sha1-lookup: make selection of 'middle' less aggressive

diff --git a/builtin-reset.c b/builtin-reset.c
index 4c61025aaef96ae9f8bcabe3fd4ad6c0fc2beba3..79424bb26efb4525b6bc2080e639b51d59eaabd9 100644 (file)
--- a/builtin-reset.c
+++ b/builtin-reset.c
@@ -16,9 +16,14 @@
 #include "diff.h"
 #include "diffcore.h"
 #include "tree.h"
+#include "branch.h"
+#include "parse-options.h"
 
-static const char builtin_reset_usage[] =
-"git-reset [--mixed | --soft | --hard] [-q] [<commit-ish>] [ [--] <paths>...]";
+static const char * const git_reset_usage[] = {
+       "git-reset [--mixed | --soft | --hard] [-q] [<commit>]",
+       "git-reset [--mixed] <commit> [--] <paths>...",
+       NULL
+};
 
 static char *args_to_str(const char **argv)
 {
@@ -44,18 +49,6 @@ static inline int is_merge(void)
        return !access(git_path("MERGE_HEAD"), F_OK);
 }
 
-static int unmerged_files(void)
-{
-       int i;
-       read_cache();
-       for (i = 0; i < active_nr; i++) {
-               struct cache_entry *ce = active_cache[i];
-               if (ce_stage(ce))
-                       return 1;
-       }
-       return 0;
-}
-
 static int reset_index_file(const unsigned char *sha1, int is_hard_reset)
 {
        int i = 0;
@@ -74,14 +67,10 @@ static int reset_index_file(const unsigned char *sha1, int is_hard_reset)
 
 static void print_new_head_line(struct commit *commit)
 {
-       const char *hex, *dots = "...", *body;
+       const char *hex, *body;
 
        hex = find_unique_abbrev(commit->object.sha1, DEFAULT_ABBREV);
-       if (!hex) {
-               hex = sha1_to_hex(commit->object.sha1);
-               dots = "";
-       }
-       printf("HEAD is now at %s%s", hex, dots);
+       printf("HEAD is now at %s", hex);
        body = strstr(commit->buffer, "\n\n");
        if (body) {
                const char *eol;
@@ -108,7 +97,6 @@ static int update_index_refresh(int fd, struct lock_file *index_lock)
                return error("Could not read index");
        result = refresh_cache(0) ? 1 : 0;
        if (write_cache(fd, active_cache, active_nr) ||
-                       close(fd) ||
                        commit_locked_index(index_lock))
                return error ("Could not refresh index");
        return result;
@@ -158,6 +146,7 @@ static int read_from_tree(const char *prefix, const char **argv,
                return 1;
        diffcore_std(&opt);
        diff_flush(&opt);
+       diff_tree_release_paths(&opt);
 
        if (!index_was_discarded)
                /* The index is still clobbered from do_diff_cache() */
@@ -180,40 +169,31 @@ static const char *reset_type_names[] = { "mixed", "soft", "hard", NULL };
 
 int cmd_reset(int argc, const char **argv, const char *prefix)
 {
-       int i = 1, reset_type = NONE, update_ref_status = 0, quiet = 0;
+       int i = 0, reset_type = NONE, update_ref_status = 0, quiet = 0;
        const char *rev = "HEAD";
        unsigned char sha1[20], *orig = NULL, sha1_orig[20],
                                *old_orig = NULL, sha1_old_orig[20];
        struct commit *commit;
        char *reflog_action, msg[1024];
+       const struct option options[] = {
+               OPT_SET_INT(0, "mixed", &reset_type,
+                                               "reset HEAD and index", MIXED),
+               OPT_SET_INT(0, "soft", &reset_type, "reset only HEAD", SOFT),
+               OPT_SET_INT(0, "hard", &reset_type,
+                               "reset HEAD, index and working tree", HARD),
+               OPT_BOOLEAN('q', NULL, &quiet,
+                               "disable showing new HEAD in hard reset"),
+               OPT_END()
+       };
 
        git_config(git_default_config);
 
+       argc = parse_options(argc, argv, options, git_reset_usage,
+                                               PARSE_OPT_KEEP_DASHDASH);
        reflog_action = args_to_str(argv);
        setenv("GIT_REFLOG_ACTION", reflog_action, 0);
 
-       while (i < argc) {
-               if (!strcmp(argv[i], "--mixed")) {
-                       reset_type = MIXED;
-                       i++;
-               }
-               else if (!strcmp(argv[i], "--soft")) {
-                       reset_type = SOFT;
-                       i++;
-               }
-               else if (!strcmp(argv[i], "--hard")) {
-                       reset_type = HARD;
-                       i++;
-               }
-               else if (!strcmp(argv[i], "-q")) {
-                       quiet = 1;
-                       i++;
-               }
-               else
-                       break;
-       }
-
-       if (i < argc && argv[i][0] != '-')
+       if (i < argc && strcmp(argv[i], "--"))
                rev = argv[i++];
 
        if (get_sha1(rev, sha1))
@@ -226,8 +206,6 @@ int cmd_reset(int argc, const char **argv, const char *prefix)
 
        if (i < argc && !strcmp(argv[i], "--"))
                i++;
-       else if (i < argc && argv[i][0] == '-')
-               usage(builtin_reset_usage);
 
        /* git reset tree [--] paths... can be used to
         * load chosen paths from the tree into the index without
@@ -243,11 +221,14 @@ int cmd_reset(int argc, const char **argv, const char *prefix)
        if (reset_type == NONE)
                reset_type = MIXED; /* by default */
 
+       if (reset_type == HARD && is_bare_repository())
+               die("hard reset makes no sense in a bare repository");
+
        /* Soft reset does not touch the index file nor the working tree
         * at all, but requires them in a good order.  Other resets reset
         * the index file to the tree object we are switching to. */
        if (reset_type == SOFT) {
-               if (is_merge() || unmerged_files())
+               if (is_merge() || read_cache() < 0 || unmerged_cache())
                        die("Cannot do a soft reset in the middle of a merge.");
        }
        else if (reset_index_file(sha1, (reset_type == HARD)))
@@ -279,10 +260,7 @@ int cmd_reset(int argc, const char **argv, const char *prefix)
                break;
        }
 
-       unlink(git_path("MERGE_HEAD"));
-       unlink(git_path("rr-cache/MERGE_RR"));
-       unlink(git_path("MERGE_MSG"));
-       unlink(git_path("SQUASH_MSG"));
+       remove_branch_state();
 
        free(reflog_action);