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#! /usr/local/bin/perl -w
###############################################################################
# $Id: build.pl,v 1.6 2002/04/10 00:29:48 RRM Exp $
#
# build.pl
#
# Preprocesses perl scripts. Reads l2hcfg.pm and one operating system
# specific module (containing OS specific subroutines) and uses this
# information to modify the script given on the command line. Reads
# <script>.pin (perl-in) and writes <script>. See below for the
# preprocessor syntax.
#
# Author: Marek Rouchal <marek@saftsack.fs.uni-bayreuth.de>
#
# This software is part of LaTeX2HTML, originally by Nikos Drakos
# It is published under the GNU Public License and comes without any
# warranty.
#
###############################################################################
# Changes History
#
# $Log: build.pl,v $
# Revision 1.6 2002/04/10 00:29:48 RRM
# -- fixed spelling error in a comment :-)
#
# Revision 1.5 1999/10/25 21:18:22 MRO
#
# -- added more configure options (Jens' suggestions)
# -- fixed bug in regexp range reported by Achim Haertel
# -- fixed old references in documentation (related to mail list/archive)
#
# Revision 1.4 1999/09/07 22:00:25 MRO
#
# -- added option -devel to build.pl and BUILDOPT macro to Makefile
#
# Revision 1.3 1999/08/30 22:45:09 MRO
#
# -- perl now reports line numbers respective to .pin file - eases
# code development!
# -- l2hcfg.pm is installed, too for further reference
# -- some minor bugs (hopefully) fixed.
#
# Revision 1.2 1999/05/31 07:49:12 MRO
#
#
# - a lot of cleanups wrt. OS/2
# - make test now available (TEST.BAT on Win32, TEST.CMD on OS/2)
# - re-inserted L2HCONFIG environment
# - added some new subs to L2hos (path2os, path2URL, Cwd)
#
# Revision 1.1 1999/05/11 06:10:02 MRO
#
#
# - merged config stuff, did first tries on Linux. Simple document
# passes! More test required, have to ger rid of Warnings in texexpand
#
# Revision 1.15 1999/05/05 19:47:10 MRO
#
#
# - many cosmetic changes
# - final backup before merge
#
# Revision 1.14 1999/04/10 12:03:33 MRO
#
#
# - enabled use of different suffixes
#
# Revision 1.13 1999/02/23 23:32:32 MRO
#
#
# -- few changes for Win32
#
# Revision 1.12 1998/12/12 16:39:15 MRO
#
#
# -- cosmetic changes, reworked catching of STDERR in config.pl (Win32)
# -- new configure opt --disable-paths
# -- major cleanups
#
# Revision 1.11 1998/10/31 14:13:07 MRO
# -- changed OS-dependent module loading strategy: Modules are now located in
# different (OS-specific) directories nut have the same name: Easier to
# maintain and cleaner code
# -- Cleaned up config procedure
# -- Extended makefile functionality
#
# Revision 1.10 1998/08/09 17:58:18 MRO
# -- save update
#
# Revision 1.9 1998/07/07 21:55:08 MRO
# -- enabled warpper and texlive build
#
# Revision 1.8 1998/07/01 19:34:59 MRO
# -- added more wrapper templates, updated config.pl and pertially build.pl
#
# Revision 1.7 1998/06/14 14:10:40 latex2html
# -- Started to implement TeXlive configuration and better OS specific
# handling (Batch files) (Marek)
#
# Revision 1.6 1998/06/01 12:57:58 latex2html
# -- Cleanup and cosmetics.
#
# Revision 1.5 1998/05/06 22:31:13 latex2html
# -- Enhancements to the config procedure: Added a "generic" target
# in the Makefile for the TeXlive CD (not perfect yet)
# -- included test for kpsewhich / Web2C
# -- included latest stuff from Override.pm into os_*.pm
#
# Revision 1.4 1998/04/28 22:21:27 latex2html
# - The platform specific stuff is now kept in a separate perl module. This
# does not introduce significant overhead and enhances maintainability.
#
# Revision 1.3 1998/03/19 23:38:09 latex2html
# -- made pstoimg plug-in compatible with old one (touchwood!)
# -- cleaned up, added some comments
# -- inserted version information output
# -- incorporated patches to make OS/2 run better (thanks Uli)
# -- updated Makefile: make, make test, make install should work now
#
# Revision 1.2 1998/03/02 23:38:42 latex2html
# Reworked configuration procedure substantially. Fixed some killing bugs.
# Should now run on Win32, too.
# The file prefs.pm contains user-configurable stuff for DOS platforms.
# UNIX users can override the settings with the configure utility (preferred).
#
# Revision 1.1 1998/02/14 19:31:56 latex2html
# Preliminary checkin of configuration procedure
#
###############################################################################
require 5.003;
use strict;
# use diagnostics;
use vars qw(%os_cfg %cfg);
use Getopt::Long;
my ($VERSION) = q$Revision: 1.6 $ =~ /:\s*(\S*)/;
# --------------------------------------------------------------------------
# Initialize
# --------------------------------------------------------------------------
# Read in the system's configuration
use cfgcache;
my $dd = $cfg{'dd'};
my $plat = $cfg{'plat'};
my $BINDIR = 'bin';
# for TeXlive we need them all
my %plat_ext = (
'dos' => '.bat',
'win32' => '.bat',
'os2' => '.cmd',
'macos' => '.bat',
'unix' => '');
print "build.pl (Revision $VERSION)\n";
# --------------------------------------------------------------------------
# Parse command line
# --------------------------------------------------------------------------
my %opt = ();
unless(GetOptions(\%opt, qw(executable|x suffix=s devel))) {
die "$0: Error: Illegal option(s) specified.\n";
}
my $script = shift(@ARGV);
my $is_executable = $opt{executable};
unless($script) {
die "$0: Error: No script specified\n";
}
if($script =~ /pstoimg/ && !$cfg{'have_pstoimg'}) {
print "$0: Warning: Skipping build of $script because of missing external programs.\n";
exit 0;
}
# --------------------------------------------------------------------------
# Go!
# --------------------------------------------------------------------------
# Treat executables specially
my $add_header_footer = 0;
my $output = $script;
if($is_executable) {
if($cfg{'texlive'}) {
my @platlist = keys %plat_ext;
$output .= '.pl';
&build($script,$output,0,1);
my $plat;
foreach $plat (@platlist) {
&make_bin_dir($plat);
&build("wrapper$dd$plat","$BINDIR$dd$plat$dd$script$plat_ext{$plat}",0,1);
}
}
elsif($cfg{'wrapper'}) { # create one wrapper
$output .= '.pl';
&build($script,$output,0,1);
&make_bin_dir();
&build("wrapper$dd$plat","$BINDIR$dd$script$plat_ext{$plat}",0,1);
}
else { # normal executable
if($cfg{'PERLHEADER'}) {
$add_header_footer = 1;
}
$output .= ($cfg{'exec_extension'} || '');
&build($script,$output,$add_header_footer,1);
}
}
elsif($opt{suffix}) {
$script =~ s:\.pin$::;
&build($script,"$script$opt{suffix})",0);
}
else {
$script =~ s:\..*$::;
&build($script,$output,0);
}
exit 0;
sub build {
my ($script,$output,$add_header_footer,$executable) = @_;
print qq{Building "$output" from "$script.pin"\n};
my @stack = ();
my $do_include = 1;
unless(open(IN,"<$script.pin")) {
print "$0: Error: Cannot read $script.pin: $!\n";
exit 1;
}
if(-e $output) {
if(-e "$script.bak") {
unless(unlink("$script.bak")) {
print qq{$0: Error: Cannot unlink "$script.bak": $!\n};
exit 1;
}
}
unless(rename($output,"$script.bak")) {
print qq{$0: Error: Cannot rename existing "$output" to "$script.bak": $!\n};
exit 1;
}
}
unless(open(OUT,">$output")) {
print "$0: Error: Cannot write $script: $!\n";
exit 1;
}
# Treat executables specially: Add perl starter
if($add_header_footer) {
# BAD HACK AHEAD! Warnings should always be turned on!!
my $head = $cfg{'PERLHEADER'} || '';
if($script =~ /^latex2html/) {
$head =~ s/ -w//;
}
print OUT $head;
}
my $sourcefilename = "$script.pin";
$sourcefilename =~ s:^.*[\\/$dd$dd]::; # strip path
print OUT qq{# line 1 "$sourcefilename"\n} if($opt{devel});
# Do the preprocessing: Look for:
# #if <perlexpression>
# #unless <perlexpresion>
# #else
# #fi
# The <perlexpression> may contain configuration variables as @var@,
# e.g. #if @GSDEVICE@ eq 'ppmraw'
# #- comment to be deleted
#
# @var@
# All such occurences will be replaced with the configuration
# variable var
my $have_line = 0;
while(defined($_ = <IN>)) {
if( /^\s*#(if|unless)\s+([^#\n]+)/ ) {
$have_line = $.;
my $true = ($1 eq 'if');
my $cond = $2;
$cond =~ s/@(\w+)@/\$cfg{'$1'}/g;
push @stack,$do_include;
# print "debug: evalling +$cond+ ... ";
my $result = eval $cond;
if($@) {
print qq{$0: Error: Conditional expression "$cond" failed in "$script.pin" line $.: $@\n};
exit 1;
}
# print "-$result-\n";
if($do_include && $do_include ne 'void') {
$do_include = $result ? $true : !$true;
}
else {
$do_include = 'void';
}
}
elsif( /^\s*#else\b/ && $do_include ne 'void' ) {
$have_line = $.;
unless(@stack) {
print "$0: Error: Hierarchy error at #else in $script.pin line $.\n";
exit 1;
}
$do_include = !$do_include;
}
elsif( /^\s*#fi\b/ ) {
$have_line = $.;
unless(@stack) {
print "$0: Error: Hierarchy error at #fi in $script.pin line $.\n";
exit 1;
}
$do_include = pop @stack;
}
elsif( /^\s*#-/ ) {
$have_line = $.;
next;
}
elsif( $do_include && $do_include ne 'void' ) {
if($have_line) {
print OUT "# line " . ($have_line + 1) . qq{ "$sourcefilename"\n}
if($opt{devel});
$have_line = 0;
}
s#@(\w+)@#my $a = defined $cfg{$1} ? $cfg{$1} : ''; $a =~ s/\\/\\\\/g unless($1 eq 'PERL'); $a#ge;
print OUT;
}
}
if($add_header_footer) {
print OUT $cfg{'PERLFOOTER'};
}
close(IN);
close(OUT);
if(@stack) {
# print "Stack: ",join(',',@stack),"\n";
print "$0: Error: Hierarchy error in $script.pin at EOF\n";
exit 1;
}
# set execute permissions on unix
if($executable) {
eval { chmod 0755, $output };
if($@) {
print "Warning: $@\n";
}
}
}
sub make_bin_dir {
my @plats = @_;
unless(-d $BINDIR) {
unless(mkdir($BINDIR,0755)) {
print qq{Error: Could not create directory "$BINDIR": $!\n};
return 0;
}
}
if(@plats) {
my $p;
foreach $p (@plats) {
my $platbindir = "$BINDIR$dd$p";
unless(-d $platbindir) {
unless(mkdir($platbindir,0755)) {
print qq{Error: Could not create directory "$platbindir": $!\n};
return 0;
}
}
}
}
1;
}
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