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authorRussell Belfer <rb@github.com>2012-10-11 11:58:00 -0700
committerRussell Belfer <rb@github.com>2012-10-15 12:54:46 -0700
commit824d5e4d260fc740dbe9251008439b9e58db5f19 (patch)
tree03d0c83fbf7f9921c1a41b08c7c3f7c2a426bd17 /src/fnmatch.c
parent1c3acf148b97c952fcb942a73cda9f891f04f1b5 (diff)
downloadlibgit2-824d5e4d260fc740dbe9251008439b9e58db5f19.tar.gz
Always use internal fnmatch, not system
Diffstat (limited to 'src/fnmatch.c')
-rw-r--r--src/fnmatch.c180
1 files changed, 180 insertions, 0 deletions
diff --git a/src/fnmatch.c b/src/fnmatch.c
new file mode 100644
index 000000000..835d811bc
--- /dev/null
+++ b/src/fnmatch.c
@@ -0,0 +1,180 @@
+/*
+ * Copyright (C) 2009-2012 the libgit2 contributors
+ *
+ * This file is part of libgit2, distributed under the GNU GPL v2 with
+ * a Linking Exception. For full terms see the included COPYING file.
+ */
+
+/*
+ * Function fnmatch() as specified in POSIX 1003.2-1992, section B.6.
+ * Compares a filename or pathname to a pattern.
+ */
+
+#include <ctype.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "fnmatch.h"
+
+#define EOS '\0'
+
+#define RANGE_MATCH 1
+#define RANGE_NOMATCH 0
+#define RANGE_ERROR (-1)
+
+static int rangematch(const char *, char, int, char **);
+
+int
+p_fnmatch(const char *pattern, const char *string, int flags)
+{
+ const char *stringstart;
+ char *newp;
+ char c, test;
+
+ for (stringstart = string;;)
+ switch (c = *pattern++) {
+ case EOS:
+ if ((flags & FNM_LEADING_DIR) && *string == '/')
+ return (0);
+ return (*string == EOS ? 0 : FNM_NOMATCH);
+ case '?':
+ if (*string == EOS)
+ return (FNM_NOMATCH);
+ if (*string == '/' && (flags & FNM_PATHNAME))
+ return (FNM_NOMATCH);
+ if (*string == '.' && (flags & FNM_PERIOD) &&
+ (string == stringstart ||
+ ((flags & FNM_PATHNAME) && *(string - 1) == '/')))
+ return (FNM_NOMATCH);
+ ++string;
+ break;
+ case '*':
+ c = *pattern;
+ /* Collapse multiple stars. */
+ while (c == '*')
+ c = *++pattern;
+
+ if (*string == '.' && (flags & FNM_PERIOD) &&
+ (string == stringstart ||
+ ((flags & FNM_PATHNAME) && *(string - 1) == '/')))
+ return (FNM_NOMATCH);
+
+ /* Optimize for pattern with * at end or before /. */
+ if (c == EOS) {
+ if (flags & FNM_PATHNAME)
+ return ((flags & FNM_LEADING_DIR) ||
+ strchr(string, '/') == NULL ?
+ 0 : FNM_NOMATCH);
+ else
+ return (0);
+ } else if (c == '/' && (flags & FNM_PATHNAME)) {
+ if ((string = strchr(string, '/')) == NULL)
+ return (FNM_NOMATCH);
+ break;
+ }
+
+ /* General case, use recursion. */
+ while ((test = *string) != EOS) {
+ if (!p_fnmatch(pattern, string, flags & ~FNM_PERIOD))
+ return (0);
+ if (test == '/' && (flags & FNM_PATHNAME))
+ break;
+ ++string;
+ }
+ return (FNM_NOMATCH);
+ case '[':
+ if (*string == EOS)
+ return (FNM_NOMATCH);
+ if (*string == '/' && (flags & FNM_PATHNAME))
+ return (FNM_NOMATCH);
+ if (*string == '.' && (flags & FNM_PERIOD) &&
+ (string == stringstart ||
+ ((flags & FNM_PATHNAME) && *(string - 1) == '/')))
+ return (FNM_NOMATCH);
+
+ switch (rangematch(pattern, *string, flags, &newp)) {
+ case RANGE_ERROR:
+ /* not a good range, treat as normal text */
+ goto normal;
+ case RANGE_MATCH:
+ pattern = newp;
+ break;
+ case RANGE_NOMATCH:
+ return (FNM_NOMATCH);
+ }
+ ++string;
+ break;
+ case '\\':
+ if (!(flags & FNM_NOESCAPE)) {
+ if ((c = *pattern++) == EOS) {
+ c = '\\';
+ --pattern;
+ }
+ }
+ /* FALLTHROUGH */
+ default:
+ normal:
+ if (c != *string && !((flags & FNM_CASEFOLD) &&
+ (tolower((unsigned char)c) ==
+ tolower((unsigned char)*string))))
+ return (FNM_NOMATCH);
+ ++string;
+ break;
+ }
+ /* NOTREACHED */
+}
+
+static int
+rangematch(const char *pattern, char test, int flags, char **newp)
+{
+ int negate, ok;
+ char c, c2;
+
+ /*
+ * A bracket expression starting with an unquoted circumflex
+ * character produces unspecified results (IEEE 1003.2-1992,
+ * 3.13.2). This implementation treats it like '!', for
+ * consistency with the regular expression syntax.
+ * J.T. Conklin (conklin@ngai.kaleida.com)
+ */
+ if ((negate = (*pattern == '!' || *pattern == '^')) != 0)
+ ++pattern;
+
+ if (flags & FNM_CASEFOLD)
+ test = (char)tolower((unsigned char)test);
+
+ /*
+ * A right bracket shall lose its special meaning and represent
+ * itself in a bracket expression if it occurs first in the list.
+ * -- POSIX.2 2.8.3.2
+ */
+ ok = 0;
+ c = *pattern++;
+ do {
+ if (c == '\\' && !(flags & FNM_NOESCAPE))
+ c = *pattern++;
+ if (c == EOS)
+ return (RANGE_ERROR);
+ if (c == '/' && (flags & FNM_PATHNAME))
+ return (RANGE_NOMATCH);
+ if ((flags & FNM_CASEFOLD))
+ c = (char)tolower((unsigned char)c);
+ if (*pattern == '-'
+ && (c2 = *(pattern+1)) != EOS && c2 != ']') {
+ pattern += 2;
+ if (c2 == '\\' && !(flags & FNM_NOESCAPE))
+ c2 = *pattern++;
+ if (c2 == EOS)
+ return (RANGE_ERROR);
+ if (flags & FNM_CASEFOLD)
+ c2 = (char)tolower((unsigned char)c2);
+ if (c <= test && test <= c2)
+ ok = 1;
+ } else if (c == test)
+ ok = 1;
+ } while ((c = *pattern++) != ']');
+
+ *newp = (char *)pattern;
+ return (ok == negate ? RANGE_NOMATCH : RANGE_MATCH);
+}
+