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release-2.0rc1
mxml/mxml-entity.c
Michael R Sweet 46085f9327 Index and entity callback support.
2004-05-16 05:25:38 +00:00

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/*
* "$Id: mxml-entity.c,v 1.4 2004/05/16 05:25:38 mike Exp $"
*
* Character entity support code for Mini-XML, a small XML-like
* file parsing library.
*
* Copyright 2003-2004 by Michael Sweet.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* Contents:
*
* mxmlEntityAddCallback() - Add a callback to convert entities to
* Unicode.
* mxmlEntityGetName() - Get the name that corresponds to the
* character value.
* mxmlEntityGetValue() - Get the character corresponding to a named
* entity.
* mxmlEntityRemoveCallback() - Remove a callback.
* default_callback() - Lookup standard (X)HTML entities.
*/
/*
* Include necessary headers...
*/
#include "config.h"
#include "mxml.h"
/*
* Local functions...
*/
static int default_callback(const char *name);
/*
* Callback array...
*/
static int num_callbacks = 1;
static int (*callbacks[100])(const char *name) =
{
default_callback
};
/*
* 'mxmlEntityAddCallback()' - Add a callback to convert entities to Unicode.
*/
void
mxmlEntityAddCallback(int (*cb)(const char *name))
/* I - Callback function to add */
{
if (num_callbacks < (int)(sizeof(callbacks) / sizeof(callbacks[0])))
{
callbacks[num_callbacks] = cb;
num_callbacks ++;
}
}
/*
* 'mxmlEntityGetName()' - Get the name that corresponds to the character value.
*
* If val does not need to be represented by a named entity, NULL is returned.
*/
const char * /* O - Entity name or NULL */
mxmlEntityGetName(int val) /* I - Character value */
{
switch (val)
{
case '&' :
return ("amp");
case '<' :
return ("lt");
case '>' :
return ("gt");
case '\"' :
return ("quot");
default :
return (NULL);
}
}
/*
* 'mxmlEntityGetValue()' - Get the character corresponding to a named entity.
*
* The entity name can also be a numeric constant. -1 is returned if the
* name is not known.
*/
int /* O - Character value or -1 on error */
mxmlEntityGetValue(const char *name) /* I - Entity name */
{
int i; /* Looping var */
int ch; /* Character value */
for (i = 0; i < num_callbacks; i ++)
if ((ch = (callbacks[i])(name)) >= 0)
return (ch);
return (-1);
}
/*
* 'mxmlEntityRemoveCallback()' - Remove a callback.
*/
void
mxmlEntityRemoveCallback(int (*cb)(const char *name))
/* I - Callback function to remove */
{
int i; /* Looping var */
for (i = 0; i < num_callbacks; i ++)
if (cb == callbacks[i])
{
/*
* Remove the callback...
*/
num_callbacks --;
if (i < num_callbacks)
memmove(callbacks + i, callbacks + i + 1,
(num_callbacks - i) * sizeof(callbacks[0]));
return;
}
}
/*
* 'default_callback()' - Lookup standard (X)HTML entities.
*/
static int /* O - Unicode value or -1 */
default_callback(const char *name) /* I - Entity name */
{
int diff, /* Difference between names */
current, /* Current entity in search */
first, /* First entity in search */
last; /* Last entity in search */
static const struct
{
const char *name; /* Entity name */
int val; /* Character value */
} entities[] =
{
{ "AElig", 198 },
{ "Aacute", 193 },
{ "Acirc", 194 },
{ "Agrave", 192 },
{ "Alpha", 913 },
{ "Aring", 197 },
{ "Atilde", 195 },
{ "Auml", 196 },
{ "Beta", 914 },
{ "Ccedil", 199 },
{ "Chi", 935 },
{ "Dagger", 8225 },
{ "Delta", 916 },
{ "Dstrok", 208 },
{ "ETH", 208 },
{ "Eacute", 201 },
{ "Ecirc", 202 },
{ "Egrave", 200 },
{ "Epsilon", 917 },
{ "Eta", 919 },
{ "Euml", 203 },
{ "Gamma", 915 },
{ "Iacute", 205 },
{ "Icirc", 206 },
{ "Igrave", 204 },
{ "Iota", 921 },
{ "Iuml", 207 },
{ "Kappa", 922 },
{ "Lambda", 923 },
{ "Mu", 924 },
{ "Ntilde", 209 },
{ "Nu", 925 },
{ "OElig", 338 },
{ "Oacute", 211 },
{ "Ocirc", 212 },
{ "Ograve", 210 },
{ "Omega", 937 },
{ "Omicron", 927 },
{ "Oslash", 216 },
{ "Otilde", 213 },
{ "Ouml", 214 },
{ "Phi", 934 },
{ "Pi", 928 },
{ "Prime", 8243 },
{ "Psi", 936 },
{ "Rho", 929 },
{ "Scaron", 352 },
{ "Sigma", 931 },
{ "THORN", 222 },
{ "Tau", 932 },
{ "Theta", 920 },
{ "Uacute", 218 },
{ "Ucirc", 219 },
{ "Ugrave", 217 },
{ "Upsilon", 933 },
{ "Uuml", 220 },
{ "Xi", 926 },
{ "Yacute", 221 },
{ "Yuml", 376 },
{ "Zeta", 918 },
{ "aacute", 225 },
{ "acirc", 226 },
{ "acute", 180 },
{ "aelig", 230 },
{ "agrave", 224 },
{ "alefsym", 8501 },
{ "alpha", 945 },
{ "amp", '&' },
{ "and", 8743 },
{ "ang", 8736 },
{ "aring", 229 },
{ "asymp", 8776 },
{ "atilde", 227 },
{ "auml", 228 },
{ "bdquo", 8222 },
{ "beta", 946 },
{ "brkbar", 166 },
{ "brvbar", 166 },
{ "bull", 8226 },
{ "cap", 8745 },
{ "ccedil", 231 },
{ "cedil", 184 },
{ "cent", 162 },
{ "chi", 967 },
{ "circ", 710 },
{ "clubs", 9827 },
{ "cong", 8773 },
{ "copy", 169 },
{ "crarr", 8629 },
{ "cup", 8746 },
{ "curren", 164 },
{ "dArr", 8659 },
{ "dagger", 8224 },
{ "darr", 8595 },
{ "deg", 176 },
{ "delta", 948 },
{ "diams", 9830 },
{ "die", 168 },
{ "divide", 247 },
{ "eacute", 233 },
{ "ecirc", 234 },
{ "egrave", 232 },
{ "empty", 8709 },
{ "emsp", 8195 },
{ "ensp", 8194 },
{ "epsilon", 949 },
{ "equiv", 8801 },
{ "eta", 951 },
{ "eth", 240 },
{ "euml", 235 },
{ "euro", 8364 },
{ "exist", 8707 },
{ "fnof", 402 },
{ "forall", 8704 },
{ "frac12", 189 },
{ "frac14", 188 },
{ "frac34", 190 },
{ "frasl", 8260 },
{ "gamma", 947 },
{ "ge", 8805 },
{ "gt", '>' },
{ "hArr", 8660 },
{ "harr", 8596 },
{ "hearts", 9829 },
{ "hellip", 8230 },
{ "hibar", 175 },
{ "iacute", 237 },
{ "icirc", 238 },
{ "iexcl", 161 },
{ "igrave", 236 },
{ "image", 8465 },
{ "infin", 8734 },
{ "int", 8747 },
{ "iota", 953 },
{ "iquest", 191 },
{ "isin", 8712 },
{ "iuml", 239 },
{ "kappa", 954 },
{ "lArr", 8656 },
{ "lambda", 955 },
{ "lang", 9001 },
{ "laquo", 171 },
{ "larr", 8592 },
{ "lceil", 8968 },
{ "ldquo", 8220 },
{ "le", 8804 },
{ "lfloor", 8970 },
{ "lowast", 8727 },
{ "loz", 9674 },
{ "lrm", 8206 },
{ "lsaquo", 8249 },
{ "lsquo", 8216 },
{ "lt", '<' },
{ "macr", 175 },
{ "mdash", 8212 },
{ "micro", 181 },
{ "middot", 183 },
{ "minus", 8722 },
{ "mu", 956 },
{ "nabla", 8711 },
{ "nbsp", 160 },
{ "ndash", 8211 },
{ "ne", 8800 },
{ "ni", 8715 },
{ "not", 172 },
{ "notin", 8713 },
{ "nsub", 8836 },
{ "ntilde", 241 },
{ "nu", 957 },
{ "oacute", 243 },
{ "ocirc", 244 },
{ "oelig", 339 },
{ "ograve", 242 },
{ "oline", 8254 },
{ "omega", 969 },
{ "omicron", 959 },
{ "oplus", 8853 },
{ "or", 8744 },
{ "ordf", 170 },
{ "ordm", 186 },
{ "oslash", 248 },
{ "otilde", 245 },
{ "otimes", 8855 },
{ "ouml", 246 },
{ "para", 182 },
{ "part", 8706 },
{ "permil", 8240 },
{ "perp", 8869 },
{ "phi", 966 },
{ "pi", 960 },
{ "piv", 982 },
{ "plusmn", 177 },
{ "pound", 163 },
{ "prime", 8242 },
{ "prod", 8719 },
{ "prop", 8733 },
{ "psi", 968 },
{ "quot", '\"' },
{ "rArr", 8658 },
{ "radic", 8730 },
{ "rang", 9002 },
{ "raquo", 187 },
{ "rarr", 8594 },
{ "rceil", 8969 },
{ "rdquo", 8221 },
{ "real", 8476 },
{ "reg", 174 },
{ "rfloor", 8971 },
{ "rho", 961 },
{ "rlm", 8207 },
{ "rsaquo", 8250 },
{ "rsquo", 8217 },
{ "sbquo", 8218 },
{ "scaron", 353 },
{ "sdot", 8901 },
{ "sect", 167 },
{ "shy", 173 },
{ "sigma", 963 },
{ "sigmaf", 962 },
{ "sim", 8764 },
{ "spades", 9824 },
{ "sub", 8834 },
{ "sube", 8838 },
{ "sum", 8721 },
{ "sup", 8835 },
{ "sup1", 185 },
{ "sup2", 178 },
{ "sup3", 179 },
{ "supe", 8839 },
{ "szlig", 223 },
{ "tau", 964 },
{ "there4", 8756 },
{ "theta", 952 },
{ "thetasym", 977 },
{ "thinsp", 8201 },
{ "thorn", 254 },
{ "tilde", 732 },
{ "times", 215 },
{ "trade", 8482 },
{ "uArr", 8657 },
{ "uacute", 250 },
{ "uarr", 8593 },
{ "ucirc", 251 },
{ "ugrave", 249 },
{ "uml", 168 },
{ "upsih", 978 },
{ "upsilon", 965 },
{ "uuml", 252 },
{ "weierp", 8472 },
{ "xi", 958 },
{ "yacute", 253 },
{ "yen", 165 },
{ "yuml", 255 },
{ "zeta", 950 },
{ "zwj", 8205 },
{ "zwnj", 8204 }
};
first = 0;
last = (int)(sizeof(entities) / sizeof(entities[0]) - 1);
while (last > first)
{
current = (first + last) / 2;
if ((diff = strcmp(name, entities[current].name)) == 0)
return (entities[current].val);
else if (diff < 0)
last = current;
else
first = current;
}
current = (first + last) / 2;
if (!strcmp(name, entities[current].name))
return (entities[current].val);
else
return (-1);
}
/*
* End of "$Id: mxml-entity.c,v 1.4 2004/05/16 05:25:38 mike Exp $".
*/
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