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convert: make apply_filter() adhere to standard Git error handling

apply_filter() returns a boolean that tells the caller if it
"did convert or did not convert". The variable `ret` was used throughout
the function to track errors whereas `1` denoted success and `0`
failure. This is unusual for the Git source where `0` denotes success.

Rename the variable and flip its value to make the function easier
readable for Git developers.

Signed-off-by: Lars Schneider <larsxschneider@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Lars Schneider 2016-10-16 16:20:35 -07:00 committed by Junio C Hamano
parent bb643d8bf8
commit b84be55354

View File

@ -451,7 +451,7 @@ static int apply_filter(const char *path, const char *src, size_t len, int fd,
*
* (child --> cmd) --> us
*/
int ret = 1;
int err = 0;
struct strbuf nbuf = STRBUF_INIT;
struct async async;
struct filter_params params;
@ -477,23 +477,20 @@ static int apply_filter(const char *path, const char *src, size_t len, int fd,
return 0; /* error was already reported */
if (strbuf_read(&nbuf, async.out, len) < 0) {
error("read from external filter '%s' failed", cmd);
ret = 0;
err = error("read from external filter '%s' failed", cmd);
}
if (close(async.out)) {
error("read from external filter '%s' failed", cmd);
ret = 0;
err = error("read from external filter '%s' failed", cmd);
}
if (finish_async(&async)) {
error("external filter '%s' failed", cmd);
ret = 0;
err = error("external filter '%s' failed", cmd);
}
if (ret) {
if (!err) {
strbuf_swap(dst, &nbuf);
}
strbuf_release(&nbuf);
return ret;
return !err;
}
static struct convert_driver {