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{
***************************************************************************
* *
* This source is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This code is distributed in the hope that it will be useful, but *
* WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
* General Public License for more details. *
* *
* A copy of the GNU General Public License is available on the World *
* Wide Web at <http://www.gnu.org/copyleft/gpl.html>. You can also *
* obtain it by writing to the Free Software Foundation, *
* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
* *
***************************************************************************
Author: Mattias Gaertner
Abstract:
Demonstrating how to find all units using a unit.
}
program UsedByUnits;
{$mode objfpc}{$H+}
uses
SysUtils, Laz_AVL_Tree,
// LazUtils
LazFileUtils, LazFileCache,
// CodeTools
FileProcs, CTUnitGraph, CodeToolManager;
const
ConfigFilename = 'codetools.config';
var
Filename: String;
i: Integer;
ExpFilename: String;
UsesGraph: TUsesGraph;
Complete: boolean;
UsingUnits: TAVLTree;
AVLNode: TAVLTreeNode;
CurUnit: TUGUnit;
procedure WriteUsage;
begin
writeln('Usage:');
writeln(' ',ParamStr(0),' startunit1 <startunit2> ... targetunit');
writeln;
writeln('The startunit1 is the file name of a pasal source (e.g. a program)');
writeln('There can be multiple start units.');
writeln('The targetunit is the file name of a pascal unit which is used by');
writeln('the result.');
writeln('This tool parses recursively all uses sections. It ignores units,');
writeln('which unit search path can not reach targetunit.');
writeln('The result is a list of units that uses directly or indirectly');
writeln('the targetunit.');
writeln;
writeln('Example:');
writeln('./usedbyunits ../stdcodetools.pas ../fileprocs.pas');
Halt;
end;
begin
if (Paramcount<2) then
WriteUsage;
CodeToolBoss.SimpleInit(ConfigFilename);
UsesGraph:=CodeToolBoss.CreateUsesGraph;
UsingUnits:=nil;
try
for i:=1 to Paramcount do begin
Filename:=ParamStr(i);
if Filename='' then
WriteUsage;
ExpFilename:=TrimAndExpandFilename(Filename);
if not FileExistsCached(ExpFilename) then begin
writeln('file not found: ',Filename);
Halt;
end;
if i<Paramcount then
UsesGraph.AddStartUnit(ExpFilename)
else
UsesGraph.AddTargetUnit(ExpFilename);
end;
if not UsesGraph.Parse(true,Complete) then begin
debugln('UsesGraph.Parse failed');
end;
UsingUnits:=UsesGraph.GetUnitsTreeUsingTargets;
debugln(['Using units: ',UsingUnits.Count]);
AVLNode:=UsingUnits.FindLowest;
while AVLNode<>nil do begin
CurUnit:=TUGUnit(AVLNode.Data);
debugln('using unit: ',CurUnit.Filename);
AVLNode:=UsingUnits.FindSuccessor(AVLNode);
end;
finally
UsingUnits.Free;
UsesGraph.Free;
end;
end.
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