From: Karthik Nayak <karthik....@gmail.com>

Remove unnecessary variables from ref_list and ref_item
which were used for width computation. Make other changes
accordingly. This patch is a precursor for porting branch.c
to use ref-filter APIs.

Based-on-patch-by: Jeff King <p...@peff.net>
Mentored-by: Christian Couder <christian.cou...@gmail.com>
Mentored-by: Matthieu Moy <matthieu....@grenoble-inp.fr>
Signed-off-by: Karthik Nayak <karthik....@gmail.com>
---
 builtin/branch.c | 61 +++++++++++++++++++++++++++++---------------------------
 1 file changed, 32 insertions(+), 29 deletions(-)

diff --git a/builtin/branch.c b/builtin/branch.c
index 4fc8beb..b058b74 100644
--- a/builtin/branch.c
+++ b/builtin/branch.c
@@ -282,14 +282,14 @@ static int delete_branches(int argc, const char **argv, 
int force, int kinds,
 struct ref_item {
        char *name;
        char *dest;
-       unsigned int kind, width;
+       unsigned int kind;
        struct commit *commit;
        int ignore;
 };
 
 struct ref_list {
        struct rev_info revs;
-       int index, alloc, maxwidth, verbose, abbrev;
+       int index, alloc, verbose, abbrev;
        struct ref_item *list;
        struct commit_list *with_commit;
        int kinds;
@@ -386,15 +386,8 @@ static int append_ref(const char *refname, const struct 
object_id *oid, int flag
        newitem->name = xstrdup(refname);
        newitem->kind = kind;
        newitem->commit = commit;
-       newitem->width = utf8_strwidth(refname);
        newitem->dest = resolve_symref(orig_refname, prefix);
        newitem->ignore = 0;
-       /* adjust for "remotes/" */
-       if (newitem->kind == REF_REMOTE_BRANCH &&
-           ref_list->kinds != REF_REMOTE_BRANCH)
-               newitem->width += 8;
-       if (newitem->width > ref_list->maxwidth)
-               ref_list->maxwidth = newitem->width;
 
        return 0;
 }
@@ -505,11 +498,12 @@ static void add_verbose_info(struct strbuf *out, struct 
ref_item *item,
 }
 
 static void print_ref_item(struct ref_item *item, int maxwidth, int verbose,
-                          int abbrev, int current, char *prefix)
+                          int abbrev, int current, const char *remote_prefix)
 {
        char c;
        int color;
        struct strbuf out = STRBUF_INIT, name = STRBUF_INIT;
+       const char *prefix = "";
 
        if (item->ignore)
                return;
@@ -520,6 +514,7 @@ static void print_ref_item(struct ref_item *item, int 
maxwidth, int verbose,
                break;
        case REF_REMOTE_BRANCH:
                color = BRANCH_COLOR_REMOTE;
+               prefix = remote_prefix;
                break;
        default:
                color = BRANCH_COLOR_PLAIN;
@@ -557,16 +552,21 @@ static void print_ref_item(struct ref_item *item, int 
maxwidth, int verbose,
        strbuf_release(&out);
 }
 
-static int calc_maxwidth(struct ref_list *refs)
+static int calc_maxwidth(struct ref_list *refs, int remote_bonus)
 {
-       int i, w = 0;
+       int i, max = 0;
        for (i = 0; i < refs->index; i++) {
+               struct ref_item *it = &refs->list[i];
+               int w = utf8_strwidth(it->name);
+
                if (refs->list[i].ignore)
                        continue;
-               if (refs->list[i].width > w)
-                       w = refs->list[i].width;
+               if (it->kind == REF_REMOTE_BRANCH)
+                       w += remote_bonus;
+               if (w > max)
+                       max = w;
        }
-       return w;
+       return max;
 }
 
 static char *get_head_description(void)
@@ -600,21 +600,18 @@ static char *get_head_description(void)
        return strbuf_detach(&desc, NULL);
 }
 
-static void show_detached(struct ref_list *ref_list)
+static void show_detached(struct ref_list *ref_list, int maxwidth)
 {
        struct commit *head_commit = lookup_commit_reference_gently(head_sha1, 
1);
 
        if (head_commit && is_descendant_of(head_commit, 
ref_list->with_commit)) {
                struct ref_item item;
                item.name = get_head_description();
-               item.width = utf8_strwidth(item.name);
                item.kind = REF_LOCAL_BRANCH;
                item.dest = NULL;
                item.commit = head_commit;
                item.ignore = 0;
-               if (item.width > ref_list->maxwidth)
-                       ref_list->maxwidth = item.width;
-               print_ref_item(&item, ref_list->maxwidth, ref_list->verbose, 
ref_list->abbrev, 1, "");
+               print_ref_item(&item, maxwidth, ref_list->verbose, 
ref_list->abbrev, 1, "");
                free(item.name);
        }
 }
@@ -624,6 +621,16 @@ static int print_ref_list(int kinds, int detached, int 
verbose, int abbrev, stru
        int i;
        struct append_ref_cb cb;
        struct ref_list ref_list;
+       int maxwidth = 0;
+       const char *remote_prefix = "";
+
+       /*
+        * If we are listing more than just remote branches,
+        * then remote branches will have a "remotes/" prefix.
+        * We need to account for this in the width.
+        */
+       if (kinds != REF_REMOTE_BRANCH)
+               remote_prefix = "remotes/";
 
        memset(&ref_list, 0, sizeof(ref_list));
        ref_list.kinds = kinds;
@@ -667,26 +674,22 @@ static int print_ref_list(int kinds, int detached, int 
verbose, int abbrev, stru
                        clear_commit_marks(item->commit, ALL_REV_FLAGS);
                }
                clear_commit_marks(filter, ALL_REV_FLAGS);
-
-               if (verbose)
-                       ref_list.maxwidth = calc_maxwidth(&ref_list);
        }
+       if (verbose)
+               maxwidth = calc_maxwidth(&ref_list, strlen(remote_prefix));
 
        qsort(ref_list.list, ref_list.index, sizeof(struct ref_item), ref_cmp);
 
        detached = (detached && (kinds & REF_LOCAL_BRANCH));
        if (detached && match_patterns(pattern, "HEAD"))
-               show_detached(&ref_list);
+               show_detached(&ref_list, maxwidth);
 
        for (i = 0; i < ref_list.index; i++) {
                int current = !detached &&
                        (ref_list.list[i].kind == REF_LOCAL_BRANCH) &&
                        !strcmp(ref_list.list[i].name, head);
-               char *prefix = (kinds != REF_REMOTE_BRANCH &&
-                               ref_list.list[i].kind == REF_REMOTE_BRANCH)
-                               ? "remotes/" : "";
-               print_ref_item(&ref_list.list[i], ref_list.maxwidth, verbose,
-                              abbrev, current, prefix);
+               print_ref_item(&ref_list.list[i], maxwidth, verbose,
+                              abbrev, current, remote_prefix);
        }
 
        free_ref_list(&ref_list);
-- 
2.4.6

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