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SFLVersion 2.11
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SFL Version 2.11 |
#include "sflhttp.h" char decode_meta_charn (const char *input, size_t length)
Decodes a single meta-character (the piece from the character after the '&' up to but not including the ';'. If the meta- character is valid, returns the character; otherwise returns zero. Decodes both named and numeric meta-characters. Use the macro decode_meta_char if the input has a terminating zero.
{
#define META_COUNT 102
static char
*meta [META_COUNT]; /* Metacharacter translation tables */
static byte
code [META_COUNT];
static Bool
first_time = TRUE; /* First time flag */
int
char_index, /* Index into translation table */
min, /* Pointers for binary chop */
max,
cmp,
num;
/* Initialise translation table first time through */
if (first_time)
{
first_time = FALSE;
/* The meta-characters must be in alphabetical order so we can use */
/* a binary chop. */
#if (defined (__UNIX__) || defined (__WINDOWS__))
/* UNIX and Windows generally use ISO-8859-1 (Latin-1) */
code [ 0] = 0xC6; meta [ 0] = "AElig";
code [ 1] = 0xC1; meta [ 1] = "Aacute";
code [ 2] = 0xC2; meta [ 2] = "Acirc";
code [ 3] = 0xC0; meta [ 3] = "Agrave";
code [ 4] = 0xC5; meta [ 4] = "Aring";
code [ 5] = 0xC3; meta [ 5] = "Atilde";
code [ 6] = 0xC4; meta [ 6] = "Auml";
code [ 7] = 0xC7; meta [ 7] = "Ccedil";
code [ 8] = 0xD0; meta [ 8] = "ETH";
code [ 9] = 0xC9; meta [ 9] = "Eacute";
code [ 10] = 0xCA; meta [ 10] = "Ecirc";
code [ 11] = 0xC8; meta [ 11] = "Egrave";
code [ 12] = 0xCB; meta [ 12] = "Euml";
code [ 13] = 0xCD; meta [ 13] = "Iacute";
code [ 14] = 0xCE; meta [ 14] = "Icirc";
code [ 15] = 0xCC; meta [ 15] = "Igrave";
code [ 16] = 0xCF; meta [ 16] = "Iuml";
code [ 17] = 0xD1; meta [ 17] = "Ntilde";
code [ 18] = 0xD3; meta [ 18] = "Oacute";
code [ 19] = 0xD4; meta [ 19] = "Ocirc";
code [ 20] = 0xD2; meta [ 20] = "Ograve";
code [ 21] = 0xD8; meta [ 21] = "Oslash";
code [ 22] = 0xD5; meta [ 22] = "Otilde";
code [ 23] = 0xD6; meta [ 23] = "Ouml";
code [ 24] = 0xDE; meta [ 24] = "THORN";
code [ 25] = 0xDA; meta [ 25] = "Uacute";
code [ 26] = 0xDB; meta [ 26] = "Ucirc";
code [ 27] = 0xD9; meta [ 27] = "Ugrave";
code [ 28] = 0xDC; meta [ 28] = "Uuml";
code [ 29] = 0xDD; meta [ 29] = "Yacute";
code [ 30] = 0xE1; meta [ 30] = "aacute";
code [ 31] = 0xE2; meta [ 31] = "acirc";
code [ 32] = 0xB4; meta [ 32] = "acute";
code [ 33] = 0xE6; meta [ 33] = "aelig";
code [ 34] = 0xE0; meta [ 34] = "agrave";
code [ 35] = '&'; meta [ 35] = "amp";
code [ 36] = 0xE5; meta [ 36] = "aring";
code [ 37] = 0xE3; meta [ 37] = "atilde";
code [ 38] = 0xE4; meta [ 38] = "auml";
code [ 39] = 0xA6; meta [ 39] = "brvbar";
code [ 40] = 0xE7; meta [ 40] = "ccedil";
code [ 41] = 0xB8; meta [ 41] = "cedil";
code [ 42] = 0xA2; meta [ 42] = "cent";
code [ 43] = 0xA9; meta [ 43] = "copy";
code [ 44] = 0xA4; meta [ 44] = "curren";
code [ 45] = 0xB0; meta [ 45] = "deg";
code [ 46] = 0xF7; meta [ 46] = "divide";
code [ 47] = 0xE9; meta [ 47] = "eacute";
code [ 48] = 0xEA; meta [ 48] = "ecirc";
code [ 49] = 0xE8; meta [ 49] = "egrave";
code [ 50] = 0xF0; meta [ 50] = "eth";
code [ 51] = 0xEB; meta [ 51] = "euml";
code [ 52] = 0xBD; meta [ 52] = "frac12";
code [ 53] = 0xBC; meta [ 53] = "frac14";
code [ 54] = 0xBE; meta [ 54] = "frac34";
code [ 55] = '>'; meta [ 55] = "gt";
code [ 56] = 0xED; meta [ 56] = "iacute";
code [ 57] = 0xEE; meta [ 57] = "icirc";
code [ 58] = 0xA1; meta [ 58] = "iexcl";
code [ 59] = 0xEC; meta [ 59] = "igrave";
code [ 60] = 0xBF; meta [ 60] = "iquest";
code [ 61] = 0xEF; meta [ 61] = "iuml";
code [ 62] = 0xAB; meta [ 62] = "laquo";
code [ 63] = 0x91; meta [ 63] = "lsquo";
code [ 64] = '<'; meta [ 64] = "lt";
code [ 65] = 0xAF; meta [ 65] = "macr";
code [ 66] = 0xB5; meta [ 66] = "micro";
code [ 67] = 0xB7; meta [ 67] = "middot";
code [ 68] = ' '; meta [ 68] = "nbsp";
code [ 69] = 0xAC; meta [ 69] = "not";
code [ 70] = 0xF1; meta [ 70] = "ntilde";
code [ 71] = 0xF3; meta [ 71] = "oacute";
code [ 72] = 0xF4; meta [ 72] = "ocirc";
code [ 73] = 0xF2; meta [ 73] = "ograve";
code [ 74] = 0xAA; meta [ 74] = "ordf";
code [ 75] = 0xBA; meta [ 75] = "ordm";
code [ 76] = 0xF8; meta [ 76] = "oslash";
code [ 77] = 0xF5; meta [ 77] = "otilde";
code [ 78] = 0xF6; meta [ 78] = "ouml";
code [ 79] = 0xB6; meta [ 79] = "para";
code [ 80] = 0xB1; meta [ 80] = "plusmn";
code [ 81] = 0xA3; meta [ 81] = "pound";
code [ 82] = '"'; meta [ 82] = "quot";
code [ 83] = 0xBB; meta [ 83] = "raquo";
code [ 84] = 0xAE; meta [ 84] = "reg";
code [ 85] = 0x92; meta [ 85] = "rsquo";
code [ 86] = 0xA7; meta [ 86] = "sect";
code [ 87] = 0xAD; meta [ 87] = "shy";
code [ 88] = 0xB9; meta [ 88] = "sup1";
code [ 89] = 0xB2; meta [ 89] = "sup2";
code [ 90] = 0xB3; meta [ 90] = "sup3";
code [ 91] = 0xDF; meta [ 91] = "szlig";
code [ 92] = 0xFE; meta [ 92] = "thorn";
code [ 93] = 0xD7; meta [ 93] = "times";
code [ 94] = 0xFA; meta [ 94] = "uacute";
code [ 95] = 0xFB; meta [ 95] = "ucirc";
code [ 96] = 0xF9; meta [ 96] = "ugrave";
code [ 97] = 0xA8; meta [ 97] = "uml";
code [ 98] = 0xFC; meta [ 98] = "uuml";
code [ 99] = 0xFD; meta [ 99] = "yacute";
code [100] = 0xA5; meta [100] = "yen";
code [101] = 0xFF; meta [101] = "yuml";
#elif (defined (__MSDOS__))
code [ 0] = 0x92; meta [ 0] = "AElig";
code [ 1] = 0xB5; meta [ 1] = "Aacute";
code [ 2] = 0xB6; meta [ 2] = "Acirc";
code [ 3] = 0xB7; meta [ 3] = "Agrave";
code [ 4] = 0x8F; meta [ 4] = "Aring";
code [ 5] = 0xC7; meta [ 5] = "Atilde";
code [ 6] = 0x8E; meta [ 6] = "Auml";
code [ 7] = 0x80; meta [ 7] = "Ccedil";
code [ 8] = 0xD1; meta [ 8] = "ETH";
code [ 9] = 0x90; meta [ 9] = "Eacute";
code [ 10] = 0xD2; meta [ 10] = "Ecirc";
code [ 11] = 0xD4; meta [ 11] = "Egrave";
code [ 12] = 0xD3; meta [ 12] = "Euml";
code [ 13] = 0xD6; meta [ 13] = "Iacute";
code [ 14] = 0xD7; meta [ 14] = "Icirc";
code [ 15] = 0xDE; meta [ 15] = "Igrave";
code [ 16] = 0xD8; meta [ 16] = "Iuml";
code [ 17] = 0xA5; meta [ 17] = "Ntilde";
code [ 18] = 0xE0; meta [ 18] = "Oacute";
code [ 19] = 0xE2; meta [ 19] = "Ocirc";
code [ 20] = 0xE3; meta [ 20] = "Ograve";
code [ 21] = 0x9D; meta [ 21] = "Oslash";
code [ 22] = 0xE5; meta [ 22] = "Otilde";
code [ 23] = 0x99; meta [ 23] = "Ouml";
code [ 24] = 0xE6; meta [ 24] = "THORN";
code [ 25] = 0xE9; meta [ 25] = "Uacute";
code [ 26] = 0xEA; meta [ 26] = "Ucirc";
code [ 27] = 0xEB; meta [ 27] = "Ugrave";
code [ 28] = 0x9A; meta [ 28] = "Uuml";
code [ 29] = 0xED; meta [ 29] = "Yacute";
code [ 30] = 0xA0; meta [ 30] = "aacute";
code [ 31] = 0x83; meta [ 31] = "acirc";
code [ 32] = 0xEF; meta [ 32] = "acute";
code [ 33] = 0x91; meta [ 33] = "aelig";
code [ 34] = 0x85; meta [ 34] = "agrave";
code [ 35] = '&'; meta [ 35] = "amp";
code [ 36] = 0x86; meta [ 36] = "aring";
code [ 37] = 0xC6; meta [ 37] = "atilde";
code [ 38] = 0x84; meta [ 38] = "auml";
code [ 39] = 0xDD; meta [ 39] = "brvbar";
code [ 40] = 0x87; meta [ 40] = "ccedil";
code [ 41] = 0xB8; meta [ 41] = "cedil";
code [ 42] = 0xA2; meta [ 42] = "cent";
code [ 43] = 0xB8; meta [ 43] = "copy";
code [ 44] = 0xCF; meta [ 44] = "curren";
code [ 45] = 0xF8; meta [ 45] = "deg";
code [ 46] = 0xF6; meta [ 46] = "divide";
code [ 47] = 0x82; meta [ 47] = "eacute";
code [ 48] = 0x88; meta [ 48] = "ecirc";
code [ 49] = 0xCA; meta [ 49] = "egrave";
code [ 50] = 0xF0; meta [ 50] = "eth";
code [ 51] = 0x89; meta [ 51] = "euml";
code [ 52] = 0xAC; meta [ 52] = "frac12";
code [ 53] = 0xAB; meta [ 53] = "frac14";
code [ 54] = 0xF3; meta [ 54] = "frac34";
code [ 55] = '>'; meta [ 55] = "gt";
code [ 56] = 0xA1; meta [ 56] = "iacute";
code [ 57] = 0x8C; meta [ 57] = "icirc";
code [ 58] = 0xAD; meta [ 58] = "iexcl";
code [ 59] = 0x8D; meta [ 59] = "igrave";
code [ 60] = 0xA8; meta [ 60] = "iquest";
code [ 61] = 0x8B; meta [ 61] = "iuml";
code [ 62] = 0xAE; meta [ 62] = "laquo";
code [ 63] = 0x91; meta [ 63] = "lsquo";
code [ 64] = '<'; meta [ 64] = "lt";
code [ 65] = 0xEE; meta [ 65] = "macr";
code [ 66] = 0xB5; meta [ 66] = "micro";
code [ 67] = 0xFA; meta [ 67] = "middot";
code [ 68] = ' '; meta [ 68] = "nbsp";
code [ 69] = 0xAA; meta [ 69] = "not";
code [ 70] = 0xA4; meta [ 70] = "ntilde";
code [ 71] = 0xF3; meta [ 71] = "oacute";
code [ 72] = 0x93; meta [ 72] = "ocirc";
code [ 73] = 0x95; meta [ 73] = "ograve";
code [ 74] = 0xA6; meta [ 74] = "ordf";
code [ 75] = 0xA7; meta [ 75] = "ordm";
code [ 76] = 0x9B; meta [ 76] = "oslash";
code [ 77] = 0xA2; meta [ 77] = "otilde";
code [ 78] = 0x94; meta [ 78] = "ouml";
code [ 79] = 0xF4; meta [ 79] = "para";
code [ 80] = 0xF1; meta [ 80] = "plusmn";
code [ 81] = 0x9C; meta [ 81] = "pound";
code [ 82] = '"'; meta [ 82] = "quot";
code [ 83] = 0xAF; meta [ 83] = "raquo";
code [ 84] = 0xA9; meta [ 84] = "reg";
code [ 85] = 0x92; meta [ 85] = "rsquo";
code [ 86] = 0xF5; meta [ 86] = "sect";
code [ 87] = 0xB0; meta [ 87] = "shy";
code [ 88] = 0xFB; meta [ 88] = "sup1";
code [ 89] = 0xFD; meta [ 89] = "sup2";
code [ 90] = 0xFC; meta [ 90] = "sup3";
code [ 91] = 0xE1; meta [ 91] = "szlig";
code [ 92] = 0xFE; meta [ 92] = "thorn";
code [ 93] = 0x9E; meta [ 93] = "times";
code [ 94] = 0xA3; meta [ 94] = "uacute";
code [ 95] = 0x96; meta [ 95] = "ucirc";
code [ 96] = 0x97; meta [ 96] = "ugrave";
code [ 97] = 0xA8; meta [ 97] = "uml";
code [ 98] = 0x81; meta [ 98] = "uuml";
code [ 99] = 0xEC; meta [ 99] = "yacute";
code [100] = 0xA5; meta [100] = "yen";
code [101] = 0x98; meta [101] = "yuml";
#endif
}
if (*input == '#') /* Numeric translation */
{
input++;
num = 0;
if (*input == 'x') /* Hex */
{
input++;
num = decode_hex (&input, 0);
input++;
}
else
FOREVER
{
if ((*input >= '0') && (*input <= '9'))
num = (num * 10) + *input - '0';
else
break;
input++;
}
if (*input != ';')
num = 0;
return num;
}
else /* Lookup meta-character */
{
min = 0;
max = META_COUNT;
while (max > min)
{
char_index = (max + min) / 2;
cmp = strncmp (input, meta [char_index], length);
if (cmp == 0)
return code [char_index];
if (cmp > 0)
min = char_index + 1;
else
max = char_index;
}
return 0;
}
}
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