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-rw-r--r--builtin/check-attr.c189
1 files changed, 189 insertions, 0 deletions
diff --git a/builtin/check-attr.c b/builtin/check-attr.c
new file mode 100644
index 0000000..dd83397
--- /dev/null
+++ b/builtin/check-attr.c
@@ -0,0 +1,189 @@
+#define USE_THE_INDEX_COMPATIBILITY_MACROS
+#include "builtin.h"
+#include "cache.h"
+#include "config.h"
+#include "attr.h"
+#include "quote.h"
+#include "parse-options.h"
+
+static int all_attrs;
+static int cached_attrs;
+static int stdin_paths;
+static const char * const check_attr_usage[] = {
+N_("git check-attr [-a | --all | <attr>...] [--] <pathname>..."),
+N_("git check-attr --stdin [-z] [-a | --all | <attr>...]"),
+NULL
+};
+
+static int nul_term_line;
+
+static const struct option check_attr_options[] = {
+ OPT_BOOL('a', "all", &all_attrs, N_("report all attributes set on file")),
+ OPT_BOOL(0, "cached", &cached_attrs, N_("use .gitattributes only from the index")),
+ OPT_BOOL(0 , "stdin", &stdin_paths, N_("read file names from stdin")),
+ OPT_BOOL('z', NULL, &nul_term_line,
+ N_("terminate input and output records by a NUL character")),
+ OPT_END()
+};
+
+static void output_attr(struct attr_check *check, const char *file)
+{
+ int j;
+ int cnt = check->nr;
+
+ for (j = 0; j < cnt; j++) {
+ const char *value = check->items[j].value;
+
+ if (ATTR_TRUE(value))
+ value = "set";
+ else if (ATTR_FALSE(value))
+ value = "unset";
+ else if (ATTR_UNSET(value))
+ value = "unspecified";
+
+ if (nul_term_line) {
+ printf("%s%c" /* path */
+ "%s%c" /* attrname */
+ "%s%c" /* attrvalue */,
+ file, 0,
+ git_attr_name(check->items[j].attr), 0, value, 0);
+ } else {
+ quote_c_style(file, NULL, stdout, 0);
+ printf(": %s: %s\n",
+ git_attr_name(check->items[j].attr), value);
+ }
+ }
+}
+
+static void check_attr(const char *prefix,
+ struct attr_check *check,
+ int collect_all,
+ const char *file)
+{
+ char *full_path =
+ prefix_path(prefix, prefix ? strlen(prefix) : 0, file);
+
+ if (collect_all) {
+ git_all_attrs(&the_index, full_path, check);
+ } else {
+ git_check_attr(&the_index, full_path, check);
+ }
+ output_attr(check, file);
+
+ free(full_path);
+}
+
+static void check_attr_stdin_paths(const char *prefix,
+ struct attr_check *check,
+ int collect_all)
+{
+ struct strbuf buf = STRBUF_INIT;
+ struct strbuf unquoted = STRBUF_INIT;
+ strbuf_getline_fn getline_fn;
+
+ getline_fn = nul_term_line ? strbuf_getline_nul : strbuf_getline_lf;
+ while (getline_fn(&buf, stdin) != EOF) {
+ if (!nul_term_line && buf.buf[0] == '"') {
+ strbuf_reset(&unquoted);
+ if (unquote_c_style(&unquoted, buf.buf, NULL))
+ die("line is badly quoted");
+ strbuf_swap(&buf, &unquoted);
+ }
+ check_attr(prefix, check, collect_all, buf.buf);
+ maybe_flush_or_die(stdout, "attribute to stdout");
+ }
+ strbuf_release(&buf);
+ strbuf_release(&unquoted);
+}
+
+static NORETURN void error_with_usage(const char *msg)
+{
+ error("%s", msg);
+ usage_with_options(check_attr_usage, check_attr_options);
+}
+
+int cmd_check_attr(int argc, const char **argv, const char *prefix)
+{
+ struct attr_check *check;
+ int cnt, i, doubledash, filei;
+
+ if (!is_bare_repository())
+ setup_work_tree();
+
+ git_config(git_default_config, NULL);
+
+ argc = parse_options(argc, argv, prefix, check_attr_options,
+ check_attr_usage, PARSE_OPT_KEEP_DASHDASH);
+
+ if (read_cache() < 0) {
+ die("invalid cache");
+ }
+
+ if (cached_attrs)
+ git_attr_set_direction(GIT_ATTR_INDEX);
+
+ doubledash = -1;
+ for (i = 0; doubledash < 0 && i < argc; i++) {
+ if (!strcmp(argv[i], "--"))
+ doubledash = i;
+ }
+
+ /* Process --all and/or attribute arguments: */
+ if (all_attrs) {
+ if (doubledash >= 1)
+ error_with_usage("Attributes and --all both specified");
+
+ cnt = 0;
+ filei = doubledash + 1;
+ } else if (doubledash == 0) {
+ error_with_usage("No attribute specified");
+ } else if (doubledash < 0) {
+ if (!argc)
+ error_with_usage("No attribute specified");
+
+ if (stdin_paths) {
+ /* Treat all arguments as attribute names. */
+ cnt = argc;
+ filei = argc;
+ } else {
+ /* Treat exactly one argument as an attribute name. */
+ cnt = 1;
+ filei = 1;
+ }
+ } else {
+ cnt = doubledash;
+ filei = doubledash + 1;
+ }
+
+ /* Check file argument(s): */
+ if (stdin_paths) {
+ if (filei < argc)
+ error_with_usage("Can't specify files with --stdin");
+ } else {
+ if (filei >= argc)
+ error_with_usage("No file specified");
+ }
+
+ check = attr_check_alloc();
+ if (!all_attrs) {
+ for (i = 0; i < cnt; i++) {
+ const struct git_attr *a = git_attr(argv[i]);
+
+ if (!a)
+ return error("%s: not a valid attribute name",
+ argv[i]);
+ attr_check_append(check, a);
+ }
+ }
+
+ if (stdin_paths)
+ check_attr_stdin_paths(prefix, check, all_attrs);
+ else {
+ for (i = filei; i < argc; i++)
+ check_attr(prefix, check, all_attrs, argv[i]);
+ maybe_flush_or_die(stdout, "attribute to stdout");
+ }
+
+ attr_check_free(check);
+ return 0;
+}