/**
* Returns an array of the changes from $old text to the $new one
*
* This is just slightly customized version of Paul's Simple Diff Algorithm.
* Given two arrays of chunks (words), the function returns an array of the changes
* leading from $old to $new.
*
* @author Paul Butler
* @copyright (C) Paul Butler 2007 <http://www.paulbutler.org/>
* @license May be used and distributed under the zlib/libpng license
* @link https://github.com/paulgb/simplediff
* @version 26f97a48598d7b306ae9
* @param array $old array of words
* @param array $new array of words
* @return array
*/
function local_amos_simplediff(array $old, array $new)
{
$maxlen = 0;
foreach ($old as $oindex => $ovalue) {
$nkeys = array_keys($new, $ovalue);
foreach ($nkeys as $nindex) {
$matrix[$oindex][$nindex] = isset($matrix[$oindex - 1][$nindex - 1]) ? $matrix[$oindex - 1][$nindex - 1] + 1 : 1;
if ($matrix[$oindex][$nindex] > $maxlen) {
$maxlen = $matrix[$oindex][$nindex];
$omax = $oindex + 1 - $maxlen;
$nmax = $nindex + 1 - $maxlen;
}
}
}
if ($maxlen == 0) {
return array(array('d' => $old, 'i' => $new));
}
return array_merge(local_amos_simplediff(array_slice($old, 0, $omax), array_slice($new, 0, $nmax)), array_slice($new, $nmax, $maxlen), local_amos_simplediff(array_slice($old, $omax + $maxlen), array_slice($new, $nmax + $maxlen)));
}
/**
* Renders the stage
*
* @param local_amos_stage $stage
* @return string
*/
protected function render_local_amos_stage(local_amos_stage $stage)
{
global $CFG;
$table = new html_table();
$table->id = 'amosstage';
$table->head = array(get_string('stagestring', 'local_amos'), get_string('stageoriginal', 'local_amos'), get_string('stagelang', 'local_amos'), get_string('stagetranslation', 'local_amos') . $this->help_icon('stagetranslation', 'local_amos'));
$table->colclasses = array('stringinfo', 'original', 'lang', 'translation');
$standard = array();
foreach (local_amos_standard_plugins() as $plugins) {
$standard = array_merge($standard, $plugins);
}
$committable = 0;
foreach ($stage->strings as $string) {
$cells = array();
// string identification
if (isset($standard[$string->component])) {
$componentname = $standard[$string->component];
} else {
$componentname = $string->component;
}
$stringinfo = html_writer::tag('span', $string->version, array('class' => 'version'));
$stringinfo .= ' [' . html_writer::tag('span', $string->stringid, array('class' => 'stringid')) . ',' . html_writer::tag('span', $componentname, array('class' => 'component')) . ']';
$cells[0] = new html_table_cell($stringinfo);
// original of the string
$cells[1] = new html_table_cell(html_writer::tag('div', self::add_breaks(s($string->original)), array('class' => 'preformatted')));
// the language in which the original is displayed
$cells[2] = new html_table_cell($string->language);
// the current and the new translation
$unstageurl = new moodle_url('/local/amos/stage.php', array('unstage' => $string->stringid, 'component' => $string->component, 'branch' => $string->branch, 'lang' => $string->language));
$unstagebutton = $this->single_button($unstageurl, get_string('unstage', 'local_amos'), 'post', array('class' => 'singlebutton protected unstagebutton'));
if ($string->deleted) {
// removal of the string
$t = self::add_breaks(s($string->current));
$t = html_writer::tag('div', $t, array('class' => 'preformatted'));
$cells[3] = new html_table_cell($t . $unstagebutton);
if ($string->committable) {
$committable++;
$cells[3]->attributes['class'] .= 'committable removal';
} else {
$cells[3]->attributes['class'] .= 'uncommittable removal';
}
} else {
if (trim($string->current) === trim($string->new)) {
// no difference
$t = self::add_breaks(s($string->current));
$t = html_writer::tag('div', $t, array('class' => 'preformatted'));
$cells[3] = new html_table_cell($t . $unstagebutton);
$cells[3]->attributes['class'] .= ' uncommittable nodiff';
} else {
if (is_null($string->current)) {
// new translation
$t = $t = self::add_breaks(s($string->new));
$t = html_writer::tag('div', $t, array('class' => 'preformatted'));
$cells[3] = new html_table_cell($t . $unstagebutton);
if ($string->committable) {
$cells[3]->attributes['class'] .= ' committable new';
$committable++;
}
if (!$string->committable) {
$cells[3]->attributes['class'] .= ' uncommittable new';
}
} else {
// there is a difference
$c = s($string->current);
$n = s($string->new);
$x1 = explode(' ', $c);
$x2 = explode(' ', $n);
$t = '';
$diff = local_amos_simplediff($x1, $x2);
$numd = 0;
$numi = 0;
foreach ($diff as $k) {
// $diff is a sequence of chunks (words) $k
if (is_array($k)) {
if (!empty($k['d'])) {
$kd = implode(' ', $k['d']);
if (!empty($kd)) {
$t .= '<del>' . $kd . '</del> ';
$numd += count($k['d']);
}
}
if (!empty($k['i'])) {
$ki = implode(' ', $k['i']);
if (!empty($ki)) {
$t .= '<ins>' . $ki . '</ins> ';
$numi += count($k['i']);
}
}
} else {
$t .= $k . ' ';
}
}
if ($numi == 0 or $numd == 0 or $numd == 1 and $numi == 1) {
$cstyle = 'display:none;';
$nstyle = 'display:none;';
$tstyle = 'display:block;';
} else {
$cstyle = 'display:block;';
$nstyle = 'display:block;';
$tstyle = 'display:none;';
}
$n = html_writer::tag('ins', $n);
$n = html_writer::tag('div', self::add_breaks($n), array('class' => 'preformatted stringtext new', 'style' => $nstyle));
$c = html_writer::tag('del', $c);
$c = html_writer::tag('div', self::add_breaks($c), array('class' => 'preformatted stringtext current', 'style' => $cstyle));
$t = html_writer::tag('div', self::add_breaks($t), array('class' => 'preformatted stringtext diff', 'style' => $tstyle));
$difflink = html_writer::tag('div', '', array('class' => 'diffmode'));
$cells[3] = new html_table_cell($difflink . $n . $c . $t . $unstagebutton);
if ($string->committable) {
$cells[3]->attributes['class'] .= ' committable diff';
$committable++;
}
if (!$string->committable) {
$cells[3]->attributes['class'] .= ' uncommittable diff';
}
}
}
}
$row = new html_table_row($cells);
$table->data[] = $row;
}
$table = html_writer::table($table);
$propagateform = '';
$propagateform .= html_writer::empty_tag('input', array('name' => 'sesskey', 'value' => sesskey(), 'type' => 'hidden'));
$propagateform .= html_writer::empty_tag('input', array('name' => 'propagate', 'value' => 1, 'type' => 'hidden'));
foreach (mlang_version::list_all() as $version) {
if ($version->code < 2000) {
continue;
}
$checkbox = html_writer::checkbox('ver[]', $version->code, true, $version->label);
$propagateform .= html_writer::tag('div', $checkbox, array('class' => 'labelled_checkbox'));
}
$propagateform .= html_writer::empty_tag('input', array('value' => get_string('propagaterun', 'local_amos'), 'type' => 'submit'));
$propagateform = html_writer::tag('div', $propagateform);
$propagateform = html_writer::tag('form', $propagateform, array('method' => 'post', 'action' => $CFG->wwwroot . '/local/amos/stage.php'));
$propagateform .= html_writer::tag('legend', get_string('propagate', 'local_amos') . $this->help_icon('propagate', 'local_amos'));
$propagateform = html_writer::tag('fieldset', $propagateform, array('class' => 'propagateformwrapper protected'));
$commitform = html_writer::label(get_string('commitmessage', 'local_amos'), 'commitmessage', false);
$commitform .= html_writer::empty_tag('img', array('src' => $this->pix_url('req'), 'title' => 'Required', 'alt' => 'Required', 'class' => 'req'));
$commitform .= html_writer::empty_tag('br');
$commitform .= html_writer::tag('textarea', s($stage->presetmessage), array('id' => 'commitmessage', 'name' => 'message'));
$commitform .= html_writer::empty_tag('input', array('name' => 'sesskey', 'value' => sesskey(), 'type' => 'hidden'));
$button = html_writer::empty_tag('input', array('value' => get_string('commitbutton', 'local_amos'), 'type' => 'submit'));
$button = html_writer::tag('div', $button);
$commitform = html_writer::tag('div', $commitform . $button);
$commitform = html_writer::tag('form', $commitform, array('method' => 'post', 'action' => $CFG->wwwroot . '/local/amos/stage.php'));
$commitform .= html_writer::tag('legend', get_string('commitstage', 'local_amos') . $this->help_icon('commitstage', 'local_amos'));
$commitform = html_writer::tag('fieldset', $commitform, array('class' => 'commitformwrapper protected'));
$a = new stdClass();
$a->time = userdate(time(), get_string('strftimedaydatetime', 'langconfig'));
$stashtitle = get_string('stashtitledefault', 'local_amos', $a);
$stashform = html_writer::label(get_string('stashtitle', 'local_amos'), 'stashtitle', true);
$stashform .= html_writer::empty_tag('input', array('name' => 'sesskey', 'value' => sesskey(), 'type' => 'hidden'));
$stashform .= html_writer::empty_tag('input', array('name' => 'new', 'value' => 1, 'type' => 'hidden'));
$stashform .= html_writer::empty_tag('input', array('name' => 'name', 'value' => $stashtitle, 'type' => 'text', 'size' => 50, 'id' => 'stashtitle', 'maxlength' => 255));
$stashform .= html_writer::empty_tag('input', array('value' => get_string('stashpush', 'local_amos'), 'type' => 'submit'));
$stashform = html_writer::tag('div', $stashform);
$stashform = html_writer::tag('form', $stashform, array('method' => 'post', 'action' => $CFG->wwwroot . '/local/amos/stash.php'));
$stashform = html_writer::tag('div', $stashform, array('class' => 'stashformwrapper'));
$submiturl = new moodle_url('/local/amos/stage.php', array('submit' => 1));
$submitbutton = $this->single_button($submiturl, get_string('stagesubmit', 'local_amos'), 'post', array('class' => 'singlebutton submit'));
$pruneurl = new moodle_url('/local/amos/stage.php', array('prune' => 1));
$prunebutton = $this->single_button($pruneurl, get_string('stageprune', 'local_amos'), 'post', array('class' => 'singlebutton protected prune'));
$rebaseurl = new moodle_url('/local/amos/stage.php', array('rebase' => 1));
$rebasebutton = $this->single_button($rebaseurl, get_string('stagerebase', 'local_amos'), 'post', array('class' => 'singlebutton protected rebase'));
$unstageallurl = new moodle_url('/local/amos/stage.php', array('unstageall' => 1));
$unstageallbutton = $this->single_button($unstageallurl, get_string('stageunstageall', 'local_amos'), 'post', array('class' => 'singlebutton protected unstageall'));
$i = 0;
foreach ($stage->filterfields->fver as $fver) {
$params['fver[' . $i . ']'] = $fver;
$i++;
}
$i = 0;
foreach ($stage->filterfields->flng as $flng) {
$params['flng[' . $i . ']'] = $flng;
$i++;
}
$i = 0;
foreach ($stage->filterfields->fcmp as $fcmp) {
$params['fcmp[' . $i . ']'] = $fcmp;
$i++;
}
$params['fstg'] = 1;
$params['__lazyform_amosfilter'] = 1;
$editurl = new moodle_url('/local/amos/view.php', $params);
$editbutton = $this->single_button($editurl, get_string('stageedit', 'local_amos'), 'post', array('class' => 'singlebutton edit'));
if (empty($stage->strings)) {
$output = $this->heading(get_string('stagestringsnone', 'local_amos'), 2, 'main', 'numberofstagedstrings');
if ($stage->importform) {
$legend = html_writer::tag('legend', get_string('importfile', 'local_amos') . $this->help_icon('importfile', 'local_amos'));
ob_start();
$stage->importform->display();
$importform = ob_get_contents();
ob_end_clean();
$output .= html_writer::tag('fieldset', $legend . $importform, array('class' => 'wrappedmform importform'));
}
if ($stage->mergeform) {
$legend = html_writer::tag('legend', get_string('mergestrings', 'local_amos') . $this->help_icon('mergestrings', 'local_amos'));
ob_start();
$stage->mergeform->display();
$mergeform = ob_get_contents();
ob_end_clean();
$output .= html_writer::tag('fieldset', $legend . $mergeform, array('class' => 'wrappedmform mergeform'));
}
if ($stage->diffform) {
$legend = html_writer::tag('legend', get_string('diffstrings', 'local_amos') . $this->help_icon('diffstrings', 'local_amos'));
ob_start();
$stage->diffform->display();
$diffform = ob_get_contents();
ob_end_clean();
$output .= html_writer::tag('fieldset', $legend . $diffform, array('class' => 'wrappedmform diffform'));
}
if ($stage->executeform) {
$legend = html_writer::tag('legend', get_string('script', 'local_amos') . $this->help_icon('script', 'local_amos'));
ob_start();
$stage->executeform->display();
$executeform = ob_get_contents();
ob_end_clean();
$output .= html_writer::tag('fieldset', $legend . $executeform, array('class' => 'wrappedmform executeform'));
}
} else {
$output = '';
if (!empty($stage->stagedcontribution)) {
$output .= $this->heading_with_help(get_string('contribstaged', 'local_amos', $stage->stagedcontribution), 'contribstagedinfo', 'local_amos');
}
$a = (object) array('staged' => count($stage->strings), 'committable' => $committable);
if ($committable) {
$output .= $this->heading(get_string('stagestringssome', 'local_amos', $a), 2, 'main', 'numberofstagedstrings');
} else {
$output .= $this->heading(get_string('stagestringsnocommit', 'local_amos', $a), 2, 'main', 'numberofstagedstrings');
}
unset($a);
$justpropagated = optional_param('justpropagated', null, PARAM_INT);
// usability hack to hide the propagator just after it was used
if (is_null($justpropagated)) {
$output .= $propagateform;
} else {
if ($justpropagated == 0) {
$output .= $this->heading(get_string('propagatednone', 'local_amos'));
} else {
$output .= $this->heading(get_string('propagatedsome', 'local_amos', $justpropagated));
}
}
if ($committable) {
$output .= $commitform;
}
$legend = html_writer::tag('legend', get_string('stageactions', 'local_amos') . $this->help_icon('stageactions', 'local_amos'));
$actionbuttons = $legend . $submitbutton . $editbutton;
if ($committable) {
$actionbuttons .= $prunebutton . $rebasebutton;
}
$actionbuttons .= $unstageallbutton;
$output .= html_writer::tag('fieldset', $actionbuttons, array('class' => 'actionbuttons'));
$legend = html_writer::tag('legend', get_string('stashactions', 'local_amos') . $this->help_icon('stashactions', 'local_amos'));
$output .= html_writer::tag('fieldset', $legend . $stashform, array('class' => 'actionbuttons'));
$output .= $table;
}
$output = html_writer::tag('div', $output, array('class' => 'stagewrapper'));
return $output;
}
