Added insert_buysell.

galaxy.h

@@ -6,10 +6,10 @@
 #include <iostream>
 #include <ostream>
 #include <regex>
+#include <set>
 #include <stdexcept>
 #include <string>
 #include <vector>
-#include <set>
 
 #include "yaml-cpp/yaml.h"
 
@@ -124,6 +124,34 @@ constexpr buysell_text text_from_type(uint8_t type) {
   }
 }
 
+constexpr buysell invert_buysell(const buysell market) {
+  if (market.foe[0]) {
+    if (market.foe[1]) {
+      if (market.foe[2]) {
+        return {false, false, false};  // BBB TTT
+      } else
+        return {false, false, true};  // BBS TTF
+    } else {
+      if (market.foe[2]) {
+        return {false, true, false};  // BSB TFT
+      } else
+        return {false, true, true};  // BSS TFF
+    }
+  } else {
+    if (market.foe[1]) {
+      if (market.foe[2]) {
+        return {true, false, false};  // SBB FTT
+      } else
+        return {true, false, true};  // SBS FTF
+    } else {
+      if (market.foe[2]) {
+        return {true, true, false};  // SSB FFT
+      } else
+        return {true, true, true};  // SSS FFF
+    }
+  }
+}
+
 constexpr uint8_t type_from_buysell(const buysell market) {
   if (market.foe[0]) {
     if (market.foe[1]) {
@@ -168,13 +196,13 @@ struct port parse_portcim(const std::string line);
 
 class Galaxy {
  public:
- Galaxy();
- ~Galaxy();
+  Galaxy();
+  ~Galaxy();
 
   void reset(void);
   YAML::Node config;
   YAML::Node meta;
-  
+
   // warps;
   // ports;
   std::map<sector_type, port> ports;

test-galaxy.cpp

@@ -52,6 +52,22 @@ TEST(ports, get_buysell) {
   }
 }
 
+TEST(ports, invert_buysell) {
+  for (int type = 1; type < 10; ++type) {
+    buysell expected;
+    const char *flags;
+
+    flags = port_classes[type];
+    for (int x = 0; x < 3; ++x)
+      expected.foe[x] = flags[x] != 'B';
+    buysell result = get_buysell(type);
+    buysell invert = invert_buysell(result);
+    for (int x = 0; x < 3; ++x)
+      EXPECT_EQ(invert.foe[x], expected.foe[x])
+          << "type: " << type << " pos: " << x;
+  }
+}
+
 TEST(ports, text_from_type) {
   for (int type = 1; type < 10; ++type) {
     buysell_text expected;