1 files changed, 120 insertions, 0 deletions

diff --git a/src/export/extract_version_1.c b/src/export/extract_version_1.c
new file mode 100644
index 0000000..be6aa1b
--- /dev/null
+++ b/src/export/extract_version_1.c
@@ -0,0 +1,120 @@
+#include <stdlib.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <string.h>
+#include "mystdlib.h"
+
+static char xlat_table[] = {
+  0x00, 0x09, 0x02, 0x03, 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, 0x5f,
+  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, 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, 0xe1, 0xed, 0xf3, 0xfa, 0xf1, 0xd1, 0xdf, 0x5b, 0x5c, 0x5d, 0x60
+};
+
+void decode_7bit_string( uint8_t const *source, uint8_t *dest )
+{
+  uint16_t acc = 0, acc_bits = 0;
+  while( 1 )
+  {
+    acc = acc*256+*(source++); ++acc_bits;
+again:
+    *(dest++) = xlat_table[ 0x7f & ( acc >> acc_bits ) ];
+    if( !dest[-1] ) return;
+    if( acc_bits == 7 ) { acc_bits = 0; goto again; }
+  }
+}
+int fromhex( uint8_t a ) { if(a >='0'&&a<='9')return a-'0';if(a>='a'&&a<='f') return 10+a-'a'; if(a>='A'&&a<='F') return 10+a-'A'; exit(1); }
+
+void act_on_record( int flag, uint8_t *page, uint16_t record_off )
+{
+  uint8_t * record = page + record_off;
+  uint8_t   outbuf[8192], * out_dest = outbuf;
+  int       num_entries = *(uint16_t*)record;
+
+  printf( "    Found record with %d entries at %04x.\n", num_entries, record_off );
+  if( record_off > 0x1fff ) {
+    printf( "NEG!!!" );
+    record_off ^= 0xffff;
+    record_off++;
+  }
+
+  if( !flag )
+  {
+    record += 2;
+    if( *(uint16_t*)record )
+    {
+      decode_7bit_string( page + *(uint16_t*)record, outbuf );
+      out_dest += strlen( (char*)outbuf );
+    }
+  }
+
+  /* ignore prefix for now */
+  decode_7bit_string( record + 2, out_dest );
+  puts( (char*)outbuf );
+}
+
+/* Page is always 0x2000 */
+void act_on_page( uint8_t *page, int page_nr )
+{
+  int record, flag  = page[0];
+  int blob_len      = *(uint16_t*)(page + 0x2);
+  int num_records   = *(uint16_t*)(page + 0x4);
+  uint16_t * recs   =  (uint16_t*)(page + 0xe);
+
+  printf( "  Acting on page %04d with flag %d and %04d records.\n", page_nr, flag, num_records );
+
+  if( blob_len )
+  {
+    uint8_t outbuf[8192];
+    printf( "-------- PAGE IS BLOB --------" );
+    decode_7bit_string( page + 0x6, outbuf );
+    puts( (char *)outbuf );
+  } else
+    for( record = 0; record < num_records; ++record )
+      act_on_record( flag, page + 0xe, recs[record] );
+}
+
+void act_on_file( uint8_t *file, size_t len )
+{
+  int page, num_pages = *(uint16_t*)(file+0x40);
+  int num_records     = *(uint32_t*)(file+0x42);
+  char *gasse         = (char *)file + 0x8e;
+  char *ort           = gasse + 1 + strlen(gasse);
+  char *zip           = ort   + 1 + strlen(ort);
+  char *vorwahl       = zip   + 1 + strlen(zip);
+
+  printf( "Working on a %04d page and %06d records file, city: %4s %-32s with prefix %s\n", num_pages, num_records, zip, ort, vorwahl );
+
+  for( page = 0; page < num_pages; ++page )
+    act_on_page( file + 0x800 + 0x2000 * page, page );
+}
+
+int main( int args, char **argv )
+{
+  MAP f = map_file( argv[1], 1 );
+
+  act_on_file( f->addr, f->size );
+
+  unmap_file( &f );
+  return 0;
+}
+
+/*
+int main()
+{
+  uint8_t chars[2048], in[1024], out[2048];
+  int i = 0;
+  fgets( chars, sizeof(chars), stdin );
+
+  while( chars[i*2] > 32 && chars[i*2+1] > 32 )
+  {
+    in[i] = ( fromhex( chars[i*2] ) << 4 ) + fromhex( chars[i*2+1] );
+    i++;
+  }
+  decode_7bit_string( in, i, out );
+  printf( "%s\n", out );
+} */