Change view import/export if no zip extension

Show a select with only one choice is there is no zip extension on
the server.
Fix typo.

See https://github.com/marienfressinaud/FreshRSS/issues/494

app/Controllers/importExportController.php

@@ -329,11 +329,13 @@ class FreshRSS_importExport_Controller extends Minz_ActionController {
 
 			foreach ($export_feeds as $feed_id) {
 				$feed = $this->feedDAO->searchById($feed_id);
-				$filename = 'feed_' . $feed->category() . '_'
-				          . $feed->id() . '.json';
-				$export_files[$filename] = $this->generateArticles(
-					'feed', $feed
-				);
+				if ($feed) {
+					$filename = 'feed_' . $feed->category() . '_'
+					          . $feed->id() . '.json';
+					$export_files[$filename] = $this->generateArticles(
+						'feed', $feed
+					);
+				}
 			}
 
 			$nb_files = count($export_files);

app/views/importExport/index.phtml

@@ -1,12 +1,12 @@
-<?php $this->partial ('aside_feed'); ?>
+<?php $this->partial('aside_feed'); ?>
 
 <div class="post ">
-	<a href="<?php echo _url ('index', 'index'); ?>"><?php echo Minz_Translate::t ('back_to_rss_feeds'); ?></a>
+	<a href="<?php echo _url('index', 'index'); ?>"><?php echo _t('back_to_rss_feeds'); ?></a>
 
 	<form method="post" action="<?php echo _url('importExport', 'import'); ?>" enctype="multipart/form-data">
-		<legend><?php echo Minz_Translate::t ('import'); ?></legend>
+		<legend><?php echo _t('import'); ?></legend>
 		<div class="form-group">
-			<label class="group-name" for="file"><?php echo Minz_Translate::t ('file_to_import'); ?></label>
+			<label class="group-name" for="file"><?php echo _t('file_to_import'); ?></label>
 			<div class="group-controls">
 				<input type="file" name="file" id="file" />
 			</div>
@@ -14,27 +14,34 @@
 
 		<div class="form-group form-actions">
 			<div class="group-controls">
-				<button type="submit" class="btn btn-important"><?php echo Minz_Translate::t ('import'); ?></button>
+				<button type="submit" class="btn btn-important"><?php echo _t('import'); ?></button>
 			</div>
 		</div>
 	</form>
 
 	<?php if (count($this->feeds) > 0) { ?>
 	<form method="post" action="<?php echo _url('importExport', 'export'); ?>">
-		<legend><?php echo Minz_Translate::t ('export'); ?></legend>
+		<legend><?php echo _t('export'); ?></legend>
 		<div class="form-group">
 			<div class="group-controls">
 				<label class="checkbox" for="export_opml">
 					<input type="checkbox" name="export_opml" id="export_opml" value="1" checked="checked" />
-					<?php echo Minz_Translate::t ('export_opml'); ?>
+					<?php echo _t('export_opml'); ?>
 				</label>
 
 				<label class="checkbox" for="export_starred">
 					<input type="checkbox" name="export_starred" id="export_starred" value="1" checked="checked" />
-					<?php echo Minz_Translate::t ('export_starred'); ?>
+					<?php echo _t('export_starred'); ?>
 				</label>
 
-				<select name="export_feeds[]" size="<?php echo min(10, count($this->feeds)); ?>" multiple="multiple">
+				<?php
+					$select_args = '';
+					if (extension_loaded('zip')) {
+						$select_args = ' size="<?php echo min(10, count($this->feeds)); ?>" multiple="multiple"';
+					}
+				?>
+				<select name="export_feeds[]"<?php echo $select_arg; ?>>
+					<?php echo extension_loaded('zip')? '': '<option value="lolol"></option>'; ?>
 					<?php foreach ($this->feeds as $feed) { ?>
 					<option value="<?php echo $feed->id(); ?>"><?php echo $feed->name(); ?></option>
 					<?php } ?>
@@ -44,7 +51,7 @@
 
 		<div class="form-group form-actions">
 			<div class="group-controls">
-				<button type="submit" class="btn btn-important"><?php echo Minz_Translate::t ('export'); ?></button>
+				<button type="submit" class="btn btn-important"><?php echo _t('export'); ?></button>
 			</div>
 		</div>
 	</form>