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1 | /****************************************************************************** |
2 | * |
3 | * LDC2 source code |
4 | * |
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5 | * $Date: 2007/12/23 15:25:11 $ |
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6 | * $Author: hachti $ |
7 | * |
8 | * $Log: tape_block.hh,v $ |
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9 | * Revision 2.1 2007/12/23 15:25:11 hachti |
10 | * *** empty log message *** |
11 | * |
12 | * Revision 2.0 2007-03-26 01:00:40 hachti |
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13 | * *** empty log message *** |
14 | * |
15 | * |
16 | ******************************************************************************/ |
17 | |
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18 | #ifndef TAPE_BLOCK_HH |
19 | #define TAPE_BLOCK_HH |
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20 | |
21 | using namespace std; |
22 | |
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23 | /*! |
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24 | *\brief Tape data block base class. |
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25 | * |
26 | * This class represents a Honeywell paper tape block. |
27 | * That may be some kind of data block or a end of tape mark. |
28 | */ |
29 | class tape_block{ |
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30 | |
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31 | public: // types |
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32 | |
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33 | /*! |
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34 | * Tape block types. |
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35 | */ |
36 | typedef enum { |
37 | TBT_DATA=0x10, //!< Data block |
38 | TBT_EOT, //!< End of tape block |
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39 | TBT_BROKEN, //!< A broken block |
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40 | } tb_type_t; |
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41 | |
42 | /*! |
43 | *\brief Local base class for exceptions. |
44 | */ |
45 | class exception { |
46 | protected: |
47 | exception(); |
48 | public: |
49 | virtual ~exception(); |
50 | tape_block * get_block(); |
51 | protected: |
52 | tape_block * m_broken_block; |
53 | }; |
54 | |
55 | /*! |
56 | *\brief Checksum error exception. |
57 | */ |
58 | class checksum_error_exception |
59 | : public exception { |
60 | public: |
61 | checksum_error_exception(tape_block * block); |
62 | }; |
63 | |
64 | /*! |
65 | *\brief EOF while reading block exception. |
66 | */ |
67 | class eof_illegal_exception |
68 | : public exception { |
69 | public: |
70 | eof_illegal_exception(tape_block * block); |
71 | }; |
72 | |
73 | /*! |
74 | *\brief EOF after reading block exception. |
75 | */ |
76 | class eof_legal_exception |
77 | : public exception { |
78 | public: |
79 | eof_legal_exception(int bytes_consumed); |
80 | int get_consumed(); |
81 | private: |
82 | int bytes_consumed; |
83 | tape_block * get_block(); |
84 | }; |
85 | |
86 | /*! |
87 | *\brief IO error exception. |
88 | */ |
89 | class io_error_exception |
90 | : exception { |
91 | public: |
92 | io_error_exception(); |
93 | private: |
94 | tape_block * get_block(); |
95 | }; |
96 | |
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97 | public: // methods |
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98 | virtual ~tape_block(); |
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99 | |
100 | tape_block(tape_block &); |
101 | void operator=(tape_block &); |
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102 | |
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103 | virtual int get_type(); |
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104 | virtual int get_subtype(); |
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105 | virtual vector<string> get_description(); |
106 | int get_raw_size(); |
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107 | int get_discarded_bytes(); |
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108 | unsigned char * get_raw_data(); |
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109 | virtual int dump_to_fd(int fd); |
110 | virtual bool is_endblock(); |
111 | virtual vector<string> get_exported_symbols(); |
112 | virtual vector<string> get_called_symbols(); |
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113 | virtual vector<string> dump_contents(); |
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114 | virtual bool has_known_type(); |
115 | |
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116 | static tape_block * gen_from_fd(int fd, |
117 | void(*input_start)(void *)=0, |
118 | void (*input_stop)(void *)=0, |
119 | void * start_stop_arg=0 |
120 | ); |
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121 | |
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122 | protected: // methods |
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123 | tape_block(); |
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124 | string get_typestring(); |
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125 | |
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126 | private: // methods |
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127 | tape_block (int fd_p, |
128 | void(*input_start)(void *)=0, |
129 | void (*input_stop)(void *)=0, |
130 | void * start_stop_arg=0 |
131 | ); |
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132 | |
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133 | int init_words(void); |
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134 | int test_checksum(); |
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135 | |
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136 | protected: // members |
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137 | int block_type; //!< Type of this block. |
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138 | bool m_has_known_type; //!< Block is of a documented type. |
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139 | int discarded_bytes; //!< Amount of bytes discarded before beginning. |
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140 | unsigned char * raw_data; //!< Raw block data in bytes. |
141 | int raw_size; //!< Size of the raw data. |
142 | unsigned short * word_data; //!< Data organized in machine words. |
143 | int word_size; //!< Size of the blocks in machine words. |
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144 | int poolsize; //!< Amount of data malloc'ed |
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145 | }; // class tape_block |
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146 | |
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147 | #endif |