source/condition.cpp

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