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/*
* Copyright (c) 2002-2004, Jon Travis
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
* ekhtml_mktables: A small utility for generating tables of valid characters
* for different parts of the HTML parsing, such as tags,
* whitespace, etc.
*
* Each table is described by a function which returns 1
* if the character should be in the table, else 0
*/
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include "ekhtml_config.h"
#include "ekhtml.h"
#define EKHTML_USE_PRIVATE
#include "ekhtml_private.h"
/* valid_tagname: Character map for a tagname AFTER the first letter */
static EKHTML_CHARMAP_TYPE valid_tagname(char in){
if(in == '-' || in == '.' || isdigit(in) || isalpha(in))
return 1;
return 0;
}
static EKHTML_CHARMAP_TYPE valid_whitespace(char in){
return isspace(in) ? 1 : 0;
}
/* attribute name AFTER the first character */
static EKHTML_CHARMAP_TYPE valid_attrname(char in){
if(in == '_' || valid_tagname(in))
return 1;
return 0;
}
/* attribute value */
static EKHTML_CHARMAP_TYPE valid_attrvalue(char in){
if(valid_attrname(in) ||
in == '/' || in == ':' || in == '+' || in == '*' ||
in == '%' || in == '?' || in == '!' || in == '&' ||
in == '(' || in == ')' || in == '#' || in == '=' ||
in == '~' || in == ']' || in == '*' || in == '@' ||
in == '$' || in == '_' || in == ',' || in == ';' ||
in == '|')
return 1;
return 0;
}
static EKHTML_CHARMAP_TYPE valid_begattrname(char in){
return (isalpha(in) || in == '_') ? 1 : 0;
}
static EKHTML_CHARMAP_TYPE ekhtml_state(char in){
if(in == '/')
return EKHTML_STATE_ENDTAG;
if(isalpha(in))
return EKHTML_STATE_STARTTAG;
if(in == '!')
return EKHTML_STATE_NONE; /* Must be determined by caller */
return EKHTML_STATE_BADDATA;
}
static EKHTML_CHARMAP_TYPE charmap_values(char in){
EKHTML_CHARMAP_TYPE res = 0;
if(valid_tagname(in))
res |= EKHTML_CHAR_TAGNAME;
if(valid_whitespace(in))
res |= EKHTML_CHAR_WHITESPACE;
if(valid_begattrname(in))
res |= EKHTML_CHAR_BEGATTRNAME;
if(valid_attrname(in))
res |= EKHTML_CHAR_ATTRNAME;
if(valid_attrvalue(in))
res |= EKHTML_CHAR_ATTRVALUE;
return res;
}
#define EKHTML_STRINGIFY(x) #x
static void print_charmap(char *name, EKHTML_CHARMAP_TYPE (*cmap_func)(char)){
int ch;
char sbuf[256];
sprintf(sbuf, "0x%%0%dx ", (int)EKHTML_CHARMAP_LEN * 2);
printf("#ifdef EKHTML_USE_TABLES\n");
printf("const %s %s[256] = {\n", EKHTML_CHARMAP_TYPE_S, name);
for(ch=0; ch < 256; ch++){
printf(sbuf, cmap_func((char)ch));
if(isgraph(ch))
printf("/* '%c' */", ch);
else
printf("/* 0x%.2x */", ch);
printf(", ");
if(!((ch + 1) % 4))
printf("\n");
}
printf("};\n\n");
printf("#else\n");
printf("extern const %s %s[256];\n", EKHTML_CHARMAP_TYPE_S, name);
printf("#endif\n");
}
int main(int argc, char *argv[]){
printf("#ifndef EKHTML_MKTABLES_DOT_H\n");
printf("#define EKHTML_MKTABLES_DOT_H\n");
print_charmap("EKCMap_CharMap", charmap_values);
print_charmap("EKCMap_EKState", ekhtml_state);
printf("\n#endif\n");
return 0;
}
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