Let blob pages appear at the place they're referenced

1 files changed, 29 insertions, 28 deletions

diff --git a/src/export/extract_version_1.c b/src/export/extract_version_1.c
index 8daec76..0d45a7d 100644
--- a/src/export/extract_version_1.c
+++ b/src/export/extract_version_1.c
@@ -29,52 +29,53 @@ 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 )
+void act_on_record( uint8_t *file, 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;
+  uint8_t outbuf[8192], *out_dest = outbuf, *record;
+  int     num_entries;
 
-  /* printf( "    Found record with %d entries at %04x.\n", num_entries, record_off ); */
   if( record_off > 0x1fff )
-    return; /* Ignore deleted entries */
-
-  if( !flag )
-  { /* Flags says whether page has a prefix row */
-    record += 2;
-    if( *(uint16_t*)record )
-    {
-      decode_7bit_string( page + *(uint16_t*)record, outbuf );
-      out_dest += strlen( (char*)outbuf );
+  {
+    /* Here comes the reference to a blob page */
+    int page_nr  = *(uint16_t*)(page + ( record_off ^ 0xffff ) + 1);
+    page         = file + 0x800 + 0x2000 * page_nr;
+    num_entries  = *(uint16_t*)page;
+    record       = page + 0x6;
+  }
+  else
+  {
+    record       = page + record_off;
+    num_entries  = *(uint16_t*)record;
+    if( !flag )
+    { /* Flags says whether page has a prefix row */
+      record += 2;
+      if( *(uint16_t*)record )
+      {
+        decode_7bit_string( page + *(uint16_t*)record, outbuf );
+        out_dest += strlen( (char*)outbuf );
+      }
     }
+    record += 2;
   }
 
-  decode_7bit_string( record + 2, out_dest );
+  decode_7bit_string( record, out_dest );
   /* XXX TODO: Split record in 12 chunks each, mark continuation, if num_entries > 1 */
   puts( (char*)outbuf );
 }
 
 /* Page is always 0x2000 */
-void act_on_page( uint8_t *page, int page_nr )
+void act_on_page( uint8_t *file, 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 --------" ); */
+  /* printf( "  Acting on page %04d with flag %d and %04d records.\n", page_nr, flag, num_records ); */
 
-    decode_7bit_string( page + 0x6, outbuf );
-    /* XXX TODO: Split record in 12 chunks each, mark continuation */
-    puts( (char *)outbuf );
-  } else
+  if( !blob_len ) /* Handle blob, pages when they're referenced */
     for( record = 0; record < num_records; ++record )
-      act_on_record( flag, page + 0xe, recs[record] );
+      act_on_record( file, flag, page + 0xe, recs[record] );
 }
 
 void act_on_file( uint8_t *file, size_t len )
@@ -89,7 +90,7 @@ void act_on_file( uint8_t *file, size_t len )
   /* 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 );
+    act_on_page( file, file + 0x800 + 0x2000 * page, page );
 }
 
 int main( int args, char **argv )