From 64c85dfc1d3b546dd4b5f84168e9256817f3a741 Mon Sep 17 00:00:00 2001
From: Dirk Engling <erdgeist@erdgeist.org>
Date: Thu, 20 Feb 2014 02:46:41 +0100
Subject: clean up source directory

---
 src/postprocess/dumppointers2.c | 127 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 127 insertions(+)
 create mode 100644 src/postprocess/dumppointers2.c

(limited to 'src/postprocess/dumppointers2.c')

diff --git a/src/postprocess/dumppointers2.c b/src/postprocess/dumppointers2.c
new file mode 100644
index 0000000..80a4b61
--- /dev/null
+++ b/src/postprocess/dumppointers2.c
@@ -0,0 +1,127 @@
+#include <stdio.h>
+#include <unistd.h>
+#include <fcntl.h>
+
+#define  BUFSIZE 0x1000000
+#define  BUFLOW  0x400
+static          int  infile = -1;
+static unsigned char  nblock[ BUFSIZE + 16 ];
+static unsigned char*inblock = nblock + 16;
+static unsigned long inblockoffs = 0;
+
+static unsigned long infilesize = 0;
+static unsigned long infileoffs = 0;
+static unsigned char to_lower[];
+static unsigned char run = 1;
+
+static void buffer_lowwatermark( void )
+{
+  int i;
+  if( infilesize - infileoffs < BUFSIZE )
+    return;
+  memmove( inblock, inblock + inblockoffs, BUFSIZE - inblockoffs );
+  read( infile, inblock + (BUFSIZE - inblockoffs), inblockoffs);
+  for ( i = BUFSIZE - inblockoffs; i<BUFSIZE; ++i) inblock[i] = to_lower[inblock[i]];
+  infileoffs += inblockoffs;
+  inblockoffs = 0;
+}
+
+static void buffer_init( void )
+{
+  int i;
+  read( infile, inblock, BUFSIZE);
+  for ( i = 0; i<BUFSIZE; ++i) inblock[i] = to_lower[inblock[i]];
+}
+
+static unsigned char to_lower[] = {
+0x00, 0x01, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x01, 0x00, 0x02, 0x02, 0x02, 0x02, 0x02,
+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, 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, 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,
+0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x8A, 0x8B, 0x8C, 0x8D, 0x8E, 0x8F,
+0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x9A, 0x9B, 0x9C, 0x9D, 0x9E, 0x9F,
+0xA0, 0xA1, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6, 0xA7, 0xA8, 0xA9, 0xAA, 0xAB, 0xAC, 0xAD, 0xAE, 0xAF,
+0xB0, 0xB1, 0xB2, 0xB3, 0xB4, 0xB5, 0xB6, 0xB7, 0xB8, 0xB9, 0xBA, 0xBB, 0xBC, 0xBD, 0xBE, 0xBF,
+0xC0, 0xC1, 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7, 0xC8, 0xC9, 0xCA, 0xCB, 0xCC, 0xCD, 0xCE, 0xCF,
+0xD0, 0xD1, 0xD2, 0xD3, 0xD4, 0xD5, 0xF6, 0xD7, 0xD8, 0xD9, 0xDA, 0xDB, 0xFC, 0xDD, 0xDE, 0xDF,
+0xE0, 0xE1, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7, 0xE8, 0xE9, 0xEA, 0xEB, 0xEC, 0xED, 0xEE, 0xEF,
+0xF0, 0xF1, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7, 0xF8, 0xF9, 0xFA, 0xFB, 0xFC, 0xFD, 0xFE, 0xFF
+};
+
+int makefile( int currrow, unsigned char a, unsigned char b)
+{
+  int fid; char fn[16]; sprintf( fn, "%02d/%2X%2X", currrow, a, b);
+  fid = open( fn, O_RDWR | O_CREAT, 0644 );
+  if( fid == -1 ) {
+    fprintf( stderr, "Unable to open: %s\n", fn );
+    exit( 1 );
+  }
+  return fid;
+}
+
+int main( int args, char **argv )
+{
+  int currrow = 1, inrow = 0, nowfd, use, mycount = 0;
+  unsigned long row;
+  static int fd[0x10000][17];
+
+  memset( fd, 0, sizeof(fd));
+  setvbuf( stdout, NULL, _IONBF, 0);
+
+  if( (args != 3) || ((row = atol(argv[1]))==0))
+  {
+    fprintf( stderr, "syntax: %s row toindex\n", *argv );
+    exit( 1 );
+  }
+
+  if( ( infile = open( argv[2], O_RDONLY ) ) == -1 )
+  {
+    fprintf( stderr, "Could not open file %s.\n", argv[2] );
+    exit( 1 );
+  }
+  getfilesize( infile, &infilesize );
+
+  buffer_init();
+
+  row = 1 << row;
+  use = row & 1;
+  while( 1 )
+  {
+    unsigned char a, b;
+    switch( a = inblock[inblockoffs++] )
+    {
+      case   0 :
+        currrow = 0;
+        if( inblockoffs > BUFSIZE - BUFLOW )
+          buffer_lowwatermark();
+        if( infilesize <= infileoffs + inblockoffs)
+          return 0;
+        if( !(mycount++ & 255) )
+          printf( "%cSo far: %010.6f%% (%010lu / %010lu)", 13, 100.00 * (double)(infileoffs+inblockoffs) / (double)infilesize, infileoffs+inblockoffs, infilesize );
+        // Fall through
+      case   1 :
+        use = (1<<currrow) & row; currrow++; inrow = 0;
+        break;
+      default  :
+        if( use && ( (b = inblock[inblockoffs] ) > 1 ) )
+        {
+          if( !fd[ b | (a*256) ][currrow] )
+            nowfd = fd[ b | (a*256) ][currrow] = makefile( currrow, a, b);
+          else
+            nowfd = fd[ b | (a*256) ][currrow];
+
+          *(unsigned long*)(inblock+inblockoffs-4) = infileoffs + inblockoffs - 1 - inrow;
+                            inblock[inblockoffs]   = inrow++;
+          write( nowfd,     inblock+inblockoffs-4, 16);
+                            inblock[inblockoffs]   = b;
+          break;
+        }
+    }
+  }
+
+  return 0;
+}
-- 
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