From 9e1481f1341f12a41b988d6dcb63e8256d1e54a3 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <mail@daniel-baumann.ch>
Date: Sat, 7 Nov 2015 11:20:52 +0100
Subject: Adding upstream version 1.14~rc1.

Signed-off-by: Daniel Baumann <mail@daniel-baumann.ch>
---
 repair.cc | 44 ++++++++++++++++++++++++++++----------------
 1 file changed, 28 insertions(+), 16 deletions(-)

(limited to 'repair.cc')

diff --git a/repair.cc b/repair.cc
index b065814..e9cef61 100644
--- a/repair.cc
+++ b/repair.cc
@@ -1,5 +1,5 @@
 /*  Lziprecover - Data recovery tool for lzipped files
-    Copyright (C) 2009, 2010, 2011, 2012 Antonio Diaz Diaz.
+    Copyright (C) 2009, 2010, 2011, 2012, 2013 Antonio Diaz Diaz.
 
     This program is free software: you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
@@ -30,8 +30,27 @@
 #include "lzip.h"
 
 
+int seek_read( const int fd, uint8_t * const buf, const int size,
+               const long long pos )
+  {
+  if( lseek( fd, pos, SEEK_SET ) == pos )
+    return readblock( fd, buf, size );
+  return 0;
+  }
+
+
+int seek_write( const int fd, const uint8_t * const buf, const int size,
+                const long long pos )
+  {
+  if( lseek( fd, pos, SEEK_SET ) == pos )
+    return writeblock( fd, buf, size );
+  return 0;
+  }
+
+
 int repair_file( const std::string & input_filename,
-                 const std::string & output_filename, const bool force )
+                 const std::string & output_filename, const int verbosity,
+                 const bool force )
   {
   struct stat in_stats;
   const int infd = open_instream( input_filename, &in_stats, true, true );
@@ -41,7 +60,7 @@ int repair_file( const std::string & input_filename,
     { show_error( "Input file is not seekable", errno ); return 1; }
   if( isize < min_member_size )
     { show_error( "Input file is too short." ); return 2; }
-  if( !verify_single_member( infd, isize ) ) return 2;
+  if( !verify_single_member( infd, isize, verbosity ) ) return 2;
   if( lseek( infd, 0, SEEK_SET ) < 0 )
     { show_error( "Seek error in input file", errno ); return 1; }
 
@@ -67,35 +86,28 @@ int repair_file( const std::string & input_filename,
   const long long min_pos =
     std::max( (long long)File_header::size, failure_pos - 1000 );
   bool done = false;
-  for( long long pos = failure_pos; pos >= min_pos; --pos )
+  for( long long pos = failure_pos; pos >= min_pos && !done ; --pos )
     {
     if( verbosity >= 1 )
       {
-      std::printf( "Trying position %lld \r", pos );
+      std::printf( "Trying position %llu \r", pos );
       std::fflush( stdout );
       }
     uint8_t byte;
-    if( lseek( outfd, pos, SEEK_SET ) < 0 ||
-        readblock( outfd, &byte, 1 ) != 1 )
+    if( seek_read( outfd, &byte, 1, pos ) != 1 )
       { show_error( "Error reading output file", errno );
         cleanup_and_fail( output_filename, outfd, 1 ); }
-    for( int i = 0; i < 255; ++i )
+    for( int i = 0; i < 256; ++i )
       {
       ++byte;
-      if( lseek( outfd, pos, SEEK_SET ) < 0 ||
-          writeblock( outfd, &byte, 1 ) != 1 ||
+      if( seek_write( outfd, &byte, 1, pos ) != 1 ||
           lseek( outfd, 0, SEEK_SET ) < 0 )
         { show_error( "Error writing output file", errno );
           cleanup_and_fail( output_filename, outfd, 1 ); }
+      if( i == 255 ) break;
       if( try_decompress( outfd, isize ) )
         { done = true; break; }
       }
-    if( done ) break;
-    ++byte;
-    if( lseek( outfd, pos, SEEK_SET ) < 0 ||
-        writeblock( outfd, &byte, 1 ) != 1 )
-      { show_error( "Error writing output file", errno );
-        cleanup_and_fail( output_filename, outfd, 1 ); }
     }
   if( verbosity >= 1 ) std::printf( "\n" );
 
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