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 bool Condition::eval()
  36 {
  37         const Config &conf=pkg.get_config();
  38
  39         bool result=true;
  40         for(StringMap::iterator i=expression.begin(); i!=expression.end(); ++i)
  41         {
  42                 bool neg=(i->second[0]=='!');
  43                 unsigned start=1;
  44                 if(i->second[1]=='=')
  45                         ++start;
  46
  47                 if((conf.get_option(i->first).value==i->second.substr(start))==neg)
  48                         result=false;
  49         }
  50
  51         return result;
  52 }
  53
  54
  55 Condition::Loader::Loader(Condition &c):
  56         cond(c)
  57 {
  58         add("require",    &Loader::require);
  59         add("build_info", &Loader::build_info);
  60 }
  61
  62 void Condition::Loader::require(const string &pkg)
  63 {
  64         cond.requires.push_back(pkg);
  65 }
  66
  67 void Condition::Loader::build_info()
  68 {
  69         load_sub(cond.build_info);
  70 }