4 * Copyright 2005 James Hawkins
5 * Copyright 2007 Jacek Caban
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this library; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
27 #include "wine/debug.h"
29 WINE_DEFAULT_DEBUG_CHANNEL(htmlhelp);
31 /* Reads a string from the #STRINGS section in the CHM file */
32 static LPCSTR GetChmString(CHMInfo *chm, DWORD offset)
36 if(!chm->strings_stream)
39 if(chm->strings_size <= (offset >> BLOCK_BITS)) {
40 chm->strings_size = (offset >> BLOCK_BITS)+1;
42 chm->strings = heap_realloc_zero(chm->strings,
43 chm->strings_size*sizeof(char*));
45 chm->strings = heap_alloc_zero(
46 chm->strings_size*sizeof(char*));
50 if(!chm->strings[offset >> BLOCK_BITS]) {
55 pos.QuadPart = offset & ~BLOCK_MASK;
56 hres = IStream_Seek(chm->strings_stream, pos, STREAM_SEEK_SET, NULL);
58 WARN("Seek failed: %08x\n", hres);
62 chm->strings[offset >> BLOCK_BITS] = heap_alloc(BLOCK_SIZE);
64 hres = IStream_Read(chm->strings_stream, chm->strings[offset >> BLOCK_BITS],
67 WARN("Read failed: %08x\n", hres);
68 heap_free(chm->strings[offset >> BLOCK_BITS]);
69 chm->strings[offset >> BLOCK_BITS] = NULL;
74 str = chm->strings[offset >> BLOCK_BITS] + (offset & BLOCK_MASK);
75 TRACE("offset %#x => %s\n", offset, debugstr_a(str));
79 static BOOL ReadChmSystem(CHMInfo *chm)
82 DWORD ver=0xdeadbeef, read, buf_size;
91 static const WCHAR wszSYSTEM[] = {'#','S','Y','S','T','E','M',0};
93 hres = IStorage_OpenStream(chm->pStorage, wszSYSTEM, NULL, STGM_READ, 0, &stream);
95 WARN("Could not open #SYSTEM stream: %08x\n", hres);
99 IStream_Read(stream, &ver, sizeof(ver), &read);
100 TRACE("version is %x\n", ver);
102 buf = heap_alloc(8*sizeof(DWORD));
103 buf_size = 8*sizeof(DWORD);
106 hres = IStream_Read(stream, &entry, sizeof(entry), &read);
110 if(entry.len > buf_size)
111 buf = heap_realloc(buf, buf_size=entry.len);
113 hres = IStream_Read(stream, buf, entry.len, &read);
119 TRACE("TOC is %s\n", debugstr_an(buf, entry.len));
120 heap_free(chm->defToc);
121 chm->defToc = strdupnAtoW(buf, entry.len);
124 TRACE("Default topic is %s\n", debugstr_an(buf, entry.len));
125 heap_free(chm->defTopic);
126 chm->defTopic = strdupnAtoW(buf, entry.len);
129 TRACE("Title is %s\n", debugstr_an(buf, entry.len));
130 heap_free(chm->defTitle);
131 chm->defTitle = strdupnAtoW(buf, entry.len);
134 /* TODO: Currently only the Locale ID is loaded from this field */
135 TRACE("Locale is: %d\n", *(LCID*)&buf[0]);
136 if(!GetLocaleInfoW(*(LCID*)&buf[0], LOCALE_IDEFAULTANSICODEPAGE|LOCALE_RETURN_NUMBER,
137 (WCHAR *)&chm->codePage, sizeof(chm->codePage)/sizeof(WCHAR)))
138 chm->codePage = CP_ACP;
141 TRACE("Default window is %s\n", debugstr_an(buf, entry.len));
144 TRACE("Compiled file is %s\n", debugstr_an(buf, entry.len));
145 heap_free(chm->compiledFile);
146 chm->compiledFile = strdupnAtoW(buf, entry.len);
149 TRACE("Version is %s\n", debugstr_an(buf, entry.len));
152 TRACE("Time is %08x\n", *(DWORD*)buf);
155 TRACE("Number of info types: %d\n", *(DWORD*)buf);
158 TRACE("Check sum: %x\n", *(DWORD*)buf);
161 TRACE("unhandled code %x, size %x\n", entry.code, entry.len);
166 IStream_Release(stream);
168 return SUCCEEDED(hres);
171 LPWSTR FindContextAlias(CHMInfo *chm, DWORD index)
179 static const WCHAR wszIVB[] = {'#','I','V','B',0};
181 hres = IStorage_OpenStream(chm->pStorage, wszIVB, NULL, STGM_READ, 0, &ivb_stream);
183 WARN("Could not open #IVB stream: %08x\n", hres);
187 hres = IStream_Read(ivb_stream, &size, sizeof(size), &read);
189 WARN("Read failed: %08x\n", hres);
190 IStream_Release(ivb_stream);
194 buf = heap_alloc(size);
195 hres = IStream_Read(ivb_stream, buf, size, &read);
196 IStream_Release(ivb_stream);
198 WARN("Read failed: %08x\n", hres);
203 size /= 2*sizeof(DWORD);
205 for(i=0; i<size; i++) {
206 if(buf[2*i] == index) {
207 ret = GetChmString(chm, buf[2*i+1]);
214 TRACE("returning %s\n", debugstr_a(ret));
215 return strdupAtoW(ret);
219 * Tests if the file <chmfile>.<ext> exists, used for loading Indices, Table of Contents, etc.
220 * when these files are not available from the HH_WINTYPE structure.
222 static WCHAR *FindHTMLHelpSetting(HHInfo *info, const WCHAR *extW)
224 static const WCHAR periodW[] = {'.',0};
225 IStorage *pStorage = info->pCHMInfo->pStorage;
230 filename = heap_alloc( (strlenW(info->pCHMInfo->compiledFile)
231 + strlenW(periodW) + strlenW(extW) + 1) * sizeof(WCHAR) );
232 strcpyW(filename, info->pCHMInfo->compiledFile);
233 strcatW(filename, periodW);
234 strcatW(filename, extW);
235 hr = IStorage_OpenStream(pStorage, filename, NULL, STGM_READ, 0, &pStream);
239 return strdupAtoW("");
241 IStream_Release(pStream);
245 /* Loads the HH_WINTYPE data from the CHM file
247 * FIXME: There may be more than one window type in the file, so
248 * add the ability to choose a certain window type
250 BOOL LoadWinTypeFromCHM(HHInfo *info)
252 LARGE_INTEGER liOffset;
253 IStorage *pStorage = info->pCHMInfo->pStorage;
258 static const WCHAR null[] = {0};
259 static const WCHAR toc_extW[] = {'h','h','c',0};
260 static const WCHAR index_extW[] = {'h','h','k',0};
261 static const WCHAR windowsW[] = {'#','W','I','N','D','O','W','S',0};
263 hr = IStorage_OpenStream(pStorage, windowsW, NULL, STGM_READ, 0, &pStream);
266 /* no defined window types so use (hopefully) sane defaults */
267 static const WCHAR defaultwinW[] = {'d','e','f','a','u','l','t','w','i','n','\0'};
268 memset((void*)&(info->WinType), 0, sizeof(info->WinType));
269 info->WinType.cbStruct=sizeof(info->WinType);
270 info->WinType.fUniCodeStrings=TRUE;
271 info->WinType.pszType=strdupW(defaultwinW);
272 info->WinType.pszToc = strdupW(info->pCHMInfo->defToc ? info->pCHMInfo->defToc : null);
273 info->WinType.pszIndex = strdupW(null);
274 info->WinType.fsValidMembers=0;
275 info->WinType.fsWinProperties=HHWIN_PROP_TRI_PANE;
276 info->WinType.pszCaption=strdupW(info->pCHMInfo->defTitle ? info->pCHMInfo->defTitle : null);
277 info->WinType.dwStyles=WS_POPUP;
278 info->WinType.dwExStyles=0;
279 info->WinType.nShowState=SW_SHOW;
280 info->WinType.pszFile=strdupW(info->pCHMInfo->defTopic ? info->pCHMInfo->defTopic : null);
281 info->WinType.curNavType=HHWIN_NAVTYPE_TOC;
285 /* jump past the #WINDOWS header */
286 liOffset.QuadPart = sizeof(DWORD) * 2;
288 hr = IStream_Seek(pStream, liOffset, STREAM_SEEK_SET, NULL);
289 if (FAILED(hr)) goto done;
291 /* read the HH_WINTYPE struct data */
292 hr = IStream_Read(pStream, &info->WinType, sizeof(info->WinType), &cbRead);
293 if (FAILED(hr)) goto done;
295 /* convert the #STRINGS offsets to actual strings */
297 info->WinType.pszType = info->pszType = strdupAtoW(GetChmString(info->pCHMInfo, (DWORD_PTR)info->WinType.pszType));
298 info->WinType.pszCaption = info->pszCaption = strdupAtoW(GetChmString(info->pCHMInfo, (DWORD_PTR)info->WinType.pszCaption));
299 info->WinType.pszHome = info->pszHome = strdupAtoW(GetChmString(info->pCHMInfo, (DWORD_PTR)info->WinType.pszHome));
300 info->WinType.pszJump1 = info->pszJump1 = strdupAtoW(GetChmString(info->pCHMInfo, (DWORD_PTR)info->WinType.pszJump1));
301 info->WinType.pszJump2 = info->pszJump2 = strdupAtoW(GetChmString(info->pCHMInfo, (DWORD_PTR)info->WinType.pszJump2));
302 info->WinType.pszUrlJump1 = info->pszUrlJump1 = strdupAtoW(GetChmString(info->pCHMInfo, (DWORD_PTR)info->WinType.pszUrlJump1));
303 info->WinType.pszUrlJump2 = info->pszUrlJump2 = strdupAtoW(GetChmString(info->pCHMInfo, (DWORD_PTR)info->WinType.pszUrlJump2));
305 if (info->WinType.pszFile)
306 info->WinType.pszFile = info->pszFile = strdupAtoW(GetChmString(info->pCHMInfo, (DWORD_PTR)info->WinType.pszFile));
308 info->WinType.pszFile = strdupW(info->pCHMInfo->defTopic ? info->pCHMInfo->defTopic : null);
309 if (info->WinType.pszToc)
310 info->WinType.pszToc = info->pszToc = strdupAtoW(GetChmString(info->pCHMInfo, (DWORD_PTR)info->WinType.pszToc));
312 info->WinType.pszToc = info->pszToc = FindHTMLHelpSetting(info, toc_extW);
313 if (info->WinType.pszIndex)
314 info->WinType.pszIndex = info->pszIndex = strdupAtoW(GetChmString(info->pCHMInfo, (DWORD_PTR)info->WinType.pszIndex));
316 info->WinType.pszIndex = info->pszIndex = FindHTMLHelpSetting(info, index_extW);
318 /* FIXME: pszCustomTabs is a list of multiple zero-terminated strings so ReadString won't
322 info->WinType.pszCustomTabs = info->pszCustomTabs = CHM_ReadString(pChmInfo, (DWORD_PTR)info->WinType.pszCustomTabs);
326 IStream_Release(pStream);
328 return SUCCEEDED(hr);
331 LPCWSTR skip_schema(LPCWSTR url)
333 static const WCHAR its_schema[] = {'i','t','s',':'};
334 static const WCHAR msits_schema[] = {'m','s','-','i','t','s',':'};
335 static const WCHAR mk_schema[] = {'m','k',':','@','M','S','I','T','S','t','o','r','e',':'};
337 if(!strncmpiW(its_schema, url, sizeof(its_schema)/sizeof(WCHAR)))
338 return url+sizeof(its_schema)/sizeof(WCHAR);
339 if(!strncmpiW(msits_schema, url, sizeof(msits_schema)/sizeof(WCHAR)))
340 return url+sizeof(msits_schema)/sizeof(WCHAR);
341 if(!strncmpiW(mk_schema, url, sizeof(mk_schema)/sizeof(WCHAR)))
342 return url+sizeof(mk_schema)/sizeof(WCHAR);
347 void SetChmPath(ChmPath *file, LPCWSTR base_file, LPCWSTR path)
350 static const WCHAR separatorW[] = {':',':',0};
352 path = skip_schema(path);
354 ptr = strstrW(path, separatorW);
356 WCHAR chm_file[MAX_PATH];
357 WCHAR rel_path[MAX_PATH];
358 WCHAR base_path[MAX_PATH];
361 strcpyW(base_path, base_file);
362 p = strrchrW(base_path, '\\');
366 memcpy(rel_path, path, (ptr-path)*sizeof(WCHAR));
367 rel_path[ptr-path] = 0;
369 PathCombineW(chm_file, base_path, rel_path);
371 file->chm_file = strdupW(chm_file);
374 file->chm_file = strdupW(base_file);
378 file->chm_index = strdupW(ptr);
380 TRACE("ChmFile = {%s %s}\n", debugstr_w(file->chm_file), debugstr_w(file->chm_index));
383 IStream *GetChmStream(CHMInfo *info, LPCWSTR parent_chm, ChmPath *chm_file)
386 IStream *stream = NULL;
389 TRACE("%s (%s :: %s)\n", debugstr_w(parent_chm), debugstr_w(chm_file->chm_file),
390 debugstr_w(chm_file->chm_index));
392 if(parent_chm || chm_file->chm_file) {
393 hres = IITStorage_StgOpenStorage(info->pITStorage,
394 chm_file->chm_file ? chm_file->chm_file : parent_chm, NULL,
395 STGM_READ | STGM_SHARE_DENY_WRITE, NULL, 0, &storage);
397 WARN("Could not open storage: %08x\n", hres);
401 storage = info->pStorage;
402 IStorage_AddRef(info->pStorage);
405 hres = IStorage_OpenStream(storage, chm_file->chm_index, NULL, STGM_READ, 0, &stream);
406 IStorage_Release(storage);
408 WARN("Could not open stream: %08x\n", hres);
414 * Retrieve a CHM document and parse the data from the <title> element to get the document's title.
416 WCHAR *GetDocumentTitle(CHMInfo *info, LPCWSTR document)
418 strbuf_t node, node_name, content;
419 WCHAR *document_title = NULL;
425 TRACE("%s\n", debugstr_w(document));
427 storage = info->pStorage;
429 WARN("Could not open storage to obtain the title for a document.\n");
432 IStorage_AddRef(storage);
434 hres = IStorage_OpenStream(storage, document, NULL, STGM_READ, 0, &str);
435 IStorage_Release(storage);
437 WARN("Could not open stream: %08x\n", hres);
439 stream_init(&stream, str);
441 strbuf_init(&content);
442 strbuf_init(&node_name);
444 while(next_node(&stream, &node)) {
445 get_node_name(&node, &node_name);
447 TRACE("%s\n", node.buf);
449 if(!strcasecmp(node_name.buf, "title")) {
450 if(next_content(&stream, &content) && content.len > 1)
452 document_title = strdupnAtoW(&content.buf[1], content.len-1);
453 FIXME("magic: %s\n", debugstr_w(document_title));
462 strbuf_free(&content);
463 strbuf_free(&node_name);
464 IStream_Release(str);
466 return document_title;
469 /* Opens the CHM file for reading */
470 CHMInfo *OpenCHM(LPCWSTR szFile)
475 static const WCHAR wszSTRINGS[] = {'#','S','T','R','I','N','G','S',0};
477 if (!(ret = heap_alloc_zero(sizeof(CHMInfo))))
479 ret->codePage = CP_ACP;
481 if (!(ret->szFile = strdupW(szFile))) {
486 hres = CoCreateInstance(&CLSID_ITStorage, NULL, CLSCTX_INPROC_SERVER,
487 &IID_IITStorage, (void **) &ret->pITStorage) ;
489 WARN("Could not create ITStorage: %08x\n", hres);
490 return CloseCHM(ret);
493 hres = IITStorage_StgOpenStorage(ret->pITStorage, szFile, NULL,
494 STGM_READ | STGM_SHARE_DENY_WRITE, NULL, 0, &ret->pStorage);
496 WARN("Could not open storage: %08x\n", hres);
497 return CloseCHM(ret);
499 hres = IStorage_OpenStream(ret->pStorage, wszSTRINGS, NULL, STGM_READ, 0,
500 &ret->strings_stream);
502 WARN("Could not open #STRINGS stream: %08x\n", hres);
503 /* It's not critical, so we pass */
506 if(!ReadChmSystem(ret)) {
507 WARN("Could not read #SYSTEM\n");
508 return CloseCHM(ret);
514 CHMInfo *CloseCHM(CHMInfo *chm)
517 IITStorage_Release(chm->pITStorage);
520 IStorage_Release(chm->pStorage);
522 if(chm->strings_stream)
523 IStream_Release(chm->strings_stream);
525 if(chm->strings_size) {
528 for(i=0; i<chm->strings_size; i++)
529 heap_free(chm->strings[i]);
532 heap_free(chm->strings);
533 heap_free(chm->defTitle);
534 heap_free(chm->defTopic);
535 heap_free(chm->defToc);
536 heap_free(chm->szFile);
537 heap_free(chm->compiledFile);