[v10,6/9] ls-tree.c: support --object-only option for "git-ls-tree"

Message ID	bcfbc935b80b889273e3e54fec2a896e44acd2b5.1641978175.git.dyroneteng@gmail.com (mailing list archive)
State	Superseded
Headers	show Return-Path: <git-owner@kernel.org> From: Teng Long <dyroneteng@gmail.com> To: dyroneteng@gmail.com Cc: Johannes.Schindelin@gmx.de, avarab@gmail.com, congdanhqx@gmail.com, git@vger.kernel.org, gitster@pobox.com, peff@peff.net, tenglong.tl@alibaba-inc.com, martin.agren@gmail.com Subject: [PATCH v10 6/9] ls-tree.c: support --object-only option for "git-ls-tree" Date: Thu, 13 Jan 2022 11:42:09 +0800 Message-Id: <bcfbc935b80b889273e3e54fec2a896e44acd2b5.1641978175.git.dyroneteng@gmail.com> In-Reply-To: <cover.1641978175.git.dyroneteng@gmail.com> References: <cover.1641978175.git.dyroneteng@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk
Series	ls-tree: "--object-only" and "--format" opts \| expand [v10,0/9] ls-tree: "--object-only" and "--format" opts [v10,1/9] ls-tree: remove commented-out code [v10,2/9] ls-tree: add missing braces to "else" arms [v10,3/9] ls-tree: use "enum object_type", not {blob,tree,commit}_type [v10,4/9] ls-tree: use "size_t", not "int" for "struct strbuf"'s "len" [v10,5/9] ls-tree: optimize naming and handling of "return" in show_tree() [v10,6/9] ls-tree.c: support --object-only option for "git-ls-tree" [v10,7/9] ls-tree.c: introduce struct "show_tree_data" [v10,8/9] cocci: allow padding with `strbuf_addf()` [v10,9/9] ls-tree.c: introduce "--format" option

diff --git a/Documentation/git-ls-tree.txt b/Documentation/git-ls-tree.txt index db02d6d79a..729370f235 100644 --- a/Documentation/git-ls-tree.txt +++ b/Documentation/git-ls-tree.txt @@ -10,7 +10,7 @@ SYNOPSIS -------- [verse] 'git ls-tree' [-d] [-r] [-t] [-l] [-z] - [--name-only] [--name-status] [--full-name] [--full-tree] [--abbrev[=<n>]] + [--name-only] [--name-status] [--object-only] [--full-name] [--full-tree] [--abbrev[=<n>]] <tree-ish> [<path>...] DESCRIPTION @@ -59,6 +59,11 @@ OPTIONS --name-only:: --name-status:: List only filenames (instead of the "long" output), one per line. + Cannot be combined with `--object-only`. + +--object-only:: + List only names of the objects, one per line. Cannot be combined + with `--name-only` or `--name-status`. --abbrev[=<n>]:: Instead of showing the full 40-byte hexadecimal object diff --git a/builtin/ls-tree.c b/builtin/ls-tree.c index 9729854a3d..e1a2f8225b 100644 --- a/builtin/ls-tree.c +++ b/builtin/ls-tree.c @@ -16,22 +16,60 @@ static int line_termination = '\n'; #define LS_RECURSIVE 1 -#define LS_TREE_ONLY 2 -#define LS_SHOW_TREES 4 -#define LS_NAME_ONLY 8 -#define LS_SHOW_SIZE 16 +#define LS_TREE_ONLY (1 << 1) +#define LS_SHOW_TREES (1 << 2) +#define LS_NAME_ONLY (1 << 3) +#define LS_SHOW_SIZE (1 << 4) +#define LS_OBJECT_ONLY (1 << 5) static int abbrev; static int ls_options; static struct pathspec pathspec; static int chomp_prefix; static const char *ls_tree_prefix; +static unsigned int shown_fields; +#define FIELD_FILE_NAME 1 +#define FIELD_SIZE (1 << 1) +#define FIELD_OBJECT_NAME (1 << 2) +#define FIELD_TYPE (1 << 3) +#define FIELD_MODE (1 << 4) +#define FIELD_DEFAULT 29 /* 11101 size is not shown to output by default */ +#define FIELD_LONG_DEFAULT (FIELD_DEFAULT | FIELD_SIZE) static const char * const ls_tree_usage[] = { N_("git ls-tree [<options>] <tree-ish> [<path>...]"), NULL }; -static int show_recursive(const char *base, size_t baselen, const char *pathname) +enum { + MODE_UNSPECIFIED = 0, + MODE_NAME_ONLY, + MODE_OBJECT_ONLY, + MODE_LONG, +}; + +static int cmdmode = MODE_UNSPECIFIED; + +static int parse_shown_fields(void) +{ + if (cmdmode == MODE_NAME_ONLY) { + shown_fields = FIELD_FILE_NAME; + return 0; + } + if (cmdmode == MODE_OBJECT_ONLY) { + shown_fields = FIELD_OBJECT_NAME; + return 0; + } + if (!ls_options || (ls_options & LS_RECURSIVE) + || (ls_options & LS_SHOW_TREES) + || (ls_options & LS_TREE_ONLY)) + shown_fields = FIELD_DEFAULT; + if (cmdmode == MODE_LONG) + shown_fields = FIELD_LONG_DEFAULT; + return 1; +} + +static int show_recursive(const char *base, size_t baselen, + const char *pathname) { int i; @@ -70,6 +108,39 @@ static enum object_type get_type(unsigned int mode) : OBJ_BLOB); } +static int show_default(const struct object_id *oid, enum object_type type, + const char *pathname, unsigned mode, + struct strbuf *base) +{ + size_t baselen = base->len; + + if (shown_fields & FIELD_SIZE) { + char size_text[24]; + if (type == OBJ_BLOB) { + unsigned long size; + if (oid_object_info(the_repository, oid, &size) == OBJ_BAD) + xsnprintf(size_text, sizeof(size_text), "BAD"); + else + xsnprintf(size_text, sizeof(size_text), + "%" PRIuMAX, (uintmax_t)size); + } else { + xsnprintf(size_text, sizeof(size_text), "-"); + } + printf("%06o %s %s %7s\t", mode, type_name(type), + find_unique_abbrev(oid, abbrev), size_text); + } else { + printf("%06o %s %s\t", mode, type_name(type), + find_unique_abbrev(oid, abbrev)); + } + baselen = base->len; + strbuf_addstr(base, pathname); + write_name_quoted_relative(base->buf, + chomp_prefix ? ls_tree_prefix : NULL, stdout, + line_termination); + strbuf_setlen(base, baselen); + return 1; +} + static int show_tree(const struct object_id *oid, struct strbuf *base, const char *pathname, unsigned mode, void *context) { @@ -84,34 +155,24 @@ static int show_tree(const struct object_id *oid, struct strbuf *base, if (type == OBJ_BLOB && (ls_options & LS_TREE_ONLY)) return 0; - if (!(ls_options & LS_NAME_ONLY)) { - if (ls_options & LS_SHOW_SIZE) { - char size_text[24]; - if (type == OBJ_BLOB) { - unsigned long size; - if (oid_object_info(the_repository, oid, &size) == OBJ_BAD) - xsnprintf(size_text, sizeof(size_text), - "BAD"); - else - xsnprintf(size_text, sizeof(size_text), - "%"PRIuMAX, (uintmax_t)size); - } else { - xsnprintf(size_text, sizeof(size_text), "-"); - } - printf("%06o %s %s %7s\t", mode, type_name(type), - find_unique_abbrev(oid, abbrev), - size_text); - } else { - printf("%06o %s %s\t", mode, type_name(type), - find_unique_abbrev(oid, abbrev)); - } + if (shown_fields == FIELD_OBJECT_NAME) { + printf("%s%c", find_unique_abbrev(oid, abbrev), line_termination); + return recurse; } - baselen = base->len; - strbuf_addstr(base, pathname); - write_name_quoted_relative(base->buf, - chomp_prefix ? ls_tree_prefix : NULL, - stdout, line_termination); - strbuf_setlen(base, baselen); + + if (shown_fields == FIELD_FILE_NAME) { + baselen = base->len; + strbuf_addstr(base, pathname); + write_name_quoted_relative(base->buf, + chomp_prefix ? ls_tree_prefix : NULL, + stdout, line_termination); + strbuf_setlen(base, baselen); + return recurse; + } + + if (shown_fields >= FIELD_DEFAULT) + show_default(oid, type, pathname, mode, base); + return recurse; } @@ -129,12 +190,14 @@ int cmd_ls_tree(int argc, const char **argv, const char *prefix) LS_SHOW_TREES), OPT_SET_INT('z', NULL, &line_termination, N_("terminate entries with NUL byte"), 0), - OPT_BIT('l', "long", &ls_options, N_("include object size"), - LS_SHOW_SIZE), - OPT_BIT(0, "name-only", &ls_options, N_("list only filenames"), - LS_NAME_ONLY), - OPT_BIT(0, "name-status", &ls_options, N_("list only filenames"), - LS_NAME_ONLY), + OPT_CMDMODE('l', "long", &cmdmode, N_("include object size"), + MODE_LONG), + OPT_CMDMODE(0, "name-only", &cmdmode, N_("list only filenames"), + MODE_NAME_ONLY), + OPT_CMDMODE(0, "name-status", &cmdmode, N_("list only filenames"), + MODE_NAME_ONLY), + OPT_CMDMODE(0, "object-only", &cmdmode, N_("list only objects"), + MODE_OBJECT_ONLY), OPT_SET_INT(0, "full-name", &chomp_prefix, N_("use full path names"), 0), OPT_BOOL(0, "full-tree", &full_tree, @@ -165,6 +228,8 @@ int cmd_ls_tree(int argc, const char **argv, const char *prefix) if (get_oid(argv[0], &oid)) die("Not a valid object name %s", argv[0]); + parse_shown_fields(); + /* * show_recursive() rolls its own matching code and is * generally ignorant of 'struct pathspec'. The magic mask diff --git a/t/t3104-ls-tree-oid.sh b/t/t3104-ls-tree-oid.sh new file mode 100755 index 0000000000..6ce62bd769 --- /dev/null +++ b/t/t3104-ls-tree-oid.sh @@ -0,0 +1,51 @@ +#!/bin/sh + +test_description='git ls-tree objects handling.' + +. ./test-lib.sh + +test_expect_success 'setup' ' + test_commit A && + test_commit B && + mkdir -p C && + test_commit C/D.txt && + find *.txt path* $ -type f -o -type l $ -print | + xargs git update-index --add && + tree=$(git write-tree) && + echo $tree +' + +test_expect_success 'usage: --object-only' ' + git ls-tree --object-only $tree >current && + git ls-tree $tree >result && + cut -f1 result | cut -d " " -f3 >expected && + test_cmp current expected +' + +test_expect_success 'usage: --object-only with -r' ' + git ls-tree --object-only -r $tree >current && + git ls-tree -r $tree >result && + cut -f1 result | cut -d " " -f3 >expected && + test_cmp current expected +' + +test_expect_success 'usage: --object-only with --abbrev' ' + git ls-tree --object-only --abbrev=6 $tree >current && + git ls-tree --abbrev=6 $tree >result && + cut -f1 result | cut -d " " -f3 >expected && + test_cmp current expected +' + +test_expect_success 'usage: incompatible options: --name-only with --object-only' ' + test_expect_code 129 git ls-tree --object-only --name-only $tree +' + +test_expect_success 'usage: incompatible options: --name-status with --object-only' ' + test_expect_code 129 git ls-tree --object-only --name-status $tree +' + +test_expect_success 'usage: incompatible options: --long with --object-only' ' + test_expect_code 129 git ls-tree --object-only --long $tree +' + +test_done

[v10,6/9] ls-tree.c: support --object-only option for "git-ls-tree"

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