unpack-trees: allow Porcelain to give different error messages
[gitweb.git] / log-tree.c
index dd94f393a06a0c8a7fc6420af0b9487df47ec4a4..d3fb0e520c749e0d57afaab7666861a1a4e7cd9f 100644 (file)
@@ -137,23 +137,95 @@ static int has_non_ascii(const char *s)
        return 0;
 }
 
-void show_log(struct rev_info *opt, const char *sep)
+void log_write_email_headers(struct rev_info *opt, const char *name,
+                            const char **subject_p,
+                            const char **extra_headers_p,
+                            int *need_8bit_cte_p)
+{
+       const char *subject = NULL;
+       const char *extra_headers = opt->extra_headers;
+
+       *need_8bit_cte_p = 0; /* unknown */
+       if (opt->total > 0) {
+               static char buffer[64];
+               snprintf(buffer, sizeof(buffer),
+                        "Subject: [%s %0*d/%d] ",
+                        opt->subject_prefix,
+                        digits_in_number(opt->total),
+                        opt->nr, opt->total);
+               subject = buffer;
+       } else if (opt->total == 0 && opt->subject_prefix && *opt->subject_prefix) {
+               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", name);
+       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];
+               *need_8bit_cte_p = -1; /* NEVER */
+               snprintf(subject_buffer, sizeof(subject_buffer) - 1,
+                        "%s"
+                        "MIME-Version: 1.0\n"
+                        "Content-Type: multipart/mixed;"
+                        " boundary=\"%s%s\"\n"
+                        "\n"
+                        "This is a multi-part message in MIME "
+                        "format.\n"
+                        "--%s%s\n"
+                        "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);
+               extra_headers = subject_buffer;
+
+               snprintf(buffer, sizeof(buffer) - 1,
+                        "--%s%s\n"
+                        "Content-Type: text/x-patch;"
+                        " name=\"%s.diff\"\n"
+                        "Content-Transfer-Encoding: 8bit\n"
+                        "Content-Disposition: %s;"
+                        " filename=\"%s.diff\"\n\n",
+                        mime_boundary_leader, opt->mime_boundary,
+                        name,
+                        opt->no_inline ? "attachment" : "inline",
+                        name);
+               opt->diffopt.stat_sep = buffer;
+       }
+       *subject_p = subject;
+       *extra_headers_p = extra_headers;
+}
+
+void show_log(struct rev_info *opt)
 {
        struct strbuf msgbuf;
        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;
        const char *subject = NULL, *extra_headers = opt->extra_headers;
        int need_8bit_cte = 0;
 
        opt->loginfo = NULL;
        if (!opt->verbose_header) {
-               if (opt->left_right) {
-                       if (commit->object.flags & BOUNDARY)
-                               putchar('-');
-                       else if (commit->object.flags & SYMMETRIC_LEFT)
+               if (commit->object.flags & BOUNDARY)
+                       putchar('-');
+               else if (commit->object.flags & UNINTERESTING)
+                       putchar('^');
+               else if (opt->left_right) {
+                       if (commit->object.flags & SYMMETRIC_LEFT)
                                putchar('<');
                        else
                                putchar('>');
@@ -167,18 +239,11 @@ void show_log(struct rev_info *opt, const char *sep)
        }
 
        /*
-        * The "oneline" format has several special cases:
-        *  - The pretty-printed commit lacks a newline at the end
-        *    of the buffer, but we do want to make sure that we
-        *    have a newline there. If the separator isn't already
-        *    a newline, add an extra one.
-        *  - unlike other log messages, the one-line format does
-        *    not have an empty line between entries.
+        * If use_terminator is set, add a newline at the end of the entry.
+        * Otherwise, add a diffopt.line_termination character before all
+        * entries but the first.  (IOW, as a separator between entries)
         */
-       extra = "";
-       if (*sep != '\n' && opt->commit_format == CMIT_FMT_ONELINE)
-               extra = "\n";
-       if (opt->shown_one && opt->commit_format != CMIT_FMT_ONELINE)
+       if (opt->shown_one && !opt->use_terminator)
                putchar(opt->diffopt.line_termination);
        opt->shown_one = 1;
 
@@ -187,72 +252,17 @@ void show_log(struct rev_info *opt, const char *sep)
         */
 
        if (opt->commit_format == CMIT_FMT_EMAIL) {
-               char *sha1 = sha1_to_hex(commit->object.sha1);
-               if (opt->total > 0) {
-                       static char buffer[64];
-                       snprintf(buffer, sizeof(buffer),
-                                       "Subject: [%s %0*d/%d] ",
-                                       opt->subject_prefix,
-                                       digits_in_number(opt->total),
-                                       opt->nr, opt->total);
-                       subject = buffer;
-               } else if (opt->total == 0 && opt->subject_prefix && *opt->subject_prefix) {
-                       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)
-                       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];
-
-                       need_8bit_cte = -1; /* never */
-                       snprintf(subject_buffer, sizeof(subject_buffer) - 1,
-                                "%s"
-                                "MIME-Version: 1.0\n"
-                                "Content-Type: multipart/mixed;"
-                                " boundary=\"%s%s\"\n"
-                                "\n"
-                                "This is a multi-part message in MIME "
-                                "format.\n"
-                                "--%s%s\n"
-                                "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);
-                       extra_headers = subject_buffer;
-
-                       snprintf(buffer, sizeof(buffer) - 1,
-                                "--%s%s\n"
-                                "Content-Type: text/x-patch;"
-                                " name=\"%s.diff\"\n"
-                                "Content-Transfer-Encoding: 8bit\n"
-                                "Content-Disposition: %s;"
-                                " filename=\"%s.diff\"\n\n",
-                                mime_boundary_leader, opt->mime_boundary,
-                                sha1,
-                                opt->no_inline ? "attachment" : "inline",
-                                sha1);
-                       opt->diffopt.stat_sep = buffer;
-               }
+               log_write_email_headers(opt, sha1_to_hex(commit->object.sha1),
+                                       &subject, &extra_headers,
+                                       &need_8bit_cte);
        } else if (opt->commit_format != CMIT_FMT_USERFORMAT) {
                fputs(diff_get_color_opt(&opt->diffopt, DIFF_COMMIT), stdout);
                if (opt->commit_format != CMIT_FMT_ONELINE)
                        fputs("commit ", stdout);
                if (commit->object.flags & BOUNDARY)
                        putchar('-');
+               else if (commit->object.flags & UNINTERESTING)
+                       putchar('^');
                else if (opt->left_right) {
                        if (commit->object.flags & SYMMETRIC_LEFT)
                                putchar('<');
@@ -274,13 +284,14 @@ void show_log(struct rev_info *opt, const char *sep)
                        show_reflog_message(opt->reflog_info,
                                    opt->commit_format == CMIT_FMT_ONELINE,
                                    opt->date_mode);
-                       if (opt->commit_format == CMIT_FMT_ONELINE) {
-                               printf("%s", sep);
+                       if (opt->commit_format == CMIT_FMT_ONELINE)
                                return;
-                       }
                }
        }
 
+       if (!commit->buffer)
+               return;
+
        /*
         * And then the pretty-printed message itself
         */
@@ -297,7 +308,9 @@ void show_log(struct rev_info *opt, const char *sep)
                printf("log size %i\n", (int)msgbuf.len);
 
        if (msgbuf.len)
-               printf("%s%s%s", msgbuf.buf, extra, sep);
+               fwrite(msgbuf.buf, sizeof(char), msgbuf.len, stdout);
+       if (opt->use_terminator)
+               putchar('\n');
        strbuf_release(&msgbuf);
 }
 
@@ -319,7 +332,7 @@ int log_tree_diff_flush(struct rev_info *opt)
                 * an extra newline between the end of log and the
                 * output for readability.
                 */
-               show_log(opt, opt->diffopt.msg_sep);
+               show_log(opt);
                if ((opt->diffopt.output_format & ~DIFF_FORMAT_NO_OUTPUT) &&
                    opt->verbose_header &&
                    opt->commit_format != CMIT_FMT_ONELINE) {
@@ -407,7 +420,7 @@ 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, "");
+               show_log(opt);
                shown = 1;
        }
        opt->loginfo = NULL;