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Implement copying and pasting

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This commit is contained in:
Matúš Púll 2025-04-15 16:52:59 +02:00
parent 079e7669af
commit 76eac35213
1 changed files with 74 additions and 1 deletions
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75
main.cpp
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@ -18,6 +18,8 @@ enum mode_type { INSERT, NORMAL, SELECT };
treap file;
int row = 0, col = 0;
int file_offset = 0;
int clp_r, clp_c;
treap selection;
// Accessing the file
string get_line(int r) {
@ -96,8 +98,51 @@ void split_line(int r, int s) {
new_line(r+1, newline);
}
// Copying
void copy_selection() {
// Determine first and last selected position
int start_r = row, start_c = col, end_r = clp_r, end_c = clp_c;
if(clp_r < row || (clp_r == row && clp_c < col))
start_r = clp_r, start_c = clp_c, end_r = row, end_c = col;
// Clear previous selection
selection.clear();
// Add all complete lines in between
for(int r = start_r+1; r < end_r; ++r)
selection.append(get_line(r));
// Add first line end
string start_line = get_line(start_r);
int size = ((start_r == end_r) ? end_c+1 : start_line.size()) - start_c;
string start = start_line.substr(start_c, size);
selection.insert(0, start);
// Add last line start
if(start_r < end_r) {
string end_line = get_line(end_r);
string end = end_line.substr(0, end_c+1);
selection.append(end);
}
}
// Pasting
void paste_selection() {
if(selection.size() == 0) return;
// Insert last line inside of this
insert(row, col, selection.find(selection.size()-1)->text);
if(selection.size() == 1) return;
// Insert first line in front and split
split_line(row, col);
insert(row, col, selection.find(0)->text);
if(selection.size() == 2) return;
// Insert lines
for(int i = selection.size()-2; i > 0; --i)
new_line(row, selection.find(i)->text);
}
// TODO kopirování
// TODO hledání a nahrazování
// TODO undo
@ -208,6 +253,14 @@ int main(int argc, char* argv[]) {
case 'i':
mode = INSERT;
break;
case 'v':
mode = SELECT;
clp_r = row, clp_c = col;
break;
case 'p':
paste_selection();
print_file(row);
break;
default:
break;
}
@ -234,6 +287,26 @@ int main(int argc, char* argv[]) {
break;
}
break;
case SELECT:
print_line(row);
switch(ch) {
case 'h': case 'j': case 'k': case 'l':
move_cursor(ch);
break;
case 'g':
jump(get_number());
print_file();
break;
case 'v':
copy_selection();
mode = NORMAL;
break;
default:
addch('d');
mode = NORMAL;
break;
}
break;
}
refresh();
}