/* $OpenBSD: cl_term.c,v 1.15 2006/04/22 03:09:15 ray Exp $ */ /*- * Copyright (c) 1993, 1994 * The Regents of the University of California. All rights reserved. * Copyright (c) 1993, 1994, 1995, 1996 * Keith Bostic. All rights reserved. * * See the LICENSE file for redistribution information. */ #include "config.h" #ifndef lint static const char sccsid[] = "@(#)cl_term.c 10.22 (Berkeley) 9/15/96"; #endif /* not lint */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "../common/common.h" #include "cl.h" static int cl_pfmap(SCR *, seq_t, CHAR_T *, size_t, CHAR_T *, size_t); /* * XXX * THIS REQUIRES THAT ALL SCREENS SHARE A TERMINAL TYPE. */ typedef struct _tklist { char *ts; /* Key's termcap string. */ char *output; /* Corresponding vi command. */ char *name; /* Name. */ u_char value; /* Special value (for lookup). */ } TKLIST; static TKLIST const c_tklist[] = { /* Command mappings. */ {"kil1", "O", "insert line"}, {"kdch1", "x", "delete character"}, {"kcud1", "j", "cursor down"}, {"kel", "D", "delete to eol"}, {"kind", "\004", "scroll down"}, /* ^D */ {"kll", "$", "go to eol"}, {"khome", "^", "go to sol"}, {"kich1", "i", "insert at cursor"}, {"kdl1", "dd", "delete line"}, {"kcub1", "h", "cursor left"}, {"knp", "\006", "page down"}, /* ^F */ {"kpp", "\002", "page up"}, /* ^B */ {"kri", "\025", "scroll up"}, /* ^U */ {"ked", "dG", "delete to end of screen"}, {"kcuf1", "l", "cursor right"}, {"kcuu1", "k", "cursor up"}, {NULL}, }; static TKLIST const m1_tklist[] = { /* Input mappings (lookup). */ {NULL}, }; static TKLIST const m2_tklist[] = { /* Input mappings (set or delete). */ {"kcud1", "\033ja", "cursor down"}, /* ^[ja */ {"kcub1", "\033ha", "cursor left"}, /* ^[ha */ {"kcuu1", "\033ka", "cursor up"}, /* ^[ka */ {"kcuf1", "\033la", "cursor right"}, /* ^[la */ {NULL}, }; /* * cl_term_init -- * Initialize the special keys defined by the termcap/terminfo entry. * * PUBLIC: int cl_term_init(SCR *); */ int cl_term_init(sp) SCR *sp; { KEYLIST *kp; SEQ *qp; TKLIST const *tkp; char *t; /* Command mappings. */ for (tkp = c_tklist; tkp->name != NULL; ++tkp) { if ((t = tigetstr(tkp->ts)) == NULL || t == (char *)-1) continue; if (seq_set(sp, tkp->name, strlen(tkp->name), t, strlen(t), tkp->output, strlen(tkp->output), SEQ_COMMAND, SEQ_NOOVERWRITE | SEQ_SCREEN)) return (1); } /* Input mappings needing to be looked up. */ for (tkp = m1_tklist; tkp->name != NULL; ++tkp) { if ((t = tigetstr(tkp->ts)) == NULL || t == (char *)-1) continue; for (kp = keylist;; ++kp) if (kp->value == tkp->value) break; if (kp == NULL) continue; if (seq_set(sp, tkp->name, strlen(tkp->name), t, strlen(t), &kp->ch, 1, SEQ_INPUT, SEQ_NOOVERWRITE | SEQ_SCREEN)) return (1); } /* Input mappings that are already set or are text deletions. */ for (tkp = m2_tklist; tkp->name != NULL; ++tkp) { if ((t = tigetstr(tkp->ts)) == NULL || t == (char *)-1) continue; /* * !!! * Some terminals' keys send single * characters. This is okay in command mapping, but not okay * in input mapping. That combination is the only one we'll * ever see, hopefully, so kluge it here for now. */ if (!strcmp(t, "\b")) continue; if (tkp->output == NULL) { if (seq_set(sp, tkp->name, strlen(tkp->name), t, strlen(t), NULL, 0, SEQ_INPUT, SEQ_NOOVERWRITE | SEQ_SCREEN)) return (1); } else if (seq_set(sp, tkp->name, strlen(tkp->name), t, strlen(t), tkp->output, strlen(tkp->output), SEQ_INPUT, SEQ_NOOVERWRITE | SEQ_SCREEN)) return (1); } /* * Rework any function key mappings that were set before the * screen was initialized. */ LIST_FOREACH(qp, & sp->gp->seqq, q) if (F_ISSET(qp, SEQ_FUNCMAP)) (void)cl_pfmap(sp, qp->stype, qp->input, qp->ilen, qp->output, qp->olen); return (0); } /* * cl_term_end -- * End the special keys defined by the termcap/terminfo entry. * * PUBLIC: int cl_term_end(GS *); */ int cl_term_end(gp) GS *gp; { SEQ *qp, *nqp; /* Delete screen specific mappings. */ for (qp = LIST_FIRST(&gp->seqq); qp != NULL; qp = nqp) { nqp = LIST_NEXT(qp, q); if (F_ISSET(qp, SEQ_SCREEN)) (void)seq_mdel(qp); } return (0); } /* * cl_fmap -- * Map a function key. * * PUBLIC: int cl_fmap(SCR *, seq_t, CHAR_T *, size_t, CHAR_T *, size_t); */ int cl_fmap(sp, stype, from, flen, to, tlen) SCR *sp; seq_t stype; CHAR_T *from, *to; size_t flen, tlen; { /* Ignore until the screen is running, do the real work then. */ if (F_ISSET(sp, SC_VI) && !F_ISSET(sp, SC_SCR_VI)) return (0); if (F_ISSET(sp, SC_EX) && !F_ISSET(sp, SC_SCR_EX)) return (0); return (cl_pfmap(sp, stype, from, flen, to, tlen)); } /* * cl_pfmap -- * Map a function key (private version). */ static int cl_pfmap(sp, stype, from, flen, to, tlen) SCR *sp; seq_t stype; CHAR_T *from, *to; size_t flen, tlen; { size_t nlen; char *p, key_name[64]; (void)snprintf(key_name, sizeof(key_name), "kf%d", atoi(from + 1)); if ((p = tigetstr(key_name)) == NULL || p == (char *)-1 || strlen(p) == 0) p = NULL; if (p == NULL) { msgq_str(sp, M_ERR, from, "233|This terminal has no %s key"); return (1); } nlen = snprintf(key_name, sizeof(key_name), "function key %d", atoi(from + 1)); if (nlen >= sizeof(key_name)) nlen = sizeof(key_name) - 1; return (seq_set(sp, key_name, nlen, p, strlen(p), to, tlen, stype, SEQ_NOOVERWRITE | SEQ_SCREEN)); } /* * cl_optchange -- * Curses screen specific "option changed" routine. * * PUBLIC: int cl_optchange(SCR *, int, char *, u_long *); */ int cl_optchange(sp, opt, str, valp) SCR *sp; int opt; char *str; u_long *valp; { CL_PRIVATE *clp; clp = CLP(sp); switch (opt) { case O_COLUMNS: case O_LINES: case O_TERM: /* * Changing the columns, lines or terminal require that * we restart the screen. */ F_SET(sp->gp, G_SRESTART); F_CLR(sp, SC_SCR_EX | SC_SCR_VI); break; case O_MESG: (void)cl_omesg(sp, clp, !*valp); break; case O_WINDOWNAME: if (*valp) { F_CLR(clp, CL_RENAME_OK); (void)cl_rename(sp, NULL, 0); } else { F_SET(clp, CL_RENAME_OK); /* * If the screen is live, i.e. we're not reading the * .exrc file, update the window. */ if (sp->frp != NULL && sp->frp->name != NULL) (void)cl_rename(sp, sp->frp->name, 1); } break; } return (0); } /* * cl_omesg -- * Turn the tty write permission on or off. * * PUBLIC: int cl_omesg(SCR *, CL_PRIVATE *, int); */ int cl_omesg(sp, clp, on) SCR *sp; CL_PRIVATE *clp; int on; { struct stat sb; char *tty; /* Find the tty, get the current permissions. */ if ((tty = ttyname(STDERR_FILENO)) == NULL) { if (sp != NULL) msgq(sp, M_SYSERR, "stderr"); return (1); } if (stat(tty, &sb) < 0) { if (sp != NULL) msgq(sp, M_SYSERR, "%s", tty); return (1); } /* Save the original status if it's unknown. */ if (clp->tgw == TGW_UNKNOWN) clp->tgw = sb.st_mode & S_IWGRP ? TGW_SET : TGW_UNSET; /* Toggle the permissions. */ if (on) { if (chmod(tty, sb.st_mode | S_IWGRP) < 0) { if (sp != NULL) msgq(sp, M_SYSERR, "046|messages not turned on: %s", tty); return (1); } } else if (chmod(tty, sb.st_mode & ~S_IWGRP) < 0) { if (sp != NULL) msgq(sp, M_SYSERR, "045|messages not turned off: %s", tty); return (1); } return (0); } /* * cl_ssize -- * Return the terminal size. * * PUBLIC: int cl_ssize(SCR *, int, size_t *, size_t *, int *); */ int cl_ssize(sp, sigwinch, rowp, colp, changedp) SCR *sp; int sigwinch; size_t *rowp, *colp; int *changedp; { #ifdef TIOCGWINSZ struct winsize win; #endif size_t col, row; int rval; char *p; /* Assume it's changed. */ if (changedp != NULL) *changedp = 1; /* * !!! * sp may be NULL. * * Get the screen rows and columns. If the values are wrong, it's * not a big deal -- as soon as the user sets them explicitly the * environment will be set and the screen package will use the new * values. * * Try TIOCGWINSZ. */ row = col = 0; #ifdef TIOCGWINSZ if (ioctl(STDERR_FILENO, TIOCGWINSZ, &win) != -1) { row = win.ws_row; col = win.ws_col; } #endif /* If here because of suspend or a signal, only trust TIOCGWINSZ. */ if (sigwinch) { /* * Somebody didn't get TIOCGWINSZ right, or has suspend * without window resizing support. The user just lost, * but there's nothing we can do. */ if (row == 0 || col == 0) { if (changedp != NULL) *changedp = 0; return (0); } /* * SunOS systems deliver SIGWINCH when windows are uncovered * as well as when they change size. In addition, we call * here when continuing after being suspended since the window * may have changed size. Since we don't want to background * all of the screens just because the window was uncovered, * ignore the signal if there's no change. */ if (sp != NULL && row == O_VAL(sp, O_LINES) && col == O_VAL(sp, O_COLUMNS)) { if (changedp != NULL) *changedp = 0; return (0); } if (rowp != NULL) *rowp = row; if (colp != NULL) *colp = col; return (0); } /* * !!! * If TIOCGWINSZ failed, or had entries of 0, try termcap. This * routine is called before any termcap or terminal information * has been set up. If there's no TERM environmental variable set, * let it go, at least ex can run. */ if (row == 0 || col == 0) { if ((p = getenv("TERM")) == NULL) goto noterm; if (row == 0) { if ((rval = tigetnum("lines")) < 0) msgq(sp, M_SYSERR, "tigetnum: lines"); else row = rval; } if (col == 0) { if ((rval = tigetnum("cols")) < 0) msgq(sp, M_SYSERR, "tigetnum: cols"); else col = rval; } } /* If nothing else, well, it's probably a VT100. */ noterm: if (row == 0) row = 24; if (col == 0) col = 80; /* * !!! * POSIX 1003.2 requires the environment to override everything. * Often, people can get nvi to stop messing up their screen by * deleting the LINES and COLUMNS environment variables from their * dot-files. */ if ((p = getenv("LINES")) != NULL) row = strtol(p, NULL, 10); if ((p = getenv("COLUMNS")) != NULL) col = strtol(p, NULL, 10); if (rowp != NULL) *rowp = row; if (colp != NULL) *colp = col; return (0); } #ifdef _USE_OLD_CURSES_ /* * cl_putchar -- * Function version of putchar, for tputs. * * PUBLIC: int cl_putchar(int); */ void cl_putchar(ch) int ch; { (void)putchar(ch); } #else /* * cl_putchar -- * Function version of putchar, for tputs. * * PUBLIC: int cl_putchar(int); */ int cl_putchar(ch) int ch; { return (putchar(ch)); } #endif