Encoding and Environment¶

Base64 encoding, random UUID v4 generation, and environment-variable access — the last pieces of the language layer.

#include "abscom/abs.h"

Base64¶

Function	Description
`var base64_encode(var str_obj)`	Base64-encode a string with standard `=` padding.

var b = base64_encode(v("hello"));
print(b);   /* aGVsbG8= */

Function	Description
`var uuid4(void)`	A random version-4 UUID string (36 characters, `8-4-4-4-12` shape).

print(uuid4());
/* 3c836059-65e7-45fd-87ac-4038737841fe */

The version nibble is always 4 and the variant nibble is one of 8/9/a/b, matching RFC 4122.

Function	Description
`var os_getenv(const char *key)`	The value of the environment variable, or `None` if unset.
`void os_setenv(const char key, const char val)`	Set (or overwrite) an environment variable.

os_setenv("ABS_MODE", "Pro");
var mode = os_getenv("ABS_MODE");
print(v("Mode:"), mode);   /* Mode: Pro */

On Windows, os_setenv uses a heap-allocated putenv so the value outlives the call; on POSIX it uses setenv(key, val, 1).

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