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96 lines
2.9 KiB
C
96 lines
2.9 KiB
C
/*
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* Copyright 2024 Google LLC
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "fake_resource_syscalls.h"
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#define PATH_STRING_LENGTH 512
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#define MAX_OPEN_FILES 512
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static FILE* resource_files[MAX_OPEN_FILES] = {NULL};
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static const uint32_t resource_start_index = 1; // must start at 1 so font resources work
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static uint32_t resource_index = resource_start_index;
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ResAppNum sys_get_current_resource_num(void) {
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return 0;
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}
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uint32_t sys_resource_load_file_as_resource(const char *filepath, const char *filename) {
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uint32_t resource_id = UINT32_MAX;
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char full_path[PATH_STRING_LENGTH];
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if (filepath) {
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snprintf(full_path, sizeof(full_path), "%s/%s", filepath, filename);
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} else {
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snprintf(full_path, sizeof(full_path), "%s", filename);
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}
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FILE* resource_file = fopen(full_path, "r");
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if (resource_file) {
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resource_files[resource_index] = resource_file;
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resource_id = resource_index;
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resource_index++; // Increment to next slot
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}
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return resource_id;
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}
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size_t sys_resource_size(ResAppNum app_num, uint32_t handle) {
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if (handle < UINT32_MAX) {
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FILE* resource_file = resource_files[handle];
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fseek(resource_file, 0, SEEK_END);
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size_t resource_size = ftell(resource_file);
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fseek(resource_file, 0, SEEK_SET);
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return resource_size;
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}
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return 0;
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}
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size_t sys_resource_load_range(ResAppNum app_num, uint32_t id, uint32_t start_bytes,
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uint8_t *buffer, size_t num_bytes) {
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if (buffer && id < UINT32_MAX) {
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FILE* resource_file = resource_files[id];
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fseek(resource_file, start_bytes, SEEK_SET);
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return fread(buffer, 1, num_bytes, resource_file);
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}
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return 0;
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}
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bool sys_resource_bytes_are_readonly(void *bytes) {
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return false;
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}
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const uint8_t *sys_resource_read_only_bytes(ResAppNum app_num, uint32_t resource_id,
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size_t *num_bytes_out) {
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return NULL;
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}
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uint32_t sys_resource_get_and_cache(ResAppNum app_num, uint32_t resource_id) {
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return resource_id;
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}
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bool sys_resource_is_valid(ResAppNum app_num, uint32_t resource_id) {
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return true;
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}
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void fake_resource_syscalls_cleanup(void) {
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for (int i = resource_start_index; i <= resource_index; i++) {
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FILE *resource_file = resource_files[i];
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if (resource_file) {
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fclose(resource_file);
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resource_files[i] = NULL;
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}
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}
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resource_index = resource_start_index;
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}
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