/* $Header: /afs/dev.mit.edu/project/sipb/repository/third/tcsh/ed.screen.c,v 1.1.1.1 1997/12/10 21:32:12 ghudson Exp $ */ /* * ed.screen.c: Editor/termcap-curses interface */ /*- * Copyright (c) 1980, 1991 The Regents of the University of California. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include "sh.h" RCSID("$Id: ed.screen.c,v 1.1.1.1 1997/12/10 21:32:12 ghudson Exp $") #include "ed.h" #include "tc.h" #include "ed.defns.h" /* * We don't prototype these, cause some systems have them wrong! */ extern char *tgoto(); extern char *tgetstr(); extern char *tputs(); extern int tgetent(); extern int tgetflag(); extern int tgetnum(); /* #define DEBUG_LITERAL */ /* * IMPORTANT NOTE: these routines are allowed to look at the current screen * and the current possition assuming that it is correct. If this is not * true, then the update will be WRONG! This is (should be) a valid * assumption... */ #define TC_BUFSIZE 2048 #define GoodStr(a) (tstr[a].str != NULL && tstr[a].str[0] != '\0') #define Str(a) tstr[a].str #define Val(a) tval[a].val static struct { char *b_name; int b_rate; } baud_rate[] = { #ifdef B0 { "0", B0 }, #endif #ifdef B50 { "50", B50 }, #endif #ifdef B75 { "75", B75 }, #endif #ifdef B110 { "110", B110 }, #endif #ifdef B134 { "134", B134 }, #endif #ifdef B150 { "150", B150 }, #endif #ifdef B200 { "200", B200 }, #endif #ifdef B300 { "300", B300 }, #endif #ifdef B600 { "600", B600 }, #endif #ifdef B900 { "900", B900 }, #endif #ifdef B1200 { "1200", B1200 }, #endif #ifdef B1800 { "1800", B1800 }, #endif #ifdef B2400 { "2400", B2400 }, #endif #ifdef B3600 { "3600", B3600 }, #endif #ifdef B4800 { "4800", B4800 }, #endif #ifdef B7200 { "7200", B7200 }, #endif #ifdef B9600 { "9600", B9600 }, #endif #ifdef EXTA { "19200", EXTA }, #endif #ifdef B19200 { "19200", B19200 }, #endif #ifdef EXTB { "38400", EXTB }, #endif #ifdef B38400 { "38400", B38400 }, #endif { NULL, 0 } }; static struct termcapstr { char *name; char *long_name; char *str; } tstr[] = { #define T_al 0 { "al", "add new blank line", NULL }, #define T_bl 1 { "bl", "audible bell", NULL }, #define T_cd 2 { "cd", "clear to bottom", NULL }, #define T_ce 3 { "ce", "clear to end of line", NULL }, #define T_ch 4 { "ch", "cursor to horiz pos", NULL }, #define T_cl 5 { "cl", "clear screen", NULL }, #define T_dc 6 { "dc", "delete a character", NULL }, #define T_dl 7 { "dl", "delete a line", NULL }, #define T_dm 8 { "dm", "start delete mode", NULL }, #define T_ed 9 { "ed", "end delete mode", NULL }, #define T_ei 10 { "ei", "end insert mode", NULL }, #define T_fs 11 { "fs", "cursor from status line", NULL }, #define T_ho 12 { "ho", "home cursor", NULL }, #define T_ic 13 { "ic", "insert character", NULL }, #define T_im 14 { "im", "start insert mode", NULL }, #define T_ip 15 { "ip", "insert padding", NULL }, #define T_kd 16 { "kd", "sends cursor down", NULL }, #define T_kl 17 { "kl", "sends cursor left", NULL }, #define T_kr 18 { "kr", "sends cursor right", NULL }, #define T_ku 19 { "ku", "sends cursor up", NULL }, #define T_md 20 { "md", "begin bold", NULL }, #define T_me 21 { "me", "end attributes", NULL }, #define T_nd 22 { "nd", "non destructive space", NULL }, #define T_se 23 { "se", "end standout", NULL }, #define T_so 24 { "so", "begin standout", NULL }, #define T_ts 25 { "ts", "cursor to status line", NULL }, #define T_up 26 { "up", "cursor up one", NULL }, #define T_us 27 { "us", "begin underline", NULL }, #define T_ue 28 { "ue", "end underline", NULL }, #define T_vb 29 { "vb", "visible bell", NULL }, #define T_DC 30 { "DC", "delete multiple chars", NULL }, #define T_DO 31 { "DO", "cursor down multiple", NULL }, #define T_IC 32 { "IC", "insert multiple chars", NULL }, #define T_LE 33 { "LE", "cursor left multiple", NULL }, #define T_RI 34 { "RI", "cursor right multiple", NULL }, #define T_UP 35 { "UP", "cursor up multiple", NULL }, #define T_str 36 { NULL, NULL, NULL } }; static struct termcapval { char *name; char *long_name; int val; } tval[] = { #define T_am 0 { "am", "Has automatic margins", 0 }, #define T_pt 1 { "pt", "Can use physical tabs", 0 }, #define T_li 2 { "li", "Number of lines", 0 }, #define T_co 3 { "co", "Number of columns", 0 }, #define T_km 4 { "km", "Has meta key", 0 }, #define T_xn 5 { "xn", "Newline ignored at right margin", 0 }, #define T_val 6 { NULL, NULL, 0 } }; /* * A very useful table from justin@crim.ca (Justin Bur) :-) * (Modified by per@erix.ericsson.se (Per Hedeland) * - first (and second:-) case fixed) * * Description Termcap variables tcsh behavior * am xn UseRightmost SendCRLF * -------------- ------- ------- ------------ ------------ * Automargins yes no yes no * Magic Margins yes yes yes no * No Wrap no -- yes yes */ static bool me_all = 0; /* does two or more of the attributes use me */ static void ReBufferDisplay __P((void)); static void TCalloc __P((struct termcapstr *, char *)); static void TCalloc(t, cap) struct termcapstr *t; char *cap; { static char termcap_alloc[TC_BUFSIZE]; char termbuf[TC_BUFSIZE]; struct termcapstr *ts; static int tloc = 0; int tlen, clen; if (cap == NULL || *cap == '\0') { t->str = NULL; return; } else clen = strlen(cap); if (t->str == NULL) tlen = 0; else tlen = strlen(t->str); /* * New string is shorter; no need to allocate space */ if (clen <= tlen) { (void) strcpy(t->str, cap); return; } /* * New string is longer; see if we have enough space to append */ if (tloc + 3 < TC_BUFSIZE) { (void) strcpy(t->str = &termcap_alloc[tloc], cap); tloc += clen + 1; /* one for \0 */ return; } /* * Compact our buffer; no need to check compaction, cause we know it * fits... */ tlen = 0; for (ts = tstr; ts->name != NULL; ts++) if (t != ts && ts->str != NULL && ts->str[0] != '\0') { char *ptr; for (ptr = ts->str; *ptr != '\0'; termbuf[tlen++] = *ptr++) continue; termbuf[tlen++] = '\0'; } (void) memmove((ptr_t) termcap_alloc, (ptr_t) termbuf, TC_BUFSIZE); tloc = tlen; if (tloc + 3 >= TC_BUFSIZE) { stderror(ERR_NAME | ERR_TCNOSTR); return; } (void) strcpy(t->str = &termcap_alloc[tloc], cap); tloc += clen + 1; /* one for \0 */ return; } /*ARGSUSED*/ void TellTC(what) char *what; { struct termcapstr *t; xprintf("\n\tTcsh thinks your terminal has the\n"); xprintf("\tfollowing characteristics:\n\n"); xprintf("\tIt has %d columns and %d lines\n", Val(T_co), Val(T_li)); xprintf("\tIt has %s meta key\n", T_HasMeta ? "a" : "no"); xprintf("\tIt can%suse tabs\n", T_Tabs ? " " : "not "); xprintf("\tIt %s automatic margins\n", (T_Margin&MARGIN_AUTO)?"has":"does not have"); if (T_Margin&MARGIN_AUTO) xprintf("\tIt %s magic margins\n", (T_Margin&MARGIN_MAGIC)?"has":"does not have"); for (t = tstr; t->name != NULL; t++) xprintf("\t%25s (%s) == %s\n", t->long_name, t->name, t->str && *t->str ? t->str : "(empty)"); xputchar('\n'); } static void ReBufferDisplay() { register int i; Char **b; Char **bufp; b = Display; Display = NULL; if (b != NULL) { for (bufp = b; *bufp != NULL; bufp++) xfree((ptr_t) * bufp); xfree((ptr_t) b); } b = Vdisplay; Vdisplay = NULL; if (b != NULL) { for (bufp = b; *bufp != NULL; bufp++) xfree((ptr_t) * bufp); xfree((ptr_t) b); } TermH = Val(T_co); TermV = (INBUFSIZE * 4) / TermH + 1; b = (Char **) xmalloc((size_t) (sizeof(Char *) * (TermV + 1))); for (i = 0; i < TermV; i++) b[i] = (Char *) xmalloc((size_t) (sizeof(Char) * (TermH + 1))); b[TermV] = NULL; Display = b; b = (Char **) xmalloc((size_t) (sizeof(Char *) * (TermV + 1))); for (i = 0; i < TermV; i++) b[i] = (Char *) xmalloc((size_t) (sizeof(Char) * (TermH + 1))); b[TermV] = NULL; Vdisplay = b; } void SetTC(what, how) char *what, *how; { struct termcapstr *ts; struct termcapval *tv; /* * Do the strings first */ setname("settc"); for (ts = tstr; ts->name != NULL; ts++) if (strcmp(ts->name, what) == 0) break; if (ts->name != NULL) { TCalloc(ts, how); /* * Reset variables */ if (GoodStr(T_me) && GoodStr(T_ue)) me_all = (strcmp(Str(T_me), Str(T_ue)) == 0); else me_all = 0; if (GoodStr(T_me) && GoodStr(T_se)) me_all |= (strcmp(Str(T_me), Str(T_se)) == 0); T_CanCEOL = GoodStr(T_ce); T_CanDel = GoodStr(T_dc) || GoodStr(T_DC); T_CanIns = GoodStr(T_im) || GoodStr(T_ic) || GoodStr(T_IC); T_CanUP = GoodStr(T_up) || GoodStr(T_UP); return; } /* * Do the numeric ones second */ for (tv = tval; tv->name != NULL; tv++) if (strcmp(tv->name, what) == 0) break; if (tv->name != NULL) { if (tv == &tval[T_pt] || tv == &tval[T_km] || tv == &tval[T_am] || tv == &tval[T_xn]) { if (strcmp(how, "yes") == 0) tv->val = 1; else if (strcmp(how, "no") == 0) tv->val = 0; else { stderror(ERR_SETTCUS, tv->name); return; } T_Tabs = Val(T_pt); T_HasMeta = Val(T_km); T_Margin = Val(T_am) ? MARGIN_AUTO : 0; T_Margin |= Val(T_xn) ? MARGIN_MAGIC : 0; if (tv == &tval[T_am] || tv == &tval[T_xn]) ChangeSize(Val(T_li), Val(T_co)); return; } else { tv->val = atoi(how); T_Cols = Val(T_co); T_Lines = Val(T_li); if (tv == &tval[T_co] || tv == &tval[T_li]) ChangeSize(Val(T_li), Val(T_co)); return; } } stderror(ERR_NAME | ERR_TCCAP, what); return; } /* * Print the termcap string out with variable substitution */ void EchoTC(v) Char **v; { char *cap, *scap, cv[BUFSIZE]; int arg_need, arg_cols, arg_rows; int verbose = 0, silent = 0; char *area; static char *fmts = "%s\n", *fmtd = "%d\n"; struct termcapstr *t; char buf[TC_BUFSIZE]; area = buf; setname("echotc"); tglob(v); if (gflag) { v = globall(v); if (v == 0) stderror(ERR_NAME | ERR_NOMATCH); } else v = gargv = saveblk(v); trim(v); if (!*v || *v[0] == '\0') return; if (v[0][0] == '-') { switch (v[0][1]) { case 'v': verbose = 1; break; case 's': silent = 1; break; default: stderror(ERR_NAME | ERR_TCUSAGE); break; } v++; } if (!*v || *v[0] == '\0') return; (void) strcpy(cv, short2str(*v)); if (strcmp(cv, "tabs") == 0) { xprintf(fmts, T_Tabs ? "yes" : "no"); flush(); return; } else if (strcmp(cv, "meta") == 0) { xprintf(fmts, Val(T_km) ? "yes" : "no"); flush(); return; } else if (strcmp(cv, "xn") == 0) { xprintf(fmts, T_Margin & MARGIN_MAGIC ? "yes" : "no"); flush(); return; } else if (strcmp(cv, "am") == 0) { xprintf(fmts, T_Margin & MARGIN_AUTO ? "yes" : "no"); flush(); return; } else if (strcmp(cv, "baud") == 0) { int i; for (i = 0; baud_rate[i].b_name != NULL; i++) if (T_Speed == baud_rate[i].b_rate) { xprintf(fmts, baud_rate[i].b_name); flush(); return; } xprintf(fmtd, 0); flush(); return; } else if (strcmp(cv, "rows") == 0 || strcmp(cv, "lines") == 0) { xprintf(fmtd, Val(T_li)); flush(); return; } else if (strcmp(cv, "cols") == 0) { xprintf(fmtd, Val(T_co)); flush(); return; } /* * Try to use our local definition first */ scap = NULL; for (t = tstr; t->name != NULL; t++) if (strcmp(t->name, cv) == 0) { scap = t->str; break; } if (t->name == NULL) scap = tgetstr(cv, &area); if (!scap || scap[0] == '\0') { if (tgetflag(cv, &area)) { xprintf("yes\n"); return; } if (silent) return; else stderror(ERR_NAME | ERR_TCCAP, cv); } /* * Count home many values we need for this capability. */ for (cap = scap, arg_need = 0; *cap; cap++) if (*cap == '%') switch (*++cap) { case 'd': case '2': case '3': case '.': case '+': arg_need++; break; case '%': case '>': case 'i': case 'r': case 'n': case 'B': case 'D': break; default: /* * hpux has lot's of them... */ if (verbose) stderror(ERR_NAME | ERR_TCPARM, *cap); /* This is bad, but I won't complain */ break; } switch (arg_need) { case 0: v++; if (*v && *v[0]) { if (silent) return; else stderror(ERR_NAME | ERR_TCARGS, cv, arg_need); } (void) tputs(scap, 1, putraw); break; case 1: v++; if (!*v || *v[0] == '\0') stderror(ERR_NAME | ERR_TCNARGS, cv, 1); arg_cols = 0; arg_rows = atoi(short2str(*v)); v++; if (*v && *v[0]) { if (silent) return; else stderror(ERR_NAME | ERR_TCARGS, cv, arg_need); } (void) tputs(tgoto(scap, arg_cols, arg_rows), 1, putraw); break; default: /* This is wrong, but I will ignore it... */ if (verbose) stderror(ERR_NAME | ERR_TCARGS, cv, arg_need); /*FALLTHROUGH*/ case 2: v++; if (!*v || *v[0] == '\0') { if (silent) return; else stderror(ERR_NAME | ERR_TCNARGS, cv, 2); } arg_cols = atoi(short2str(*v)); v++; if (!*v || *v[0] == '\0') { if (silent) return; else stderror(ERR_NAME | ERR_TCNARGS, cv, 2); } arg_rows = atoi(short2str(*v)); v++; if (*v && *v[0]) { if (silent) return; else stderror(ERR_NAME | ERR_TCARGS, cv, arg_need); } (void) tputs(tgoto(scap, arg_cols, arg_rows), arg_rows, putraw); break; } flush(); if (gargv) { blkfree(gargv); gargv = 0; } } bool GotTermCaps = 0; static struct { Char *name; int key; XmapVal fun; int type; } arrow[] = { #define A_K_DN 0 { STRdown, T_kd }, #define A_K_UP 1 { STRup, T_ku }, #define A_K_LT 2 { STRleft, T_kl }, #define A_K_RT 3 { STRright, T_kr } }; void ResetArrowKeys() { arrow[A_K_DN].fun.cmd = F_DOWN_HIST; arrow[A_K_DN].type = XK_CMD; arrow[A_K_UP].fun.cmd = F_UP_HIST; arrow[A_K_UP].type = XK_CMD; arrow[A_K_LT].fun.cmd = F_CHARBACK; arrow[A_K_LT].type = XK_CMD; arrow[A_K_RT].fun.cmd = F_CHARFWD; arrow[A_K_RT].type = XK_CMD; } void DefaultArrowKeys() { static Char strA[] = {033, '[', 'A', '\0'}; static Char strB[] = {033, '[', 'B', '\0'}; static Char strC[] = {033, '[', 'C', '\0'}; static Char strD[] = {033, '[', 'D', '\0'}; static Char stOA[] = {033, 'O', 'A', '\0'}; static Char stOB[] = {033, 'O', 'B', '\0'}; static Char stOC[] = {033, 'O', 'C', '\0'}; static Char stOD[] = {033, 'O', 'D', '\0'}; AddXkey(strA, &arrow[A_K_UP].fun, arrow[A_K_UP].type); AddXkey(strB, &arrow[A_K_DN].fun, arrow[A_K_DN].type); AddXkey(strC, &arrow[A_K_RT].fun, arrow[A_K_RT].type); AddXkey(strD, &arrow[A_K_LT].fun, arrow[A_K_LT].type); AddXkey(stOA, &arrow[A_K_UP].fun, arrow[A_K_UP].type); AddXkey(stOB, &arrow[A_K_DN].fun, arrow[A_K_DN].type); AddXkey(stOC, &arrow[A_K_RT].fun, arrow[A_K_RT].type); AddXkey(stOD, &arrow[A_K_LT].fun, arrow[A_K_LT].type); if (VImode) { AddXkey(&strA[1], &arrow[A_K_UP].fun, arrow[A_K_UP].type); AddXkey(&strB[1], &arrow[A_K_DN].fun, arrow[A_K_DN].type); AddXkey(&strC[1], &arrow[A_K_RT].fun, arrow[A_K_RT].type); AddXkey(&strD[1], &arrow[A_K_LT].fun, arrow[A_K_LT].type); AddXkey(&stOA[1], &arrow[A_K_UP].fun, arrow[A_K_UP].type); AddXkey(&stOB[1], &arrow[A_K_DN].fun, arrow[A_K_DN].type); AddXkey(&stOC[1], &arrow[A_K_RT].fun, arrow[A_K_RT].type); AddXkey(&stOD[1], &arrow[A_K_LT].fun, arrow[A_K_LT].type); } } int SetArrowKeys(name, fun, type) Char *name; XmapVal *fun; int type; { int i; for (i = 0; i < 4; i++) if (Strcmp(name, arrow[i].name) == 0) { arrow[i].fun = *fun; arrow[i].type = type; return 0; } return -1; } int ClearArrowKeys(name) Char *name; { int i; for (i = 0; i < 4; i++) if (Strcmp(name, arrow[i].name) == 0) { arrow[i].type = XK_NOD; return 0; } return -1; } void PrintArrowKeys(name) Char *name; { int i; for (i = 0; i < 4; i++) if (name == STRNULL || Strcmp(name, arrow[i].name) == 0) if (arrow[i].type != XK_NOD) printOne(arrow[i].name, &arrow[i].fun, arrow[i].type); } void BindArrowKeys() { KEYCMD *map, *dmap; int i, j; char *p; if (!GotTermCaps) return; map = VImode ? CcAltMap : CcKeyMap; dmap = VImode ? CcViCmdMap : CcEmacsMap; DefaultArrowKeys(); for (i = 0; i < 4; i++) { p = tstr[arrow[i].key].str; if (p && *p) { j = (unsigned char) *p; /* * Assign the arrow keys only if: * * 1. They are multi-character arrow keys and the user * has not re-assigned the leading character, or * has re-assigned the leading character to be F_XKEY * 2. They are single arrow keys pointing to an unassigned key. */ if (arrow[i].type == XK_NOD) ClearXkey(map, str2short(p)); else { if (p[1] && (dmap[j] == map[j] || map[j] == F_XKEY)) { AddXkey(str2short(p), &arrow[i].fun, arrow[i].type); map[j] = F_XKEY; } else if (map[j] == F_UNASSIGNED) { ClearXkey(map, str2short(p)); if (arrow[i].type == XK_CMD) map[j] = arrow[i].fun.cmd; else AddXkey(str2short(p), &arrow[i].fun, arrow[i].type); } } } } } static Char cur_atr = 0; /* current attributes */ void SetAttributes(atr) int atr; { atr &= ATTRIBUTES; if (atr != cur_atr) { if (me_all && GoodStr(T_me)) { if (((cur_atr & BOLD) && !(atr & BOLD)) || ((cur_atr & UNDER) && !(atr & UNDER)) || ((cur_atr & STANDOUT) && !(atr & STANDOUT))) { (void) tputs(Str(T_me), 1, putpure); cur_atr = 0; } } if ((atr & BOLD) != (cur_atr & BOLD)) { if (atr & BOLD) { if (GoodStr(T_md) && GoodStr(T_me)) { (void) tputs(Str(T_md), 1, putpure); cur_atr |= BOLD; } } else { if (GoodStr(T_md) && GoodStr(T_me)) { (void) tputs(Str(T_me), 1, putpure); if ((cur_atr & STANDOUT) && GoodStr(T_se)) { (void) tputs(Str(T_se), 1, putpure); cur_atr &= ~STANDOUT; } if ((cur_atr & UNDER) && GoodStr(T_ue)) { (void) tputs(Str(T_ue), 1, putpure); cur_atr &= ~UNDER; } cur_atr &= ~BOLD; } } } if ((atr & STANDOUT) != (cur_atr & STANDOUT)) { if (atr & STANDOUT) { if (GoodStr(T_so) && GoodStr(T_se)) { (void) tputs(Str(T_so), 1, putpure); cur_atr |= STANDOUT; } } else { if (GoodStr(T_se)) { (void) tputs(Str(T_se), 1, putpure); cur_atr &= ~STANDOUT; } } } if ((atr & UNDER) != (cur_atr & UNDER)) { if (atr & UNDER) { if (GoodStr(T_us) && GoodStr(T_ue)) { (void) tputs(Str(T_us), 1, putpure); cur_atr |= UNDER; } } else { if (GoodStr(T_ue)) { (void) tputs(Str(T_ue), 1, putpure); cur_atr &= ~UNDER; } } } } } /* PWP 6-27-88 -- if the tty driver thinks that we can tab, we ask termcap */ int CanWeTab() { return (Val(T_pt)); } void MoveToLine(where) /* move to line (first line == 0) */ int where; /* as efficiently as possible; */ { int del, i; if (where == CursorV) return; if (where > TermV) { #ifdef DEBUG_SCREEN xprintf("MoveToLine: where is ridiculous: %d\r\n", where); flush(); #endif /* DEBUG_SCREEN */ return; } if ((del = where - CursorV) > 0) { while (del > 0) { if ((T_Margin & MARGIN_AUTO) && Display[CursorV][0] != '\0') { /* move without newline */ MoveToChar(TermH - 1); so_write(&Display[CursorV][CursorH], 1); /* updates CursorH/V*/ del--; } else { if ((del > 1) && GoodStr(T_DO)) { (void) tputs(tgoto(Str(T_DO), del, del), del, putpure); del = 0; } else { for ( ; del > 0; del--) (void) putraw('\n'); CursorH = 0; /* because the \n will become \r\n */ } } } } else { /* del < 0 */ if (GoodStr(T_UP) && (-del > 1 || !GoodStr(T_up))) (void) tputs(tgoto(Str(T_UP), -del, -del), -del, putpure); else { if (GoodStr(T_up)) for (i = 0; i < -del; i++) (void) tputs(Str(T_up), 1, putpure); } } CursorV = where; /* now where is here */ } void MoveToChar(where) /* move to character position (where) */ int where; { /* as efficiently as possible */ int del, i; mc_again: if (where == CursorH) return; if (where >= TermH) { #ifdef DEBUG_SCREEN xprintf("MoveToChar: where is riduculous: %d\r\n", where); flush(); #endif /* DEBUG_SCREEN */ return; } if (!where) { /* if where is first column */ (void) putraw('\r'); /* do a CR */ CursorH = 0; return; } del = where - CursorH; if ((del < -4 || del > 4) && GoodStr(T_ch)) /* go there directly */ (void) tputs(tgoto(Str(T_ch), where, where), where, putpure); else { if (del > 0) { /* moving forward */ if ((del > 4) && GoodStr(T_RI)) (void) tputs(tgoto(Str(T_RI), del, del), del, putpure); else { if (T_Tabs) { /* if I can do tabs, use them */ if ((CursorH & 0370) != (where & 0370)) { /* if not within tab stop */ for (i = (CursorH & 0370); i < (where & 0370); i += 8) (void) putraw('\t'); /* then tab over */ CursorH = where & 0370; /* Note: considering that we often want to go to TermH - 1 for the wrapping, it would be nice to optimize this case by tabbing to the last column - but this doesn't work for all terminals! */ } } /* it's usually cheaper to just write the chars, so we do. */ /* NOTE THAT so_write() WILL CHANGE CursorH!!! */ so_write(&Display[CursorV][CursorH], where - CursorH); } } else { /* del < 0 := moving backward */ if ((-del > 4) && GoodStr(T_LE)) (void) tputs(tgoto(Str(T_LE), -del, -del), -del, putpure); else { /* can't go directly there */ /* if the "cost" is greater than the "cost" from col 0 */ if (T_Tabs ? (-del > ((where >> 3) + (where & 07))) : (-del > where)) { (void) putraw('\r'); /* do a CR */ CursorH = 0; goto mc_again; /* and try again */ } for (i = 0; i < -del; i++) (void) putraw('\b'); } } } CursorH = where; /* now where is here */ } void so_write(cp, n) register Char *cp; register int n; { if (n <= 0) return; /* catch bugs */ if (n > TermH) { #ifdef DEBUG_SCREEN xprintf("so_write: n is riduculous: %d\r\n", n); flush(); #endif /* DEBUG_SCREEN */ return; } do { if (*cp & LITERAL) { extern Char *litptr[]; Char *d; #ifdef DEBUG_LITERAL xprintf("so: litnum %d, litptr %x\r\n", *cp & CHAR, litptr[*cp & CHAR]); #endif /* DEBUG_LITERAL */ for (d = litptr[*cp++ & CHAR]; *d & LITERAL; d++) (void) putraw(*d & CHAR); (void) putraw(*d); } else (void) putraw(*cp++); CursorH++; } while (--n); if (CursorH >= TermH) { /* wrap? */ if (T_Margin & MARGIN_AUTO) { /* yes */ CursorH = 0; CursorV++; if (T_Margin & MARGIN_MAGIC) { /* force the wrap to avoid the "magic" situation */ Char c; if ((c = Display[CursorV][CursorH]) != '\0') so_write(&c, 1); else putraw(' '); CursorH = 1; } } else /* no wrap, but cursor stays on screen */ CursorH = TermH - 1; } } void DeleteChars(num) /* deletes characters */ int num; { if (num <= 0) return; if (!T_CanDel) { #ifdef DEBUG_EDIT xprintf(" ERROR: cannot delete \n"); #endif /* DEBUG_EDIT */ flush(); return; } if (num > TermH) { #ifdef DEBUG_SCREEN xprintf("DeleteChars: num is riduculous: %d\r\n", num); flush(); #endif /* DEBUG_SCREEN */ return; } if (GoodStr(T_DC)) /* if I have multiple delete */ if ((num > 1) || !GoodStr(T_dc)) { /* if dc would be more expen. */ (void) tputs(tgoto(Str(T_DC), num, num), num, putpure); return; } if (GoodStr(T_dm)) /* if I have delete mode */ (void) tputs(Str(T_dm), 1, putpure); if (GoodStr(T_dc)) /* else do one at a time */ while (num--) (void) tputs(Str(T_dc), 1, putpure); if (GoodStr(T_ed)) /* if I have delete mode */ (void) tputs(Str(T_ed), 1, putpure); } void Insert_write(cp, num) /* Puts terminal in insert character mode, */ register Char *cp; register int num; /* or inserts num characters in the line */ { if (num <= 0) return; if (!T_CanIns) { #ifdef DEBUG_EDIT xprintf(" ERROR: cannot insert \n"); #endif /* DEBUG_EDIT */ flush(); return; } if (num > TermH) { #ifdef DEBUG_SCREEN xprintf("StartInsert: num is riduculous: %d\r\n", num); flush(); #endif /* DEBUG_SCREEN */ return; } if (GoodStr(T_IC)) /* if I have multiple insert */ if ((num > 1) || !GoodStr(T_ic)) { /* if ic would be more expen. */ (void) tputs(tgoto(Str(T_IC), num, num), num, putpure); so_write(cp, num); /* this updates CursorH/V */ return; } if (GoodStr(T_im) && GoodStr(T_ei)) { /* if I have insert mode */ (void) tputs(Str(T_im), 1, putpure); CursorH += num; do (void) putraw(*cp++); while (--num); if (GoodStr(T_ip)) /* have to make num chars insert */ (void) tputs(Str(T_ip), 1, putpure); (void) tputs(Str(T_ei), 1, putpure); return; } do { if (GoodStr(T_ic)) /* have to make num chars insert */ (void) tputs(Str(T_ic), 1, putpure); /* insert a char */ (void) putraw(*cp++); CursorH++; if (GoodStr(T_ip)) /* have to make num chars insert */ (void) tputs(Str(T_ip), 1, putpure);/* pad the inserted char */ } while (--num); } void ClearEOL(num) /* clear to end of line. There are num */ int num; /* characters to clear */ { register int i; if (num <= 0) return; if (T_CanCEOL && GoodStr(T_ce)) (void) tputs(Str(T_ce), 1, putpure); else { for (i = 0; i < num; i++) (void) putraw(' '); CursorH += num; /* have written num spaces */ } } void ClearScreen() { /* clear the whole screen and home */ if (GoodStr(T_cl)) /* send the clear screen code */ (void) tputs(Str(T_cl), Val(T_li), putpure); else if (GoodStr(T_ho) && GoodStr(T_cd)) { (void) tputs(Str(T_ho), Val(T_li), putpure); /* home */ /* clear to bottom of screen */ (void) tputs(Str(T_cd), Val(T_li), putpure); } else { (void) putraw('\r'); (void) putraw('\n'); } } void Beep() { /* produce a sound */ beep_cmd (); if (adrof(STRnobeep)) return; if (GoodStr(T_vb) && adrof(STRvisiblebell)) (void) tputs(Str(T_vb), 1, putpure); /* visible bell */ else if (GoodStr(T_bl)) /* what termcap says we should use */ (void) tputs(Str(T_bl), 1, putpure); else (void) putraw('\007'); /* an ASCII bell; ^G */ } void ClearToBottom() { /* clear to the bottom of the screen */ if (GoodStr(T_cd)) (void) tputs(Str(T_cd), Val(T_li), putpure); else if (GoodStr(T_ce)) (void) tputs(Str(T_ce), Val(T_li), putpure); } void GetTermCaps() { /* read in the needed terminal capabilites */ register int i; char *ptr; char buf[TC_BUFSIZE]; static char bp[TC_BUFSIZE]; char *area; struct termcapstr *t; #ifdef SIG_WINDOW # ifdef BSDSIGS sigmask_t omask; # endif /* BSDSIGS */ int lins, cols; /* don't want to confuse things here */ # ifdef BSDSIGS omask = sigblock(sigmask(SIG_WINDOW)) & ~sigmask(SIG_WINDOW); # else /* BSDSIGS */ (void) sighold(SIG_WINDOW); # endif /* BSDSIGS */ #endif /* SIG_WINDOW */ area = buf; GotTermCaps = 1; setname("gettermcaps"); ptr = getenv("TERM"); #ifdef apollo /* * If we are on a pad, we pretend that we are dumb. Otherwise the termcap * library will put us in a weird screen mode, thinking that we are going * to use curses */ if (isapad()) ptr = "dumb"; #endif /* apollo */ if (!ptr || !ptr[0]) ptr = "dumb"; setzero(bp, TC_BUFSIZE); i = tgetent(bp, ptr); if (i <= 0) { if (i == -1) { #if (SYSVREL == 0) || defined(IRIS3D) xprintf("tcsh: Cannot open /etc/termcap.\n"); } else if (i == 0) { #endif /* SYSVREL */ xprintf("tcsh: No entry for terminal type \"%s\"\n", getenv("TERM")); } xprintf("tcsh: using dumb terminal settings.\n"); Val(T_co) = 80; /* do a dumb terminal */ Val(T_pt) = Val(T_km) = Val(T_li) = 0; for (t = tstr; t->name != NULL; t++) TCalloc(t, NULL); } else { /* Can we tab */ Val(T_pt) = tgetflag("pt") && !tgetflag("xt"); /* do we have a meta? */ Val(T_km) = (tgetflag("km") || tgetflag("MT")); Val(T_am) = tgetflag("am"); Val(T_xn) = tgetflag("xn"); Val(T_co) = tgetnum("co"); Val(T_li) = tgetnum("li"); for (t = tstr; t->name != NULL; t++) TCalloc(t, tgetstr(t->name, &area)); } if (Val(T_co) < 2) Val(T_co) = 80; /* just in case */ if (Val(T_li) < 1) Val(T_li) = 24; T_Cols = Val(T_co); T_Lines = Val(T_li); if (T_Tabs) T_Tabs = Val(T_pt); T_HasMeta = Val(T_km); T_Margin = Val(T_am) ? MARGIN_AUTO : 0; T_Margin |= Val(T_xn) ? MARGIN_MAGIC : 0; T_CanCEOL = GoodStr(T_ce); T_CanDel = GoodStr(T_dc) || GoodStr(T_DC); T_CanIns = GoodStr(T_im) || GoodStr(T_ic) || GoodStr(T_IC); T_CanUP = GoodStr(T_up) || GoodStr(T_UP); if (GoodStr(T_me) && GoodStr(T_ue)) me_all = (strcmp(Str(T_me), Str(T_ue)) == 0); else me_all = 0; if (GoodStr(T_me) && GoodStr(T_se)) me_all |= (strcmp(Str(T_me), Str(T_se)) == 0); #ifdef DEBUG_SCREEN if (!T_CanUP) { xprintf("tcsh: WARNING: Your terminal cannot move up.\n"); xprintf("Editing may be odd for long lines.\n"); } if (!T_CanCEOL) xprintf("no clear EOL capability.\n"); if (!T_CanDel) xprintf("no delete char capability.\n"); if (!T_CanIns) xprintf("no insert char capability.\n"); #endif /* DEBUG_SCREEN */ #ifdef SIG_WINDOW (void) GetSize(&lins, &cols); /* get the correct window size */ ChangeSize(lins, cols); # ifdef BSDSIGS (void) sigsetmask(omask); /* can change it again */ # else /* BSDSIGS */ (void) sigrelse(SIG_WINDOW); # endif /* BSDSIGS */ #else /* SIG_WINDOW */ ChangeSize(Val(T_li), Val(T_co)); #endif /* SIG_WINDOW */ BindArrowKeys(); } #ifdef SIG_WINDOW /* GetSize(): * Return the new window size in lines and cols, and * true if the size was changed. This can fail if SHIN * is not a tty, but it will work in most cases. */ int GetSize(lins, cols) int *lins, *cols; { *cols = Val(T_co); *lins = Val(T_li); #ifdef TIOCGWINSZ # define KNOWsize # ifndef lint { struct winsize ws; /* from 4.3 */ if (ioctl(SHIN, TIOCGWINSZ, (ioctl_t) &ws) != -1) { if (ws.ws_col) *cols = ws.ws_col; if (ws.ws_row) *lins = ws.ws_row; } } # endif /* !lint */ #else /* TIOCGWINSZ */ # ifdef TIOCGSIZE # define KNOWsize { struct ttysize ts; /* from Sun */ if (ioctl(SHIN, TIOCGSIZE, (ioctl_t) &ts) != -1) { if (ts.ts_cols) *cols = ts.ts_cols; if (ts.ts_lines) *lins = ts.ts_lines; } } # endif /* TIOCGSIZE */ #endif /* TIOCGWINSZ */ return (Val(T_co) != *cols || Val(T_li) != *lins); } #endif /* SIGWINDOW */ void ChangeSize(lins, cols) int lins, cols; { /* * Just in case */ Val(T_co) = (cols < 2) ? 80 : cols; Val(T_li) = (lins < 1) ? 24 : lins; #ifdef KNOWsize /* * We want to affect the environment only when we have a valid * setup, not when we get bad settings. Consider the following scenario: * We just logged in, and we have not initialized the editor yet. * We reset termcap with tset, and not $TERMCAP has the right * terminal size. But since the editor is not initialized yet, and * the kernel's notion of the terminal size might be wrong we arrive * here with lines = columns = 0. If we reset the environment we lose * our only chance to get the window size right. */ if (Val(T_co) == cols && Val(T_li) == lins) { Char buf[10]; char *tptr; if (getenv("COLUMNS")) { Itoa(Val(T_co), buf); tsetenv(STRCOLUMNS, buf); } if (getenv("LINES")) { Itoa(Val(T_li), buf); tsetenv(STRLINES, buf); } if ((tptr = getenv("TERMCAP")) != NULL) { Char termcap[1024], backup[1024], *ptr; int i; ptr = str2short(tptr); (void) Strncpy(termcap, ptr, 1024); termcap[1023] = '\0'; /* update termcap string; first do columns */ buf[0] = 'c'; buf[1] = 'o'; buf[2] = '#'; buf[3] = '\0'; if ((ptr = Strstr(termcap, buf)) == NULL) { (void) Strcpy(backup, termcap); } else { i = ptr - termcap + Strlen(buf); (void) Strncpy(backup, termcap, i); backup[i] = '\0'; Itoa(Val(T_co), buf); (void) Strcat(backup + i, buf); ptr = Strchr(ptr, ':'); (void) Strcat(backup, ptr); } /* now do lines */ buf[0] = 'l'; buf[1] = 'i'; buf[2] = '#'; buf[3] = '\0'; if ((ptr = Strstr(backup, buf)) == NULL) { (void) Strcpy(termcap, backup); } else { i = ptr - backup + Strlen(buf); (void) Strncpy(termcap, backup, i); termcap[i] = '\0'; Itoa(Val(T_li), buf); (void) Strcat(termcap, buf); ptr = Strchr(ptr, ':'); (void) Strcat(termcap, ptr); } tsetenv(STRTERMCAP, termcap); } } #endif /* KNOWsize */ ReBufferDisplay(); /* re-make display buffers */ ClearDisp(); }