Add howto about separating topics.

diff --git a/entry.c b/entry.c
index d7824c4f6133fe288b3c1347bec266f5fc2aa4de..6c47c3a3e1acb8badaadad42dfe3d0bd7a06cac3 100644 (file)
--- a/entry.c
+++ b/entry.c
@@ -12,10 +12,10 @@ static void create_directories(const char *path, struct checkout *state)
                len = slash - path;
                memcpy(buf, path, len);
                buf[len] = 0;
-               if (mkdir(buf, 0755)) {
+               if (mkdir(buf, 0777)) {
                        if (errno == EEXIST) {
                                struct stat st;
-                               if (len > state->base_dir_len && state->force && !unlink(buf) && !mkdir(buf, 0755))
+                               if (len > state->base_dir_len && state->force && !unlink(buf) && !mkdir(buf, 0777))
                                        continue;
                                if (!stat(buf, &st) && S_ISDIR(st.st_mode))
                                        continue; /* ok */
@@ -57,19 +57,10 @@ static void remove_subtree(const char *path)
                die("cannot rmdir %s", path);
 }
 
-static int create_file(const char *path, unsigned int mode, int force)
+static int create_file(const char *path, unsigned int mode)
 {
-       int fd;
-
        mode = (mode & 0100) ? 0777 : 0666;
-       fd = open(path, O_WRONLY | O_TRUNC | O_CREAT, mode);
-       if (fd < 0) {
-               if (errno == EISDIR && force) {
-                       remove_subtree(path);
-                       fd = open(path, O_WRONLY | O_TRUNC | O_CREAT, mode);
-               }
-       }
-       return fd;
+       return open(path, O_WRONLY | O_CREAT | O_EXCL, mode);
 }
 
 static int write_entry(struct cache_entry *ce, const char *path, struct checkout *state)
@@ -79,45 +70,42 @@ static int write_entry(struct cache_entry *ce, const char *path, struct checkout
        unsigned long size;
        long wrote;
        char type[20];
-       char target[1024];
 
        new = read_sha1_file(ce->sha1, type, &size);
        if (!new || strcmp(type, "blob")) {
                if (new)
                        free(new);
-               return error("git-checkout-cache: unable to read sha1 file of %s (%s)",
+               return error("git-checkout-index: unable to read sha1 file of %s (%s)",
                        path, sha1_to_hex(ce->sha1));
        }
        switch (ntohl(ce->ce_mode) & S_IFMT) {
        case S_IFREG:
-               fd = create_file(path, ntohl(ce->ce_mode), state->force);
+               fd = create_file(path, ntohl(ce->ce_mode));
                if (fd < 0) {
                        free(new);
-                       return error("git-checkout-cache: unable to create file %s (%s)",
+                       return error("git-checkout-index: unable to create file %s (%s)",
                                path, strerror(errno));
                }
                wrote = write(fd, new, size);
                close(fd);
                free(new);
                if (wrote != size)
-                       return error("git-checkout-cache: unable to write file %s", path);
+                       return error("git-checkout-index: unable to write file %s", path);
                break;
        case S_IFLNK:
-               memcpy(target, new, size);
-               target[size] = '\0';
-               if (symlink(target, path)) {
+               if (symlink(new, path)) {
                        free(new);
-                       return error("git-checkout-cache: unable to create symlink %s (%s)",
-                               path, strerror(errno));
+                       return error("git-checkout-index: unable to create "
+                                    "symlink %s (%s)", path, strerror(errno));
                }
                free(new);
                break;
        default:
                free(new);
-               return error("git-checkout-cache: unknown file mode for %s", path);
+               return error("git-checkout-index: unknown file mode for %s", path);
        }
 
-       if (state->update) {
+       if (state->refresh_cache) {
                struct stat st;
                lstat(ce->name, &st);
                fill_stat_cache_info(ce, &st);
@@ -140,8 +128,8 @@ int checkout_entry(struct cache_entry *ce, struct checkout *state)
                        return 0;
                if (!state->force) {
                        if (!state->quiet)
-                               fprintf(stderr, "git-checkout-cache: %s already exists\n", path);
-                       return 0;
+                               fprintf(stderr, "git-checkout-index: %s already exists\n", path);
+                       return -1;
                }
 
                /*
@@ -151,6 +139,11 @@ int checkout_entry(struct cache_entry *ce, struct checkout *state)
                 * just do the right thing)
                 */
                unlink(path);
+               if (S_ISDIR(st.st_mode)) {
+                       if (!state->force)
+                               return error("%s is a directory", path);
+                       remove_subtree(path);
+               }
        } else if (state->not_new) 
                return 0;
        create_directories(path, state);