+void
+vt102_cursor_normalize (VT102 * v)
+{
+ CRT_Pos *top, *bottom;
+
+ if (v->private_modes[VT102_PRIVATE_MODE_ORIGIN_MODE]) {
+ vt102_clip_cursor (v, v->top_margin, v->bottom_margin);
+ } else {
+ vt102_clip_cursor (v, v->screen_start, v->screen_end);
+ }
+}
+
+
+void
+vt102_cursor_carriage_return (VT102 * v)
+{
+ v->pos.x = v->top_margin.x;
+ v->pending_wrap = 0;
+}
+
+void
+vt102_cursor_advance_line (Context * c)
+{
+ VT102 *v = c->v;
+ int couldscroll = in_margins (v, v->pos);
+
+ /* have wraped off end of last line in scrolling region */
+ /* not necessary, but shuts compiler up */
+ if (((v->pos.y == v->bottom_margin.y) || (v->pos.y == v->screen_end.y))
+ && (couldscroll)) {
+ vt102_log_line (c, v->pos.y);
+
+ vt102_history (c, v->top_margin, v->bottom_margin);
+
+ crt_scroll_up (&v->crt, v->top_margin, v->bottom_margin, 1, v->color);
+ return;
+ }
+
+ if (v->pos.y != v->screen_end.y)
+ v->pos.y++;
+ v->pending_wrap = 0;
+}
+
+
+void
+vt102_cursor_retreat_line (Context * c)
+{
+ VT102 *v = c->v;
+ int couldscroll = in_margins (v, v->pos);
+
+ /* have wraped off end of first line in scrolling region */
+ /* (|| not necessary, but shuts compiler up */
+ if (((v->pos.y == v->top_margin.y) || (v->pos.y == v->screen_start.y)) &&
+ (couldscroll)) {
+ vt102_log_line (c, v->pos.y);
+
+ crt_scroll_down (&v->crt, v->top_margin, v->bottom_margin, 1, v->color);
+ return;
+ }
+
+ if (v->pos.y != v->screen_start.y)
+ v->pos.y--;
+ v->pending_wrap = 0;
+}
+
+
+void
+vt102_do_pending_wrap (Context * c)
+{
+ VT102 *v = c->v;
+ int couldscroll = in_margins (v, v->pos);
+ int autowrap = v->private_modes[VT102_PRIVATE_MODE_AUTO_WRAP];
+
+ if (!v->pending_wrap)
+ return;
+
+ /* End of line but no autowrap, nothing to do */
+ if (!autowrap)
+ return;
+
+ /* End of screen and not allowed to scroll, nothing to do */
+ if ((v->pos.y == v->screen_end.y) && (!couldscroll))
+ return;
+
+ if (couldscroll) {
+ v->pos.x = v->top_margin.x;
+ } else {
+ v->pos.x = 0;
+ }
+
+ vt102_cursor_advance_line (c);
+}
+
+void
+vt102_cursor_advance (Context * c)
+{
+ VT102 *v = c->v;
+
+ if (v->pos.x < v->bottom_margin.x) {
+ /* Normal advance */
+ v->pos.x++;
+ v->pending_wrap = 0;
+ return;
+ }
+ v->pending_wrap++;
+ if (!c->v->xn_glitch)
+ vt102_do_pending_wrap (c);
+}
+
+
+
+void
+vt102_cursor_retreat (VT102 * v)
+{
+ if (v->pos.x != v->top_margin.x) {
+ v->pos.x--;
+ }
+
+ v->pending_wrap = 0;
+}
+
+void
+vt102_reset_tabs (VT102 * v)
+{
+ int i;
+
+ memset (v->tabs, 0, sizeof (v->tabs));
+
+ for (i = 0; i < VT102_MAX_COLS; i += 8) {
+ v->tabs[i]++;
+ }
+}
+void
+vt102_cursor_advance_tab (VT102 * v)
+{
+ if (v->pos.x == v->bottom_margin.x)
+ return;
+ while (v->pos.x < v->bottom_margin.x) {
+ v->pos.x++;
+ if (v->tabs[v->pos.x])
+ break;
+ }
+ v->pending_wrap = 0;
+}
+
+void
+vt102_cursor_retreat_tab (VT102 * v)
+{
+ if (v->pos.x == v->top_margin.x)
+ return;
+ while (v->pos.x > v->top_margin.x) {
+ v->pos.x--;
+ if (v->tabs[v->pos.x])
+ break;
+ }
+ v->pending_wrap = 0;
+}
+
+vt102_cursor_home (VT102 * v)
+{
+ v->pos = v->top_margin;
+ vt102_cursor_normalize (v);
+ v->pending_wrap = 0;
+
+}
+
+vt102_cursor_absolute (VT102 * v, int x, int y)
+{
+ if (v->private_modes[VT102_PRIVATE_MODE_ORIGIN_MODE]) {
+ v->pos.x = x + v->top_margin.x;
+ v->pos.y = y + v->top_margin.y;
+ } else {
+ v->pos.x = x;
+ v->pos.y = y;
+ }
+ vt102_cursor_normalize (v);
+ v->pending_wrap = 0;
+}
+
+vt102_cursor_relative (VT102 * v, int x, int y)
+{
+ v->pos.x += x;
+ v->pos.y += y;
+ vt102_cursor_normalize (v);
+ v->pending_wrap = 0;
+}
+
+
+
+void
+vt102_delete_from_line (VT102 * v, CRT_Pos p)
+{
+ int n = v->bottom_margin.x - p.x;
+
+ if (n < 0)
+ return;
+
+ if (n) {
+
+ memmove (&v->crt.screen[CRT_ADDR_POS (&p)],
+ &v->crt.screen[CRT_ADDR_POS (&p) + 1], sizeof (CRT_CA) * n);
+ }
+
+ v->crt.screen[CRT_ADDR (p.y, v->bottom_margin.x)].chr = ' ';
+ /* But not attr due to vt102 bug */
+}
+
+void
+vt102_insert_into_line (VT102 * v, CRT_Pos p)
+{
+ int n = v->bottom_margin.x - p.x;
+
+ if (n < 0)
+ return;
+
+ if (n) {
+
+ memmove (&v->crt.screen[CRT_ADDR_POS (&p) + 1],
+ &v->crt.screen[CRT_ADDR_POS (&p)], sizeof (CRT_CA) * n);
+ }
+
+ v->crt.screen[CRT_ADDR_POS (&p)].chr = ' ';
+ v->crt.screen[CRT_ADDR_POS (&p)].attr = CRT_ATTR_NORMAL;
+ v->crt.screen[CRT_ADDR_POS (&p)].color = CRT_COLOR_NORMAL;
+}
+
+
+
+void
+vt102_change_mode (Context * c, int private, char *ns, int set)
+{
+ VT102 *v = c->v;
+ int m;
+
+
+ if (*ns) {
+ m = atoi (ns);
+ } else {
+ m = 1;
+ }
+
+ if (m < 0)
+ return;
+ if (m >= VT102_NMODES)
+ return;
+
+ if (private) {
+ v->private_modes[m] = set;
+ switch (m) {
+ case VT102_PRIVATE_MODE_CURSOR_MODE:
+ if (v->application_keypad_mode)
+ v->private_modes[m] = 0;
+ break;
+ case VT102_PRIVATE_MODE_ORIGIN_MODE:
+ vt102_cursor_home (v);
+ break;
+ case VT102_PRIVATE_MODE_132COLS:
+ v->current_size.x =
+ v->
+ private_modes[VT102_PRIVATE_MODE_132COLS] ? VT102_COLS_132 :
+ VT102_COLS_80;
+
+ vt102_do_resize (c);
+ break;
+ }
+
+ } else
+ v->modes[m] = set;
+}
+
+void
+vt102_parse_mode_string (Context * c, char *buf, int len)
+{
+ VT102 *v = c->v;
+ int private = 0;
+ char last = buf[len - 1];
+ char num[4];
+ int o;
+
+ memset (num, 0, sizeof (num));
+ o = sizeof (num) - 1;
+
+ len--;
+
+ if (*buf == '?') {
+ private++;
+ buf++;
+ len--;
+ }
+
+ if (len < 0)
+ return;
+
+ while (len--) {
+ if (*buf == ';') {
+ vt102_change_mode (c, private, &num[o], last == 'h');
+ memset (num, 0, sizeof (num));
+ o = sizeof (num) - 1;
+ buf++;
+ continue;
+ }
+
+ num[0] = num[1];
+ num[1] = num[2];
+ num[2] = *buf;
+
+ if (o)
+ o--;
+
+ buf++;
+ }
+
+ vt102_change_mode (c, private, &num[o], last == 'h');
+
+}
+
+
+void
+vt102_change_attr (VT102 * v, char *na)
+{
+ int a;
+
+
+ if (*na) {
+ a = atoi (na);
+ } else {
+ a = 0;
+ }
+
+ switch (a) {
+ case 0:
+ v->attr = CRT_ATTR_NORMAL;
+ v->color = CRT_COLOR_NORMAL;
+ break;
+ case 1:
+ v->attr |= CRT_ATTR_BOLD;
+ break;
+ case 21:
+ case 22:
+ v->attr &= ~CRT_ATTR_BOLD;
+ break;
+ case 4:
+ v->attr |= CRT_ATTR_UNDERLINE;
+ break;
+ case 24:
+ v->attr &= ~CRT_ATTR_UNDERLINE;
+ break;
+ case 5:
+ v->attr |= CRT_ATTR_BLINK;
+ break;
+ case 25:
+ v->attr &= ~CRT_ATTR_BLINK;
+ break;
+ case 7:
+ v->attr |= CRT_ATTR_REVERSE;
+ break;
+ case 27:
+ v->attr &= ~CRT_ATTR_REVERSE;
+ break;
+ case 30:
+ case 31:
+ case 32:
+ case 33:
+ case 34:
+ case 35:
+ case 36:
+ case 37:
+ v->color &= ~CRT_COLOR_FG_MASK;
+ v->color |= ((a - 30) << CRT_COLOR_FG_SHIFT) & CRT_COLOR_FG_MASK;
+ break;
+ case 90:
+ case 91:
+ case 92:
+ case 93:
+ case 94:
+ case 95:
+ case 96:
+ case 97:
+ v->color &= ~CRT_COLOR_FG_MASK;
+ v->color |=
+ (((a -
+ 90) | CRT_COLOR_INTENSITY) << CRT_COLOR_FG_SHIFT) &
+ CRT_COLOR_FG_MASK;
+ break;
+ case 39:
+ case 99:
+ v->color &= ~CRT_COLOR_FG_MASK;
+ v->color |=
+ (CRT_FGCOLOR_NORMAL << CRT_COLOR_FG_SHIFT) & CRT_COLOR_FG_MASK;
+ break;
+ case 40:
+ case 41:
+ case 42:
+ case 43:
+ case 44:
+ case 45:
+ case 46:
+ case 47:
+ v->color &= ~CRT_COLOR_BG_MASK;
+ v->color |= ((a - 40) << CRT_COLOR_BG_SHIFT) & CRT_COLOR_BG_MASK;
+ break;
+ case 100:
+ case 101:
+ case 102:
+ case 103:
+ case 104:
+ case 105:
+ case 106:
+ case 107:
+ v->color &= ~CRT_COLOR_BG_MASK;
+ v->color |=
+ (((a -
+ 100) | CRT_COLOR_INTENSITY) << CRT_COLOR_BG_SHIFT) &
+ CRT_COLOR_BG_MASK;
+ break;
+ case 49:
+ case 109:
+ v->color &= ~CRT_COLOR_BG_MASK;
+ v->color |=
+ (CRT_BGCOLOR_NORMAL << CRT_COLOR_BG_SHIFT) & CRT_COLOR_BG_MASK;
+ break;
+ }
+
+}
+
+
+void
+vt102_parse_attr_string (VT102 * v, char *buf, int len)
+{
+ int private = 0;
+ char last = buf[len - 1];
+ char num[4];
+ int o;
+
+ memset (num, 0, sizeof (num));
+ o = sizeof (num) - 1;
+
+ len--;
+
+ if (len < 0)
+ return;
+
+ while (len--) {
+ if (*buf == ';') {
+ vt102_change_attr (v, &num[o]);
+ memset (num, 0, sizeof (num));
+ o = sizeof (num) - 1;
+ buf++;
+ continue;
+ }
+
+ num[0] = num[1];
+ num[1] = num[2];
+ num[2] = *buf;
+
+ if (o)
+ o--;
+
+ buf++;
+ }
+ vt102_change_attr (v, &num[o]);
+}
+
+void
+vt102_save_state (VT102 * v)
+{
+ v->saved.pos = v->pos;
+ v->saved.attr = v->attr;
+ v->saved.color = v->color;
+ v->saved.origin_mode = v->private_modes[VT102_PRIVATE_MODE_ORIGIN_MODE];
+}
+
+void
+vt102_restore_state (VT102 * v)
+{
+ v->pos = v->saved.pos;
+ v->attr = v->saved.attr;
+ v->color = v->saved.color;
+ v->private_modes[VT102_PRIVATE_MODE_ORIGIN_MODE] = v->saved.origin_mode;
+ vt102_cursor_normalize (v);
+ v->pending_wrap = 0;
+}
+
+void
+vt102_regular_char (Context * c, VT102 * v, uint32_t ch)
+{
+
+
+ vt102_do_pending_wrap (c);
+
+
+ if (v->modes[VT102_MODE_INSERT])
+ vt102_insert_into_line (v, v->pos);
+
+ v->last_reg_char = ch;
+
+
+ if (ch < VT102_CHARSET_SIZE) {
+ int cs;
+ if ((cs = vt102_charset_c0[ch])) {
+ ch = cs;
+ } else if ((cs = charset_from_csid[v->g[v->cs]][ch])) {
+ ch = cs;
+ }
+ }
+ v->crt.screen[CRT_ADDR_POS (&v->pos)].chr = ch;
+ v->crt.screen[CRT_ADDR_POS (&v->pos)].attr = v->attr;
+ v->crt.screen[CRT_ADDR_POS (&v->pos)].color = v->color;
+ vt102_cursor_advance (c);
+
+}
+
+vt102_send_id (Context * c, char *buf)
+{
+
+ if (c->t) {
+ int l = strlen (buf);
+ c->t->xmit (c->t, buf, l);
+ }
+}
+
+void
+vt102_scs (Context * c, int g, int s)
+{
+ VT102 *v = c->v;
+ int cs = VT102_CSID_US;
+
+
+ switch (s) {
+ case 'A':
+ cs = VT102_CSID_UK;
+ break;
+ case '1':
+ case '2':
+ case 'B':
+ cs = VT102_CSID_US;
+ break;
+ case '0':
+ cs = VT102_CSID_GL;
+ break;
+ }
+
+ switch (g) {
+ case '(':
+ v->g[0] = cs;
+ break;
+ case ')':
+ v->g[1] = cs;
+ break;
+ }
+
+}
+
+static int
+vt102_parse_csi (Context * c, char *buf, int len)
+{
+ char last;
+ char *ptr;
+ char *arg = buf + 1;
+ int narg;
+ int err = 0;
+
+ VT102 *v = c->v;
+
+ buf[len] = 0;
+
+ last = buf[len - 1];
+
+ if (len > 2) {
+ narg = atoi (arg);
+ } else {
+ narg = 1;
+ }
+
+ switch (buf[0]) {
+ case '[': /* CSI */
+ switch (last) {
+ case '@': /* ICH */
+ while (narg--)
+ vt102_insert_into_line (v, v->pos);
+ break;
+ case 'A': /* CUU */
+ vt102_cursor_relative (v, 0, -narg);
+ break;
+ case 'e': /* VPR */
+ case 'B': /* CUD */
+ vt102_cursor_relative (v, 0, narg);
+ break;
+ case 'a': /* HPR */
+ case 'C': /* CUF */
+ vt102_cursor_relative (v, narg, 0);
+ break;
+ case 'D': /* CUB */
+ vt102_cursor_relative (v, -narg, 0);
+ break;
+ case 'E': /* CNL */
+ vt102_cursor_relative (v, 0, narg);
+ vt102_cursor_carriage_return (v);
+ break;
+ case 'F': /* CPL */
+ vt102_cursor_relative (v, 0, -narg);
+ vt102_cursor_carriage_return (v);
+ break;
+ case 'G': /* CHG */
+ vt102_cursor_absolute (v, narg - 1, v->pos.y);
+ break;
+ case 'H': /* CUP */
+ case 'f': /* HVP */
+ {
+ int x, y;
+
+ y = narg - 1;
+
+ ptr = index (arg, ';');
+ if (ptr)
+ x = atoi (ptr + 1) - 1;
+ else
+ x = 0;
+
+ vt102_cursor_absolute (v, x, y);
+ }
+ break;
+ case 'I': /* CHT */
+ while (narg--)
+ vt102_cursor_advance_tab (c->v);
+ break;
+ case 'J': /* ED */
+ /* Different default */
+ if (len == 2)
+ narg = 0;
+ switch (narg) {
+ case 0:
+ crt_erase (&v->crt, v->pos, v->screen_end, 1, v->color);
+ break;
+ case 1:
+ crt_erase (&v->crt, v->screen_start, v->pos, 1, v->color);
+ break;
+ case 2:
+ crt_erase (&v->crt, v->screen_start, v->screen_end, 1, v->color);
+ break;
+ }
+ break;
+ case 'K': /* EL */
+ {
+ CRT_Pos ls = { 0, v->pos.y };
+ CRT_Pos le = { v->current_size.x - 1, v->pos.y };
+ /* Different default */
+ if (len == 2)
+ narg = 0;
+
+ switch (narg) {
+ case 0:
+ crt_erase (&v->crt, v->pos, le, 1, v->color);
+ break;
+ case 1:
+ crt_erase (&v->crt, ls, v->pos, 1, v->color);
+ break;
+ case 2:
+ crt_erase (&v->crt, ls, le, 1, v->color);
+ break;
+ }
+ }
+ break;
+
+ case 'L': /* IL */
+ if ((v->pos.y >= v->top_margin.y)
+ && (v->pos.y <= v->bottom_margin.y)) {
+ while (narg--)
+ crt_scroll_down (&v->crt, v->pos, v->bottom_margin, 1, v->color);
+ }
+ break;
+
+ case 'M': /* DL */
+ if ((v->pos.y >= v->top_margin.y)
+ && (v->pos.y <= v->bottom_margin.y)) {
+ while (narg--) {
+ vt102_history (c, v->pos, v->bottom_margin);
+ crt_scroll_up (&v->crt, v->pos, v->bottom_margin, 1, v->color);
+ }
+ }
+ break;
+ case 'P': /* DCH */
+ while (narg--)
+ vt102_delete_from_line (v, v->pos);
+ break;
+ case 'S': /* SU */
+ while (narg--) {
+ vt102_history (c, v->top_margin, v->bottom_margin);
+ crt_scroll_up (&v->crt, v->top_margin, v->bottom_margin, 1, v->color);
+ }
+ break;
+ case 'T': /* SD */
+ while (narg--)
+ crt_scroll_down (&v->crt, v->top_margin, v->bottom_margin, 1,
+ v->color);
+ break;
+ case 'X': /* ECH */
+ {
+ CRT_Pos end = v->pos;
+ if (!narg)
+ narg++;
+
+ end.x += narg - 1;
+ if (end.x > v->bottom_margin.x)
+ end.x = v->bottom_margin.x;
+
+ crt_erase (&v->crt, v->pos, end, 1, v->color);
+ }
+ break;
+ case 'Z': /* CBT */
+ while (narg--)
+ vt102_cursor_retreat_tab (c->v);
+ break;
+ case '`': /* HPA */
+ vt102_cursor_absolute (v, narg - 1, v->pos.y);
+ break;
+ case 'b': /* REP */
+ while (narg--) {
+ vt102_regular_char (c, v, v->last_reg_char);
+ err += vt102_rx_hook (c, v->last_reg_char);
+ }
+ break;
+ case 'c': /* DA */
+ /* For some obscure reason some programs seem to send */
+ /* CSI [ ? .. c, which we ignore */
+ if (buf[1] != '?')
+ vt102_send_id (c, "\033[?2c");
+ break;
+ case 'd': /* VPA */
+ vt102_cursor_absolute (v, v->pos.x, narg - 1);
+ break;
+ case 'g': /* TBC */
+ /* Different default */
+ if (len == 2)
+ narg = 0;
+
+ switch (narg) {
+ case 0:
+ v->tabs[v->pos.x] = 0;
+ break;
+ case 2:
+ // FIXME: - LA120 says current line only WTF?
+ case 3:
+ memset (v->tabs, 0, sizeof (v->tabs));
+ break;
+ }
+ break;
+
+ case 'i': /* MC */
+ // Printer commands
+ // FIXME
+ break;
+ case 'h': /* SM */
+ case 'l': /* RM */
+ vt102_parse_mode_string (c, &buf[1], len - 1);
+ break;
+ case 'm': /* SGR */
+ vt102_parse_attr_string (v, &buf[1], len - 1);
+ break;
+ case 'n': /* DSR */
+ // Device status report
+ switch (buf[1]) {
+ case '5':
+ vt102_send_id (c, "\033[0n");
+ break;
+ case '6': /* CPR */
+ if (c->t) {
+ char buf[16];
+ int i;
+ i = sprintf (buf, "\033[%d;%dR", v->pos.y + 1, v->pos.x + 1);
+ c->t->xmit (c->t, buf, i);
+ }
+ break;
+ default:
+ // ?15n printer status
+ log_f (c->l, "<%s:%d unhandled DSR: \\033%s>", __FILE__,
+ __LINE__, buf);
+ }
+ break;
+ case 'q': /* DECLL */
+ // Load LED on off
+ break;
+ case 'r': /* DECSTBM */
+ v->top_margin = v->screen_start;
+ v->bottom_margin = v->screen_end;
+
+ if ((len > 2) && (ptr = index (arg, ';'))) {
+ ptr++;
+ v->top_margin.y = narg - 1;
+ v->bottom_margin.y = atoi (ptr) - 1;
+ }
+
+ if (v->top_margin.y < v->screen_start.y)
+ v->top_margin.y = v->screen_start.y;
+ if (v->top_margin.y > v->screen_end.y)
+ v->top_margin.y = v->screen_end.y;
+ if (v->bottom_margin.y < v->screen_start.y)
+ v->bottom_margin.y = v->screen_start.y;
+ if (v->bottom_margin.y > v->screen_end.y)
+ v->bottom_margin.y = v->screen_end.y;
+
+ vt102_cursor_home (v);
+ break;
+ case 's': /* SCP */
+ v->saved.pos = v->pos;
+ break;
+ case 'u': /* RCP */
+ v->pos = v->saved.pos;
+ vt102_cursor_normalize (v);
+ v->pending_wrap = 0;
+ break;
+ case 'y': /* DECTST */
+ // Invoke confidence test
+ break;
+ case 'z': /* DECVERP */
+ // request terminal parameters
+ break;
+
+ default:
+ log_f (c->l, "<%s:%d unhandled CSI: \\033%s>", __FILE__, __LINE__, buf);
+
+ ;
+ }
+ break;
+ default:
+ log_f (c->l, "<%s:%d unhandled sequence: \\033%s>", __FILE__,
+ __LINE__, buf);
+ ;
+ }
+
+
+
+ return err;
+}
+
+static int
+vt102_parse_esc (Context * c)
+{
+ int err = 0;
+ VT102 *v = c->v;
+ VT102_parser *p = &v->parser;
+
+#ifdef DEBUG
+ p->cmd_buf[p->cmd_ptr] = 0;
+ log_f (c->l, "<cmd in x=%3d y=%2d aw=%d vt=%d <ESC>%s >", v->pos.x,
+ v->pos.y, v->pending_wrap,
+ !v->private_modes[VT102_PRIVATE_MODE_VT52], p->cmd_buf);
+#endif
+
+ if (!v->private_modes[VT102_PRIVATE_MODE_VT52]) {
+ int ate = 1;
+
+ switch (p->cmd_buf[0]) {
+ case 'A': /* CURSOR UP */
+ vt102_cursor_relative (v, 0, -1);
+ break;
+ case 'B': /* CURSOR DOWN */
+ vt102_cursor_relative (v, 0, 1);
+ break;
+ case 'C': /* CURSOR RIGHT */
+ vt102_cursor_relative (v, 1, 0);
+ break;
+ case 'D': /* CURSOR LEFT */
+ vt102_cursor_relative (v, -1, 0);
+ break;
+ case 'F': /* ENTER GRAPHICS MODE */
+ v->cs = 1;
+ v->g[1] = VT102_CSID_VT52;
+ break;
+ case 'G': /* EXIT GRAPHICS MODE */
+ v->cs = 0;
+ v->g[0] = VT102_CSID_US;
+ break;
+ case 'H': /* CURSOR HOME */
+ vt102_cursor_absolute (v, 0, 0);
+ break;
+ case 'I': /* REVERSE LINE FEED */
+ vt102_cursor_retreat_line (c);
+ break;
+ case 'J': /* ERASE TO END OF SCREEN */
+ crt_erase (&v->crt, v->pos, v->screen_end, 1, v->color);
+ break;
+ case 'K': /* ERASE TO END OF LINE */
+ {
+ CRT_Pos le = { v->current_size.x - 1, v->pos.y };
+ crt_erase (&v->crt, v->pos, le, 1, v->color);
+ }
+ break;
+ case 'Y': /* DIRECT CURSOR ADDRESS */
+ vt102_cursor_absolute (v, p->cmd_buf[2] - 040, p->cmd_buf[1] - 040);
+ break;
+ case 'V': /* PRINT CURSOR LINE */
+ // Print current line
+ break;
+ case 'W':
+ // Printer on
+ break;
+ case 'X':
+ // printer off
+ break;
+ case ']': /* PRINT SCREEN */
+ // print screen
+ break;
+ case 'Z': // ID
+ vt102_send_id (c, "\033/K");
+ break;
+ case '^':
+ // Autoprint on
+ break;
+ case '_':
+ // Autoprint off
+ break;
+ case '=': /* ENTER ALTERNATE KEYPAD MODE */
+ v->application_keypad_mode = 1;
+ break;
+ case '>': /* EXIT ALTERNATE KEYPAD MODE */
+ v->application_keypad_mode = 0;
+ break;
+ default:
+ ate = 0;
+ }
+ if (ate)
+ return;
+ }
+
+
+ /*
+ * If you edit this switch don't forget to edit the length and
+ * termination tables
+ */
+ switch (p->cmd_buf[0]) {
+ case 'D': /* IND */
+ vt102_cursor_advance_line (c);
+ break;
+
+ case 'E': /* NEL */
+ vt102_cursor_advance_line (c);
+ v->pos.x = v->top_margin.x;
+ vt102_cursor_normalize (v);
+ v->pending_wrap = 0;
+ break;
+ /* F SSA */
+ /* G ESA */
+ case 'H': /* HTS */
+ v->tabs[v->pos.x]++;
+ break;
+ /* I HTJ */
+ /* J VTS */
+ /* K PLD */
+ /* L PLU */
+ case 'M': /* RI */
+ vt102_cursor_retreat_line (c);
+ break;
+ case 'N': /* SS2 */
+ // select G2 for one char
+ break;
+ case 'O': /* SS3 */
+ // select G3 for one char
+ break;
+ /* P DCS */
+ /* Q PU1 */
+ /* R PU2 */
+ /* S STS */
+ /* T CCH */
+ /* U MW */
+ /* V SPA */
+ /* W EPA */
+ /* X SOS */
+ /* Y SGCI */
+ case 'Z': /* DECID */
+ vt102_send_id (c, terminal_id);
+ break;
+ case 'c': /* RIS */
+ vt102_reset (c);
+ break;
+ case '=':
+ /* DECKPAM */
+ v->application_keypad_mode = 1;
+ break;
+ case '>':
+ /* DECKPNM */
+ v->application_keypad_mode = 0;
+ break;
+
+ case '#':
+ switch (p->cmd_buf[1]) {
+ case '3': /* DECDHL */
+ // top of double height line
+ case '4': /* DECDHL */
+ // bottom of double height line
+ case '5': /* DECSWL */
+ // single width line
+ case '6': /* DECDWL */
+ // double width line
+ break;
+ case '8': /* DECALN */
+ {
+ int i;
+ crt_erase (&v->crt, v->screen_start, v->screen_end, 1,
+ CRT_COLOR_NORMAL);
+ for (i = 0; i < CRT_ADDR_POS (&v->screen_end); ++i)
+ v->crt.screen[i].chr = 'E';
+ }
+ break;
+ default:
+
+ log_f (c->l,
+ "<%s:%d unhandled ESC: \\033 \\043 \\%03o (ESC # %c)>",
+ __FILE__, __LINE__, p->cmd_buf[1], safe_ch (p->cmd_buf[1]));
+
+ }
+ break;
+ case '<': /* DECANM */
+ // Set ansi mode - ignored
+ break;
+ case '7': /* DECSC */
+ vt102_save_state (v);
+ break;
+ case '8': /* DECRC */
+ vt102_restore_state (v);
+ break;
+ case ']':
+ /* Set various titles in xterm - ignored */
+ break;
+ case '[': /* CSI */
+ err += vt102_parse_csi (c, p->cmd_buf, p->cmd_ptr);
+ break;
+ /* Charsets */
+ case '(': /* SCS */
+ case ')': /* SCS */
+ case '+': /* SCS */
+ case '*': /* SCS */
+ case '%': /* SCS */
+ vt102_scs (c, p->cmd_buf[0], p->cmd_buf[1]);
+ break;
+ default:
+ log_f (c->l, "<%s:%d unhandled ESC: \\033 \\%03o (ESC %c)>", __FILE__,
+ __LINE__, p->cmd_buf[0], safe_ch (p->cmd_buf[0]));
+
+ ;
+ }
+
+ p->cmd_buf[p->cmd_ptr] = 0;
+#ifdef DEBUG
+ log_f (c->l, "<cmd out x=%3d y=%2d aw=%d>", v->pos.x, v->pos.y,
+ v->pending_wrap);
+#endif
+ return err;
+}
+
+void
+vt102_status_line (VT102 * v, char *str)
+{
+ int i;
+ CRT_CA *ca = &v->crt.screen[CRT_ADDR (v->current_size.y, 0)];
+
+ for (i = 0; i < v->current_size.x; ++i) {
+ ca->attr = CRT_ATTR_REVERSE;
+ ca->color = CRT_COLOR_NORMAL;
+ ca->chr = *str ? *str : ' ';
+ if (*str)
+ str++;
+ ca++;
+ }
+
+ for (; i < VT102_MAX_COLS; ++i) {
+ ca->attr = CRT_ATTR_NORMAL;
+ ca->color = CRT_COLOR_NORMAL;
+ ca->chr = ' ';
+ ca++;
+ }
+
+}
+
+
+void
+vt102_parser_reset (VT102_parser * p)
+{
+ p->in_cmd = 0;
+ p->cmd_more_bytes = 0;
+ p->cmd_termination = 0;
+ p->in_escape = 0;
+}
+
+
+void
+vt102_reset_state (Context * c)
+{
+ VT102 *v = c->v;
+ vt102_parser_reset (&v->parser);
+
+ v->attr = CRT_ATTR_NORMAL;
+ v->color = CRT_COLOR_NORMAL;
+
+ v->application_keypad_mode = 0;
+
+ v->current_size = v->original_size;
+
+ vt102_do_resize (c);
+
+ memset (v->modes, 0, VT102_NMODES);
+ memset (v->private_modes, 0, VT102_NMODES);
+
+ v->private_modes[VT102_PRIVATE_MODE_AUTO_WRAP] = 1;
+ v->private_modes[VT102_PRIVATE_MODE_AUTO_REPEAT] = 1;
+ v->private_modes[VT102_PRIVATE_MODE_SHOW_CURSOR] = 1;
+ v->private_modes[VT102_PRIVATE_MODE_VT52] = 1;
+ v->modes[VT102_MODE_LOCAL_ECHO_OFF] = 1;
+
+ vt102_reset_tabs (v);
+
+ v->g[0] = v->g[1] = VT102_CSID_US;
+ v->cs = 0;
+}
+
+static void
+pre_parse_cmd (int ch, VT102_parser * p)
+{
+ if (ch > TABLE_LENGTH)
+ return;
+ if (ch < 0)
+ return;
+
+ p->cmd_more_bytes = 0;
+ p->in_cmd = 0;
+
+ p->cmd_termination = vt102_cmd_termination[ch];
+ if (p->cmd_termination) {
+ p->in_cmd++;
+ return;
+ }
+
+ p->cmd_more_bytes = vt102_cmd_length[ch];
+
+ if (p->cmd_more_bytes) {
+ p->in_cmd++;
+ return;
+ }
+}
+
+int
+vt102_rx_hook (Context * c, int ch)
+{
+ if (!c->r)
+ return 0;
+ if (!c->r->rx)
+ return 0;
+ return c->r->rx (c->r, ch);
+}
+
+int
+vt102_parse_char (Context * c, int ch)
+{
+ int err = 0;
+ VT102 *v = c->v;
+ VT102_parser *p = &v->parser;
+
+#ifdef DEBUG
+ log_f (c->l, "char %3d %c ie=%d ic=%d cmb=%d ct=%3d %2d %2d %d", ch,
+ safe_ch (ch), p->in_escape, p->in_cmd, p->cmd_more_bytes,
+ p->cmd_termination, v->pos.x, v->pos.y, v->pending_wrap);
+#endif
+
+
+ if (ch == SYM_CHAR_RESET) {
+ vt102_reset_state (c);
+ } else if (p->in_cmd && !ctrl_chr (ch, p->cmd_termination)) {
+ p->cmd_buf[p->cmd_ptr++] = ch;
+ if (p->cmd_ptr == VT102_CMD_LEN)
+ p->in_cmd = 0;
+ if (p->cmd_more_bytes) {
+ p->cmd_more_bytes--;
+
+
+ if (!p->cmd_more_bytes == 1)
+ p->in_cmd = 0;
+ }
+
+ switch (p->cmd_termination) {
+ case 0:
+ break;
+ default:
+ if (p->cmd_termination == ch)
+ p->in_cmd = 0;
+ break;
+ case CSI_ENDER:
+ if (csi_ender (ch))
+ p->in_cmd = 0;
+ break;
+ }
+
+ if (!p->in_cmd) {
+ err += vt102_parse_esc (c);
+ p->cmd_more_bytes = 0;
+ p->cmd_termination = 0;
+ }
+ } else if (p->in_escape && !ctrl_chr (ch, 0)) {
+ p->cmd_ptr = 0;
+ p->cmd_buf[p->cmd_ptr++] = ch;
+ p->in_escape = 0;
+
+ pre_parse_cmd (ch, p);
+
+ if (!p->in_cmd)
+ err += vt102_parse_esc (c);
+ } else if ((ch >= 0x80) && (ch < 0xa0)) {
+ /* C1 characters */
+ switch (ch) {
+ case 0x80: /* @ PAD */
+ case 0x81: /* A HOP */
+ case 0x82: /* B BPH */
+ case 0x83: /* C NBH */
+ case 0x84: /* D IND */
+ case 0x85: /* E NEL */
+ case 0x86: /* F SSA */
+ case 0x87: /* G ESA */
+ case 0x88: /* H HTS */
+ case 0x89: /* I HTJ */
+ case 0x8a: /* J VTS */
+ case 0x8b: /* K PLD */
+ case 0x8c: /* L PLU */
+ case 0x8d: /* M RI */
+ case 0x8e: /* N SS2 */
+ case 0x8f: /* O SS3 */
+ case 0x90: /* P DCS */
+ case 0x91: /* Q PU1 */
+ case 0x92: /* R PU2 */
+ case 0x93: /* S STS */
+ case 0x94: /* T CCH */
+ case 0x95: /* U MW */
+ case 0x96: /* V SPA */
+ case 0x97: /* W EPA */
+ case 0x98: /* X SOS */
+ case 0x99: /* Y SGCI */
+ case 0x9a: /* Z DECID */
+ case 0x9b: /* [ CSI */
+ case 0x9c: /* \ ST */
+ case 0x9d: /* ] OSC */
+ case 0x9e: /* ^ PM */
+ case 0x9f: /* _ APC */
+ /* C1 chars are equavlent to ESC ch-0x40 */
+ p->cmd_ptr = 0;
+ p->cmd_buf[p->cmd_ptr++] = ch;
+ p->in_escape = 0;
+
+ pre_parse_cmd (ch, p);
+
+ if (!p->in_cmd)
+ err += vt102_parse_esc (c);
+ break;
+ }
+ } else {
+#ifdef DEBUG
+ if (ch != 27)
+ log_f (c->l,
+ "<chr in x=%3d y=%2d aw=%d \\%03o %3d %c",
+ v->pos.x, v->pos.y, v->pending_wrap, ch, ch, safe_ch (ch));
+
+#endif
+
+ switch (ch) {
+ case 0: /* NUL */
+ break;
+#ifdef HIDE_NON_PRINTABLES
+ case 1: /* SOH */
+ case 2: /* STX */
+ case 3: /* ETX */
+ case 4: /* EOT */
+ break;
+#endif
+ case 5: /* ENQ */
+ vt102_send_id (c, terminal_id);
+ break;
+#ifdef HIDE_NON_PRINTABLES
+ case 6: /* ACK */
+ break;
+#endif
+ case 7: /* BEL */
+ // FIXME beep
+ break;
+ case 8: /* BS */
+ vt102_cursor_retreat (c->v);
+ err += vt102_rx_hook (c, ch);
+ break;
+ case 9: /* HT */
+ vt102_cursor_advance_tab (c->v);
+ err += vt102_rx_hook (c, ch);
+ break;
+ case 10: /* LF */
+ case 11: /* VT */
+ case 12: /* FF */
+ vt102_cursor_advance_line (c);
+ err += vt102_rx_hook (c, 10);
+ if (!v->modes[VT102_MODE_NEWLINE_MODE])
+ break;
+ case 13: /* CR */
+ vt102_cursor_carriage_return (v);
+ err += vt102_rx_hook (c, 13);
+ break;
+ case 14: /* SO */
+ /* select G1 */
+ v->cs = 1;
+ break;
+ case 15: /* SI */
+ /* select G0 */
+ v->cs = 0;
+ break;
+#ifdef HIDE_NON_PRINTABLES
+ case 16: /* DLE */
+ case 17: /* DC1 */
+ case 18: /* DC2 */
+ case 19: /* DC3 */
+ case 20: /* DC4 */
+ case 21: /* NAK */
+ case 22: /* SYN */
+ case 23: /* ETB */
+ case 24: /* CAN */
+ case 25: /* EM */
+ case 26: /* SUB */
+ break;
+#endif
+ case 27: /* ESC */
+ p->in_escape++;
+ break;
+#ifdef HIDE_NON_PRINTABLES
+ case 28: /* FS */
+ case 29: /* GS */
+ case 30: /* RS */
+ case 31: /* US */
+ case 127: /* DEL */
+ break;
+#endif
+ default: /* regular character */
+ vt102_regular_char (c, v, ch);
+ err += vt102_rx_hook (c, ch);
+ }
+
+#ifdef DEBUG
+ if (ch != 27)
+ log_f (c->l, "<chr out x=%3d y=%2d aw=%d>", v->pos.x, v->pos.y,
+ v->pending_wrap);
+#endif
+ }
+
+ vt102_crt_update (c);
+
+ return err;
+}
+
+
+void
+vt102_send (Context * c, uint8_t key)
+{
+ uint8_t ch;
+
+ if (!c->t)
+ return;
+
+ if ((key > 31) && (key < 127)) {
+ c->t->xmit (c->t, &key, 1);
+ return;
+ }
+
+ switch (key) {
+ case 0: /* NUL */
+ case 1: /* SOH */
+ case 2: /* STX */
+ case 3: /* ETX */
+ case 4: /* EOT */
+ case 5: /* ENQ */
+ case 6: /* ACK */
+ case 7: /* BEL */
+ case 8: /* BS */
+ case 9: /* HT */
+ case 10: /* LF */
+ case 11: /* VT */
+ case 12: /* FF */
+ c->t->xmit (c->t, &key, 1);
+ break;
+ case 13: /* CR */
+ c->t->xmit (c->t, &key, 1);
+ if (c->v->modes[VT102_MODE_NEWLINE_MODE]) {
+ ch = 10;
+ c->t->xmit (c->t, &ch, 1);
+ }
+ break;
+ case 14: /* SO */
+ case 15: /* SI */
+ case 16: /* DLE */
+ case 17: /* DC1 */
+ case 18: /* DC2 */
+ case 19: /* DC3 */
+ case 20: /* DC4 */
+ case 21: /* NAK */
+ case 22: /* SYN */
+ case 23: /* ETB */
+ case 24: /* CAN */
+ case 25: /* EM */
+ case 26: /* SUB */
+ c->t->xmit (c->t, &key, 1);
+ break;
+ case 27: /* ESC */
+ case 28: /* FS */
+ case 29: /* GS */
+ case 30: /* RS */
+ case 31: /* US */
+ case 127: /* DEL */
+ c->t->xmit (c->t, &key, 1);
+ break;
+
+ case KEY_UP:
+ case KEY_DOWN:
+ case KEY_RIGHT:
+ case KEY_LEFT:
+ case KEY_HOME:
+ case KEY_MIDDLE:
+ case KEY_END:
+
+ if (c->v->private_modes[VT102_PRIVATE_MODE_CURSOR_MODE]) {
+ uint8_t buf[] = { 033, 'O', 'A' + (key - KEY_UP) };
+ c->t->xmit (c->t, &buf, sizeof (buf));
+ } else {
+ uint8_t buf[] = { 033, '[', 'A' + (key - KEY_UP) };
+ c->t->xmit (c->t, &buf, sizeof (buf));
+ }
+ break;
+ case KEY_STAR:
+ case KEY_PLUS:
+ case KEY_COMMA:
+ case KEY_PERIOD:
+ case KEY_DIVIDE:
+ case KEY_0:
+ case KEY_1:
+ case KEY_2:
+ case KEY_3:
+ case KEY_4:
+ case KEY_5:
+ case KEY_6:
+ case KEY_7:
+ case KEY_8:
+ case KEY_9:
+ if (c->v->application_keypad_mode) {
+ uint8_t buf[] = { 033, 'O', 'a' + (key - KEY_154) };
+ c->t->xmit (c->t, &buf, sizeof (buf));
+ } else {
+ static char kpoff[KEY_NUM] = {
+ [KEY_STAR] = '*',
+ [KEY_PLUS] = '+',
+ [KEY_COMMA] = ',',
+ [KEY_MINUS] = '-',
+ [KEY_PERIOD] = '.',
+ [KEY_DIVIDE] = '/',
+ [KEY_0] = '0',
+ [KEY_1] = '1',
+ [KEY_2] = '2',
+ [KEY_3] = '3',
+ [KEY_4] = '4',
+ [KEY_5] = '5',
+ [KEY_6] = '6',
+ [KEY_7] = '7',
+ [KEY_8] = '8',
+ [KEY_9] = '9'
+ };
+
+ c->t->xmit (c->t, &kpoff[key], 1);
+ }
+ break;
+ case KEY_ENTER:
+ if (c->v->application_keypad_mode) {
+ uint8_t buf[] = { 033, 'O', 'M' };
+ c->t->xmit (c->t, &buf, sizeof (buf));
+ } else {
+ ch = 13;
+ c->t->xmit (c->t, &ch, 1);
+ if (c->v->modes[VT102_MODE_NEWLINE_MODE]) {
+ ch = 10;
+ c->t->xmit (c->t, &ch, 1);
+ }
+ }
+ break;
+ case KEY_PF1:
+ case KEY_PF2:
+ case KEY_PF3:
+ case KEY_PF4:
+ {
+ uint8_t buf[] = { 033, 'O', 'P' + (key - KEY_PF1) };
+ c->t->xmit (c->t, &buf, sizeof (buf));
+ }
+ break;
+ case KEY_VT220_HOME:
+ case KEY_INSERT:
+ case KEY_DELETE:
+ case KEY_VT220_END:
+ case KEY_PGUP:
+ case KEY_PGDN:
+ case KEY_F1:
+ case KEY_F2:
+ case KEY_F3:
+ case KEY_F4:
+ case KEY_F5:
+ case KEY_F6:
+ case KEY_F7:
+ case KEY_F8:
+ case KEY_F9:
+ case KEY_F10:
+ case KEY_F11:
+ case KEY_F12:
+ case KEY_F13:
+ case KEY_F14:
+ case KEY_F15:
+ case KEY_F16:
+ case KEY_F17:
+ case KEY_F18:
+ case KEY_F19:
+ case KEY_F20:
+ {
+ uint8_t buf[16];
+ int i;
+ i = sprintf (buf, "\033[%d~", (key - KEY_180));
+ c->t->xmit (c->t, &buf, i);
+ }
+ break;
+ }
+
+}
+
+void
+vt102_reset (Context * c)
+{
+ VT102 *v = c->v;
+ VT102_parser *p = &v->parser;
+
+
+ crt_cls (&v->crt);
+ v->current_line = v->pos;
+ v->pending_wrap = 0;
+
+ v->screen_start.x = 0;
+ v->screen_start.y = 0;
+ v->current_size = v->original_size;
+ v->crt.size = v->current_size;
+ v->crt.size.y++;
+ v->screen_end = v->current_size;
+ v->screen_end.x--;
+ v->screen_end.y--;
+
+ vt102_cursor_home (v);
+ vt102_status_line (v, "");
+
+ vt102_reset_tabs (v);
+ v->current_line = v->pos;
+
+ vt102_parser_reset (p);
+ vt102_reset_state (c);
+
+ vt102_save_state (v);
+
+ v->last_reg_char = ' ';
+}
+
+VT102 *
+vt102_new (CRT_Pos * size)
+{
+ VT102 *v;
+
+ v = (VT102 *) xmalloc (sizeof (VT102));
+
+ v->xn_glitch = 1;
+
+
+ if (size) {
+ v->original_size = *size;
+
+ if (v->original_size.x < 1)
+ v->original_size.x = 1;
+ if (v->original_size.y < 1)
+ v->original_size.y = 1;
+
+ if (v->original_size.x > VT102_MAX_COLS)
+ v->original_size.x = VT102_MAX_COLS;
+ if (v->original_size.y > VT102_MAX_ROWS)
+ v->original_size.y = VT102_MAX_ROWS;
+
+ } else {
+ v->original_size.x = VT102_COLS_80;
+ v->original_size.y = VT102_ROWS_24;
+ }
+
+ return v;
+}
+
+void
+vt102_set_ansi (VT102 * v, int ansi)
+{
+ v->xn_glitch = ansi ? 0 : 1;
+}
+
+void
+vt102_resize (Context * c, CRT_Pos size)
+{
+ log_f (c->l, "<size change to %dx%d requested>", size.x, size.y);
+
+ if (!size.x)
+ size.x = c->v->current_size.x;
+ if (!size.y)
+ size.y = c->v->current_size.y;
+
+ if (size.x < 1)
+ size.x = 1;
+ if (size.y < 1)
+ size.y = 1;
+
+ if (size.x > VT102_MAX_COLS)
+ size.x = VT102_MAX_COLS;
+ if (size.y > VT102_MAX_ROWS)
+ size.y = VT102_MAX_ROWS;
+
+ c->v->current_size = size;
+ vt102_do_resize (c);
+}
+
+void
+vt102_free (VT102 * v)
+{
+ free (v);