/*
 * Copyright (C) 2019 Intel Corporation.  All rights reserved.
 * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 */

#include "bh_read_file.h"
#include "wasm_export.h"

static char *
build_module_path(const char *module_name)
{
    const char *module_search_path = ".";
    const char *format = "%s/%s.wasm";
    int sz = strlen(module_search_path) + strlen("/") + strlen(module_name)
             + strlen(".wasm") + 1;
    char *wasm_file_name = BH_MALLOC(sz);
    if (!wasm_file_name) {
        return NULL;
    }

    snprintf(wasm_file_name, sz, format, module_search_path, module_name);
    return wasm_file_name;
}

bool
reader(const char *module_name, uint8 **p_buffer, uint32 *p_size)
{
    char *wasm_file_path = build_module_path(module_name);
    if (!wasm_file_path) {
        return false;
    }

    *p_buffer = (uint8_t *)bh_read_file_to_buffer(wasm_file_path, p_size);
    BH_FREE(wasm_file_path);
    return *p_buffer != NULL;
}

void
destroyer(uint8 *buffer, uint32 size)
{
    if (!buffer) {
        return;
    }

    BH_FREE(buffer);
    buffer = NULL;
}