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#pragma once
#include "../backing.h"
#include "../range.h"
#include "file.h"
AL_IGNORE_WARNING("-Wunused-function")
static off_t file_backing_get_size_if_known(struct cch_backing *backing)
{
struct cch_backing_file *file = (struct cch_backing_file *)backing;
nn_mutex_lock(&file->mutex);
off_t size = file->backing.size;
nn_mutex_unlock(&file->mutex);
return size;
}
static void file_backing_finalize(struct cch_backing *backing)
{
struct cch_backing_file *file = (struct cch_backing_file *)backing;
nn_mutex_lock(&file->mutex);
file->backing.size = file->file.size;
nn_mutex_unlock(&file->mutex);
}
static bool file_open_internal(struct cch_backing_file *file, str *path, size_t size)
{
s32 flags = (size != 0) ? NNWT_FILE_CREATE : NNWT_FILE_READONLY;
if (al_str_cmp(path, &al_str_c("fd://"), 0, 5) == 0) {
str fd_str = al_str_substr(path, 5, path->length);
bool error;
s32 fd = (s32)al_str_to_long(&fd_str, 10, &error);
if (error) return false;
if (!nn_file_wrap_fd(&file->file, fd)) {
return false;
}
} else {
if (!nn_file_open(&file->file, path, flags)) {
return false;
}
}
size_t filesize = file->file.size;
if (!size) {
file->backing.size = filesize;
cch_backing_fill_range(&file->backing, 0, filesize);
} else if (filesize < size) {
nn_file_truncate(&file->file, size);
}
return true;
}
AL_IGNORE_WARNING_END
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