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pkgdiff.pl
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#!/usr/bin/perl
###########################################################################
# PkgDiff - Package Changes Analyzer 1.8
# A tool for visualizing changes in Linux software packages
#
# Copyright (C) 2012-2025 Andrey Ponomarenko's ABI Laboratory
#
# Written by Andrey Ponomarenko
#
# PLATFORMS
# =========
# GNU/Linux, FreeBSD, Mac OS X
#
# PACKAGE FORMATS
# ===============
# RPM, DEB, TAR.GZ, JAR, etc.
#
# REQUIREMENTS
# ============
# Perl 5 (5.8 or newer)
# GNU Diff
# GNU Wdiff
# GNU Awk
# GNU Binutils (readelf)
# Perl-File-LibMagic
# RPM (rpm, rpmbuild, rpm2cpio) for analysis of RPM-packages
# DPKG (dpkg, dpkg-deb) for analysis of DEB-packages
#
# SUGGESTIONS
# ===========
# ABI Compliance Checker (1.99.1 or newer)
# ABI Dumper (0.97 or newer)
#
# 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
# the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program. If not, see <http://www.gnu.org/licenses/>.
###########################################################################
use strict;
use Getopt::Long;
Getopt::Long::Configure ("posix_default", "no_ignore_case", "permute");
use File::Path qw(mkpath rmtree);
use File::Temp qw(tempdir);
use File::Copy qw(move copy);
use File::Compare;
use Cwd qw(abs_path cwd);
use Config;
use Fcntl;
my $TOOL_VERSION = "1.8";
my $ORIG_DIR = cwd();
# Internal modules
my $MODULES_DIR = getModules();
push(@INC, getDirname($MODULES_DIR));
my $DIFF = $MODULES_DIR."/Internals/Tools/rfcdiff-1.41-CUSTOM.sh";
my $JAVA_DUMP = $MODULES_DIR."/Internals/Tools/java-dump.sh";
my $ACC = "abi-compliance-checker";
my $ACC_VER = "1.99.1";
my $ABI_DUMPER = "abi-dumper";
my $ABI_DUMPER_VER = "0.97";
my ($Help, $ShowVersion, $DumpVersion, $GenerateTemplate, %Descriptor,
$CheckUsage, $PackageManager, $OutputReportPath, $ShowDetails, $Debug,
$SizeLimit, $QuickMode, $DiffWidth, $DiffLines, $Minimal, $NoWdiff,
$IgnoreSpaceChange, $IgnoreAllSpace, $IgnoreBlankLines, $ExtraInfo,
$CustomTmpDir, $HideUnchanged, $TargetName, $TargetTitle, %TargetVersion,
$CompareDirs, $ListAddedRemoved, $SkipSubArchives, $LinksTarget,
$SkipPattern, $AllText, $CheckByteCode, $FullMethodDiffs, $TrackUnchanged,
$MoveStyles);
my $CmdName = getFilename($0);
my %ERROR_CODE = (
# Unchanged verdict
"Unchanged"=>0,
# Changed verdict
"Changed"=>1,
# Undifferentiated error code
"Error"=>2,
# System command is not found
"Not_Found"=>3,
# Cannot access input files
"Access_Error"=>4,
# Cannot find a module
"Module_Error"=>9
);
my $HomePage = "https://github.com/lvc/pkgdiff";
my $ShortUsage = "Package Changes Analyzer (PkgDiff) $TOOL_VERSION
A tool for visualizing changes in Linux software packages
Copyright (C) 2022 Andrey Ponomarenko's ABI Laboratory
License: GNU GPL
Usage: $CmdName PKG1 PKG2 [options]
Example: $CmdName OLD.rpm NEW.rpm
More info: $CmdName --help\n";
if($#ARGV==-1)
{
printMsg("INFO", $ShortUsage);
exit(0);
}
GetOptions("h|help!" => \$Help,
"v|version!" => \$ShowVersion,
"dumpversion!" => \$DumpVersion,
# arguments
"old=s" => \$Descriptor{1},
"new=s" => \$Descriptor{2},
# options
"check-usage!" => \$CheckUsage,
"pkg-manager=s" => \$PackageManager,
"template!" => \$GenerateTemplate,
"report-path=s" => \$OutputReportPath,
"details!" => \$ShowDetails,
"size-limit=s" => \$SizeLimit,
"width=s" => \$DiffWidth,
"prelines=s" => \$DiffLines,
"ignore-space-change" => \$IgnoreSpaceChange,
"ignore-all-space" => \$IgnoreAllSpace,
"ignore-blank-lines" => \$IgnoreBlankLines,
"quick!" => \$QuickMode,
"minimal!" => \$Minimal,
"no-wdiff!" => \$NoWdiff,
"extra-info=s" => \$ExtraInfo,
"tmp-dir=s" => \$CustomTmpDir,
"c|hide-unchanged!" => \$HideUnchanged,
"debug!" => \$Debug,
"v1|vnum1=s" => \$TargetVersion{1},
"v2|vnum2=s" => \$TargetVersion{2},
"name=s" => \$TargetName,
"title=s" => \$TargetTitle,
"d|directories!" => \$CompareDirs,
"list-added-removed!" => \$ListAddedRemoved,
"skip-subarchives!" => \$SkipSubArchives,
"skip-pattern=s" => \$SkipPattern,
"all-text!" => \$AllText,
"links-target=s" => \$LinksTarget,
"check-byte-code!" => \$CheckByteCode,
"full-method-diffs!" => \$FullMethodDiffs,
"track-unchanged!" => \$TrackUnchanged,
"move-styles=s" => \$MoveStyles
) or errMsg();
my $TMP_DIR = undef;
if($CustomTmpDir)
{
printMsg("INFO", "using custom temp directory: $CustomTmpDir");
$TMP_DIR = abs_path($CustomTmpDir);
mkpath($TMP_DIR);
cleanTmp();
}
else {
$TMP_DIR = tempdir(CLEANUP=>1);
}
sub cleanTmp()
{
foreach my $E ("null", "error",
"unpack", "output", "fmt",
"content1", "content2",
"xcontent1", "xcontent2")
{
if(-f $TMP_DIR."/".$E) {
unlink($TMP_DIR."/".$E);
}
elsif(-d $TMP_DIR."/".$E) {
rmtree($TMP_DIR."/".$E);
}
}
}
if(@ARGV)
{
if($#ARGV==1)
{ # pkgdiff OLD.pkg NEW.pkg
$Descriptor{1} = $ARGV[0];
$Descriptor{2} = $ARGV[1];
}
else {
errMsg();
}
}
sub errMsg()
{
printMsg("INFO", "\n".$ShortUsage);
exit($ERROR_CODE{"Error"});
}
my $HelpMessage="
NAME:
Package Changes Analyzer
A tool for visualizing changes in Linux software packages
DESCRIPTION:
Package Changes Analyzer (PkgDiff) is a tool for visualizing
changes in Linux software packages (RPM, DEB, TAR.GZ, etc).
The tool can compare directories as well (with the help of
the -d option).
The tool is intended for Linux maintainers who are interested
in ensuring compatibility of old and new versions of packages.
This tool is free software: you can redistribute it and/or
modify it under the terms of the GNU GPL.
USAGE:
$CmdName PKG1 PKG2 [options]
$CmdName -d DIR1/ DIR2/ [options]
EXAMPLES:
$CmdName OLD.rpm NEW.rpm
$CmdName OLD.deb NEW.deb
$CmdName OLD.tar.gz NEW.tar.gz
ARGUMENTS:
PKG1
Path to the old version of a package (RPM, DEB, TAR.GZ, etc).
If you need to analyze a group of packages then you can
pass an XML-descriptor of this group (VERSION.xml file):
<version>
/* Group version */
</version>
<group>
/* Group name */
</group>
<packages>
/path1/to/package(s)
/path2/to/package(s)
...
</packages>
PKG2
Path to the new version of a package (RPM, DEB, TAR.GZ, etc).
INFORMATION OPTIONS:
-h|-help
Print this help.
-v|-version
Print version information.
-dumpversion
Print the tool version ($TOOL_VERSION) and don't do anything else.
GENERAL OPTIONS:
-report-path PATH
Path to the report.
Default:
pkgdiff_reports/<pkg>/<v1>_to_<v2>/changes_report.html
-details
Try to create detailed reports.
-size-limit SIZE
Don't analyze files larger than SIZE in kilobytes.
-width WIDTH
Width of the Visual Diff.
Default: 80
-prelines NUM
Size of the context in the Visual Diff.
Default: 10
-ignore-space-change
Ignore changes in the amount of white space.
-ignore-all-space
Ignore all white space.
-ignore-blank-lines
Ignore changes whose lines are all blank.
-quick
Quick mode without creating of Visual Diffs for files.
-minimal
Try to find a smaller set of changes.
-no-wdiff
Do not use GNU Wdiff for analysis of changes.
This may be two times faster, but produces lower
quality reports.
OTHER OPTIONS:
-check-usage
Check if package content is used by other
packages in the repository.
-pkg-manager NAME
Specify package management tool.
Supported:
urpm - Mandriva URPM
-template
Create XML-descriptor template ./VERSION.xml
-extra-info DIR
Dump extra info to DIR.
-tmp-dir DIR
Use custom temp directory.
-c|-hide-unchanged
Don't show unchanged files in the report.
-debug
Show debug info.
-name NAME
Set name of the package to NAME.
-title TITLE
Set name of the package in the title of the report to TITLE.
-vnum1 NUM
Set version number of the old package to NUM.
-vnum2 NUM
Set version number of the new package to NUM.
-links-target TARGET
Set target attribute for links in the report:
_self (default)
_blank
-list-added-removed
Show content of added and removed text files.
-skip-subarchives
Skip checking of archives inside the input packages.
-skip-pattern REGEX
Don't check files matching REGEX.
-d|-directories
Compare directories instead of packages.
-all-text
Treat all files in the archive as text files.
-check-byte-code
When comparing Java classes, also check for byte code changes.
-full-method-diffs
Perform a full diff of method bodies when -check-byte-code is specified.
-track-unchanged
Track unchanged files in extra info.
REPORT:
Report will be generated to:
pkgdiff_reports/<pkg>/<v1>_to_<v2>/changes_report.html
EXIT CODES:
0 - Unchanged. The tool has run without any errors.
non-zero - Changed or the tool has run with errors.
MORE INFORMATION:
".$HomePage."\n";
sub helpMsg() {
printMsg("INFO", $HelpMessage."\n");
}
my $DescriptorTemplate = "
<?xml version=\"1.0\" encoding=\"utf-8\"?>
<descriptor>
/* Primary sections */
<version>
/* Version of a group of packages */
</version>
<group>
/* Name of a group of packages */
</group>
<packages>
/* The list of paths to packages and/or
directories with packages, one per line */
</packages>
<skip_files>
/* The list of files that should
not be analyzed, one per line */
</skip_files>
</descriptor>";
# Settings
my $RENAME_FILE_MATCH = 0.25; # 0.55
my $RENAME_CONTENT_MATCH = 0.85;
my $MOVE_CONTENT_MATCH = 0.90;
my $MOVE_DEPTH = 4;
my $DEFAULT_WIDTH = 80;
my $DIFF_PRE_LINES = 10;
my $EXACT_DIFF_SIZE = 256*1024;
my $EXACT_DIFF_RATE = 0.1;
my $USE_LIBMAGIC = 0;
my %Group = (
"Count1"=>0,
"Count2"=>0
);
my %FormatInfo = ();
my %FileFormat = ();
my %TermFormat = ();
my %DirFormat = ();
my %BytesFormat = ();
# Cache
my %Cache;
# Modes
my $CheckMode = "Single";
# Packages
my %TargetPackages;
my %PackageFiles;
my %PathName;
my %FileChanges;
my %PackageInfo;
my %InfoChanges;
my %PackageUsage;
my %TotalUsage;
my %RemovePrefix;
# Deps
my %PackageDeps;
my %TotalDeps;
my %DepChanges;
# Files
my %AddedFiles;
my %RemovedFiles;
my %ChangedFiles;
my %UnchangedFiles;
my %StableFiles;
my %RenamedFiles;
my %RenamedFiles_R;
my %MovedFiles;
my %MovedFiles_R;
my %ChangeRate;
my %SkipFiles;
# Symbols
my %AddedSymbols;
my %RemovedSymbols;
# Report
my $REPORT_PATH;
my $REPORT_DIR;
my %RESULT;
my $STAT_LINE;
# ABI
my %ABI_Change;
# Other
my %ArchiveFormats = (
"TAR.GZ" => ["tar.gz", "tgz",
"tar.Z", "taz"],
"TAR.XZ" => ["tar.xz", "txz"],
"TAR.BZ2" => ["tar.bz2", "tbz2",
"tbz", "tb2"],
"TAR.LZMA" => ["tar.lzma",
"tlzma"],
"TAR.LZ" => ["tar.lz", "tlz"],
"ZIP" => ["zip", "zae"],
"TAR" => ["tar"],
"LZMA" => ["lzma"],
"GZ" => ["gz"],
"XZ" => ["xz"],
"JAR" => ["jar", "war",
"ear", "aar"],
"APK" => ["apk"]
);
my $ARCHIVE_EXT = getArchivePattern();
sub getModules()
{
my $TOOL_DIR = getDirname($0);
if(not $TOOL_DIR) {
$TOOL_DIR = ".";
}
my @SEARCH_DIRS = (
# tool's directory
abs_path($TOOL_DIR),
# relative path to modules
abs_path($TOOL_DIR)."/../share/pkgdiff",
# system directory
'MODULES_INSTALL_PATH'
);
foreach my $DIR (@SEARCH_DIRS)
{
if($DIR!~/\A\//)
{ # relative path
$DIR = abs_path($TOOL_DIR)."/".$DIR;
}
if(-d $DIR."/modules") {
return $DIR."/modules";
}
}
exitStatus("Module_Error", "can't find modules");
}
sub readModule($$)
{
my ($Module, $Name) = @_;
my $Path = getModulePath($Module, $Name);
if(not -f $Path) {
exitStatus("Module_Error", "can't access \'$Path\'");
}
return readFile($Path);
}
sub getModulePath($$)
{
my ($Module, $Name) = @_;
return $MODULES_DIR."/Internals/$Module/".$Name;
}
sub readBytes($)
{ # ELF: 7f454c46
sysopen(FILE, $_[0], O_RDONLY);
sysread(FILE, my $Header, 4);
close(FILE);
my @Bytes = map { sprintf('%02x', ord($_)) } split (//, $Header);
return join("", @Bytes);
}
sub readSymbols($)
{
my $Path = $_[0];
my %Symbols = ();
open(LIB, "readelf -WhlSsdA \"$Path\" 2>\"$TMP_DIR/null\" |");
my $symtab = undef; # indicates that we are processing 'symtab' section of 'readelf' output
while(<LIB>)
{
if(defined $symtab)
{ # do nothing with symtab
if(index($_, "'.dynsym'")!=-1)
{ # dynamic table
$symtab = undef;
}
}
elsif(index($_, "'.symtab'")!=-1)
{ # symbol table
$symtab = 1;
}
elsif(my @Info = readline_ELF($_))
{
my ($Bind, $Ndx, $Symbol) = ($Info[3], $Info[5], $Info[6]);
if($Ndx ne "UND"
and $Bind ne "WEAK")
{ # only imported symbols
$Symbols{$Symbol} = 1;
}
}
}
close(LIB);
return %Symbols;
}
my %ELF_BIND = map {$_=>1} (
"WEAK",
"GLOBAL"
);
my %ELF_TYPE = map {$_=>1} (
"FUNC",
"IFUNC",
"OBJECT",
"COMMON"
);
my %ELF_VIS = map {$_=>1} (
"DEFAULT",
"PROTECTED"
);
sub readline_ELF($)
{ # read the line of 'readelf' output corresponding to the symbol
my @Info = split(/\s+/, $_[0]);
# Num: Value Size Type Bind Vis Ndx Name
# 3629: 000b09c0 32 FUNC GLOBAL DEFAULT 13 _ZNSt12__basic_fileIcED1Ev@@GLIBCXX_3.4
shift(@Info); # spaces
shift(@Info); # num
if($#Info!=6)
{ # other lines
return ();
}
return () if(not defined $ELF_TYPE{$Info[2]});
return () if(not defined $ELF_BIND{$Info[3]});
return () if(not defined $ELF_VIS{$Info[4]});
if($Info[5] eq "ABS" and $Info[0]=~/\A0+\Z/)
{ # 1272: 00000000 0 OBJECT GLOBAL DEFAULT ABS CXXABI_1.3
return ();
}
if(index($Info[2], "0x") == 0)
{ # size == 0x3d158
$Info[2] = hex($Info[2]);
}
return @Info;
}
sub compareSymbols($$)
{
my ($P1, $P2) = @_;
my %Symbols1 = readSymbols($P1);
my %Symbols2 = readSymbols($P2);
my $Changed = 0;
foreach my $Symbol (keys(%Symbols1))
{
if(not defined $Symbols2{$Symbol})
{
$Changed = 1;
if(defined $AddedSymbols{$Symbol})
{ # moved
delete($AddedSymbols{$Symbol});
}
else
{ # removed
$RemovedSymbols{$Symbol} = 1;
}
}
}
foreach my $Symbol (keys(%Symbols2))
{
if(not defined $Symbols1{$Symbol})
{
$Changed = 1;
if(defined $RemovedSymbols{$Symbol})
{ # moved
delete($RemovedSymbols{$Symbol})
}
else
{ # added
$AddedSymbols{$Symbol} = 1;
}
}
}
return $Changed;
}
sub compareFiles($$$$)
{
my ($P1, $P2, $N1, $N2) = @_;
if(not -f $P1
or not -f $P2)
{
if(not -l $P1)
{ # broken symlinks
return (0, "", "", 0, {});
}
}
my $Format = getFormat($P1);
if($Format ne getFormat($P2)) {
return (0, "", "", 0, {});
}
if(getSize($P1) == getSize($P2))
{ # equal size
if(compare($P1, $P2)==0)
{ # equal content
return (-1, "", "", 0, {});
}
}
if($QuickMode)
{ # --quick
return (3, "", "", 1, {});
}
if(skipFileCompare($P1, 1))
{ # <skip_files>
return (2, "", "", 1, {});
}
if(defined $SizeLimit)
{
if(getSize($P1) > $SizeLimit*1024
or getSize($P2) > $SizeLimit*1024)
{
return (2, "", "", 1, {});
}
}
my ($Changed, $DLink, $RLink, $Rate, $Adv) = (0, "", "", 0, {});
if(not $ShowDetails)
{
if($Format eq "SHARED_OBJECT"
or $Format eq "KERNEL_MODULE"
or $Format eq "DEBUG_INFO")
{
if(not compareSymbols($P1, $P2))
{ # equal sets of symbols
return (0, "", "", 0, {});
}
}
}
if(defined $FormatInfo{$Format}{"Format"}
and $FormatInfo{$Format}{"Format"} eq "Text") {
($DLink, $Rate) = diffFiles($P1, $P2, getRPath("diffs", $N1));
}
elsif($Format eq "LICENSE"
or $Format eq "CHANGELOG"
or $Format eq "README"
or $Format eq "INFORM")
{
if($P1=~/\.($ARCHIVE_EXT)\Z/i)
{ # changelog.Debian.gz
my $Page1 = showFile($P1, "ARCHIVE", 1);
my $Page2 = showFile($P2, "ARCHIVE", 2);
($DLink, $Rate) = diffFiles($Page1, $Page2, getRPath("diffs", $N1));
# clean space
unlink($Page1);
unlink($Page2);
}
else
{
($DLink, $Rate) = diffFiles($P1, $P2, getRPath("diffs", $N1));
}
}
elsif($Format eq "SHARED_OBJECT"
or $Format eq "KERNEL_MODULE"
or $Format eq "DEBUG_INFO"
or $Format eq "STATIC_LIBRARY"
or $Format eq "COMPILED_OBJECT"
or $Format eq "SHARED_LIBRARY"
or $Format eq "EXE"
or $Format eq "MANPAGE"
or $Format eq "INFODOC"
or $Format eq "SYMLINK"
or $Format eq "JAVA_CLASS"
or $Format eq "JAVASCRIPT"
or $Format eq "GETTEXT_MO")
{
my $Page1 = showFile($P1, $Format, 1);
my $Page2 = showFile($P2, $Format, 2);
if($Format eq "SYMLINK")
{
if(readFile($Page1) eq readFile($Page2))
{
# clean space
unlink($Page1);
unlink($Page2);
return (0, "", "", 0, {});
}
}
($DLink, $Rate) = diffFiles($Page1, $Page2, getRPath("diffs", $N1));
# clean space
unlink($Page1);
unlink($Page2);
}
else
{
$Changed = 1;
$Rate = checkDiff($P1, $P2);
}
if($DLink or $Changed)
{
if($ShowDetails)
{ # --details
if($ACC and $ABI_DUMPER)
{
if($Format eq "SHARED_OBJECT"
or $Format eq "KERNEL_MODULE"
or $Format eq "DEBUG_INFO"
or $Format eq "STATIC_LIBRARY") {
($RLink, $Adv) = compareABIs($P1, $P2, $N1, $N2, getRPath("details", $N1));
}
}
}
$DLink=~s/\A\Q$REPORT_DIR\E\///;
$RLink=~s/\A\Q$REPORT_DIR\E\///;
return (1, $DLink, $RLink, $Rate, $Adv);
}
return (0, "", "", 0, {});
}
sub hexDump($)
{
my $Path = $_[0];
my ($Hex, $Byte) = ();
open(FILE, "<", $Path);
while(my $Size = read(FILE, $Byte, 16*1024))
{
foreach my $Pos (0 .. $Size-1) {
$Hex .= sprintf('%02x', ord(substr($Byte, $Pos, 1)))."\n";
}
}
close(FILE);
return $Hex;
}
sub checkDiff($$)
{
my ($P1, $P2) = @_;
my $Size1 = getSize($P1);
if(not $Size1)
{ # empty
return 1;
}
my $Size2 = getSize($P2);
my $Rate = abs($Size1 - $Size2)/$Size1;
my $AvgSize = ($Size1 + $Size2)/2;
if($AvgSize<$EXACT_DIFF_SIZE
and $Rate<$EXACT_DIFF_RATE)
{
my $TmpFile = $TMP_DIR."/null";
if(-T $P1)
{ # Text
my $TDiff = $TMP_DIR."/txtdiff";
qx/diff -Bw \"$P1\" \"$P2\" >$TDiff 2>$TmpFile/;
$Rate = getRate($P1, $P2, $TDiff);
unlink($TDiff);
}
else
{ # Binary
my $TDiff = $TMP_DIR."/txtdiff";
my $T1 = $TMP_DIR."/tmp1.txt";
my $T2 = $TMP_DIR."/tmp2.txt";
writeFile($T1, hexDump($P1));
writeFile($T2, hexDump($P2));
qx/diff -Bw \"$T1\" \"$T2\" >$TDiff 2>$TmpFile/;
unlink($T1);
unlink($T2);
$Rate = getRate($P1, $P2, $TDiff);
unlink($TDiff);
}
}
if($Rate>1) {
$Rate=1;
}
return $Rate;
}
sub showFile($$$)
{
my ($Path, $Format, $Version) = @_;
my ($Dir, $Name) = sepPath($Path);
my $Cmd = undef;
if($Format eq "MANPAGE")
{
$Name=~s/\.(gz|bz2|xz)\Z//;
$Cmd = "man \"$Path\" 2>&1|col -bfx";
}
elsif($Format eq "INFODOC")
{
$Name=~s/\.(gz|bz2|xz)\Z//;
$Path=~s/\.(gz|bz2|xz)\Z//;
$Cmd = "info \"$Path\"";
}
elsif($Format eq "ARCHIVE")
{
my $Unpack = $TMP_DIR."/unpack/";
rmtree($Unpack);
unpackArchive($Path, $Unpack);
my @Contents = listDir($Unpack);
if($#Contents==0) {
$Cmd = "cat \"$Unpack/".$Contents[0]."\"";
}
else {
return undef;
}
}
elsif($Format eq "SHARED_OBJECT"
or $Format eq "KERNEL_MODULE"
or $Format eq "DEBUG_INFO"
or $Format eq "EXE"
or $Format eq "COMPILED_OBJECT"
or $Format eq "STATIC_LIBRARY")
{
$Cmd = "readelf -Wa \"$Path\"";
}
elsif($Format eq "SHARED_LIBRARY")
{
$Cmd = "otool -TVL \"$Path\"";
}
elsif($Format eq "SYMLINK")
{
$Cmd = "file -b \"$Path\"";
}
elsif($Format eq "JAVA_CLASS")
{
if(not checkCmd("javap")) {
return undef;
}
$Name=~s/\.class\Z//;
$Name=~s/\$/./;
$Path = $Name;
if ($CheckByteCode) {
if ($FullMethodDiffs) {
$Cmd = "$JAVA_DUMP \"$Path\"";
} else {
$Cmd = "$JAVA_DUMP -s \"$Path\"";
}
} else {
$Cmd = "javap \"$Path\""; # -c -private -verbose
}
chdir($Dir);
}
elsif($Format eq "JAVASCRIPT")
{
if(not checkCmd("js-beautify")) {
return undef;
}
$Cmd = "js-beautify \"$Path\"";
}
elsif($Format eq "GETTEXT_MO")
{
if(not checkCmd("msgunfmt")) {
return undef;
}
$Cmd = "msgunfmt \"$Path\"";
}
else
{ # error
return undef;
}
my $SPath = $TMP_DIR."/fmt/".$Format."/".$Version."/".$Name;
mkpath(getDirname($SPath));
my $TmpFile = $TMP_DIR."/null";
qx/$Cmd >"$SPath" 2>$TmpFile/;
if($Format eq "JAVA_CLASS") {
chdir($ORIG_DIR);
}
if($Format eq "SHARED_OBJECT"
or $Format eq "KERNEL_MODULE"
or $Format eq "DEBUG_INFO"
or $Format eq "EXE"
or $Format eq "COMPILED_OBJECT"
or $Format eq "STATIC_LIBRARY")
{
my $Content = readFile($SPath);
# 00bf608c 00000008 R_386_RELATIVE
# 00bf608c 00000008 R_386_NONE
$Content=~s/[0-9a-f]{8}\s+[0-9a-f]{8}\s+R_386_(RELATIVE|NONE)\s*//g;
# 0000000000210028 0000000000000008 R_X86_64_RELATIVE 0000000000210028
$Content=~s/[0-9a-f]{16}\s+[0-9a-f]{16}\s+R_X86_64_RELATIVE\s+[0-9a-f]{16}\s*//g;
# 00be77ec 0001d507 R_386_JUMP_SLOT 00000000 dlclose
# 0000000000210348 0000001800000007 R_X86_64_JUMP_SLOT 0000000000000000 mq_receive + 0
$Content=~s/\n([0-9a-f]{8}|[0-9a-f]{16})\s+([0-9a-f]{8}|[0-9a-f]{16}) /\nXXX YYY /g;
$Content=~s/ [0-9a-f]{16} / ZZZ /g;
# 563: 00000000 0 FUNC GLOBAL DEFAULT UND FT_New_Face
# 17: 0000000000000000 0 FUNC GLOBAL DEFAULT UND sem_trywait@GLIBC_2.2.5 (2)
$Content=~s/\n\s*\d+:(\s+[0-9a-f]{8}|\s+[0-9a-f]{16})\s+\d+\s+/\nN: XXX W /g;
$Content=~s/\Q$Dir\E\///g;
# Build ID: 88a916b3973e1a27b027706385af41c553a94061
$Content=~s/\s+Build ID: \w+\s+//g;
writeFile($SPath, uniqStr($Content));