Merge branch 'mc/describe-first-parent'
[gitweb.git] / builtin / log.c
index 8f0b2e84fef5d1b9c07ea8846c9fbc1318d8d51b..6e56a50002194e0a452266a580932b9e4e9647c9 100644 (file)
@@ -23,6 +23,7 @@
 #include "streaming.h"
 #include "version.h"
 #include "mailmap.h"
+#include "gpg-interface.h"
 
 /* Set a default date-time format for git log ("log.date" config variable) */
 static const char *default_date_mode = NULL;
@@ -36,7 +37,7 @@ static const char *fmt_patch_subject_prefix = "PATCH";
 static const char *fmt_pretty;
 
 static const char * const builtin_log_usage[] = {
-       N_("git log [<options>] [<since>..<until>] [[--] <path>...]\n")
+       N_("git log [<options>] [<revision range>] [[--] <path>...]\n")
        N_("   or: git show [options] <object>..."),
        NULL
 };
@@ -99,9 +100,9 @@ static void cmd_log_init_finish(int argc, const char **argv, const char *prefix,
        int quiet = 0, source = 0, mailmap = 0;
 
        const struct option builtin_log_options[] = {
-               OPT_BOOLEAN(0, "quiet", &quiet, N_("suppress diff output")),
-               OPT_BOOLEAN(0, "source", &source, N_("show source")),
-               OPT_BOOLEAN(0, "use-mailmap", &mailmap, N_("Use mail map file")),
+               OPT_BOOL(0, "quiet", &quiet, N_("suppress diff output")),
+               OPT_BOOL(0, "source", &source, N_("show source")),
+               OPT_BOOL(0, "use-mailmap", &mailmap, N_("Use mail map file")),
                { OPTION_CALLBACK, 0, "decorate", NULL, NULL, N_("decorate options"),
                  PARSE_OPT_OPTARG, decorate_callback},
                OPT_END()
@@ -367,6 +368,8 @@ static int git_log_config(const char *var, const char *value, void *cb)
 
        if (grep_config(var, value, cb) < 0)
                return -1;
+       if (git_gpg_config(var, value, cb) < 0)
+               return -1;
        return git_diff_ui_config(var, value, cb);
 }
 
@@ -619,6 +622,14 @@ static void add_header(const char *value)
 static int thread;
 static int do_signoff;
 static const char *signature = git_version_string;
+static int config_cover_letter;
+
+enum {
+       COVER_UNSET,
+       COVER_OFF,
+       COVER_ON,
+       COVER_AUTO
+};
 
 static int git_format_config(const char *var, const char *value, void *cb)
 {
@@ -680,6 +691,14 @@ static int git_format_config(const char *var, const char *value, void *cb)
        }
        if (!strcmp(var, "format.signature"))
                return git_config_string(&signature, var, value);
+       if (!strcmp(var, "format.coverletter")) {
+               if (value && !strcasecmp(value, "auto")) {
+                       config_cover_letter = COVER_AUTO;
+                       return 0;
+               }
+               config_cover_letter = git_config_bool(var, value) ? COVER_ON : COVER_OFF;
+               return 0;
+       }
 
        return git_log_config(var, value, cb);
 }
@@ -791,9 +810,37 @@ static void add_branch_description(struct strbuf *buf, const char *branch_name)
        }
 }
 
+static char *find_branch_name(struct rev_info *rev)
+{
+       int i, positive = -1;
+       unsigned char branch_sha1[20];
+       const unsigned char *tip_sha1;
+       const char *ref;
+       char *full_ref, *branch = NULL;
+
+       for (i = 0; i < rev->cmdline.nr; i++) {
+               if (rev->cmdline.rev[i].flags & UNINTERESTING)
+                       continue;
+               if (positive < 0)
+                       positive = i;
+               else
+                       return NULL;
+       }
+       if (positive < 0)
+               return NULL;
+       ref = rev->cmdline.rev[positive].name;
+       tip_sha1 = rev->cmdline.rev[positive].item->sha1;
+       if (dwim_ref(ref, strlen(ref), branch_sha1, &full_ref) &&
+           !prefixcmp(full_ref, "refs/heads/") &&
+           !hashcmp(tip_sha1, branch_sha1))
+               branch = xstrdup(full_ref + strlen("refs/heads/"));
+       free(full_ref);
+       return branch;
+}
+
 static void make_cover_letter(struct rev_info *rev, int use_stdout,
                              struct commit *origin,
-                             int nr, struct commit **list, struct commit *head,
+                             int nr, struct commit **list,
                              const char *branch_name,
                              int quiet)
 {
@@ -807,6 +854,7 @@ static void make_cover_letter(struct rev_info *rev, int use_stdout,
        struct diff_options opts;
        int need_8bit_cte = 0;
        struct pretty_print_context pp = {0};
+       struct commit *head = list[0];
 
        if (rev->commit_format != CMIT_FMT_EMAIL)
                die(_("Cover letter needs email format"));
@@ -824,6 +872,9 @@ static void make_cover_letter(struct rev_info *rev, int use_stdout,
                if (has_non_ascii(list[i]->buffer))
                        need_8bit_cte = 1;
 
+       if (!branch_name)
+               branch_name = find_branch_name(rev);
+
        msg = body;
        pp.fmt = CMIT_FMT_EMAIL;
        pp.date_mode = DATE_RFC2822;
@@ -1030,45 +1081,6 @@ static int cc_callback(const struct option *opt, const char *arg, int unset)
        return 0;
 }
 
-static char *find_branch_name(struct rev_info *rev)
-{
-       int i, positive = -1;
-       unsigned char branch_sha1[20];
-       const unsigned char *tip_sha1;
-       const char *ref;
-       char *full_ref, *branch = NULL;
-
-       for (i = 0; i < rev->cmdline.nr; i++) {
-               if (rev->cmdline.rev[i].flags & UNINTERESTING)
-                       continue;
-               if (positive < 0)
-                       positive = i;
-               else
-                       return NULL;
-       }
-       if (0 <= positive) {
-               ref = rev->cmdline.rev[positive].name;
-               tip_sha1 = rev->cmdline.rev[positive].item->sha1;
-       } else if (!rev->cmdline.nr && rev->pending.nr == 1 &&
-                  !strcmp(rev->pending.objects[0].name, "HEAD")) {
-               /*
-                * No actual ref from command line, but "HEAD" from
-                * rev->def was added in setup_revisions()
-                * e.g. format-patch --cover-letter -12
-                */
-               ref = "HEAD";
-               tip_sha1 = rev->pending.objects[0].item->sha1;
-       } else {
-               return NULL;
-       }
-       if (dwim_ref(ref, strlen(ref), branch_sha1, &full_ref) &&
-           !prefixcmp(full_ref, "refs/heads/") &&
-           !hashcmp(tip_sha1, branch_sha1))
-               branch = xstrdup(full_ref + strlen("refs/heads/"));
-       free(full_ref);
-       return branch;
-}
-
 int cmd_format_patch(int argc, const char **argv, const char *prefix)
 {
        struct commit *commit;
@@ -1080,13 +1092,12 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
        int start_number = -1;
        int just_numbers = 0;
        int ignore_if_in_upstream = 0;
-       int cover_letter = 0;
+       int cover_letter = -1;
        int boundary_count = 0;
        int no_binary_diff = 0;
-       struct commit *origin = NULL, *head = NULL;
+       struct commit *origin = NULL;
        const char *in_reply_to = NULL;
        struct patch_ids ids;
-       char *add_signoff = NULL;
        struct strbuf buf = STRBUF_INIT;
        int use_patch_format = 0;
        int quiet = 0;
@@ -1099,12 +1110,12 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
                { OPTION_CALLBACK, 'N', "no-numbered", &numbered, NULL,
                            N_("use [PATCH] even with multiple patches"),
                            PARSE_OPT_NOARG, no_numbered_callback },
-               OPT_BOOLEAN('s', "signoff", &do_signoff, N_("add Signed-off-by:")),
-               OPT_BOOLEAN(0, "stdout", &use_stdout,
+               OPT_BOOL('s', "signoff", &do_signoff, N_("add Signed-off-by:")),
+               OPT_BOOL(0, "stdout", &use_stdout,
                            N_("print patches to standard out")),
-               OPT_BOOLEAN(0, "cover-letter", &cover_letter,
+               OPT_BOOL(0, "cover-letter", &cover_letter,
                            N_("generate a cover letter")),
-               OPT_BOOLEAN(0, "numbered-files", &just_numbers,
+               OPT_BOOL(0, "numbered-files", &just_numbers,
                            N_("use simple number sequence for output file names")),
                OPT_STRING(0, "suffix", &fmt_patch_suffix, N_("sfx"),
                            N_("use <sfx> instead of '.patch'")),
@@ -1193,16 +1204,6 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
                rev.subject_prefix = strbuf_detach(&sprefix, NULL);
        }
 
-       if (do_signoff) {
-               const char *committer;
-               const char *endpos;
-               committer = git_committer_info(IDENT_STRICT);
-               endpos = strchr(committer, '>');
-               if (!endpos)
-                       die(_("bogus committer info %s"), committer);
-               add_signoff = xmemdupz(committer, endpos - committer + 1);
-       }
-
        for (i = 0; i < extra_hdr.nr; i++) {
                strbuf_addstr(&buf, extra_hdr.items[i].string);
                strbuf_addch(&buf, '\n');
@@ -1288,28 +1289,36 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
        }
 
        if (rev.pending.nr == 1) {
+               int check_head = 0;
+
                if (rev.max_count < 0 && !rev.show_root_diff) {
                        /*
                         * This is traditional behaviour of "git format-patch
                         * origin" that prepares what the origin side still
                         * does not have.
                         */
-                       unsigned char sha1[20];
-                       const char *ref;
-
                        rev.pending.objects[0].item->flags |= UNINTERESTING;
                        add_head_to_pending(&rev);
-                       ref = resolve_ref_unsafe("HEAD", sha1, 1, NULL);
-                       if (ref && !prefixcmp(ref, "refs/heads/"))
-                               branch_name = xstrdup(ref + strlen("refs/heads/"));
-                       else
-                               branch_name = xstrdup(""); /* no branch */
+                       check_head = 1;
                }
                /*
                 * Otherwise, it is "format-patch -22 HEAD", and/or
                 * "format-patch --root HEAD".  The user wants
                 * get_revision() to do the usual traversal.
                 */
+
+               if (!strcmp(rev.pending.objects[0].name, "HEAD"))
+                       check_head = 1;
+
+               if (check_head) {
+                       unsigned char sha1[20];
+                       const char *ref;
+                       ref = resolve_ref_unsafe("HEAD", sha1, 1, NULL);
+                       if (ref && !prefixcmp(ref, "refs/heads/"))
+                               branch_name = xstrdup(ref + strlen("refs/heads/"));
+                       else
+                               branch_name = xstrdup(""); /* no branch */
+               }
        }
 
        /*
@@ -1318,29 +1327,6 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
         */
        rev.show_root_diff = 1;
 
-       if (cover_letter) {
-               /*
-                * NEEDSWORK:randomly pick one positive commit to show
-                * diffstat; this is often the tip and the command
-                * happens to do the right thing in most cases, but a
-                * complex command like "--cover-letter a b c ^bottom"
-                * picks "c" and shows diffstat between bottom..c
-                * which may not match what the series represents at
-                * all and totally broken.
-                */
-               int i;
-               for (i = 0; i < rev.pending.nr; i++) {
-                       struct object *o = rev.pending.objects[i].item;
-                       if (!(o->flags & UNINTERESTING))
-                               head = (struct commit *)o;
-               }
-               /* There is nothing to show; it is not an error, though. */
-               if (!head)
-                       return 0;
-               if (!branch_name)
-                       branch_name = find_branch_name(&rev);
-       }
-
        if (ignore_if_in_upstream) {
                /* Don't say anything if head and upstream are the same. */
                if (rev.pending.nr == 2) {
@@ -1372,11 +1358,21 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
                list = xrealloc(list, nr * sizeof(list[0]));
                list[nr - 1] = commit;
        }
+       if (nr == 0)
+               /* 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 (in_reply_to || thread || cover_letter)
                rev.ref_message_ids = xcalloc(1, sizeof(struct string_list));
        if (in_reply_to) {
@@ -1389,11 +1385,11 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
                if (thread)
                        gen_message_id(&rev, "cover");
                make_cover_letter(&rev, use_stdout,
-                                 origin, nr, list, head, branch_name, quiet);
+                                 origin, nr, list, branch_name, quiet);
                total++;
                start_number--;
        }
-       rev.add_signoff = add_signoff;
+       rev.add_signoff = do_signoff;
        while (0 <= --nr) {
                int shown;
                commit = list[nr];