Improvement for keybinding memory management.

I'm not respecting the sorted list anymore, but it's still good.

src/keys.cc

@@ -21,17 +21,39 @@
 #include "utf8.hh"
 #include "msg.h"
 
+#include <vector>
+#include <string>
+#include <memory>
+
 /*
  *  Local data types
  */
-typedef struct {
-   const char *name;
+struct KeyBinding_t {
+   std::string name;
    KeysCommand_t cmd;
    int modifier, key;
-} KeyBinding_t;
+
+   auto
+   value_lens() const
+   { 
+      return std::tie( key, modifier );
+   }
+
+   friend auto
+   value_lens( const KeyBinding_t &key )
+   {
+      return key.value_lens();
+   }
+
+   friend bool
+   operator < ( const KeyBinding_t &lhs, const KeyBinding_t &rhs );
+
+   friend bool
+   operator == ( const KeyBinding_t &lhs, const KeyBinding_t &rhs );
+};
 
 typedef struct {
-   const char *name;
+   std::string_view name;
    const int value;
 } Mapping_t;
 
@@ -143,7 +165,7 @@ static const KeyBinding_t default_keys[] = {
    { "zoom-reset"   , KEYS_ZOOM_RESET   , FL_CTRL   , '0'             },
 };
 
-static Dlist *bindings;
+static std::vector< std::unique_ptr< KeyBinding_t > > bindings;
 
 
 
@@ -152,20 +174,21 @@ static Dlist *bindings;
  */
 void Keys::init()
 {
-   KeyBinding_t *node;
+   std::unique_ptr< KeyBinding_t > node;
 
    // Fill our key bindings list
-   bindings = dList_new(32);
    for (uint_t i = 0; i < sizeof(default_keys) / sizeof(default_keys[0]); i++) {
       if (default_keys[i].key) {
-         node = dNew(KeyBinding_t, 1);
-         node->name = dStrdup(default_keys[i].name);
+         node = std::make_unique< KeyBinding_t >();
+         node->name = default_keys[i].name;
          node->cmd = default_keys[i].cmd;
          node->modifier = default_keys[i].modifier;
          node->key = default_keys[i].key;
-         dList_insert_sorted(bindings, node, nodeByKeyCmp);
+         bindings.push_back( std::move( node ) );
       }
    }
+
+   std::sort( begin( bindings ), end( bindings ) );
 }
 
 /**
@@ -173,24 +196,23 @@ void Keys::init()
  */
 void Keys::free()
 {
-   KeyBinding_t *node;
-
-   while ((node = (KeyBinding_t*)dList_nth_data(bindings, 0))) {
-      dFree((char*)node->name);
-      dList_remove_fast(bindings, node);
-      dFree(node);
-   }
-   dList_free(bindings);
+   bindings.clear();
 }
 
 /**
  * Compare function by {key,modifier} pairs.
  */
-int Keys::nodeByKeyCmp(const void *node, const void *key)
+bool
+operator < (const KeyBinding_t &n, const KeyBinding_t &k)
 {
-   KeyBinding_t *n = (KeyBinding_t*)node, *k = (KeyBinding_t*)key;
    _MSG("Keys::nodeByKeyCmp modifier=%d\n", k->modifier);
-   return (n->key != k->key) ? (n->key - k->key) : (n->modifier - k->modifier);
+   return value_lens( n ) < value_lens( k );
+}
+
+bool
+operator == ( const KeyBinding_t &lhs, const KeyBinding_t &rhs )
+{
+   return value_lens( lhs ) == value_lens( rhs );
 }
 
 /**
@@ -220,9 +242,10 @@ KeysCommand_t Keys::getKeyCmd()
    }
    _MSG("getKeyCmd: evkey=0x%x evtext=\'%s\' key=0x%x, mod=0x%x\n",
         Fl::event_key(), Fl::event_text(), keyNode.key, keyNode.modifier);
-   void *data = dList_find_sorted(bindings, &keyNode, nodeByKeyCmp);
-   if (data)
-      ret = ((KeyBinding_t*)data)->cmd;
+   auto data= std::find_if( begin( bindings ), end( bindings ),
+         [&]( const auto &node ){ return *node == keyNode; } );
+   if ( data != end( bindings ) )
+      ret = data->get()->cmd;
    return ret;
 }
 
@@ -231,15 +254,14 @@ KeysCommand_t Keys::getKeyCmd()
  */
 void Keys::delKeyCmd(int key, int mod)
 {
-   KeyBinding_t keyNode, *node;
+   KeyBinding_t keyNode;
    keyNode.key = key;
    keyNode.modifier = mod;
 
-   node = (KeyBinding_t*) dList_find_sorted(bindings, &keyNode, nodeByKeyCmp);
-   if (node) {
-      dList_remove(bindings, node);
-      dFree((char*)node->name);
-      dFree(node);
+   auto data= std::find_if( begin( bindings ), end( bindings ),
+      [&]( const auto &node ){ return *node == keyNode; } );
+   if (data != end( bindings )) {
+      bindings.erase( data );
    }
 }
 
@@ -252,7 +274,7 @@ int Keys::getKeyCode(char *keyName)
 {
    uint_t i;
    for (i = 0; i < sizeof(keyNames) / sizeof(keyNames[0]); i++) {
-      if (!dStrAsciiCasecmp(keyNames[i].name, keyName)) {
+      if (!dStrAsciiCasecmp(keyNames[i].name.data(), keyName)) {
          return keyNames[i].value;
       }
    }
@@ -269,7 +291,7 @@ KeysCommand_t Keys::getCmdCode(const char *commandName)
    uint_t i;
 
    for (i = 0; i < sizeof(default_keys) / sizeof(KeyBinding_t); i++) {
-      if (!dStrAsciiCasecmp(default_keys[i].name, commandName))
+      if (!dStrAsciiCasecmp(default_keys[i].name.c_str(), commandName))
          return default_keys[i].cmd;
    }
    return KEYS_INVALID;
@@ -283,7 +305,7 @@ int Keys::getModifier(char *modifierName)
 {
    uint_t i;
    for (i = 0; i < sizeof(modifierNames) / sizeof(modifierNames[0]); i++) {
-      if (!dStrAsciiCasecmp(modifierNames[i].name, modifierName)) {
+      if (!dStrAsciiCasecmp(modifierNames[i].name.data(), modifierName)) {
          return modifierNames[i].value;
       }
    }
@@ -297,10 +319,10 @@ int Keys::getModifier(char *modifierName)
  */
 int Keys::getShortcut(KeysCommand_t cmd)
 {
-   int len = dList_length(bindings);
+   int len = bindings.size();
 
    for (int i = 0; i < len; i++) {
-      KeyBinding_t *node = (KeyBinding_t*)dList_nth_data(bindings, i);
+      const KeyBinding_t *const node = bindings.at( i ).get();
       if (cmd == node->cmd)
          return node->modifier + node->key;
    }
@@ -362,12 +384,13 @@ void Keys::parseKey(char *key, char *commandName)
    if (keycode) {
       delKeyCmd(keycode, keymod);
       if (symcode != KEYS_NOP) {
-         KeyBinding_t *node = dNew(KeyBinding_t, 1);
-         node->name = dStrdup(commandName);
+         auto node = std::make_unique< KeyBinding_t >();
+         node->name = commandName;
          node->cmd = symcode;
          node->modifier = keymod;
          node->key = keycode;
-         dList_insert_sorted(bindings, node, nodeByKeyCmp);
+         bindings.push_back( std::move( node ) );
+         std::sort( begin( bindings ), end( bindings ) );
          _MSG("parseKey: Adding key=%d, mod=%d\n", node->key, node->modifier);
       }
    }