hhctrl.ocx: Add HTML to Unicode decoding capability to the table of contents.
This commit is contained in:
Erich Hoover
Alexandre Julliard
parent
b527679d17
commit
9033b14438
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@ -50,16 +50,6 @@ static void free_content_item(ContentItem *item)
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}
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}
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static void store_param(LPWSTR *param, const char *value, int len)
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{
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int wlen;
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wlen = MultiByteToWideChar(CP_ACP, 0, value, len, NULL, 0);
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*param = heap_alloc((wlen+1)*sizeof(WCHAR));
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MultiByteToWideChar(CP_ACP, 0, value, len, *param, wlen);
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(*param)[wlen] = 0;
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}
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static void parse_obj_node_param(ContentItem *item, ContentItem *hhc_root, const char *text)
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{
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const char *ptr;
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@ -99,11 +89,11 @@ static void parse_obj_node_param(ContentItem *item, ContentItem *hhc_root, const
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const char *local = strstr(ptr, "::")+2;
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int local_len = len-(local-ptr);
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store_param(&item->local, local, local_len);
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item->local = decode_html(local, local_len);
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param = &merge;
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}
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store_param(param, ptr, len);
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*param = decode_html(ptr, len);
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if(param == &merge) {
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SetChmPath(&item->merge, hhc_root->merge.chm_file, merge);
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@ -50,6 +50,119 @@ static void ExpandContract(HHInfo *pHHInfo);
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static const WCHAR szEmpty[] = {0};
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struct html_encoded_symbol {
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const char *html_code;
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char ansi_symbol;
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};
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/*
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* Table mapping the conversion between HTML encoded symbols and their ANSI code page equivalent.
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* Note: Add additional entries in proper alphabetical order (a binary search is used on this table).
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*/
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struct html_encoded_symbol html_encoded_symbols[] =
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{
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{"AElig", 0xC6},
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{"Aacute", 0xC1},
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{"Acirc", 0xC2},
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{"Agrave", 0xC0},
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{"Aring", 0xC5},
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{"Atilde", 0xC3},
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{"Auml", 0xC4},
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{"Ccedil", 0xC7},
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{"ETH", 0xD0},
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{"Eacute", 0xC9},
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{"Ecirc", 0xCA},
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{"Egrave", 0xC8},
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{"Euml", 0xCB},
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{"Iacute", 0xCD},
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{"Icirc", 0xCE},
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{"Igrave", 0xCC},
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{"Iuml", 0xCF},
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{"Ntilde", 0xD1},
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{"Oacute", 0xD3},
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{"Ocirc", 0xD4},
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{"Ograve", 0xD2},
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{"Oslash", 0xD8},
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{"Otilde", 0xD5},
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{"Ouml", 0xD6},
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{"THORN", 0xDE},
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{"Uacute", 0xDA},
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{"Ucirc", 0xDB},
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{"Ugrave", 0xD9},
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{"Uuml", 0xDC},
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{"Yacute", 0xDD},
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{"aacute", 0xE1},
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{"acirc", 0xE2},
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{"acute", 0xB4},
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{"aelig", 0xE6},
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{"agrave", 0xE0},
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{"amp", '&'},
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{"aring", 0xE5},
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{"atilde", 0xE3},
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{"auml", 0xE4},
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{"brvbar", 0xA6},
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{"ccedil", 0xE7},
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{"cedil", 0xB8},
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{"cent", 0xA2},
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{"copy", 0xA9},
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{"curren", 0xA4},
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{"deg", 0xB0},
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{"divide", 0xF7},
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{"eacute", 0xE9},
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{"ecirc", 0xEA},
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{"egrave", 0xE8},
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{"eth", 0xF0},
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{"euml", 0xEB},
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{"frac12", 0xBD},
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{"frac14", 0xBC},
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{"frac34", 0xBE},
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{"gt", '>'},
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{"iacute", 0xED},
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{"icirc", 0xEE},
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{"iexcl", 0xA1},
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{"igrave", 0xEC},
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{"iquest", 0xBF},
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{"iuml", 0xEF},
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{"laquo", 0xAB},
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{"lt", '<'},
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{"macr", 0xAF},
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{"micro", 0xB5},
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{"middot", 0xB7},
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{"nbsp", ' '},
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{"not", 0xAC},
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{"ntilde", 0xF1},
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{"oacute", 0xF3},
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{"ocirc", 0xF4},
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{"ograve", 0xF2},
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{"ordf", 0xAA},
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{"ordm", 0xBA},
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{"oslash", 0xF8},
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{"otilde", 0xF5},
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{"ouml", 0xF6},
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{"para", 0xB6},
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{"plusmn", 0xB1},
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{"pound", 0xA3},
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{"quot", '"'},
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{"raquo", 0xBB},
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{"reg", 0xAE},
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{"sect", 0xA7},
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{"shy", 0xAD},
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{"sup1", 0xB9},
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{"sup2", 0xB2},
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{"sup3", 0xB3},
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{"szlig", 0xDF},
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{"thorn", 0xFE},
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{"times", 0xD7},
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{"uacute", 0xFA},
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{"ucirc", 0xFB},
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{"ugrave", 0xF9},
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{"uml", 0xA8},
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{"uuml", 0xFC},
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{"yacute", 0xFD},
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{"yen", 0xA5},
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{"yuml", 0xFF}
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};
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/* Loads a string from the resource file */
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static LPWSTR HH_LoadString(DWORD dwID)
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{
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@ -1654,3 +1767,92 @@ HHInfo *CreateHelpViewer(LPCWSTR filename)
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return info;
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}
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/*
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* Search the table of HTML entities and return the corresponding ANSI symbol.
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*/
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static char find_html_symbol(const char *entity, int entity_len)
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{
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int max = sizeof(html_encoded_symbols)/sizeof(html_encoded_symbols[0])-1;
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int min = 0, dir;
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while(min <= max)
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{
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int pos = (min+max)/2;
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const char *encoded_symbol = html_encoded_symbols[pos].html_code;
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dir = strncmp(encoded_symbol, entity, entity_len);
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if(dir == 0 && !encoded_symbol[entity_len]) return html_encoded_symbols[pos].ansi_symbol;
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if(dir < 0)
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min = pos+1;
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else
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max = pos-1;
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}
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return 0;
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}
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/*
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* Decode a string containing HTML encoded characters into a unicode string.
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*/
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WCHAR *decode_html(const char *html_fragment, int html_fragment_len)
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{
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const char *h = html_fragment;
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char *amp, *sem, symbol, *tmp;
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int len, tmp_len = 0;
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WCHAR *unicode_text;
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tmp = heap_alloc(html_fragment_len+1);
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while(1)
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{
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symbol = 0;
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amp = strchr(h, '&');
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if(!amp) break;
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len = amp-h;
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/* Copy the characters prior to the HTML encoded character */
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memcpy(&tmp[tmp_len], h, len);
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tmp_len += len;
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amp++; /* skip ampersand */
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sem = strchr(amp, ';');
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/* Require a semicolon after the ampersand */
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if(!sem)
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{
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h = amp;
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tmp[tmp_len++] = '&';
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continue;
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}
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/* Find the symbol either by using the ANSI character number (prefixed by the pound symbol)
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* or by searching the HTML entity table */
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len = sem-amp;
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if(amp[0] == '#')
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{
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char *endnum = NULL;
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int tmp;
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tmp = (char) strtol(amp, &endnum, 10);
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if(endnum == sem)
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symbol = tmp;
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}
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else
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symbol = find_html_symbol(amp, len);
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if(!symbol)
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{
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FIXME("Failed to translate HTML encoded character '&%.*s;'.\n", len, amp);
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h = amp;
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tmp[tmp_len++] = '&';
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continue;
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}
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/* Insert the new symbol */
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h = sem+1;
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tmp[tmp_len++] = symbol;
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}
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/* Convert any remaining characters */
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len = html_fragment_len-(h-html_fragment);
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memcpy(&tmp[tmp_len], h, len);
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tmp_len += len;
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tmp[tmp_len++] = 0; /* NULL-terminate the string */
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len = MultiByteToWideChar(CP_ACP, 0, tmp, tmp_len, NULL, 0);
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unicode_text = heap_alloc(len*sizeof(WCHAR));
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MultiByteToWideChar(CP_ACP, 0, tmp, tmp_len, unicode_text, len);
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heap_free(tmp);
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return unicode_text;
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}
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@ -193,6 +193,8 @@ void ReleaseSearch(HHInfo *info) DECLSPEC_HIDDEN;
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LPCWSTR skip_schema(LPCWSTR url) DECLSPEC_HIDDEN;
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WCHAR *decode_html(const char *html_fragment, int html_fragment_len);
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/* memory allocation functions */
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static inline void * __WINE_ALLOC_SIZE(1) heap_alloc(size_t len)
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