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rc: handle utf-8 in $ifs

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R=rsc
http://codereview.appspot.com/3798046
This commit is contained in:
Russ Cox 2011-01-02 13:43:20 -05:00
parent c4071243a5
commit 72f66c2d3c
1 changed files with 16 additions and 8 deletions
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24
src/cmd/rc/havefork.c
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@ -112,13 +112,14 @@ Xbackq(void)
{
struct thread *p = runq;
char wd[8193];
int c;
char *s, *ewd=&wd[8192], *stop;
int c, n;
char *s, *ewd=&wd[8192], *stop, *q;
struct io *f;
var *ifs = vlook("ifs");
word *v, *nextv;
int pfd[2];
int pid;
Rune r;
stop = ifs->val?ifs->val->word:"";
if(pipe(pfd)<0){
Xerror("can't make pipe");
@ -143,14 +144,21 @@ Xbackq(void)
s = wd;
v = 0;
while((c = rchr(f))!=EOF){
if(strchr(stop, c) || s==ewd){
if(s!=wd){
*s='\0';
v = newword(wd, v);
s = wd;
if(s != ewd) {
*s++ = c;
for(q=stop; *q; q+=n) {
n = chartorune(&r, q);
if(s-wd >= n && memcmp(s-n, q, n) == 0) {
s -= n;
goto stop;
}
}
continue;
}
else *s++=c;
stop:
*s = '\0';
v = newword(wd, v);
s = wd;
}
if(s!=wd){
*s='\0';