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/* Clipboard.cpp
Copyright (c) 2025 by TomGoodIdea
Endless Sky is free software: you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation, either version 3 of the License, or (at your option) any later version.
Endless Sky is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with
this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include "Clipboard.h"
#include <SDL2/SDL_clipboard.h>
using namespace std;
// Handle keys used for clipboard operations on inputBuffer. Return false if the keys
// don't have any functionality assigned to them. Optionally, size limit of the input buffer
// and a set of forbidden characters can be provided.
bool Clipboard::KeyDown(string &inputBuffer, SDL_Keycode key, Uint16 mod, size_t maxSize, const string &forbidden)
{
if(!(mod & KMOD_CTRL))
return false;
if(key == 'c')
Set(inputBuffer);
else if(key == 'x')
{
Set(inputBuffer);
inputBuffer.clear();
}
else if(key == 'v')
inputBuffer += Get(maxSize - inputBuffer.size(), forbidden);
else
return false;
return true;
}
// Replace the current contents with the provided string.
void Clipboard::Set(const string &text)
{
SDL_SetClipboardText(text.c_str());
}
// Get the current clipboard contents, excluding characters we don't want.
string Clipboard::Get(size_t maxSize, const string &forbidden)
{
if(!SDL_HasClipboardText())
return {};
string clipboardString;
char *clipboardBuffer = SDL_GetClipboardText();
size_t i = 0;
for(char *c = clipboardBuffer; *c && i < maxSize; ++c, ++i)
if(*c >= ' ' && *c <= '~' && forbidden.find(*c) == string::npos)
clipboardString += *c;
SDL_free(clipboardBuffer);
return clipboardString;
}
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