Terminal emulator with all the bells and whistles https://www.enlightenment.org
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#include "private.h"
#include <Elementary.h>
#include <stdint.h>
#include "col.h"
#include "termio.h"
#include "termpty.h"
#include "termptydbl.h"
#include "termptyesc.h"
#include "termptyops.h"
#include "termptyext.h"
#if defined(ENABLE_TESTS)
#include "tytest.h"
#endif
#undef CRITICAL
#undef ERR
#undef WRN
#undef INF
#undef DBG
#define CRITICAL(...) EINA_LOG_DOM_CRIT(_termpty_log_dom, __VA_ARGS__)
#define ERR(...) EINA_LOG_DOM_ERR(_termpty_log_dom, __VA_ARGS__)
#define WRN(...) EINA_LOG_DOM_WARN(_termpty_log_dom, __VA_ARGS__)
#define INF(...) EINA_LOG_DOM_INFO(_termpty_log_dom, __VA_ARGS__)
#define DBG(...) EINA_LOG_DOM_DBG(_termpty_log_dom, __VA_ARGS__)
#define ST 0x9c // String Terminator
#define BEL 0x07 // Bell
#define ESC 033 // Escape
#define DEL 127
#define UTF8CC 0xc2
/* XXX: all handle_ functions return the number of bytes successfully read, 0
* if not enough bytes could be read
*/
static const char *const ASCII_CHARS_TABLE[] =
{
"NUL", // '\0'
"SOH", // '\001'
"STX", // '\002'
"ETX", // '\003'
"EOT", // '\004'
"ENQ", // '\005'
"ACK", // '\006'
"BEL", // '\007'
"BS", // '\010'
"HT", // '\011'
"LF", // '\012'
"VT", // '\013'
"FF", // '\014'
"CR" , // '\015'
"SO", // '\016'
"SI", // '\017'
"DLE", // '\020'
"DC1", // '\021'
"DC2", // '\022'
"DC3", // '\023'
"DC4", // '\024'
"NAK", // '\025'
"SYN", // '\026'
"ETB", // '\027'
"CAN", // '\030'
"EM", // '\031'
"SUB", // '\032'
"ESC", // '\033'
"FS", // '\034'
"GS", // '\035'
"RS", // '\036'
"US" // '\037'
};
static const char *
_safechar(unsigned int c)
{
static char _str[9];
// This should avoid 'BEL' and 'ESC' in particular, which would
// have side effects in the parent terminal (esp. ESC).
if (c < (sizeof(ASCII_CHARS_TABLE) / sizeof(ASCII_CHARS_TABLE[0])))
return ASCII_CHARS_TABLE[c];
if (c == DEL)
return "DEL";
// The rest should be safe (?)
snprintf(_str, 9, "%c", c);
_str[8] = '\0';
return _str;
}
enum csi_arg_error {
CSI_ARG_NO_VALUE = 1,
CSI_ARG_ERROR = 2
};
static int
_csi_arg_get(Termpty *ty, Eina_Unicode **ptr)
{
Eina_Unicode *b = *ptr;
int sum = 0;
if ((b == NULL) || (*b == '\0'))
{
*ptr = NULL;
return -CSI_ARG_NO_VALUE;
}
/* Skip potential '?', '>'.... */
while ((*b) && ( (*b) != ';' && ((*b) < '0' || (*b) > '9')))
b++;
if (*b == ';')
{
b++;
*ptr = b;
return -CSI_ARG_NO_VALUE;
}
if (*b == '\0')
{
*ptr = NULL;
return -CSI_ARG_NO_VALUE;
}
while ((*b >= '0') && (*b <= '9'))
{
if (sum > INT32_MAX/10 )
{
ERR("Invalid sequence: argument is too large");
ty->decoding_error = EINA_TRUE;
goto error;
}
sum *= 10;
sum += *b - '0';
b++;
}
if ((*b == ';') || (*b == ':'))
{
if (b[1])
b++;
*ptr = b;
}
else if (*b == '\0')
{
*ptr = NULL;
}
else
{
*ptr = b;
}
return sum;
error:
ty->decoding_error = EINA_TRUE;
*ptr = NULL;
return -CSI_ARG_ERROR;
}
static void
_tab_forward(Termpty *ty, int n)
{
int cx = ty->cursor_state.cx;
for (; n > 0; n--)
{
do
{
cx++;
}
while ((cx < ty->w) && (!TAB_TEST(ty, cx)));
}
ty->cursor_state.cx = cx;
TERMPTY_RESTRICT_FIELD(ty->cursor_state.cx, 0, ty->w);
}
static void
_cursor_to_start_of_line(Termpty *ty)
{
ty->cursor_state.cx = ty->termstate.left_margin;
}
static void
_handle_cursor_control(Termpty *ty, const Eina_Unicode *cc)
{
switch (*cc)
{
case 0x07: // BEL '\a' (bell)
if (ty->cb.bell.func) ty->cb.bell.func(ty->cb.bell.data);
return;
case 0x08: // BS '\b' (backspace)
DBG("->BS");
ty->termstate.wrapnext = 0;
ty->cursor_state.cx--;
TERMPTY_RESTRICT_FIELD(ty->cursor_state.cx, 0, ty->w);
return;
case 0x09: // HT '\t' (horizontal tab)
DBG("->HT");
_tab_forward(ty, 1);
return;
case 0x0a: // LF '\n' (new line)
case 0x0b: // VT '\v' (vertical tab)
case 0x0c: // FF '\f' (form feed)
DBG("->LF");
ty->termstate.wrapnext = 0;
if (ty->termstate.crlf)
_cursor_to_start_of_line(ty);
ty->cursor_state.cy++;
termpty_text_scroll_test(ty, EINA_TRUE);
return;
case 0x0d: // CR '\r' (carriage ret)
DBG("->CR");
if (ty->cursor_state.cx != 0)
{
ty->termstate.had_cr_x = ty->cursor_state.cx;
ty->termstate.had_cr_y = ty->cursor_state.cy;
ty->termstate.wrapnext = 0;
}
_cursor_to_start_of_line(ty);
return;
default:
return;
}
}
static void
_switch_to_alternative_screen(Termpty *ty, int mode)
{
// swap screen content now
if (mode != ty->altbuf)
termpty_screen_swap(ty);
}
static void
_move_cursor_to_origin(Termpty *ty)
{
if (ty->termstate.restrict_cursor)
{
ty->cursor_state.cx = ty->termstate.left_margin;
TERMPTY_RESTRICT_FIELD(ty->cursor_state.cx, 0, ty->w);
ty->cursor_state.cy = ty->termstate.top_margin;
TERMPTY_RESTRICT_FIELD(ty->cursor_state.cy, 0, ty->h);
}
else
{
ty->cursor_state.cx = 0;
ty->cursor_state.cy = 0;
}
}
static void
_handle_esc_csi_reset_mode(Termpty *ty, Eina_Unicode cc, Eina_Unicode *b,
const Eina_Unicode * const end)
{
int mode = 0, priv = 0, arg;
if (cc == 'h')
mode = 1;
if (*b == '?')
{
priv = 1;
b++;
}
if (priv) /* DEC Private Mode Reset (DECRST) */
{
while (b && b <= end)
{
arg = _csi_arg_get(ty, &b);
// complete-ish list here:
// http://ttssh2.sourceforge.jp/manual/en/about/ctrlseq.html
switch (arg)
{
case -CSI_ARG_ERROR:
return;
/* TODO: -CSI_ARG_NO_VALUE */
case 1:
ty->termstate.appcursor = mode;
break;
case 2:
ty->termstate.kbd_lock = mode;
break;
case 3: // 132 column mode… should we handle this?
#if defined(SUPPORT_80_132_COLUMNS)
if (ty->termstate.att.is_80_132_mode_allowed)
{
/* ONLY FOR TESTING PURPOSE FTM */
Evas_Object *wn;
int w, h;
wn = termio_win_get(ty->obj);
elm_win_size_step_get(wn, &w, &h);
evas_object_resize(wn,
4 +
(mode ? 132 : 80) * w,
4 + ty->h * h);
termpty_resize(ty, mode ? 132 : 80,
ty->h);
termpty_reset_state(ty);
termpty_clear_screen(ty,
TERMPTY_CLR_ALL);
}
#endif
break;
case 4:
WRN("TODO: scrolling mode (DECSCLM): %i", mode);
ty->decoding_error = EINA_TRUE;
break;
case 5:
ty->termstate.reverse = mode;
break;
case 6:
/* DECOM */
if (mode)
{
/* set, within margins */
ty->termstate.restrict_cursor = 1;
}
else
{
ty->termstate.restrict_cursor = 0;
}
_move_cursor_to_origin(ty);
DBG("DECOM: mode (%d): cursor is at 0,0"
" cursor limited to screen/start point"
" for line #'s depends on top margin",
mode);
break;
case 7:
DBG("set wrap mode to %i", mode);
ty->termstate.wrap = mode;
break;
case 8:
ty->termstate.no_autorepeat = !mode;
DBG("auto repeat %i", mode);
break;
case 9:
DBG("set mouse (X10) %i", mode);
if (mode) ty->mouse_mode = MOUSE_X10;
else ty->mouse_mode = MOUSE_OFF;
break;
case 12: // ignore
WRN("TODO: set blinking cursor to (stop?) %i or local echo (ignored)", mode);
break;
case 19: // never seen this - what to do?
WRN("TODO: set print extent to full screen");
ty->decoding_error = EINA_TRUE;
break;
case 20: // crfl==1 -> cur moves to col 0 on LF, FF or VT, ==0 -> mode is cr+lf
ty->termstate.crlf = mode;
break;
case 25:
ty->termstate.hide_cursor = !mode;
DBG("hide cursor: %d", !mode);
break;
case 30: // ignore
WRN("TODO: set scrollbar mapping %i", mode);
ty->decoding_error = EINA_TRUE;
break;
case 33: // ignore
WRN("TODO: Stop cursor blink %i", mode);
break;
case 34: // ignore
WRN("TODO: Underline cursor mode %i", mode);
ty->decoding_error = EINA_TRUE;
break;
case 35: // ignore
WRN("TODO: set shift keys %i", mode);
ty->decoding_error = EINA_TRUE;
break;
case 38: // ignore
WRN("TODO: switch to tek window %i", mode);
ty->decoding_error = EINA_TRUE;
break;
case 40:
DBG("Allow 80 -> 132 Mode %i", mode);
#if defined(SUPPORT_80_132_COLUMNS)
ty->termstate.att.is_80_132_mode_allowed = mode;
#endif
break;
case 45: // ignore
WRN("TODO: Reverse-wraparound Mode");
ty->decoding_error = EINA_TRUE;
break;
case 47:
_switch_to_alternative_screen(ty, mode);
break;
case 59: // ignore
WRN("TODO: kanji terminal mode %i", mode);
ty->decoding_error = EINA_TRUE;
break;
case 66:
WRN("TODO: app keypad mode %i", mode);
ty->decoding_error = EINA_TRUE;
break;
case 67:
ty->termstate.send_bs = mode;
DBG("backspace send bs not del = %i", mode);
break;
case 69:
ty->termstate.lr_margins = mode;
if (!mode)
{
ty->termstate.left_margin = 0;
ty->termstate.right_margin = 0;
}
break;
case 1000:
if (mode) ty->mouse_mode = MOUSE_NORMAL;
else ty->mouse_mode = MOUSE_OFF;
DBG("set mouse (press+release only) to %i", mode);
break;
case 1001:
WRN("TODO: x11 mouse highlighting %i", mode);
ty->decoding_error = EINA_TRUE;
break;
case 1002:
if (mode) ty->mouse_mode = MOUSE_NORMAL_BTN_MOVE;
else ty->mouse_mode = MOUSE_OFF;
DBG("set mouse (press+release+motion while pressed) %i", mode);
break;
case 1003:
if (mode) ty->mouse_mode = MOUSE_NORMAL_ALL_MOVE;
else ty->mouse_mode = MOUSE_OFF;
DBG("set mouse (press+release+all motion) %i", mode);
break;
case 1004: // i dont know what focus repporting is?
WRN("TODO: enable focus reporting %i", mode);
ty->decoding_error = EINA_TRUE;
break;
case 1005:
if (mode) ty->mouse_ext = MOUSE_EXT_UTF8;
else ty->mouse_ext = MOUSE_EXT_NONE;
DBG("set mouse (xterm utf8 style) %i", mode);
break;
case 1006:
if (mode) ty->mouse_ext = MOUSE_EXT_SGR;
else ty->mouse_ext = MOUSE_EXT_NONE;
DBG("set mouse (xterm sgr style) %i", mode);
break;
case 1010: // ignore
WRN("TODO: set home on tty output %i", mode);
ty->decoding_error = EINA_TRUE;
break;
case 1012: // ignore
WRN("TODO: set home on tty input %i", mode);
ty->decoding_error = EINA_TRUE;
break;
case 1015:
if (mode) ty->mouse_ext = MOUSE_EXT_URXVT;
else ty->mouse_ext = MOUSE_EXT_NONE;
DBG("set mouse (rxvt-unicode style) %i", mode);
break;
case 1034: // ignore
/* libreadline6 emits it but it shouldn't.
See http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=577012
*/
DBG("Ignored screen mode %i", arg);
ty->decoding_error = EINA_TRUE;
break;
case 1047:
if (!mode && ty->altbuf)
/* clear screen before switching back to normal */
termpty_clear_screen(ty, TERMPTY_CLR_ALL);
_switch_to_alternative_screen(ty, mode);
break;
case 1048:
termpty_cursor_copy(ty, mode);
break;
case 1049:
if (mode)
{
// switch to altbuf
termpty_cursor_copy(ty, mode);
_switch_to_alternative_screen(ty, mode);
if (ty->altbuf)
/* clear screen before switching back to normal */
termpty_clear_screen(ty, TERMPTY_CLR_ALL);
}
else
{
if (ty->altbuf)
/* clear screen before switching back to normal */
termpty_clear_screen(ty, TERMPTY_CLR_ALL);
_switch_to_alternative_screen(ty, mode);
termpty_cursor_copy(ty, mode);
}
break;
case 2004:
ty->bracketed_paste = mode;
break;
case 7727: // ignore
WRN("TODO: enable application escape mode %i", mode);
ty->decoding_error = EINA_TRUE;
break;
case 7786: // ignore
WRN("TODO: enable mouse wheel -> cursor key xlation %i", mode);
ty->decoding_error = EINA_TRUE;
break;
default:
WRN("Unhandled DEC Private Reset Mode arg %i", arg);
ty->decoding_error = EINA_TRUE;
break;
}
}
}
else /* Reset Mode (RM) */
{
while (b && b <= end)
{
arg = _csi_arg_get(ty, &b);
switch (arg)
{
case -CSI_ARG_ERROR:
return;
/* TODO: -CSI_ARG_NO_VALUE */
case 1:
ty->termstate.appcursor = mode;
break;
case 4:
DBG("set insert mode to %i", mode);
ty->termstate.insert = mode;
break;
case 34:
WRN("TODO: hebrew keyboard mapping: %i", mode);
ty->decoding_error = EINA_TRUE;
break;
case 36:
WRN("TODO: hebrew encoding mode: %i", mode);
ty->decoding_error = EINA_TRUE;
break;
default:
WRN("Unhandled ANSI Reset Mode arg %i", arg);
ty->decoding_error = EINA_TRUE;
}
}
}
}
static int
_csi_truecolor_arg_get(Termpty *ty, Eina_Unicode **ptr)
{
Eina_Unicode *b = *ptr;
int sum = 0;
char separator;
if ((b == NULL) || (*b == '\0'))
{
*ptr = NULL;
return -CSI_ARG_NO_VALUE;
}
/* by construction, shall be the same separator as the following ones */
separator = *(b-1);
if ((separator != ';') && (separator != ':'))
{
*ptr = NULL;
return -CSI_ARG_NO_VALUE;
}
if (*b == separator)
{
b++;
*ptr = b;
return -CSI_ARG_NO_VALUE;
}
if (*b == '\0')
{
*ptr = NULL;
return -CSI_ARG_NO_VALUE;
}
while ((*b >= '0') && (*b <= '9'))
{
if (sum > INT32_MAX/10 )
{
*ptr = NULL;
ERR("Invalid sequence: argument is too large");
ty->decoding_error = EINA_TRUE;
return -CSI_ARG_ERROR;
}
sum *= 10;
sum += *b - '0';
b++;
}
if (*b == separator)
{
b++;
*ptr = b;
}
else if (*b == '\0')
{
*ptr = NULL;
}
else
{
*ptr = b;
}
return sum;
}
static int
_approximate_truecolor_rgb(Termpty *ty, int r0, int g0, int b0)
{
int chosen_color = COL_DEF;
/* TODO: use the function in tests */
#if defined(ENABLE_FUZZING)
(void) ty;
(void) r0;
(void) g0;
(void) b0;
#else
int c;
int distance_min = INT_MAX;
Evas_Object *textgrid;
DBG("approximating r:%d g:%d b:%d", r0, g0, b0);
textgrid = termio_textgrid_get(ty->obj);
for (c = 0; c < 256; c++)
{
int r1 = 0, g1 = 0, b1 = 0, a1 = 0;
int delta_red_sq, delta_green_sq, delta_blue_sq, middle_red;
int distance;
evas_object_textgrid_palette_get(textgrid,
EVAS_TEXTGRID_PALETTE_EXTENDED,
c, &r1, &g1, &b1, &a1);
/* Compute the color distance
* XXX: this is inacurate but should give good enough results.
* See * https://en.wikipedia.org/wiki/Color_difference
*/
middle_red = (r0 + r1) / 2;
delta_red_sq = (r0 - r1) * (r0 - r1);
delta_green_sq = (g0 - g1) * (g0 - g1);
delta_blue_sq = (b0 - b1) * (b0 - b1);
distance = 2 * delta_red_sq
+ 4 * delta_green_sq
+ 3 * delta_blue_sq
+ ((middle_red) * (delta_red_sq - delta_blue_sq) / 256);
if (distance < distance_min)
{
distance_min = distance;
chosen_color = c;
}
}
#endif
return chosen_color;
}
static int
_handle_esc_csi_truecolor_rgb(Termpty *ty, Eina_Unicode **ptr)
{
int r, g, b;
Eina_Unicode *u = *ptr;
char separator;
if ((u == NULL) || (*u == '\0'))
{
return COL_DEF;
}
separator = *(u-1);
r = _csi_truecolor_arg_get(ty, ptr);
g = _csi_truecolor_arg_get(ty, ptr);
b = _csi_truecolor_arg_get(ty, ptr);
if ((r == -CSI_ARG_ERROR) ||
(g == -CSI_ARG_ERROR) ||
(b == -CSI_ARG_ERROR))
return COL_DEF;
if (separator == ':' && *ptr)
{
if (**ptr != ';')
{
/* then the first parameter was a color-space-id (ignored) */
r = g;
g = b;
b = _csi_truecolor_arg_get(ty, ptr);
/* Skip other parameters */
while ((*ptr) && (**ptr != ';'))
{
_csi_truecolor_arg_get(ty, ptr);
}
}
if ((*ptr) && (**ptr == ';'))
{
*ptr = (*ptr) + 1;
}
}
if (r == -CSI_ARG_NO_VALUE)
r = 0;
if (g == -CSI_ARG_NO_VALUE)
g = 0;
if (b == -CSI_ARG_NO_VALUE)
b = 0;
return _approximate_truecolor_rgb(ty, r, g, b);
}
static int
_handle_esc_csi_truecolor_cmy(Termpty *ty, Eina_Unicode **ptr)
{
int r, g, b, c, m, y;
Eina_Unicode *u = *ptr;
char separator;
if ((u == NULL) || (*u == '\0'))
{
return COL_DEF;
}
separator = *(u-1);
/* Considering CMY stored as percents */
c = _csi_truecolor_arg_get(ty, ptr);
m = _csi_truecolor_arg_get(ty, ptr);
y = _csi_truecolor_arg_get(ty, ptr);
if ((c == -CSI_ARG_ERROR) ||
(m == -CSI_ARG_ERROR) ||
(y == -CSI_ARG_ERROR))
return COL_DEF;
if (separator == ':' && *ptr)
{
if (**ptr != ';')
{
/* then the first parameter was a color-space-id (ignored) */
c = m;
m = y;
y = _csi_truecolor_arg_get(ty, ptr);
/* Skip other parameters */
while ((*ptr) && (**ptr != ';'))
{
_csi_truecolor_arg_get(ty, ptr);
}
}
if ((*ptr) && (**ptr == ';'))
{
*ptr = (*ptr) + 1;
}
}
if (c == -CSI_ARG_NO_VALUE)
c = 0;
if (m == -CSI_ARG_NO_VALUE)
m = 0;
if (y == -CSI_ARG_NO_VALUE)
y = 0;
r = 255 - ((c * 255) / 100);
g = 255 - ((m * 255) / 100);
b = 255 - ((y * 255) / 100);
return _approximate_truecolor_rgb(ty, r, g, b);
}
static int
_handle_esc_csi_truecolor_cmyk(Termpty *ty, Eina_Unicode **ptr)
{
int r, g, b, c, m, y, k;
Eina_Unicode *u = *ptr;
char separator;
if ((u == NULL) || (*u == '\0'))
{
return COL_DEF;
}
separator = *(u-1);
/* Considering CMYK stored as percents */
c = _csi_truecolor_arg_get(ty, ptr);
m = _csi_truecolor_arg_get(ty, ptr);
y = _csi_truecolor_arg_get(ty, ptr);
k = _csi_truecolor_arg_get(ty, ptr);
if ((c == -CSI_ARG_ERROR) ||
(m == -CSI_ARG_ERROR) ||
(y == -CSI_ARG_ERROR) ||
(k == -CSI_ARG_ERROR))
return COL_DEF;
if (separator == ':' && *ptr)
{
if (**ptr != ';')
{
/* then the first parameter was a color-space-id (ignored) */
c = m;
m = y;
y = k;
k = _csi_truecolor_arg_get(ty, ptr);
/* Skip other parameters */
while ((*ptr) && (**ptr != ';'))
{
_csi_truecolor_arg_get(ty, ptr);
}
}
if ((*ptr) && (**ptr == ';'))
{
*ptr = (*ptr) + 1;
}
}
if (c == -CSI_ARG_NO_VALUE)
c = 0;
if (m == -CSI_ARG_NO_VALUE)
m = 0;
if (y == -CSI_ARG_NO_VALUE)
y = 0;
if (k == -CSI_ARG_NO_VALUE)
k = 0;
r = (255 * (100 - c) * (100 - k)) / 100 / 100;
g = (255 * (100 - m) * (100 - k)) / 100 / 100;
b = (255 * (100 - y) * (100 - k)) / 100 / 100;
return _approximate_truecolor_rgb(ty, r, g, b);
}
static void
_handle_esc_csi_color_set(Termpty *ty, Eina_Unicode **ptr,
const Eina_Unicode * const end)
{
Eina_Unicode *b = *ptr;
if (b && (*b == '>'))
{ // key resources used by xterm
WRN("TODO: set/reset key resources used by xterm");
ty->decoding_error = EINA_TRUE;
return;
}
DBG("color set");
while (b && b <= end)
{
int arg = _csi_arg_get(ty, &b);
switch (arg)
{
case -CSI_ARG_ERROR:
return;
case -CSI_ARG_NO_VALUE:
EINA_FALLTHROUGH;
case 0: // reset to normal
termpty_reset_att(&(ty->termstate.att));
break;
case 1: // bold/bright
ty->termstate.att.bold = 1;
break;
case 2: // faint
ty->termstate.att.faint = 1;
break;
case 3: // italic
ty->termstate.att.italic = 1;
break;
case 4: // underline
ty->termstate.att.underline = 1;
break;
case 5: // blink
ty->termstate.att.blink = 1;
break;
case 6: // blink rapid
ty->termstate.att.blink2 = 1;
break;
case 7: // reverse
ty->termstate.att.inverse = 1;
break;
case 8: // invisible
ty->termstate.att.invisible = 1;
break;
case 9: // strikethrough
ty->termstate.att.strike = 1;
break;
case 20: // fraktur!
ty->termstate.att.fraktur = 1;
break;
case 21: // no bold/bright
ty->termstate.att.bold = 0;
break;
case 22: // no bold/bright, no faint
ty->termstate.att.bold = 0;
ty->termstate.att.faint = 0;
break;
case 23: // no italic, not fraktur
ty->termstate.att.italic = 0;
ty->termstate.att.fraktur = 0;
break;
case 24: // no underline
ty->termstate.att.underline = 0;
break;
case 25: // no blink
ty->termstate.att.blink = 0;
ty->termstate.att.blink2 = 0;
break;
case 27: // no reverse
ty->termstate.att.inverse = 0;
break;
case 28: // no invisible
ty->termstate.att.invisible = 0;
break;
case 29: // no strikethrough
ty->termstate.att.strike = 0;
break;
case 30: // fg
case 31:
case 32:
case 33:
case 34:
case 35:
case 36:
case 37:
ty->termstate.att.fg256 = 0;
ty->termstate.att.fg = (arg - 30) + COL_BLACK;
ty->termstate.att.fgintense = 0;
break;
case 38: // xterm 256 fg color ???
arg = _csi_arg_get(ty, &b);
switch (arg)
{
case -CSI_ARG_ERROR:
return;
/* TODO: -CSI_ARG_NO_VALUE */
case 1:
ty->termstate.att.fg256 = 0;
ty->termstate.att.fg = COL_INVIS;
break;
case 2:
ty->termstate.att.fg256 = 1;
ty->termstate.att.fg =
_handle_esc_csi_truecolor_rgb(ty, &b);
DBG("truecolor RGB fg: approximation got color %d",
ty->termstate.att.fg);
break;
case 3:
ty->termstate.att.fg256 = 1;
ty->termstate.att.fg =
_handle_esc_csi_truecolor_cmy(ty, &b);
DBG("truecolor CMY fg: approximation got color %d",
ty->termstate.att.fg);
break;
case 4:
ty->termstate.att.fg256 = 1;
ty->termstate.att.fg =
_handle_esc_csi_truecolor_cmyk(ty, &b);
DBG("truecolor CMYK fg: approximation got color %d",
ty->termstate.att.fg);
break;
case 5:
// then get next arg - should be color index 0-255
arg = _csi_arg_get(ty, &b);
if (arg <= -CSI_ARG_ERROR || arg > 255)
{
ERR("Invalid fg color %d", arg);
ty->decoding_error = EINA_TRUE;
}
else
{
if (arg == -CSI_ARG_NO_VALUE)
arg = 0;
ty->termstate.att.fg256 = 1;
ty->termstate.att.fg = arg;
}
break;
default:
ERR("Failed xterm 256 color fg (got %d)", arg);
ty->decoding_error = EINA_TRUE;
}
ty->termstate.att.fgintense = 0;
break;
case 39: // default fg color
ty->termstate.att.fg256 = 0;
ty->termstate.att.fg = COL_DEF;
ty->termstate.att.fgintense = 0;
break;
case 40: // bg
case 41:
case 42:
case 43:
case 44:
case 45:
case 46:
case 47:
ty->termstate.att.bg256 = 0;
ty->termstate.att.bg = (arg - 40) + COL_BLACK;
ty->termstate.att.bgintense = 0;
break;
case 48: // xterm 256 bg color ???
arg = _csi_arg_get(ty, &b);
switch (arg)
{
case -CSI_ARG_ERROR:
return;
/* TODO: -CSI_ARG_NO_VALUE */
case 1:
ty->termstate.att.bg256 = 0;
ty->termstate.att.bg = COL_INVIS;
break;
case 2:
ty->termstate.att.bg256 = 1;
ty->termstate.att.bg =
_handle_esc_csi_truecolor_rgb(ty, &b);
DBG("truecolor RGB bg: approximation got color %d",
ty->termstate.att.bg);
break;
case 3:
ty->termstate.att.bg256 = 1;
ty->termstate.att.bg =
_handle_esc_csi_truecolor_cmy(ty, &b);
DBG("truecolor CMY bg: approximation got color %d",
ty->termstate.att.bg);
break;
case 4:
ty->termstate.att.bg256 = 1;
ty->termstate.att.bg =
_handle_esc_csi_truecolor_cmyk(ty, &b);
DBG("truecolor CMYK bg: approximation got color %d",
ty->termstate.att.bg);
break;
case 5:
// then get next arg - should be color index 0-255
arg = _csi_arg_get(ty, &b);
if (arg <= -CSI_ARG_ERROR || arg > 255)
{
ERR("Invalid bg color %d", arg);
ty->decoding_error = EINA_TRUE;
}
else
{
if (arg == -CSI_ARG_NO_VALUE)
arg = 0;
ty->termstate.att.bg256 = 1;
ty->termstate.att.bg = arg;
}
break;
default:
ERR("Failed xterm 256 color bg (got %d)", arg);
ty->decoding_error = EINA_TRUE;
}
ty->termstate.att.bgintense = 0;
break;
case 49: // default bg color
ty->termstate.att.bg256 = 0;
ty->termstate.att.bg = COL_DEF;
ty->termstate.att.bgintense = 0;
break;
case 51:
WRN("TODO: support SGR 51 - framed attribute");
ty->termstate.att.framed = 1;
break;
case 52:
ty->termstate.att.encircled = 1;
break;
case 53:
WRN("TODO: support SGR 51 - overlined attribute");
ty->termstate.att.overlined = 1;
break;
case 54:
ty->termstate.att.framed = 0;
ty->termstate.att.encircled = 0;
break;
case 55:
ty->termstate.att.overlined = 0;
break;
case 90: // fg
case 91:
case 92:
case 93:
case 94:
case 95:
case 96:
case 97:
ty->termstate.att.fg256 = 0;
ty->termstate.att.fg = (arg - 90) + COL_BLACK;
ty->termstate.att.fgintense = 1;
break;
case 98: // xterm 256 fg color ???
// now check if next arg is 5
/* TODO: shall be like 38 ? */
/* TODO: -CSI_ARG_NO_VALUE */
arg = _csi_arg_get(ty, &b);
if (arg != 5)
{
ERR("Failed xterm 256 color fg esc 5 (got %d)", arg);
ty->decoding_error = EINA_TRUE;
}
else
{
// then get next arg - should be color index 0-255
arg = _csi_arg_get(ty, &b);
if (arg <= -CSI_ARG_ERROR || arg > 255)
{
ERR("Invalid fg color %d", arg);
ty->decoding_error = EINA_TRUE;
}
else
{
if (arg == -CSI_ARG_NO_VALUE)
arg = 0;
ty->termstate.att.fg256 = 1;
ty->termstate.att.fg = arg;
}
}
ty->termstate.att.fgintense = 1;
break;
case 99: // default fg color
ty->termstate.att.fg256 = 0;
ty->termstate.att.fg = COL_DEF;
ty->termstate.att.fgintense = 1;
break;
case 100: // bg
case 101:
case 102:
case 103:
case 104:
case 105:
case 106:
case 107:
ty->termstate.att.bg256 = 0;
ty->termstate.att.bg = (arg - 100) + COL_BLACK;
ty->termstate.att.bgintense = 1;
break;
case 108: // xterm 256 bg color ???
// now check if next arg is 5
/* TODO: -CSI_ARG_NO_VALUE */
arg = _csi_arg_get(ty, &b);
if (arg != 5)
{
ERR("Failed xterm 256 color bg esc 5 (got %d)", arg);
ty->decoding_error = EINA_TRUE;
}
else
{
// then get next arg - should be color index 0-255
arg = _csi_arg_get(ty, &b);
if (arg <= -CSI_ARG_ERROR || arg > 255)
{
ERR("Invalid bg color %d", arg);
ty->decoding_error = EINA_TRUE;
}
else
{
if (arg == -CSI_ARG_NO_VALUE)
arg = 0;
ty->termstate.att.bg256 = 1;
ty->termstate.att.bg = arg;
}
}
ty->termstate.att.bgintense = 1;
break;
case 109: // default bg color
ty->termstate.att.bg256 = 0;
ty->termstate.att.bg = COL_DEF;
ty->termstate.att.bgintense = 1;
break;
default: // not handled???
WRN("Unhandled color cmd [%i]", arg);
ty->decoding_error = EINA_TRUE;
break;
}
}
}
static void
_handle_esc_csi_dsr(Termpty *ty, Eina_Unicode *b)
{
int arg, len;
char bf[32];
Eina_Bool question_mark = EINA_FALSE;
if (*b == '>')
{
WRN("TODO: disable key resources used by xterm");
ty->decoding_error = EINA_TRUE;
return;
}
if (*b == '?')
{
question_mark = EINA_TRUE;
b++;
}
arg = _csi_arg_get(ty, &b);
switch (arg)
{
case -CSI_ARG_ERROR:
return;
case 5:
if (question_mark)
{
WRN("unhandled DSR (dec specific: %s) %d",
(question_mark)? "yes": "no", arg);
ty->decoding_error = EINA_TRUE;
}
else
{
/* DSR-OS (Operating Status)
* Reply Ok */
termpty_write(ty, "\033[0n",
strlen("\033[0n"));
}
break;
case 6:
{
int cx = ty->cursor_state.cx,
cy = ty->cursor_state.cy;
if (ty->termstate.restrict_cursor)
{
if (ty->termstate.top_margin)
cy -= ty->termstate.top_margin;
if (ty->termstate.left_margin)
cx -= ty->termstate.left_margin;
}
if (question_mark)
{
len = snprintf(bf, sizeof(bf), "\033[?%d;%d;1R",
cy + 1,
cx + 1);
}
else
{
len = snprintf(bf, sizeof(bf), "\033[%d;%dR",
cy + 1,
cx + 1);
}
termpty_write(ty, bf, len);
}
break;
case 15:
if (question_mark)
{
/* DSR-PP (Printer Port)
* Reply None */
termpty_write(ty, "\033[?13n",
strlen("\033[?13n"));
}
else
{
WRN("unhandled DSR (dec specific: %s) %d",
(question_mark)? "yes": "no", arg);
ty->decoding_error = EINA_TRUE;
}
break;
case 25:
if (question_mark)
{
/* DSR-UDK (User-Defined Keys)
* Reply Unlocked */
termpty_write(ty, "\033[?20n",
strlen("\033[?20n"));
}
else
{
WRN("unhandled DSR (dec specific: %s) %d",
(question_mark)? "yes": "no", arg);
ty->decoding_error = EINA_TRUE;
}
break;
case 26:
if (question_mark)
{
/* DSR-KBD (Keyboard)
* Reply North American */
termpty_write(ty, "\033[?27;1;0;0n",
strlen("\033[?27;1;0;0n"));
}
else
{
WRN("unhandled DSR (dec specific: %s) %d",
(question_mark)? "yes": "no", arg);
ty->decoding_error = EINA_TRUE;
}
break;
case 62:
if (question_mark)
{
/* DSR-MSR (Macro Space Report)
* Reply 0 */
termpty_write(ty, "\033[0000*{",
strlen("\033[0000*{"));
}
else
{
WRN("unhandled DSR (dec specific: %s) %d",
(question_mark)? "yes": "no", arg);
ty->decoding_error = EINA_TRUE;
}
break;
case 63:
if (question_mark)
{
/* DSR-DECCKSR (Memory Checksum) */
int pid = _csi_arg_get(ty, &b);
len = snprintf(bf, sizeof(bf), "\033P%u!~0000\033\\", pid);
termpty_write(ty, bf, len);
}
else
{
WRN("unhandled DSR (dec specific: %s) %d",
(question_mark)? "yes": "no", arg);
ty->decoding_error = EINA_TRUE;
}
break;
case 75:
if (question_mark)
{
/* DSR-DIR (Data Integrity Report) */
termpty_write(ty, "\033[?70n", strlen("\033[?70n"));
}
else
{
WRN("unhandled DSR (dec specific: %s) %d",
(question_mark)? "yes": "no", arg);
ty->decoding_error = EINA_TRUE;
}
break;
/* TODO: -CSI_ARG_NO_VALUE */
default:
WRN("unhandled DSR (dec specific: %s) %d",
(question_mark)? "yes": "no", arg);
ty->decoding_error = EINA_TRUE;
break;
}
}
static void
_handle_esc_csi_decslrm(Termpty *ty, Eina_Unicode **b)
{
int left = _csi_arg_get(ty, b);
int right = _csi_arg_get(ty, b);
DBG("DECSLRM (%d;%d) Set Left and Right Margins", left, right);
if ((left == -CSI_ARG_ERROR) || (right == -CSI_ARG_ERROR))
goto bad;
TERMPTY_RESTRICT_FIELD(left, 1, ty->w);
if (right < 1)
right = ty->w;
TERMPTY_RESTRICT_FIELD(right, 3, ty->w+1);
if (left >= right)
goto bad;
if (right - left < 2)
goto bad;
if (right == ty->w)
right = 0;
ty->termstate.left_margin = left - 1;
ty->termstate.right_margin = right;
_move_cursor_to_origin(ty);
return;
bad:
ty->termstate.left_margin = 0;
ty->termstate.right_margin = 0;
}
static void
_handle_esc_csi_decstbm(Termpty *ty, Eina_Unicode **b)
{
int top = _csi_arg_get(ty, b);
int bottom = _csi_arg_get(ty, b);
DBG("DECSTBM (%d;%d) Set Top and Bottom Margins", top, bottom);
if ((top == -CSI_ARG_ERROR) || (bottom == -CSI_ARG_ERROR))
goto bad;
TERMPTY_RESTRICT_FIELD(top, 1, ty->h);
TERMPTY_RESTRICT_FIELD(bottom, 1, ty->h+1);
if (top >= bottom) goto bad;
if (bottom == ty->h)
bottom = 0;
ty->termstate.top_margin = top - 1;
ty->termstate.bottom_margin = bottom;
_move_cursor_to_origin(ty);
return;
bad:
ty->termstate.top_margin = 0;
ty->termstate.bottom_margin = 0;
}
static int
_clean_up_rect_coordinates(Termpty *ty,
int *top_ptr,
int *left_ptr,
int *bottom_ptr,
int *right_ptr)
{
int top = *top_ptr;
int left = *left_ptr;
int bottom = *bottom_ptr;
int right = *right_ptr;
TERMPTY_RESTRICT_FIELD(top, 1, ty->h);
if (ty->termstate.restrict_cursor)
{
top += ty->termstate.top_margin;
if (ty->termstate.bottom_margin && top >= ty->termstate.bottom_margin)
top = ty->termstate.bottom_margin;
}
top--;
TERMPTY_RESTRICT_FIELD(left, 1, ty->w);
if (ty->termstate.restrict_cursor)
{
left += ty->termstate.left_margin;
if (ty->termstate.right_margin && left >= ty->termstate.right_margin)
left = ty->termstate.right_margin;
}
left--;
if (right < 1)
right = ty->w;
if (ty->termstate.restrict_cursor)
{
right += ty->termstate.left_margin;
if (ty->termstate.right_margin && right >= ty->termstate.right_margin)
right = ty->termstate.right_margin;
}
if (right > ty->w)
right = ty->w;
if (bottom < 1)
bottom = ty->h;
if (ty->termstate.restrict_cursor)
{
bottom += ty->termstate.top_margin;
if (ty->termstate.bottom_margin && bottom >= ty->termstate.bottom_margin)
bottom = ty->termstate.bottom_margin;
}
bottom--;
if (bottom > ty->h)
bottom = ty->h - 1;
if ((bottom < top) || (right < left))
return -1;
*top_ptr = top;
*left_ptr = left;
*bottom_ptr = bottom;
*right_ptr = right;
return 0;
}
static void
_handle_esc_csi_decfra(Termpty *ty, Eina_Unicode **b)
{
int c = _csi_arg_get(ty, b);
int top = _csi_arg_get(ty, b);
int left = _csi_arg_get(ty, b);
int bottom = _csi_arg_get(ty, b);
int right = _csi_arg_get(ty, b);
int len;
DBG("DECFRA (%d; %d;%d;%d;%d) Fill Rectangular Area",
c, top, left, bottom, right);
if ((c == -CSI_ARG_ERROR) ||
(top == -CSI_ARG_ERROR) ||
(left == -CSI_ARG_ERROR) ||
(bottom == -CSI_ARG_ERROR) ||
(right == -CSI_ARG_ERROR))
return;
/* TODO: -CSI_ARG_NO_VALUE */
if (! ((c >= 32 && c <= 126) || (c >= 160 && c <= 255)))
return;
if (_clean_up_rect_coordinates(ty, &top, &left, &bottom, &right) < 0)
return;
len = right - left;
for (; top <= bottom; top++)
{
Termcell *cells = &(TERMPTY_SCREEN(ty, left, top));
termpty_cells_att_fill_preserve_colors(ty, cells, c, len);
}
}
static void
_handle_esc_csi_decera(Termpty *ty, Eina_Unicode **b)
{
int top = _csi_arg_get(ty ,b);
int left = _csi_arg_get(ty, b);
int bottom = _csi_arg_get(ty, b);
int right = _csi_arg_get(ty, b);
int len;
DBG("DECERA (%d;%d;%d;%d) Erase Rectangular Area",
top, left, bottom, right);
if ((top == -CSI_ARG_ERROR) ||
(left == -CSI_ARG_ERROR) ||
(bottom == -CSI_ARG_ERROR) ||
(right == -CSI_ARG_ERROR))
return;
if (_clean_up_rect_coordinates(ty, &top, &left, &bottom, &right) < 0)
return;
len = right - left;
for (; top <= bottom; top++)
{
Termcell *cells = &(TERMPTY_SCREEN(ty, left, top));
termpty_cells_set_content(ty, cells, ' ', len);
}
}
static void
_handle_esc_csi_cursor_pos_set(Termpty *ty, Eina_Unicode **b,
const Eina_Unicode *cc)
{
int cx = 0, cy = 0;
ty->termstate.wrapnext = 0;
cy = _csi_arg_get(ty, b);
cx = _csi_arg_get(ty, b);
if ((cx == -CSI_ARG_ERROR) || (cy == -CSI_ARG_ERROR))
return;
DBG("cursor pos set (%s) (%d;%d)", (*cc == 'H') ? "CUP" : "HVP",
cx, cy);
cx--;
if (cx < 0)
cx = 0;
if (ty->termstate.restrict_cursor)
{
cx += ty->termstate.left_margin;
if (ty->termstate.right_margin > 0 && cx >= ty->termstate.right_margin)
cx = ty->termstate.right_margin - 1;
}
if (cx >= ty->w)
cx = ty->w -1;
ty->cursor_state.cx = cx;
cy--;
if (cy < 0)
cy = 0;
if (ty->termstate.restrict_cursor)
{
cy += ty->termstate.top_margin;
if (ty->termstate.bottom_margin > 0 && cy >= ty->termstate.bottom_margin)
cy = ty->termstate.bottom_margin - 1;
}
if (cy >= ty->h)
cy = ty->h - 1;
ty->cursor_state.cy = cy;
}
static void
_handle_esc_csi_decscusr(Termpty *ty, Eina_Unicode **b)
{
int arg = _csi_arg_get(ty, b);
Cursor_Shape shape = CURSOR_SHAPE_BLOCK;
DBG("DECSCUSR (%d) Set Cursor Shape", arg);
switch (arg)
{
case -CSI_ARG_ERROR:
return;
case -CSI_ARG_NO_VALUE:
EINA_FALLTHROUGH;
case 0:
EINA_FALLTHROUGH;
case 1:
EINA_FALLTHROUGH;
case 2:
shape = CURSOR_SHAPE_BLOCK;
break;
case 3:
EINA_FALLTHROUGH;
case 4:
shape = CURSOR_SHAPE_UNDERLINE;
break;
case 5:
EINA_FALLTHROUGH;
case 6:
shape = CURSOR_SHAPE_BAR;
break;
default:
WRN("Invalid DECSCUSR %d", arg);
ty->decoding_error = EINA_TRUE;
return;
}
termio_set_cursor_shape(ty->obj, shape);
}
static int
_handle_esc_csi(Termpty *ty, const Eina_Unicode *c, const Eina_Unicode *ce)
{
int arg, i;
const Eina_Unicode *cc, *be;
Eina_Unicode buf[4096], *b;
cc = (Eina_Unicode *)c;
b = buf;
be = buf + sizeof(buf) / sizeof(buf[0]);
while ((cc < ce) && (*cc <= '?') && (b < be))
{
_handle_cursor_control(ty, cc);
*b = *cc;
b++;
cc++;
}
if (b == be)
{
ERR("csi parsing overflowed, skipping the whole buffer (binary data?)");
return cc - c;
}
if (cc == ce) return 0;
*b = 0;
be = b;
b = buf;
DBG(" CSI: '%s' args '%s'", _safechar(*cc), (char *) buf);
switch (*cc)
{
/* sorted by ascii value */
case '@': // insert N blank chars (ICH)
/* TODO: SL */
arg = _csi_arg_get(ty, &b);
if (arg == -CSI_ARG_ERROR)
goto error;
TERMPTY_RESTRICT_FIELD(arg, 1, ty->w * ty->h);
DBG("insert %d blank chars", arg);
{
int pi = ty->termstate.insert;
Eina_Unicode blank[1] = { ' ' };
int cx = ty->cursor_state.cx;
ty->termstate.wrapnext = 0;
ty->termstate.insert = 1;
for (i = 0; i < arg; i++)
termpty_text_append(ty, blank, 1);
ty->termstate.insert = pi;
ty->cursor_state.cx = cx;
TERMPTY_RESTRICT_FIELD(ty->cursor_state.cx, 0, ty->w);
}
break;
case 'A': // cursor up N (CUU)
/* TODO: SR */
arg = _csi_arg_get(ty, &b);
if (arg == -CSI_ARG_ERROR)
goto error;
if (arg < 1)
arg = 1;
DBG("cursor up %d", arg);
ty->termstate.wrapnext = 0;
ty->cursor_state.cy = MAX(0, ty->cursor_state.cy - arg);
TERMPTY_RESTRICT_FIELD(ty->cursor_state.cy, 0, ty->h);
if (ty->termstate.restrict_cursor && (ty->termstate.top_margin > 0)
&& (ty->cursor_state.cy < ty->termstate.top_margin))
{
ty->cursor_state.cy = ty->termstate.top_margin;
}
break;
case 'B': // cursor down N (CUD)
CUD:
arg = _csi_arg_get(ty, &b);
if (arg == -CSI_ARG_ERROR)
goto error;
if (arg < 1)
arg = 1;
DBG("cursor down %d", arg);
ty->termstate.wrapnext = 0;
ty->cursor_state.cy = MIN(ty->h - 1, ty->cursor_state.cy + arg);
TERMPTY_RESTRICT_FIELD(ty->cursor_state.cy, 0, ty->h);
if (ty->termstate.restrict_cursor && (ty->termstate.bottom_margin > 0)
&& (ty->cursor_state.cy >= ty->termstate.bottom_margin))
{
ty->cursor_state.cy = ty->termstate.bottom_margin - 1;
}
break;
case 'C': // cursor right N
CUF:
arg = _csi_arg_get(ty, &b);
if (arg == -CSI_ARG_ERROR)
goto error;
if (arg < 1)
arg = 1;
DBG("cursor right %d", arg);
ty->termstate.wrapnext = 0;
ty->cursor_state.cx += arg;
TERMPTY_RESTRICT_FIELD(ty->cursor_state.cx, 0, ty->w);
if (ty->termstate.restrict_cursor && (ty->termstate.right_margin != 0)
&& (ty->cursor_state.cx >= ty->termstate.right_margin))
{
ty->cursor_state.cx = ty->termstate.right_margin - 1;
}
break;
case 'D': // cursor left N (CUB)
arg = _csi_arg_get(ty, &b);
if (arg == -CSI_ARG_ERROR)
goto error;
if (arg < 1)
arg = 1;
DBG("cursor left %d", arg);
ty->termstate.wrapnext = 0;
ty->cursor_state.cx -= arg;
TERMPTY_RESTRICT_FIELD(ty->cursor_state.cx, 0, ty->w);
if (ty->termstate.restrict_cursor && (ty->termstate.left_margin != 0)
&& (ty->cursor_state.cx < ty->termstate.left_margin))
{
ty->cursor_state.cx = ty->termstate.left_margin;
}
break;
case 'E': // down relative N rows, and to col 0
arg = _csi_arg_get(ty, &b);
if (arg == -CSI_ARG_ERROR)
goto error;
if (arg < 1)
arg = 1;
DBG("down relative %d rows, and to col 0", arg);
ty->termstate.wrapnext = 0;
ty->cursor_state.cy += arg;
TERMPTY_RESTRICT_FIELD(ty->cursor_state.cy, 0, ty->h);
ty->cursor_state.cx = 0;
break;
case 'F': // up relative N rows, and to col 0
arg = _csi_arg_get(ty, &b);
if (arg == -CSI_ARG_ERROR)
goto error;
TERMPTY_RESTRICT_FIELD(arg, 1, ty->h);
DBG("up relative %d rows, and to col 0", arg);
ty->termstate.wrapnext = 0;
ty->cursor_state.cy -= arg;
TERMPTY_RESTRICT_FIELD(ty->cursor_state.cy, 0, ty->h);
ty->cursor_state.cx = 0;
break;
case 'G': // to column N
arg = _csi_arg_get(ty, &b);
if (arg == -CSI_ARG_ERROR)
goto error;
if (arg < 1)
arg = 1;
DBG("to column %d", arg);
ty->termstate.wrapnext = 0;
ty->cursor_state.cx = arg - 1;
TERMPTY_RESTRICT_FIELD(ty->cursor_state.cx, 0, ty->w);
break;
case 'H': // cursor pos set (CUP)
goto HVP;
case 'I':
arg = _csi_arg_get(ty, &b);
if (arg == -CSI_ARG_ERROR)
goto error;
TERMPTY_RESTRICT_FIELD(arg, 1, ty->w);
DBG("Cursor Forward Tabulation (CHT): %d", arg);
_tab_forward(ty, arg);
break;
case 'J':
if (*b == '?')
{
b++;
arg = _csi_arg_get(ty, &b);
if (arg == -CSI_ARG_ERROR)
goto error;
WRN("Unsupported selected erase in display %d", arg);
ty->decoding_error = EINA_TRUE;
break;
}
else
{
arg = _csi_arg_get(ty, &b);
if (arg == -CSI_ARG_ERROR)
goto error;
}
if (arg < 1)
arg = 0;
/* 3J erases the backlog,
* 2J erases the screen,
* 1J erase from screen start to cursor,
* 0J erase form cursor to end of screen
*/
DBG("ED/DECSED %d: erase in display", arg);
switch (arg)
{
case TERMPTY_CLR_END /* 0 */:
case TERMPTY_CLR_BEGIN /* 1 */:
case TERMPTY_CLR_ALL /* 2 */:
termpty_clear_screen(ty, arg);
break;
case 3:
termpty_clear_backlog(ty);
break;
default:
ERR("invalid EL/DECSEL argument %d", arg);
ty->decoding_error = EINA_TRUE;
}
break;
case 'K': // 0K erase to end of line, 1K erase from screen start to cursor, 2K erase all of line
if (*b == '?')
{
b++;
arg = _csi_arg_get(ty, &b);
if (arg == -CSI_ARG_ERROR)
goto error;
WRN("Unsupported selected erase in line %d", arg);
ty->decoding_error = EINA_TRUE;
break;
}
arg = _csi_arg_get(ty, &b);
if (arg == -CSI_ARG_ERROR)
goto error;
if (arg < 1)
arg = 0;
DBG("EL/DECSEL %d: erase in line", arg);
switch (arg)
{
case TERMPTY_CLR_END:
case TERMPTY_CLR_BEGIN:
case TERMPTY_CLR_ALL:
termpty_clear_line(ty, arg, ty->w);
break;
default:
ERR("invalid EL/DECSEL argument %d", arg);
ty->decoding_error = EINA_TRUE;
}
break;
case 'L': // insert N lines - cy
EINA_FALLTHROUGH;
case 'M': // delete N lines - cy
arg = _csi_arg_get(ty, &b);
if (arg == -CSI_ARG_ERROR)
goto error;
TERMPTY_RESTRICT_FIELD(arg, 1, ty->h);
DBG("%s %d lines", (*cc == 'M') ? "delete" : "insert", arg);
if ((ty->cursor_state.cy >= ty->termstate.top_margin) &&
((ty->termstate.bottom_margin == 0) ||
(ty->cursor_state.cy < ty->termstate.bottom_margin)))
{
int sy1, sy2;
sy1 = ty->termstate.top_margin;
sy2 = ty->termstate.bottom_margin;
if (ty->termstate.bottom_margin == 0)
{
ty->termstate.top_margin = ty->cursor_state.cy;
ty->termstate.bottom_margin = ty->h;
}
else
{
ty->termstate.top_margin = ty->cursor_state.cy;
if (ty->termstate.bottom_margin <= ty->termstate.top_margin)
ty->termstate.bottom_margin = ty->termstate.top_margin + 1;
}
for (i = 0; i < arg; i++)
{
if (*cc == 'M')
termpty_text_scroll(ty, EINA_TRUE);
else
termpty_text_scroll_rev(ty, EINA_TRUE);
}
ty->termstate.top_margin = sy1;
ty->termstate.bottom_margin = sy2;
}
break;
case 'P': // erase and scrollback N chars
arg = _csi_arg_get(ty, &b);
if (arg == -CSI_ARG_ERROR)
goto error;
TERMPTY_RESTRICT_FIELD(arg, 1, ty->w);
DBG("erase and scrollback %d chars", arg);
{
Termcell *cells;
int x, lim;
cells = &(TERMPTY_SCREEN(ty, 0, ty->cursor_state.cy));
lim = ty->w - arg;
for (x = ty->cursor_state.cx; x < (ty->w); x++)
{
if (x < lim)
TERMPTY_CELL_COPY(ty, &(cells[x + arg]), &(cells[x]), 1);
else
{
cells[x].codepoint = ' ';
cells[x].att.underline = 0;
cells[x].att.blink = 0;
cells[x].att.blink2 = 0;
cells[x].att.inverse = 0;
cells[x].att.strike = 0;
cells[x].att.dblwidth = 0;
}
}
}
break;
case 'S': // scroll up N lines
arg = _csi_arg_get(ty, &b);
if (arg == -CSI_ARG_ERROR)
goto error;
TERMPTY_RESTRICT_FIELD(arg, 1, ty->h);
DBG("scroll up %d lines", arg);
for (i = 0; i < arg; i++)
termpty_text_scroll(ty, EINA_TRUE);
break;
case 'T': // scroll down N lines
arg = _csi_arg_get(ty, &b);
if (arg == -CSI_ARG_ERROR)
goto error;
TERMPTY_RESTRICT_FIELD(arg, 1, ty->h);
DBG("scroll down %d lines", arg);
for (i = 0; i < arg; i++)
termpty_text_scroll_rev(ty, EINA_TRUE);
break;
case 'X': // erase N chars
arg = _csi_arg_get(ty, &b);
if (arg == -CSI_ARG_ERROR)
goto error;
TERMPTY_RESTRICT_FIELD(arg, 1, ty->w);
DBG("ECH: erase %d chars", arg);
termpty_clear_line(ty, TERMPTY_CLR_END, arg);
break;
case 'Z':
{
int cx = ty->cursor_state.cx;
arg = _csi_arg_get(ty, &b);
if (arg == -CSI_ARG_ERROR)
goto error;
DBG("Cursor Backward Tabulation (CBT): %d", arg);
TERMPTY_RESTRICT_FIELD(arg, 1, ty->w);
for (; arg > 0; arg--)
{
do
{
cx--;
}
while ((cx >= 0) && (!TAB_TEST(ty, cx)));
}
ty->cursor_state.cx = cx;
TERMPTY_RESTRICT_FIELD(ty->cursor_state.cx, 0, ty->w);
}
break;
case '`': // HPA
arg = _csi_arg_get(ty, &b);
if (arg == -CSI_ARG_ERROR)
goto error;
DBG("Horizontal Position Absolute (HPA): %d", arg);
arg--;
if (arg < 0)
arg = 0;
ty->termstate.wrapnext = 0;
ty->cursor_state.cx = arg;
TERMPTY_RESTRICT_FIELD(ty->cursor_state.cx, 0, ty->w);
if (ty->termstate.restrict_cursor)
{
if ((ty->termstate.right_margin != 0)
&& (ty->cursor_state.cx >= ty->termstate.right_margin))
{
ty->cursor_state.cx = ty->termstate.right_margin - 1;
}
if ((ty->termstate.left_margin != 0)
&& (ty->cursor_state.cx < ty->termstate.left_margin))
{
ty->cursor_state.cx = ty->termstate.left_margin;
}
}
break;
case 'a': // cursor right N (HPR)
goto CUF;
case 'b': // repeat last char
if (ty->last_char)
{
arg = _csi_arg_get(ty, &b);
if (arg == -CSI_ARG_ERROR)
goto error;
TERMPTY_RESTRICT_FIELD(arg, 1, ty->w * ty->h);
DBG("REP: repeat %d times last char %x", arg, ty->last_char);
for (i = 0; i < arg; i++)
termpty_text_append(ty, &ty->last_char, 1);
}
break;
case 'c': // query device attributes
DBG("query device attributes");
{
char bf[32];
if (b && *b == '>')
{
// Primary device attributes
// 0 → VT100
// 1 → VT220
// 2 → VT240
// 18 → VT330
// 19 → VT340
// 24 → VT320
// 41 → VT420
// 61 → VT510
// 64 → VT520
// 65 → VT525
snprintf(bf, sizeof(bf), "\033[>41;337;%ic", 0);
}
else
{
// Secondary device attributes
snprintf(bf, sizeof(bf), "\033[?64;1;2;6;9;15;18;21;22c");
}
termpty_write(ty, bf, strlen(bf));
}
break;
case 'd': // to row N
arg = _csi_arg_get(ty, &b);
if (arg == -CSI_ARG_ERROR)
goto error;
if (arg < 1)
arg = 1;
DBG("to row %d", arg);
ty->termstate.wrapnext = 0;
ty->cursor_state.cy = arg - 1;
TERMPTY_RESTRICT_FIELD(ty->cursor_state.cy, 0, ty->h);
break;
case 'e': // cursor down N (VPR)
goto CUD;
case 'f': // cursor pos set (HVP)
HVP:
_handle_esc_csi_cursor_pos_set(ty, &b, cc);
break;
case 'g': // clear tabulation
arg = _csi_arg_get(ty, &b);
if (arg == -CSI_ARG_ERROR)
goto error;
if (arg < 0)
arg = 0;
if (arg == 0)
{
int cx = ty->cursor_state.cx;
TAB_UNSET(ty, cx);
}
else if (arg == 3)
{
termpty_clear_tabs_on_screen(ty);
}
else
{
ERR("Tabulation Clear (TBC) with invalid argument: %d", arg);
ty->decoding_error = EINA_TRUE;
}
break;
case 'h':
_handle_esc_csi_reset_mode(ty, *cc, b, be);
break;
case 'i':
WRN("TODO: Media Copy (?:%s)", (*b == '?') ? "yes": "no");
ty->decoding_error = EINA_TRUE;
break;
case 'l':
_handle_esc_csi_reset_mode(ty, *cc, b, be);
break;
case 'm': // color set
_handle_esc_csi_color_set(ty, &b, be);
break;
case 'n':
_handle_esc_csi_dsr(ty, b);
break;
case 'p': // define key assignments based on keycode
if (b && *b == '!')
{
DBG("soft reset (DECSTR)");
termpty_soft_reset_state(ty);
}
else
{
goto unhandled;
}
break;
case 'q':
if (*(cc-1) == ' ')
_handle_esc_csi_decscusr(ty, &b);
else if (*(cc-1) == '"')
{
WRN("TODO: select character protection attribute (DECSCA)");
ty->decoding_error = EINA_TRUE;
}
else
{
WRN("TODO: Load LEDs (DECLL)");
ty->decoding_error = EINA_TRUE;
}
break;
case 'r':
_handle_esc_csi_decstbm(ty, &b);
break;
case 's':
if (ty->termstate.lr_margins)
{
_handle_esc_csi_decslrm(ty, &b);
}
else
{
DBG("SCOSC: Save Current Cursor Position");
termpty_cursor_copy(ty, EINA_TRUE);
}
break;
case 't': // window manipulation
arg = _csi_arg_get(ty, &b);
if (arg == -CSI_ARG_ERROR)
goto error;
WRN("TODO: window operation %d not supported", arg);
ty->decoding_error = EINA_TRUE;
break;
case 'u': // restore cursor pos
termpty_cursor_copy(ty, EINA_FALSE);
break;
case 'x':
if (*(cc-1) == '$')
_handle_esc_csi_decfra(ty, &b);
break;
case 'z':
if (*(cc-1) == '$')
_handle_esc_csi_decera(ty, &b);
break;
default:
goto unhandled;
}
cc++;
return cc - c;
unhandled:
error:
#if !defined(ENABLE_FUZZING) && !defined(ENABLE_TESTS)
if (eina_log_domain_level_check(_termpty_log_dom, EINA_LOG_LEVEL_WARN))
{
Eina_Strbuf *bf = eina_strbuf_new();
for (i = 0; c + i <= cc && i < 100; i++)
{
if ((c[i] < ' ') || (c[i] >= 0x7f))
eina_strbuf_append_printf(bf, "\033[35m%08x\033[0m",
(unsigned int) c[i]);
else
eina_strbuf_append_char(bf, c[i]);
}
WRN("unhandled CSI '%s': %s", _safechar(*cc), eina_strbuf_string_get(bf));
eina_strbuf_free(bf);
}
#endif
ty->decoding_error = EINA_TRUE;
cc++;
return cc - c;
}
static int
_osc_arg_get(Eina_Unicode **ptr)
{
Eina_Unicode *b = *ptr;
int sum = 0;
while (*b >= '0' && *b <= '9')
{
sum *= 10;
sum += *b - '0';
b++;
}
if (*b != ';')
sum = -1;
else
b++;
*ptr = b;
return sum;
}
static int
_eina_unicode_to_hex(Eina_Unicode u)
{
if (u >= '0' && u <= '9')
return u - '0';
if (u >= 'a' && u <= 'f')
return 10 + u - 'a';
if (u >= 'A' && u <= 'F')
return 10 + u - 'A';
return -1;
}
static int
_xterm_parse_color(Termpty *ty, Eina_Unicode **ptr,
unsigned char *r, unsigned char *g, unsigned char *b,
int len)
{
Eina_Unicode *p = *ptr;
int i;
if (*p != '#')
{
WRN("unsupported xterm color");
ty->decoding_error = EINA_TRUE;
return -1;
}
p++;
len--;
if (len == 7)
{
i = _eina_unicode_to_hex(p[0]);
if (i < 0) goto err;
*r = i;
i = _eina_unicode_to_hex(p[1]);
if (i < 0) goto err;
*r = *r * 16 + i;
i = _eina_unicode_to_hex(p[2]);
if (i < 0) goto err;
*g = i;
i = _eina_unicode_to_hex(p[3]);
if (i < 0) goto err;
*g = *g * 16 + i;
i = _eina_unicode_to_hex(p[4]);
if (i < 0) goto err;
*b = i;
i = _eina_unicode_to_hex(p[5]);
if (i < 0) goto err;
*b = *b * 16 + i;
}
else if (len == 4)
{
i = _eina_unicode_to_hex(p[0]);
if (i < 0) goto err;
*r = i;
i = _eina_unicode_to_hex(p[1]);
if (i < 0) goto err;
*g = i;
i = _eina_unicode_to_hex(p[2]);
if (i < 0) goto err;
*b = i;
}
else
{
goto err;
}
return 0;
err:
WRN("invalid xterm color");
ty->decoding_error = EINA_TRUE;
return -1;
}
static void
_handle_hyperlink(Termpty *ty,
char *s,
int len)
{
const char *url = NULL;
const char *key = NULL;
Term_Link *hl = NULL;
if (!s || len <= 0)
{
ERR("invalid hyperlink escape code (len:%d s:%p)",
len, s);
ty->decoding_error = EINA_TRUE;
return;
}
if (len == 1 && *s == ';')
{
/* Closing escape code */
if (ty->termstate.att.link_id)
{
ty->termstate.att.link_id = 0;
}
else
{
ERR("invalid hyperlink escape code: no hyperlink to close"
" (len:%d s:%.*s)", len, len, s);
ty->decoding_error = EINA_TRUE;
}
goto end;
}
if (*s != ';')
{
/* Parse parameters */
char *end;
/* /!\ we expect ';' and ':' to be escaped in params */
end = memchr(s+1, ';', len);
if (!end)
{
ERR("invalid hyperlink escape code: missing ';'"
" (len:%d s:%.*s)", len, len, s);
ty->decoding_error = EINA_TRUE;
goto end;
}
*end = '\0';
do
{
char *end_param;
end_param = strchrnul(s, ':');
if (len > 3 && strncmp(s, "id=", 3) == 0)
{
eina_stringshare_del(key);
s += 3;
len -= 3;
key = eina_stringshare_add_length(s, end_param - s);
}
len -= end_param - s;
s = end_param;
if (*end_param)
{
s++;
len--;
}
}
while (s < end);
*end = ';';
}
s++;
len--;
url = eina_stringshare_add_length(s, len);
if (!url)
goto end;
hl = term_link_new(ty);
if (!hl)
goto end;
hl->key = key;
hl->url = url;
key = NULL;
url = NULL;
ty->termstate.att.link_id = hl - ty->hl.links;
hl = NULL;
end:
term_link_free(ty, hl);
eina_stringshare_del(url);
eina_stringshare_del(key);
}
static void