source/condition.cpp

   1 /* $Id$
   2
   3 This file is part of builder
   4 Copyright © 2007-2010  Mikko Rasa, Mikkosoft Productions
   5 Distributed under the LGPL
   6 */
   7
   8 #include <msp/strings/utils.h>
   9 #include "builder.h"
  10 #include "condition.h"
  11 #include "sourcepackage.h"
  12
  13 using namespace std;
  14 using namespace Msp;
  15
  16 Condition::Condition(SourcePackage &p, const string &expr):
  17         pkg(p)
  18 {
  19         vector<string> parts = split(expr);
  20
  21         for(vector<string>::iterator i=parts.begin(); i!=parts.end(); ++i)
  22         {
  23                 if(*i=="and")
  24                         continue;
  25
  26                 string::size_type token = i->find_first_of("=!");
  27                 if(token==string::npos)
  28                         expression.insert(StringMap::value_type(*i, "="));
  29                 else if(token==0 && (*i)[0]=='!')
  30                         expression.insert(StringMap::value_type(i->substr(1), "!"));
  31                 else
  32                         expression.insert(StringMap::value_type(i->substr(0, token), i->substr(token)));
  33         }
  34 }
  35
  36 bool Condition::eval()
  37 {
  38         const Config &conf = pkg.get_config();
  39
  40         bool result = true;
  41         for(StringMap::iterator i=expression.begin(); i!=expression.end(); ++i)
  42         {
  43                 bool neg = (i->second[0]=='!');
  44                 unsigned start = 1;
  45                 if(i->second[1]=='=')
  46                         ++start;
  47                 string value = i->second.substr(start);
  48
  49                 bool match = false;
  50                 if(conf.is_option(i->first))
  51                 {
  52                         if(value.empty())
  53                                 match = lexical_cast<bool>(conf.get_option(i->first).value);
  54                         else
  55                                 match = (conf.get_option(i->first).value==value);
  56                 }
  57                 else if(i->first=="arch")
  58                         match = pkg.get_builder().get_current_arch().match_name(value);
  59
  60                 if(match==neg)
  61                         result = false;
  62         }
  63
  64         return result;
  65 }
  66
  67
  68 Condition::Loader::Loader(Condition &c):
  69         cond(c)
  70 {
  71         add("require",    &Loader::require);
  72         add("build_info", &Loader::build_info);
  73 }
  74
  75 void Condition::Loader::require(const string &pkg)
  76 {
  77         cond.requires.push_back(pkg);
  78 }
  79
  80 void Condition::Loader::build_info()
  81 {
  82         load_sub(cond.build_info);
  83 }