git_off_t git_futils_filesize(git_file fd)
{
struct stat sb;
if (p_fstat(fd, &sb))
return GIT_ERROR;
return sb.st_size;
}
git_off_t git_futils_filesize(git_file fd)
{
struct stat sb;
if (p_fstat(fd, &sb)) {
giterr_set(GITERR_OS, "Failed to stat file descriptor");
return -1;
}
return sb.st_size;
}
int git_futils_readbuffer_updated(
git_buf *buf, const char *path, time_t *mtime, size_t *size, int *updated)
{
git_file fd;
struct stat st;
bool changed = false;
assert(buf && path && *path);
if (updated != NULL)
*updated = 0;
if ((fd = git_futils_open_ro(path)) < 0)
return fd;
if (p_fstat(fd, &st) < 0 || S_ISDIR(st.st_mode) || !git__is_sizet(st.st_size+1)) {
p_close(fd);
giterr_set(GITERR_OS, "Invalid regular file stat for '%s'", path);
return -1;
}
/*
* If we were given a time and/or a size, we only want to read the file
* if it has been modified.
*/
if (size && *size != (size_t)st.st_size)
changed = true;
if (mtime && *mtime != st.st_mtime)
changed = true;
if (!size && !mtime)
changed = true;
if (!changed) {
p_close(fd);
return 0;
}
if (mtime != NULL)
*mtime = st.st_mtime;
if (size != NULL)
*size = (size_t)st.st_size;
if (git_futils_readbuffer_fd(buf, fd, (size_t)st.st_size) < 0) {
p_close(fd);
return -1;
}
p_close(fd);
if (updated != NULL)
*updated = 1;
return 0;
}
int git_futils_readbuffer_updated(git_buf *buf, const char *path, time_t *mtime, int *updated)
{
git_file fd;
size_t len;
struct stat st;
assert(buf && path && *path);
if (updated != NULL)
*updated = 0;
if ((fd = git_futils_open_ro(path)) < 0)
return fd;
if (p_fstat(fd, &st) < 0 || S_ISDIR(st.st_mode) || !git__is_sizet(st.st_size+1)) {
p_close(fd);
giterr_set(GITERR_OS, "Invalid regular file stat for '%s'", path);
return -1;
}
/*
* If we were given a time, we only want to read the file if it
* has been modified.
*/
if (mtime != NULL && *mtime >= st.st_mtime) {
p_close(fd);
return 0;
}
if (mtime != NULL)
*mtime = st.st_mtime;
len = (size_t) st.st_size;
git_buf_clear(buf);
if (git_buf_grow(buf, len + 1) < 0) {
p_close(fd);
return -1;
}
buf->ptr[len] = '\0';
while (len > 0) {
ssize_t read_size = p_read(fd, buf->ptr, len);
if (read_size < 0) {
p_close(fd);
giterr_set(GITERR_OS, "Failed to read descriptor for '%s'", path);
return -1;
}
len -= read_size;
buf->size += read_size;
}
p_close(fd);
if (updated != NULL)
*updated = 1;
return 0;
}
