Code

git-branch: cleanup config file when deleting branches
[git.git] / merge-recursive.c
index ec8438b463a5b096ceeca916126e440198ff4740..4a82b741ae020376ac67b34d5fce86e8a87a3b5d 100644 (file)
@@ -97,11 +97,6 @@ static struct path_list current_directory_set = {NULL, 0, 0, 1};
 static int call_depth = 0;
 static int verbosity = 2;
 static int buffer_output = 1;
-static int do_progress = 1;
-static unsigned last_percent;
-static unsigned merged_cnt;
-static unsigned total_cnt;
-static volatile sig_atomic_t progress_update;
 static struct output_buffer *output_list, *output_end;
 
 static int show (int v)
@@ -176,39 +171,6 @@ static void output_commit_title(struct commit *commit)
        }
 }
 
-static void progress_interval(int signum)
-{
-       progress_update = 1;
-}
-
-static void setup_progress_signal(void)
-{
-       struct sigaction sa;
-       struct itimerval v;
-
-       memset(&sa, 0, sizeof(sa));
-       sa.sa_handler = progress_interval;
-       sigemptyset(&sa.sa_mask);
-       sa.sa_flags = SA_RESTART;
-       sigaction(SIGALRM, &sa, NULL);
-
-       v.it_interval.tv_sec = 1;
-       v.it_interval.tv_usec = 0;
-       v.it_value = v.it_interval;
-       setitimer(ITIMER_REAL, &v, NULL);
-}
-
-static void display_progress()
-{
-       unsigned percent = total_cnt ? merged_cnt * 100 / total_cnt : 0;
-       if (progress_update || percent != last_percent) {
-               fprintf(stderr, "%4u%% (%u/%u) done\r",
-                       percent, merged_cnt, total_cnt);
-               progress_update = 0;
-               last_percent = percent;
-       }
-}
-
 static struct cache_entry *make_cache_entry(unsigned int mode,
                const unsigned char *sha1, const char *path, int stage, int refresh)
 {
@@ -379,14 +341,11 @@ static struct path_list *get_unmerged(void)
        int i;
 
        unmerged->strdup_paths = 1;
-       total_cnt += active_nr;
 
-       for (i = 0; i < active_nr; i++, merged_cnt++) {
+       for (i = 0; i < active_nr; i++) {
                struct path_list_item *item;
                struct stage_data *e;
                struct cache_entry *ce = active_cache[i];
-               if (do_progress)
-                       display_progress();
                if (!ce_stage(ce))
                        continue;
 
@@ -576,6 +535,31 @@ static void flush_buffer(int fd, const char *buf, unsigned long size)
        }
 }
 
+static int make_room_for_path(const char *path)
+{
+       int status;
+       const char *msg = "failed to create path '%s'%s";
+
+       status = mkdir_p(path, 0777);
+       if (status) {
+               if (status == -3) {
+                       /* something else exists */
+                       error(msg, path, ": perhaps a D/F conflict?");
+                       return -1;
+               }
+               die(msg, path, "");
+       }
+
+       /* Successful unlink is good.. */
+       if (!unlink(path))
+               return 0;
+       /* .. and so is no existing file */
+       if (errno == ENOENT)
+               return 0;
+       /* .. but not some other error (who really cares what?) */
+       return error(msg, path, ": perhaps a D/F conflict?");
+}
+
 static void update_file_flags(const unsigned char *sha,
                              unsigned mode,
                              const char *path,
@@ -596,11 +580,12 @@ static void update_file_flags(const unsigned char *sha,
                if (type != OBJ_BLOB)
                        die("blob expected for %s '%s'", sha1_to_hex(sha), path);
 
+               if (make_room_for_path(path) < 0) {
+                       update_wd = 0;
+                       goto update_index;
+               }
                if (S_ISREG(mode) || (!has_symlinks && S_ISLNK(mode))) {
                        int fd;
-                       if (mkdir_p(path, 0777))
-                               die("failed to create path %s: %s", path, strerror(errno));
-                       unlink(path);
                        if (mode & 0100)
                                mode = 0777;
                        else
@@ -622,6 +607,7 @@ static void update_file_flags(const unsigned char *sha,
                        die("do not know what to do with %06o %s '%s'",
                            mode, sha1_to_hex(sha), path);
        }
+ update_index:
        if (update_cache)
                add_cacheinfo(mode, sha, path, 0, update_wd, ADD_CACHE_OK_TO_ADD);
 }
@@ -694,6 +680,12 @@ static int ll_xdl_merge(const struct ll_merge_driver *drv_unused,
 {
        xpparam_t xpp;
 
+       if (buffer_is_binary(orig->ptr, orig->size) ||
+                       buffer_is_binary(src1->ptr, src1->size) ||
+                       buffer_is_binary(src2->ptr, src2->size))
+               return error("Cannot merge binary files: %s vs. %s\n",
+                       name1, name2);
+
        memset(&xpp, 0, sizeof(xpp));
        return xdl_merge(orig,
                         src1, name1,
@@ -809,6 +801,9 @@ static int ll_ext_merge(const struct ll_merge_driver *fn,
        int status, fd, i;
        struct stat st;
 
+       if (fn->cmdline == NULL)
+               die("custom merge driver %s lacks command line.", fn->name);
+
        result->ptr = NULL;
        result->size = 0;
        create_temp(orig, temp[0]);
@@ -879,7 +874,7 @@ static int read_merge_config(const char *var, const char *value)
         * especially, we do not want to look at variables such as
         * "merge.summary", "merge.tool", and "merge.verbosity".
         */
-       if (prefixcmp(var, "merge.") || (ep = strrchr(var, '.')) == var + 6)
+       if (prefixcmp(var, "merge.") || (ep = strrchr(var, '.')) == var + 5)
                return 0;
 
        /*
@@ -899,8 +894,9 @@ static int read_merge_config(const char *var, const char *value)
                namebuf[namelen] = 0;
                fn->name = namebuf;
                fn->fn = ll_ext_merge;
-               fn->next = *ll_user_merge_tail;
+               fn->next = NULL;
                *ll_user_merge_tail = fn;
+               ll_user_merge_tail = &(fn->next);
        }
 
        ep++;
@@ -1021,13 +1017,8 @@ static int ll_merge(mmbuffer_t *result_buf,
        ll_driver_name = git_path_check_merge(a->path);
        driver = find_ll_merge_driver(ll_driver_name);
 
-       if (index_only && driver->recursive) {
-               void *merge_attr;
-
-               ll_driver_name = driver->recursive;
-               merge_attr = git_attr(ll_driver_name, strlen(ll_driver_name));
-               driver = find_ll_merge_driver(merge_attr);
-       }
+       if (index_only && driver->recursive)
+               driver = find_ll_merge_driver(driver->recursive);
        merge_status = driver->fn(driver, a->path,
                                  &orig, &src1, name1, &src2, name2,
                                  result_buf);
@@ -1357,20 +1348,31 @@ static int process_renames(struct path_list *a_renames,
                                mfi = merge_file(o, a, b,
                                                a_branch, b_branch);
 
-                               if (mfi.merge || !mfi.clean)
-                                       output(1, "Renamed %s => %s", ren1_src, ren1_dst);
-                               if (mfi.merge)
-                                       output(2, "Auto-merged %s", ren1_dst);
-                               if (!mfi.clean) {
-                                       output(1, "CONFLICT (rename/modify): Merge conflict in %s",
-                                              ren1_dst);
-                                       clean_merge = 0;
-
-                                       if (!index_only)
-                                               update_stages(ren1_dst,
-                                                               o, a, b, 1);
+                               if (mfi.clean &&
+                                   sha_eq(mfi.sha, ren1->pair->two->sha1) &&
+                                   mfi.mode == ren1->pair->two->mode)
+                                       /*
+                                        * This messaged is part of
+                                        * t6022 test. If you change
+                                        * it update the test too.
+                                        */
+                                       output(3, "Skipped %s (merged same as existing)", ren1_dst);
+                               else {
+                                       if (mfi.merge || !mfi.clean)
+                                               output(1, "Renamed %s => %s", ren1_src, ren1_dst);
+                                       if (mfi.merge)
+                                               output(2, "Auto-merged %s", ren1_dst);
+                                       if (!mfi.clean) {
+                                               output(1, "CONFLICT (rename/modify): Merge conflict in %s",
+                                                      ren1_dst);
+                                               clean_merge = 0;
+
+                                               if (!index_only)
+                                                       update_stages(ren1_dst,
+                                                                     o, a, b, 1);
+                                       }
+                                       update_file(mfi.clean, mfi.sha, mfi.mode, ren1_dst);
                                }
-                               update_file(mfi.clean, mfi.sha, mfi.mode, ren1_dst);
                        }
                }
        }
@@ -1380,9 +1382,9 @@ static int process_renames(struct path_list *a_renames,
        return clean_merge;
 }
 
-static unsigned char *has_sha(const unsigned char *sha)
+static unsigned char *stage_sha(const unsigned char *sha, unsigned mode)
 {
-       return is_null_sha1(sha) ? NULL: (unsigned char *)sha;
+       return (is_null_sha1(sha) || mode == 0) ? NULL: (unsigned char *)sha;
 }
 
 /* Per entry merge function */
@@ -1395,12 +1397,12 @@ static int process_entry(const char *path, struct stage_data *entry,
        print_index_entry("\tpath: ", entry);
        */
        int clean_merge = 1;
-       unsigned char *o_sha = has_sha(entry->stages[1].sha);
-       unsigned char *a_sha = has_sha(entry->stages[2].sha);
-       unsigned char *b_sha = has_sha(entry->stages[3].sha);
        unsigned o_mode = entry->stages[1].mode;
        unsigned a_mode = entry->stages[2].mode;
        unsigned b_mode = entry->stages[3].mode;
+       unsigned char *o_sha = stage_sha(entry->stages[1].sha, o_mode);
+       unsigned char *a_sha = stage_sha(entry->stages[2].sha, a_mode);
+       unsigned char *b_sha = stage_sha(entry->stages[3].sha, b_mode);
 
        if (o_sha && (!a_sha || !b_sha)) {
                /* Case A: Deleted in one */
@@ -1501,6 +1503,12 @@ static int process_entry(const char *path, struct stage_data *entry,
                                update_file_flags(mfi.sha, mfi.mode, path,
                                              0 /* update_cache */, 1 /* update_working_directory */);
                }
+       } else if (!o_sha && !a_sha && !b_sha) {
+               /*
+                * this entry was deleted altogether. a_mode == 0 means
+                * we had that path and want to actively remove it.
+                */
+               remove_file(1, path, !a_mode);
        } else
                die("Fatal merge failure, shouldn't happen.");
 
@@ -1547,15 +1555,12 @@ static int merge_trees(struct tree *head,
                re_merge = get_renames(merge, common, head, merge, entries);
                clean = process_renames(re_head, re_merge,
                                branch1, branch2);
-               total_cnt += entries->nr;
-               for (i = 0; i < entries->nr; i++, merged_cnt++) {
+               for (i = 0; i < entries->nr; i++) {
                        const char *path = entries->items[i].path;
                        struct stage_data *e = entries->items[i].util;
                        if (!e->processed
                                && !process_entry(path, e, branch1, branch2))
                                clean = 0;
-                       if (do_progress)
-                               display_progress();
                }
 
                path_list_clear(re_merge, 0);
@@ -1663,15 +1668,6 @@ static int merge(struct commit *h1,
                commit_list_insert(h1, &(*result)->parents);
                commit_list_insert(h2, &(*result)->parents->next);
        }
-       if (!call_depth && do_progress) {
-               /* Make sure we end at 100% */
-               if (!total_cnt)
-                       total_cnt = 1;
-               merged_cnt = total_cnt;
-               progress_update = 1;
-               display_progress();
-               fputc('\n', stderr);
-       }
        flush_output();
        return clean;
 }
@@ -1748,12 +1744,8 @@ int main(int argc, char *argv[])
        }
        if (argc - i != 3) /* "--" "<head>" "<remote>" */
                die("Not handling anything other than two heads merge.");
-       if (verbosity >= 5) {
+       if (verbosity >= 5)
                buffer_output = 0;
-               do_progress = 0;
-       }
-       else
-               do_progress = isatty(1);
 
        branch1 = argv[++i];
        branch2 = argv[++i];
@@ -1764,8 +1756,6 @@ int main(int argc, char *argv[])
        branch1 = better_branch_name(branch1);
        branch2 = better_branch_name(branch2);
 
-       if (do_progress)
-               setup_progress_signal();
        if (show(3))
                printf("Merging %s with %s\n", branch1, branch2);