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Editing: teken_subr.h
/*- * SPDX-License-Identifier: BSD-2-Clause-FreeBSD * * Copyright (c) 2008-2009 Ed Schouten <ed@FreeBSD.org> * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * $FreeBSD$ */ static void teken_subr_cursor_up(teken_t *, unsigned int); static void teken_subr_erase_line(const teken_t *, unsigned int); static void teken_subr_regular_character(teken_t *, teken_char_t); static void teken_subr_reset_to_initial_state(teken_t *); static void teken_subr_save_cursor(teken_t *); static inline int teken_tab_isset(const teken_t *t, unsigned int col) { unsigned int b, o; if (col >= T_NUMCOL) return ((col % 8) == 0); b = col / (sizeof(unsigned int) * 8); o = col % (sizeof(unsigned int) * 8); return (t->t_tabstops[b] & (1U << o)); } static inline void teken_tab_clear(teken_t *t, unsigned int col) { unsigned int b, o; if (col >= T_NUMCOL) return; b = col / (sizeof(unsigned int) * 8); o = col % (sizeof(unsigned int) * 8); t->t_tabstops[b] &= ~(1U << o); } static inline void teken_tab_set(teken_t *t, unsigned int col) { unsigned int b, o; if (col >= T_NUMCOL) return; b = col / (sizeof(unsigned int) * 8); o = col % (sizeof(unsigned int) * 8); t->t_tabstops[b] |= 1U << o; } static void teken_tab_default(teken_t *t) { unsigned int i; memset(t->t_tabstops, 0, T_NUMCOL / 8); for (i = 8; i < T_NUMCOL; i += 8) teken_tab_set(t, i); } static void teken_subr_do_scroll(const teken_t *t, int amount) { teken_rect_t tr; teken_pos_t tp; teken_assert(t->t_cursor.tp_row <= t->t_winsize.tp_row); teken_assert(t->t_scrollreg.ts_end <= t->t_winsize.tp_row); teken_assert(amount != 0); /* Copy existing data 1 line up. */ if (amount > 0) { /* Scroll down. */ /* Copy existing data up. */ if (t->t_scrollreg.ts_begin + amount < t->t_scrollreg.ts_end) { tr.tr_begin.tp_row = t->t_scrollreg.ts_begin + amount; tr.tr_begin.tp_col = 0; tr.tr_end.tp_row = t->t_scrollreg.ts_end; tr.tr_end.tp_col = t->t_winsize.tp_col; tp.tp_row = t->t_scrollreg.ts_begin; tp.tp_col = 0; teken_funcs_copy(t, &tr, &tp); tr.tr_begin.tp_row = t->t_scrollreg.ts_end - amount; } else { tr.tr_begin.tp_row = t->t_scrollreg.ts_begin; } /* Clear the last lines. */ tr.tr_begin.tp_col = 0; tr.tr_end.tp_row = t->t_scrollreg.ts_end; tr.tr_end.tp_col = t->t_winsize.tp_col; teken_funcs_fill(t, &tr, BLANK, &t->t_curattr); } else { /* Scroll up. */ amount = -amount; /* Copy existing data down. */ if (t->t_scrollreg.ts_begin + amount < t->t_scrollreg.ts_end) { tr.tr_begin.tp_row = t->t_scrollreg.ts_begin; tr.tr_begin.tp_col = 0; tr.tr_end.tp_row = t->t_scrollreg.ts_end - amount; tr.tr_end.tp_col = t->t_winsize.tp_col; tp.tp_row = t->t_scrollreg.ts_begin + amount; tp.tp_col = 0; teken_funcs_copy(t, &tr, &tp); tr.tr_end.tp_row = t->t_scrollreg.ts_begin + amount; } else { tr.tr_end.tp_row = t->t_scrollreg.ts_end; } /* Clear the first lines. */ tr.tr_begin.tp_row = t->t_scrollreg.ts_begin; tr.tr_begin.tp_col = 0; tr.tr_end.tp_col = t->t_winsize.tp_col; teken_funcs_fill(t, &tr, BLANK, &t->t_curattr); } } static ssize_t teken_subr_do_cpr(const teken_t *t, unsigned int cmd, char response[16]) { switch (cmd) { case 5: /* Operating status. */ strcpy(response, "0n"); return (2); case 6: { /* Cursor position. */ int len; len = snprintf(response, 16, "%u;%uR", (t->t_cursor.tp_row - t->t_originreg.ts_begin) + 1, t->t_cursor.tp_col + 1); if (len >= 16) return (-1); return (len); } case 15: /* Printer status. */ strcpy(response, "13n"); return (3); case 25: /* UDK status. */ strcpy(response, "20n"); return (3); case 26: /* Keyboard status. */ strcpy(response, "27;1n"); return (5); default: teken_printf("Unknown DSR\n"); return (-1); } } static void teken_subr_alignment_test(teken_t *t) { teken_rect_t tr; t->t_cursor.tp_row = t->t_cursor.tp_col = 0; t->t_scrollreg.ts_begin = 0; t->t_scrollreg.ts_end = t->t_winsize.tp_row; t->t_originreg = t->t_scrollreg; t->t_stateflags &= ~(TS_WRAPPED|TS_ORIGIN); teken_funcs_cursor(t); tr.tr_begin.tp_row = 0; tr.tr_begin.tp_col = 0; tr.tr_end = t->t_winsize; teken_funcs_fill(t, &tr, 'E', &t->t_defattr); } static void teken_subr_backspace(teken_t *t) { if (t->t_stateflags & TS_CONS25) { if (t->t_cursor.tp_col == 0) { if (t->t_cursor.tp_row == t->t_originreg.ts_begin) return; t->t_cursor.tp_row--; t->t_cursor.tp_col = t->t_winsize.tp_col - 1; } else { t->t_cursor.tp_col--; } } else { if (t->t_cursor.tp_col == 0) return; t->t_cursor.tp_col--; t->t_stateflags &= ~TS_WRAPPED; } teken_funcs_cursor(t); } static void teken_subr_bell(const teken_t *t) { teken_funcs_bell(t); } static void teken_subr_carriage_return(teken_t *t) { t->t_cursor.tp_col = 0; t->t_stateflags &= ~TS_WRAPPED; teken_funcs_cursor(t); } static void teken_subr_cursor_backward(teken_t *t, unsigned int ncols) { if (ncols > t->t_cursor.tp_col) t->t_cursor.tp_col = 0; else t->t_cursor.tp_col -= ncols; t->t_stateflags &= ~TS_WRAPPED; teken_funcs_cursor(t); } static void teken_subr_cursor_backward_tabulation(teken_t *t, unsigned int ntabs) { do { /* Stop when we've reached the beginning of the line. */ if (t->t_cursor.tp_col == 0) break; t->t_cursor.tp_col--; /* Tab marker set. */ if (teken_tab_isset(t, t->t_cursor.tp_col)) ntabs--; } while (ntabs > 0); teken_funcs_cursor(t); } static void teken_subr_cursor_down(teken_t *t, unsigned int nrows) { if (t->t_cursor.tp_row + nrows >= t->t_scrollreg.ts_end) t->t_cursor.tp_row = t->t_scrollreg.ts_end - 1; else t->t_cursor.tp_row += nrows; t->t_stateflags &= ~TS_WRAPPED; teken_funcs_cursor(t); } static void teken_subr_cursor_forward(teken_t *t, unsigned int ncols) { if (t->t_cursor.tp_col + ncols >= t->t_winsize.tp_col) t->t_cursor.tp_col = t->t_winsize.tp_col - 1; else t->t_cursor.tp_col += ncols; t->t_stateflags &= ~TS_WRAPPED; teken_funcs_cursor(t); } static void teken_subr_cursor_forward_tabulation(teken_t *t, unsigned int ntabs) { do { /* Stop when we've reached the end of the line. */ if (t->t_cursor.tp_col == t->t_winsize.tp_col - 1) break; t->t_cursor.tp_col++; /* Tab marker set. */ if (teken_tab_isset(t, t->t_cursor.tp_col)) ntabs--; } while (ntabs > 0); teken_funcs_cursor(t); } static void teken_subr_cursor_next_line(teken_t *t, unsigned int ncols) { t->t_cursor.tp_col = 0; teken_subr_cursor_down(t, ncols); } static void teken_subr_cursor_position(teken_t *t, unsigned int row, unsigned int col) { row = (row - 1) + t->t_originreg.ts_begin; t->t_cursor.tp_row = row < t->t_originreg.ts_end ? row : t->t_originreg.ts_end - 1; col--; t->t_cursor.tp_col = col < t->t_winsize.tp_col ? col : t->t_winsize.tp_col - 1; t->t_stateflags &= ~TS_WRAPPED; teken_funcs_cursor(t); } static void teken_subr_cursor_position_report(const teken_t *t, unsigned int cmd) { char response[18] = "\x1B["; ssize_t len; len = teken_subr_do_cpr(t, cmd, response + 2); if (len < 0) return; teken_funcs_respond(t, response, len + 2); } static void teken_subr_cursor_previous_line(teken_t *t, unsigned int ncols) { t->t_cursor.tp_col = 0; teken_subr_cursor_up(t, ncols); } static void teken_subr_cursor_up(teken_t *t, unsigned int nrows) { if (t->t_scrollreg.ts_begin + nrows >= t->t_cursor.tp_row) t->t_cursor.tp_row = t->t_scrollreg.ts_begin; else t->t_cursor.tp_row -= nrows; t->t_stateflags &= ~TS_WRAPPED; teken_funcs_cursor(t); } static void teken_subr_set_cursor_style(teken_t *t __unused, unsigned int style __unused) { /* TODO */ /* * CSI Ps SP q * Set cursor style (DECSCUSR), VT520. * Ps = 0 -> blinking block. * Ps = 1 -> blinking block (default). * Ps = 2 -> steady block. * Ps = 3 -> blinking underline. * Ps = 4 -> steady underline. * Ps = 5 -> blinking bar (xterm). * Ps = 6 -> steady bar (xterm). */ } static void teken_subr_delete_character(const teken_t *t, unsigned int ncols) { teken_rect_t tr; tr.tr_begin.tp_row = t->t_cursor.tp_row; tr.tr_end.tp_row = t->t_cursor.tp_row + 1; tr.tr_end.tp_col = t->t_winsize.tp_col; if (t->t_cursor.tp_col + ncols >= t->t_winsize.tp_col) { tr.tr_begin.tp_col = t->t_cursor.tp_col; } else { /* Copy characters to the left. */ tr.tr_begin.tp_col = t->t_cursor.tp_col + ncols; teken_funcs_copy(t, &tr, &t->t_cursor); tr.tr_begin.tp_col = t->t_winsize.tp_col - ncols; } /* Blank trailing columns. */ teken_funcs_fill(t, &tr, BLANK, &t->t_curattr); } static void teken_subr_delete_line(const teken_t *t, unsigned int nrows) { teken_rect_t tr; /* Ignore if outside scrolling region. */ if (t->t_cursor.tp_row < t->t_scrollreg.ts_begin || t->t_cursor.tp_row >= t->t_scrollreg.ts_end) return; tr.tr_begin.tp_col = 0; tr.tr_end.tp_row = t->t_scrollreg.ts_end; tr.tr_end.tp_col = t->t_winsize.tp_col; if (t->t_cursor.tp_row + nrows >= t->t_scrollreg.ts_end) { tr.tr_begin.tp_row = t->t_cursor.tp_row; } else { teken_pos_t tp; /* Copy rows up. */ tr.tr_begin.tp_row = t->t_cursor.tp_row + nrows; tp.tp_row = t->t_cursor.tp_row; tp.tp_col = 0; teken_funcs_copy(t, &tr, &tp); tr.tr_begin.tp_row = t->t_scrollreg.ts_end - nrows; } /* Blank trailing rows. */ teken_funcs_fill(t, &tr, BLANK, &t->t_curattr); } static void teken_subr_device_control_string(teken_t *t) { teken_printf("Unsupported device control string\n"); t->t_stateflags |= TS_INSTRING; } static void teken_subr_device_status_report(const teken_t *t, unsigned int cmd) { char response[19] = "\x1B[?"; ssize_t len; len = teken_subr_do_cpr(t, cmd, response + 3); if (len < 0) return; teken_funcs_respond(t, response, len + 3); } static void teken_subr_double_height_double_width_line_top(const teken_t *t) { (void)t; teken_printf("double height double width top\n"); } static void teken_subr_double_height_double_width_line_bottom(const teken_t *t) { (void)t; teken_printf("double height double width bottom\n"); } static void teken_subr_erase_character(const teken_t *t, unsigned int ncols) { teken_rect_t tr; tr.tr_begin = t->t_cursor; tr.tr_end.tp_row = t->t_cursor.tp_row + 1; if (t->t_cursor.tp_col + ncols >= t->t_winsize.tp_col) tr.tr_end.tp_col = t->t_winsize.tp_col; else tr.tr_end.tp_col = t->t_cursor.tp_col + ncols; teken_funcs_fill(t, &tr, BLANK, &t->t_curattr); } static void teken_subr_erase_display(const teken_t *t, unsigned int mode) { teken_rect_t r; r.tr_begin.tp_col = 0; r.tr_end.tp_col = t->t_winsize.tp_col; switch (mode) { case 1: /* Erase from the top to the cursor. */ teken_subr_erase_line(t, 1); /* Erase lines above. */ if (t->t_cursor.tp_row == 0) return; r.tr_begin.tp_row = 0; r.tr_end.tp_row = t->t_cursor.tp_row; break; case 2: /* Erase entire display. */ r.tr_begin.tp_row = 0; r.tr_end.tp_row = t->t_winsize.tp_row; break; default: /* Erase from cursor to the bottom. */ teken_subr_erase_line(t, 0); /* Erase lines below. */ if (t->t_cursor.tp_row == t->t_winsize.tp_row - 1) return; r.tr_begin.tp_row = t->t_cursor.tp_row + 1; r.tr_end.tp_row = t->t_winsize.tp_row; break; } teken_funcs_fill(t, &r, BLANK, &t->t_curattr); } static void teken_subr_erase_line(const teken_t *t, unsigned int mode) { teken_rect_t r; r.tr_begin.tp_row = t->t_cursor.tp_row; r.tr_end.tp_row = t->t_cursor.tp_row + 1; switch (mode) { case 1: /* Erase from the beginning of the line to the cursor. */ r.tr_begin.tp_col = 0; r.tr_end.tp_col = t->t_cursor.tp_col + 1; break; case 2: /* Erase entire line. */ r.tr_begin.tp_col = 0; r.tr_end.tp_col = t->t_winsize.tp_col; break; default: /* Erase from cursor to the end of the line. */ r.tr_begin.tp_col = t->t_cursor.tp_col; r.tr_end.tp_col = t->t_winsize.tp_col; break; } teken_funcs_fill(t, &r, BLANK, &t->t_curattr); } static void teken_subr_g0_scs_special_graphics(teken_t *t) { t->t_scs[0] = teken_scs_special_graphics; } static void teken_subr_g0_scs_uk_national(teken_t *t) { t->t_scs[0] = teken_scs_uk_national; } static void teken_subr_g0_scs_us_ascii(teken_t *t) { t->t_scs[0] = teken_scs_us_ascii; } static void teken_subr_g1_scs_special_graphics(teken_t *t) { t->t_scs[1] = teken_scs_special_graphics; } static void teken_subr_g1_scs_uk_national(teken_t *t) { t->t_scs[1] = teken_scs_uk_national; } static void teken_subr_g1_scs_us_ascii(teken_t *t) { t->t_scs[1] = teken_scs_us_ascii; } static void teken_subr_horizontal_position_absolute(teken_t *t, unsigned int col) { col--; t->t_cursor.tp_col = col < t->t_winsize.tp_col ? col : t->t_winsize.tp_col - 1; t->t_stateflags &= ~TS_WRAPPED; teken_funcs_cursor(t); } static void teken_subr_horizontal_tab(teken_t *t) { teken_subr_cursor_forward_tabulation(t, 1); } static void teken_subr_horizontal_tab_set(teken_t *t) { teken_tab_set(t, t->t_cursor.tp_col); } static void teken_subr_index(teken_t *t) { if (t->t_cursor.tp_row < t->t_scrollreg.ts_end - 1) { t->t_cursor.tp_row++; t->t_stateflags &= ~TS_WRAPPED; teken_funcs_cursor(t); } else { teken_subr_do_scroll(t, 1); } } static void teken_subr_insert_character(const teken_t *t, unsigned int ncols) { teken_rect_t tr; tr.tr_begin = t->t_cursor; tr.tr_end.tp_row = t->t_cursor.tp_row + 1; if (t->t_cursor.tp_col + ncols >= t->t_winsize.tp_col) { tr.tr_end.tp_col = t->t_winsize.tp_col; } else { teken_pos_t tp; /* Copy characters to the right. */ tr.tr_end.tp_col = t->t_winsize.tp_col - ncols; tp.tp_row = t->t_cursor.tp_row; tp.tp_col = t->t_cursor.tp_col + ncols; teken_funcs_copy(t, &tr, &tp); tr.tr_end.tp_col = t->t_cursor.tp_col + ncols; } /* Blank current location. */ teken_funcs_fill(t, &tr, BLANK, &t->t_curattr); } static void teken_subr_insert_line(const teken_t *t, unsigned int nrows) { teken_rect_t tr; /* Ignore if outside scrolling region. */ if (t->t_cursor.tp_row < t->t_scrollreg.ts_begin || t->t_cursor.tp_row >= t->t_scrollreg.ts_end) return; tr.tr_begin.tp_row = t->t_cursor.tp_row; tr.tr_begin.tp_col = 0; tr.tr_end.tp_col = t->t_winsize.tp_col; if (t->t_cursor.tp_row + nrows >= t->t_scrollreg.ts_end) { tr.tr_end.tp_row = t->t_scrollreg.ts_end; } else { teken_pos_t tp; /* Copy lines down. */ tr.tr_end.tp_row = t->t_scrollreg.ts_end - nrows; tp.tp_row = t->t_cursor.tp_row + nrows; tp.tp_col = 0; teken_funcs_copy(t, &tr, &tp); tr.tr_end.tp_row = t->t_cursor.tp_row + nrows; } /* Blank current location. */ teken_funcs_fill(t, &tr, BLANK, &t->t_curattr); } static void teken_subr_keypad_application_mode(const teken_t *t) { teken_funcs_param(t, TP_KEYPADAPP, 1); } static void teken_subr_keypad_numeric_mode(const teken_t *t) { teken_funcs_param(t, TP_KEYPADAPP, 0); } static void teken_subr_newline(teken_t *t) { t->t_cursor.tp_row++; if (t->t_cursor.tp_row >= t->t_scrollreg.ts_end) { teken_subr_do_scroll(t, 1); t->t_cursor.tp_row = t->t_scrollreg.ts_end - 1; } t->t_stateflags &= ~TS_WRAPPED; teken_funcs_cursor(t); } static void teken_subr_newpage(teken_t *t) { if (t->t_stateflags & TS_CONS25) { teken_rect_t tr; /* Clear screen. */ tr.tr_begin.tp_row = t->t_originreg.ts_begin; tr.tr_begin.tp_col = 0; tr.tr_end.tp_row = t->t_originreg.ts_end; tr.tr_end.tp_col = t->t_winsize.tp_col; teken_funcs_fill(t, &tr, BLANK, &t->t_curattr); /* Cursor at top left. */ t->t_cursor.tp_row = t->t_originreg.ts_begin; t->t_cursor.tp_col = 0; t->t_stateflags &= ~TS_WRAPPED; teken_funcs_cursor(t); } else { teken_subr_newline(t); } } static void teken_subr_next_line(teken_t *t) { t->t_cursor.tp_col = 0; teken_subr_newline(t); } static void teken_subr_operating_system_command(teken_t *t) { teken_printf("Unsupported operating system command\n"); t->t_stateflags |= TS_INSTRING; } static void teken_subr_pan_down(const teken_t *t, unsigned int nrows) { teken_subr_do_scroll(t, (int)nrows); } static void teken_subr_pan_up(const teken_t *t, unsigned int nrows) { teken_subr_do_scroll(t, -(int)nrows); } static void teken_subr_primary_device_attributes(const teken_t *t, unsigned int request) { if (request == 0) { const char response[] = "\x1B[?1;2c"; teken_funcs_respond(t, response, sizeof response - 1); } else { teken_printf("Unknown DA1\n"); } } static void teken_subr_do_putchar(teken_t *t, const teken_pos_t *tp, teken_char_t c, int width) { t->t_last = c; if (t->t_stateflags & TS_INSERT && tp->tp_col < t->t_winsize.tp_col - width) { teken_rect_t ctr; teken_pos_t ctp; /* Insert mode. Move existing characters to the right. */ ctr.tr_begin = *tp; ctr.tr_end.tp_row = tp->tp_row + 1; ctr.tr_end.tp_col = t->t_winsize.tp_col - width; ctp.tp_row = tp->tp_row; ctp.tp_col = tp->tp_col + width; teken_funcs_copy(t, &ctr, &ctp); } teken_funcs_putchar(t, tp, c, &t->t_curattr); if (width == 2 && tp->tp_col + 1 < t->t_winsize.tp_col) { teken_pos_t tp2; teken_attr_t attr; /* Print second half of CJK fullwidth character. */ tp2.tp_row = tp->tp_row; tp2.tp_col = tp->tp_col + 1; attr = t->t_curattr; attr.ta_format |= TF_CJK_RIGHT; teken_funcs_putchar(t, &tp2, c, &attr); } } static void teken_subr_regular_character(teken_t *t, teken_char_t c) { int width; if (t->t_stateflags & TS_8BIT) { if (!(t->t_stateflags & TS_CONS25) && (c <= 0x1b || c == 0x7f)) return; c = teken_scs_process(t, c); width = 1; } else { c = teken_scs_process(t, c); width = teken_wcwidth(c); /* XXX: Don't process zero-width characters yet. */ if (width <= 0) return; } if (t->t_stateflags & TS_CONS25) { teken_subr_do_putchar(t, &t->t_cursor, c, width); t->t_cursor.tp_col += width; if (t->t_cursor.tp_col >= t->t_winsize.tp_col) { if (t->t_cursor.tp_row == t->t_scrollreg.ts_end - 1) { /* Perform scrolling. */ teken_subr_do_scroll(t, 1); } else { /* No scrolling needed. */ if (t->t_cursor.tp_row < t->t_winsize.tp_row - 1) t->t_cursor.tp_row++; } t->t_cursor.tp_col = 0; } } else if (t->t_stateflags & TS_AUTOWRAP && ((t->t_stateflags & TS_WRAPPED && t->t_cursor.tp_col + 1 == t->t_winsize.tp_col) || t->t_cursor.tp_col + width > t->t_winsize.tp_col)) { teken_pos_t tp; /* * Perform line wrapping, if: * - Autowrapping is enabled, and * - We're in the wrapped state at the last column, or * - The character to be printed does not fit anymore. */ if (t->t_cursor.tp_row == t->t_scrollreg.ts_end - 1) { /* Perform scrolling. */ teken_subr_do_scroll(t, 1); tp.tp_row = t->t_scrollreg.ts_end - 1; } else { /* No scrolling needed. */ tp.tp_row = t->t_cursor.tp_row + 1; if (tp.tp_row == t->t_winsize.tp_row) { /* * Corner case: regular character * outside scrolling region, but at the * bottom of the screen. */ teken_subr_do_putchar(t, &t->t_cursor, c, width); return; } } tp.tp_col = 0; teken_subr_do_putchar(t, &tp, c, width); t->t_cursor.tp_row = tp.tp_row; t->t_cursor.tp_col = width; t->t_stateflags &= ~TS_WRAPPED; } else { /* No line wrapping needed. */ teken_subr_do_putchar(t, &t->t_cursor, c, width); t->t_cursor.tp_col += width; if (t->t_cursor.tp_col >= t->t_winsize.tp_col) { t->t_stateflags |= TS_WRAPPED; t->t_cursor.tp_col = t->t_winsize.tp_col - 1; } else { t->t_stateflags &= ~TS_WRAPPED; } } teken_funcs_cursor(t); } static void teken_subr_reset_dec_mode(teken_t *t, unsigned int cmd) { switch (cmd) { case 1: /* Cursor keys mode. */ t->t_stateflags &= ~TS_CURSORKEYS; break; case 2: /* DECANM: ANSI/VT52 mode. */ teken_printf("DECRST VT52\n"); break; case 3: /* 132 column mode. */ teken_funcs_param(t, TP_132COLS, 0); teken_subr_reset_to_initial_state(t); break; case 5: /* Inverse video. */ teken_printf("DECRST inverse video\n"); break; case 6: /* Origin mode. */ t->t_stateflags &= ~TS_ORIGIN; t->t_originreg.ts_begin = 0; t->t_originreg.ts_end = t->t_winsize.tp_row; t->t_cursor.tp_row = t->t_cursor.tp_col = 0; t->t_stateflags &= ~TS_WRAPPED; teken_funcs_cursor(t); break; case 7: /* Autowrap mode. */ t->t_stateflags &= ~TS_AUTOWRAP; break; case 8: /* Autorepeat mode. */ teken_funcs_param(t, TP_AUTOREPEAT, 0); break; case 25: /* Hide cursor. */ teken_funcs_param(t, TP_SHOWCURSOR, 0); break; case 40: /* Disallow 132 columns. */ teken_printf("DECRST allow 132\n"); break; case 45: /* Disable reverse wraparound. */ teken_printf("DECRST reverse wraparound\n"); break; case 47: /* Switch to alternate buffer. */ teken_printf("Switch to alternate buffer\n"); break; case 1000: /* Mouse input. */ teken_funcs_param(t, TP_MOUSE, 0); break; default: teken_printf("Unknown DECRST: %u\n", cmd); } } static void teken_subr_reset_mode(teken_t *t, unsigned int cmd) { switch (cmd) { case 4: t->t_stateflags &= ~TS_INSERT; break; default: teken_printf("Unknown reset mode: %u\n", cmd); } } static void teken_subr_do_resize(teken_t *t) { t->t_scrollreg.ts_begin = 0; t->t_scrollreg.ts_end = t->t_winsize.tp_row; t->t_originreg = t->t_scrollreg; } static void teken_subr_do_reset(teken_t *t) { t->t_curattr = t->t_defattr; t->t_cursor.tp_row = t->t_cursor.tp_col = 0; t->t_scrollreg.ts_begin = 0; t->t_scrollreg.ts_end = t->t_winsize.tp_row; t->t_originreg = t->t_scrollreg; t->t_stateflags &= TS_8BIT | TS_CONS25 | TS_CONS25KEYS; t->t_stateflags |= TS_AUTOWRAP; t->t_scs[0] = teken_scs_us_ascii; t->t_scs[1] = teken_scs_us_ascii; t->t_curscs = 0; teken_subr_save_cursor(t); teken_tab_default(t); } static void teken_subr_reset_to_initial_state(teken_t *t) { teken_subr_do_reset(t); teken_subr_erase_display(t, 2); teken_funcs_param(t, TP_SHOWCURSOR, 1); teken_funcs_cursor(t); } static void teken_subr_restore_cursor(teken_t *t) { t->t_cursor = t->t_saved_cursor; t->t_curattr = t->t_saved_curattr; t->t_scs[t->t_curscs] = t->t_saved_curscs; t->t_stateflags &= ~TS_WRAPPED; /* Get out of origin mode when the cursor is moved outside. */ if (t->t_cursor.tp_row < t->t_originreg.ts_begin || t->t_cursor.tp_row >= t->t_originreg.ts_end) { t->t_stateflags &= ~TS_ORIGIN; t->t_originreg.ts_begin = 0; t->t_originreg.ts_end = t->t_winsize.tp_row; } teken_funcs_cursor(t); } static void teken_subr_reverse_index(teken_t *t) { if (t->t_cursor.tp_row > t->t_scrollreg.ts_begin) { t->t_cursor.tp_row--; t->t_stateflags &= ~TS_WRAPPED; teken_funcs_cursor(t); } else { teken_subr_do_scroll(t, -1); } } static void teken_subr_save_cursor(teken_t *t) { t->t_saved_cursor = t->t_cursor; t->t_saved_curattr = t->t_curattr; t->t_saved_curscs = t->t_scs[t->t_curscs]; } static void teken_subr_secondary_device_attributes(const teken_t *t, unsigned int request) { if (request == 0) { const char response[] = "\x1B[>0;10;0c"; teken_funcs_respond(t, response, sizeof response - 1); } else { teken_printf("Unknown DA2\n"); } } static void teken_subr_set_dec_mode(teken_t *t, unsigned int cmd) { switch (cmd) { case 1: /* Cursor keys mode. */ t->t_stateflags |= TS_CURSORKEYS; break; case 2: /* DECANM: ANSI/VT52 mode. */ teken_printf("DECSET VT52\n"); break; case 3: /* 132 column mode. */ teken_funcs_param(t, TP_132COLS, 1); teken_subr_reset_to_initial_state(t); break; case 5: /* Inverse video. */ teken_printf("DECSET inverse video\n"); break; case 6: /* Origin mode. */ t->t_stateflags |= TS_ORIGIN; t->t_originreg = t->t_scrollreg; t->t_cursor.tp_row = t->t_scrollreg.ts_begin; t->t_cursor.tp_col = 0; t->t_stateflags &= ~TS_WRAPPED; teken_funcs_cursor(t); break; case 7: /* Autowrap mode. */ t->t_stateflags |= TS_AUTOWRAP; break; case 8: /* Autorepeat mode. */ teken_funcs_param(t, TP_AUTOREPEAT, 1); break; case 25: /* Display cursor. */ teken_funcs_param(t, TP_SHOWCURSOR, 1); break; case 40: /* Allow 132 columns. */ teken_printf("DECSET allow 132\n"); break; case 45: /* Enable reverse wraparound. */ teken_printf("DECSET reverse wraparound\n"); break; case 47: /* Switch to alternate buffer. */ teken_printf("Switch away from alternate buffer\n"); break; case 1000: /* Mouse input. */ teken_funcs_param(t, TP_MOUSE, 1); break; default: teken_printf("Unknown DECSET: %u\n", cmd); } } static void teken_subr_set_mode(teken_t *t, unsigned int cmd) { switch (cmd) { case 4: teken_printf("Insert mode\n"); t->t_stateflags |= TS_INSERT; break; default: teken_printf("Unknown set mode: %u\n", cmd); } } static void teken_subr_set_graphic_rendition(teken_t *t, unsigned int ncmds, const unsigned int cmds[]) { unsigned int i, n; /* No attributes means reset. */ if (ncmds == 0) { t->t_curattr = t->t_defattr; return; } for (i = 0; i < ncmds; i++) { n = cmds[i]; switch (n) { case 0: /* Reset. */ t->t_curattr = t->t_defattr; break; case 1: /* Bold. */ t->t_curattr.ta_format |= TF_BOLD; break; case 4: /* Underline. */ t->t_curattr.ta_format |= TF_UNDERLINE; break; case 5: /* Blink. */ t->t_curattr.ta_format |= TF_BLINK; break; case 7: /* Reverse. */ t->t_curattr.ta_format |= TF_REVERSE; break; case 22: /* Remove bold. */ t->t_curattr.ta_format &= ~TF_BOLD; break; case 24: /* Remove underline. */ t->t_curattr.ta_format &= ~TF_UNDERLINE; break; case 25: /* Remove blink. */ t->t_curattr.ta_format &= ~TF_BLINK; break; case 27: /* Remove reverse. */ t->t_curattr.ta_format &= ~TF_REVERSE; break; case 30: /* Set foreground color: black */ case 31: /* Set foreground color: red */ case 32: /* Set foreground color: green */ case 33: /* Set foreground color: brown */ case 34: /* Set foreground color: blue */ case 35: /* Set foreground color: magenta */ case 36: /* Set foreground color: cyan */ case 37: /* Set foreground color: white */ t->t_curattr.ta_fgcolor = n - 30; break; case 38: /* Set foreground color: 256 color mode */ if (i + 2 >= ncmds || cmds[i + 1] != 5) continue; t->t_curattr.ta_fgcolor = cmds[i + 2]; i += 2; break; case 39: /* Set default foreground color. */ t->t_curattr.ta_fgcolor = t->t_defattr.ta_fgcolor; break; case 40: /* Set background color: black */ case 41: /* Set background color: red */ case 42: /* Set background color: green */ case 43: /* Set background color: brown */ case 44: /* Set background color: blue */ case 45: /* Set background color: magenta */ case 46: /* Set background color: cyan */ case 47: /* Set background color: white */ t->t_curattr.ta_bgcolor = n - 40; break; case 48: /* Set background color: 256 color mode */ if (i + 2 >= ncmds || cmds[i + 1] != 5) continue; t->t_curattr.ta_bgcolor = cmds[i + 2]; i += 2; break; case 49: /* Set default background color. */ t->t_curattr.ta_bgcolor = t->t_defattr.ta_bgcolor; break; case 90: /* Set bright foreground color: black */ case 91: /* Set bright foreground color: red */ case 92: /* Set bright foreground color: green */ case 93: /* Set bright foreground color: brown */ case 94: /* Set bright foreground color: blue */ case 95: /* Set bright foreground color: magenta */ case 96: /* Set bright foreground color: cyan */ case 97: /* Set bright foreground color: white */ t->t_curattr.ta_fgcolor = (n - 90) + 8; break; case 100: /* Set bright background color: black */ case 101: /* Set bright background color: red */ case 102: /* Set bright background color: green */ case 103: /* Set bright background color: brown */ case 104: /* Set bright background color: blue */ case 105: /* Set bright background color: magenta */ case 106: /* Set bright background color: cyan */ case 107: /* Set bright background color: white */ t->t_curattr.ta_bgcolor = (n - 100) + 8; break; default: teken_printf("unsupported attribute %u\n", n); } } } static void teken_subr_set_top_and_bottom_margins(teken_t *t, unsigned int top, unsigned int bottom) { /* Adjust top row number. */ if (top > 0) top--; /* Adjust bottom row number. */ if (bottom == 0 || bottom > t->t_winsize.tp_row) bottom = t->t_winsize.tp_row; /* Invalid arguments. */ if (top >= bottom - 1) { top = 0; bottom = t->t_winsize.tp_row; } /* Apply scrolling region. */ t->t_scrollreg.ts_begin = top; t->t_scrollreg.ts_end = bottom; if (t->t_stateflags & TS_ORIGIN) t->t_originreg = t->t_scrollreg; /* Home cursor to the top left of the scrolling region. */ t->t_cursor.tp_row = t->t_originreg.ts_begin; t->t_cursor.tp_col = 0; t->t_stateflags &= ~TS_WRAPPED; teken_funcs_cursor(t); } static void teken_subr_single_height_double_width_line(const teken_t *t) { (void)t; teken_printf("single height double width???\n"); } static void teken_subr_single_height_single_width_line(const teken_t *t) { (void)t; teken_printf("single height single width???\n"); } static void teken_subr_string_terminator(const teken_t *t) { (void)t; /* * Strings are already terminated in teken_input_char() when ^[ * is inserted. */ } static void teken_subr_tab_clear(teken_t *t, unsigned int cmd) { switch (cmd) { case 0: teken_tab_clear(t, t->t_cursor.tp_col); break; case 3: memset(t->t_tabstops, 0, T_NUMCOL / 8); break; default: break; } } static void teken_subr_vertical_position_absolute(teken_t *t, unsigned int row) { row = (row - 1) + t->t_originreg.ts_begin; t->t_cursor.tp_row = row < t->t_originreg.ts_end ? row : t->t_originreg.ts_end - 1; t->t_stateflags &= ~TS_WRAPPED; teken_funcs_cursor(t); } static void teken_subr_repeat_last_graphic_char(teken_t *t, unsigned int rpts) { unsigned int max_repetitions; max_repetitions = t->t_winsize.tp_row * t->t_winsize.tp_col; if (rpts > max_repetitions) rpts = max_repetitions; for (; t->t_last != 0 && rpts > 0; rpts--) teken_subr_regular_character(t, t->t_last); }
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