Method: Hash#bencode

Defined in:
ext/b_encode/b_encode.c

#bencode ⇒ Object

Hash#bencode



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# File 'ext/b_encode/b_encode.c', line 143

static VALUE
rb_hash_bencode(VALUE hash) {
    int hash_size = RHASH_SIZE(hash);
    VALUE pieces[hash_size * 2];
    
    int idx = 0;
    struct foreach_info info = {&idx, pieces};

    rb_hash_foreach(hash, rb_hash_bencode_entry, (VALUE) &info);

    int total_len = 0;
    for (int i = 0; i < hash_size * 2; i++) {
        total_len += RSTRING_LEN(pieces[i]);
    }

    VALUE str = rb_str_new(NULL, total_len + 2);
    char *ptr = RSTRING_PTR(str);

    ptr[0] = 'd';

    int offset = 1;
    for (int i = 0; i < hash_size * 2; i++) {
        int entry_len = RSTRING_LEN(pieces[i]);
        memcpy(ptr + offset, RSTRING_PTR(pieces[i]), entry_len);
        offset += entry_len;
    }

    ptr[total_len + 1] = 'e';

    return str;
}