/* $NetBSD: terminal.c,v 1.32.8.1 2017/07/23 14:41:26 snj Exp $ */ /*- * Copyright (c) 1992, 1993 * The Regents of the University of California. All rights reserved. * * This code is derived from software contributed to Berkeley by * Christos Zoulas of Cornell University. * * 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. 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 "config.h" #if !defined(lint) && !defined(SCCSID) #if 0 static char sccsid[] = "@(#)term.c 8.2 (Berkeley) 4/30/95"; #else __RCSID("$NetBSD: terminal.c,v 1.32.8.1 2017/07/23 14:41:26 snj Exp $"); #endif #endif /* not lint && not SCCSID */ /* * terminal.c: Editor/termcap-curses interface * We have to declare a static variable here, since the * termcap putchar routine does not take an argument! */ #include #include #include #include #include #include #include #include #ifdef HAVE_TERMCAP_H #include #endif #ifdef HAVE_CURSES_H #include #elif HAVE_NCURSES_H #include #endif /* Solaris's term.h does horrid things. */ #if defined(HAVE_TERM_H) && !defined(__sun) && !defined(HAVE_TERMCAP_H) #include #endif #ifdef _REENTRANT #include #endif #include "el.h" #include "fcns.h" /* * IMPORTANT NOTE: these routines are allowed to look at the current screen * and the current position 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 ((size_t)2048) #define GoodStr(a) (el->el_terminal.t_str[a] != NULL && \ el->el_terminal.t_str[a][0] != '\0') #define Str(a) el->el_terminal.t_str[a] #define Val(a) el->el_terminal.t_val[a] static const struct termcapstr { const char *name; const char *long_name; } tstr[] = { #define T_al 0 { "al", "add new blank line" }, #define T_bl 1 { "bl", "audible bell" }, #define T_cd 2 { "cd", "clear to bottom" }, #define T_ce 3 { "ce", "clear to end of line" }, #define T_ch 4 { "ch", "cursor to horiz pos" }, #define T_cl 5 { "cl", "clear screen" }, #define T_dc 6 { "dc", "delete a character" }, #define T_dl 7 { "dl", "delete a line" }, #define T_dm 8 { "dm", "start delete mode" }, #define T_ed 9 { "ed", "end delete mode" }, #define T_ei 10 { "ei", "end insert mode" }, #define T_fs 11 { "fs", "cursor from status line" }, #define T_ho 12 { "ho", "home cursor" }, #define T_ic 13 { "ic", "insert character" }, #define T_im 14 { "im", "start insert mode" }, #define T_ip 15 { "ip", "insert padding" }, #define T_kd 16 { "kd", "sends cursor down" }, #define T_kl 17 { "kl", "sends cursor left" }, #define T_kr 18 { "kr", "sends cursor right" }, #define T_ku 19 { "ku", "sends cursor up" }, #define T_md 20 { "md", "begin bold" }, #define T_me 21 { "me", "end attributes" }, #define T_nd 22 { "nd", "non destructive space" }, #define T_se 23 { "se", "end standout" }, #define T_so 24 { "so", "begin standout" }, #define T_ts 25 { "ts", "cursor to status line" }, #define T_up 26 { "up", "cursor up one" }, #define T_us 27 { "us", "begin underline" }, #define T_ue 28 { "ue", "end underline" }, #define T_vb 29 { "vb", "visible bell" }, #define T_DC 30 { "DC", "delete multiple chars" }, #define T_DO 31 { "DO", "cursor down multiple" }, #define T_IC 32 { "IC", "insert multiple chars" }, #define T_LE 33 { "LE", "cursor left multiple" }, #define T_RI 34 { "RI", "cursor right multiple" }, #define T_UP 35 { "UP", "cursor up multiple" }, #define T_kh 36 { "kh", "send cursor home" }, #define T_at7 37 { "@7", "send cursor end" }, #define T_kD 38 { "kD", "send cursor delete" }, #define T_str 39 { NULL, NULL } }; static const struct termcapval { const char *name; const char *long_name; } tval[] = { #define T_am 0 { "am", "has automatic margins" }, #define T_pt 1 { "pt", "has physical tabs" }, #define T_li 2 { "li", "Number of lines" }, #define T_co 3 { "co", "Number of columns" }, #define T_km 4 { "km", "Has meta key" }, #define T_xt 5 { "xt", "Tab chars destructive" }, #define T_xn 6 { "xn", "newline ignored at right margin" }, #define T_MT 7 { "MT", "Has meta key" }, /* XXX? */ #define T_val 8 { NULL, NULL, } }; /* do two or more of the attributes use me */ static void terminal_setflags(EditLine *); static int terminal_rebuffer_display(EditLine *); static void terminal_free_display(EditLine *); static int terminal_alloc_display(EditLine *); static void terminal_alloc(EditLine *, const struct termcapstr *, const char *); static void terminal_init_arrow(EditLine *); static void terminal_reset_arrow(EditLine *); static int terminal_putc(int); static void terminal_tputs(EditLine *, const char *, int); #ifdef _REENTRANT static pthread_mutex_t terminal_mutex = PTHREAD_MUTEX_INITIALIZER; #endif static FILE *terminal_outfile = NULL; /* terminal_setflags(): * Set the terminal capability flags */ static void terminal_setflags(EditLine *el) { EL_FLAGS = 0; if (el->el_tty.t_tabs) EL_FLAGS |= (Val(T_pt) && !Val(T_xt)) ? TERM_CAN_TAB : 0; EL_FLAGS |= (Val(T_km) || Val(T_MT)) ? TERM_HAS_META : 0; EL_FLAGS |= GoodStr(T_ce) ? TERM_CAN_CEOL : 0; EL_FLAGS |= (GoodStr(T_dc) || GoodStr(T_DC)) ? TERM_CAN_DELETE : 0; EL_FLAGS |= (GoodStr(T_im) || GoodStr(T_ic) || GoodStr(T_IC)) ? TERM_CAN_INSERT : 0; EL_FLAGS |= (GoodStr(T_up) || GoodStr(T_UP)) ? TERM_CAN_UP : 0; EL_FLAGS |= Val(T_am) ? TERM_HAS_AUTO_MARGINS : 0; EL_FLAGS |= Val(T_xn) ? TERM_HAS_MAGIC_MARGINS : 0; if (GoodStr(T_me) && GoodStr(T_ue)) EL_FLAGS |= (strcmp(Str(T_me), Str(T_ue)) == 0) ? TERM_CAN_ME : 0; else EL_FLAGS &= ~TERM_CAN_ME; if (GoodStr(T_me) && GoodStr(T_se)) EL_FLAGS |= (strcmp(Str(T_me), Str(T_se)) == 0) ? TERM_CAN_ME : 0; #ifdef DEBUG_SCREEN if (!EL_CAN_UP) { (void) fprintf(el->el_errfile, "WARNING: Your terminal cannot move up.\n"); (void) fprintf(el->el_errfile, "Editing may be odd for long lines.\n"); } if (!EL_CAN_CEOL) (void) fprintf(el->el_errfile, "no clear EOL capability.\n"); if (!EL_CAN_DELETE) (void) fprintf(el->el_errfile, "no delete char capability.\n"); if (!EL_CAN_INSERT) (void) fprintf(el->el_errfile, "no insert char capability.\n"); #endif /* DEBUG_SCREEN */ } /* terminal_init(): * Initialize the terminal stuff */ libedit_private int terminal_init(EditLine *el) { el->el_terminal.t_buf = el_malloc(TC_BUFSIZE * sizeof(*el->el_terminal.t_buf)); if (el->el_terminal.t_buf == NULL) goto fail1; el->el_terminal.t_cap = el_malloc(TC_BUFSIZE * sizeof(*el->el_terminal.t_cap)); if (el->el_terminal.t_cap == NULL) goto fail2; el->el_terminal.t_fkey = el_malloc(A_K_NKEYS * sizeof(*el->el_terminal.t_fkey)); if (el->el_terminal.t_fkey == NULL) goto fail3; el->el_terminal.t_loc = 0; el->el_terminal.t_str = el_malloc(T_str * sizeof(*el->el_terminal.t_str)); if (el->el_terminal.t_str == NULL) goto fail4; (void) memset(el->el_terminal.t_str, 0, T_str * sizeof(*el->el_terminal.t_str)); el->el_terminal.t_val = el_malloc(T_val * sizeof(*el->el_terminal.t_val)); if (el->el_terminal.t_val == NULL) goto fail5; (void) memset(el->el_terminal.t_val, 0, T_val * sizeof(*el->el_terminal.t_val)); (void) terminal_set(el, NULL); terminal_init_arrow(el); return 0; fail5: free(el->el_terminal.t_str); el->el_terminal.t_str = NULL; fail4: free(el->el_terminal.t_fkey); el->el_terminal.t_fkey = NULL; fail3: free(el->el_terminal.t_cap); el->el_terminal.t_cap = NULL; fail2: free(el->el_terminal.t_buf); el->el_terminal.t_buf = NULL; fail1: return -1; } /* terminal_end(): * Clean up the terminal stuff */ libedit_private void terminal_end(EditLine *el) { el_free(el->el_terminal.t_buf); el->el_terminal.t_buf = NULL; el_free(el->el_terminal.t_cap); el->el_terminal.t_cap = NULL; el->el_terminal.t_loc = 0; el_free(el->el_terminal.t_str); el->el_terminal.t_str = NULL; el_free(el->el_terminal.t_val); el->el_terminal.t_val = NULL; el_free(el->el_terminal.t_fkey); el->el_terminal.t_fkey = NULL; terminal_free_display(el); } /* terminal_alloc(): * Maintain a string pool for termcap strings */ static void terminal_alloc(EditLine *el, const struct termcapstr *t, const char *cap) { char termbuf[TC_BUFSIZE]; size_t tlen, clen; char **tlist = el->el_terminal.t_str; char **tmp, **str = &tlist[t - tstr]; (void) memset(termbuf, 0, sizeof(termbuf)); if (cap == NULL || *cap == '\0') { *str = NULL; return; } else clen = strlen(cap); tlen = *str == NULL ? 0 : strlen(*str); /* * New string is shorter; no need to allocate space */ if (clen <= tlen) { if (*str) (void) strcpy(*str, cap); /* XXX strcpy is safe */ return; } /* * New string is longer; see if we have enough space to append */ if (el->el_terminal.t_loc + 3 < TC_BUFSIZE) { /* XXX strcpy is safe */ (void) strcpy(*str = &el->el_terminal.t_buf[ el->el_terminal.t_loc], cap); el->el_terminal.t_loc += clen + 1; /* one for \0 */ return; } /* * Compact our buffer; no need to check compaction, cause we know it * fits... */ tlen = 0; for (tmp = tlist; tmp < &tlist[T_str]; tmp++) if (*tmp != NULL && **tmp != '\0' && *tmp != *str) { char *ptr; for (ptr = *tmp; *ptr != '\0'; termbuf[tlen++] = *ptr++) continue; termbuf[tlen++] = '\0'; } memcpy(el->el_terminal.t_buf, termbuf, TC_BUFSIZE); el->el_terminal.t_loc = tlen; if (el->el_terminal.t_loc + 3 >= TC_BUFSIZE) { (void) fprintf(el->el_errfile, "Out of termcap string space.\n"); return; } /* XXX strcpy is safe */ (void) strcpy(*str = &el->el_terminal.t_buf[el->el_terminal.t_loc], cap); el->el_terminal.t_loc += (size_t)clen + 1; /* one for \0 */ return; } /* terminal_rebuffer_display(): * Rebuffer the display after the screen changed size */ static int terminal_rebuffer_display(EditLine *el) { coord_t *c = &el->el_terminal.t_size; terminal_free_display(el); c->h = Val(T_co); c->v = Val(T_li); if (terminal_alloc_display(el) == -1) return -1; return 0; } static wchar_t ** terminal_alloc_buffer(EditLine *el) { wint_t **b; coord_t *c = &el->el_terminal.t_size; int i; b = el_malloc(sizeof(*b) * (size_t)(c->v + 1)); if (b == NULL) return NULL; for (i = 0; i < c->v; i++) { b[i] = el_malloc(sizeof(**b) * (size_t)(c->h + 1)); if (b[i] == NULL) { while (--i >= 0) el_free(b[i]); el_free(b); return NULL; } } b[c->v] = NULL; return b; } static void terminal_free_buffer(wint_t ***bp) { wint_t **b; wint_t **bufp; if (*bp == NULL) return; b = *bp; *bp = NULL; for (bufp = b; *bufp != NULL; bufp++) el_free(*bufp); el_free(b); } /* terminal_alloc_display(): * Allocate a new display. */ static int terminal_alloc_display(EditLine *el) { el->el_display = terminal_alloc_buffer(el); if (el->el_display == NULL) goto done; el->el_vdisplay = terminal_alloc_buffer(el); if (el->el_vdisplay == NULL) goto done; return 0; done: terminal_free_display(el); return -1; } /* terminal_free_display(): * Free the display buffers */ static void terminal_free_display(EditLine *el) { terminal_free_buffer(&el->el_display); terminal_free_buffer(&el->el_vdisplay); } /* terminal_move_to_line(): * move to line (first line == 0) * as efficiently as possible */ libedit_private void terminal_move_to_line(EditLine *el, int where) { int del; if (where == el->el_cursor.v) return; if (where > el->el_terminal.t_size.v) { #ifdef DEBUG_SCREEN (void) fprintf(el->el_errfile, "%s: where is ridiculous: %d\r\n", __func__, where); #endif /* DEBUG_SCREEN */ return; } if ((del = where - el->el_cursor.v) > 0) { while (del > 0) { if (EL_HAS_AUTO_MARGINS && el->el_display[el->el_cursor.v][0] != '\0') { size_t h = (size_t) (el->el_terminal.t_size.h - 1); for (; h > 0 && el->el_display[el->el_cursor.v][h] == MB_FILL_CHAR; h--) continue; /* move without newline */ terminal_move_to_char(el, (int)h); terminal_overwrite(el, &el->el_display [el->el_cursor.v][el->el_cursor.h], (size_t)(el->el_terminal.t_size.h - el->el_cursor.h)); /* updates Cursor */ del--; } else { if ((del > 1) && GoodStr(T_DO)) { terminal_tputs(el, tgoto(Str(T_DO), del, del), del); del = 0; } else { for (; del > 0; del--) terminal__putc(el, '\n'); /* because the \n will become \r\n */ el->el_cursor.h = 0; } } } } else { /* del < 0 */ if (GoodStr(T_UP) && (-del > 1 || !GoodStr(T_up))) terminal_tputs(el, tgoto(Str(T_UP), -del, -del), -del); else { if (GoodStr(T_up)) for (; del < 0; del++) terminal_tputs(el, Str(T_up), 1); } } el->el_cursor.v = where;/* now where is here */ } /* terminal_move_to_char(): * Move to the character position specified */ libedit_private void terminal_move_to_char(EditLine *el, int where) { int del, i; mc_again: if (where == el->el_cursor.h) return; if (where > el->el_terminal.t_size.h) { #ifdef DEBUG_SCREEN (void) fprintf(el->el_errfile, "%s: where is ridiculous: %d\r\n", __func__, where); #endif /* DEBUG_SCREEN */ return; } if (!where) { /* if where is first column */ terminal__putc(el, '\r'); /* do a CR */ el->el_cursor.h = 0; return; } del = where - el->el_cursor.h; if ((del < -4 || del > 4) && GoodStr(T_ch)) /* go there directly */ terminal_tputs(el, tgoto(Str(T_ch), where, where), where); else { if (del > 0) { /* moving forward */ if ((del > 4) && GoodStr(T_RI)) terminal_tputs(el, tgoto(Str(T_RI), del, del), del); else { /* if I can do tabs, use them */ if (EL_CAN_TAB) { if ((el->el_cursor.h & 0370) != (where & ~0x7) && (el->el_display[ el->el_cursor.v][where & 0370] != MB_FILL_CHAR) ) { /* if not within tab stop */ for (i = (el->el_cursor.h & 0370); i < (where & ~0x7); i += 8) terminal__putc(el, '\t'); /* then tab over */ el->el_cursor.h = where & ~0x7; } } /* * it's usually cheaper to just write the * chars, so we do. */ /* * NOTE THAT terminal_overwrite() WILL CHANGE * el->el_cursor.h!!! */ terminal_overwrite(el, &el->el_display[ el->el_cursor.v][el->el_cursor.h], (size_t)(where - el->el_cursor.h)); } } else { /* del < 0 := moving backward */ if ((-del > 4) && GoodStr(T_LE)) terminal_tputs(el, tgoto(Str(T_LE), -del, -del), -del); else { /* can't go directly there */ /* * if the "cost" is greater than the "cost" * from col 0 */ if (EL_CAN_TAB ? ((unsigned int)-del > (((unsigned int) where >> 3) + (where & 07))) : (-del > where)) { terminal__putc(el, '\r');/* do a CR */ el->el_cursor.h = 0; goto mc_again; /* and try again */ } for (i = 0; i < -del; i++) terminal__putc(el, '\b'); } } } el->el_cursor.h = where; /* now where is here */ } /* terminal_overwrite(): * Overstrike num characters * Assumes MB_FILL_CHARs are present to keep the column count correct */ libedit_private void terminal_overwrite(EditLine *el, const wchar_t *cp, size_t n) { if (n == 0) return; if (n > (size_t)el->el_terminal.t_size.h) { #ifdef DEBUG_SCREEN (void) fprintf(el->el_errfile, "%s: n is ridiculous: %zu\r\n", __func__, n); #endif /* DEBUG_SCREEN */ return; } do { /* terminal__putc() ignores any MB_FILL_CHARs */ terminal__putc(el, *cp++); el->el_cursor.h++; } while (--n); if (el->el_cursor.h >= el->el_terminal.t_size.h) { /* wrap? */ if (EL_HAS_AUTO_MARGINS) { /* yes */ el->el_cursor.h = 0; el->el_cursor.v++; if (EL_HAS_MAGIC_MARGINS) { /* force the wrap to avoid the "magic" * situation */ wchar_t c; if ((c = el->el_display[el->el_cursor.v] [el->el_cursor.h]) != '\0') { terminal_overwrite(el, &c, (size_t)1); while (el->el_display[el->el_cursor.v] [el->el_cursor.h] == MB_FILL_CHAR) el->el_cursor.h++; } else { terminal__putc(el, ' '); el->el_cursor.h = 1; } } } else /* no wrap, but cursor stays on screen */ el->el_cursor.h = el->el_terminal.t_size.h - 1; } } /* terminal_deletechars(): * Delete num characters */ libedit_private void terminal_deletechars(EditLine *el, int num) { if (num <= 0) return; if (!EL_CAN_DELETE) { #ifdef DEBUG_EDIT (void) fprintf(el->el_errfile, " ERROR: cannot delete \n"); #endif /* DEBUG_EDIT */ return; } if (num > el->el_terminal.t_size.h) { #ifdef DEBUG_SCREEN (void) fprintf(el->el_errfile, "%s: num is ridiculous: %d\r\n", __func__, num); #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. */ terminal_tputs(el, tgoto(Str(T_DC), num, num), num); return; } if (GoodStr(T_dm)) /* if I have delete mode */ terminal_tputs(el, Str(T_dm), 1); if (GoodStr(T_dc)) /* else do one at a time */ while (num--) terminal_tputs(el, Str(T_dc), 1); if (GoodStr(T_ed)) /* if I have delete mode */ terminal_tputs(el, Str(T_ed), 1); } /* terminal_insertwrite(): * Puts terminal in insert character mode or inserts num * characters in the line * Assumes MB_FILL_CHARs are present to keep column count correct */ libedit_private void terminal_insertwrite(EditLine *el, wchar_t *cp, int num) { if (num <= 0) return; if (!EL_CAN_INSERT) { #ifdef DEBUG_EDIT (void) fprintf(el->el_errfile, " ERROR: cannot insert \n"); #endif /* DEBUG_EDIT */ return; } if (num > el->el_terminal.t_size.h) { #ifdef DEBUG_SCREEN (void) fprintf(el->el_errfile, "%s: num is ridiculous: %d\r\n", __func__, num); #endif /* DEBUG_SCREEN */ return; } if (GoodStr(T_IC)) /* if I have multiple insert */ if ((num > 1) || !GoodStr(T_ic)) { /* if ic would be more expensive */ terminal_tputs(el, tgoto(Str(T_IC), num, num), num); terminal_overwrite(el, cp, (size_t)num); /* this updates el_cursor.h */ return; } if (GoodStr(T_im) && GoodStr(T_ei)) { /* if I have insert mode */ terminal_tputs(el, Str(T_im), 1); el->el_cursor.h += num; do terminal__putc(el, *cp++); while (--num); if (GoodStr(T_ip)) /* have to make num chars insert */ terminal_tputs(el, Str(T_ip), 1); terminal_tputs(el, Str(T_ei), 1); return; } do { if (GoodStr(T_ic)) /* have to make num chars insert */ terminal_tputs(el, Str(T_ic), 1); terminal__putc(el, *cp++); el->el_cursor.h++; if (GoodStr(T_ip)) /* have to make num chars insert */ terminal_tputs(el, Str(T_ip), 1); /* pad the inserted char */ } while (--num); } /* terminal_clear_EOL(): * clear to end of line. There are num characters to clear */ libedit_private void terminal_clear_EOL(EditLine *el, int num) { int i; if (EL_CAN_CEOL && GoodStr(T_ce)) terminal_tputs(el, Str(T_ce), 1); else { for (i = 0; i < num; i++) terminal__putc(el, ' '); el->el_cursor.h += num; /* have written num spaces */ } } /* terminal_clear_screen(): * Clear the screen */ libedit_private void terminal_clear_screen(EditLine *el) { /* clear the whole screen and home */ if (GoodStr(T_cl)) /* send the clear screen code */ terminal_tputs(el, Str(T_cl), Val(T_li)); else if (GoodStr(T_ho) && GoodStr(T_cd)) { terminal_tputs(el, Str(T_ho), Val(T_li)); /* home */ /* clear to bottom of screen */ terminal_tputs(el, Str(T_cd), Val(T_li)); } else { terminal__putc(el, '\r'); terminal__putc(el, '\n'); } } /* terminal_beep(): * Beep the way the terminal wants us */ libedit_private void terminal_beep(EditLine *el) { if (GoodStr(T_bl)) /* what termcap says we should use */ terminal_tputs(el, Str(T_bl), 1); else terminal__putc(el, '\007'); /* an ASCII bell; ^G */ } libedit_private void terminal_get(EditLine *el, const char **term) { *term = el->el_terminal.t_name; } /* terminal_set(): * Read in the terminal capabilities from the requested terminal */ libedit_private int terminal_set(EditLine *el, const char *term) { int i; char buf[TC_BUFSIZE]; char *area; const struct termcapstr *t; sigset_t oset, nset; int lins, cols; (void) sigemptyset(&nset); (void) sigaddset(&nset, SIGWINCH); (void) sigprocmask(SIG_BLOCK, &nset, &oset); area = buf; if (term == NULL) term = getenv("TERM"); if (!term || !term[0]) term = "dumb"; if (strcmp(term, "emacs") == 0) el->el_flags |= EDIT_DISABLED; (void) memset(el->el_terminal.t_cap, 0, TC_BUFSIZE); i = tgetent(el->el_terminal.t_cap, term); if (i <= 0) { if (i == -1) (void) fprintf(el->el_errfile, "Cannot read termcap database;\n"); else if (i == 0) (void) fprintf(el->el_errfile, "No entry for terminal type \"%s\";\n", term); (void) fprintf(el->el_errfile, "using dumb terminal settings.\n"); Val(T_co) = 80; /* do a dumb terminal */ Val(T_pt) = Val(T_km) = Val(T_li) = 0; Val(T_xt) = Val(T_MT); for (t = tstr; t->name != NULL; t++) terminal_alloc(el, t, NULL); } else { /* auto/magic margins */ Val(T_am) = tgetflag("am"); Val(T_xn) = tgetflag("xn"); /* Can we tab */ Val(T_pt) = tgetflag("pt"); Val(T_xt) = tgetflag("xt"); /* do we have a meta? */ Val(T_km) = tgetflag("km"); Val(T_MT) = tgetflag("MT"); /* Get the size */ Val(T_co) = tgetnum("co"); Val(T_li) = tgetnum("li"); for (t = tstr; t->name != NULL; t++) { /* XXX: some systems' tgetstr needs non const */ terminal_alloc(el, t, tgetstr(strchr(t->name, *t->name), &area)); } } if (Val(T_co) < 2) Val(T_co) = 80; /* just in case */ if (Val(T_li) < 1) Val(T_li) = 24; el->el_terminal.t_size.v = Val(T_co); el->el_terminal.t_size.h = Val(T_li); terminal_setflags(el); /* get the correct window size */ (void) terminal_get_size(el, &lins, &cols); if (terminal_change_size(el, lins, cols) == -1) return -1; (void) sigprocmask(SIG_SETMASK, &oset, NULL); terminal_bind_arrow(el); el->el_terminal.t_name = term; return i <= 0 ? -1 : 0; } /* terminal_get_size(): * Return the new window size in lines and cols, and * true if the size was changed. */ libedit_private int terminal_get_size(EditLine *el, int *lins, int *cols) { *cols = Val(T_co); *lins = Val(T_li); #ifdef TIOCGWINSZ { struct winsize ws; if (ioctl(el->el_infd, TIOCGWINSZ, &ws) != -1) { if (ws.ws_col) *cols = ws.ws_col; if (ws.ws_row) *lins = ws.ws_row; } } #endif #ifdef TIOCGSIZE { struct ttysize ts; if (ioctl(el->el_infd, TIOCGSIZE, &ts) != -1) { if (ts.ts_cols) *cols = ts.ts_cols; if (ts.ts_lines) *lins = ts.ts_lines; } } #endif return Val(T_co) != *cols || Val(T_li) != *lins; } /* terminal_change_size(): * Change the size of the terminal */ libedit_private int terminal_change_size(EditLine *el, int lins, int cols) { /* * Just in case */ Val(T_co) = (cols < 2) ? 80 : cols; Val(T_li) = (lins < 1) ? 24 : lins; /* re-make display buffers */ if (terminal_rebuffer_display(el) == -1) return -1; re_clear_display(el); return 0; } /* terminal_init_arrow(): * Initialize the arrow key bindings from termcap */ static void terminal_init_arrow(EditLine *el) { funckey_t *arrow = el->el_terminal.t_fkey; arrow[A_K_DN].name = L"down"; arrow[A_K_DN].key = T_kd; arrow[A_K_DN].fun.cmd = ED_NEXT_HISTORY; arrow[A_K_DN].type = XK_CMD; arrow[A_K_UP].name = L"up"; arrow[A_K_UP].key = T_ku; arrow[A_K_UP].fun.cmd = ED_PREV_HISTORY; arrow[A_K_UP].type = XK_CMD; arrow[A_K_LT].name = L"left"; arrow[A_K_LT].key = T_kl; arrow[A_K_LT].fun.cmd = ED_PREV_CHAR; arrow[A_K_LT].type = XK_CMD; arrow[A_K_RT].name = L"right"; arrow[A_K_RT].key = T_kr; arrow[A_K_RT].fun.cmd = ED_NEXT_CHAR; arrow[A_K_RT].type = XK_CMD; arrow[A_K_HO].name = L"home"; arrow[A_K_HO].key = T_kh; arrow[A_K_HO].fun.cmd = ED_MOVE_TO_BEG; arrow[A_K_HO].type = XK_CMD; arrow[A_K_EN].name = L"end"; arrow[A_K_EN].key = T_at7; arrow[A_K_EN].fun.cmd = ED_MOVE_TO_END; arrow[A_K_EN].type = XK_CMD; arrow[A_K_DE].name = L"delete"; arrow[A_K_DE].key = T_kD; arrow[A_K_DE].fun.cmd = ED_DELETE_NEXT_CHAR; arrow[A_K_DE].type = XK_CMD; } /* terminal_reset_arrow(): * Reset arrow key bindings */ static void terminal_reset_arrow(EditLine *el) { funckey_t *arrow = el->el_terminal.t_fkey; static const wchar_t strA[] = L"\033[A"; static const wchar_t strB[] = L"\033[B"; static const wchar_t strC[] = L"\033[C"; static const wchar_t strD[] = L"\033[D"; static const wchar_t strH[] = L"\033[H"; static const wchar_t strF[] = L"\033[F"; static const wchar_t stOA[] = L"\033OA"; static const wchar_t stOB[] = L"\033OB"; static const wchar_t stOC[] = L"\033OC"; static const wchar_t stOD[] = L"\033OD"; static const wchar_t stOH[] = L"\033OH"; static const wchar_t stOF[] = L"\033OF"; keymacro_add(el, strA, &arrow[A_K_UP].fun, arrow[A_K_UP].type); keymacro_add(el, strB, &arrow[A_K_DN].fun, arrow[A_K_DN].type); keymacro_add(el, strC, &arrow[A_K_RT].fun, arrow[A_K_RT].type); keymacro_add(el, strD, &arrow[A_K_LT].fun, arrow[A_K_LT].type); keymacro_add(el, strH, &arrow[A_K_HO].fun, arrow[A_K_HO].type); keymacro_add(el, strF, &arrow[A_K_EN].fun, arrow[A_K_EN].type); keymacro_add(el, stOA, &arrow[A_K_UP].fun, arrow[A_K_UP].type); keymacro_add(el, stOB, &arrow[A_K_DN].fun, arrow[A_K_DN].type); keymacro_add(el, stOC, &arrow[A_K_RT].fun, arrow[A_K_RT].type); keymacro_add(el, stOD, &arrow[A_K_LT].fun, arrow[A_K_LT].type); keymacro_add(el, stOH, &arrow[A_K_HO].fun, arrow[A_K_HO].type); keymacro_add(el, stOF, &arrow[A_K_EN].fun, arrow[A_K_EN].type); if (el->el_map.type != MAP_VI) return; keymacro_add(el, &strA[1], &arrow[A_K_UP].fun, arrow[A_K_UP].type); keymacro_add(el, &strB[1], &arrow[A_K_DN].fun, arrow[A_K_DN].type); keymacro_add(el, &strC[1], &arrow[A_K_RT].fun, arrow[A_K_RT].type); keymacro_add(el, &strD[1], &arrow[A_K_LT].fun, arrow[A_K_LT].type); keymacro_add(el, &strH[1], &arrow[A_K_HO].fun, arrow[A_K_HO].type); keymacro_add(el, &strF[1], &arrow[A_K_EN].fun, arrow[A_K_EN].type); keymacro_add(el, &stOA[1], &arrow[A_K_UP].fun, arrow[A_K_UP].type); keymacro_add(el, &stOB[1], &arrow[A_K_DN].fun, arrow[A_K_DN].type); keymacro_add(el, &stOC[1], &arrow[A_K_RT].fun, arrow[A_K_RT].type); keymacro_add(el, &stOD[1], &arrow[A_K_LT].fun, arrow[A_K_LT].type); keymacro_add(el, &stOH[1], &arrow[A_K_HO].fun, arrow[A_K_HO].type); keymacro_add(el, &stOF[1], &arrow[A_K_EN].fun, arrow[A_K_EN].type); } /* terminal_set_arrow(): * Set an arrow key binding */ libedit_private int terminal_set_arrow(EditLine *el, const wchar_t *name, keymacro_value_t *fun, int type) { funckey_t *arrow = el->el_terminal.t_fkey; int i; for (i = 0; i < A_K_NKEYS; i++) if (wcscmp(name, arrow[i].name) == 0) { arrow[i].fun = *fun; arrow[i].type = type; return 0; } return -1; } /* terminal_clear_arrow(): * Clear an arrow key binding */ libedit_private int terminal_clear_arrow(EditLine *el, const wchar_t *name) { funckey_t *arrow = el->el_terminal.t_fkey; int i; for (i = 0; i < A_K_NKEYS; i++) if (wcscmp(name, arrow[i].name) == 0) { arrow[i].type = XK_NOD; return 0; } return -1; } /* terminal_print_arrow(): * Print the arrow key bindings */ libedit_private void terminal_print_arrow(EditLine *el, const wchar_t *name) { int i; funckey_t *arrow = el->el_terminal.t_fkey; for (i = 0; i < A_K_NKEYS; i++) if (*name == '\0' || wcscmp(name, arrow[i].name) == 0) if (arrow[i].type != XK_NOD) keymacro_kprint(el, arrow[i].name, &arrow[i].fun, arrow[i].type); } /* terminal_bind_arrow(): * Bind the arrow keys */ libedit_private void terminal_bind_arrow(EditLine *el) { el_action_t *map; const el_action_t *dmap; int i, j; char *p; funckey_t *arrow = el->el_terminal.t_fkey; /* Check if the components needed are initialized */ if (el->el_terminal.t_buf == NULL || el->el_map.key == NULL) return; map = el->el_map.type == MAP_VI ? el->el_map.alt : el->el_map.key; dmap = el->el_map.type == MAP_VI ? el->el_map.vic : el->el_map.emacs; terminal_reset_arrow(el); for (i = 0; i < A_K_NKEYS; i++) { wchar_t wt_str[VISUAL_WIDTH_MAX]; wchar_t *px; size_t n; p = el->el_terminal.t_str[arrow[i].key]; if (!p || !*p) continue; for (n = 0; n < VISUAL_WIDTH_MAX && p[n]; ++n) wt_str[n] = p[n]; while (n < VISUAL_WIDTH_MAX) wt_str[n++] = '\0'; px = wt_str; 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 * ED_SEQUENCE_LEAD_IN * 2. They are single arrow keys pointing to an * unassigned key. */ if (arrow[i].type == XK_NOD) keymacro_clear(el, map, px); else { if (p[1] && (dmap[j] == map[j] || map[j] == ED_SEQUENCE_LEAD_IN)) { keymacro_add(el, px, &arrow[i].fun, arrow[i].type); map[j] = ED_SEQUENCE_LEAD_IN; } else if (map[j] == ED_UNASSIGNED) { keymacro_clear(el, map, px); if (arrow[i].type == XK_CMD) map[j] = arrow[i].fun.cmd; else keymacro_add(el, px, &arrow[i].fun, arrow[i].type); } } } } /* terminal_putc(): * Add a character */ static int terminal_putc(int c) { if (terminal_outfile == NULL) return -1; return fputc(c, terminal_outfile); } static void terminal_tputs(EditLine *el, const char *cap, int affcnt) { #ifdef _REENTRANT pthread_mutex_lock(&terminal_mutex); #endif terminal_outfile = el->el_outfile; (void)tputs(cap, affcnt, terminal_putc); #ifdef _REENTRANT pthread_mutex_unlock(&terminal_mutex); #endif } /* terminal__putc(): * Add a character */ libedit_private int terminal__putc(EditLine *el, wint_t c) { char buf[MB_LEN_MAX +1]; ssize_t i; if (c == (wint_t)MB_FILL_CHAR) return 0; if (c & EL_LITERAL) return fputs(literal_get(el, c), el->el_outfile); i = ct_encode_char(buf, (size_t)MB_LEN_MAX, c); if (i <= 0) return (int)i; buf[i] = '\0'; return fputs(buf, el->el_outfile); } /* terminal__flush(): * Flush output */ libedit_private void terminal__flush(EditLine *el) { (void) fflush(el->el_outfile); } /* terminal_writec(): * Write the given character out, in a human readable form */ libedit_private void terminal_writec(EditLine *el, wint_t c) { wchar_t visbuf[VISUAL_WIDTH_MAX +1]; ssize_t vcnt = ct_visual_char(visbuf, VISUAL_WIDTH_MAX, c); if (vcnt < 0) vcnt = 0; visbuf[vcnt] = '\0'; terminal_overwrite(el, visbuf, (size_t)vcnt); terminal__flush(el); } /* terminal_telltc(): * Print the current termcap characteristics */ libedit_private int /*ARGSUSED*/ terminal_telltc(EditLine *el, int argc __attribute__((__unused__)), const wchar_t **argv __attribute__((__unused__))) { const struct termcapstr *t; char **ts; (void) fprintf(el->el_outfile, "\n\tYour terminal has the\n"); (void) fprintf(el->el_outfile, "\tfollowing characteristics:\n\n"); (void) fprintf(el->el_outfile, "\tIt has %d columns and %d lines\n", Val(T_co), Val(T_li)); (void) fprintf(el->el_outfile, "\tIt has %s meta key\n", EL_HAS_META ? "a" : "no"); (void) fprintf(el->el_outfile, "\tIt can%suse tabs\n", EL_CAN_TAB ? " " : "not "); (void) fprintf(el->el_outfile, "\tIt %s automatic margins\n", EL_HAS_AUTO_MARGINS ? "has" : "does not have"); if (EL_HAS_AUTO_MARGINS) (void) fprintf(el->el_outfile, "\tIt %s magic margins\n", EL_HAS_MAGIC_MARGINS ? "has" : "does not have"); for (t = tstr, ts = el->el_terminal.t_str; t->name != NULL; t++, ts++) { const char *ub; if (*ts && **ts) { ub = ct_encode_string(ct_visual_string( ct_decode_string(*ts, &el->el_scratch), &el->el_visual), &el->el_scratch); } else { ub = "(empty)"; } (void) fprintf(el->el_outfile, "\t%25s (%s) == %s\n", t->long_name, t->name, ub); } (void) fputc('\n', el->el_outfile); return 0; } /* terminal_settc(): * Change the current terminal characteristics */ libedit_private int /*ARGSUSED*/ terminal_settc(EditLine *el, int argc __attribute__((__unused__)), const wchar_t **argv) { const struct termcapstr *ts; const struct termcapval *tv; char what[8], how[8]; if (argv == NULL || argv[1] == NULL || argv[2] == NULL) return -1; strncpy(what, ct_encode_string(argv[1], &el->el_scratch), sizeof(what)); what[sizeof(what) - 1] = '\0'; strncpy(how, ct_encode_string(argv[2], &el->el_scratch), sizeof(how)); how[sizeof(how) - 1] = '\0'; /* * Do the strings first */ for (ts = tstr; ts->name != NULL; ts++) if (strcmp(ts->name, what) == 0) break; if (ts->name != NULL) { terminal_alloc(el, ts, how); terminal_setflags(el); return 0; } /* * Do the numeric ones second */ for (tv = tval; tv->name != NULL; tv++) if (strcmp(tv->name, what) == 0) break; if (tv->name != NULL) return -1; if (tv == &tval[T_pt] || tv == &tval[T_km] || tv == &tval[T_am] || tv == &tval[T_xn]) { if (strcmp(how, "yes") == 0) el->el_terminal.t_val[tv - tval] = 1; else if (strcmp(how, "no") == 0) el->el_terminal.t_val[tv - tval] = 0; else { (void) fprintf(el->el_errfile, "%ls: Bad value `%s'.\n", argv[0], how); return -1; } terminal_setflags(el); if (terminal_change_size(el, Val(T_li), Val(T_co)) == -1) return -1; return 0; } else { long i; char *ep; i = strtol(how, &ep, 10); if (*ep != '\0') { (void) fprintf(el->el_errfile, "%ls: Bad value `%s'.\n", argv[0], how); return -1; } el->el_terminal.t_val[tv - tval] = (int) i; el->el_terminal.t_size.v = Val(T_co); el->el_terminal.t_size.h = Val(T_li); if (tv == &tval[T_co] || tv == &tval[T_li]) if (terminal_change_size(el, Val(T_li), Val(T_co)) == -1) return -1; return 0; } } /* terminal_gettc(): * Get the current terminal characteristics */ libedit_private int /*ARGSUSED*/ terminal_gettc(EditLine *el, int argc __attribute__((__unused__)), char **argv) { const struct termcapstr *ts; const struct termcapval *tv; char *what; void *how; if (argv == NULL || argv[1] == NULL || argv[2] == NULL) return -1; what = argv[1]; how = argv[2]; /* * Do the strings first */ for (ts = tstr; ts->name != NULL; ts++) if (strcmp(ts->name, what) == 0) break; if (ts->name != NULL) { *(char **)how = el->el_terminal.t_str[ts - tstr]; return 0; } /* * Do the numeric ones second */ for (tv = tval; tv->name != NULL; tv++) if (strcmp(tv->name, what) == 0) break; if (tv->name == NULL) return -1; if (tv == &tval[T_pt] || tv == &tval[T_km] || tv == &tval[T_am] || tv == &tval[T_xn]) { static char yes[] = "yes"; static char no[] = "no"; if (el->el_terminal.t_val[tv - tval]) *(char **)how = yes; else *(char **)how = no; return 0; } else { *(int *)how = el->el_terminal.t_val[tv - tval]; return 0; } } /* terminal_echotc(): * Print the termcap string out with variable substitution */ libedit_private int /*ARGSUSED*/ terminal_echotc(EditLine *el, int argc __attribute__((__unused__)), const wchar_t **argv) { char *cap, *scap; wchar_t *ep; int arg_need, arg_cols, arg_rows; int verbose = 0, silent = 0; char *area; static const char fmts[] = "%s\n", fmtd[] = "%d\n"; const struct termcapstr *t; char buf[TC_BUFSIZE]; long i; area = buf; if (argv == NULL || argv[1] == NULL) return -1; argv++; if (argv[0][0] == '-') { switch (argv[0][1]) { case 'v': verbose = 1; break; case 's': silent = 1; break; default: /* stderror(ERR_NAME | ERR_TCUSAGE); */ break; } argv++; } if (!*argv || *argv[0] == '\0') return 0; if (wcscmp(*argv, L"tabs") == 0) { (void) fprintf(el->el_outfile, fmts, EL_CAN_TAB ? "yes" : "no"); return 0; } else if (wcscmp(*argv, L"meta") == 0) { (void) fprintf(el->el_outfile, fmts, Val(T_km) ? "yes" : "no"); return 0; } else if (wcscmp(*argv, L"xn") == 0) { (void) fprintf(el->el_outfile, fmts, EL_HAS_MAGIC_MARGINS ? "yes" : "no"); return 0; } else if (wcscmp(*argv, L"am") == 0) { (void) fprintf(el->el_outfile, fmts, EL_HAS_AUTO_MARGINS ? "yes" : "no"); return 0; } else if (wcscmp(*argv, L"baud") == 0) { (void) fprintf(el->el_outfile, fmtd, (int)el->el_tty.t_speed); return 0; } else if (wcscmp(*argv, L"rows") == 0 || wcscmp(*argv, L"lines") == 0) { (void) fprintf(el->el_outfile, fmtd, Val(T_li)); return 0; } else if (wcscmp(*argv, L"cols") == 0) { (void) fprintf(el->el_outfile, fmtd, Val(T_co)); return 0; } /* * Try to use our local definition first */ scap = NULL; for (t = tstr; t->name != NULL; t++) if (strcmp(t->name, ct_encode_string(*argv, &el->el_scratch)) == 0) { scap = el->el_terminal.t_str[t - tstr]; break; } if (t->name == NULL) { /* XXX: some systems' tgetstr needs non const */ scap = tgetstr(ct_encode_string(*argv, &el->el_scratch), &area); } if (!scap || scap[0] == '\0') { if (!silent) (void) fprintf(el->el_errfile, "echotc: Termcap parameter `%ls' not found.\n", *argv); return -1; } /* * 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) (void) fprintf(el->el_errfile, "echotc: Warning: unknown termcap %% `%c'.\n", *cap); /* This is bad, but I won't complain */ break; } switch (arg_need) { case 0: argv++; if (*argv && *argv[0]) { if (!silent) (void) fprintf(el->el_errfile, "echotc: Warning: Extra argument `%ls'.\n", *argv); return -1; } terminal_tputs(el, scap, 1); break; case 1: argv++; if (!*argv || *argv[0] == '\0') { if (!silent) (void) fprintf(el->el_errfile, "echotc: Warning: Missing argument.\n"); return -1; } arg_cols = 0; i = wcstol(*argv, &ep, 10); if (*ep != '\0' || i < 0) { if (!silent) (void) fprintf(el->el_errfile, "echotc: Bad value `%ls' for rows.\n", *argv); return -1; } arg_rows = (int) i; argv++; if (*argv && *argv[0]) { if (!silent) (void) fprintf(el->el_errfile, "echotc: Warning: Extra argument `%ls" "'.\n", *argv); return -1; } terminal_tputs(el, tgoto(scap, arg_cols, arg_rows), 1); break; default: /* This is wrong, but I will ignore it... */ if (verbose) (void) fprintf(el->el_errfile, "echotc: Warning: Too many required arguments (%d).\n", arg_need); /* FALLTHROUGH */ case 2: argv++; if (!*argv || *argv[0] == '\0') { if (!silent) (void) fprintf(el->el_errfile, "echotc: Warning: Missing argument.\n"); return -1; } i = wcstol(*argv, &ep, 10); if (*ep != '\0' || i < 0) { if (!silent) (void) fprintf(el->el_errfile, "echotc: Bad value `%ls' for cols.\n", *argv); return -1; } arg_cols = (int) i; argv++; if (!*argv || *argv[0] == '\0') { if (!silent) (void) fprintf(el->el_errfile, "echotc: Warning: Missing argument.\n"); return -1; } i = wcstol(*argv, &ep, 10); if (*ep != '\0' || i < 0) { if (!silent) (void) fprintf(el->el_errfile, "echotc: Bad value `%ls' for rows.\n", *argv); return -1; } arg_rows = (int) i; if (*ep != '\0') { if (!silent) (void) fprintf(el->el_errfile, "echotc: Bad value `%ls'.\n", *argv); return -1; } argv++; if (*argv && *argv[0]) { if (!silent) (void) fprintf(el->el_errfile, "echotc: Warning: Extra argument `%ls" "'.\n", *argv); return -1; } terminal_tputs(el, tgoto(scap, arg_cols, arg_rows), arg_rows); break; } return 0; }