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diff --git a/contrib/tcsh/tw.comp.c b/contrib/tcsh/tw.comp.c
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-/* $Header: /src/pub/tcsh/tw.comp.c,v 1.31 1998/10/25 15:10:49 christos Exp $ */
-/*
- * tw.comp.c: File completion builtin
- */
-/*-
- * 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: tw.comp.c,v 1.31 1998/10/25 15:10:49 christos Exp $")
-
-#include "tw.h"
-#include "ed.h"
-#include "tc.h"
-
-/* #define TDEBUG */
-struct varent completions;
-
-static int tw_result __P((Char *, Char **));
-static Char **tw_find __P((Char *, struct varent *, int));
-static Char *tw_tok __P((Char *));
-static bool tw_pos __P((Char *, int));
-static void tw_pr __P((Char **));
-static int tw_match __P((Char *, Char *));
-static void tw_prlist __P((struct varent *));
-static Char *tw_dollar __P((Char *,Char **, int, Char *,
- int, const char *));
-
-/* docomplete():
- * Add or list completions in the completion list
- */
-/*ARGSUSED*/
-void
-docomplete(v, t)
- Char **v;
- struct command *t;
-{
- register struct varent *vp;
- register Char *p;
-
- USE(t);
- v++;
- p = *v++;
- if (p == 0)
- tw_prlist(&completions);
- else if (*v == 0) {
- vp = adrof1(strip(p), &completions);
- if (vp)
- tw_pr(vp->vec), xputchar('\n');
- }
- else
- set1(strip(p), saveblk(v), &completions, VAR_READWRITE);
-} /* end docomplete */
-
-
-/* douncomplete():
- * Remove completions from the completion list
- */
-/*ARGSUSED*/
-void
-douncomplete(v, t)
- Char **v;
- struct command *t;
-{
- USE(t);
- unset1(v, &completions);
-} /* end douncomplete */
-
-
-/* tw_prlist():
- * Pretty print a list of variables
- */
-static void
-tw_prlist(p)
- struct varent *p;
-{
- register struct varent *c;
-
- if (setintr)
-#ifdef BSDSIGS
- (void) sigsetmask(sigblock((sigmask_t) 0) & ~sigmask(SIGINT));
-#else /* BSDSIGS */
- (void) sigrelse(SIGINT);
-#endif /* BSDSIGS */
-
- for (;;) {
- while (p->v_left)
- p = p->v_left;
-x:
- if (p->v_parent == 0) /* is it the header? */
- return;
- xprintf("%s\t", short2str(p->v_name));
- tw_pr(p->vec);
- xputchar('\n');
- if (p->v_right) {
- p = p->v_right;
- continue;
- }
- do {
- c = p;
- p = p->v_parent;
- } while (p->v_right == c);
- goto x;
- }
-} /* end tw_prlist */
-
-
-/* tw_pr():
- * Pretty print a completion, adding single quotes around
- * a completion argument and collapsing multiple spaces to one.
- */
-static void
-tw_pr(cmp)
- Char **cmp;
-{
- bool sp, osp;
- Char *ptr;
-
- for (; *cmp; cmp++) {
- xputchar('\'');
- for (osp = 0, ptr = *cmp; *ptr; ptr++) {
- sp = Isspace(*ptr);
- if (sp && osp)
- continue;
- xputchar(*ptr);
- osp = sp;
- }
- xputchar('\'');
- if (cmp[1])
- xputchar(' ');
- }
-} /* end tw_pr */
-
-
-/* tw_find():
- * Find the first matching completion.
- * For commands we only look at names that start with -
- */
-static Char **
-tw_find(nam, vp, cmd)
- Char *nam;
- register struct varent *vp;
- int cmd;
-{
- register Char **rv;
-
- for (vp = vp->v_left; vp; vp = vp->v_right) {
- if (vp->v_left && (rv = tw_find(nam, vp, cmd)) != NULL)
- return rv;
- if (cmd) {
- if (vp->v_name[0] != '-')
- continue;
- if (Gmatch(nam, &vp->v_name[1]) && vp->vec != NULL)
- return vp->vec;
- }
- else
- if (Gmatch(nam, vp->v_name) && vp->vec != NULL)
- return vp->vec;
- }
- return NULL;
-} /* end tw_find */
-
-
-/* tw_pos():
- * Return true if the position is within the specified range
- */
-static bool
-tw_pos(ran, wno)
- Char *ran;
- int wno;
-{
- Char *p;
-
- if (ran[0] == '*' && ran[1] == '\0')
- return 1;
-
- for (p = ran; *p && *p != '-'; p++)
- continue;
-
- if (*p == '\0') /* range == <number> */
- return wno == getn(ran);
-
- if (ran == p) /* range = - <number> */
- return wno <= getn(&ran[1]);
- *p++ = '\0';
-
- if (*p == '\0') /* range = <number> - */
- return getn(ran) <= wno;
- else /* range = <number> - <number> */
- return (getn(ran) <= wno) && (wno <= getn(p));
-
-} /* end tw_pos */
-
-
-/* tw_tok():
- * Return the next word from string, unquoteing it.
- */
-static Char *
-tw_tok(str)
- Char *str;
-{
- static Char *bf = NULL;
-
- if (str != NULL)
- bf = str;
-
- /* skip leading spaces */
- for (; *bf && Isspace(*bf); bf++)
- continue;
-
- for (str = bf; *bf && !Isspace(*bf); bf++) {
- if (ismeta(*bf))
- return INVPTR;
- *bf = *bf & ~QUOTE;
- }
- if (*bf != '\0')
- *bf++ = '\0';
-
- return *str ? str : NULL;
-} /* end tw_tok */
-
-
-/* tw_match():
- * Match a string against the pattern given.
- * and return the number of matched characters
- * in a prefix of the string.
- */
-static int
-tw_match(str, pat)
- Char *str, *pat;
-{
- Char *estr;
- int rv = Gnmatch(str, pat, &estr);
-#ifdef TDEBUG
- xprintf("Gnmatch(%s, ", short2str(str));
- xprintf("%s, ", short2str(pat));
- xprintf("%s) = %d [%d]\n", short2str(estr), rv, estr - str);
-#endif /* TDEBUG */
- return (int) (rv ? estr - str : -1);
-}
-
-
-/* tw_result():
- * Return what the completion action should be depending on the
- * string
- */
-static int
-tw_result(act, pat)
- Char *act, **pat;
-{
- int looking;
- static Char* res = NULL;
-
- if (res != NULL)
- xfree((ptr_t) res), res = NULL;
-
- switch (act[0] & ~QUOTE) {
- case 'X':
- looking = TW_COMPLETION;
- break;
- case 'S':
- looking = TW_SIGNAL;
- break;
- case 'a':
- looking = TW_ALIAS;
- break;
- case 'b':
- looking = TW_BINDING;
- break;
- case 'c':
- looking = TW_COMMAND;
- break;
- case 'C':
- looking = TW_PATH | TW_COMMAND;
- break;
- case 'd':
- looking = TW_DIRECTORY;
- break;
- case 'D':
- looking = TW_PATH | TW_DIRECTORY;
- break;
- case 'e':
- looking = TW_ENVVAR;
- break;
- case 'f':
- looking = TW_FILE;
- break;
-#ifdef COMPAT
- case 'p':
-#endif /* COMPAT */
- case 'F':
- looking = TW_PATH | TW_FILE;
- break;
- case 'g':
- looking = TW_GRPNAME;
- break;
- case 'j':
- looking = TW_JOB;
- break;
- case 'l':
- looking = TW_LIMIT;
- break;
- case 'n':
- looking = TW_NONE;
- break;
- case 's':
- looking = TW_SHELLVAR;
- break;
- case 't':
- looking = TW_TEXT;
- break;
- case 'T':
- looking = TW_PATH | TW_TEXT;
- break;
- case 'v':
- looking = TW_VARIABLE;
- break;
- case 'u':
- looking = TW_USER;
- break;
- case 'x':
- looking = TW_EXPLAIN;
- break;
-
- case '$':
- *pat = res = Strsave(&act[1]);
- (void) strip(res);
- return(TW_VARLIST);
-
- case '(':
- *pat = res = Strsave(&act[1]);
- if ((act = Strchr(res, ')')) != NULL)
- *act = '\0';
- (void) strip(res);
- return TW_WORDLIST;
-
- case '`':
- res = Strsave(act);
- if ((act = Strchr(&res[1], '`')) != NULL)
- *++act = '\0';
-
- if (didfds == 0) {
- /*
- * Make sure that we have some file descriptors to
- * play with, so that the processes have at least 0, 1, 2
- * open
- */
- (void) dcopy(SHIN, 0);
- (void) dcopy(SHOUT, 1);
- (void) dcopy(SHDIAG, 2);
- }
- if ((act = globone(res, G_APPEND)) != NULL) {
- xfree((ptr_t) res), res = NULL;
- *pat = res = Strsave(act);
- xfree((ptr_t) act);
- return TW_WORDLIST;
- }
- return TW_ZERO;
-
- default:
- stderror(ERR_COMPCOM, short2str(act));
- return TW_ZERO;
- }
-
- switch (act[1] & ~QUOTE) {
- case '\0':
- return looking;
-
- case ':':
- *pat = res = Strsave(&act[2]);
- (void) strip(res);
- return looking;
-
- default:
- stderror(ERR_COMPCOM, short2str(act));
- return TW_ZERO;
- }
-} /* end tw_result */
-
-
-/* tw_dollar():
- * Expand $<n> args in buffer
- */
-static Char *
-tw_dollar(str, wl, nwl, buffer, sep, msg)
- Char *str, **wl;
- int nwl;
- Char *buffer;
- int sep;
- const char *msg;
-{
- Char *sp, *bp = buffer, *ebp = &buffer[MAXPATHLEN];
-
- for (sp = str; *sp && *sp != sep && bp < ebp;)
- if (sp[0] == '$' && sp[1] == ':' && Isdigit(sp[sp[2] == '-' ? 3 : 2])) {
- int num, neg = 0;
- sp += 2;
- if (*sp == '-') {
- neg = 1;
- sp++;
- }
- for (num = *sp++ - '0'; Isdigit(*sp); num += 10 * num + *sp++ - '0')
- continue;
- if (neg)
- num = nwl - num - 1;
- if (num >= 0 && num < nwl) {
- Char *ptr;
- for (ptr = wl[num]; *ptr && bp < ebp - 1; *bp++ = *ptr++)
- continue;
-
- }
- }
- else
- *bp++ = *sp++;
-
- *bp = '\0';
-
- if (*sp++ == sep)
- return sp;
-
- stderror(ERR_COMPMIS, sep, msg, short2str(str));
- return --sp;
-} /* end tw_dollar */
-
-
-/* tw_complete():
- * Return the appropriate completion for the command
- *
- * valid completion strings are:
- * p/<range>/<completion>/[<suffix>/] positional
- * c/<pattern>/<completion>/[<suffix>/] current word ignore pattern
- * C/<pattern>/<completion>/[<suffix>/] current word with pattern
- * n/<pattern>/<completion>/[<suffix>/] next word
- * N/<pattern>/<completion>/[<suffix>/] next-next word
- */
-int
-tw_complete(line, word, pat, looking, suf)
- Char *line, **word, **pat;
- int looking, *suf;
-{
- Char buf[MAXPATHLEN + 1], **vec, *ptr;
- Char *wl[MAXPATHLEN/6];
- static Char nomatch[2] = { (Char) ~0, 0x00 };
- int wordno, n;
-
- copyn(buf, line, MAXPATHLEN);
-
- /* find the command */
- if ((wl[0] = tw_tok(buf)) == NULL || wl[0] == INVPTR)
- return TW_ZERO;
-
- /*
- * look for hardwired command completions using a globbing
- * search and for arguments using a normal search.
- */
- if ((vec = tw_find(wl[0], &completions, (looking == TW_COMMAND))) == NULL)
- return looking;
-
- /* tokenize the line one more time :-( */
- for (wordno = 1; (wl[wordno] = tw_tok(NULL)) != NULL &&
- wl[wordno] != INVPTR; wordno++)
- continue;
-
- if (wl[wordno] == INVPTR) /* Found a meta character */
- return TW_ZERO; /* de-activate completions */
-#ifdef TDEBUG
- {
- int i;
- for (i = 0; i < wordno; i++)
- xprintf("'%s' ", short2str(wl[i]));
- xprintf("\n");
- }
-#endif /* TDEBUG */
-
- /* if the current word is empty move the last word to the next */
- if (**word == '\0') {
- wl[wordno] = *word;
- wordno++;
- }
- wl[wordno] = NULL;
-
-
-#ifdef TDEBUG
- xprintf("\r\n");
- xprintf(" w#: %d\n", wordno);
- xprintf("line: %s\n", short2str(line));
- xprintf(" cmd: %s\n", short2str(wl[0]));
- xprintf("word: %s\n", short2str(*word));
- xprintf("last: %s\n", wordno - 2 >= 0 ? short2str(wl[wordno-2]) : "n/a");
- xprintf("this: %s\n", wordno - 1 >= 0 ? short2str(wl[wordno-1]) : "n/a");
-#endif /* TDEBUG */
-
- for (;vec != NULL && (ptr = vec[0]) != NULL; vec++) {
- Char ran[MAXPATHLEN+1],/* The pattern or range X/<range>/XXXX/ */
- com[MAXPATHLEN+1],/* The completion X/XXXXX/<completion>/ */
- *pos = NULL; /* scratch pointer */
- int cmd, sep; /* the command and separator characters */
-
- if (ptr[0] == '\0')
- continue;
-
-#ifdef TDEBUG
- xprintf("match %s\n", short2str(ptr));
-#endif /* TDEBUG */
-
- switch (cmd = ptr[0]) {
- case 'N':
- pos = (wordno - 3 < 0) ? nomatch : wl[wordno - 3];
- break;
- case 'n':
- pos = (wordno - 2 < 0) ? nomatch : wl[wordno - 2];
- break;
- case 'c':
- case 'C':
- pos = (wordno - 1 < 0) ? nomatch : wl[wordno - 1];
- break;
- case 'p':
- break;
- default:
- stderror(ERR_COMPINV, CGETS(27, 1, "command"), cmd);
- return TW_ZERO;
- }
-
- sep = ptr[1];
- if (!Ispunct(sep)) {
- stderror(ERR_COMPINV, CGETS(27, 2, "separator"), sep);
- return TW_ZERO;
- }
-
- ptr = tw_dollar(&ptr[2], wl, wordno, ran, sep,
- CGETS(27, 3, "pattern"));
- if (ran[0] == '\0') /* check for empty pattern (disallowed) */
- {
- stderror(ERR_COMPINC, cmd == 'p' ? CGETS(27, 4, "range") :
- CGETS(27, 3, "pattern"), "");
- return TW_ZERO;
- }
-
- ptr = tw_dollar(ptr, wl, wordno, com, sep, CGETS(27, 5, "completion"));
-
- if (*ptr != '\0') {
- if (*ptr == sep)
- *suf = ~0;
- else
- *suf = *ptr;
- }
- else
- *suf = '\0';
-
-#ifdef TDEBUG
- xprintf("command: %c\nseparator: %c\n", cmd, sep);
- xprintf("pattern: %s\n", short2str(ran));
- xprintf("completion: %s\n", short2str(com));
- xprintf("suffix: ");
- switch (*suf) {
- case 0:
- xprintf("*auto suffix*\n");
- break;
- case ~0:
- xprintf("*no suffix*\n");
- break;
- default:
- xprintf("%c\n", *suf);
- break;
- }
-#endif /* TDEBUG */
-
- switch (cmd) {
- case 'p': /* positional completion */
-#ifdef TDEBUG
- xprintf("p: tw_pos(%s, %d) = ", short2str(ran), wordno - 1);
- xprintf("%d\n", tw_pos(ran, wordno - 1));
-#endif /* TDEBUG */
- if (!tw_pos(ran, wordno - 1))
- continue;
- return tw_result(com, pat);
-
- case 'N': /* match with the next-next word */
- case 'n': /* match with the next word */
- case 'c': /* match with the current word */
- case 'C':
-#ifdef TDEBUG
- xprintf("%c: ", cmd);
-#endif /* TDEBUG */
- if ((n = tw_match(pos, ran)) < 0)
- continue;
- if (cmd == 'c')
- *word += n;
- return tw_result(com, pat);
-
- default:
- return TW_ZERO; /* Cannot happen */
- }
- }
- *suf = '\0';
- return TW_ZERO;
-} /* end tw_complete */
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