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exclude: split pathname matching code into a separate function 

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Nguyễn Thái Ngọc Duy 2012-10-15 13:24:37 +07:00 committed by Junio C Hamano
parent a3ea4d7199
commit b559263216
1 changed files with 53 additions and 32 deletions
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85
dir.c
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@ -522,6 +522,53 @@ static int match_basename(const char *basename, int basenamelen,
return 0;
}
static int match_pathname(const char *pathname, int pathlen,
const char *base, int baselen,
const char *pattern, int prefix, int patternlen,
int flags)
{
const char *name;
int namelen;
/*
* match with FNM_PATHNAME; the pattern has base implicitly
* in front of it.
*/
if (*pattern == '/') {
pattern++;
prefix--;
}
/*
* baselen does not count the trailing slash. base[] may or
* may not end with a trailing slash though.
*/
if (pathlen < baselen + 1 ||
(baselen && pathname[baselen] != '/') ||
strncmp_icase(pathname, base, baselen))
return 0;
namelen = baselen ? pathlen - baselen - 1 : pathlen;
name = pathname + pathlen - namelen;
if (prefix) {
/*
* if the non-wildcard part is longer than the
* remaining pathname, surely it cannot match.
*/
if (prefix > namelen)
return 0;
if (strncmp_icase(pattern, name, prefix))
return 0;
pattern += prefix;
name += prefix;
namelen -= prefix;
}
return fnmatch_icase(pattern, name, FNM_PATHNAME) == 0;
}
/* Scan the list and let the last match determine the fate.
* Return 1 for exclude, 0 for include and -1 for undecided.
*/
@ -536,9 +583,9 @@ int excluded_from_list(const char *pathname,
for (i = el->nr - 1; 0 <= i; i--) {
struct exclude *x = el->excludes[i];
const char *name, *exclude = x->pattern;
const char *exclude = x->pattern;
int to_exclude = x->to_exclude;
int namelen, prefix = x->nowildcardlen;
int prefix = x->nowildcardlen;
if (x->flags & EXC_FLAG_MUSTBEDIR) {
if (*dtype == DT_UNKNOWN)
@ -556,36 +603,10 @@ int excluded_from_list(const char *pathname,
continue;
}
/* match with FNM_PATHNAME:
* exclude has base (baselen long) implicitly in front of it.
*/
if (*exclude == '/') {
exclude++;
prefix--;
}
if (pathlen < x->baselen ||
(x->baselen && pathname[x->baselen-1] != '/') ||
strncmp_icase(pathname, x->base, x->baselen))
continue;
namelen = x->baselen ? pathlen - x->baselen : pathlen;
name = pathname + pathlen - namelen;
/* if the non-wildcard part is longer than the
remaining pathname, surely it cannot match */
if (prefix > namelen)
continue;
if (prefix) {
if (strncmp_icase(exclude, name, prefix))
continue;
exclude += prefix;
name += prefix;
namelen -= prefix;
}
if (!fnmatch_icase(exclude, name, FNM_PATHNAME))
assert(x->baselen == 0 || x->base[x->baselen - 1] == '/');
if (match_pathname(pathname, pathlen,
x->base, x->baselen ? x->baselen - 1 : 0,
exclude, prefix, x->patternlen, x->flags))
return to_exclude;
}
return -1; /* undecided */