79 lines
1.8 KiB
C
79 lines
1.8 KiB
C
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/* processlines.c */
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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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/* For brevity assumes a maximum file length of 16kB. */
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static void push_file_as_string(duk_context *ctx, const char *filename) {
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FILE *f;
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size_t len;
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char buf[16384];
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f = fopen(filename, "rb");
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if (f) {
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len = fread((void *) buf, 1, sizeof(buf), f);
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fclose(f);
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duk_push_lstring(ctx, (const char *) buf, (duk_size_t) len);
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} else {
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duk_push_undefined(ctx);
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}
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}
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int main(int argc, const char *argv[]) {
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duk_context *ctx = NULL;
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char line[4096];
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size_t idx;
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int ch;
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(void) argc; (void) argv;
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ctx = duk_create_heap_default();
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if (!ctx) {
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printf("Failed to create a Duktape heap.\n");
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exit(1);
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}
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push_file_as_string(ctx, "process.js");
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if (duk_peval(ctx) != 0) {
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printf("Error: %s\n", duk_safe_to_string(ctx, -1));
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goto finished;
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}
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duk_pop(ctx); /* ignore result */
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memset(line, 0, sizeof(line));
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idx = 0;
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for (;;) {
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if (idx >= sizeof(line)) {
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printf("Line too long\n");
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exit(1);
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}
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ch = fgetc(stdin);
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if (ch == 0x0a) {
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line[idx++] = '\0';
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duk_push_global_object(ctx);
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duk_get_prop_string(ctx, -1 /*index*/, "processLine");
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duk_push_string(ctx, line);
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if (duk_pcall(ctx, 1 /*nargs*/) != 0) {
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printf("Error: %s\n", duk_safe_to_string(ctx, -1));
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} else {
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printf("%s\n", duk_safe_to_string(ctx, -1));
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}
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duk_pop(ctx); /* pop result/error */
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idx = 0;
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} else if (ch == EOF) {
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break;
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} else {
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line[idx++] = (char) ch;
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}
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}
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finished:
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duk_destroy_heap(ctx);
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exit(0);
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}
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