source/shoppinglist/main.cpp

   1 #include <map>
   2 #include <msp/core/application.h>
   3 #include <msp/core/getopt.h>
   4 #include <msp/datafile/loader.h>
   5 #include <msp/datafile/parser.h>
   6 #include <msp/io/print.h>
   7 #include "libr2c2/articlenumber.h"
   8
   9 using namespace std;
  10 using namespace Msp;
  11 using namespace R2C2;
  12
  13 class ShoppingList: public RegisteredApplication<ShoppingList>
  14 {
  15 private:
  16         class InventoryLoader: public DataFile::Loader
  17         {
  18         public:
  19                 InventoryLoader(ShoppingList &);
  20         private:
  21                 ShoppingList &sl;
  22
  23                 void track(ArticleNumber, int);
  24         };
  25
  26         class LayoutLoader: public DataFile::Loader
  27         {
  28         public:
  29                 LayoutLoader(ShoppingList &);
  30         private:
  31                 ShoppingList &sl;
  32
  33                 void track(ArticleNumber);
  34         };
  35
  36         map<ArticleNumber, unsigned> inventory;
  37         map<ArticleNumber, unsigned> layout;
  38
  39 public:
  40         ShoppingList(int, char **);
  41         int main();
  42 private:
  43         void load_inventory(const string &);
  44         void load_layout(const string &);
  45 };
  46
  47
  48 ShoppingList::ShoppingList(int argc, char **argv)
  49 {
  50         string inv_fn = "inventory";
  51         GetOpt getopt;
  52         getopt.add_option('i', "inventory", inv_fn, GetOpt::REQUIRED_ARG);
  53         getopt(argc, argv);
  54
  55         load_inventory(inv_fn);
  56         load_layout(getopt.get_args().front());
  57 }
  58
  59 int ShoppingList::main()
  60 {
  61         IO::print("// Need to get:\n");
  62         for(map<ArticleNumber, unsigned>::iterator i=layout.begin(); i!=layout.end(); ++i)
  63         {
  64                 map<ArticleNumber, unsigned>::iterator j=inventory.find(i->first);
  65                 if(j!=inventory.end())
  66                 {
  67                         if(j->second<i->second)
  68                                 IO::print("track %d %d;\n", i->first, i->second-j->second);
  69                 }
  70                 else
  71                         IO::print("track %d %d;\n", i->first, i->second);
  72         }
  73
  74         IO::print("// Pre-existing:\n");
  75         for(map<ArticleNumber, unsigned>::iterator i=layout.begin(); i!=layout.end(); ++i)
  76         {
  77                 map<ArticleNumber, unsigned>::iterator j=inventory.find(i->first);
  78                 if(j!=inventory.end())
  79                         IO::print("track %d %d;\n", i->first, min(i->second, j->second));
  80         }
  81
  82         IO::print("// Unused:\n");
  83         for(map<ArticleNumber, unsigned>::iterator i=inventory.begin(); i!=inventory.end(); ++i)
  84         {
  85                 map<ArticleNumber, unsigned>::iterator j=layout.find(i->first);
  86                 if(j!=layout.end())
  87                 {
  88                         if(j->second<i->second)
  89                                 IO::print("track %d %d;\n", i->first, i->second-j->second);
  90                 }
  91                 else
  92                         IO::print("track %d %d;\n", i->first, i->second);
  93         }
  94
  95         return 0;
  96 }
  97
  98 void ShoppingList::load_inventory(const string &fn)
  99 {
 100         IO::File in(fn);
 101         DataFile::Parser parser(in, fn);
 102         InventoryLoader il(*this);
 103         il.load(parser);
 104 }
 105
 106 void ShoppingList::load_layout(const string &fn)
 107 {
 108         IO::File in(fn);
 109         DataFile::Parser parser(in, fn);
 110         LayoutLoader ll(*this);
 111         ll.load(parser);
 112 }
 113
 114
 115 ShoppingList::InventoryLoader::InventoryLoader(ShoppingList &s):
 116         sl(s)
 117 {
 118         add("track", &InventoryLoader::track);
 119 }
 120
 121 void ShoppingList::InventoryLoader::track(ArticleNumber art_nr, int count)
 122 {
 123         sl.inventory[art_nr] += count;
 124 }
 125
 126
 127 ShoppingList::LayoutLoader::LayoutLoader(ShoppingList &s):
 128         sl(s)
 129 {
 130         add("track", &LayoutLoader::track);
 131         add("base");
 132         add("route");
 133         add("zone");
 134 }
 135
 136 void ShoppingList::LayoutLoader::track(ArticleNumber art_nr)
 137 {
 138         ++sl.layout[art_nr];
 139 }