Make it possible to cancel a long-winded wildcard match by pressing ^C

darcs-hash:20070109164705-ac50b-d8bf2c22e9ecb6bccec6892da266016dcae79a4c.gz

expand.c

@@ -1747,6 +1747,15 @@ int expand_string( void *context,
 						al_truncate( out, 0 );
 						break;
 					}
+
+					case -1:
+					{
+						al_foreach( out, &free );
+						al_destroy( in );
+						al_destroy( out );
+						return EXPAND_ERROR;
+					}
+					
 				}
 			}
 			else

wildcard.c

@@ -447,6 +447,11 @@ int wildcard_expand( const wchar_t *wc,
 	
 	//	debug( 3, L"WILDCARD_EXPAND %ls in %ls", wc, base_dir );
 
+	if( reader_interrupted() )
+	{
+		return -1;
+	}
+	
 	if( !wc || !base_dir || !out)
 	{
 		debug( 2, L"Got null string on line %d of file %s", __LINE__, __FILE__ );
@@ -700,6 +705,7 @@ int wildcard_expand( const wchar_t *wc,
 				struct stat buf;			
 				char *dir_str;
 				int stat_res;
+				int new_res;
 
 				wcscpy(&new_dir[base_len], name );
 				dir_str = wcs2str( new_dir );
@@ -735,10 +741,18 @@ int wildcard_expand( const wchar_t *wc,
 									}
 								}
 								
-								res |= wildcard_expand( new_wc,
-														new_dir, 
-														flags, 
-														out );
+								new_res = wildcard_expand( new_wc,
+														   new_dir, 
+														   flags, 
+														   out );
+
+								if( new_res == -1 )
+								{
+									res = -1;
+									break;
+								}								
+								res |= new_res;
+								
 							}
 							
 							/*
@@ -746,10 +760,17 @@ int wildcard_expand( const wchar_t *wc,
 							*/
 							if( partial_match )
 							{
-								res |= wildcard_expand( wcschr( wc, ANY_STRING_RECURSIVE ), 
+								new_res = wildcard_expand( wcschr( wc, ANY_STRING_RECURSIVE ), 
 														new_dir,
 														flags | WILDCARD_RECURSIVE, 
 														out );
+								if( new_res == -1 )
+								{
+									res = -1;
+									break;
+								}								
+								res |= new_res;
+								
 							}
 						}								
 					}

wildcard.h

@@ -60,7 +60,7 @@ enum
 	\param flags flags for the search. Can be any combination of ACCEPT_INCOMPLETE and EXECUTABLES_ONLY
 	\param out The list in which to put the output
 
-	\return 1 if matches where found, 0 otherwise.
+	\return 1 if matches where found, 0 otherwise. Return -1 on abort (I.e. ^C was pressed).
    
 */
 int wildcard_expand( const wchar_t *wc,