1 files changed, 38 insertions, 15 deletions

diff --git a/zutils.cc b/zutils.cc
index 5451534..01a0152 100644
--- a/zutils.cc
+++ b/zutils.cc
@@ -119,32 +119,24 @@ bool set_data_feeder( int * const infdp, pid_t * const pidp )
             close( fda[0] ) == 0 && close( fda[1] ) == 0 &&
             close( fda2[0] ) == 0 && close( fda2[1] ) == 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 ||
           close( fda2[0] ) != 0 || close( fda2[1] ) != 0 ||
           !feed_data( old_infd, fda[1], magic_data, magic_size ) )
         _exit( 2 );
       if( close( fda[1] ) != 0 )
-        { show_error( "Can't close output of decompressor feeder", errno );
-          _exit( 2 ); }
+        { show_close_error( "decompressor feeder" ); _exit( 2 ); }
       _exit( wait_for_child( pid2, file_type.c_str() ) );
       }
 					// parent
     close( fda[0] ); close( fda[1] ); close( fda2[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
@@ -161,14 +153,13 @@ bool set_data_feeder( int * const infdp, pid_t * const pidp )
           !feed_data( old_infd, fda[1], magic_data, magic_size ) )
         _exit( 2 );
       if( close( fda[1] ) != 0 )
-        { show_error( "Can't close output of data feeder", errno );
-          _exit( 2 ); }
+        { show_close_error( "data feeder" ); _exit( 2 ); }
       _exit( 0 );
       }
 					// parent
     close( fda[1] );
     if( pid < 0 )
-      { show_error( "Can't fork data feeder", errno ); return false; }
+      { show_fork_error( "data feeder" ); return false; }
     *pidp = pid;
     }
   return true;
@@ -214,6 +205,38 @@ void show_error( const char * const msg, const int errcode,
   }
 
 
+void show_error2( const char * const msg, const char * const name ) throw()
+  {
+  if( verbosity >= 0 )
+    std::fprintf( stderr, "%s: %s `%s': %s.\n",
+                  util_name, msg, name, std::strerror( errno ) );
+  }
+
+
+void show_close_error( const char * const prog_name ) throw()
+  {
+  if( verbosity >= 0 )
+    std::fprintf( stderr, "%s: Can't close output of %s: %s.\n",
+                  util_name, prog_name, std::strerror( errno ) );
+  }
+
+
+void show_exec_error( const char * const prog_name ) throw()
+  {
+  if( verbosity >= 0 )
+    std::fprintf( stderr, "%s: Can't exec `%s': %s.\n",
+                  util_name, prog_name, std::strerror( errno ) );
+  }
+
+
+void show_fork_error( const char * const prog_name ) throw()
+  {
+  if( verbosity >= 0 )
+    std::fprintf( stderr, "%s: Can't fork `%s': %s.\n",
+                  util_name, prog_name, std::strerror( errno ) );
+  }
+
+
 void internal_error( const char * const msg )
   {
   if( verbosity >= 0 )