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ls-tree: simplify prefix handling

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git ls-tree has two prefixes: The one handed to cmd_ls_tree(), i.e. the
current subdirectory in the repository (if any) and the "display" prefix
used by the show_tree_*() functions.  The option --full-name clears the
last one, i.e. it shows full paths, and --full-tree clears both, i.e. it
acts as if the command was started in the root of the repository.

The show_tree_*() functions use the ls_tree_options members chomp_prefix
and ls_tree_prefix to determine their prefix values.  Calculate it once
in cmd_ls_tree() instead, once the main prefix value is finalized.

This allows chomp_prefix to become a local variable.  Stop using
strlen(3) to determine its initial value -- we only care whether we got
a non-empty string, not precisely how long it is.

Rename ls_tree_prefix to prefix to demonstrate that we converted all
users and because the ls_tree_ part is no longer necessary since
030a3d5d9e (ls-tree: use a "struct options", 2023-01-12) turned it from
a global variable to a struct member.

Signed-off-by: René Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
René Scharfe 2023-07-07 20:34:31 +02:00 committed by Junio C Hamano
parent 061c58647e
commit 7b7203e78a
1 changed files with 10 additions and 14 deletions
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24
builtin/ls-tree.c
View file

@ -50,8 +50,7 @@ struct ls_tree_options {
LS_SHOW_TREES = 1 << 2,
} ls_options;
struct pathspec pathspec;
int chomp_prefix;
const char *ls_tree_prefix;
const char *prefix;
const char *format;
};
@ -128,8 +127,7 @@ static int show_tree_fmt(const struct object_id *oid, struct strbuf *base,
strbuf_add_unique_abbrev(&sb, oid, options->abbrev);
else if (skip_prefix(format, "(path)", &format)) {
const char *name;
const char *prefix = options->chomp_prefix ?
options->ls_tree_prefix : NULL;
const char *prefix = options->prefix;
struct strbuf sbuf = STRBUF_INIT;
size_t baselen = base->len;
@ -173,7 +171,7 @@ static void show_tree_common_default_long(struct ls_tree_options *options,
const char *pathname,
const size_t baselen)
{
const char *prefix = options->chomp_prefix ? options->ls_tree_prefix : NULL;
const char *prefix = options->prefix;
strbuf_addstr(base, pathname);
@ -258,7 +256,7 @@ static int show_tree_name_only(const struct object_id *oid, struct strbuf *base,
if (early >= 0)
return early;
prefix = options->chomp_prefix ? options->ls_tree_prefix : NULL;
prefix = options->prefix;
strbuf_addstr(base, pathname);
if (options->null_termination) {
struct strbuf sb = STRBUF_INIT;
@ -345,6 +343,7 @@ int cmd_ls_tree(int argc, const char **argv, const char *prefix)
struct object_id oid;
struct tree *tree;
int i, full_tree = 0;
int chomp_prefix = prefix && *prefix;
read_tree_fn_t fn = NULL;
enum ls_tree_cmdmode cmdmode = MODE_DEFAULT;
int null_termination = 0;
@ -366,7 +365,7 @@ int cmd_ls_tree(int argc, const char **argv, const char *prefix)
MODE_NAME_STATUS),
OPT_CMDMODE(0, "object-only", &cmdmode, N_("list only objects"),
MODE_OBJECT_ONLY),
OPT_SET_INT(0, "full-name", &options.chomp_prefix,
OPT_SET_INT(0, "full-name", &chomp_prefix,
N_("use full path names"), 0),
OPT_BOOL(0, "full-tree", &full_tree,
N_("list entire tree; not just current directory "
@ -381,18 +380,15 @@ int cmd_ls_tree(int argc, const char **argv, const char *prefix)
int ret;
git_config(git_default_config, NULL);
options.ls_tree_prefix = prefix;
if (prefix)
options.chomp_prefix = strlen(prefix);
argc = parse_options(argc, argv, prefix, ls_tree_options,
ls_tree_usage, 0);
options.null_termination = null_termination;
if (full_tree) {
options.ls_tree_prefix = prefix = NULL;
options.chomp_prefix = 0;
}
if (full_tree)
prefix = NULL;
options.prefix = chomp_prefix ? prefix : NULL;
/*
* We wanted to detect conflicts between --name-only and
* --name-status, but once we're done with that subsequent