static public IList Unpack (string description, byte [] buffer, int startIndex) { DataConverter conv = CopyConv; var result = new List<object> (); int idx = startIndex; bool align = false; int repeat = 0, n; for (int i = 0; i < description.Length && idx < buffer.Length; ){ int save = i; switch (description [i]){ case '^': conv = BigEndian; break; case '_': conv = LittleEndian; break; case '%': conv = Native; break; case 'x': idx++; break; case '!': align = true; break; // Type Conversions case 'i': if (Prepare (buffer, ref idx, 4, ref align)){ result.Add (conv.GetInt32 (buffer, idx)); idx += 4; } break; case 'I': if (Prepare (buffer, ref idx, 4, ref align)){ result.Add (conv.GetUInt32 (buffer, idx)); idx += 4; } break; case 's': if (Prepare (buffer, ref idx, 2, ref align)){ result.Add (conv.GetInt16 (buffer, idx)); idx += 2; } break; case 'S': if (Prepare (buffer, ref idx, 2, ref align)){ result.Add (conv.GetUInt16 (buffer, idx)); idx += 2; } break; case 'l': if (Prepare (buffer, ref idx, 8, ref align)){ result.Add (conv.GetInt64 (buffer, idx)); idx += 8; } break; case 'L': if (Prepare (buffer, ref idx, 8, ref align)){ result.Add (conv.GetUInt64 (buffer, idx)); idx += 8; } break; case 'f': if (Prepare (buffer, ref idx, 4, ref align)){ result.Add (conv.GetFloat (buffer, idx)); idx += 4; } break; case 'd': if (Prepare (buffer, ref idx, 8, ref align)){ result.Add (conv.GetDouble (buffer, idx)); idx += 8; } break; case 'b': if (Prepare (buffer, ref idx, 1, ref align)){ result.Add (buffer [idx]); idx++; } break; case 'c': case 'C': if (Prepare (buffer, ref idx, 1, ref align)){ char c; if (description [i] == 'c') c = ((char) ((sbyte)buffer [idx])); else c = ((char) ((byte)buffer [idx])); result.Add (c); idx++; } break; // Repeat acount; case '1': case '2': case '3': case '4': case '5': case '6': case '7': case '8': case '9': repeat = ((short) description [i]) - ((short) '0'); save = i + 1; break; case '*': repeat = Int32.MaxValue; break; case '[': int count = -1, j; for (j = i+1; j < description.Length; j++){ if (description [j] == ']') break; n = ((short) description [j]) - ((short) '0'); if (n >= 0 && n <= 9){ if (count == -1) count = n; else count = count * 10 + n; } } if (count == -1) throw new ArgumentException ("invalid size specification"); i = j; save = i + 1; repeat = count; break; case '$': case 'z': // bool with_null = description [i] == 'z'; i++; if (i >= description.Length) throw new ArgumentException ("$ description needs a type specified", "description"); char d = description [i]; Encoding e; if (align){ idx = Align (idx, 4); align = false; } if (idx >= buffer.Length) break; switch (d){ case '8': e = Encoding.UTF8; n = 1; break; case '6': e = Encoding.Unicode; n = 2; break; case '7': e = Encoding.UTF7; n = 1; break; case 'b': e = Encoding.BigEndianUnicode; n = 2; break; case '3': e = Encoding.GetEncoding (12000); n = 4; break; case '4': e = Encoding.GetEncoding (12001); n = 4; break; default: throw new ArgumentException ("Invalid format for $ specifier", "description"); } int k = idx; switch (n){ case 1: for (; k < buffer.Length && buffer [k] != 0; k++) ; result.Add (e.GetChars (buffer, idx, k-idx)); if (k == buffer.Length) idx = k; else idx = k+1; break; case 2: for (; k < buffer.Length; k++){ if (k+1 == buffer.Length){ k++; break; } if (buffer [k] == 0 && buffer [k+1] == 0) break; } result.Add (e.GetChars (buffer, idx, k-idx)); if (k == buffer.Length) idx = k; else idx = k+2; break; case 4: for (; k < buffer.Length; k++){ if (k+3 >= buffer.Length){ k = buffer.Length; break; } if (buffer[k]==0 && buffer[k+1] == 0 && buffer[k+2] == 0 && buffer[k+3]== 0) break; } result.Add (e.GetChars (buffer, idx, k-idx)); if (k == buffer.Length) idx = k; else idx = k+4; break; } break; default: throw new ArgumentException (String.Format ("invalid format specified `{0}'", description [i])); } if (repeat > 0){ if (--repeat > 0) i = save; } else i++; } return result; }