diff: factor out match_filter()
[gitweb.git] / ll-merge.c
index 6bb3095c3a85d771bb60e8f2f025287d16e792df..fb61ea66a13eba3a8e91a05dbe1c37de98cec853 100644 (file)
@@ -18,7 +18,7 @@ typedef int (*ll_merge_fn)(const struct ll_merge_driver *,
                           mmfile_t *orig, const char *orig_name,
                           mmfile_t *src1, const char *name1,
                           mmfile_t *src2, const char *name2,
-                          int flag,
+                          const struct ll_merge_options *opts,
                           int marker_size);
 
 struct ll_merge_driver {
@@ -35,23 +35,45 @@ struct ll_merge_driver {
  */
 static int ll_binary_merge(const struct ll_merge_driver *drv_unused,
                           mmbuffer_t *result,
-                          const char *path_unused,
+                          const char *path,
                           mmfile_t *orig, const char *orig_name,
                           mmfile_t *src1, const char *name1,
                           mmfile_t *src2, const char *name2,
-                          int flag, int marker_size)
+                          const struct ll_merge_options *opts,
+                          int marker_size)
 {
+       mmfile_t *stolen;
+       assert(opts);
+
        /*
-        * The tentative merge result is "ours" for the final round,
-        * or common ancestor for an internal merge.  Still return
-        * "conflicted merge" status.
+        * The tentative merge result is the or common ancestor for an internal merge.
         */
-       mmfile_t *stolen = (flag & LL_OPT_VIRTUAL_ANCESTOR) ? orig : src1;
+       if (opts->virtual_ancestor) {
+               stolen = orig;
+       } else {
+               switch (opts->variant) {
+               default:
+                       warning("Cannot merge binary files: %s (%s vs. %s)",
+                               path, name1, name2);
+                       /* fallthru */
+               case XDL_MERGE_FAVOR_OURS:
+                       stolen = src1;
+                       break;
+               case XDL_MERGE_FAVOR_THEIRS:
+                       stolen = src2;
+                       break;
+               }
+       }
 
        result->ptr = stolen->ptr;
        result->size = stolen->size;
        stolen->ptr = NULL;
-       return 1;
+
+       /*
+        * With -Xtheirs or -Xours, we have cleanly merged;
+        * otherwise we got a conflict.
+        */
+       return (opts->variant ? 0 : 1);
 }
 
 static int ll_xdl_merge(const struct ll_merge_driver *drv_unused,
@@ -60,26 +82,27 @@ static int ll_xdl_merge(const struct ll_merge_driver *drv_unused,
                        mmfile_t *orig, const char *orig_name,
                        mmfile_t *src1, const char *name1,
                        mmfile_t *src2, const char *name2,
-                       int flag, int marker_size)
+                       const struct ll_merge_options *opts,
+                       int marker_size)
 {
        xmparam_t xmp;
+       assert(opts);
 
        if (buffer_is_binary(orig->ptr, orig->size) ||
            buffer_is_binary(src1->ptr, src1->size) ||
            buffer_is_binary(src2->ptr, src2->size)) {
-               warning("Cannot merge binary files: %s (%s vs. %s)\n",
-                       path, name1, name2);
                return ll_binary_merge(drv_unused, result,
                                       path,
                                       orig, orig_name,
                                       src1, name1,
                                       src2, name2,
-                                      flag, marker_size);
+                                      opts, marker_size);
        }
 
        memset(&xmp, 0, sizeof(xmp));
        xmp.level = XDL_MERGE_ZEALOUS;
-       xmp.favor = ll_opt_favor(flag);
+       xmp.favor = opts->variant;
+       xmp.xpp.flags = opts->xdl_opts;
        if (git_xmerge_style >= 0)
                xmp.style = git_xmerge_style;
        if (marker_size > 0)
@@ -96,15 +119,17 @@ static int ll_union_merge(const struct ll_merge_driver *drv_unused,
                          mmfile_t *orig, const char *orig_name,
                          mmfile_t *src1, const char *name1,
                          mmfile_t *src2, const char *name2,
-                         int flag, int marker_size)
+                         const struct ll_merge_options *opts,
+                         int marker_size)
 {
        /* Use union favor */
-       flag &= ~LL_OPT_FAVOR_MASK;
-       flag |= create_ll_flag(XDL_MERGE_FAVOR_UNION);
+       struct ll_merge_options o;
+       assert(opts);
+       o = *opts;
+       o.variant = XDL_MERGE_FAVOR_UNION;
        return ll_xdl_merge(drv_unused, result, path_unused,
                            orig, NULL, src1, NULL, src2, NULL,
-                           flag, marker_size);
-       return 0;
+                           &o, marker_size);
 }
 
 #define LL_BINARY_MERGE 0
@@ -136,7 +161,8 @@ static int ll_ext_merge(const struct ll_merge_driver *fn,
                        mmfile_t *orig, const char *orig_name,
                        mmfile_t *src1, const char *name1,
                        mmfile_t *src2, const char *name2,
-                       int flag, int marker_size)
+                       const struct ll_merge_options *opts,
+                       int marker_size)
 {
        char temp[4][50];
        struct strbuf cmd = STRBUF_INIT;
@@ -144,6 +170,7 @@ static int ll_ext_merge(const struct ll_merge_driver *fn,
        const char *args[] = { NULL, NULL };
        int status, fd, i;
        struct stat st;
+       assert(opts);
 
        dict[0].placeholder = "O"; dict[0].value = temp[0];
        dict[1].placeholder = "A"; dict[1].value = temp[1];
@@ -195,7 +222,7 @@ static const char *default_ll_merge;
 static int read_merge_config(const char *var, const char *value, void *cb)
 {
        struct ll_merge_driver *fn;
-       const char *ep, *name;
+       const char *key, *name;
        int namelen;
 
        if (!strcmp(var, "merge.default")) {
@@ -209,15 +236,13 @@ static int read_merge_config(const char *var, const char *value, void *cb)
         * especially, we do not want to look at variables such as
         * "merge.summary", "merge.tool", and "merge.verbosity".
         */
-       if (prefixcmp(var, "merge.") || (ep = strrchr(var, '.')) == var + 5)
+       if (parse_config_key(var, "merge", &name, &namelen, &key) < 0 || !name)
                return 0;
 
        /*
         * Find existing one as we might be processing merge.<name>.var2
         * after seeing merge.<name>.var1.
         */
-       name = var + 6;
-       namelen = ep - name;
        for (fn = ll_user_merge; fn; fn = fn->next)
                if (!strncmp(fn->name, name, namelen) && !fn->name[namelen])
                        break;
@@ -229,16 +254,14 @@ static int read_merge_config(const char *var, const char *value, void *cb)
                ll_user_merge_tail = &(fn->next);
        }
 
-       ep++;
-
-       if (!strcmp("name", ep)) {
+       if (!strcmp("name", key)) {
                if (!value)
                        return error("%s: lacks value", var);
                fn->description = xstrdup(value);
                return 0;
        }
 
-       if (!strcmp("driver", ep)) {
+       if (!strcmp("driver", key)) {
                if (!value)
                        return error("%s: lacks value", var);
                /*
@@ -262,7 +285,7 @@ static int read_merge_config(const char *var, const char *value, void *cb)
                return 0;
        }
 
-       if (!strcmp("recursive", ep)) {
+       if (!strcmp("recursive", key)) {
                if (!value)
                        return error("%s: lacks value", var);
                fn->recursive = xstrdup(value);
@@ -319,7 +342,7 @@ static int git_path_check_merge(const char *path, struct git_attr_check check[2]
                check[0].attr = git_attr("merge");
                check[1].attr = git_attr("conflict-marker-size");
        }
-       return git_checkattr(path, 2, check);
+       return git_check_attr(path, 2, check);
 }
 
 static void normalize_file(mmfile_t *mm, const char *path)
@@ -337,15 +360,18 @@ int ll_merge(mmbuffer_t *result_buf,
             mmfile_t *ancestor, const char *ancestor_label,
             mmfile_t *ours, const char *our_label,
             mmfile_t *theirs, const char *their_label,
-            int flag)
+            const struct ll_merge_options *opts)
 {
        static struct git_attr_check check[2];
+       static const struct ll_merge_options default_opts;
        const char *ll_driver_name = NULL;
        int marker_size = DEFAULT_CONFLICT_MARKER_SIZE;
        const struct ll_merge_driver *driver;
-       int virtual_ancestor = flag & LL_OPT_VIRTUAL_ANCESTOR;
 
-       if (flag & LL_OPT_RENORMALIZE) {
+       if (!opts)
+               opts = &default_opts;
+
+       if (opts->renormalize) {
                normalize_file(ancestor, path);
                normalize_file(ours, path);
                normalize_file(theirs, path);
@@ -359,11 +385,11 @@ int ll_merge(mmbuffer_t *result_buf,
                }
        }
        driver = find_ll_merge_driver(ll_driver_name);
-       if (virtual_ancestor && driver->recursive)
+       if (opts->virtual_ancestor && driver->recursive)
                driver = find_ll_merge_driver(driver->recursive);
        return driver->fn(driver, result_buf, path, ancestor, ancestor_label,
                          ours, our_label, theirs, their_label,
-                         flag, marker_size);
+                         opts, marker_size);
 }
 
 int ll_merge_marker_size(const char *path)
@@ -373,7 +399,7 @@ int ll_merge_marker_size(const char *path)
 
        if (!check.attr)
                check.attr = git_attr("conflict-marker-size");
-       if (!git_checkattr(path, 1, &check) && check.value) {
+       if (!git_check_attr(path, 1, &check) && check.value) {
                marker_size = atoi(check.value);
                if (marker_size <= 0)
                        marker_size = DEFAULT_CONFLICT_MARKER_SIZE;