tweeper.php: factor out an is_cli() function

diff --git a/tweeper.php b/tweeper.php
index ed1e1c7..37b73f5 100644 (file)
--- a/tweeper.php
+++ b/tweeper.php
@@ -261,12 +261,18 @@ class Tweeper {
   }
 }
 
+function is_cli()
+{
+  return (substr(php_sapi_name(), 0, 3) == 'cli');
+}
+
 function usage($argv)
 {
-  if (php_sapi_name() != 'cli')
-    $usage = htmlentities("{$_SERVER['SCRIPT_NAME']}?src_url=<src_url>&generate_enclosure=<0|1>");
-  else
+  if (is_cli()) {
     $usage = "{$argv[0]} [-e|-h|--help] <src_url>\n";
+  } else {
+    $usage = htmlentities("{$_SERVER['SCRIPT_NAME']}?src_url=<src_url>&generate_enclosure=<0|1>");
+  }
 
   return "usage: $usage";
 }
@@ -317,12 +323,12 @@ function parse_options_query_string()
 }
 
 
-if (php_sapi_name() != 'cli') {
-  $options = parse_options_query_string();
-  $ERROR_STREAM = fopen('php://output', 'w');
-} else {
+if (is_cli()) {
   $options = parse_options_cli($argv, $argc);
   $ERROR_STREAM = fopen('php://stderr', 'w');
+} else {
+  $options = parse_options_query_string();
+  $ERROR_STREAM = fopen('php://output', 'w');
 }
 
 if (!isset($options['src_url'])) {