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Revert "Add a helper function to compare file contents"

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Now that during a `git clone`, the hooks' contents are no longer
compared to the templates' files', the caller for which the
`do_files_match()` function was introduced is gone, and therefore this
function can be retired, too.

This reverts commit 584de0b4c2 (Add a helper function to compare file
contents, 2024-03-30).

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Johannes Schindelin
2024-05-20 20:22:05 +00:00
committed by Junio C Hamano
parent 873a466ea3
commit 35dfccb2b4
4 changed files with 0 additions and 123 deletions
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58
copy.c
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@ -65,61 +65,3 @@ int copy_file_with_time(const char *dst, const char *src, int mode)
return copy_times(dst, src);
return status;
}
static int do_symlinks_match(const char *path1, const char *path2)
{
struct strbuf buf1 = STRBUF_INIT, buf2 = STRBUF_INIT;
int ret = 0;
if (!strbuf_readlink(&buf1, path1, 0) &&
!strbuf_readlink(&buf2, path2, 0))
ret = !strcmp(buf1.buf, buf2.buf);
strbuf_release(&buf1);
strbuf_release(&buf2);
return ret;
}
int do_files_match(const char *path1, const char *path2)
{
struct stat st1, st2;
int fd1 = -1, fd2 = -1, ret = 1;
char buf1[8192], buf2[8192];
if ((fd1 = open_nofollow(path1, O_RDONLY)) < 0 ||
fstat(fd1, &st1) || !S_ISREG(st1.st_mode)) {
if (fd1 < 0 && errno == ELOOP)
/* maybe this is a symbolic link? */
return do_symlinks_match(path1, path2);
ret = 0;
} else if ((fd2 = open_nofollow(path2, O_RDONLY)) < 0 ||
fstat(fd2, &st2) || !S_ISREG(st2.st_mode)) {
ret = 0;
}
if (ret)
/* to match, neither must be executable, or both */
ret = !(st1.st_mode & 0111) == !(st2.st_mode & 0111);
if (ret)
ret = st1.st_size == st2.st_size;
while (ret) {
ssize_t len1 = read_in_full(fd1, buf1, sizeof(buf1));
ssize_t len2 = read_in_full(fd2, buf2, sizeof(buf2));
if (len1 < 0 || len2 < 0 || len1 != len2)
ret = 0; /* read error or different file size */
else if (!len1) /* len2 is also 0; hit EOF on both */
break; /* ret is still true */
else
ret = !memcmp(buf1, buf2, len1);
}
if (fd1 >= 0)
close(fd1);
if (fd2 >= 0)
close(fd2);
return ret;
}