dlls/hhctrl.ocx/content.c

   1 /*
   2  * Copyright 2007 Jacek Caban for CodeWeavers
   3  * Copyright 2011 Owen Rudge for CodeWeavers
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Lesser General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2.1 of the License, or (at your option) any later version.
   9  *
  10  * This library is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Lesser General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Lesser General Public
  16  * License along with this library; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  18  */
  19
  20 #define NONAMELESSUNION
  21 #define NONAMELESSSTRUCT
  22
  23 #include "hhctrl.h"
  24 #include "stream.h"
  25
  26 #include "wine/debug.h"
  27
  28 WINE_DEFAULT_DEBUG_CHANNEL(htmlhelp);
  29
  30 typedef enum {
  31     INSERT_NEXT,
  32     INSERT_CHILD
  33 } insert_type_t;
  34
  35 static void free_content_item(ContentItem *item)
  36 {
  37     ContentItem *next;
  38
  39     while(item) {
  40         next = item->next;
  41
  42         free_content_item(item->child);
  43
  44         heap_free(item->name);
  45         heap_free(item->local);
  46         heap_free(item->merge.chm_file);
  47         heap_free(item->merge.chm_index);
  48
  49         item = next;
  50     }
  51 }
  52
  53 static void parse_obj_node_param(ContentItem *item, ContentItem *hhc_root, const char *text, UINT code_page)
  54 {
  55     const char *ptr;
  56     LPWSTR *param, merge;
  57     int len;
  58
  59     ptr = get_attr(text, "name", &len);
  60     if(!ptr) {
  61         WARN("name attr not found\n");
  62         return;
  63     }
  64
  65     if(!strncasecmp("name", ptr, len)) {
  66         param = &item->name;
  67     }else if(!strncasecmp("merge", ptr, len)) {
  68         param = &merge;
  69     }else if(!strncasecmp("local", ptr, len)) {
  70         param = &item->local;
  71     }else {
  72         WARN("unhandled param %s\n", debugstr_an(ptr, len));
  73         return;
  74     }
  75
  76     ptr = get_attr(text, "value", &len);
  77     if(!ptr) {
  78         WARN("value attr not found\n");
  79         return;
  80     }
  81
  82     /*
  83      * "merge" parameter data (referencing another CHM file) can be incorporated into the "local" parameter
  84      * by specifying the filename in the format:
  85      *  MS-ITS:file.chm::/local_path.htm
  86      */
  87     if(param == &item->local && strstr(ptr, "::"))
  88     {
  89         const char *local = strstr(ptr, "::")+2;
  90         int local_len = len-(local-ptr);
  91
  92         item->local = decode_html(local, local_len, code_page);
  93         param = &merge;
  94     }
  95
  96     *param = decode_html(ptr, len, code_page);
  97
  98     if(param == &merge) {
  99         SetChmPath(&item->merge, hhc_root->merge.chm_file, merge);
 100         heap_free(merge);
 101     }
 102 }
 103
 104 static ContentItem *parse_hhc(HHInfo*,IStream*,ContentItem*,insert_type_t*);
 105
 106 static ContentItem *insert_item(ContentItem *item, ContentItem *new_item, insert_type_t insert_type)
 107 {
 108     if(!item)
 109         return new_item;
 110
 111     if(!new_item)
 112         return item;
 113
 114     switch(insert_type) {
 115     case INSERT_NEXT:
 116         item->next = new_item;
 117         return new_item;
 118     case INSERT_CHILD:
 119         if(item->child) {
 120             ContentItem *iter = item->child;
 121             while(iter->next)
 122                 iter = iter->next;
 123             iter->next = new_item;
 124         }else {
 125             item->child = new_item;
 126         }
 127         return item;
 128     }
 129
 130     return NULL;
 131 }
 132
 133 static ContentItem *parse_sitemap_object(HHInfo *info, stream_t *stream, ContentItem *hhc_root,
 134         insert_type_t *insert_type)
 135 {
 136     strbuf_t node, node_name;
 137     ContentItem *item;
 138
 139     *insert_type = INSERT_NEXT;
 140
 141     strbuf_init(&node);
 142     strbuf_init(&node_name);
 143
 144     item = heap_alloc_zero(sizeof(ContentItem));
 145
 146     while(next_node(stream, &node)) {
 147         get_node_name(&node, &node_name);
 148
 149         TRACE("%s\n", node.buf);
 150
 151         if(!strcasecmp(node_name.buf, "/object"))
 152             break;
 153         if(!strcasecmp(node_name.buf, "param"))
 154             parse_obj_node_param(item, hhc_root, node.buf, info->pCHMInfo->codePage);
 155
 156         strbuf_zero(&node);
 157     }
 158
 159     strbuf_free(&node);
 160     strbuf_free(&node_name);
 161
 162     if(item->merge.chm_index) {
 163         IStream *merge_stream;
 164
 165         merge_stream = GetChmStream(info->pCHMInfo, item->merge.chm_file, &item->merge);
 166         if(merge_stream) {
 167             item->child = parse_hhc(info, merge_stream, hhc_root, insert_type);
 168             IStream_Release(merge_stream);
 169         }else {
 170             WARN("Could not get %s::%s stream\n", debugstr_w(item->merge.chm_file),
 171                  debugstr_w(item->merge.chm_file));
 172
 173             if(!item->name) {
 174                 free_content_item(item);
 175                 item = NULL;
 176             }
 177         }
 178
 179     }
 180
 181     return item;
 182 }
 183
 184 static ContentItem *parse_ul(HHInfo *info, stream_t *stream, ContentItem *hhc_root)
 185 {
 186     strbuf_t node, node_name;
 187     ContentItem *ret = NULL, *prev = NULL, *new_item = NULL;
 188     insert_type_t it;
 189
 190     strbuf_init(&node);
 191     strbuf_init(&node_name);
 192
 193     while(next_node(stream, &node)) {
 194         get_node_name(&node, &node_name);
 195
 196         TRACE("%s\n", node.buf);
 197
 198         if(!strcasecmp(node_name.buf, "object")) {
 199             const char *ptr;
 200             int len;
 201
 202             static const char sz_text_sitemap[] = "text/sitemap";
 203
 204             ptr = get_attr(node.buf, "type", &len);
 205
 206             if(ptr && len == sizeof(sz_text_sitemap)-1
 207                && !memcmp(ptr, sz_text_sitemap, len)) {
 208                 new_item = parse_sitemap_object(info, stream, hhc_root, &it);
 209                 prev = insert_item(prev, new_item, it);
 210                 if(!ret)
 211                     ret = prev;
 212             }
 213         }else if(!strcasecmp(node_name.buf, "ul")) {
 214             new_item = parse_ul(info, stream, hhc_root);
 215             insert_item(prev, new_item, INSERT_CHILD);
 216         }else if(!strcasecmp(node_name.buf, "/ul")) {
 217             break;
 218         }
 219
 220         strbuf_zero(&node);
 221     }
 222
 223     strbuf_free(&node);
 224     strbuf_free(&node_name);
 225
 226     return ret;
 227 }
 228
 229 static ContentItem *parse_hhc(HHInfo *info, IStream *str, ContentItem *hhc_root,
 230         insert_type_t *insert_type)
 231 {
 232     stream_t stream;
 233     strbuf_t node, node_name;
 234     ContentItem *ret = NULL, *prev = NULL;
 235
 236     *insert_type = INSERT_NEXT;
 237
 238     strbuf_init(&node);
 239     strbuf_init(&node_name);
 240
 241     stream_init(&stream, str);
 242
 243     while(next_node(&stream, &node)) {
 244         get_node_name(&node, &node_name);
 245
 246         TRACE("%s\n", node.buf);
 247
 248         if(!strcasecmp(node_name.buf, "ul")) {
 249             ContentItem *item = parse_ul(info, &stream, hhc_root);
 250             prev = insert_item(prev, item, INSERT_CHILD);
 251             if(!ret)
 252                 ret = prev;
 253             *insert_type = INSERT_CHILD;
 254         }
 255
 256         strbuf_zero(&node);
 257     }
 258
 259     strbuf_free(&node);
 260     strbuf_free(&node_name);
 261
 262     return ret;
 263 }
 264
 265 static void insert_content_item(HWND hwnd, ContentItem *parent, ContentItem *item)
 266 {
 267     TVINSERTSTRUCTW tvis;
 268
 269     memset(&tvis, 0, sizeof(tvis));
 270     tvis.u.item.mask = TVIF_TEXT|TVIF_PARAM;
 271     tvis.u.item.cchTextMax = strlenW(item->name)+1;
 272     tvis.u.item.pszText = item->name;
 273     tvis.u.item.lParam = (LPARAM)item;
 274     tvis.hParent = parent ? parent->id : 0;
 275     tvis.hInsertAfter = TVI_LAST;
 276
 277     item->id = (HTREEITEM)SendMessageW(hwnd, TVM_INSERTITEMW, 0, (LPARAM)&tvis);
 278 }
 279
 280 static void fill_content_tree(HWND hwnd, ContentItem *parent, ContentItem *item)
 281 {
 282     while(item) {
 283         if(item->name) {
 284             insert_content_item(hwnd, parent, item);
 285             fill_content_tree(hwnd, item, item->child);
 286         }else {
 287             fill_content_tree(hwnd, parent, item->child);
 288         }
 289         item = item->next;
 290     }
 291 }
 292
 293 static void set_item_parents(ContentItem *parent, ContentItem *item)
 294 {
 295     while(item) {
 296         item->parent = parent;
 297         set_item_parents(item, item->child);
 298         item = item->next;
 299     }
 300 }
 301
 302 void InitContent(HHInfo *info)
 303 {
 304     IStream *stream;
 305     insert_type_t insert_type;
 306
 307     info->content = heap_alloc_zero(sizeof(ContentItem));
 308     SetChmPath(&info->content->merge, info->pCHMInfo->szFile, info->WinType.pszToc);
 309
 310     stream = GetChmStream(info->pCHMInfo, info->pCHMInfo->szFile, &info->content->merge);
 311     if(!stream) {
 312         TRACE("Could not get content stream\n");
 313         return;
 314     }
 315
 316     info->content->child = parse_hhc(info, stream, info->content, &insert_type);
 317     IStream_Release(stream);
 318
 319     set_item_parents(NULL, info->content);
 320     fill_content_tree(info->tabs[TAB_CONTENTS].hwnd, NULL, info->content);
 321 }
 322
 323 void ReleaseContent(HHInfo *info)
 324 {
 325     free_content_item(info->content);
 326 }
 327
 328 void ActivateContentTopic(HWND hWnd, LPCWSTR filename, ContentItem *item)
 329 {
 330     if (lstrcmpiW(item->local, filename) == 0)
 331     {
 332         SendMessageW(hWnd, TVM_SELECTITEM, TVGN_CARET, (LPARAM) item->id);
 333         return;
 334     }
 335
 336     if (item->next)
 337         ActivateContentTopic(hWnd, filename, item->next);
 338
 339     if (item->child)
 340         ActivateContentTopic(hWnd, filename, item->child);
 341 }