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Add some real line editing operations

master
C. McEnroe 2020-02-07 01:55:26 -05:00
parent 5470254fa5
commit af244ad3cd
3 changed files with 41 additions and 4 deletions
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5
chat.h
View File

@ -133,7 +133,12 @@ void uiFormat(
) __attribute__((format(printf, 4, 5)));
enum Edit {
EditHome,
EditEnd,
EditLeft,
EditRight,
EditKill,
EditErase,
EditInsert,
EditEnter,
};

26
edit.c
View File

@ -45,13 +45,33 @@ char *editTail(void) {
return mbs;
}
static void reserve(size_t index, size_t count) {
if (len + count > Cap) return;
memmove(&buf[index + count], &buf[index], sizeof(*buf) * (len - index));
len += count;
}
static void delete(size_t index, size_t count) {
if (index + count > len) return;
memmove(
&buf[index], &buf[index + count], sizeof(*buf) * (len - index - count)
);
len -= count;
}
void edit(size_t id, enum Edit op, wchar_t ch) {
switch (op) {
break; case EditHome: pos = 0;
break; case EditEnd: pos = len;
break; case EditLeft: if (pos) pos--;
break; case EditRight: if (pos < len) pos++;
break; case EditKill: len = pos = 0;
break; case EditErase: if (pos) delete(--pos, 1);
break; case EditInsert: {
if (len == Cap) break;
buf[pos++] = ch;
len++;
reserve(pos, 1);
if (pos < Cap) buf[pos++] = ch;
}
break; case EditEnter: {
pos = 0;

12
ui.c
View File

@ -546,12 +546,20 @@ void uiShowNum(size_t num) {
}
static void keyCode(int code) {
size_t id = windows.active->id;
switch (code) {
break; case KEY_RESIZE: resize();
break; case KeyFocusIn: unmark();
break; case KeyFocusOut: windows.active->mark = true;
break; case KeyPasteOn:; // TODO
break; case KeyPasteOff:; // TODO
break; case KEY_BACKSPACE: edit(id, EditErase, 0);
break; case KEY_END: edit(id, EditEnd, 0);
break; case KEY_ENTER: edit(id, EditEnter, 0);
break; case KEY_HOME: edit(id, EditHome, 0);
break; case KEY_LEFT: edit(id, EditLeft, 0);
break; case KEY_RIGHT: edit(id, EditRight, 0);
}
}
@ -567,6 +575,10 @@ static void keyMeta(wchar_t ch) {
static void keyCtrl(wchar_t ch) {
size_t id = windows.active->id;
switch (ch) {
break; case L'?': edit(id, EditErase, 0);
break; case L'A': edit(id, EditHome, 0);
break; case L'E': edit(id, EditEnd, 0);
break; case L'H': edit(id, EditErase, 0);
break; case L'J': edit(id, EditEnter, 0);
break; case L'L': clearok(curscr, true);
break; case L'U': edit(id, EditKill, 0);