[thirdparty/git.git] / t / helper / test-path-utils.c

#include "cache.h"
#include "string-list.h"
#include "utf8.h"

/*
 * A "string_list_each_func_t" function that normalizes an entry from
 * GIT_CEILING_DIRECTORIES.  If the path is unusable for some reason,
 * die with an explanation.
 */
static int normalize_ceiling_entry(struct string_list_item *item, void *unused)
{
	char *ceil = item->string;

	if (!*ceil)
		die("Empty path is not supported");
	if (!is_absolute_path(ceil))
		die("Path \"%s\" is not absolute", ceil);
	if (normalize_path_copy(ceil, ceil) < 0)
		die("Path \"%s\" could not be normalized", ceil);
	return 1;
}

static void normalize_argv_string(const char **var, const char *input)
{
	if (!strcmp(input, "<null>"))
		*var = NULL;
	else if (!strcmp(input, "<empty>"))
		*var = "";
	else
		*var = input;

	if (*var && (**var == '<' || **var == '('))
		die("Bad value: %s\n", input);
}

struct test_data {
	const char *from;  /* input:  transform from this ... */
	const char *to;    /* output: ... to this.            */
	const char *alternative; /* output: ... or this.      */
};

/*
 * Compatibility wrappers for OpenBSD, whose basename(3) and dirname(3)
 * have const parameters.
 */
static char *posix_basename(char *path)
{
	return basename(path);
}

static char *posix_dirname(char *path)
{
	return dirname(path);
}

static int test_function(struct test_data *data, char *(*func)(char *input),
	const char *funcname)
{
	int failed = 0, i;
	char buffer[1024];
	char *to;

	for (i = 0; data[i].to; i++) {
		if (!data[i].from)
			to = func(NULL);
		else {
			xsnprintf(buffer, sizeof(buffer), "%s", data[i].from);
			to = func(buffer);
		}
		if (!strcmp(to, data[i].to))
			continue;
		if (!data[i].alternative)
			error("FAIL: %s(%s) => '%s' != '%s'\n",
				funcname, data[i].from, to, data[i].to);
		else if (!strcmp(to, data[i].alternative))
			continue;
		else
			error("FAIL: %s(%s) => '%s' != '%s', '%s'\n",
				funcname, data[i].from, to, data[i].to,
				data[i].alternative);
		failed = 1;
	}
	return failed;
}

static struct test_data basename_data[] = {
	/* --- POSIX type paths --- */
	{ NULL,              "."    },
	{ "",                "."    },
	{ ".",               "."    },
	{ "..",              ".."   },
	{ "/",               "/"    },
	{ "//",              "/", "//" },
	{ "///",             "/", "//" },
	{ "////",            "/", "//" },
	{ "usr",             "usr"  },
	{ "/usr",            "usr"  },
	{ "/usr/",           "usr"  },
	{ "/usr//",          "usr"  },
	{ "/usr/lib",        "lib"  },
	{ "usr/lib",         "lib"  },
	{ "usr/lib///",      "lib"  },

#if defined(__MINGW32__) || defined(_MSC_VER)
	/* --- win32 type paths --- */
	{ "\\usr",           "usr"  },
	{ "\\usr\\",         "usr"  },
	{ "\\usr\\\\",       "usr"  },
	{ "\\usr\\lib",      "lib"  },
	{ "usr\\lib",        "lib"  },
	{ "usr\\lib\\\\\\",  "lib"  },
	{ "C:/usr",          "usr"  },
	{ "C:/usr",          "usr"  },
	{ "C:/usr/",         "usr"  },
	{ "C:/usr//",        "usr"  },
	{ "C:/usr/lib",      "lib"  },
	{ "C:usr/lib",       "lib"  },
	{ "C:usr/lib///",    "lib"  },
	{ "C:",              "."    },
	{ "C:a",             "a"    },
	{ "C:/",             "/"    },
	{ "C:///",           "/"    },
	{ "\\",              "\\", "/" },
	{ "\\\\",            "\\", "/" },
	{ "\\\\\\",          "\\", "/" },
#endif
	{ NULL,              NULL   }
};

static struct test_data dirname_data[] = {
	/* --- POSIX type paths --- */
	{ NULL,              "."      },
	{ "",                "."      },
	{ ".",               "."      },
	{ "..",              "."      },
	{ "/",               "/"      },
	{ "//",              "/", "//" },
	{ "///",             "/", "//" },
	{ "////",            "/", "//" },
	{ "usr",             "."      },
	{ "/usr",            "/"      },
	{ "/usr/",           "/"      },
	{ "/usr//",          "/"      },
	{ "/usr/lib",        "/usr"   },
	{ "usr/lib",         "usr"    },
	{ "usr/lib///",      "usr"    },

#if defined(__MINGW32__) || defined(_MSC_VER)
	/* --- win32 type paths --- */
	{ "\\",              "\\"     },
	{ "\\\\",            "\\\\"   },
	{ "\\usr",           "\\"     },
	{ "\\usr\\",         "\\"     },
	{ "\\usr\\\\",       "\\"     },
	{ "\\usr\\lib",      "\\usr"  },
	{ "usr\\lib",        "usr"    },
	{ "usr\\lib\\\\\\",  "usr"    },
	{ "C:a",             "C:."    },
	{ "C:/",             "C:/"    },
	{ "C:///",           "C:/"    },
	{ "C:/usr",          "C:/"    },
	{ "C:/usr/",         "C:/"    },
	{ "C:/usr//",        "C:/"    },
	{ "C:/usr/lib",      "C:/usr" },
	{ "C:usr/lib",       "C:usr"  },
	{ "C:usr/lib///",    "C:usr"  },
	{ "\\\\\\",          "\\"     },
	{ "\\\\\\\\",        "\\"     },
	{ "C:",              "C:.", "." },
#endif
	{ NULL,              NULL     }
};

static int is_dotgitmodules(const char *path)
{
	return is_hfs_dotgitmodules(path) || is_ntfs_dotgitmodules(path);
}

/*
 * A very simple, reproducible pseudo-random generator. Copied from
 * `test-genrandom.c`.
 */
static uint64_t my_random_value = 1234;

static uint64_t my_random(void)
{
	my_random_value = my_random_value * 1103515245 + 12345;
	return my_random_value;
}

/*
 * A fast approximation of the square root, without requiring math.h.
 *
 * It uses Newton's method to approximate the solution of 0 = x^2 - value.
 */
static double my_sqrt(double value)
{
	const double epsilon = 1e-6;
	double x = value;

	if (value == 0)
		return 0;

	for (;;) {
		double delta = (value / x - x) / 2;
		if (delta < epsilon && delta > -epsilon)
			return x + delta;
		x += delta;
	}
}

static int protect_ntfs_hfs_benchmark(int argc, const char **argv)
{
	size_t i, j, nr, min_len = 3, max_len = 20;
	char **names;
	int repetitions = 15, file_mode = 0100644;
	uint64_t begin, end;
	double m[3][2], v[3][2];
	uint64_t cumul;
	double cumul2;

	if (argc > 1 && !strcmp(argv[1], "--with-symlink-mode")) {
		file_mode = 0120000;
		argc--;
		argv++;
	}

	nr = argc > 1 ? strtoul(argv[1], NULL, 0) : 1000000;
	ALLOC_ARRAY(names, nr);

	if (argc > 2) {
		min_len = strtoul(argv[2], NULL, 0);
		if (argc > 3)
			max_len = strtoul(argv[3], NULL, 0);
		if (min_len > max_len)
			die("min_len > max_len");
	}

	for (i = 0; i < nr; i++) {
		size_t len = min_len + (my_random() % (max_len + 1 - min_len));

		names[i] = xmallocz(len);
		while (len > 0)
			names[i][--len] = (char)(' ' + (my_random() % ('\x7f' - ' ')));
	}

	for (protect_ntfs = 0; protect_ntfs < 2; protect_ntfs++)
		for (protect_hfs = 0; protect_hfs < 2; protect_hfs++) {
			cumul = 0;
			cumul2 = 0;
			for (i = 0; i < repetitions; i++) {
				begin = getnanotime();
				for (j = 0; j < nr; j++)
					verify_path(names[j], file_mode);
				end = getnanotime();
				printf("protect_ntfs = %d, protect_hfs = %d: %lfms\n", protect_ntfs, protect_hfs, (end-begin) / (double)1e6);
				cumul += end - begin;
				cumul2 += (end - begin) * (end - begin);
			}
			m[protect_ntfs][protect_hfs] = cumul / (double)repetitions;
			v[protect_ntfs][protect_hfs] = my_sqrt(cumul2 / (double)repetitions - m[protect_ntfs][protect_hfs] * m[protect_ntfs][protect_hfs]);
			printf("mean: %lfms, stddev: %lfms\n", m[protect_ntfs][protect_hfs] / (double)1e6, v[protect_ntfs][protect_hfs] / (double)1e6);
		}

	for (protect_ntfs = 0; protect_ntfs < 2; protect_ntfs++)
		for (protect_hfs = 0; protect_hfs < 2; protect_hfs++)
			printf("ntfs=%d/hfs=%d: %lf%% slower\n", protect_ntfs, protect_hfs, (m[protect_ntfs][protect_hfs] - m[0][0]) * 100 / m[0][0]);

	return 0;
}

int cmd_main(int argc, const char **argv)
{
	if (argc == 3 && !strcmp(argv[1], "normalize_path_copy")) {
		char *buf = xmallocz(strlen(argv[2]));
		int rv = normalize_path_copy(buf, argv[2]);
		if (rv)
			buf = "++failed++";
		puts(buf);
		return 0;
	}

	if (argc >= 2 && !strcmp(argv[1], "real_path")) {
		while (argc > 2) {
			puts(real_path(argv[2]));
			argc--;
			argv++;
		}
		return 0;
	}

	if (argc >= 2 && !strcmp(argv[1], "absolute_path")) {
		while (argc > 2) {
			puts(absolute_path(argv[2]));
			argc--;
			argv++;
		}
		return 0;
	}

	if (argc == 4 && !strcmp(argv[1], "longest_ancestor_length")) {
		int len;
		struct string_list ceiling_dirs = STRING_LIST_INIT_DUP;
		char *path = xstrdup(argv[2]);

		/*
		 * We have to normalize the arguments because under
		 * Windows, bash mangles arguments that look like
		 * absolute POSIX paths or colon-separate lists of
		 * absolute POSIX paths into DOS paths (e.g.,
		 * "/foo:/foo/bar" might be converted to
		 * "D:\Src\msysgit\foo;D:\Src\msysgit\foo\bar"),
		 * whereas longest_ancestor_length() requires paths
		 * that use forward slashes.
		 */
		if (normalize_path_copy(path, path))
			die("Path \"%s\" could not be normalized", argv[2]);
		string_list_split(&ceiling_dirs, argv[3], PATH_SEP, -1);
		filter_string_list(&ceiling_dirs, 0,
				   normalize_ceiling_entry, NULL);
		len = longest_ancestor_length(path, &ceiling_dirs);
		string_list_clear(&ceiling_dirs, 0);
		free(path);
		printf("%d\n", len);
		return 0;
	}

	if (argc >= 4 && !strcmp(argv[1], "prefix_path")) {
		const char *prefix = argv[2];
		int prefix_len = strlen(prefix);
		int nongit_ok;
		setup_git_directory_gently(&nongit_ok);
		while (argc > 3) {
			puts(prefix_path(prefix, prefix_len, argv[3]));
			argc--;
			argv++;
		}
		return 0;
	}

	if (argc == 4 && !strcmp(argv[1], "strip_path_suffix")) {
		char *prefix = strip_path_suffix(argv[2], argv[3]);
		printf("%s\n", prefix ? prefix : "(null)");
		return 0;
	}

	if (argc == 3 && !strcmp(argv[1], "print_path")) {
		puts(argv[2]);
		return 0;
	}

	if (argc == 4 && !strcmp(argv[1], "relative_path")) {
		struct strbuf sb = STRBUF_INIT;
		const char *in, *prefix, *rel;
		normalize_argv_string(&in, argv[2]);
		normalize_argv_string(&prefix, argv[3]);
		rel = relative_path(in, prefix, &sb);
		if (!rel)
			puts("(null)");
		else
			puts(strlen(rel) > 0 ? rel : "(empty)");
		strbuf_release(&sb);
		return 0;
	}

	if (argc == 2 && !strcmp(argv[1], "basename"))
		return test_function(basename_data, posix_basename, argv[1]);

	if (argc == 2 && !strcmp(argv[1], "dirname"))
		return test_function(dirname_data, posix_dirname, argv[1]);

	if (argc > 2 && !strcmp(argv[1], "is_dotgitmodules")) {
		int res = 0, expect = 1, i;
		for (i = 2; i < argc; i++)
			if (!strcmp("--not", argv[i]))
				expect = !expect;
			else if (expect != is_dotgitmodules(argv[i]))
				res = error("'%s' is %s.gitmodules", argv[i],
					    expect ? "not " : "");
			else
				fprintf(stderr, "ok: '%s' is %s.gitmodules\n",
					argv[i], expect ? "" : "not ");
		return !!res;
	}

	if (argc > 1 && !strcmp(argv[1], "protect_ntfs_hfs"))
		return !!protect_ntfs_hfs_benchmark(argc - 1, argv + 1);

	fprintf(stderr, "%s: unknown function name: %s\n", argv[0],
		argv[1] ? argv[1] : "(there was none)");
	return 1;
}
Commit	Line	Data
ae299be0	1	#include "cache.h"
31171d9e	2	#include "string-list.h"
dc2d9ba3	3	#include "utf8.h"
ae299be0	4
9e2326c7 MH	5	/*
	6	* A "string_list_each_func_t" function that normalizes an entry from
	7	* GIT_CEILING_DIRECTORIES. If the path is unusable for some reason,
	8	* die with an explanation.
	9	*/
	10	static int normalize_ceiling_entry(struct string_list_item item, void unused)
	11	{
62f17513	12	char *ceil = item->string;
9e2326c7	13
62f17513	14	if (!*ceil)
9e2326c7	15	die("Empty path is not supported");
9e2326c7 MH	16	if (!is_absolute_path(ceil))
9e2326c7 MH	17	die("Path \"%s\" is not absolute", ceil);
62f17513	18	if (normalize_path_copy(ceil, ceil) < 0)
9e2326c7	19	die("Path \"%s\" could not be normalized", ceil);
9e2326c7 MH	20	return 1;
	21	}
	22
203439b2 JX	23	static void normalize_argv_string(const char *var, const char input)
	24	{
	25	if (!strcmp(input, "<null>"))
	26	*var = NULL;
	27	else if (!strcmp(input, "<empty>"))
	28	*var = "";
	29	else
	30	*var = input;
	31
	32	if (var && (var == '<' \|\| *var == '('))
	33	die("Bad value: %s\n", input);
	34	}
	35
7d1aaa68 JS	36	struct test_data {
	37	const char from; / input: transform from this ... */
	38	const char to; / output: ... to this. */
371471ce	39	const char alternative; / output: ... or this. */
7d1aaa68 JS	40	};
7d1aaa68 JS	41
29c2eda8 RS	42	/*
	43	* Compatibility wrappers for OpenBSD, whose basename(3) and dirname(3)
	44	* have const parameters.
	45	*/
	46	static char posix_basename(char path)
	47	{
	48	return basename(path);
	49	}
	50
	51	static char posix_dirname(char path)
	52	{
	53	return dirname(path);
	54	}
	55
7d1aaa68 JS	56	static int test_function(struct test_data data, char (func)(char input),
	57	const char *funcname)
	58	{
	59	int failed = 0, i;
	60	char buffer[1024];
	61	char *to;
	62
	63	for (i = 0; data[i].to; i++) {
	64	if (!data[i].from)
	65	to = func(NULL);
	66	else {
7b11a18a	67	xsnprintf(buffer, sizeof(buffer), "%s", data[i].from);
7d1aaa68 JS	68	to = func(buffer);
7d1aaa68 JS	69	}
371471ce JS	70	if (!strcmp(to, data[i].to))
	71	continue;
	72	if (!data[i].alternative)
7d1aaa68 JS	73	error("FAIL: %s(%s) => '%s' != '%s'\n",
7d1aaa68 JS	74	funcname, data[i].from, to, data[i].to);
371471ce JS	75	else if (!strcmp(to, data[i].alternative))
	76	continue;
	77	else
	78	error("FAIL: %s(%s) => '%s' != '%s', '%s'\n",
	79	funcname, data[i].from, to, data[i].to,
	80	data[i].alternative);
	81	failed = 1;
7d1aaa68 JS	82	}
	83	return failed;
	84	}
	85
	86	static struct test_data basename_data[] = {
	87	/* --- POSIX type paths --- */
	88	{ NULL, "." },
	89	{ "", "." },
	90	{ ".", "." },
	91	{ "..", ".." },
	92	{ "/", "/" },
371471ce JS	93	{ "//", "/", "//" },
	94	{ "///", "/", "//" },
	95	{ "////", "/", "//" },
7d1aaa68 JS	96	{ "usr", "usr" },
	97	{ "/usr", "usr" },
	98	{ "/usr/", "usr" },
	99	{ "/usr//", "usr" },
	100	{ "/usr/lib", "lib" },
	101	{ "usr/lib", "lib" },
	102	{ "usr/lib///", "lib" },
	103
	104	#if defined(__MINGW32__) \|\| defined(_MSC_VER)
7d1aaa68 JS	105	/* --- win32 type paths --- */
	106	{ "\\usr", "usr" },
	107	{ "\\usr\\", "usr" },
	108	{ "\\usr\\\\", "usr" },
	109	{ "\\usr\\lib", "lib" },
	110	{ "usr\\lib", "lib" },
	111	{ "usr\\lib\\\\\\", "lib" },
	112	{ "C:/usr", "usr" },
	113	{ "C:/usr", "usr" },
	114	{ "C:/usr/", "usr" },
	115	{ "C:/usr//", "usr" },
	116	{ "C:/usr/lib", "lib" },
	117	{ "C:usr/lib", "lib" },
	118	{ "C:usr/lib///", "lib" },
	119	{ "C:", "." },
	120	{ "C:a", "a" },
	121	{ "C:/", "/" },
	122	{ "C:///", "/" },
371471ce JS	123	{ "\\", "\\", "/" },
	124	{ "\\\\", "\\", "/" },
	125	{ "\\\\\\", "\\", "/" },
7d1aaa68 JS	126	#endif
	127	{ NULL, NULL }
	128	};
	129
	130	static struct test_data dirname_data[] = {
	131	/* --- POSIX type paths --- */
	132	{ NULL, "." },
	133	{ "", "." },
	134	{ ".", "." },
	135	{ "..", "." },
	136	{ "/", "/" },
371471ce JS	137	{ "//", "/", "//" },
	138	{ "///", "/", "//" },
	139	{ "////", "/", "//" },
7d1aaa68 JS	140	{ "usr", "." },
	141	{ "/usr", "/" },
	142	{ "/usr/", "/" },
	143	{ "/usr//", "/" },
	144	{ "/usr/lib", "/usr" },
	145	{ "usr/lib", "usr" },
	146	{ "usr/lib///", "usr" },
	147
	148	#if defined(__MINGW32__) \|\| defined(_MSC_VER)
7d1aaa68 JS	149	/* --- win32 type paths --- */
	150	{ "\\", "\\" },
	151	{ "\\\\", "\\\\" },
	152	{ "\\usr", "\\" },
	153	{ "\\usr\\", "\\" },
	154	{ "\\usr\\\\", "\\" },
	155	{ "\\usr\\lib", "\\usr" },
	156	{ "usr\\lib", "usr" },
	157	{ "usr\\lib\\\\\\", "usr" },
	158	{ "C:a", "C:." },
	159	{ "C:/", "C:/" },
	160	{ "C:///", "C:/" },
	161	{ "C:/usr", "C:/" },
	162	{ "C:/usr/", "C:/" },
	163	{ "C:/usr//", "C:/" },
	164	{ "C:/usr/lib", "C:/usr" },
	165	{ "C:usr/lib", "C:usr" },
	166	{ "C:usr/lib///", "C:usr" },
	167	{ "\\\\\\", "\\" },
	168	{ "\\\\\\\\", "\\" },
371471ce	169	{ "C:", "C:.", "." },
7d1aaa68 JS	170	#endif
	171	{ NULL, NULL }
	172	};
	173
dc2d9ba3 JS	174	static int is_dotgitmodules(const char *path)
	175	{
	176	return is_hfs_dotgitmodules(path) \|\| is_ntfs_dotgitmodules(path);
	177	}
	178
a62f9d1a GS	179	/*
	180	* A very simple, reproducible pseudo-random generator. Copied from
	181	* `test-genrandom.c`.
	182	*/
	183	static uint64_t my_random_value = 1234;
	184
	185	static uint64_t my_random(void)
	186	{
	187	my_random_value = my_random_value * 1103515245 + 12345;
	188	return my_random_value;
	189	}
	190
	191	/*
	192	* A fast approximation of the square root, without requiring math.h.
	193	*
	194	* It uses Newton's method to approximate the solution of 0 = x^2 - value.
	195	*/
	196	static double my_sqrt(double value)
	197	{
	198	const double epsilon = 1e-6;
	199	double x = value;
	200
	201	if (value == 0)
	202	return 0;
	203
	204	for (;;) {
	205	double delta = (value / x - x) / 2;
	206	if (delta < epsilon && delta > -epsilon)
	207	return x + delta;
	208	x += delta;
	209	}
	210	}
	211
	212	static int protect_ntfs_hfs_benchmark(int argc, const char **argv)
	213	{
	214	size_t i, j, nr, min_len = 3, max_len = 20;
	215	char **names;
	216	int repetitions = 15, file_mode = 0100644;
	217	uint64_t begin, end;
	218	double m[3][2], v[3][2];
	219	uint64_t cumul;
	220	double cumul2;
	221
	222	if (argc > 1 && !strcmp(argv[1], "--with-symlink-mode")) {
	223	file_mode = 0120000;
	224	argc--;
	225	argv++;
	226	}
	227
	228	nr = argc > 1 ? strtoul(argv[1], NULL, 0) : 1000000;
	229	ALLOC_ARRAY(names, nr);
	230
	231	if (argc > 2) {
	232	min_len = strtoul(argv[2], NULL, 0);
	233	if (argc > 3)
	234	max_len = strtoul(argv[3], NULL, 0);
	235	if (min_len > max_len)
	236	die("min_len > max_len");
	237	}
	238
	239	for (i = 0; i < nr; i++) {
	240	size_t len = min_len + (my_random() % (max_len + 1 - min_len));
	241
	242	names[i] = xmallocz(len);
243	while (len > 0)
244	names[i][--len] = (char)(' ' + (my_random() % ('\x7f' - ' ')));
245	}
246
247	for (protect_ntfs = 0; protect_ntfs < 2; protect_ntfs++)
248	for (protect_hfs = 0; protect_hfs < 2; protect_hfs++) {
249	cumul = 0;
250	cumul2 = 0;
251	for (i = 0; i < repetitions; i++) {
252	begin = getnanotime();
253	for (j = 0; j < nr; j++)
254	verify_path(names[j], file_mode);
255	end = getnanotime();
256	printf("protect_ntfs = %d, protect_hfs = %d: %lfms\n", protect_ntfs, protect_hfs, (end-begin) / (double)1e6);
257	cumul += end - begin;
258	cumul2 += (end - begin) * (end - begin);
259	}
260	m[protect_ntfs][protect_hfs] = cumul / (double)repetitions;
261	v[protect_ntfs][protect_hfs] = my_sqrt(cumul2 / (double)repetitions - m[protect_ntfs][protect_hfs] * m[protect_ntfs][protect_hfs]);
262	printf("mean: %lfms, stddev: %lfms\n", m[protect_ntfs][protect_hfs] / (double)1e6, v[protect_ntfs][protect_hfs] / (double)1e6);
263	}
264
265	for (protect_ntfs = 0; protect_ntfs < 2; protect_ntfs++)
266	for (protect_hfs = 0; protect_hfs < 2; protect_hfs++)
267	printf("ntfs=%d/hfs=%d: %lf%% slower\n", protect_ntfs, protect_hfs, (m[protect_ntfs][protect_hfs] - m[0][0]) * 100 / m[0][0]);
268
269	return 0;
270	}
271
3f2e2297	272	int cmd_main(int argc, const char **argv)
ae299be0	273	{
f42302b4	274	if (argc == 3 && !strcmp(argv[1], "normalize_path_copy")) {
62f17513	275	char *buf = xmallocz(strlen(argv[2]));
f42302b4 JS	276	int rv = normalize_path_copy(buf, argv[2]);
	277	if (rv)
	278	buf = "++failed++";
ae299be0	279	puts(buf);
2cd85c40	280	return 0;
ae299be0 DR	281	}
ae299be0 DR	282
e2a57aac	283	if (argc >= 2 && !strcmp(argv[1], "real_path")) {
d553e737	284	while (argc > 2) {
e2a57aac	285	puts(real_path(argv[2]));
d553e737 DR	286	argc--;
	287	argv++;
	288	}
2cd85c40	289	return 0;
d553e737 DR	290	}
d553e737 DR	291
87a246e1 MH	292	if (argc >= 2 && !strcmp(argv[1], "absolute_path")) {
	293	while (argc > 2) {
	294	puts(absolute_path(argv[2]));
	295	argc--;
	296	argv++;
	297	}
	298	return 0;
	299	}
	300
0454dd93	301	if (argc == 4 && !strcmp(argv[1], "longest_ancestor_length")) {
31171d9e MH	302	int len;
31171d9e MH	303	struct string_list ceiling_dirs = STRING_LIST_INIT_DUP;
9e2326c7	304	char *path = xstrdup(argv[2]);
31171d9e	305
9e2326c7 MH	306	/*
	307	* We have to normalize the arguments because under
	308	* Windows, bash mangles arguments that look like
	309	* absolute POSIX paths or colon-separate lists of
	310	* absolute POSIX paths into DOS paths (e.g.,
	311	* "/foo:/foo/bar" might be converted to
	312	* "D:\Src\msysgit\foo;D:\Src\msysgit\foo\bar"),
	313	* whereas longest_ancestor_length() requires paths
	314	* that use forward slashes.
	315	*/
	316	if (normalize_path_copy(path, path))
	317	die("Path \"%s\" could not be normalized", argv[2]);
31171d9e	318	string_list_split(&ceiling_dirs, argv[3], PATH_SEP, -1);
9e2326c7 MH	319	filter_string_list(&ceiling_dirs, 0,
	320	normalize_ceiling_entry, NULL);
	321	len = longest_ancestor_length(path, &ceiling_dirs);
31171d9e	322	string_list_clear(&ceiling_dirs, 0);
9e2326c7	323	free(path);
0454dd93	324	printf("%d\n", len);
2cd85c40	325	return 0;
0454dd93 DR	326	}
0454dd93 DR	327
9e813723	328	if (argc >= 4 && !strcmp(argv[1], "prefix_path")) {
3f2e2297	329	const char *prefix = argv[2];
9e813723 MH	330	int prefix_len = strlen(prefix);
	331	int nongit_ok;
	332	setup_git_directory_gently(&nongit_ok);
	333	while (argc > 3) {
	334	puts(prefix_path(prefix, prefix_len, argv[3]));
	335	argc--;
	336	argv++;
	337	}
	338	return 0;
	339	}
	340
4fcc86b0 JS	341	if (argc == 4 && !strcmp(argv[1], "strip_path_suffix")) {
	342	char *prefix = strip_path_suffix(argv[2], argv[3]);
	343	printf("%s\n", prefix ? prefix : "(null)");
	344	return 0;
	345	}
	346
7ffd18fc	347	if (argc == 3 && !strcmp(argv[1], "print_path")) {
abd4284b JX	348	puts(argv[2]);
	349	return 0;
	350	}
	351
203439b2	352	if (argc == 4 && !strcmp(argv[1], "relative_path")) {
e02ca72f	353	struct strbuf sb = STRBUF_INIT;
203439b2 JX	354	const char in, prefix, *rel;
	355	normalize_argv_string(&in, argv[2]);
	356	normalize_argv_string(&prefix, argv[3]);
e02ca72f	357	rel = relative_path(in, prefix, &sb);
203439b2 JX	358	if (!rel)
	359	puts("(null)");
	360	else
	361	puts(strlen(rel) > 0 ? rel : "(empty)");
e02ca72f	362	strbuf_release(&sb);
203439b2 JX	363	return 0;
	364	}
	365
7d1aaa68	366	if (argc == 2 && !strcmp(argv[1], "basename"))
29c2eda8	367	return test_function(basename_data, posix_basename, argv[1]);
7d1aaa68 JS	368
7d1aaa68 JS	369	if (argc == 2 && !strcmp(argv[1], "dirname"))
29c2eda8	370	return test_function(dirname_data, posix_dirname, argv[1]);
7d1aaa68	371
dc2d9ba3 JS	372	if (argc > 2 && !strcmp(argv[1], "is_dotgitmodules")) {
	373	int res = 0, expect = 1, i;
	374	for (i = 2; i < argc; i++)
	375	if (!strcmp("--not", argv[i]))
	376	expect = !expect;
	377	else if (expect != is_dotgitmodules(argv[i]))
	378	res = error("'%s' is %s.gitmodules", argv[i],
	379	expect ? "not " : "");
	380	else
	381	fprintf(stderr, "ok: '%s' is %s.gitmodules\n",
	382	argv[i], expect ? "" : "not ");
	383	return !!res;
	384	}
	385
a62f9d1a GS	386	if (argc > 1 && !strcmp(argv[1], "protect_ntfs_hfs"))
	387	return !!protect_ntfs_hfs_benchmark(argc - 1, argv + 1);
	388
2cd85c40 JS	389	fprintf(stderr, "%s: unknown function name: %s\n", argv[0],
	390	argv[1] ? argv[1] : "(there was none)");
	391	return 1;
ae299be0	392	}