+++ /dev/null
-/*
- LICENSE INFORMATION:
- This program is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License (LGPL) as published by the Free Software Foundation.
-
- Please refer to the COPYING file for more information.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public
- License along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-
- Copyright © 2004 Bruno T. C. de Oliveira
- Copyright © 2006 Pierre Habouzit
- */
-
-#include <string.h>
-#include <stdio.h>
-#include <ctype.h>
-
-#include "madtty.h"
-#include "madtty_priv.h"
-
-#define MAX_CSI_ES_PARAMS 32
-
-static inline void clamp_cursor_to_bounds(RoteTerm *rt)
-{
- if (rt->crow < 0) {
- rt->curpos_dirty = true;
- rt->crow = 0;
- }
- if (rt->ccol < 0) {
- rt->curpos_dirty = true;
- rt->ccol = 0;
- }
-
- if (rt->crow >= rt->rows) {
- rt->curpos_dirty = true;
- rt->crow = rt->rows - 1;
- }
- if (rt->ccol >= rt->cols) {
- rt->curpos_dirty = true;
- rt->ccol = rt->cols - 1;
- }
-}
-
-static void cursor_line_down(RoteTerm *rt)
-{
- int i;
-
- rt->crow++;
- rt->curpos_dirty = true;
- if (rt->crow <= rt->pd->scrollbottom)
- return;
-
- /* must scroll the scrolling region up by 1 line, and put cursor on
- * last line of it */
- rt->crow = rt->pd->scrollbottom;
-
- for (i = rt->pd->scrolltop; i < rt->pd->scrollbottom; i++) {
- rt->line_dirty[i] = true;
- memcpy(rt->cells[i], rt->cells[i+1], sizeof(RoteCell) * rt->cols);
- }
-
- rt->line_dirty[rt->pd->scrollbottom] = true;
-
- /* clear last row of the scrolling region */
- for (i = 0; i < rt->cols; i++) {
- rt->cells[rt->pd->scrollbottom][i].ch = 0x20;
- rt->cells[rt->pd->scrollbottom][i].attr = 0x70;
- }
-}
-
-static void cursor_line_up(RoteTerm *rt)
-{
- int i;
-
- rt->crow--;
- rt->curpos_dirty = true;
- if (rt->crow >= rt->pd->scrolltop)
- return;
-
- /* must scroll the scrolling region up by 1 line, and put cursor on
- * first line of it */
- rt->crow = rt->pd->scrolltop;
-
- for (i = rt->pd->scrollbottom; i > rt->pd->scrolltop; i--) {
- rt->line_dirty[i] = true;
- memcpy(rt->cells[i], rt->cells[i-1], sizeof(RoteCell) * rt->cols);
- }
-
- rt->line_dirty[rt->pd->scrolltop] = true;
-
- /* clear first row of the scrolling region */
- for (i = 0; i < rt->cols; i++) {
- rt->cells[rt->pd->scrolltop][i].ch = 0x20;
- rt->cells[rt->pd->scrolltop][i].attr = 0x70;
- }
-}
-
-static inline void put_normal_char(RoteTerm *rt, int c)
-{
- if (rt->ccol >= rt->cols) {
- rt->ccol = 0;
- cursor_line_down(rt);
- }
-
- if (rt->insert) {
- int i;
-
- for(i = rt->cols - 1; i >= rt->ccol+1; i--) {
- rt->cells[rt->crow][i] = rt->cells[rt->crow][i-1];
- }
- }
-
- rt->cells[rt->crow][rt->ccol].ch = c;
- rt->cells[rt->crow][rt->ccol].attr = rt->curattr;
- rt->ccol++;
-
- rt->line_dirty[rt->crow] = true;
- rt->curpos_dirty = true;
-}
-
-static inline void put_graphmode_char(RoteTerm *rt, int c)
-{
- char nc;
- /* do some very pitiful translation to regular ascii chars */
- switch (c) {
- case 'j': case 'k': case 'l': case 'm': case 'n': case 't':
- case 'u': case 'v': case 'w':
- nc = '+'; break;
- case 'x':
- nc = '|'; break;
- default:
- nc = '%';
- }
-
- put_normal_char(rt, nc);
-}
-
-static inline void new_escape_sequence(RoteTerm *rt)
-{
- rt->pd->escaped = true;
- rt->pd->esbuf_len = 0;
- rt->pd->esbuf[0] = '\0';
-}
-
-static inline void cancel_escape_sequence(RoteTerm *rt)
-{
- rt->pd->escaped = false;
- rt->pd->esbuf_len = 0;
- rt->pd->esbuf[0] = '\0';
-}
-
-static void handle_control_char(RoteTerm *rt, int c)
-{
- switch (c) {
- case '\r': /* carriage return */
- rt->ccol = 0;
- break;
-
- case '\n': /* line feed */
- rt->ccol = 0;
- cursor_line_down(rt);
- rt->curpos_dirty = true;
- break;
-
- case '\b': /* backspace */
- if (rt->ccol > 0)
- rt->ccol--;
- rt->curpos_dirty = true;
- break;
-
- case '\t': /* tab */
- rt->ccol = (rt->ccol + 8) & ~7;
- clamp_cursor_to_bounds(rt);
- break;
-
- case '\x1b': /* begin escape sequence (aborting previous one if any) */
- new_escape_sequence(rt);
- break;
-
- case '\x0e': /* enter graphical character mode */
- rt->pd->graphmode = true;
- break;
-
- case '\x0f': /* exit graphical character mode */
- rt->pd->graphmode = false;
- break;
-
- case '\x9b': /* CSI character. Equivalent to ESC [ */
- new_escape_sequence(rt);
- rt->pd->esbuf[rt->pd->esbuf_len++] = '[';
- break;
-
- case '\x18':
- case '\x1a': /* these interrupt escape sequences */
- cancel_escape_sequence(rt);
- break;
-
- case '\a': /* bell */
- /* do nothing for now... maybe a visual bell would be nice? */
- break;
- }
-}
-
-static inline bool is_valid_csi_ender(int c)
-{
- return (c >= 'a' && c <= 'z')
- || (c >= 'A' && c <= 'Z')
- || (c == '@' || c == '`');
-}
-
-static void try_interpret_escape_seq(RoteTerm *rt)
-{
- char firstchar = rt->pd->esbuf[0];
- char lastchar = rt->pd->esbuf[rt->pd->esbuf_len-1];
-
- if (!firstchar)
- return; /* too early to do anything */
-
- /* interpret ESC-M as reverse line-feed */
- if (firstchar == 'M') {
- cursor_line_up(rt);
- cancel_escape_sequence(rt);
- return;
- }
-
- if (firstchar != '[' && firstchar != ']') {
- /* unrecognized escape sequence. Let's forget about it. */
- cancel_escape_sequence(rt);
- return;
- }
-
- if (firstchar == '[' && is_valid_csi_ender(lastchar)) {
- /* we have a csi escape sequence: interpret it */
- rote_es_interpret_csi(rt);
- cancel_escape_sequence(rt);
- } else if (firstchar == ']' && lastchar == '\a') {
- /* we have an xterm escape sequence: interpret it */
-
- /* rote_es_interpret_xterm_es(rt); -- TODO!*/
- cancel_escape_sequence(rt);
- }
-
- /* if the escape sequence took up all available space and could
- * not yet be parsed, abort it */
- if (rt->pd->esbuf_len + 1 >= ESEQ_BUF_SIZE)
- cancel_escape_sequence(rt);
-}
-
-int rote_vt_inject(RoteTerm *rt, const char *data, int len)
-{
- for (; len-- > 0; data++) {
- if ((unsigned char)*data <= 31) {
- handle_control_char(rt, *data);
- continue;
- }
-
- if (rt->pd->escaped && rt->pd->esbuf_len < ESEQ_BUF_SIZE) {
- /* append character to ongoing escape sequence */
- rt->pd->esbuf[rt->pd->esbuf_len] = *data;
- rt->pd->esbuf[++rt->pd->esbuf_len] = 0;
-
- try_interpret_escape_seq(rt);
- } else
- if (rt->pd->graphmode) {
- put_graphmode_char(rt, *data);
- } else {
- put_normal_char(rt, *data);
- }
- }
-
- return 0;
-}
-
-/****************************************************************************/
-/* CSI things */
-/****************************************************************************/
-
-/* interprets a 'set attribute' (SGR) CSI escape sequence */
-static void interpret_csi_SGR(RoteTerm *rt, int param[], int pcount)
-{
- int i;
-
- if (pcount == 0) {
- /* special case: reset attributes */
- rt->curattr = 0x70;
- return;
- }
-
- for (i = 0; i < pcount; i++) {
-
- // From http://vt100.net/docs/vt510-rm/SGR table 5-16
- // 0 All attributes off
- // 1 Bold
- // 4 Underline
- // 5 Blinking
- // 7 Negative image
- // 8 Invisible image
- // 10 The ASCII character set is the current 7-bit
- // display character set (default) - SCO Console only.
- // 11 Map Hex 00-7F of the PC character set codes
- // to the current 7-bit display character set
- // - SCO Console only.
- // 12 Map Hex 80-FF of the current character set to
- // the current 7-bit display character set - SCO
- // Console only.
- // 22 Bold off
- // 24 Underline off
- // 25 Blinking off
- // 27 Negative image off
- // 28 Invisible image off
-
- if (param[i] == 0) rt->curattr = 0x70;
- else if (param[i] == 1 || param[i] == 2 || param[i] == 4) /* set bold */
- ROTE_ATTR_MOD_BOLD(rt->curattr,1);
- else if (param[i] == 5) /* set blink */
- ROTE_ATTR_MOD_BLINK(rt->curattr,1);
- else if (param[i] == 7 || param[i] == 27) { /* reverse video */
- int fg = ROTE_ATTR_FG(rt->curattr);
- int bg = ROTE_ATTR_BG(rt->curattr);
- ROTE_ATTR_MOD_FG(rt->curattr, bg);
- ROTE_ATTR_MOD_BG(rt->curattr, fg);
- }
- else if (param[i] == 8) rt->curattr = 0x0; /* invisible */
- else if (param[i] == 22 || param[i] == 24) /* bold off */
- ROTE_ATTR_MOD_BOLD(rt->curattr,0);
- else if (param[i] == 25) /* blink off */
- ROTE_ATTR_MOD_BLINK(rt->curattr,0);
- else if (param[i] == 28) /* invisible off */
- rt->curattr = 0x70;
- else if (param[i] >= 30 && param[i] <= 37) /* set fg */
- ROTE_ATTR_MOD_FG(rt->curattr, param[i] - 30);
- else if (param[i] >= 40 && param[i] <= 47) /* set bg */
- ROTE_ATTR_MOD_BG(rt->curattr, param[i] - 40);
- else if (param[i] == 39) /* reset foreground to default */
- ROTE_ATTR_MOD_FG(rt->curattr, 7);
- else if (param[i] == 49) /* reset background to default */
- ROTE_ATTR_MOD_BG(rt->curattr, 0);
- }
-}
-
-/* interprets an 'erase display' (ED) escape sequence */
-static void interpret_csi_ED(RoteTerm *rt, int param[], int pcount)
-{
- int r, c;
- int start_row, start_col, end_row, end_col;
-
- /* decide range */
- if (pcount && param[0] == 2) {
- start_row = 0;
- start_col = 0;
- end_row = rt->rows - 1;
- end_col = rt->cols - 1;
- } else
- if (pcount && param[0] == 1) {
- start_row = 0;
- start_col = 0;
- end_row = rt->crow;
- end_col = rt->ccol;
- } else {
- start_row = rt->crow;
- start_col = rt->ccol;
- end_row = rt->rows - 1;
- end_col = rt->cols - 1;
- }
-
- /* clean range */
- for (r = start_row; r <= end_row; r++) {
- rt->line_dirty[r] = true;
-
- for (c = (r == start_row ? start_col : 0);
- c <= (r == end_row ? end_col : rt->cols - 1);
- c++)
- {
- rt->cells[r][c].ch = 0x20;
- rt->cells[r][c].attr = rt->curattr;
- }
- }
-}
-
-/* interprets a 'move cursor' (CUP) escape sequence */
-static void interpret_csi_CUP(RoteTerm *rt, int param[], int pcount)
-{
- if (pcount == 0) {
- /* special case */
- rt->crow = rt->ccol = 0;
- return;
- } else
- if (pcount < 2) {
- return; /* malformed */
- }
-
- rt->crow = param[0] - 1; /* convert from 1-based to 0-based */
- rt->ccol = param[1] - 1; /* convert from 1-based to 0-based */
-
- rt->curpos_dirty = true;
-
- clamp_cursor_to_bounds(rt);
-}
-
-/* Interpret the 'relative mode' sequences: CUU, CUD, CUF, CUB, CNL,
- * CPL, CHA, HPR, VPA, VPR, HPA */
-static void interpret_csi_C(RoteTerm *rt, char verb, int param[], int pcount)
-{
- int n = (pcount && param[0] > 0) ? param[0] : 1;
-
- switch (verb) {
- case 'A': rt->crow -= n; break;
- case 'B': case 'e': rt->crow += n; break;
- case 'C': case 'a': rt->ccol += n; break;
- case 'D': rt->ccol -= n; break;
- case 'E': rt->crow += n; rt->ccol = 0; break;
- case 'F': rt->crow -= n; rt->ccol = 0; break;
- case 'G': case '`': rt->ccol = param[0] - 1; break;
- case 'd': rt->crow = param[0] - 1; break;
- }
-
- rt->curpos_dirty = true;
- clamp_cursor_to_bounds(rt);
-}
-
-/* Interpret the 'erase line' escape sequence */
-static void interpret_csi_EL(RoteTerm *rt, int param[], int pcount)
-{
- int erase_start, erase_end, i;
- int cmd = pcount ? param[0] : 0;
-
- switch (cmd) {
- case 1: erase_start = 0; erase_end = rt->ccol; break;
- case 2: erase_start = 0; erase_end = rt->cols - 1; break;
- default: erase_start = rt->ccol; erase_end = rt->cols - 1; break;
- }
-
- for (i = erase_start; i <= erase_end; i++) {
- rt->cells[rt->crow][i].ch = 0x20;
- rt->cells[rt->crow][i].attr = rt->curattr;
- }
-
- rt->line_dirty[rt->crow] = true;
-}
-
-/* Interpret the 'insert blanks' sequence (ICH) */
-static void interpret_csi_ICH(RoteTerm *rt, int param[], int pcount)
-{
- int n = (pcount && param[0] > 0) ? param[0] : 1;
- int i;
-
- for (i = rt->cols - 1; i >= rt->ccol + n; i--) {
- rt->cells[rt->crow][i] = rt->cells[rt->crow][i - n];
- }
-
- for (i = rt->ccol; i < rt->ccol + n; i++) {
- rt->cells[rt->crow][i].ch = 0x20;
- rt->cells[rt->crow][i].attr = rt->curattr;
- }
-
- rt->line_dirty[rt->crow] = true;
-}
-
-/* Interpret the 'delete chars' sequence (DCH) */
-static void interpret_csi_DCH(RoteTerm *rt, int param[], int pcount)
-{
- int n = (pcount && param[0] > 0) ? param[0] : 1;
- int i;
-
- for (i = rt->ccol; i < rt->cols; i++) {
- if (i + n < rt->cols) {
- rt->cells[rt->crow][i] = rt->cells[rt->crow][i + n];
- } else {
- rt->cells[rt->crow][i].ch = 0x20;
- rt->cells[rt->crow][i].attr = rt->curattr;
- }
- }
-
- rt->line_dirty[rt->crow] = true;
-}
-
-/* Interpret an 'insert line' sequence (IL) */
-static void interpret_csi_IL(RoteTerm *rt, int param[], int pcount)
-{
- int n = (pcount && param[0] > 0) ? param[0] : 1;
- int i, j;
-
- for (i = rt->pd->scrollbottom; i >= rt->crow + n; i--) {
- memcpy(rt->cells[i], rt->cells[i - n], sizeof(RoteCell) * rt->cols);
- }
-
- for (i = rt->crow; i < rt->crow + n && i <= rt->pd->scrollbottom; i++) {
- rt->line_dirty[i] = true;
- for (j = 0; j < rt->cols; j++) {
- rt->cells[i][j].ch = 0x20;
- rt->cells[i][j].attr = rt->curattr;
- }
- }
-
-}
-
-/* Interpret a 'delete line' sequence (DL) */
-static void interpret_csi_DL(RoteTerm *rt, int param[], int pcount)
-{
- int n = (pcount && param[0] > 0) ? param[0] : 1;
- int i, j;
-
- for (i = rt->crow; i <= rt->pd->scrollbottom; i++) {
- rt->line_dirty[i] = true;
- if (i + n <= rt->pd->scrollbottom) {
- memcpy(rt->cells[i], rt->cells[i+n], sizeof(RoteCell) * rt->cols);
- } else {
- for (j = 0; j < rt->cols; j++) {
- rt->cells[i][j].ch = 0x20;
- rt->cells[i][j].attr = rt->curattr;
- }
- }
- }
-}
-
-/* Interpret an 'erase characters' (ECH) sequence */
-static void interpret_csi_ECH(RoteTerm *rt, int param[], int pcount)
-{
- int n = (pcount && param[0] > 0) ? param[0] : 1;
- int i;
-
- for (i = rt->ccol; i < rt->ccol + n && i < rt->cols; i++) {
- rt->cells[rt->crow][i].ch = 0x20;
- rt->cells[rt->crow][i].attr = rt->curattr;
- }
-
- rt->line_dirty[rt->crow] = true;
-}
-
-/* Interpret a 'set scrolling region' (DECSTBM) sequence */
-static void interpret_csi_DECSTBM(RoteTerm *rt, int param[], int pcount)
-{
- int newtop, newbottom;
-
- if (!pcount) {
- newtop = 0;
- newbottom = rt->rows - 1;
- } else
- if (pcount < 2) {
- return; /* malformed */
- }
-
- newtop = param[0] - 1;
- newbottom = param[1] - 1;
-
- /* clamp to bounds */
- if (newtop < 0)
- newtop = 0;
- if (newtop >= rt->rows)
- newtop = rt->rows - 1;
- if (newbottom < 0)
- newbottom = 0;
- if (newbottom >= rt->rows)
- newbottom = rt->rows - 1;
-
- /* check for range validity */
- if (newtop > newbottom)
- return;
- rt->pd->scrolltop = newtop;
- rt->pd->scrollbottom = newbottom;
-}
-
-static void
-interpret_csi_SAVECUR(RoteTerm *rt,
- int param[] __attribute__((unused)),
- int pcount __attribute__((unused)))
-{
- rt->pd->saved_x = rt->ccol;
- rt->pd->saved_y = rt->crow;
-}
-
-static void
-interpret_csi_RESTORECUR(RoteTerm *rt,
- int param[] __attribute__((unused)),
- int pcount __attribute__((unused)))
-{
- rt->ccol = rt->pd->saved_x;
- rt->crow = rt->pd->saved_y;
- rt->curpos_dirty = true;
-}
-
-void rote_es_interpret_csi(RoteTerm *rt)
-{
- static int csiparam[MAX_CSI_ES_PARAMS];
- int param_count = 0;
- const char *p = rt->pd->esbuf + 1;
- char verb = rt->pd->esbuf[rt->pd->esbuf_len - 1];
-
- if (!strncmp(rt->pd->esbuf, "[?", 2)) { /* private-mode CSI, ignore */
- return;
- }
-
- /* parse numeric parameters */
- while (isdigit((unsigned char)*p) || *p == ';') {
- if (*p == ';') {
- if (param_count >= MAX_CSI_ES_PARAMS) return; /* too long! */
- csiparam[param_count++] = 0;
- } else {
- if (param_count == 0) csiparam[param_count++] = 0;
- csiparam[param_count - 1] *= 10;
- csiparam[param_count - 1] += *p - '0';
- }
-
- p++;
- }
-
- /* delegate handling depending on command character (verb) */
- switch (verb) {
- case 'h':
- if (param_count == 1 && csiparam[0] == 4) /* insert mode */
- rt->insert = true;
- break;
- case 'l':
- if (param_count == 1 && csiparam[0] == 4) /* replace mode */
- rt->insert = false;
- break;
- case 'm': /* it's a 'set attribute' sequence */
- interpret_csi_SGR(rt, csiparam, param_count); break;
- case 'J': /* it's an 'erase display' sequence */
- interpret_csi_ED(rt, csiparam, param_count); break;
- case 'H': case 'f': /* it's a 'move cursor' sequence */
- interpret_csi_CUP(rt, csiparam, param_count); break;
- case 'A': case 'B': case 'C': case 'D': case 'E': case 'F': case 'G':
- case 'e': case 'a': case 'd': case '`':
- /* it is a 'relative move' */
- interpret_csi_C(rt, verb, csiparam, param_count); break;
- case 'K': /* erase line */
- interpret_csi_EL(rt, csiparam, param_count); break;
- case '@': /* insert characters */
- interpret_csi_ICH(rt, csiparam, param_count); break;
- case 'P': /* delete characters */
- interpret_csi_DCH(rt, csiparam, param_count); break;
- case 'L': /* insert lines */
- interpret_csi_IL(rt, csiparam, param_count); break;
- case 'M': /* delete lines */
- interpret_csi_DL(rt, csiparam, param_count); break;
- case 'X': /* erase chars */
- interpret_csi_ECH(rt, csiparam, param_count); break;
- case 'r': /* set scrolling region */
- interpret_csi_DECSTBM(rt, csiparam, param_count); break;
- case 's': /* save cursor location */
- interpret_csi_SAVECUR(rt, csiparam, param_count); break;
- case 'u': /* restore cursor location */
- interpret_csi_RESTORECUR(rt, csiparam, param_count); break;
- default:
- break;
- }
-}
-
projects / apps / madtty.git / blobdiff