Commit | Line | Data |
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2117e02e MW |
1 | #include "stralloc.h" |
2 | #include "alloc.h" | |
3 | #include "str.h" | |
4 | #include "token822.h" | |
5 | #include "gen_allocdefs.h" | |
6 | ||
7 | static struct token822 comma = { TOKEN822_COMMA }; | |
8 | ||
9 | void token822_reverse(ta) | |
10 | token822_alloc *ta; | |
11 | { | |
12 | int i; | |
13 | int n; | |
14 | struct token822 temp; | |
15 | ||
16 | n = ta->len - 1; | |
17 | for (i = 0;i + i < n;++i) | |
18 | { | |
19 | temp = ta->t[i]; | |
20 | ta->t[i] = ta->t[n - i]; | |
21 | ta->t[n - i] = temp; | |
22 | } | |
23 | } | |
24 | ||
25 | GEN_ALLOC_ready(token822_alloc,struct token822,t,len,a,i,n,x,30,token822_ready) | |
26 | GEN_ALLOC_readyplus(token822_alloc,struct token822,t,len,a,i,n,x,30,token822_readyplus) | |
27 | GEN_ALLOC_append(token822_alloc,struct token822,t,len,a,i,n,x,30,token822_readyplus,token822_append) | |
28 | ||
29 | static int needspace(t1,t2) | |
30 | int t1; | |
31 | int t2; | |
32 | { | |
33 | if (!t1) return 0; | |
34 | if (t1 == TOKEN822_COLON) return 1; | |
35 | if (t1 == TOKEN822_COMMA) return 1; | |
36 | if (t2 == TOKEN822_LEFT) return 1; | |
37 | switch(t1) | |
38 | { | |
39 | case TOKEN822_ATOM: case TOKEN822_LITERAL: | |
40 | case TOKEN822_QUOTE: case TOKEN822_COMMENT: | |
41 | switch(t2) | |
42 | { | |
43 | case TOKEN822_ATOM: case TOKEN822_LITERAL: | |
44 | case TOKEN822_QUOTE: case TOKEN822_COMMENT: | |
45 | return 1; | |
46 | } | |
47 | } | |
48 | return 0; | |
49 | } | |
50 | ||
51 | static int atomok(ch) | |
52 | char ch; | |
53 | { | |
54 | switch(ch) | |
55 | { | |
56 | case ' ': case '\t': case '\r': case '\n': | |
57 | case '(': case '[': case '"': | |
58 | case '<': case '>': case ';': case ':': | |
59 | case '@': case ',': case '.': | |
60 | return 0; | |
61 | } | |
62 | return 1; | |
63 | } | |
64 | ||
65 | static void atomcheck(t) | |
66 | struct token822 *t; | |
67 | { | |
68 | int i; | |
69 | char ch; | |
70 | for (i = 0;i < t->slen;++i) | |
71 | { | |
72 | ch = t->s[i]; | |
73 | if ((ch < 32) || (ch > 126) || (ch == ')') || (ch == ']') || (ch == '\\')) | |
74 | { | |
75 | t->type = TOKEN822_QUOTE; | |
76 | return; | |
77 | } | |
78 | } | |
79 | } | |
80 | ||
81 | int token822_unparse(sa,ta,linelen) | |
82 | stralloc *sa; | |
83 | token822_alloc *ta; | |
84 | unsigned int linelen; | |
85 | { | |
86 | struct token822 *t; | |
87 | int len; | |
88 | int ch; | |
89 | int i; | |
90 | int j; | |
91 | int lasttype; | |
92 | int newtype; | |
93 | char *s; | |
94 | char *lineb; | |
95 | char *linee; | |
96 | ||
97 | len = 0; | |
98 | lasttype = 0; | |
99 | for (i = 0;i < ta->len;++i) | |
100 | { | |
101 | t = ta->t + i; | |
102 | newtype = t->type; | |
103 | if (needspace(lasttype,newtype)) | |
104 | ++len; | |
105 | lasttype = newtype; | |
106 | switch(newtype) | |
107 | { | |
108 | case TOKEN822_COMMA: | |
109 | len += 3; break; | |
110 | case TOKEN822_AT: case TOKEN822_DOT: case TOKEN822_LEFT: case TOKEN822_RIGHT: | |
111 | case TOKEN822_SEMI: case TOKEN822_COLON: | |
112 | ++len; break; | |
113 | case TOKEN822_ATOM: case TOKEN822_QUOTE: case TOKEN822_LITERAL: case TOKEN822_COMMENT: | |
114 | if (t->type != TOKEN822_ATOM) len += 2; | |
115 | for (j = 0;j < t->slen;++j) | |
116 | switch(ch = t->s[j]) | |
117 | { | |
118 | case '"': case '[': case ']': case '(': case ')': | |
119 | case '\\': case '\r': case '\n': ++len; | |
120 | default: ++len; | |
121 | } | |
122 | break; | |
123 | } | |
124 | } | |
125 | len += 2; | |
126 | ||
127 | if (!stralloc_ready(sa,len)) | |
128 | return -1; | |
129 | ||
130 | s = sa->s; | |
131 | lineb = s; | |
132 | linee = 0; | |
133 | ||
134 | lasttype = 0; | |
135 | for (i = 0;i < ta->len;++i) | |
136 | { | |
137 | t = ta->t + i; | |
138 | newtype = t->type; | |
139 | if (needspace(lasttype,newtype)) | |
140 | *s++ = ' '; | |
141 | lasttype = newtype; | |
142 | switch(newtype) | |
143 | { | |
144 | case TOKEN822_COMMA: | |
145 | *s++ = ','; | |
146 | #define NSUW \ | |
147 | s[0] = '\n'; s[1] = ' '; \ | |
148 | if (linee && (!linelen || (s - lineb <= linelen))) \ | |
149 | { while (linee < s) { linee[0] = linee[2]; ++linee; } linee -= 2; } \ | |
150 | else { if (linee) lineb = linee + 1; linee = s; s += 2; } | |
151 | NSUW | |
152 | break; | |
153 | case TOKEN822_AT: *s++ = '@'; break; | |
154 | case TOKEN822_DOT: *s++ = '.'; break; | |
155 | case TOKEN822_LEFT: *s++ = '<'; break; | |
156 | case TOKEN822_RIGHT: *s++ = '>'; break; | |
157 | case TOKEN822_SEMI: *s++ = ';'; break; | |
158 | case TOKEN822_COLON: *s++ = ':'; break; | |
159 | case TOKEN822_ATOM: case TOKEN822_QUOTE: case TOKEN822_LITERAL: case TOKEN822_COMMENT: | |
160 | if (t->type == TOKEN822_QUOTE) *s++ = '"'; | |
161 | if (t->type == TOKEN822_LITERAL) *s++ = '['; | |
162 | if (t->type == TOKEN822_COMMENT) *s++ = '('; | |
163 | for (j = 0;j < t->slen;++j) | |
164 | switch(ch = t->s[j]) | |
165 | { | |
166 | case '"': case '[': case ']': case '(': case ')': | |
167 | case '\\': case '\r': case '\n': *s++ = '\\'; | |
168 | default: *s++ = ch; | |
169 | } | |
170 | if (t->type == TOKEN822_QUOTE) *s++ = '"'; | |
171 | if (t->type == TOKEN822_LITERAL) *s++ = ']'; | |
172 | if (t->type == TOKEN822_COMMENT) *s++ = ')'; | |
173 | break; | |
174 | } | |
175 | } | |
176 | NSUW | |
177 | --s; | |
178 | sa->len = s - sa->s; | |
179 | return 1; | |
180 | } | |
181 | ||
182 | int token822_unquote(sa,ta) | |
183 | stralloc *sa; | |
184 | token822_alloc *ta; | |
185 | { | |
186 | struct token822 *t; | |
187 | int len; | |
188 | int i; | |
189 | int j; | |
190 | char *s; | |
191 | ||
192 | len = 0; | |
193 | for (i = 0;i < ta->len;++i) | |
194 | { | |
195 | t = ta->t + i; | |
196 | switch(t->type) | |
197 | { | |
198 | case TOKEN822_COMMA: case TOKEN822_AT: case TOKEN822_DOT: case TOKEN822_LEFT: | |
199 | case TOKEN822_RIGHT: case TOKEN822_SEMI: case TOKEN822_COLON: | |
200 | ++len; break; | |
201 | case TOKEN822_LITERAL: | |
202 | len += 2; | |
203 | case TOKEN822_ATOM: case TOKEN822_QUOTE: | |
204 | len += t->slen; | |
205 | } | |
206 | } | |
207 | ||
208 | if (!stralloc_ready(sa,len)) | |
209 | return -1; | |
210 | ||
211 | s = sa->s; | |
212 | ||
213 | for (i = 0;i < ta->len;++i) | |
214 | { | |
215 | t = ta->t + i; | |
216 | switch(t->type) | |
217 | { | |
218 | case TOKEN822_COMMA: *s++ = ','; break; | |
219 | case TOKEN822_AT: *s++ = '@'; break; | |
220 | case TOKEN822_DOT: *s++ = '.'; break; | |
221 | case TOKEN822_LEFT: *s++ = '<'; break; | |
222 | case TOKEN822_RIGHT: *s++ = '>'; break; | |
223 | case TOKEN822_SEMI: *s++ = ';'; break; | |
224 | case TOKEN822_COLON: *s++ = ':'; break; | |
225 | case TOKEN822_ATOM: case TOKEN822_QUOTE: case TOKEN822_LITERAL: | |
226 | if (t->type == TOKEN822_LITERAL) *s++ = '['; | |
227 | for (j = 0;j < t->slen;++j) | |
228 | *s++ = t->s[j]; | |
229 | if (t->type == TOKEN822_LITERAL) *s++ = ']'; | |
230 | break; | |
231 | case TOKEN822_COMMENT: break; | |
232 | } | |
233 | } | |
234 | sa->len = s - sa->s; | |
235 | return 1; | |
236 | } | |
237 | ||
238 | int token822_parse(ta,sa,buf) | |
239 | token822_alloc *ta; | |
240 | stralloc *sa; | |
241 | stralloc *buf; | |
242 | { | |
243 | int i; | |
244 | int salen; | |
245 | int level; | |
246 | struct token822 *t; | |
247 | int numtoks; | |
248 | int numchars; | |
249 | char *cbuf; | |
250 | ||
251 | salen = sa->len; | |
252 | ||
253 | numchars = 0; | |
254 | numtoks = 0; | |
255 | for (i = 0;i < salen;++i) | |
256 | switch(sa->s[i]) | |
257 | { | |
258 | case '.': case ',': case '@': case '<': case '>': case ':': case ';': | |
259 | ++numtoks; break; | |
260 | case ' ': case '\t': case '\r': case '\n': break; | |
261 | case ')': case ']': return 0; | |
262 | /* other control chars and non-ASCII chars are also bad, in theory */ | |
263 | case '(': | |
264 | level = 1; | |
265 | while (level) | |
266 | { | |
267 | if (++i >= salen) return 0; | |
268 | switch(sa->s[i]) | |
269 | { | |
270 | case '(': ++level; break; | |
271 | case ')': --level; break; | |
272 | case '\\': if (++i >= salen) return 0; | |
273 | default: ++numchars; | |
274 | } | |
275 | } | |
276 | ++numtoks; | |
277 | break; | |
278 | case '"': | |
279 | level = 1; | |
280 | while (level) | |
281 | { | |
282 | if (++i >= salen) return 0; | |
283 | switch(sa->s[i]) | |
284 | { | |
285 | case '"': --level; break; | |
286 | case '\\': if (++i >= salen) return 0; | |
287 | default: ++numchars; | |
288 | } | |
289 | } | |
290 | ++numtoks; | |
291 | break; | |
292 | case '[': | |
293 | level = 1; | |
294 | while (level) | |
295 | { | |
296 | if (++i >= salen) return 0; | |
297 | switch(sa->s[i]) | |
298 | { | |
299 | case ']': --level; break; | |
300 | case '\\': if (++i >= salen) return 0; | |
301 | default: ++numchars; | |
302 | } | |
303 | } | |
304 | ++numtoks; | |
305 | break; | |
306 | default: | |
307 | do | |
308 | { | |
212b6f5d | 309 | if (sa->s[i] == '\\') if (++i >= salen) break; |
2117e02e MW |
310 | ++numchars; |
311 | if (++i >= salen) | |
312 | break; | |
313 | } | |
314 | while (atomok(sa->s[i])); | |
315 | --i; | |
316 | ++numtoks; | |
317 | } | |
318 | ||
319 | if (!token822_ready(ta,numtoks)) | |
320 | return -1; | |
321 | if (!stralloc_ready(buf,numchars)) | |
322 | return -1; | |
323 | cbuf = buf->s; | |
324 | ta->len = numtoks; | |
325 | ||
326 | t = ta->t; | |
327 | for (i = 0;i < salen;++i) | |
328 | switch(sa->s[i]) | |
329 | { | |
330 | case '.': t->type = TOKEN822_DOT; ++t; break; | |
331 | case ',': t->type = TOKEN822_COMMA; ++t; break; | |
332 | case '@': t->type = TOKEN822_AT; ++t; break; | |
333 | case '<': t->type = TOKEN822_LEFT; ++t; break; | |
334 | case '>': t->type = TOKEN822_RIGHT; ++t; break; | |
335 | case ':': t->type = TOKEN822_COLON; ++t; break; | |
336 | case ';': t->type = TOKEN822_SEMI; ++t; break; | |
337 | case ' ': case '\t': case '\r': case '\n': break; | |
338 | case '(': | |
339 | t->type = TOKEN822_COMMENT; t->s = cbuf; t->slen = 0; | |
340 | level = 1; | |
341 | while (level) | |
342 | { | |
343 | ++i; /* assert: < salen */ | |
344 | switch(sa->s[i]) | |
345 | { | |
346 | case '(': ++level; break; | |
347 | case ')': --level; break; | |
348 | case '\\': ++i; /* assert: < salen */ | |
349 | default: *cbuf++ = sa->s[i]; ++t->slen; | |
350 | } | |
351 | } | |
352 | ++t; | |
353 | break; | |
354 | case '"': | |
355 | t->type = TOKEN822_QUOTE; t->s = cbuf; t->slen = 0; | |
356 | level = 1; | |
357 | while (level) | |
358 | { | |
359 | ++i; /* assert: < salen */ | |
360 | switch(sa->s[i]) | |
361 | { | |
362 | case '"': --level; break; | |
363 | case '\\': ++i; /* assert: < salen */ | |
364 | default: *cbuf++ = sa->s[i]; ++t->slen; | |
365 | } | |
366 | } | |
367 | ++t; | |
368 | break; | |
369 | case '[': | |
370 | t->type = TOKEN822_LITERAL; t->s = cbuf; t->slen = 0; | |
371 | level = 1; | |
372 | while (level) | |
373 | { | |
374 | ++i; /* assert: < salen */ | |
375 | switch(sa->s[i]) | |
376 | { | |
377 | case ']': --level; break; | |
378 | case '\\': ++i; /* assert: < salen */ | |
379 | default: *cbuf++ = sa->s[i]; ++t->slen; | |
380 | } | |
381 | } | |
382 | ++t; | |
383 | break; | |
384 | default: | |
385 | t->type = TOKEN822_ATOM; t->s = cbuf; t->slen = 0; | |
386 | do | |
387 | { | |
212b6f5d | 388 | if (sa->s[i] == '\\') if (++i >= salen) break; |
2117e02e MW |
389 | *cbuf++ = sa->s[i]; ++t->slen; |
390 | if (++i >= salen) | |
391 | break; | |
392 | } | |
393 | while (atomok(sa->s[i])); | |
394 | atomcheck(t); | |
395 | --i; | |
396 | ++t; | |
397 | } | |
398 | return 1; | |
399 | } | |
400 | ||
401 | static int gotaddr(taout,taaddr,callback) | |
402 | token822_alloc *taout; | |
403 | token822_alloc *taaddr; | |
404 | int (*callback)(); | |
405 | { | |
406 | int i; | |
407 | ||
408 | if (callback(taaddr) != 1) | |
409 | return 0; | |
410 | ||
411 | if (!token822_readyplus(taout,taaddr->len)) | |
412 | return 0; | |
413 | ||
414 | for (i = 0;i < taaddr->len;++i) | |
415 | taout->t[taout->len++] = taaddr->t[i]; | |
416 | ||
417 | taaddr->len = 0; | |
418 | return 1; | |
419 | } | |
420 | ||
421 | int token822_addrlist(taout,taaddr,ta,callback) | |
422 | token822_alloc *taout; | |
423 | token822_alloc *taaddr; | |
424 | token822_alloc *ta; | |
425 | int (*callback)(); | |
426 | { | |
427 | struct token822 *t; | |
428 | struct token822 *beginning; | |
429 | int ingroup; | |
430 | int wordok; | |
431 | ||
432 | taout->len = 0; | |
433 | taaddr->len = 0; | |
434 | ||
435 | if (!token822_readyplus(taout,1)) return -1; | |
436 | if (!token822_readyplus(taaddr,1)) return -1; | |
437 | ||
438 | ingroup = 0; | |
439 | wordok = 1; | |
440 | ||
441 | beginning = ta->t + 2; | |
442 | t = ta->t + ta->len - 1; | |
443 | ||
444 | /* rfc 822 address lists are easy to parse from right to left */ | |
445 | ||
446 | #define FLUSH if (taaddr->len) if (!gotaddr(taout,taaddr,callback)) return -1; | |
447 | #define FLUSHCOMMA if (taaddr->len) { \ | |
448 | if (!gotaddr(taout,taaddr,callback)) return -1; \ | |
449 | if (!token822_append(taout,&comma)) return -1; } | |
450 | #define ADDRLEFT if (!token822_append(taaddr,t--)) return -1; | |
451 | #define OUTLEFT if (!token822_append(taout,t--)) return -1; | |
452 | ||
453 | while (t >= beginning) | |
454 | { | |
455 | switch(t->type) | |
456 | { | |
457 | case TOKEN822_SEMI: | |
458 | FLUSHCOMMA | |
459 | if (ingroup) return 0; | |
460 | ingroup = 1; | |
461 | wordok = 1; | |
462 | break; | |
463 | case TOKEN822_COLON: | |
464 | FLUSH | |
465 | if (!ingroup) return 0; | |
466 | ingroup = 0; | |
467 | while ((t >= beginning) && (t->type != TOKEN822_COMMA)) | |
468 | OUTLEFT | |
469 | if (t >= beginning) | |
470 | OUTLEFT | |
471 | wordok = 1; | |
472 | continue; | |
473 | case TOKEN822_RIGHT: | |
474 | FLUSHCOMMA | |
475 | OUTLEFT | |
476 | while ((t >= beginning) && (t->type != TOKEN822_LEFT)) | |
477 | ADDRLEFT | |
478 | /* important to use address here even if it's empty: <> */ | |
479 | if (!gotaddr(taout,taaddr,callback)) return -1; | |
480 | if (t < beginning) return 0; | |
481 | OUTLEFT | |
482 | while ((t >= beginning) && ((t->type == TOKEN822_COMMENT) || (t->type == TOKEN822_ATOM) || (t->type == TOKEN822_QUOTE) || (t->type == TOKEN822_AT) || (t->type == TOKEN822_DOT))) | |
483 | OUTLEFT | |
484 | wordok = 0; | |
485 | continue; | |
486 | case TOKEN822_ATOM: case TOKEN822_QUOTE: case TOKEN822_LITERAL: | |
487 | if (!wordok) | |
488 | FLUSHCOMMA | |
489 | wordok = 0; | |
490 | ADDRLEFT | |
491 | continue; | |
492 | case TOKEN822_COMMENT: | |
493 | /* comment is lexically a space; shouldn't affect wordok */ | |
494 | break; | |
495 | case TOKEN822_COMMA: | |
496 | FLUSH | |
497 | wordok = 1; | |
498 | break; | |
499 | default: | |
500 | wordok = 1; | |
501 | ADDRLEFT | |
502 | continue; | |
503 | } | |
504 | OUTLEFT | |
505 | } | |
506 | FLUSH | |
507 | ++t; | |
508 | while (t > ta->t) | |
509 | if (!token822_append(taout,--t)) return -1; | |
510 | ||
511 | token822_reverse(taout); | |
512 | return 1; | |
513 | } |