85 lines
1.4 KiB
C
85 lines
1.4 KiB
C
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/*
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* File I/O binding example.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "duktape.h"
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/* Push file as a buffer. */
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void fileio_push_file_buffer(duk_context *ctx, const char *filename) {
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FILE *f = NULL;
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long len;
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void *buf;
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size_t got;
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if (!filename) {
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goto error;
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}
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f = fopen(filename, "rb");
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if (!f) {
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goto error;
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}
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if (fseek(f, 0, SEEK_END) != 0) {
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goto error;
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}
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len = ftell(f);
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if (fseek(f, 0, SEEK_SET) != 0) {
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goto error;
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}
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buf = duk_push_fixed_buffer(ctx, (size_t) len);
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got = fread(buf, 1, len, f);
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if (got != (size_t) len) {
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duk_pop(ctx);
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goto error;
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}
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fclose(f);
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return;
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error:
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if (f) {
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fclose(f);
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}
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duk_push_undefined(ctx);
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}
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/* Push file as a string. */
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void fileio_push_file_string(duk_context *ctx, const char *filename) {
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fileio_push_file_buffer(ctx, filename);
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if (duk_is_buffer_data(ctx, -1)) {
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duk_buffer_to_string(ctx, -1);
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}
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}
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static int fileio_readfile(duk_context *ctx) {
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const char *filename = duk_to_string(ctx, 0);
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fileio_push_file_buffer(ctx, filename);
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if (!duk_is_buffer_data(ctx, -1)) {
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return DUK_RET_ERROR;
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}
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return 1;
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}
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static duk_function_list_entry fileio_funcs[] = {
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{ "readfile", fileio_readfile, 1 },
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{ NULL, NULL, 0 }
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};
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void fileio_register(duk_context *ctx) {
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/* Set global 'FileIo'. */
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duk_push_global_object(ctx);
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duk_push_object(ctx);
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duk_put_function_list(ctx, -1, fileio_funcs);
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duk_put_prop_string(ctx, -2, "FileIo");
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duk_pop(ctx);
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}
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