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+
+#
+# TODO TODO TODO
+# if no paperconfig line is found in do_simple it adds to the end of the
+# file the new line, but this does not work on context because it
+# has an \endinput at the end ... needs to be fixed
+#
+# output is done to stdout, not the right config file
+#
+$^W = 1;
+use strict;
+
+
+my %pdftex_papersize = (
+ "letter" => [ '8.5 true in', '11 true in' ],
+ "a4" => [ '210 true mm', '297 true mm' ],
+);
+
+my %xdvi_papersize;
+$xdvi_papersize{'us'}='8.5x11';
+$xdvi_papersize{'letter'}='8.5x11';
+$xdvi_papersize{'usr'}='11x8.5';
+$xdvi_papersize{'legal'}='8.5x14';
+$xdvi_papersize{'ledger'}='17.0x11.0';
+$xdvi_papersize{'tabloid'}= '11.0x17.0';
+$xdvi_papersize{'foolscap'}='13.5x17.0';
+$xdvi_papersize{'a1'}='59.4x84.0cm';
+$xdvi_papersize{'a2'}='42.0x59.4cm';
+$xdvi_papersize{'a3'}='29.7x42.0cm';
+$xdvi_papersize{'a4'}='21.0x29.7cm';
+$xdvi_papersize{'a5'}='14.85x21.0cm';
+$xdvi_papersize{'a6'}='10.5x14.85cm';
+$xdvi_papersize{'a7'}='7.42x10.5cm';
+$xdvi_papersize{'a1r'}='84.0x59.4cm';
+$xdvi_papersize{'a2r'}='59.4x42.0cm';
+$xdvi_papersize{'a3r'}='42.0x29.7cm';
+$xdvi_papersize{'a4r'}='29.7x21.0cm';
+$xdvi_papersize{'a5r'}='21.0x14.85cm';
+$xdvi_papersize{'a6r'}='14.85x10.5cm';
+$xdvi_papersize{'a7r'}='10.5x7.42cm';
+$xdvi_papersize{'b1'}='70.6x100.0cm';
+$xdvi_papersize{'b2'}='50.0x70.6cm';
+$xdvi_papersize{'b3'}='35.3x50.0cm';
+$xdvi_papersize{'b4'}='25.0x35.3cm';
+$xdvi_papersize{'b5'}='17.6x25.0cm';
+$xdvi_papersize{'b6'}='13.5x17.6cm';
+$xdvi_papersize{'b7'}='8.8x13.5cm';
+$xdvi_papersize{'b1r'}='100.0x70.6cm';
+$xdvi_papersize{'b2r'}='70.6x50.0cm';
+$xdvi_papersize{'b3r'}='50.0x35.3cm';
+$xdvi_papersize{'b4r'}='35.3x25.0cm';
+$xdvi_papersize{'b5r'}='25.0x17.6cm';
+$xdvi_papersize{'b6r'}='17.6x13.5cm';
+$xdvi_papersize{'b7r'}='13.5x8.8cm';
+$xdvi_papersize{'c1'}='64.8x91.6cm';
+$xdvi_papersize{'c2'}='45.8x64.8cm';
+$xdvi_papersize{'c3'}='32.4x45.8cm';
+$xdvi_papersize{'c4'}='22.9x32.4cm';
+$xdvi_papersize{'c5'}='16.2x22.9cm';
+$xdvi_papersize{'c6'}='11.46x16.2cm';
+$xdvi_papersize{'c7'}='8.1x11.46cm';
+$xdvi_papersize{'c1r'}='91.6x64.8cm';
+$xdvi_papersize{'c2r'}='64.8x45.8cm';
+$xdvi_papersize{'c3r'}='45.8x32.4cm';
+$xdvi_papersize{'c4r'}='32.4x22.9cm';
+$xdvi_papersize{'c5r'}='22.9x16.2cm';
+$xdvi_papersize{'c6r'}='16.2x11.46cm';
+$xdvi_papersize{'c7r'}='11.46x8.1cm';
+
+my %dvipdfm_papersize = ( 'letter' => 1, 'legal' => 1, 'ledger' => 1,
+ 'tabloid' => 1, 'a4' => 1, 'a3' => 1 );
+
+my $texmfsysvar = `kpsewhich -var-value=TEXMFSYSVAR`;
+chomp($texmfsysvar);
+my $texmfsysconfig = `kpsewhich -var-value=TEXMFSYSCONFIG`;
+chomp($texmfsysconfig);
+
+# we are doing -sys variants
+$ENV{"TEXMFVAR"} = $texmfsysvar;
+$ENV{"TEXMFCONFIG"} = $texmfsysconfig;
+
+my $what = shift;
+
+if (!$what) {
+ print "need an argument\n";
+ exit 1;
+}
+
+# all subs do_* work the same way
+# do_foobar --list
+# list all available sizes with the selected first
+# do_foobar
+# informational string which paper has been selected
+# doo_foobar <paper>
+# selects the given <paper>
+
+if ($what eq "dvips") {
+ do_dvips(@ARGV);
+} elsif ($what eq "dvipdfm") {
+ do_dvipdfm(@ARGV);
+} elsif ($what eq "dvipdfmx") {
+ do_dvipdfmx(@ARGV);
+} elsif ($what eq "context") {
+ do_context(@ARGV);
+} elsif ($what eq "pdftex") {
+ do_pdftex(@ARGV);
+} elsif ($what eq "xdvi") {
+ do_xdvi(@ARGV);
+} else {
+ print "Unknown what $what!\n";
+ exit 1;
+}
+exit 0;
+
+#
+# pdftex pdftexconfig.tex format
+# /--- pdftexconfig.tex ---
+# |...
+# |\pdfpagewidth=NNN true <unit>
+# |\pdfpageheight=NNN true <unit>
+# |...
+# \------------------------
+#
+# Reading is done via --progname=pdftex --format='tex' pdftexconfig.tex
+# Writing is done to TEXMFSYSCONFIG/tex/generic/config/pdftexconfig.tex
+#
+sub do_pdftex {
+ my $newpaper = shift;
+ my $cf = `kpsewhich --progname=pdftex --format=tex pdftexconfig.tex`;
+ chomp($cf);
+ print STDERR "file used for pdftex: $cf\n";
+
+ open(FOO, "<$cf") or die("cannot open file: $!");
+ my @lines = <FOO>;
+ close(FOO);
+
+ my ($cpw, $cph);
+ my ($cpwidx, $cphidx);
+ my $endinputidx;
+ # read the lines and the last pdfpageswidth/height wins
+ for my $idx (0..$#lines) {
+ my $l = $lines[$idx];
+ if ($l =~ m/^\s*\\pdfpagewidth\s*=?\s*(.+)\s*$/) {
+ $cpw = $1;
+ $cpwidx = $idx;
+ next;
+ }
+ if ($l =~ m/^\s*\\pdfpageheight\s*=?\s*(.+)\s*$/) {
+ $cph = $1;
+ $cphidx = $idx;
+ next;
+ }
+ if ($l =~ m/^\s*\\endinput\s*/) {
+ $endinputidx = $idx;
+ next;
+ }
+ }
+ # trying to find the right papersize
+ #
+ my $currentpaper;
+ if (defined($cpw) && defined($cph)) {
+ for my $pname (keys %pdftex_papersize) {
+ my ($w, $h) = @{$pdftex_papersize{$pname}};
+ if (($w eq $cpw) && ($h eq $cph)) {
+ $currentpaper = $pname;
+ last;
+ }
+ }
+ } else {
+ $currentpaper = "(undefined)";
+ }
+ $currentpaper || ($currentpaper = "$cpw x $cph");
+ if (defined($newpaper)) {
+ if ($newpaper eq "--list") {
+ print "$currentpaper\n";
+ for my $p (keys %pdftex_papersize) {
+ print "$p\n" unless ($p eq $currentpaper);
+ }
+ } else {
+ my $found = 0;
+ for my $p (keys %pdftex_papersize) {
+ if ($p eq $newpaper) {
+ $found = 1;
+ last;
+ }
+ }
+ if ($found) {
+ my $newwline =
+ '\pdfpagewidth=' . ${$pdftex_papersize{$newpaper}}[0] . "\n";
+ my $newhline =
+ '\pdfpageheight=' . ${$pdftex_papersize{$newpaper}}[1] . "\n";
+ if (defined($cpwidx)) {
+ $lines[$cpwidx] = $newwline;
+ } else {
+ if (defined($endinputidx)) {
+ $lines[$endinputidx] = $newwline . $lines[$endinputidx];
+ } else {
+ $lines[$#lines] = $newwline;
+ }
+ }
+ if (defined($cphidx)) {
+ $lines[$cphidx] = $newhline;
+ } else {
+ if (defined($endinputidx)) {
+ $lines[$endinputidx] = $newhline . $lines[$endinputidx];
+ } else {
+ $lines[$#lines] = $newwline;
+ }
+ }
+ for (@lines) { print; }
+ } else {
+ warn "Not a valid paper size for pdftex: $newpaper\n";
+ }
+ }
+ } else {
+ # just print the current value
+ print "current pdftex paper size: $currentpaper\n";
+ }
+}
+
+###############################################
+#
+# dvips config.ps format:
+# /--- config.ps ---
+# |...
+# |stuff not related to paper sizes
+# |...
+# | <empty line>
+# |% some comments
+# |% more comments
+# |@ <NAME> <WIDTH> <HEIGHT>
+# |@+ ...definition line
+# |@+ ...definition line
+# |... more definition lines
+# |@+ %%EndPaperSize
+# |
+# |@ <NAME> <WIDTH> <HEIGHT>
+# |...
+# \------------
+#
+# the first paper definition is the default
+# selecting paper is done like with texconfig which used ed to move the
+# selected part between @ $selected_paper .... @ /-1 (the line before the
+# next @ line) to the line before the first @ line.
+# (what a tricky ed invocation te created there, impressive!!!)
+#
+# Reading is done via --progname=dvips --format='dvips config' config.ps
+# Writing is done to TEXMFSYSCONFIG/dvips/config/config.ps
+#
+sub do_dvips {
+ my $newpaper = shift;
+ my $configps = `kpsewhich --progname=dvips --format='dvips config' config.ps`;
+ chomp($configps);
+ print "file used: $configps\n";
+
+ open(FOO, "<$configps") or die("cannot open file: $!");
+ my @lines = <FOO>;
+ close(FOO);
+
+ my @papersizes;
+ my $firstpaperidx;
+ my %startidx;
+ my %endidx;
+ my $in_block = "";
+ my $idx = 0;
+ for my $idx (0 .. $#lines) {
+ if ($lines[$idx] =~ m/^@ (\w+)/) {
+ $startidx{$1} = $idx;
+ $firstpaperidx || ($firstpaperidx = $idx-1);
+ $in_block = $1;
+ push @papersizes, $1;
+ next;
+ }
+ # empty lines or comments stop a block
+ if ($in_block) {
+ if ($lines[$idx] =~ m/^\s*(%.*)?\s*$/) {
+ $endidx{$in_block} = $idx-1;
+ $in_block = "";
+ }
+ next;
+ }
+ }
+
+ #for my $p (@papersizes) {
+ # print "papersize $p from idx $startidx{$p} to $endidx{$p}\n";
+ #}
+
+ if (defined($newpaper)) {
+ if ($newpaper eq "--list") {
+ for my $p (@papersizes) {
+ print "$p\n"; # first is already the selected one
+ }
+ } else {
+ my $found = 0;
+ for my $p (@papersizes) {
+ if ($p eq $newpaper) {
+ $found = 1;
+ last;
+ }
+ }
+ if ($found) {
+ my @newlines;
+ for my $idx (0..$#lines) {
+ if ($idx < $firstpaperidx) {
+ push @newlines, $lines[$idx];
+ next;
+ }
+ if ($idx == $firstpaperidx) {
+ # insert the selected paper definition
+ push @newlines, @lines[$startidx{$newpaper}..$endidx{$newpaper}];
+ push @newlines, $lines[$idx];
+ next;
+ }
+ if ($idx >= $startidx{$newpaper} && $idx <= $endidx{$newpaper}) {
+ next;
+ }
+ push @newlines, $lines[$idx];
+ }
+ # output should go to $texmfsysconfig/dvips/config/config.ps TODO TODO
+ for (@newlines) { print; }
+ } else {
+ warn "Not a valid paper size for dvips: $newpaper\n";
+ }
+ }
+ } else {
+ # just print the current value
+ print "current dvips paper size: $papersizes[0]\n";
+ }
+}
+
+#
+# context format:
+# /--- cont-sys.{tex,rme}
+# |...
+# |\setuppapersize[letter][letter]
+# |...
+# \------------
+#
+# Reading is done first via kpsewhich -prog=tex -format=tex cont-sys.tex
+# if that fails via -prog=tex -format='other text files' cont-sys.rme
+#
+# Writing is done to TEXMFSYSCONFIG/tex/context/user/cont-sys.tex
+#
+sub do_context {
+ my $newpaper = shift;
+ # TODO TODO
+ # we should check whether context is installed at all!!!!
+ my $inp = `kpsewhich --progname=tex --format=tex cont-sys.tex`;
+ chomp($inp);
+ if (!$inp) {
+ # we didn't get anything, so retry with .rme
+ $inp = `kpsewhich --progname=tex --format='other text files' cont-sys.rme`;
+ chomp($inp);
+ }
+ my @bla = keys %pdftex_papersize;
+ do_simple($inp, "context", '^\s*\\setuppapersize\s*',
+ '^\s*\\setuppapersize\s*\[([^][]*)\]',
+ sub {
+ my ($ll,$np) = @_;
+ if ($ll =~ m/^\s*\\setuppapersize\s*/) {
+ return("\\setuppapersize[$np][$np]\n");
+ } else {
+ return($ll);
+ }
+ }, "tex/context/user/cont-sys.rme", \@bla,
+ 'a4', '\setuppapersize[a4][a4]', $newpaper);
+}
+
+
+#
+# xdvi format:
+# /--- XDvi ---
+# |...
+# |*paper: <NAME>
+# |...
+# \------------
+#
+# Reading is done via --progname=xdvi --format='other text files' XDvi
+# Writing is done to TEXMFSYSCONFIG/xdvi/XDvi
+#
+sub do_xdvi {
+ my $newpaper = shift;
+ my $xdvi = `kpsewhich --progname=xdvi --format='other text files' XDvi`;
+ chomp($xdvi);
+ my @bla = keys %xdvi_papersize;
+ do_simple($xdvi, "xdvi", '^\*paper: ', '^\*paper:\s+(\w+)\s*$',
+ sub {
+ my ($ll,$np) = @_;
+ $ll =~ s/^\*paper:\s+(\w+)\s*$/\*paper: $np\n/;
+ return($ll);
+ }, "xdvi/XDvi", \@bla,
+ '(not defined)', '*paper: a4', $newpaper);
+}
+
+
+#
+# dvipdfm(x) format:
+# /--- dvipdfm/config, dvipdfmx/dvipdfmx.cfg ---
+# |...
+# |p <NAME>
+# |...
+# \------------
+#
+# Reading is done
+# for dvipdfm via --progname=dvipdfm --format='other text files' config
+# for dvipdfmx via --progname=dvipdfmx --format='other text files' dvipdfmx.cfg
+# Writing is done to TEXMFSYSCONFIG/dvipdfm/config/config
+# and /dvipdfmx/dvipdfmx.cfg
+#
+#
+sub do_dvipdfm_and_x {
+ my ($inp, $prog, $outp, $paplist, $newpaper) = @_;
+ do_simple($inp, $prog, '^p\s+', '^p\s+(\w+)\s*$',
+ sub {
+ my ($ll,$np) = @_;
+ $ll =~ s/^p\s+(\w+)\s*$/p $np\n/;
+ return($ll);
+ }, $outp, $paplist, '(not defined)', 'p a4', $newpaper);
+}
+
+sub do_dvipdfm {
+ my $newpaper = shift;
+ my $inp = `kpsewhich --progname=dvipdfm --format='other text files' config`;
+ chomp($inp);
+ my @bla = keys %dvipdfm_papersize;
+ do_dvipdfm_and_x($inp, "dvipdfm", "dvipdfm/config/config", \@bla, $newpaper);
+}
+sub do_dvipdfmx {
+ my $newpaper = shift;
+ my $inp = `kpsewhich --progname=dvipdfmx --format='other text files' dvipdfmx.cfg`;
+ chomp($inp);
+ my @bla = keys %dvipdfm_papersize;
+ do_dvipdfm_and_x($inp, "dvipdfmx", "dvipdfmx/dvipdfmx.cfg", \@bla, $newpaper);
+}
+
+
+
+#
+# do_simple does the work for single line config files
+# (xdvi, dvipdfm, dvipdfmx)
+# arguments:
+# $inp, $prog, $firstre, $secondre, $bl, $outp, $paplist, $newpaper
+# with
+# $inp .. input file location
+# $prog .. program name
+# $firstre .. re that searches for paper lines
+# $secondre .. re that extracts the paper from a paper line
+# $bl .. block/sub taking two args, one paper line and the new paper, and
+# returns the line with the paper configured, only lines mathing
+# $firstre are shipped over to $bl
+# $outp .. location of the output file
+# $paplist .. ref to an array with the list of admissible paper sizes
+# $defaultpaper .. default papersize (arbitrary string) if the $firstre is
+# not found in the config file
+# $defaultline .. the line to be added at the bottom of the file if
+# no line has been found
+# $newpaper .. --list, new paper, or undef
+sub do_simple {
+ my ($inp, $prog, $firstre, $secondre, $bl, $outp, $paplist, $defaultpaper, $defaultline, $newpaper) = @_;
+
+ print STDERR "file used for $prog: $inp\n";
+
+ open(FOO, "<$inp") or die("cannot open file: $!");
+ my @lines = <FOO>;
+ close(FOO);
+
+ my $currentpaper;
+ my @paperlines = grep (m/$firstre/,@lines);
+ if (!@paperlines) {
+ $currentpaper = $defaultpaper;
+ } else {
+ if ($#paperlines > 0) {
+ warn "Strange, more than one paper definiton, using the first one!\n";
+ }
+ $currentpaper = $paperlines[0];
+ chomp($currentpaper);
+ $currentpaper =~ s/$secondre/$1/;
+ }
+
+ # change value
+ if (defined($newpaper)) {
+ if ($newpaper eq "--list") {
+ print "$currentpaper\n";
+ for my $p (@$paplist) {
+ print "$p\n" unless ($p eq $currentpaper);
+ }
+ } else {
+ my $found = 0;
+ for my $p (@$paplist) {
+ if ($p eq $newpaper) {
+ $found = 1;
+ last;
+ }
+ }
+ if ($found) {
+ my @newlines;
+ my $foundcfg = 0;
+ for my $l (@lines) {
+ if ($l =~ m/$firstre/) {
+ push @newlines, &$bl($l, $newpaper);
+ $foundcfg = 1;
+ } else {
+ push @newlines, $l;
+ }
+ }
+ # what to do if no default line found???
+ if (!$foundcfg) {
+ push @newlines, &$bl($defaultline, $newpaper);
+ }
+ # should save to $outf
+ for (@newlines) { print; }
+ } else {
+ warn "Not a valid paper size for $prog: $newpaper\n";
+ }
+ }
+ } else {
+ # just return the current value
+ print "Current paper setting for $prog: $currentpaper\n";
+ }
+}
+
+
+### Local Variables:
+### perl-indent-level: 2
+### tab-width: 2
+### indent-tabs-mode: nil
+### End:
+# vim:set tabstop=2 expandtab: #