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#include "builtin.h"

#include "cache.h"

#include "attr.h"

#include "quote.h"

#include "parse-options.h"

static int stdin_paths;

static const char * const check_attr_usage[] = {

"git check-attr attr... [--] pathname...",

"git check-attr --stdin attr... < <list-of-paths>",

NULL

};

static int null_term_line;

static const struct option check_attr_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 check_attr(int cnt, struct git_attr_check *check,

const char** name, const char *file)

{

int j;

if (git_checkattr(file, cnt, check))

die("git_checkattr died");

for (j = 0; j < cnt; j++) {

const char *value = check[j].value;

if (ATTR_TRUE(value))

value = "set";

else if (ATTR_FALSE(value))

value = "unset";

else if (ATTR_UNSET(value))

value = "unspecified";

quote_c_style(file, NULL, stdout, 0);

printf(": %s: %s\n", name[j], value);

}

}

static void check_attr_stdin_paths(int cnt, struct git_attr_check *check,

const char** name)

{

struct strbuf buf, nbuf;

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);

}

check_attr(cnt, check, name, buf.buf);

maybe_flush_or_die(stdout, "attribute to stdout");

}

strbuf_release(&buf);

strbuf_release(&nbuf);

}

int cmd_check_attr(int argc, const char **argv, const char *prefix)

{

struct git_attr_check *check;

int cnt, i, doubledash;

const char *errstr = NULL;

argc = parse_options(argc, argv, prefix, check_attr_options,

check_attr_usage, PARSE_OPT_KEEP_DASHDASH);

if (!argc)

usage_with_options(check_attr_usage, check_attr_options);

if (read_cache() < 0) {

die("invalid cache");

}

doubledash = -1;

for (i = 0; doubledash < 0 && i < argc; i++) {

if (!strcmp(argv[i], "--"))

doubledash = i;

}

/* If there is no double dash, we handle only one attribute */

if (doubledash < 0) {

cnt = 1;

doubledash = 0;

} else

cnt = doubledash;

doubledash++;

if (cnt <= 0)

errstr = "No attribute specified";

else if (stdin_paths && doubledash < argc)

errstr = "Can't specify files with --stdin";

if (errstr) {

error("%s", errstr);

usage_with_options(check_attr_usage, check_attr_options);

}

check = xcalloc(cnt, sizeof(*check));

for (i = 0; i < cnt; i++) {

const char *name;

struct git_attr *a;

name = argv[i];

a = git_attr(name);

if (!a)

return error("%s: not a valid attribute name", name);

check[i].attr = a;

}

if (stdin_paths)

check_attr_stdin_paths(cnt, check, argv);

else {

for (i = doubledash; i < argc; i++)

check_attr(cnt, check, argv, argv[i]);

maybe_flush_or_die(stdout, "attribute to stdout");

}

return 0;

}