source/condition.cpp

   1 #include <msp/strings/utils.h>
   2 #include "condition.h"
   3 #include "package.h"
   4
   5 using namespace std;
   6 using namespace Msp;
   7
   8 #include <iostream>
   9
  10 Condition::Condition(Package &p, const string &expr):
  11         pkg(p)
  12 {
  13         vector<string> parts=split(expr);
  14
  15         for(vector<string>::iterator i=parts.begin(); i!=parts.end(); ++i)
  16         {
  17                 if(*i=="and")
  18                         continue;
  19
  20                 unsigned token=i->find_first_of("=!");
  21                 if(token==string::npos)
  22                         expression.insert(StringMap::value_type(*i, "!0"));
  23                 else if(token==0 && (*i)[0]=='!')
  24                         expression.insert(StringMap::value_type(*i, "=0"));
  25                 else
  26                         expression.insert(StringMap::value_type(i->substr(0, token), i->substr(token)));
  27         }
  28 }
  29
  30 void Condition::resolve_refs()
  31 {
  32         for(PkgRefList::iterator i=requires.begin(); i!=requires.end(); ++i)
  33                 i->resolve();
  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                 if((conf.get_option(i->first).value==i->second.substr(start))==neg)
  49                         result=false;
  50         }
  51
  52         return result;
  53 }
  54
  55
  56 Condition::Loader::Loader(Condition &c):
  57         cond(c)
  58 {
  59         add("require",    &Loader::require);
  60         add("build_info", &Loader::build_info);
  61 }
  62
  63 void Condition::Loader::require(const string &pkg)
  64 {
  65         cond.requires.push_back(PackageRef(cond.pkg.get_builder(), pkg));
  66 }
  67
  68 void Condition::Loader::build_info()
  69 {
  70         load_sub(cond.build_info);
  71 }