Add custom subject prefix support to format-patch (take 3)
[gitweb.git] / log-tree.c
index 031af88933fe1b21de2da701855b9e9604121d3c..dad551323082461c9fa1e5b9ad56a30d5cfc6343 100644 (file)
@@ -2,6 +2,7 @@
 #include "diff.h"
 #include "commit.h"
 #include "log-tree.h"
+#include "reflog-walk.h"
 
 static void show_parents(struct commit *commit, int abbrev)
 {
@@ -12,10 +13,58 @@ static void show_parents(struct commit *commit, int abbrev)
        }
 }
 
+/*
+ * 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)
 {
-       int signoff_len = strlen(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? */
@@ -23,58 +72,26 @@ static int append_signoff(char *buf, int buf_sz, int at, const char *signoff)
                return at;
 
        /* First see if we already have the sign-off by the signer */
-       while (1) {
-               cp = strstr(cp, signed_off_by);
-               if (!cp)
-                       break;
+       while ((cp = strstr(cp, signed_off_by))) {
+
+               has_signoff = 1;
+
                cp += strlen(signed_off_by);
-               if ((cp + signoff_len < buf + at) &&
-                   !strncmp(cp, signoff, signoff_len) &&
-                   isspace(cp[signoff_len]))
-                       return at; /* we already have him */
+               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;
        }
 
-       /* Does the last line already end with "^[-A-Za-z]+: [^@]+@"?
-        * If not, add a blank line to separate the message from
-        * the run of Signed-off-by: and Acked-by: lines.
-        */
-       {
-               char ch;
-               int seen_colon, seen_at, seen_name, seen_head, not_signoff;
-               seen_colon = 0;
-               seen_at = 0;
-               seen_name = 0;
-               seen_head = 0;
-               not_signoff = 0;
-               cp = buf + at;
-               while (buf <= --cp && (ch = *cp) == '\n')
-                       ;
-               while (!not_signoff && buf <= cp && (ch = *cp--) != '\n') {
-                       if (!seen_at) {
-                               if (ch == '@')
-                                       seen_at = 1;
-                               continue;
-                       }
-                       if (!seen_colon) {
-                               if (ch == '@')
-                                       not_signoff = 1;
-                               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;
-                       }
-                       not_signoff = 1;
-               }
-               if (not_signoff || !seen_head || !seen_name)
-                       buf[at++] = '\n';
-       }
+       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);
@@ -85,6 +102,16 @@ static int append_signoff(char *buf, int buf_sz, int at, const char *signoff)
        return at;
 }
 
+static unsigned int digits_in_number(unsigned int number)
+{
+       unsigned int i = 10, result = 1;
+       while (i <= number) {
+               i *= 10;
+               result++;
+       }
+       return result;
+}
+
 void show_log(struct rev_info *opt, const char *sep)
 {
        static char this_header[16384];
@@ -98,6 +125,14 @@ void show_log(struct rev_info *opt, const char *sep)
 
        opt->loginfo = NULL;
        if (!opt->verbose_header) {
+               if (opt->left_right) {
+                       if (commit->object.flags & BOUNDARY)
+                               putchar('-');
+                       else if (commit->object.flags & SYMMETRIC_LEFT)
+                               putchar('<');
+                       else
+                               putchar('>');
+               }
                fputs(diff_unique_abbrev(commit->object.sha1, abbrev_commit), stdout);
                if (opt->parents)
                        show_parents(commit, abbrev_commit);
@@ -118,7 +153,7 @@ void show_log(struct rev_info *opt, const char *sep)
        if (*sep != '\n' && opt->commit_format == CMIT_FMT_ONELINE)
                extra = "\n";
        if (opt->shown_one && opt->commit_format != CMIT_FMT_ONELINE)
-               putchar('\n');
+               putchar(opt->diffopt.line_termination);
        opt->shown_one = 1;
 
        /*
@@ -130,13 +165,20 @@ void show_log(struct rev_info *opt, const char *sep)
                if (opt->total > 0) {
                        static char buffer[64];
                        snprintf(buffer, sizeof(buffer),
-                                       "Subject: [PATCH %d/%d] ",
+                                       "Subject: [%s %0*d/%d] ",
+                                       opt->subject_prefix,
+                                       digits_in_number(opt->total),
                                        opt->nr, opt->total);
                        subject = buffer;
-               } else if (opt->total == 0)
-                       subject = "Subject: [PATCH] ";
-               else
+               } else if (opt->total == 0) {
+                       static char buffer[256];
+                       snprintf(buffer, sizeof(buffer),
+                                       "Subject: [%s] ",
+                                       opt->subject_prefix);
+                       subject = buffer;
+               } else {
                        subject = "Subject: ";
+               }
 
                printf("From %s Mon Sep 17 00:00:00 2001\n", sha1);
                if (opt->message_id)
@@ -150,7 +192,7 @@ void show_log(struct rev_info *opt, const char *sep)
                        snprintf(subject_buffer, sizeof(subject_buffer) - 1,
                                 "%s"
                                 "MIME-Version: 1.0\n"
-                                "Content-Type: multipart/mixed;\n"
+                                "Content-Type: multipart/mixed;"
                                 " boundary=\"%s%s\"\n"
                                 "\n"
                                 "This is a multi-part message in MIME "
@@ -166,20 +208,32 @@ void show_log(struct rev_info *opt, const char *sep)
 
                        snprintf(buffer, sizeof(buffer) - 1,
                                 "--%s%s\n"
-                                "Content-Type: text/x-patch;\n"
+                                "Content-Type: text/x-patch;"
                                 " name=\"%s.diff\"\n"
                                 "Content-Transfer-Encoding: 8bit\n"
-                                "Content-Disposition: inline;\n"
+                                "Content-Disposition: %s;"
                                 " filename=\"%s.diff\"\n\n",
                                 mime_boundary_leader, opt->mime_boundary,
-                                sha1, sha1);
+                                sha1,
+                                opt->no_inline ? "attachment" : "inline",
+                                sha1);
                        opt->diffopt.stat_sep = buffer;
                }
-       } else {
-               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));
+       } else if (opt->commit_format != CMIT_FMT_USERFORMAT) {
+               fputs(diff_get_color(opt->diffopt.color_diff, DIFF_COMMIT),
+                     stdout);
+               if (opt->commit_format != CMIT_FMT_ONELINE)
+                       fputs("commit ", stdout);
+               if (opt->left_right) {
+                       if (commit->object.flags & BOUNDARY)
+                               putchar('-');
+                       else if (commit->object.flags & SYMMETRIC_LEFT)
+                               putchar('<');
+                       else
+                               putchar('>');
+               }
+               fputs(diff_unique_abbrev(commit->object.sha1, abbrev_commit),
+                     stdout);
                if (opt->parents)
                        show_parents(commit, abbrev_commit);
                if (parent)
@@ -189,12 +243,23 @@ void show_log(struct rev_info *opt, const char *sep)
                printf("%s",
                       diff_get_color(opt->diffopt.color_diff, DIFF_RESET));
                putchar(opt->commit_format == CMIT_FMT_ONELINE ? ' ' : '\n');
+               if (opt->reflog_info) {
+                       show_reflog_message(opt->reflog_info,
+                                   opt->commit_format == CMIT_FMT_ONELINE,
+                                   opt->relative_date);
+                       if (opt->commit_format == CMIT_FMT_ONELINE) {
+                               printf("%s", sep);
+                               return;
+                       }
+               }
        }
 
        /*
         * And then the pretty-printed message itself
         */
-       len = pretty_print_commit(opt->commit_format, commit, ~0u, this_header, sizeof(this_header), abbrev, subject, extra_headers);
+       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,
@@ -225,35 +290,14 @@ int log_tree_diff_flush(struct rev_info *opt)
                    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);
+                               printf("---");
+                       putchar('\n');
                }
        }
        diff_flush(&opt->diffopt);
        return 1;
 }
 
-static int diff_root_tree(struct rev_info *opt,
-                         const unsigned char *new, const char *base)
-{
-       int retval;
-       void *tree;
-       struct tree_desc empty, real;
-
-       tree = read_object_with_reference(new, tree_type, &real.size, NULL);
-       if (!tree)
-               die("unable to read root tree (%s)", sha1_to_hex(new));
-       real.buf = tree;
-
-       empty.buf = "";
-       empty.size = 0;
-       retval = diff_tree(&empty, &real, base, &opt->diffopt);
-       free(tree);
-       log_tree_diff_flush(opt);
-       return retval;
-}
-
 static int do_diff_combined(struct rev_info *opt, struct commit *commit)
 {
        unsigned const char *sha1 = commit->object.sha1;
@@ -279,8 +323,10 @@ static int log_tree_diff(struct rev_info *opt, struct commit *commit, struct log
        /* Root commit? */
        parents = commit->parents;
        if (!parents) {
-               if (opt->show_root_diff)
-                       diff_root_tree(opt, sha1, "");
+               if (opt->show_root_diff) {
+                       diff_root_tree_sha1(sha1, "", &opt->diffopt);
+                       log_tree_diff_flush(opt);
+               }
                return !opt->loginfo;
        }