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 "package.h"
  11
  12 using namespace std;
  13 using namespace Msp;
  14
  15 #include <iostream>
  16
  17 Condition::Condition(Package &p, const string &expr):
  18         pkg(p)
  19 {
  20         vector<string> parts=split(expr);
  21
  22         for(vector<string>::iterator i=parts.begin(); i!=parts.end(); ++i)
  23         {
  24                 if(*i=="and")
  25                         continue;
  26
  27                 unsigned token=i->find_first_of("=!");
  28                 if(token==string::npos)
  29                         expression.insert(StringMap::value_type(*i, "!0"));
  30                 else if(token==0 && (*i)[0]=='!')
  31                         expression.insert(StringMap::value_type(*i, "=0"));
  32                 else
  33                         expression.insert(StringMap::value_type(i->substr(0, token), i->substr(token)));
  34         }
  35 }
  36
  37 void Condition::resolve_refs()
  38 {
  39         for(PkgRefList::iterator i=requires.begin(); i!=requires.end(); ++i)
  40                 i->resolve();
  41 }
  42
  43 bool Condition::eval()
  44 {
  45         const Config &conf=pkg.get_config();
  46
  47         bool result=true;
  48         for(StringMap::iterator i=expression.begin(); i!=expression.end(); ++i)
  49         {
  50                 bool neg=(i->second[0]=='!');
  51                 unsigned start=1;
  52                 if(i->second[1]=='=')
  53                         ++start;
  54
  55                 if((conf.get_option(i->first).value==i->second.substr(start))==neg)
  56                         result=false;
  57         }
  58
  59         return result;
  60 }
  61
  62
  63 Condition::Loader::Loader(Condition &c):
  64         cond(c)
  65 {
  66         add("require",    &Loader::require);
  67         add("build_info", &Loader::build_info);
  68 }
  69
  70 void Condition::Loader::require(const string &pkg)
  71 {
  72         cond.requires.push_back(PackageRef(cond.pkg.get_builder(), pkg));
  73 }
  74
  75 void Condition::Loader::build_info()
  76 {
  77         load_sub(cond.build_info);
  78 }