static int sanitary_path_copy(char *dst, const char *src)
{
- char *dst0 = dst;
+ char *dst0;
- if (*src == '/') {
+ if (has_dos_drive_prefix(src)) {
+ *dst++ = *src++;
+ *dst++ = *src++;
+ }
+ dst0 = dst;
+
+ if (is_dir_sep(*src)) {
*dst++ = '/';
- while (*src == '/')
+ while (is_dir_sep(*src))
src++;
}
* (4) "../" -- strip one, eat slash and continue.
*/
if (c == '.') {
- switch (src[1]) {
- case '\0':
+ if (!src[1]) {
/* (1) */
src++;
- break;
- case '/':
+ } else if (is_dir_sep(src[1])) {
/* (2) */
src += 2;
- while (*src == '/')
+ while (is_dir_sep(*src))
src++;
continue;
- case '.':
- switch (src[2]) {
- case '\0':
+ } else if (src[1] == '.') {
+ if (!src[2]) {
/* (3) */
src += 2;
goto up_one;
- case '/':
+ } else if (is_dir_sep(src[2])) {
/* (4) */
src += 3;
- while (*src == '/')
+ while (is_dir_sep(*src))
src++;
goto up_one;
}
}
/* copy up to the next '/', and eat all '/' */
- while ((c = *src++) != '\0' && c != '/')
+ while ((c = *src++) != '\0' && !is_dir_sep(c))
*dst++ = c;
- if (c == '/') {
- *dst++ = c;
- while (c == '/')
+ if (is_dir_sep(c)) {
+ *dst++ = '/';
+ while (is_dir_sep(c))
c = *src++;
src--;
} else if (!c)
if (dst <= dst0)
break;
c = *dst--;
- if (c == '/') {
+ if (c == '/') { /* MinGW: cannot be '\\' anymore */
dst += 2;
break;
}
const char *prefix_filename(const char *pfx, int pfx_len, const char *arg)
{
static char path[PATH_MAX];
+#ifndef __MINGW32__
if (!pfx || !*pfx || is_absolute_path(arg))
return arg;
memcpy(path, pfx, pfx_len);
strcpy(path + pfx_len, arg);
+#else
+ char *p;
+ /* don't add prefix to absolute paths, but still replace '\' by '/' */
+ if (is_absolute_path(arg))
+ pfx_len = 0;
+ else
+ memcpy(path, pfx, pfx_len);
+ strcpy(path + pfx_len, arg);
+ for (p = path + pfx_len; *p; p++)
+ if (*p == '\\')
+ *p = '/';
+#endif
return path;
}
work_tree = get_git_work_tree();
git_dir = get_git_dir();
if (!is_absolute_path(git_dir))
- set_git_dir(make_absolute_path(git_dir));
+ git_dir = make_absolute_path(git_dir);
if (!work_tree || chdir(work_tree))
die("This operation must be run in a work tree");
+ set_git_dir(make_relative_path(git_dir, work_tree));
initialized = 1;
}
static int check_repository_format_gently(int *nongit_ok)
{
- git_config(check_repository_format_version);
+ git_config(check_repository_format_version, NULL);
if (GIT_REPO_VERSION < repository_format_version) {
if (!nongit_ok)
die ("Expected git repo version <= %d, found %d",
return 0;
}
+/*
+ * Try to read the location of the git directory from the .git file,
+ * return path to git directory if found.
+ */
+const char *read_gitfile_gently(const char *path)
+{
+ char *buf;
+ struct stat st;
+ int fd;
+ size_t len;
+
+ if (stat(path, &st))
+ return NULL;
+ if (!S_ISREG(st.st_mode))
+ return NULL;
+ fd = open(path, O_RDONLY);
+ if (fd < 0)
+ die("Error opening %s: %s", path, strerror(errno));
+ buf = xmalloc(st.st_size + 1);
+ len = read_in_full(fd, buf, st.st_size);
+ close(fd);
+ if (len != st.st_size)
+ die("Error reading %s", path);
+ buf[len] = '\0';
+ if (prefixcmp(buf, "gitdir: "))
+ die("Invalid gitfile format: %s", path);
+ while (buf[len - 1] == '\n' || buf[len - 1] == '\r')
+ len--;
+ if (len < 9)
+ die("No path in gitfile: %s", path);
+ buf[len] = '\0';
+ if (!is_git_directory(buf + 8))
+ die("Not a git repository: %s", buf + 8);
+ path = make_absolute_path(buf + 8);
+ free(buf);
+ return path;
+}
+
/*
* 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;
- int len, offset;
+ const char *gitfile_dir;
+ int len, offset, ceil_offset;
/*
* Let's assume that we are in a git repository.
if (!getcwd(cwd, sizeof(cwd)-1))
die("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/
*/
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(".")) {
check_repository_format_gently(nongit_ok);
return NULL;
}
- chdir("..");
- do {
- if (!offset) {
- if (nongit_ok) {
- if (chdir(cwd))
- die("Cannot come back to cwd");
- *nongit_ok = 1;
- return NULL;
- }
- die("Not a git repository");
+ while (--offset > ceil_offset && cwd[offset] != '/');
+ if (offset <= ceil_offset) {
+ if (nongit_ok) {
+ if (chdir(cwd))
+ die("Cannot come back to cwd");
+ *nongit_ok = 1;
+ return NULL;
}
- } while (cwd[--offset] != '/');
+ die("Not a git repository");
+ }
+ chdir("..");
}
inside_git_dir = 0;
return i & 0666;
}
-int check_repository_format_version(const char *var, const char *value)
+int check_repository_format_version(const char *var, const char *value, void *cb)
{
if (strcmp(var, "core.repositoryformatversion") == 0)
repository_format_version = git_config_int(var, value);
if (retval && chdir(retval))
die ("Could not jump back into original cwd");
rel = get_relative_cwd(buffer, PATH_MAX, get_git_work_tree());
+ if (rel && *rel && chdir(get_git_work_tree()))
+ die ("Could not jump to working directory");
return rel && *rel ? strcat(rel, "/") : NULL;
}