source/condition.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 <msp/strings/utils.h>
   9 #include "condition.h"
  10 #include "sourcepackage.h"
  11
  12 using namespace std;
  13 using namespace Msp;
  14
  15 Condition::Condition(SourcePackage &p, const string &expr):
  16         pkg(p)
  17 {
  18         vector<string> parts=split(expr);
  19
  20         for(vector<string>::iterator i=parts.begin(); i!=parts.end(); ++i)
  21         {
  22                 if(*i=="and")
  23                         continue;
  24
  25                 unsigned token=i->find_first_of("=!");
  26                 if(token==string::npos)
  27                         expression.insert(StringMap::value_type(*i, "!0"));
  28                 else if(token==0 && (*i)[0]=='!')
  29                         expression.insert(StringMap::value_type(*i, "=0"));
  30                 else
  31                         expression.insert(StringMap::value_type(i->substr(0, token), i->substr(token)));
  32         }
  33 }
  34
  35 void Condition::resolve_refs()
  36 {
  37         for(PkgRefList::iterator i=requires.begin(); i!=requires.end(); ++i)
  38                 i->resolve();
  39 }
  40
  41 bool Condition::eval()
  42 {
  43         const Config &conf=pkg.get_config();
  44
  45         bool result=true;
  46         for(StringMap::iterator i=expression.begin(); i!=expression.end(); ++i)
  47         {
  48                 bool neg=(i->second[0]=='!');
  49                 unsigned start=1;
  50                 if(i->second[1]=='=')
  51                         ++start;
  52
  53                 if((conf.get_option(i->first).value==i->second.substr(start))==neg)
  54                         result=false;
  55         }
  56
  57         return result;
  58 }
  59
  60
  61 Condition::Loader::Loader(Condition &c):
  62         cond(c)
  63 {
  64         add("require",    &Loader::require);
  65         add("build_info", &Loader::build_info);
  66 }
  67
  68 void Condition::Loader::require(const string &pkg)
  69 {
  70         cond.requires.push_back(PackageRef(cond.pkg.get_builder(), pkg));
  71 }
  72
  73 void Condition::Loader::build_info()
  74 {
  75         load_sub(cond.build_info);
  76 }