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 TRACE("Default window is %s\n", debugstr_an(buf, entry.len));
140 TRACE("Compiled file is %s\n", debugstr_an(buf, entry.len));
141 heap_free(chm->compiledFile);
142 chm->compiledFile = strdupnAtoW(buf, entry.len);
145 TRACE("Version is %s\n", debugstr_an(buf, entry.len));
148 TRACE("Time is %08x\n", *(DWORD*)buf);
151 TRACE("Number of info types: %d\n", *(DWORD*)buf);
154 TRACE("Check sum: %x\n", *(DWORD*)buf);
157 TRACE("unhandled code %x, size %x\n", entry.code, entry.len);
162 IStream_Release(stream);
164 return SUCCEEDED(hres);
167 LPWSTR FindContextAlias(CHMInfo *chm, DWORD index)
175 static const WCHAR wszIVB[] = {'#','I','V','B',0};
177 hres = IStorage_OpenStream(chm->pStorage, wszIVB, NULL, STGM_READ, 0, &ivb_stream);
179 WARN("Could not open #IVB stream: %08x\n", hres);
183 hres = IStream_Read(ivb_stream, &size, sizeof(size), &read);
185 WARN("Read failed: %08x\n", hres);
186 IStream_Release(ivb_stream);
190 buf = heap_alloc(size);
191 hres = IStream_Read(ivb_stream, buf, size, &read);
192 IStream_Release(ivb_stream);
194 WARN("Read failed: %08x\n", hres);
199 size /= 2*sizeof(DWORD);
201 for(i=0; i<size; i++) {
202 if(buf[2*i] == index) {
203 ret = GetChmString(chm, buf[2*i+1]);
210 TRACE("returning %s\n", debugstr_a(ret));
211 return strdupAtoW(ret);
215 * Tests if the file <chmfile>.<ext> exists, used for loading Indicies, Table of Contents, etc.
216 * when these files are not available from the HH_WINTYPE structure.
218 static WCHAR *FindHTMLHelpSetting(HHInfo *info, const WCHAR *extW)
220 static const WCHAR periodW[] = {'.',0};
221 IStorage *pStorage = info->pCHMInfo->pStorage;
226 filename = heap_alloc( (strlenW(info->pCHMInfo->compiledFile)
227 + strlenW(periodW) + strlenW(extW) + 1) * sizeof(WCHAR) );
228 strcpyW(filename, info->pCHMInfo->compiledFile);
229 strcatW(filename, periodW);
230 strcatW(filename, extW);
231 hr = IStorage_OpenStream(pStorage, filename, NULL, STGM_READ, 0, &pStream);
235 return strdupAtoW("");
237 IStream_Release(pStream);
241 /* Loads the HH_WINTYPE data from the CHM file
243 * FIXME: There may be more than one window type in the file, so
244 * add the ability to choose a certain window type
246 BOOL LoadWinTypeFromCHM(HHInfo *info)
248 LARGE_INTEGER liOffset;
249 IStorage *pStorage = info->pCHMInfo->pStorage;
254 static const WCHAR toc_extW[] = {'h','h','c',0};
255 static const WCHAR index_extW[] = {'h','h','k',0};
256 static const WCHAR windowsW[] = {'#','W','I','N','D','O','W','S',0};
258 hr = IStorage_OpenStream(pStorage, windowsW, NULL, STGM_READ, 0, &pStream);
261 /* no defined window types so use (hopefully) sane defaults */
262 static const WCHAR defaultwinW[] = {'d','e','f','a','u','l','t','w','i','n','\0'};
263 static const WCHAR null[] = {0};
264 memset((void*)&(info->WinType), 0, sizeof(info->WinType));
265 info->WinType.cbStruct=sizeof(info->WinType);
266 info->WinType.fUniCodeStrings=TRUE;
267 info->WinType.pszType=strdupW(defaultwinW);
268 info->WinType.pszToc = strdupW(info->pCHMInfo->defToc ? info->pCHMInfo->defToc : null);
269 info->WinType.pszIndex = strdupW(null);
270 info->WinType.fsValidMembers=0;
271 info->WinType.fsWinProperties=HHWIN_PROP_TRI_PANE;
272 info->WinType.pszCaption=strdupW(info->pCHMInfo->defTitle ? info->pCHMInfo->defTitle : null);
273 info->WinType.dwStyles=WS_POPUP;
274 info->WinType.dwExStyles=0;
275 info->WinType.nShowState=SW_SHOW;
276 info->WinType.pszFile=strdupW(info->pCHMInfo->defTopic ? info->pCHMInfo->defTopic : null);
277 info->WinType.curNavType=HHWIN_NAVTYPE_TOC;
281 /* jump past the #WINDOWS header */
282 liOffset.QuadPart = sizeof(DWORD) * 2;
284 hr = IStream_Seek(pStream, liOffset, STREAM_SEEK_SET, NULL);
285 if (FAILED(hr)) goto done;
287 /* read the HH_WINTYPE struct data */
288 hr = IStream_Read(pStream, &info->WinType, sizeof(info->WinType), &cbRead);
289 if (FAILED(hr)) goto done;
291 /* convert the #STRINGS offsets to actual strings */
293 info->WinType.pszType = info->pszType = strdupAtoW(GetChmString(info->pCHMInfo, (DWORD_PTR)info->WinType.pszType));
294 info->WinType.pszCaption = info->pszCaption = strdupAtoW(GetChmString(info->pCHMInfo, (DWORD_PTR)info->WinType.pszCaption));
295 info->WinType.pszFile = info->pszFile = strdupAtoW(GetChmString(info->pCHMInfo, (DWORD_PTR)info->WinType.pszFile));
296 info->WinType.pszHome = info->pszHome = strdupAtoW(GetChmString(info->pCHMInfo, (DWORD_PTR)info->WinType.pszHome));
297 info->WinType.pszJump1 = info->pszJump1 = strdupAtoW(GetChmString(info->pCHMInfo, (DWORD_PTR)info->WinType.pszJump1));
298 info->WinType.pszJump2 = info->pszJump2 = strdupAtoW(GetChmString(info->pCHMInfo, (DWORD_PTR)info->WinType.pszJump2));
299 info->WinType.pszUrlJump1 = info->pszUrlJump1 = strdupAtoW(GetChmString(info->pCHMInfo, (DWORD_PTR)info->WinType.pszUrlJump1));
300 info->WinType.pszUrlJump2 = info->pszUrlJump2 = strdupAtoW(GetChmString(info->pCHMInfo, (DWORD_PTR)info->WinType.pszUrlJump2));
302 if (info->WinType.pszToc)
303 info->WinType.pszToc = info->pszToc = strdupAtoW(GetChmString(info->pCHMInfo, (DWORD_PTR)info->WinType.pszToc));
305 info->WinType.pszToc = info->pszToc = FindHTMLHelpSetting(info, toc_extW);
306 if (info->WinType.pszIndex)
307 info->WinType.pszIndex = info->pszIndex = strdupAtoW(GetChmString(info->pCHMInfo, (DWORD_PTR)info->WinType.pszIndex));
309 info->WinType.pszIndex = info->pszIndex = FindHTMLHelpSetting(info, index_extW);
311 /* FIXME: pszCustomTabs is a list of multiple zero-terminated strings so ReadString won't
315 info->WinType.pszCustomTabs = info->pszCustomTabs = CHM_ReadString(pChmInfo, (DWORD_PTR)info->WinType.pszCustomTabs);
319 IStream_Release(pStream);
321 return SUCCEEDED(hr);
324 LPCWSTR skip_schema(LPCWSTR url)
326 static const WCHAR its_schema[] = {'i','t','s',':'};
327 static const WCHAR msits_schema[] = {'m','s','-','i','t','s',':'};
328 static const WCHAR mk_schema[] = {'m','k',':','@','M','S','I','T','S','t','o','r','e',':'};
330 if(!strncmpiW(its_schema, url, sizeof(its_schema)/sizeof(WCHAR)))
331 return url+sizeof(its_schema)/sizeof(WCHAR);
332 if(!strncmpiW(msits_schema, url, sizeof(msits_schema)/sizeof(WCHAR)))
333 return url+sizeof(msits_schema)/sizeof(WCHAR);
334 if(!strncmpiW(mk_schema, url, sizeof(mk_schema)/sizeof(WCHAR)))
335 return url+sizeof(mk_schema)/sizeof(WCHAR);
340 void SetChmPath(ChmPath *file, LPCWSTR base_file, LPCWSTR path)
343 static const WCHAR separatorW[] = {':',':',0};
345 path = skip_schema(path);
347 ptr = strstrW(path, separatorW);
349 WCHAR chm_file[MAX_PATH];
350 WCHAR rel_path[MAX_PATH];
351 WCHAR base_path[MAX_PATH];
354 strcpyW(base_path, base_file);
355 p = strrchrW(base_path, '\\');
359 memcpy(rel_path, path, (ptr-path)*sizeof(WCHAR));
360 rel_path[ptr-path] = 0;
362 PathCombineW(chm_file, base_path, rel_path);
364 file->chm_file = strdupW(chm_file);
367 file->chm_file = strdupW(base_file);
371 file->chm_index = strdupW(ptr);
373 TRACE("ChmFile = {%s %s}\n", debugstr_w(file->chm_file), debugstr_w(file->chm_index));
376 IStream *GetChmStream(CHMInfo *info, LPCWSTR parent_chm, ChmPath *chm_file)
379 IStream *stream = NULL;
382 TRACE("%s (%s :: %s)\n", debugstr_w(parent_chm), debugstr_w(chm_file->chm_file),
383 debugstr_w(chm_file->chm_index));
385 if(parent_chm || chm_file->chm_file) {
386 hres = IITStorage_StgOpenStorage(info->pITStorage,
387 chm_file->chm_file ? chm_file->chm_file : parent_chm, NULL,
388 STGM_READ | STGM_SHARE_DENY_WRITE, NULL, 0, &storage);
390 WARN("Could not open storage: %08x\n", hres);
394 storage = info->pStorage;
395 IStorage_AddRef(info->pStorage);
398 hres = IStorage_OpenStream(storage, chm_file->chm_index, NULL, STGM_READ, 0, &stream);
399 IStorage_Release(storage);
401 WARN("Could not open stream: %08x\n", hres);
406 /* Opens the CHM file for reading */
407 CHMInfo *OpenCHM(LPCWSTR szFile)
412 static const WCHAR wszSTRINGS[] = {'#','S','T','R','I','N','G','S',0};
414 if (!(ret = heap_alloc_zero(sizeof(CHMInfo))))
417 if (!(ret->szFile = strdupW(szFile))) {
422 hres = CoCreateInstance(&CLSID_ITStorage, NULL, CLSCTX_INPROC_SERVER,
423 &IID_IITStorage, (void **) &ret->pITStorage) ;
425 WARN("Could not create ITStorage: %08x\n", hres);
426 return CloseCHM(ret);
429 hres = IITStorage_StgOpenStorage(ret->pITStorage, szFile, NULL,
430 STGM_READ | STGM_SHARE_DENY_WRITE, NULL, 0, &ret->pStorage);
432 WARN("Could not open storage: %08x\n", hres);
433 return CloseCHM(ret);
435 hres = IStorage_OpenStream(ret->pStorage, wszSTRINGS, NULL, STGM_READ, 0,
436 &ret->strings_stream);
438 WARN("Could not open #STRINGS stream: %08x\n", hres);
439 /* It's not critical, so we pass */
442 if(!ReadChmSystem(ret)) {
443 WARN("Could not read #SYSTEM\n");
444 return CloseCHM(ret);
450 CHMInfo *CloseCHM(CHMInfo *chm)
453 IITStorage_Release(chm->pITStorage);
456 IStorage_Release(chm->pStorage);
458 if(chm->strings_stream)
459 IStream_Release(chm->strings_stream);
461 if(chm->strings_size) {
464 for(i=0; i<chm->strings_size; i++)
465 heap_free(chm->strings[i]);
468 heap_free(chm->strings);
469 heap_free(chm->defTitle);
470 heap_free(chm->defTopic);
471 heap_free(chm->defToc);
472 heap_free(chm->szFile);
473 heap_free(chm->compiledFile);