reslog change log
2007-12-03 version 3.13
1. t/03-errors.t: Added.
2. t/reslog.*.html: Revised.
3. t/_helper.pm: Fixed the way deal with time zone in the
mkrndlog_normal() and mkrndlog_noip() subroutines, using
gmtime($t + $tz) instead of calculating time zone offset
with $tz + (timegm(localtime)-timelocal(localtime)). This
is the easy and right way to do.
4. reslog.zh-tw.html, TODO.zh-tw, TODO.zh-cn: Changed
'ÁcÅ餤¤å' to '¥¿Å餤¤å'.
2007-12-02
1. t/02-several.t: Added, to replace the t/04-hybrix.t.
2. t/04-hybrix.t: Removed
2007-12-01
1. reslog: Use "use 5.008" instead of "use 5.8.0", for
compatibility with older Perl, and get ride of the warning
of Perl 5.10.
2007-11-30
1. reslog, reslog.*.html: The default keep mode in the
documentation is "restart", but it is actually running
"delete" in the source code and in the test suite. The
documentation is fixed to "delete" according to the
actual program behavior.
2. t/_helper.pm: Renamed the mkrndlog() subroutine to
mkrndlog_normal(). Renamed the mknoiprndlog()
subroutine to mkrndlog_noip(). Added the
mkrndlog_empty() subroutine.
3. reslog: Added check on whether the suffix to be appended
is the same to the suffix to be trimmed. This cause
the same file be overwritten as the resolved result.
4. t/01-exhaust.t: Combining t/01-plain.t, t/02-gzip.t,
t/03-bzip2.t
2007-11-27
1. Makefile.PL, Build.PL: Clean-up old file found message.
2. Makefile.PL: Added message for optional prerequisites.
3. reslog.zh-tw.html, reslog.zh-cn.html: Tag the languages.
2007-11-26
1. t/_helper.pm, t/*.t: Updated the license to GPLv3.
2. README.zh-tw, README.zh-cn: File "Changes.zh-tw" and
"Changes.zh-cn" no longer exists. Fixed as "Changes".
3. fdl.txt: Added.
4. MSWin32 and MS-Win32 is now written as MS-Windows in the
documentation.
5. reslog: Reorder the debug message in the check_gzip() and
check_bzip2() methods of the _private::IO class.
6. Makefile.PL, Build.PL: Fixed comment typo. ("any old files")
7. Build.PL: Added "recommends" and "build_requires".
2007-11-25
1. reslog.en.html, INSTALL: Fixed the typo "archieve" as "archive".
2. reslog: Fixed to return ref($GZIP_IO)->new instead of $GZIP_IO
in the check_gzip() method, ref($BZIP2_IO)->new instead of
$BZIP2_IO in the check_bzip2() method of the _private::IO class,
so that a same I/O handler will not be returned to different log
files.
2007-11-22
1. reslog: Fixed $SIG{__WARN__} to $SIG{"__WARN__"} in the
parse_args() subroutine.
2007-11-20
1. t/_helper.pm: Added the randip() subroutine to provide random IP
that has reliable reverse-lookup DNS.
2007-11-19
1. t/_helper.pm: Fixed the flist() subroutine to exclude non-files.
2. t/_helper.pm, t/*.t: Add the prsrvsrc() subroutine to preserve the
source file for debugging.
3. t/_helper.pm, t/*.t: Add the cleanup() subroutine to clean-up the
test directory after success or failure.
4. t/*.t: Removed the strange escaping of double-quotation character
of reslog path.
2007-11-18
1. reslog: Move the TYPE_PLAIN, TYPE_GZIP and TYPE_BZIP2 constants
from the _private::LogFile package to the main package, so that
other packages can use it, too.
2. t/_helper.pm: Added the TYPE_PLAIN, TYPE_GZIP and TYPE_BZIP2
constants for easier use.
3. reslog: Clean up File::Spec::Functions references.
4. Makefile.PL and Build.PL: Changed the clean-up list from "t/log/*"
to "t/log*".
2007-11-17
1. _helper.pm: Moved rel2abs() from a method of the _private::LogFile
class to a utility subroutine of the main package. rel2abs() may
be used elsewhere.
2007-11-15
1. UPGRADE, UPGRADE.zh-tw, UPGRADE.zh-cn: Removed the outdated file
location change for version 3.02 or earlier. The file location
has changed later. The old change is meaningless.
2. UPGRADE, UPGRADE.zh-tw, UPGRADE.zh-cn: Added "perl Build.PL" to
the file location change instruction.
3. UPGRADE.zh-tw, UPGRADE.zh-cn: Added Chinese translation to the
reason of the script name change.
4. t/_helper.pm: Update the style of mkrndlog() and mknoiprndlog().
Added more status, adjusting more possibility to HTTP/1.1 and
status 200. Fixed the comment that host type 1 is IP and 0 is
domain name.
5. t/_helper.pm: Added a random URL generator to mkrndlog() and
mknoiprndlog().
6. t/_helper.pm: Removed rmalldir() and mkcldir(), and replaced with
mkpath() and rmtree() from File::Path.
2007-11-14
1. reslog: Moved the check_gzip() method and the check_bzip2() method
from the _private::LogFile package to the _private::IO package,
so that it can be used by other packages, and removed the $self
variable. It is not used anyway. The 2 methods are called as
static methods now.
2. reslog: Renamed the new_read() method as open_read(), the
new_write() method as open_write(), the new_append() method
as open_append(). Replaced the strange architech that start
a new instance with $ioclass, with reusing the same $io object.
3. reslog: Renamed the new_read() method as open_read(), the
new_write() method as open_write(), the new_append() method
as open_append(). Replaced the strange architech that start
a new instance with $ioclass, with reusing the same $io object.
4. reslog: Changed " -- " to " - " in comment.
5. reslog: Changed "Deal the ~ home directories under UNIX" to
"Deal with the ~ user home directories under UNIX",
"If start from user's home directory" to
"If it starts from the user home directory".
6. reslog: Fixed the rel2abs() method so that it use getpwuid()
instead of getlogin(), and respect the HOME environment variable
for the current user.
7. reslog: Fixed parse_args() to treat "/dev/stdin" as STDIN on
UNIX-like systems.
8. reslog: Fixed parse_args() and removed the duplicated short help
on Getopt::Long::GetOptions errors.
9. reslog: Fixed show_progress() to reset the clean-up the start
time when progress is finished.
2007-07-23 version 3.12
Fixed the error when there is no IP to be resolved.
1. reslog: Fixed the "division by zero" error when there is no IP
to be resolved.
2. _helper.pm: Added subroutine mknoiprndlog($) to create random log
files without any IP.
3. t/01-plain.t, t/02-gzip.t, t/03-bzip2.t: Added test 15 and 16 to
test resolving empty log files.
2007-07-23 version 3.11
Fixed problem with systems without useithreads, fixed bug checking
STDIN file type with the file program, moved files back to the Perl
default installation directories, and added support for installation
with Module::Build.
1. Build.PL: Added to support installation with Module::Build.
2007-07-22
1. reslog.en.html: Updated "Internet Protocol" as "internet protocol"
in abbreviation title.
2. reslog: Fixed the new() method of the _private::LogFile::STDIN
class, to run unlink0() after checking the file type, to fix the
issue that file was removed before checking the file type with
the file program
3. reslog: Fixed _private::Resolver::Threaded, to load threads
in eval() and define share() when threading is not available, in
order to work with systems that are not compiled with useithreads.
2007-07-22 version 3.10
Documentation fixes.
1. Removed pod2htmd.tmp, pod2htmi.tmp from distribution.
2007-07-21
1. reslog.html: HTML fixes for accessibility, correct HTML character
references, HTML numeric references, author information and so on.
2. Changes: Version number 3.10 was updated as 3.09. I was planning
to bounce the version to 3.10, but forgot this and tagged 3.09
everywhere. Well, then let it be 3.09 anyway.
2007-07-21 version 3.09
License updated to GPLv3, and various fixes.
1. INSTALL and reslog.html: Replace Term::Size with Term::ReadKey.
2. Changes.zh-tw and Changes.zh-cn: Removed.
3. License updated to GPLv3.
4. COPYING.zh-tw and COPYING.zh-cn: Removed since official
translation of GPLv3 is not available yet.
5. Removed stupid "All rights reserved" from the copyright notice.
It shouldn't appear from the beginning.
6. Makefile.PL: Rearranged the order, and added LICENSE and SIGN.
2006-06-12
1. reslog: new() method of _private::LogFile class now opens
the log file and bounces there, instead of checking the log file
first. This way we will return localed system error message.
2. reslog: new() method of _private::LogFile class now opens
the log file in read-only mode when keep all.
2. reslog: check_type() method of _private::LogFile class now returns
the type instead of setting $self->{"type"}, for code readibility.
2006-06-11
1. reslog: new() method of _private::LogFile class now initialized
STDIN with _private::LogFile::STDIN class, instead of bouncing.
parse_args() subroutine does not initialize the files twice now.
2. reslog: Upper-case the error messages in _private::LogFile.
3. reslog: check_io() method of _private::LogFile class now returns
the IO object instead of setting $self->{"io"}, for code
readibility.
4. reslog: Fixed _private::LogFile::STDIN::new() method that we
passed an extra empty argument to tempfile().
5. reslog: Fixed comment, use "handler" instead of "handle".
2006-06-08
1. reslog: Revised the code with my own coding standard.
2. reslog: Added "bundling" to Getopt::Long::Configure(). This
might introduce option-processing incompatibility.
3. reslog: Replaced Term::Size and Win32::Console with Term::ReadKey.
Term::ReadKey seems to be more recent and portable.
2006-05-28
1. INSTALL and reslog.html: Fixed the bzip2 website address.
2005-05-22 version 3.08
Documentation fixes.
1. The last update of the HTML documents are fixed.
2. Changes: English change log was gone. (Maybe lost when
cut-and-paste?) A correct one is supplied.
2005-05-22 version 3.07
1. reslog: No more checks on the availablility of STDIN and STDOUT,
and no more dummy replacement created if not. It was originally
to solve perl.cpan.testers 202971 when running with CPANPLUS under
MSWin32, duplicating closed STDIN causes errors. But I was going
the wrong way. I was testing STDIN/STDOUT/STDRR redirection in
shell backticks. Whether CPANPLUS closes STDIN or not should be
irrevelent. It may be a issue of the shell backticks itself.
Anyhow I rewrote the testing executing method and it is solve. In
fact, it's still not working when STDIN and STDOUT is unavailable.
But IPC::Open3 won't work on that, too. It should be safe to be
ignored.
2. t/_helper.pm: runcmd() was rewritten. It now run the command with
pipe open instead of shell backticks. It's API is hence changed.
3. t/_helper.pm: frread() and frwrite() are added to do raw file
read-write.
4. t/01-plain.t, t/02-gzip.t, t/03-bzip2.t, t/04-hybrix.t: Edited
for the new runcmd() API.
5. t/_helper.pm: Unused subroutines cp() and rm() are removed.
6. t/01-plain.t, t/02-gzip.t, t/03-bzip2.t, t/04-hybrix.t: Added
"use diagnostics;" to help debugging.
7. Successfully tested and run under Linux 2.4 i686, Linux 2.6 i686,
Linux 2.4 AMD64, FreeBSD, Solaris, MacOSX Darwin, MSWin32 and
cygwin. (Thanks to SourceForge compile farm for providing testing
platforms.)
8. THANKS, THANKS.zh-tw, THANKS.zh-cn: Edited.
2005-05-19
1. reslog: Use stat() to check whether STDIN and STDOUT are
available, instead of duplicate them and check if success
directly. This avoids the problem on MacOSX Darwin where trying
to duplicate unopened STDIN crashes directly instead of dies that
can be caught by eval().
2. t/01-plain.t, t/02-gzip.t, t/03-bzip2.t, t/04-hybrix.t: Add
option -d -d -d for more debug information when failures occure.
2. t/_helper.pm: Prepend the command line to the STDERR result to
ease debuging.
2005-05-18
Solaris fix.
1. The file executable on Solaris does not accept file content from
STDIN. This is solved. The target file name is passed to the
file executable. When reading from STDIN in this case, a named
temporary file is created for this and deleted whenever possible.
2. t/01-plain.t, t/02-gzip.t, t/03-bzip2.t, t/04-hybrix.t: Use updir
for composing the script name in the old way, but not popping
splitdir(). $FindBin::Bin may return a directory ended with a
slash which become an empty part in splitdir. (Fedora 3 on AMD64)
3. Tested on Sparc/Solaris, FreeBSD, Fedora 3 on AMD64.
4. t/01-plain.t, t/02-gzip.t, t/03-bzip2.t, t/04-hybrix.t: Setting
wrong testing parameter. -t 1 should be -n 1.
5. reslog: Checks on whether flock() success or not are removed. In
some specific situation flock() is simply not available. For
example, MacOSX Darwin has flock() on local file systems, but not
over NFS. It's not possible to detect and avoid all these
situation.
2005-05-17
1. pgpkey.asc: Updated with the new identity with UTF-8 names.
2005-05-16 version 3.06
1. t/99-pod.t added to test the POD document with Test::Pod.
2. t/01-plain.t, t/02-gzip.t, t/03-bzip2.t: Added test for failures
on existing temporary files.
3. t/_helper.pm: Added prevention of generating IP 127.0.0.1.
4. reslog: Added package _private::Filter and move
_private::Resolver::parse_line() and
_private::Resolver::replace_line() there, to allow easier
implementing different log file formats. Like GeoIP, or maybe
MS-Extended, in the future.
5. reslog: Fixed the POD document. Section of links L<...> should
be section headings in the document, but not manpage sections.
This is fixed. Web site URLs are added to the AUTHOR section.
Mailing list URL is added to the BUGS section.
2005-05-15
Test suite fix.
1. t/02-gzip.t, t/03-bzip2.t: Tests that weren't skipped when gzip or
bzip2 is not available is fixed. (perl.cpan.testers 205969)
2. t/01-plain.t, t/02-gzip2.t, t/03-bzip2.t, t/04-hybrix.t: $nofile
replaced $hasfile. $nogzip replaced $hasgzip. $nobzip2 replaced
$hasbzip2. Skipping reason supplied.
3. reslog: devnull is used instead of tempfile when STDIN or STDOUT
is not available.
4. reslog: Not only STDIN, but all files are checked if they are
specified more than once.
5. t/MyHelper.pm: Subroutines thisfile(), rmalldir(), mkcldir(),
fwrite(), whereis(), ftype(), flist(), mkrndlog(), randword() are
added. Subroutine readfile() is renamed as fread(). Prototype
cplist() is corrected as cp(). Subroutine rm() is removed.
6. t/01-plain.t, t/02-gzip2.t, t/03-bzip2.t, t/04-hybrix.t: I joined
subtests together and shrinked the total number of tests. They
should be one tests anyway. This way I can test more on the result.
7. t/MyHelper.pm: flist() is added so that I can test if the resulted
files list is correct. Several subtests on whether a file exists
are removed.
8. t/MyHelper.pm: ftype() is added so that I can test if the resulted
file format is correct.
9. t/MyHelper.pm: mkrndlog() is added to generate random Apache
access_log files. No more sample log files shipped anymore. The
test result should be better, too, since the content of the test
log files vary now. The content of the shipped samples are all
the same in fact.
10. t/MyHelper.pm: Renamed to _helper.pm, to avoid CPAN namespace
pollution.
2005-05-08
Bug fix.
1. STDIN and STDERR are checked for availability first, and create
dummy ones if they are not available. This fixed the bugs that on
MSWin32 when STDIN is not opened, redirecting unopened STDIN
caused error. This is the situation running "make test" in
CPANPLUS. (perl.cpan.testers 202971)
2005-05-08 version 3.04
1. Fixed a typo when loading File::MMagic that prevent itself from
loading File::MMagic
2005-05-08 version 3.03
1. flock() policy is redesigned. Now all the file handles that are
not opened to ordinary files are not locked. Lock is released when
when file handle is accessed with a foreign program. Files handles
are always locked when opened to ordinary files and accessed
internally, even for anonymous temporary files. This simplified
the locking problem. How foreign programs access file handles are
not an issue anymore.
2. Makefile.PL: MY pacakge is added. Makefile target "upgrade" is
added to remove the old files. constants() and manifypods()
methods are added to alter the default install location. Now we
default to install to /sbin directory and as manpage section 8.
That is what I want.
3. BUGS and TODO section of the embedded POD document updated.
2005-05-02 version 3.02
1. _private::Resolver and _private::Resolver::Threaded are added.
Resolver is independent from the main program so that other log
file filter can use the same code with least modification (GeoIP,
for example).
2. Help text on temporary working file updated.
3. Unsupported file format error message was using $type, which
should be $_. This is fixed.
4. Test 31-39 added to test --suffix and --trim-suffix.
5. Tested with cygwin.
6. Quotes added to the test suite to avoid problem when make test
in directories whose names may contain spaces.
7. Required Perl version changed to 5.8.0. 5.7.2 is a development
version. It's meaningless to require that.
2005-05-01 version 3.0102
1. check_magic(), check_gzip() and check_bzip2() now check the return
value of eval() directly, instead of saving it in $ok and check
that.
2. %CONF is introduced to save the configuration.
3. $THIS_FILE, $SHORTHELP and $VERBOSE are moved from
"use vars qw(...)" to "our (...)", to ease program management.
4. DEFAULT_PROGBAR is introduced to handle the default display status
of the progress bar.
2005-05-01 version 3.0101
Labours' Day!
1. Package name changed from ResLog to main, to avoid polluting the
CPAN namespace.
2. Class names changed from ResLog::* to _private::*, to avoid
polluting the CPAN namespace.
3. check_io() returns an I/O interface object instead of an I/O type
constant, so that the I/O handler object can be generated from it
directly. new_read(), new_write() and new_append() now returns an
I/O handler object generated from the I/O interface object.
4. use_flock() is added to IO::* I/O handlers to see if flock() is
to be used on I/O handlers, to replace run-time checks. Currently
bzip2 on MSWin32 should not use flocks().
5. The constants IO_* are removed.
6. whereis() now uses ExtUtils::MakeMaker MM->maybe_command() to find
the executable. This is inspired from CPAN::FirstTime.
2005-04-26
1. Changes: File edited to widen line limit from 60 columns to 79
columns, to ease reading.
2005-04-26 version 3.01
Bug fix.
1. --suffix and --trim-suffix was not working. I mistakenly put
$_[0] instead of $_[1] in the GetOptions() and this wasn't tested!
^^; This is fixed.
2. Correct a typo in the documentation ("rewrite" should be
"rewrote").
3. Fixed a mistake that Changes.zh-tw was not updated with
Changes.zh-cn.
2005-04-26 version 3.00
1. README updated
2. HTML documentation updated.
3. Uploaded to CPAN.
4. HTML documents updated to conform to W3C Web Content Accessibility
Guide 1.0 Triple-A now.
2005-04-26 version 2.9901
1. INSTALL rewritten.
2. UPGRADE added.
2005-04-25
1. Module::Signature SIGNATURE gpg signature file added. The
external gpg signature file is no longer used.
2. Test suite added.
3. Many bugs fixed, thanks to the test suite.
2005-04-24 version 2.99
This is a new object-oriented version. I rewrote the whole script
from an empty file.
1. Rewrite everything in object-oriented style.
2. ithread threading support is added. With threading it can check
several IP at the same time, dramatically reducing the time cost.
This requires Perl 5.7.2 ithread support. New option
--num-threads is added for this. You can see the effect by
running with -d -d.
3. Supports for running gzip executable, running Compress::Bzip2,
running bzip2 executable are added. This is the benefit of
object-oriented programming. Log entry read/write is now done
through an uniformed I/O handler API. This eased the addition of
new I/O handlers.
4. New option --trim-suffix is added to remove certain file name
suffix before appending our suffix, so that reslog can line-up
with other log file post-processers.
5. file utility can be used instead of File::MMagic if that is not
available.
6. Term::Size is used to display the progress bar under UNIX. Under
MSWin32 Win32::Console will be used instead. reslog can run
without them, but you won't see the progress bar.
7. Instead of resolving line by line, reslog now collects all the IP
found on all the source log files first, resolve those IP
altogether, and replace the IP with the resolved domain name in
the log entries at one time.
8. The script and project name changed from "reslog.pl" to "reslog".
A dot "." in the project name is not valid everywhere, like
SourceForge. "reslog" is enough for a script name under UNIX.
MSWin32 users won't run it with explorer file association anyway,
and there is a pl2bat to turn reslog to reslog.bat.
9. Installation method is changed from my own Install.PL to Perl's
standard ExtUtils::MakeMaker. Utilizing standard is a good thing.
Perl's ExtUtils::MakeMaker is more portable than GNU's autoconf.
As a result, reslog is installed into /usr/bin instead of
/usr/sbin under UNIX. Of course, reslog don't need installation
at all. :p
10. Version number is changed from 3 digits (2.1.0) to 2 digits
(3.00), according to the Perl module convention.
11. ChangeLog is renamed as Changes, as what ExtUtils::MakeMaker
expects.
2003-01-04
1. File handler EOF read checks were fixed with defined().
2002-11-13
1. Long statistic lines are split for easy reading.
2. open_src() was rewritten according to open_src() in arclog.pl, in
order to use comression with gzip and bzip2 binary executables.
2002-11-12
1. RELEASE_NOTES was renamed as ChangeLog.
2. AUTHORS was added.
3. THANKS was added.
4. The option checking logic was rewritten.
5. Fixed several places where $WORKING_SRC was not locked when
created with tempfile.
6. Fixed several places where spaces are between function name and
its opening parenthesis, according to perlstyle(1).
7. Unnecessary parenthesis after slice and catfile were removed.
2002-10-28
1. Fixed a bug that $WORKING_RES was not locked when opened. But it
is unlocked when closed. On some systems (like Linux) you can
request unlock on a filehandle that is not previous locked, but on
some others (like MSWin32) requesting unlock on a filehande that
is not previous locked will cause error. $WORKING_RES doesn't
really need locking at all. It is an anonymous temporary file
handle, that can be accessed by this same working process only.
It has no risk of simultaneously writing without threading, and
I'm not doing threading here. I just lock it for a consistent
programming style. (Thanks to Chen-hsiu Huang
<chenhsiu@gens.dhs.org> for reporting this.)
2002-09-28
1. File::MMagic and file are now used to check the file type, in
addition to the file name suffix, with a more preferred order.
2. check_file_type() was added to check the file types by either
File::MMaagic or file.
3. check_gzip() was added to check the gzip method to use.
4. check_bzip2() was added to check the bzip2 method to use.
2002-09-18 version 2.1.0dev2
SourceForge Memorial Release. It's my first time to apply a project
from SourceForge. Mostly are corrections to the documentation.
SourceForge's project page is added to the available download source
here.
1. reslog.pl's official home page at Tavern IMACAT's was restored.
2. The previous version was renamed from 2.1.0-dev1 to 2.1.0dev1, in
order to unify the version number theme.
3. The project space at SourceForge was applied. Package files are
uploaded to SourceForge now.
4. Project virtual host at SourceForge was set up.
5. SourceForge was added into the documentation as an official
website and download source.
6. Documentation were corrected. Too many places were corrected.
Ignored.
7. HTML document was rewritten to accommodate
XHTML 1.1 recommendation.
2002-08-31 version 2.1.0dev1
Rewrite after almost 1 year, to be run on the newly-released Perl
5.8.0.
1. Filehandles are now saved and passed in global named variables.
This is the way it should be. The old way (initialize the file
handles by duplicate the STDIN and assign them) was just not
natural. It works in Perl 5.6.1, but not in Perl 5.8.0. The
duplicated filehandles are constants, which cannot be assigned new
values.
2. Indents are changed from 1 tab to 4 columns, to accommodate the
Perl style guide documented in perlstyle(1). This increases the
code readability.
3. File operation error handlers are now using the
low-precedence logical "or", instead of "||",
which is recommended in perlop(1). Excessive
parentheses in file operation functions are
removed for this.
4. Traditional Chinese files are now named with suffix ".zh-tw"
instead of ".b5". Simplified Chinese files are now named with
suffix ".zh-cn" instead of ".gb". This is to accommodate
RFC-3066, ISO 639:1988, ISO 3166-1 for language names.
5. PGP signatures of distribution files are added.
6. bzip2 distribution files are added.
2001-09-03 version 2.0.2
1. The bug that taking file handles as private variables and modified
them, was fixed.
2001-09-01 version 2.0.1
1. The bug that resolved cache %NAMES was not global, was fixed. The
resolved result can be pass between multiple files now.
2. A bug that a hyper reference in the English document was not
specified as an absolute URL, was fixed.
2001-06-29 version 2.0.0
First public release.
1. Chinese and English standard header were added.
2. Getopt::Long was introduced to parse the arguments, in replace of
my own argument-parsing routine.
3. File::Spec::Functions was introduced to handle the pathnames.
4. Cwd was introduced to obtain the current working directory.
5. autoflush from IO::Handle was introduced, to autoflush STDOUT
solely under debugging mode.
6. File::Temp was introduced to handle the temporary working file.
Processing is done on temporary working files to reduce the time
occupying the source and result files.
7. Compress::Zlib was used to read the compressed files.
8. rel2abs() was added to convert relative paths to absolute paths.
9. progress_bar() was added to display current status graphically.
10. res_log() was added to loop multiple files.
11. open_src() and save_res() to open source and save result.
12. POD documents was added.
13. Release notes was added.
14. Readme file was added.
15. GNU General Public License was added.
16. Installation guide was added.
17. Install.PL was added in the distribution.
2001-01-21 version 1.3.1
1. autoflush was modified to do only under debugging mode.
2. Simple header was changed standard header.
2001-01-07 version 1.3.0
1. [current/total] was added in the detailed processing messages.
2000-??-?? version 1.2.0
1. Custom parse_args() was added to parse the command line arguments.
2000-??-?? version 1.1.0
1. "--usetmp" was added to process temporary working files.
2. "--suffix" was added to alter the output suffix.
3. "--debug" was added to show detailed processing messages.
2000-12-22 version 1.0.0
First version.