git-tar-tree: Move code for git-archive --format=tar to archive-tar.c

diff --git a/dir.c b/dir.c
index d778ecd8908d7a32519cc9c31d8333de3fad0ae6..e2f472ba7f5d3e5146f110dd3eaae9e5494854e2 100644 (file)
--- a/dir.c
+++ b/dir.c
@@ -101,8 +101,8 @@ void add_exclude(const char *string, const char *base,
        x->baselen = baselen;
        if (which->nr == which->alloc) {
                which->alloc = alloc_nr(which->alloc);
-               which->excludes = realloc(which->excludes,
-                                         which->alloc * sizeof(x));
+               which->excludes = xrealloc(which->excludes,
+                                          which->alloc * sizeof(x));
        }
        which->excludes[which->nr++] = x;
 }
@@ -112,17 +112,15 @@ static int add_excludes_from_file_1(const char *fname,
                                    int baselen,
                                    struct exclude_list *which)
 {
+       struct stat st;
        int fd, i;
        long size;
        char *buf, *entry;
 
        fd = open(fname, O_RDONLY);
-       if (fd < 0)
+       if (fd < 0 || fstat(fd, &st) < 0)
                goto err;
-       size = lseek(fd, 0, SEEK_END);
-       if (size < 0)
-               goto err;
-       lseek(fd, 0, SEEK_SET);
+       size = st.st_size;
        if (size == 0) {
                close(fd);
                return 0;
@@ -293,7 +291,7 @@ static int read_directory_recursive(struct dir_struct *dir, const char *path, co
        if (fdir) {
                int exclude_stk;
                struct dirent *de;
-               char fullname[MAXPATHLEN + 1];
+               char fullname[PATH_MAX + 1];
                memcpy(fullname, base, baselen);
 
                exclude_stk = push_exclude_per_directory(dir, base, baselen);
@@ -336,7 +334,7 @@ static int read_directory_recursive(struct dir_struct *dir, const char *path, co
                                if (dir->show_other_directories &&
                                    (subdir || !dir->hide_empty_directories) &&
                                    !dir_exists(fullname, baselen + len)) {
-                                       // Rewind the read subdirectory
+                                       /* Rewind the read subdirectory */
                                        while (dir->nr > rewind_base)
                                                free(dir->entries[--dir->nr]);
                                        break;
@@ -399,3 +397,10 @@ int read_directory(struct dir_struct *dir, const char *path, const char *base, i
        qsort(dir->entries, dir->nr, sizeof(struct dir_entry *), cmp_name);
        return dir->nr;
 }
+
+int
+file_exists(const char *f)
+{
+  struct stat sb;
+  return stat(f, &sb) == 0;
+}