Just the fairy.

[dbsrgits/SQL-Translator.git] / bin / sqlt

#!/usr/bin/perl -w
# vim: set ft=perl:

# -------------------------------------------------------------------
# $Id: sqlt,v 1.12 2004-02-06 17:48:16 kycl4rk Exp $
# -------------------------------------------------------------------
# Copyright (C) 2002-4 SQLFairy Authors
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License as
# published by the Free Software Foundation; version 2.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
# 02111-1307  USA
# -------------------------------------------------------------------

=head1 NAME

sqlt - convert SQL schema using SQL::Translator

=head1 SYNOPSIS

For help:

  sqlt -h|--help

For a list of all parsers and producers: 

  sqlt -l|--list

To translate a schema:

  sqlt -f|--from|--parser MySQL 
       -t|--to|--producer Oracle 
       [options] 
       file [file2 ...]

  General Options:

    -d|--debug         Print debug info
    -v|--validate      Validate the schema
    --trace            Print parser trace info
    --show-warnings    Print warnings to STDERR

  DBI Parser Options:

    --dsn              DSN for connecting to database
    --db-user          Database user
    --db-password      Database password              

  xSV Parser Options:

    --fs               The field separator
    --rs               The record separator
    --no-trim          Don't trim whitespace on fields 
    --no-scan          Don't scan fields for data types and sizes 

  DB Producer Options:

    --add-drop-table   Add 'DROP TABLE' statements before creates
    --no-comments      Don't include comments in SQL output

  Diagram Producer Options:

    --imap-file        Filename to put image map data
    --imap-url         URL to use for image map

  HTML/POD Producer Options:

    --pretty           Use CGI::Pretty for the output
    --title            Title of schema

  TTSchema Producer Options:

    --template         The path to the template

  XML-SQLFairy Producer Options:

    --emit-empty-tags  Print empty tags for attributes
    --attrib-values    Use attributes instead of tags for 
                       values of the schema objects

=head1 DESCRIPTION

This script is part of the SQL Fairy project.  It will try to convert
any source file for which it has a grammar into any format for which
it has a producer.

If using "show-warnings," be sure to redirect STDERR to a separate file.  
In bash, you could do this:

    $ sql_translator.pl -f MySQL -t PostgreSQL --show-warnings \
       file.sql 1>out 2>err

You can specify a parser or producer located in any module that Perl
knows about, allowing you to easily substitute your own.

=cut

# -------------------------------------------------------------------

use strict;
use Getopt::Long;
use Pod::Usage;
use SQL::Translator;

use vars qw( $VERSION );
$VERSION = sprintf "%d.%02d", q$Revision: 1.12 $ =~ /(\d+)\.(\d+)/;

my $from;             # the original database
my $to;               # the destination database 
my $help;             # show POD and bail
my $stdin;            # whether to read STDIN for create script
my $no_comments;      # whether to put comments in out file
my $show_warnings;    # whether to show warnings from SQL::Translator
my $add_drop_table;   # whether to show warnings from SQL::Translator
my $debug;            # whether to print debug info
my $trace;            # whether to print parser trace
my $list;             # list all parsers and producers
my $no_trim;          # don't trim whitespace on xSV fields
my $no_scan;          # don't scan xSV fields for data types and sizes
my $field_separator;  # for xSV files
my $record_separator; # for xSV files
my $validate;         # whether to validate the parsed document
my $imap_file;        # filename where to place image map coords
my $imap_url;         # URL to use in making image map
my $pretty;           # use CGI::Pretty instead of CGI (HTML producer)
my $template;         # template to pass to TTSchema producer
my $title;            # title for HTML/POD producer
my $emit_empty_tags;  # show empty XML tags
my $attrib_values;    # use XML attributes instead of tags
my $dsn;              # DBI parser 
my $db_user;          # DBI parser 
my $db_password;      # DBI parser 

GetOptions(
    'add-drop-table'  => \$add_drop_table,
    'attrib-values'   => \$attrib_values,
    'd|debug'         => \$debug,
    'emit-empty-tags' => \$emit_empty_tags,
    'f|from|parser:s' => \$from,
    'fs:s'            => \$field_separator,
    'h|help'          => \$help,
    'imap-file:s'     => \$imap_file,
    'imap-url:s'      => \$imap_url,
    't|to|producer:s' => \$to,
    'l|list'          => \$list,
    'pretty!'         => \$pretty,
    'no-comments'     => \$no_comments,
    'no-scan'         => \$no_scan,
    'no-trim'         => \$no_trim,
    'rs:s'            => \$record_separator,
    'show-warnings'   => \$show_warnings,
    'template:s'      => \$template,
    'title:s'         => \$title,
    'trace'           => \$trace,
    'v|validate'      => \$validate,
    'dsn:s'           => \$dsn,
    'db-user:s'       => \$db_user,
    'db-password:s'   => \$db_password,
) or pod2usage(2);

my @files = @ARGV; # source files
unless ( @files ) {
    if ( defined($from) && $from eq 'DBI' ) {
        @files = ('!');
    }
    else {
        @files = ('-');
    }
}

pod2usage(1) if $help;

my $translator           =  SQL::Translator->new( 
    debug                => $debug          ||  0,
    trace                => $trace          ||  0,
    no_comments          => $no_comments    ||  0,
    show_warnings        => $show_warnings  ||  0,
    add_drop_table       => $add_drop_table ||  0,
    validate             => $validate       ||  0,
    parser_args          => {
        trim_fields      => $no_trim ? 0 : 1,
        scan_fields      => $no_scan ? 0 : 1,
        field_separator  => $field_separator,
        record_separator => $record_separator,
        dsn              => $dsn,
        db_user          => $db_user,
        db_password      => $db_password,
    },
    producer_args   => {
        imap_file        => $imap_file,
        imap_url         => $imap_url,
        pretty           => $pretty,
        ttfile           => $template,
        title            => $title,
        emit_empty_tags  => $emit_empty_tags,
        attrib_values    => $attrib_values,
    },
);

if ( $list ) {
    my @parsers   = $translator->list_parsers;
    my @producers = $translator->list_producers;

    for ( @parsers, @producers ) {
        if ( $_ =~ m/.+::(\w+)\.pm/ ) {
            $_ = $1;
        }
    }
    
    print "\nParsers:\n",   map { "\t$_\n" } sort @parsers;
    print "\nProducers:\n", map { "\t$_\n" } sort @producers;
    print "\n";
    exit(0);
}

pod2usage( msg => 'Please supply "from" and "to" arguments' ) 
    unless $from && $to;

$translator->parser($from);
$translator->producer($to);

for my $file (@files) {
    my @args = 
        ($file eq '-') ? (data => \*STDIN) :
        ($file eq '!') ? (data => '') :
        (file => $file);

    my $output = $translator->translate(@args) or die
        "Error: " . $translator->error;

    print $output;
}

# ----------------------------------------------------
# It is not all books that are as dull as their readers.
# Henry David Thoreau
# ----------------------------------------------------

=pod

=head1 AUTHOR

Ken Y. Clark E<lt>kclark@cpan.orgE<gt>,
darren chamberlain E<lt>darren@cpan.orgE<gt>.

=head1 SEE ALSO

SQL::Translator, L<http://sqlfairy.sourceforge.net>.

=cut