+++ /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 <stdlib.h>
-#include <string.h>
-#include <stdio.h>
-
-#include "inject_csi.h"
-#include "roteprivate.h"
-
-#define MAX_CSI_ES_PARAMS 32
-
-/* 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 */
- else {
- 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[], int pcount)
-{
- rt->pd->saved_x = rt->ccol;
- rt->pd->saved_y = rt->crow;
-}
-
-static void interpret_csi_RESTORECUR(RoteTerm *rt, int param[], int pcount)
-{
- 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 */
-#ifdef DEBUG
- fprintf(stderr, "Ignoring private-mode CSI: <%s>\n", rt->pd->esbuf);
-#endif
- return;
- }
-
- /* parse numeric parameters */
- while ((*p >= '0' && *p <= '9') || *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:
-#ifdef DEBUG
- fprintf(stderr, "Unrecogized CSI: verb=%c <%s>\n",
- verb, rt->pd->esbuf);
-#endif
- break;
- }
-}
-
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