consolidate two copies of new style object header parsing code.
[gitweb.git] / builtin-log.c
index 576703c47ec84c4028b0ca40985888a61556f3d2..fbc58bbcab1a992efb6ee359171d7ed6f0c52ab9 100644 (file)
 #include "revision.h"
 #include "log-tree.h"
 #include "builtin.h"
+#include <time.h>
+#include <sys/time.h>
 
-static int cmd_log_wc(int argc, const char **argv, char **envp,
+/* this is in builtin-diff.c */
+void add_head(struct rev_info *revs);
+
+static void cmd_log_init(int argc, const char **argv, const char *prefix,
                      struct rev_info *rev)
 {
-       struct commit *commit;
-
        rev->abbrev = DEFAULT_ABBREV;
        rev->commit_format = CMIT_FMT_DEFAULT;
        rev->verbose_header = 1;
        argc = setup_revisions(argc, argv, rev, "HEAD");
-
+       if (rev->diffopt.pickaxe || rev->diffopt.filter)
+               rev->always_show_header = 0;
        if (argc > 1)
                die("unrecognized argument: %s", argv[1]);
+}
+
+static int cmd_log_walk(struct rev_info *rev)
+{
+       struct commit *commit;
 
        prepare_revision_walk(rev);
-       setup_pager();
        while ((commit = get_revision(rev)) != NULL) {
                log_tree_commit(rev, commit);
                free(commit->buffer);
                commit->buffer = NULL;
+               free_commit_list(commit->parents);
+               commit->parents = NULL;
        }
        return 0;
 }
 
-int cmd_whatchanged(int argc, const char **argv, char **envp)
+int cmd_whatchanged(int argc, const char **argv, const char *prefix)
 {
        struct rev_info rev;
 
-       init_revisions(&rev);
+       git_config(git_diff_ui_config);
+       init_revisions(&rev, prefix);
        rev.diff = 1;
        rev.diffopt.recursive = 1;
-       return cmd_log_wc(argc, argv, envp, &rev);
+       rev.simplify_history = 0;
+       cmd_log_init(argc, argv, prefix, &rev);
+       if (!rev.diffopt.output_format)
+               rev.diffopt.output_format = DIFF_FORMAT_RAW;
+       return cmd_log_walk(&rev);
 }
 
-int cmd_show(int argc, const char **argv, char **envp)
+int cmd_show(int argc, const char **argv, const char *prefix)
 {
        struct rev_info rev;
 
-       init_revisions(&rev);
+       git_config(git_diff_ui_config);
+       init_revisions(&rev, prefix);
        rev.diff = 1;
        rev.diffopt.recursive = 1;
        rev.combine_merges = 1;
@@ -56,17 +72,19 @@ int cmd_show(int argc, const char **argv, char **envp)
        rev.always_show_header = 1;
        rev.ignore_merges = 0;
        rev.no_walk = 1;
-       return cmd_log_wc(argc, argv, envp, &rev);
+       cmd_log_init(argc, argv, prefix, &rev);
+       return cmd_log_walk(&rev);
 }
 
-int cmd_log(int argc, const char **argv, char **envp)
+int cmd_log(int argc, const char **argv, const char *prefix)
 {
        struct rev_info rev;
 
-       init_revisions(&rev);
+       git_config(git_diff_ui_config);
+       init_revisions(&rev, prefix);
        rev.always_show_header = 1;
-       rev.diffopt.recursive = 1;
-       return cmd_log_wc(argc, argv, envp, &rev);
+       cmd_log_init(argc, argv, prefix, &rev);
+       return cmd_log_walk(&rev);
 }
 
 static int istitlechar(char c)
@@ -75,14 +93,43 @@ static int istitlechar(char c)
                (c >= '0' && c <= '9') || c == '.' || c == '_';
 }
 
-static void reopen_stdout(struct commit *commit, int nr)
+static char *extra_headers = NULL;
+static int extra_headers_size = 0;
+
+static int git_format_config(const char *var, const char *value)
+{
+       if (!strcmp(var, "format.headers")) {
+               int len = strlen(value);
+               extra_headers_size += len + 1;
+               extra_headers = xrealloc(extra_headers, extra_headers_size);
+               extra_headers[extra_headers_size - len - 1] = 0;
+               strcat(extra_headers, value);
+               return 0;
+       }
+       if (!strcmp(var, "diff.color")) {
+               return 0;
+       }
+       return git_diff_ui_config(var, value);
+}
+
+
+static FILE *realstdout = NULL;
+static const char *output_directory = NULL;
+
+static void reopen_stdout(struct commit *commit, int nr, int keep_subject)
 {
        char filename[1024];
        char *sol;
-       int len;
+       int len = 0;
 
+       if (output_directory) {
+               strlcpy(filename, output_directory, 1010);
+               len = strlen(filename);
+               if (filename[len - 1] != '/')
+                       filename[len++] = '/';
+       }
 
-       sprintf(filename, "%04d", nr);
+       sprintf(filename + len, "%04d", nr);
        len = strlen(filename);
 
        sol = strstr(commit->buffer, "\n\n");
@@ -91,7 +138,7 @@ static void reopen_stdout(struct commit *commit, int nr)
 
                sol += 2;
                /* strip [PATCH] or [PATCH blabla] */
-               if (!strncmp(sol, "[PATCH", 6)) {
+               if (!keep_subject && !strncmp(sol, "[PATCH", 6)) {
                        char *eos = strchr(sol + 6, ']');
                        if (eos) {
                                while (isspace(*eos))
@@ -117,58 +164,269 @@ static void reopen_stdout(struct commit *commit, int nr)
                        len--;
        }
        strcpy(filename + len, ".txt");
-       fprintf(stderr, "%s\n", filename);
+       fprintf(realstdout, "%s\n", filename);
        freopen(filename, "w", stdout);
 }
 
-int cmd_format_patch(int argc, const char **argv, char **envp)
+static int get_patch_id(struct commit *commit, struct diff_options *options,
+               unsigned char *sha1)
+{
+       diff_tree_sha1(commit->parents->item->object.sha1, commit->object.sha1,
+                       "", options);
+       diffcore_std(options);
+       return diff_flush_patch_id(options, sha1);
+}
+
+static void get_patch_ids(struct rev_info *rev, struct diff_options *options, const char *prefix)
+{
+       struct rev_info check_rev;
+       struct commit *commit;
+       struct object *o1, *o2;
+       unsigned flags1, flags2;
+       unsigned char sha1[20];
+
+       if (rev->pending.nr != 2)
+               die("Need exactly one range.");
+
+       o1 = rev->pending.objects[0].item;
+       flags1 = o1->flags;
+       o2 = rev->pending.objects[1].item;
+       flags2 = o2->flags;
+
+       if ((flags1 & UNINTERESTING) == (flags2 & UNINTERESTING))
+               die("Not a range.");
+
+       diff_setup(options);
+       options->recursive = 1;
+       if (diff_setup_done(options) < 0)
+               die("diff_setup_done failed");
+
+       /* given a range a..b get all patch ids for b..a */
+       init_revisions(&check_rev, prefix);
+       o1->flags ^= UNINTERESTING;
+       o2->flags ^= UNINTERESTING;
+       add_pending_object(&check_rev, o1, "o1");
+       add_pending_object(&check_rev, o2, "o2");
+       prepare_revision_walk(&check_rev);
+
+       while ((commit = get_revision(&check_rev)) != NULL) {
+               /* ignore merges */
+               if (commit->parents && commit->parents->next)
+                       continue;
+
+               if (!get_patch_id(commit, options, sha1))
+                       created_object(sha1, xcalloc(1, sizeof(struct object)));
+       }
+
+       /* reset for next revision walk */
+       clear_commit_marks((struct commit *)o1,
+                       SEEN | UNINTERESTING | SHOWN | ADDED);
+       clear_commit_marks((struct commit *)o2,
+                       SEEN | UNINTERESTING | SHOWN | ADDED);
+       o1->flags = flags1;
+       o2->flags = flags2;
+}
+
+static void gen_message_id(char *dest, unsigned int length, char *base)
+{
+       const char *committer = git_committer_info(1);
+       const char *email_start = strrchr(committer, '<');
+       const char *email_end = strrchr(committer, '>');
+       if(!email_start || !email_end || email_start > email_end - 1)
+               die("Could not extract email from committer identity.");
+       snprintf(dest, length, "%s.%lu.git.%.*s", base,
+                (unsigned long) time(NULL),
+                (int)(email_end - email_start - 1), email_start + 1);
+}
+
+int cmd_format_patch(int argc, const char **argv, const char *prefix)
 {
        struct commit *commit;
        struct commit **list = NULL;
        struct rev_info rev;
-       int nr = 0, total;
+       int nr = 0, total, i, j;
        int use_stdout = 0;
+       int numbered = 0;
+       int start_number = -1;
+       int keep_subject = 0;
+       int ignore_if_in_upstream = 0;
+       int thread = 0;
+       const char *in_reply_to = NULL;
+       struct diff_options patch_id_opts;
+       char *add_signoff = NULL;
+       char message_id[1024];
+       char ref_message_id[1024];
 
-       init_revisions(&rev);
+       setup_ident();
+       git_config(git_format_config);
+       init_revisions(&rev, prefix);
        rev.commit_format = CMIT_FMT_EMAIL;
        rev.verbose_header = 1;
        rev.diff = 1;
-       rev.diffopt.with_raw = 0;
-       rev.diffopt.with_stat = 1;
        rev.combine_merges = 0;
        rev.ignore_merges = 1;
-       rev.diffopt.output_format = DIFF_FORMAT_PATCH;
-       argc = setup_revisions(argc, argv, &rev, "HEAD");
+       rev.diffopt.msg_sep = "";
+       rev.diffopt.recursive = 1;
+
+       rev.extra_headers = extra_headers;
 
-       while (argc > 1) {
-               if (!strcmp(argv[1], "--stdout"))
+       /*
+        * Parse the arguments before setup_revisions(), or something
+        * like "git fmt-patch -o a123 HEAD^.." may fail; a123 is
+        * possibly a valid SHA1.
+        */
+       for (i = 1, j = 1; i < argc; i++) {
+               if (!strcmp(argv[i], "--stdout"))
                        use_stdout = 1;
+               else if (!strcmp(argv[i], "-n") ||
+                               !strcmp(argv[i], "--numbered"))
+                       numbered = 1;
+               else if (!strncmp(argv[i], "--start-number=", 15))
+                       start_number = strtol(argv[i] + 15, NULL, 10);
+               else if (!strcmp(argv[i], "--start-number")) {
+                       i++;
+                       if (i == argc)
+                               die("Need a number for --start-number");
+                       start_number = strtol(argv[i], NULL, 10);
+               }
+               else if (!strcmp(argv[i], "-k") ||
+                               !strcmp(argv[i], "--keep-subject")) {
+                       keep_subject = 1;
+                       rev.total = -1;
+               }
+               else if (!strcmp(argv[i], "--output-directory") ||
+                        !strcmp(argv[i], "-o")) {
+                       i++;
+                       if (argc <= i)
+                               die("Which directory?");
+                       if (output_directory)
+                               die("Two output directories?");
+                       output_directory = argv[i];
+               }
+               else if (!strcmp(argv[i], "--signoff") ||
+                        !strcmp(argv[i], "-s")) {
+                       const char *committer;
+                       const char *endpos;
+                       committer = git_committer_info(1);
+                       endpos = strchr(committer, '>');
+                       if (!endpos)
+                               die("bogos committer info %s\n", committer);
+                       add_signoff = xmalloc(endpos - committer + 2);
+                       memcpy(add_signoff, committer, endpos - committer + 1);
+                       add_signoff[endpos - committer + 1] = 0;
+               }
+               else if (!strcmp(argv[i], "--attach"))
+                       rev.mime_boundary = git_version_string;
+               else if (!strncmp(argv[i], "--attach=", 9))
+                       rev.mime_boundary = argv[i] + 9;
+               else if (!strcmp(argv[i], "--ignore-if-in-upstream"))
+                       ignore_if_in_upstream = 1;
+               else if (!strcmp(argv[i], "--thread"))
+                       thread = 1;
+               else if (!strncmp(argv[i], "--in-reply-to=", 14))
+                       in_reply_to = argv[i] + 14;
+               else if (!strcmp(argv[i], "--in-reply-to")) {
+                       i++;
+                       if (i == argc)
+                               die("Need a Message-Id for --in-reply-to");
+                       in_reply_to = argv[i];
+               }
                else
-                       die ("unrecognized argument: %s", argv[1]);
-               argc--;
-               argv++;
+                       argv[j++] = argv[i];
+       }
+       argc = j;
+
+       if (start_number < 0)
+               start_number = 1;
+       if (numbered && keep_subject)
+               die ("-n and -k are mutually exclusive.");
+
+       argc = setup_revisions(argc, argv, &rev, "HEAD");
+       if (argc > 1)
+               die ("unrecognized argument: %s", argv[1]);
+
+       if (!rev.diffopt.output_format)
+               rev.diffopt.output_format = DIFF_FORMAT_DIFFSTAT | DIFF_FORMAT_PATCH;
+
+       if (output_directory) {
+               if (use_stdout)
+                       die("standard output, or directory, which one?");
+               if (mkdir(output_directory, 0777) < 0 && errno != EEXIST)
+                       die("Could not create directory %s",
+                           output_directory);
        }
 
+       if (rev.pending.nr == 1) {
+               rev.pending.objects[0].item->flags |= UNINTERESTING;
+               add_head(&rev);
+       }
+
+       if (ignore_if_in_upstream)
+               get_patch_ids(&rev, &patch_id_opts, prefix);
+
+       if (!use_stdout)
+               realstdout = fdopen(dup(1), "w");
+
        prepare_revision_walk(&rev);
        while ((commit = get_revision(&rev)) != NULL) {
+               unsigned char sha1[20];
+
                /* ignore merges */
                if (commit->parents && commit->parents->next)
                        continue;
+
+               if (ignore_if_in_upstream &&
+                               !get_patch_id(commit, &patch_id_opts, sha1) &&
+                               lookup_object(sha1))
+                       continue;
+
                nr++;
-               list = realloc(list, nr * sizeof(list[0]));
+               list = xrealloc(list, nr * sizeof(list[0]));
                list[nr - 1] = commit;
        }
        total = nr;
+       if (numbered)
+               rev.total = total + start_number - 1;
+       rev.add_signoff = add_signoff;
+       rev.ref_message_id = in_reply_to;
        while (0 <= --nr) {
                int shown;
                commit = list[nr];
+               rev.nr = total - nr + (start_number - 1);
+               /* Make the second and subsequent mails replies to the first */
+               if (thread) {
+                       if (nr == (total - 2)) {
+                               strncpy(ref_message_id, message_id,
+                                       sizeof(ref_message_id));
+                               ref_message_id[sizeof(ref_message_id)-1]='\0';
+                               rev.ref_message_id = ref_message_id;
+                       }
+                       gen_message_id(message_id, sizeof(message_id),
+                                      sha1_to_hex(commit->object.sha1));
+                       rev.message_id = message_id;
+               }
                if (!use_stdout)
-                       reopen_stdout(commit, total - nr);
+                       reopen_stdout(commit, rev.nr, keep_subject);
                shown = log_tree_commit(&rev, commit);
                free(commit->buffer);
                commit->buffer = NULL;
-               if (shown)
-                       printf("-- \n%s\n\n", git_version_string);
+
+               /* We put one extra blank line between formatted
+                * patches and this flag is used by log-tree code
+                * to see if it needs to emit a LF before showing
+                * the log; when using one file per patch, we do
+                * not want the extra blank line.
+                */
+               if (!use_stdout)
+                       rev.shown_one = 0;
+               if (shown) {
+                       if (rev.mime_boundary)
+                               printf("\n--%s%s--\n\n\n",
+                                      mime_boundary_leader,
+                                      rev.mime_boundary);
+                       else
+                               printf("-- \n%s\n\n", git_version_string);
+               }
                if (!use_stdout)
                        fclose(stdout);
        }