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-rw-r--r--t/helper/test-path-utils.c477
1 files changed, 477 insertions, 0 deletions
diff --git a/t/helper/test-path-utils.c b/t/helper/test-path-utils.c
new file mode 100644
index 0000000000..313a153209
--- /dev/null
+++ b/t/helper/test-path-utils.c
@@ -0,0 +1,477 @@
+#include "test-tool.h"
+#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);
+}
+
+static int cmp_by_st_size(const void *a, const void *b)
+{
+ intptr_t x = (intptr_t)((struct string_list_item *)a)->util;
+ intptr_t y = (intptr_t)((struct string_list_item *)b)->util;
+
+ return x > y ? -1 : (x < y ? +1 : 0);
+}
+
+/*
+ * 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__path_utils(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")) {
+ struct strbuf realpath = STRBUF_INIT;
+ while (argc > 2) {
+ strbuf_realpath(&realpath, argv[2], 1);
+ puts(realpath.buf);
+ argc--;
+ argv++;
+ }
+ strbuf_release(&realpath);
+ 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 > 2 && !strcmp(argv[1], "file-size")) {
+ int res = 0, i;
+ struct stat st;
+
+ for (i = 2; i < argc; i++)
+ if (stat(argv[i], &st))
+ res = error_errno("Cannot stat '%s'", argv[i]);
+ else
+ printf("%"PRIuMAX"\n", (uintmax_t)st.st_size);
+ return !!res;
+ }
+
+ if (argc == 4 && !strcmp(argv[1], "skip-n-bytes")) {
+ int fd = open(argv[2], O_RDONLY), offset = atoi(argv[3]);
+ char buffer[65536];
+
+ if (fd < 0)
+ die_errno("could not open '%s'", argv[2]);
+ if (lseek(fd, offset, SEEK_SET) < 0)
+ die_errno("could not skip %d bytes", offset);
+ for (;;) {
+ ssize_t count = read(fd, buffer, sizeof(buffer));
+ if (count < 0)
+ die_errno("could not read '%s'", argv[2]);
+ if (!count)
+ break;
+ if (write(1, buffer, count) < 0)
+ die_errno("could not write to stdout");
+ }
+ close(fd);
+ return 0;
+ }
+
+ if (argc > 5 && !strcmp(argv[1], "slice-tests")) {
+ int res = 0;
+ long offset, stride, i;
+ struct string_list list = STRING_LIST_INIT_NODUP;
+ struct stat st;
+
+ offset = strtol(argv[2], NULL, 10);
+ stride = strtol(argv[3], NULL, 10);
+ if (stride < 1)
+ stride = 1;
+ for (i = 4; i < argc; i++)
+ if (stat(argv[i], &st))
+ res = error_errno("Cannot stat '%s'", argv[i]);
+ else
+ string_list_append(&list, argv[i])->util =
+ (void *)(intptr_t)st.st_size;
+ QSORT(list.items, list.nr, cmp_by_st_size);
+ for (i = offset; i < list.nr; i+= stride)
+ printf("%s\n", list.items[i].string);
+
+ return !!res;
+ }
+
+ if (argc > 1 && !strcmp(argv[1], "protect_ntfs_hfs"))
+ return !!protect_ntfs_hfs_benchmark(argc - 1, argv + 1);
+
+ if (argc > 1 && !strcmp(argv[1], "is_valid_path")) {
+ int res = 0, expect = 1, i;
+
+ for (i = 2; i < argc; i++)
+ if (!strcmp("--not", argv[i]))
+ expect = 0;
+ else if (expect != is_valid_path(argv[i]))
+ res = error("'%s' is%s a valid path",
+ argv[i], expect ? " not" : "");
+ else
+ fprintf(stderr,
+ "'%s' is%s a valid path\n",
+ argv[i], expect ? "" : " not");
+
+ return !!res;
+ }
+
+ fprintf(stderr, "%s: unknown function name: %s\n", argv[0],
+ argv[1] ? argv[1] : "(there was none)");
+ return 1;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-15 18:17:53 +0000