path: root/utils/cli/ledgersmb_cli.pl

#!/usr/bin/perl
#===========================================================================
#
# LedgerSMB Command-line script host
#
#
# LedgerSMB 
# Small Medium Business Accounting software
# http://www.ledgersmb.org/
# 
#
# Copyright (C) 2006
# This work contains copyrighted information from a number of sources all used
# with permission.  It is released under the GNU General Public License 
# Version 2 or, at your option, any later version.  See COPYRIGHT file for 
# details.
#
# This is a simple wrapper that allows you to write simple scripts with LSMB
# See sample for the file format.
#
# THIS IS EXPERIMENTAL AND THE INTERFACE IS SUBJECT TO CHANGE

use Parse::RecDescent;
use LedgerSMB::User;
use LedgerSMB::Form;
use LedgerSMB::Sysconfig;

$form = new Form;

$syntax = << '_END_SYNTAX_';

    KEY : /\w[a-z0-9_]*/i
    MODSTR : /\w[a-z0-9_:]*/i
    FNKEY : /(?:\w|:|\-\>)+/
    OP       : m([-+*/%])
    NUMBER : /[+-]?\d*\.?\d+/

    ARGS : /(\w[a-z0-9_]*,?\s?)+/i 

    expression : NUMBER OP expression
              { return main::expression(@item) }
              | KEY OP expression
              { return main::expression(@item) }
              | NUMBER
              | KEY

    assign_instruction : KEY "=" expression
        { main::assignval($item{KEY}, $item{expression}) }

    call_and_assign : /call/i FNKEY '(' ARGS ')' /into/i KEY
        { main::call_and_assign($item{FNKEY}, $item{ARGSTR}, $item{KEY}) }  

    FUNCTIONCALL : /call/i FNKEY '(' ARGS ')'
        { main::call($item{FNKEY}, $item{ARGS});}

    for : /for/i KEY
        { main::push_loop($item{KEY}) }

    done : /^\s*done\s*$/
        { main::pop_loop() }

    if : /^\s*if/i KEY
        { main::if_handler($item{KEY}) }

    # IF is terminated by END IF or FI on its own line

    login : /login/i
        { main::login() }

    module : /module/i MODSTR
        { main::load_mod($item{MODSTR}) }

    instruction : assign_instruction
        | call_and_assign
        | FUNCTIONCALL
        | for
        | done
        | if
        | login
        | module

    startrule : instruction

_END_SYNTAX_
 $::RD_HINT = 1;
 $::RD_ERRORS = 1; # Make sure the parser dies when it encounters an error
 $::RD_WARN   = 1; # Enable warnings. This will warn on unused rules &c.`
#$::RD_TRACE = 1;
my $stackref;
my @loopstack;

push @loopstack, $form;

sub assignval {
    my ($key, $value) = @_;
    if ($key =~ /^ENV:/i){
        $ENV{$key} = $value;
    } else {
        %{$loopstack[$#loopstack - 1]}->{$key} = $value;
    }
}

sub expression {
    shift;
    my ($lhs,$op,$rhs) = @_;
    $lhs = $VARIABLE{$lhs} if $lhs=~/[^-+0-9]/;
    return eval "$lhs $op $rhs";
}

sub call {
    my ($call, $argstr) = @_;
    $argstr =~ s/form/\\\%\$form/;
    $argstr =~ s/user/\\\%myconfig/;
    my @args = split /,\s/, $argstr;
    eval "$call($argstr);\n" || print STDERR $@ . "\n";
}

sub call_and_assign {
    my $key = pop;
    $stackref->{key} = call(@_);
}

sub push_loop {
    my $key = shift;
    push @loopstack, \$stackref->{$key};
    $stackref = \$loopstack[$#loopstack];
}

sub pop_loop {
    pop @loopstack;
    $stackref = \$loopstack[$#loopstack];
}

sub if_handler {
    my $key = shift;
    if (!$stackref->{$key}){
        while ($line !~ /^(\s*FI\s*|\s*END\s+IF\s*)$/ ){
            $line = <>;
        }
    }
}

sub login {
    $myconfig = new LedgerSMB::User 
        "${LedgerSMB::Sysconfig::memberfile}", "$form->{login}";
    $form->db_init($myconfig);
}

sub load_mod {
    my $mod = shift;
    $mod =~ s/::/\//;
    require "$mod.pm";;
}

my $scriptparse = new Parse::RecDescent($syntax);

while ($line = <>){
    $line =~ s/#.*$//; # strip comments
    $scriptparse->startrule($line);
}

delete $form->{password};

for (keys %$form){
    print "$_ = $form->{$_}\n";
}