An experiment in transpiling C source code to JavaScript using pycparser
Unlike emscriptem, for example, the compiled output is not low-level/asm.js but intended to resemble the high-level C source code as much as possible. The resulting JavaScript output is meant to be syntactically valid, but will not meaningfully execute without further manual porting efforts.
Usage:
sudo easy_install pycparser
python ptranspile.py hello.c
Example C input:
#include <stdio.h>
int main(int argc, char **argv) {
int a = 1;
const double pi = 3.14159;
static char *s = "foo";
printf("Hello, world!\n");
if (a == 2) exit(1);
return 0;
}Example JavaScript output:
function main(argc, argv)
{
let a = 1;
const pi = 3.14159;
let s = "foo";
printf("Hello, world!\n");
if (a === 2)
exit(1);
return 0;
}A more complex example: ls.js. (original source from FreeBSD /head/bin/ls/ls.c) Not all complex C programs will transpile successfully (patches welcome).
MIT