mergetool--lib: add support for araxis merge

[git.git] / combine-diff.c

diff --git a/combine-diff.c b/combine-diff.c
index 066ce841ed76e03dd87e789f6688cc3f5411ba64..60d03676bbd0dba7be79c7098d7cae553962ca98 100644 (file)
--- a/combine-diff.c
+++ b/combine-diff.c
@@ -6,6 +6,7 @@
 #include "quote.h"
 #include "xdiff-interface.h"
 #include "log-tree.h"
+#include "refs.h"
 
 static struct combine_diff_path *intersect_paths(struct combine_diff_path *curr, int n, int num_parent)
 {
@@ -23,7 +24,7 @@ static struct combine_diff_path *intersect_paths(struct combine_diff_path *curr,
                        path = q->queue[i]->two->path;
                        len = strlen(path);
                        p = xmalloc(combine_diff_path_size(num_parent, len));
-                       p->path = (char*) &(p->parent[num_parent]);
+                       p->path = (char *) &(p->parent[num_parent]);
                        memcpy(p->path, path, len);
                        p->path[len] = 0;
                        p->len = len;
@@ -90,18 +91,24 @@ struct sline {
        unsigned long *p_lno;
 };
 
-static char *grab_blob(const unsigned char *sha1, unsigned long *size)
+static char *grab_blob(const unsigned char *sha1, unsigned int mode, unsigned long *size)
 {
        char *blob;
        enum object_type type;
-       if (is_null_sha1(sha1)) {
+
+       if (S_ISGITLINK(mode)) {
+               blob = xmalloc(100);
+               *size = snprintf(blob, 100,
+                                "Subproject commit %s\n", sha1_to_hex(sha1));
+       } else if (is_null_sha1(sha1)) {
                /* deleted blob */
                *size = 0;
                return xcalloc(1, 1);
+       } else {
+               blob = read_sha1_file(sha1, &type, size);
+               if (type != OBJ_BLOB)
+                       die("object '%s' is not a blob!", sha1_to_hex(sha1));
        }
-       blob = read_sha1_file(sha1, &type, size);
-       if (type != OBJ_BLOB)
-               die("object '%s' is not a blob!", sha1_to_hex(sha1));
        return blob;
 }
 
@@ -195,7 +202,8 @@ static void consume_line(void *state_, char *line, unsigned long len)
        }
 }
 
-static void combine_diff(const unsigned char *parent, mmfile_t *result_file,
+static void combine_diff(const unsigned char *parent, unsigned int mode,
+                        mmfile_t *result_file,
                         struct sline *sline, unsigned int cnt, int n,
                         int num_parent)
 {
@@ -211,7 +219,7 @@ static void combine_diff(const unsigned char *parent, mmfile_t *result_file,
        if (!cnt)
                return; /* result deleted */
 
-       parent_file.ptr = grab_blob(parent, &sz);
+       parent_file.ptr = grab_blob(parent, mode, &sz);
        parent_file.size = sz;
        memset(&xpp, 0, sizeof(xpp));
        xpp.flags = XDF_NEED_MINIMAL;
@@ -692,7 +700,7 @@ static void show_patch_diff(struct combine_diff_path *elem, int num_parent,
 
        /* Read the result of merge first */
        if (!working_tree_file)
-               result = grab_blob(elem->sha1, &result_size);
+               result = grab_blob(elem->sha1, elem->mode, &result_size);
        else {
                /* Used by diff-tree to read from the working tree */
                struct stat st;
@@ -712,6 +720,12 @@ static void show_patch_diff(struct combine_diff_path *elem, int num_parent,
                        result_size = buf.len;
                        result = strbuf_detach(&buf, NULL);
                        elem->mode = canon_mode(st.st_mode);
+               } else if (S_ISDIR(st.st_mode)) {
+                       unsigned char sha1[20];
+                       if (resolve_gitlink_ref(elem->path, "HEAD", sha1) < 0)
+                               result = grab_blob(elem->sha1, elem->mode, &result_size);
+                       else
+                               result = grab_blob(sha1, elem->mode, &result_size);
                } else if (0 <= (fd = open(elem->path, O_RDONLY))) {
                        size_t len = xsize_t(st.st_size);
                        ssize_t done;
@@ -804,7 +818,9 @@ static void show_patch_diff(struct combine_diff_path *elem, int num_parent,
                        }
                }
                if (i <= j)
-                       combine_diff(elem->parent[i].sha1, &result_file, sline,
+                       combine_diff(elem->parent[i].sha1,
+                                    elem->parent[i].mode,
+                                    &result_file, sline,
                                     cnt, i, num_parent);
                if (elem->parent[i].mode != elem->mode)
                        mode_differs = 1;
@@ -1047,7 +1063,7 @@ void diff_tree_combined_merge(const unsigned char *sha1,
        for (parents = commit->parents, num_parent = 0;
             parents;
             parents = parents->next, num_parent++)
-               hashcpy((unsigned char*)(parent + num_parent),
+               hashcpy((unsigned char *)(parent + num_parent),
                        parents->item->object.sha1);
        diff_tree_combined(sha1, parent, num_parent, dense, rev);
 }