Fix per-directory exclude handing for "git add"

[git.git] / builtin-apply.c

diff --git a/builtin-apply.c b/builtin-apply.c
index 25b1447901d4085bdc5b554451c5e79b72cbae12..5cc90e68f880180b072db946080c4168b98603cf 100644 (file)
--- a/builtin-apply.c
+++ b/builtin-apply.c
@@ -41,7 +41,7 @@ static int apply_in_reverse;
 static int apply_with_reject;
 static int apply_verbosely;
 static int no_add;
-static int show_index_info;
+static const char *fake_ancestor;
 static int line_termination = '\n';
 static unsigned long p_context = ULONG_MAX;
 static const char apply_usage[] =
@@ -254,7 +254,7 @@ static char *find_name(const char *line, char *def, int p_value, int terminate)
                if (name) {
                        char *cp = name;
                        while (p_value) {
-                               cp = strchr(name, '/');
+                               cp = strchr(cp, '/');
                                if (!cp)
                                        break;
                                cp++;
@@ -1514,7 +1514,8 @@ static int find_offset(const char *buf, unsigned long size, const char *fragment
        }
 
        /* Exact line number? */
-       if (!memcmp(buf + start, fragment, fragsize))
+       if ((start + fragsize <= size) &&
+           !memcmp(buf + start, fragment, fragsize))
                return start;
 
        /*
@@ -1641,15 +1642,22 @@ static int apply_line(char *output, const char *patch, int plen)
 
        buf = output;
        if (need_fix_leading_space) {
+               int consecutive_spaces = 0;
                /* between patch[1..last_tab_in_indent] strip the
                 * funny spaces, updating them to tab as needed.
                 */
                for (i = 1; i < last_tab_in_indent; i++, plen--) {
                        char ch = patch[i];
-                       if (ch != ' ')
+                       if (ch != ' ') {
+                               consecutive_spaces = 0;
                                *output++ = ch;
-                       else if ((i % 8) == 0)
-                               *output++ = '\t';
+                       } else {
+                               consecutive_spaces++;
+                               if (consecutive_spaces == 8) {
+                                       *output++ = '\t';
+                                       consecutive_spaces = 0;
+                               }
+                       }
                }
                fixed = 1;
                i = last_tab_in_indent;
@@ -2226,9 +2234,26 @@ static int check_patch_list(struct patch *patch)
        return err;
 }
 
-static void show_index_list(struct patch *list)
+/* This function tries to read the sha1 from the current index */
+static int get_current_sha1(const char *path, unsigned char *sha1)
+{
+       int pos;
+
+       if (read_cache() < 0)
+               return -1;
+       pos = cache_name_pos(path, strlen(path));
+       if (pos < 0)
+               return -1;
+       hashcpy(sha1, active_cache[pos]->sha1);
+       return 0;
+}
+
+/* Build an index that contains the just the files needed for a 3way merge */
+static void build_fake_ancestor(struct patch *list, const char *filename)
 {
        struct patch *patch;
+       struct index_state result = { 0 };
+       int fd;
 
        /* Once we start supporting the reverse patch, it may be
         * worth showing the new sha1 prefix, but until then...
@@ -2236,24 +2261,36 @@ static void show_index_list(struct patch *list)
        for (patch = list; patch; patch = patch->next) {
                const unsigned char *sha1_ptr;
                unsigned char sha1[20];
+               struct cache_entry *ce;
                const char *name;
 
                name = patch->old_name ? patch->old_name : patch->new_name;
                if (0 < patch->is_new)
-                       sha1_ptr = null_sha1;
+                       continue;
                else if (get_sha1(patch->old_sha1_prefix, sha1))
-                       die("sha1 information is lacking or useless (%s).",
-                           name);
+                       /* git diff has no index line for mode/type changes */
+                       if (!patch->lines_added && !patch->lines_deleted) {
+                               if (get_current_sha1(patch->new_name, sha1) ||
+                                   get_current_sha1(patch->old_name, sha1))
+                                       die("mode change for %s, which is not "
+                                               "in current HEAD", name);
+                               sha1_ptr = sha1;
+                       } else
+                               die("sha1 information is lacking or useless "
+                                       "(%s).", name);
                else
                        sha1_ptr = sha1;
 
-               printf("%06o %s ",patch->old_mode, sha1_to_hex(sha1_ptr));
-               if (line_termination && quote_c_style(name, NULL, NULL, 0))
-                       quote_c_style(name, NULL, stdout, 0);
-               else
-                       fputs(name, stdout);
-               putchar(line_termination);
+               ce = make_cache_entry(patch->old_mode, sha1_ptr, name, 0, 0);
+               if (add_index_entry(&result, ce, ADD_CACHE_OK_TO_ADD))
+                       die ("Could not add %s to temporary index", name);
        }
+
+       fd = open(filename, O_WRONLY | O_CREAT, 0666);
+       if (fd < 0 || write_index(&result, fd) || close(fd))
+               die ("Could not write temporary index to %s", filename);
+
+       discard_index(&result);
 }
 
 static void stat_patch_list(struct patch *patch)
@@ -2775,8 +2812,8 @@ static int apply_patch(int fd, const char *filename, int inaccurate_eof)
        if (apply && write_out_results(list, skipped_patch))
                exit(1);
 
-       if (show_index_info)
-               show_index_list(list);
+       if (fake_ancestor)
+               build_fake_ancestor(list, fake_ancestor);
 
        if (diffstat)
                stat_patch_list(list);
@@ -2884,9 +2921,11 @@ int cmd_apply(int argc, const char **argv, const char *unused_prefix)
                        apply = 1;
                        continue;
                }
-               if (!strcmp(arg, "--index-info")) {
+               if (!strcmp(arg, "--build-fake-ancestor")) {
                        apply = 0;
-                       show_index_info = 1;
+                       if (++i >= argc)
+                               die ("need a filename");
+                       fake_ancestor = argv[i];
                        continue;
                }
                if (!strcmp(arg, "-z")) {