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
26 #include "wine/debug.h"
28 WINE_DEFAULT_DEBUG_CHANNEL(htmlhelp);
31 #define BLOCK_SIZE (1 << BLOCK_BITS)
32 #define BLOCK_MASK (BLOCK_SIZE-1)
34 /* Reads a string from the #STRINGS section in the CHM file */
35 static LPCSTR GetChmString(CHMInfo *chm, DWORD offset)
39 if(!chm->strings_stream)
42 if(chm->strings_size <= (offset >> BLOCK_BITS)) {
43 chm->strings_size = (offset >> BLOCK_BITS)+1;
45 chm->strings = heap_realloc_zero(chm->strings,
46 chm->strings_size*sizeof(char*));
48 chm->strings = heap_alloc_zero(
49 chm->strings_size*sizeof(char*));
53 if(!chm->strings[offset >> BLOCK_BITS]) {
58 pos.QuadPart = offset & ~BLOCK_MASK;
59 hres = IStream_Seek(chm->strings_stream, pos, STREAM_SEEK_SET, NULL);
61 WARN("Seek failed: %08x\n", hres);
65 chm->strings[offset >> BLOCK_BITS] = heap_alloc(BLOCK_SIZE);
67 hres = IStream_Read(chm->strings_stream, chm->strings[offset >> BLOCK_BITS],
70 WARN("Read failed: %08x\n", hres);
71 heap_free(chm->strings[offset >> BLOCK_BITS]);
72 chm->strings[offset >> BLOCK_BITS] = NULL;
77 str = chm->strings[offset >> BLOCK_BITS] + (offset & BLOCK_MASK);
78 TRACE("offset %#x => %s\n", offset, debugstr_a(str));
82 static BOOL ReadChmSystem(CHMInfo *chm)
85 DWORD ver=0xdeadbeef, read, buf_size;
94 static const WCHAR wszSYSTEM[] = {'#','S','Y','S','T','E','M',0};
96 hres = IStorage_OpenStream(chm->pStorage, wszSYSTEM, NULL, STGM_READ, 0, &stream);
98 WARN("Could not open #SYSTEM stream: %08x\n", hres);
102 IStream_Read(stream, &ver, sizeof(ver), &read);
103 TRACE("version is %x\n", ver);
105 buf = heap_alloc(8*sizeof(DWORD));
106 buf_size = 8*sizeof(DWORD);
109 hres = IStream_Read(stream, &entry, sizeof(entry), &read);
113 if(entry.len > buf_size)
114 buf = heap_realloc(buf, buf_size=entry.len);
116 hres = IStream_Read(stream, buf, entry.len, &read);
122 TRACE("TOC is %s\n", debugstr_an(buf, entry.len));
123 heap_free(chm->defToc);
124 chm->defToc = strdupnAtoW(buf, entry.len);
127 TRACE("Default topic is %s\n", debugstr_an(buf, entry.len));
128 heap_free(chm->defTopic);
129 chm->defTopic = strdupnAtoW(buf, entry.len);
132 TRACE("Title is %s\n", debugstr_an(buf, entry.len));
133 heap_free(chm->defTitle);
134 chm->defTitle = strdupnAtoW(buf, entry.len);
137 /* TODO: Currently only the Locale ID is loaded from this field */
138 TRACE("Locale is: %d\n", *(LCID*)&buf[0]);
139 if(!GetLocaleInfoW(*(LCID*)&buf[0], LOCALE_IDEFAULTANSICODEPAGE|LOCALE_RETURN_NUMBER,
140 (WCHAR *)&chm->codePage, sizeof(chm->codePage)/sizeof(WCHAR)))
141 chm->codePage = CP_ACP;
144 TRACE("Default window is %s\n", debugstr_an(buf, entry.len));
147 TRACE("Compiled file is %s\n", debugstr_an(buf, entry.len));
148 heap_free(chm->compiledFile);
149 chm->compiledFile = strdupnAtoW(buf, entry.len);
152 TRACE("Version is %s\n", debugstr_an(buf, entry.len));
155 TRACE("Time is %08x\n", *(DWORD*)buf);
158 TRACE("Number of info types: %d\n", *(DWORD*)buf);
161 TRACE("Check sum: %x\n", *(DWORD*)buf);
164 TRACE("unhandled code %x, size %x\n", entry.code, entry.len);
169 IStream_Release(stream);
171 return SUCCEEDED(hres);
174 LPWSTR FindContextAlias(CHMInfo *chm, DWORD index)
182 static const WCHAR wszIVB[] = {'#','I','V','B',0};
184 hres = IStorage_OpenStream(chm->pStorage, wszIVB, NULL, STGM_READ, 0, &ivb_stream);
186 WARN("Could not open #IVB stream: %08x\n", hres);
190 hres = IStream_Read(ivb_stream, &size, sizeof(size), &read);
192 WARN("Read failed: %08x\n", hres);
193 IStream_Release(ivb_stream);
197 buf = heap_alloc(size);
198 hres = IStream_Read(ivb_stream, buf, size, &read);
199 IStream_Release(ivb_stream);
201 WARN("Read failed: %08x\n", hres);
206 size /= 2*sizeof(DWORD);
208 for(i=0; i<size; i++) {
209 if(buf[2*i] == index) {
210 ret = GetChmString(chm, buf[2*i+1]);
217 TRACE("returning %s\n", debugstr_a(ret));
218 return strdupAtoW(ret);
222 * Tests if the file <chmfile>.<ext> exists, used for loading Indices, Table of Contents, etc.
223 * when these files are not available from the HH_WINTYPE structure.
225 static WCHAR *FindHTMLHelpSetting(HHInfo *info, const WCHAR *extW)
227 static const WCHAR periodW[] = {'.',0};
228 IStorage *pStorage = info->pCHMInfo->pStorage;
233 filename = heap_alloc( (strlenW(info->pCHMInfo->compiledFile)
234 + strlenW(periodW) + strlenW(extW) + 1) * sizeof(WCHAR) );
235 strcpyW(filename, info->pCHMInfo->compiledFile);
236 strcatW(filename, periodW);
237 strcatW(filename, extW);
238 hr = IStorage_OpenStream(pStorage, filename, NULL, STGM_READ, 0, &pStream);
242 return strdupAtoW("");
244 IStream_Release(pStream);
248 /* Loads the HH_WINTYPE data from the CHM file
250 * FIXME: There may be more than one window type in the file, so
251 * add the ability to choose a certain window type
253 BOOL LoadWinTypeFromCHM(HHInfo *info)
255 LARGE_INTEGER liOffset;
256 IStorage *pStorage = info->pCHMInfo->pStorage;
261 static const WCHAR null[] = {0};
262 static const WCHAR toc_extW[] = {'h','h','c',0};
263 static const WCHAR index_extW[] = {'h','h','k',0};
264 static const WCHAR windowsW[] = {'#','W','I','N','D','O','W','S',0};
266 hr = IStorage_OpenStream(pStorage, windowsW, NULL, STGM_READ, 0, &pStream);
269 /* no defined window types so use (hopefully) sane defaults */
270 static const WCHAR defaultwinW[] = {'d','e','f','a','u','l','t','w','i','n','\0'};
271 memset((void*)&(info->WinType), 0, sizeof(info->WinType));
272 info->WinType.cbStruct=sizeof(info->WinType);
273 info->WinType.fUniCodeStrings=TRUE;
274 info->WinType.pszType=strdupW(defaultwinW);
275 info->WinType.pszToc = strdupW(info->pCHMInfo->defToc ? info->pCHMInfo->defToc : null);
276 info->WinType.pszIndex = strdupW(null);
277 info->WinType.fsValidMembers=0;
278 info->WinType.fsWinProperties=HHWIN_PROP_TRI_PANE;
279 info->WinType.pszCaption=strdupW(info->pCHMInfo->defTitle ? info->pCHMInfo->defTitle : null);
280 info->WinType.dwStyles=WS_POPUP;
281 info->WinType.dwExStyles=0;
282 info->WinType.nShowState=SW_SHOW;
283 info->WinType.pszFile=strdupW(info->pCHMInfo->defTopic ? info->pCHMInfo->defTopic : null);
284 info->WinType.curNavType=HHWIN_NAVTYPE_TOC;
288 /* jump past the #WINDOWS header */
289 liOffset.QuadPart = sizeof(DWORD) * 2;
291 hr = IStream_Seek(pStream, liOffset, STREAM_SEEK_SET, NULL);
292 if (FAILED(hr)) goto done;
294 /* read the HH_WINTYPE struct data */
295 hr = IStream_Read(pStream, &info->WinType, sizeof(info->WinType), &cbRead);
296 if (FAILED(hr)) goto done;
298 /* convert the #STRINGS offsets to actual strings */
300 info->WinType.pszType = info->pszType = strdupAtoW(GetChmString(info->pCHMInfo, (DWORD_PTR)info->WinType.pszType));
301 info->WinType.pszCaption = info->pszCaption = strdupAtoW(GetChmString(info->pCHMInfo, (DWORD_PTR)info->WinType.pszCaption));
302 info->WinType.pszHome = info->pszHome = strdupAtoW(GetChmString(info->pCHMInfo, (DWORD_PTR)info->WinType.pszHome));
303 info->WinType.pszJump1 = info->pszJump1 = strdupAtoW(GetChmString(info->pCHMInfo, (DWORD_PTR)info->WinType.pszJump1));
304 info->WinType.pszJump2 = info->pszJump2 = strdupAtoW(GetChmString(info->pCHMInfo, (DWORD_PTR)info->WinType.pszJump2));
305 info->WinType.pszUrlJump1 = info->pszUrlJump1 = strdupAtoW(GetChmString(info->pCHMInfo, (DWORD_PTR)info->WinType.pszUrlJump1));
306 info->WinType.pszUrlJump2 = info->pszUrlJump2 = strdupAtoW(GetChmString(info->pCHMInfo, (DWORD_PTR)info->WinType.pszUrlJump2));
308 if (info->WinType.pszFile)
309 info->WinType.pszFile = info->pszFile = strdupAtoW(GetChmString(info->pCHMInfo, (DWORD_PTR)info->WinType.pszFile));
311 info->WinType.pszFile = strdupW(info->pCHMInfo->defTopic ? info->pCHMInfo->defTopic : null);
312 if (info->WinType.pszToc)
313 info->WinType.pszToc = info->pszToc = strdupAtoW(GetChmString(info->pCHMInfo, (DWORD_PTR)info->WinType.pszToc));
315 info->WinType.pszToc = info->pszToc = FindHTMLHelpSetting(info, toc_extW);
316 if (info->WinType.pszIndex)
317 info->WinType.pszIndex = info->pszIndex = strdupAtoW(GetChmString(info->pCHMInfo, (DWORD_PTR)info->WinType.pszIndex));
319 info->WinType.pszIndex = info->pszIndex = FindHTMLHelpSetting(info, index_extW);
321 /* FIXME: pszCustomTabs is a list of multiple zero-terminated strings so ReadString won't
325 info->WinType.pszCustomTabs = info->pszCustomTabs = CHM_ReadString(pChmInfo, (DWORD_PTR)info->WinType.pszCustomTabs);
329 IStream_Release(pStream);
331 return SUCCEEDED(hr);
334 LPCWSTR skip_schema(LPCWSTR url)
336 static const WCHAR its_schema[] = {'i','t','s',':'};
337 static const WCHAR msits_schema[] = {'m','s','-','i','t','s',':'};
338 static const WCHAR mk_schema[] = {'m','k',':','@','M','S','I','T','S','t','o','r','e',':'};
340 if(!strncmpiW(its_schema, url, sizeof(its_schema)/sizeof(WCHAR)))
341 return url+sizeof(its_schema)/sizeof(WCHAR);
342 if(!strncmpiW(msits_schema, url, sizeof(msits_schema)/sizeof(WCHAR)))
343 return url+sizeof(msits_schema)/sizeof(WCHAR);
344 if(!strncmpiW(mk_schema, url, sizeof(mk_schema)/sizeof(WCHAR)))
345 return url+sizeof(mk_schema)/sizeof(WCHAR);
350 void SetChmPath(ChmPath *file, LPCWSTR base_file, LPCWSTR path)
353 static const WCHAR separatorW[] = {':',':',0};
355 path = skip_schema(path);
357 ptr = strstrW(path, separatorW);
359 WCHAR chm_file[MAX_PATH];
360 WCHAR rel_path[MAX_PATH];
361 WCHAR base_path[MAX_PATH];
364 strcpyW(base_path, base_file);
365 p = strrchrW(base_path, '\\');
369 memcpy(rel_path, path, (ptr-path)*sizeof(WCHAR));
370 rel_path[ptr-path] = 0;
372 PathCombineW(chm_file, base_path, rel_path);
374 file->chm_file = strdupW(chm_file);
377 file->chm_file = strdupW(base_file);
381 file->chm_index = strdupW(ptr);
383 TRACE("ChmFile = {%s %s}\n", debugstr_w(file->chm_file), debugstr_w(file->chm_index));
386 IStream *GetChmStream(CHMInfo *info, LPCWSTR parent_chm, ChmPath *chm_file)
389 IStream *stream = NULL;
392 TRACE("%s (%s :: %s)\n", debugstr_w(parent_chm), debugstr_w(chm_file->chm_file),
393 debugstr_w(chm_file->chm_index));
395 if(parent_chm || chm_file->chm_file) {
396 hres = IITStorage_StgOpenStorage(info->pITStorage,
397 chm_file->chm_file ? chm_file->chm_file : parent_chm, NULL,
398 STGM_READ | STGM_SHARE_DENY_WRITE, NULL, 0, &storage);
400 WARN("Could not open storage: %08x\n", hres);
404 storage = info->pStorage;
405 IStorage_AddRef(info->pStorage);
408 hres = IStorage_OpenStream(storage, chm_file->chm_index, NULL, STGM_READ, 0, &stream);
409 IStorage_Release(storage);
411 WARN("Could not open stream: %08x\n", hres);
416 /* Opens the CHM file for reading */
417 CHMInfo *OpenCHM(LPCWSTR szFile)
422 static const WCHAR wszSTRINGS[] = {'#','S','T','R','I','N','G','S',0};
424 if (!(ret = heap_alloc_zero(sizeof(CHMInfo))))
426 ret->codePage = CP_ACP;
428 if (!(ret->szFile = strdupW(szFile))) {
433 hres = CoCreateInstance(&CLSID_ITStorage, NULL, CLSCTX_INPROC_SERVER,
434 &IID_IITStorage, (void **) &ret->pITStorage) ;
436 WARN("Could not create ITStorage: %08x\n", hres);
437 return CloseCHM(ret);
440 hres = IITStorage_StgOpenStorage(ret->pITStorage, szFile, NULL,
441 STGM_READ | STGM_SHARE_DENY_WRITE, NULL, 0, &ret->pStorage);
443 WARN("Could not open storage: %08x\n", hres);
444 return CloseCHM(ret);
446 hres = IStorage_OpenStream(ret->pStorage, wszSTRINGS, NULL, STGM_READ, 0,
447 &ret->strings_stream);
449 WARN("Could not open #STRINGS stream: %08x\n", hres);
450 /* It's not critical, so we pass */
453 if(!ReadChmSystem(ret)) {
454 WARN("Could not read #SYSTEM\n");
455 return CloseCHM(ret);
461 CHMInfo *CloseCHM(CHMInfo *chm)
464 IITStorage_Release(chm->pITStorage);
467 IStorage_Release(chm->pStorage);
469 if(chm->strings_stream)
470 IStream_Release(chm->strings_stream);
472 if(chm->strings_size) {
475 for(i=0; i<chm->strings_size; i++)
476 heap_free(chm->strings[i]);
479 heap_free(chm->strings);
480 heap_free(chm->defTitle);
481 heap_free(chm->defTopic);
482 heap_free(chm->defToc);
483 heap_free(chm->szFile);
484 heap_free(chm->compiledFile);