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 "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                 unsigned token=i->find_first_of("=!");
  27                 if(token==string::npos)
  28                         expression.insert(StringMap::value_type(*i, "!0"));
  29                 else if(token==0 && (*i)[0]=='!')
  30                         expression.insert(StringMap::value_type(*i, "=0"));
  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
  48                 string value;
  49                 if(conf.is_option(i->first))
  50                         value=conf.get_option(i->first).value;
  51                 else if(i->first=="arch")
  52                         value=pkg.get_builder().get_current_arch().get_name();
  53
  54                 if((value==i->second.substr(start))==neg)
  55                         result=false;
  56         }
  57
  58         return result;
  59 }
  60
  61
  62 Condition::Loader::Loader(Condition &c):
  63         cond(c)
  64 {
  65         add("require",    &Loader::require);
  66         add("build_info", &Loader::build_info);
  67 }
  68
  69 void Condition::Loader::require(const string &pkg)
  70 {
  71         cond.requires.push_back(pkg);
  72 }
  73
  74 void Condition::Loader::build_info()
  75 {
  76         load_sub(cond.build_info);
  77 }