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uhtml: scan tags only, fix cat fallback, usage, cleanup

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cinap_lenrek 2012-02-20 20:48:48 +01:00
parent 6512bbc679
commit 0a9ae3758c
1 changed files with 29 additions and 15 deletions
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44
sys/src/cmd/uhtml.c
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@ -9,16 +9,23 @@ char *cset = nil;
void
usage(void)
{
fprint(2, "%s [ -h ] [ -c charset ] [ file ]\n", argv0);
fprint(2, "%s [ -p ] [ -c charset ] [ file ]\n", argv0);
exits("usage");
}
char*
strval(char *s)
attr(char *s, char *a)
{
char *e, q;
while(strchr("\t ", *s))
if((s = cistrstr(s, a)) == nil)
return nil;
s += strlen(a);
while(strchr("\r\n\t ", *s))
s++;
if(*s++ != '=')
return nil;
while(strchr("\r\n\t ", *s))
s++;
q = 0;
if(*s == '"' || *s == '\'')
@ -41,18 +48,18 @@ void
main(int argc, char *argv[])
{
int n, pfd[2], pflag = 0;
char *arg[4], *s, *p;
char *arg[4], *s, *e, *p, *g, t;
Rune r;
ARGBEGIN {
case 'h':
usage();
case 'c':
cset = EARGF(usage());
break;
case 'p':
pflag = 1;
break;
default:
usage();
} ARGEND;
if(*argv){
@ -62,6 +69,7 @@ main(int argc, char *argv[])
}
nbuf = 0;
p = buf;
g = buf;
while(nbuf < sizeof(buf)-1){
if((n = read(0, buf + nbuf, sizeof(buf)-1-nbuf)) <= 0)
break;
@ -84,16 +92,22 @@ main(int argc, char *argv[])
break;
}
}
if(s = cistrstr(p, "encoding="))
if(s = strval(s+9)){
cset = s;
break;
}
if(s = cistrstr(p, "charset="))
if(s = strval(s+8)){
cset = s;
s = g;
do {
if((s = strchr(s, '<')) == nil)
break;
g = s;
if((e = strchr(++s, '>')) == nil)
e = buf+nbuf;
t = *e;
*e = 0;
if((cset = attr(s, "encoding")) || (cset = attr(s, "charset"))){
*e = t;
break;
}
*e = t;
s = ++e;
} while(t);
}
nbuf -= p - buf;
@ -132,7 +146,7 @@ main(int argc, char *argv[])
arg[0] = "rc";
arg[1] = "-c";
arg[2] = smprint("{tcs -f %s | tcs -f html} || cat", cset);
arg[2] = smprint("{tcs -f %s || cat} | tcs -f html", cset);
arg[3] = nil;
exec("/bin/rc", arg);
}