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wrapper: move is_empty_file() and rename it as is_empty_or_missing_file() 

is_empty_file() can help to refactor a lot of code. This will be very
helpful in porting "git bisect" to C.

Suggested-by: Torsten Bögershausen <tboegi@web.de>
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>
This commit is contained in:
Pranit Bauva 2019-01-02 07:38:32 -08:00 committed by Junio C Hamano
parent 0f30233a11
commit e3b1e3bdc0
3 changed files with 18 additions and 18 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
builtin/am.c
View File

@ -34,22 +34,6 @@
#include "packfile.h"
#include "repository.h"
/**
* Returns 1 if the file is empty or does not exist, 0 otherwise.
*/
static int is_empty_file(const char *filename)
{
struct stat st;
if (stat(filename, &st) < 0) {
if (errno == ENOENT)
return 1;
die_errno(_("could not stat %s"), filename);
}
return !st.st_size;
}
/**
* Returns the length of the first line of msg.
*/
@ -1220,7 +1204,7 @@ static int parse_mail(struct am_state *state, const char *mail)
goto finish;
}
if (is_empty_file(am_path(state, "patch"))) {
if (is_empty_or_missing_file(am_path(state, "patch"))) {
printf_ln(_("Patch is empty."));
die_user_resolve(state);
}
@ -1803,7 +1787,7 @@ next:
resume = 0;
}
if (!is_empty_file(am_path(state, "rewritten"))) {
if (!is_empty_or_missing_file(am_path(state, "rewritten"))) {
assert(state->rebasing);
copy_notes_for_rebase(state);
run_post_rewrite_hook(state);

3
cache.h
View File

@ -1788,4 +1788,7 @@ void safe_create_dir(const char *dir, int share);
*/
extern int print_sha1_ellipsis(void);
/* Return 1 if the file is empty or does not exists, 0 otherwise. */
extern int is_empty_or_missing_file(const char *filename);
#endif /* CACHE_H */

13
wrapper.c
View File

@ -690,3 +690,16 @@ int xgethostname(char *buf, size_t len)
buf[len - 1] = 0;
return ret;
}
int is_empty_or_missing_file(const char *filename)
{
struct stat st;
if (stat(filename, &st) < 0) {
if (errno == ENOENT)
return 1;
die_errno(_("could not stat %s"), filename);
}
return !st.st_size;
}