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(parse): Simplify. No functional change.

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This commit is contained in:
Markus Armbruster 2007-11-17 16:48:01 +00:00
parent 0e506556c2
commit 5017bb5daa
1 changed files with 28 additions and 32 deletions
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60
src/lib/gen/parse.c
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@ -53,50 +53,46 @@
int
parse(char *buf, char **arg, char **condp, char *space, char **redir)
{
char *bp2;
char *bp1 = space;
int fs;
int quoted;
int argnum;
char *ap;
int i, quoted, argnum;
if (redir)
*redir = 0;
if (condp != NULL)
*redir = NULL;
if (condp)
*condp = NULL;
for (argnum = 0; *buf && argnum < 127;) {
while (isspace((unsigned char)*buf))
buf++;
for (argnum = 0; argnum < 127;) {
for (; isspace(*(unsigned char *)buf); buf++) ;
if (!*buf)
break;
/* recognize redirection syntax */
if (redir && (*buf == '>' || *buf == '|')) {
*redir = buf;
break;
}
/* copy argument */
quoted = 0;
for (bp2 = bp1; *buf;) {
if (!quoted && isspace((unsigned char)*buf)) {
buf++;
break;
}
if (*buf == '"') {
ap = space;
for (; *buf && (quoted || !isspace(*(unsigned char *)buf)); buf++) {
if (*buf == '"')
quoted = !quoted;
buf++;
} else {
if (*buf >= 0x20 && *buf <= 0x7e)
*bp1++ = *buf++;
else
buf++;
}
}
*bp1++ = 0;
if (*bp2 == '?' && condp != NULL) {
*condp = bp2 + 1;
} else {
arg[argnum] = bp2;
argnum++;
else if (*buf >= 0x20 && *buf <= 0x7e)
*space++ = *buf;
/* else funny character; ignore */
}
*space++ = 0;
/* store copied argument as conditional or regular argument */
if (condp && *ap == '?')
*condp = ap + 1;
else
arg[argnum++] = ap;
}
for (fs = argnum; fs < 128; fs++)
arg[fs] = NULL;
for (i = argnum; i < 128; i++)
arg[i] = NULL;
return argnum;
}