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)
37 if(!chm->strings_stream)
40 if(chm->strings_size <= (offset >> BLOCK_BITS)) {
41 chm->strings_size = (offset >> BLOCK_BITS)+1;
43 chm->strings = heap_realloc_zero(chm->strings,
44 chm->strings_size*sizeof(char*));
46 chm->strings = heap_alloc_zero(
47 chm->strings_size*sizeof(char*));
51 if(!chm->strings[offset >> BLOCK_BITS]) {
56 pos.QuadPart = offset & ~BLOCK_MASK;
57 hres = IStream_Seek(chm->strings_stream, pos, STREAM_SEEK_SET, NULL);
59 WARN("Seek failed: %08x\n", hres);
63 chm->strings[offset >> BLOCK_BITS] = heap_alloc(BLOCK_SIZE);
65 hres = IStream_Read(chm->strings_stream, chm->strings[offset >> BLOCK_BITS],
68 WARN("Read failed: %08x\n", hres);
69 heap_free(chm->strings[offset >> BLOCK_BITS]);
70 chm->strings[offset >> BLOCK_BITS] = NULL;
75 return chm->strings[offset >> BLOCK_BITS] + (offset & BLOCK_MASK);
78 static BOOL ReadChmSystem(CHMInfo *chm)
81 DWORD ver=0xdeadbeef, read, buf_size;
90 static const WCHAR wszSYSTEM[] = {'#','S','Y','S','T','E','M',0};
92 hres = IStorage_OpenStream(chm->pStorage, wszSYSTEM, NULL, STGM_READ, 0, &stream);
94 WARN("Could not open #SYSTEM stream: %08x\n", hres);
98 IStream_Read(stream, &ver, sizeof(ver), &read);
99 TRACE("version is %x\n", ver);
101 buf = heap_alloc(8*sizeof(DWORD));
102 buf_size = 8*sizeof(DWORD);
105 hres = IStream_Read(stream, &entry, sizeof(entry), &read);
109 if(entry.len > buf_size)
110 buf = heap_realloc(buf, buf_size=entry.len);
112 hres = IStream_Read(stream, buf, entry.len, &read);
118 TRACE("TOC is %s\n", debugstr_an(buf, entry.len));
119 heap_free(chm->defToc);
120 chm->defToc = strdupnAtoW(buf, entry.len);
123 TRACE("Default topic is %s\n", debugstr_an(buf, entry.len));
124 heap_free(chm->defTopic);
125 chm->defTopic = strdupnAtoW(buf, entry.len);
128 TRACE("Title is %s\n", debugstr_an(buf, entry.len));
129 heap_free(chm->defTitle);
130 chm->defTitle = strdupnAtoW(buf, entry.len);
133 TRACE("Default window is %s\n", debugstr_an(buf, entry.len));
136 TRACE("Compiled file is %s\n", debugstr_an(buf, entry.len));
139 TRACE("Version is %s\n", debugstr_an(buf, entry.len));
142 TRACE("Time is %08x\n", *(DWORD*)buf);
145 TRACE("Number of info types: %d\n", *(DWORD*)buf);
148 TRACE("Check sum: %x\n", *(DWORD*)buf);
151 TRACE("unhandled code %x, size %x\n", entry.code, entry.len);
156 IStream_Release(stream);
158 return SUCCEEDED(hres);
161 LPWSTR FindContextAlias(CHMInfo *chm, DWORD index)
169 static const WCHAR wszIVB[] = {'#','I','V','B',0};
171 hres = IStorage_OpenStream(chm->pStorage, wszIVB, NULL, STGM_READ, 0, &ivb_stream);
173 WARN("Could not open #IVB stream: %08x\n", hres);
177 hres = IStream_Read(ivb_stream, &size, sizeof(size), &read);
179 WARN("Read failed: %08x\n", hres);
180 IStream_Release(ivb_stream);
184 buf = heap_alloc(size);
185 hres = IStream_Read(ivb_stream, buf, size, &read);
186 IStream_Release(ivb_stream);
188 WARN("Read failed: %08x\n", hres);
193 size /= 2*sizeof(DWORD);
195 for(i=0; i<size; i++) {
196 if(buf[2*i] == index) {
197 ret = GetChmString(chm, buf[2*i+1]);
204 TRACE("returning %s\n", debugstr_a(ret));
205 return strdupAtoW(ret);
208 /* Loads the HH_WINTYPE data from the CHM file
210 * FIXME: There may be more than one window type in the file, so
211 * add the ability to choose a certain window type
213 BOOL LoadWinTypeFromCHM(HHInfo *info)
215 LARGE_INTEGER liOffset;
216 IStorage *pStorage = info->pCHMInfo->pStorage;
221 static const WCHAR windowsW[] = {'#','W','I','N','D','O','W','S',0};
223 hr = IStorage_OpenStream(pStorage, windowsW, NULL, STGM_READ, 0, &pStream);
226 /* no defined window types so use (hopefully) sane defaults */
227 static const WCHAR defaultwinW[] = {'d','e','f','a','u','l','t','w','i','n','\0'};
228 static const WCHAR null[] = {0};
229 memset((void*)&(info->WinType), 0, sizeof(info->WinType));
230 info->WinType.cbStruct=sizeof(info->WinType);
231 info->WinType.fUniCodeStrings=TRUE;
232 info->WinType.pszType=strdupW(defaultwinW);
233 info->WinType.pszToc = strdupW(info->pCHMInfo->defToc ? info->pCHMInfo->defToc : null);
234 info->WinType.pszIndex = strdupW(null);
235 info->WinType.fsValidMembers=0;
236 info->WinType.fsWinProperties=HHWIN_PROP_TRI_PANE;
237 info->WinType.pszCaption=strdupW(info->pCHMInfo->defTitle);
238 info->WinType.dwStyles=WS_POPUP;
239 info->WinType.dwExStyles=0;
240 info->WinType.nShowState=SW_SHOW;
241 info->WinType.pszFile=strdupW(info->pCHMInfo->defTopic);
242 info->WinType.curNavType=HHWIN_NAVTYPE_TOC;
246 /* jump past the #WINDOWS header */
247 liOffset.QuadPart = sizeof(DWORD) * 2;
249 hr = IStream_Seek(pStream, liOffset, STREAM_SEEK_SET, NULL);
250 if (FAILED(hr)) goto done;
252 /* read the HH_WINTYPE struct data */
253 hr = IStream_Read(pStream, &info->WinType, sizeof(info->WinType), &cbRead);
254 if (FAILED(hr)) goto done;
256 /* convert the #STRINGS offsets to actual strings */
257 info->WinType.pszType = info->pszType = strdupAtoW(GetChmString(info->pCHMInfo, (DWORD_PTR)info->WinType.pszType));
258 info->WinType.pszCaption = info->pszCaption = strdupAtoW(GetChmString(info->pCHMInfo, (DWORD_PTR)info->WinType.pszCaption));
259 info->WinType.pszToc = info->pszToc = strdupAtoW(GetChmString(info->pCHMInfo, (DWORD_PTR)info->WinType.pszToc));
260 info->WinType.pszIndex = info->pszIndex = strdupAtoW(GetChmString(info->pCHMInfo, (DWORD_PTR)info->WinType.pszIndex));
261 info->WinType.pszFile = info->pszFile = strdupAtoW(GetChmString(info->pCHMInfo, (DWORD_PTR)info->WinType.pszFile));
262 info->WinType.pszHome = info->pszHome = strdupAtoW(GetChmString(info->pCHMInfo, (DWORD_PTR)info->WinType.pszHome));
263 info->WinType.pszJump1 = info->pszJump1 = strdupAtoW(GetChmString(info->pCHMInfo, (DWORD_PTR)info->WinType.pszJump1));
264 info->WinType.pszJump2 = info->pszJump2 = strdupAtoW(GetChmString(info->pCHMInfo, (DWORD_PTR)info->WinType.pszJump2));
265 info->WinType.pszUrlJump1 = info->pszUrlJump1 = strdupAtoW(GetChmString(info->pCHMInfo, (DWORD_PTR)info->WinType.pszUrlJump1));
266 info->WinType.pszUrlJump2 = info->pszUrlJump2 = strdupAtoW(GetChmString(info->pCHMInfo, (DWORD_PTR)info->WinType.pszUrlJump2));
268 /* FIXME: pszCustomTabs is a list of multiple zero-terminated strings so ReadString won't
272 info->WinType.pszCustomTabs = info->pszCustomTabs = CHM_ReadString(pChmInfo, (DWORD_PTR)info->WinType.pszCustomTabs);
276 IStream_Release(pStream);
278 return SUCCEEDED(hr);
281 static LPCWSTR skip_schema(LPCWSTR url)
283 static const WCHAR its_schema[] = {'i','t','s',':'};
284 static const WCHAR msits_schema[] = {'m','s','-','i','t','s',':'};
285 static const WCHAR mk_schema[] = {'m','k',':','@','M','S','I','T','S','t','o','r','e',':'};
287 if(!strncmpiW(its_schema, url, sizeof(its_schema)/sizeof(WCHAR)))
288 return url+sizeof(its_schema)/sizeof(WCHAR);
289 if(!strncmpiW(msits_schema, url, sizeof(msits_schema)/sizeof(WCHAR)))
290 return url+sizeof(msits_schema)/sizeof(WCHAR);
291 if(!strncmpiW(mk_schema, url, sizeof(mk_schema)/sizeof(WCHAR)))
292 return url+sizeof(mk_schema)/sizeof(WCHAR);
297 void SetChmPath(ChmPath *file, LPCWSTR base_file, LPCWSTR path)
300 static const WCHAR separatorW[] = {':',':',0};
302 path = skip_schema(path);
304 ptr = strstrW(path, separatorW);
306 WCHAR chm_file[MAX_PATH];
307 WCHAR rel_path[MAX_PATH];
308 WCHAR base_path[MAX_PATH];
311 strcpyW(base_path, base_file);
312 p = strrchrW(base_path, '\\');
316 memcpy(rel_path, path, (ptr-path)*sizeof(WCHAR));
317 rel_path[ptr-path] = 0;
319 PathCombineW(chm_file, base_path, rel_path);
321 file->chm_file = strdupW(chm_file);
324 file->chm_file = strdupW(base_file);
328 file->chm_index = strdupW(ptr);
330 TRACE("ChmFile = {%s %s}\n", debugstr_w(file->chm_file), debugstr_w(file->chm_index));
333 IStream *GetChmStream(CHMInfo *info, LPCWSTR parent_chm, ChmPath *chm_file)
336 IStream *stream = NULL;
339 TRACE("%s (%s :: %s)\n", debugstr_w(parent_chm), debugstr_w(chm_file->chm_file),
340 debugstr_w(chm_file->chm_index));
342 if(parent_chm || chm_file->chm_file) {
343 hres = IITStorage_StgOpenStorage(info->pITStorage,
344 chm_file->chm_file ? chm_file->chm_file : parent_chm, NULL,
345 STGM_READ | STGM_SHARE_DENY_WRITE, NULL, 0, &storage);
347 WARN("Could not open storage: %08x\n", hres);
351 storage = info->pStorage;
352 IStorage_AddRef(info->pStorage);
355 hres = IStorage_OpenStream(storage, chm_file->chm_index, NULL, STGM_READ, 0, &stream);
356 IStorage_Release(storage);
358 WARN("Could not open stream: %08x\n", hres);
363 /* Opens the CHM file for reading */
364 CHMInfo *OpenCHM(LPCWSTR szFile)
369 static const WCHAR wszSTRINGS[] = {'#','S','T','R','I','N','G','S',0};
371 if (!(ret = heap_alloc_zero(sizeof(CHMInfo))))
374 if (!(ret->szFile = strdupW(szFile))) {
379 hres = CoCreateInstance(&CLSID_ITStorage, NULL, CLSCTX_INPROC_SERVER,
380 &IID_IITStorage, (void **) &ret->pITStorage) ;
382 WARN("Could not create ITStorage: %08x\n", hres);
383 return CloseCHM(ret);
386 hres = IITStorage_StgOpenStorage(ret->pITStorage, szFile, NULL,
387 STGM_READ | STGM_SHARE_DENY_WRITE, NULL, 0, &ret->pStorage);
389 WARN("Could not open storage: %08x\n", hres);
390 return CloseCHM(ret);
393 hres = IStorage_OpenStream(ret->pStorage, wszSTRINGS, NULL, STGM_READ, 0,
394 &ret->strings_stream);
396 WARN("Could not open #STRINGS stream: %08x\n", hres);
397 /* It's not critical, so we pass */
400 if(!ReadChmSystem(ret)) {
401 WARN("Could not read #SYSTEM\n");
402 return CloseCHM(ret);
408 CHMInfo *CloseCHM(CHMInfo *chm)
411 IITStorage_Release(chm->pITStorage);
414 IStorage_Release(chm->pStorage);
416 if(chm->strings_stream)
417 IStream_Release(chm->strings_stream);
419 if(chm->strings_size) {
422 for(i=0; i<chm->strings_size; i++)
423 heap_free(chm->strings[i]);
426 heap_free(chm->strings);
427 heap_free(chm->defTitle);
428 heap_free(chm->defTopic);
429 heap_free(chm->defToc);
430 heap_free(chm->szFile);