Copyright © 2006 Pierre Habouzit
*/
+#include <ctype.h>
#include <errno.h>
-#include <stdlib.h>
#include <fcntl.h>
+#include <locale.h>
+#include <pty.h>
#include <stdio.h>
+#include <stdlib.h>
#include <string.h>
#include <sys/ioctl.h>
#include "madtty.h"
-#include "madtty_priv.h"
-RoteTerm *rote_vt_create(int rows, int cols)
+static char const * const keytable[KEY_MAX+1] = {
+ ['\n'] = "\r",
+ [KEY_UP] = "\e[A",
+ [KEY_DOWN] = "\e[B",
+ [KEY_RIGHT] = "\e[C",
+ [KEY_LEFT] = "\e[D",
+ [KEY_BACKSPACE] = "\b",
+ [KEY_HOME] = "\e[1~",
+ [KEY_IC] = "\e[2~",
+ [KEY_DC] = "\e[3~",
+ [KEY_END] = "\e[4~",
+ [KEY_PPAGE] = "\e[5~",
+ [KEY_NPAGE] = "\e[6~",
+ [KEY_SUSPEND] = "\x1A", /* Ctrl+Z gets mapped to this */
+ [KEY_F(1)] = "\e[[A",
+ [KEY_F(2)] = "\e[[B",
+ [KEY_F(3)] = "\e[[C",
+ [KEY_F(4)] = "\e[[D",
+ [KEY_F(5)] = "\e[[E",
+ [KEY_F(6)] = "\e[17~",
+ [KEY_F(7)] = "\e[18~",
+ [KEY_F(8)] = "\e[19~",
+ [KEY_F(9)] = "\e[20~",
+ [KEY_F(10)] = "\e[21~",
+};
+
+static void mtty_row_set(mtty_row_t *row, int start, int len, uint16_t attr)
{
- RoteTerm *rt;
- int i, j;
-
- if (rows <= 0 || cols <= 0)
- return NULL;
+ wmemset(row->text + start, 0, len);
+ for (int i = start; i < len + start; i++) {
+ row->attr[i] = attr;
+ }
+}
- rt = (RoteTerm*)calloc(sizeof(RoteTerm), 1);
- if (!rt)
- return NULL;
+__attribute__((noinline))
+static void mtty_row_roll(mtty_row_t *start, mtty_row_t *end, int count)
+{
+ int n = end - start;
- /* record dimensions */
- rt->rows = rows;
- rt->cols = cols;
+ count %= n;
+ if (count < 0)
+ count += n;
- /* default mode is replace */
- rt->insert = false;
+ if (count) {
+ mtty_row_t *buf = alloca(count * sizeof(mtty_row_t));
- /* create the cell matrix */
- rt->cells = (RoteCell**) malloc(sizeof(RoteCell*) * rt->rows);
- for (i = 0; i < rt->rows; i++) {
- /* create row */
- rt->cells[i] = (RoteCell*) malloc(sizeof(RoteCell) * rt->cols);
+ memcpy(buf, start, count * sizeof(mtty_row_t));
+ memmove(start, start + count, (n - count) * sizeof(mtty_row_t));
+ memcpy(end - count, buf, count * sizeof(mtty_row_t));
+ }
+}
- /* fill row with spaces */
- for (j = 0; j < rt->cols; j++) {
- rt->cells[i][j].ch = 0x20; /* a space */
- rt->cells[i][j].attr = 0x70; /* white text, black background */
- }
+static void clamp_cursor_to_bounds(madtty_t *rt)
+{
+ if (rt->curs_row < rt->lines) {
+ rt->curs_row = rt->lines;
+ }
+ if (rt->curs_row >= rt->lines + rt->rows) {
+ rt->curs_row = rt->lines + rt->rows - 1;
}
- /* allocate dirtiness array */
- rt->line_dirty = (bool*)calloc(sizeof(bool), rt->rows);
+ if (rt->curs_col < 0) {
+ rt->curs_col = 0;
+ }
+ if (rt->curs_col >= rt->cols) {
+ rt->curs_col = rt->cols - 1;
+ }
+}
- /* initialization of other public fields */
- rt->crow = rt->ccol = 0;
- rt->curattr = 0x70; /* white text over black background */
+static void cursor_line_down(madtty_t *rt)
+{
+ rt->curs_row++;
+ if (rt->curs_row < rt->scroll_bot)
+ return;
- /* allocate private data */
- rt->pd = (RoteTermPrivate*)calloc(sizeof(RoteTermPrivate), 1);
+ rt->curs_row = rt->scroll_bot - 1;
+ mtty_row_roll(rt->scroll_top, rt->scroll_bot, 1);
+ mtty_row_set(rt->curs_row, 0, rt->cols, 0);
+}
- rt->pty = -1; /* no pty for now */
+static void cursor_line_up(madtty_t *rt)
+{
+ rt->curs_row--;
+ if (rt->curs_row >= rt->scroll_top)
+ return;
- /* initial scrolling area is the whole window */
- rt->pd->scrolltop = 0;
- rt->pd->scrollbottom = rt->rows - 1;
+ /* must scroll the scrolling region up by 1 line, and put cursor on
+ * first line of it */
+ rt->curs_row = rt->scroll_top;
+ mtty_row_roll(rt->scroll_top, rt->scroll_bot, -1);
+ mtty_row_set(rt->curs_row, 0, rt->cols, 0);
+}
- return rt;
+static uint16_t build_attrs(unsigned curattrs)
+{
+ return ((curattrs & ~A_COLOR) | COLOR_PAIR(curattrs & 0xff))
+ >> NCURSES_ATTR_SHIFT;
}
-void rote_vt_destroy(RoteTerm *rt)
+static void put_normal_char(madtty_t *rt, wchar_t c)
{
- int i;
- if (!rt)
- return;
+ mtty_row_t *tmp;
- free(rt->pd);
- free(rt->line_dirty);
- for (i = 0; i < rt->rows; i++) {
- free(rt->cells[i]);
+ if (rt->curs_col >= rt->cols) {
+ rt->curs_col = 0;
+ cursor_line_down(rt);
}
- free(rt->cells);
- free(rt);
+
+ tmp = rt->curs_row;
+
+ if (rt->insert) {
+ wmemmove(tmp->text + rt->curs_col + 1, tmp->text + rt->curs_col,
+ (rt->cols - rt->curs_col - 1));
+ memmove(tmp->attr + rt->curs_col + 1, tmp->attr + rt->curs_col,
+ (rt->cols - rt->curs_col - 1) * sizeof(tmp->attr[0]));
+ }
+
+ tmp->text[rt->curs_col] = c;
+ tmp->attr[rt->curs_col] = build_attrs(rt->curattrs);
+ rt->curs_col++;
}
-#ifdef USE_NCURSES
+static void put_graphmode_char(madtty_t *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 = '%';
+ }
-static void default_cur_set_attr(WINDOW *win, unsigned char attr)
+ put_normal_char(rt, nc);
+}
+
+static void new_escape_sequence(madtty_t *rt)
{
- int cp = ROTE_ATTR_BG(attr) * 8 + 7 - ROTE_ATTR_FG(attr);
- if (!cp) wattrset(win, A_NORMAL);
- else wattrset(win, COLOR_PAIR(cp));
+ rt->escaped = true;
+ rt->esbuf_len = 0;
+ rt->esbuf[0] = '\0';
+}
- if (ROTE_ATTR_BOLD(attr)) wattron(win, A_BOLD);
- if (ROTE_ATTR_BLINK(attr)) wattron(win, A_BLINK);
+static void cancel_escape_sequence(madtty_t *rt)
+{
+ rt->escaped = false;
+ rt->esbuf_len = 0;
+ rt->esbuf[0] = '\0';
}
-static inline unsigned char ensure_printable(unsigned int ch)
+static void handle_control_char(madtty_t *rt, int c)
{
- return ch >= 32 ? ch : 32;
+ switch (c) {
+ case '\r': /* carriage return */
+ rt->curs_col = 0;
+ break;
+
+ case '\n': /* line feed */
+ rt->curs_col = 0;
+ cursor_line_down(rt);
+ break;
+
+ case '\b': /* backspace */
+ if (rt->curs_col > 0)
+ rt->curs_col--;
+ break;
+
+ case '\t': /* tab */
+ rt->curs_col = (rt->curs_col + 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->graphmode = true;
+ break;
+
+ case '\x0f': /* exit graphical character mode */
+ rt->graphmode = false;
+ break;
+
+ case '\x9b': /* CSI character. Equivalent to ESC [ */
+ new_escape_sequence(rt);
+ rt->esbuf[rt->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;
+ }
}
-void rote_vt_draw(RoteTerm *rt, WINDOW *win, int srow, int scol,
- void (*cur_set_attr)(WINDOW*,unsigned char)) {
+static bool is_valid_csi_ender(int c)
+{
+ return (c >= 'a' && c <= 'z')
+ || (c >= 'A' && c <= 'Z')
+ || (c == '@' || c == '`');
+}
- int i, j;
+/* interprets a 'set attribute' (SGR) CSI escape sequence */
+static void interpret_csi_SGR(madtty_t *rt, int param[], int pcount)
+{
+ int i;
- if (!cur_set_attr)
- cur_set_attr = default_cur_set_attr;
+ if (pcount == 0) {
+ /* special case: reset attributes */
+ rt->curattrs = A_NORMAL;
+ return;
+ }
- for (i = 0; i < rt->rows; i++) {
- wmove(win, srow + i, scol);
- for (j = 0; j < rt->cols; j++) {
- (*cur_set_attr)(win, rt->cells[i][j].attr);
- waddch(win, ensure_printable(rt->cells[i][j].ch));
+ for (i = 0; i < pcount; i++) {
+ switch (param[i]) {
+#define CASE(x, op) case x: op; break
+ CASE(0, rt->curattrs = A_NORMAL);
+ CASE(1, rt->curattrs |= A_BOLD);
+ CASE(4, rt->curattrs |= A_UNDERLINE);
+ CASE(5, rt->curattrs |= A_BLINK);
+ CASE(6, rt->curattrs |= A_BLINK);
+ CASE(7, rt->curattrs |= A_REVERSE);
+ CASE(8, rt->curattrs |= A_INVIS);
+ CASE(22, rt->curattrs &= ~A_BOLD);
+ CASE(24, rt->curattrs &= ~A_UNDERLINE);
+ CASE(25, rt->curattrs &= ~A_BLINK);
+ CASE(27, rt->curattrs &= ~A_REVERSE);
+ CASE(28, rt->curattrs &= ~A_INVIS);
+
+ case 30 ... 37:
+ rt->curattrs &= ~0xf0;
+ rt->curattrs |= (param[i] - 29) << 4;
+ break;
+
+ case 39:
+ rt->curattrs &= ~0xf0;
+ break;
+
+ case 40 ... 47:
+ rt->curattrs &= ~0x0f;
+ rt->curattrs |= (param[i] - 39);
+ break;
+
+ case 49:
+ rt->curattrs &= ~0x0f;
+ break;
+
+ default:
+ break;
}
}
+}
- wmove(win, srow + rt->crow, scol + rt->ccol);
+/* interprets an 'erase display' (ED) escape sequence */
+static void interpret_csi_ED(madtty_t *rt, int param[], int pcount)
+{
+ int r;
+ 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->curs_row - rt->lines;
+ end_col = rt->curs_col;
+ } else {
+ start_row = rt->curs_row - rt->lines;
+ start_col = rt->curs_col;
+ end_row = rt->rows - 1;
+ end_col = rt->cols - 1;
+ }
+
+ /* clean range */
+ mtty_row_set(rt->lines + start_row, start_col, rt->cols - start_col,
+ build_attrs(rt->curattrs));
+ for (r = start_row + 1; r < end_row; r++) {
+ mtty_row_set(rt->lines + r, 0, rt->cols, build_attrs(rt->curattrs));
+ }
+ mtty_row_set(rt->lines + end_row, 0, end_col + 1,
+ build_attrs(rt->curattrs));
}
-#endif
+/* interprets a 'move cursor' (CUP) escape sequence */
+static void interpret_csi_CUP(madtty_t *rt, int param[], int pcount)
+{
+ if (pcount == 0) {
+ /* special case */
+ rt->curs_row = rt->lines;
+ rt->curs_col = 0;
+ return;
+ } else
+ if (pcount < 2) {
+ return; /* malformed */
+ }
-/******************************************************/
+ rt->curs_row = rt->lines + param[0] - 1; /* convert from 1-based to 0-based */
+ rt->curs_col = param[1] - 1; /* convert from 1-based to 0-based */
-#define PTYCHAR1 "pqrstuvwxyz"
-#define PTYCHAR2 "0123456789abcdef"
-
-/* allocate one pty/tty pair */
-static int get_pty(char *tty_str)
-{
- int fd;
- char ptydev[] = "/dev/pty??";
- char ttydev[] = "/dev/tty??";
- int len = strlen(ttydev);
- const char *c1, *c2;
-
- for (c1 = PTYCHAR1; *c1; c1++) {
- ptydev[len-2] = ttydev[len-2] = *c1;
- for (c2 = PTYCHAR2; *c2; c2++) {
- ptydev[len-1] = ttydev[len-1] = *c2;
- if ((fd = open(ptydev, O_RDWR)) >= 0) {
- if (access(ttydev, R_OK|W_OK) == 0) {
- strcpy(tty_str, ttydev);
- return fd;
- }
- close(fd);
- }
- }
- }
- return -1;
-}
-
-static int
-run_process(const char *path, const char **argv, int *fd_ptr, int *pid_ptr)
-{
- int pty_fd, pid, i, nb_fds;
- char tty_name[32];
- struct winsize ws;
+ clamp_cursor_to_bounds(rt);
+}
- pty_fd = get_pty(tty_name);
- if (pty_fd < 0)
- return -1;
+/* Interpret the 'relative mode' sequences: CUU, CUD, CUF, CUB, CNL,
+ * CPL, CHA, HPR, VPA, VPR, HPA */
+static void interpret_csi_C(madtty_t *rt, char verb, int param[], int pcount)
+{
+ int n = (pcount && param[0] > 0) ? param[0] : 1;
+
+ switch (verb) {
+ case 'A': rt->curs_row -= n; break;
+ case 'B': case 'e': rt->curs_row += n; break;
+ case 'C': case 'a': rt->curs_col += n; break;
+ case 'D': rt->curs_col -= n; break;
+ case 'E': rt->curs_row += n; rt->curs_col = 0; break;
+ case 'F': rt->curs_row -= n; rt->curs_col = 0; break;
+ case 'G': case '`': rt->curs_col = param[0] - 1; break;
+ case 'd': rt->curs_row = rt->lines + param[0] - 1; break;
+ }
- fcntl(pty_fd, F_SETFL, O_NONBLOCK);
+ clamp_cursor_to_bounds(rt);
+}
- /* set dummy screen size */
- ws.ws_col = 80;
- ws.ws_row = 25;
- ws.ws_xpixel = ws.ws_col;
- ws.ws_ypixel = ws.ws_row;
- ioctl(pty_fd, TIOCSWINSZ, &ws);
+/* Interpret the 'erase line' escape sequence */
+static void interpret_csi_EL(madtty_t *rt, int param[], int pcount)
+{
+ int start, len;
+ int cmd = pcount ? param[0] : 0;
+
+ switch (cmd) {
+ case 1:
+ start = 0;
+ len = rt->curs_col + 1;
+ break;
+ case 2:
+ start = 0;
+ len = rt->cols;
+ break;
+ default:
+ start = rt->curs_col;
+ len = rt->cols - start;
+ break;
+ }
- pid = fork();
- if (pid < 0)
- return -1;
+ mtty_row_set(rt->curs_row, start, len, build_attrs(rt->curattrs));
+}
- if (pid == 0) {
- /* child process */
- nb_fds = getdtablesize();
- for (i = 0; i < nb_fds; i++)
- close(i);
- /* open pseudo tty for standard i/o */
- open(tty_name, O_RDWR);
- dup(0);
- dup(0);
+/* Interpret the 'insert blanks' sequence (ICH) */
+static void interpret_csi_ICH(madtty_t *rt, int param[], int pcount)
+{
+ mtty_row_t *row = rt->curs_row;
+ int n = (pcount && param[0] > 0) ? param[0] : 1;
+ int i;
- setsid();
+ for (i = rt->cols - 1; i >= rt->curs_col + n; i--) {
+ row->text[i] = row->text[i - n];
+ row->attr[i] = row->attr[i - n];
+ }
- setenv("TERM", "linux", 1);
- execv(path, (char *const*)argv);
- fprintf(stderr, "\nexecv() failed.\nCommand: '%s'\n", argv[0]);
- exit(1);
+ mtty_row_set(row, rt->curs_col, n, build_attrs(rt->curattrs));
+}
+
+/* Interpret the 'delete chars' sequence (DCH) */
+static void interpret_csi_DCH(madtty_t *rt, int param[], int pcount)
+{
+ mtty_row_t *row = rt->curs_row;
+ int n = (pcount && param[0] > 0) ? param[0] : 1;
+ int i;
+
+ for (i = rt->curs_col; i < rt->cols; i++) {
+ if (i + n < rt->cols) {
+ row->text[i] = row->text[i + n];
+ row->attr[i] = row->attr[i + n];
+ } else {
+ row->text[i] = 0;
+ row->attr[i] = build_attrs(rt->curattrs);
+ }
}
- /* return file info */
- *fd_ptr = pty_fd;
- *pid_ptr = pid;
- return 0;
}
-pid_t rote_vt_forkpty(RoteTerm *rt, const char *path, const char *argv[])
+/* Interpret an 'insert line' sequence (IL) */
+static void interpret_csi_IL(madtty_t *rt, int param[], int pcount)
{
- struct winsize ws;
+ int n = (pcount && param[0] > 0) ? param[0] : 1;
- ws.ws_row = rt->rows;
- ws.ws_col = rt->cols;
- ws.ws_xpixel = ws.ws_ypixel = 0;
+ if (rt->curs_row + n >= rt->scroll_bot) {
+ for (mtty_row_t *row = rt->curs_row; row < rt->scroll_bot; row++) {
+ mtty_row_set(row, 0, rt->cols, build_attrs(rt->curattrs));
+ }
+ } else {
+ mtty_row_roll(rt->curs_row, rt->scroll_bot, n);
+ for (mtty_row_t *row = rt->curs_row; row < rt->curs_row + n; row++) {
+ mtty_row_set(row, 0, rt->cols, build_attrs(rt->curattrs));
+ }
+ }
- if (run_process(path, argv, &rt->pty, &rt->childpid)) {
- return -1;
+}
+
+/* Interpret a 'delete line' sequence (DL) */
+static void interpret_csi_DL(madtty_t *rt, int param[], int pcount)
+{
+ int n = (pcount && param[0] > 0) ? param[0] : 1;
+
+ if (rt->curs_row + n >= rt->scroll_bot) {
+ for (mtty_row_t *row = rt->curs_row; row < rt->scroll_bot; row++) {
+ mtty_row_set(row, 0, rt->cols, build_attrs(rt->curattrs));
+ }
+ } else {
+ mtty_row_roll(rt->curs_row, rt->scroll_bot, -n);
+
+ for (mtty_row_t *row = rt->scroll_bot - n; row < rt->scroll_bot; row++) {
+ mtty_row_set(row, 0, rt->cols, build_attrs(rt->curattrs));
+ }
+ }
+}
+
+/* Interpret an 'erase characters' (ECH) sequence */
+static void interpret_csi_ECH(madtty_t *rt, int param[], int pcount)
+{
+ int n = (pcount && param[0] > 0) ? param[0] : 1;
+
+ if (rt->curs_col + n < rt->cols) {
+ n = rt->cols - rt->curs_col;
}
+ mtty_row_set(rt->curs_row, rt->curs_col, n, build_attrs(rt->curattrs));
+}
- ioctl(rt->pty, TIOCSWINSZ, &ws);
- return rt->childpid;
+/* Interpret a 'set scrolling region' (DECSTBM) sequence */
+static void interpret_csi_DECSTBM(madtty_t *rt, int param[], int pcount)
+{
+ int new_top, new_bot;
+
+ switch (pcount) {
+ case 0:
+ rt->scroll_top = rt->lines;
+ rt->scroll_bot = rt->lines + rt->rows;
+ break;
+ default:
+ return; /* malformed */
+
+ case 2:
+ new_top = param[0] - 1;
+ new_bot = param[1] - 1;
+
+ /* clamp to bounds */
+ if (new_top < 0)
+ new_top = 0;
+ if (new_top >= rt->rows)
+ new_top = rt->rows - 1;
+ if (new_bot < 0)
+ new_bot = 0;
+ if (new_bot >= rt->rows)
+ new_bot = rt->rows;
+
+ /* check for range validity */
+ if (new_top < new_bot) {
+ rt->scroll_top = rt->lines + new_top;
+ rt->scroll_bot = rt->lines + new_bot;
+ }
+ break;
+ }
}
-void rote_vt_forsake_child(RoteTerm *rt)
+static void es_interpret_csi(madtty_t *rt)
{
- if (rt->pty >= 0)
- close(rt->pty);
- rt->pty = -1;
- rt->childpid = 0;
+ static int csiparam[MAX_CSI_ES_PARAMS];
+ int param_count = 0;
+ const char *p = rt->esbuf + 1;
+ char verb = rt->esbuf[rt->esbuf_len - 1];
+
+ if (!strncmp(rt->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 */
+ rt->curs_srow = rt->curs_row - rt->lines;
+ rt->curs_scol = rt->curs_col;
+ break;
+ case 'u': /* restore cursor location */
+ rt->curs_row = rt->lines + rt->curs_srow;
+ rt->curs_col = rt->curs_scol;
+ clamp_cursor_to_bounds(rt);
+ break;
+ default:
+ break;
+ }
}
-int rote_vt_read(RoteTerm *rt, char *buf, int buflen)
+static void try_interpret_escape_seq(madtty_t *rt)
{
- if (rt->pty < 0) {
- errno = EINVAL;
- return -1;
+ char firstchar = rt->esbuf[0];
+ char lastchar = rt->esbuf[rt->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;
}
- return read(rt->pty, buf, buflen);
+ if (firstchar != '[' && firstchar != ']') {
+ /* unrecognized escape sequence. Let's forget about it. */
+ cancel_escape_sequence(rt);
+ return;
+ }
+
+ if (firstchar == '[' && is_valid_csi_ender(lastchar)) {
+ es_interpret_csi(rt);
+ cancel_escape_sequence(rt);
+ } else if (firstchar == ']' && lastchar == '\a') {
+ /* we have an xterm escape sequence: interpret it */
+
+ /* 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->esbuf_len + 1 >= ESEQ_BUF_SIZE)
+ cancel_escape_sequence(rt);
}
-int rote_vt_write(RoteTerm *rt, const char *data, int len)
+int madtty_process(madtty_t *rt)
{
- int res;
+ int res, pos = 0;
if (rt->pty < 0) {
errno = EINVAL;
return -1;
}
- again:
- res = write(rt->pty, data, len);
- if (res < 0) {
- if (errno == EINTR || errno == EAGAIN)
- goto again;
+ res = read(rt->pty, rt->rbuf + rt->rbuf_len,
+ sizeof(rt->rbuf) - rt->rbuf_len);
+ if (res < 0)
+ return -1;
+
+ rt->rbuf_len += res;
+ while (pos < rt->rbuf_len) {
+ wchar_t wc;
+ ssize_t len;
+
+ len = (ssize_t)mbrtowc(&wc, rt->rbuf + pos, rt->rbuf_len - pos,
+ &rt->ps);
+ if (len < 0) {
+ rt->rbuf_len -= pos;
+ memmove(rt->rbuf, rt->rbuf + pos, rt->rbuf_len);
+ return len == -2 ? 0 : -1;
+ }
+
+ pos += len ? len : 1;
+
+ if (wc < ' ') {
+ handle_control_char(rt, wc);
+ continue;
+ }
+
+ if (rt->escaped && rt->esbuf_len < ESEQ_BUF_SIZE) {
+ /* append character to ongoing escape sequence */
+ rt->esbuf[rt->esbuf_len] = wc;
+ rt->esbuf[++rt->esbuf_len] = 0;
+
+ try_interpret_escape_seq(rt);
+ } else
+ if (rt->graphmode) {
+ put_graphmode_char(rt, wc);
+ } else {
+ put_normal_char(rt, wc);
+ }
}
- return res;
+ rt->rbuf_len -= pos;
+ memmove(rt->rbuf, rt->rbuf + pos, rt->rbuf_len);
+ return 0;
}
-void *rote_vt_take_snapshot(RoteTerm *rt)
+madtty_t *madtty_create(int rows, int cols)
{
- const int bytes_per_row = sizeof(RoteCell) * rt->cols;
- void *buf = malloc(bytes_per_row * rt->rows);
- void *ptr = buf;
+ madtty_t *rt;
int i;
+ if (rows <= 0 || cols <= 0)
+ return NULL;
+
+ rt = (madtty_t*)calloc(sizeof(madtty_t), 1);
+ if (!rt)
+ return NULL;
+
+ /* record dimensions */
+ rt->rows = rows;
+ rt->cols = cols;
+
+ /* default mode is replace */
+ rt->insert = false;
+
+ /* create the cell matrix */
+ rt->lines = (mtty_row_t*)calloc(sizeof(mtty_row_t), rt->rows);
for (i = 0; i < rt->rows; i++) {
- memcpy(ptr, rt->cells[i], bytes_per_row);
- ptr = (char *)ptr + bytes_per_row;
+ rt->lines[i].text = (wchar_t *)calloc(sizeof(wchar_t), rt->cols);
+ rt->lines[i].attr = (uint16_t *)calloc(sizeof(uint16_t), rt->cols);
}
- return buf;
+ rt->pty = -1; /* no pty for now */
+
+ /* initialization of other public fields */
+ rt->curs_row = rt->lines;
+ rt->curs_col = 0;
+ rt->curattrs = A_NORMAL; /* white text over black background */
+
+ /* initial scrolling area is the whole window */
+ rt->scroll_top = rt->lines;
+ rt->scroll_bot = rt->lines + rt->rows;
+
+ return rt;
}
-void rote_vt_restore_snapshot(RoteTerm *rt, void *snapbuf)
+void madtty_destroy(madtty_t *rt)
{
- const int bytes_per_row = sizeof(RoteCell) * rt->cols;
-
int i;
+ if (!rt)
+ return;
+
+ for (i = 0; i < rt->rows; i++) {
+ free(rt->lines[i].text);
+ free(rt->lines[i].attr);
+ }
+ free(rt->lines);
+ free(rt);
+}
+
+void madtty_draw(madtty_t *rt, WINDOW *win, int srow, int scol)
+{
+ int i, j;
for (i = 0; i < rt->rows; i++) {
- rt->line_dirty[i] = true;
- memcpy(rt->cells[i], snapbuf, bytes_per_row);
- snapbuf = (char *)snapbuf + bytes_per_row;
+ mtty_row_t *row = rt->lines + i;
+ wmove(win, srow + i, scol);
+
+ for (j = 0; j < rt->cols; j++) {
+ if (!j || row->attr[j] != row->attr[j - 1])
+ wattrset(win, (attr_t)row->attr[j] << NCURSES_ATTR_SHIFT);
+ if (row->text[j] >= 128) {
+ char buf[MB_CUR_MAX + 1];
+ int len;
+
+ len = wcrtomb(buf, row->text[j], NULL);
+ waddnstr(win, buf, len);
+ } else {
+ waddch(win, row->text[j] > ' ' ? row->text[j] : ' ');
+ }
+ }
}
+
+ wmove(win, srow + rt->curs_row - rt->lines, scol + rt->curs_col);
}
-static const char *keytable[KEY_MAX+1];
+/******************************************************/
-static void keytable_init()
+pid_t madtty_forkpty(madtty_t *rt, const char *path, const char *argv[])
{
- memset(keytable, 0, KEY_MAX+1 * sizeof(const char*));
+ struct winsize ws;
+ pid_t pid;
- keytable['\n'] = "\r";
- keytable[KEY_UP] = "\e[A";
- keytable[KEY_DOWN] = "\e[B";
- keytable[KEY_RIGHT] = "\e[C";
- keytable[KEY_LEFT] = "\e[D";
- keytable[KEY_BACKSPACE] = "\b";
- keytable[KEY_HOME] = "\e[1~";
- keytable[KEY_IC] = "\e[2~";
- keytable[KEY_DC] = "\e[3~";
- keytable[KEY_END] = "\e[4~";
- keytable[KEY_PPAGE] = "\e[5~";
- keytable[KEY_NPAGE] = "\e[6~";
- keytable[KEY_SUSPEND] = "\x1A"; /* Ctrl+Z gets mapped to this */
- keytable[KEY_F(1)] = "\e[[A";
- keytable[KEY_F(2)] = "\e[[B";
- keytable[KEY_F(3)] = "\e[[C";
- keytable[KEY_F(4)] = "\e[[D";
- keytable[KEY_F(5)] = "\e[[E";
- keytable[KEY_F(6)] = "\e[17~";
- keytable[KEY_F(7)] = "\e[18~";
- keytable[KEY_F(8)] = "\e[19~";
- keytable[KEY_F(9)] = "\e[20~";
- keytable[KEY_F(10)] = "\e[21~";
+ ws.ws_row = rt->rows;
+ ws.ws_col = rt->cols;
+ ws.ws_xpixel = ws.ws_ypixel = 0;
+
+ pid = forkpty(&rt->pty, NULL, NULL, &ws);
+ if (pid < 0)
+ return -1;
+
+ if (pid == 0) {
+ setsid();
+
+ setenv("TERM", "linux", 1);
+ execv(path, (char *const*)argv);
+ fprintf(stderr, "\nexecv() failed.\nCommand: '%s'\n", argv[0]);
+ exit(1);
+ }
+
+ return rt->childpid = pid;
}
-void rote_vt_keypress(RoteTerm *rt, int keycode)
+static int madtty_write(madtty_t *rt, const char *data, int len)
+{
+ int res;
+
+ if (rt->pty < 0) {
+ errno = EINVAL;
+ return -1;
+ }
+
+again:
+ res = write(rt->pty, data, len);
+ if (res < 0) {
+ if (errno == EINTR || errno == EAGAIN)
+ goto again;
+ }
+
+ return res;
+}
+
+void madtty_keypress(madtty_t *rt, int keycode)
{
char c = (char)keycode;
const char *buf;
int len;
- if (keytable['\n'] == NULL)
- keytable_init();
-
if (keycode >= 0 && keycode < KEY_MAX && keytable[keycode]) {
buf = keytable[keycode];
len = strlen(keytable[keycode]);
}
while (len > 0) {
- int res = rote_vt_write(rt, buf, len);
+ int res = madtty_write(rt, buf, len);
if (res < 0)
return;
}
}
+void madtty_initialize(void)
+{
+ setlocale(LC_ALL, "");
+ initscr();
+ noecho();
+ start_color();
+ use_default_colors();
+ raw();
+ nodelay(stdscr, TRUE);
+ keypad(stdscr, TRUE);
+
+ for (int i = -1; i < 8; i++) {
+ for (int j = -1; j < 8; j++) {
+ init_pair((i + 1) * 16 + j + 1, i, j);
+ }
+ }
+}
projects / apps / madtty.git / blobdiff