_ICONV | |
1100 | if (locale_encoding != NULL) | |
1101 | { | |
1102 | iconv_t cd = iconv_open (locale_encoding, "UTF-8"); | |
1103 | bool conversion_ok = true; | |
1104 | char *ret = NULL; | |
1105 | if (cd != (iconv_t) -1) | |
1106 | { | |
1107 | size_t ret_alloc = 4 * idlen + 1; | |
1108 | for (;;) | |
1109 | { | |
1110 | /* Repeat the whole conversion process as needed with | |
1111 | larger buffers so non-reversible transformations can | |
1112 | always be detected. */ | |
1113 | ICONV_CONST char *inbuf = CONST_CAST (char *, ident); | |
1114 | char *outbuf; | |
1115 | size_t inbytesleft = idlen; | |
1116 | size_t outbytesleft = ret_alloc - 1; | |
1117 | size_t iconv_ret; | |
1118 | ||
ab9b814d | 1119 | ret = (char *) identifier_to_locale_alloc (ret_alloc); |
a3af5087 JM |
1120 | outbuf = ret; |
1121 | ||
1122 | if (iconv (cd, 0, 0, 0, 0) == (size_t) -1) | |
1123 | { | |
1124 | conversion_ok = false; | |
1125 | break; | |
1126 | } | |
1127 | ||
1128 | iconv_ret = iconv (cd, &inbuf, &inbytesleft, | |
1129 | &outbuf, &outbytesleft); | |
1130 | if (iconv_ret == (size_t) -1 || inbytesleft != 0) | |
1131 | { | |
1132 | if (errno == E2BIG) | |
1133 | { | |
1134 | ret_alloc *= 2; | |
ab9b814d | 1135 | identifier_to_locale_free (ret); |
a3af5087 JM |
1136 | ret = NULL; |
1137 | continue; | |
1138 | } | |
1139 | else | |
1140 | { | |
1141 | conversion_ok = false; | |
1142 | break; | |
1143 | } | |
1144 | } | |
1145 | else if (iconv_ret != 0) | |
1146 | { | |
1147 | conversion_ok = false; | |
1148 | break; | |
1149 | } | |
1150 | /* Return to initial shift state. */ | |
1151 | if (iconv (cd, 0, 0, &outbuf, &outbytesleft) == (size_t) -1) | |
1152 | { | |
1153 | if (errno == E2BIG) | |
1154 | { | |
1155 | ret_alloc *= 2; | |
ab9b814d | 1156 | identifier_to_locale_free (ret); |
a3af5087 JM |
1157 | ret = NULL; |
1158 | continue; | |
1159 | } | |
1160 | else | |
1161 | { | |
1162 | conversion_ok = false; | |
1163 | break; | |
1164 | } | |
1165 | } | |
1166 | *outbuf = 0; | |
1167 | break; | |
1168 | } | |
1169 | iconv_close (cd); | |
1170 | if (conversion_ok) | |
1171 | return ret; | |
1172 | } | |
1173 | } | |
1174 | #endif | |
1175 | ||
1176 | /* Otherwise, convert non-ASCII characters in IDENT to UCNs. */ | |
1177 | { | |
ab9b814d | 1178 | char *ret = (char *) identifier_to_locale_alloc (10 * idlen + 1); |
a3af5087 JM |
1179 | char *p = ret; |
1180 | for (i = 0; i < idlen;) | |
1181 | { | |
1182 | unsigned int c; | |
1183 | size_t utf8_len = decode_utf8_char (&uid[i], idlen - i, &c); | |
1184 | if (utf8_len == 1) | |
1185 | *p++ = uid[i]; | |
1186 | else | |
1187 | { | |
1188 | sprintf (p, "\\U%08x", c); | |
1189 | p += 10; | |
1190 | } | |
1191 | i += utf8_len; | |
1192 | } | |
1193 | *p = 0; | |
1194 | return ret; | |
1195 | } | |
1196 | } |