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FEAT: handle SHIFT and CONTROL flags with arrow keys on Posix for cha…
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…r based terminal input

(tested on macOS only)
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@Oldes
Oldes committed Aug 7, 2023
1 parent 2440567 commit 3e53cfd
Showing 1 changed file with 50 additions and 14 deletions.
64 changes: 50 additions & 14 deletions src/os/posix/dev-stdio.c
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Original file line number Diff line number Diff line change
Expand Up @@ -349,7 +349,7 @@ static void Close_StdIO_Local(void)
***********************************************************************/
{
REBEVT evt;
REBYTE c[4];
REBYTE c[8];
REBINT len;

evt.flags = 1 << EVF_HAS_CODE;
Expand All @@ -361,7 +361,7 @@ static void Close_StdIO_Local(void)
//printf("%u\n", c);
if (c[0] == '\e') {
evt.type = EVT_CONTROL;
// Escape sequences...
// Escape sequences... is there really some system in it?!
if (poll(&poller, 1, 0) <= 0) {
// no any other char
evt.data = EVK_ESCAPE;
Expand All @@ -379,12 +379,12 @@ static void Close_StdIO_Local(void)
case 'H': evt.data = EVK_HOME; goto throw_event;
}
if (c[1] == '1') {
read(Std_Inp, &c, 2);
read(Std_Inp, &c[2], 2);
//printf("%s ", c);
if(c[1] == '~') {
switch(c[0]){
if(c[3] == '~') {
switch(c[2]){
case '1': evt.data = EVK_F1; goto throw_event; //== "\e[11~"
case '2': evt.data = EVK_F2; goto throw_event;
case '2': evt.data = EVK_F2; goto throw_event; //== "\e[12~"
case '3': evt.data = EVK_F3; goto throw_event;
case '4': evt.data = EVK_F4; goto throw_event;
case '5': evt.data = EVK_F5; goto throw_event;
Expand All @@ -393,25 +393,42 @@ static void Close_StdIO_Local(void)
case '9': evt.data = EVK_F8; goto throw_event;
}
}
else if(c[2] == ';' && c[3] == '2') {
SET_FLAG(evt.flags, EVF_SHIFT);
read(Std_Inp, &c[4], 1);
switch(c[4]){
case 'C': evt.data = EVK_RIGHT; goto throw_event; //== "\e[1;2C"
case 'D': evt.data = EVK_LEFT; goto throw_event; //== "\e[1;2D"
}
}
}
else if (c[1] == '2') {
read(Std_Inp, &c, 1);
if (c[0] == '~') {
read(Std_Inp, &c[2], 1);
//printf("%s ", c);
if (c[2] == '~') {
evt.data = EVK_INSERT; goto throw_event; //== "\e[2~"
}
read(Std_Inp, &c[1], 1);
if (c[1] == '~') {
switch(c[0]){
read(Std_Inp, &c[3], 1);
//printf("%s ", c);
if (c[3] == '~') {
switch(c[2]){
case '0': evt.data = EVK_F9; goto throw_event; //== "\e[20~"
case '1': evt.data = EVK_F10; goto throw_event;
case '3': evt.data = EVK_F11; goto throw_event;
case '4': evt.data = EVK_F12; goto throw_event;
}
SET_FLAG(evt.flags, EVF_SHIFT);
switch(c[2]){
case '5': evt.data = EVK_F5; goto throw_event; //== "\e[25~"
case '6': evt.data = EVK_F6; goto throw_event;
case '8': evt.data = EVK_F7; goto throw_event;
case '9': evt.data = EVK_F8; goto throw_event;
}
}
else {
read(Std_Inp, &c[2], 1);
if (c[2] == '~' && c[0] == '0') {
switch(c[1]){
read(Std_Inp, &c[4], 1);
if (c[4] == '~' && c[2] == '0') {
switch(c[3]){
case '0': evt.data = EVK_PASTE_START; goto throw_event; //== "\e[200~"
case '1': evt.data = EVK_PASTE_END; goto throw_event; //== "\e[201~"
}
Expand All @@ -420,6 +437,7 @@ static void Close_StdIO_Local(void)
}
else if (c[1] > '2' && c[1] <= '8') {
read(Std_Inp, &c[2], 1);
//printf("%s ", c);
if (c[2] == '~') {
switch(c[1]){
case '3': evt.data = EVK_DELETE; goto throw_event; //== "\e[3~"
Expand All @@ -430,6 +448,19 @@ static void Close_StdIO_Local(void)
case '8': evt.data = EVK_END; goto throw_event;
}
}
else if (c[1] == '3') {
read(Std_Inp, &c[3], 1);
//printf("%s ", c);
if (c[3] == '~') {
SET_FLAG(evt.flags, EVF_SHIFT);
switch(c[2]){
case '1': evt.data = EVK_F9; goto throw_event; //== "\e[31~"
case '2': evt.data = EVK_F10; goto throw_event;
case '3': evt.data = EVK_F11; goto throw_event;
case '4': evt.data = EVK_F12; goto throw_event;
}
}
}
}
}
else if (c[0] == 'O') {
Expand All @@ -440,6 +471,11 @@ static void Close_StdIO_Local(void)
case 'S': evt.data = EVK_F4; goto throw_event;
}
}
else if (c[0] == 'b' || c[0] == 'f') {
SET_FLAG(evt.flags, EVF_CONTROL);
evt.data = c[0] == 'b' ? EVK_LEFT : EVK_RIGHT;
goto throw_event;
}
// what to do with unrecognized sequencies?
}
else if ((c[0] & 0x80) == 0) evt.data = c[0];
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