source/sourcefile.cpp

   1 /* $Id$
   2
   3 This file is part of builder
   4 Copyright © 2006-2007 Mikko Rasa, Mikkosoft Productions
   5 Distributed under the LGPL
   6 */
   7
   8 #include <iostream>
   9 #include <msp/fs/utils.h>
  10 #include <msp/io/except.h>
  11 #include <msp/strings/regex.h>
  12 #include "builder.h"
  13 #include "component.h"
  14 #include "sourcefile.h"
  15 #include "sourcepackage.h"
  16
  17 using namespace std;
  18 using namespace Msp;
  19
  20 SourceFile::SourceFile(Builder &b, const Component *c, const string &n):
  21         Target(b, c?&c->get_package():0, n),
  22         comp(c)
  23 { }
  24
  25 /**
  26 Parses include directives from the file and looks up the appropriate targets
  27 from Builder.
  28 */
  29 void SourceFile::find_depends()
  30 {
  31         if(!comp)
  32                 return;
  33
  34         const SourcePackage &spkg=comp->get_package();
  35         string relname=FS::relative(name, spkg.get_source()).str();
  36         DependencyCache &deps_cache=spkg.get_deps_cache();
  37         bool deps_found=false;
  38         if(mtime<deps_cache.get_mtime())
  39         {
  40                 try
  41                 {
  42                         includes=deps_cache.get_deps(relname);
  43                         deps_found=true;
  44                 }
  45                 catch(const KeyError &)
  46                 { }
  47         }
  48
  49         if(!deps_found)
  50         {
  51                 try
  52                 {
  53                         IO::BufferedFile in(name);
  54
  55                         if(builder.get_verbose()>=4)
  56                                 cout<<"Reading includes from "<<name<<'\n';
  57
  58                         Regex r_include("^[ \t]*#include[ \t]+([\"<].*)[\">]");
  59
  60                         string line;
  61                         while(in.getline(line))
  62                                 if(RegMatch match=r_include.match(line))
  63                                         includes.push_back(match[1].str);
  64
  65                         deps_cache.set_deps(relname, includes);
  66                 }
  67                 catch(const IO::FileNotFound &)
  68                 {
  69                         return;
  70                 }
  71         }
  72
  73         const StringList &incpath=comp->get_build_info().incpath;
  74
  75         string path=name.substr(0, name.rfind('/'));
  76         for(list<string>::iterator i=includes.begin(); i!=includes.end(); ++i)
  77         {
  78                 Target *hdr=builder.get_header(*i, path, incpath);
  79                 if(hdr)
  80                         add_depend(hdr);
  81         }
  82
  83         deps_ready=true;
  84 }