Fix git-am safety checks
[gitweb.git] / log-tree.c
index 58b016378c153db0063dee556e1e4bacf64c6aed..fbe139920ab0eada09dc921c152236d9676da44c 100644 (file)
@@ -12,22 +12,112 @@ static void show_parents(struct commit *commit, int abbrev)
        }
 }
 
-void show_log(struct rev_info *opt, struct log_info *log, const char *sep)
+/*
+ * Search for "^[-A-Za-z]+: [^@]+@" pattern. It usually matches
+ * Signed-off-by: and Acked-by: lines.
+ */
+static int detect_any_signoff(char *letter, int size)
+{
+       char ch, *cp;
+       int seen_colon = 0;
+       int seen_at = 0;
+       int seen_name = 0;
+       int seen_head = 0;
+
+       cp = letter + size;
+       while (letter <= --cp && (ch = *cp) == '\n')
+               continue;
+
+       while (letter <= cp) {
+               ch = *cp--;
+               if (ch == '\n')
+                       break;
+
+               if (!seen_at) {
+                       if (ch == '@')
+                               seen_at = 1;
+                       continue;
+               }
+               if (!seen_colon) {
+                       if (ch == '@')
+                               return 0;
+                       else if (ch == ':')
+                               seen_colon = 1;
+                       else
+                               seen_name = 1;
+                       continue;
+               }
+               if (('A' <= ch && ch <= 'Z') ||
+                   ('a' <= ch && ch <= 'z') ||
+                   ch == '-') {
+                       seen_head = 1;
+                       continue;
+               }
+               /* no empty last line doesn't match */
+               return 0;
+       }
+       return seen_head && seen_name;
+}
+
+static int append_signoff(char *buf, int buf_sz, int at, const char *signoff)
+{
+       static const char signed_off_by[] = "Signed-off-by: ";
+       int signoff_len = strlen(signoff);
+       int has_signoff = 0;
+       char *cp = buf;
+
+       /* Do we have enough space to add it? */
+       if (buf_sz - at <= strlen(signed_off_by) + signoff_len + 3)
+               return at;
+
+       /* First see if we already have the sign-off by the signer */
+       while ((cp = strstr(cp, signed_off_by))) {
+
+               has_signoff = 1;
+
+               cp += strlen(signed_off_by);
+               if (cp + signoff_len >= buf + at)
+                       break;
+               if (strncmp(cp, signoff, signoff_len))
+                       continue;
+               if (!isspace(cp[signoff_len]))
+                       continue;
+               /* we already have him */
+               return at;
+       }
+
+       if (!has_signoff)
+               has_signoff = detect_any_signoff(buf, at);
+
+       if (!has_signoff)
+               buf[at++] = '\n';
+
+       strcpy(buf + at, signed_off_by);
+       at += strlen(signed_off_by);
+       strcpy(buf + at, signoff);
+       at += signoff_len;
+       buf[at++] = '\n';
+       buf[at] = 0;
+       return at;
+}
+
+void show_log(struct rev_info *opt, const char *sep)
 {
        static char this_header[16384];
+       struct log_info *log = opt->loginfo;
        struct commit *commit = log->commit, *parent = log->parent;
        int abbrev = opt->diffopt.abbrev;
        int abbrev_commit = opt->abbrev_commit ? opt->abbrev : 40;
        const char *extra;
        int len;
-       char *subject = NULL, *after_subject = NULL;
+       const char *subject = NULL, *extra_headers = opt->extra_headers;
 
        opt->loginfo = NULL;
        if (!opt->verbose_header) {
                fputs(diff_unique_abbrev(commit->object.sha1, abbrev_commit), stdout);
                if (opt->parents)
                        show_parents(commit, abbrev_commit);
-               putchar('\n');
+               putchar(opt->diffopt.line_termination);
                return;
        }
 
@@ -65,10 +155,16 @@ void show_log(struct rev_info *opt, struct log_info *log, const char *sep)
                        subject = "Subject: ";
 
                printf("From %s Mon Sep 17 00:00:00 2001\n", sha1);
+               if (opt->message_id)
+                       printf("Message-Id: <%s>\n", opt->message_id);
+               if (opt->ref_message_id)
+                       printf("In-Reply-To: <%s>\nReferences: <%s>\n",
+                              opt->ref_message_id, opt->ref_message_id);
                if (opt->mime_boundary) {
                        static char subject_buffer[1024];
                        static char buffer[1024];
                        snprintf(subject_buffer, sizeof(subject_buffer) - 1,
+                                "%s"
                                 "MIME-Version: 1.0\n"
                                 "Content-Type: multipart/mixed;\n"
                                 " boundary=\"%s%s\"\n"
@@ -79,9 +175,10 @@ void show_log(struct rev_info *opt, struct log_info *log, const char *sep)
                                 "Content-Type: text/plain; "
                                 "charset=UTF-8; format=fixed\n"
                                 "Content-Transfer-Encoding: 8bit\n\n",
+                                extra_headers ? extra_headers : "",
                                 mime_boundary_leader, opt->mime_boundary,
                                 mime_boundary_leader, opt->mime_boundary);
-                       after_subject = subject_buffer;
+                       extra_headers = subject_buffer;
 
                        snprintf(buffer, sizeof(buffer) - 1,
                                 "--%s%s\n"
@@ -95,7 +192,8 @@ void show_log(struct rev_info *opt, struct log_info *log, const char *sep)
                        opt->diffopt.stat_sep = buffer;
                }
        } else {
-               printf("%s%s",
+               printf("%s%s%s",
+                      diff_get_color(opt->diffopt.color_diff, DIFF_COMMIT),
                       opt->commit_format == CMIT_FMT_ONELINE ? "" : "commit ",
                       diff_unique_abbrev(commit->object.sha1, abbrev_commit));
                if (opt->parents)
@@ -104,13 +202,21 @@ void show_log(struct rev_info *opt, struct log_info *log, const char *sep)
                        printf(" (from %s)",
                               diff_unique_abbrev(parent->object.sha1,
                                                  abbrev_commit));
+               printf("%s",
+                      diff_get_color(opt->diffopt.color_diff, DIFF_RESET));
                putchar(opt->commit_format == CMIT_FMT_ONELINE ? ' ' : '\n');
        }
 
        /*
         * And then the pretty-printed message itself
         */
-       len = pretty_print_commit(opt->commit_format, commit, ~0u, this_header, sizeof(this_header), abbrev, subject, after_subject);
+       len = pretty_print_commit(opt->commit_format, commit, ~0u, this_header,
+                                 sizeof(this_header), abbrev, subject,
+                                 extra_headers, opt->relative_date);
+
+       if (opt->add_signoff)
+               len = append_signoff(this_header, sizeof(this_header), len,
+                                    opt->add_signoff);
        printf("%s%s%s", this_header, extra, sep);
 }
 
@@ -126,8 +232,22 @@ int log_tree_diff_flush(struct rev_info *opt)
                return 0;
        }
 
-       if (opt->loginfo && !opt->no_commit_id)
-               show_log(opt, opt->loginfo, opt->diffopt.with_stat ? "---\n" : "\n");
+       if (opt->loginfo && !opt->no_commit_id) {
+               /* When showing a verbose header (i.e. log message),
+                * and not in --pretty=oneline format, we would want
+                * an extra newline between the end of log and the
+                * output for readability.
+                */
+               show_log(opt, opt->diffopt.msg_sep);
+               if (opt->verbose_header &&
+                   opt->commit_format != CMIT_FMT_ONELINE) {
+                       int pch = DIFF_FORMAT_DIFFSTAT | DIFF_FORMAT_PATCH;
+                       if ((pch & opt->diffopt.output_format) == pch)
+                               printf("---%c", opt->diffopt.line_termination);
+                       else
+                               putchar(opt->diffopt.line_termination);
+               }
+       }
        diff_flush(&opt->diffopt);
        return 1;
 }
@@ -224,7 +344,7 @@ int log_tree_commit(struct rev_info *opt, struct commit *commit)
        shown = log_tree_diff(opt, commit, &log);
        if (!shown && opt->loginfo && opt->always_show_header) {
                log.parent = NULL;
-               show_log(opt, opt->loginfo, "");
+               show_log(opt, "");
                shown = 1;
        }
        opt->loginfo = NULL;