7880ae2d |
1 | |
2 | |
3 | #include <string> |
4 | #include <vector> |
5 | |
97b26985 |
6 | #include <stdlib.h> |
7 | #include <unistd.h> |
8 | #include <string.h> |
09cb0f4f |
9 | #include <stdio.h> |
6c06db96 |
10 | |
97b26985 |
11 | #include "tape_block.hh" |
7880ae2d |
12 | |
13 | #include "silent_code.hh" |
14 | #include "hw_constants.hh" |
15 | |
16 | #include "eot_block.hh" |
97b26985 |
17 | #include "data_block.hh" |
7880ae2d |
18 | #include "broken_block.hh" |
0ec6e042 |
19 | #include "data_block_0.hh" |
09cb0f4f |
20 | #include "data_block_0_0.hh" |
21 | #include "data_block_0_1.hh" |
22 | #include "data_block_0_2.hh" |
23 | #include "data_block_0_3.hh" |
24 | #include "data_block_0_4.hh" |
25 | #include "data_block_0_10.hh" |
26 | #include "data_block_0_14.hh" |
27 | #include "data_block_0_24.hh" |
28 | #include "data_block_0_44.hh" |
29 | #include "data_block_0_30.hh" |
30 | #include "data_block_0_54.hh" |
31 | #include "data_block_0_60.hh" |
32 | #include "data_block_0_50.hh" |
fd9632c0 |
33 | #include "data_block_0_64.hh" |
34 | #include "data_block_1.hh" |
35 | #include "data_block_2.hh" |
36 | #include "data_block_3.hh" |
37 | #include "data_block_4.hh" |
38 | #include "data_block_5.hh" |
39 | #include "data_block_6.hh" |
40 | #include "data_block_7.hh" |
97b26985 |
41 | |
6c06db96 |
42 | using namespace std; |
43 | |
44 | /***************************************************************/ |
45 | /*! |
46 | *\brief Destructor. |
47 | */ |
48 | tape_block::~tape_block(){ |
49 | free(raw_data); |
50 | free(word_data); |
51 | } |
52 | |
53 | /***************************************************************/ |
54 | /*! |
55 | *\brief Copy constructor. |
56 | */ |
57 | tape_block::tape_block(tape_block & org){ |
58 | operator=(org); |
59 | } |
60 | |
61 | /***************************************************************/ |
62 | /*! |
63 | *\brief Assignment operator. |
64 | */ |
65 | void tape_block::operator=(tape_block &org){ |
66 | block_type=org.block_type; |
fed2c751 |
67 | discarded_bytes=org.discarded_bytes; |
6c06db96 |
68 | raw_data=0; |
69 | raw_size=org.raw_size; |
70 | word_data=0; |
71 | word_size=org.word_size; |
72 | if (raw_size){ |
73 | raw_data=(unsigned char *)malloc(raw_size); |
74 | memcpy(raw_data,org.raw_data,raw_size); |
75 | } |
76 | if (word_size){ |
77 | word_data=(unsigned short *)malloc(word_size*sizeof(unsigned short)); |
78 | memcpy(word_data,org.word_data,word_size*sizeof(unsigned short)); |
79 | } |
80 | } |
81 | |
6c06db96 |
82 | /***************************************************************/ |
83 | /*! |
84 | *\brief Determine the block's type |
85 | * |
86 | * This routine returns the block's type.\\ |
87 | *\retval TBT_DATA if it's a data block |
88 | *\retval TBT_EOT if it's an end of tape mark |
6c06db96 |
89 | * |
90 | *\note This function is virtual. That means that if the tape block in |
91 | * question is of the subtype data_block which overwrites this method, |
92 | * it will return the block type contained in the upper 4 bits of the |
93 | * first data word! Try to avoid testing for TBT_DATA. \n |
94 | * Blocks generated by gen_from_fd should never have TBT_DATA. |
95 | */ |
96 | int tape_block::get_type(){ |
97 | return block_type; |
98 | } |
99 | |
100 | /***************************************************************/ |
101 | /*! |
102 | *\brief Determine the block's subtype |
103 | * |
104 | * Some data block types have a subtype. |
105 | *\note This is a virtual method and to be used in derived classes. |
106 | *\return Always 0 |
107 | */ |
108 | int tape_block::get_subtype(){ |
109 | return 0; |
110 | } |
111 | |
112 | /***************************************************************/ |
113 | /*! |
114 | *\brief Get a cleartext description of the block. |
115 | *\return ldc style descriptive line for the block |
116 | */ |
117 | vector<string> tape_block:: get_description(){ |
6c06db96 |
118 | vector<string> result; |
09cb0f4f |
119 | result.insert(result.end(), |
120 | "***** "+get_typestring()+"Untyped tape block"); |
6c06db96 |
121 | return result; |
122 | } |
123 | |
124 | /***************************************************************/ |
125 | /*! |
126 | *\brief Get size of the internal raw data buffer |
127 | *\return The size of the internal raw data buffer |
128 | */ |
129 | int tape_block::get_raw_size(){ |
130 | return raw_size; |
131 | } |
132 | |
fed2c751 |
133 | /***************************************************************/ |
134 | /*! |
135 | *\brief Get amount of bytes discarded before beginning |
136 | * of block sensed. |
137 | *\return Length of unusable tape before block start delimiter. |
138 | */ |
139 | int tape_block::get_discarded_bytes(){ |
140 | return discarded_bytes; |
141 | } |
142 | |
6c06db96 |
143 | /***************************************************************/ |
144 | /*! |
145 | *\brief Access internal raw data buffer |
146 | * |
147 | * The raw data buffer contains all block data except the \ \ |
148 | * block start delimiter and block end delimiter. |
149 | *\return Pointer to internal raw data buffer of the block |
150 | */ |
151 | unsigned char * tape_block::get_raw_data(){ |
152 | return raw_data; |
153 | } |
154 | |
874a2bd8 |
155 | /***************************************************************/ |
156 | /*! |
157 | *\brief Dump contents of the block to a file descriptor. |
158 | * |
159 | *\param fd A writable file descriptor. |
160 | *\return Always zero. |
161 | *\throw io_error_exception A write error occured. |
162 | */ |
163 | int tape_block::dump_to_fd(int fd){ |
164 | int to_write=raw_size; |
165 | unsigned char * dump_ptr=raw_data; |
166 | int written; |
167 | while (to_write) { |
168 | written=write(fd,dump_ptr,to_write); |
169 | if (written < 0) throw io_error_exception(); |
170 | to_write-=written; |
171 | dump_ptr+=written; |
172 | } |
173 | return 0; |
174 | } |
175 | |
176 | /***************************************************************/ |
177 | /*! |
178 | *\brief Determine if the block marks the end of an object |
179 | *\retval true The block marks the end of an object. |
180 | *\retval false The block does not mark the end of an object. |
181 | *\note This is only a virtual method returning always false. |
182 | * Classes which can be the legal last block of an object |
183 | * will overwrite this method so that it returns true. |
184 | */ |
185 | bool tape_block::is_endblock(){ |
186 | return false; |
187 | } |
188 | |
189 | /***************************************************************/ |
190 | /*! |
191 | *\brief Get exported symbols. |
192 | *\return A vector containing any symbols exported in this block. |
193 | *\note This is only a virtual method returning always an empty |
194 | * vector. Classes describing appropriate data blocks |
195 | * will override this method. |
196 | */ |
197 | vector<string> tape_block::get_exported_symbols(){ |
198 | vector<string> result; |
199 | return result; |
200 | } |
201 | |
202 | /***************************************************************/ |
203 | /*! |
204 | *\brief Get called symbols. |
205 | *\return A vector containing any symbols called in this block. |
206 | *\note This is only a virtual method returning always an empty |
207 | * vector. Classes describing appropriate data blocks |
208 | * will override this method. |
209 | */ |
210 | vector<string> tape_block::get_called_symbols(){ |
211 | vector<string> result; |
212 | return result; |
213 | } |
214 | |
215 | /***************************************************************/ |
216 | /*! |
217 | *\brief Determine if the block has a known type. |
218 | *\return true if type and subtype are known. |
219 | *\return false if the block type is not one of the valid end |
220 | * nodes of the type tree. |
221 | */ |
222 | bool tape_block::has_known_type(){ |
223 | return m_has_known_type; |
224 | } |
225 | |
6c06db96 |
226 | /***************************************************************/ |
227 | /*! |
7880ae2d |
228 | *\brief Static factory method for tape blocks. |
6c06db96 |
229 | * |
230 | * This method creates a tape_block by using the private |
09cb0f4f |
231 | * constructor with file descriptor support.\n |
7880ae2d |
232 | * |
6c06db96 |
233 | * The factory method tries to determine the block's type and then |
234 | * looks for appropriate subclasses. If there's an appropriate |
235 | * subclass fitting the newly-created object, an |
236 | * object of the subclass will be created and a pointer to this |
237 | * object will be returned to the caller.\n |
238 | * This allows for easy use of the object using it's virtual |
239 | * interface methods or a cast of the pointer to a sub type pointer |
240 | * according to the type information, and then using the subtype's |
09cb0f4f |
241 | * methods not already present in tape_block.\n |
242 | * Objects of the following subclasses are automagically generated:\n |
6c06db96 |
243 | * - eot_block |
244 | * - data_block |
09cb0f4f |
245 | * - data_block_0 |
246 | * - data_block_0_0 |
247 | * - data_block_0_1 |
248 | * - data_block_0_2 |
249 | * - data_block_0_3 |
250 | * - data_block_0_4 |
251 | * - data_block_0_10 |
252 | * - data_block_0_14 |
253 | * - data_block_0_24 |
254 | * - data_block_0_30 |
255 | * - data_block_0_50 |
256 | * - data_block_0_54 |
257 | * - data_block_0_60 |
fd9632c0 |
258 | * - data_block_0_64 |
09cb0f4f |
259 | * - data_block_1 |
260 | * - data_block_2 |
261 | * - data_block_3 |
262 | * - data_block_4 |
263 | * - data_block_5 |
264 | * - data_block_6 |
265 | * - data_block_7 |
6c06db96 |
266 | * |
7880ae2d |
267 | *\return Pointer to an instance of tape_block or a subclass. |
268 | *\param fd A file descriptor where data can be read from. |
6c06db96 |
269 | *\param input_start A pointer to a function |
270 | * called before reading data from fd. |
271 | *\param input_stop A pointer to a function |
272 | * called after reading data from fd. |
273 | * |
274 | *\param start_stop_arg A pointer passed to input_start |
275 | * and input_stop(). Can be anything. |
276 | */ |
0ec6e042 |
277 | tape_block * tape_block::gen_from_fd(int fd, |
278 | void(*input_start)(void *), |
279 | void (*input_stop)(void *), |
280 | void * start_stop_arg) |
97b26985 |
281 | { |
fd9632c0 |
282 | tape_block * n_tape_block=0; |
283 | data_block * n_data_block=0; |
284 | data_block * n_data_block_x=0; |
285 | data_block_0 * n_data_block_0=0; |
286 | data_block_0 * n_data_block_0_x=0; |
287 | eot_block * n_eot_block=0; |
7880ae2d |
288 | broken_block * n_broken_block=0; |
289 | |
50c86ded |
290 | //Use the private constructor which reads in the block from a file descriptor |
7880ae2d |
291 | try{ |
fd9632c0 |
292 | n_tape_block=new tape_block(fd,input_start,input_stop,start_stop_arg); |
7880ae2d |
293 | } |
fd9632c0 |
294 | |
7880ae2d |
295 | catch(checksum_error_exception e){ |
296 | n_broken_block=new broken_block(*(e.get_block())); |
297 | delete e.get_block(); |
298 | throw checksum_error_exception(n_broken_block); |
299 | } |
300 | |
301 | // Retype to data_block, eot_block - if possible |
fd9632c0 |
302 | switch(n_tape_block->get_type()){ |
303 | case tape_block::TBT_DATA: |
304 | n_data_block = new data_block(*n_tape_block); |
0ec6e042 |
305 | break; |
09cb0f4f |
306 | case tape_block::TBT_EOT: |
fd9632c0 |
307 | n_eot_block=new eot_block(*n_tape_block); |
308 | delete n_tape_block; |
874a2bd8 |
309 | n_eot_block->m_has_known_type=true; |
fd9632c0 |
310 | return n_eot_block; |
50c86ded |
311 | default: // Unknown block, a bad thing! |
312 | return n_tape_block; |
0ec6e042 |
313 | } |
fd9632c0 |
314 | delete n_tape_block; |
315 | |
316 | // Now only data blocks are left |
317 | |
318 | switch(n_data_block->get_type()){ |
319 | case 00: n_data_block_0=new data_block_0(*n_data_block); break; |
320 | case 01: n_data_block_x=new data_block_1(*n_data_block); break; |
321 | case 02: n_data_block_x=new data_block_2(*n_data_block); break; |
322 | case 03: n_data_block_x=new data_block_3(*n_data_block); break; |
323 | case 04: n_data_block_x=new data_block_4(*n_data_block); break; |
324 | case 05: n_data_block_x=new data_block_5(*n_data_block); break; |
325 | case 06: n_data_block_x=new data_block_6(*n_data_block); break; |
326 | case 07: n_data_block_x=new data_block_7(*n_data_block); break; |
0ec6e042 |
327 | default: |
fd9632c0 |
328 | return n_data_block; |
329 | } |
330 | if (n_data_block_0==0){ // So we must have found another one |
331 | delete n_data_block; |
874a2bd8 |
332 | n_data_block_x->m_has_known_type=true; |
fd9632c0 |
333 | return n_data_block_x; |
0ec6e042 |
334 | } |
0ec6e042 |
335 | |
fd9632c0 |
336 | // Here only type 0 left |
fd9632c0 |
337 | switch(n_data_block_0->get_subtype()){ |
338 | case 000: n_data_block_0_x=new data_block_0_0(*n_data_block_0); break; |
339 | case 001: n_data_block_0_x=new data_block_0_1(*n_data_block_0); break; |
340 | case 002: n_data_block_0_x=new data_block_0_2(*n_data_block_0); break; |
341 | case 003: n_data_block_0_x=new data_block_0_3(*n_data_block_0); break; |
de6b6757 |
342 | case 004: n_data_block_0_x=new data_block_0_4(*n_data_block_0); break; |
fd9632c0 |
343 | case 010: n_data_block_0_x=new data_block_0_10(*n_data_block_0); break; |
344 | case 014: n_data_block_0_x=new data_block_0_14(*n_data_block_0); break; |
345 | case 024: n_data_block_0_x=new data_block_0_24(*n_data_block_0); break; |
346 | case 044: n_data_block_0_x=new data_block_0_44(*n_data_block_0); break; |
347 | case 030: n_data_block_0_x=new data_block_0_30(*n_data_block_0); break; |
348 | case 054: n_data_block_0_x=new data_block_0_54(*n_data_block_0); break; |
349 | case 060: n_data_block_0_x=new data_block_0_60(*n_data_block_0); break; |
350 | case 064: n_data_block_0_x=new data_block_0_64(*n_data_block_0); break; |
351 | case 050: n_data_block_0_x=new data_block_0_50(*n_data_block_0); break; |
0ec6e042 |
352 | default: |
fd9632c0 |
353 | return n_data_block_0; |
0ec6e042 |
354 | } |
fd9632c0 |
355 | delete n_data_block_0; |
874a2bd8 |
356 | n_data_block_0_x->m_has_known_type=true; |
fd9632c0 |
357 | return n_data_block_0_x; |
97b26985 |
358 | } |
359 | |
6c06db96 |
360 | /***************************************************************/ |
0ec6e042 |
361 | /*! |
362 | *\brief Default constructor. |
363 | */ |
364 | tape_block::tape_block(){} |
365 | |
09cb0f4f |
366 | /***************************************************************/ |
367 | /*! |
368 | *\brief get a short type description string. |
369 | *\return A small string to be used in description methods. |
370 | * |
371 | * The string is always 19 characters long.\n |
372 | * An example is "(99-99) ". |
373 | */ |
374 | string tape_block::get_typestring(){ |
375 | char buffer[13]; |
376 | sprintf(buffer,"(%o-%o) ",get_type(),get_subtype()); |
377 | buffer[10]=0; |
378 | return string(buffer); |
379 | } |
0ec6e042 |
380 | |
6c06db96 |
381 | /***************************************************************/ |
0ec6e042 |
382 | /*! |
383 | *\brief Automatic constructor with file descriptor support |
384 | * |
7880ae2d |
385 | * This constructor is used to initialise the block read in the |
386 | * block's data via a file descriptor.\n |
0ec6e042 |
387 | * This is done in the following way: |
388 | * - input_start() is called. |
389 | * - Data is read from fd. Stops on end of file or end of block |
390 | * or IO error. On EOF or IO error input_stop() is NOT called. |
391 | * - If there was no IO error the block's checksum is calculated |
392 | * and checked. |
393 | * - The block's type field is initialised. |
394 | * - input_stop() is called. |
395 | * |
396 | *\param fd A file descriptor where the read is taken from |
397 | *\param input_stop A pointer to a function called at the end of input |
398 | *\param input_start A pointer to a function called at the beginning |
399 | * of input |
400 | *\param start_stop_arg A pointer passed to input_start and input_stop(). |
401 | */ |
97b26985 |
402 | tape_block::tape_block (int fd, |
403 | void(*input_start)(void *), |
404 | void (*input_stop)(void *), |
405 | void * start_stop_arg |
406 | ) |
407 | { |
408 | unsigned char buffer; |
409 | int retval; |
410 | int eot_needed=EOT_LENGTH; |
411 | int eob_needed=EOB_LENGTH; |
412 | int block_complete=0; |
413 | |
7880ae2d |
414 | block_type= TBT_BROKEN; |
fed2c751 |
415 | discarded_bytes=0; |
97b26985 |
416 | raw_data = 0; |
417 | raw_size = 0; |
418 | word_data = 0; |
419 | word_size = 0; |
fed2c751 |
420 | poolsize = 1024; |
421 | |
422 | // Get initial portion of memory |
423 | raw_data=(unsigned char*)malloc(poolsize); |
424 | |
97b26985 |
425 | if (input_start) input_start (start_stop_arg); |
426 | |
427 | /* Look for block start in input stream */ |
428 | do { |
429 | retval=read(fd, &buffer, 1); |
430 | if (retval == 0){ // End of file |
7880ae2d |
431 | free(raw_data); |
432 | throw eof_legal_exception(discarded_bytes); |
97b26985 |
433 | return; |
434 | } |
435 | if (retval == -1){ // Error reading from fd |
7880ae2d |
436 | free(raw_data); |
437 | throw io_error_exception(); |
97b26985 |
438 | return; |
439 | } |
fed2c751 |
440 | discarded_bytes++; |
97b26985 |
441 | |
442 | /* Look for end ot tape sequence */ |
443 | switch(eot_needed){ |
444 | case 3: |
445 | if (buffer==EOT_SEQ_1) eot_needed--; |
446 | else eot_needed=EOT_LENGTH; |
447 | break; |
448 | case 2: |
449 | if (buffer==EOT_SEQ_2) eot_needed--; |
450 | else eot_needed=EOT_LENGTH; |
451 | break; |
452 | case 1: |
453 | if (buffer==EOT_SEQ_3){ |
7880ae2d |
454 | raw_data=(unsigned char*)realloc(raw_data,3); |
97b26985 |
455 | raw_size=3; |
fed2c751 |
456 | discarded_bytes-=3; |
97b26985 |
457 | raw_data[0]=EOT_SEQ_1; |
458 | raw_data[1]=EOT_SEQ_2; |
459 | raw_data[2]=EOT_SEQ_3; |
460 | block_type =TBT_EOT; |
97b26985 |
461 | return; |
462 | } |
463 | else eot_needed=EOT_LENGTH; |
464 | break; |
465 | } |
466 | } while (buffer != (unsigned char) BLOCK_START_DELIMITER); |
874a2bd8 |
467 | discarded_bytes--; // Don't want to declare the start delimiter discarded! |
fed2c751 |
468 | raw_size=1; // But we want to account it here! |
874a2bd8 |
469 | |
97b26985 |
470 | /* Now input the block data */ |
471 | block_complete = 0; |
874a2bd8 |
472 | |
473 | raw_data[0]=buffer; // Put the start delimiter in! |
474 | |
97b26985 |
475 | do { |
476 | retval = read (fd, &buffer, 1); |
477 | |
478 | if (retval == 0){ // End of file |
7880ae2d |
479 | broken_block * b_block=new broken_block(*this); |
480 | free(raw_data); |
481 | throw eof_illegal_exception(b_block); |
97b26985 |
482 | } |
483 | if (retval == -1){ // Error reading from fd |
7880ae2d |
484 | free(raw_data); |
485 | throw io_error_exception(); |
97b26985 |
486 | } |
97b26985 |
487 | |
488 | /* sort in the new byte */ |
489 | raw_size++; |
fed2c751 |
490 | // Need more memory?? |
874a2bd8 |
491 | if (raw_size>poolsize){ |
fed2c751 |
492 | poolsize+=1024; |
493 | raw_data=(unsigned char*)realloc(raw_data,poolsize); |
494 | } |
495 | |
874a2bd8 |
496 | raw_data[raw_size-1]=buffer; |
97b26985 |
497 | |
498 | /* Look for end ot block sequence */ |
499 | switch(eob_needed){ |
500 | case 2: |
501 | if (buffer==BLOCK_END_DELIMITER_1) eob_needed--; |
502 | else eob_needed=EOB_LENGTH; |
503 | break; |
504 | case 1: |
505 | if (buffer==BLOCK_END_DELIMITER_2){ |
97b26985 |
506 | block_complete=1; |
507 | } |
508 | else eob_needed=EOB_LENGTH; |
509 | break; |
510 | } |
511 | }while (!block_complete); |
7880ae2d |
512 | |
97b26985 |
513 | if (input_stop) input_stop (start_stop_arg); |
514 | |
7880ae2d |
515 | |
97b26985 |
516 | /* Now we have the data in. */ |
517 | |
518 | if (init_words()!=0){ |
7880ae2d |
519 | broken_block * b_block=new broken_block(*this); |
520 | free(raw_data); |
521 | free(word_data); |
522 | throw checksum_error_exception(b_block); |
97b26985 |
523 | } |
7880ae2d |
524 | |
97b26985 |
525 | if (test_checksum()!=0){ |
7880ae2d |
526 | broken_block * b_block=new broken_block(*this); |
527 | free(raw_data); |
528 | free(word_data); |
529 | throw checksum_error_exception(b_block); |
97b26985 |
530 | } |
97b26985 |
531 | block_type=TBT_DATA; |
97b26985 |
532 | } |
533 | |
97b26985 |
534 | |
6c06db96 |
535 | /***************************************************************/ |
0ec6e042 |
536 | /*! |
6c06db96 |
537 | *\brief Initialize word representation of data. |
538 | *\retval 0 on success. |
539 | *\retval 1 on error. |
0ec6e042 |
540 | */ |
97b26985 |
541 | int tape_block::init_words(){ |
874a2bd8 |
542 | word_size=(raw_size-EOB_LENGTH-1)/3; |
97b26985 |
543 | if (word_size<MINIMUM_DATA_BLOCK_WORDSIZE) return 1; // Block too short! |
7880ae2d |
544 | word_data=(unsigned short *)malloc(word_size*sizeof(unsigned short)); |
97b26985 |
545 | for (int pos=0; pos<word_size; pos++) |
874a2bd8 |
546 | word_data[pos]=combine466(raw_data+1+3*pos); |
97b26985 |
547 | return 0; |
548 | } |
549 | |
6c06db96 |
550 | /***************************************************************/ |
0ec6e042 |
551 | /*! |
6c06db96 |
552 | *\brief Calculate and check checksum. |
553 | *\retval 0 on success. |
554 | *\retval 1 on error. |
0ec6e042 |
555 | */ |
97b26985 |
556 | int tape_block::test_checksum(){ |
557 | unsigned short sum=0; |
558 | for (int pos=0; pos<word_size-1;pos++) |
0ec6e042 |
559 | sum^=word_data[pos]; |
97b26985 |
560 | if (sum==word_data[word_size-1]) return 0; |
561 | else return 1; |
562 | } |
6c06db96 |
563 | |
7880ae2d |
564 | /***************************************************************/ |
565 | /*! |
566 | *\brief Standard constructor of exception base class. |
567 | */ |
568 | tape_block::exception::exception(){ |
569 | } |
570 | |
571 | /***************************************************************/ |
572 | /*! |
573 | *\brief Standard desctructor. |
574 | */ |
575 | tape_block::exception::~exception(){ |
576 | } |
577 | |
578 | /***************************************************************/ |
579 | /*! |
580 | *\brief Get pointer to erroneous tape_block |
581 | *\return A pointer to a tape_block instance. |
582 | *\note The user has to take care to free the instance contained |
583 | * in objects of classes supporting this method. |
584 | */ |
585 | tape_block * tape_block::exception::get_block(){ |
586 | return m_broken_block; |
587 | } |
588 | |
589 | /***************************************************************/ |
590 | /*! |
591 | *\brief Constructor |
592 | */ |
593 | tape_block::checksum_error_exception:: |
594 | checksum_error_exception (tape_block * broken_block){ |
595 | this->m_broken_block=broken_block; |
596 | } |
597 | |
598 | /***************************************************************/ |
599 | /*! |
600 | *\brief Constructor |
601 | */ |
602 | tape_block::eof_illegal_exception:: |
603 | eof_illegal_exception (tape_block * broken_block){ |
604 | this->m_broken_block=broken_block; |
605 | } |
606 | |
607 | /***************************************************************/ |
608 | /*! |
609 | *\brief Constructor |
610 | *\param bytes_consumed Amount of bytes read while looking |
611 | * for a block. |
612 | */ |
613 | tape_block::eof_legal_exception:: |
614 | eof_legal_exception(int bytes_consumed){ |
615 | this->m_broken_block=NULL; |
616 | this->bytes_consumed=bytes_consumed; |
617 | } |
618 | |
619 | /***************************************************************/ |
620 | /*! |
621 | *\brief Get amount of consumed data before EOF came along. |
622 | *\return Amound of bytes read from fd while looking for |
623 | * new block or EOF. |
624 | */ |
625 | int tape_block::eof_legal_exception::get_consumed(){ |
626 | return bytes_consumed; |
627 | } |
628 | |
629 | /***************************************************************/ |
630 | /*! |
631 | *\brief Constructor |
632 | */ |
633 | tape_block::io_error_exception:: |
634 | io_error_exception(){ |
635 | this->m_broken_block=NULL; |
636 | } |
637 | |
638 | |
639 | |
640 | |
641 | |
642 | |