merge & sequencer: unify codepaths that write "Conflicts:" hint

Two identical loops in suggest_conflicts() in merge, and
do_recursive_merge() in sequencer, can use a single helper function
extracted from the latter that prepares the "Conflicts:" hint that
is meant to remind the user the paths for which merge conflicts had
to be resolved to write a better commit log message.

Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/builtin/merge.c b/builtin/merge.c
index f6894c7..d30cb60 100644 (file)
--- a/builtin/merge.c
+++ b/builtin/merge.c
@@ -28,6 +28,7 @@
 #include "remote.h"
 #include "fmt-merge-msg.h"
 #include "gpg-interface.h"
+#include "sequencer.h"
 
 #define DEFAULT_TWOHEAD (1<<0)
 #define DEFAULT_OCTOPUS (1<<1)
@@ -888,24 +889,15 @@ static int suggest_conflicts(void)
 {
        const char *filename;
        FILE *fp;
-       int pos;
+       struct strbuf msgbuf = STRBUF_INIT;
 
        filename = git_path("MERGE_MSG");
        fp = fopen(filename, "a");
        if (!fp)
                die_errno(_("Could not open '%s' for writing"), filename);
-       fprintf(fp, "\nConflicts:\n");
-       for (pos = 0; pos < active_nr; pos++) {
-               const struct cache_entry *ce = active_cache[pos];
-
-               if (ce_stage(ce)) {
-                       fprintf(fp, "\t%s\n", ce->name);
-                       while (pos + 1 < active_nr &&
-                                       !strcmp(ce->name,
-                                               active_cache[pos + 1]->name))
-                               pos++;
-               }
-       }
+
+       append_conflicts_hint(&msgbuf);
+       fputs(msgbuf.buf, fp);
        fclose(fp);
        rerere(allow_rerere_auto);
        printf(_("Automatic merge failed; "

diff --git a/sequencer.c b/sequencer.c
index 06e52b4..0f84bbe 100644 (file)
--- a/sequencer.c
+++ b/sequencer.c
@@ -287,6 +287,24 @@ static int fast_forward_to(const unsigned char *to, const unsigned char *from,
        return ret;
 }
 
+void append_conflicts_hint(struct strbuf *msgbuf)
+{
+       int i;
+
+       strbuf_addstr(msgbuf, "\nConflicts:\n");
+       for (i = 0; i < active_nr;) {
+               const struct cache_entry *ce = active_cache[i++];
+               if (ce_stage(ce)) {
+                       strbuf_addch(msgbuf, '\t');
+                       strbuf_addstr(msgbuf, ce->name);
+                       strbuf_addch(msgbuf, '\n');
+                       while (i < active_nr && !strcmp(ce->name,
+                                                       active_cache[i]->name))
+                               i++;
+               }
+       }
+}
+
 static int do_recursive_merge(struct commit *base, struct commit *next,
                              const char *base_label, const char *next_label,
                              unsigned char *head, struct strbuf *msgbuf,
@@ -328,21 +346,8 @@ static int do_recursive_merge(struct commit *base, struct commit *next,
        if (opts->signoff)
                append_signoff(msgbuf, 0, 0);
 
-       if (!clean) {
-               int i;
-               strbuf_addstr(msgbuf, "\nConflicts:\n");
-               for (i = 0; i < active_nr;) {
-                       const struct cache_entry *ce = active_cache[i++];
-                       if (ce_stage(ce)) {
-                               strbuf_addch(msgbuf, '\t');
-                               strbuf_addstr(msgbuf, ce->name);
-                               strbuf_addch(msgbuf, '\n');
-                               while (i < active_nr && !strcmp(ce->name,
-                                               active_cache[i]->name))
-                                       i++;
-                       }
-               }
-       }
+       if (!clean)
+               append_conflicts_hint(msgbuf);
 
        return !clean;
 }

diff --git a/sequencer.h b/sequencer.h
index 1fc22dc..c53519d 100644 (file)
--- a/sequencer.h
+++ b/sequencer.h
@@ -51,5 +51,6 @@ int sequencer_pick_revisions(struct replay_opts *opts);
 extern const char sign_off_header[];
 
 void append_signoff(struct strbuf *msgbuf, int ignore_footer, unsigned flag);
+void append_conflicts_hint(struct strbuf *msgbuf);
 
 #endif