int main(int argc, char **argv) { if (argc == 3 && !strcmp(argv[1], "normalize_path_copy")) { char *buf = xmalloc(PATH_MAX + 1); int rv = normalize_path_copy(buf, argv[2]); if (rv) buf = "++failed++"; puts(buf); return 0; } if (argc >= 2 && !strcmp(argv[1], "make_absolute_path")) { while (argc > 2) { puts(make_absolute_path(argv[2])); argc--; argv++; } return 0; } if (argc == 4 && !strcmp(argv[1], "longest_ancestor_length")) { int len = longest_ancestor_length(argv[2], argv[3]); printf("%d\n", len); return 0; } fprintf(stderr, "%s: unknown function name: %s\n", argv[0], argv[1] ? argv[1] : "(there was none)"); return 1; }
/* * We cannot decide in this function whether we are in the work tree or * not, since the config can only be read _after_ this function was called. */ const char *setup_git_directory_gently(int *nongit_ok) { const char *work_tree_env = getenv(GIT_WORK_TREE_ENVIRONMENT); const char *env_ceiling_dirs = getenv(CEILING_DIRECTORIES_ENVIRONMENT); static char cwd[PATH_MAX+1]; const char *gitdirenv; const char *gitfile_dir; int len, offset, ceil_offset; /* * Let's assume that we are in a git repository. * If it turns out later that we are somewhere else, the value will be * updated accordingly. */ if (nongit_ok) *nongit_ok = 0; /* * If GIT_DIR is set explicitly, we're not going * to do any discovery, but we still do repository * validation. */ gitdirenv = getenv(GIT_DIR_ENVIRONMENT); if (gitdirenv) { if (PATH_MAX - 40 < strlen(gitdirenv)) die("'$%s' too big", GIT_DIR_ENVIRONMENT); if (is_git_directory(gitdirenv)) { static char buffer[1024 + 1]; const char *retval; if (!work_tree_env) { retval = set_work_tree(gitdirenv); /* config may override worktree */ if (check_repository_format_gently(nongit_ok)) return NULL; return retval; } if (check_repository_format_gently(nongit_ok)) return NULL; retval = get_relative_cwd(buffer, sizeof(buffer) - 1, get_git_work_tree()); if (!retval || !*retval) return NULL; set_git_dir(make_absolute_path(gitdirenv)); if (chdir(work_tree_env) < 0) die_errno ("Could not chdir to '%s'", work_tree_env); strcat(buffer, "/"); return retval; } if (nongit_ok) { *nongit_ok = 1; return NULL; } die("Not a git repository: '%s'", gitdirenv); } if (!getcwd(cwd, sizeof(cwd)-1)) die_errno("Unable to read current working directory"); ceil_offset = longest_ancestor_length(cwd, env_ceiling_dirs); if (ceil_offset < 0 && has_dos_drive_prefix(cwd)) ceil_offset = 1; /* * Test in the following order (relative to the cwd): * - .git (file containing "gitdir: <path>") * - .git/ * - ./ (bare) * - ../.git * - ../.git/ * - ../ (bare) * - ../../.git/ * etc. */ offset = len = strlen(cwd); for (;;) { gitfile_dir = read_gitfile_gently(DEFAULT_GIT_DIR_ENVIRONMENT); if (gitfile_dir) { if (set_git_dir(gitfile_dir)) die("Repository setup failed"); break; } if (is_git_directory(DEFAULT_GIT_DIR_ENVIRONMENT)) break; if (is_git_directory(".")) { inside_git_dir = 1; if (!work_tree_env) inside_work_tree = 0; if (offset != len) { cwd[offset] = '\0'; setenv(GIT_DIR_ENVIRONMENT, cwd, 1); } else setenv(GIT_DIR_ENVIRONMENT, ".", 1); check_repository_format_gently(nongit_ok); return NULL; } while (--offset > ceil_offset && cwd[offset] != '/'); if (offset <= ceil_offset) { if (nongit_ok) { if (chdir(cwd)) die_errno("Cannot come back to cwd"); *nongit_ok = 1; return NULL; } die("Not a git repository (or any of the parent directories): %s", DEFAULT_GIT_DIR_ENVIRONMENT); } if (chdir("..")) die_errno("Cannot change to '%s/..'", cwd); } inside_git_dir = 0; if (!work_tree_env) inside_work_tree = 1; git_work_tree_cfg = xstrndup(cwd, offset); if (check_repository_format_gently(nongit_ok)) return NULL; if (offset == len) return NULL; /* Make "offset" point to past the '/', and add a '/' at the end */ offset++; cwd[len++] = '/'; cwd[len] = 0; return cwd + offset; }
/* * We cannot decide in this function whether we are in the work tree or * not, since the config can only be read _after_ this function was called. */ static const char *setup_git_directory_gently_1(int *nongit_ok) { const char *env_ceiling_dirs = getenv(CEILING_DIRECTORIES_ENVIRONMENT); struct string_list ceiling_dirs = STRING_LIST_INIT_DUP; static struct strbuf cwd = STRBUF_INIT; const char *gitdirenv, *ret; char *gitfile; int offset, offset_parent, ceil_offset = -1; dev_t current_device = 0; int one_filesystem = 1; /* * We may have read an incomplete configuration before * setting-up the git directory. If so, clear the cache so * that the next queries to the configuration reload complete * configuration (including the per-repo config file that we * ignored previously). */ git_config_clear(); /* * Let's assume that we are in a git repository. * If it turns out later that we are somewhere else, the value will be * updated accordingly. */ if (nongit_ok) *nongit_ok = 0; if (strbuf_getcwd(&cwd)) die_errno("Unable to read current working directory"); offset = cwd.len; /* * If GIT_DIR is set explicitly, we're not going * to do any discovery, but we still do repository * validation. */ gitdirenv = getenv(GIT_DIR_ENVIRONMENT); if (gitdirenv) return setup_explicit_git_dir(gitdirenv, &cwd, nongit_ok); if (env_ceiling_dirs) { int empty_entry_found = 0; string_list_split(&ceiling_dirs, env_ceiling_dirs, PATH_SEP, -1); filter_string_list(&ceiling_dirs, 0, canonicalize_ceiling_entry, &empty_entry_found); ceil_offset = longest_ancestor_length(cwd.buf, &ceiling_dirs); string_list_clear(&ceiling_dirs, 0); } if (ceil_offset < 0 && has_dos_drive_prefix(cwd.buf)) ceil_offset = 1; /* * Test in the following order (relative to the cwd): * - .git (file containing "gitdir: <path>") * - .git/ * - ./ (bare) * - ../.git * - ../.git/ * - ../ (bare) * - ../../.git/ * etc. */ one_filesystem = !git_env_bool("GIT_DISCOVERY_ACROSS_FILESYSTEM", 0); if (one_filesystem) current_device = get_device_or_die(".", NULL, 0); for (;;) { gitfile = (char*)read_gitfile(DEFAULT_GIT_DIR_ENVIRONMENT); if (gitfile) gitdirenv = gitfile = xstrdup(gitfile); else { if (is_git_directory(DEFAULT_GIT_DIR_ENVIRONMENT)) gitdirenv = DEFAULT_GIT_DIR_ENVIRONMENT; } if (gitdirenv) { ret = setup_discovered_git_dir(gitdirenv, &cwd, offset, nongit_ok); free(gitfile); return ret; } free(gitfile); if (is_git_directory(".")) return setup_bare_git_dir(&cwd, offset, nongit_ok); offset_parent = offset; while (--offset_parent > ceil_offset && cwd.buf[offset_parent] != '/'); if (offset_parent <= ceil_offset) return setup_nongit(cwd.buf, nongit_ok); if (one_filesystem) { dev_t parent_device = get_device_or_die("..", cwd.buf, offset); if (parent_device != current_device) { if (nongit_ok) { if (chdir(cwd.buf)) die_errno("Cannot come back to cwd"); *nongit_ok = 1; return NULL; } strbuf_setlen(&cwd, offset); die("Not a git repository (or any parent up to mount point %s)\n" "Stopping at filesystem boundary (GIT_DISCOVERY_ACROSS_FILESYSTEM not set).", cwd.buf); } } if (chdir("..")) { strbuf_setlen(&cwd, offset); die_errno("Cannot change to '%s/..'", cwd.buf); } offset = offset_parent; } }
int main(int argc, char **argv) { if (argc == 3 && !strcmp(argv[1], "normalize_path_copy")) { char *buf = xmalloc(PATH_MAX + 1); 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")) { 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], "mingw_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; } fprintf(stderr, "%s: unknown function name: %s\n", argv[0], argv[1] ? argv[1] : "(there was none)"); return 1; }
/* * We cannot decide in this function whether we are in the work tree or * not, since the config can only be read _after_ this function was called. */ static const char *setup_git_directory_gently_1(int *nongit_ok) { const char *env_ceiling_dirs = getenv(CEILING_DIRECTORIES_ENVIRONMENT); static char cwd[PATH_MAX+1]; const char *gitdirenv, *ret; char *gitfile; int len, offset, ceil_offset; dev_t current_device = 0; int one_filesystem = 1; /* * Let's assume that we are in a git repository. * If it turns out later that we are somewhere else, the value will be * updated accordingly. */ if (nongit_ok) *nongit_ok = 0; if (!getcwd(cwd, sizeof(cwd)-1)) die_errno("Unable to read current working directory"); offset = len = strlen(cwd); /* * If GIT_DIR is set explicitly, we're not going * to do any discovery, but we still do repository * validation. */ gitdirenv = getenv(GIT_DIR_ENVIRONMENT); if (gitdirenv) return setup_explicit_git_dir(gitdirenv, cwd, len, nongit_ok); ceil_offset = longest_ancestor_length(cwd, env_ceiling_dirs); if (ceil_offset < 0 && has_dos_drive_prefix(cwd)) ceil_offset = 1; /* * Test in the following order (relative to the cwd): * - .git (file containing "gitdir: <path>") * - .git/ * - ./ (bare) * - ../.git * - ../.git/ * - ../ (bare) * - ../../.git/ * etc. */ one_filesystem = !git_env_bool("GIT_DISCOVERY_ACROSS_FILESYSTEM", 0); if (one_filesystem) current_device = get_device_or_die(".", NULL); for (;;) { gitfile = (char*)read_gitfile_gently(DEFAULT_GIT_DIR_ENVIRONMENT); if (gitfile) gitdirenv = gitfile = xstrdup(gitfile); else { if (is_git_directory(DEFAULT_GIT_DIR_ENVIRONMENT)) gitdirenv = DEFAULT_GIT_DIR_ENVIRONMENT; } if (gitdirenv) { ret = setup_discovered_git_dir(gitdirenv, cwd, offset, len, nongit_ok); free(gitfile); return ret; } free(gitfile); if (is_git_directory(".")) return setup_bare_git_dir(cwd, offset, len, nongit_ok); while (--offset > ceil_offset && cwd[offset] != '/'); if (offset <= ceil_offset) return setup_nongit(cwd, nongit_ok); if (one_filesystem) { dev_t parent_device = get_device_or_die("..", cwd); if (parent_device != current_device) { if (nongit_ok) { if (chdir(cwd)) die_errno("Cannot come back to cwd"); *nongit_ok = 1; return NULL; } cwd[offset] = '\0'; die("Not a git repository (or any parent up to mount parent %s)\n" "Stopping at filesystem boundary (GIT_DISCOVERY_ACROSS_FILESYSTEM not set).", cwd); } } if (chdir("..")) { cwd[offset] = '\0'; die_errno("Cannot change to '%s/..'", cwd); } } }