This works in a similar manner to git-check-attr. Some code was reused from add.c by refactoring out into pathspec.c.
Thanks to Jeff King and Junio C Hamano for the idea: http://thread.gmane.org/gmane.comp.version-control.git/108671/focus=108815 Signed-off-by: Adam Spiers <g...@adamspiers.org> --- .gitignore | 1 + Documentation/git-check-ignore.txt | 58 +++++++ Documentation/gitignore.txt | 6 +- Makefile | 1 + builtin.h | 1 + builtin/add.c | 2 +- builtin/check-ignore.c | 150 ++++++++++++++++ command-list.txt | 1 + contrib/completion/git-completion.bash | 1 + git.c | 1 + t/t0007-ignores.sh | 301 +++++++++++++++++++++++++++++++++ 11 files changed, 520 insertions(+), 3 deletions(-) create mode 100644 Documentation/git-check-ignore.txt create mode 100644 builtin/check-ignore.c create mode 100755 t/t0007-ignores.sh diff --git a/.gitignore b/.gitignore index bb5c91e..0cbe94c 100644 --- a/.gitignore +++ b/.gitignore @@ -22,6 +22,7 @@ /git-bundle /git-cat-file /git-check-attr +/git-check-ignore /git-check-ref-format /git-checkout /git-checkout-index diff --git a/Documentation/git-check-ignore.txt b/Documentation/git-check-ignore.txt new file mode 100644 index 0000000..3a85dbb --- /dev/null +++ b/Documentation/git-check-ignore.txt @@ -0,0 +1,58 @@ +git-check-ignore(1) +================= + +NAME +---- +git-check-ignore - Debug gitignore / exclude files + + +SYNOPSIS +-------- +[verse] +'git check-ignore' pathname... +'git check-ignore' --stdin [-z] < <list-of-paths> + +DESCRIPTION +----------- + +For each pathname given via the command-line or from a file via +`--stdin`, this command will list the first exclude pattern found (if +any) which explicitly excludes or includes that pathname. Note that +within any given exclude file, later patterns take precedence over +earlier ones, so any matching pattern which this command outputs may +not be the one you would immediately expect. + +OPTIONS +------- +--stdin:: + Read file names from stdin instead of from the command-line. + +-z:: + Only meaningful with `--stdin`; paths are separated with a + NUL character instead of a linefeed character. + +OUTPUT +------ + +The output is a series of lines of the form: + +<path> COLON SP <type> SP <pattern> SP <source> SP <position> LF + +<path> is the path of a file being queried, <type> is either +'excluded' or 'included' (for patterns prefixed with '!'), <pattern> +is the matching pattern, <source> is the pattern's source file (either +as an absolute path or relative to the repository root), and +<position> is the position of the pattern within that source. + +If no pattern matches a given path, nothing will be output for that +path. + +SEE ALSO +-------- +linkgit:gitignore[5] +linkgit:gitconfig[5] +linkgit:git-ls-files[5] + +GIT +--- +Part of the linkgit:git[1] suite diff --git a/Documentation/gitignore.txt b/Documentation/gitignore.txt index c1f692a..7ba16fe 100644 --- a/Documentation/gitignore.txt +++ b/Documentation/gitignore.txt @@ -155,8 +155,10 @@ The second .gitignore prevents git from ignoring SEE ALSO -------- -linkgit:git-rm[1], linkgit:git-update-index[1], -linkgit:gitrepository-layout[5] +linkgit:git-rm[1], +linkgit:git-update-index[1], +linkgit:gitrepository-layout[5], +linkgit:git-check-ignore[1] GIT --- diff --git a/Makefile b/Makefile index 272ab69..ce5e42f 100644 --- a/Makefile +++ b/Makefile @@ -825,6 +825,7 @@ BUILTIN_OBJS += builtin/branch.o BUILTIN_OBJS += builtin/bundle.o BUILTIN_OBJS += builtin/cat-file.o BUILTIN_OBJS += builtin/check-attr.o +BUILTIN_OBJS += builtin/check-ignore.o BUILTIN_OBJS += builtin/check-ref-format.o BUILTIN_OBJS += builtin/checkout-index.o BUILTIN_OBJS += builtin/checkout.o diff --git a/builtin.h b/builtin.h index 8e37752..f812c97 100644 --- a/builtin.h +++ b/builtin.h @@ -57,6 +57,7 @@ extern int cmd_cat_file(int argc, const char **argv, const char *prefix); extern int cmd_checkout(int argc, const char **argv, const char *prefix); extern int cmd_checkout_index(int argc, const char **argv, const char *prefix); extern int cmd_check_attr(int argc, const char **argv, const char *prefix); +extern int cmd_check_ignore(int argc, const char **argv, const char *prefix); extern int cmd_check_ref_format(int argc, const char **argv, const char *prefix); extern int cmd_cherry(int argc, const char **argv, const char *prefix); extern int cmd_cherry_pick(int argc, const char **argv, const char *prefix); diff --git a/builtin/add.c b/builtin/add.c index a7ed2ad..af68c32 100644 --- a/builtin/add.c +++ b/builtin/add.c @@ -273,7 +273,7 @@ static int add_files(struct dir_struct *dir, int flags) fprintf(stderr, _(ignore_error)); for (i = 0; i < dir->ignored_nr; i++) fprintf(stderr, "%s\n", dir->ignored[i]->name); - fprintf(stderr, _("Use -f if you really want to add them.\n")); + fprintf(stderr, _("Use -f if you really want to add them, or git check-ignore to see\nwhy they're ignored.\n")); die(_("no files added")); } diff --git a/builtin/check-ignore.c b/builtin/check-ignore.c new file mode 100644 index 0000000..146c00b --- /dev/null +++ b/builtin/check-ignore.c @@ -0,0 +1,150 @@ +#include "builtin.h" +#include "cache.h" +#include "dir.h" +#include "quote.h" +#include "pathspec.h" +#include "parse-options.h" + +static int stdin_paths; +static const char * const check_ignore_usage[] = { +"git check-ignore pathname...", +"git check-ignore --stdin [-z] < <list-of-paths>", +NULL +}; + +static int null_term_line; + +static const struct option check_ignore_options[] = { + OPT_BOOLEAN(0 , "stdin", &stdin_paths, "read file names from stdin"), + OPT_BOOLEAN('z', NULL, &null_term_line, + "input paths are terminated by a null character"), + OPT_END() +}; + +static void output_exclude(const char *path, struct exclude *exclude) +{ + char *type = exclude->to_exclude ? "excluded" : "included"; + char *bang = exclude->to_exclude ? "" : "!"; + char *dir = (exclude->flags & EXC_FLAG_MUSTBEDIR) ? "/" : ""; + printf(_("%s: %s %s%s%s "), path, type, bang, exclude->pattern, dir); + if (exclude->srcpos > 0) { + printf("%s %d", exclude->src, exclude->srcpos); + } + else { + /* Exclude was from CLI parameter. This code path is + * currently impossible to hit, but later on we might + * want to add ignore tracing to other commands such + * as git clean, which does accept --exclude. + */ + /* printf("%s %d", exclude->src, -exclude->srcpos); */ + } + printf("\n"); +} + +static void check_ignore(const char *prefix, const char **pathspec) +{ + struct dir_struct dir; + const char *path; + char *seen = NULL; + + /* read_cache() is only necessary so we can watch out for submodules. */ + if (read_cache() < 0) + die(_("index file corrupt")); + + memset(&dir, 0, sizeof(dir)); + dir.flags |= DIR_COLLECT_IGNORED; + setup_standard_excludes(&dir); + + if (pathspec) { + int i; + struct path_exclude_check check; + struct exclude *exclude; + + path_exclude_check_init(&check, &dir); + if (!seen) + seen = find_used_pathspec(pathspec); + for (i = 0; pathspec[i]; i++) { + path = pathspec[i]; + char *full_path = + prefix_path(prefix, prefix ? strlen(prefix) : 0, path); + treat_gitlink(full_path); + validate_path(prefix, full_path); + if (!seen[i] && path[0]) { + int dtype = DT_UNKNOWN; + exclude = path_excluded_1(&check, full_path, -1, &dtype); + if (exclude) { + output_exclude(path, exclude); + } + } + } + free(seen); + free_directory(&dir); + path_exclude_check_clear(&check); + } + else { + printf("no pathspec\n"); + } +} + +static void check_ignore_stdin_paths(const char *prefix) +{ + struct strbuf buf, nbuf; + char **pathspec = NULL; + size_t nr = 0, alloc = 0; + int line_termination = null_term_line ? 0 : '\n'; + + strbuf_init(&buf, 0); + strbuf_init(&nbuf, 0); + while (strbuf_getline(&buf, stdin, line_termination) != EOF) { + if (line_termination && buf.buf[0] == '"') { + strbuf_reset(&nbuf); + if (unquote_c_style(&nbuf, buf.buf, NULL)) + die("line is badly quoted"); + strbuf_swap(&buf, &nbuf); + } + ALLOC_GROW(pathspec, nr + 1, alloc); + pathspec[nr] = xcalloc(strlen(buf.buf) + 1, sizeof(*buf.buf)); + strcpy(pathspec[nr++], buf.buf); + } + ALLOC_GROW(pathspec, nr + 1, alloc); + pathspec[nr] = NULL; + check_ignore(prefix, (const char **)pathspec); + maybe_flush_or_die(stdout, "attribute to stdout"); + strbuf_release(&buf); + strbuf_release(&nbuf); + free(pathspec); +} + +static NORETURN void error_with_usage(const char *msg) +{ + error("%s", msg); + usage_with_options(check_ignore_usage, check_ignore_options); +} + +int cmd_check_ignore(int argc, const char **argv, const char *prefix) +{ + git_config(git_default_config, NULL); + + argc = parse_options(argc, argv, prefix, check_ignore_options, + check_ignore_usage, 0); + + if (stdin_paths) { + if (0 < argc) + error_with_usage("Can't specify files with --stdin"); + } else { + if (null_term_line) + error_with_usage("-z only makes sense with --stdin"); + + if (argc == 0) + error_with_usage("No path specified"); + } + + if (stdin_paths) + check_ignore_stdin_paths(prefix); + else { + check_ignore(prefix, argv); + maybe_flush_or_die(stdout, "ignore to stdout"); + } + + return 0; +} diff --git a/command-list.txt b/command-list.txt index 7e8cfec..bf83303 100644 --- a/command-list.txt +++ b/command-list.txt @@ -12,6 +12,7 @@ git-branch mainporcelain common git-bundle mainporcelain git-cat-file plumbinginterrogators git-check-attr purehelpers +git-check-ignore purehelpers git-checkout mainporcelain common git-checkout-index plumbingmanipulators git-check-ref-format purehelpers diff --git a/contrib/completion/git-completion.bash b/contrib/completion/git-completion.bash index 222b804..26d798f 100644 --- a/contrib/completion/git-completion.bash +++ b/contrib/completion/git-completion.bash @@ -594,6 +594,7 @@ __git_list_porcelain_commands () archimport) : import;; cat-file) : plumbing;; check-attr) : plumbing;; + check-ignore) : plumbing;; check-ref-format) : plumbing;; checkout-index) : plumbing;; commit-tree) : plumbing;; diff --git a/git.c b/git.c index 8788b32..6caf78a 100644 --- a/git.c +++ b/git.c @@ -338,6 +338,7 @@ static void handle_internal_command(int argc, const char **argv) { "bundle", cmd_bundle, RUN_SETUP_GENTLY }, { "cat-file", cmd_cat_file, RUN_SETUP }, { "check-attr", cmd_check_attr, RUN_SETUP }, + { "check-ignore", cmd_check_ignore, RUN_SETUP | NEED_WORK_TREE }, { "check-ref-format", cmd_check_ref_format }, { "checkout", cmd_checkout, RUN_SETUP | NEED_WORK_TREE }, { "checkout-index", cmd_checkout_index, diff --git a/t/t0007-ignores.sh b/t/t0007-ignores.sh new file mode 100755 index 0000000..4407634 --- /dev/null +++ b/t/t0007-ignores.sh @@ -0,0 +1,301 @@ +#!/bin/sh + +test_description=gitignores + +. ./test-lib.sh + +init_vars () { + global_excludes="$HOME/global-excludes" +} + +enable_global_excludes () { + init_vars + git config core.excludesfile "$global_excludes" +} + +ignore_check () { + paths="$1" expected="$2" global_args="$3" + + if test -z "$expected"; then + >"$HOME/expected" # avoid newline + else + echo "$expected" >"$HOME/expected" + fi && + run_check_ignore "$paths" "$global_args" +} + +expect () { + echo "$*" >"$HOME/expected" +} + +run_check_ignore () { + args="$1" global_args="$2" + + init_vars && + rm -f "$HOME/stdout" "$HOME/stderr" "$HOME/cmd" && + echo `which git` $global_args check-ignore $args >"$HOME/cmd" && + pwd >"$HOME/pwd" && + git $global_args check-ignore $args >"$HOME/stdout" 2>"$HOME/stderr" && + test_cmp "$HOME/expected" "$HOME/stdout" && + test_line_count = 0 "$HOME/stderr" +} + +test_expect_success 'setup' ' + init_vars + mkdir -p a/b/ignored-dir a/submodule b && + ln -s b a/symlink && + ( + cd a/submodule && + git init && + echo a > a && + git add a && + git commit -m"commit in submodule" + ) && + git add a/submodule && + cat <<-EOF >.gitignore && + one + EOF + cat <<-EOF >a/.gitignore && + two* + *three + EOF + cat <<-EOF >a/b/.gitignore && + four + five + # this comment should affect the line numbers + six + ignored-dir/ + # and so should this blank line: + + !on* + !two + EOF + echo "seven" >a/b/ignored-dir/.gitignore && + test -n "$HOME" && + cat <<-EOF >"$global_excludes" + globalone + !globaltwo + globalthree + EOF +' + +test_expect_success 'empty command line' ' + test_must_fail git check-ignore 2>"$HOME/stderr" && + grep -q "error: No path specified" "$HOME/stderr" +' + +test_expect_success 'erroneous use of --' ' + test_must_fail git check-ignore -- 2>"$HOME/stderr" && + grep -q "error: No path specified" "$HOME/stderr" +' + +test_expect_success '--stdin with superfluous arg' ' + test_must_fail git check-ignore --stdin foo 2>"$HOME/stderr" && + grep -q "Can'\''t specify files with --stdin" "$HOME/stderr" +' + +test_expect_success '--stdin -z with superfluous arg' ' + test_must_fail git check-ignore --stdin -z foo 2>"$HOME/stderr" && + grep -q "Can'\''t specify files with --stdin" "$HOME/stderr" +' + +test_expect_success '-z without --stdin' ' + test_must_fail git check-ignore -z 2>"$HOME/stderr" && + grep -q "error: -z only makes sense with --stdin" "$HOME/stderr" +' + +test_expect_success '-z without --stdin and superfluous arg' ' + test_must_fail git check-ignore -z foo 2>"$HOME/stderr" && + grep -q "error: -z only makes sense with --stdin" "$HOME/stderr" +' + +test_expect_success 'needs work tree' ' + ( + cd .git && + test_must_fail git check-ignore foo 2>"$HOME/stderr" + ) && + grep -q "fatal: This operation must be run in a work tree" "$HOME/stderr" + +' +test_expect_success 'top-level not ignored' ' + ignore_check foo "" +' + +test_expect_success 'top-level ignored' ' + ignore_check one "one: excluded one .gitignore 1" +' + +test_expect_success 'sub-directory ignore from top' ' + expect "a/one: excluded one .gitignore 1" && + run_check_ignore a/one +' + +test_expect_success 'sub-directory local ignore' ' + expect "a/3-three: excluded *three a/.gitignore 2" && + run_check_ignore "a/3-three a/three-not-this-one" +' + +test_expect_success 'sub-directory local ignore inside a' ' + expect "3-three: excluded *three a/.gitignore 2" && + ( + cd a && + run_check_ignore "3-three three-not-this-one" + ) +' + +test_expect_success 'nested include' ' + expect "a/b/one: included !on* a/b/.gitignore 8" && + run_check_ignore "a/b/one" +' + +test_expect_success 'ignored sub-directory' ' + expect "a/b/ignored-dir: excluded ignored-dir/ a/b/.gitignore 5" && + run_check_ignore "a/b/ignored-dir" +' + +test_expect_success 'multiple files inside ignored sub-directory' ' + cat <<-EOF >"$HOME/expected" && + a/b/ignored-dir/foo: excluded ignored-dir/ a/b/.gitignore 5 + a/b/ignored-dir/twoooo: excluded ignored-dir/ a/b/.gitignore 5 + a/b/ignored-dir/seven: excluded ignored-dir/ a/b/.gitignore 5 + EOF + run_check_ignore "a/b/ignored-dir/foo a/b/ignored-dir/twoooo a/b/ignored-dir/seven" +' + +test_expect_success 'cd to ignored sub-directory' ' + cat <<-EOF >"$HOME/expected" && + foo: excluded ignored-dir/ a/b/.gitignore 5 + twoooo: excluded ignored-dir/ a/b/.gitignore 5 + ../one: included !on* a/b/.gitignore 8 + seven: excluded ignored-dir/ a/b/.gitignore 5 + ../../one: excluded one .gitignore 1 + EOF + ( + cd a/b/ignored-dir && + run_check_ignore "foo twoooo ../one seven ../../one" + ) +' + +test_expect_success 'symlink' ' + ignore_check "a/symlink" "" +' + +test_expect_success 'beyond a symlink' ' + test_must_fail git check-ignore "a/symlink/foo" +' + +test_expect_success 'beyond a symlink from subdirectory' ' + ( + cd a && + test_must_fail git check-ignore "symlink/foo" + ) +' + +test_expect_success 'submodule' ' + test_must_fail git check-ignore "a/submodule/one" 2>"$HOME/stderr" && + expect "fatal: Path '\''a/submodule/one'\'' is in submodule '\''a/submodule'\''" && + test_cmp "$HOME/expected" "$HOME/stderr" +' + +test_expect_success 'submodule from subdirectory' ' + ( + cd a && + test_must_fail git check-ignore "submodule/one" 2>"$HOME/stderr" + ) && + expect "fatal: Path '\''a/submodule/one'\'' is in submodule '\''a/submodule'\''" && + test_cmp "$HOME/expected" "$HOME/stderr" +' + +test_expect_success 'global ignore not yet enabled' ' + expect "a/globalthree: excluded *three a/.gitignore 2" && + run_check_ignore "globalone a/globalthree a/globaltwo" +' + +test_expect_success 'global ignore' ' + enable_global_excludes && + cat <<-EOF >"$HOME/expected" && + globalone: excluded globalone $global_excludes 1 + globalthree: excluded globalthree $global_excludes 3 + a/globalthree: excluded *three a/.gitignore 2 + globaltwo: included !globaltwo $global_excludes 2 + EOF + run_check_ignore "globalone globalthree a/globalthree globaltwo" +' + +test_expect_success '--stdin' ' + cat <<-EOF >in.txt && + one + a/one + a/b/on + a/b/one + a/b/two + a/b/twooo + globaltwo + a/globaltwo + a/b/globaltwo + b/globaltwo + EOF + cat <<-EOF >"$HOME/expected" && + one: excluded one .gitignore 1 + a/one: excluded one .gitignore 1 + a/b/on: included !on* a/b/.gitignore 8 + a/b/one: included !on* a/b/.gitignore 8 + a/b/two: included !two a/b/.gitignore 9 + a/b/twooo: excluded two* a/.gitignore 1 + globaltwo: included !globaltwo $global_excludes 2 + a/globaltwo: included !globaltwo $global_excludes 2 + a/b/globaltwo: included !globaltwo $global_excludes 2 + b/globaltwo: included !globaltwo $global_excludes 2 + EOF + run_check_ignore --stdin < in.txt +' + +test_expect_success '--stdin -z' ' + tr "\n" "\0" < in.txt | run_check_ignore "--stdin -z" +' + +test_expect_success '-z --stdin' ' + tr "\n" "\0" < in.txt | run_check_ignore "-z --stdin" +' + +test_expect_success '--stdin from subdirectory' ' + cat <<-EOF >in.txt && + ../one + one + b/on + b/one + b/two + b/twooo + ../globaltwo + globaltwo + b/globaltwo + ../b/globaltwo + EOF + cat <<-EOF >"$HOME/expected" && + ../one: excluded one .gitignore 1 + one: excluded one .gitignore 1 + b/on: included !on* a/b/.gitignore 8 + b/one: included !on* a/b/.gitignore 8 + b/two: included !two a/b/.gitignore 9 + b/twooo: excluded two* a/.gitignore 1 + ../globaltwo: included !globaltwo $global_excludes 2 + globaltwo: included !globaltwo $global_excludes 2 + b/globaltwo: included !globaltwo $global_excludes 2 + ../b/globaltwo: included !globaltwo $global_excludes 2 + EOF + ( + cd a && + run_check_ignore --stdin < ../in.txt + ) +' + +test_expect_success '--stdin -z from subdirectory' ' + tr "\n" "\0" < in.txt | ( cd a && run_check_ignore "--stdin -z" ) +' + +test_expect_success '-z --stdin from subdirectory' ' + tr "\n" "\0" < in.txt | ( cd a && run_check_ignore "-z --stdin" ) +' + + +test_done -- 1.7.12.155.ge5750d5.dirty -- To unsubscribe from this list: send the line "unsubscribe git" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
