[PATCH v5 07/12] wildmatch: make wildmatch's return value compatible with fnmatch

[Nguyễn Thái Ngọc Duy <pclouds@xxxxxxxxx>]

wildmatch returns non-zero if matched, zero otherwise. This patch
makes it return zero if matches, non-zero otherwise, like fnmatch().

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@xxxxxxxxx>
---
 test-wildmatch.c |  4 ++--
 wildmatch.c      | 21 ++++++++++++---------
 2 files changed, 14 insertions(+), 11 deletions(-)

diff --git a/test-wildmatch.c b/test-wildmatch.c
index ac56420..77014e9 100644
--- a/test-wildmatch.c
+++ b/test-wildmatch.c
@@ -4,9 +4,9 @@
 int main(int argc, char **argv)
 {
 	if (!strcmp(argv[1], "wildmatch"))
-		return wildmatch(argv[3], argv[2]) ? 0 : 1;
+		return !!wildmatch(argv[3], argv[2]);
 	else if (!strcmp(argv[1], "iwildmatch"))
-		return iwildmatch(argv[3], argv[2]) ? 0 : 1;
+		return !!iwildmatch(argv[3], argv[2]);
 	else if (!strcmp(argv[1], "fnmatch"))
 		return !!fnmatch(argv[3], argv[2], FNM_PATHNAME);
 	else
diff --git a/wildmatch.c b/wildmatch.c
index d0b906a..e3ac6cc 100644
--- a/wildmatch.c
+++ b/wildmatch.c
@@ -20,6 +20,9 @@ typedef unsigned char uchar;
 
 #define FALSE 0
 #define TRUE 1
+
+#define NOMATCH 1
+#define MATCH 0
 #define ABORT_ALL -1
 #define ABORT_TO_STARSTAR -2
 
@@ -78,12 +81,12 @@ static int dowild(const uchar *p, const uchar *text)
 	    /* FALLTHROUGH */
 	  default:
 	    if (t_ch != p_ch)
-		return FALSE;
+		return NOMATCH;
 	    continue;
 	  case '?':
 	    /* Match anything but '/'. */
 	    if (t_ch == '/')
-		return FALSE;
+		return NOMATCH;
 	    continue;
 	  case '*':
 	    if (*++p == '*') {
@@ -96,14 +99,14 @@ static int dowild(const uchar *p, const uchar *text)
 		 * only if there are no more slash characters. */
 		if (!special) {
 			if (strchr((char*)text, '/') != NULL)
-			    return FALSE;
+			    return NOMATCH;
 		}
-		return TRUE;
+		return MATCH;
 	    }
 	    while (1) {
 		if (t_ch == '\0')
 		    break;
-		if ((matched = dowild(p, text)) != FALSE) {
+		if ((matched = dowild(p, text)) != NOMATCH) {
 		    if (!special || matched != ABORT_TO_STARSTAR)
 			return matched;
 		} else if (!special && t_ch == '/')
@@ -202,18 +205,18 @@ static int dowild(const uchar *p, const uchar *text)
 		    matched = TRUE;
 	    } while (prev_ch = p_ch, (p_ch = *++p) != ']');
 	    if (matched == special || t_ch == '/')
-		return FALSE;
+		return NOMATCH;
 	    continue;
 	}
     }
 
-    return *text ? FALSE : TRUE;
+    return *text ? NOMATCH : MATCH;
 }
 
 /* Match the "pattern" against the "text" string. */
 int wildmatch(const char *pattern, const char *text)
 {
-    return dowild((const uchar*)pattern, (const uchar*)text) == TRUE;
+    return dowild((const uchar*)pattern, (const uchar*)text);
 }
 
 /* Match the "pattern" against the forced-to-lower-case "text" string. */
@@ -221,7 +224,7 @@ int iwildmatch(const char *pattern, const char *text)
 {
     int ret;
     force_lower_case = 1;
-    ret = dowild((const uchar*)pattern, (const uchar*)text) == TRUE;
+    ret = dowild((const uchar*)pattern, (const uchar*)text);
     force_lower_case = 0;
     return ret;
 }
-- 
1.8.0.rc2.11.g2b79d01

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