d7482997 |
1 | /* |
2 | * winhelp.c a module to generate Windows .HLP files |
3 | * |
4 | * Documentation of the .HLP file format comes from the excellent |
5 | * HELPFILE.TXT, published alongside the Help decompiler HELPDECO |
6 | * by Manfred Winterhoff. This code would not have been possible |
7 | * without his efforts. Many thanks. |
8 | */ |
9 | |
10 | /* |
11 | * Potential future features: |
12 | * |
13 | * - perhaps LZ77 compression? This appears to cause a phase order |
14 | * problem: it's hard to do the compression until the data to be |
15 | * compressed is finalised, and yet you can't finalise the data |
16 | * to be compressed until you know how much of it is going into |
17 | * which TOPICBLOCK in order to work out the offsets in the |
18 | * topic headers - for which you have to have already done the |
19 | * compression. Perhaps the thing to do is to implement an LZ77 |
20 | * compressor that can guarantee to leave particular bytes in |
21 | * the stream as literals, and then go back and fix the offsets |
22 | * up later. Not pleasant. |
23 | * |
24 | * - It would be good to find out what relation (if any) the LCID |
25 | * record in the |SYSTEM section bears to the codepage used in |
26 | * the actual help text, so as to be able to vary that if the |
27 | * user needs it. For the moment I suspect we're stuck with |
28 | * Win1252. |
29 | * |
30 | * - tables might be nice. |
31 | * |
32 | * Unlikely future features: |
33 | * |
34 | * - Phrase compression sounds harder. It's reasonably easy |
35 | * (though space-costly) to analyse all the text in the file to |
36 | * determine the one key phrase which would save most space if |
37 | * replaced by a reference everywhere it appears; but finding |
38 | * the _1024_ most effective phrases seems much harder since a |
39 | * naive analysis might find lots of phrases that all overlap |
40 | * (so you wouldn't get the saving you expected, as after taking |
41 | * out the first phrase the rest would never crop up). In |
42 | * addition, MS hold US patent number 4955066 which may cover |
43 | * phrase compression, so perhaps it's best just to leave it. |
44 | * |
45 | * Cleanup work: |
46 | * |
47 | * - sort out begin_topic. Ideally we should have a separate |
48 | * topic_macro function that adds to the existing linkdata for |
49 | * the topic, because that's more flexible than a variadic |
50 | * function. This will be fiddly, though: if it's called before |
51 | * whlp_begin_topic then we must buffer macros, and if it's |
52 | * called afterwards then we must be able to go back and modify |
53 | * the linkdata2 of the topic start block. Foo. |
54 | * |
55 | * - find out what should happen if a single topiclink crosses |
56 | * _two_ topicblock boundaries. |
57 | * |
58 | * - What is the BlockSize in a topic header (first 4 bytes of |
59 | * LinkData1 in a type 2 record) supposed to mean? How on earth |
60 | * is it measured? The help file doesn't become perceptibly |
61 | * corrupt if I frob it randomly; and on some occasions taking a |
62 | * bit _out_ of the help file _increases_ that value. I have a |
63 | * feeling it's completely made up and/or vestigial, so for the |
64 | * moment I'm just making up a plausible value as I go along. |
65 | */ |
66 | |
67 | #include <stdlib.h> |
68 | #include <stdio.h> |
69 | #include <string.h> |
70 | #include <assert.h> |
71 | #include <time.h> |
72 | #include <stdarg.h> |
73 | |
74 | #include "halibut.h" |
75 | #include "winhelp.h" |
76 | #include "tree234.h" |
77 | |
63d7b60d |
78 | #ifdef WINHELP_TESTMODE |
d7482997 |
79 | /* |
80 | * This lot is useful for testing. Something like it will also be |
81 | * needed to use this module standalone. |
82 | */ |
83 | #define smalloc malloc |
84 | #define srealloc realloc |
85 | #define sfree free |
f1530049 |
86 | #define snew(type) ( (type *) smalloc (sizeof (type)) ) |
87 | #define snewn(number, type) ( (type *) smalloc ((number) * sizeof (type)) ) |
88 | #define sresize(array, len, type) \ |
89 | ( (type *) srealloc ((array), (len) * sizeof (type)) ) |
d7482997 |
90 | #define lenof(array) ( sizeof(array) / sizeof(*(array)) ) |
91 | char *dupstr(char *s) { |
f1530049 |
92 | char *r = snewn(1+strlen(s), char); strcpy(r,s); return r; |
d7482997 |
93 | } |
94 | #endif |
95 | |
96 | #define UNUSEDARG(x) ( (x) = (x) ) |
97 | |
98 | #define GET_32BIT_LSB_FIRST(cp) \ |
99 | (((unsigned long)(unsigned char)(cp)[0]) | \ |
100 | ((unsigned long)(unsigned char)(cp)[1] << 8) | \ |
101 | ((unsigned long)(unsigned char)(cp)[2] << 16) | \ |
102 | ((unsigned long)(unsigned char)(cp)[3] << 24)) |
103 | |
104 | #define PUT_32BIT_LSB_FIRST(cp, value) do { \ |
105 | (cp)[0] = 0xFF & (value); \ |
106 | (cp)[1] = 0xFF & ((value) >> 8); \ |
107 | (cp)[2] = 0xFF & ((value) >> 16); \ |
108 | (cp)[3] = 0xFF & ((value) >> 24); } while (0) |
109 | |
110 | #define GET_16BIT_LSB_FIRST(cp) \ |
111 | (((unsigned long)(unsigned char)(cp)[0]) | \ |
112 | ((unsigned long)(unsigned char)(cp)[1] << 8)) |
113 | |
114 | #define PUT_16BIT_LSB_FIRST(cp, value) do { \ |
115 | (cp)[0] = 0xFF & (value); \ |
116 | (cp)[1] = 0xFF & ((value) >> 8); } while (0) |
117 | |
118 | #define MAX_PAGE_SIZE 0x800 /* max page size in any B-tree */ |
119 | #define TOPIC_BLKSIZE 4096 /* implied by version/flags combo */ |
120 | |
121 | typedef struct WHLP_TOPIC_tag context; |
122 | |
123 | struct file { |
124 | char *name; /* file name, will need freeing */ |
125 | unsigned char *data; /* file data, will need freeing */ |
126 | int pos; /* position for adding data */ |
127 | int len; /* # of meaningful bytes in data */ |
128 | int size; /* # of allocated bytes in data */ |
129 | int fileoffset; /* offset in the real .HLP file */ |
130 | }; |
131 | |
132 | struct indexrec { |
133 | char *term; /* index term, will need freeing */ |
134 | context *topic; /* topic it links to */ |
135 | int count, offset; /* used when building |KWDATA */ |
136 | }; |
137 | |
138 | struct topiclink { |
139 | int topicoffset, topicpos; /* for referencing from elsewhere */ |
140 | int recordtype; |
141 | int len1, len2; |
142 | unsigned char *data1, *data2; |
143 | context *context; |
144 | struct topiclink *nonscroll, *scroll, *nexttopic; |
145 | int block_size; /* for the topic header - *boggle* */ |
146 | }; |
147 | |
148 | struct WHLP_TOPIC_tag { |
149 | char *name; /* needs freeing */ |
150 | unsigned long hash; |
151 | struct topiclink *link; /* this provides TOPICOFFSET */ |
152 | context *browse_next, *browse_prev; |
153 | char *title; /* needs freeing */ |
154 | int index; /* arbitrary number */ |
155 | }; |
156 | |
157 | struct fontdesc { |
158 | char *font; |
159 | int family, rendition, halfpoints; |
160 | int r, g, b; |
161 | }; |
162 | |
163 | struct WHLP_tag { |
164 | tree234 *files; /* stores `struct file' */ |
165 | tree234 *pre_contexts; /* stores `context' */ |
166 | tree234 *contexts; /* also stores `context' */ |
167 | tree234 *titles; /* _also_ stores `context' */ |
168 | tree234 *text; /* stores `struct topiclink' */ |
169 | tree234 *index; /* stores `struct indexrec' */ |
170 | tree234 *tabstops; /* stores `int' */ |
171 | tree234 *fontnames; /* stores `char *' */ |
172 | tree234 *fontdescs; /* stores `struct fontdesc' */ |
173 | struct file *systemfile; /* the |SYSTEM internal file */ |
174 | context *ptopic; /* primary topic */ |
175 | struct topiclink *prevtopic; /* to link type-2 records together */ |
176 | struct topiclink *link; /* while building a topiclink */ |
177 | unsigned char linkdata1[TOPIC_BLKSIZE]; /* while building a topiclink */ |
178 | unsigned char linkdata2[TOPIC_BLKSIZE]; /* while building a topiclink */ |
179 | int topicblock_remaining; /* while building |TOPIC section */ |
180 | int lasttopiclink; /* while building |TOPIC section */ |
181 | int firsttopiclink_offset; /* while building |TOPIC section */ |
182 | int lasttopicstart; /* while building |TOPIC section */ |
183 | int para_flags; |
184 | int para_attrs[7]; |
185 | int ncontexts; |
83ac0deb |
186 | int picture_index; |
d7482997 |
187 | }; |
188 | |
189 | /* Functions to return the index and leaf data for B-tree contents. */ |
190 | typedef int (*bt_index_fn)(const void *item, unsigned char *outbuf); |
191 | typedef int (*bt_leaf_fn)(const void *item, unsigned char *outbuf); |
192 | |
193 | /* Forward references. */ |
194 | static void whlp_para_reset(WHLP h); |
195 | static struct file *whlp_new_file(WHLP h, char *name); |
196 | static void whlp_file_add(struct file *f, const void *data, int len); |
197 | static void whlp_file_add_char(struct file *f, int data); |
198 | static void whlp_file_add_short(struct file *f, int data); |
199 | static void whlp_file_add_long(struct file *f, int data); |
83ac0deb |
200 | static void whlp_file_add_cushort(struct file *f, int data); |
595b8c0c |
201 | #if 0 /* currently unused */ |
83ac0deb |
202 | static void whlp_file_add_csshort(struct file *f, int data); |
595b8c0c |
203 | #endif |
83ac0deb |
204 | static void whlp_file_add_culong(struct file *f, int data); |
595b8c0c |
205 | #if 0 /* currently unused */ |
83ac0deb |
206 | static void whlp_file_add_cslong(struct file *f, int data); |
595b8c0c |
207 | #endif |
d7482997 |
208 | static void whlp_file_fill(struct file *f, int len); |
209 | static void whlp_file_seek(struct file *f, int pos, int whence); |
210 | static int whlp_file_offset(struct file *f); |
211 | |
212 | /* ---------------------------------------------------------------------- |
213 | * Fiddly little functions: B-tree compare, index and leaf functions. |
214 | */ |
215 | |
216 | /* The master index maps file names to help-file offsets. */ |
217 | |
218 | static int filecmp(void *av, void *bv) |
219 | { |
220 | const struct file *a = (const struct file *)av; |
221 | const struct file *b = (const struct file *)bv; |
222 | return strcmp(a->name, b->name); |
223 | } |
224 | |
225 | static int fileindex(const void *av, unsigned char *outbuf) |
226 | { |
227 | const struct file *a = (const struct file *)av; |
228 | int len = 1+strlen(a->name); |
229 | memcpy(outbuf, a->name, len); |
230 | return len; |
231 | } |
232 | |
233 | static int fileleaf(const void *av, unsigned char *outbuf) |
234 | { |
235 | const struct file *a = (const struct file *)av; |
236 | int len = 1+strlen(a->name); |
237 | memcpy(outbuf, a->name, len); |
238 | PUT_32BIT_LSB_FIRST(outbuf+len, a->fileoffset); |
239 | return len+4; |
240 | } |
241 | |
242 | /* The |CONTEXT internal file maps help context hashes to TOPICOFFSETs. */ |
243 | |
244 | static int ctxcmp(void *av, void *bv) |
245 | { |
246 | const context *a = (const context *)av; |
247 | const context *b = (const context *)bv; |
248 | if ((signed long)a->hash < (signed long)b->hash) |
249 | return -1; |
250 | if ((signed long)a->hash > (signed long)b->hash) |
251 | return +1; |
252 | return 0; |
253 | } |
254 | |
255 | static int ctxindex(const void *av, unsigned char *outbuf) |
256 | { |
257 | const context *a = (const context *)av; |
258 | PUT_32BIT_LSB_FIRST(outbuf, a->hash); |
259 | return 4; |
260 | } |
261 | |
262 | static int ctxleaf(const void *av, unsigned char *outbuf) |
263 | { |
264 | const context *a = (const context *)av; |
265 | PUT_32BIT_LSB_FIRST(outbuf, a->hash); |
266 | PUT_32BIT_LSB_FIRST(outbuf+4, a->link->topicoffset); |
267 | return 8; |
268 | } |
269 | |
270 | /* The |TTLBTREE internal file maps TOPICOFFSETs to title strings. */ |
271 | |
272 | static int ttlcmp(void *av, void *bv) |
273 | { |
274 | const context *a = (const context *)av; |
275 | const context *b = (const context *)bv; |
276 | if (a->link->topicoffset < b->link->topicoffset) |
277 | return -1; |
278 | if (a->link->topicoffset > b->link->topicoffset) |
279 | return +1; |
280 | return 0; |
281 | } |
282 | |
283 | static int ttlindex(const void *av, unsigned char *outbuf) |
284 | { |
285 | const context *a = (const context *)av; |
286 | PUT_32BIT_LSB_FIRST(outbuf, a->link->topicoffset); |
287 | return 4; |
288 | } |
289 | |
290 | static int ttlleaf(const void *av, unsigned char *outbuf) |
291 | { |
292 | const context *a = (const context *)av; |
293 | int slen; |
294 | PUT_32BIT_LSB_FIRST(outbuf, a->link->topicoffset); |
295 | slen = 1+strlen(a->title); |
296 | memcpy(outbuf+4, a->title, slen); |
297 | return 4+slen; |
298 | } |
299 | |
300 | /* The |KWBTREE internal file maps index strings to TOPICOFFSETs. */ |
301 | |
302 | static int idxcmp(void *av, void *bv) |
303 | { |
304 | const struct indexrec *a = (const struct indexrec *)av; |
305 | const struct indexrec *b = (const struct indexrec *)bv; |
306 | int cmp; |
307 | if ( (cmp = strcmp(a->term, b->term)) != 0) |
308 | return cmp; |
309 | /* Now sort on the index field of the topics. */ |
310 | if (a->topic->index < b->topic->index) |
311 | return -1; |
312 | if (a->topic->index > b->topic->index) |
313 | return +1; |
314 | return 0; |
315 | } |
316 | |
317 | static int idxindex(const void *av, unsigned char *outbuf) |
318 | { |
319 | const struct indexrec *a = (const struct indexrec *)av; |
320 | int len = 1+strlen(a->term); |
321 | memcpy(outbuf, a->term, len); |
322 | return len; |
323 | } |
324 | |
325 | static int idxleaf(const void *av, unsigned char *outbuf) |
326 | { |
327 | const struct indexrec *a = (const struct indexrec *)av; |
328 | int len = 1+strlen(a->term); |
329 | memcpy(outbuf, a->term, len); |
330 | PUT_16BIT_LSB_FIRST(outbuf+len, a->count); |
331 | PUT_32BIT_LSB_FIRST(outbuf+len+2, a->offset); |
332 | return len+6; |
333 | } |
334 | |
335 | /* |
336 | * The internal `tabstops' B-tree stores pointers-to-int. Sorting |
337 | * is by the low 16 bits of the number (above that is flags). |
338 | */ |
339 | |
340 | static int tabcmp(void *av, void *bv) |
341 | { |
342 | const int *a = (const int *)av; |
343 | const int *b = (const int *)bv; |
344 | if ((*a & 0xFFFF) < (*b & 0xFFFF)) |
345 | return -1; |
346 | if ((*a & 0xFFFF) > (*b & 0xFFFF)) |
347 | return +1; |
348 | return 0; |
349 | } |
350 | |
351 | /* The internal `fontnames' B-tree stores strings. */ |
352 | static int fontcmp(void *av, void *bv) |
353 | { |
354 | const char *a = (const char *)av; |
355 | const char *b = (const char *)bv; |
356 | return strcmp(a,b); |
357 | } |
358 | |
359 | /* ---------------------------------------------------------------------- |
360 | * Manage help contexts and topics. |
361 | */ |
362 | |
363 | /* |
364 | * This is the code to compute the hash of a context name. Copied |
365 | * straight from Winterhoff's documentation. |
366 | */ |
367 | static unsigned long context_hash(char *context) |
368 | { |
369 | signed char bytemapping[256] = |
370 | "\x00\xD1\xD2\xD3\xD4\xD5\xD6\xD7\xD8\xD9\xDA\xDB\xDC\xDD\xDE\xDF" |
371 | "\xE0\xE1\xE2\xE3\xE4\xE5\xE6\xE7\xE8\xE9\xEA\xEB\xEC\xED\xEE\xEF" |
372 | "\xF0\x0B\xF2\xF3\xF4\xF5\xF6\xF7\xF8\xF9\xFA\xFB\xFC\xFD\x0C\xFF" |
373 | "\x0A\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0A\x0B\x0C\x0D\x0E\x0F" |
374 | "\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1A\x1B\x1C\x1D\x1E\x1F" |
375 | "\x20\x21\x22\x23\x24\x25\x26\x27\x28\x29\x2A\x0B\x0C\x0D\x0E\x0D" |
376 | "\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1A\x1B\x1C\x1D\x1E\x1F" |
377 | "\x20\x21\x22\x23\x24\x25\x26\x27\x28\x29\x2A\x2B\x2C\x2D\x2E\x2F" |
378 | "\x50\x51\x52\x53\x54\x55\x56\x57\x58\x59\x5A\x5B\x5C\x5D\x5E\x5F" |
379 | "\x60\x61\x62\x63\x64\x65\x66\x67\x68\x69\x6A\x6B\x6C\x6D\x6E\x6F" |
380 | "\x70\x71\x72\x73\x74\x75\x76\x77\x78\x79\x7A\x7B\x7C\x7D\x7E\x7F" |
381 | "\x80\x81\x82\x83\x0B\x85\x86\x87\x88\x89\x8A\x8B\x8C\x8D\x8E\x8F" |
382 | "\x90\x91\x92\x93\x94\x95\x96\x97\x98\x99\x9A\x9B\x9C\x9D\x9E\x9F" |
383 | "\xA0\xA1\xA2\xA3\xA4\xA5\xA6\xA7\xA8\xA9\xAA\xAB\xAC\xAD\xAE\xAF" |
384 | "\xB0\xB1\xB2\xB3\xB4\xB5\xB6\xB7\xB8\xB9\xBA\xBB\xBC\xBD\xBE\xBF" |
385 | "\xC0\xC1\xC2\xC3\xC4\xC5\xC6\xC7\xC8\xC9\xCA\xCB\xCC\xCD\xCE\xCF"; |
386 | unsigned long hash; |
387 | |
d7482997 |
388 | /* |
389 | * The hash algorithm starts the hash at 0 and updates it with |
390 | * each character. Therefore, logically, the hash of an empty |
391 | * string should be 0 (it starts at 0 and is never updated); |
392 | * but Winterhoff says it is in fact 1. Shouldn't matter, since |
393 | * I never plan to use empty context names, but I'll stick the |
394 | * special case in here anyway. |
395 | */ |
396 | if (!*context) |
397 | return 1; |
398 | |
399 | /* |
400 | * Now compute the hash in the normal way. |
401 | */ |
402 | hash = 0; |
403 | while (*context) { |
9ae3b6f0 |
404 | /* |
405 | * Be careful of overflowing `unsigned long', for maximum |
406 | * portability. |
407 | */ |
408 | |
409 | /* |
410 | * Multiply `hash' by 43. |
411 | */ |
412 | { |
413 | unsigned long bottom, top; |
414 | bottom = (hash & 0xFFFFUL) * 43; |
415 | top = ((hash >> 16) & 0xFFFFUL) * 43; |
416 | top += (bottom >> 16); |
417 | bottom &= 0xFFFFUL; |
418 | top &= 0xFFFFUL; |
419 | hash = (top << 16) | bottom; |
420 | } |
421 | |
422 | /* |
423 | * Add the mapping value for this byte to `hash'. |
424 | */ |
425 | { |
426 | int val = bytemapping[(unsigned char)*context]; |
427 | |
428 | if (val > 0 && hash > (0xFFFFFFFFUL - val)) { |
429 | hash -= (0xFFFFFFFFUL - val) + 1; |
f89b2ee6 |
430 | } else if (val < 0 && hash < (unsigned long)-val) { |
9ae3b6f0 |
431 | hash += (0xFFFFFFFFUL + val) + 1; |
432 | } else |
433 | hash += val; |
434 | } |
435 | |
d7482997 |
436 | context++; |
437 | } |
438 | return hash; |
439 | } |
440 | |
441 | WHLP_TOPIC whlp_register_topic(WHLP h, char *context_name, char **clash) |
442 | { |
f1530049 |
443 | context *ctx = snew(context); |
d7482997 |
444 | context *otherctx; |
445 | |
446 | /* |
447 | * Index contexts in order of creation, just so there's some |
448 | * sort of non-arbitrary ordering in the index B-tree. Call me |
449 | * fussy, but I don't like indexing on pointer values because I |
450 | * prefer the code to be deterministic when run under different |
451 | * C libraries. |
452 | */ |
453 | ctx->index = h->ncontexts++; |
454 | ctx->browse_prev = ctx->browse_next = NULL; |
455 | |
456 | if (context_name) { |
457 | /* |
458 | * We have a context name, which means we can put this |
459 | * context straight into the `contexts' tree. |
460 | */ |
461 | ctx->name = dupstr(context_name); |
462 | ctx->hash = context_hash(context_name); |
463 | otherctx = add234(h->contexts, ctx); |
464 | if (otherctx != ctx) { |
465 | /* |
466 | * Hash clash. Destroy the new context and return NULL, |
467 | * providing the clashing string. |
468 | */ |
469 | sfree(ctx->name); |
470 | sfree(ctx); |
471 | if (clash) *clash = otherctx->name; |
472 | return NULL; |
473 | } |
474 | } else { |
475 | /* |
476 | * We have no context name yet. Enter this into the |
477 | * pre_contexts tree of anonymous topics, which we will go |
478 | * through later and allocate unique context names and hash |
479 | * values. |
480 | */ |
481 | ctx->name = NULL; |
482 | addpos234(h->pre_contexts, ctx, count234(h->pre_contexts)); |
483 | } |
484 | return ctx; |
485 | } |
486 | |
487 | void whlp_prepare(WHLP h) |
488 | { |
489 | /* |
490 | * We must go through pre_contexts and allocate a context ID to |
491 | * each anonymous context, making sure it doesn't clash with |
492 | * the existing contexts. |
493 | * |
494 | * Our own context IDs will just be of the form `t00000001', |
495 | * and we'll increment the number each time and skip over any |
496 | * IDs that clash with existing context names. |
497 | */ |
498 | int ctx_num = 0; |
499 | context *ctx, *otherctx; |
500 | |
501 | while ( (ctx = index234(h->pre_contexts, 0)) != NULL ) { |
502 | delpos234(h->pre_contexts, 0); |
f1530049 |
503 | ctx->name = snewn(20, char); |
d7482997 |
504 | do { |
505 | sprintf(ctx->name, "t%08d", ctx_num++); |
506 | ctx->hash = context_hash(ctx->name); |
507 | otherctx = add234(h->contexts, ctx); |
508 | } while (otherctx != ctx); |
509 | } |
510 | |
511 | /* |
512 | * Ensure paragraph attributes are clear for the start of text |
513 | * output. |
514 | */ |
515 | whlp_para_reset(h); |
516 | } |
517 | |
518 | char *whlp_topic_id(WHLP_TOPIC topic) |
519 | { |
520 | return topic->name; |
521 | } |
522 | |
523 | void whlp_begin_topic(WHLP h, WHLP_TOPIC topic, char *title, ...) |
524 | { |
f1530049 |
525 | struct topiclink *link = snew(struct topiclink); |
d7482997 |
526 | int len, slen; |
527 | char *macro; |
528 | va_list ap; |
529 | |
530 | link->nexttopic = NULL; |
531 | if (h->prevtopic) |
532 | h->prevtopic->nexttopic = link; |
533 | h->prevtopic = link; |
534 | |
535 | link->nonscroll = link->scroll = NULL; |
536 | link->context = topic; |
537 | link->block_size = 0; |
538 | |
539 | link->recordtype = 2; /* topic header */ |
540 | link->len1 = 4*7; /* standard linkdata1 size */ |
f1530049 |
541 | link->data1 = snewn(link->len1, unsigned char); |
d7482997 |
542 | |
543 | slen = strlen(title); |
544 | assert(slen+1 <= TOPIC_BLKSIZE); |
545 | memcpy(h->linkdata2, title, slen+1); |
546 | len = slen+1; |
547 | |
548 | va_start(ap, title); |
549 | while ( (macro = va_arg(ap, char *)) != NULL) { |
550 | slen = strlen(macro); |
551 | assert(len+slen+1 <= TOPIC_BLKSIZE); |
552 | memcpy(h->linkdata2+len, macro, slen+1); |
553 | len += slen+1; |
554 | } |
555 | va_end(ap); |
556 | len--; /* lose the last \0 on the last macro */ |
557 | |
558 | link->len2 = len; |
f1530049 |
559 | link->data2 = snewn(link->len2, unsigned char); |
d7482997 |
560 | memcpy(link->data2, h->linkdata2, link->len2); |
561 | |
562 | topic->title = dupstr(title); |
563 | topic->link = link; |
564 | |
565 | addpos234(h->text, link, count234(h->text)); |
566 | } |
567 | |
568 | void whlp_browse_link(WHLP h, WHLP_TOPIC before, WHLP_TOPIC after) |
569 | { |
570 | UNUSEDARG(h); |
571 | |
572 | /* |
573 | * See if the `before' topic is already linked to another one, |
574 | * and break the link to that if so. Likewise the `after' |
575 | * topic. |
576 | */ |
577 | if (before->browse_next) |
578 | before->browse_next->browse_prev = NULL; |
579 | if (after->browse_prev) |
580 | after->browse_prev->browse_next = NULL; |
581 | before->browse_next = after; |
582 | after->browse_prev = before; |
583 | } |
584 | |
585 | /* ---------------------------------------------------------------------- |
586 | * Manage the actual generation of paragraph and text records. |
587 | */ |
588 | |
589 | static void whlp_linkdata(WHLP h, int which, int c) |
590 | { |
591 | int *len = (which == 1 ? &h->link->len1 : &h->link->len2); |
ee90d1f0 |
592 | unsigned char *data = (which == 1 ? h->linkdata1 : h->linkdata2); |
d7482997 |
593 | assert(*len < TOPIC_BLKSIZE); |
594 | data[(*len)++] = c; |
595 | } |
596 | |
597 | static void whlp_linkdata_short(WHLP h, int which, int data) |
598 | { |
599 | whlp_linkdata(h, which, data & 0xFF); |
600 | whlp_linkdata(h, which, (data >> 8) & 0xFF); |
601 | } |
602 | |
603 | static void whlp_linkdata_long(WHLP h, int which, int data) |
604 | { |
605 | whlp_linkdata(h, which, data & 0xFF); |
606 | whlp_linkdata(h, which, (data >> 8) & 0xFF); |
607 | whlp_linkdata(h, which, (data >> 16) & 0xFF); |
608 | whlp_linkdata(h, which, (data >> 24) & 0xFF); |
609 | } |
610 | |
611 | static void whlp_linkdata_cushort(WHLP h, int which, int data) |
612 | { |
613 | if (data <= 0x7F) { |
614 | whlp_linkdata(h, which, data*2); |
615 | } else { |
616 | whlp_linkdata(h, which, 1 + (data%128 * 2)); |
617 | whlp_linkdata(h, which, data/128); |
618 | } |
619 | } |
620 | |
621 | static void whlp_linkdata_csshort(WHLP h, int which, int data) |
622 | { |
623 | if (data >= -0x40 && data <= 0x3F) |
624 | whlp_linkdata_cushort(h, which, data+64); |
625 | else |
626 | whlp_linkdata_cushort(h, which, data+16384); |
627 | } |
628 | |
629 | static void whlp_linkdata_culong(WHLP h, int which, int data) |
630 | { |
631 | if (data <= 0x7FFF) { |
632 | whlp_linkdata_short(h, which, data*2); |
633 | } else { |
634 | whlp_linkdata_short(h, which, 1 + (data%32768 * 2)); |
635 | whlp_linkdata_short(h, which, data/32768); |
636 | } |
637 | } |
638 | |
639 | static void whlp_linkdata_cslong(WHLP h, int which, int data) |
640 | { |
641 | if (data >= -0x4000 && data <= 0x3FFF) |
642 | whlp_linkdata_culong(h, which, data+16384); |
643 | else |
644 | whlp_linkdata_culong(h, which, data+67108864); |
645 | } |
646 | |
647 | static void whlp_para_reset(WHLP h) |
648 | { |
649 | int *p; |
650 | |
651 | h->para_flags = 0; |
652 | |
653 | while ( (p = index234(h->tabstops, 0)) != NULL) { |
654 | delpos234(h->tabstops, 0); |
655 | sfree(p); |
656 | } |
657 | } |
658 | |
659 | void whlp_para_attr(WHLP h, int attr_id, int attr_param) |
660 | { |
661 | if (attr_id >= WHLP_PARA_SPACEABOVE && |
662 | attr_id <= WHLP_PARA_FIRSTLINEINDENT) { |
663 | h->para_flags |= 1 << attr_id; |
664 | h->para_attrs[attr_id] = attr_param; |
665 | } else if (attr_id == WHLP_PARA_ALIGNMENT) { |
666 | h->para_flags &= ~0xC00; |
667 | if (attr_param == WHLP_ALIGN_RIGHT) |
668 | h->para_flags |= 0x400; |
669 | else if (attr_param == WHLP_ALIGN_CENTRE) |
670 | h->para_flags |= 0x800; |
671 | } |
672 | } |
673 | |
674 | void whlp_set_tabstop(WHLP h, int tabstop, int alignment) |
675 | { |
676 | int *p; |
677 | |
678 | if (alignment == WHLP_ALIGN_CENTRE) |
679 | tabstop |= 0x20000; |
680 | if (alignment == WHLP_ALIGN_RIGHT) |
681 | tabstop |= 0x10000; |
682 | |
f1530049 |
683 | p = snew(int); |
d7482997 |
684 | *p = tabstop; |
685 | add234(h->tabstops, p); |
686 | h->para_flags |= 0x0200; |
687 | } |
688 | |
689 | void whlp_begin_para(WHLP h, int para_type) |
690 | { |
f1530049 |
691 | struct topiclink *link = snew(struct topiclink); |
d7482997 |
692 | int i; |
693 | |
694 | /* |
695 | * Clear these to NULL out of paranoia, although in records |
696 | * that aren't type 2 they should never actually be needed. |
697 | */ |
698 | link->nexttopic = NULL; |
699 | link->context = NULL; |
700 | link->nonscroll = link->scroll = NULL; |
701 | |
702 | link->recordtype = 32; /* text record */ |
703 | |
704 | h->link = link; |
705 | link->len1 = link->len2 = 0; |
706 | link->data1 = h->linkdata1; |
707 | link->data2 = h->linkdata2; |
708 | |
709 | if (para_type == WHLP_PARA_NONSCROLL && h->prevtopic && |
710 | !h->prevtopic->nonscroll) |
711 | h->prevtopic->nonscroll = link; |
712 | if (para_type == WHLP_PARA_SCROLL && h->prevtopic && |
713 | !h->prevtopic->scroll) |
714 | h->prevtopic->scroll = link; |
715 | |
716 | /* |
717 | * Now we're ready to start accumulating stuff in linkdata1 and |
718 | * linkdata2. Next we build up the paragraph info. Note that |
719 | * the TopicSize (cslong: size of LinkData1 minus the topicsize |
720 | * and topiclength fields) and TopicLength (cushort: size of |
721 | * LinkData2) fields are missing; we will put those on when we |
722 | * end the paragraph. |
723 | */ |
724 | whlp_linkdata(h, 1, 0); /* must-be-0x00 */ |
725 | whlp_linkdata(h, 1, 0x80); /* must-be-0x80 */ |
726 | whlp_linkdata_short(h, 1, 0); /* Winterhoff says `id'; always 0 AFAICT */ |
727 | whlp_linkdata_short(h, 1, h->para_flags); |
728 | for (i = WHLP_PARA_SPACEABOVE; i <= WHLP_PARA_FIRSTLINEINDENT; i++) { |
729 | if (h->para_flags & (1<<i)) |
730 | whlp_linkdata_csshort(h, 1, h->para_attrs[i]); |
731 | } |
732 | if (h->para_flags & 0x0200) { |
733 | int ntabs; |
734 | /* |
735 | * Write out tab stop data. |
736 | */ |
737 | ntabs = count234(h->tabstops); |
738 | whlp_linkdata_csshort(h, 1, ntabs); |
739 | for (i = 0; i < ntabs; i++) { |
740 | int tab, *tabp; |
741 | tabp = index234(h->tabstops, i); |
742 | tab = *tabp; |
743 | if (tab & 0x30000) |
744 | tab |= 0x4000; |
745 | whlp_linkdata_cushort(h, 1, tab & 0xFFFF); |
746 | if (tab & 0x4000) |
747 | whlp_linkdata_cushort(h, 1, tab >> 16); |
748 | } |
749 | } |
750 | |
751 | /* |
752 | * Fine. Now we're ready to start writing actual text and |
753 | * formatting commands. |
754 | */ |
755 | } |
756 | |
757 | void whlp_set_font(WHLP h, int font_id) |
758 | { |
759 | /* |
760 | * Write a NUL into linkdata2 to cause the reader to flip over |
761 | * to linkdata1 to see the formatting command. |
762 | */ |
763 | whlp_linkdata(h, 2, 0); |
764 | /* |
765 | * Now the formatting command is 0x80 followed by a short. |
766 | */ |
767 | whlp_linkdata(h, 1, 0x80); |
768 | whlp_linkdata_short(h, 1, font_id); |
769 | } |
770 | |
771 | void whlp_start_hyperlink(WHLP h, WHLP_TOPIC target) |
772 | { |
773 | /* |
774 | * Write a NUL into linkdata2. |
775 | */ |
776 | whlp_linkdata(h, 2, 0); |
777 | /* |
778 | * Now the formatting command is 0xE3 followed by the context |
779 | * hash. |
780 | */ |
781 | whlp_linkdata(h, 1, 0xE3); |
782 | whlp_linkdata_long(h, 1, target->hash); |
783 | } |
784 | |
785 | void whlp_end_hyperlink(WHLP h) |
786 | { |
787 | /* |
788 | * Write a NUL into linkdata2. |
789 | */ |
790 | whlp_linkdata(h, 2, 0); |
791 | /* |
792 | * Now the formatting command is 0x89. |
793 | */ |
794 | whlp_linkdata(h, 1, 0x89); |
795 | } |
796 | |
797 | void whlp_tab(WHLP h) |
798 | { |
799 | /* |
800 | * Write a NUL into linkdata2. |
801 | */ |
802 | whlp_linkdata(h, 2, 0); |
803 | /* |
804 | * Now the formatting command is 0x83. |
805 | */ |
806 | whlp_linkdata(h, 1, 0x83); |
807 | } |
808 | |
83ac0deb |
809 | int whlp_add_picture(WHLP h, int wd, int ht, const void *vpicdata, |
810 | const unsigned long *palette) |
811 | { |
812 | struct file *f; |
813 | char filename[80]; |
814 | const unsigned char *picdata = (const unsigned char *)vpicdata; |
815 | int picstart, picoff, imgoff, imgstart; |
816 | int palettelen; |
817 | int i, index; |
818 | int wdrounded; |
819 | |
820 | /* |
821 | * Determine the limit of the colour palette. |
822 | */ |
823 | palettelen = -1; |
824 | for (i = 0; i < wd*ht; i++) |
825 | if (palettelen < picdata[i]) |
826 | palettelen = picdata[i]; |
827 | palettelen++; |
828 | |
829 | /* |
830 | * Round up the width to the next multiple of 4. |
831 | */ |
832 | wdrounded = (wd + 3) & ~3; |
833 | |
834 | index = h->picture_index++; |
835 | sprintf(filename, "bm%d", index); |
836 | |
837 | f = whlp_new_file(h, filename); |
838 | whlp_file_add_short(f, 0x706C); /* magic number */ |
839 | whlp_file_add_short(f, 1); /* number of pictures */ |
840 | picoff = whlp_file_offset(f); |
841 | whlp_file_add_long(f, 0); /* offset of first (only) picture */ |
842 | picstart = whlp_file_offset(f); |
843 | whlp_file_add_char(f, 6); /* DIB */ |
844 | whlp_file_add_char(f, 0); /* no packing */ |
845 | whlp_file_add_culong(f, 100); /* xdpi */ |
846 | whlp_file_add_culong(f, 100); /* ydpi */ |
847 | whlp_file_add_cushort(f, 1); /* planes (?) */ |
848 | whlp_file_add_cushort(f, 8); /* bitcount */ |
849 | whlp_file_add_culong(f, wd); /* width */ |
850 | whlp_file_add_culong(f, ht); /* height */ |
851 | whlp_file_add_culong(f, palettelen);/* colours used */ |
852 | whlp_file_add_culong(f, palettelen);/* colours important */ |
853 | whlp_file_add_culong(f, wdrounded*ht); /* `compressed' data size */ |
854 | whlp_file_add_culong(f, 0); /* hotspot size (no hotspots) */ |
855 | imgoff = whlp_file_offset(f); |
856 | whlp_file_add_long(f, 0); /* offset of `compressed' data */ |
857 | whlp_file_add_long(f, 0); /* offset of hotspot data (none) */ |
858 | for (i = 0; i < palettelen; i++) |
859 | whlp_file_add_long(f, palette[i]); |
860 | imgstart = whlp_file_offset(f); |
861 | /* |
862 | * Windows Help files, like BMP, start from the bottom scanline. |
863 | */ |
864 | for (i = ht; i-- > 0 ;) { |
865 | whlp_file_add(f, picdata + i*wd, wd); |
866 | if (wd < wdrounded) |
867 | whlp_file_add(f, "\0\0\0", wdrounded - wd); |
868 | } |
869 | |
870 | /* Now go back and fix up internal offsets */ |
871 | whlp_file_seek(f, picoff, 0); |
872 | whlp_file_add_long(f, picstart); |
873 | whlp_file_seek(f, imgoff, 0); |
874 | whlp_file_add_long(f, imgstart - picstart); |
875 | whlp_file_seek(f, 0, 2); |
876 | |
877 | return index; |
878 | } |
879 | |
880 | void whlp_ref_picture(WHLP h, int picid) |
881 | { |
882 | /* |
883 | * Write a NUL into linkdata2. |
884 | */ |
885 | whlp_linkdata(h, 2, 0); |
886 | /* |
887 | * Write the formatting command and its followup data to |
888 | * specify a picture in a separate file. |
889 | */ |
890 | whlp_linkdata(h, 1, 0x86); |
891 | whlp_linkdata(h, 1, 3); /* type (picture without hotspots) */ |
892 | whlp_linkdata_cslong(h, 1, 4); |
893 | whlp_linkdata_short(h, 1, 0); |
894 | whlp_linkdata_short(h, 1, picid); |
895 | } |
896 | |
d7482997 |
897 | void whlp_text(WHLP h, char *text) |
898 | { |
899 | while (*text) { |
900 | whlp_linkdata(h, 2, *text++); |
901 | } |
902 | } |
903 | |
904 | void whlp_end_para(WHLP h) |
905 | { |
906 | int data1cut; |
907 | |
908 | /* |
909 | * Round off the paragraph with 0x82 and 0xFF formatting |
910 | * commands. Each requires a NUL in linkdata2. |
911 | */ |
912 | whlp_linkdata(h, 2, 0); |
913 | whlp_linkdata(h, 1, 0x82); |
914 | whlp_linkdata(h, 2, 0); |
915 | whlp_linkdata(h, 1, 0xFF); |
916 | |
917 | /* |
918 | * Now finish up: create the header of linkdata1 (TopicLength |
919 | * and TopicSize fields), allocate the real linkdata1 and |
920 | * linkdata2 fields, and copy them out of the buffers in h. |
921 | * Then insert the finished topiclink into the `text' tree, and |
922 | * clean up. |
923 | */ |
924 | data1cut = h->link->len1; |
925 | whlp_linkdata_cslong(h, 1, data1cut); |
926 | whlp_linkdata_cushort(h, 1, h->link->len2); |
927 | |
f1530049 |
928 | h->link->data1 = snewn(h->link->len1, unsigned char); |
d7482997 |
929 | memcpy(h->link->data1, h->linkdata1 + data1cut, h->link->len1 - data1cut); |
930 | memcpy(h->link->data1 + h->link->len1 - data1cut, h->linkdata1, data1cut); |
f1530049 |
931 | h->link->data2 = snewn(h->link->len2, unsigned char); |
d7482997 |
932 | memcpy(h->link->data2, h->linkdata2, h->link->len2); |
933 | |
934 | addpos234(h->text, h->link, count234(h->text)); |
935 | |
936 | /* Hack: accumulate the `blocksize' parameter in the topic header. */ |
937 | if (h->prevtopic) |
938 | h->prevtopic->block_size += 21 + h->link->len1 + h->link->len2; |
939 | |
940 | h->link = NULL; /* this is now in the tree */ |
941 | |
942 | whlp_para_reset(h); |
943 | } |
944 | |
945 | /* ---------------------------------------------------------------------- |
946 | * Manage the layout and generation of the |TOPIC section. |
947 | */ |
948 | |
949 | static void whlp_topicsect_write(WHLP h, struct file *f, void *data, int len, |
950 | int can_break) |
951 | { |
952 | unsigned char *p = (unsigned char *)data; |
953 | |
954 | if (h->topicblock_remaining <= 0 || |
955 | h->topicblock_remaining < can_break) { |
956 | /* |
957 | * Start a new block. |
958 | */ |
959 | if (h->topicblock_remaining > 0) |
960 | whlp_file_fill(f, h->topicblock_remaining); |
961 | whlp_file_add_long(f, h->lasttopiclink); |
962 | h->firsttopiclink_offset = whlp_file_offset(f); |
963 | whlp_file_add_long(f, -1L); /* this will be filled in later */ |
964 | whlp_file_add_long(f, h->lasttopicstart); |
965 | h->topicblock_remaining = TOPIC_BLKSIZE - 12; |
966 | } |
967 | while (len > 0) { |
968 | int thislen = (h->topicblock_remaining < len ? |
969 | h->topicblock_remaining : len); |
970 | whlp_file_add(f, p, thislen); |
971 | p += thislen; |
972 | len -= thislen; |
973 | h->topicblock_remaining -= thislen; |
974 | if (len > 0 && h->topicblock_remaining <= 0) { |
975 | /* |
976 | * Start a new block. |
977 | */ |
978 | whlp_file_add_long(f, h->lasttopiclink); |
979 | h->firsttopiclink_offset = whlp_file_offset(f); |
980 | whlp_file_add_long(f, -1L); /* this will be filled in later */ |
981 | whlp_file_add_long(f, h->lasttopicstart); |
982 | h->topicblock_remaining = TOPIC_BLKSIZE - 12; |
983 | } |
984 | } |
985 | } |
986 | |
987 | static void whlp_topic_layout(WHLP h) |
988 | { |
989 | int block, offset, pos; |
990 | int i, nlinks, size; |
991 | int topicnum; |
992 | struct topiclink *link; |
993 | struct file *f; |
994 | |
995 | /* |
996 | * Create a final TOPICLINK containing no usable data. |
997 | */ |
f1530049 |
998 | link = snew(struct topiclink); |
d7482997 |
999 | link->nexttopic = NULL; |
1000 | if (h->prevtopic) |
1001 | h->prevtopic->nexttopic = link; |
1002 | h->prevtopic = link; |
f1530049 |
1003 | link->data1 = snewn(0x1c, unsigned char); |
d7482997 |
1004 | link->block_size = 0; |
1005 | link->data2 = NULL; |
1006 | link->len1 = 0x1c; |
1007 | link->len2 = 0; |
1008 | link->nexttopic = NULL; |
1009 | link->recordtype = 2; |
1010 | link->nonscroll = link->scroll = NULL; |
1011 | link->context = NULL; |
1012 | addpos234(h->text, link, count234(h->text)); |
1013 | |
1014 | /* |
1015 | * Each TOPICBLOCK has space for TOPIC_BLKSIZE-12 bytes. The |
1016 | * size of each TOPICLINK is 21 bytes plus the combined lengths |
1017 | * of LinkData1 and LinkData2. So we can now go through and |
1018 | * break up the TOPICLINKs into TOPICBLOCKs, and also set up |
1019 | * the TOPICOFFSET and TOPICPOS of each one while we do so. |
1020 | */ |
1021 | |
1022 | block = 0; |
1023 | offset = 0; |
1024 | pos = 12; |
1025 | nlinks = count234(h->text); |
1026 | for (i = 0; i < nlinks; i++) { |
1027 | link = index234(h->text, i); |
1028 | size = 21 + link->len1 + link->len2; |
1029 | /* |
1030 | * We can't split within the topicblock header or within |
1031 | * linkdata1. So if the split would fall in that area, |
1032 | * start a new block _now_. |
1033 | */ |
1034 | if (TOPIC_BLKSIZE - pos < 21 + link->len1) { |
1035 | block++; |
1036 | offset = 0; |
1037 | pos = 12; |
1038 | } |
1039 | link->topicoffset = block * 0x8000 + offset; |
1040 | link->topicpos = block * 0x4000 + pos; |
1041 | pos += size; |
1042 | if (link->recordtype != 2) /* TOPICOFFSET doesn't count titles */ |
1043 | offset += link->len2; |
1044 | while (pos > TOPIC_BLKSIZE) { |
1045 | block++; |
1046 | offset = 0; |
1047 | pos -= TOPIC_BLKSIZE - 12; |
1048 | } |
1049 | } |
1050 | |
1051 | /* |
1052 | * Now we have laid out the TOPICLINKs into blocks, and |
1053 | * determined the final TOPICOFFSET and TOPICPOS of each one. |
1054 | * So now we can go through and write the headers of the type-2 |
1055 | * records. |
1056 | */ |
1057 | |
1058 | topicnum = 0; |
1059 | for (i = 0; i < nlinks; i++) { |
1060 | link = index234(h->text, i); |
1061 | if (link->recordtype != 2) |
1062 | continue; |
1063 | |
1064 | PUT_32BIT_LSB_FIRST(link->data1 + 0, link->block_size); |
1065 | if (link->context && link->context->browse_prev) |
1066 | PUT_32BIT_LSB_FIRST(link->data1 + 4, |
1067 | link->context->browse_prev->link->topicoffset); |
1068 | else |
1069 | PUT_32BIT_LSB_FIRST(link->data1 + 4, 0xFFFFFFFFL); |
1070 | if (link->context && link->context->browse_next) |
1071 | PUT_32BIT_LSB_FIRST(link->data1 + 8, |
1072 | link->context->browse_next->link->topicoffset); |
1073 | else |
1074 | PUT_32BIT_LSB_FIRST(link->data1 + 8, 0xFFFFFFFFL); |
1075 | PUT_32BIT_LSB_FIRST(link->data1 + 12, topicnum); |
1076 | topicnum++; |
1077 | if (link->nonscroll) |
1078 | PUT_32BIT_LSB_FIRST(link->data1 + 16, link->nonscroll->topicpos); |
1079 | else |
1080 | PUT_32BIT_LSB_FIRST(link->data1 + 16, 0xFFFFFFFFL); |
1081 | if (link->scroll) |
1082 | PUT_32BIT_LSB_FIRST(link->data1 + 20, link->scroll->topicpos); |
1083 | else |
1084 | PUT_32BIT_LSB_FIRST(link->data1 + 20, 0xFFFFFFFFL); |
1085 | if (link->nexttopic) |
1086 | PUT_32BIT_LSB_FIRST(link->data1 + 24, link->nexttopic->topicpos); |
1087 | else |
1088 | PUT_32BIT_LSB_FIRST(link->data1 + 24, 0xFFFFFFFFL); |
1089 | } |
1090 | |
1091 | /* |
1092 | * Having done all _that_, we're now finally ready to go |
1093 | * through and create the |TOPIC section in its final form. |
1094 | */ |
1095 | |
1096 | h->lasttopiclink = -1L; |
1097 | h->lasttopicstart = 0L; |
1098 | f = whlp_new_file(h, "|TOPIC"); |
1099 | h->topicblock_remaining = -1; |
1100 | whlp_topicsect_write(h, f, NULL, 0, 0); /* start the first block */ |
1101 | for (i = 0; i < nlinks; i++) { |
1102 | unsigned char header[21]; |
1103 | struct topiclink *otherlink; |
1104 | |
1105 | link = index234(h->text, i); |
1106 | |
1107 | /* |
1108 | * Create and output the TOPICLINK header. |
1109 | */ |
1110 | PUT_32BIT_LSB_FIRST(header + 0, 21 + link->len1 + link->len2); |
1111 | PUT_32BIT_LSB_FIRST(header + 4, link->len2); |
1112 | if (i == 0) { |
1113 | PUT_32BIT_LSB_FIRST(header + 8, 0xFFFFFFFFL); |
1114 | } else { |
1115 | otherlink = index234(h->text, i-1); |
1116 | PUT_32BIT_LSB_FIRST(header + 8, otherlink->topicpos); |
1117 | } |
1118 | if (i+1 >= nlinks) { |
1119 | PUT_32BIT_LSB_FIRST(header + 12, 0xFFFFFFFFL); |
1120 | } else { |
1121 | otherlink = index234(h->text, i+1); |
1122 | PUT_32BIT_LSB_FIRST(header + 12, otherlink->topicpos); |
1123 | } |
1124 | PUT_32BIT_LSB_FIRST(header + 16, 21 + link->len1); |
1125 | header[20] = link->recordtype; |
1126 | whlp_topicsect_write(h, f, header, 21, 21 + link->len1); |
1127 | |
1128 | /* |
1129 | * Fill in the `first topiclink' pointer in the block |
1130 | * header if appropriate. (We do this _after_ outputting |
1131 | * the header because then we can be sure we'll be in the |
1132 | * same block as we think we are.) |
1133 | */ |
1134 | if (h->firsttopiclink_offset > 0) { |
1135 | whlp_file_seek(f, h->firsttopiclink_offset, 0); |
1136 | whlp_file_add_long(f, link->topicpos); |
1137 | h->firsttopiclink_offset = 0; |
1138 | whlp_file_seek(f, 0, 2); |
1139 | } |
1140 | |
1141 | /* |
1142 | * Update the `last topiclink', and possibly `last |
1143 | * topicstart', pointers. |
1144 | */ |
1145 | h->lasttopiclink = link->topicpos; |
1146 | if (link->recordtype == 2) |
1147 | h->lasttopicstart = link->topicpos; |
1148 | |
1149 | |
1150 | /* |
1151 | * Output LinkData1 and LinkData2. |
1152 | */ |
1153 | whlp_topicsect_write(h, f, link->data1, link->len1, link->len1); |
1154 | whlp_topicsect_write(h, f, link->data2, link->len2, 0); |
1155 | |
1156 | /* |
1157 | * Output the block header. |
1158 | */ |
1159 | |
1160 | link = index234(h->text, i); |
1161 | |
1162 | } |
1163 | } |
1164 | |
1165 | /* ---------------------------------------------------------------------- |
1166 | * Manage the index sections (|KWDATA, |KWMAP, |KWBTREE). |
1167 | */ |
1168 | |
1169 | void whlp_index_term(WHLP h, char *index, WHLP_TOPIC topic) |
1170 | { |
f1530049 |
1171 | struct indexrec *idx = snew(struct indexrec); |
d7482997 |
1172 | |
1173 | idx->term = dupstr(index); |
1174 | idx->topic = topic; |
1175 | /* |
1176 | * If this reference is already in the tree, just silently drop |
1177 | * the duplicate. |
1178 | */ |
1179 | if (add234(h->index, idx) != idx) { |
1180 | sfree(idx->term); |
1181 | sfree(idx); |
1182 | } |
1183 | } |
1184 | |
1185 | static void whlp_build_kwdata(WHLP h) |
1186 | { |
1187 | struct file *f; |
1188 | int i; |
1189 | struct indexrec *first, *next; |
1190 | |
1191 | f = whlp_new_file(h, "|KWDATA"); |
1192 | |
1193 | /* |
1194 | * Go through the index B-tree, condensing all sequences of |
1195 | * records with the same term into a single one with a valid |
1196 | * (count,offset) pair, and building up the KWDATA section. |
1197 | */ |
1198 | i = 0; |
1199 | while ( (first = index234(h->index, i)) != NULL) { |
1200 | first->count = 1; |
1201 | first->offset = whlp_file_offset(f); |
1202 | whlp_file_add_long(f, first->topic->link->topicoffset); |
1203 | i++; |
1204 | while ( (next = index234(h->index, i)) != NULL && |
1205 | !strcmp(first->term, next->term)) { |
1206 | /* |
1207 | * The next index record has the same term. Fold it |
1208 | * into this one and remove from the tree. |
1209 | */ |
1210 | whlp_file_add_long(f, next->topic->link->topicoffset); |
1211 | first->count++; |
1212 | delpos234(h->index, i); |
1213 | sfree(next->term); |
1214 | sfree(next); |
1215 | } |
1216 | } |
1217 | |
1218 | /* |
1219 | * Now we should have `index' in a form that's ready to |
1220 | * construct |KWBTREE. So we can return. |
1221 | */ |
1222 | } |
1223 | |
1224 | /* ---------------------------------------------------------------------- |
1225 | * Standard chunks of data for the |SYSTEM and |FONT sections. |
1226 | */ |
1227 | |
1228 | static void whlp_system_record(struct file *f, int id, |
1229 | const void *data, int length) |
1230 | { |
1231 | whlp_file_add_short(f, id); |
1232 | whlp_file_add_short(f, length); |
1233 | whlp_file_add(f, data, length); |
1234 | } |
1235 | |
1236 | static void whlp_standard_systemsection(struct file *f) |
1237 | { |
1238 | const char lcid[] = { 0, 0, 0, 0, 0, 0, 0, 0, 9, 4 }; |
1239 | const char charset[] = { 0, 0, 0, 2, 0 }; |
1240 | |
1241 | whlp_file_add_short(f, 0x36C); /* magic number */ |
1242 | whlp_file_add_short(f, 33); /* minor version: HCW 4.00 Win95+ */ |
1243 | whlp_file_add_short(f, 1); /* major version */ |
1244 | whlp_file_add_long(f, time(NULL)); /* generation date */ |
1245 | whlp_file_add_short(f, 0); /* flags=0 means no compression */ |
1246 | |
1247 | /* |
1248 | * Add some magic locale identifier information. (We ought to |
1249 | * find out something about what all this means; see the TODO |
1250 | * list at the top of the file.) |
1251 | */ |
1252 | whlp_system_record(f, 9, lcid, sizeof(lcid)); |
1253 | whlp_system_record(f, 11, charset, sizeof(charset)); |
1254 | } |
1255 | |
1256 | void whlp_title(WHLP h, char *title) |
1257 | { |
1258 | whlp_system_record(h->systemfile, 1, title, 1+strlen(title)); |
1259 | } |
1260 | |
1261 | void whlp_copyright(WHLP h, char *copyright) |
1262 | { |
1263 | whlp_system_record(h->systemfile, 2, copyright, 1+strlen(copyright)); |
1264 | } |
1265 | |
1266 | void whlp_start_macro(WHLP h, char *macro) |
1267 | { |
1268 | whlp_system_record(h->systemfile, 4, macro, 1+strlen(macro)); |
1269 | } |
1270 | |
1271 | void whlp_primary_topic(WHLP h, WHLP_TOPIC t) |
1272 | { |
1273 | h->ptopic = t; |
1274 | } |
1275 | |
1276 | static void whlp_do_primary_topic(WHLP h) |
1277 | { |
1278 | unsigned char firsttopic[4]; |
1279 | PUT_32BIT_LSB_FIRST(firsttopic, h->ptopic->link->topicoffset); |
1280 | whlp_system_record(h->systemfile, 3, firsttopic, sizeof(firsttopic)); |
1281 | } |
1282 | |
1283 | int whlp_create_font(WHLP h, char *font, int family, int halfpoints, |
1284 | int rendition, int r, int g, int b) |
1285 | { |
1286 | char *fontname = dupstr(font); |
1287 | struct fontdesc *fontdesc; |
1288 | int index; |
1289 | |
1290 | font = add234(h->fontnames, fontname); |
1291 | if (font != fontname) { |
1292 | /* The font name was already present. Free the new copy. */ |
1293 | sfree(fontname); |
1294 | } |
1295 | |
f1530049 |
1296 | fontdesc = snew(struct fontdesc); |
d7482997 |
1297 | fontdesc->font = font; |
1298 | fontdesc->family = family; |
1299 | fontdesc->halfpoints = halfpoints; |
1300 | fontdesc->rendition = rendition; |
1301 | fontdesc->r = r; |
1302 | fontdesc->g = g; |
1303 | fontdesc->b = b; |
1304 | |
1305 | index = count234(h->fontdescs); |
1306 | addpos234(h->fontdescs, fontdesc, index); |
1307 | return index; |
1308 | } |
1309 | |
1310 | static void whlp_make_fontsection(WHLP h, struct file *f) |
1311 | { |
1312 | int i; |
1313 | char *fontname; |
1314 | struct fontdesc *fontdesc; |
1315 | |
1316 | /* |
1317 | * Header block: number of font names, number of font |
1318 | * descriptors, offset to font names, and offset to font |
1319 | * descriptors. |
1320 | */ |
1321 | whlp_file_add_short(f, count234(h->fontnames)); |
1322 | whlp_file_add_short(f, count234(h->fontdescs)); |
1323 | whlp_file_add_short(f, 8); |
1324 | whlp_file_add_short(f, 8 + 32 * count234(h->fontnames)); |
1325 | |
1326 | /* |
1327 | * Font names. |
1328 | */ |
1329 | for (i = 0; (fontname = index234(h->fontnames, i)) != NULL; i++) { |
1330 | char data[32]; |
1331 | memset(data, i, sizeof(data)); |
1332 | strncpy(data, fontname, sizeof(data)); |
1333 | whlp_file_add(f, data, sizeof(data)); |
1334 | } |
1335 | |
1336 | /* |
1337 | * Font descriptors. |
1338 | */ |
1339 | for (i = 0; (fontdesc = index234(h->fontdescs, i)) != NULL; i++) { |
1340 | int fontpos; |
1341 | void *ret; |
1342 | |
1343 | ret = findpos234(h->fontnames, fontdesc->font, NULL, &fontpos); |
1344 | assert(ret != NULL); |
1345 | |
1346 | whlp_file_add_char(f, fontdesc->rendition); |
1347 | whlp_file_add_char(f, fontdesc->halfpoints); |
1348 | whlp_file_add_char(f, fontdesc->family); |
1349 | whlp_file_add_short(f, fontpos); |
1350 | /* Foreground RGB */ |
1351 | whlp_file_add_char(f, fontdesc->r); |
1352 | whlp_file_add_char(f, fontdesc->g); |
1353 | whlp_file_add_char(f, fontdesc->b); |
1354 | /* Background RGB is apparently unused and always set to zero */ |
1355 | whlp_file_add_char(f, 0); |
1356 | whlp_file_add_char(f, 0); |
1357 | whlp_file_add_char(f, 0); |
1358 | } |
1359 | |
1360 | } |
1361 | |
1362 | /* ---------------------------------------------------------------------- |
1363 | * Routines to manage a B-tree type file. |
1364 | */ |
1365 | |
1366 | static void whlp_make_btree(struct file *f, int flags, int pagesize, |
1367 | char *dataformat, tree234 *tree, |
1368 | struct file *map, |
1369 | bt_index_fn indexfn, bt_leaf_fn leaffn) |
1370 | { |
1371 | void **page_elements = NULL; |
1372 | int npages = 0, pagessize = 0; |
1373 | int npages_this_level, nentries, nlevels; |
1374 | int total_leaf_entries; |
ee90d1f0 |
1375 | unsigned char btdata[MAX_PAGE_SIZE]; |
d7482997 |
1376 | int btlen; |
1377 | int page_start, fixups_offset, unused_bytes; |
1378 | void *element; |
1379 | int index; |
1380 | |
1381 | assert(pagesize <= MAX_PAGE_SIZE); |
1382 | |
1383 | /* |
1384 | * Start with the B-tree header. We'll have to come back and |
1385 | * fill in a few bits later. |
1386 | */ |
1387 | whlp_file_add_short(f, 0x293B); /* magic number */ |
1388 | whlp_file_add_short(f, flags); |
1389 | whlp_file_add_short(f, pagesize); |
1390 | { |
1391 | char data[16]; |
1392 | memset(data, 0, sizeof(data)); |
1393 | assert(strlen(dataformat) <= sizeof(data)); |
1394 | memcpy(data, dataformat, strlen(dataformat)); |
1395 | whlp_file_add(f, data, sizeof(data)); |
1396 | } |
1397 | whlp_file_add_short(f, 0); /* must-be-zero */ |
1398 | fixups_offset = whlp_file_offset(f); |
1399 | whlp_file_add_short(f, 0); /* page splits; fix up later */ |
1400 | whlp_file_add_short(f, 0); /* root page index; fix up later */ |
1401 | whlp_file_add_short(f, -1); /* must-be-minus-one */ |
1402 | whlp_file_add_short(f, 0); /* total number of pages; fix later */ |
1403 | whlp_file_add_short(f, 0); /* number of levels; fix later */ |
1404 | whlp_file_add_long(f, count234(tree));/* total B-tree entries */ |
1405 | |
1406 | /* |
1407 | * If we have a map section, leave space at the start for its |
1408 | * element count. |
1409 | */ |
1410 | if (map) { |
1411 | whlp_file_add_short(map, 0); |
1412 | } |
1413 | |
1414 | /* |
1415 | * Now create the leaf pages. |
1416 | */ |
1417 | index = 0; |
1418 | |
1419 | npages_this_level = 0; |
1420 | total_leaf_entries = 0; |
1421 | |
1422 | element = index234(tree, index); |
1423 | while (element) { |
1424 | /* |
1425 | * Make a new leaf page. |
1426 | */ |
1427 | npages_this_level++; |
1428 | if (npages >= pagessize) { |
1429 | pagessize = npages + 32; |
f1530049 |
1430 | page_elements = sresize(page_elements, pagessize, void *); |
d7482997 |
1431 | } |
1432 | page_elements[npages++] = element; |
1433 | |
1434 | /* |
1435 | * Leave space in the leaf page for the header. We'll |
1436 | * come back and add it later. |
1437 | */ |
1438 | page_start = whlp_file_offset(f); |
1439 | whlp_file_add(f, "12345678", 8); |
1440 | unused_bytes = pagesize - 8; |
1441 | nentries = 0; |
1442 | |
1443 | /* |
1444 | * Now add leaf entries until we run out of room, or out of |
1445 | * elements. |
1446 | */ |
1447 | while (element) { |
1448 | btlen = leaffn(element, btdata); |
1449 | if (btlen > unused_bytes) |
1450 | break; |
1451 | whlp_file_add(f, btdata, btlen); |
1452 | unused_bytes -= btlen; |
1453 | nentries++; |
1454 | index++; |
1455 | element = index234(tree, index); |
1456 | } |
1457 | |
1458 | /* |
1459 | * Now add the unused bytes, and then go back and put |
1460 | * in the header. |
1461 | */ |
1462 | whlp_file_fill(f, unused_bytes); |
1463 | whlp_file_seek(f, page_start, 0); |
1464 | whlp_file_add_short(f, unused_bytes); |
1465 | whlp_file_add_short(f, nentries); |
1466 | /* Previous-page indicator will automatically go to -1 when |
1467 | * absent. */ |
1468 | whlp_file_add_short(f, npages-2); |
1469 | /* Next-page indicator must be -1 if we're at the end. */ |
1470 | if (!element) |
1471 | whlp_file_add_short(f, -1); |
1472 | else |
1473 | whlp_file_add_short(f, npages); |
1474 | whlp_file_seek(f, 0, 2); |
1475 | |
1476 | /* |
1477 | * If we have a map section, add a map entry. |
1478 | */ |
1479 | if (map) { |
1480 | whlp_file_add_long(map, total_leaf_entries); |
1481 | whlp_file_add_short(map, npages_this_level-1); |
1482 | } |
1483 | total_leaf_entries += nentries; |
1484 | } |
1485 | |
1486 | /* |
1487 | * If we have a map section, write the total number of map |
1488 | * entries into it. |
1489 | */ |
1490 | if (map) { |
1491 | whlp_file_seek(map, 0, 0); |
1492 | whlp_file_add_short(map, npages_this_level); |
1493 | whlp_file_seek(map, 0, 2); |
1494 | } |
1495 | |
1496 | /* |
1497 | * Now create further levels until we're down to one page. |
1498 | */ |
1499 | nlevels = 1; |
1500 | while (npages_this_level > 1) { |
1501 | int first = npages - npages_this_level; |
1502 | int last = npages - 1; |
1503 | int current; |
1504 | |
1505 | nlevels++; |
1506 | npages_this_level = 0; |
1507 | |
1508 | current = first; |
1509 | while (current <= last) { |
1510 | /* |
1511 | * Make a new index page. |
1512 | */ |
1513 | npages_this_level++; |
1514 | if (npages >= pagessize) { |
1515 | pagessize = npages + 32; |
f1530049 |
1516 | page_elements = sresize(page_elements, pagessize, void *); |
d7482997 |
1517 | } |
1518 | page_elements[npages++] = page_elements[current]; |
1519 | |
1520 | /* |
1521 | * Leave space for some of the header, but we can put |
1522 | * in the PreviousPage link already. |
1523 | */ |
1524 | page_start = whlp_file_offset(f); |
1525 | whlp_file_add(f, "1234", 4); |
1526 | whlp_file_add_short(f, current); |
1527 | unused_bytes = pagesize - 6; |
1528 | |
1529 | /* |
1530 | * Now add index entries until we run out of either |
1531 | * space or pages. |
1532 | */ |
1533 | current++; |
1534 | nentries = 0; |
1535 | while (current <= last) { |
1536 | btlen = indexfn(page_elements[current], btdata); |
1537 | if (btlen + 2 > unused_bytes) |
1538 | break; |
1539 | whlp_file_add(f, btdata, btlen); |
1540 | whlp_file_add_short(f, current); |
1541 | unused_bytes -= btlen+2; |
1542 | nentries++; |
1543 | current++; |
1544 | } |
1545 | |
1546 | /* |
1547 | * Now add the unused bytes, and then go back and put |
1548 | * in the header. |
1549 | */ |
1550 | whlp_file_fill(f, unused_bytes); |
1551 | whlp_file_seek(f, page_start, 0); |
1552 | whlp_file_add_short(f, unused_bytes); |
1553 | whlp_file_add_short(f, nentries); |
1554 | whlp_file_seek(f, 0, 2); |
1555 | } |
1556 | } |
1557 | |
1558 | /* |
1559 | * Now we have all our pages ready, and we know where our root |
1560 | * page is. Fix up the main B-tree header. |
1561 | */ |
1562 | whlp_file_seek(f, fixups_offset, 0); |
1563 | /* Creation of every page requires a split unless it's the first in |
1564 | * a new level. Hence, page splits equals pages minus levels. */ |
1565 | whlp_file_add_short(f, npages - nlevels); |
1566 | whlp_file_add_short(f, npages-1); /* root page index */ |
1567 | whlp_file_add_short(f, -1); /* must-be-minus-one */ |
1568 | whlp_file_add_short(f, npages); /* total number of pages */ |
1569 | whlp_file_add_short(f, nlevels); /* number of levels */ |
1570 | |
1571 | /* Just for tidiness, seek to the end of the file :-) */ |
1572 | whlp_file_seek(f, 0, 2); |
1573 | |
1574 | /* Clean up. */ |
1575 | sfree(page_elements); |
1576 | } |
1577 | |
1578 | |
1579 | /* ---------------------------------------------------------------------- |
1580 | * Routines to manage the `internal file' structure. |
1581 | */ |
1582 | |
1583 | static struct file *whlp_new_file(WHLP h, char *name) |
1584 | { |
1585 | struct file *f; |
f1530049 |
1586 | f = snew(struct file); |
d7482997 |
1587 | f->data = NULL; |
1588 | f->pos = f->len = f->size = 0; |
1589 | if (name) { |
1590 | f->name = dupstr(name); |
1591 | add234(h->files, f); |
1592 | } else { |
1593 | f->name = NULL; |
1594 | } |
1595 | return f; |
1596 | } |
1597 | |
1598 | static void whlp_free_file(struct file *f) |
1599 | { |
1600 | sfree(f->data); |
1601 | sfree(f->name); /* may be NULL */ |
1602 | sfree(f); |
1603 | } |
1604 | |
1605 | static void whlp_file_add(struct file *f, const void *data, int len) |
1606 | { |
1607 | if (f->pos + len > f->size) { |
1608 | f->size = f->pos + len + 1024; |
f1530049 |
1609 | f->data = sresize(f->data, f->size, unsigned char); |
d7482997 |
1610 | } |
1611 | memcpy(f->data + f->pos, data, len); |
1612 | f->pos += len; |
1613 | if (f->len < f->pos) |
1614 | f->len = f->pos; |
1615 | } |
1616 | |
1617 | static void whlp_file_add_char(struct file *f, int data) |
1618 | { |
1619 | unsigned char s; |
1620 | s = data & 0xFF; |
1621 | whlp_file_add(f, &s, 1); |
1622 | } |
1623 | |
1624 | static void whlp_file_add_short(struct file *f, int data) |
1625 | { |
1626 | unsigned char s[2]; |
1627 | PUT_16BIT_LSB_FIRST(s, data); |
1628 | whlp_file_add(f, s, 2); |
1629 | } |
1630 | |
1631 | static void whlp_file_add_long(struct file *f, int data) |
1632 | { |
1633 | unsigned char s[4]; |
1634 | PUT_32BIT_LSB_FIRST(s, data); |
1635 | whlp_file_add(f, s, 4); |
1636 | } |
1637 | |
83ac0deb |
1638 | static void whlp_file_add_cushort(struct file *f, int data) |
1639 | { |
1640 | if (data <= 0x7F) { |
1641 | whlp_file_add_char(f, data*2); |
1642 | } else { |
1643 | whlp_file_add_char(f, 1 + (data%128 * 2)); |
1644 | whlp_file_add_char(f, data/128); |
1645 | } |
1646 | } |
1647 | |
1648 | #if 0 /* currently unused */ |
1649 | static void whlp_file_add_csshort(struct file *f, int data) |
1650 | { |
1651 | if (data >= -0x40 && data <= 0x3F) |
1652 | whlp_file_add_cushort(f, data+64); |
1653 | else |
1654 | whlp_file_add_cushort(f, data+16384); |
1655 | } |
1656 | #endif |
1657 | |
1658 | static void whlp_file_add_culong(struct file *f, int data) |
1659 | { |
1660 | if (data <= 0x7FFF) { |
1661 | whlp_file_add_short(f, data*2); |
1662 | } else { |
1663 | whlp_file_add_short(f, 1 + (data%32768 * 2)); |
1664 | whlp_file_add_short(f, data/32768); |
1665 | } |
1666 | } |
1667 | |
1668 | #if 0 /* currently unused */ |
1669 | static void whlp_file_add_cslong(struct file *f, int data) |
1670 | { |
1671 | if (data >= -0x4000 && data <= 0x3FFF) |
1672 | whlp_file_add_culong(f, data+16384); |
1673 | else |
1674 | whlp_file_add_culong(f, data+67108864); |
1675 | } |
1676 | #endif |
1677 | |
d7482997 |
1678 | static void whlp_file_fill(struct file *f, int len) |
1679 | { |
1680 | if (f->pos + len > f->size) { |
1681 | f->size = f->pos + len + 1024; |
f1530049 |
1682 | f->data = sresize(f->data, f->size, unsigned char); |
d7482997 |
1683 | } |
1684 | memset(f->data + f->pos, 0, len); |
1685 | f->pos += len; |
1686 | if (f->len < f->pos) |
1687 | f->len = f->pos; |
1688 | } |
1689 | |
1690 | static void whlp_file_seek(struct file *f, int pos, int whence) |
1691 | { |
1692 | f->pos = (whence == 0 ? 0 : whence == 1 ? f->pos : f->len) + pos; |
1693 | } |
1694 | |
1695 | static int whlp_file_offset(struct file *f) |
1696 | { |
1697 | return f->pos; |
1698 | } |
1699 | |
1700 | /* ---------------------------------------------------------------------- |
1701 | * Open and close routines; final wrapper around everything. |
1702 | */ |
1703 | |
1704 | WHLP whlp_new(void) |
1705 | { |
1706 | WHLP ret; |
1707 | struct file *f; |
1708 | |
f1530049 |
1709 | ret = snew(struct WHLP_tag); |
d7482997 |
1710 | |
1711 | /* |
1712 | * Internal B-trees. |
1713 | */ |
1714 | ret->files = newtree234(filecmp); |
1715 | ret->pre_contexts = newtree234(NULL); |
1716 | ret->contexts = newtree234(ctxcmp); |
1717 | ret->titles = newtree234(ttlcmp); |
1718 | ret->text = newtree234(NULL); |
1719 | ret->index = newtree234(idxcmp); |
1720 | ret->tabstops = newtree234(tabcmp); |
1721 | ret->fontnames = newtree234(fontcmp); |
1722 | ret->fontdescs = newtree234(NULL); |
1723 | |
1724 | /* |
1725 | * Some standard files. |
1726 | */ |
1727 | f = whlp_new_file(ret, "|CTXOMAP"); |
1728 | whlp_file_add_short(f, 0); /* dummy section */ |
1729 | f = whlp_new_file(ret, "|SYSTEM"); |
1730 | whlp_standard_systemsection(f); |
1731 | ret->systemfile = f; |
1732 | |
1733 | /* |
1734 | * Other variables. |
1735 | */ |
1736 | ret->prevtopic = NULL; |
1737 | ret->ncontexts = 0; |
1738 | ret->link = NULL; |
83ac0deb |
1739 | ret->picture_index = 0; |
d7482997 |
1740 | |
1741 | return ret; |
1742 | } |
1743 | |
1744 | void whlp_close(WHLP h, char *filename) |
1745 | { |
1746 | FILE *fp; |
1747 | int filecount, offset, index, filelen; |
1748 | struct file *file, *map, *md; |
1749 | context *ctx; |
1750 | int has_index; |
1751 | |
1752 | /* |
1753 | * Lay out the topic section. |
1754 | */ |
1755 | whlp_topic_layout(h); |
1756 | |
1757 | /* |
1758 | * Finish off the system section. |
1759 | */ |
1760 | whlp_do_primary_topic(h); |
1761 | |
1762 | /* |
1763 | * Assemble the font section. |
1764 | */ |
1765 | file = whlp_new_file(h, "|FONT"); |
1766 | whlp_make_fontsection(h, file); |
1767 | |
1768 | /* |
1769 | * Set up the index. |
1770 | */ |
1771 | has_index = (count234(h->index) != 0); |
1772 | if (has_index) |
1773 | whlp_build_kwdata(h); |
1774 | |
1775 | /* |
1776 | * Set up the `titles' B-tree for the |TTLBTREE section. |
1777 | */ |
1778 | for (index = 0; (ctx = index234(h->contexts, index)) != NULL; index++) |
1779 | add234(h->titles, ctx); |
1780 | |
1781 | /* |
1782 | * Construct the various B-trees. |
1783 | */ |
1784 | file = whlp_new_file(h, "|CONTEXT"); |
1785 | whlp_make_btree(file, 0x0002, 0x0800, "L4", |
1786 | h->contexts, NULL, ctxindex, ctxleaf); |
1787 | |
1788 | file = whlp_new_file(h, "|TTLBTREE"); |
1789 | whlp_make_btree(file, 0x0002, 0x0800, "Lz", |
1790 | h->titles, NULL, ttlindex, ttlleaf); |
1791 | |
1792 | if (has_index) { |
1793 | file = whlp_new_file(h, "|KWBTREE"); |
1794 | map = whlp_new_file(h, "|KWMAP"); |
1795 | whlp_make_btree(file, 0x0002, 0x0800, "F24", |
1796 | h->index, map, idxindex, idxleaf); |
1797 | } |
1798 | |
1799 | /* |
1800 | * Open the output file. |
1801 | */ |
1802 | fp = fopen(filename, "wb"); |
1803 | if (!fp) { |
1804 | whlp_abandon(h); |
1805 | return; |
1806 | } |
1807 | |
1808 | /* |
1809 | * Work out all the file offsets. |
1810 | */ |
1811 | filecount = count234(h->files); |
1812 | offset = 16; /* just after header */ |
1813 | for (index = 0; index < filecount; index++) { |
1814 | file = index234(h->files, index); |
1815 | file->fileoffset = offset; |
1816 | offset += 9 + file->len; /* 9 is size of file header */ |
1817 | } |
1818 | /* Now `offset' holds what will be the offset of the master directory. */ |
1819 | |
1820 | md = whlp_new_file(h, NULL); /* master directory file */ |
1821 | whlp_make_btree(md, 0x0402, 0x0400, "z4", |
1822 | h->files, NULL, fileindex, fileleaf); |
1823 | |
1824 | filelen = offset + 9 + md->len; |
1825 | |
1826 | /* |
1827 | * Write out the file header. |
1828 | */ |
1829 | { |
1830 | unsigned char header[16]; |
1831 | PUT_32BIT_LSB_FIRST(header+0, 0x00035F3FL); /* magic */ |
1832 | PUT_32BIT_LSB_FIRST(header+4, offset); /* offset to directory */ |
1833 | PUT_32BIT_LSB_FIRST(header+8, 0xFFFFFFFFL); /* first free block */ |
1834 | PUT_32BIT_LSB_FIRST(header+12, filelen); /* total file length */ |
1835 | fwrite(header, 1, 16, fp); |
1836 | } |
1837 | |
1838 | /* |
1839 | * Now write out each file. |
1840 | */ |
1841 | for (index = 0; index <= filecount; index++) { |
1842 | int used, reserved; |
1843 | unsigned char header[9]; |
1844 | |
1845 | if (index == filecount) |
1846 | file = md; /* master directory comes last */ |
1847 | else |
1848 | file = index234(h->files, index); |
1849 | |
1850 | used = file->len; |
1851 | reserved = used + 9; |
1852 | |
1853 | /* File header. */ |
1854 | PUT_32BIT_LSB_FIRST(header+0, reserved); |
1855 | PUT_32BIT_LSB_FIRST(header+4, used); |
1856 | header[8] = 0; /* flags */ |
1857 | fwrite(header, 1, 9, fp); |
1858 | |
1859 | /* File data. */ |
1860 | fwrite(file->data, 1, file->len, fp); |
1861 | } |
1862 | |
1863 | fclose(fp); |
1864 | |
1865 | whlp_free_file(md); |
1866 | |
1867 | whlp_abandon(h); /* now free everything */ |
1868 | } |
1869 | |
1870 | void whlp_abandon(WHLP h) |
1871 | { |
1872 | struct file *f; |
1873 | struct indexrec *idx; |
1874 | struct topiclink *link; |
1875 | struct fontdesc *fontdesc; |
1876 | char *fontname; |
1877 | context *ctx; |
1878 | |
1879 | /* Get rid of any lingering tab stops. */ |
1880 | whlp_para_reset(h); |
1881 | |
1882 | /* Delete the (now empty) tabstops tree. */ |
1883 | freetree234(h->tabstops); |
1884 | |
1885 | /* Delete the index tree and all its entries. */ |
1886 | while ( (idx = index234(h->index, 0)) != NULL) { |
1887 | delpos234(h->index, 0); |
1888 | sfree(idx->term); |
1889 | sfree(idx); |
1890 | } |
1891 | freetree234(h->index); |
1892 | |
1893 | /* Delete the text tree and all its topiclinks. */ |
1894 | while ( (link = index234(h->text, 0)) != NULL) { |
1895 | delpos234(h->text, 0); |
1896 | sfree(link->data1); /* may be NULL */ |
1897 | sfree(link->data2); /* may be NULL */ |
1898 | sfree(link); |
1899 | } |
1900 | freetree234(h->text); |
1901 | |
1902 | /* Delete the fontdescs tree and all its entries. */ |
1903 | while ( (fontdesc = index234(h->fontdescs, 0)) != NULL) { |
1904 | delpos234(h->fontdescs, 0); |
1905 | sfree(fontdesc); |
1906 | } |
1907 | freetree234(h->fontdescs); |
1908 | |
1909 | /* Delete the fontnames tree and all its entries. */ |
1910 | while ( (fontname = index234(h->fontnames, 0)) != NULL) { |
1911 | delpos234(h->fontnames, 0); |
1912 | sfree(fontname); |
1913 | } |
1914 | freetree234(h->fontnames); |
1915 | |
1916 | /* There might be an unclosed paragraph in h->link. */ |
1917 | if (h->link) |
1918 | sfree(h->link); /* if so it won't have data1 or data2 */ |
1919 | |
1920 | /* |
1921 | * `titles' contains copies of the `contexts' entries, so we |
1922 | * don't need to free them here. |
1923 | */ |
1924 | freetree234(h->titles); |
1925 | |
1926 | /* |
1927 | * `contexts' and `pre_contexts' _both_ contain contexts that |
1928 | * need freeing. (pre_contexts shouldn't contain any, unless |
1929 | * the help generation was abandoned half-way through.) |
1930 | */ |
1931 | while ( (ctx = index234(h->pre_contexts, 0)) != NULL) { |
1932 | delpos234(h->index, 0); |
1933 | sfree(ctx->name); |
1934 | sfree(ctx->title); |
1935 | sfree(ctx); |
1936 | } |
1937 | freetree234(h->pre_contexts); |
1938 | while ( (ctx = index234(h->contexts, 0)) != NULL) { |
1939 | delpos234(h->contexts, 0); |
1940 | sfree(ctx->name); |
1941 | sfree(ctx->title); |
1942 | sfree(ctx); |
1943 | } |
1944 | freetree234(h->contexts); |
1945 | |
1946 | /* |
1947 | * Free all the internal files. |
1948 | */ |
1949 | while ( (f = index234(h->files, 0)) != NULL ) { |
1950 | delpos234(h->files, 0); |
1951 | whlp_free_file(f); |
1952 | } |
1953 | freetree234(h->files); |
1954 | |
1955 | sfree(h); |
1956 | } |
1957 | |
63d7b60d |
1958 | #ifdef WINHELP_TESTMODE |
d7482997 |
1959 | |
63d7b60d |
1960 | #ifdef PICTURE_FROM_CMDLINE |
1961 | #include "png.h" |
1962 | #include "colquant.h" |
1963 | #include "dither.h" |
1964 | #endif |
1965 | |
1966 | int main(int argc, char **argv) |
d7482997 |
1967 | { |
1968 | WHLP h; |
1969 | WHLP_TOPIC t1, t2, t3; |
1970 | char *e; |
1971 | char mymacro[100]; |
1972 | |
1973 | h = whlp_new(); |
1974 | |
1975 | whlp_title(h, "Test Help File"); |
1976 | whlp_copyright(h, "This manual is copyright \251 2001 Simon Tatham." |
1977 | " All rights reversed."); |
1978 | whlp_start_macro(h, "CB(\"btn_about\",\"&About\",\"About()\")"); |
1979 | whlp_start_macro(h, "CB(\"btn_up\",\"&Up\",\"Contents()\")"); |
1980 | whlp_start_macro(h, "BrowseButtons()"); |
1981 | |
1982 | whlp_create_font(h, "Arial", WHLP_FONTFAM_SANS, 30, |
1983 | 0, 0, 0, 0); |
1984 | whlp_create_font(h, "Times New Roman", WHLP_FONTFAM_SERIF, 24, |
1985 | WHLP_FONT_STRIKEOUT, 0, 0, 0); |
1986 | whlp_create_font(h, "Times New Roman", WHLP_FONTFAM_SERIF, 24, |
1987 | WHLP_FONT_ITALIC, 0, 0, 0); |
1988 | whlp_create_font(h, "Courier New", WHLP_FONTFAM_FIXED, 24, |
1989 | 0, 0, 0, 0); |
1990 | |
1991 | t1 = whlp_register_topic(h, "foobar", &e); |
1992 | assert(t1 != NULL); |
1993 | t2 = whlp_register_topic(h, "M359HPEHGW", &e); |
1994 | assert(t2 != NULL); |
1995 | t3 = whlp_register_topic(h, "Y5VQEXZQVJ", &e); |
1996 | assert(t3 == NULL && !strcmp(e, "M359HPEHGW")); |
1997 | t3 = whlp_register_topic(h, NULL, NULL); |
1998 | assert(t3 != NULL); |
1999 | |
2000 | whlp_primary_topic(h, t2); |
2001 | |
2002 | whlp_prepare(h); |
2003 | |
2004 | whlp_begin_topic(h, t1, "First Topic", "DB(\"btn_up\")", NULL); |
2005 | |
2006 | whlp_begin_para(h, WHLP_PARA_NONSCROLL); |
2007 | whlp_set_font(h, 0); |
2008 | whlp_text(h, "Foobar"); |
2009 | whlp_end_para(h); |
2010 | |
2011 | whlp_begin_para(h, WHLP_PARA_SCROLL); |
2012 | whlp_set_font(h, 1); |
2013 | whlp_text(h, "This is a silly paragraph with "); |
2014 | whlp_set_font(h, 3); |
2015 | whlp_text(h, "code"); |
2016 | whlp_set_font(h, 1); |
2017 | whlp_text(h, " in it."); |
2018 | whlp_end_para(h); |
2019 | |
2020 | whlp_para_attr(h, WHLP_PARA_SPACEABOVE, 12); |
2021 | whlp_begin_para(h, WHLP_PARA_SCROLL); |
2022 | whlp_set_font(h, 1); |
2023 | whlp_text(h, "This second, equally silly, paragraph has "); |
2024 | whlp_set_font(h, 2); |
2025 | whlp_text(h, "emphasis"); |
2026 | whlp_set_font(h, 1); |
2027 | whlp_text(h, " just to prove we can do it."); |
2028 | whlp_end_para(h); |
2029 | |
2030 | whlp_begin_para(h, WHLP_PARA_SCROLL); |
2031 | whlp_set_font(h, 1); |
2032 | whlp_text(h, "Now I'm going to waffle on indefinitely, in a vague attempt" |
2033 | " to make some wrapping happen, and also to make the topicblock" |
2034 | " go across its boundaries. This is going to take a fair amount" |
2035 | " of text, so I'll just have to cheat and c'n'p a lot of it."); |
2036 | whlp_end_para(h); |
2037 | |
2038 | whlp_begin_para(h, WHLP_PARA_SCROLL); |
2039 | whlp_set_font(h, 1); |
2040 | whlp_text(h, "Now I'm going to waffle on indefinitely, in a vague attempt" |
2041 | " to make some wrapping happen, and also to make the topicblock" |
2042 | " go across its boundaries. This is going to take a fair amount" |
2043 | " of text, so I'll just have to cheat and c'n'p a lot of it."); |
2044 | whlp_end_para(h); |
2045 | |
2046 | whlp_begin_para(h, WHLP_PARA_SCROLL); |
2047 | whlp_set_font(h, 1); |
2048 | whlp_text(h, "Now I'm going to waffle on indefinitely, in a vague attempt" |
2049 | " to make some wrapping happen, and also to make the topicblock" |
2050 | " go across its boundaries. This is going to take a fair amount" |
2051 | " of text, so I'll just have to cheat and c'n'p a lot of it."); |
2052 | whlp_end_para(h); |
2053 | |
2054 | whlp_begin_para(h, WHLP_PARA_SCROLL); |
2055 | whlp_set_font(h, 1); |
2056 | whlp_text(h, "Now I'm going to waffle on indefinitely, in a vague attempt" |
2057 | " to make some wrapping happen, and also to make the topicblock" |
2058 | " go across its boundaries. This is going to take a fair amount" |
2059 | " of text, so I'll just have to cheat and c'n'p a lot of it."); |
2060 | whlp_end_para(h); |
2061 | |
2062 | whlp_begin_para(h, WHLP_PARA_SCROLL); |
2063 | whlp_set_font(h, 1); |
2064 | whlp_text(h, "Now I'm going to waffle on indefinitely, in a vague attempt" |
2065 | " to make some wrapping happen, and also to make the topicblock" |
2066 | " go across its boundaries. This is going to take a fair amount" |
2067 | " of text, so I'll just have to cheat and c'n'p a lot of it."); |
2068 | whlp_end_para(h); |
2069 | |
2070 | whlp_begin_para(h, WHLP_PARA_SCROLL); |
2071 | whlp_set_font(h, 1); |
2072 | whlp_text(h, "Now I'm going to waffle on indefinitely, in a vague attempt" |
2073 | " to make some wrapping happen, and also to make the topicblock" |
2074 | " go across its boundaries. This is going to take a fair amount" |
2075 | " of text, so I'll just have to cheat and c'n'p a lot of it."); |
2076 | whlp_end_para(h); |
2077 | |
2078 | whlp_begin_para(h, WHLP_PARA_SCROLL); |
2079 | whlp_set_font(h, 1); |
2080 | whlp_text(h, "Now I'm going to waffle on indefinitely, in a vague attempt" |
2081 | " to make some wrapping happen, and also to make the topicblock" |
2082 | " go across its boundaries. This is going to take a fair amount" |
2083 | " of text, so I'll just have to cheat and c'n'p a lot of it."); |
2084 | whlp_end_para(h); |
2085 | |
2086 | whlp_begin_para(h, WHLP_PARA_SCROLL); |
2087 | whlp_set_font(h, 1); |
2088 | whlp_text(h, "Now I'm going to waffle on indefinitely, in a vague attempt" |
2089 | " to make some wrapping happen, and also to make the topicblock" |
2090 | " go across its boundaries. This is going to take a fair amount" |
2091 | " of text, so I'll just have to cheat and c'n'p a lot of it."); |
2092 | whlp_end_para(h); |
2093 | |
2094 | whlp_begin_para(h, WHLP_PARA_SCROLL); |
2095 | whlp_set_font(h, 1); |
2096 | whlp_text(h, "Now I'm going to waffle on indefinitely, in a vague attempt" |
2097 | " to make some wrapping happen, and also to make the topicblock" |
2098 | " go across its boundaries. This is going to take a fair amount" |
2099 | " of text, so I'll just have to cheat and c'n'p a lot of it."); |
2100 | whlp_end_para(h); |
2101 | |
2102 | whlp_begin_para(h, WHLP_PARA_SCROLL); |
2103 | whlp_set_font(h, 1); |
2104 | whlp_text(h, "Now I'm going to waffle on indefinitely, in a vague attempt" |
2105 | " to make some wrapping happen, and also to make the topicblock" |
2106 | " go across its boundaries. This is going to take a fair amount" |
2107 | " of text, so I'll just have to cheat and c'n'p a lot of it."); |
2108 | whlp_end_para(h); |
2109 | |
2110 | whlp_begin_para(h, WHLP_PARA_SCROLL); |
2111 | whlp_set_font(h, 1); |
2112 | whlp_text(h, "Now I'm going to waffle on indefinitely, in a vague attempt" |
2113 | " to make some wrapping happen, and also to make the topicblock" |
2114 | " go across its boundaries. This is going to take a fair amount" |
2115 | " of text, so I'll just have to cheat and c'n'p a lot of it."); |
2116 | whlp_end_para(h); |
2117 | |
2118 | whlp_begin_para(h, WHLP_PARA_SCROLL); |
2119 | whlp_set_font(h, 1); |
2120 | whlp_text(h, "Now I'm going to waffle on indefinitely, in a vague attempt" |
2121 | " to make some wrapping happen, and also to make the topicblock" |
2122 | " go across its boundaries. This is going to take a fair amount" |
2123 | " of text, so I'll just have to cheat and c'n'p a lot of it."); |
2124 | whlp_end_para(h); |
2125 | |
2126 | whlp_begin_para(h, WHLP_PARA_SCROLL); |
2127 | whlp_set_font(h, 1); |
2128 | whlp_text(h, "Now I'm going to waffle on indefinitely, in a vague attempt" |
2129 | " to make some wrapping happen, and also to make the topicblock" |
2130 | " go across its boundaries. This is going to take a fair amount" |
2131 | " of text, so I'll just have to cheat and c'n'p a lot of it."); |
2132 | whlp_end_para(h); |
2133 | |
2134 | whlp_begin_para(h, WHLP_PARA_SCROLL); |
2135 | whlp_set_font(h, 1); |
2136 | whlp_text(h, "Now I'm going to waffle on indefinitely, in a vague attempt" |
2137 | " to make some wrapping happen, and also to make the topicblock" |
2138 | " go across its boundaries. This is going to take a fair amount" |
2139 | " of text, so I'll just have to cheat and c'n'p a lot of it."); |
2140 | whlp_end_para(h); |
2141 | |
2142 | whlp_begin_para(h, WHLP_PARA_SCROLL); |
2143 | whlp_set_font(h, 1); |
2144 | whlp_text(h, "Now I'm going to waffle on indefinitely, in a vague attempt" |
2145 | " to make some wrapping happen, and also to make the topicblock" |
2146 | " go across its boundaries. This is going to take a fair amount" |
2147 | " of text, so I'll just have to cheat and c'n'p a lot of it."); |
2148 | whlp_end_para(h); |
2149 | |
2150 | whlp_begin_para(h, WHLP_PARA_SCROLL); |
2151 | whlp_set_font(h, 1); |
2152 | whlp_text(h, "Now I'm going to waffle on indefinitely, in a vague attempt" |
2153 | " to make some wrapping happen, and also to make the topicblock" |
2154 | " go across its boundaries. This is going to take a fair amount" |
2155 | " of text, so I'll just have to cheat and c'n'p a lot of it."); |
2156 | whlp_end_para(h); |
2157 | |
2158 | whlp_begin_para(h, WHLP_PARA_SCROLL); |
2159 | whlp_set_font(h, 1); |
2160 | whlp_text(h, "Now I'm going to waffle on indefinitely, in a vague attempt" |
2161 | " to make some wrapping happen, and also to make the topicblock" |
2162 | " go across its boundaries. This is going to take a fair amount" |
2163 | " of text, so I'll just have to cheat and c'n'p a lot of it."); |
2164 | whlp_end_para(h); |
2165 | |
2166 | whlp_begin_para(h, WHLP_PARA_SCROLL); |
2167 | whlp_set_font(h, 1); |
2168 | whlp_text(h, "Now I'm going to waffle on indefinitely, in a vague attempt" |
2169 | " to make some wrapping happen, and also to make the topicblock" |
2170 | " go across its boundaries. This is going to take a fair amount" |
2171 | " of text, so I'll just have to cheat and c'n'p a lot of it."); |
2172 | whlp_end_para(h); |
2173 | |
2174 | whlp_begin_para(h, WHLP_PARA_SCROLL); |
2175 | whlp_set_font(h, 1); |
2176 | whlp_text(h, "Now I'm going to waffle on indefinitely, in a vague attempt" |
2177 | " to make some wrapping happen, and also to make the topicblock" |
2178 | " go across its boundaries. This is going to take a fair amount" |
2179 | " of text, so I'll just have to cheat and c'n'p a lot of it."); |
2180 | whlp_end_para(h); |
2181 | |
2182 | whlp_begin_para(h, WHLP_PARA_SCROLL); |
2183 | whlp_set_font(h, 1); |
2184 | whlp_text(h, "Now I'm going to waffle on indefinitely, in a vague attempt" |
2185 | " to make some wrapping happen, and also to make the topicblock" |
2186 | " go across its boundaries. This is going to take a fair amount" |
2187 | " of text, so I'll just have to cheat and c'n'p a lot of it."); |
2188 | whlp_end_para(h); |
2189 | |
2190 | whlp_begin_para(h, WHLP_PARA_SCROLL); |
2191 | whlp_set_font(h, 1); |
2192 | whlp_text(h, "Now I'm going to waffle on indefinitely, in a vague attempt" |
2193 | " to make some wrapping happen, and also to make the topicblock" |
2194 | " go across its boundaries. This is going to take a fair amount" |
2195 | " of text, so I'll just have to cheat and c'n'p a lot of it."); |
2196 | whlp_end_para(h); |
2197 | |
2198 | whlp_begin_para(h, WHLP_PARA_SCROLL); |
2199 | whlp_set_font(h, 1); |
2200 | whlp_text(h, "Now I'm going to waffle on indefinitely, in a vague attempt" |
2201 | " to make some wrapping happen, and also to make the topicblock" |
2202 | " go across its boundaries. This is going to take a fair amount" |
2203 | " of text, so I'll just have to cheat and c'n'p a lot of it."); |
2204 | whlp_end_para(h); |
2205 | |
2206 | whlp_begin_para(h, WHLP_PARA_SCROLL); |
2207 | whlp_set_font(h, 1); |
2208 | whlp_text(h, "Have a "); |
2209 | whlp_start_hyperlink(h, t2); |
2210 | whlp_text(h, "hyperlink"); |
2211 | whlp_end_hyperlink(h); |
2212 | whlp_text(h, " to another topic."); |
2213 | whlp_end_para(h); |
2214 | |
2215 | sprintf(mymacro, "CBB(\"btn_up\",\"JI(`',`%s')\");EB(\"btn_up\")", |
2216 | whlp_topic_id(t3)); |
2217 | |
2218 | whlp_begin_topic(h, t2, "Second Topic", mymacro, NULL); |
2219 | |
2220 | whlp_begin_para(h, WHLP_PARA_SCROLL); |
2221 | whlp_set_font(h, 1); |
2222 | whlp_text(h, "This topic contains no non-scrolling region. I would" |
2223 | " illustrate this with a ludicrously long paragraph, but that" |
2224 | " would get very tedious very quickly. Instead I'll just waffle" |
2225 | " on pointlessly for a little bit and then shut up."); |
2226 | whlp_end_para(h); |
2227 | |
2228 | whlp_set_tabstop(h, 36, WHLP_ALIGN_LEFT); |
2229 | whlp_para_attr(h, WHLP_PARA_LEFTINDENT, 36); |
2230 | whlp_para_attr(h, WHLP_PARA_FIRSTLINEINDENT, -36); |
2231 | whlp_para_attr(h, WHLP_PARA_SPACEABOVE, 12); |
2232 | whlp_begin_para(h, WHLP_PARA_SCROLL); |
2233 | whlp_set_font(h, 1); |
2234 | whlp_text(h, "\225"); /* bullet */ |
2235 | whlp_tab(h); |
2236 | whlp_text(h, "This is a paragraph with a bullet. With any luck it should" |
2237 | " work exactly like it used to in the old NASM help file."); |
2238 | whlp_end_para(h); |
2239 | |
2240 | whlp_set_tabstop(h, 128, WHLP_ALIGN_RIGHT); |
2241 | whlp_set_tabstop(h, 256, WHLP_ALIGN_CENTRE); |
2242 | whlp_set_tabstop(h, 384, WHLP_ALIGN_LEFT); |
2243 | whlp_para_attr(h, WHLP_PARA_SPACEABOVE, 12); |
2244 | whlp_begin_para(h, WHLP_PARA_SCROLL); |
2245 | whlp_set_font(h, 1); |
2246 | whlp_text(h, "Ooh:"); whlp_tab(h); |
2247 | whlp_text(h, "Right?"); whlp_tab(h); |
2248 | whlp_text(h, "Centre?"); whlp_tab(h); |
2249 | whlp_text(h, "Left?"); |
2250 | whlp_end_para(h); |
2251 | |
2252 | whlp_set_tabstop(h, 128, WHLP_ALIGN_RIGHT); |
2253 | whlp_set_tabstop(h, 256, WHLP_ALIGN_CENTRE); |
2254 | whlp_set_tabstop(h, 384, WHLP_ALIGN_LEFT); |
2255 | whlp_begin_para(h, WHLP_PARA_SCROLL); |
2256 | whlp_set_font(h, 1); |
2257 | whlp_text(h, "Aah:"); whlp_tab(h); |
2258 | whlp_text(h, "R?"); whlp_tab(h); |
2259 | whlp_text(h, "C?"); whlp_tab(h); |
2260 | whlp_text(h, "L?"); |
2261 | whlp_end_para(h); |
2262 | |
2263 | sprintf(mymacro, "CBB(\"btn_up\",\"JI(`',`%s')\");EB(\"btn_up\")", |
2264 | whlp_topic_id(t1)); |
2265 | |
2266 | whlp_begin_topic(h, t3, "Third Topic", mymacro, NULL); |
2267 | |
2268 | whlp_begin_para(h, WHLP_PARA_SCROLL); |
2269 | whlp_set_font(h, 1); |
83ac0deb |
2270 | whlp_text(h, "This third topic is not nearly as boring as the first, " |
2271 | "because it has a picture: "); |
2272 | { |
63d7b60d |
2273 | #ifndef PICTURE_FROM_CMDLINE |
83ac0deb |
2274 | const unsigned long palette[] = { |
2275 | 0xFF0000, |
2276 | 0xFFFF00, |
2277 | 0x00FF00, |
2278 | 0x00FFFF, |
2279 | 0x0000FF, |
2280 | }; |
2281 | const unsigned char picture[] = { |
2282 | 0, 0, 0, 0, 1, 2, 3, 4, |
2283 | 0, 0, 0, 0, 1, 2, 3, 4, |
2284 | 0, 0, 0, 0, 1, 2, 3, 4, |
2285 | 0, 0, 0, 1, 2, 3, 4, 4, |
2286 | 0, 0, 0, 1, 2, 3, 4, 4, |
2287 | 0, 0, 0, 1, 2, 3, 4, 4, |
2288 | 0, 0, 1, 2, 3, 4, 4, 4, |
2289 | 0, 0, 1, 2, 3, 4, 4, 4, |
2290 | 0, 0, 1, 2, 3, 4, 4, 4, |
2291 | 0, 1, 2, 3, 4, 4, 4, 4, |
2292 | 0, 1, 2, 3, 4, 4, 4, 4, |
2293 | 0, 1, 2, 3, 4, 4, 4, 4, |
2294 | }; |
63d7b60d |
2295 | int wid = 8, ht = 12; |
2296 | #else |
2297 | png_pixel ppalette[256]; |
2298 | unsigned long palette[256]; |
2299 | unsigned char *picture; |
2300 | png *png; |
2301 | colquant *cq; |
2302 | int plen, i, err, wid, ht; |
2303 | |
2304 | if (argc < 2) { |
2305 | fprintf(stderr, "in this mode I need a .png file on the" |
2306 | " command line\n"); |
2307 | return 1; |
2308 | } |
2309 | png = png_decode_file(argv[1], &err); |
2310 | if (!png) { |
2311 | fprintf(stderr, "%s: PNG read error: %s\n", argv[1], |
2312 | png_error_msg[err]); |
2313 | return 1; |
2314 | } |
2315 | |
2316 | cq = colquant_new(256, 8); |
2317 | colquant_data(cq, png->pixels, png->width * png->height); |
2318 | plen = colquant_get_palette(cq, ppalette); |
2319 | colquant_free(cq); |
2320 | assert(plen <= 256); |
2321 | for (i = 0; i < plen; i++) { |
2322 | palette[i] = ppalette[i].r >> 8; |
2323 | palette[i] <<= 8; |
2324 | palette[i] |= ppalette[i].g >> 8; |
2325 | palette[i] <<= 8; |
2326 | palette[i] |= ppalette[i].b >> 8; |
2327 | } |
2328 | picture = malloc(png->width * png->height); |
2329 | dither_image(png->width, png->height, png->pixels, |
2330 | ppalette, plen, picture); |
2331 | wid = png->width; |
2332 | ht = png->height; |
2333 | png_free(png); |
2334 | |
2335 | #endif |
2336 | whlp_ref_picture(h, whlp_add_picture(h, wid, ht, picture, palette)); |
83ac0deb |
2337 | } |
d7482997 |
2338 | whlp_end_para(h); |
2339 | |
2340 | /* |
2341 | * Browse sequence. |
2342 | */ |
2343 | whlp_browse_link(h, t1, t2); |
2344 | whlp_browse_link(h, t2, t3); |
2345 | |
2346 | /* |
2347 | * Index terms. |
2348 | */ |
2349 | whlp_index_term(h, "foobarbaz", t1); |
2350 | whlp_index_term(h, "foobarbaz", t2); |
2351 | whlp_index_term(h, "foobarbaz", t3); |
2352 | whlp_index_term(h, "foobar", t1); |
2353 | whlp_index_term(h, "foobar", t2); |
2354 | whlp_index_term(h, "foobaz", t1); |
2355 | whlp_index_term(h, "foobaz", t3); |
2356 | whlp_index_term(h, "barbaz", t2); |
2357 | whlp_index_term(h, "barbaz", t3); |
2358 | whlp_index_term(h, "foo", t1); |
2359 | whlp_index_term(h, "bar", t2); |
2360 | whlp_index_term(h, "baz", t3); |
2361 | |
2362 | whlp_close(h, "test.hlp"); |
2363 | return 0; |
2364 | } |
2365 | |
2366 | #endif |