forked from HPR/hpr-tools
		
	
		
			
				
	
	
		
			882 lines
		
	
	
		
			29 KiB
		
	
	
	
		
			Perl
		
	
	
		
			Executable File
		
	
	
	
	
			
		
		
	
	
			882 lines
		
	
	
		
			29 KiB
		
	
	
	
		
			Perl
		
	
	
		
			Executable File
		
	
	
	
	
#!/usr/bin/env perl
 | 
						|
#===============================================================================
 | 
						|
#
 | 
						|
#         FILE: edit_shownotes
 | 
						|
#
 | 
						|
#        USAGE: ./edit_shownotes [-help] [-debug=N] [-field=NAME] -episode=N
 | 
						|
#
 | 
						|
#  DESCRIPTION: Perform edits on metadata in show notes
 | 
						|
#
 | 
						|
#      OPTIONS: ---
 | 
						|
# REQUIREMENTS: ---
 | 
						|
#         BUGS: ---
 | 
						|
#        NOTES: 2022-12-20: originally written to update the shownotes.txt
 | 
						|
#               file as well as shownotes.json. Now we are phasing out the
 | 
						|
#               former and using just the JSON, so the former file is not
 | 
						|
#               being edited.
 | 
						|
#       AUTHOR: Dave Morriss (djm), Dave.Morriss@gmail.com
 | 
						|
#      VERSION: 0.0.5
 | 
						|
#      CREATED: 2022-12-07 13:05:40
 | 
						|
#     REVISION: 2024-04-27 22:41:24
 | 
						|
#
 | 
						|
#===============================================================================
 | 
						|
 | 
						|
use v5.36;
 | 
						|
use strict;
 | 
						|
use warnings;
 | 
						|
use utf8;
 | 
						|
use feature qw{ postderef say signatures state try };
 | 
						|
no warnings
 | 
						|
    qw{ experimental::postderef experimental::signatures experimental::try };
 | 
						|
 | 
						|
use Getopt::Long;
 | 
						|
use Pod::Usage qw{pod2usage};
 | 
						|
 | 
						|
use Term::ANSIColor;
 | 
						|
use File::Temp;
 | 
						|
use File::Slurper qw{ read_text write_text };
 | 
						|
use File::Copy;
 | 
						|
 | 
						|
use JSON;
 | 
						|
 | 
						|
use Log::Handler;
 | 
						|
 | 
						|
use Data::Dumper;
 | 
						|
 | 
						|
#
 | 
						|
# Version number (manually incremented)
 | 
						|
#
 | 
						|
our $VERSION = '0.0.5';
 | 
						|
 | 
						|
#
 | 
						|
# Script and directory names
 | 
						|
#
 | 
						|
( my $PROG = $0 ) =~ s|.*/||mx;
 | 
						|
( my $DIR  = $0 ) =~ s|/?[^/]*$||mx;
 | 
						|
$DIR = '.' unless $DIR;
 | 
						|
 | 
						|
#-------------------------------------------------------------------------------
 | 
						|
# Declarations
 | 
						|
#-------------------------------------------------------------------------------
 | 
						|
#
 | 
						|
# Constants and other declarations
 | 
						|
#
 | 
						|
my $basedir = "$ENV{HOME}/HPR/Show_Submission";
 | 
						|
my $cache   = "$basedir/shownotes";
 | 
						|
my $logdir  = "$basedir/logs";
 | 
						|
my $logfile = "$logdir/${PROG}.log";
 | 
						|
 | 
						|
my ( $fh,       $showno, $showid );
 | 
						|
my ( $jsonfile, $jsonfile_bk, $json_text, $JSON_content );
 | 
						|
my ( $before,   $field_contents );
 | 
						|
#my ( $txtfile,  $txtfile_bk, $txtstring, @txtbuffer );
 | 
						|
 | 
						|
#
 | 
						|
# Text colours
 | 
						|
#
 | 
						|
my $red     = color('red');
 | 
						|
my $green   = color('green');
 | 
						|
my $yellow  = color('yellow');
 | 
						|
my $magenta = color('magenta');
 | 
						|
my $bold    = color('bold');
 | 
						|
my $reset   = color('reset');
 | 
						|
 | 
						|
#
 | 
						|
# How to find (and edit) the fields in shownotes.{txt,json}.
 | 
						|
# The fields are 'tags', 'title' and 'summary'.
 | 
						|
# If the JSON file is being edited the primary field offered to the editor is
 | 
						|
# the first in the array (e.g. 'episode.Tags') and the other one simply echoes
 | 
						|
# it.
 | 
						|
# NOTE: 2022-12-20 - stopped modifying the shownotes.txt file
 | 
						|
#
 | 
						|
# If the TXT file is being updated (from the primary JSON version edited
 | 
						|
# earlier) we find it in the array holding the text file using the 'regex'
 | 
						|
# value, and build a new line using the 'label' value.
 | 
						|
# This will be cleaned up when the TXT variant is dropped.
 | 
						|
#
 | 
						|
my %fields = (
 | 
						|
    'tags' => {
 | 
						|
        'json' => [ 'episode.Tags', 'metadata.POST.tags' ],
 | 
						|
#        'txt'  => { regex => qr{^Tags:}, label => 'Tags', },
 | 
						|
    },
 | 
						|
    'title' => {
 | 
						|
        'json' => [ 'episode.Title', 'metadata.POST.title' ],
 | 
						|
#        'txt'  => { regex => qr{^Title:}, label => 'Title', },
 | 
						|
    },
 | 
						|
    'summary' => {
 | 
						|
        'json' => [ 'episode.Summary', 'metadata.POST.summary' ],
 | 
						|
#        'txt'  => { regex => qr{^Summary:}, label => 'Summary', },
 | 
						|
    },
 | 
						|
);
 | 
						|
 | 
						|
#
 | 
						|
# Enable Unicode mode
 | 
						|
#
 | 
						|
binmode STDOUT, ":encoding(UTF-8)";
 | 
						|
binmode STDERR, ":encoding(UTF-8)";
 | 
						|
 | 
						|
#-------------------------------------------------------------------------------
 | 
						|
# Options and arguments
 | 
						|
#-------------------------------------------------------------------------------
 | 
						|
my $DEF_DEBUG = 0;
 | 
						|
my $DEF_FIELD = 'tags';
 | 
						|
 | 
						|
#
 | 
						|
# Process options
 | 
						|
#
 | 
						|
my %options;
 | 
						|
Options( \%options );
 | 
						|
 | 
						|
#
 | 
						|
# Default help
 | 
						|
#
 | 
						|
pod2usage(
 | 
						|
    -msg     => "$PROG version $VERSION\n",
 | 
						|
    -verbose => 0,
 | 
						|
    -exitval => 1
 | 
						|
) if ( $options{'help'} );
 | 
						|
 | 
						|
#
 | 
						|
# Detailed help
 | 
						|
#
 | 
						|
pod2usage(
 | 
						|
    -msg       => "$PROG version $VERSION\n",
 | 
						|
    -verbose   => 2,
 | 
						|
    -exitval   => 1,
 | 
						|
) if ( $options{'documentation'} );
 | 
						|
 | 
						|
#
 | 
						|
# Collect options
 | 
						|
#
 | 
						|
my $DEBUG = ( defined( $options{debug} ) ? $options{debug} : $DEF_DEBUG );
 | 
						|
my $field = ( defined( $options{field} ) ? $options{field} : $DEF_FIELD );
 | 
						|
 | 
						|
my $test_dir = $options{test_dir};
 | 
						|
 | 
						|
$showno = $options{episode};
 | 
						|
pod2usage(
 | 
						|
    -msg     => "$PROG version $VERSION\nMissing mandatory option -episode\n",
 | 
						|
    -verbose => 0,
 | 
						|
    -exitval => 1
 | 
						|
) unless $showno;
 | 
						|
 | 
						|
#
 | 
						|
# Make an id in 'hpr1234' format
 | 
						|
#
 | 
						|
$showid = sprintf('hpr%04d',$showno);
 | 
						|
 | 
						|
#
 | 
						|
# Check that the -field=FIELD option is valid
 | 
						|
#
 | 
						|
die "Invalid field specification: $field\n"
 | 
						|
    unless ($field =~ /^(tags|title|summary)$/);
 | 
						|
 | 
						|
#
 | 
						|
# The files we'll parse and/or edit (and that we'll backup to). Check the
 | 
						|
# former exist.
 | 
						|
# If we've received a test directory we'll run in test mode
 | 
						|
#
 | 
						|
if ($test_dir) {
 | 
						|
    #
 | 
						|
    # We need a directory here so remove any file component.
 | 
						|
    #
 | 
						|
    die "Missing path $test_dir\n" unless ( -e $test_dir );
 | 
						|
    unless (-d $test_dir) {
 | 
						|
        #
 | 
						|
        # Trim a file path to what is likely to be a directory only, and test
 | 
						|
        # it exists. Add a trailing '/' if none.
 | 
						|
        #
 | 
						|
        $test_dir =~ s|/?[^/]*$||mx;
 | 
						|
        die "Missing directory $test_dir\n" unless ( -d $test_dir );
 | 
						|
        $test_dir .= '/' unless ($test_dir =~ qr{/$});
 | 
						|
    }
 | 
						|
 | 
						|
    #
 | 
						|
    # Look in the test place
 | 
						|
    #
 | 
						|
    $jsonfile = "$test_dir/shownotes.json";
 | 
						|
#    $txtfile  = "$test_dir/shownotes.txt";
 | 
						|
 | 
						|
    $jsonfile_bk = "$test_dir/shownotes.json.orig";
 | 
						|
#    $txtfile_bk  = "$test_dir/shownotes.txt.orig";
 | 
						|
}
 | 
						|
else {
 | 
						|
    #
 | 
						|
    # Look in the default place
 | 
						|
    #
 | 
						|
    $jsonfile = "$cache/$showid/shownotes.json";
 | 
						|
#    $txtfile  = "$cache/$showid/shownotes.txt";
 | 
						|
 | 
						|
    $jsonfile_bk = "$cache/$showid/shownotes.json.orig";
 | 
						|
#    $txtfile_bk  = "$cache/$showid/shownotes.txt.orig";
 | 
						|
}
 | 
						|
 | 
						|
die colored( "Unable to find JSON file $jsonfile", 'red' ) . "\n"
 | 
						|
    unless ( -e $jsonfile );
 | 
						|
#die colored( "Unable to find text file $txtfile", 'red' ) . "\n"
 | 
						|
#    unless ( -e $txtfile );
 | 
						|
 | 
						|
#-------------------------------------------------------------------------------
 | 
						|
# Set up logging keeping the default log layout except for the date. The format
 | 
						|
# is "%T [%L] %m" where '%T' is the timestamp, '%L' is the log level and '%m is
 | 
						|
# the message. We fiddle with this to implement a 'Test' mode.
 | 
						|
#-------------------------------------------------------------------------------
 | 
						|
my $log = Log::Handler->new();
 | 
						|
 | 
						|
$log->add(
 | 
						|
    file => {
 | 
						|
        timeformat     => "%Y/%m/%d %H:%M:%S",
 | 
						|
        message_layout => (defined($test_dir) ? "%T [%L] TEST %m" : "%T [%L] %m"),
 | 
						|
        filename       => $logfile,
 | 
						|
        minlevel       => 0,
 | 
						|
        maxlevel       => 7,
 | 
						|
    }
 | 
						|
);
 | 
						|
 | 
						|
#-------------------------------------------------------------------------------
 | 
						|
#  Read the JSON input file and parse it into $JSON_content (hashref)
 | 
						|
#-------------------------------------------------------------------------------
 | 
						|
my $json = JSON->new->utf8;
 | 
						|
open( $fh, '<:encoding(UTF-8)', $jsonfile );
 | 
						|
$json_text = <$fh>;
 | 
						|
close($fh);
 | 
						|
 | 
						|
#
 | 
						|
# Careful! Bad JSON can crash the script here!
 | 
						|
#
 | 
						|
try {
 | 
						|
    $JSON_content = decode_json($json_text);
 | 
						|
}
 | 
						|
catch ($e) {
 | 
						|
    die colored( "Failed to decode the JSON in $jsonfile", 'red' ) . "\n"
 | 
						|
}
 | 
						|
 | 
						|
$log->info( $showno, "Collecting $field from JSON" );
 | 
						|
 | 
						|
_debug( $DEBUG > 2, Dumper($JSON_content) );
 | 
						|
#_debug( $DEBUG > 2, "\$field: $field" );
 | 
						|
#_debug( $DEBUG > 2, Dumper(\%fields) );
 | 
						|
 | 
						|
 | 
						|
#-------------------------------------------------------------------------------
 | 
						|
# Get the contents of the primary JSON field. The group will all be the same,
 | 
						|
# as will the text versions, so we edit the primary and propagate to the
 | 
						|
# others.
 | 
						|
#-------------------------------------------------------------------------------
 | 
						|
$log->info( $showno,
 | 
						|
    "Collecting from JSON with path '$fields{$field}->{json}->[0]'" );
 | 
						|
 | 
						|
#
 | 
						|
# Use the path in the %fields hash to get the prinmary node in the JSON hash.
 | 
						|
# We are using 'get_JSON' rather than going to the field directly because
 | 
						|
# we're hunting for different parts of the JSON structure depending on the
 | 
						|
# -field=NAME option and using a jq-like path stored in %fields.
 | 
						|
#
 | 
						|
$field_contents = get_JSON( $JSON_content, $fields{$field}->{json}->[0] );
 | 
						|
#say( defined($field_contents) ? $field_contents : 'undefined' );
 | 
						|
die colored( "No contents in field '$field'. Can't continue", 'red' ) . "\n"
 | 
						|
    unless ( defined($field_contents) );
 | 
						|
 | 
						|
$log->info( $showno, "Contents of field: $field_contents" );
 | 
						|
$before = $field_contents;
 | 
						|
 | 
						|
#
 | 
						|
# Run the editor on what we collected
 | 
						|
#
 | 
						|
if ( $field eq 'tags' ) {
 | 
						|
    $field_contents
 | 
						|
        = check_field( $field, run_editor($field_contents), 200, qr{(\n)} );
 | 
						|
}
 | 
						|
elsif ( $field eq 'title' ) {
 | 
						|
    $field_contents
 | 
						|
        = check_field( $field, run_editor($field_contents), 100, qr{(\n)} );
 | 
						|
}
 | 
						|
elsif ( $field eq 'summary' ) {
 | 
						|
    $field_contents
 | 
						|
        = check_field( $field, run_editor($field_contents), 100, qr{(\n)} );
 | 
						|
}
 | 
						|
 | 
						|
die colored( "Nothing was changed. Exiting", 'red' ) . "\n"
 | 
						|
    if ( $field_contents eq $before );
 | 
						|
 | 
						|
$log->info( $showno, "New contents of field: $field_contents" );
 | 
						|
 | 
						|
#-------------------------------------------------------------------------------
 | 
						|
# Load the text version of the metadata
 | 
						|
# NOTE: 2022-12-20 - stopped modifying the shownotes.txt file
 | 
						|
#-------------------------------------------------------------------------------
 | 
						|
#open( $fh, '<:encoding(UTF-8)', $txtfile );
 | 
						|
#@txtbuffer = <$fh>;
 | 
						|
#close($fh);
 | 
						|
 | 
						|
#-------------------------------------------------------------------------------
 | 
						|
# Make the changes to all the relevant points in the two data structures.
 | 
						|
# NOTE: 2022-12-20 - stopped modifying the shownotes.txt file
 | 
						|
#-------------------------------------------------------------------------------
 | 
						|
put_JSON( $JSON_content, $fields{$field}->{json}->[0], $field_contents );
 | 
						|
put_JSON( $JSON_content, $fields{$field}->{json}->[1], $field_contents );
 | 
						|
#_debug( $DEBUG > 1, Dumper($JSON_content) );
 | 
						|
 | 
						|
$log->info( $showno, "Updated JSON '$field' fields" );
 | 
						|
 | 
						|
#@txtbuffer = update_txt( \@txtbuffer, $fields{$field}->{txt}->{regex},
 | 
						|
#    $fields{$field}->{txt}->{label} . ":\t$field_contents\n" );
 | 
						|
#_debug( $DEBUG > 1, "Text: " . Dumper( \@txtbuffer ) );
 | 
						|
 | 
						|
#$log->info( $showno, "Updated text '$field' fields" );
 | 
						|
 | 
						|
#-------------------------------------------------------------------------------
 | 
						|
# Turn the data structures back into files, backing up the originals and
 | 
						|
# writing the new.
 | 
						|
#-------------------------------------------------------------------------------
 | 
						|
unless ( -e $jsonfile_bk ) {
 | 
						|
    copy ($jsonfile, $jsonfile_bk) or die "Unable to backup $jsonfile\n";
 | 
						|
    $log->info( $showno, "JSON backup created" );
 | 
						|
}
 | 
						|
$json_text = encode_json($JSON_content);
 | 
						|
write_text($jsonfile,$json_text);
 | 
						|
 | 
						|
$log->info( $showno, "JSON file updated" );
 | 
						|
 | 
						|
#unless ( -e $txtfile_bk ) {
 | 
						|
#    copy ($txtfile, $txtfile_bk) or die "Unable to backup $txtfile\n";
 | 
						|
#    $log->info( $showno, "Text backup created" );
 | 
						|
#}
 | 
						|
#$txtstring = join('',@txtbuffer);
 | 
						|
#write_text($txtfile,$txtstring);
 | 
						|
#
 | 
						|
#$log->info( $showno, "Text file updated" );
 | 
						|
 | 
						|
exit;
 | 
						|
 | 
						|
#===  FUNCTION  ================================================================
 | 
						|
#         NAME: get_JSON
 | 
						|
#      PURPOSE: Traverse a data structure using dotted notation and return the
 | 
						|
#               value at the end point
 | 
						|
#   PARAMETERS: $hash           hashref to traverse
 | 
						|
#               $path           a path in the form of '.key1.key2.[0]' which
 | 
						|
#                               should walk to the key 'key1', then 'key2'
 | 
						|
#                               within it, and open the array expected to be
 | 
						|
#                               there and get element 0.
 | 
						|
#      RETURNS: The value found or undef
 | 
						|
#  DESCRIPTION: Uses 'traverse_JSON' to find the $path in the $hash, returning
 | 
						|
#               a pointer (reference) to it. This can then be de-referenced to
 | 
						|
#               return the item being referenced - unless it's undefined in
 | 
						|
#               which case that value is returned. Being undefined means that
 | 
						|
#               the path did not match the structure of the hash.
 | 
						|
#       THROWS: No exceptions
 | 
						|
#     COMMENTS: None
 | 
						|
#     SEE ALSO: N/A
 | 
						|
#===============================================================================
 | 
						|
sub get_JSON {
 | 
						|
    my ( $hash, $path ) = @_;
 | 
						|
 | 
						|
    my $pointer = traverse_JSON( $hash, $path );
 | 
						|
 | 
						|
    #
 | 
						|
    # If undef then need to return undef, not try and deref it!
 | 
						|
    #
 | 
						|
    if (defined($pointer)) {
 | 
						|
        return $$pointer;
 | 
						|
    }
 | 
						|
    return;
 | 
						|
}
 | 
						|
 | 
						|
#===  FUNCTION  ================================================================
 | 
						|
#         NAME: put_JSON
 | 
						|
#      PURPOSE: Traverse a data structure using dotted notation and update the
 | 
						|
#               value at the end point
 | 
						|
#   PARAMETERS: $hash           hashref to traverse
 | 
						|
#               $path           a path in the form of '.key1.key2.[0]' which
 | 
						|
#                               should walk to the key 'key1', then 'key2'
 | 
						|
#                               within it, and open the array expected to be
 | 
						|
#                               there and rewrite element 0.
 | 
						|
#               $new_value      the new value to place at the point in the
 | 
						|
#                               hash
 | 
						|
#      RETURNS: The previous value if found, or undef
 | 
						|
#  DESCRIPTION: Uses 'traverse_JSON' to find the $path in the $hash, returning
 | 
						|
#               a pointer (reference) to it. This can then be de-referenced to
 | 
						|
#               return the item being referenced - unless it's undefined in
 | 
						|
#               which case that value is returned. Being undefined means that
 | 
						|
#               the path did not match the structure of the hash. Finally, if
 | 
						|
#               the reference is valid then it's used to save the contents of
 | 
						|
#               $new_value.
 | 
						|
#       THROWS: No exceptions
 | 
						|
#     COMMENTS: None
 | 
						|
#     SEE ALSO: N/A
 | 
						|
#===============================================================================
 | 
						|
sub put_JSON {
 | 
						|
    my ( $hash, $path, $new_value ) = @_;
 | 
						|
 | 
						|
    my $pointer = traverse_JSON( $hash, $path );
 | 
						|
    my $old_value;
 | 
						|
 | 
						|
    #
 | 
						|
    # If $pointer is defined then dereference it as the return value. Also,
 | 
						|
    # use it to write the new value.
 | 
						|
    #
 | 
						|
    if (defined($pointer)) {
 | 
						|
        $old_value = $$pointer;
 | 
						|
        $$pointer = $new_value;
 | 
						|
    }
 | 
						|
 | 
						|
    return $old_value;
 | 
						|
}
 | 
						|
 | 
						|
#===  FUNCTION  ================================================================
 | 
						|
#         NAME: traverse_JSON
 | 
						|
#      PURPOSE: Traverse a data structure using dotted notation
 | 
						|
#   PARAMETERS: $hash           hashref to traverse
 | 
						|
#               $path           a path in the form of '.key1.key2.[0]' which
 | 
						|
#                               should walk to the key 'key1', then 'key2'
 | 
						|
#                               within it, and open the array expected to be
 | 
						|
#                               there and return a pointer to element 0.
 | 
						|
#      RETURNS: A reference to the end point of the path, or undef if not
 | 
						|
#               found.
 | 
						|
#  DESCRIPTION: Given a path like '.metadata.POST.title' (where the leading
 | 
						|
#               '.' is optional because it's ignored), this is used to
 | 
						|
#               traverse a Perl version of a JSON data structure to return
 | 
						|
#               a *pointer* (reference) to a node.
 | 
						|
#
 | 
						|
#               This is done by processing the path step by step and using
 | 
						|
#               'name' elements as hash keys to get to the next level or
 | 
						|
#               return a terminal hash element. We also cater for '.[0]'
 | 
						|
#               format path elements which means to use the zeroth member of
 | 
						|
#               an array. Thus, if the tags were represented as an array rather
 | 
						|
#               than a scalar CSV string, we'd be able to use a path like:
 | 
						|
#               'episode.Tags.[0]' to return the first tag.
 | 
						|
#
 | 
						|
#               The data structure traversal is performed by using a pointer
 | 
						|
#               to a part of it, and since nested hashes are constructed by
 | 
						|
#               using hashrefs as hash element values, we get back references
 | 
						|
#               by default.
 | 
						|
#
 | 
						|
#               Once the terminal node has been reached it may be a scalar
 | 
						|
#               (very likely in this application), so we make and return
 | 
						|
#               a reference to it so that the caller can use this reference in
 | 
						|
#               a standard way to return or change the contents.
 | 
						|
#
 | 
						|
#               This function is meant to be more generic than this
 | 
						|
#               application requires. The JSON we're dealing with here doesn't
 | 
						|
#               have arrays (at the moment). This description is
 | 
						|
#               application-specifc however!
 | 
						|
#       THROWS: No exceptions
 | 
						|
#     COMMENTS: None
 | 
						|
#     SEE ALSO: N/A
 | 
						|
#===============================================================================
 | 
						|
sub traverse_JSON {
 | 
						|
    my ( $hash, $path ) = @_;
 | 
						|
 | 
						|
    my ( $pointer, $index );
 | 
						|
    my @elements = split( '\.', $path );
 | 
						|
 | 
						|
    #
 | 
						|
    # Because $hash is a hashref we can just copy it
 | 
						|
    #
 | 
						|
    $pointer = $hash;
 | 
						|
 | 
						|
    #
 | 
						|
    # Traverse the hash using the path
 | 
						|
    #
 | 
						|
    foreach my $element (@elements) {
 | 
						|
        next unless defined($element);
 | 
						|
 | 
						|
        #
 | 
						|
        # Plain names are keys or scalar end nodes, bracketed things are
 | 
						|
        # arrays (which can be scalars of course)
 | 
						|
        #
 | 
						|
        unless ( ($index) = ( $element =~ /\[([^]])\]/ ) ) {
 | 
						|
            # Hash key
 | 
						|
            if ( exists( $pointer->{$element} ) ) {
 | 
						|
                if ( ref( $pointer->{$element} ) eq '' ) {
 | 
						|
                    #
 | 
						|
                    # It's not a refererence so make a reference to it
 | 
						|
                    #
 | 
						|
                    $pointer = \$pointer->{$element};
 | 
						|
                }
 | 
						|
                else {
 | 
						|
                    #
 | 
						|
                    # It's a reference
 | 
						|
                    #
 | 
						|
                    $pointer = $pointer->{$element};
 | 
						|
                }
 | 
						|
            }
 | 
						|
            else {
 | 
						|
                #
 | 
						|
                # Doesn't exist!
 | 
						|
                #
 | 
						|
                return;    #undef
 | 
						|
            }
 | 
						|
        }
 | 
						|
        else {
 | 
						|
            # Array
 | 
						|
            if ( exists( $pointer->[$index] ) ) {
 | 
						|
                if ( ref( $pointer->[$index] ) eq '' ) {
 | 
						|
                    #
 | 
						|
                    # It's not a refererence so make a reference to it
 | 
						|
                    #
 | 
						|
                    $pointer = \$pointer->[$index];
 | 
						|
                }
 | 
						|
                else {
 | 
						|
                    #
 | 
						|
                    # It's a reference
 | 
						|
                    #
 | 
						|
                    $pointer = $pointer->[$index];
 | 
						|
                }
 | 
						|
            }
 | 
						|
            else {
 | 
						|
                #
 | 
						|
                # Doesn't exist!
 | 
						|
                #
 | 
						|
                return;    # undef
 | 
						|
            }
 | 
						|
        }
 | 
						|
    }
 | 
						|
    return $pointer;
 | 
						|
}
 | 
						|
 | 
						|
#===  FUNCTION  ================================================================
 | 
						|
#         NAME: update_txt
 | 
						|
#      PURPOSE: Update the data structure from 'shownotes.txt' in the light of
 | 
						|
#               requested changes.
 | 
						|
#   PARAMETERS: $array          arrayref to the contents of the shownotes.txt
 | 
						|
#                               file
 | 
						|
#               $regex          regular expression to find the line that needs
 | 
						|
#                               to be changed (there's just one main one).
 | 
						|
#               $new_value      new value to replace the original line
 | 
						|
#      RETURNS: Modified array
 | 
						|
#  DESCRIPTION: Finds the element in the arrayref ($array) which matches the
 | 
						|
#               regular expression ($regex). When found it is replaced by the
 | 
						|
#               new value ($new_value). The modified buffer is returned as
 | 
						|
#               a list. Uses $result to determine the value of each line since
 | 
						|
#               it is not permitted to change the $_ variable in the 'map'
 | 
						|
#               statement.
 | 
						|
#       THROWS: No exceptions
 | 
						|
#     COMMENTS: None
 | 
						|
#     SEE ALSO: N/A
 | 
						|
#===============================================================================
 | 
						|
sub update_txt {
 | 
						|
    my ( $array, $regex, $new_value ) = @_;
 | 
						|
 | 
						|
    my $result;
 | 
						|
    my @newbuffer
 | 
						|
        = map { $result = ( $_ =~ /$regex/ ? $new_value : $_ ); $result }
 | 
						|
        @$array;
 | 
						|
 | 
						|
    return @newbuffer;
 | 
						|
}
 | 
						|
 | 
						|
#===  FUNCTION  ================================================================
 | 
						|
#         NAME: run_editor
 | 
						|
#      PURPOSE: Run an interactive vim editor on a string
 | 
						|
#   PARAMETERS: $string         String to edit
 | 
						|
#               $options        An arrayref containing options for vim
 | 
						|
#                               (optional) Example '+set paste'. Each option
 | 
						|
#                               (such as '-c startinsert') needs to be
 | 
						|
#                               a separate array element.
 | 
						|
#      RETURNS: Edited string
 | 
						|
#  DESCRIPTION: Makes a temporary file with File::Temp ensuring that the file
 | 
						|
#               is in utf8 mode. Writes the edit string to the file and invokes
 | 
						|
#               the 'vim' editor on it. The resulting file is then read back
 | 
						|
#               into a string and returned to the caller, again taking care to
 | 
						|
#               retain utf8 mode.
 | 
						|
#       THROWS: No exceptions
 | 
						|
#     COMMENTS: File::Slurp and UTF-8 don't go well together. Moved to
 | 
						|
#               File::Slurper instead
 | 
						|
#     SEE ALSO: N/A
 | 
						|
#===============================================================================
 | 
						|
sub run_editor {
 | 
						|
    my ( $string, $options ) = @_;
 | 
						|
 | 
						|
    #
 | 
						|
    # Build an arguments array for 'system'
 | 
						|
    #
 | 
						|
    my @args;
 | 
						|
    push( @args, @$options ) if $options;
 | 
						|
 | 
						|
    #
 | 
						|
    # Make a temporary file
 | 
						|
    #
 | 
						|
    my $tfh = File::Temp->new;
 | 
						|
    binmode $tfh, ":encoding(UTF-8)";
 | 
						|
    my $tfn = $tfh->filename;
 | 
						|
    print $tfh $string if $string;
 | 
						|
    $tfh->close;
 | 
						|
 | 
						|
    #
 | 
						|
    # Add the filename to the arguments
 | 
						|
    #
 | 
						|
    push( @args, $tfn );
 | 
						|
 | 
						|
    die "Edit failed\n"
 | 
						|
        unless ( system( ( 'vim', @args ) ) == 0 );
 | 
						|
 | 
						|
    return read_text($tfn);
 | 
						|
}
 | 
						|
 | 
						|
#===  FUNCTION  ================================================================
 | 
						|
#         NAME: check_field
 | 
						|
#      PURPOSE: Checks the a field is not too long and doesn't contain certain
 | 
						|
#               characters
 | 
						|
#   PARAMETERS: $name           name of field
 | 
						|
#               $field          string to be checked
 | 
						|
#               $maxlen         maximum string length
 | 
						|
#               $regex          regex containing illegal characters to be removed
 | 
						|
#      RETURNS: The input string truncated and with any illegal characters
 | 
						|
#               removed.
 | 
						|
#  DESCRIPTION: Runs a substitution on the string then truncates the result if
 | 
						|
#               it is too long.
 | 
						|
#       THROWS: No exceptions
 | 
						|
#     COMMENTS: None
 | 
						|
#     SEE ALSO: N/A
 | 
						|
#===============================================================================
 | 
						|
sub check_field {
 | 
						|
    my ( $name, $field, $maxlen, $regex ) = @_;
 | 
						|
 | 
						|
    return unless $field;
 | 
						|
 | 
						|
    $field =~ s/$regex//g;
 | 
						|
    if ( length($field) > $maxlen ) {
 | 
						|
        warn "Field '$name' too long ("
 | 
						|
            . length($field)
 | 
						|
            . "); truncated to "
 | 
						|
            . $maxlen . "\n";
 | 
						|
        $field = substr( $field, 0, $maxlen );
 | 
						|
    }
 | 
						|
    return $field;
 | 
						|
}
 | 
						|
 | 
						|
#===  FUNCTION  ================================================================
 | 
						|
#         NAME: coalesce
 | 
						|
#      PURPOSE: To find the first defined argument and return it
 | 
						|
#   PARAMETERS: Arbitrary number of arguments
 | 
						|
#      RETURNS: The first defined argument or undef if there are none
 | 
						|
#  DESCRIPTION:
 | 
						|
#       THROWS: No exceptions
 | 
						|
#     COMMENTS: None
 | 
						|
#     SEE ALSO: N/A
 | 
						|
#===============================================================================
 | 
						|
sub coalesce {
 | 
						|
    foreach (@_) {
 | 
						|
        return $_ if defined($_);
 | 
						|
    }
 | 
						|
    return undef;    ## no critic
 | 
						|
}
 | 
						|
 | 
						|
#===  FUNCTION  ================================================================
 | 
						|
#         NAME: _debug
 | 
						|
#      PURPOSE: Prints debug reports
 | 
						|
#   PARAMETERS: $active         Boolean: 1 for print, 0 for no print
 | 
						|
#               $message        Message to print
 | 
						|
#      RETURNS: Nothing
 | 
						|
#  DESCRIPTION: Outputs a message if $active is true. It removes any trailing
 | 
						|
#               newline and then adds one in the 'print' to the caller doesn't
 | 
						|
#               have to bother. Prepends the message with 'D> ' to show it's
 | 
						|
#               a debug message.
 | 
						|
#       THROWS: No exceptions
 | 
						|
#     COMMENTS: None
 | 
						|
#     SEE ALSO: N/A
 | 
						|
#===============================================================================
 | 
						|
sub _debug {
 | 
						|
    my ( $active, $message ) = @_;
 | 
						|
 | 
						|
    chomp($message);
 | 
						|
    print STDERR "D> $message\n" if $active;
 | 
						|
}
 | 
						|
 | 
						|
#===  FUNCTION  ================================================================
 | 
						|
#         NAME: Options
 | 
						|
#      PURPOSE: Processes command-line options
 | 
						|
#   PARAMETERS: $optref     Hash reference to hold the options
 | 
						|
#      RETURNS: Undef
 | 
						|
#  DESCRIPTION:
 | 
						|
#       THROWS: no exceptions
 | 
						|
#     COMMENTS: none
 | 
						|
#     SEE ALSO: n/a
 | 
						|
#===============================================================================
 | 
						|
sub Options {
 | 
						|
    my ($optref) = @_;
 | 
						|
 | 
						|
    my @options = (
 | 
						|
        "help",      "documentation|manpage",
 | 
						|
        "debug=i",   "field=s",
 | 
						|
        "episode=i", "test_dir=s",
 | 
						|
    );
 | 
						|
 | 
						|
    if ( !GetOptions( $optref, @options ) ) {
 | 
						|
        pod2usage(
 | 
						|
            -msg     => "$PROG version $VERSION\n",
 | 
						|
            -verbose => 0,
 | 
						|
            -exitval => 1
 | 
						|
        );
 | 
						|
    }
 | 
						|
 | 
						|
    return;
 | 
						|
}
 | 
						|
 | 
						|
__END__
 | 
						|
 | 
						|
#%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 | 
						|
#  Application Documentation
 | 
						|
#%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 | 
						|
#{{{
 | 
						|
 | 
						|
=head1 NAME
 | 
						|
 | 
						|
edit_shownotes - edit JSON and text shownote metadata
 | 
						|
 | 
						|
=head1 VERSION
 | 
						|
 | 
						|
This documentation refers to edit_shownotes version 0.0.5
 | 
						|
 | 
						|
=head1 USAGE
 | 
						|
 | 
						|
    ./edit_shownotes [-help] [-documentation|manpage] [-debug=N]
 | 
						|
        [-field=FIELD] -episode=N
 | 
						|
 | 
						|
 | 
						|
    ./edit_shownotes -field=tags -episode=3754
 | 
						|
    ./edit_shownotes -field=summary -episode=3762 \
 | 
						|
        -test_dir=$PWD/tests/shownotes/hpr3762
 | 
						|
 | 
						|
=head1 OPTIONS
 | 
						|
 | 
						|
=over 8
 | 
						|
 | 
						|
=item B<-help>
 | 
						|
 | 
						|
Prints a brief help message describing the usage of the program, and then exits.
 | 
						|
 | 
						|
=item B<-manpage> or B<-documentation>
 | 
						|
 | 
						|
Prints the entire documentation for the script.
 | 
						|
 | 
						|
=item B<-field=FIELD>
 | 
						|
 | 
						|
This optional parameter defaults to B<-field=tags>. The only permitted fields
 | 
						|
are 'tags', 'title' and 'summary'.
 | 
						|
 | 
						|
=item B<-episode=N>
 | 
						|
 | 
						|
This mandatory option specifies the number of the HPR episode that is being
 | 
						|
parsed. It needs to be numeric even though it is often used with an 'hpr'
 | 
						|
prefix internally. Leading zeroes are not required (when these are
 | 
						|
appropriate).
 | 
						|
 | 
						|
=item B<-test_dir=PATH>
 | 
						|
 | 
						|
This option is for testing. Normally the script determines the path to the
 | 
						|
file(s) it will parse and update. It actually finds the field specified by the
 | 
						|
B<-field-FIELD> option in the JSON file B<shownotes.json> and calls the editor
 | 
						|
to change this, then propagates any changes to the other JSON instance and the
 | 
						|
one in B<shownotes.txt>.
 | 
						|
 | 
						|
This option has been provided to make it simpler to make copies of the files
 | 
						|
relating to an incoming show and use them to test changes to the script.
 | 
						|
 | 
						|
The current workflow expects the "live" files in
 | 
						|
B<$HOME/HPR/Show_Submission/shownotes/hprSHOW>, but there is another area
 | 
						|
where show files are placed for testing:
 | 
						|
B<$HOME/HPR/Show_Submission/tests/shownotes/hprSHOW>.
 | 
						|
 | 
						|
It is simply a matter of making a copy and of referencing the directory path
 | 
						|
to this option. Changes will be made to this copy and log records written, but
 | 
						|
these will contain the word 'TEST' to show that the script is being run in
 | 
						|
this mode.
 | 
						|
 | 
						|
=item B<-debug=N>
 | 
						|
 | 
						|
Causes certain debugging information to be displayed.
 | 
						|
 | 
						|
    0   (the default) no debug output
 | 
						|
    1   N/A
 | 
						|
    2   TBA
 | 
						|
    3   TBA
 | 
						|
 | 
						|
=back
 | 
						|
 | 
						|
=head1 DESCRIPTION
 | 
						|
 | 
						|
This script is meant to be a component in a workflow dealing with the notes
 | 
						|
submitted by HPR hosts with the shows they are uploading.
 | 
						|
 | 
						|
The data from the web form which is used by hosts submitting shows is received
 | 
						|
in two formats, with fixed names.
 | 
						|
 | 
						|
The file B<shownotes.txt> contains the form data in a label/value format, but
 | 
						|
also uses PHP dumps to show some of the metadata. It is no longer used by the
 | 
						|
current workflow, but is retained for historical reasons.
 | 
						|
 | 
						|
The alternative file format is JSON, which is stored in B<shownotes.json>.
 | 
						|
This contains the same data as the other file but in a more standardised
 | 
						|
format.
 | 
						|
 | 
						|
This script is designed to allow the editing of three specific fields in these
 | 
						|
two files. This is because these fields are not used in the show note
 | 
						|
preparation workflow (though they are referenced), but any changes can be
 | 
						|
propagated back to the HPR server to allow workflows there to use the
 | 
						|
corrected version(s).
 | 
						|
 | 
						|
The fields which can be edited are duplicated in the two files. One of these
 | 
						|
is edited, and if appropriate, is propagated to the other duplicates. This
 | 
						|
simplifies the editing of the text format, and the JSON format, which is not
 | 
						|
simple to edit in a conventional way.
 | 
						|
 | 
						|
=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
 | 
						|
 | 
						|
A full explanation of any configuration system(s) used by the application,
 | 
						|
including the names and locations of any configuration files, and the
 | 
						|
meaning of any environment variables or properties that can be set. These
 | 
						|
descriptions must also include details of any configuration language used
 | 
						|
 | 
						|
 | 
						|
=head1 DEPENDENCIES
 | 
						|
 | 
						|
Data::Dumper
 | 
						|
File::Slurper
 | 
						|
File::Temp
 | 
						|
Getopt::Long
 | 
						|
JSON
 | 
						|
Log::Handler
 | 
						|
Pod::Usage
 | 
						|
Term::ANSIColor
 | 
						|
 | 
						|
=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) 2022 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
 | 
						|
 |