Code

unexpected Make output (e.g. from --debug) causes build failure
[git.git] / builtin-branch.c
index 8956d0f84213afbd0e53e39bc863c05960f524f0..5f5c1823cb27cf1173c87f43bd0d2de95a06bf46 100644 (file)
@@ -1,7 +1,7 @@
 /*
  * Builtin "git branch"
  *
- * Copyright (c) 2006 Kristian Høgsberg <krh@redhat.com>
+ * Copyright (c) 2006 Kristian Høgsberg <krh@redhat.com>
  * Based on git-branch.sh by Junio C Hamano.
  */
 
@@ -10,6 +10,7 @@
 #include "refs.h"
 #include "commit.h"
 #include "builtin.h"
+#include "remote.h"
 
 static const char builtin_branch_usage[] =
   "git-branch [-r] (-d | -D) <branchname> | [--track | --no-track] [-l] [-f] <branchname> [<start-point>] | (-m | -M) [<oldbranch>] <newbranch> | [--color | --no-color] [-r | -a] [-v [--abbrev=<length> | --no-abbrev]]";
@@ -22,7 +23,7 @@ static const char builtin_branch_usage[] =
 static const char *head;
 static unsigned char head_sha1[20];
 
-static int branch_track_remotes;
+static int branch_track = 1;
 
 static int branch_use_color;
 static char branch_colors[][COLOR_MAXLEN] = {
@@ -55,7 +56,7 @@ static int parse_branch_color_slot(const char *var, int ofs)
        die("bad config variable '%s'", var);
 }
 
-int git_branch_config(const char *var, const char *value)
+static int git_branch_config(const char *var, const char *value)
 {
        if (!strcmp(var, "color.branch")) {
                branch_use_color = git_config_colorbool(var, value);
@@ -67,12 +68,12 @@ int git_branch_config(const char *var, const char *value)
                return 0;
        }
        if (!strcmp(var, "branch.autosetupmerge"))
-               branch_track_remotes = git_config_bool(var, value);
+                       branch_track = git_config_bool(var, value);
 
        return git_default_config(var, value);
 }
 
-const char *branch_get_color(enum color_branch ix)
+static const char *branch_get_color(enum color_branch ix)
 {
        if (branch_use_color)
                return branch_colors[ix];
@@ -85,6 +86,7 @@ static int delete_branches(int argc, const char **argv, int force, int kinds)
        unsigned char sha1[20];
        char *name = NULL;
        const char *fmt, *remote;
+       char section[PATH_MAX];
        int i;
        int ret = 0;
 
@@ -152,9 +154,13 @@ static int delete_branches(int argc, const char **argv, int force, int kinds)
                        error("Error deleting %sbranch '%s'", remote,
                               argv[i]);
                        ret = 1;
-               } else
+               } else {
                        printf("Deleted %sbranch %s.\n", remote, argv[i]);
-
+                       snprintf(section, sizeof(section), "branch.%s",
+                                argv[i]);
+                       if (git_config_rename_section(section, NULL) < 0)
+                               warning("Update of config-file failed");
+               }
        }
 
        if (name)
@@ -242,7 +248,6 @@ static void print_ref_item(struct ref_item *item, int maxwidth, int verbose,
        char c;
        int color;
        struct commit *commit;
-       char subject[256];
 
        switch (item->kind) {
        case REF_LOCAL_BRANCH:
@@ -263,17 +268,23 @@ static void print_ref_item(struct ref_item *item, int maxwidth, int verbose,
        }
 
        if (verbose) {
+               char *subject = NULL;
+               unsigned long subject_len = 0;
+               const char *sub = " **** invalid ref ****";
+
                commit = lookup_commit(item->sha1);
-               if (commit && !parse_commit(commit))
+               if (commit && !parse_commit(commit)) {
                        pretty_print_commit(CMIT_FMT_ONELINE, commit, ~0,
-                                           subject, sizeof(subject), 0,
+                                           &subject, &subject_len, 0,
                                            NULL, NULL, 0);
-               else
-                       strcpy(subject, " **** invalid ref ****");
+                       sub = subject;
+               }
                printf("%c %s%-*s%s %s %s\n", c, branch_get_color(color),
                       maxwidth, item->name,
                       branch_get_color(COLOR_BRANCH_RESET),
-                      find_unique_abbrev(item->sha1, abbrev), subject);
+                      find_unique_abbrev(item->sha1, abbrev), sub);
+               if (subject)
+                       free(subject);
        } else {
                printf("%c %s%s%s\n", c, branch_get_color(color), item->name,
                       branch_get_color(COLOR_BRANCH_RESET));
@@ -314,110 +325,70 @@ static void print_ref_list(int kinds, int detached, int verbose, int abbrev)
        free_ref_list(&ref_list);
 }
 
-static char *config_repo;
-static char *config_remote;
-static const char *start_ref;
-static int start_len;
-static int base_len;
+struct tracking {
+       struct refspec spec;
+       char *src;
+       const char *remote;
+       int matches;
+};
 
-static int get_remote_branch_name(const char *value)
+static int find_tracked_branch(struct remote *remote, void *priv)
 {
-       const char *colon;
-       const char *end;
-
-       if (*value == '+')
-               value++;
-
-       colon = strchr(value, ':');
-       if (!colon)
-               return 0;
-
-       end = value + strlen(value);
-
-       /* Try an exact match first.  */
-       if (!strcmp(colon + 1, start_ref)) {
-               /* Truncate the value before the colon.  */
-               nfasprintf(&config_repo, "%.*s", colon - value, value);
-               return 1;
-       }
-
-       /* Try with a wildcard match now.  */
-       if (end - value > 2 && end[-2] == '/' && end[-1] == '*' &&
-           colon - value > 2 && colon[-2] == '/' && colon[-1] == '*' &&
-           (end - 2) - (colon + 1) == base_len &&
-           !strncmp(colon + 1, start_ref, base_len)) {
-               /* Replace the star with the remote branch name.  */
-               nfasprintf(&config_repo, "%.*s%s",
-                          (colon - 2) - value, value,
-                          start_ref + base_len);
-               return 1;
+       struct tracking *tracking = priv;
+
+       if (!remote_find_tracking(remote, &tracking->spec)) {
+               if (++tracking->matches == 1) {
+                       tracking->src = tracking->spec.src;
+                       tracking->remote = remote->name;
+               } else {
+                       free(tracking->spec.src);
+                       if (tracking->src) {
+                               free(tracking->src);
+                               tracking->src = NULL;
+                       }
+               }
+               tracking->spec.src = NULL;
        }
 
        return 0;
 }
 
-static int get_remote_config(const char *key, const char *value)
-{
-       const char *var;
-       if (prefixcmp(key, "remote."))
-               return 0;
-
-       var = strrchr(key, '.');
-       if (var == key + 6)
-               return 0;
-
-       if (!strcmp(var, ".fetch") && get_remote_branch_name(value))
-               nfasprintf(&config_remote, "%.*s", var - (key + 7), key + 7);
 
-       return 0;
-}
-
-static void set_branch_merge(const char *name, const char *config_remote,
-                            const char *config_repo)
+/*
+ * This is called when new_ref is branched off of orig_ref, and tries
+ * to infer the settings for branch.<new_ref>.{remote,merge} from the
+ * config.
+ */
+static int setup_tracking(const char *new_ref, const char *orig_ref)
 {
        char key[1024];
-       if (sizeof(key) <=
-           snprintf(key, sizeof(key), "branch.%s.remote", name))
-               die("what a long branch name you have!");
-       git_config_set(key, config_remote);
-
-       /*
-        * We do not have to check if we have enough space for
-        * the 'merge' key, since it's shorter than the
-        * previous 'remote' key, which we already checked.
-        */
-       snprintf(key, sizeof(key), "branch.%s.merge", name);
-       git_config_set(key, config_repo);
-}
+       struct tracking tracking;
 
-static void set_branch_defaults(const char *name, const char *real_ref)
-{
-       const char *slash = strrchr(real_ref, '/');
-
-       if (!slash)
-               return;
-
-       start_ref = real_ref;
-       start_len = strlen(real_ref);
-       base_len = slash - real_ref;
-       git_config(get_remote_config);
-       if (!config_repo && !config_remote &&
-           !prefixcmp(real_ref, "refs/heads/")) {
-               set_branch_merge(name, ".", real_ref);
-               printf("Branch %s set up to track local branch %s.\n",
-                      name, real_ref);
-       }
+       if (strlen(new_ref) > 1024 - 7 - 7 - 1)
+               return error("Tracking not set up: name too long: %s",
+                               new_ref);
 
-       if (config_repo && config_remote) {
-               set_branch_merge(name, config_remote, config_repo);
+       memset(&tracking, 0, sizeof(tracking));
+       tracking.spec.dst = (char *)orig_ref;
+       if (for_each_remote(find_tracked_branch, &tracking) ||
+                       !tracking.matches)
+               return 1;
+
+       if (tracking.matches > 1)
+               return error("Not tracking: ambiguous information for ref %s",
+                               orig_ref);
+
+       if (tracking.matches == 1) {
+               sprintf(key, "branch.%s.remote", new_ref);
+               git_config_set(key, tracking.remote ?  tracking.remote : ".");
+               sprintf(key, "branch.%s.merge", new_ref);
+               git_config_set(key, tracking.src);
+               free(tracking.src);
                printf("Branch %s set up to track remote branch %s.\n",
-                      name, real_ref);
+                              new_ref, orig_ref);
        }
 
-       if (config_repo)
-               free(config_repo);
-       if (config_remote)
-               free(config_remote);
+       return 0;
 }
 
 static void create_branch(const char *name, const char *start_name,
@@ -462,7 +433,7 @@ static void create_branch(const char *name, const char *start_name,
                die("Not a valid branch point: '%s'.", start_name);
        hashcpy(sha1, commit->object.sha1);
 
-       lock = lock_any_ref_for_update(ref, NULL);
+       lock = lock_any_ref_for_update(ref, NULL, 0);
        if (!lock)
                die("Failed to lock ref for update: %s.", strerror(errno));
 
@@ -480,7 +451,7 @@ static void create_branch(const char *name, const char *start_name,
           automatically merges from there.  So far, this is only done for
           remotes registered via .git/config.  */
        if (real_ref && track)
-               set_branch_defaults(name, real_ref);
+               setup_tracking(name, real_ref);
 
        if (write_ref_sha1(lock, sha1, msg) < 0)
                die("Failed to write ref: %s.", strerror(errno));
@@ -539,7 +510,7 @@ int cmd_branch(int argc, const char **argv, const char *prefix)
        int i;
 
        git_config(git_branch_config);
-       track = branch_track_remotes;
+       track = branch_track;
 
        for (i = 1; i < argc; i++) {
                const char *arg = argv[i];