Switch to more uses of wcstokenizer from wcstok()

Work towards cleaning up path_get_path

complete.cpp

@@ -1056,12 +1056,8 @@ void completer_t::complete_cmd( const wcstring &str_cmd, bool use_function, bool
     if (str_cmd.empty())
         return;
         
-	wchar_t *path_cpy;
-	wchar_t *nxt_path;
-	wchar_t *state;
 	std::vector<completion_t> possible_comp;
 
-
     env_var_t cdpath = env_get_string(L"CDPATH");
     if (cdpath.missing_or_empty())
         cdpath = L".";
@@ -1090,14 +1086,10 @@ void completer_t::complete_cmd( const wcstring &str_cmd, bool use_function, bool
 			const env_var_t path = env_get_string(L"PATH");
 			if( !path.missing() )
 			{
-			
+                wcstring base_path;
-				path_cpy = wcsdup( path.c_str() );
+                wcstokenizer tokenizer(path, ARRAY_SEP_STR);
-			
+				while (tokenizer.next(base_path))
-				for( nxt_path = wcstok( path_cpy, ARRAY_SEP_STR, &state );
-				     nxt_path != 0;
-				     nxt_path = wcstok( 0, ARRAY_SEP_STR, &state) )
 				{
-                    wcstring base_path = nxt_path;
                     if (base_path.empty())
                         continue;
                         
@@ -1125,7 +1117,6 @@ void completer_t::complete_cmd( const wcstring &str_cmd, bool use_function, bool
 						}
 					}
 				}
-				free( path_cpy );
 				if (wants_description)
                     this->complete_cmd_desc( str_cmd );
 			}

path.cpp

@@ -126,37 +126,39 @@ bool path_get_path_string(const wcstring &cmd_str, wcstring &output, const env_v
 
 }
 
-wchar_t *path_get_path( const wchar_t *cmd )
+bool path_get_path_string(const wcstring &cmd, wcstring &out_path)
 {
 	int err = ENOENT;
 	
-	CHECK( cmd, 0 );
+	debug( 3, L"path_get_path( '%ls' )", cmd.c_str() );
-
+    
-	debug( 3, L"path_get_path( '%ls' )", cmd );
+    /* If the command has a slash, it must be a full path */
-
+	if (cmd.find(L'/') != wcstring::npos)
-	if(wcschr( cmd, L'/' ) != 0 )
 	{
 		if( waccess( cmd, X_OK )==0 )
 		{
 			struct stat buff;
 			if(wstat( cmd, &buff ))
 			{
-				return 0;
+				return false;
 			}
 			
 			if( S_ISREG(buff.st_mode) )
-				return wcsdup( cmd );
+            {
+				out_path = cmd;
+                return true;
+            }
 			else
 			{
 				errno = EACCES;
-				return 0;
+				return false;
 			}
 		}
 		else
 		{
 			struct stat buff;
 			wstat( cmd, &buff );
-			return 0;
+			return false;
 		}
 		
 	}
@@ -175,38 +177,17 @@ wchar_t *path_get_path( const wchar_t *cmd )
 			}
 		}
 		
-		/*
+        wcstring nxt_path;
-		  Allocate string long enough to hold the whole command
+        wcstokenizer tokenizer(path, ARRAY_SEP_STR);
-		*/
+		while (tokenizer.next(nxt_path))
-		wchar_t *new_cmd = (wchar_t *)calloc(wcslen(cmd)+path.size()+2, sizeof(wchar_t) );
-		
-		/*
-		  We tokenize a copy of the path, since strtok modifies
-		  its arguments
-		*/
-		wchar_t *path_cpy = wcsdup( path.c_str() );
-		wchar_t *state;
-			
-		if( (new_cmd==0) || (path_cpy==0) )
 		{
-			DIE_MEM();
+            if (nxt_path.empty())
-		}
+                continue;
-
+            append_path_component(nxt_path, cmd);
-		for( const wchar_t *nxt_path = wcstok( path_cpy, ARRAY_SEP_STR, &state );
+			if( waccess( nxt_path, X_OK )==0 )
-			 nxt_path != 0;
-			 nxt_path = wcstok( 0, ARRAY_SEP_STR, &state) )
-		{
-			int path_len = wcslen( nxt_path );
-			wcscpy( new_cmd, nxt_path );
-			if( new_cmd[path_len-1] != L'/' )
-			{
-				new_cmd[path_len++]=L'/';
-			}
-			wcscpy( &new_cmd[path_len], cmd );
-			if( waccess( new_cmd, X_OK )==0 )
 			{
 				struct stat buff;
-				if( wstat( new_cmd, &buff )==-1 )
+				if( wstat( nxt_path, &buff )==-1 )
 				{
 					if( errno != EACCES )
 					{
@@ -216,8 +197,8 @@ wchar_t *path_get_path( const wchar_t *cmd )
 				}
 				if( S_ISREG(buff.st_mode) )
 				{
-					free( path_cpy );
+                    out_path.swap(nxt_path);
-					return new_cmd;
+					return true;
 				}
 				err = EACCES;
 				
@@ -234,34 +215,34 @@ wchar_t *path_get_path( const wchar_t *cmd )
 					default:
 					{
 						debug( 1,
-							   MISSING_COMMAND_ERR_MSG,
+                              MISSING_COMMAND_ERR_MSG,
-							   new_cmd );
+                              nxt_path.c_str() );
 						wperror( L"access" );
 					}
 				}
 			}
 		}
-		free( new_cmd );
-		free( path_cpy );
-
 	}
-
+    
 	errno = err;
-	return 0;
+	return false;
 }
 
-bool path_get_path_string(const wcstring &cmd, wcstring &output)
+wchar_t *path_get_path(const wchar_t *cmd)
 {
-    bool success = false;
+    wcstring tmp;
-    wchar_t *tmp = path_get_path(cmd.c_str());
+    wchar_t *result = NULL;
-    if (tmp) {
+    if (cmd != NULL && path_get_path_string(cmd, tmp))
-        output = tmp;
+    {
-        free(tmp);
+        result = wcsdup(tmp.c_str());
-        success = true;
     }
-    return success;
+    return result;
 }
 
+bool path_get_path( const wcstring &cmd, wcstring &output )
+{
+    return path_get_path_string(cmd, output);
+}
 
 bool path_get_cdpath_string(const wcstring &dir_str, wcstring &result, const env_vars &vars)
 {

path.h

@@ -30,6 +30,7 @@ bool path_get_config(wcstring &path);
    \return 0 if the command can not be found, the path of the command otherwise. The result should be freed with free().
 */
 wchar_t *path_get_path( const wchar_t *cmd );
+bool path_get_path( const wcstring &cmd, wcstring &output );
 
 /** Returns whether the path can be used for an implicit cd command; if so, also returns the path by reference (if desired). This requires it to start with one of the allowed prefixes (., .., ~) and resolve to a directory. */
 bool path_can_be_implicit_cd(const wcstring &path, wcstring *out_path = NULL, const wchar_t *wd = NULL);