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# This file belongs to TLPM v2.20, TeX Live Package Manager
# Public Domain, P.Jackowski@gust.org.pl
# cmdline parsing
# Since I can't rely on windows shell behaviour, I make all the parsing
# on my own. Some day I'd like to use native shell for u*x, though.
sub resolve_env # resolve environment variables
{
my $str = \$_[0];
while($$str =~ s/$reg_envvar/$ENV{$1}/){}
}
*OUT;
*LOG;
$tlpm_output = undef;
$reg_redir = qr/(>>?|\|)\s*(.+?)\s*\z/;
sub set_out
{
my $str = \$_[0];
if($$str =~ s/$reg_redir//)
{
$tlpm_output = $2;
if($1 eq '|')
{
$tlpm_redir = 2;
}
else
{
$tlpm_redir = 1;
&norm_path($tlpm_output);
# $tlpm_output = &rel2abs($tlpm_output,$curr_dir);
}
$tlpm_output = $1 . $tlpm_output;
}
else
{
$tlpm_redir = 0;
}
}
sub open_out
{
if(defined $tlpm_output)
{
if(open(OUT,$tlpm_output))
{
select OUT;
}
else
{
&close_out;
return $error{'wrong_out'} -> ($tlpm_output);
}
}
}
sub close_out
{
close OUT;
$tlpm_output = undef;
select STDOUT;
}
sub open_log
{
my $log = $tl_target . $tlpm_log;
if(open(LOG,">>$log"))
{
printf LOG ($row_fmt . "%s\n" , $message_prefix . $tlpm_prompt . $cmd_line , "[" . &date . "]");
&talk2log();
return(0);
}
else
{
&undef_target();
return $error{'wrong_out'} -> ($log);
}
}
sub close_log
{
printf LOG ($row_fmt . "%s\n" , $message_prefix . "done" , "[" . &date . "]");
close LOG;
¬2log();
}
$reg_white = qr/\A\s+|\A=/;
$reg_dquot = qr/\A\"(.*?)\"/;
$reg_squot = qr/\A\'(.*?)\'/;
$reg_param = qr/\A([^-]\S*)/;
$reg_sopts = qr/\A[-](\w+)/;
$reg_dopts = qr/\A[-]{2}(\w+)/;
sub parse_cmd
{
my $str = shift;
my (@opt,@opts);
while($str ne '')
{
$str =~ s/$reg_white// and next
or $str =~ s/$reg_squot// and push(@opt,"$1")
or $str =~ s/$reg_dquot// and push(@opt,"$1")
or $str =~ s/$reg_param// and push(@opt,"$1")
or $str =~ s/$reg_dopts// and push(@opt,"$opt_prefix$1")
or $str =~ s/$reg_sopts// and @opt = (@opt,map {"$opt_prefix$_"} split('',$1))
or $error{'wrong_syn'} -> ($str) and return();
}
while(defined($str = shift @opt))
{
push(@opts,$str);
if($str =~ /$reg_option/ && $opt[0] =~ /$reg_option/)
{
push(@opts,'');
}
}
return @opts;
}
sub is_opt
{
my $arg = shift;
my $reg;
foreach(@_)
{
$reg = qr/$_\z/;
return $true if $arg =~ /$reg_option$reg/;
}
return $false;
}
sub no_opt
{
return ($_[0] =~ /$reg_option/ ? $false : $true);
}
sub rem_opt
{
map {s/$reg_option//} @_;
}
$opt_prefix = 'opt:';
$reg_option = qr/\A$opt_prefix/o;
1;
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