/*

* Copyright 2011 The Emscripten Authors. All rights reserved.

* Emscripten is available under two separate licenses, the MIT license and the

* University of Illinois/NCSA Open Source License. Both these licenses can be

* found in the LICENSE file.

*/

#define _GNU_SOURCE

#include <stdio.h>

#include <stdlib.h>

#include <unistd.h>

int main() {

printf("List:\n");

for (char** str = environ; *str; str++) {

printf("%s\n", *str);

}

printf("\n");

printf("getenv(PATH): %s\n", getenv("PATH"));

printf("getenv(NONEXISTENT): %s\n", getenv("NONEXISTENT"));

printf("setenv/0(PATH) ret: %d\n", setenv("PATH", "test", 0));

printf("getenv(PATH) after setenv/0: %s\n", getenv("PATH"));

printf("setenv/1(PATH) ret: %d\n", setenv("PATH", "test2", 1));

printf("getenv(PATH) after setenv/1: %s\n", getenv("PATH"));

printf("setenv(SET_VALUE) ret: %d\n", setenv("SET_VALUE", "test3", 0));

printf("setenv(SET_VALUE2) ret: %d\n", setenv("SET_VALUE2", "test4", 1));

printf("getenv(SET_VALUE): %s\n", getenv("SET_VALUE"));

printf("getenv(SET_VALUE2): %s\n", getenv("SET_VALUE2"));

char buffer[] = "PUT_VALUE=test5";

printf("putenv(PUT_VALUE) ret: %d\n", putenv(buffer));

printf("getenv(PUT_VALUE): %s\n", getenv("PUT_VALUE"));

buffer[10] = 'Q';

printf("getenv(PUT_VALUE) after alteration: %s\n", getenv("PUT_VALUE"));

printf("unsetenv(PUT_VALUE) ret: %d\n", unsetenv("PUT_VALUE"));

printf("getenv(PUT_VALUE) after unsetenv: %s\n", getenv("PUT_VALUE"));

printf("setenv(0) ret: %d\n", setenv(0, "foo", 1));

printf("setenv('') ret: %d\n", setenv("", "foo", 1));

printf("setenv(X=Y) ret: %d\n", setenv("X=Y", "foo", 1));

printf("unsetenv('') ret: %d\n", unsetenv(""));

printf("unsetenv(X=Y) ret: %d\n", unsetenv("X=Y"));

return 0;

}