Show usage string for 'git commit-tree -h'
[gitweb.git] / dir.c
diff --git a/dir.c b/dir.c
index 0c8553b27c80ca649fa5b8c864583fb75be6fabe..d0999ba055367c31571b251fb34bb46ed6c7051d 100644 (file)
--- a/dir.c
+++ b/dir.c
@@ -14,10 +14,9 @@ struct path_simplify {
        const char *path;
 };
 
-static int read_directory_recursive(struct dir_struct *dir,
-       const char *path, const char *base, int baselen,
+static int read_directory_recursive(struct dir_struct *dir, const char *path, int len,
        int check_only, const struct path_simplify *simplify);
-static int get_dtype(struct dirent *de, const char *path);
+static int get_dtype(struct dirent *de, const char *path, int len);
 
 static int common_prefix(const char **pathspec)
 {
@@ -54,23 +53,22 @@ static int common_prefix(const char **pathspec)
 
 int fill_directory(struct dir_struct *dir, const char **pathspec)
 {
-       const char *path, *base;
-       int baselen;
+       const char *path;
+       int len;
 
        /*
         * Calculate common prefix for the pathspec, and
         * use that to optimize the directory walk
         */
-       baselen = common_prefix(pathspec);
+       len = common_prefix(pathspec);
        path = "";
-       base = "";
 
-       if (baselen)
-               path = base = xmemdupz(*pathspec, baselen);
+       if (len)
+               path = xmemdupz(*pathspec, len);
 
        /* Read the directory and prune it */
-       read_directory(dir, path, base, baselen, pathspec);
-       return baselen;
+       read_directory(dir, path, len, pathspec);
+       return len;
 }
 
 /*
@@ -328,7 +326,7 @@ static int excluded_1(const char *pathname,
 
                        if (x->flags & EXC_FLAG_MUSTBEDIR) {
                                if (*dtype == DT_UNKNOWN)
-                                       *dtype = get_dtype(NULL, pathname);
+                                       *dtype = get_dtype(NULL, pathname, pathlen);
                                if (*dtype != DT_DIR)
                                        continue;
                        }
@@ -526,7 +524,7 @@ static enum directory_treatment treat_directory(struct dir_struct *dir,
        /* This is the "show_other_directories" case */
        if (!(dir->flags & DIR_HIDE_EMPTY_DIRECTORIES))
                return show_directory;
-       if (!read_directory_recursive(dir, dirname, dirname, len, 1, simplify))
+       if (!read_directory_recursive(dir, dirname, len, 1, simplify))
                return ignore_directory;
        return show_directory;
 }
@@ -568,11 +566,52 @@ static int in_pathspec(const char *path, int len, const struct path_simplify *si
        return 0;
 }
 
-static int get_dtype(struct dirent *de, const char *path)
+static int get_index_dtype(const char *path, int len)
+{
+       int pos;
+       struct cache_entry *ce;
+
+       ce = cache_name_exists(path, len, 0);
+       if (ce) {
+               if (!ce_uptodate(ce))
+                       return DT_UNKNOWN;
+               if (S_ISGITLINK(ce->ce_mode))
+                       return DT_DIR;
+               /*
+                * Nobody actually cares about the
+                * difference between DT_LNK and DT_REG
+                */
+               return DT_REG;
+       }
+
+       /* Try to look it up as a directory */
+       pos = cache_name_pos(path, len);
+       if (pos >= 0)
+               return DT_UNKNOWN;
+       pos = -pos-1;
+       while (pos < active_nr) {
+               ce = active_cache[pos++];
+               if (strncmp(ce->name, path, len))
+                       break;
+               if (ce->name[len] > '/')
+                       break;
+               if (ce->name[len] < '/')
+                       continue;
+               if (!ce_uptodate(ce))
+                       break;  /* continue? */
+               return DT_DIR;
+       }
+       return DT_UNKNOWN;
+}
+
+static int get_dtype(struct dirent *de, const char *path, int len)
 {
        int dtype = de ? DTYPE(de) : DT_UNKNOWN;
        struct stat st;
 
+       if (dtype != DT_UNKNOWN)
+               return dtype;
+       dtype = get_index_dtype(path, len);
        if (dtype != DT_UNKNOWN)
                return dtype;
        if (lstat(path, &st))
@@ -595,15 +634,15 @@ static int get_dtype(struct dirent *de, const char *path)
  * Also, we ignore the name ".git" (even if it is not a directory).
  * That likely will not change.
  */
-static int read_directory_recursive(struct dir_struct *dir, const char *path, const char *base, int baselen, int check_only, const struct path_simplify *simplify)
+static int read_directory_recursive(struct dir_struct *dir, const char *base, int baselen, int check_only, const struct path_simplify *simplify)
 {
-       DIR *fdir = opendir(*path ? path : ".");
+       DIR *fdir = opendir(*base ? base : ".");
        int contents = 0;
 
        if (fdir) {
                struct dirent *de;
-               char fullname[PATH_MAX + 1];
-               memcpy(fullname, base, baselen);
+               char path[PATH_MAX + 1];
+               memcpy(path, base, baselen);
 
                while ((de = readdir(fdir)) != NULL) {
                        int len, dtype;
@@ -614,17 +653,18 @@ static int read_directory_recursive(struct dir_struct *dir, const char *path, co
                                continue;
                        len = strlen(de->d_name);
                        /* Ignore overly long pathnames! */
-                       if (len + baselen + 8 > sizeof(fullname))
+                       if (len + baselen + 8 > sizeof(path))
                                continue;
-                       memcpy(fullname + baselen, de->d_name, len+1);
-                       if (simplify_away(fullname, baselen + len, simplify))
+                       memcpy(path + baselen, de->d_name, len+1);
+                       len = baselen + len;
+                       if (simplify_away(path, len, simplify))
                                continue;
 
                        dtype = DTYPE(de);
-                       exclude = excluded(dir, fullname, &dtype);
+                       exclude = excluded(dir, path, &dtype);
                        if (exclude && (dir->flags & DIR_COLLECT_IGNORED)
-                           && in_pathspec(fullname, baselen + len, simplify))
-                               dir_add_ignored(dir, fullname, baselen + len);
+                           && in_pathspec(path, len, simplify))
+                               dir_add_ignored(dir, path,len);
 
                        /*
                         * Excluded? If we don't explicitly want to show
@@ -634,7 +674,7 @@ static int read_directory_recursive(struct dir_struct *dir, const char *path, co
                                continue;
 
                        if (dtype == DT_UNKNOWN)
-                               dtype = get_dtype(de, fullname);
+                               dtype = get_dtype(de, path, len);
 
                        /*
                         * Do we want to see just the ignored files?
@@ -651,9 +691,9 @@ static int read_directory_recursive(struct dir_struct *dir, const char *path, co
                        default:
                                continue;
                        case DT_DIR:
-                               memcpy(fullname + baselen + len, "/", 2);
+                               memcpy(path + len, "/", 2);
                                len++;
-                               switch (treat_directory(dir, fullname, baselen + len, simplify)) {
+                               switch (treat_directory(dir, path, len, simplify)) {
                                case show_directory:
                                        if (exclude != !!(dir->flags
                                                        & DIR_SHOW_IGNORED))
@@ -661,7 +701,7 @@ static int read_directory_recursive(struct dir_struct *dir, const char *path, co
                                        break;
                                case recurse_into_directory:
                                        contents += read_directory_recursive(dir,
-                                               fullname, fullname, baselen + len, 0, simplify);
+                                               path, len, 0, simplify);
                                        continue;
                                case ignore_directory:
                                        continue;
@@ -675,7 +715,7 @@ static int read_directory_recursive(struct dir_struct *dir, const char *path, co
                        if (check_only)
                                goto exit_early;
                        else
-                               dir_add_name(dir, fullname, baselen + len);
+                               dir_add_name(dir, path, len);
                }
 exit_early:
                closedir(fdir);
@@ -738,15 +778,15 @@ static void free_simplify(struct path_simplify *simplify)
        free(simplify);
 }
 
-int read_directory(struct dir_struct *dir, const char *path, const char *base, int baselen, const char **pathspec)
+int read_directory(struct dir_struct *dir, const char *path, int len, const char **pathspec)
 {
        struct path_simplify *simplify;
 
-       if (has_symlink_leading_path(path, strlen(path)))
+       if (has_symlink_leading_path(path, len))
                return dir->nr;
 
        simplify = create_simplify(pathspec);
-       read_directory_recursive(dir, path, base, baselen, 0, simplify);
+       read_directory_recursive(dir, path, len, 0, simplify);
        free_simplify(simplify);
        qsort(dir->entries, dir->nr, sizeof(struct dir_entry *), cmp_name);
        qsort(dir->ignored, dir->ignored_nr, sizeof(struct dir_entry *), cmp_name);
@@ -821,12 +861,20 @@ int is_empty_dir(const char *path)
        return ret;
 }
 
-int remove_dir_recursively(struct strbuf *path, int only_empty)
+int remove_dir_recursively(struct strbuf *path, int flag)
 {
-       DIR *dir = opendir(path->buf);
+       DIR *dir;
        struct dirent *e;
        int ret = 0, original_len = path->len, len;
+       int only_empty = (flag & REMOVE_DIR_EMPTY_ONLY);
+       unsigned char submodule_head[20];
+
+       if ((flag & REMOVE_DIR_KEEP_NESTED_GIT) &&
+           !resolve_gitlink_ref(path->buf, "HEAD", submodule_head))
+               /* Do not descend and nuke a nested git work tree. */
+               return 0;
 
+       dir = opendir(path->buf);
        if (!dir)
                return -1;
        if (path->buf[original_len - 1] != '/')