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- /* vi:sw=4:ts=4:
- *
- * term.c -- VIM - Vi IMitation
- *
- * primitive termcap support added
- *
- * NOTE: padding and variable substitution is not performed,
- * when compiling without TERMCAP, we use tputs() and tgoto() dummies.
- *
- * 14.6.92
- */
-
- #include "vim.h"
- #include "globals.h"
- #include "param.h"
- #include "proto.h"
- #ifdef TERMCAP
- # ifdef linux
- # include <termcap.h>
- # define TPUTSFUNCAST (outfuntype)
- # else
- # define TPUTSFUNCAST
- # ifdef AMIGA
- # include "proto/termlib.pro"
- # endif
- # endif
- #endif
-
- /* buffer size for termcap entry */
- #ifdef linux
- # define TBUFSZ 2048
- #else
- # define TBUFSZ 1024
- #endif
-
- #ifdef DEBUG
- # define TTEST(a) debug1("%s: ", "a"); if (a) {debug2("%02x %s\n", *a, a + 1);} else debug("NULL\n");
- #endif
-
- static void parse_builtin_tcap __ARGS((Tcarr *tc, char *s));
-
- /*
- * Builtin_tcaps must always contain DFLT_TCAP as the first entry!
- * DFLT_TCAP is used, when no terminal is specified with -T option or $TERM.
- * The entries are compact, therefore they normally are included even when
- * TERMCAP is defined.
- * When TERMCAP is defined, the builtin entries can be accessed with
- * "builtin_amiga", "builtin_ansi", "builtin_debug", etc.
- */
- static char *builtin_tcaps[] =
- {
- #ifndef NO_BUILTIN_TCAPS
- DFLT_TCAP, /* almost allways included */
- # if !defined(UNIX) && (defined(ALL_BUILTIN_TCAPS) || defined(SOME_BUILTIN_TCAPS))
- ANSI_TCAP, /* default for unix */
- # endif
- # if !defined(AMIGA) && (defined(ALL_BUILTIN_TCAPS) || defined(SOME_BUILTIN_TCAPS))
- AMIGA_TCAP, /* default for amiga */
- # endif
- # if !defined(MSDOS) && (defined(ALL_BUILTIN_TCAPS) || defined(SOME_BUILTIN_TCAPS))
- PCTERM_TCAP, /* default for MSdos */
- # endif
- # if !defined(ATARI) && defined(ALL_BUILTIN_TCAPS)
- ATARI_TCAP, /* default for Atari */
- # endif
- # if defined(UNIX) || defined(ALL_BUILTIN_TCAPS) || defined(SOME_BUILTIN_TCAPS)
- XTERM_TCAP, /* always included on unix */
- # endif
- # ifdef ALL_BUILTIN_TCAPS
- VT52_TCAP,
- # endif
- # if defined(DEBUG) || defined(ALL_BUILTIN_TCAPS)
- DEBUG_TCAP, /* always included when debugging */
- # endif
- #else /* NO_BUILTIN_TCAPS */
- "dump\0\0\0",
- #endif /* NO_BUILTIN_TCAPS */
- NULL,
- };
-
- /*
- * Term_strings contains currently used terminal strings.
- * It is initialized with the default values by parse_builtin_tcap().
- * The values can be changed by setting the parameter with the same name.
- */
- Tcarr term_strings;
-
- /*
- * Parsing of the builtin termcap entries.
- * The terminal's name is not set, as this is already done in termcapinit().
- * Chop builtin termcaps, string entries are already '\0' terminated.
- * not yet implemented:
- * boolean entries could be empty strings;
- * numeric entries would need a flag (e.g. high bit of the skip byte),
- * so that parse_builtin_tcap can handle them.
- */
- static void
- parse_builtin_tcap(tc, s)
- Tcarr *tc;
- char *s;
- {
- char **p = &tc->t_name;
-
- p++;
- for (;;)
- {
- while (*s++)
- ;
- p += *s++;
- if (!*s)
- return;
- *p++ = s;
- }
- }
-
- #ifdef TERMCAP
- # ifndef linux /* included in <termlib.h> */
- # ifndef AMIGA /* included in proto/termlib.pro */
- int tgetent();
- int tgetnum();
- char *tgetstr();
- int tputs();
- # endif /* AMIGA */
- extern short ospeed;
- # endif /* linux */
- extern char *UP, *BC, PC;
- #endif /* TERMCAP */
-
- void
- set_term(term)
- char *term;
- {
- char **p = builtin_tcaps;
- #ifdef TERMCAP
- int builtin = 0;
- #endif
- int width = 0, height = 0;
-
- clear_termparam(); /* clear old parameters */
- if (!strncmp(term, "builtin_", (size_t)8))
- {
- term += 8;
- #ifdef TERMCAP
- builtin = 1;
- #endif
- }
- #ifdef TERMCAP
- else
- {
- for (;;)
- {
- char *p;
- static char tstrbuf[TBUFSZ];
- char tbuf[TBUFSZ];
- char *tp = tstrbuf;
- int i;
-
- i = tgetent(tbuf, term);
- if (i == -1)
- {
- emsg("Cannot open termcap file");
- builtin = 1;
- break;
- }
- if (i == 0)
- {
- emsg("terminal entry not found");
- builtin = 1;
- break;
- }
-
- /* output strings */
- T_EL = tgetstr("ce", &tp);
- T_IL = tgetstr("al", &tp);
- T_CIL = tgetstr("AL", &tp);
- T_DL = tgetstr("dl", &tp);
- T_CDL = tgetstr("DL", &tp);
- T_ED = tgetstr("cl", &tp);
- T_CI = tgetstr("vi", &tp);
- T_CV = tgetstr("ve", &tp);
- T_TP = tgetstr("me", &tp);
- T_TI = tgetstr("mr", &tp);
- T_CM = tgetstr("cm", &tp);
- T_SR = tgetstr("sr", &tp);
- T_CRI = tgetstr("RI", &tp);
- T_VB = tgetstr("vb", &tp);
- T_KS = tgetstr("ks", &tp);
- T_KE = tgetstr("ke", &tp);
-
- /* key codes */
- term_strings.t_ku = tgetstr("ku", &tp);
- term_strings.t_kd = tgetstr("kd", &tp);
- term_strings.t_kl = tgetstr("kl", &tp);
- term_strings.t_kr = tgetstr("kr", &tp);
- /* term_strings.t_sku = tgetstr("", &tp); termcap code unknown */
- /* term_strings.t_skd = tgetstr("", &tp); termcap code unknown */
- term_strings.t_sku = NULL;
- term_strings.t_skd = NULL;
- term_strings.t_skl = tgetstr("#4", &tp);
- term_strings.t_skr = tgetstr("%i", &tp);
- term_strings.t_f1 = tgetstr("k1", &tp);
- term_strings.t_f2 = tgetstr("k2", &tp);
- term_strings.t_f3 = tgetstr("k3", &tp);
- term_strings.t_f4 = tgetstr("k4", &tp);
- term_strings.t_f5 = tgetstr("k5", &tp);
- term_strings.t_f6 = tgetstr("k6", &tp);
- term_strings.t_f7 = tgetstr("k7", &tp);
- term_strings.t_f8 = tgetstr("k8", &tp);
- term_strings.t_f9 = tgetstr("k9", &tp);
- term_strings.t_f10 = tgetstr("k;", &tp);
- term_strings.t_sf1 = tgetstr("F1", &tp); /* really function keys 11-20 */
- term_strings.t_sf2 = tgetstr("F2", &tp);
- term_strings.t_sf3 = tgetstr("F3", &tp);
- term_strings.t_sf4 = tgetstr("F4", &tp);
- term_strings.t_sf5 = tgetstr("F5", &tp);
- term_strings.t_sf6 = tgetstr("F6", &tp);
- term_strings.t_sf7 = tgetstr("F7", &tp);
- term_strings.t_sf8 = tgetstr("F8", &tp);
- term_strings.t_sf9 = tgetstr("F9", &tp);
- term_strings.t_sf10 = tgetstr("FA", &tp);
- term_strings.t_help = tgetstr("%1", &tp);
- term_strings.t_undo = tgetstr("&8", &tp);
-
- height = tgetnum("li");
- width = tgetnum("co");
-
- BC = tgetstr("bc", &tp);
- UP = tgetstr("up", &tp);
- p = tgetstr("pc", &tp);
- if (p)
- PC = *p;
- ospeed = 0;
- break;
- }
- }
- if (builtin)
- #endif
- {
- while (*p && strcmp(term, *p))
- p++;
- if (!*p)
- {
- fprintf(stderr, "'%s' not builtin. Available terminals are:\n", term);
- for (p = builtin_tcaps; *p; p++)
- fprintf(stderr, "\t%s\n", *p);
- sleep(2);
- fprintf(stderr, "defaulting to '%s'\n", *builtin_tcaps);
- sleep(2);
- p = builtin_tcaps;
- if (term_strings.t_name)
- free(term_strings.t_name);
- term_strings.t_name = strsave(term = *p);
- }
- parse_builtin_tcap(&term_strings, *p);
- }
- #if defined(AMIGA) || defined(MSDOS)
- /* DFLT_TCAP indicates that it is the machine console. */
- if (strcmp(term, *builtin_tcaps))
- term_console = FALSE;
- else
- term_console = TRUE;
- #endif
- ttest(TRUE);
- /* display initial screen after ttest() checking. jw. */
- if (width <= 0 || height <= 0)
- {
- /* termcap failed to report size */
- /* set defaults, in case mch_get_winsize also fails */
- width = 80;
- height = 24;
- }
- set_winsize(width, height, FALSE);
- }
-
- #ifndef TERMCAP
-
- static char *titoa __PARMS((int));
-
- /*
- * minimal tgoto() implementation.
- * no padding and we only parse for %i %d and %+char
- */
-
- static char *
- titoa(i)
- int i;
- {
- static char buf[10];
- char *p;
-
- p = buf + 9;
- *p = '\0';
- do
- {
- --p;
- *p = i % 10 + '0';
- i /= 10;
- }
- while (i > 0 && p > buf);
- return p;
- }
-
- char *
- tgoto(cm, x, y)
- char *cm;
- int x, y;
- {
- static char buf[30];
- char *p, *s, *e;
-
- if (!cm)
- return "OOPS";
- e = buf + 29;
- for (s = buf; s < e && *cm; cm++)
- {
- if (*cm != '%')
- {
- *s++ = *cm;
- continue;
- }
- switch (*++cm)
- {
- case 'd':
- p = titoa(y);
- y = x;
- while (*p)
- *s++ = *p++;
- break;
- case 'i':
- x++;
- y++;
- break;
- case '+':
- *s++ = (char)(*++cm + y);
- y = x;
- break;
- case '%':
- *s++ = *cm;
- break;
- default:
- return "OOPS";
- }
- }
- *s = '\0';
- return buf;
- }
-
- #endif /* TERMCAP */
-
- /*
- * termcapinit is called from main() to initialize the terminal
- * the optional argument is given with the -T command line option
- */
- void
- termcapinit(term)
- char *term;
- {
- if (!term)
- term = getenv("TERM");
- if (!term || !*term)
- term = *builtin_tcaps;
- term_strings.t_name = strsave(term);
- set_term(term);
- }
-
- /*
- * a never-padding outstr.
- * use this whenever you don't want to run the string through tputs.
- * tputs above is harmless, but tputs from the termcap library
- * is likely to strip off leading digits, that it mistakes for padding
- * information. (jw)
- */
- void
- outstrn(s)
- char *s;
- {
- while (*s)
- outchar(*s++);
- }
-
- #ifndef MSDOS /* there is a special version of outstr() in msdos.c */
- /*
- * outstr(s): put a string character at a time into the output buffer.
- * If TERMCAP is defined use the termcap parser. (jw)
- */
- void
- outstr(s)
- register char *s;
- {
- if (s)
- #ifdef TERMCAP
- tputs(s, 1, TPUTSFUNCAST outchar);
- #else
- while (*s)
- outchar(*s++);
- #endif
- }
- #endif /* MSDOS */
-
- /*
- * cursor positioning using termcap parser. (jw)
- */
- void
- windgoto(row, col)
- int row;
- int col;
- {
- #ifdef TERMCAP
- tputs(tgoto(T_CM, col, row), 1, TPUTSFUNCAST outchar);
- #else
- outstr(tgoto(T_CM, col, row));
- #endif
- }
-
- /*
- * Set cursor to current position.
- * Should be optimized for minimal terminal output.
- */
-
- void
- setcursor()
- {
- if (!RedrawingDisabled)
- windgoto(Cursrow, Curscol);
- }
-
- void
- ttest(pairs)
- int pairs;
- {
- char buf[70];
- char *s = "terminal capability %s required.\n";
- char *t = NULL;
-
- #ifdef TTEST
- TTEST(T_EL);
- TTEST(T_IL);
- TTEST(T_CIL);
- TTEST(T_DL);
- TTEST(T_CDL);
- TTEST(T_ED);
- TTEST(T_CI);
- TTEST(T_CV);
- TTEST(T_TP);
- TTEST(T_TI);
- TTEST(T_CM);
- TTEST(T_SR);
- TTEST(T_CRI);
- #endif /* TTEST */
-
- /* hard requirements */
- if (!T_ED || !*T_ED) /* erase display */
- t = "cl";
- if (!T_CM || !*T_CM) /* cursor motion */
- t = "cm";
-
- if (t)
- {
- sprintf(buf, s, t);
- emsg(buf);
- }
-
- if (pairs)
- {
- /* optional pairs */
- if ((!T_TP || !*T_TP) ^ (!T_TI || !*T_TI))
- {
- debug2("cap :me=%s:mr=%s: ignored\n", T_TP, T_TI);
- T_TP = T_TI = NULL;
- }
- if ((!T_CI || !*T_CI) ^ (!T_CV || !*T_CV))
- {
- debug2("cap :vi=%s:ve=%s: ignored\n", T_CI, T_CV);
- T_CI = T_CV = NULL;
- }
- }
- }
-
- /*
- * inchar() - get a character from
- * 1. a scriptfile
- * 2. the keyboard - take care of interpreting escape sequences
- *
- * If we got an interrupt all input is read until none is available.
- * If async is TRUE there is no waiting for the char and we keep the
- * character.
- */
-
- #define INBUFLEN 50 /* buffer lengt, must be enough to contain an
- Amiga raw keycode report */
-
- int
- inchar(async)
- int async;
- {
- static u_char buf[INBUFLEN+1]; /* already entered characters */
- static int len = 0; /* number of valid chars in buf */
- static int lastc = -1; /* last character from script file */
- register int c;
- register int slen = 0;
- register char **p;
- #ifdef AMIGA
- char *s;
- #endif /* AMIGA */
- int first;
- int mode_deleted = FALSE;
-
- if (!async)
- flushbuf();
-
- /*
- * Check for interrupt.
- */
- breakcheck();
-
- /*
- * first try script file
- * If interrupted: Stop reading script files.
- */
- retry:
- if (scriptin[curscript] != NULL)
- {
- if (!got_int && lastc >= 0)
- c = lastc;
- else if (got_int || (c = getc(scriptin[curscript])) < 0) /* reached EOF */
- {
- lastc = -1;
- fclose(scriptin[curscript]);
- scriptin[curscript] = NULL;
- if (curscript > 0)
- --curscript;
- /* recovery may be delayed till after reading a script file */
- if (recoverymode)
- openrecover();
- goto retry; /* may read other script if this one was nested */
- }
- if (c == 0)
- c = K_ZERO; /* replace ^@ with special code */
- if (async)
- lastc = c;
- else
- lastc = -1;
- return c;
- }
-
- /*
- * If we got an interrupt, skip all previously typed characters and
- * reset interrupt flag.
- */
- if (got_int) /* skip typed characters */
- {
- while (GetChars((char *)buf, INBUFLEN, T_PEEK))
- ;
- got_int = FALSE;
- len = 0;
- }
- /*
- * get character(s) from the keyboard
- * this is repeated until we have found that
- * - it is not an escape sequence, return the first char
- * - it is the start of an escape sequence, but it is not completed within
- * a short time, return the first char
- * - it is an escape seqence, translate it into a single byte code
- */
- first = TRUE;
- for (;;)
- {
- if (!first || len == 0)
- {
- /*
- * special case: if we get an <ESC> in insert mode and there are
- * no more characters at once, we pretend to go out of insert mode.
- * This prevents the one second delay after typing an <ESC>.
- * If we get something after all, we may have to redisplay the
- * mode. That the cursor is in the wrong place does not matter.
- */
- if (!async && len == 1 && buf[0] == ESC && (State == INSERT || State == REPLACE) && p_timeout)
- {
- slen = GetChars((char *)buf + len, INBUFLEN - len, T_PEEK);
- if (slen != 0)
- {
- len += slen;
- goto gotchar;
- }
- if (p_mo)
- {
- delmode();
- mode_deleted = TRUE;
- }
- if (Curscol) /* move cursor one left if possible */
- --Curscol;
- else if (Curpos.col != 0 && Cursrow)
- {
- --Cursrow;
- Curscol = Columns - 1;
- }
- setcursor();
- flushbuf();
- }
- /*
- * When async == TRUE do not wait for characters to arrive: T_PEEK
- * When getting the first character wait until one arrives: T_BLOCK
- * When waiting for a key sequence to complete
- * and 'timeout' set wait a short time: T_WAIT
- * and 'timeout' not set wait until one arrives: T_BLOCK
- */
- slen = GetChars((char *)buf + len, INBUFLEN - len, async ? T_PEEK : (len == 0 || !p_timeout) ? T_BLOCK : T_WAIT);
- len += slen;
- if (async && len == 0) /* was async and nothing typed */
- return NUL;
- if (slen == 0) /* escape sequence not completed in time */
- break;
- }
- first = FALSE;
-
- if (async) /* when we get here: len != 0 */
- return (int)buf[0];
-
- gotchar:
- /* search in the escape sequences for the characters we have */
- for (p = (char **)&term_strings.t_ku; p != (char **)&term_strings.t_undo + 1; ++p)
- {
- if (*p == NULL)
- continue;
- slen = strlen(*p);
- if (strncmp(*p, (char *)buf, (size_t)(slen > len ? len : slen)) == 0)
- break;
- }
- if (p == (char **)&term_strings.t_undo + 1) /* no match */
- {
- #ifdef AMIGA /* check for window bounds report */
- buf[len] = 0;
- if (buf[0] == CSI && ((s = strchr((char *)buf, 'r')) || (s = strchr((char *)buf, '|'))))
- {
- slen = s - buf + 1;
- p = NULL;
- }
- else
- #endif
- break;
- }
- if (slen <= len) /* got the complete sequence */
- {
- if (mode_deleted)
- showmode();
- len -= slen;
- memmove((char *)buf, (char *)buf + slen, (size_t)len);
- #ifdef AMIGA
- if (p == NULL) /* got window bounds report */
- {
- set_winsize(0, 0, FALSE); /* get size and redraw screen */
- continue;
- }
- #endif
-
- /* this relies on the Key numbers to be consecutive! */
- return (int)(K_UARROW + (p - (char **)&term_strings.t_ku));
- }
- /*
- * get here when we got an incomplete sequence,
- * we need some more characters
- */
- }
- c = buf[0];
- memmove((char *)buf, (char *)buf+1, (size_t)--len);
- if (c == 0)
- c = K_ZERO; /* replace ^@ with special code */
- /* delete "INSERT" message if we return an ESC */
- if (c == ESC && p_mo && !mode_deleted && (State == INSERT || State == REPLACE))
- delmode();
- return c;
- }
-
- /*
- * outnum - output a number fast (used for row and column numbers) (jw)
- */
- void
- outnum(n)
- register int n;
- {
- outstrn(tgoto("%d", 0, n));
- }
-
- void
- check_winsize()
- {
- if (Columns < 5)
- Columns = 5;
- else if (Columns > MAX_COLUMNS)
- Columns = MAX_COLUMNS;
- if (Rows < 2)
- Rows = 2;
- p_scroll = Rows >> 1;
- }
-
- /*
- * set window size
- * If 'mustset' is TRUE, we must set Rows and Columns, do not get real
- * window size (this is used for the :win command during recovery).
- * If 'mustset' is FALSE, we may try to get the real window size and if
- * it fails use 'width' and 'height'.
- */
- void
- set_winsize(width, height, mustset)
- int width, height;
- int mustset;
- {
- register int tmp;
-
- if (width < 0 || height < 0) /* just checking... */
- return;
-
- if (State == HITRETURN) /* postpone the resizing */
- {
- State = SETWINSIZE;
- return;
- }
- screenclear();
- #ifdef AMIGA
- flushbuf(); /* must do this before mch_get_winsize for some obscure reason */
- #endif /* AMIGA */
- if (mustset || mch_get_winsize())
- {
- debug("mch_get_win failed\n");
- Rows = height;
- Columns = width;
- mch_set_winsize();
- }
- check_winsize(); /* always check, to get p_scroll right */
- if (State == HELP)
- redrawhelp();
- else
- {
- tmp = RedrawingDisabled;
- RedrawingDisabled = FALSE;
- updateScreen(CURSUPD);
- RedrawingDisabled = tmp;
- if (State == CMDLINE)
- redrawcmdline();
- else
- setcursor();
- }
- flushbuf();
- }
-
- void
- settmode(raw)
- int raw;
- {
- static int oldraw = FALSE;
-
- if (oldraw == raw) /* skip if already in desired mode */
- return;
- oldraw = raw;
-
- if (raw)
- outstr(T_KS); /* start "keypad transmit" mode */
- else
- outstr(T_KE); /* stop "keypad transmit" mode */
-
- mch_settmode(raw); /* machine specific function */
- }
-