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Fixed mm_idx_is_idx to return the correct result on Windows.

This commit is contained in:
Mark Bicknell 2018-07-17 10:17:44 +01:00 committed by Heng Li
parent 0e137670fc
commit 8c064a5f29
1 changed files with 6 additions and 1 deletions
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7
index.c
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@ -512,14 +512,19 @@ mm_idx_t *mm_idx_load(FILE *fp)
int64_t mm_idx_is_idx(const char *fn) int64_t mm_idx_is_idx(const char *fn)
{ {
int fd, is_idx = 0; int fd, is_idx = 0;
off_t ret, off_end; int64_t ret, off_end;
char magic[4]; char magic[4];
if (strcmp(fn, "-") == 0) return 0; // read from pipe; not an index if (strcmp(fn, "-") == 0) return 0; // read from pipe; not an index
fd = open(fn, O_RDONLY); fd = open(fn, O_RDONLY);
if (fd < 0) return -1; // error if (fd < 0) return -1; // error
#ifdef WIN32
if ((off_end = _lseeki64(fd, 0, SEEK_END)) >= 4) {
_lseeki64(fd, 0, SEEK_SET);
#else
if ((off_end = lseek(fd, 0, SEEK_END)) >= 4) { if ((off_end = lseek(fd, 0, SEEK_END)) >= 4) {
lseek(fd, 0, SEEK_SET); lseek(fd, 0, SEEK_SET);
#endif // WIN32
ret = read(fd, magic, 4); ret = read(fd, magic, 4);
if (ret == 4 && strncmp(magic, MM_IDX_MAGIC, 4) == 0) if (ret == 4 && strncmp(magic, MM_IDX_MAGIC, 4) == 0)
is_idx = 1; is_idx = 1;