<?php

namespace CK\MARCspec;
require("vendor/autoload.php");

// parse and access MARCspec like an array
$fixed = new MARCspec('007[0]/1-8{/0=\a}');
$fixed['field']['tag'];                                                  // '007'
$fixed['field']['charStart'];                                            // 1
$fixed['field']['charEnd'];                                              // 8
$fixed['field']['charLength'];                                           // 8
$fixed['field']['subSpecs'][0]['leftSubTerm'];                           // '007[0]/0'
$fixed['field']['subSpecs'][0]['operator'];                              // '='
$fixed['field']['subSpecs'][0]['rightSubTerm'];                          // '\a'
$fixed['field']['subSpecs'][0]['rightSubTerm']['comparable'];            // 'a'

$fixed;                                                                  // '007[0]/1-8{007[0]/0=\a}'

$variable = new MARCspec('245_10$a');
$variable['field']['tag'];                                               // '245'
$variable['field']['indicator1'];                                        // '1'
$variable['field']['indicator2'];                                        // '0'
$variable['subfields'][0]['tag'];                                        // 'a'
$variable['a'][0]['tag'];                                                // 'a'

$variable;                                                               // '245[0-#]_10$a'

$complex = new MARCspec('020$a{$q[0]~\pbk}{$c/0=\€|$c/0=\$}');
$complex['field']['tag'];                                                // '020'
$complex['subfields'][0]['tag'];                                         // 'a'

$complex['a'][0]['subSpecs'][0]['leftSubTerm'];                          // '020[0-#]$q[0]'
$complex['a'][0]['subSpecs'][0]['operator'];                             // '~'
$complex['a'][0]['subSpecs'][0]['rightSubTerm']['comparable'];           // 'pbk'

$complex['a'][0]['subSpecs'][1][0]['leftSubTerm'];                       // '020[0-#]$c[0-#]/0'
$complex['a'][0]['subSpecs'][1][0]['leftSubTerm']['c'][0]['charStart'];  // 0
$complex['a'][0]['subSpecs'][1][0]['leftSubTerm']['c'][0]['charEnd'];    // 0
$complex['a'][0]['subSpecs'][1][0]['leftSubTerm']['c'][0]['charLength']; // 1
$complex['a'][0]['subSpecs'][1][0]['operator'];                          // '='
$complex['a'][0]['subSpecs'][1][0]['rightSubTerm']['comparable'];        // '€'

$complex['a'][0]['subSpecs'][1][1]['leftSubTerm'];                       // '020[0-#]$c[0-#]/0'
$complex['a'][0]['subSpecs'][1][1]['leftSubTerm']['c'][0]['charStart'];  // 0
$complex['a'][0]['subSpecs'][1][1]['leftSubTerm']['c'][0]['charEnd'];    // 0
$complex['a'][0]['subSpecs'][1][1]['leftSubTerm']['c'][0]['charLength']; // 1
$complex['a'][0]['subSpecs'][1][1]['operator'];                          // '='
$complex['a'][0]['subSpecs'][1][1]['rightSubTerm']['comparable'];        // '$'

// creating MARCspec

// creating a new Field
$Field = new Field('...');
$Field['indicator2'] = '1'; // or $Field->setIndicator2('1');
$Field['indexStart'] = 0; // or $Field->setIndex(0);

// creating a new MARCspec by setting the Field
$MARCspec = MARCspec::setField($Field);

// creating a new Subfield
$Subfield = new Subfield('a');

// adding the Subfield to the MARCspec
$MARCspec->addSubfields($Subfield);

// creating instances of MARCspec and ComparisonString
$LeftSubTerm = new MARCspec('...$a/#');
$RightSubTerm = new ComparisonString(',');

// creating a new SubSpec with instances above and an operator '='
$SubSpec = new SubSpec($LeftSubTerm,'=',$RightSubTerm);

// adding the SubSpec to the Subfield
$Subfield['subSpecs'] = $SubSpec;

// whole MARCspec
$MARCspec; // '...[0]__1$a[0-#]{...[0-#]$a[0-#]/#-#=\,}'