wildmatch: rename constants and update prototype

- All exported constants now have a prefix WM_
- Do not rely on FNM_* constants, use the WM_ counterparts
- Remove TRUE and FALSE to follow Git's coding style
- While at it, turn flags type from int to unsigned int
- Add an (unused yet) argument to carry extra information
  so that we don't have to change the prototype again later
  when we need to pass other stuff to wildmatch

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

4 files changed, 62 insertions, 55 deletions

diff --git a/dir.c b/dir.c
index cb7328b548..175a1827ba 100644
--- a/dir.c
+++ b/dir.c
@@ -595,7 +595,8 @@ int match_pathname(const char *pathname, int pathlen,
 	}
 
 	return wildmatch(pattern, name,
-			 ignore_case ? FNM_CASEFOLD : 0) == 0;
+			 ignore_case ? WM_CASEFOLD : 0,
+			 NULL) == 0;
 }
 
 /* Scan the list and let the last match determine the fate.
diff --git a/test-wildmatch.c b/test-wildmatch.c
index e384c8edb1..4bb23b4c92 100644
--- a/test-wildmatch.c
+++ b/test-wildmatch.c
@@ -12,9 +12,9 @@ int main(int argc, char **argv)
 			argv[i] += 3;
 	}
 	if (!strcmp(argv[1], "wildmatch"))
-		return !!wildmatch(argv[3], argv[2], 0);
+		return !!wildmatch(argv[3], argv[2], 0, NULL);
 	else if (!strcmp(argv[1], "iwildmatch"))
-		return !!wildmatch(argv[3], argv[2], FNM_CASEFOLD);
+		return !!wildmatch(argv[3], argv[2], WM_CASEFOLD, NULL);
 	else if (!strcmp(argv[1], "fnmatch"))
 		return !!fnmatch(argv[3], argv[2], FNM_PATHNAME);
 	else
diff --git a/wildmatch.c b/wildmatch.c
index 2d3ed84364..2a655fa7d4 100644
--- a/wildmatch.c
+++ b/wildmatch.c
@@ -18,9 +18,6 @@ typedef unsigned char uchar;
 #define NEGATE_CLASS	'!'
 #define NEGATE_CLASS2	'^'
 
-#define FALSE 0
-#define TRUE 1
-
 #define CC_EQ(class, len, litmatch) ((len) == sizeof (litmatch)-1 \
 				    && *(class) == *(litmatch) \
 				    && strncmp((char*)class, litmatch, len) == 0)
@@ -64,7 +61,7 @@ static int dowild(const uchar *p, const uchar *text, int force_lower_case)
 		int matched, match_slash, negated;
 		uchar t_ch, prev_ch;
 		if ((t_ch = *text) == '\0' && p_ch != '*')
-			return ABORT_ALL;
+			return WM_ABORT_ALL;
 		if (force_lower_case && ISUPPER(t_ch))
 			t_ch = tolower(t_ch);
 		if (force_lower_case && ISUPPER(p_ch))
@@ -77,12 +74,12 @@ static int dowild(const uchar *p, const uchar *text, int force_lower_case)
 			/* FALLTHROUGH */
 		default:
 			if (t_ch != p_ch)
-				return NOMATCH;
+				return WM_NOMATCH;
 			continue;
 		case '?':
 			/* Match anything but '/'. */
 			if (t_ch == '/')
-				return NOMATCH;
+				return WM_NOMATCH;
 			continue;
 		case '*':
 			if (*++p == '*') {
@@ -101,135 +98,136 @@ static int dowild(const uchar *p, const uchar *text, int force_lower_case)
 					 * both foo/bar and foo/a/bar.
 					 */
 					if (p[0] == '/' &&
-					    dowild(p + 1, text, force_lower_case) == MATCH)
-						return MATCH;
-					match_slash = TRUE;
+					    dowild(p + 1, text, force_lower_case) == WM_MATCH)
+						return WM_MATCH;
+					match_slash = 1;
 				} else
-					return ABORT_MALFORMED;
+					return WM_ABORT_MALFORMED;
 			} else
-				match_slash = FALSE;
+				match_slash = 0;
 			if (*p == '\0') {
 				/* Trailing "**" matches everything.  Trailing "*" matches
 				 * only if there are no more slash characters. */
 				if (!match_slash) {
 					if (strchr((char*)text, '/') != NULL)
-						return NOMATCH;
+						return WM_NOMATCH;
 				}
-				return MATCH;
+				return WM_MATCH;
 			}
 			while (1) {
 				if (t_ch == '\0')
 					break;
-				if ((matched = dowild(p, text,  force_lower_case)) != NOMATCH) {
-					if (!match_slash || matched != ABORT_TO_STARSTAR)
+				if ((matched = dowild(p, text,  force_lower_case)) != WM_NOMATCH) {
+					if (!match_slash || matched != WM_ABORT_TO_STARSTAR)
 						return matched;
 				} else if (!match_slash && t_ch == '/')
-					return ABORT_TO_STARSTAR;
+					return WM_ABORT_TO_STARSTAR;
 				t_ch = *++text;
 			}
-			return ABORT_ALL;
+			return WM_ABORT_ALL;
 		case '[':
 			p_ch = *++p;
 #ifdef NEGATE_CLASS2
 			if (p_ch == NEGATE_CLASS2)
 				p_ch = NEGATE_CLASS;
 #endif
-			/* Assign literal TRUE/FALSE because of "matched" comparison. */
-			negated = p_ch == NEGATE_CLASS? TRUE : FALSE;
+			/* Assign literal 1/0 because of "matched" comparison. */
+			negated = p_ch == NEGATE_CLASS ? 1 : 0;
 			if (negated) {
 				/* Inverted character class. */
 				p_ch = *++p;
 			}
 			prev_ch = 0;
-			matched = FALSE;
+			matched = 0;
 			do {
 				if (!p_ch)
-					return ABORT_ALL;
+					return WM_ABORT_ALL;
 				if (p_ch == '\\') {
 					p_ch = *++p;
 					if (!p_ch)
-						return ABORT_ALL;
+						return WM_ABORT_ALL;
 					if (t_ch == p_ch)
-						matched = TRUE;
+						matched = 1;
 				} else if (p_ch == '-' && prev_ch && p[1] && p[1] != ']') {
 					p_ch = *++p;
 					if (p_ch == '\\') {
 						p_ch = *++p;
 						if (!p_ch)
-							return ABORT_ALL;
+							return WM_ABORT_ALL;
 					}
 					if (t_ch <= p_ch && t_ch >= prev_ch)
-						matched = TRUE;
+						matched = 1;
 					p_ch = 0; /* This makes "prev_ch" get set to 0. */
 				} else if (p_ch == '[' && p[1] == ':') {
 					const uchar *s;
 					int i;
 					for (s = p += 2; (p_ch = *p) && p_ch != ']'; p++) {} /*SHARED ITERATOR*/
 					if (!p_ch)
-						return ABORT_ALL;
+						return WM_ABORT_ALL;
 					i = p - s - 1;
 					if (i < 0 || p[-1] != ':') {
 						/* Didn't find ":]", so treat like a normal set. */
 						p = s - 2;
 						p_ch = '[';
 						if (t_ch == p_ch)
-							matched = TRUE;
+							matched = 1;
 						continue;
 					}
 					if (CC_EQ(s,i, "alnum")) {
 						if (ISALNUM(t_ch))
-							matched = TRUE;
+							matched = 1;
 					} else if (CC_EQ(s,i, "alpha")) {
 						if (ISALPHA(t_ch))
-							matched = TRUE;
+							matched = 1;
 					} else if (CC_EQ(s,i, "blank")) {
 						if (ISBLANK(t_ch))
-							matched = TRUE;
+							matched = 1;
 					} else if (CC_EQ(s,i, "cntrl")) {
 						if (ISCNTRL(t_ch))
-							matched = TRUE;
+							matched = 1;
 					} else if (CC_EQ(s,i, "digit")) {
 						if (ISDIGIT(t_ch))
-							matched = TRUE;
+							matched = 1;
 					} else if (CC_EQ(s,i, "graph")) {
 						if (ISGRAPH(t_ch))
-							matched = TRUE;
+							matched = 1;
 					} else if (CC_EQ(s,i, "lower")) {
 						if (ISLOWER(t_ch))
-							matched = TRUE;
+							matched = 1;
 					} else if (CC_EQ(s,i, "print")) {
 						if (ISPRINT(t_ch))
-							matched = TRUE;
+							matched = 1;
 					} else if (CC_EQ(s,i, "punct")) {
 						if (ISPUNCT(t_ch))
-							matched = TRUE;
+							matched = 1;
 					} else if (CC_EQ(s,i, "space")) {
 						if (ISSPACE(t_ch))
-							matched = TRUE;
+							matched = 1;
 					} else if (CC_EQ(s,i, "upper")) {
 						if (ISUPPER(t_ch))
-							matched = TRUE;
+							matched = 1;
 					} else if (CC_EQ(s,i, "xdigit")) {
 						if (ISXDIGIT(t_ch))
-							matched = TRUE;
+							matched = 1;
 					} else /* malformed [:class:] string */
-						return ABORT_ALL;
+						return WM_ABORT_ALL;
 					p_ch = 0; /* This makes "prev_ch" get set to 0. */
 				} else if (t_ch == p_ch)
-					matched = TRUE;
+					matched = 1;
 			} while (prev_ch = p_ch, (p_ch = *++p) != ']');
 			if (matched == negated || t_ch == '/')
-				return NOMATCH;
+				return WM_NOMATCH;
 			continue;
 		}
 	}
 
-	return *text ? NOMATCH : MATCH;
+	return *text ? WM_NOMATCH : WM_MATCH;
 }
 
 /* Match the "pattern" against the "text" string. */
-int wildmatch(const char *pattern, const char *text, int flags)
+int wildmatch(const char *pattern, const char *text,
+	      unsigned int flags, struct wildopts *wo)
 {
 	return dowild((const uchar*)pattern, (const uchar*)text,
-		      flags & FNM_CASEFOLD ? 1 :0);
+		      flags & WM_CASEFOLD ? 1 :0);
 }
diff --git a/wildmatch.h b/wildmatch.h
index 984a38cdc2..1c814fd5ff 100644
--- a/wildmatch.h
+++ b/wildmatch.h
@@ -1,9 +1,17 @@
-/* wildmatch.h */
+#ifndef WILDMATCH_H
+#define WILDMATCH_H
 
-#define ABORT_MALFORMED 2
-#define NOMATCH 1
-#define MATCH 0
-#define ABORT_ALL -1
-#define ABORT_TO_STARSTAR -2
+#define WM_CASEFOLD 1
 
-int wildmatch(const char *pattern, const char *text, int flags);
+#define WM_ABORT_MALFORMED 2
+#define WM_NOMATCH 1
+#define WM_MATCH 0
+#define WM_ABORT_ALL -1
+#define WM_ABORT_TO_STARSTAR -2
+
+struct wildopts;
+
+int wildmatch(const char *pattern, const char *text,
+	      unsigned int flags,
+	      struct wildopts *wo);
+#endif