Convert all fstreams to IO::Files

[builder.git] / source / sourcefile.cpp

diff --git a/source/sourcefile.cpp b/source/sourcefile.cpp
index ba37f3f59dc5d11653fe5f5a5dfe4282d6134b17..cf74356e72331e3f1a84c68f2afabc174f518d00 100644 (file)
--- a/source/sourcefile.cpp
+++ b/source/sourcefile.cpp
@@ -1,35 +1,81 @@
-#include <fstream>
-#include <msp/regex++/regex++.h>
+/* $Id$
+
+This file is part of builder
+Copyright © 2006-2007 Mikko Rasa, Mikkosoft Productions
+Distributed under the LGPL
+*/
+
+#include <iostream>
+#include <msp/fs/utils.h>
+#include <msp/io/except.h>
+#include <msp/strings/regex.h>
 #include "builder.h"
 #include "component.h"
 #include "sourcefile.h"
+#include "sourcepackage.h"
 
 using namespace std;
 using namespace Msp;
 
-#include <iostream>
-
 SourceFile::SourceFile(Builder &b, const Component *c, const string &n):
        Target(b, c?&c->get_package():0, n),
        comp(c)
 { }
 
+/**
+Parses include directives from the file and looks up the appropriate targets
+from Builder.
+*/
 void SourceFile::find_depends()
 {
-       ifstream in(name.c_str());
-       if(!in) return;
+       if(!comp)
+               return;
+
+       const SourcePackage &spkg=comp->get_package();
+       string relname=FS::relative(name, spkg.get_source()).str();
+       DependencyCache &deps_cache=spkg.get_deps_cache();
+       bool deps_found=false;
+       if(mtime<deps_cache.get_mtime())
+       {
+               try
+               {
+                       includes=deps_cache.get_deps(relname);
+                       deps_found=true;
+               }
+               catch(const KeyError &)
+               { }
+       }
+
+       if(!deps_found)
+       {
+               try
+               {
+                       IO::BufferedFile in(name);
+
+                       if(builder.get_verbose()>=4)
+                               cout<<"Reading includes from "<<name<<'\n';
 
-       Regex r_include("^[ \t]*#include[ \t]+([\"<].*)[\">]");
+                       Regex r_include("^[ \t]*#include[ \t]+([\"<].*)[\">]");
+
+                       string line;
+                       while(in.getline(line))
+                               if(RegMatch match=r_include.match(line))
+                                       includes.push_back(match[1].str);
+
+                       deps_cache.set_deps(relname, includes);
+               }
+               catch(const IO::FileNotFound &)
+               {
+                       return;
+               }
+       }
 
-       string line;
-       while(getline(in, line))
-               if(RegMatch match=r_include.match(line))
-                       includes.push_back(match[1].str());
+       const StringList &incpath=comp->get_build_info().incpath;
 
        string path=name.substr(0, name.rfind('/'));
        for(list<string>::iterator i=includes.begin(); i!=includes.end(); ++i)
        {
-               Target *hdr=builder.get_header(*i, path, comp->get_build_info().incpath);
+               Target *hdr=builder.get_header(*i, path, incpath);
                if(hdr)
                        add_depend(hdr);
        }