Merging upstream version 1.0.

Signed-off-by: Daniel Baumann <mail@daniel-baumann.ch>

16 files changed, 84 insertions, 79 deletions

diff --git a/ChangeLog b/ChangeLog
index 9445e68..7140457 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,46 +1,21 @@
-2013-04-08  Antonio Diaz Diaz  <ant_diaz@teleline.es>
+2013-05-31  Antonio Diaz Diaz  <antonio@gnu.org>
 
-	* Version 1.0-rc7 released.
+	* Version 1.0 released.
+	* Added new option '--format' to all utilities.
+	* main.cc (main): Make 'grep_show_name' tri-state so that file
+	  name is no prefixed to output by default when searching one
+	  file and '--recursive' has not been selected.
 	* Zgrep: Fixed output of option '-L' (it behaved like '-l').
-
-2013-03-15  Antonio Diaz Diaz  <ant_diaz@teleline.es>
-
-	* Version 1.0-rc6 released.
+	* zcmp.cc: Fixed deadlock when '-n' option is used.
 	* zdiff.cc (set_data_feeder): Call decompressor with option "-q"
 	  only if verbosity < 0.
 	* zutils.cc (set_data_feeder): Likewise.
-
-2013-02-21  Antonio Diaz Diaz  <ant_diaz@teleline.es>
-
-	* Version 1.0-rc5 released.
-	* main.cc (main): Zgrep now shows file names by default when
-	  '--recursive' is selected.
-	* zcmp.cc: Fixed deadlock when '-n' option is used.
-	* main.cc: Use 'setmode' instead of '_setmode' on Windows and OS/2.
-
-2012-12-04  Antonio Diaz Diaz  <ant_diaz@teleline.es>
-
-	* Version 1.0-rc4 released.
-	* main.cc (main): Make 'grep_show_name' tri-state so that file name
-	  is no prefixed to output by default when searching one file.
-	* zcat.cc (Line_number): Fixed a portability issue with Solaris 9.
-
-2012-10-26  Antonio Diaz Diaz  <ant_diaz@teleline.es>
-
-	* Version 1.0-rc3 released.
-	* Added new option '--format' to all utilities.
-	* Makefile.in: Added new target 'install-bin'.
-
-2012-04-30  Antonio Diaz Diaz  <ant_diaz@teleline.es>
-
-	* Version 1.0-rc2 released.
-	* Minor fixes.
-	* configure: 'datadir' renamed to 'datarootdir'.
-
-2012-01-18  Antonio Diaz Diaz  <ant_diaz@teleline.es>
-
-	* Version 1.0-rc1 released.
 	* Changed quote characters in messages as advised by GNU Standards.
+	* configure: Options now accept a separate argument.
+	* configure: 'datadir' renamed to 'datarootdir'.
+	* Makefile.in: Added new target 'install-bin'.
+	* Use 'setmode' instead of '_setmode' on Windows and OS/2.
+	* zcat.cc (Line_number): Fixed a portability issue with Solaris 9.
 	* INSTALL: Document installing zutils along with GNU gzip.
 
 2011-01-11  Antonio Diaz Diaz  <ant_diaz@teleline.es>
diff --git a/INSTALL b/INSTALL
index 18a372a..13f8af3 100644
--- a/INSTALL
+++ b/INSTALL
@@ -1,7 +1,7 @@
 Requirements
 ------------
 You will need a C++ compiler.
-I use gcc 4.7.2 and 3.3.6, but the code should compile with any
+I use gcc 4.8.0 and 3.3.6, but the code should compile with any
 standards compliant compiler.
 Gcc is available at http://gcc.gnu.org.
 
diff --git a/NEWS b/NEWS
index a2b4694..aa99159 100644
--- a/NEWS
+++ b/NEWS
@@ -14,11 +14,11 @@ Decompressors are now invoked without the "-q" option except if
 explicitly requested, as some simplified implementations do not accept
 it.
 
-Minor fixes.
-
 Quote characters in messages have been changed as advised by GNU Coding
 Standards.
 
+"configure" now accepts options with a separate argument.
+
 Configure option "--datadir" has been renamed to "--datarootdir" to
 follow GNU Standards.
 
diff --git a/README b/README
index fb812cb..1d5c7da 100644
--- a/README
+++ b/README
@@ -16,6 +16,10 @@ The supported formats are bzip2, gzip, lzip and xz.
 Zcat, zcmp, zdiff, and zgrep are improved replacements for the shell
 scripts provided with GNU gzip. Ztest is unique to zutils.
 
+NOTE: Bzip2 and lzip provide well-defined values of exit status, which
+makes them safe to use with zutils. Gzip and xz may return ambiguous
+warning values, making them less reliable backends for zutils.
+
 
 Copyright (C) 2009, 2010, 2011, 2012, 2013 Antonio Diaz Diaz.
 
diff --git a/configure b/configure
index 3c80638..6447312 100755
--- a/configure
+++ b/configure
@@ -5,10 +5,8 @@
 # This configure script is free software: you have unlimited permission
 # to copy, distribute and modify it.
 
-args=
-no_create=
 pkgname=zutils
-pkgversion=1.0-rc7
+pkgversion=1.0
 progname=zutils
 srctrigger=zutils.h
 
@@ -30,18 +28,19 @@ DIFF=diff
 GREP=grep
 
 # checking whether we are using GNU C++.
-if [ ! -x /bin/g++ ] &&
-   [ ! -x /usr/bin/g++ ] &&
-   [ ! -x /usr/local/bin/g++ ] ; then
+${CXX} --version > /dev/null 2>&1
+if [ $? != 0 ] ; then
 	CXX=c++
 	CXXFLAGS='-W -O2'
 fi
 
 # Loop over all args
-while [ -n "$1" ] ; do
+args=
+no_create=
+while [ $# != 0 ] ; do
 
 	# Get the first arg, and shuffle
-	option=$1
+	option=$1 ; arg2=no
 	shift
 
 	# Add the argument quoted to args
@@ -78,6 +77,14 @@ while [ -n "$1" ] ; do
 	--version | -V)
 		echo "Configure script for ${pkgname} version ${pkgversion}"
 		exit 0 ;;
+	--srcdir)            srcdir=$1 ; arg2=yes ;;
+	--prefix)            prefix=$1 ; arg2=yes ;;
+	--exec-prefix)  exec_prefix=$1 ; arg2=yes ;;
+	--bindir)            bindir=$1 ; arg2=yes ;;
+	--datarootdir)  datarootdir=$1 ; arg2=yes ;;
+	--infodir)          infodir=$1 ; arg2=yes ;;
+	--mandir)            mandir=$1 ; arg2=yes ;;
+
 	--srcdir=*)            srcdir=${optarg} ;;
 	--prefix=*)            prefix=${optarg} ;;
 	--exec-prefix=*)  exec_prefix=${optarg} ;;
@@ -94,11 +101,22 @@ while [ -n "$1" ] ; do
 	DIFF=*)         DIFF=${optarg} ;;
 	GREP=*)         GREP=${optarg} ;;
 
-	--* | *=* | *-*-*) ;;
+	--*)
+		echo "configure: WARNING: unrecognized option: '${option}'" 1>&2 ;;
+	*=* | *-*-*) ;;
 	*)
-		echo "configure: Unrecognized option: \"${option}\"; use --help for usage." 1>&2
+		echo "configure: unrecognized option: '${option}'" 1>&2
+		echo "Try 'configure --help' for more information."
 		exit 1 ;;
 	esac
+
+	# Check if the option took a separate argument
+	if [ "${arg2}" = yes ] ; then
+		if [ $# != 0 ] ; then args="${args} \"$1\"" ; shift
+		else echo "configure: Missing argument to '${option}'" 1>&2
+			exit 1
+		fi
+	fi
 done
 
 # Find the source files, if location was not specified.
diff --git a/doc/zcat.1 b/doc/zcat.1
index 5018140..146e6e0 100644
--- a/doc/zcat.1
+++ b/doc/zcat.1
@@ -1,5 +1,5 @@
 .\" DO NOT MODIFY THIS FILE!  It was generated by help2man 1.37.1.
-.TH ZCAT "1" "April 2013" "Zcat (zutils) 1.0-rc7" "User Commands"
+.TH ZCAT "1" "May 2013" "Zcat (zutils) 1.0" "User Commands"
 .SH NAME
 Zcat \- decompress and concatenate files to standard output
 .SH SYNOPSIS
diff --git a/doc/zcmp.1 b/doc/zcmp.1
index 9ef3a65..68f44fd 100644
--- a/doc/zcmp.1
+++ b/doc/zcmp.1
@@ -1,5 +1,5 @@
 .\" DO NOT MODIFY THIS FILE!  It was generated by help2man 1.37.1.
-.TH ZCMP "1" "April 2013" "Zcmp (zutils) 1.0-rc7" "User Commands"
+.TH ZCMP "1" "May 2013" "Zcmp (zutils) 1.0" "User Commands"
 .SH NAME
 Zcmp \- decompress and compare two files byte by byte
 .SH SYNOPSIS
@@ -20,7 +20,7 @@ If <file1> is compressed, compares <file1> to the file with the
 corresponding decompressed file name (removes the extension from
 <file1>).
 If <file1> is not compressed, compares <file1> to the uncompressed
-contents of <file1>.[bz2|gz|lz|xz] (the first one that is found).
+contents of <file1>.[lz|bz2|gz|xz] (the first one that is found).
 If no suitable file is found, compares <file1> to data read from
 standard input.
 .PP
diff --git a/doc/zdiff.1 b/doc/zdiff.1
index e77fe1d..be9d335 100644
--- a/doc/zdiff.1
+++ b/doc/zdiff.1
@@ -1,5 +1,5 @@
 .\" DO NOT MODIFY THIS FILE!  It was generated by help2man 1.37.1.
-.TH ZDIFF "1" "April 2013" "Zdiff (zutils) 1.0-rc7" "User Commands"
+.TH ZDIFF "1" "May 2013" "Zdiff (zutils) 1.0" "User Commands"
 .SH NAME
 Zdiff \- decompress and compare two files line by line
 .SH SYNOPSIS
@@ -20,7 +20,7 @@ If <file1> is compressed, compares <file1> to the file with the
 corresponding decompressed file name (removes the extension from
 <file1>).
 If <file1> is not compressed, compares <file1> to the uncompressed
-contents of <file1>.[bz2|gz|lz|xz] (the first one that is found).
+contents of <file1>.[lz|bz2|gz|xz] (the first one that is found).
 If no suitable file is found, compares <file1> to data read from
 standard input.
 .PP
diff --git a/doc/zgrep.1 b/doc/zgrep.1
index 764a178..452c26d 100644
--- a/doc/zgrep.1
+++ b/doc/zgrep.1
@@ -1,5 +1,5 @@
 .\" DO NOT MODIFY THIS FILE!  It was generated by help2man 1.37.1.
-.TH ZGREP "1" "April 2013" "Zgrep (zutils) 1.0-rc7" "User Commands"
+.TH ZGREP "1" "May 2013" "Zgrep (zutils) 1.0" "User Commands"
 .SH NAME
 Zgrep \- search compressed files for a regular expression
 .SH SYNOPSIS
diff --git a/doc/ztest.1 b/doc/ztest.1
index 420b68e..7169021 100644
--- a/doc/ztest.1
+++ b/doc/ztest.1
@@ -1,5 +1,5 @@
 .\" DO NOT MODIFY THIS FILE!  It was generated by help2man 1.37.1.
-.TH ZTEST "1" "April 2013" "Ztest (zutils) 1.0-rc7" "User Commands"
+.TH ZTEST "1" "May 2013" "Ztest (zutils) 1.0" "User Commands"
 .SH NAME
 Ztest \- verify integrity of compressed files
 .SH SYNOPSIS
diff --git a/doc/zutils.info b/doc/zutils.info
index 79bc5b8..77e2035 100644
--- a/doc/zutils.info
+++ b/doc/zutils.info
@@ -12,7 +12,7 @@ File: zutils.info,  Node: Top,  Next: Introduction,  Up: (dir)
 Zutils Manual
 *************
 
-This manual is for Zutils (version 1.0-rc7, 8 April 2013).
+This manual is for Zutils (version 1.0, 31 May 2013).
 
 * Menu:
 
@@ -53,6 +53,10 @@ The supported formats are bzip2, gzip, lzip and xz.
    Zcat, zcmp, zdiff, and zgrep are improved replacements for the shell
 scripts provided with GNU gzip. Ztest is unique to zutils.
 
+   NOTE: Bzip2 and lzip provide well-defined values of exit status,
+which makes them safe to use with zutils. Gzip and xz may return
+ambiguous warning values, making them less reliable backends for zutils.
+
 
    Numbers given as arguments to options (positions, sizes) may be
 followed by a multiplier and an optional `B' for "byte".
@@ -181,7 +185,7 @@ following:
      FILE1).
 
   2. If FILE1 is not compressed, compares FILE1 to the uncompressed
-     contents of FILE1.[bz2|gz|lz|xz] (the first one that is found).
+     contents of FILE1.[lz|bz2|gz|xz] (the first one that is found).
 
   3. If no suitable file is found, compares FILE1 to data read from
      standard input.
@@ -264,7 +268,7 @@ following:
      FILE1).
 
   2. If FILE1 is not compressed, compares FILE1 to the uncompressed
-     contents of FILE1.[bz2|gz|lz|xz] (the first one that is found).
+     contents of FILE1.[lz|bz2|gz|xz] (the first one that is found).
 
   3. If no suitable file is found, compares FILE1 to data read from
      standard input.
@@ -584,14 +588,14 @@ Concept Index
 
 Tag Table:
 Node: Top224
-Node: Introduction1005
-Node: Zcat2592
-Node: Zcmp4678
-Node: Zdiff7164
-Node: Zgrep9830
-Node: Ztest12841
-Node: Problems14245
-Node: Concept Index14774
+Node: Introduction1000
+Node: Zcat2794
+Node: Zcmp4880
+Node: Zdiff7366
+Node: Zgrep10032
+Node: Ztest13043
+Node: Problems14447
+Node: Concept Index14976
 
 End Tag Table
 
diff --git a/doc/zutils.texinfo b/doc/zutils.texinfo
index b5a2413..ed65997 100644
--- a/doc/zutils.texinfo
+++ b/doc/zutils.texinfo
@@ -6,8 +6,8 @@
 @finalout
 @c %**end of header
 
-@set UPDATED 8 April 2013
-@set VERSION 1.0-rc7
+@set UPDATED 31 May 2013
+@set VERSION 1.0
 
 @dircategory Data Compression
 @direntry
@@ -74,6 +74,10 @@ The supported formats are bzip2, gzip, lzip and xz.
 Zcat, zcmp, zdiff, and zgrep are improved replacements for the shell
 scripts provided with GNU gzip. Ztest is unique to zutils.
 
+NOTE: Bzip2 and lzip provide well-defined values of exit status, which
+makes them safe to use with zutils. Gzip and xz may return ambiguous
+warning values, making them less reliable backends for zutils.
+
 @sp 1
 Numbers given as arguments to options (positions, sizes) may be followed
 by a multiplier and an optional @samp{B} for "byte".
@@ -211,7 +215,7 @@ corresponding decompressed file name (removes the extension from
 @var{file1}).
 @item
 If @var{file1} is not compressed, compares @var{file1} to the
-uncompressed contents of @var{file1}.[bz2|gz|lz|xz] (the first one that
+uncompressed contents of @var{file1}.[lz|bz2|gz|xz] (the first one that
 is found).
 @item
 If no suitable file is found, compares @var{file1} to data read from
@@ -303,7 +307,7 @@ corresponding decompressed file name (removes the extension from
 @var{file1}).
 @item
 If @var{file1} is not compressed, compares @var{file1} to the
-uncompressed contents of @var{file1}.[bz2|gz|lz|xz] (the first one that
+uncompressed contents of @var{file1}.[lz|bz2|gz|xz] (the first one that
 is found).
 @item
 If no suitable file is found, compares @var{file1} to data read from
diff --git a/zcmp.cc b/zcmp.cc
index 0a4c1fc..0e5b781 100644
--- a/zcmp.cc
+++ b/zcmp.cc
@@ -67,7 +67,7 @@ void show_help()
                "corresponding decompressed file name (removes the extension from\n"
                "<file1>).\n"
                "If <file1> is not compressed, compares <file1> to the uncompressed\n"
-               "contents of <file1>.[bz2|gz|lz|xz] (the first one that is found).\n"
+               "contents of <file1>.[lz|bz2|gz|xz] (the first one that is found).\n"
                "If no suitable file is found, compares <file1> to data read from\n"
                "standard input.\n"
                "\nExit status is 0 if inputs are identical, 1 if different, 2 if trouble.\n"
diff --git a/zdiff.cc b/zdiff.cc
index ee8c014..14b679e 100644
--- a/zdiff.cc
+++ b/zdiff.cc
@@ -65,7 +65,7 @@ void show_help()
                "corresponding decompressed file name (removes the extension from\n"
                "<file1>).\n"
                "If <file1> is not compressed, compares <file1> to the uncompressed\n"
-               "contents of <file1>.[bz2|gz|lz|xz] (the first one that is found).\n"
+               "contents of <file1>.[lz|bz2|gz|xz] (the first one that is found).\n"
                "If no suitable file is found, compares <file1> to data read from\n"
                "standard input.\n"
                "\nExit status is 0 if inputs are identical, 1 if different, 2 if trouble.\n"
diff --git a/zutils.cc b/zutils.cc
index 798da03..850504a 100644
--- a/zutils.cc
+++ b/zutils.cc
@@ -54,13 +54,13 @@ int readblock( const int fd, uint8_t * const buf, const int size )
   errno = 0;
   while( rest > 0 )
     {
-    errno = 0;
     const int n = read( fd, buf + size - rest, rest );
     if( n > 0 ) rest -= n;
     else if( n == 0 ) break;				// EOF
     else if( errno != EINTR && errno != EAGAIN ) break;
+    errno = 0;
     }
-  return ( rest > 0 ) ? size - rest : size;
+  return size - rest;
   }
 
 
@@ -73,12 +73,12 @@ int writeblock( const int fd, const uint8_t * const buf, const int size )
   errno = 0;
   while( rest > 0 )
     {
-    errno = 0;
     const int n = write( fd, buf + size - rest, rest );
     if( n > 0 ) rest -= n;
     else if( n < 0 && errno != EINTR && errno != EAGAIN ) break;
+    errno = 0;
     }
-  return ( rest > 0 ) ? size - rest : size;
+  return size - rest;
   }
 
 
diff --git a/zutils.h b/zutils.h
index 778daa3..1a2bb93 100644
--- a/zutils.h
+++ b/zutils.h
@@ -30,7 +30,7 @@ const char * const simple_extensions[num_formats] =
 const char * const decompressor_names[num_formats] =
   { "bzip2", "gzip", "lzip", "xz" };
 const int8_t format_order[num_formats] =
-  { fmt_gz, fmt_lz, fmt_bz2, fmt_xz };		// search order
+  { fmt_lz, fmt_bz2, fmt_gz, fmt_xz };		// search order
 
 // first magic byte must be different among formats
 enum { bzip2_magic_size = 3,