Module: Lzmat

Defined in:
ext/lzmat.c

Class Method Summary collapse

Class Method Details

.decode(str_in) ⇒ Object 



71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
 
# File 'ext/lzmat.c', line 71

static VALUE rb_lzmat_decode(VALUE self, VALUE str_in) {
  unsigned char *pbOut, *pbIn;
  int cbOut, cbIn;
  int err;
  VALUE str_out;

  pbIn = StringValuePtr(str_in);
  cbIn = RSTRING(str_in)->len - sizeof(int);
  cbOut = *(int*)pbIn;
  str_out = rb_str_new(0, cbOut);
  pbOut = StringValuePtr(str_out);

  err = lzmat_decode(pbOut, &cbOut, pbIn + sizeof(int), cbIn);
  if (err) {
    lzmat_raise_error(err);
  }

  return str_out;
}

.encode(str_in) ⇒ Object 



47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
 
# File 'ext/lzmat.c', line 47

static VALUE rb_lzmat_encode(VALUE self, VALUE str_in) {
  unsigned char *pbOut, *pbIn;
  int cbOut, cbIn;
  int err;
  VALUE str_out;

  pbIn = StringValuePtr(str_in);
  cbIn = RSTRING(str_in)->len;
  cbOut = MAX_LZMAT_ENCODED_SIZE(cbIn);
  str_out = rb_str_new(0, cbOut + sizeof(int));
  pbOut = StringValuePtr(str_out);

  err = lzmat_encode(pbOut + sizeof(int), &cbOut, pbIn, cbIn);
  if (err) {
    lzmat_raise_error(err);
  }

  *(int*)pbOut = cbIn;

  rb_str_resize(str_out, cbOut + sizeof(int));

  return str_out;
}