diffcore-rename: record filepair for rename src

This will allow us to later skip unmodified entries added due to "-C -C".
We might also want to do something similar to rename_dst side, but that
would only be for the sake of symmetry and not necessary for this series.

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

diff --git a/diffcore-rename.c b/diffcore-rename.c
index 6ab050d7b2c2fa065edc8e567c4eff0ecf1480c5..9ce81b6a0c48f0eb613fc4bc791c9c82e6a0c873 100644 (file)
--- a/diffcore-rename.c
+++ b/diffcore-rename.c
@@ -54,22 +54,23 @@ static struct diff_rename_dst *locate_rename_dst(struct diff_filespec *two,
 
 /* Table of rename/copy src files */
 static struct diff_rename_src {
-       struct diff_filespec *one;
+       struct diff_filepair *p;
        unsigned short score; /* to remember the break score */
 } *rename_src;
 static int rename_src_nr, rename_src_alloc;
 
-static struct diff_rename_src *register_rename_src(struct diff_filespec *one,
-                                                  unsigned short score)
+static struct diff_rename_src *register_rename_src(struct diff_filepair *p)
 {
        int first, last;
+       struct diff_filespec *one = p->one;
+       unsigned short score = p->score;
 
        first = 0;
        last = rename_src_nr;
        while (last > first) {
                int next = (last + first) >> 1;
                struct diff_rename_src *src = &(rename_src[next]);
-               int cmp = strcmp(one->path, src->one->path);
+               int cmp = strcmp(one->path, src->p->one->path);
                if (!cmp)
                        return src;
                if (cmp < 0) {
@@ -89,7 +90,7 @@ static struct diff_rename_src *register_rename_src(struct diff_filespec *one,
        if (first < rename_src_nr)
                memmove(rename_src + first + 1, rename_src + first,
                        (rename_src_nr - first - 1) * sizeof(*rename_src));
-       rename_src[first].one = one;
+       rename_src[first].p = p;
        rename_src[first].score = score;
        return &(rename_src[first]);
 }
@@ -204,7 +205,7 @@ static void record_rename_pair(int dst_index, int src_index, int score)
        if (rename_dst[dst_index].pair)
                die("internal error: dst already matched.");
 
-       src = rename_src[src_index].one;
+       src = rename_src[src_index].p->one;
        src->rename_used++;
        src->count++;
 
@@ -384,7 +385,7 @@ static int find_exact_renames(void)
 
        init_hash(&file_table);
        for (i = 0; i < rename_src_nr; i++)
-               insert_file_table(&file_table, -1, i, rename_src[i].one);
+               insert_file_table(&file_table, -1, i, rename_src[i].p->one);
 
        for (i = 0; i < rename_dst_nr; i++)
                insert_file_table(&file_table, 1, i, rename_dst[i].two);
@@ -472,7 +473,7 @@ void diffcore_rename(struct diff_options *options)
                         */
                        if (p->broken_pair && !p->score)
                                p->one->rename_used++;
-                       register_rename_src(p->one, p->score);
+                       register_rename_src(p);
                }
                else if (detect_rename == DIFF_DETECT_COPY) {
                        /*
@@ -480,7 +481,7 @@ void diffcore_rename(struct diff_options *options)
                         * one, to indicate ourselves as a user.
                         */
                        p->one->rename_used++;
-                       register_rename_src(p->one, p->score);
+                       register_rename_src(p);
                }
        }
        if (rename_dst_nr == 0 || rename_src_nr == 0)
@@ -526,7 +527,7 @@ void diffcore_rename(struct diff_options *options)
                        m[j].dst = -1;
 
                for (j = 0; j < rename_src_nr; j++) {
-                       struct diff_filespec *one = rename_src[j].one;
+                       struct diff_filespec *one = rename_src[j].p->one;
                        struct diff_score this_src;
                        this_src.score = estimate_similarity(one, two,
                                                             minimum_score);
@@ -556,7 +557,7 @@ void diffcore_rename(struct diff_options *options)
                dst = &rename_dst[mx[i].dst];
                if (dst->pair)
                        continue; /* already done, either exact or fuzzy. */
-               if (rename_src[mx[i].src].one->rename_used)
+               if (rename_src[mx[i].src].p->one->rename_used)
                        continue;
                record_rename_pair(mx[i].dst, mx[i].src, mx[i].score);
                rename_count++;