html.c

php-4.4.7学习linux时下载的源代码

/*
   +----------------------------------------------------------------------+
   | PHP Version 4                                                        |
   +----------------------------------------------------------------------+
   | Copyright (c) 1997-2007 The PHP Group                                |
   +----------------------------------------------------------------------+
   | This source file is subject to version 3.01 of the PHP license,      |
   | that is bundled with this package in the file LICENSE, and is        |
   | available through the world-wide-web at the following url:           |
   | http://www.php.net/license/3_01.txt                                  |
   | If you did not receive a copy of the PHP license and are unable to   |
   | obtain it through the world-wide-web, please send a note to          |
   | [e-mail] so we can mail you a copy immediately.               |
   +----------------------------------------------------------------------+
   | Authors: Rasmus Lerdorf <[e-mail]>                             |
   |          Jaakko Hyv鋞ti <[e-mail]>                      |
   |          Wez Furlong <[e-mail]>                          |
   +----------------------------------------------------------------------+
*/

/* $Id: html.c,v 1.63.2.23.2.4 2007/01/01 09:46:48 sebastian Exp $ */

/*
 * HTML entity resources:
 *
 * http://msdn.microsoft.com/workshop/author/dhtml/reference/charsets/charset2.asp
 * http://msdn.microsoft.com/workshop/author/dhtml/reference/charsets/charset3.asp
 * http://www.unicode.org/Public/MAPPINGS/OBSOLETE/UNI2SGML.TXT
 *
 * http://www.w3.org/TR/2002/REC-xhtml1-20020801/dtds.html#h-A2
 *
 */

#include "php.h"
#if PHP_WIN32
#include "config.w32.h"
#else
#include <php_config.h>
#endif
#include "reg.h"
#include "html.h"
#include "php_string.h"
#include "SAPI.h"
#if HAVE_LOCALE_H
#include <locale.h>
#endif
#if HAVE_LANGINFO_H
#include <langinfo.h>
#endif

#if HAVE_MBSTRING
# include "ext/mbstring/mbstring.h"
ZEND_EXTERN_MODULE_GLOBALS(mbstring)
#endif

enum entity_charset { cs_terminator, cs_8859_1, cs_cp1252,
					  cs_8859_15, cs_utf_8, cs_big5, cs_gb2312, 
					  cs_big5hkscs, cs_sjis, cs_eucjp, cs_koi8r,
					  cs_cp1251, cs_8859_5, cs_cp866
					};
typedef const char *entity_table_t;

/* codepage 1252 is a Windows extension to iso-8859-1. */
static entity_table_t ent_cp_1252[] = {
	"euro", NULL, "sbquo", "fnof", "bdquo", "hellip", "dagger",
	"Dagger", "circ", "permil", "Scaron", "lsaquo", "OElig",
	NULL, NULL, NULL, NULL, "lsquo", "rsquo", "ldquo", "rdquo",
	"bull", "ndash", "mdash", "tilde", "trade", "scaron", "rsaquo",
	"oelig", NULL, NULL, "Yuml" 
};

static entity_table_t ent_iso_8859_1[] = {
	"nbsp", "iexcl", "cent", "pound", "curren", "yen", "brvbar",
	"sect", "uml", "copy", "ordf", "laquo", "not", "shy", "reg",
	"macr", "deg", "plusmn", "sup2", "sup3", "acute", "micro",
	"para", "middot", "cedil", "sup1", "ordm", "raquo", "frac14",
	"frac12", "frac34", "iquest", "Agrave", "Aacute", "Acirc",
	"Atilde", "Auml", "Aring", "AElig", "Ccedil", "Egrave",
	"Eacute", "Ecirc", "Euml", "Igrave", "Iacute", "Icirc",
	"Iuml", "ETH", "Ntilde", "Ograve", "Oacute", "Ocirc", "Otilde",
	"Ouml", "times", "Oslash", "Ugrave", "Uacute", "Ucirc", "Uuml",
	"Yacute", "THORN", "szlig", "agrave", "aacute", "acirc",
	"atilde", "auml", "aring", "aelig", "ccedil", "egrave",
	"eacute", "ecirc", "euml", "igrave", "iacute", "icirc",
	"iuml", "eth", "ntilde", "ograve", "oacute", "ocirc", "otilde",
	"ouml", "divide", "oslash", "ugrave", "uacute", "ucirc",
	"uuml", "yacute", "thorn", "yuml"
};

static entity_table_t ent_iso_8859_15[] = {
	"nbsp", "iexcl", "cent", "pound", "euro", "yen", "Scaron",
	"sect", "scaron", "copy", "ordf", "laquo", "not", "shy", "reg",
	"macr", "deg", "plusmn", "sup2", "sup3", NULL, /* Zcaron */
	"micro", "para", "middot", NULL, /* zcaron */ "sup1", "ordm",
	"raquo", "OElig", "oelig", "Yuml", "iquest", "Agrave", "Aacute",
	"Acirc", "Atilde", "Auml", "Aring", "AElig", "Ccedil", "Egrave",
	"Eacute", "Ecirc", "Euml", "Igrave", "Iacute", "Icirc",
	"Iuml", "ETH", "Ntilde", "Ograve", "Oacute", "Ocirc", "Otilde",
	"Ouml", "times", "Oslash", "Ugrave", "Uacute", "Ucirc", "Uuml",
	"Yacute", "THORN", "szlig", "agrave", "aacute", "acirc",
	"atilde", "auml", "aring", "aelig", "ccedil", "egrave",
	"eacute", "ecirc", "euml", "igrave", "iacute", "icirc",
	"iuml", "eth", "ntilde", "ograve", "oacute", "ocirc", "otilde",
	"ouml", "divide", "oslash", "ugrave", "uacute", "ucirc",
	"uuml", "yacute", "thorn", "yuml"
};

static entity_table_t ent_uni_338_402[] = {
	/* 338 */
	"OElig", "oelig", NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
	NULL, NULL, NULL, NULL,
	/* 352 */
	"Scaron", "scaron",
	/* 354  */
	NULL, NULL, NULL, NULL, NULL, NULL, NULL,
	NULL, NULL, NULL, NULL, NULL, NULL, NULL,
	NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
	/* 376 */
	"Yuml",
	/* 377  */
	NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
	NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
	NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
	NULL,
	/* 402 */
	"fnof"
};

static entity_table_t ent_uni_spacing[] = {
	/* 710 */
	"circ",
	/* 711 - 730 */
	NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
	NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
	/* 731 - 732 */
	NULL, "tilde"
};

static entity_table_t ent_uni_greek[] = {
	/* 913 */
	"Alpha", "Beta", "Gamma", "Delta", "Epsilon", "Zeta", "Eta", "Theta",
	"Iota", "Kappa", "Lambda", "Mu", "Nu", "Xi", "Omicron", "Pi", "Rho",
	NULL, "Sigma", "Tau", "Upsilon", "Phi", "Chi", "Psi", "Omega",
	/* 938 - 944 are not mapped */
	NULL, NULL, NULL, NULL, NULL, NULL, NULL,
	"alpha", "beta", "gamma", "delta", "epsilon", "zeta", "eta", "theta",
	"iota", "kappa", "lambda", "mu", "nu", "xi", "omicron", "pi", "rho",
	"sigmaf", "sigma", "tau", "upsilon", "phi", "chi", "psi", "omega",
	/* 970 - 976 are not mapped */
	NULL, NULL, NULL, NULL, NULL, NULL, NULL,
	"thetasym", "upsih",
	NULL, NULL, NULL,
	"piv" 
};

static entity_table_t ent_uni_punct[] = {
	/* 8194 */
	"ensp", "emsp", NULL, NULL, NULL, NULL, NULL,
	"thinsp", NULL, NULL, "zwnj", "zwj", "lrm", "rlm",
	NULL, NULL, NULL, "ndash", "mdash", NULL, NULL, NULL,
	"lsquo", "rsquo", "sbquo", NULL, "ldquo", "rdquo", "bdquo", NULL,
	"dagger", "Dagger",	"bull", NULL, NULL, NULL, "hellip",
	NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, "permil", NULL,
	"prime", "Prime", NULL, NULL, NULL, NULL, NULL, "lsaquo", "rsaquo",
	NULL, NULL, NULL, "oline", NULL, NULL, NULL, NULL, NULL,
	"frasl"
};

static entity_table_t ent_uni_euro[] = {
	"euro"
};

static entity_table_t ent_uni_8465_8501[] = {
	/* 8465 */
	"image", NULL, NULL, NULL, NULL, NULL, NULL,
	/* 8472 */
	"weierp", NULL, NULL, NULL,
	/* 8476 */
	"real", NULL, NULL, NULL, NULL, NULL,
	/* 8482 */
	"trade", NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
	NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
	/* 8501 */
	"alefsym",
};

static entity_table_t ent_uni_8592_9002[] = {
	/* 8592 (0x2190) */
	"larr", "uarr", "rarr", "darr", "harr", NULL, NULL, NULL,
	NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
	/* 8608 (0x21a0) */
	NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
	NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
	/* 8624 (0x21b0) */
	NULL, NULL, NULL, NULL, NULL, "crarr", NULL, NULL,
	NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
	/* 8640 (0x21c0) */
	NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
	NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
	/* 8656 (0x21d0) */
	"lArr", "uArr", "rArr", "dArr", "hArr", "vArr", NULL, NULL,
	NULL, NULL, "lAarr", "rAarr", NULL, "rarrw", NULL, NULL,
	/* 8672 (0x21e0) */
	NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
	NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
	NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
	NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
	/* 8704 (0x2200) */
	"forall", "comp", "part", "exist", "nexist", "empty", NULL, "nabla",
	"isin", "notin", "epsis", "ni", "notni", "bepsi", NULL, "prod",
	/* 8720 (0x2210) */
	"coprod", "sum", "minus", "mnplus", "plusdo", NULL, "setmn", "lowast",
	"compfn", NULL, "radic", NULL, NULL, "prop", "infin", "ang90",
	/* 8736 (0x2220) */
	"ang", "angmsd", "angsph", "mid", "nmid", "par", "npar", "and",
	"or", "cap", "cup", "int", NULL, NULL, "conint", NULL,
	/* 8752 (0x2230) */
	NULL, NULL, NULL, NULL, "there4", "becaus", NULL, NULL,
	NULL, NULL, NULL, NULL, "sim", "bsim", NULL, NULL,
	/* 8768 (0x2240) */
	"wreath", "nsim", NULL, "sime", "nsime", "cong", NULL, "ncong",
	"asymp", "nap", "ape", NULL, "bcong", "asymp", "bump", "bumpe",
	/* 8784 (0x2250) */
	NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
	NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
	/* 8800 (0x2260) */
	"ne", "equiv", NULL, NULL, "le", "ge", "lE", "gE",
	"lnE", "gnE", "Lt", "Gt", "twixt", NULL, "nlt", "ngt",
	/* 8816 (0x2270) */
	"nles", "nges", "lsim", "gsim", NULL, NULL, "lg", "gl",
	NULL, NULL, "pr", "sc", "cupre", "sscue", "prsim", "scsim",
	/* 8832 (0x2280) */
	"npr", "nsc", "sub", "sup", "nsub", "nsup", "sube", "supe",
	NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
	/* 8848 (0x2290) */
	NULL, NULL, NULL, NULL, NULL, "oplus", NULL, "otimes",
	NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
	/* 8864 (0x22a0) */
	NULL, NULL, NULL, NULL, NULL, "perp", NULL, NULL,
	NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
	/* 8880 (0x22b0) */
	NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
	NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
	/* 8896 (0x22c0) */
	NULL, NULL, NULL, NULL, NULL, "sdot", NULL, NULL,
	NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
	/* 8912 (0x22d0) */
	NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
	NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
	/* 8928 (0x22e0) */
	NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
	NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
	/* 8944 (0x22f0) */
	NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
	NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
	/* 8960 (0x2300) */
	NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
	"lceil", "rceil", "lfloor", "rfloor", NULL, NULL, NULL, NULL,
	/* 8976 (0x2310) */
	NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
	NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
	/* 8992 (0x2320) */
	NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
	NULL, "lang", "rang"
};

static entity_table_t ent_uni_9674[] = {
	/* 9674 */
	"loz"
};

static entity_table_t ent_uni_9824_9830[] = {
	/* 9824 */
	"spades", NULL, NULL, "clubs", NULL, "hearts", "diams"
};

static entity_table_t ent_koi8r[] = {
	"#1105", /* "jo "*/
	NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, 
	NULL, NULL, NULL, NULL, NULL, "#1025", /* "JO" */
	NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, 
	"#1102", "#1072", "#1073", "#1094", "#1076", "#1077", "#1092", 
	"#1075", "#1093", "#1080", "#1081", "#1082", "#1083", "#1084", 
	"#1085", "#1086", "#1087", "#1103", "#1088", "#1089", "#1090", 
	"#1091", "#1078", "#1074", "#1100", "#1099", "#1079", "#1096", 
	"#1101", "#1097", "#1095", "#1098", "#1070", "#1040", "#1041", 
	"#1062", "#1044", "#1045", "#1060", "#1043", "#1061", "#1048", 
	"#1049", "#1050", "#1051", "#1052", "#1053", "#1054", "#1055", 
	"#1071", "#1056", "#1057", "#1058", "#1059", "#1046", "#1042",
	"#1068", "#1067", "#1047", "#1064", "#1069", "#1065", "#1063", 
	"#1066"
};

static entity_table_t ent_cp_1251[] = {
	"#1026", "#1027", "#8218", "#1107", "#8222", "hellip", "dagger",
	"Dagger", "euro", "permil", "#1033", "#8249", "#1034", "#1036",
	"#1035", "#1039", "#1106", "#8216", "#8217", "#8219", "#8220",
	"bull", "ndash", "mdash", NULL, "trade", "#1113", "#8250",
	"#1114", "#1116", "#1115", "#1119", "nbsp", "#1038", "#1118",
	"#1032", "curren", "#1168", "brvbar", "sect", "#1025", "copy",
	"#1028", "laquo", "not", "shy", "reg", "#1031", "deg", "plusmn",
	"#1030", "#1110", "#1169", "micro", "para", "middot", "#1105",
	"#8470", "#1108", "raquo", "#1112", "#1029", "#1109", "#1111",
	"#1040", "#1041", "#1042", "#1043", "#1044", "#1045", "#1046",
	"#1047", "#1048", "#1049", "#1050", "#1051", "#1052", "#1053",
	"#1054", "#1055", "#1056", "#1057", "#1058", "#1059", "#1060",
	"#1061", "#1062", "#1063", "#1064", "#1065", "#1066", "#1067",
	"#1068", "#1069", "#1070", "#1071", "#1072", "#1073", "#1074",
	"#1075", "#1076", "#1077", "#1078", "#1079", "#1080", "#1081",
	"#1082", "#1083", "#1084", "#1085", "#1086", "#1087", "#1088",
	"#1089", "#1090", "#1091", "#1092", "#1093", "#1094", "#1095",
	"#1096", "#1097", "#1098", "#1099", "#1100", "#1101", "#1102",
	"#1103"
};

static entity_table_t ent_iso_8859_5[] = {
	"#1056", "#1057", "#1058", "#1059", "#1060", "#1061", "#1062",
	"#1063", "#1064", "#1065", "#1066", "#1067", "#1068", "#1069",
	"#1070", "#1071", "#1072", "#1073", "#1074", "#1075", "#1076",
	"#1077", "#1078", "#1079", "#1080", "#1081", "#1082", "#1083",
	"#1084", "#1085", "#1086", "#1087", "#1088", "#1089", "#1090",
	"#1091", "#1092", "#1093", "#1094", "#1095", "#1096", "#1097",
	"#1098", "#1099", "#1100", "#1101", "#1102", "#1103", "#1104",
	"#1105", "#1106", "#1107", "#1108", "#1109", "#1110", "#1111",
	"#1112", "#1113", "#1114", "#1115", "#1116", "#1117", "#1118",
	"#1119"
};

static entity_table_t ent_cp_866[] = {

	"#9492", "#9524", "#9516", "#9500", "#9472", "#9532", "#9566", 
	"#9567", "#9562", "#9556", "#9577", "#9574", "#9568", "#9552", 
	"#9580", "#9575", "#9576", "#9572", "#9573", "#9561", "#9560", 
	"#9554", "#9555", "#9579", "#9578", "#9496", "#9484", "#9608", 
	"#9604", "#9612", "#9616", "#9600", "#1088", "#1089", "#1090", 
	"#1091", "#1092", "#1093", "#1094", "#1095", "#1096", "#1097", 
	"#1098", "#1099", "#1100", "#1101", "#1102", "#1103", "#1025", 
	"#1105", "#1028", "#1108", "#1031", "#1111", "#1038", "#1118", 
	"#176", "#8729", "#183", "#8730", "#8470", "#164",  "#9632", 
	"#160"
};


struct html_entity_map {
	enum entity_charset charset;	/* charset identifier */
	unsigned short basechar;			/* char code at start of table */
	unsigned short endchar;			/* last char code in the table */
	entity_table_t *table;			/* the table of mappings */
};

static const struct html_entity_map entity_map[] = {
	{ cs_cp1252, 		0x80, 0x9f, ent_cp_1252 },
	{ cs_cp1252, 		0xa0, 0xff, ent_iso_8859_1 },
	{ cs_8859_1, 		0xa0, 0xff, ent_iso_8859_1 },
	{ cs_8859_15, 		0xa0, 0xff, ent_iso_8859_15 },
	{ cs_utf_8, 		0xa0, 0xff, ent_iso_8859_1 },
	{ cs_utf_8, 		338,  402,  ent_uni_338_402 },
	{ cs_utf_8, 		710,  732,  ent_uni_spacing },
	{ cs_utf_8, 		913,  982,  ent_uni_greek },
	{ cs_utf_8, 		8194, 8260, ent_uni_punct },
	{ cs_utf_8, 		8364, 8364, ent_uni_euro },