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| | #include "builtin.h"
#include "cache.h"
#include "parse-options.h"
#include "bisect.h"
#include "refs.h"
static GIT_PATH_FUNC(git_path_bisect_terms, "BISECT_TERMS")
static const char * const git_bisect_helper_usage[] = {
N_("git bisect--helper --next-all [--no-checkout]"),
N_("git bisect--helper --write-terms <bad_term> <good_term>"),
NULL
};
/*
* Check whether the string `term` belongs to the set of strings
* included in the variable arguments.
*/
static int one_of(const char *term, ...)
{
int res = 0;
va_list matches;
const char *match;
va_start(matches, term);
while (!res && (match = va_arg(matches, const char *)))
res = !strcmp(term, match);
va_end(matches);
return res;
}
static int check_term_format(const char *term, const char *orig_term)
{
struct strbuf new_term = STRBUF_INIT;
strbuf_addf(&new_term, "refs/bisect/%s", term);
if (check_refname_format(new_term.buf, 0)) {
strbuf_release(&new_term);
return error(_("'%s' is not a valid term"), term);
}
strbuf_release(&new_term);
if (one_of(term, "help", "start", "skip", "next", "reset",
"visualize", "replay", "log", "run", NULL))
return error(_("can't use the builtin command '%s' as a term"), term);
/*
* In theory, nothing prevents swapping completely good and bad,
* but this situation could be confusing and hasn't been tested
* enough. Forbid it for now.
*/
if ((strcmp(orig_term, "bad") && one_of(term, "bad", "new", NULL)) ||
(strcmp(orig_term, "good") && one_of(term, "good", "old", NULL)))
return error(_("can't change the meaning of the term '%s'"), term);
return 0;
}
static int write_terms(const char *bad, const char *good)
{
FILE *fp;
int res;
if (!strcmp(bad, good))
return error(_("please use two different terms"));
if (check_term_format(bad, "bad") || check_term_format(good, "good"))
return -1;
fp = fopen(git_path_bisect_terms(), "w");
if (!fp)
return error_errno(_("could not open the file BISECT_TERMS"));
res = fprintf(fp, "%s\n%s\n", bad, good);
fclose(fp);
return (res < 0) ? -1 : 0;
}
int cmd_bisect__helper(int argc, const char **argv, const char *prefix)
{
enum {
NEXT_ALL = 1,
WRITE_TERMS
} cmdmode = 0;
int no_checkout = 0;
struct option options[] = {
OPT_CMDMODE(0, "next-all", &cmdmode,
N_("perform 'git bisect next'"), NEXT_ALL),
OPT_CMDMODE(0, "write-terms", &cmdmode,
N_("write the terms to .git/BISECT_TERMS"), WRITE_TERMS),
OPT_BOOL(0, "no-checkout", &no_checkout,
N_("update BISECT_HEAD instead of checking out the current commit")),
OPT_END()
};
argc = parse_options(argc, argv, prefix, options,
git_bisect_helper_usage, 0);
if (!cmdmode)
usage_with_options(git_bisect_helper_usage, options);
switch (cmdmode) {
case NEXT_ALL:
return bisect_next_all(prefix, no_checkout);
case WRITE_TERMS:
if (argc != 2)
die(_("--write-terms requires two arguments"));
return write_terms(argv[0], argv[1]);
default:
die("BUG: unknown subcommand '%d'", cmdmode);
}
return 0;
}
|