Merge branch 'jt/sha1-file-cleanup' into next
[gitweb.git] / builtin / log.c
index cd9c4a46d10c0898ea84f9b5f5f4f833a1428dbd..25c82410923f7b7e33760b31362e0f665a66abda 100644 (file)
@@ -5,6 +5,7 @@
  *              2006 Junio Hamano
  */
 #include "cache.h"
+#include "config.h"
 #include "refs.h"
 #include "color.h"
 #include "commit.h"
@@ -52,9 +53,14 @@ struct line_opt_callback_data {
        struct string_list args;
 };
 
-static int parse_decoration_style(const char *var, const char *value)
+static int auto_decoration_style(void)
 {
-       switch (git_config_maybe_bool(var, value)) {
+       return (isatty(1) || pager_in_use()) ? DECORATE_SHORT_REFS : 0;
+}
+
+static int parse_decoration_style(const char *value)
+{
+       switch (git_parse_maybe_bool(value)) {
        case 1:
                return DECORATE_SHORT_REFS;
        case 0:
@@ -67,7 +73,7 @@ static int parse_decoration_style(const char *var, const char *value)
        else if (!strcmp(value, "short"))
                return DECORATE_SHORT_REFS;
        else if (!strcmp(value, "auto"))
-               return (isatty(1) || pager_in_use()) ? DECORATE_SHORT_REFS : 0;
+               return auto_decoration_style();
        return -1;
 }
 
@@ -76,7 +82,7 @@ static int decorate_callback(const struct option *opt, const char *arg, int unse
        if (unset)
                decoration_style = 0;
        else if (arg)
-               decoration_style = parse_decoration_style("command line", arg);
+               decoration_style = parse_decoration_style(arg);
        else
                decoration_style = DECORATE_SHORT_REFS;
 
@@ -105,6 +111,8 @@ static void init_log_defaults(void)
 {
        init_grep_defaults();
        init_diff_ui_defaults();
+
+       decoration_style = auto_decoration_style();
 }
 
 static void cmd_log_init_defaults(struct rev_info *rev)
@@ -364,11 +372,14 @@ static int cmd_log_walk(struct rev_info *rev)
                         */
                        rev->max_count++;
                if (!rev->reflog_info) {
-                       /* we allow cycles in reflog ancestry */
+                       /*
+                        * We may show a given commit multiple times when
+                        * walking the reflogs.
+                        */
                        free_commit_buffer(commit);
+                       free_commit_list(commit->parents);
+                       commit->parents = NULL;
                }
-               free_commit_list(commit->parents);
-               commit->parents = NULL;
                if (saved_nrl < rev->diffopt.needed_rename_limit)
                        saved_nrl = rev->diffopt.needed_rename_limit;
                if (rev->diffopt.degraded_cc_to_c)
@@ -401,7 +412,7 @@ static int git_log_config(const char *var, const char *value, void *cb)
        if (!strcmp(var, "log.date"))
                return git_config_string(&default_date_mode, var, value);
        if (!strcmp(var, "log.decorate")) {
-               decoration_style = parse_decoration_style(var, value);
+               decoration_style = parse_decoration_style(value);
                if (decoration_style < 0)
                        decoration_style = 0; /* maybe warn? */
                return 0;
@@ -464,9 +475,9 @@ static void show_tagger(char *buf, int len, struct rev_info *rev)
        strbuf_release(&out);
 }
 
-static int show_blob_object(const unsigned char *sha1, struct rev_info *rev, const char *obj_name)
+static int show_blob_object(const struct object_id *oid, struct rev_info *rev, const char *obj_name)
 {
-       unsigned char sha1c[20];
+       struct object_id oidc;
        struct object_context obj_context;
        char *buf;
        unsigned long size;
@@ -474,30 +485,34 @@ static int show_blob_object(const unsigned char *sha1, struct rev_info *rev, con
        fflush(rev->diffopt.file);
        if (!DIFF_OPT_TOUCHED(&rev->diffopt, ALLOW_TEXTCONV) ||
            !DIFF_OPT_TST(&rev->diffopt, ALLOW_TEXTCONV))
-               return stream_blob_to_fd(1, sha1, NULL, 0);
+               return stream_blob_to_fd(1, oid, NULL, 0);
 
-       if (get_sha1_with_context(obj_name, 0, sha1c, &obj_context))
+       if (get_oid_with_context(obj_name, GET_OID_RECORD_PATH,
+                                &oidc, &obj_context))
                die(_("Not a valid object name %s"), obj_name);
-       if (!obj_context.path[0] ||
-           !textconv_object(obj_context.path, obj_context.mode, sha1c, 1, &buf, &size))
-               return stream_blob_to_fd(1, sha1, NULL, 0);
+       if (!obj_context.path ||
+           !textconv_object(obj_context.path, obj_context.mode, &oidc, 1, &buf, &size)) {
+               free(obj_context.path);
+               return stream_blob_to_fd(1, oid, NULL, 0);
+       }
 
        if (!buf)
                die(_("git show %s: bad file"), obj_name);
 
        write_or_die(1, buf, size);
+       free(obj_context.path);
        return 0;
 }
 
-static int show_tag_object(const unsigned char *sha1, struct rev_info *rev)
+static int show_tag_object(const struct object_id *oid, struct rev_info *rev)
 {
        unsigned long size;
        enum object_type type;
-       char *buf = read_sha1_file(sha1, &type, &size);
+       char *buf = read_sha1_file(oid->hash, &type, &size);
        int offset = 0;
 
        if (!buf)
-               return error(_("Could not read object %s"), sha1_to_hex(sha1));
+               return error(_("Could not read object %s"), oid_to_hex(oid));
 
        assert(type == OBJ_TAG);
        while (offset < size && buf[offset] != '\n') {
@@ -574,7 +589,7 @@ int cmd_show(int argc, const char **argv, const char *prefix)
                const char *name = objects[i].name;
                switch (o->type) {
                case OBJ_BLOB:
-                       ret = show_blob_object(o->oid.hash, &rev, name);
+                       ret = show_blob_object(&o->oid, &rev, name);
                        break;
                case OBJ_TAG: {
                        struct tag *t = (struct tag *)o;
@@ -585,11 +600,11 @@ int cmd_show(int argc, const char **argv, const char *prefix)
                                        diff_get_color_opt(&rev.diffopt, DIFF_COMMIT),
                                        t->tag,
                                        diff_get_color_opt(&rev.diffopt, DIFF_RESET));
-                       ret = show_tag_object(o->oid.hash, &rev);
+                       ret = show_tag_object(&o->oid, &rev);
                        rev.shown_one = 1;
                        if (ret)
                                break;
-                       o = parse_object(t->tagged->oid.hash);
+                       o = parse_object(&t->tagged->oid);
                        if (!o)
                                ret = error(_("Could not read object %s"),
                                            oid_to_hex(&t->tagged->oid));
@@ -809,7 +824,7 @@ static int git_format_config(const char *var, const char *value, void *cb)
                return 0;
        }
        if (!strcmp(var, "format.from")) {
-               int b = git_config_maybe_bool(var, value);
+               int b = git_parse_maybe_bool(value);
                free(from);
                if (b < 0)
                        from = xstrdup(value);
@@ -835,8 +850,10 @@ static int open_next_file(struct commit *commit, const char *subject,
        if (output_directory) {
                strbuf_addstr(&filename, output_directory);
                if (filename.len >=
-                   PATH_MAX - FORMAT_PATCH_NAME_MAX - suffix_len)
+                   PATH_MAX - FORMAT_PATCH_NAME_MAX - suffix_len) {
+                       strbuf_release(&filename);
                        return error(_("name of output directory is too long"));
+               }
                strbuf_complete(&filename, '/');
        }
 
@@ -850,8 +867,11 @@ static int open_next_file(struct commit *commit, const char *subject,
        if (!quiet)
                printf("%s\n", filename.buf + outdir_offset);
 
-       if ((rev->diffopt.file = fopen(filename.buf, "w")) == NULL)
-               return error(_("Cannot open patch file %s"), filename.buf);
+       if ((rev->diffopt.file = fopen(filename.buf, "w")) == NULL) {
+               error_errno(_("Cannot open patch file %s"), filename.buf);
+               strbuf_release(&filename);
+               return -1;
+       }
 
        strbuf_release(&filename);
        return 0;
@@ -871,8 +891,8 @@ static void get_patch_ids(struct rev_info *rev, struct patch_ids *ids)
        o2 = rev->pending.objects[1].item;
        flags1 = o1->flags;
        flags2 = o2->flags;
-       c1 = lookup_commit_reference(o1->oid.hash);
-       c2 = lookup_commit_reference(o2->oid.hash);
+       c1 = lookup_commit_reference(&o1->oid);
+       c2 = lookup_commit_reference(&o2->oid);
 
        if ((flags1 & UNINTERESTING) == (flags2 & UNINTERESTING))
                die(_("Not a range."));
@@ -903,8 +923,8 @@ static void get_patch_ids(struct rev_info *rev, struct patch_ids *ids)
 static void gen_message_id(struct rev_info *info, char *base)
 {
        struct strbuf buf = STRBUF_INIT;
-       strbuf_addf(&buf, "%s.%lu.git.%s", base,
-                   (unsigned long) time(NULL),
+       strbuf_addf(&buf, "%s.%"PRItime".git.%s", base,
+                   (timestamp_t) time(NULL),
                    git_committer_info(IDENT_NO_NAME|IDENT_NO_DATE|IDENT_STRICT));
        info->message_id = strbuf_detach(&buf, NULL);
 }
@@ -989,8 +1009,7 @@ static void make_cover_letter(struct rev_info *rev, int use_stdout,
            open_next_file(NULL, rev->numbered_files ? NULL : "cover-letter", rev, quiet))
                return;
 
-       log_write_email_headers(rev, head, &pp.subject, &pp.after_subject,
-                               &need_8bit_cte);
+       log_write_email_headers(rev, head, &pp.after_subject, &need_8bit_cte);
 
        for (i = 0; !need_8bit_cte && i < nr; i++) {
                const char *buf = get_commit_buffer(list[i], NULL);
@@ -1005,6 +1024,8 @@ static void make_cover_letter(struct rev_info *rev, int use_stdout,
        msg = body;
        pp.fmt = CMIT_FMT_EMAIL;
        pp.date_mode.type = DATE_RFC2822;
+       pp.rev = rev;
+       pp.print_email_subject = 1;
        pp_user_info(&pp, NULL, &sb, committer, encoding);
        pp_title_line(&pp, &msg, &sb, encoding, need_8bit_cte);
        pp_remainder(&pp, &msg, &sb, 0);
@@ -1035,9 +1056,9 @@ static void make_cover_letter(struct rev_info *rev, int use_stdout,
 
        diff_setup_done(&opts);
 
-       diff_tree_sha1(origin->tree->object.oid.hash,
-                      head->tree->object.oid.hash,
-                      "", &opts);
+       diff_tree_oid(&origin->tree->object.oid,
+                     &head->tree->object.oid,
+                     "", &opts);
        diffcore_std(&opts);
        diff_flush(&opts);
 
@@ -1083,8 +1104,7 @@ static const char *set_outdir(const char *prefix, const char *output_directory)
        if (!output_directory)
                return prefix;
 
-       return xstrdup(prefix_filename(prefix, outdir_offset,
-                                      output_directory));
+       return prefix_filename(prefix, output_directory);
 }
 
 static const char * const builtin_format_patch_usage[] = {
@@ -1111,6 +1131,11 @@ static int subject_prefix_callback(const struct option *opt, const char *arg,
        return 0;
 }
 
+static int rfc_callback(const struct option *opt, const char *arg, int unset)
+{
+       return subject_prefix_callback(opt, "RFC PATCH", unset);
+}
+
 static int numbered_cmdline_opt = 0;
 
 static int numbered_callback(const struct option *opt, const char *arg,
@@ -1247,11 +1272,11 @@ static struct commit *get_base_commit(const char *base_commit,
                if (upstream) {
                        struct commit_list *base_list;
                        struct commit *commit;
-                       unsigned char sha1[20];
+                       struct object_id oid;
 
-                       if (get_sha1(upstream, sha1))
+                       if (get_oid(upstream, &oid))
                                die(_("Failed to resolve '%s' as a valid ref."), upstream);
-                       commit = lookup_commit_or_die(sha1, "upstream base");
+                       commit = lookup_commit_or_die(&oid, "upstream base");
                        base_list = get_merge_bases_many(commit, total, list);
                        /* There should be one and only one merge base. */
                        if (!base_list || base_list->next)
@@ -1286,7 +1311,7 @@ static struct commit *get_base_commit(const char *base_commit,
 
                if (rev_nr % 2)
                        rev[i] = rev[2 * i];
-               rev_nr = (rev_nr + 1) / 2;
+               rev_nr = DIV_ROUND_UP(rev_nr, 2);
        }
 
        if (!in_merge_bases(base, rev[0]))
@@ -1338,15 +1363,15 @@ static void prepare_bases(struct base_tree_info *bases,
         * and stuff them in bases structure.
         */
        while ((commit = get_revision(&revs)) != NULL) {
-               unsigned char sha1[20];
+               struct object_id oid;
                struct object_id *patch_id;
                if (commit->util)
                        continue;
-               if (commit_patch_id(commit, &diffopt, sha1, 0))
+               if (commit_patch_id(commit, &diffopt, &oid, 0))
                        die(_("cannot get patch id"));
                ALLOC_GROW(bases->patch_id, bases->nr_patch_id + 1, bases->alloc_patch_id);
                patch_id = bases->patch_id + bases->nr_patch_id;
-               hashcpy(patch_id->hash, sha1);
+               oidcpy(patch_id, &oid);
                bases->nr_patch_id++;
        }
 }
@@ -1418,6 +1443,9 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
                            N_("start numbering patches at <n> instead of 1")),
                OPT_INTEGER('v', "reroll-count", &reroll_count,
                            N_("mark the series as Nth re-roll")),
+               { OPTION_CALLBACK, 0, "rfc", &rev, NULL,
+                           N_("Use [RFC PATCH] instead of [PATCH]"),
+                           PARSE_OPT_NOARG | PARSE_OPT_NONEG, rfc_callback },
                { OPTION_CALLBACK, 0, "subject-prefix", &rev, N_("prefix"),
                            N_("Use [<prefix>] instead of [PATCH]"),
                            PARSE_OPT_NONEG, subject_prefix_callback },
@@ -1556,7 +1584,7 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
        if (numbered && keep_subject)
                die (_("-n and -k are mutually exclusive."));
        if (keep_subject && subject_prefix)
-               die (_("--subject-prefix and -k are mutually exclusive."));
+               die (_("--subject-prefix/--rfc and -k are mutually exclusive."));
        rev.preserve_subject = keep_subject;
 
        argc = setup_revisions(argc, argv, &rev, &s_r_opt);
@@ -1627,10 +1655,10 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
                        check_head = 1;
 
                if (check_head) {
-                       unsigned char sha1[20];
+                       struct object_id oid;
                        const char *ref, *v;
                        ref = resolve_ref_unsafe("HEAD", RESOLVE_REF_READING,
-                                                sha1, NULL);
+                                                oid.hash, NULL);
                        if (ref && skip_prefix(ref, "refs/heads/", &v))
                                branch_name = xstrdup(v);
                        else
@@ -1675,16 +1703,16 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
                /* nothing to do */
                return 0;
        total = nr;
-       if (!keep_subject && auto_number && total > 1)
-               numbered = 1;
-       if (numbered)
-               rev.total = total + start_number - 1;
        if (cover_letter == -1) {
                if (config_cover_letter == COVER_AUTO)
                        cover_letter = (total > 1);
                else
                        cover_letter = (config_cover_letter == COVER_ON);
        }
+       if (!keep_subject && auto_number && (total > 1 || cover_letter))
+               numbered = 1;
+       if (numbered)
+               rev.total = total + start_number - 1;
 
        if (!signature) {
                ; /* --no-signature inhibits all signatures */
@@ -1802,9 +1830,9 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
 
 static int add_pending_commit(const char *arg, struct rev_info *revs, int flags)
 {
-       unsigned char sha1[20];
-       if (get_sha1(arg, sha1) == 0) {
-               struct commit *commit = lookup_commit_reference(sha1);
+       struct object_id oid;
+       if (get_oid(arg, &oid) == 0) {
+               struct commit *commit = lookup_commit_reference(&oid);
                if (commit) {
                        commit->object.flags |= flags;
                        add_pending_object(revs, &commit->object, arg);