0.2.2
by Keith Packard
Import upstream version 2.8.0 |
1 |
/*
|
2 |
* Copyright © 2008,2009 Red Hat, Inc.
|
|
3 |
*
|
|
4 |
* Red Hat Author(s): Behdad Esfahbod
|
|
5 |
*
|
|
6 |
* Permission to use, copy, modify, distribute, and sell this software and its
|
|
7 |
* documentation for any purpose is hereby granted without fee, provided that
|
|
8 |
* the above copyright notice appear in all copies and that both that
|
|
9 |
* copyright notice and this permission notice appear in supporting
|
|
10 |
* documentation, and that the name of Keith Packard not be used in
|
|
11 |
* advertising or publicity pertaining to distribution of the software without
|
|
12 |
* specific, written prior permission. Keith Packard makes no
|
|
13 |
* representations about the suitability of this software for any purpose. It
|
|
14 |
* is provided "as is" without express or implied warranty.
|
|
15 |
*
|
|
16 |
* THE AUTHOR(S) DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
|
|
17 |
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
|
|
18 |
* EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY SPECIAL, INDIRECT OR
|
|
19 |
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
|
|
20 |
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
|
|
21 |
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
|
|
22 |
* PERFORMANCE OF THIS SOFTWARE.
|
|
23 |
*/
|
|
24 |
||
25 |
#include "fcint.h" |
|
26 |
#include <stdlib.h> |
|
27 |
#include <string.h> |
|
28 |
#include <stdarg.h> |
|
29 |
||
30 |
||
31 |
/* The language is documented in doc/fcformat.fncs
|
|
32 |
* These are the features implemented:
|
|
33 |
*
|
|
34 |
* simple %{elt}
|
|
35 |
* width %width{elt}
|
|
36 |
* index %{elt[idx]}
|
|
37 |
* name= %{elt=}
|
|
38 |
* :name= %{:elt}
|
|
39 |
* default %{elt:-word}
|
|
40 |
* count %{#elt}
|
|
41 |
* subexpr %{{expr}}
|
|
42 |
* filter-out %{-elt1,elt2,elt3{expr}}
|
|
43 |
* filter-in %{+elt1,elt2,elt3{expr}}
|
|
44 |
* conditional %{?elt1,elt2,!elt3{}{}}
|
|
45 |
* enumerate %{[]elt1,elt2{expr}}
|
|
46 |
* langset langset enumeration using the same syntax
|
|
47 |
* builtin %{=blt}
|
|
48 |
* convert %{elt|conv1|conv2|conv3}
|
|
49 |
*
|
|
50 |
* converters:
|
|
51 |
* basename FcStrBasename
|
|
52 |
* dirname FcStrDirname
|
|
53 |
* downcase FcStrDowncase
|
|
54 |
* shescape
|
|
55 |
* cescape
|
|
56 |
* xmlescape
|
|
57 |
* delete delete chars
|
|
58 |
* escape escape chars
|
|
59 |
* translate translate chars
|
|
60 |
*
|
|
61 |
* builtins:
|
|
62 |
* unparse FcNameUnparse
|
|
63 |
* fcmatch fc-match default
|
|
64 |
* fclist fc-list default
|
|
65 |
* pkgkit PackageKit package tag format
|
|
66 |
*
|
|
67 |
*
|
|
68 |
* Some ideas for future syntax extensions:
|
|
69 |
*
|
|
70 |
* - verbose builtin that is like FcPatternPrint
|
|
71 |
* - allow indexing subexprs using '%{[idx]elt1,elt2{subexpr}}'
|
|
72 |
* - conditional/filtering/deletion on binding (using '(w)'/'(s)'/'(=)' notation)
|
|
73 |
*/
|
|
74 |
||
75 |
||
76 |
#define FCMATCH_FORMAT "%{file:-<unknown filename>|basename}: \"%{family[0]:-<unknown family>}\" \"%{style[0]:-<unknown style>}\""
|
|
77 |
#define FCLIST_FORMAT "%{?file{%{file}: }}%{=unparse}"
|
|
78 |
#define PKGKIT_FORMAT "%{[]family{font(%{family|downcase|delete( )})\n}}%{[]lang{font(:lang=%{lang|downcase|translate(_,-)})\n}}"
|
|
79 |
||
80 |
||
81 |
static void |
|
82 |
message (const char *fmt, ...) |
|
83 |
{
|
|
84 |
va_list args; |
|
85 |
va_start (args, fmt); |
|
86 |
fprintf (stderr, "Fontconfig: Pattern format error: "); |
|
87 |
vfprintf (stderr, fmt, args); |
|
88 |
fprintf (stderr, ".\n"); |
|
89 |
va_end (args); |
|
90 |
}
|
|
91 |
||
92 |
||
93 |
typedef struct _FcFormatContext |
|
94 |
{
|
|
95 |
const FcChar8 *format_orig; |
|
96 |
const FcChar8 *format; |
|
97 |
int format_len; |
|
98 |
FcChar8 *word; |
|
99 |
FcBool word_allocated; |
|
100 |
} FcFormatContext; |
|
101 |
||
102 |
static FcBool |
|
103 |
FcFormatContextInit (FcFormatContext *c, |
|
104 |
const FcChar8 *format, |
|
105 |
FcChar8 *scratch, |
|
106 |
int scratch_len) |
|
107 |
{
|
|
108 |
c->format_orig = c->format = format; |
|
109 |
c->format_len = strlen ((const char *) format); |
|
110 |
||
111 |
if (c->format_len < scratch_len) |
|
112 |
{
|
|
113 |
c->word = scratch; |
|
114 |
c->word_allocated = FcFalse; |
|
115 |
}
|
|
116 |
else
|
|
117 |
{
|
|
118 |
c->word = malloc (c->format_len + 1); |
|
119 |
c->word_allocated = FcTrue; |
|
120 |
}
|
|
121 |
||
122 |
return c->word != NULL; |
|
123 |
}
|
|
124 |
||
125 |
static void |
|
126 |
FcFormatContextDone (FcFormatContext *c) |
|
127 |
{
|
|
128 |
if (c && c->word_allocated) |
|
129 |
{
|
|
130 |
free (c->word); |
|
131 |
}
|
|
132 |
}
|
|
133 |
||
134 |
static FcBool |
|
135 |
consume_char (FcFormatContext *c, |
|
136 |
FcChar8 term) |
|
137 |
{
|
|
138 |
if (*c->format != term) |
|
139 |
return FcFalse; |
|
140 |
||
141 |
c->format++; |
|
142 |
return FcTrue; |
|
143 |
}
|
|
144 |
||
145 |
static FcBool |
|
146 |
expect_char (FcFormatContext *c, |
|
147 |
FcChar8 term) |
|
148 |
{
|
|
149 |
FcBool res = consume_char (c, term); |
|
150 |
if (!res) |
|
151 |
{
|
|
152 |
if (c->format == c->format_orig + c->format_len) |
|
153 |
message ("format ended while expecting '%c'", |
|
154 |
term); |
|
155 |
else
|
|
156 |
message ("expected '%c' at %d", |
|
157 |
term, c->format - c->format_orig + 1); |
|
158 |
}
|
|
159 |
return res; |
|
160 |
}
|
|
161 |
||
162 |
static FcBool |
|
163 |
FcCharIsPunct (const FcChar8 c) |
|
164 |
{
|
|
165 |
if (c < '0') |
|
166 |
return FcTrue; |
|
167 |
if (c <= '9') |
|
168 |
return FcFalse; |
|
169 |
if (c < 'A') |
|
170 |
return FcTrue; |
|
171 |
if (c <= 'Z') |
|
172 |
return FcFalse; |
|
173 |
if (c < 'a') |
|
174 |
return FcTrue; |
|
175 |
if (c <= 'z') |
|
176 |
return FcFalse; |
|
177 |
if (c <= '~') |
|
178 |
return FcTrue; |
|
179 |
return FcFalse; |
|
180 |
}
|
|
181 |
||
182 |
static char escaped_char(const char ch) |
|
183 |
{
|
|
184 |
switch (ch) { |
|
185 |
case 'a': return '\a'; |
|
186 |
case 'b': return '\b'; |
|
187 |
case 'f': return '\f'; |
|
188 |
case 'n': return '\n'; |
|
189 |
case 'r': return '\r'; |
|
190 |
case 't': return '\t'; |
|
191 |
case 'v': return '\v'; |
|
192 |
default: return ch; |
|
193 |
}
|
|
194 |
}
|
|
195 |
||
196 |
static FcBool |
|
197 |
read_word (FcFormatContext *c) |
|
198 |
{
|
|
199 |
FcChar8 *p; |
|
200 |
||
201 |
p = c->word; |
|
202 |
||
203 |
while (*c->format) |
|
204 |
{
|
|
205 |
if (*c->format == '\\') |
|
206 |
{
|
|
207 |
c->format++; |
|
208 |
if (*c->format) |
|
209 |
*p++ = escaped_char (*c->format++); |
|
210 |
continue; |
|
211 |
}
|
|
212 |
else if (FcCharIsPunct (*c->format)) |
|
213 |
break; |
|
214 |
||
215 |
*p++ = *c->format++; |
|
216 |
}
|
|
217 |
*p = '\0'; |
|
218 |
||
219 |
if (p == c->word) |
|
220 |
{
|
|
221 |
message ("expected identifier at %d", |
|
222 |
c->format - c->format_orig + 1); |
|
223 |
return FcFalse; |
|
224 |
}
|
|
225 |
||
226 |
return FcTrue; |
|
227 |
}
|
|
228 |
||
229 |
static FcBool |
|
230 |
read_chars (FcFormatContext *c, |
|
231 |
FcChar8 term) |
|
232 |
{
|
|
233 |
FcChar8 *p; |
|
234 |
||
235 |
p = c->word; |
|
236 |
||
237 |
while (*c->format && *c->format != '}' && *c->format != term) |
|
238 |
{
|
|
239 |
if (*c->format == '\\') |
|
240 |
{
|
|
241 |
c->format++; |
|
242 |
if (*c->format) |
|
243 |
*p++ = escaped_char (*c->format++); |
|
244 |
continue; |
|
245 |
}
|
|
246 |
||
247 |
*p++ = *c->format++; |
|
248 |
}
|
|
249 |
*p = '\0'; |
|
250 |
||
251 |
if (p == c->word) |
|
252 |
{
|
|
253 |
message ("expected character data at %d", |
|
254 |
c->format - c->format_orig + 1); |
|
255 |
return FcFalse; |
|
256 |
}
|
|
257 |
||
258 |
return FcTrue; |
|
259 |
}
|
|
260 |
||
261 |
static FcBool |
|
262 |
FcPatternFormatToBuf (FcPattern *pat, |
|
263 |
const FcChar8 *format, |
|
264 |
FcStrBuf *buf); |
|
265 |
||
266 |
static FcBool |
|
267 |
interpret_builtin (FcFormatContext *c, |
|
268 |
FcPattern *pat, |
|
269 |
FcStrBuf *buf) |
|
270 |
{
|
|
271 |
FcChar8 *new_str; |
|
272 |
FcBool ret; |
|
273 |
||
274 |
if (!expect_char (c, '=') || |
|
275 |
!read_word (c)) |
|
276 |
return FcFalse; |
|
277 |
||
278 |
/* try simple builtins first */
|
|
279 |
if (0) { } |
|
280 |
#define BUILTIN(name, func) \
|
|
281 |
else if (0 == strcmp ((const char *) c->word, name))\
|
|
282 |
do { new_str = func (pat); ret = FcTrue; } while (0)
|
|
283 |
BUILTIN ("unparse", FcNameUnparse); |
|
284 |
/* BUILTIN ("verbose", FcPatternPrint); XXX */
|
|
285 |
#undef BUILTIN
|
|
286 |
else
|
|
287 |
ret = FcFalse; |
|
288 |
||
289 |
if (ret) |
|
290 |
{
|
|
291 |
if (new_str) |
|
292 |
{
|
|
293 |
FcStrBufString (buf, new_str); |
|
294 |
free (new_str); |
|
295 |
return FcTrue; |
|
296 |
}
|
|
297 |
else
|
|
298 |
return FcFalse; |
|
299 |
}
|
|
300 |
||
301 |
/* now try our custom formats */
|
|
302 |
if (0) { } |
|
303 |
#define BUILTIN(name, format) \
|
|
304 |
else if (0 == strcmp ((const char *) c->word, name))\
|
|
305 |
ret = FcPatternFormatToBuf (pat, (const FcChar8 *) format, buf)
|
|
306 |
BUILTIN ("fcmatch", FCMATCH_FORMAT); |
|
307 |
BUILTIN ("fclist", FCLIST_FORMAT); |
|
308 |
BUILTIN ("pkgkit", PKGKIT_FORMAT); |
|
309 |
#undef BUILTIN
|
|
310 |
else
|
|
311 |
ret = FcFalse; |
|
312 |
||
313 |
if (!ret) |
|
314 |
message ("unknown builtin \"%s\"", |
|
315 |
c->word); |
|
316 |
||
317 |
return ret; |
|
318 |
}
|
|
319 |
||
320 |
static FcBool |
|
321 |
interpret_expr (FcFormatContext *c, |
|
322 |
FcPattern *pat, |
|
323 |
FcStrBuf *buf, |
|
324 |
FcChar8 term); |
|
325 |
||
326 |
static FcBool |
|
327 |
interpret_subexpr (FcFormatContext *c, |
|
328 |
FcPattern *pat, |
|
329 |
FcStrBuf *buf) |
|
330 |
{
|
|
331 |
return expect_char (c, '{') && |
|
332 |
interpret_expr (c, pat, buf, '}') && |
|
333 |
expect_char (c, '}'); |
|
334 |
}
|
|
335 |
||
336 |
static FcBool |
|
337 |
maybe_interpret_subexpr (FcFormatContext *c, |
|
338 |
FcPattern *pat, |
|
339 |
FcStrBuf *buf) |
|
340 |
{
|
|
341 |
return (*c->format == '{') ? |
|
342 |
interpret_subexpr (c, pat, buf) : |
|
343 |
FcTrue; |
|
344 |
}
|
|
345 |
||
346 |
static FcBool |
|
347 |
skip_subexpr (FcFormatContext *c); |
|
348 |
||
349 |
static FcBool |
|
350 |
skip_percent (FcFormatContext *c) |
|
351 |
{
|
|
352 |
int width; |
|
353 |
||
354 |
if (!expect_char (c, '%')) |
|
355 |
return FcFalse; |
|
356 |
||
357 |
/* skip an optional width specifier */
|
|
358 |
width = strtol ((const char *) c->format, (char **) &c->format, 10); |
|
359 |
||
360 |
if (!expect_char (c, '{')) |
|
361 |
return FcFalse; |
|
362 |
||
363 |
while(*c->format && *c->format != '}') |
|
364 |
{
|
|
365 |
switch (*c->format) |
|
366 |
{
|
|
367 |
case '\\': |
|
368 |
c->format++; /* skip over '\\' */ |
|
369 |
if (*c->format) |
|
370 |
c->format++; |
|
371 |
continue; |
|
372 |
case '{': |
|
373 |
if (!skip_subexpr (c)) |
|
374 |
return FcFalse; |
|
375 |
continue; |
|
376 |
}
|
|
377 |
c->format++; |
|
378 |
}
|
|
379 |
||
380 |
return expect_char (c, '}'); |
|
381 |
}
|
|
382 |
||
383 |
static FcBool |
|
384 |
skip_expr (FcFormatContext *c) |
|
385 |
{
|
|
386 |
while(*c->format && *c->format != '}') |
|
387 |
{
|
|
388 |
switch (*c->format) |
|
389 |
{
|
|
390 |
case '\\': |
|
391 |
c->format++; /* skip over '\\' */ |
|
392 |
if (*c->format) |
|
393 |
c->format++; |
|
394 |
continue; |
|
395 |
case '%': |
|
396 |
if (!skip_percent (c)) |
|
397 |
return FcFalse; |
|
398 |
continue; |
|
399 |
}
|
|
400 |
c->format++; |
|
401 |
}
|
|
402 |
||
403 |
return FcTrue; |
|
404 |
}
|
|
405 |
||
406 |
static FcBool |
|
407 |
skip_subexpr (FcFormatContext *c) |
|
408 |
{
|
|
409 |
return expect_char (c, '{') && |
|
410 |
skip_expr (c) && |
|
411 |
expect_char (c, '}'); |
|
412 |
}
|
|
413 |
||
414 |
static FcBool |
|
415 |
maybe_skip_subexpr (FcFormatContext *c) |
|
416 |
{
|
|
417 |
return (*c->format == '{') ? |
|
418 |
skip_subexpr (c) : |
|
419 |
FcTrue; |
|
420 |
}
|
|
421 |
||
422 |
static FcBool |
|
423 |
interpret_filter_in (FcFormatContext *c, |
|
424 |
FcPattern *pat, |
|
425 |
FcStrBuf *buf) |
|
426 |
{
|
|
427 |
FcObjectSet *os; |
|
428 |
FcPattern *subpat; |
|
429 |
||
430 |
if (!expect_char (c, '+')) |
|
431 |
return FcFalse; |
|
432 |
||
433 |
os = FcObjectSetCreate (); |
|
434 |
if (!os) |
|
435 |
return FcFalse; |
|
436 |
||
437 |
do
|
|
438 |
{
|
|
439 |
if (!read_word (c) || |
|
440 |
!FcObjectSetAdd (os, (const char *) c->word)) |
|
441 |
{
|
|
442 |
FcObjectSetDestroy (os); |
|
443 |
return FcFalse; |
|
444 |
}
|
|
445 |
}
|
|
446 |
while (consume_char (c, ',')); |
|
447 |
||
448 |
subpat = FcPatternFilter (pat, os); |
|
449 |
FcObjectSetDestroy (os); |
|
450 |
||
451 |
if (!subpat || |
|
452 |
!interpret_subexpr (c, subpat, buf)) |
|
453 |
return FcFalse; |
|
454 |
||
455 |
FcPatternDestroy (subpat); |
|
456 |
return FcTrue; |
|
457 |
}
|
|
458 |
||
459 |
static FcBool |
|
460 |
interpret_filter_out (FcFormatContext *c, |
|
461 |
FcPattern *pat, |
|
462 |
FcStrBuf *buf) |
|
463 |
{
|
|
464 |
FcPattern *subpat; |
|
465 |
||
466 |
if (!expect_char (c, '-')) |
|
467 |
return FcFalse; |
|
468 |
||
469 |
subpat = FcPatternDuplicate (pat); |
|
470 |
if (!subpat) |
|
471 |
return FcFalse; |
|
472 |
||
473 |
do
|
|
474 |
{
|
|
475 |
if (!read_word (c)) |
|
476 |
{
|
|
477 |
FcPatternDestroy (subpat); |
|
478 |
return FcFalse; |
|
479 |
}
|
|
480 |
||
481 |
FcPatternDel (subpat, (const char *) c->word); |
|
482 |
}
|
|
483 |
while (consume_char (c, ',')); |
|
484 |
||
485 |
if (!interpret_subexpr (c, subpat, buf)) |
|
486 |
return FcFalse; |
|
487 |
||
488 |
FcPatternDestroy (subpat); |
|
489 |
return FcTrue; |
|
490 |
}
|
|
491 |
||
492 |
static FcBool |
|
493 |
interpret_cond (FcFormatContext *c, |
|
494 |
FcPattern *pat, |
|
495 |
FcStrBuf *buf) |
|
496 |
{
|
|
497 |
FcBool pass; |
|
498 |
||
499 |
if (!expect_char (c, '?')) |
|
500 |
return FcFalse; |
|
501 |
||
502 |
pass = FcTrue; |
|
503 |
||
504 |
do
|
|
505 |
{
|
|
506 |
FcBool negate; |
|
507 |
FcValue v; |
|
508 |
||
509 |
negate = consume_char (c, '!'); |
|
510 |
||
511 |
if (!read_word (c)) |
|
512 |
return FcFalse; |
|
513 |
||
514 |
pass = pass && |
|
515 |
(negate ^ |
|
516 |
(FcResultMatch == |
|
517 |
FcPatternGet (pat, (const char *) c->word, 0, &v))); |
|
518 |
}
|
|
519 |
while (consume_char (c, ',')); |
|
520 |
||
521 |
if (pass) |
|
522 |
{
|
|
523 |
if (!interpret_subexpr (c, pat, buf) || |
|
524 |
!maybe_skip_subexpr (c)) |
|
525 |
return FcFalse; |
|
526 |
}
|
|
527 |
else
|
|
528 |
{
|
|
529 |
if (!skip_subexpr (c) || |
|
530 |
!maybe_interpret_subexpr (c, pat, buf)) |
|
531 |
return FcFalse; |
|
532 |
}
|
|
533 |
||
534 |
return FcTrue; |
|
535 |
}
|
|
536 |
||
537 |
static FcBool |
|
538 |
interpret_count (FcFormatContext *c, |
|
539 |
FcPattern *pat, |
|
540 |
FcStrBuf *buf) |
|
541 |
{
|
|
542 |
int count; |
|
543 |
FcPatternElt *e; |
|
544 |
FcChar8 buf_static[64]; |
|
545 |
||
546 |
if (!expect_char (c, '#')) |
|
547 |
return FcFalse; |
|
548 |
||
549 |
if (!read_word (c)) |
|
550 |
return FcFalse; |
|
551 |
||
552 |
count = 0; |
|
553 |
e = FcPatternObjectFindElt (pat, |
|
554 |
FcObjectFromName ((const char *) c->word)); |
|
555 |
if (e) |
|
556 |
{
|
|
557 |
FcValueListPtr l; |
|
558 |
count++; |
|
559 |
for (l = FcPatternEltValues(e); |
|
560 |
l->next; |
|
561 |
l = l->next) |
|
562 |
count++; |
|
563 |
}
|
|
564 |
||
565 |
snprintf ((char *) buf_static, sizeof (buf_static), "%d", count); |
|
566 |
FcStrBufString (buf, buf_static); |
|
567 |
||
568 |
return FcTrue; |
|
569 |
}
|
|
570 |
||
571 |
static FcBool |
|
572 |
interpret_enumerate (FcFormatContext *c, |
|
573 |
FcPattern *pat, |
|
574 |
FcStrBuf *buf) |
|
575 |
{
|
|
576 |
FcObjectSet *os; |
|
577 |
FcPattern *subpat; |
|
578 |
const FcChar8 *format_save; |
|
579 |
int idx; |
|
580 |
FcBool ret, done; |
|
581 |
FcStrList *lang_strs; |
|
582 |
||
583 |
if (!expect_char (c, '[') || |
|
584 |
!expect_char (c, ']')) |
|
585 |
return FcFalse; |
|
586 |
||
587 |
os = FcObjectSetCreate (); |
|
588 |
if (!os) |
|
589 |
return FcFalse; |
|
590 |
||
591 |
ret = FcTrue; |
|
592 |
||
593 |
do
|
|
594 |
{
|
|
595 |
if (!read_word (c) || |
|
596 |
!FcObjectSetAdd (os, (const char *) c->word)) |
|
597 |
{
|
|
598 |
FcObjectSetDestroy (os); |
|
599 |
return FcFalse; |
|
600 |
}
|
|
601 |
}
|
|
602 |
while (consume_char (c, ',')); |
|
603 |
||
604 |
/* If we have one element and it's of type FcLangSet, we want
|
|
605 |
* to enumerate the languages in it. */
|
|
606 |
lang_strs = NULL; |
|
607 |
if (os->nobject == 1) |
|
608 |
{
|
|
609 |
FcLangSet *langset; |
|
610 |
if (FcResultMatch == |
|
611 |
FcPatternGetLangSet (pat, os->objects[0], idx, &langset)) |
|
612 |
{
|
|
613 |
FcStrSet *ss; |
|
614 |
if (!(ss = FcLangSetGetLangs (langset)) || |
|
615 |
!(lang_strs = FcStrListCreate (ss))) |
|
616 |
goto bail0; |
|
617 |
}
|
|
618 |
}
|
|
619 |
||
620 |
subpat = FcPatternDuplicate (pat); |
|
621 |
if (!subpat) |
|
622 |
goto bail0; |
|
623 |
||
624 |
format_save = c->format; |
|
625 |
idx = 0; |
|
626 |
do
|
|
627 |
{
|
|
628 |
int i; |
|
629 |
||
630 |
done = FcTrue; |
|
631 |
||
632 |
if (lang_strs) |
|
633 |
{
|
|
634 |
FcChar8 *lang; |
|
635 |
||
636 |
FcPatternDel (subpat, os->objects[0]); |
|
637 |
if ((lang = FcStrListNext (lang_strs))) |
|
638 |
{
|
|
639 |
FcPatternAddString (subpat, os->objects[0], lang); |
|
640 |
done = FcFalse; |
|
641 |
}
|
|
642 |
}
|
|
643 |
else
|
|
644 |
{
|
|
645 |
for (i = 0; i < os->nobject; i++) |
|
646 |
{
|
|
647 |
FcValue v; |
|
648 |
||
649 |
/* XXX this can be optimized by accessing valuelist linked lists
|
|
650 |
* directly and remembering where we were. Most (all) value lists
|
|
651 |
* in normal uses are pretty short though (language tags are
|
|
652 |
* stored as a LangSet, not separate values.). */
|
|
653 |
FcPatternDel (subpat, os->objects[i]); |
|
654 |
if (FcResultMatch == |
|
655 |
FcPatternGet (pat, os->objects[i], idx, &v)) |
|
656 |
{
|
|
657 |
FcPatternAdd (subpat, os->objects[i], v, FcFalse); |
|
658 |
done = FcFalse; |
|
659 |
}
|
|
660 |
}
|
|
661 |
}
|
|
662 |
||
663 |
if (!done) |
|
664 |
{
|
|
665 |
c->format = format_save; |
|
666 |
ret = interpret_subexpr (c, subpat, buf); |
|
667 |
if (!ret) |
|
668 |
goto bail; |
|
669 |
}
|
|
670 |
||
671 |
idx++; |
|
672 |
} while (!done); |
|
673 |
||
674 |
if (c->format == format_save) |
|
675 |
skip_subexpr (c); |
|
676 |
||
677 |
bail: |
|
678 |
FcPatternDestroy (subpat); |
|
679 |
bail0: |
|
680 |
if (lang_strs) |
|
681 |
FcStrListDone (lang_strs); |
|
682 |
FcObjectSetDestroy (os); |
|
683 |
||
684 |
return ret; |
|
685 |
}
|
|
686 |
||
687 |
static FcBool |
|
688 |
interpret_simple (FcFormatContext *c, |
|
689 |
FcPattern *pat, |
|
690 |
FcStrBuf *buf) |
|
691 |
{
|
|
692 |
FcPatternElt *e; |
|
693 |
FcBool add_colon = FcFalse; |
|
694 |
FcBool add_elt_name = FcFalse; |
|
695 |
int idx; |
|
696 |
FcChar8 *else_string; |
|
697 |
||
698 |
if (consume_char (c, ':')) |
|
699 |
add_colon = FcTrue; |
|
700 |
||
701 |
if (!read_word (c)) |
|
702 |
return FcFalse; |
|
703 |
||
704 |
idx = -1; |
|
705 |
if (consume_char (c, '[')) |
|
706 |
{
|
|
707 |
idx = strtol ((const char *) c->format, (char **) &c->format, 10); |
|
708 |
if (idx < 0) |
|
709 |
{
|
|
710 |
message ("expected non-negative number at %d", |
|
711 |
c->format-1 - c->format_orig + 1); |
|
712 |
return FcFalse; |
|
713 |
}
|
|
714 |
if (!expect_char (c, ']')) |
|
715 |
return FcFalse; |
|
716 |
}
|
|
717 |
||
718 |
if (consume_char (c, '=')) |
|
719 |
add_elt_name = FcTrue; |
|
720 |
||
721 |
/* modifiers */
|
|
722 |
else_string = NULL; |
|
723 |
if (consume_char (c, ':')) |
|
724 |
{
|
|
725 |
FcChar8 *orig; |
|
726 |
/* divert the c->word for now */
|
|
727 |
orig = c->word; |
|
728 |
c->word = c->word + strlen ((const char *) c->word) + 1; |
|
729 |
/* for now we just support 'default value' */
|
|
730 |
if (!expect_char (c, '-') || |
|
731 |
!read_chars (c, '\0')) |
|
732 |
{
|
|
733 |
c->word = orig; |
|
734 |
return FcFalse; |
|
735 |
}
|
|
736 |
else_string = c->word; |
|
737 |
c->word = orig; |
|
738 |
}
|
|
739 |
||
740 |
e = FcPatternObjectFindElt (pat, |
|
741 |
FcObjectFromName ((const char *) c->word)); |
|
742 |
if (e || else_string) |
|
743 |
{
|
|
744 |
FcValueListPtr l = NULL; |
|
745 |
||
746 |
if (add_colon) |
|
747 |
FcStrBufChar (buf, ':'); |
|
748 |
if (add_elt_name) |
|
749 |
{
|
|
750 |
FcStrBufString (buf, c->word); |
|
751 |
FcStrBufChar (buf, '='); |
|
752 |
}
|
|
753 |
||
754 |
if (e) |
|
755 |
l = FcPatternEltValues(e); |
|
756 |
||
757 |
if (idx != -1) |
|
758 |
{
|
|
759 |
while (l && idx > 0) |
|
760 |
{
|
|
761 |
l = FcValueListNext(l); |
|
762 |
idx--; |
|
763 |
}
|
|
764 |
if (l && idx == 0) |
|
765 |
{
|
|
766 |
if (!FcNameUnparseValue (buf, &l->value, '\0')) |
|
767 |
return FcFalse; |
|
768 |
}
|
|
769 |
else goto notfound; |
|
770 |
}
|
|
771 |
else if (l) |
|
772 |
{
|
|
773 |
FcNameUnparseValueList (buf, l, '\0'); |
|
774 |
}
|
|
775 |
else
|
|
776 |
{
|
|
777 |
notfound: |
|
778 |
if (else_string) |
|
779 |
FcStrBufString (buf, else_string); |
|
780 |
}
|
|
781 |
}
|
|
782 |
||
783 |
return FcTrue; |
|
784 |
}
|
|
785 |
||
786 |
static FcBool |
|
787 |
cescape (FcFormatContext *c, |
|
788 |
const FcChar8 *str, |
|
789 |
FcStrBuf *buf) |
|
790 |
{
|
|
791 |
while(*str) |
|
792 |
{
|
|
793 |
switch (*str) |
|
794 |
{
|
|
795 |
case '\\': |
|
796 |
case '"': |
|
797 |
FcStrBufChar (buf, '\\'); |
|
798 |
break; |
|
799 |
}
|
|
800 |
FcStrBufChar (buf, *str++); |
|
801 |
}
|
|
802 |
return FcTrue; |
|
803 |
}
|
|
804 |
||
805 |
static FcBool |
|
806 |
shescape (FcFormatContext *c, |
|
807 |
const FcChar8 *str, |
|
808 |
FcStrBuf *buf) |
|
809 |
{
|
|
810 |
FcStrBufChar (buf, '\''); |
|
811 |
while(*str) |
|
812 |
{
|
|
813 |
if (*str == '\'') |
|
814 |
FcStrBufString (buf, (const FcChar8 *) "'\\''"); |
|
815 |
else
|
|
816 |
FcStrBufChar (buf, *str); |
|
817 |
str++; |
|
818 |
}
|
|
819 |
FcStrBufChar (buf, '\''); |
|
820 |
return FcTrue; |
|
821 |
}
|
|
822 |
||
823 |
static FcBool |
|
824 |
xmlescape (FcFormatContext *c, |
|
825 |
const FcChar8 *str, |
|
826 |
FcStrBuf *buf) |
|
827 |
{
|
|
828 |
while(*str) |
|
829 |
{
|
|
830 |
switch (*str) |
|
831 |
{
|
|
832 |
case '&': FcStrBufString (buf, (const FcChar8 *) "&"); break; |
|
833 |
case '<': FcStrBufString (buf, (const FcChar8 *) "<"); break; |
|
834 |
case '>': FcStrBufString (buf, (const FcChar8 *) ">"); break; |
|
835 |
default: FcStrBufChar (buf, *str); break; |
|
836 |
}
|
|
837 |
str++; |
|
838 |
}
|
|
839 |
return FcTrue; |
|
840 |
}
|
|
841 |
||
842 |
static FcBool |
|
843 |
delete_chars (FcFormatContext *c, |
|
844 |
const FcChar8 *str, |
|
845 |
FcStrBuf *buf) |
|
846 |
{
|
|
847 |
/* XXX not UTF-8 aware */
|
|
848 |
||
849 |
if (!expect_char (c, '(') || |
|
850 |
!read_chars (c, ')') || |
|
851 |
!expect_char (c, ')')) |
|
852 |
return FcFalse; |
|
853 |
||
854 |
while(*str) |
|
855 |
{
|
|
856 |
FcChar8 *p; |
|
857 |
||
858 |
p = (FcChar8 *) strpbrk ((const char *) str, (const char *) c->word); |
|
859 |
if (p) |
|
860 |
{
|
|
861 |
FcStrBufData (buf, str, p - str); |
|
862 |
str = p + 1; |
|
863 |
}
|
|
864 |
else
|
|
865 |
{
|
|
866 |
FcStrBufString (buf, str); |
|
867 |
break; |
|
868 |
}
|
|
869 |
||
870 |
}
|
|
871 |
||
872 |
return FcTrue; |
|
873 |
}
|
|
874 |
||
875 |
static FcBool |
|
876 |
escape_chars (FcFormatContext *c, |
|
877 |
const FcChar8 *str, |
|
878 |
FcStrBuf *buf) |
|
879 |
{
|
|
880 |
/* XXX not UTF-8 aware */
|
|
881 |
||
882 |
if (!expect_char (c, '(') || |
|
883 |
!read_chars (c, ')') || |
|
884 |
!expect_char (c, ')')) |
|
885 |
return FcFalse; |
|
886 |
||
887 |
while(*str) |
|
888 |
{
|
|
889 |
FcChar8 *p; |
|
890 |
||
891 |
p = (FcChar8 *) strpbrk ((const char *) str, (const char *) c->word); |
|
892 |
if (p) |
|
893 |
{
|
|
894 |
FcStrBufData (buf, str, p - str); |
|
895 |
FcStrBufChar (buf, c->word[0]); |
|
896 |
FcStrBufChar (buf, *p); |
|
897 |
str = p + 1; |
|
898 |
}
|
|
899 |
else
|
|
900 |
{
|
|
901 |
FcStrBufString (buf, str); |
|
902 |
break; |
|
903 |
}
|
|
904 |
||
905 |
}
|
|
906 |
||
907 |
return FcTrue; |
|
908 |
}
|
|
909 |
||
910 |
static FcBool |
|
911 |
translate_chars (FcFormatContext *c, |
|
912 |
const FcChar8 *str, |
|
913 |
FcStrBuf *buf) |
|
914 |
{
|
|
915 |
char *from, *to, repeat; |
|
916 |
int from_len, to_len; |
|
917 |
||
918 |
/* XXX not UTF-8 aware */
|
|
919 |
||
920 |
if (!expect_char (c, '(') || |
|
921 |
!read_chars (c, ',') || |
|
922 |
!expect_char (c, ',')) |
|
923 |
return FcFalse; |
|
924 |
||
925 |
from = (char *) c->word; |
|
926 |
from_len = strlen (from); |
|
927 |
to = from + from_len + 1; |
|
928 |
||
929 |
/* hack: we temporarily divert c->word */
|
|
930 |
c->word = (FcChar8 *) to; |
|
931 |
if (!read_chars (c, ')')) |
|
932 |
{
|
|
933 |
c->word = (FcChar8 *) from; |
|
934 |
return FcFalse; |
|
935 |
}
|
|
936 |
c->word = (FcChar8 *) from; |
|
937 |
||
938 |
to_len = strlen (to); |
|
939 |
repeat = to[to_len - 1]; |
|
940 |
||
941 |
if (!expect_char (c, ')')) |
|
942 |
return FcFalse; |
|
943 |
||
944 |
while(*str) |
|
945 |
{
|
|
946 |
FcChar8 *p; |
|
947 |
||
948 |
p = (FcChar8 *) strpbrk ((const char *) str, (const char *) from); |
|
949 |
if (p) |
|
950 |
{
|
|
951 |
int i; |
|
952 |
FcStrBufData (buf, str, p - str); |
|
953 |
i = strchr (from, *p) - from; |
|
954 |
FcStrBufChar (buf, i < to_len ? to[i] : repeat); |
|
955 |
str = p + 1; |
|
956 |
}
|
|
957 |
else
|
|
958 |
{
|
|
959 |
FcStrBufString (buf, str); |
|
960 |
break; |
|
961 |
}
|
|
962 |
||
963 |
}
|
|
964 |
||
965 |
return FcTrue; |
|
966 |
}
|
|
967 |
||
968 |
static FcBool |
|
969 |
interpret_convert (FcFormatContext *c, |
|
970 |
FcStrBuf *buf, |
|
971 |
int start) |
|
972 |
{
|
|
973 |
const FcChar8 *str; |
|
974 |
FcChar8 *new_str; |
|
975 |
FcStrBuf new_buf; |
|
976 |
FcChar8 buf_static[8192]; |
|
977 |
FcBool ret; |
|
978 |
||
979 |
if (!expect_char (c, '|') || |
|
980 |
!read_word (c)) |
|
981 |
return FcFalse; |
|
982 |
||
983 |
/* prepare the buffer */
|
|
984 |
FcStrBufChar (buf, '\0'); |
|
985 |
if (buf->failed) |
|
986 |
return FcFalse; |
|
987 |
str = buf->buf + start; |
|
988 |
buf->len = start; |
|
989 |
||
990 |
/* try simple converters first */
|
|
991 |
if (0) { } |
|
992 |
#define CONVERTER(name, func) \
|
|
993 |
else if (0 == strcmp ((const char *) c->word, name))\
|
|
994 |
do { new_str = func (str); ret = FcTrue; } while (0)
|
|
995 |
CONVERTER ("downcase", FcStrDowncase); |
|
996 |
CONVERTER ("basename", FcStrBasename); |
|
997 |
CONVERTER ("dirname", FcStrDirname); |
|
998 |
#undef CONVERTER
|
|
999 |
else
|
|
1000 |
ret = FcFalse; |
|
1001 |
||
1002 |
if (ret) |
|
1003 |
{
|
|
1004 |
if (new_str) |
|
1005 |
{
|
|
1006 |
FcStrBufString (buf, new_str); |
|
1007 |
free (new_str); |
|
1008 |
return FcTrue; |
|
1009 |
}
|
|
1010 |
else
|
|
1011 |
return FcFalse; |
|
1012 |
}
|
|
1013 |
||
1014 |
FcStrBufInit (&new_buf, buf_static, sizeof (buf_static)); |
|
1015 |
||
1016 |
/* now try our custom converters */
|
|
1017 |
if (0) { } |
|
1018 |
#define CONVERTER(name, func) \
|
|
1019 |
else if (0 == strcmp ((const char *) c->word, name))\
|
|
1020 |
ret = func (c, str, &new_buf)
|
|
1021 |
CONVERTER ("cescape", cescape); |
|
1022 |
CONVERTER ("shescape", shescape); |
|
1023 |
CONVERTER ("xmlescape", xmlescape); |
|
1024 |
CONVERTER ("delete", delete_chars); |
|
1025 |
CONVERTER ("escape", escape_chars); |
|
1026 |
CONVERTER ("translate", translate_chars); |
|
1027 |
#undef CONVERTER
|
|
1028 |
else
|
|
1029 |
ret = FcFalse; |
|
1030 |
||
1031 |
if (ret) |
|
1032 |
{
|
|
1033 |
FcStrBufChar (&new_buf, '\0'); |
|
1034 |
FcStrBufString (buf, new_buf.buf); |
|
1035 |
}
|
|
1036 |
else
|
|
1037 |
message ("unknown converter \"%s\"", |
|
1038 |
c->word); |
|
1039 |
||
1040 |
FcStrBufDestroy (&new_buf); |
|
1041 |
||
1042 |
return ret; |
|
1043 |
}
|
|
1044 |
||
1045 |
static FcBool |
|
1046 |
maybe_interpret_converts (FcFormatContext *c, |
|
1047 |
FcStrBuf *buf, |
|
1048 |
int start) |
|
1049 |
{
|
|
1050 |
while (*c->format == '|') |
|
1051 |
if (!interpret_convert (c, buf, start)) |
|
1052 |
return FcFalse; |
|
1053 |
||
1054 |
return FcTrue; |
|
1055 |
}
|
|
1056 |
||
1057 |
static FcBool |
|
1058 |
align_to_width (FcStrBuf *buf, |
|
1059 |
int start, |
|
1060 |
int width) |
|
1061 |
{
|
|
1062 |
int len; |
|
1063 |
||
1064 |
if (buf->failed) |
|
1065 |
return FcFalse; |
|
1066 |
||
1067 |
len = buf->len - start; |
|
1068 |
if (len < -width) |
|
1069 |
{
|
|
1070 |
/* left align */
|
|
1071 |
while (len++ < -width) |
|
1072 |
FcStrBufChar (buf, ' '); |
|
1073 |
}
|
|
1074 |
else if (len < width) |
|
1075 |
{
|
|
1076 |
int old_len; |
|
1077 |
old_len = len; |
|
1078 |
/* right align */
|
|
1079 |
while (len++ < width) |
|
1080 |
FcStrBufChar (buf, ' '); |
|
1081 |
if (buf->failed) |
|
1082 |
return FcFalse; |
|
1083 |
len = old_len; |
|
1084 |
memmove (buf->buf + buf->len - len, |
|
1085 |
buf->buf + buf->len - width, |
|
1086 |
len); |
|
1087 |
memset (buf->buf + buf->len - width, |
|
1088 |
' ', |
|
1089 |
width - len); |
|
1090 |
}
|
|
1091 |
||
1092 |
return !buf->failed; |
|
1093 |
}
|
|
1094 |
static FcBool |
|
1095 |
interpret_percent (FcFormatContext *c, |
|
1096 |
FcPattern *pat, |
|
1097 |
FcStrBuf *buf) |
|
1098 |
{
|
|
1099 |
int width, start; |
|
1100 |
FcBool ret; |
|
1101 |
||
1102 |
if (!expect_char (c, '%')) |
|
1103 |
return FcFalse; |
|
1104 |
||
1105 |
if (consume_char (c, '%')) /* "%%" */ |
|
1106 |
{
|
|
1107 |
FcStrBufChar (buf, '%'); |
|
1108 |
return FcTrue; |
|
1109 |
}
|
|
1110 |
||
1111 |
/* parse an optional width specifier */
|
|
1112 |
width = strtol ((const char *) c->format, (char **) &c->format, 10); |
|
1113 |
||
1114 |
if (!expect_char (c, '{')) |
|
1115 |
return FcFalse; |
|
1116 |
||
1117 |
start = buf->len; |
|
1118 |
||
1119 |
switch (*c->format) { |
|
1120 |
case '=': ret = interpret_builtin (c, pat, buf); break; |
|
1121 |
case '{': ret = interpret_subexpr (c, pat, buf); break; |
|
1122 |
case '+': ret = interpret_filter_in (c, pat, buf); break; |
|
1123 |
case '-': ret = interpret_filter_out (c, pat, buf); break; |
|
1124 |
case '?': ret = interpret_cond (c, pat, buf); break; |
|
1125 |
case '#': ret = interpret_count (c, pat, buf); break; |
|
1126 |
case '[': ret = interpret_enumerate (c, pat, buf); break; |
|
1127 |
default: ret = interpret_simple (c, pat, buf); break; |
|
1128 |
}
|
|
1129 |
||
1130 |
return ret && |
|
1131 |
maybe_interpret_converts (c, buf, start) && |
|
1132 |
align_to_width (buf, start, width) && |
|
1133 |
expect_char (c, '}'); |
|
1134 |
}
|
|
1135 |
||
1136 |
static FcBool |
|
1137 |
interpret_expr (FcFormatContext *c, |
|
1138 |
FcPattern *pat, |
|
1139 |
FcStrBuf *buf, |
|
1140 |
FcChar8 term) |
|
1141 |
{
|
|
1142 |
while (*c->format && *c->format != term) |
|
1143 |
{
|
|
1144 |
switch (*c->format) |
|
1145 |
{
|
|
1146 |
case '\\': |
|
1147 |
c->format++; /* skip over '\\' */ |
|
1148 |
if (*c->format) |
|
1149 |
FcStrBufChar (buf, escaped_char (*c->format++)); |
|
1150 |
continue; |
|
1151 |
case '%': |
|
1152 |
if (!interpret_percent (c, pat, buf)) |
|
1153 |
return FcFalse; |
|
1154 |
continue; |
|
1155 |
}
|
|
1156 |
FcStrBufChar (buf, *c->format++); |
|
1157 |
}
|
|
1158 |
return FcTrue; |
|
1159 |
}
|
|
1160 |
||
1161 |
static FcBool |
|
1162 |
FcPatternFormatToBuf (FcPattern *pat, |
|
1163 |
const FcChar8 *format, |
|
1164 |
FcStrBuf *buf) |
|
1165 |
{
|
|
1166 |
FcFormatContext c; |
|
1167 |
FcChar8 word_static[1024]; |
|
1168 |
FcBool ret; |
|
1169 |
||
1170 |
if (!FcFormatContextInit (&c, format, word_static, sizeof (word_static))) |
|
1171 |
return FcFalse; |
|
1172 |
||
1173 |
ret = interpret_expr (&c, pat, buf, '\0'); |
|
1174 |
||
1175 |
FcFormatContextDone (&c); |
|
1176 |
||
1177 |
return ret; |
|
1178 |
}
|
|
1179 |
||
1180 |
FcChar8 * |
|
1181 |
FcPatternFormat (FcPattern *pat, |
|
1182 |
const FcChar8 *format) |
|
1183 |
{
|
|
1184 |
FcStrBuf buf; |
|
1185 |
FcChar8 buf_static[8192 - 1024]; |
|
1186 |
FcBool ret; |
|
1187 |
||
1188 |
FcStrBufInit (&buf, buf_static, sizeof (buf_static)); |
|
1189 |
||
1190 |
ret = FcPatternFormatToBuf (pat, format, &buf); |
|
1191 |
||
1192 |
if (ret) |
|
1193 |
return FcStrBufDone (&buf); |
|
1194 |
else
|
|
1195 |
{
|
|
1196 |
FcStrBufDestroy (&buf); |
|
1197 |
return NULL; |
|
1198 |
}
|
|
1199 |
}
|
|
1200 |
||
1201 |
#define __fcformat__
|
|
1202 |
#include "fcaliastail.h" |
|
1203 |
#undef __fcformat__
|