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index-pack: add a helper function to derive .idx/.keep filename

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These are automatically named by replacing .pack suffix in the
name of the packfile.  Add a small helper to do so, as I'll be
adding another one soonish.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Junio C Hamano 2016-03-03 11:29:09 -08:00
parent 13f0a6ddb9
commit bfee614a2f
1 changed files with 17 additions and 18 deletions
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35
builtin/index-pack.c
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@ -1598,6 +1598,18 @@ static void show_pack_info(int stat_only)
}
}
static const char *derive_filename(const char *pack_name, const char *suffix,
struct strbuf *buf)
{
size_t len;
if (!strip_suffix(pack_name, ".pack", &len))
die(_("packfile name '%s' does not end with '.pack'"),
pack_name);
strbuf_add(buf, pack_name, len);
strbuf_addstr(buf, suffix);
return buf->buf;
}
int cmd_index_pack(int argc, const char **argv, const char *prefix)
{
int i, fix_thin_pack = 0, verify = 0, stat_only = 0;
@ -1706,24 +1718,11 @@ int cmd_index_pack(int argc, const char **argv, const char *prefix)
usage(index_pack_usage);
if (fix_thin_pack && !from_stdin)
die(_("--fix-thin cannot be used without --stdin"));
if (!index_name && pack_name) {
size_t len;
if (!strip_suffix(pack_name, ".pack", &len))
die(_("packfile name '%s' does not end with '.pack'"),
pack_name);
strbuf_add(&index_name_buf, pack_name, len);
strbuf_addstr(&index_name_buf, ".idx");
index_name = index_name_buf.buf;
}
if (keep_msg && !keep_name && pack_name) {
size_t len;
if (!strip_suffix(pack_name, ".pack", &len))
die(_("packfile name '%s' does not end with '.pack'"),
pack_name);
strbuf_add(&keep_name_buf, pack_name, len);
strbuf_addstr(&keep_name_buf, ".keep");
keep_name = keep_name_buf.buf;
}
if (!index_name && pack_name)
index_name = derive_filename(pack_name, ".idx", &index_name_buf);
if (keep_msg && !keep_name && pack_name)
keep_name = derive_filename(pack_name, ".keep", &keep_name_buf);
if (verify) {
if (!index_name)
die(_("--verify with no packfile name given"));