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awk: fix -F 'regex' bug (miscounted fields if last field is empty)

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This commit is contained in:
Denis Vlasenko 2007-07-18 18:32:25 +00:00
parent b78c782c85
commit af1bd09625
1 changed files with 25 additions and 17 deletions
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24
editors/awk.c
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@ -1523,8 +1523,11 @@ static int awk_split(const char *s, node *spl, char **slist)
c[2] = '\n';
if ((spl->info & OPCLSMASK) == OC_REGEXP) { /* regex split */
while (*s) {
l = strcspn(s, c+2);
if (!*s)
return n; /* "": zero fields */
n++; /* at least one field will be there */
do {
l = strcspn(s, c+2); /* len till next NUL or \n */
if (regexec(icase ? spl->r.ire : spl->l.re, s, 1, pmatch, 0) == 0
&& pmatch[0].rm_so <= l
) {
@ -1533,24 +1536,27 @@ static int awk_split(const char *s, node *spl, char **slist)
l++;
pmatch[0].rm_eo++;
}
n++; /* we saw yet another delimiter */
} else {
pmatch[0].rm_eo = l;
if (s[l]) pmatch[0].rm_eo++;
}
memcpy(s1, s, l);
s1[l] = '\0';
nextword(&s1);
s += pmatch[0].rm_eo;
n++;
} while (*s);
return n;
}
} else if (c[0] == '\0') { /* null split */
if (c[0] == '\0') { /* null split */
while (*s) {
*s1++ = *s++;
*s1++ = '\0';
n++;
}
} else if (c[0] != ' ') { /* single-character split */
return n;
}
if (c[0] != ' ') { /* single-character split */
if (icase) {
c[0] = toupper(c[0]);
c[1] = tolower(c[1]);
@ -1560,7 +1566,9 @@ static int awk_split(const char *s, node *spl, char **slist)
*s1++ = '\0';
n++;
}
} else { /* space split */
return n;
}
/* space split */
while (*s) {
s = skip_whitespace(s);
if (!*s) break;
@ -1569,12 +1577,12 @@ static int awk_split(const char *s, node *spl, char **slist)
*s1++ = *s++;
*s1++ = '\0';
}
}
return n;
}
static void split_f0(void)
{
/* static char *fstrings; */
#define fstrings (G.split_f0__fstrings)
int i, n;