*** empty log message ***

[h316.git] / pc-tools / ldc2 / src / main.cpp

/******************************************************************************
 * 
 * LDC2 source code
 *
 * $Date: 2008/08/25 21:02:24 $
 * $Author: hachti $
 *
 * $Log: main.cpp,v $
 * Revision 2.4  2008/08/25 21:02:24  hachti
 * *** empty log message ***
 *
 * Revision 2.3  2007-05-30 02:51:16  hachti
 * Changed everything towards LDC2 use.
 * Worked on the buildlib.sh.
 * Centralized  buildlib.sh to a new lib/common directory.
 *
 * Revision 2.2  2007-03-26 03:20:31  hachti
 * *** empty log message ***
 *
 * Revision 2.1  2007-03-26 01:15:21  hachti
 * *** empty log message ***
 *
 * Revision 2.0  2007-03-26 01:00:40  hachti
 * *** empty log message ***
 *
 *
 ******************************************************************************/
 
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <stdlib.h>

#include <vector>
#include <string>
  
#include "config.hh"
#include "tool.hh"

#include "tape_block.hh"
#include "data_block_0.hh"

using namespace std;

#ifndef BUILD_STAMP
#define BUILD_STAMP ""
#endif

#ifndef VERSION
#define VERSION "0.0"
#endif

#define ID_STRING "\n     ldc2 - The X16 object tape analyser\n\
            (C) 2007 Philipp Hachtmann\n\n\
     Version %s, built %s\n     %s\n\n"

/******************************************************************************/

static FILE * stdwarn;       //! Suppressable warning output file pointer.
static vector<tape_block*> tape;     //! The whole tape contents.
static vector<vector<tape_block*> > objects; //! Tape content in objects.

static int errors  = 0;  //! Global error counter.
static int warnings= 0;  //! Global warning counter.
static int errcode = 0;  //! Error code for error exit routine.


/******************************************************************************/
/*!
 *\brief Error exit routine.
 *
 * This routine tests the global error counter and terminates the program
 * if necessary.
 */
void exit_on_error(){
  if (errors){
    fprintf(stderr,"Failed. (%i)\n",errcode);
    exit(errcode);
  }
}

  
/******************************************************************************/
/*!
 *\brief Read in Tape data and do some checks and messages.
 *
 * This routine reads in the tape data.
 * During reading in, checksums are checked and
 * /da001/ information is generated. No object integrity test.
 * Tape block object pointers are put into the global vector 
 * tape.
 */
void read_tape(){

  tape_block * block=0;  //! Pointer to current block.
  bool read_ahead=true;  //! Continue scanning for blocks.
  int read_pointer=0;    //! Read position in input.
  int block_start=0;     //! Start of block position in input.
  int block_end=0;       //! End of block position in input.
  int blocks_read=0;     //! Number of blocks read in.
  
  bool spaced=false;     //! Help flag for spaced messages. 
  
  string message;        //! A warning or help message.

  
  while(read_ahead){

    bool err_checksum=false;  //! Checksum error flag.
    bool err_integrity=false; //! Integrity error flag.
    
    bool warning=false;       //! Warning flag.
    bool error=false;         //! Error flag.
    
    // Try to generate block
    try{
      block=tape_block::gen_from_fd(in_fd);
    }
    
    catch(tape_block::eof_legal_exception &e){
      read_pointer+=e.get_consumed();
      break; // Immediately leave read loop.
    }
    
    catch(tape_block::io_error_exception){
      if (in_fd){
 	fprintf(stderr,"Error: Could not read from \"%s\"!\n",
		cfg_infile.c_str());
      } else {
 	fprintf(stderr,"Error: Could not read from stdin!\n");
      }
      error=true;
      errcode=2;
      break; // Immediately leave read loop.
    }
    
    catch(tape_block::eof_illegal_exception &e){
      block=e.get_block();
      err_integrity=true;
      read_ahead=false;
      if (cfg_ignore_block_errors){
	message="Warning: Block integrity check failed!\n";
 	warning=true;
      } else {
	message="Error: Block integrity check failed!\n";
 	error=true;
 	errcode=3;
      }
    }
    
    catch(tape_block::checksum_error_exception &e){
      block=e.get_block();
      err_checksum=true;
      if (cfg_ignore_checksum_errors){
 	message="Warning: Block checksum wrong!\n";
 	warning=true;
      } else {
	message="Error: Block checksum wrong!\n";
 	error=true;
 	read_ahead=false;
 	errcode=4;
      }
    }
    
    // Now let's check for block type
    if ((!error)&&(!warning)&&!block->has_known_type()){
      if (cfg_ignore_unknown_block_errors){
	message="Warning: Unknown Block type!";
	warning=true;
      }else{
	message="Error: Unknown Block type!";
	error=true;
	read_ahead=false;
	errcode=5;
      }
    }
    
    // Count block.
    blocks_read++;
    tape.insert(tape.end(),block);
    block_start=read_pointer+block->get_discarded_bytes();
    block_end=block_start+block->get_raw_size()-1;
    read_pointer=block_end+1;

    FILE * fp=stdwarn;
    if (error) fp=stderr;
         
    if (cfg_verbose||error||warning){
      if (!spaced) fprintf(fp,"\n");
      spaced=false;
      fprintf(fp,"Block No.%03i:  Start:0x%04x  End:0x%04x  Size:0x%02x\n",
	      blocks_read-1,
	      block_start,
	      block_end,
	      block->get_raw_size());
    }
    
    if (error)   fprintf(stderr,message.c_str());
    if (warning) fprintf(stdwarn,message.c_str());
        
    if(error||warning){
      dump_vector(block->get_description());
    } else {
      if(cfg_list_contents){
	FILE * tmp_fp=fdopen(out_fd,"w");
	dump_vector_fp(block->get_description(),tmp_fp);
	if (!error&&!warning) spaced=false;
      }
    }

    if (error||warning||cfg_verbose){
      fprintf(fp,"\n");
      spaced=true;
    }
    if (error) errors++;
    if (warning) warnings++;
  } // while....
  if (cfg_verbose){
    close(in_fd);
    fprintf(stderr,"Reading finished.\n");
    fprintf(stderr,"Bytes read:%i, Blocks read:%i\n",read_pointer,blocks_read);
    }
} // read_tape()


/******************************************************************************/
/*!
 *\brief Do integrity test and object or block dumps.
 */
void process_tape(){
  if (cfg_verbose) fprintf(stdwarn,"\nProcessing Data.\n");
  
  bool in_object=false;
  char filename[100];
  char filename_numbered[100];
  string objname;
  int unknown_count=-1;
  int fd=-1, fd_numbered=-1;
  int obj_no=0;
  int obj_start_block;
  
  for (unsigned int i=0; i<tape.size();i++){
    tape_block * block=tape[i];

      if (block->get_type()==tape_block::TBT_EOT){
	objname="EOT";
	if (in_object){
	  if (cfg_ignore_object_integrity_errors){
	    fprintf(stdwarn,"Warning: Object integrity error!\
 (Object no %i, Block %i unexpected)\n",obj_no,i);
	    warnings++;
	  } else {
	    fprintf(stderr,"Error: Object integrity error!\
 (Object no %i, Block %i unexpected)\n",obj_no,i);
	    errors++;
	    errcode=6;
	    return;
	  }
	}
      }
    if (!in_object){ // object begin
      
      obj_no++;
      obj_start_block=i;
      
      objname="UNKNOWN";
      unknown_count++;
      
      vector<string>names=block->get_exported_symbols();
      for (unsigned int a=0; a<names.size();a++){
	objname=names[0];
	if (objname!="      "){
	  objname=objname.substr(0,objname.find_last_not_of(" ")+1);
	  unknown_count--;
	  break;
	}
      }
           
      if (block->get_type()==tape_block::TBT_EOT){
	objname="EOT";
      }
      
      // Open file for split objects
      if (cfg_split_objects && (block->get_type()!=tape_block::TBT_EOT)){
	if (objname=="UNKNOWN")snprintf(filename,99,"UNKNOWN%02i",
					unknown_count);
	else snprintf(filename,99,"%s",objname.c_str());
	if (fd>-1) close (fd);
	if (cfg_verbose) fprintf(stdwarn,"Writing file: %s\n",filename);
	fd=open(filename,O_WRONLY|O_CREAT|O_TRUNC,0666);
	if (fd<0){
	  fprintf(stderr,"Error: could not open file \"%s\" for writing!\n",
		  filename);
	  errors++;
	  errcode=1;
	  return;
	}
      }

      // Open file for split objects numbered
      snprintf(filename_numbered,99,"%03i0-%s",obj_no,objname.c_str());
      if (cfg_split_objects_numbered){
	close (fd_numbered);
	if (cfg_verbose) fprintf(stdwarn,"Writing file: %s\n",filename_numbered);
	fd_numbered=open(filename_numbered,O_WRONLY|O_CREAT|O_TRUNC,0666);
	if (fd_numbered<0){
	  fprintf(stderr,"Error: could not open file \"%s\" for writing!\n",
		  filename_numbered);
	  errors++;
	  errcode=1;
	  return;
	}
      }
      in_object=true;
    } // object begin
    
    // Output block data
    if (cfg_split_objects){
      try{
	if (block->get_type()!=tape_block::TBT_EOT) // Don't want EOT here
	  block->dump_to_fd(fd);
      }
      catch (tape_block::io_error_exception e){
	fprintf(stderr,"Error: could write to file \"%s\"!\n",
		filename);
	errors++;
	errcode=1;
	return;
      }
    } // if (cfg_split_objects)

    // Output block data
    if (cfg_split_objects_numbered){
      try{
	block->dump_to_fd(fd_numbered);
      }
      catch (tape_block::io_error_exception e){
	fprintf(stderr,"Error: could write to file \"%s\"!\n",
		filename_numbered);
	  errors++;
	  errcode=1;
	  return;
      }
    } // if (cfg_split_objects_numbered)

    // Output individual block file if desired
    if (cfg_split_blocks){
      char fname[100];
      snprintf(fname,99,"%03i0-%s-%03i.block",obj_no,objname.c_str(),
	       i-obj_start_block);
      if (cfg_verbose) fprintf(stdwarn,"Writing file: %s\n",fname);
      int fd_block=open(fname,O_WRONLY|O_TRUNC|O_CREAT,0666);
      if (fd_block<0){
	  fprintf(stderr,"Error: could not open file \"%s\" for writing!\n",
		  fname);
	  errors++;
	  errcode=1;
	  close(fd);
	  close(fd_numbered);
	  return;
      }
      try{
	block->dump_to_fd(fd_block);
      }
      catch (tape_block::io_error_exception e){
	fprintf(stderr,"Error: could write to file \"%s\"!\n",
		fname);
	errors++;
	errcode=1;
	close(fd);
	close(fd_numbered);
	return;
      }
      close(fd_block);
    }
    
    if (block->is_endblock()||(block->get_type()==tape_block::TBT_EOT)) {
      in_object=false; 
      close(fd);
      close(fd_numbered);
    }
  } // for (...)
  
  if (in_object){
    if (cfg_ignore_object_integrity_errors){
      fprintf(stdwarn,"Warning: Object integrity error! Last object incomplete!\n");
      warnings++;
    } else {
      fprintf(stdwarn,"Error: Object integrity error! Last Object incomplete!\n");
      errors++;
      errcode=6;
      if (fd!=-1) close(fd);
      if (fd_numbered!=-1) close(fd_numbered);
      return;
    }
  }
} // process_tape()

/******************************************************************************/
/*!
 *\brief Everything that has to do with symbol listing.
 */
void process_symbols(){
  vector<string>exported;
  vector<string>called;
  vector <string>unsatisfied;

  if (cfg_verbose) fprintf(stdwarn,"\nProcessing Symbols.\n");  

  for (unsigned int i=0; i<tape.size();i++){
    merge_vector_unique(exported,tape[i]->get_exported_symbols());
    merge_vector_unique(called,tape[i]->get_called_symbols());
  }
  
  for (unsigned int icalled=0;icalled<called.size();icalled++){
    bool found=false;
    for (unsigned int iexported=0;iexported<exported.size();iexported++){
      if (exported[iexported].compare(called[icalled])==0){
	found=true;
	break;
      }
    }
    if (!found) {
      bool present=false;
      for (unsigned int i=0;i<unsatisfied.size();i++){
	if (unsatisfied[i].compare(called[icalled])==0){
	  present=true;
	  break;
	}
      }
      if (!present) unsatisfied.insert(unsatisfied.end(),called[icalled]);
    }
  }
  
  FILE * outp=fdopen(out_fd,"w");

  if (cfg_output_called){
    dump_vector_fp(called,outp);
  }

  if (cfg_output_exported){
    dump_vector_fp(exported,outp);
  }

  if (cfg_output_unsatisfied){
    dump_vector_fp(unsatisfied,outp);
  }

} // process_symbols()

/******************************************************************************/
/*!
 *\brief The main routine.
 *
 */
int main(int argc, char ** args){

  // Do all the configuration stuff
  do_config(argc,args);

  // Output a version message if desired
  if (cfg_version){
    fprintf(stderr, ID_STRING, VERSION, BUILD_DATE, BUILD_STAMP);
    exit(0);
  }
  
  // Assign warning output according to configuration
  if (cfg_quiet) stdwarn=fopen("/dev/null","w");
  else stdwarn=stderr;
  
  read_tape(); // Process input to completion.
  exit_on_error();
  
  process_tape();
  exit_on_error();

  process_symbols();
  exit_on_error();
    
  if (warnings>0){
    fprintf(stdwarn,"Warnings:%i\n",warnings);
    return 99;
  }
  if (cfg_verbose) fprintf(stdwarn,"\nSuccess.\n");
  return 0;

  /*
   * All over this program, no memory is freed. This is not necessary because
   * everything is allocated once and that's it.
   * The classes support proper freeing of their internal buffers.
   */

} // main()

/******************************************************************************/