From 6a83373eb86eec673be2d24fe840a9bce97fcaaa Mon Sep 17 00:00:00 2001
From: Daniel Baumann <mail@daniel-baumann.ch>
Date: Sun, 8 Nov 2015 05:18:52 +0100
Subject: Adding upstream version 0.9~rc1.

Signed-off-by: Daniel Baumann <mail@daniel-baumann.ch>
---
 zdiff.cc | 42 +++++++++++++++---------------------------
 1 file changed, 15 insertions(+), 27 deletions(-)

(limited to 'zdiff.cc')

diff --git a/zdiff.cc b/zdiff.cc
index d01f492..b9c4c77 100644
--- a/zdiff.cc
+++ b/zdiff.cc
@@ -122,9 +122,8 @@ void show_help() throw()
 int open_instream( const std::string & input_filename ) throw()
   {
   int infd = open( input_filename.c_str(), O_RDONLY | o_binary );
-  if( infd < 0 && verbosity >= 0 )
-    std::fprintf( stderr, "%s: Can't open input file `%s': %s.\n",
-                  util_name, input_filename.c_str(), std::strerror( errno ) );
+  if( infd < 0 )
+    show_error2( "Can't open input file", input_filename.c_str() );
   return infd;
   }
 
@@ -169,7 +168,7 @@ const char * my_basename( const char * filename ) throw()
   }
 
 
-void remove_fifos() throw()
+extern "C" void remove_fifos() throw()
   {
   if( fifonames[0].size() )
     { std::remove( fifonames[0].c_str() ); fifonames[0].clear(); }
@@ -209,9 +208,7 @@ bool set_fifonames( const std::string filenames[2] )
         if( mkfifo( fifonames[i].c_str(), S_IRUSR | S_IWUSR ) == 0 )
           continue;
         }
-      if( verbosity >= 0 )
-        std::fprintf( stderr, "%s: Can't create FIFO `%s': %s.\n",
-                      util_name, fifonames[i].c_str(), std::strerror( errno ) );
+      show_error2( "Can't create FIFO", fifonames[i].c_str() );
       return false;
       }
   return true;
@@ -251,30 +248,23 @@ bool set_data_feeder( const std::string & fifoname, const int infd,
             close( fda[0] ) == 0 && close( fda[1] ) == 0 &&
             close( outfd ) == 0 )
           execlp( file_type.c_str(), file_type.c_str(), "-cdfq", (char *)0 );
-        if( verbosity >= 0 )
-          std::fprintf( stderr, "%s: Can't exec `%s': %s.\n",
-                        util_name, file_type.c_str(), std::strerror( errno ) );
+        show_exec_error( file_type.c_str() );
         _exit( 2 );
         }
       if( pid2 < 0 )
-        {
-        if( verbosity >= 0 )
-          std::fprintf( stderr, "%s: Can't fork `%s': %s.\n",
-                        util_name, file_type.c_str(), std::strerror( errno ) );
-        _exit( 2 );
-        }
+        { show_fork_error( file_type.c_str() ); _exit( 2 ); }
 
       if( close( fda[0] ) != 0 ||
           !feed_data( infd, fda[1], magic_data, magic_size ) )
         _exit( 2 );
       if( close( fda[1] ) != 0 )
-        { show_error( "Can't close output of feeder", errno ); _exit( 2 ); }
+        { show_close_error( "data feeder" ); _exit( 2 ); }
       _exit( wait_for_child( pid2, file_type.c_str() ) );
       }
 					// parent
     close( fda[0] ); close( fda[1] );
     if( pid < 0 )
-      { show_error( "Can't fork decompressor feeder", errno ); return false; }
+      { show_fork_error( "decompressor feeder" ); return false; }
     *pidp = pid;
     }
   else					// not compressed
@@ -293,12 +283,12 @@ bool set_data_feeder( const std::string & fifoname, const int infd,
       if( !feed_data( infd, outfd, magic_data, magic_size ) )
         _exit( 2 );
       if( close( outfd ) != 0 )
-        { show_error( "Can't close output of feeder", errno ); _exit( 2 ); }
+        { show_close_error( "data feeder" ); _exit( 2 ); }
       _exit( 0 );
       }
 					// parent
     if( pid < 0 )
-      { show_error( "Can't fork data feeder", errno ); return false; }
+      { show_fork_error( "data feeder" ); return false; }
     *pidp = pid;
     }
   return true;
@@ -431,7 +421,7 @@ int main( const int argc, const char * const argv[] )
   if( diff_pid == 0 )			// child (diff)
     {
     const char ** const argv = new const char *[diff_args.size()+5];
-    argv[0] = "diff";
+    argv[0] = DIFF;
     for( unsigned int i = 0; i < diff_args.size(); ++i )
       argv[i+1] = diff_args[i];
     argv[diff_args.size()+1] = "--";
@@ -439,19 +429,19 @@ int main( const int argc, const char * const argv[] )
     argv[diff_args.size()+3] = fifonames[1].c_str();
     argv[diff_args.size()+4] = 0;
     execvp( argv[0], (char **)argv );
-    show_error( "Can't exec `diff'." );
+    show_exec_error( DIFF );
     _exit( 2 );
     }
 					// parent
   if( diff_pid < 0 )
-    { show_error( "Can't fork `diff'", errno ); return 2; }
+    { show_fork_error( DIFF ); return 2; }
 
   pid_t pid[2];
   if( !set_data_feeder( fifonames[0], infd[0], &pid[0] ) ||
       !set_data_feeder( fifonames[1], infd[1], &pid[1] ) )
     return 2;
 
-  int retval = wait_for_child( diff_pid, "diff" );
+  int retval = wait_for_child( diff_pid, DIFF );
 
   if( retval != 0 )
     {
@@ -466,9 +456,7 @@ int main( const int argc, const char * const argv[] )
   for( int i = 0; i < 2; ++i )
     if( filenames[i] != "-" && close( infd[i] ) != 0 )
       {
-      if( verbosity >= 0 )
-        std::fprintf( stderr, "%s: Can't close input file `%s': %s.\n",
-                      util_name, filenames[i].c_str(), std::strerror( errno ) );
+      show_error2( "Can't close input file", filenames[i].c_str() );
       retval = 2;
       }
 
-- 
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