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ls-files: pass prefix length explicitly to prune_cache()

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The function prune_cache() relies on the fact that it is only called on
max_prefix and sneakily uses the matching global variable max_prefix_len
directly.  Tighten its interface by passing both the string and its
length as parameters.  While at it move the NULL check into the function
to collect all cache-pruning related logic in one place.

Signed-off-by: Rene Scharfe <l.s.r@web.de>
Reviewed-by: Brandon Williams <bmwill@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
René Scharfe 2017-02-10 20:42:28 +01:00 committed by Junio C Hamano
parent 3b9e3c2ced
commit 7b4158a8d8
1 changed files with 7 additions and 5 deletions
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12
builtin/ls-files.c
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@ -369,11 +369,14 @@ static void show_files(struct dir_struct *dir)
/*
* Prune the index to only contain stuff starting with "prefix"
*/
static void prune_cache(const char *prefix)
static void prune_cache(const char *prefix, size_t prefixlen)
{
int pos = cache_name_pos(prefix, max_prefix_len);
int pos;
unsigned int first, last;
if (!prefix)
return;
pos = cache_name_pos(prefix, prefixlen);
if (pos < 0)
pos = -pos-1;
memmove(active_cache, active_cache + pos,
@ -384,7 +387,7 @@ static void prune_cache(const char *prefix)
while (last > first) {
int next = (last + first) >> 1;
const struct cache_entry *ce = active_cache[next];
if (!strncmp(ce->name, prefix, max_prefix_len)) {
if (!strncmp(ce->name, prefix, prefixlen)) {
first = next+1;
continue;
}
@ -641,8 +644,7 @@ int cmd_ls_files(int argc, const char **argv, const char *cmd_prefix)
show_killed || show_modified || show_resolve_undo))
show_cached = 1;
if (max_prefix)
prune_cache(max_prefix);
prune_cache(max_prefix, max_prefix_len);
if (with_tree) {
/*
* Basic sanity check; show-stages and show-unmerged