evil-qemacs/libqhtml/csstoqe.c
Charlie Gordon e2e290ec72 Improve libqhtml build
- add dependencies
- support expression syntax in csstoqe
2021-02-03 09:03:51 +01:00

146 lines
3.9 KiB
C

/*
* Convert a CSS style sheet to C buffer so that it can be statically
* linked with qemacs
*
* Copyright (c) 2002 Fabrice Bellard.
* Copyright (c) 2007-2017 Charlie Gordon.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <ctype.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
static int peekc(FILE *f)
{
int c = getc(f);
if (c != EOF)
ungetc(c, f);
return c;
}
static int compat_char(int c1, int c2)
{
if ((isalnum(c1) || c1 == '_' || c1 == '$')
&& (isalnum(c2) || c2 == '_' || c2 == '$'))
return 0;
if ((c1 == c2 && strchr("+-<>&|=", c1))
|| (c2 == '=' && strchr("<>!+-*/&|^%", c1))
|| (c1 == '-' && c2 == '>')
|| (c1 == '/' && c2 == '/')
|| (c1 == '/' && c2 == '*')
|| (c1 == '*' && c2 == '/')
|| (c1 == '<' && c2 == '/')
|| (c1 == '.' && isdigit(c2))
|| (isdigit(c1) && c2 == '.'))
return 0;
return 1;
}
int main(int argc, char **argv)
{
int c, n, last_c, got_space, in_string;
if (argc < 2) {
fprintf(stderr, "usage: csstoqe array_name\n");
exit(1);
}
printf("/* Automatically generated file - do not edit */\n"
"\n"
"#include \"qe.h\"\n"
"#include \"css.h\"\n"
"\n");
printf("const char %s[] = {\n", argv[1]);
n = 0;
got_space = 0;
last_c = 0;
in_string = 0;
for (;;) {
c = getchar();
if (c == EOF)
break;
if (!in_string) {
if (c == ' ' || c == '\t' || c == '\n') {
got_space = 1;
continue;
}
/* comments */
if (c == '/' && peekc(stdin) == '/') {
/* C++ like comment */
for (;;) {
c = getchar();
if (c == EOF)
goto the_end;
if (c == '\n')
goto end_comment;
}
}
if (c == '/' && peekc(stdin) == '*') {
/* C like comment */
getchar();
for (;;) {
c = getchar();
if (c == EOF)
goto the_end;
while (c == '*') {
c = getchar();
if (c == EOF)
goto the_end;
if (c == '/')
goto end_comment;
}
}
end_comment:
got_space = 1;
continue;
}
}
if (n == 0) {
printf(" \"");
}
/* add separator if needed */
if (!in_string && got_space) {
if (!compat_char(last_c, c)) {
putchar(' ');
n++;
}
}
if (c == '\"' || c == '\'' || c == '\\') {
putchar('\\');
n++;
}
putchar(c);
if (c == '\"' || c == '\'') {
if (in_string == c || in_string == 0)
in_string ^= c;
}
last_c = c;
got_space = 0;
if (++n >= 64) {
printf("\"\n");
n = 0;
}
}
the_end:
if (n > 0)
printf("\"\n");
printf("};\n\n");
return 0;
}