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Edit File: pdflatexpicscale
#!/usr/bin/perl -w # Scale pictures to be included into a LaTeX generated PDF file. # written by peter willadt # contact: willadt at t-online.de # this software is subject to the LaTeX project public license. # changes: # 2016-07-27 first public release # 2016-08-02 changed regex to prevent problem with long filenames # 2016-08-02 changed > to gt (shame on me) # 2016-10-20 corrected behaviour when program gets called without arguments # (shame on me, again) # 2016-10-20 added undocumented switch --help to show usage. # 2017-01-23 Updated documentation (see pdflatexpicscale.tex), # and corrected version number # Please note: version numbers will be updated to keep sync # with the documentation, even when the perl code does not change. # 2017-02-01 pdflatexpicscale did not work correct when log lines were # wrapped twice. This is fixed. # use strict; use File::Basename; use File::Spec; use File::Copy; use Getopt::Long; my $version = '0.32'; my $versiondate = '2018-02-12'; #version %version my $showversion; my $verbose; my $help; my $TeXproject; # folders for scaled graphics, relative names my $printfolderprefix = 'printimg'; my $previewfolderprefix = 'previewimg'; my $srcfolder = ''; # final resolution. special b/w handling not implemented yet my $printdpi = 300; my $printbwdpi = 4 * $printdpi; my $previewdpi = 72; my $tolerance = 20; # file formats my %canhandle = ( JPG => '1', PNG => '1', ); # bookkeeping my %processedimages; my $copied = 0; my $scaled = 0; my $skipped = 0; sub printInplaceError { my $filename = shift; print "I will not do inplace modification of graphics:\n" . "($filename) will not be processed. (Missing path?)\n"; } sub printMissingError { my $filename = shift; print "I can not find ($filename). (What have you done?)\n"; } sub handleImage { my $filename = shift; my $dstwidth = shift; my $dstheight = shift; my ($srcwidth, $srcheight, $srcdepth); my $dstfilename; my $xfilename; my @xsrcdirs; my @dstdirs; my @convertargs; my $idstring; print "$filename\n"; $dstdirs[0] = '.'; $dstdirs[1] = $printfolderprefix; $dstfilename = File::Spec->catfile(@dstdirs, basename($filename)); if($filename eq $dstfilename){ unless ($srcfolder gt ' ') { printInplaceError($filename); $skipped++; return; } $xsrcdirs[0] = $srcfolder; $xfilename = File::Spec->catfile(@xsrcdirs, basename($filename)); unless (-e $xfilename){ printMissingError($xfilename); $skipped++; return; } $filename = $xfilename; } # check for image width and height $idstring = `identify -format "%w x %h %[depth] " $filename`; return unless $idstring =~ /(\d+) x (\d+) (\d+)/; $srcwidth = $1; $srcheight = $2; $srcdepth = $3; if($srcdepth == 1) { # hires for bw pix $dstwidth = int($dstwidth * $printbwdpi / 72.27 + .5); $dstheight = int($dstheight * $printbwdpi / 72.27 + .5); }else { # moderate res for any other $dstwidth = int($dstwidth * $printdpi / 72.27 + .5); $dstheight = int($dstheight * $printdpi / 72.27 + .5); } if(-e $dstfilename){ # if younger and requested size: skip my ($mtime1, $mtime2, $size1, $size2, $idstring2, $existwidth); my ($dev, $ino, $mode, $nlink, $uid, $gid, $rdev, $size, $atime, $ctime, $blksize, $blocks); ($dev, $ino, $mode, $nlink, $uid, $gid, $rdev, $size, $atime, $mtime1, $ctime, $blksize, $blocks) = stat($dstfilename); ($dev, $ino, $mode, $nlink, $uid, $gid, $rdev, $size, $atime, $mtime2, $ctime, $blksize, $blocks) = stat($filename); if($mtime1 >= $mtime2){ $idstring2 = `identify -format "%w x %h %[depth] " $dstfilename`; if($idstring2 =~ /(\d+) x (\d+) (\d+)/){ $existwidth = $1; if($existwidth == $dstwidth){ $processedimages{$filename} = $existwidth; $skipped++; return; } } } } if(($dstwidth >= $srcwidth) || ($dstwidth *(100 + $tolerance)/100 >= $srcwidth)) { # we do no upscaling, but will probably copy the file. if (defined $processedimages{$filename}){ $skipped++; }else { $processedimages{$filename} = $srcwidth; print "will copy $filename to $dstfilename\n" if $verbose; copy($filename, $dstfilename); $copied++; return; } }else { if((defined $processedimages{$filename}) && ($processedimages{$filename} >= $dstwidth)) { $skipped++; return; } # we do some downscaling $processedimages{$filename} = $dstwidth; $convertargs[0] = 'convert'; $convertargs[1] = ${filename}; $convertargs[2] = '-resize'; # $convertargs[3] = "${dstwidth}x${dstheight}!"; $convertargs[3] = "${dstwidth}x${dstheight}"; $convertargs[4] = "-density"; $convertargs[5] = $printdpi; $convertargs[6] = ${dstfilename}; print "will @convertargs\n" if $verbose; system(@convertargs); $scaled++; } } sub readlog { my $logfilename = shift; $logfilename .= '.log'; my ($picname, $picext, $picwidth, $picheight); my ($picextu, $state, $buffer); open LOGFILE, "<$logfilename" or die "Cannot read $logfilename"; $state = 0; while (<LOGFILE>){ if (/^Package pdftex\.def\sInfo\:\s/){ $buffer = $_; unless ($buffer =~ /\sused/){ chomp $buffer; $buffer .= <LOGFILE>; } # twice ought to be enough unless ($buffer =~ /\sused/){ chomp $buffer; $buffer .= <LOGFILE>; } if($buffer =~ /Info:\s(\S*)\.(\w+)\sused/){ $picname = $1; $picext = $2; ($picextu = $picext) =~ tr/a-z/A-Z/; if(defined $canhandle{$picextu}){ $state = 1; next; } } } next unless ($state == 1); next unless /Requested size: (\d+\.\d+)pt x (\d+\.\d+)pt/; $picwidth = $1; $picheight = $2; handleImage("$picname.$picext", $picwidth, $picheight); $state = 0; } } sub usage { print <<'_endusage'; pdflatexpicscale will downscale large raster images for your TeX project to reasonable size. Basic usage: pdflatexpicscale myarticle where your main LaTeX file is called 'myarticle.tex' and a log file exists. Fine tuning: --destdir=folder (relative path, must exist, defaults to 'printimg' subfolder of current folder) --srcdir=folder (folder to find original images, if this software can't figure it out on it's own, because you already used the target directory.) --printdpi=XXX (default 300) --tolerance=XX (default 20 Percents over printdpi to ignore scaling) --verbose (if you want to know what the script attempts to do) --version (show software version) _endusage } GetOptions('verbose' => \$verbose, 'printdpi=i' => \$printdpi, 'destdir=s' => \$printfolderprefix, 'tolerance=i' => \$tolerance, 'srcdir=s' => \$srcfolder, 'version' => \$showversion, 'help' => \$help, 'usage' => \$help, ); if($showversion){ print "pdflatexpicscale Version $version $versiondate\n"; } if($help){ usage(); } $TeXproject = shift; if((defined $TeXproject) && ($TeXproject gt ' ')){ readlog($TeXproject); if($verbose) { print "pdflatexpicscale Version $version:\n" . "$copied file(s) copied, $scaled file(s) converted " . "and $skipped occurence(s) skipped for:\n${TeXproject}.log.\n"; } }else { usage(); }