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path: root/src/export/split_version_2.c
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#include <stdlib.h>
#include <stdint.h>
#include <ctype.h>
#include <fcntl.h>
#include <unistd.h>

#include "mystdlib.h"

/*

01_unknown => 01_Flags
16_unknown => 02_Nachname
07_unknown => 03_Vorname
11_unknown => 04_Zusaetze
  13_unknown => 05_Zusaetze     (sw)
  14_unknown => 05_Zusaetze     (no)
12_unknown => 06_Ortszusatz
08_unknown => 07_Strasse
10_unknown => 08_Hausnummer
  14_unknown => 09_Verweise     (sw)
  13_unknown => 09_Verweise     (no)
03_unknown => 10_Postleitzahl
09_unknown => 11_Ort
  05_unknown => 12_Vorwahl      (sw)
  06_unknown => 12_Vorwahl      (no)
  06_unknown => 13_Rufnummer    (sw)
  05_unknown => 13_Rufnummer    (no)

       no    s     w
4003   01    01    01
4007   -     -     5:"0"
4009   -     *:"0" -
400B   -     -     6:"0"
400C   -     !!!   -      => in 1996_Q1: 04_Namenszusatz
400E   11    06    -
400F   05    05    13
4010   -     -     06
4011   16    -     16
4012   06    16    05
4013   13    08    08
4014   12    10    10
4015   08    11    03
4016   10    03    09
4017   03    09    12
4018   09    13    -
401A   -     12    11
401B   07    07    07
401C   14    14    14

*/

enum { g_outfiles = 16 };
static enum { CD_NO = 0, CD_S = 1, CD_W = 2 } g_cd;
static int g_outfilemap[3][29] = {
  {-1,-1,-1, 0,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,10, 5,-1,15, 4,12,11, 7, 9, 1, 8,-1,-1, 6,13 },
  {-1,-1,-1, 0,-1,-1,-1,-1,-1,-1,-1,-1,10,-1, 5, 4,-1,-1,15, 7, 9,10, 1, 8,12,-1,11, 6,13 },
  {-1,-1,-1, 0,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,12, 5,15, 4, 7, 9, 1, 8,11,-1,-1,10, 6,13 }
};

static struct {
  int      outfiles[g_outfiles];
  uint8_t *outbuf  [g_outfiles];
  size_t   outfill [g_outfiles];
} g_state;

static uint8_t cp437_to_iso8859_1_table[] = {
  0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
  0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
  0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f,
  0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f,
  0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f,
  0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f,
  0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f,
  0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f,
  0xc7, 0xfc, 0xe9, 0xe2, 0xe4, 0xe0, 0xe5, 0xe7, 0xea, 0xeb, 0xe8, 0xef, 0xee, 0xec, 0xc4, 0xc5,
  0xc9, 0xe6, 0xc6, 0xf4, 0xf6, 0xf2, 0xfb, 0xf9, 0xff, 0xd6, 0xdc, 0xa2, 0xa3, 0xa5, 0x2e, 0x2e,
  0xe1, 0xed, 0xf3, 0xfa, 0xf1, 0xd1, 0xaa, 0xba, 0xbf, 0x2e, 0xac, 0xbd, 0xbc, 0xa1, 0xab, 0xbb,
  0x2e, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e,
  0x2e, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e,
  0x2e, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e,
  0x2e, 0xdf, 0x2e, 0x2e, 0x2e, 0x2e, 0xb5, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e,
  0x2e, 0xb1, 0x2e, 0x2e, 0x2e, 0x2e, 0xf7, 0x2e, 0xb0, 0x2e, 0xb7, 0x2e, 0x2e, 0xb2, 0x2e, 0xa0
};

static void dump_string( uint8_t *start, size_t len, int file ) {
  while( len-- && *start )
    g_state.outbuf[file][g_state.outfill[file]++] = cp437_to_iso8859_1_table[*start++];
}

static void dump_field( uint8_t **end, int file ) {
  uint8_t len = (*end)[-1];
  dump_string( *end -= len + 1, len, file);
}

static void finish_record( ) {
  int file;
  for( file=0; file<g_outfiles; ++file )
    g_state.outbuf[file][g_state.outfill[file]++] = '\n';
}

static uint16_t load_word( uint8_t *record, uint16_t base, int offset ) {
  int dword_offset = offset >> 1;

  /* If a word(subflag, t_off) would span over the end of a 0x4000
     byte page, it is placed on the next page. All other words are
     shifted backwards, as well. */
  if( base + 4 + 4 * dword_offset > 0x1ffc )
    record += 3 & ( 4 - ( base & 3 ) );

  return ((uint16_t*)record)[offset + 2];
}

static void dump_primary( uint8_t *end, uint32_t flags ) {
  /* First dump type of record (should be 1)
     dump_string( end, 1, 0 );
     actually the entry is dumped in the caller when we know
     if this is the first line of a continuation.
  */

  /* Dump first 5 chars of zip, they're always there. The extra
     zip overrides if flag is set */
  end -= 5;
  if( !(flags & 0x0080) )
    dump_string( end, 5, 1 );

  /* Dump first 5 chars of prefix, they're always here in s and w */
  if( g_cd != CD_NO )
    dump_string( end -= 5, 5, 2 );

  /* There is an override version of the zip code present, if this bit is set */
  if( flags & 0x0080 ) dump_string( end -= 5, 5, 1 );

  /* There is an unclear X present, if this bit is set */
  if( flags & 0x0040 ) dump_string( end -= 1, 1, 3 );

  if( flags & 0x0020 ) {
    if( g_cd != CD_NO )
      dump_string( end -= 5, 5, 4 );
    else
      dump_field( &end, 5 );
  }

  if( flags & 0x0010 ) dump_field( &end, g_cd == CD_NO ? 4 : 5 );
  if( flags & 0x0008 ) dump_field( &end, 6 );
  if( flags & 0x0004 ) dump_field( &end, 7 );
  if( flags & 0x0002 ) dump_field( &end, 8 );
  if( flags & 0x0001 ) dump_field( &end, 9 );
  if( flags & 0x8000 ) dump_field( &end, 10 );
  if( flags & 0x4000 ) dump_field( &end, 11 );
  if( flags & 0x2000 ) dump_field( &end, g_cd == CD_NO ? 12 : 13 );
  if( flags & 0x1000 ) dump_field( &end, g_cd == CD_NO ? 13 : 12 );

  dump_field( &end, 14 );

  /* Dump static prefix, it's always here in no */
  if( g_cd == CD_NO )
    dump_field( &end, 2 );
  dump_field( &end, 15 );
}

static void act_on_record( uint8_t * rec, uint16_t base ) {
  uint16_t entries   = ((uint16_t*)rec)[0];
  uint16_t flagbytes = ((uint16_t*)rec)[1];
  uint32_t flags = 0;
  uint8_t  *end = rec;
  int i;

  while(flagbytes--) flags = (flags<<8) | *--end;

  //printf( "-------- %03d: %06X\n", entries, flags );
  for (i = 0; i < entries; i++ ) {
    uint16_t subflag   = load_word( rec, base, 2*i );
    uint16_t t_off     = load_word( rec, base, 2*i+1 );
    uint8_t *rec_start = end - t_off;

    if (i == 0) {
      dump_string( entries > 1 ? (uint8_t*)"01" : (uint8_t*)"00", 2, 0 );
      dump_primary( rec_start, flags );
    } else {
      uint8_t * rec_end = end - ( ( i+1 == entries ) ? 0 : load_word( rec, base, 2*i+3 ) );
      int file = g_outfilemap[g_cd][subflag&0x1F];
      if( subflag == 0x4003 ) {
        finish_record();
        dump_string( (uint8_t*)"02", 2, 0 );
      } else if( file >= 0 )
        dump_string( rec_start, rec_end - rec_start, g_outfilemap[g_cd][subflag&0x1F] );
    }
  }
  finish_record();
}

int main( int args, char **argv ) {
  char filename[1024];
  MAP data, index;
  uint32_t * indoff;
  ssize_t temp = 0;
  size_t limit;
  int i;

  if( args != 3 ) {
    fprintf( stderr, "Syntax: %s <dumpfile> <indexfile>\n", argv[0] );
    exit(1);
  }

  for( i=0; i<g_outfiles; ++i )
  {
    sprintf( filename, "%02d_unknown", i+1 );
    g_state.outfiles[i] = open( filename, O_WRONLY | O_APPEND | O_CREAT, 0644 );
    g_state.outbuf[i]   = malloc(8192*4096);
    g_state.outfill[i]  = 0;
  }

  data  = map_file( argv[1], 1 );
  index = map_file( argv[2], 1 );

  if( !data || !index )
    exit( 1 );

  switch( data->addr[0x228] ) {
    case 0x07: g_cd = CD_NO; break;
    case 0x0d: g_cd = CD_S;  break;
    case 0x0e: g_cd = CD_W;  break;
    default: fprintf( stderr, "Unknown CD version\n" );
      exit(1);
  }

  /* Each entry in outfile[0] is flag + \n, i.e. 3 bytes
     We want to flush at ever percent progress */
  limit = 3 * ( ( index->size / 4 ) / 100 );

  for( indoff = (uint32_t*)(index->addr + 8);
       indoff < (uint32_t*)(index->addr + index->size) && *indoff;
       indoff++ ) {
//        printf( "\nActing on record at off: %08X\n", *indoff );
        act_on_record( data->addr + *indoff, *indoff & 0x1fff );

    /* Write out results */
    if( g_state.outfill[0] > limit )
      for( i=0; i<g_outfiles; ++i ) {
        if( g_state.outfill[i] > 1024*1024*6 ) printf( "Large: %zd\n", g_state.outfill[i] );
        temp += write( g_state.outfiles[i], g_state.outbuf[i], g_state.outfill[i] );
        g_state.outfill[i]  = 0;
      }
  }

  for( i=0; i<g_outfiles; ++i ) {
    temp += write( g_state.outfiles[i], g_state.outbuf[i], g_state.outfill[i] );
    close( g_state.outfiles[i] );
  }
  unmap_file( &data );
  unmap_file( &index );

  if( !temp )
    exit(1);
  return 0;
}