Merge branch 'bg/apply-fix-blank-at-eof'

[git.git] / xdiff / xmerge.c

diff --git a/xdiff/xmerge.c b/xdiff/xmerge.c
index 68c815f9d3f81746a3545ef715291141a1c648ad..87cafa7021468d00a11c72dfdc1df05f1ede0fea 100644 (file)
--- a/xdiff/xmerge.c
+++ b/xdiff/xmerge.c
@@ -28,6 +28,7 @@ typedef struct s_xdmerge {
         * 0 = conflict,
         * 1 = no conflict, take first,
         * 2 = no conflict, take second.
+        * 3 = no conflict, take both.
         */
        int mode;
        /*
@@ -216,24 +217,33 @@ static int fill_conflict_hunk(xdfenv_t *xe1, const char *name1,
 
 static int xdl_fill_merge_buffer(xdfenv_t *xe1, const char *name1,
                                 xdfenv_t *xe2, const char *name2,
+                                int favor,
                                 xdmerge_t *m, char *dest, int style,
                                 int marker_size)
 {
        int size, i;
 
        for (size = i = 0; m; m = m->next) {
+               if (favor && !m->mode)
+                       m->mode = favor;
+
                if (m->mode == 0)
                        size = fill_conflict_hunk(xe1, name1, xe2, name2,
                                                  size, i, style, m, dest,
                                                  marker_size);
-               else if (m->mode == 1)
-                       size += xdl_recs_copy(xe1, i, m->i1 + m->chg1 - i, 0,
-                                             dest ? dest + size : NULL);
-               else if (m->mode == 2)
-                       size += xdl_recs_copy(xe2, m->i2 - m->i1 + i,
-                                             m->i1 + m->chg2 - i, 0,
+               else if (m->mode & 3) {
+                       /* Before conflicting part */
+                       size += xdl_recs_copy(xe1, i, m->i1 - i, 0,
                                              dest ? dest + size : NULL);
-               else
+                       /* Postimage from side #1 */
+                       if (m->mode & 1)
+                               size += xdl_recs_copy(xe1, m->i1, m->chg1, 1,
+                                                     dest ? dest + size : NULL);
+                       /* Postimage from side #2 */
+                       if (m->mode & 2)
+                               size += xdl_recs_copy(xe2, m->i2, m->chg2, 1,
+                                                     dest ? dest + size : NULL);
+               } else
                        continue;
                i = m->i1 + m->chg1;
        }
@@ -390,12 +400,13 @@ static int xdl_simplify_non_conflicts(xdfenv_t *xe1, xdmerge_t *m,
  */
 static int xdl_do_merge(xdfenv_t *xe1, xdchange_t *xscr1, const char *name1,
                xdfenv_t *xe2, xdchange_t *xscr2, const char *name2,
-               int flags, xmparam_t const *xmp, mmbuffer_t *result) {
+               xmparam_t const *xmp, mmbuffer_t *result) {
        xdmerge_t *changes, *c;
        xpparam_t const *xpp = &xmp->xpp;
        int i0, i1, i2, chg0, chg1, chg2;
-       int level = flags & XDL_MERGE_LEVEL_MASK;
-       int style = flags & XDL_MERGE_STYLE_MASK;
+       int level = xmp->level;
+       int style = xmp->style;
+       int favor = xmp->favor;
 
        if (style == XDL_MERGE_DIFF3) {
                /*
@@ -529,7 +540,7 @@ static int xdl_do_merge(xdfenv_t *xe1, xdchange_t *xscr1, const char *name1,
        if (result) {
                int marker_size = xmp->marker_size;
                int size = xdl_fill_merge_buffer(xe1, name1, xe2, name2,
-                                                changes, NULL, style,
+                                                favor, changes, NULL, style,
                                                 marker_size);
                result->ptr = xdl_malloc(size);
                if (!result->ptr) {
@@ -537,7 +548,7 @@ static int xdl_do_merge(xdfenv_t *xe1, xdchange_t *xscr1, const char *name1,
                        return -1;
                }
                result->size = size;
-               xdl_fill_merge_buffer(xe1, name1, xe2, name2, changes,
+               xdl_fill_merge_buffer(xe1, name1, xe2, name2, favor, changes,
                                      result->ptr, style, marker_size);
        }
        return xdl_cleanup_merge(changes);
@@ -545,7 +556,7 @@ static int xdl_do_merge(xdfenv_t *xe1, xdchange_t *xscr1, const char *name1,
 
 int xdl_merge(mmfile_t *orig, mmfile_t *mf1, const char *name1,
                mmfile_t *mf2, const char *name2,
-               xmparam_t const *xmp, int flags, mmbuffer_t *result) {
+               xmparam_t const *xmp, mmbuffer_t *result) {
        xdchange_t *xscr1, *xscr2;
        xdfenv_t xe1, xe2;
        int status;
@@ -582,7 +593,7 @@ int xdl_merge(mmfile_t *orig, mmfile_t *mf1, const char *name1,
        } else {
                status = xdl_do_merge(&xe1, xscr1, name1,
                                      &xe2, xscr2, name2,
-                                     flags, xmp, result);
+                                     xmp, result);
        }
        xdl_free_script(xscr1);
        xdl_free_script(xscr2);