658 lines
19 KiB
Perl
Executable File
658 lines
19 KiB
Perl
Executable File
#!/usr/bin/env perl
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#===============================================================================
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#
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# FILE: convert_latin1
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#
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# USAGE: ./convert_latin1 [-help] [-doc] [-config=FILE] [-debug=N]
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#
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# DESCRIPTION: Find and convert 'latin1' characters to 'utf8' in the HPR
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# database
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#
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# OPTIONS: ---
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# REQUIREMENTS: ---
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# BUGS: ---
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# NOTES: ---
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# AUTHOR: Dave Morriss (djm), Dave.Morriss@gmail.com
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# VERSION: 0.1.2
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# CREATED: 2023-05-04 10:07:04
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# REVISION: 2023-05-08 12:15:49
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#
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#===============================================================================
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use v5.16;
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use strict;
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use warnings;
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#use utf8;
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# Using experimental features, some of which require warnings to be turned off
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use feature qw{ postderef say signatures state try };
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no warnings qw{
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experimental::postderef
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experimental::signatures
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experimental::try
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};
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use Getopt::Long;
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use Pod::Usage;
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use Config::General;
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#use Encode qw( encode decode is_utf8 );
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#use Try::Tiny;
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#use TryCatch;
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use SQL::Abstract;
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use DBI;
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use Log::Handler;
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use Log::Handler::Output::File;
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use Data::Dumper;
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#
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# Version number (manually incremented)
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#
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our $VERSION = '0.1.2';
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#
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# Script and directory names
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#
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( my $PROG = $0 ) =~ s|.*/||mx;
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( my $DIR = $0 ) =~ s|/?[^/]*$||mx;
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$DIR = '.' unless $DIR;
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#-------------------------------------------------------------------------------
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# Declarations
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#-------------------------------------------------------------------------------
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#
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# Constants and other declarations
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#
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my $basedir = "$ENV{HOME}/HPR/Database";
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my $configfile = "$basedir/.hpr_db.cfg";
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my $logfile = "$basedir/${PROG}.log";
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my ( $dbh, $sth1, $sth2, $h1 );
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my ( $sql, $utf8, $viewed );
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#
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# Map of latin1 characters with their Unicode equivalents {{{
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#
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# Commented out 2023-05-10 since no longer wanted
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#
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#my %map_latin1 = (
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# q{€â‚¬} => "\N{U+20AC}",
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# q{ÀÀ} => "\N{U+00C0}",
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# q{ÁÃ} => "\N{U+00C1}",
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# q{‚‚} => "\N{U+201A}",
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# q{ÂÂ} => "\N{U+00C2}",
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# q{ƒÆ’} => "\N{U+0192}",
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# q{ÃÃ} => "\N{U+00C3}",
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# q{„„} => "\N{U+201E}",
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# q{ÄÄ} => "\N{U+00C4}",
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# q{……} => "\N{U+2026}",
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# q{ÅÃ…} => "\N{U+00C5}",
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# q{†â€} => "\N{U+2020}",
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# q{ÆÆ} => "\N{U+00C6}",
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# q{‡â€¡} => "\N{U+2021}",
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# q{ÇÇ} => "\N{U+00C7}",
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# q{ˆË†} => "\N{U+02C6}",
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# q{ÈÈ} => "\N{U+00C8}",
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# q{‰â€°} => "\N{U+2030}",
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# q{ÉÉ} => "\N{U+00C9}",
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# q{ŠÅ} => "\N{U+0160}",
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# q{ÊÊ} => "\N{U+00CA}",
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# q{‹â€¹} => "\N{U+2039}",
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# q{ËË} => "\N{U+00CB}",
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# q{ŒÅ’} => "\N{U+0152}",
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# q{ÌÃŒ} => "\N{U+00CC}",
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# q{ÍÃ} => "\N{U+00CD}",
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# q{ŽÅ½} => "\N{U+017D}",
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# q{ÎÃŽ} => "\N{U+00CE}",
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# q{ÏÃ} => "\N{U+00CF}",
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# q{ÐÃ} => "\N{U+00D0}",
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# q{‘‘} => "\N{U+2018}",
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# q{ÑÑ} => "\N{U+00D1}",
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# q{Չ۪} => "\N{U+2019}",
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# q{ÒÃ’} => "\N{U+00D2}",
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# q{““} => "\N{U+201C}",
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# q{ÓÓ} => "\N{U+00D3}",
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# q{”â€} => "\N{U+201D}",
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# q{ÔÔ} => "\N{U+00D4}",
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# q{•â€¢} => "\N{U+2022}",
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# q{ÕÕ} => "\N{U+00D5}",
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# q{––} => "\N{U+2013}",
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# q{ÖÖ} => "\N{U+00D6}",
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# q{——} => "\N{U+2014}",
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# q{××} => "\N{U+00D7}",
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# q{˜Ëœ} => "\N{U+02DC}",
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# q{ØØ} => "\N{U+00D8}",
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# q{™â„¢} => "\N{U+2122}",
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# q{ÙÙ} => "\N{U+00D9}",
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# q{šÅ¡} => "\N{U+0161}",
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# q{ÚÚ} => "\N{U+00DA}",
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# q{݉ۼ} => "\N{U+203A}",
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# q{ÛÛ} => "\N{U+00DB}",
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# q{œÅ“} => "\N{U+0153}",
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# q{ÜÃœ} => "\N{U+00DC}",
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# q{ÝÃ} => "\N{U+00DD}",
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# q{žÅ¾} => "\N{U+017E}",
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# q{ÞÞ} => "\N{U+00DE}",
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# q{ŸÅ¸} => "\N{U+0178}",
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# q{ßß} => "\N{U+00DF}",
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# q{Â} => "\N{U+00A0}",
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# q{àÃ} => "\N{U+00E0}",
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# q{¡Â¡} => "\N{U+00A1}",
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# q{áá} => "\N{U+00E1}",
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# q{¢Â¢} => "\N{U+00A2}",
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# q{ââ} => "\N{U+00E2}",
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# q{£Â£} => "\N{U+00A3}",
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# q{ãã} => "\N{U+00E3}",
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# q{¤Â¤} => "\N{U+00A4}",
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# q{ää} => "\N{U+00E4}",
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# q{¥Â¥} => "\N{U+00A5}",
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# q{åÃ¥} => "\N{U+00E5}",
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# q{¦Â¦} => "\N{U+00A6}",
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# q{ææ} => "\N{U+00E6}",
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# q{§Â§} => "\N{U+00A7}",
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# q{çç} => "\N{U+00E7}",
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# q{¨Â¨} => "\N{U+00A8}",
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# q{èè} => "\N{U+00E8}",
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# q{©Â©} => "\N{U+00A9}",
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# q{éé} => "\N{U+00E9}",
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# q{ªÂª} => "\N{U+00AA}",
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# q{êê} => "\N{U+00EA}",
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# q{«Â«} => "\N{U+00AB}",
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# q{ëë} => "\N{U+00EB}",
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# q{¬Â¬} => "\N{U+00AC}",
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# q{ìì} => "\N{U+00EC}",
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# q{Â} => "\N{U+00AD}",
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# q{íÃ} => "\N{U+00ED}",
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# q{®Â®} => "\N{U+00AE}",
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# q{îî} => "\N{U+00EE}",
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# q{¯Â¯} => "\N{U+00AF}",
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# q{ïï} => "\N{U+00EF}",
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# q{°Â°} => "\N{U+00B0}",
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# q{ðð} => "\N{U+00F0}",
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# q{±Â±} => "\N{U+00B1}",
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# q{ññ} => "\N{U+00F1}",
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# q{²Â²} => "\N{U+00B2}",
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# q{òò} => "\N{U+00F2}",
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# q{³Â³} => "\N{U+00B3}",
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# q{óó} => "\N{U+00F3}",
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# q{´Â´} => "\N{U+00B4}",
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# q{ôô} => "\N{U+00F4}",
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# q{µÂµ} => "\N{U+00B5}",
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# q{õõ} => "\N{U+00F5}",
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# q{¶Â¶} => "\N{U+00B6}",
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# q{öö} => "\N{U+00F6}",
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# q{·Â·} => "\N{U+00B7}",
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# q{÷÷} => "\N{U+00F7}",
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# q{¸Â¸} => "\N{U+00B8}",
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# q{øø} => "\N{U+00F8}",
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# q{¹Â¹} => "\N{U+00B9}",
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# q{ùù} => "\N{U+00F9}",
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# q{ºÂº} => "\N{U+00BA}",
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# q{úú} => "\N{U+00FA}",
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# q{»Â»} => "\N{U+00BB}",
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# q{ûû} => "\N{U+00FB}",
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# q{¼Â¼} => "\N{U+00BC}",
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# q{üü} => "\N{U+00FC}",
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# q{½Â½} => "\N{U+00BD}",
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# q{ýý} => "\N{U+00FD}",
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# q{¾Â¾} => "\N{U+00BE}",
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# q{þþ} => "\N{U+00FE}",
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# q{¿Â¿} => "\N{U+00BF}",
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# q{ÿÿ} => "\N{U+00FF}",
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#);
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#
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# Build a regex from all of the hash keys
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#
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#my $regex = join('|',sort(keys(%map_latin1)));
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#$regex=qr{$regex};
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#}}}
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#
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# Enable Unicode output mode
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#
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binmode STDOUT, ":encoding(UTF-8)";
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binmode STDERR, ":encoding(UTF-8)";
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#-------------------------------------------------------------------------------
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# Options and arguments {{{
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#-------------------------------------------------------------------------------
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#
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# Process options
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#
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my %options;
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Options( \%options );
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#
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# Default help
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#
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pod2usage( -msg => "$PROG version $VERSION\n", -exitval => 1 )
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if ( $options{'help'} );
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#
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# Full documentation if requested with -doc
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#
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pod2usage( -msg => "$PROG version $VERSION\n", -verbose => 2, -exitval => 1 )
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if ( $options{'doc'} );
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#
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# Collect options
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#
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my $cfgfile
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= ( defined( $options{config} ) ? $options{config} : $configfile );
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my $dry_run = ( defined( $options{'dry-run'} ) ? $options{'dry-run'} : 0 );
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my $verbose = ( defined( $options{verbose} ) ? $options{verbose} : 0 );
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my $field = $options{field};
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my $skip = $options{skip} // 0;
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my $limit = $options{limit} // 0;
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# }}}
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#
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# Sanity checks
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#
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die "Unable to find $cfgfile\n" unless ( -e $cfgfile );
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if ($field) {
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$field = lc($field);
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die "Invalid value for -field=FIELD\n"
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unless ( $field =~ /title|summary|tags|notes/ );
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}
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else {
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$field = 'title';
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}
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#-------------------------------------------------------------------------------
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# Load configuration data
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#-------------------------------------------------------------------------------
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my $conf = new Config::General(
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-ConfigFile => $cfgfile,
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-InterPolateVars => 1,
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-ExtendedAccess => 1
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);
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my %config = $conf->getall();
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#-------------------------------------------------------------------------------
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# Connect to the database
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#-------------------------------------------------------------------------------
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my $dbhost = $config{database}->{host} // '127.0.0.1';
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my $dbport = $config{database}->{port} // 3306;
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my $dbname = $config{database}->{name};
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my $dbuser = $config{database}->{user};
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my $dbpwd = $config{database}->{password};
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$dbh = DBI->connect( "dbi:mysql:host=$dbhost;port=$dbport;database=$dbname",
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$dbuser, $dbpwd, { AutoCommit => 1 } )
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or die $DBI::errstr;
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#
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# Enable client-side UTF8
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#
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$dbh->{mysql_enable_utf8} = 1;
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#-------------------------------------------------------------------------------
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# Set up logging keeping the default log layout except for the date
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#-------------------------------------------------------------------------------
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my $log = Log::Handler->new();
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$log->add(
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file => {
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timeformat => "%Y-%m-%d %H:%M:%S",
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filename => $logfile,
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maxlevel => 7,
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minlevel => 0,
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utf8 => 1,
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}
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);
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#
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# Log the settings being used
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#
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$log->info("---- Running version $VERSION");
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$log->info("Configuration file $cfgfile");
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$log->info("Processing field '$field'");
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$log->info("Skipping $skip non-ASCII rows") if $skip;
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$log->info("Update limit is $limit") if $limit;
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$log->info("Dry-run mode") if ($dry_run);
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#
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# Adjust limit
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#
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$limit += $skip if $skip;
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#-------------------------------------------------------------------------------
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# Perform a scan of episodes for the chosen field which contains non-ASCII
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#-------------------------------------------------------------------------------
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$sql = sprintf(
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q{SELECT id,%s FROM eps WHERE %s <> CONVERT(%s USING ASCII) ORDER BY id},
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$field, $field, $field
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);
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$sth1 = $dbh->prepare($sql) or die $DBI::errstr;
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$sth1->execute;
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if ( $dbh->err ) {
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warn $dbh->errstr;
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}
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#
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# Prepare SQL::Abstract and the SQL template for the updates
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#
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my $sqla = SQL::Abstract->new;
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my $stmt1 = sprintf(
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q{UPDATE eps SET %s = CONVERT(BINARY CONVERT(%s USING latin1) USING utf8)},
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$field, $field
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);
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#-------------------------------------------------------------------------------
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# Loop through what we get from the main query, attempting to convert each field
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#-------------------------------------------------------------------------------
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$viewed = 0;
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while ( $h1 = $sth1->fetchrow_hashref ) {
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$viewed++;
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next if $viewed <= $skip;
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#
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# Prepare the 'WHERE' part of the SQL
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#
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my %where = ( id => $h1->{id} );
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my ( $stmt2, @bind ) = $sqla->where( \%where );
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my $stmt = "${stmt1}${stmt2}";
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#
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# In dry-run mode just report what would have been done, otherwise try and
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# make the change.
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#
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if ($dry_run) {
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if ($verbose) {
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printf "[%04d] %s\n", $h1->{id},
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(
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$field eq 'notes'
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? ''
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: $h1->{$field}
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);
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}
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say "SQL: ${stmt}";
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say "Arguments: ",join( ',', @bind );
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}
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else {
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$sth2 = $dbh->prepare($stmt) or die $DBI::errstr;
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#
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# The SQL could generate an error which we'll try and intercept
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#
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try {
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$sth2->execute(@bind)
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or die $DBI::errstr;
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$log->info("Updated $field field for row $h1->{id}");
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}
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catch ($e) {
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$log->info("Failed to update $field field for row $h1->{id}");
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$log->info("Error: $e");
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}
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}
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}
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continue {
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if ($limit) {
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if ($viewed >= $limit) {
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$log->info("Update limit reached");
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last;
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};
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}
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}
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exit;
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#=== FUNCTION ================================================================
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# NAME: Options
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# PURPOSE: Processes command-line options
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# PARAMETERS: $optref Hash reference to hold the options
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# RETURNS: Undef
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# DESCRIPTION:
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# THROWS: no exceptions
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# COMMENTS: none
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# SEE ALSO: n/a
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#===============================================================================
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sub Options {
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my ($optref) = @_;
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my @options = (
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"help", "doc", "dry-run!", "verbose!",
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"config=s", "field=s", "skip=i", "limit=i",
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);
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if ( !GetOptions( $optref, @options ) ) {
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pod2usage( -msg => "$PROG version $VERSION\n", -exitval => 1 );
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}
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return;
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}
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__END__
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#%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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# Application Documentation
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#%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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#{{{
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=head1 NAME
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convert_latin1 - a script to convert fields in the HPR database to UTF-8
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=head1 VERSION
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This documentation refers to convert_latin1 version 0.1.2
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=head1 USAGE
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./convert_latin1 [-help] [-doc] [-config=FILE] [-[no]dry-run]
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[-[no]verbose] [-field=FIELDNAME] [-skip=N] [-limit=N]
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./convert_latin1 -config=.hpr_livedb.cfg -verb -field=title
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./convert_latin1 -config=.hpr_livedb.cfg -verb -dry-run -field=notes
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-limit=10
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=head1 OPTIONS
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=over 8
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=item B<-help>
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Prints a brief help message describing the usage of the program, and then exits.
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=item B<-doc>
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Displays the entirety of the documentation (using a pager), and then exits. To
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generate a PDF version use:
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pod2pdf convert_latin1 --out=convert_latin1.pdf
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=item B<-config=FILE>
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This option allows an alternative configuration file to be used. This file
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defines the location of the database, its port, its name and the username and
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password to be used to access it. This feature was added to allow the script
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to access alternative databases or the live database over an SSH tunnel.
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See the CONFIGURATION AND ENVIRONMENT section below for the file format.
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If the option is omitted the default file is used: B<.hpr_db.cfg>
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=item B<-[no]dry-run>
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|
|
|
Controls whether the program runs in a mode where it performs database
|
|
updates. When enabled the details of the updates to be performed are shown,
|
|
otherwise the updates are applied. The default B<-nodry-run> allows the
|
|
program to perform the changes.
|
|
|
|
=item B<-[no]verbose>
|
|
|
|
Normally very little is reported by the script, although details of errors
|
|
are reported. When B<-verbose> is selected more information
|
|
about the number of rows needing work, the updates performed (or which would
|
|
have been performed) and how many changes were made is reported.
|
|
|
|
=item B<-field=FIELDNAME>
|
|
|
|
This option defines the database field name to be converted. The permitted
|
|
names are B<title>, B<summary>, B<tags> and B<notes> and the table is asumed
|
|
to be B<eps>. If the option is not provided the default field B<title> will be
|
|
used.
|
|
|
|
=item B<-skip=N>
|
|
|
|
This option defines the number of database rows to skip when processing the
|
|
selected field. If omitted then no rows are skipped. The option is useful to
|
|
allow the work to be split into manageable batches, in conjunction with the
|
|
B<-limit=N> option below.
|
|
|
|
=item B<-limit=N>
|
|
|
|
This option defines the number of database rows to work on when processing the
|
|
selected field. If omitted then all rows are processed (after any skip defined
|
|
with te B<-skip=N> option). The option is useful to allow the work to split
|
|
into manageable batches, in conjunction with the B<-skip=N> option above.
|
|
|
|
=back
|
|
|
|
=head1 DESCRIPTION
|
|
|
|
=head2 OVERVIEW
|
|
|
|
The script is designed to repair the HPR MySQL (MariaDB) database which holds
|
|
show metadata. The database was created with 'latin1' encoding, and was later
|
|
changed to use UTF-8. However, no action was taken to ensure the PHP software
|
|
managing the database also used UTF-8. This meant that the 'latin1' encoded data
|
|
was still being generated as Unicode UTF-8 data was being added, and was being
|
|
rendered in the expected way, while there was little or no UTF-8 data being
|
|
stored.
|
|
|
|
The PHP deficiencies were rectified in April 2023 but this meant that all
|
|
non-ASCII characters stored in the database before that were rendered
|
|
incorrectly. The solution was to convert all 'latin1' non-ASCII data into
|
|
UTF-8, and that is what this script does.
|
|
|
|
Detecting non ASCII in database fields was performed with the following SQL:
|
|
|
|
SELECT id,field FROM eps WHERE field <> CONVERT(field USING ASCII) ORDER BY id
|
|
|
|
This is used to generate a list of all rows which might need conversion to
|
|
UTF-8. However, the test is only whether there is non-ASCII data in the row.
|
|
|
|
Ideally, the conversion could have been performed entirely within the database
|
|
with SQL such as the following (for each field):
|
|
|
|
UPDATE eps SET field = CONVERT(binary CONVERT(field USING latin1) USING utf8)
|
|
WHERE field <> CONVERT(field USING ASCII);
|
|
|
|
However, the conversion to UTF-8 fails when the field already contains such
|
|
characters, stopping the query.
|
|
|
|
MySQL and MariaDB are capable of trapping errors (like using B<try/catch> in
|
|
various programming languages), but only in stored procedures. It was felt to
|
|
be undesirable to create stored procedures on the HPR database since this was
|
|
only possible through B<phpMyAdmin> which is due to be phased out.
|
|
|
|
This script was written to enable the catching of errors instead.
|
|
|
|
=head2 SCRIPT DESIGN
|
|
|
|
The main loop returns all rows with non-ASCII characters in the field being
|
|
processed. For each row an 'UPDATE' query is performed using the 'id' field
|
|
(episode number) to select it:
|
|
|
|
UPDATE eps SET field = CONVERT(BINARY CONVERT(field USING latin1) USING utf8)
|
|
WHERE id = value
|
|
|
|
This is performed inside a B<try/catch> statement so that if the query fails
|
|
it does not stop the script. Successes and failures are logged.
|
|
|
|
This algorithm is fairly slow, particularly for the 'notes' field which has
|
|
the most (nearly 600) non-ASCII rows. However, it seems to work as desired.
|
|
|
|
The B<-skip=N> and B<-limit=N> options allow control over the conversion
|
|
process such that the work can be done in batches.
|
|
|
|
Note that the log file used by the script is called B<convert_latin1.log>. It
|
|
is appended to on every run. The file name can only be changed by editing the
|
|
script.
|
|
|
|
=head1 DIAGNOSTICS
|
|
|
|
A list of every error and warning message that the application can generate
|
|
(even the ones that will "never happen"), with a full explanation of each
|
|
problem, one or more likely causes, and any suggested remedies. If the
|
|
application generates exit status codes (e.g. under Unix) then list the exit
|
|
status associated with each error.
|
|
|
|
|
|
=head1 CONFIGURATION AND ENVIRONMENT
|
|
|
|
The script obtains the credentials it requires to open the HPR database from
|
|
a configuration file. The name of the file it expects is B<.hpr_db.cfg> in the
|
|
directory holding the script. This can be changed by use of the
|
|
B<-configuration=FILE> option as described above.
|
|
|
|
The configuration file format is as follows:
|
|
|
|
<database>
|
|
host = 127.0.0.1
|
|
port = PORT
|
|
name = DATABASE
|
|
user = USERNAME
|
|
password = PASSWORD
|
|
</database>
|
|
|
|
=head1 DEPENDENCIES
|
|
|
|
Config::General
|
|
DBI
|
|
Data::Dumper
|
|
Getopt::Long
|
|
Log::Handler
|
|
Log::Handler::Output::File
|
|
Pod::Usage
|
|
SQL::Abstract
|
|
|
|
The script uses the experimental B<try> feature and disables the warning that
|
|
this feature generates. Note that this feature is only available in Perl
|
|
versions at 5.34.0 or above (the script was developed under v5.36.0).
|
|
|
|
=head1 BUGS AND LIMITATIONS
|
|
|
|
There are no known bugs in this module.
|
|
Please report problems to Dave Morriss (Dave.Morriss@gmail.com) Patches are
|
|
welcome.
|
|
|
|
=head1 AUTHOR
|
|
|
|
Dave Morriss (Dave.Morriss@gmail.com)
|
|
|
|
=head1 LICENCE AND COPYRIGHT
|
|
|
|
Copyright (c) 2023 Dave Morriss (Dave.Morriss@gmail.com). All rights reserved.
|
|
|
|
This module is free software; you can redistribute it and/or
|
|
modify it under the same terms as Perl itself. See perldoc perlartistic.
|
|
|
|
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.
|
|
|
|
=cut
|
|
|
|
#}}}
|
|
|
|
# [zo to open fold, zc to close]
|
|
|
|
# vim: syntax=perl:ts=8:sw=4:et:ai:tw=78:fo=tcrqn21:fdm=marker
|
|
|