Merge early parts of 'np/delta' branch

diff --git a/commit.c b/commit.c
index edd4dedcdd13c2c3fd02714ef282b173f7cec7fe..06d5439152cd835e4de11552ef09438ce14b4d1d 100644 (file)
--- a/commit.c
+++ b/commit.c
@@ -1,6 +1,6 @@
+#include "cache.h"
 #include "tag.h"
 #include "commit.h"
-#include "cache.h"
 
 int save_commit_buffer = 1;
 
@@ -212,7 +212,8 @@ int parse_commit_buffer(struct commit *item, void *buffer, unsigned long size)
        if (memcmp(bufptr, "tree ", 5))
                return error("bogus commit object %s", sha1_to_hex(item->object.sha1));
        if (get_sha1_hex(bufptr + 5, parent) < 0)
-               return error("bad tree pointer in commit %s\n", sha1_to_hex(item->object.sha1));
+               return error("bad tree pointer in commit %s",
+                            sha1_to_hex(item->object.sha1));
        item->tree = lookup_tree(parent);
        if (item->tree)
                n_refs++;
@@ -352,6 +353,21 @@ struct commit *pop_most_recent_commit(struct commit_list **list,
        return ret;
 }
 
+void clear_commit_marks(struct commit *commit, unsigned int mark)
+{
+       struct commit_list *parents;
+
+       parents = commit->parents;
+       commit->object.flags &= ~mark;
+       while (parents) {
+               struct commit *parent = parents->item;
+               if (parent && parent->object.parsed &&
+                   (parent->object.flags & mark))
+                       clear_commit_marks(parent, mark);
+               parents = parents->next;
+       }
+}
+
 /*
  * Generic support for pretty-printing the header
  */
@@ -411,33 +427,37 @@ static int is_empty_line(const char *line, int len)
        return !len;
 }
 
-static int add_parent_info(enum cmit_fmt fmt, char *buf, const char *line, int parents)
+static int add_merge_info(enum cmit_fmt fmt, char *buf, const struct commit *commit, int abbrev)
 {
-       int offset = 0;
+       struct commit_list *parent = commit->parents;
+       int offset;
 
-       if (fmt == CMIT_FMT_ONELINE)
-               return offset;
-       switch (parents) {
-       case 1:
-               break;
-       case 2:
-               /* Go back to the previous line: 40 characters of previous parent, and one '\n' */
-               offset = sprintf(buf, "Merge: %.40s\n", line-41);
-               /* Fallthrough */
-       default:
-               /* Replace the previous '\n' with a space */
-               buf[offset-1] = ' ';
-               offset += sprintf(buf + offset, "%.40s\n", line+7);
+       if ((fmt == CMIT_FMT_ONELINE) || !parent || !parent->next)
+               return 0;
+
+       offset = sprintf(buf, "Merge:");
+
+       while (parent) {
+               struct commit *p = parent->item;
+               const char *hex = abbrev
+                       ? find_unique_abbrev(p->object.sha1, abbrev)
+                       : sha1_to_hex(p->object.sha1);
+               char *dots = (abbrev && strlen(hex) != 40) ? "..." : "";
+               parent = parent->next;
+
+               offset += sprintf(buf + offset, " %s%s", hex, dots);
        }
+       buf[offset++] = '\n';
        return offset;
 }
 
-unsigned long pretty_print_commit(enum cmit_fmt fmt, const char *msg, unsigned long len, char *buf, unsigned long space)
+unsigned long pretty_print_commit(enum cmit_fmt fmt, const struct commit *commit, unsigned long len, char *buf, unsigned long space, int abbrev)
 {
        int hdr = 1, body = 0;
        unsigned long offset = 0;
-       int parents = 0;
        int indent = (fmt == CMIT_FMT_ONELINE) ? 0 : 4;
+       int parents_shown = 0;
+       const char *msg = commit->buffer;
 
        for (;;) {
                const char *line = msg;
@@ -473,9 +493,15 @@ unsigned long pretty_print_commit(enum cmit_fmt fmt, const char *msg, unsigned l
                        if (!memcmp(line, "parent ", 7)) {
                                if (linelen != 48)
                                        die("bad parent line in commit");
-                               offset += add_parent_info(fmt, buf + offset, line, ++parents);
+                               continue;
                        }
 
+                       if (!parents_shown) {
+                               offset += add_merge_info(fmt, buf + offset,
+                                                        commit, abbrev);
+                               parents_shown = 1;
+                               continue;
+                       }
                        /*
                         * MEDIUM == DEFAULT shows only author with dates.
                         * FULL shows both authors but not dates.
@@ -546,7 +572,7 @@ int count_parents(struct commit * commit)
 /*
  * Performs an in-place topological sort on the list supplied.
  */
-void sort_in_topological_order(struct commit_list ** list)
+void sort_in_topological_order(struct commit_list ** list, int lifo)
 {
        struct commit_list * next = *list;
        struct commit_list * work = NULL, **insert;
@@ -605,7 +631,10 @@ void sort_in_topological_order(struct commit_list ** list)
                }
                next=next->next;
        }
+
        /* process the list in topological order */
+       if (!lifo)
+               sort_by_date(&work);
        while (work) {
                struct commit * work_item = pop_commit(&work);
                struct sort_node * work_node = (struct sort_node *)work_item->object.util;
@@ -622,8 +651,12 @@ void sort_in_topological_order(struct commit_list ** list)
                                  * guaranteeing topological order.
                                  */
                                pn->indegree--;
-                               if (!pn->indegree) 
-                                       commit_list_insert(parent, &work);
+                               if (!pn->indegree) {
+                                       if (!lifo)
+                                               insert_by_date(parent, &work);
+                                       else
+                                               commit_list_insert(parent, &work);
+                               }
                        }
                        parents=parents->next;
                }