X-Git-Url: http://git.madism.org/?a=blobdiff_plain;f=madtty%2Frote.c;fp=madtty%2Frote.c;h=0000000000000000000000000000000000000000;hb=7bbe8b9e43d79660594f369b25a1640799e9612d;hp=83dd331d3343e9ad72ebf40822d0f30cfcd19e81;hpb=7e70c122b103e1bb8f4ec1f641249e2b42dc034f;p=apps%2Fmadtty.git diff --git a/madtty/rote.c b/madtty/rote.c deleted file mode 100644 index 83dd331..0000000 --- a/madtty/rote.c +++ /dev/null @@ -1,261 +0,0 @@ -/* - 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 -#ifdef USE_PTY -#include -#endif -#include -#include - -#include "madtty.h" -#include "roteprivate.h" - -#define ROTE_VT_UPDATE_ITERATIONS 5 - -RoteTerm *rote_vt_create(int rows, int cols) { - RoteTerm *rt; - int i, j; - - if (rows <= 0 || cols <= 0) return NULL; - - if (! (rt = (RoteTerm*) malloc(sizeof(RoteTerm))) ) return NULL; - memset(rt, 0, sizeof(RoteTerm)); - - /* record dimensions */ - rt->rows = rows; - rt->cols = cols; - - /* default mode is replace */ - rt->insert = false; - - /* 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); - - /* 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 */ - } - } - - /* allocate dirtiness array */ - rt->line_dirty = (bool*) malloc(sizeof(bool) * rt->rows); - - /* initialization of other public fields */ - rt->crow = rt->ccol = 0; - rt->curattr = 0x70; /* white text over black background */ - - /* allocate private data */ - rt->pd = (RoteTermPrivate*) malloc(sizeof(RoteTermPrivate)); - memset(rt->pd, 0, sizeof(RoteTermPrivate)); - - rt->pd->pty = -1; /* no pty for now */ - - /* initial scrolling area is the whole window */ - rt->pd->scrolltop = 0; - rt->pd->scrollbottom = rt->rows - 1; - - #ifdef DEBUG - fprintf(stderr, "Created a %d x %d terminal.\n", rt->rows, rt->cols); - #endif - - return rt; -} - -void rote_vt_destroy(RoteTerm *rt) { - int i; - if (!rt) return; - - free(rt->pd); - free(rt->line_dirty); - for (i = 0; i < rt->rows; i++) free(rt->cells[i]); - free(rt->cells); - free(rt); -} - -#ifdef USE_NCURSES - -static void default_cur_set_attr(WINDOW *win, unsigned char attr) { - int cp = ROTE_ATTR_BG(attr) * 8 + 7 - ROTE_ATTR_FG(attr); - if (!cp) wattrset(win, A_NORMAL); - else wattrset(win, COLOR_PAIR(cp)); - - if (ROTE_ATTR_BOLD(attr)) wattron(win, A_BOLD); - if (ROTE_ATTR_BLINK(attr)) wattron(win, A_BLINK); -} - -#endif - -static inline unsigned char ensure_printable(unsigned char ch) - { return ch >= 32 ? ch : 32; } - -#ifdef USE_NCURSES - -void rote_vt_draw(RoteTerm *rt, WINDOW *win, int srow, int scol, - void (*cur_set_attr)(WINDOW*,unsigned char)) { - - int i, j; - rote_vt_update(rt); - - if (!cur_set_attr) cur_set_attr = default_cur_set_attr; - 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)); - } - } - - wmove(win, srow + rt->crow, scol + rt->ccol); -} - -#endif - -#ifdef USE_PTY - -pid_t rote_vt_forkpty(RoteTerm *rt, const char *command) { - struct winsize ws; - pid_t childpid; - - ws.ws_row = rt->rows; - ws.ws_col = rt->cols; - ws.ws_xpixel = ws.ws_ypixel = 0; - - childpid = forkpty(&rt->pd->pty, NULL, NULL, &ws); - if (childpid < 0) return -1; - - if (childpid == 0) { - /* we are the child, running under the slave side of the pty. */ - - /* Cajole application into using linux-console-compatible escape - * sequences (which is what we are prepared to interpret) */ - setenv("TERM", "linux", 1); - - /* Now we will exec /bin/sh -c command. */ - execl("/bin/sh", "/bin/sh", "-c", command, NULL); - - fprintf(stderr, "\nexecl() failed.\nCommand: '%s'\n", command); - exit(127); /* error exec'ing */ - } - - /* if we got here we are the parent process */ - rt->childpid = childpid; - return childpid; -} - -void rote_vt_forsake_child(RoteTerm *rt) { - if (rt->pd->pty >= 0) close(rt->pd->pty); - rt->pd->pty = -1; - rt->childpid = 0; -} - -#endif - -void rote_vt_update(RoteTerm *rt) { - fd_set ifs; - struct timeval tvzero; - char buf[512]; - int bytesread; - int n = ROTE_VT_UPDATE_ITERATIONS; - if (rt->pd->pty < 0) return; /* nothing to pump */ - - while (n--) { /* iterate at most ROVE_VT_UPDATE_ITERATIONS times. - * As Phil Endecott pointed out, if we don't restrict this, - * a program that floods the terminal with output - * could cause this loop to iterate forever, never - * being able to catch up. So we'll rely on the client - * calling rote_vt_update often, as the documentation - * recommends :-) */ - - /* check if pty has something to say */ - FD_ZERO(&ifs); FD_SET(rt->pd->pty, &ifs); - tvzero.tv_sec = 0; tvzero.tv_usec = 0; - - if (select(rt->pd->pty + 1, &ifs, NULL, NULL, &tvzero) <= 0) - return; /* nothing to read, or select() failed */ - - /* read what we can. This is guaranteed not to block, since - * select() told us there was something to read. */ - bytesread = read(rt->pd->pty, buf, 512); - if (bytesread <= 0) return; - - /* inject the data into the terminal */ - rote_vt_inject(rt, buf, bytesread); - } -} - -void rote_vt_write(RoteTerm *rt, const char *data, int len) { - if (rt->pd->pty < 0) { - /* no pty, so just inject the data plain and simple */ - rote_vt_inject(rt, data, len); - return; - } - - /* write data to pty. Keep calling write() until we have written - * everything. */ - while (len > 0) { - int byteswritten = write(rt->pd->pty, data, len); - if (byteswritten < 0) { - /* very ugly way to inform the error. Improvements welcome! */ - static char errormsg[] = "\n(ROTE: pty write() error)\n"; - rote_vt_inject(rt, errormsg, strlen(errormsg)); - return; - } - - data += byteswritten; - len -= byteswritten; - } -} - -void rote_vt_install_handler(RoteTerm *rt, rote_es_handler_t handler) { - rt->pd->handler = handler; -} - -void *rote_vt_take_snapshot(RoteTerm *rt) { - int i; - int bytes_per_row = sizeof(RoteCell) * rt->cols; - void *buf = malloc(bytes_per_row * rt->rows); - void *ptr = buf; - - for (i = 0; i < rt->rows; i++, ptr += bytes_per_row) - memcpy(ptr, rt->cells[i], bytes_per_row); - - return buf; -} - -void rote_vt_restore_snapshot(RoteTerm *rt, void *snapbuf) { - int i; - int bytes_per_row = sizeof(RoteCell) * rt->cols; - - for (i = 0; i < rt->rows; i++, snapbuf += bytes_per_row) { - rt->line_dirty[i] = true; - memcpy(rt->cells[i], snapbuf, bytes_per_row); - } -} - -int rote_vt_get_pty_fd(RoteTerm *rt) { - return rt->pd->pty; -} -