bisect--helper: `write_terms` shell function in C
Reimplement the `write_terms` shell function in C and add a `write-terms`
subcommand to `git bisect--helper` to call it from git-bisect.sh . Also
remove the subcommand `--check-term-format` as it can now be called from
inside the function write_terms() C implementation.
Also `|| exit` is added when calling write-terms subcommand from
git-bisect.sh so as to exit whenever there is an error.
Using `--write-terms` subcommand is a temporary measure to port shell
function to C so as to use the existing test suite. As more functions
are ported, this subcommand will be retired and its implementation will
be called by some other method.
Mentored-by: Lars Schneider <larsxschneider@gmail.com>
Mentored-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Pranit Bauva <pranit.bauva@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/builtin/bisect--helper.c b/builtin/bisect--helper.c
index db9091e..2bd2d39 100644
--- a/builtin/bisect--helper.c
+++ b/builtin/bisect--helper.c
@@ -4,9 +4,11 @@
#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 --check-term-format <term> <orig_term>"),
+ N_("git bisect--helper --write-terms <bad_term> <good_term>"),
NULL
};
@@ -57,18 +59,38 @@ static int check_term_format(const char *term, const char *orig_term)
return 0;
}
+static int write_terms(const char *bad, const char *good)
+{
+ FILE *fp = NULL;
+ 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);
+ res |= fclose(fp);
+ return (res < 0) ? -1 : 0;
+}
+
int cmd_bisect__helper(int argc, const char **argv, const char *prefix)
{
enum {
NEXT_ALL = 1,
- CHECK_TERM_FMT
+ 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, "check-term-format", &cmdmode,
- N_("check format of the term"), CHECK_TERM_FMT),
+ 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()
@@ -83,10 +105,10 @@ int cmd_bisect__helper(int argc, const char **argv, const char *prefix)
switch (cmdmode) {
case NEXT_ALL:
return bisect_next_all(prefix, no_checkout);
- case CHECK_TERM_FMT:
+ case WRITE_TERMS:
if (argc != 2)
- return error(_("--check-term-format requires two arguments"));
- return check_term_format(argv[0], argv[1]);
+ return error(_("--write-terms requires two arguments"));
+ return write_terms(argv[0], argv[1]);
default:
return error("BUG: unknown subcommand '%d'", cmdmode);
}
diff --git a/git-bisect.sh b/git-bisect.sh
index a727c59..a80fc44 100755
--- a/git-bisect.sh
+++ b/git-bisect.sh
@@ -209,7 +209,7 @@
eval "$eval true" &&
if test $must_write_terms -eq 1
then
- write_terms "$TERM_BAD" "$TERM_GOOD"
+ git bisect--helper --write-terms "$TERM_BAD" "$TERM_GOOD" || exit
fi &&
echo "git bisect start$orig_args" >>"$GIT_DIR/BISECT_LOG" || exit
#
@@ -557,18 +557,6 @@
fi
}
-write_terms () {
- TERM_BAD=$1
- TERM_GOOD=$2
- if test "$TERM_BAD" = "$TERM_GOOD"
- then
- die "$(gettext "please use two different terms")"
- fi
- git bisect--helper --check-term-format "$TERM_BAD" bad || exit
- git bisect--helper --check-term-format "$TERM_GOOD" good || exit
- printf '%s\n%s\n' "$TERM_BAD" "$TERM_GOOD" >"$GIT_DIR/BISECT_TERMS"
-}
-
check_and_set_terms () {
cmd="$1"
case "$cmd" in
@@ -582,13 +570,17 @@
bad|good)
if ! test -s "$GIT_DIR/BISECT_TERMS"
then
- write_terms bad good
+ TERM_BAD=bad
+ TERM_GOOD=good
+ git bisect--helper --write-terms "$TERM_BAD" "$TERM_GOOD" || exit
fi
;;
new|old)
if ! test -s "$GIT_DIR/BISECT_TERMS"
then
- write_terms new old
+ TERM_BAD=new
+ TERM_GOOD=old
+ git bisect--helper --write-terms "$TERM_BAD" "$TERM_GOOD" || exit
fi
;;
esac ;;
