[PATCH/RFC 1/3] Import wildmatch from rsync

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wildmatch is the machinery behind rsync's include/exclude pattern
rules. In general it is similar to git's ignore rules, except that
"**" matches anything including patterns

These files are imported unmodified from rsync.git commit
f92f5b166e3019db42bc7fe1aa2f1a9178cd215d when they were still in GPL-2.

rsync.git           ->  git.git
lib/wildmatch.[ch]      compat/wildmatch.[ch]
wildtest.c              test-wildmatch.c
wildtest.txt            t/t3070-wildmatch/wildtest.txt

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@xxxxxxxxx>
---
 compat/wildmatch.c             |  368 ++++++++++++++++++++++++++++++++++++++++
 compat/wildmatch.h             |    6 +
 t/t3070-wildmatch/wildtest.txt |  165 ++++++++++++++++++
 test-wildmatch.c               |  216 +++++++++++++++++++++++
 4 files changed, 755 insertions(+), 0 deletions(-)
 create mode 100644 compat/wildmatch.c
 create mode 100644 compat/wildmatch.h
 create mode 100644 t/t3070-wildmatch/wildtest.txt
 create mode 100644 test-wildmatch.c

diff --git a/compat/wildmatch.c b/compat/wildmatch.c
new file mode 100644
index 0000000..f3a1731
--- /dev/null
+++ b/compat/wildmatch.c
@@ -0,0 +1,368 @@
+/*
+**  Do shell-style pattern matching for ?, \, [], and * characters.
+**  It is 8bit clean.
+**
+**  Written by Rich $alz, mirror!rs, Wed Nov 26 19:03:17 EST 1986.
+**  Rich $alz is now <rsalz@xxxxxxx>.
+**
+**  Modified by Wayne Davison to special-case '/' matching, to make '**'
+**  work differently than '*', and to fix the character-class code.
+*/
+
+#include "rsync.h"
+
+/* What character marks an inverted character class? */
+#define NEGATE_CLASS	'!'
+#define NEGATE_CLASS2	'^'
+
+#define FALSE 0
+#define TRUE 1
+#define ABORT_ALL -1
+#define ABORT_TO_STARSTAR -2
+
+#define CC_EQ(class, len, litmatch) ((len) == sizeof (litmatch)-1 \
+				    && *(class) == *(litmatch) \
+				    && strncmp((char*)class, litmatch, len) == 0)
+
+#if defined STDC_HEADERS || !defined isascii
+# define ISASCII(c) 1
+#else
+# define ISASCII(c) isascii(c)
+#endif
+
+#ifdef isblank
+# define ISBLANK(c) (ISASCII(c) && isblank(c))
+#else
+# define ISBLANK(c) ((c) == ' ' || (c) == '\t')
+#endif
+
+#ifdef isgraph
+# define ISGRAPH(c) (ISASCII(c) && isgraph(c))
+#else
+# define ISGRAPH(c) (ISASCII(c) && isprint(c) && !isspace(c))
+#endif
+
+#define ISPRINT(c) (ISASCII(c) && isprint(c))
+#define ISDIGIT(c) (ISASCII(c) && isdigit(c))
+#define ISALNUM(c) (ISASCII(c) && isalnum(c))
+#define ISALPHA(c) (ISASCII(c) && isalpha(c))
+#define ISCNTRL(c) (ISASCII(c) && iscntrl(c))
+#define ISLOWER(c) (ISASCII(c) && islower(c))
+#define ISPUNCT(c) (ISASCII(c) && ispunct(c))
+#define ISSPACE(c) (ISASCII(c) && isspace(c))
+#define ISUPPER(c) (ISASCII(c) && isupper(c))
+#define ISXDIGIT(c) (ISASCII(c) && isxdigit(c))
+
+#ifdef WILD_TEST_ITERATIONS
+int wildmatch_iteration_count;
+#endif
+
+static int force_lower_case = 0;
+
+/* Match pattern "p" against the a virtually-joined string consisting
+ * of "text" and any strings in array "a". */
+static int dowild(const uchar *p, const uchar *text, const uchar*const *a)
+{
+    uchar p_ch;
+
+#ifdef WILD_TEST_ITERATIONS
+    wildmatch_iteration_count++;
+#endif
+
+    for ( ; (p_ch = *p) != '\0'; text++, p++) {
+	int matched, special;
+	uchar t_ch, prev_ch;
+	while ((t_ch = *text) == '\0') {
+	    if (*a == NULL) {
+		if (p_ch != '*')
+		    return ABORT_ALL;
+		break;
+	    }
+	    text = *a++;
+	}
+	if (force_lower_case && ISUPPER(t_ch))
+	    t_ch = tolower(t_ch);
+	switch (p_ch) {
+	  case '\\':
+	    /* Literal match with following character.  Note that the test
+	     * in "default" handles the p[1] == '\0' failure case. */
+	    p_ch = *++p;
+	    /* FALLTHROUGH */
+	  default:
+	    if (t_ch != p_ch)
+		return FALSE;
+	    continue;
+	  case '?':
+	    /* Match anything but '/'. */
+	    if (t_ch == '/')
+		return FALSE;
+	    continue;
+	  case '*':
+	    if (*++p == '*') {
+		while (*++p == '*') {}
+		special = TRUE;
+	    } else
+		special = FALSE;
+	    if (*p == '\0') {
+		/* Trailing "**" matches everything.  Trailing "*" matches
+		 * only if there are no more slash characters. */
+		if (!special) {
+		    do {
+			if (strchr((char*)text, '/') != NULL)
+			    return FALSE;
+		    } while ((text = *a++) != NULL);
+		}
+		return TRUE;
+	    }
+	    while (1) {
+		if (t_ch == '\0') {
+		    if ((text = *a++) == NULL)
+			break;
+		    t_ch = *text;
+		    continue;
+		}
+		if ((matched = dowild(p, text, a)) != FALSE) {
+		    if (!special || matched != ABORT_TO_STARSTAR)
+			return matched;
+		} else if (!special && t_ch == '/')
+		    return ABORT_TO_STARSTAR;
+		t_ch = *++text;
+	    }
+	    return 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. */
+	    special = p_ch == NEGATE_CLASS? TRUE : FALSE;
+	    if (special) {
+		/* Inverted character class. */
+		p_ch = *++p;
+	    }
+	    prev_ch = 0;
+	    matched = FALSE;
+	    do {
+		if (!p_ch)
+		    return ABORT_ALL;
+		if (p_ch == '\\') {
+		    p_ch = *++p;
+		    if (!p_ch)
+			return ABORT_ALL;
+		    if (t_ch == p_ch)
+			matched = TRUE;
+		} 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;
+		    }
+		    if (t_ch <= p_ch && t_ch >= prev_ch)
+			matched = TRUE;
+		    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;
+		    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;
+			continue;
+		    }
+		    if (CC_EQ(s,i, "alnum")) {
+			if (ISALNUM(t_ch))
+			    matched = TRUE;
+		    } else if (CC_EQ(s,i, "alpha")) {
+			if (ISALPHA(t_ch))
+			    matched = TRUE;
+		    } else if (CC_EQ(s,i, "blank")) {
+			if (ISBLANK(t_ch))
+			    matched = TRUE;
+		    } else if (CC_EQ(s,i, "cntrl")) {
+			if (ISCNTRL(t_ch))
+			    matched = TRUE;
+		    } else if (CC_EQ(s,i, "digit")) {
+			if (ISDIGIT(t_ch))
+			    matched = TRUE;
+		    } else if (CC_EQ(s,i, "graph")) {
+			if (ISGRAPH(t_ch))
+			    matched = TRUE;
+		    } else if (CC_EQ(s,i, "lower")) {
+			if (ISLOWER(t_ch))
+			    matched = TRUE;
+		    } else if (CC_EQ(s,i, "print")) {
+			if (ISPRINT(t_ch))
+			    matched = TRUE;
+		    } else if (CC_EQ(s,i, "punct")) {
+			if (ISPUNCT(t_ch))
+			    matched = TRUE;
+		    } else if (CC_EQ(s,i, "space")) {
+			if (ISSPACE(t_ch))
+			    matched = TRUE;
+		    } else if (CC_EQ(s,i, "upper")) {
+			if (ISUPPER(t_ch))
+			    matched = TRUE;
+		    } else if (CC_EQ(s,i, "xdigit")) {
+			if (ISXDIGIT(t_ch))
+			    matched = TRUE;
+		    } else /* malformed [:class:] string */
+			return ABORT_ALL;
+		    p_ch = 0; /* This makes "prev_ch" get set to 0. */
+		} else if (t_ch == p_ch)
+		    matched = TRUE;
+	    } while (prev_ch = p_ch, (p_ch = *++p) != ']');
+	    if (matched == special || t_ch == '/')
+		return FALSE;
+	    continue;
+	}
+    }
+
+    do {
+	if (*text)
+	    return FALSE;
+    } while ((text = *a++) != NULL);
+
+    return TRUE;
+}
+
+/* Match literal string "s" against the a virtually-joined string consisting
+ * of "text" and any strings in array "a". */
+static int doliteral(const uchar *s, const uchar *text, const uchar*const *a)
+{
+    for ( ; *s != '\0'; text++, s++) {
+	while (*text == '\0') {
+	    if ((text = *a++) == NULL)
+		return FALSE;
+	}
+	if (*text != *s)
+	    return FALSE;
+    }
+
+    do {
+	if (*text)
+	    return FALSE;
+    } while ((text = *a++) != NULL);
+
+    return TRUE;
+}
+
+/* Return the last "count" path elements from the concatenated string.
+ * We return a string pointer to the start of the string, and update the
+ * array pointer-pointer to point to any remaining string elements. */
+static const uchar *trailing_N_elements(const uchar*const **a_ptr, int count)
+{
+    const uchar*const *a = *a_ptr;
+    const uchar*const *first_a = a;
+
+    while (*a)
+	    a++;
+
+    while (a != first_a) {
+	const uchar *s = *--a;
+	s += strlen((char*)s);
+	while (--s >= *a) {
+	    if (*s == '/' && !--count) {
+		*a_ptr = a+1;
+		return s+1;
+	    }
+	}
+    }
+
+    if (count == 1) {
+	*a_ptr = a+1;
+	return *a;
+    }
+
+    return NULL;
+}
+
+/* Match the "pattern" against the "text" string. */
+int wildmatch(const char *pattern, const char *text)
+{
+    static const uchar *nomore[1]; /* A NULL pointer. */
+#ifdef WILD_TEST_ITERATIONS
+    wildmatch_iteration_count = 0;
+#endif
+    return dowild((const uchar*)pattern, (const uchar*)text, nomore) == TRUE;
+}
+
+/* Match the "pattern" against the forced-to-lower-case "text" string. */
+int iwildmatch(const char *pattern, const char *text)
+{
+    static const uchar *nomore[1]; /* A NULL pointer. */
+    int ret;
+#ifdef WILD_TEST_ITERATIONS
+    wildmatch_iteration_count = 0;
+#endif
+    force_lower_case = 1;
+    ret = dowild((const uchar*)pattern, (const uchar*)text, nomore) == TRUE;
+    force_lower_case = 0;
+    return ret;
+}
+
+/* Match pattern "p" against the a virtually-joined string consisting
+ * of all the pointers in array "texts" (which has a NULL pointer at the
+ * end).  The int "where" can be 0 (normal matching), > 0 (match only
+ * the trailing N slash-separated filename components of "texts"), or < 0
+ * (match the "pattern" at the start or after any slash in "texts"). */
+int wildmatch_array(const char *pattern, const char*const *texts, int where)
+{
+    const uchar *p = (const uchar*)pattern;
+    const uchar*const *a = (const uchar*const*)texts;
+    const uchar *text;
+    int matched;
+
+#ifdef WILD_TEST_ITERATIONS
+    wildmatch_iteration_count = 0;
+#endif
+
+    if (where > 0)
+	text = trailing_N_elements(&a, where);
+    else
+	text = *a++;
+    if (!text)
+	return FALSE;
+
+    if ((matched = dowild(p, text, a)) != TRUE && where < 0
+     && matched != ABORT_ALL) {
+	while (1) {
+	    if (*text == '\0') {
+		if ((text = (uchar*)*a++) == NULL)
+		    return FALSE;
+		continue;
+	    }
+	    if (*text++ == '/' && (matched = dowild(p, text, a)) != FALSE
+	     && matched != ABORT_TO_STARSTAR)
+		break;
+	}
+    }
+    return matched == TRUE;
+}
+
+/* Match literal string "s" against the a virtually-joined string consisting
+ * of all the pointers in array "texts" (which has a NULL pointer at the
+ * end).  The int "where" can be 0 (normal matching), or > 0 (match
+ * only the trailing N slash-separated filename components of "texts"). */
+int litmatch_array(const char *string, const char*const *texts, int where)
+{
+    const uchar *s = (const uchar*)string;
+    const uchar*const *a = (const uchar* const*)texts;
+    const uchar *text;
+
+    if (where > 0)
+	text = trailing_N_elements(&a, where);
+    else
+	text = *a++;
+    if (!text)
+	return FALSE;
+
+    return doliteral(s, text, a) == TRUE;
+}
diff --git a/compat/wildmatch.h b/compat/wildmatch.h
new file mode 100644
index 0000000..e7f1a35
--- /dev/null
+++ b/compat/wildmatch.h
@@ -0,0 +1,6 @@
+/* wildmatch.h */
+
+int wildmatch(const char *pattern, const char *text);
+int iwildmatch(const char *pattern, const char *text);
+int wildmatch_array(const char *pattern, const char*const *texts, int where);
+int litmatch_array(const char *string, const char*const *texts, int where);
diff --git a/t/t3070-wildmatch/wildtest.txt b/t/t3070-wildmatch/wildtest.txt
new file mode 100644
index 0000000..42c1678
--- /dev/null
+++ b/t/t3070-wildmatch/wildtest.txt
@@ -0,0 +1,165 @@
+# Input is in the following format (all items white-space separated):
+#
+# The first two items are 1 or 0 indicating if the wildmat call is expected to
+# succeed and if fnmatch works the same way as wildmat, respectively.  After
+# that is a text string for the match, and a pattern string.  Strings can be
+# quoted (if desired) in either double or single quotes, as well as backticks.
+#
+# MATCH FNMATCH_SAME "text to match" 'pattern to use'
+
+# Basic wildmat features
+1 1 foo			foo
+0 1 foo			bar
+1 1 ''			""
+1 1 foo			???
+0 1 foo			??
+1 1 foo			*
+1 1 foo			f*
+0 1 foo			*f
+1 1 foo			*foo*
+1 1 foobar		*ob*a*r*
+1 1 aaaaaaabababab	*ab
+1 1 foo*		foo\*
+0 1 foobar		foo\*bar
+1 1 f\oo		f\\oo
+1 1 ball		*[al]?
+0 1 ten			[ten]
+1 1 ten			**[!te]
+0 1 ten			**[!ten]
+1 1 ten			t[a-g]n
+0 1 ten			t[!a-g]n
+1 1 ton			t[!a-g]n
+1 1 ton			t[^a-g]n
+1 1 a]b			a[]]b
+1 1 a-b			a[]-]b
+1 1 a]b			a[]-]b
+0 1 aab			a[]-]b
+1 1 aab			a[]a-]b
+1 1 ]			]
+
+# Extended slash-matching features
+0 1 foo/baz/bar		foo*bar
+1 1 foo/baz/bar		foo**bar
+0 1 foo/bar		foo?bar
+0 1 foo/bar		foo[/]bar
+0 1 foo/bar		f[^eiu][^eiu][^eiu][^eiu][^eiu]r
+1 1 foo-bar		f[^eiu][^eiu][^eiu][^eiu][^eiu]r
+0 1 foo			**/foo
+1 1 /foo		**/foo
+1 1 bar/baz/foo		**/foo
+0 1 bar/baz/foo		*/foo
+0 0 foo/bar/baz		**/bar*
+1 1 deep/foo/bar/baz	**/bar/*
+0 1 deep/foo/bar/baz/	**/bar/*
+1 1 deep/foo/bar/baz/	**/bar/**
+0 1 deep/foo/bar	**/bar/*
+1 1 deep/foo/bar/	**/bar/**
+1 1 foo/bar/baz		**/bar**
+1 1 foo/bar/baz/x	*/bar/**
+0 0 deep/foo/bar/baz/x	*/bar/**
+1 1 deep/foo/bar/baz/x	**/bar/*/*
+
+# Various additional tests
+0 1 acrt		a[c-c]st
+1 1 acrt		a[c-c]rt
+0 1 ]			[!]-]
+1 1 a			[!]-]
+0 1 ''			\
+0 1 \			\
+0 1 /\			*/\
+1 1 /\			*/\\
+1 1 foo			foo
+1 1 @foo		@foo
+0 1 foo			@foo
+1 1 [ab]		\[ab]
+1 1 [ab]		[[]ab]
+1 1 [ab]		[[:]ab]
+0 1 [ab]		[[::]ab]
+1 1 [ab]		[[:digit]ab]
+1 1 [ab]		[\[:]ab]
+1 1 ?a?b		\??\?b
+1 1 abc			\a\b\c
+0 1 foo			''
+1 1 foo/bar/baz/to	**/t[o]
+
+# Character class tests
+1 1 a1B		[[:alpha:]][[:digit:]][[:upper:]]
+0 1 a		[[:digit:][:upper:][:space:]]
+1 1 A		[[:digit:][:upper:][:space:]]
+1 1 1		[[:digit:][:upper:][:space:]]
+0 1 1		[[:digit:][:upper:][:spaci:]]
+1 1 ' '		[[:digit:][:upper:][:space:]]
+0 1 .		[[:digit:][:upper:][:space:]]
+1 1 .		[[:digit:][:punct:][:space:]]
+1 1 5		[[:xdigit:]]
+1 1 f		[[:xdigit:]]
+1 1 D		[[:xdigit:]]
+1 1 _		[[:alnum:][:alpha:][:blank:][:cntrl:][:digit:][:graph:][:lower:][:print:][:punct:][:space:][:upper:][:xdigit:]]
+#1 1 �		[^[:alnum:][:alpha:][:blank:][:cntrl:][:digit:][:graph:][:lower:][:print:][:punct:][:space:][:upper:][:xdigit:]]
+1 1 		[^[:alnum:][:alpha:][:blank:][:digit:][:graph:][:lower:][:print:][:punct:][:space:][:upper:][:xdigit:]]
+1 1 .		[^[:alnum:][:alpha:][:blank:][:cntrl:][:digit:][:lower:][:space:][:upper:][:xdigit:]]
+1 1 5		[a-c[:digit:]x-z]
+1 1 b		[a-c[:digit:]x-z]
+1 1 y		[a-c[:digit:]x-z]
+0 1 q		[a-c[:digit:]x-z]
+
+# Additional tests, including some malformed wildmats
+1 1 ]		[\\-^]
+0 1 [		[\\-^]
+1 1 -		[\-_]
+1 1 ]		[\]]
+0 1 \]		[\]]
+0 1 \		[\]]
+0 1 ab		a[]b
+0 1 a[]b	a[]b
+0 1 ab[		ab[
+0 1 ab		[!
+0 1 ab		[-
+1 1 -		[-]
+0 1 -		[a-
+0 1 -		[!a-
+1 1 -		[--A]
+1 1 5		[--A]
+1 1 ' '		'[ --]'
+1 1 $		'[ --]'
+1 1 -		'[ --]'
+0 1 0		'[ --]'
+1 1 -		[---]
+1 1 -		[------]
+0 1 j		[a-e-n]
+1 1 -		[a-e-n]
+1 1 a		[!------]
+0 1 [		[]-a]
+1 1 ^		[]-a]
+0 1 ^		[!]-a]
+1 1 [		[!]-a]
+1 1 ^		[a^bc]
+1 1 -b]		[a-]b]
+0 1 \		[\]
+1 1 \		[\\]
+0 1 \		[!\\]
+1 1 G		[A-\\]
+0 1 aaabbb	b*a
+0 1 aabcaa	*ba*
+1 1 ,		[,]
+1 1 ,		[\\,]
+1 1 \		[\\,]
+1 1 -		[,-.]
+0 1 +		[,-.]
+0 1 -.]		[,-.]
+1 1 2		[\1-\3]
+1 1 3		[\1-\3]
+0 1 4		[\1-\3]
+1 1 \		[[-\]]
+1 1 [		[[-\]]
+1 1 ]		[[-\]]
+0 1 -		[[-\]]
+
+# Test recursion and the abort code (use "wildtest -i" to see iteration counts)
+1 1 -adobe-courier-bold-o-normal--12-120-75-75-m-70-iso8859-1	-*-*-*-*-*-*-12-*-*-*-m-*-*-*
+0 1 -adobe-courier-bold-o-normal--12-120-75-75-X-70-iso8859-1	-*-*-*-*-*-*-12-*-*-*-m-*-*-*
+0 1 -adobe-courier-bold-o-normal--12-120-75-75-/-70-iso8859-1	-*-*-*-*-*-*-12-*-*-*-m-*-*-*
+1 1 /adobe/courier/bold/o/normal//12/120/75/75/m/70/iso8859/1	/*/*/*/*/*/*/12/*/*/*/m/*/*/*
+0 1 /adobe/courier/bold/o/normal//12/120/75/75/X/70/iso8859/1	/*/*/*/*/*/*/12/*/*/*/m/*/*/*
+1 1 abcd/abcdefg/abcdefghijk/abcdefghijklmnop.txt		**/*a*b*g*n*t
+0 1 abcd/abcdefg/abcdefghijk/abcdefghijklmnop.txtz		**/*a*b*g*n*t
diff --git a/test-wildmatch.c b/test-wildmatch.c
new file mode 100644
index 0000000..3456bac
--- /dev/null
+++ b/test-wildmatch.c
@@ -0,0 +1,216 @@
+/*
+ * Test suite for the wildmatch code.
+ *
+ * Copyright (C) 2003-2007 Wayne Davison
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+/*#define COMPARE_WITH_FNMATCH*/
+
+#define WILD_TEST_ITERATIONS
+#include "lib/wildmatch.c"
+
+#include <popt.h>
+
+#ifdef COMPARE_WITH_FNMATCH
+#include <fnmatch.h>
+
+int fnmatch_errors = 0;
+#endif
+
+int wildmatch_errors = 0;
+
+typedef char bool;
+
+int output_iterations = 0;
+int explode_mod = 0;
+int empties_mod = 0;
+int empty_at_start = 0;
+int empty_at_end = 0;
+
+static struct poptOption long_options[] = {
+  /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
+  {"iterations",     'i', POPT_ARG_NONE,   &output_iterations, 0, 0, 0},
+  {"empties",        'e', POPT_ARG_STRING, 0, 'e', 0, 0},
+  {"explode",        'x', POPT_ARG_INT,    &explode_mod, 0, 0, 0},
+  {0,0,0,0, 0, 0, 0}
+};
+
+/* match just at the start of string (anchored tests) */
+static void
+run_test(int line, bool matches, bool same_as_fnmatch,
+	 const char *text, const char *pattern)
+{
+    bool matched;
+#ifdef COMPARE_WITH_FNMATCH
+    bool fn_matched;
+    int flags = strstr(pattern, "**")? 0 : FNM_PATHNAME;
+#else
+    same_as_fnmatch = 0; /* Get rid of unused-variable compiler warning. */
+#endif
+
+    if (explode_mod) {
+	char buf[MAXPATHLEN*2], *texts[MAXPATHLEN];
+	int pos = 0, cnt = 0, ndx = 0, len = strlen(text);
+
+	if (empty_at_start)
+	    texts[ndx++] = "";
+	/* An empty string must turn into at least one empty array item. */
+	while (1) {
+	    texts[ndx] = buf + ndx * (explode_mod + 1);
+	    strlcpy(texts[ndx++], text + pos, explode_mod + 1);
+	    if (pos + explode_mod >= len)
+		break;
+	    pos += explode_mod;
+	    if (!(++cnt % empties_mod))
+		texts[ndx++] = "";
+	}
+	if (empty_at_end)
+	    texts[ndx++] = "";
+	texts[ndx] = NULL;
+	matched = wildmatch_array(pattern, (const char**)texts, 0);
+    } else
+	matched = wildmatch(pattern, text);
+#ifdef COMPARE_WITH_FNMATCH
+    fn_matched = !fnmatch(pattern, text, flags);
+#endif
+    if (matched != matches) {
+	printf("wildmatch failure on line %d:\n  %s\n  %s\n  expected %s match\n",
+	       line, text, pattern, matches? "a" : "NO");
+	wildmatch_errors++;
+    }
+#ifdef COMPARE_WITH_FNMATCH
+    if (fn_matched != (matches ^ !same_as_fnmatch)) {
+	printf("fnmatch disagreement on line %d:\n  %s\n  %s\n  expected %s match\n",
+	       line, text, pattern, matches ^ !same_as_fnmatch? "a" : "NO");
+	fnmatch_errors++;
+    }
+#endif
+    if (output_iterations) {
+	printf("%d: \"%s\" iterations = %d\n", line, pattern,
+	       wildmatch_iteration_count);
+    }
+}
+
+int
+main(int argc, char **argv)
+{
+    char buf[2048], *s, *string[2], *end[2];
+    const char *arg;
+    FILE *fp;
+    int opt, line, i, flag[2];
+    poptContext pc = poptGetContext("wildtest", argc, (const char**)argv,
+				    long_options, 0);
+
+    while ((opt = poptGetNextOpt(pc)) != -1) {
+	switch (opt) {
+	  case 'e':
+	    arg = poptGetOptArg(pc);
+	    empties_mod = atoi(arg);
+	    if (strchr(arg, 's'))
+		empty_at_start = 1;
+	    if (strchr(arg, 'e'))
+		empty_at_end = 1;
+	    if (!explode_mod)
+		explode_mod = 1024;
+	    break;
+	  default:
+	    fprintf(stderr, "%s: %s\n",
+		    poptBadOption(pc, POPT_BADOPTION_NOALIAS),
+		    poptStrerror(opt));
+	    exit(1);
+	}
+    }
+
+    if (explode_mod && !empties_mod)
+	empties_mod = 1024;
+
+    argv = (char**)poptGetArgs(pc);
+    if (!argv || argv[1]) {
+	fprintf(stderr, "Usage: wildtest [OPTIONS] TESTFILE\n");
+	exit(1);
+    }
+
+    if ((fp = fopen(*argv, "r")) == NULL) {
+	fprintf(stderr, "Unable to open %s\n", *argv);
+	exit(1);
+    }
+
+    line = 0;
+    while (fgets(buf, sizeof buf, fp)) {
+	line++;
+	if (*buf == '#' || *buf == '\n')
+	    continue;
+	for (s = buf, i = 0; i <= 1; i++) {
+	    if (*s == '1')
+		flag[i] = 1;
+	    else if (*s == '0')
+		flag[i] = 0;
+	    else
+		flag[i] = -1;
+	    if (*++s != ' ' && *s != '\t')
+		flag[i] = -1;
+	    if (flag[i] < 0) {
+		fprintf(stderr, "Invalid flag syntax on line %d of %s:\n%s",
+			line, *argv, buf);
+		exit(1);
+	    }
+	    while (*++s == ' ' || *s == '\t') {}
+	}
+	for (i = 0; i <= 1; i++) {
+	    if (*s == '\'' || *s == '"' || *s == '`') {
+		char quote = *s++;
+		string[i] = s;
+		while (*s && *s != quote) s++;
+		if (!*s) {
+		    fprintf(stderr, "Unmatched quote on line %d of %s:\n%s",
+			    line, *argv, buf);
+		    exit(1);
+		}
+		end[i] = s;
+	    }
+	    else {
+		if (!*s || *s == '\n') {
+		    fprintf(stderr, "Not enough strings on line %d of %s:\n%s",
+			    line, *argv, buf);
+		    exit(1);
+		}
+		string[i] = s;
+		while (*++s && *s != ' ' && *s != '\t' && *s != '\n') {}
+		end[i] = s;
+	    }
+	    while (*++s == ' ' || *s == '\t') {}
+	}
+	*end[0] = *end[1] = '\0';
+	run_test(line, flag[0], flag[1], string[0], string[1]);
+    }
+
+    if (!wildmatch_errors)
+	fputs("No", stdout);
+    else
+	printf("%d", wildmatch_errors);
+    printf(" wildmatch error%s found.\n", wildmatch_errors == 1? "" : "s");
+
+#ifdef COMPARE_WITH_FNMATCH
+    if (!fnmatch_errors)
+	fputs("No", stdout);
+    else
+	printf("%d", fnmatch_errors);
+    printf(" fnmatch error%s found.\n", fnmatch_errors == 1? "" : "s");
+
+#endif
+
+    return 0;
+}
-- 
1.7.8.36.g69ee2

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