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- /* $Header: /u/christos/src/tcsh-6.03/RCS/tw.parse.c,v 3.42 1992/10/18 00:30:39 christos Exp $ */
- /*
- * tw.parse.c: Everyone has taken a shot in this futile effort to
- * lexically analyze a csh line... Well we cannot good
- * a job as good as sh.lex.c; but we try. Amazing that
- * it works considering how many hands have touched this code
- */
- /*-
- * 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.parse.c,v 3.42 1992/10/18 00:30:39 christos Exp $")
-
- #include "tw.h"
- #include "ed.h"
- #include "tc.h"
-
- #define EVEN(x) (((x) & 1) != 1)
-
- #define DOT_NONE 0 /* Don't display dot files */
- #define DOT_NOT 1 /* Don't display dot or dot-dot */
- #define DOT_ALL 2 /* Display all dot files */
-
- /* TW_NONE, TW_COMMAND, TW_VARIABLE, TW_LOGNAME, */
- /* TW_FILE, TW_DIRECTORY, TW_VARLIST, TW_USER, */
- /* TW_COMPLETION, TW_ALIAS, TW_SHELLVAR, TW_ENVVAR, */
- /* TW_BINDING, TW_WORDLIST, TW_LIMIT, TW_SIGNAL */
- /* TW_JOB, TW_EXPLAIN, TW_PATHNAME, TW_TEXT */
- static void (*tw_start_entry[]) __P((DIR *, Char *)) = {
- tw_file_start, tw_cmd_start, tw_var_start, tw_logname_start,
- tw_file_start, tw_file_start, tw_vl_start, tw_logname_start,
- tw_complete_start, tw_alias_start, tw_var_start, tw_var_start,
- tw_bind_start, tw_wl_start, tw_limit_start, tw_sig_start,
- tw_job_start, tw_file_start, tw_file_start, tw_file_start
- };
-
- static Char * (*tw_next_entry[]) __P((Char *, int *)) = {
- tw_file_next, tw_cmd_next, tw_var_next, tw_logname_next,
- tw_file_next, tw_file_next, tw_var_next, tw_logname_next,
- tw_var_next, tw_var_next, tw_shvar_next, tw_envvar_next,
- tw_bind_next, tw_wl_next, tw_limit_next, tw_sig_next,
- tw_job_next, tw_file_next, tw_file_next, tw_file_next
- };
-
- static void (*tw_end_entry[]) __P((void)) = {
- tw_dir_end, tw_dir_end, tw_dir_end, tw_logname_end,
- tw_dir_end, tw_dir_end, tw_dir_end, tw_logname_end,
- tw_dir_end, tw_dir_end, tw_dir_end, tw_dir_end,
- tw_dir_end, tw_dir_end, tw_dir_end, tw_dir_end,
- tw_dir_end, tw_dir_end, tw_dir_end, tw_dir_end
- };
-
- /* #define TDEBUG */
-
- /* Set to TRUE if recexact is set and an exact match is found
- * along with other, longer, matches.
- */
- int non_unique_match = FALSE;
- static bool SearchNoDirErr = 0; /* t_search returns -2 if dir is unreadable */
-
- /* state so if a completion is interrupted, the input line doesn't get
- nuked */
- int InsideCompletion = 0;
-
- /* do the expand or list on the command line -- SHOULD BE REPLACED */
-
- extern Char NeedsRedraw; /* from ed.h */
- extern int Tty_raw_mode;
- extern int TermH; /* from the editor routines */
- extern int lbuffed; /* from sh.print.c */
-
- static void extract_dir_and_name __P((Char *, Char *, Char *));
- static Char *quote_meta __P((Char *, int, bool));
- static Char *dollar __P((Char *, Char *));
- static Char *tilde __P((Char *, Char *));
- static int expand_dir __P((Char *, Char *, DIR **, COMMAND));
- static bool nostat __P((Char *));
- static Char filetype __P((Char *, Char *));
- static int t_glob __P((Char ***, int));
- static int c_glob __P((Char ***));
- static int is_prefix __P((Char *, Char *));
- static int is_suffix __P((Char *, Char *));
- static int recognize __P((Char *, Char *, int, int));
- static int ignored __P((Char *));
- static int isadirectory __P((Char *, Char *));
- static int tw_collect_items __P((COMMAND, int, Char *, Char *,
- Char *, Char *, int));
- static int tw_collect __P((COMMAND, int, Char *, Char *,
- Char *, Char *, int, DIR *));
- static Char tw_suffix __P((int, Char *, Char *, Char *,
- Char *));
- static void tw_fixword __P((int, Char *, Char *, Char *, int));
- static void tw_list_items __P((int, int, int));
-
- #ifdef notdef
- /*
- * If we find a set command, then we break a=b to a= and word becomes
- * b else, we don't break a=b. [don't use that; splits words badly and
- * messes up tw_complete()]
- */
- #define isaset(c, w) ((w)[-1] == '=' && \
- ((c)[0] == 's' && (c)[1] == 'e' && (c)[2] == 't' && \
- ((c[3] == ' ' || (c)[3] == '\t'))))
- #endif
-
- #define QLINESIZE (INBUFSIZE + 1)
-
- /* tenematch():
- * Return:
- * > 1: No. of items found
- * = 1: Exactly one match / spelling corrected
- * = 0: No match / spelling was correct
- * < 0: Error (incl spelling correction impossible)
- */
- int
- tenematch(inputline, num_read, command)
- Char *inputline; /* match string prefix */
- int num_read; /* # actually in inputline */
- COMMAND command; /* LIST or RECOGNIZE or PRINT_HELP */
-
- {
- Char qline[QLINESIZE];
- Char qu = 0, *pat = STRNULL;
- Char *str_end, *cp, *wp, *wordp;
- Char *cmd_start, *word_start, *word;
- Char *ocmd_start = NULL, *oword_start = NULL, *oword = NULL;
- int suf = 0;
- int space_left;
- int looking; /* what we are looking for */
- int search_ret; /* what search returned for debugging */
- int backq = 0;
-
- if (num_read > QLINESIZE - 1)
- return -1;
- str_end = &inputline[num_read];
-
- word_start = inputline;
- word = cmd_start = wp = qline;
- for (cp = inputline; cp < str_end; cp++) {
- if (!cmap(qu, _ESC)) {
- if (cmap(*cp, _Q|_ESC)) {
- if (qu == 0 || qu == *cp) {
- qu ^= *cp;
- continue;
- }
- }
- if (qu != '\'' && cmap(*cp, _Q1)) {
- if (backq ^= 1) {
- ocmd_start = cmd_start;
- oword_start = word_start;
- oword = word;
- word_start = cp + 1;
- word = cmd_start = wp + 1;
- }
- else {
- cmd_start = ocmd_start;
- word_start = oword_start;
- word = oword;
- }
- *wp++ = *cp;
- continue;
- }
- }
- if (iscmdmeta(*cp))
- cmd_start = wp + 1;
- /* Don't quote '/' to make the recognize stuff work easily */
- /* Don't quote '$' in double quotes */
- *wp = *cp | (qu && *cp != '/' && (*cp != '$' || qu != '"') ?
- QUOTE : 0);
- if (ismetahash(*wp) /* || isaset(cmd_start, wp + 1) */)
- word = wp + 1, word_start = cp + 1;
- wp++;
- if (cmap(qu, _ESC))
- qu = 0;
- }
- *wp = 0;
-
- /* move the word_start after the quote */
- if (*word_start == qu)
- word_start++;
-
- #ifdef masscomp
- /*
- * Avoid a nasty message from the RTU 4.1A & RTU 5.0 compiler concerning
- * the "overuse of registers". According to the compiler release notes,
- * incorrect code may be produced unless the offending expression is
- * rewritten. Therefore, we can't just ignore it, DAS DEC-90.
- */
- space_left = QLINESIZE - 1;
- space_left -= word - qline;
- #else
- space_left = QLINESIZE - 1 - (word - qline);
- #endif
-
- looking = starting_a_command(word - 1, qline) ?
- TW_COMMAND : TW_ZERO;
- wordp = word;
-
- #ifdef TDEBUG
- xprintf("starting_a_command %d\n", looking);
- xprintf("\ncmd_start:%S:\n", cmd_start);
- xprintf("qline:%S:\n", qline);
- xprintf("qline:");
- for (wp = qline; *wp; wp++)
- xprintf("%c", *wp & QUOTE ? '-' : ' ');
- xprintf(":\n");
- xprintf("word:%S:\n", word);
- xprintf("word:");
- /* Must be last, so wp is still pointing to the end of word */
- for (wp = word; *wp; wp++)
- xprintf("%c", *wp & QUOTE ? '-' : ' ');
- xprintf(":\n");
- #endif
-
- if (command == RECOGNIZE || command == LIST || command == SPELL) {
- #ifdef TDEBUG
- xprintf("complete %d ", looking);
- #endif
- looking = tw_complete(cmd_start, &wordp, &pat, looking, &suf);
- #ifdef TDEBUG
- xprintf("complete %d %S\n", looking, pat);
- #endif
- }
-
- switch ((int) command) {
- Char buffer[FILSIZ + 1], *bptr;
- Char *slshp;
- Char *items[2], **ptr;
- int i, count;
-
- case RECOGNIZE:
- case RECOGNIZE_ALL:
- if (adrof(STRautocorrect)) {
- if ((slshp = Strrchr(wordp, '/')) != NULL && slshp[1] != '\0') {
- SearchNoDirErr = 1;
- for (bptr = wordp; bptr < slshp; bptr++) {
- /*
- * do not try to correct spelling of words containing
- * globbing characters
- */
- if (isglob(*bptr)) {
- SearchNoDirErr = 0;
- break;
- }
- }
- }
- }
- else
- slshp = STRNULL;
- search_ret = t_search(wordp, wp, RECOGNIZE, space_left, looking, 1,
- pat, suf);
- SearchNoDirErr = 0;
-
- if (search_ret == -2) {
- Char rword[FILSIZ + 1];
-
- (void) Strcpy(rword, slshp);
- if (slshp != STRNULL)
- *slshp = '\0';
- search_ret = spell_me(wordp, QLINESIZE - (wordp - qline), looking);
- if (search_ret == 1) {
- /* get rid of old word */
- DeleteBack(str_end - word_start);
- (void) Strcat(wordp, rword);
- /* insert newly spelled word */
- if (InsertStr(quote_meta(wordp, qu, 0)) < 0)
- return -1; /* error inserting */
- wp = wordp + Strlen(wordp);
- search_ret = t_search(wordp, wp, RECOGNIZE, space_left,
- looking, 1, pat, suf);
- }
- }
-
- /*
- * Change by Christos Zoulas: if the name has metachars in it, quote
- * the metachars, but only if we are outside quotes.
- * We don't quote the last space if we had a unique match and
- * addsuffix was set. Otherwise the last space was part of a word.
- */
- if (*wp && InsertStr(quote_meta(wp, qu, search_ret == 1 &&
- (bool) is_set(STRaddsuffix))) < 0)
- /* put it in the input buffer */
- return -1; /* error inserting */
- return search_ret;
-
- case SPELL:
- for (bptr = word_start; bptr < str_end; bptr++) {
- /*
- * do not try to correct spelling of words containing globbing
- * characters
- */
- if (isglob(*bptr))
- return 0;
- }
- search_ret = spell_me(wordp, QLINESIZE - (wordp - qline), looking);
- if (search_ret == 1) {
- /* get rid of old word */
- DeleteBack(str_end - word_start);
- /* insert newly spelled word */
- #ifdef notdef
- /*
- * We don't want to quote spelling stuff, otherwise
- * $OHME -> \$HOME
- */
- if (InsertStr(quote_meta(wordp, qu, 0)) < 0)
- return -1; /* error inserting */
- #endif
- if (InsertStr(wordp) < 0)
- return -1; /* error inserting */
- }
- return search_ret;
-
- case PRINT_HELP:
- do_help(cmd_start);
- return 1;
-
- case GLOB:
- case GLOB_EXPAND:
- (void) Strncpy(buffer, wordp, FILSIZ + 1);
- items[0] = buffer;
- items[1] = NULL;
- ptr = items;
- count = (looking == TW_COMMAND && Strchr(wordp, '/') == 0) ?
- c_glob(&ptr) :
- t_glob(&ptr, looking == TW_COMMAND);
- if (count > 0) {
- if (command == GLOB)
- print_by_column(STRNULL, ptr, count, 0);
- else {
- DeleteBack(str_end - word_start);/* get rid of old word */
- for (i = 0; i < count; i++)
- if (ptr[i] && *ptr[i]) {
- if (InsertStr(quote_meta(ptr[i], qu, 0)) < 0 ||
- InsertStr(STRspace) < 0) {
- blkfree(ptr);
- return (-1);
- }
- }
- }
- blkfree(ptr);
- }
- return count;
-
- case VARS_EXPAND:
- if (dollar(buffer, wordp)) {
- DeleteBack(str_end - word_start);
- if (InsertStr(quote_meta(buffer, qu, 0)) < 0)
- return (-1);
- return (1);
- }
- return (0);
-
- case PATH_NORMALIZE:
- if ((bptr = dnormalize(wordp, symlinks == SYM_IGNORE ||
- symlinks == SYM_EXPAND)) != NULL) {
- (void) Strcpy(buffer, bptr);
- xfree((ptr_t) bptr);
- DeleteBack(str_end - word_start);
- if (InsertStr(quote_meta(buffer, qu, 0)) < 0)
- return (-1);
- return (1);
- }
- return (0);
-
- case LIST:
- case LIST_ALL:
- search_ret = t_search(wordp, wp, LIST, space_left, looking, 1,
- pat, suf);
- return search_ret;
-
- default:
- xprintf("tcsh: Internal match error.\n");
- return 1;
-
- }
- } /* end tenematch */
-
-
- /* t_glob():
- * Return a list of files that match the pattern
- */
- static int
- t_glob(v, cmd)
- register Char ***v;
- int cmd;
- {
- jmp_buf_t osetexit;
-
- if (**v == 0)
- return (0);
- gflag = 0, tglob(*v);
- if (gflag) {
- getexit(osetexit); /* make sure to come back here */
- if (setexit() == 0)
- *v = globall(*v);
- resexit(osetexit);
- gargv = 0;
- if (haderr) {
- haderr = 0;
- NeedsRedraw = 1;
- return (-1);
- }
- if (*v == 0)
- return (0);
- }
- else
- return (0);
-
- if (cmd) {
- Char **av = *v, *p;
- int fwd, i, ac = gargc;
-
- for (i = 0, fwd = 0; i < ac; i++)
- if (!executable(NULL, av[i], 0)) {
- fwd++;
- p = av[i];
- av[i] = NULL;
- xfree((ptr_t) p);
- }
- else if (fwd)
- av[i - fwd] = av[i];
-
- if (fwd)
- av[i - fwd] = av[i];
- gargc -= fwd;
- av[gargc] = NULL;
- }
-
- return (gargc);
- } /* end t_glob */
-
-
- /* c_glob():
- * Return a list of commands that match the pattern
- */
- static int
- c_glob(v)
- register Char ***v;
- {
- Char *pat = **v, *cmd, **av;
- Char dir[MAXPATHLEN+1];
- int flag, at, ac;
-
- if (pat == NULL)
- return (0);
-
- ac = 0;
- at = 10;
- av = (Char **) xmalloc((size_t) (at * sizeof(Char *)));
- av[ac] = NULL;
-
- tw_cmd_start(NULL, NULL);
- while ((cmd = tw_cmd_next(dir, &flag)) != NULL)
- if (Gmatch(cmd, pat)) {
- if (ac + 1 >= at) {
- at += 10;
- av = (Char **) xrealloc((ptr_t) av,
- (size_t) (at * sizeof(Char *)));
- }
- av[ac++] = Strsave(cmd);
- av[ac] = NULL;
- }
- tw_dir_end();
- *v = av;
-
- return (ac);
- } /* end c_glob */
-
-
- /* quote_meta():
- * quote (\) the meta-characters in a word
- * except trailing space if trail_space is set
- * return pointer to quoted word in static storage
- */
- static Char *
- quote_meta(word, qu, trail_space)
- Char *word;
- int qu;
- bool trail_space;
- {
- static Char buffer[2 * FILSIZ + 1], *bptr, *wptr;
-
- for (bptr = buffer, wptr = word; *wptr != '\0';) {
- if (bptr > buffer + 2 * FILSIZ - 4)
- break;
-
- if (qu && *wptr == qu) {
- *bptr++ = qu;
- *bptr++ = '\\';
- *bptr++ = qu;
- }
- if (!qu &&
- (cmap(*wptr, _META | _DOL | _Q | _Q1 | _ESC | _GLOB) ||
- *wptr == HIST || *wptr == HISTSUB) &&
- (*wptr != ' ' || !trail_space || *(wptr + 1) != '\0') &&
- *wptr != '#')
- *bptr++ = '\\';
- *bptr++ = *wptr++;
- if (cmap(qu, _ESC))
- qu = 0;
- }
- *bptr = '\0';
- return (buffer);
- } /* end quote_meta */
-
-
-
- /* is_prefix():
- * return true if check matches initial chars in template
- * This differs from PWB imatch in that if check is null
- * it matches anything
- */
- static int
- is_prefix(check, template)
- register Char *check, *template;
- {
- for (; *check; check++, template++)
- if ((*check & TRIM) != (*template & TRIM))
- return (FALSE);
- return (TRUE);
- } /* end is_prefix */
-
-
- /* is_suffix():
- * Return true if the chars in template appear at the
- * end of check, I.e., are it's suffix.
- */
- static int
- is_suffix(check, template)
- register Char *check, *template;
- {
- register Char *t, *c;
-
- for (t = template; *t++;)
- continue;
- for (c = check; *c++;)
- continue;
- for (;;) {
- if (t == template)
- return 1;
- --t;
- --c;
- if (c == check || (*t & TRIM) != (*c & TRIM))
- return 0;
- }
- } /* end is_suffix */
-
-
- /* ignored():
- * Return true if this is an ignored entry
- */
- static int
- ignored(entry)
- register Char *entry;
- {
- struct varent *vp;
- register Char **cp;
-
- if ((vp = adrof(STRfignore)) == NULL || (cp = vp->vec) == NULL)
- return (FALSE);
- for (; *cp != NULL; cp++)
- if (is_suffix(entry, *cp))
- return (TRUE);
- return (FALSE);
- } /* end ignored */
-
-
-
- /* starting_a_command():
- * return true if the command starting at wordstart is a command
- */
- int
- starting_a_command(wordstart, inputline)
- register Char *wordstart, *inputline;
- {
- register Char *ptr, *ncmdstart;
- int count;
- static Char
- cmdstart[] = {'`', ';', '&', '(', '|', '\0'},
- cmdalive[] = {' ', '\t', '\'', '"', '<', '>', '\0'};
-
- /*
- * Find if the number of backquotes is odd or even.
- */
- for (ptr = wordstart, count = 0;
- ptr >= inputline;
- count += (*ptr-- == '`'))
- continue;
- /*
- * if the number of backquotes is even don't include the backquote char in
- * the list of command starting delimiters [if it is zero, then it does not
- * matter]
- */
- ncmdstart = cmdstart + EVEN(count);
-
- /*
- * look for the characters previous to this word if we find a command
- * starting delimiter we break. if we find whitespace and another previous
- * word then we are not a command
- *
- * count is our state machine: 0 looking for anything 1 found white-space
- * looking for non-ws
- */
- for (count = 0; wordstart >= inputline; wordstart--) {
- if (*wordstart == '\0')
- continue;
- if (Strchr(ncmdstart, *wordstart))
- break;
- /*
- * found white space
- */
- if ((ptr = Strchr(cmdalive, *wordstart)) != NULL)
- count = 1;
- if (count == 1 && !ptr)
- return (FALSE);
- }
-
- if (wordstart > inputline)
- switch (*wordstart) {
- case '&': /* Look for >& */
- while (wordstart > inputline &&
- (*--wordstart == ' ' || *wordstart == '\t'))
- continue;
- if (*wordstart == '>')
- return (FALSE);
- break;
- case '(': /* check for foreach, if etc. */
- while (wordstart > inputline &&
- (*--wordstart == ' ' || *wordstart == '\t'))
- continue;
- if (!iscmdmeta(*wordstart) &&
- (*wordstart != ' ' && *wordstart != '\t'))
- return (FALSE);
- break;
- default:
- break;
- }
- return (TRUE);
- } /* end starting_a_command */
-
-
- /* recognize():
- * Object: extend what user typed up to an ambiguity.
- * Algorithm:
- * On first match, copy full entry (assume it'll be the only match)
- * On subsequent matches, shorten exp_name to the first
- * character mismatch between exp_name and entry.
- * If we shorten it back to the prefix length, stop searching.
- */
- static int
- recognize(exp_name, entry, name_length, numitems)
- Char *exp_name, *entry;
- int name_length, numitems;
- {
- if (numitems == 1) /* 1st match */
- copyn(exp_name, entry, MAXNAMLEN);
- else { /* 2nd and subsequent matches */
- register Char *x, *ent;
- register int len = 0;
-
- for (x = exp_name, ent = entry;
- *x && (*x & TRIM) == (*ent & TRIM); x++, len++, ent++)
- continue;
- *x = '\0'; /* Shorten at 1st char diff */
- if (len == name_length) /* Ambiguous to prefix? */
- return (-1); /* So stop now and save time */
- }
- return (0);
- } /* end recognize */
-
-
- /* tw_collect_items():
- * Collect items that match target.
- * SPELL command:
- * Returns the spelling distance of the closest match.
- * else
- * Returns the number of items found.
- * If none found, but some ignored items were found,
- * It returns the -number of ignored items.
- */
- static int
- tw_collect_items(command, looking, exp_dir, exp_name, target, pat, flags)
- COMMAND command;
- int looking;
- Char *exp_dir, *exp_name, *target, *pat;
- int flags;
-
- {
- int done = FALSE; /* Search is done */
- int showdots; /* Style to show dot files */
- int nignored = 0; /* Number of fignored items */
- int numitems = 0; /* Number of matched items */
- int name_length = Strlen(target); /* Length of prefix (file name) */
- int exec_check = flags & TW_EXEC_CHK;/* need to check executability */
- int dir_check = flags & TW_DIR_CHK; /* Need to check for directories */
- int text_check = flags & TW_TEXT_CHK;/* Need to check for non-directories */
- int dir_ok = flags & TW_DIR_OK; /* Ignore directories? */
- int gpat = flags & TW_PAT_OK; /* Match against a pattern */
- int ignoring = flags & TW_IGN_OK; /* Use fignore? */
- int d = 4, nd; /* Spelling distance */
- Char *entry, *ptr;
- Char buf[MAXPATHLEN+1];
- struct varent *vp;
- int len;
- flags = 0;
-
- if ((vp = adrof(STRshowdots)) != NULL) {
- if (vp->vec[0][0] == '-' && vp->vec[0][1] == 'A' &&
- vp->vec[0][2] == '\0')
- showdots = DOT_NOT;
- else
- showdots = DOT_ALL;
- }
- else
- showdots = DOT_NONE;
-
- while (!done && (entry = (*tw_next_entry[looking])(exp_dir, &flags))) {
- #ifdef TDEBUG
- xprintf("entry = %S\n", entry);
- #endif
- switch (looking) {
- case TW_FILE:
- case TW_DIRECTORY:
- case TW_TEXT:
- /*
- * Don't match . files on null prefix match
- */
- if (showdots == DOT_NOT && (ISDOT(entry) || ISDOTDOT(entry)))
- done = TRUE;
- if (name_length == 0 && entry[0] == '.' && showdots == DOT_NONE)
- done = TRUE;
- break;
-
- case TW_COMMAND:
- exec_check = flags & TW_EXEC_CHK;
- dir_ok = flags & TW_DIR_OK;
- break;
-
- default:
- break;
- }
-
- if (done) {
- done = FALSE;
- continue;
- }
-
- switch (command) {
-
- case SPELL: /* correct the spelling of the last bit */
- if (name_length == 0) {/* zero-length word can't be misspelled */
- exp_name[0] = '\0';/* (not trying is important for ~) */
- d = 0;
- done = TRUE;
- break;
- }
- if (gpat && !Gmatch(entry, pat))
- break;
- nd = spdist(entry, target); /* test the entry against original */
- if (nd <= d && nd != 4) {
- if (!(exec_check && !executable(exp_dir, entry, dir_ok))) {
- (void) Strcpy(exp_name, entry);
- d = nd;
- if (d == 0) /* if found it exactly */
- done = TRUE;
- }
- }
- else if (nd == 4) {
- if (spdir(exp_name, exp_dir, entry, target)) {
- if (exec_check && !executable(exp_dir, exp_name, dir_ok))
- break;
- #ifdef notdef
- /*
- * We don't want to stop immediately, because
- * we might find an exact/better match later.
- */
- d = 0;
- done = TRUE;
- #endif
- d = 3;
- }
- }
- break;
-
- case LIST:
- case RECOGNIZE:
-
- if (!is_prefix(target, entry))
- break;
-
- if (exec_check && !executable(exp_dir, entry, dir_ok))
- break;
-
- if (dir_check && !isadirectory(exp_dir, entry))
- break;
-
- if (text_check && isadirectory(exp_dir, entry))
- break;
-
- if (gpat && !Gmatch(entry, pat) && !isadirectory(exp_dir, entry))
- break;
-
- /*
- * Remove duplicates in command listing and completion
- */
- if (looking == TW_COMMAND || command == LIST) {
- copyn(buf, entry, MAXPATHLEN);
- len = Strlen(buf);
- switch (looking) {
- case TW_COMMAND:
- if (!(dir_ok && exec_check))
- break;
- if (filetype(exp_dir, entry) == '/') {
- buf[len++] = '/';
- buf[len] = '\0';
- }
- break;
-
- case TW_FILE:
- case TW_DIRECTORY:
- buf[len++] = filetype(exp_dir, entry);
- buf[len] = '\0';
- break;
-
- default:
- break;
- }
- if (looking == TW_COMMAND && tw_item_find(buf))
- break;
- else {
- /* maximum length 1 (NULL) + 1 (~ or $) + 1 (filetype) */
- ptr = tw_item_add(len + 3);
- copyn(ptr, buf, MAXPATHLEN);
- if (command == LIST)
- numitems++;
- }
- }
-
- if (command == RECOGNIZE) {
- if (ignoring && ignored(entry)) {
- nignored++;
- break;
- }
- if (is_set(STRrecexact)) {
- if (StrQcmp(target, entry) == 0) { /* EXACT match */
- copyn(exp_name, entry, MAXNAMLEN);
- numitems = 1; /* fake into expanding */
- non_unique_match = TRUE;
- done = TRUE;
- break;
- }
- }
- if (recognize(exp_name, entry, name_length, ++numitems))
- done = TRUE;
- }
- break;
-
- default:
- break;
- }
- #ifdef TDEBUG
- xprintf("done entry = %S\n", entry);
- #endif
- }
- if (command == SPELL)
- return d;
- else {
- if (ignoring && numitems == 0 && nignored > 0)
- return -nignored;
- else
- return numitems;
- }
- }
-
-
- /* tw_suffix():
- * Find and return the appropriate suffix character
- */
- static Char
- tw_suffix(looking, exp_dir, exp_name, target, name)
- int looking;
- Char *exp_dir, *exp_name, *target, *name;
- {
- Char *ptr;
- struct varent *vp;
-
- switch (looking) {
-
- case TW_LOGNAME:
- return '/';
-
- case TW_VARIABLE:
- /*
- * Don't consider array variables or empty variables
- */
- if ((vp = adrof(exp_name)) != NULL) {
- if ((ptr = vp->vec[0]) == NULL || *ptr == '\0' ||
- vp->vec[1] != NULL)
- return ' ';
- }
- else if ((ptr = tgetenv(exp_name)) == NULL || *ptr == '\0')
- return ' ';
- *--target = '\0';
- (void) Strcat(exp_dir, name);
- return isadirectory(exp_dir, ptr) ? '/' : ' ';
-
-
- case TW_DIRECTORY:
- return '/';
-
- case TW_COMMAND:
- case TW_FILE:
- return isadirectory(exp_dir, exp_name) ? '/' : ' ';
-
- case TW_ALIAS:
- case TW_VARLIST:
- case TW_WORDLIST:
- case TW_SHELLVAR:
- case TW_ENVVAR:
- case TW_USER:
- case TW_BINDING:
- case TW_LIMIT:
- case TW_SIGNAL:
- case TW_JOB:
- case TW_COMPLETION:
- case TW_TEXT:
- return ' ';
-
- default:
- return '\0';
- }
- } /* end tw_suffix */
-
-
- /* tw_fixword():
- * Repair a word after a spalling or a recognizwe
- */
- static void
- tw_fixword(looking, word, dir, exp_name, max_word_length)
- int looking;
- Char *word, *dir, *exp_name;
- int max_word_length;
- {
- Char *ptr;
-
- switch (looking) {
- case TW_LOGNAME:
- copyn(word, STRtilde, 1);
- break;
-
- case TW_VARIABLE:
- if ((ptr = Strrchr(word, '$')) != NULL)
- *++ptr = '\0'; /* Delete after the dollar */
- else
- word[0] = '\0';
- break;
-
- case TW_DIRECTORY:
- case TW_FILE:
- case TW_TEXT:
- copyn(word, dir, max_word_length); /* put back dir part */
- break;
-
- default:
- word[0] = '\0';
- break;
- }
-
- catn(word, exp_name, max_word_length); /* add extended name */
- } /* end tw_fixword */
-
-
- /* tw_collect():
- * Collect items. Return -1 in case we were interrupted or
- * the return value of tw_collect
- * This is really a wrapper for tw_collect_items, serving two
- * purposes:
- * 1. Handles interrupt cleanups.
- * 2. Retries if we had no matches, but there were ignored matches
- */
- static int
- tw_collect(command, looking, exp_dir, exp_name, target, pat, flags, dir_fd)
- COMMAND command;
- int looking;
- Char *exp_dir, *exp_name, *target, *pat;
- int flags;
- DIR *dir_fd;
- {
- static int ni; /* static so we don't get clobbered */
- jmp_buf_t osetexit;
-
- #ifdef TDEBUG
- xprintf("target = %S\n", target);
- #endif
- ni = 0;
- getexit(osetexit);
- for (;;) {
- (*tw_start_entry[looking])(dir_fd, pat);
- InsideCompletion = 1;
- if (setexit()) {
- /* interrupted, clean up */
- resexit(osetexit);
- InsideCompletion = 0;
- haderr = 0;
- (*tw_end_entry[looking])();
- /* flag error */
- return(-1);
- }
- if ((ni = tw_collect_items(command, looking, exp_dir, exp_name,
- target, pat,
- ni >= 0 ? flags :
- flags & ~TW_IGN_OK)) >= 0) {
- resexit(osetexit);
- InsideCompletion = 0;
- (*tw_end_entry[looking])();
- return(ni);
- }
- }
- } /* end tw_collect */
-
-
- /* tw_list_items():
- * List the items that were found
- */
- static void
- tw_list_items(looking, numitems, list_max)
- int looking, numitems, list_max;
- {
- Char *ptr;
- int max_items = 0;
-
- if ((ptr = value(STRlistmax)) != STRNULL) {
- while (*ptr) {
- if (!Isdigit(*ptr)) {
- max_items = 0;
- break;
- }
- max_items = max_items * 10 + *ptr++ - '0';
- }
- }
-
- if ((max_items > 0) && (numitems > max_items) && list_max) {
- char tc;
-
- xprintf("There are %d items, list them anyway? [n/y] ", numitems);
- flush();
- /* We should be in Rawmode here, so no \n to catch */
- (void) read(SHIN, &tc, 1);
- xprintf("%c\r\n", tc); /* echo the char, do a newline */
- if ((tc != 'y') && (tc != 'Y'))
- return;
- }
-
- if (looking != TW_SIGNAL)
- qsort((ptr_t) tw_item_get(), (size_t) numitems, sizeof(Char *),
- (int (*) __P((const void *, const void *))) fcompare);
- if (looking != TW_JOB)
- print_by_column(STRNULL, tw_item_get(), numitems, TRUE);
- else {
- /*
- * print one item on every line because jobs can have spaces
- * and it is confusing.
- */
- int i;
- Char **w = tw_item_get();
-
- for (i = 0; i < numitems; i++) {
- xprintf("%S", w[i]);
- if (Tty_raw_mode)
- xputchar('\r');
- xputchar('\n');
- }
- }
- } /* end tw_list_items */
-
-
- /* t_search():
- * Perform a RECOGNIZE, LIST or SPELL command on string "word".
- *
- * Return value:
- * >= 0: SPELL command: "distance" (see spdist())
- * other: No. of items found
- * < 0: Error (message or beep is output)
- */
- /*ARGSUSED*/
- int
- t_search(word, wp, command, max_word_length, looking, list_max, pat, suf)
- Char *word, *wp; /* original end-of-word */
- COMMAND command;
- int max_word_length, looking, list_max;
- Char *pat;
- int suf;
- {
- int numitems, /* Number of items matched */
- flags = 0, /* search flags */
- gpat = pat[0] != '\0', /* Glob pattern search */
- nd; /* Normalized directory return */
- Char exp_dir[FILSIZ + 1], /* dir after ~ expansion */
- dir[FILSIZ + 1], /* /x/y/z/ part in /x/y/z/f */
- exp_name[MAXNAMLEN + 1], /* the recognized (extended) */
- name[MAXNAMLEN + 1], /* f part in /d/d/d/f name */
- *target; /* Target to expand/correct/list */
- DIR *dir_fd = NULL;
-
- /*
- * bugfix by Marty Grossman (grossman@CC5.BBN.COM): directory listing can
- * dump core when interrupted
- */
- tw_item_free();
-
- non_unique_match = FALSE; /* See the recexact code below */
-
- extract_dir_and_name(word, dir, name);
- exp_dir[0] = '\0';
-
- /*
- * Try to figure out what we should be looking for
- */
-
- switch (looking) {
- case TW_NONE:
- return -1;
-
- case TW_ZERO:
- looking = TW_FILE;
- break;
-
- case TW_COMMAND:
- if (Strchr(word, '/')) {
- looking = TW_FILE;
- flags |= TW_EXEC_CHK;
- flags |= TW_DIR_OK;
- }
- #ifdef notdef
- /* PWP: don't even bother when doing ALL of the commands */
- if (looking == TW_COMMAND && (*word == '\0'))
- return (-1);
- #endif
- break;
- case TW_PATHNAME:
- gpat = 0; /* pattern holds the pathname to be used */
- copyn(exp_dir, pat, MAXNAMLEN);
- catn(exp_dir, dir, MAXNAMLEN);
- dir[0] = '\0';
- break;
-
- case TW_VARLIST:
- case TW_WORDLIST:
- gpat = 0; /* pattern holds the name of the variable */
- break;
-
- case TW_EXPLAIN:
- if (command == LIST && pat != NULL) {
- xprintf("%S", pat);
- if (Tty_raw_mode)
- xputchar('\r');
- xputchar('\n');
- }
- return 2;
-
- default:
- break;
- }
-
- /*
- * let fignore work only when we are not using a pattern
- */
- flags |= (gpat == 0) ? TW_IGN_OK : TW_PAT_OK;
-
- if ((*word == '~') && (Strchr(word, '/') == NULL)) {
- looking = TW_LOGNAME;
- target = name;
- }
- else if ((target = Strrchr(name, '$')) != 0 &&
- (Strchr(name, '/') == NULL)) {
- target++;
- looking = TW_VARIABLE;
- }
- else
- target = name;
-
- #ifdef TDEBUG
- xprintf("looking = %d\n", looking);
- #endif
-
- switch (looking) {
- case TW_ALIAS:
- case TW_SHELLVAR:
- case TW_ENVVAR:
- case TW_BINDING:
- case TW_LIMIT:
- case TW_SIGNAL:
- case TW_JOB:
- case TW_COMPLETION:
- break;
-
-
- case TW_VARIABLE:
- if ((nd = expand_dir(dir, exp_dir, &dir_fd, command)) != 0)
- return nd;
- break;
-
- case TW_DIRECTORY:
- flags |= TW_DIR_CHK;
-
- #ifdef notyet
- /*
- * This is supposed to expand the directory stack.
- * Problems:
- * 1. Slow
- * 2. directories with the same name
- */
- flags |= TW_DIR_OK;
- #endif
- #ifdef notyet
- /*
- * Supposed to do delayed expansion, but it is inconsistent
- * from a user-interface point of view, since it does not
- * immediately obey addsuffix
- */
- if ((nd = expand_dir(dir, exp_dir, &dir_fd, command)) != 0)
- return nd;
- if (isadirectory(exp_dir, name)) {
- if (exp_dir[0] != '\0' || name[0] != '\0') {
- catn(dir, name, MAXNAMLEN);
- if (dir[Strlen(dir) - 1] != '/')
- catn(dir, STRslash, MAXNAMLEN);
- if ((nd = expand_dir(dir, exp_dir, &dir_fd, command)) != 0)
- return nd;
- if (word[Strlen(word) - 1] != '/')
- catn(word, STRslash, MAXNAMLEN);
- name[0] = '\0';
- }
- }
- #endif
- if ((nd = expand_dir(dir, exp_dir, &dir_fd, command)) != 0)
- return nd;
- break;
-
- case TW_TEXT:
- flags |= TW_TEXT_CHK;
- /*FALLTHROUGH*/
- case TW_FILE:
- if ((nd = expand_dir(dir, exp_dir, &dir_fd, command)) != 0)
- return nd;
- break;
- case TW_PATHNAME:
- if ((dir_fd = opendir(short2str(exp_dir))) == NULL) {
- xprintf("%S: %s\n", exp_dir, strerror(errno));
- return -1;
- }
- looking = TW_FILE;
- break;
-
- case TW_LOGNAME:
- word++;
- /*FALLTHROUGH*/
- case TW_USER:
- /*
- * Check if the spelling was already correct
- * From: Rob McMahon <cudcv@cu.warwick.ac.uk>
- */
- if (command == SPELL && getpwnam(short2str(word)) != NULL) {
- #ifdef YPBUGS
- fix_yp_bugs();
- #endif /* YPBUGS */
- return (0);
- }
- copyn(name, word, MAXNAMLEN); /* name sans ~ */
- if (looking == TW_LOGNAME)
- word--;
- break;
-
- case TW_COMMAND:
- case TW_VARLIST:
- case TW_WORDLIST:
- copyn(target, word, MAXNAMLEN); /* so it can match things */
- break;
-
- default:
- xprintf("\ntcsh internal error: I don't know what I'm looking for!\n");
- NeedsRedraw = 1;
- return (-1);
- }
-
- numitems = tw_collect(command, looking, exp_dir, exp_name,
- target, pat, flags, dir_fd);
- if (numitems == -1)
- return -1;
-
- switch (command) {
- case RECOGNIZE:
- if (numitems <= 0)
- return (numitems);
-
- tw_fixword(looking, word, dir, exp_name, max_word_length);
-
- if (is_set(STRaddsuffix) && numitems == 1) {
- Char suffix[2];
-
- suffix[1] = '\0';
- switch (suf) {
- case 0: /* Automatic suffix */
- suffix[0] = tw_suffix(looking, exp_dir, exp_name, target, name);
- break;
-
- case -1: /* No suffix */
- return numitems;
-
- default: /* completion specified suffix */
- suffix[0] = suf;
- break;
- }
- catn(word, suffix, max_word_length);
- }
- return numitems;
-
- case LIST:
- tw_list_items(looking, numitems, list_max);
- tw_item_free();
- return (numitems);
-
- case SPELL:
- tw_fixword(looking, word, dir, exp_name, max_word_length);
- return (numitems);
-
- default:
- xprintf("Bad tw_command\n");
- return (0);
- }
- } /* end t_search */
-
-
- /* extract_dir_and_name():
- * parse full path in file into 2 parts: directory and file names
- * Should leave final slash (/) at end of dir.
- */
- static void
- extract_dir_and_name(path, dir, name)
- Char *path, *dir, *name;
- {
- register Char *p;
-
- p = Strrchr(path, '/');
- if (p == NULL) {
- copyn(name, path, MAXNAMLEN);
- dir[0] = '\0';
- }
- else {
- p++;
- copyn(name, p, MAXNAMLEN);
- copyn(dir, path, p - path);
- }
- } /* end extract_dir_and_name */
-
-
- /* dollar():
- * expand "/$old1/$old2/old3/"
- * to "/value_of_old1/value_of_old2/old3/"
- */
- static Char *
- dollar(new, old)
- Char *new, *old;
- {
- Char *var, *val, *p, save;
- int space;
-
- for (space = FILSIZ, p = new; *old && space > 0;)
- if (*old != '$') {
- *p++ = *old++;
- space--;
- }
- else {
- struct varent *vp;
-
- /* found a variable, expand it */
- for (var = ++old; alnum(*old); old++)
- continue;
- save = *old;
- *old = '\0';
- vp = adrof(var);
- val = (!vp) ? tgetenv(var) : NULL;
- *old = save;
- if (vp) {
- int i;
- for (i = 0; vp->vec[i] != NULL; i++) {
- for (val = vp->vec[i]; space > 0 && *val; space--)
- *p++ = *val++;
- if (vp->vec[i+1] && space > 0) {
- *p++ = ' ';
- space--;
- }
- }
- }
- else if (val) {
- for (;space > 0 && *val; space--)
- *p++ = *val++;
- }
- else {
- *new = '\0';
- return (NULL);
- }
- }
- *p = '\0';
- return (new);
- } /* end dollar */
-
-
- /* tilde():
- * expand ~person/foo to home_directory_of_person/foo
- * or =<stack-entry> to <dir in stack entry>
- */
- static Char *
- tilde(new, old)
- Char *new, *old;
- {
- register Char *o, *p;
-
- switch (old[0]) {
- case '~':
- for (p = new, o = &old[1]; *o && *o != '/'; *p++ = *o++)
- continue;
- *p = '\0';
- if (gethdir(new)) {
- new[0] = '\0';
- return NULL;
- }
- (void) Strcat(new, o);
- return new;
-
- case '=':
- if ((p = globequal(new, old)) == NULL) {
- *new = '\0';
- return NULL;
- }
- if (p == new)
- return new;
- /*FALLTHROUGH*/
-
- default:
- (void) Strcpy(new, old);
- return new;
- }
- } /* end tilde */
-
-
- /* expand_dir():
- * Open the directory given, expanding ~user and $var
- * Optionally normalize the path given
- */
- static int
- expand_dir(dir, edir, dfd, cmd)
- Char *dir, *edir;
- DIR **dfd;
- COMMAND cmd;
- {
- Char *nd = NULL;
- Char tdir[MAXPATHLEN + 1];
-
- if ((dollar(tdir, dir) == 0) ||
- (tilde(edir, tdir) == 0) ||
- !(nd = dnormalize(*edir ? edir : STRdot, symlinks == SYM_IGNORE ||
- symlinks == SYM_EXPAND)) ||
- ((*dfd = opendir(short2str(nd))) == NULL)) {
- xfree((ptr_t) nd);
- if (cmd == SPELL || SearchNoDirErr)
- return (-2);
- /*
- * From: Amos Shapira <amoss@cs.huji.ac.il>
- * Print a better message when completion fails
- */
- xprintf("\n%S %s\n",
- *edir ? edir :
- (*tdir ? tdir : dir),
- (errno == ENOTDIR ? "not a directory" :
- (errno == ENOENT ? "not found" : "unreadable")));
- NeedsRedraw = 1;
- return (-1);
- }
- if (nd) {
- if (*dir != '\0') {
- Char *s, *d, *p;
-
- /*
- * Copy and append a / if there was one
- */
- for (p = edir; *p; p++)
- continue;
- if (*--p == '/') {
- for (p = nd; *p; p++)
- continue;
- if (*--p != '/')
- p = NULL;
- }
- for (d = edir, s = nd; (*d++ = *s++) != '\0';)
- continue;
- if (!p) {
- *d-- = '\0';
- *d = '/';
- }
- }
- xfree((ptr_t) nd);
- }
- return 0;
- } /* end expand_dir */
-
-
- /* nostat():
- * Returns true if the directory should not be stat'd,
- * false otherwise.
- * This way, things won't grind to a halt when you complete in /afs
- * or very large directories.
- */
- static bool
- nostat(dir)
- Char *dir;
- {
- struct varent *vp;
- register Char **cp;
-
- if ((vp = adrof(STRnostat)) == NULL || (cp = vp->vec) == NULL)
- return FALSE;
- for (; *cp != NULL; cp++) {
- if (Strcmp(*cp, STRstar) == 0)
- return TRUE;
- if (Gmatch(dir, *cp))
- return TRUE;
- }
- return FALSE;
- } /* end nostat */
-
-
- /* filetype():
- * Return a character that signifies a filetype
- * symbology from 4.3 ls command.
- */
- static Char
- filetype(dir, file)
- Char *dir, *file;
- {
- if (dir) {
- Char path[512];
- char *ptr;
- struct stat statb;
-
- if (nostat(dir)) return(' ');
-
- (void) Strcpy(path, dir);
- catn(path, file, sizeof(path) / sizeof(Char));
-
- if (lstat(ptr = short2str(path), &statb) != -1)
- /* see above #define of lstat */
- {
- #ifdef S_ISLNK
- if (S_ISLNK(statb.st_mode)) { /* Symbolic link */
- if (adrof(STRlistlinks)) {
- if (stat(ptr, &statb) == -1)
- return ('&');
- else if (S_ISDIR(statb.st_mode))
- return ('>');
- else
- return ('@');
- }
- else
- return ('@');
- }
- #endif
- #ifdef S_ISSOCK
- if (S_ISSOCK(statb.st_mode)) /* Socket */
- return ('=');
- #endif
- #ifdef S_ISFIFO
- if (S_ISFIFO(statb.st_mode)) /* Named Pipe */
- return ('|');
- #endif
- #ifdef S_ISHIDDEN
- if (S_ISHIDDEN(statb.st_mode)) /* Hidden Directory [aix] */
- return ('+');
- #endif
- #ifdef S_ISCDF
- if (S_ISCDF(statb.st_mode)) /* Context Dependent Files [hpux] */
- return ('+');
- #endif
- #ifdef S_ISNWK
- if (S_ISNWK(statb.st_mode)) /* Network Special [hpux] */
- return (':');
- #endif
- #ifdef S_ISCHR
- if (S_ISCHR(statb.st_mode)) /* char device */
- return ('%');
- #endif
- #ifdef S_ISBLK
- if (S_ISBLK(statb.st_mode)) /* block device */
- return ('#');
- #endif
- #ifdef S_ISDIR
- if (S_ISDIR(statb.st_mode)) /* normal Directory */
- return ('/');
- #endif
- if (statb.st_mode & 0111)
- return ('*');
- }
- }
- return (' ');
- } /* end filetype */
-
-
- /* isadirectory():
- * Return trus if the file is a directory
- */
- static int
- isadirectory(dir, file) /* return 1 if dir/file is a directory */
- Char *dir, *file; /* uses stat rather than lstat to get dest. */
- {
- if (dir) {
- Char path[MAXPATHLEN];
- struct stat statb;
-
- (void) Strcpy(path, dir);
- catn(path, file, sizeof(path) / sizeof(Char));
- if (stat(short2str(path), &statb) >= 0) { /* resolve through
- * symlink */
- #ifdef S_ISSOCK
- if (S_ISSOCK(statb.st_mode)) /* Socket */
- return 0;
- #endif
- #ifdef S_ISFIFO
- if (S_ISFIFO(statb.st_mode)) /* Named Pipe */
- return 0;
- #endif
- if (S_ISDIR(statb.st_mode)) /* normal Directory */
- return 1;
- }
- }
- return 0;
- } /* end isadirectory */
-
-
- /* print_by_column():
- * Print sorted down columns
- */
- void
- print_by_column(dir, items, count, no_file_suffix)
- register Char *dir, *items[];
- int count, no_file_suffix;
- {
- register int i, r, c, columns, rows;
- unsigned int w, maxwidth = 0;
-
- lbuffed = 0; /* turn off line buffering */
-
- for (i = 0; i < count; i++) /* find widest string */
- maxwidth = max(maxwidth, Strlen(items[i]));
-
- maxwidth += no_file_suffix ? 1 : 2; /* for the file tag and space */
- columns = (TermH + 1) / maxwidth; /* PWP: terminal size change */
- if (!columns)
- columns = 1;
- rows = (count + (columns - 1)) / columns;
-
- for (r = 0; r < rows; r++) {
- for (c = 0; c < columns; c++) {
- i = c * rows + r;
-
- if (i < count) {
- w = Strlen(items[i]);
-
- if (no_file_suffix) {
- /* Print the command name */
- xprintf("%S", items[i]);
- }
- else {
- /* Print filename followed by '/' or '*' or ' ' */
- xprintf("%S%c", items[i],
- filetype(dir, items[i]));
- w++;
- }
-
- if (c < (columns - 1)) /* Not last column? */
- for (; w < maxwidth; w++)
- xputchar(' ');
- }
- }
- if (Tty_raw_mode)
- xputchar('\r');
- xputchar('\n');
- }
-
- lbuffed = 1; /* turn back on line buffering */
- flush();
- } /* end print_by_column */
-
-
- /* StrQcmp():
- * Compare strings ignoring the quoting chars
- */
- int
- StrQcmp(str1, str2)
- register Char *str1, *str2;
- {
- for (; *str1 && (*str1 & TRIM) == (*str2 & TRIM); str1++, str2++)
- continue;
- /*
- * The following case analysis is necessary so that characters which look
- * negative collate low against normal characters but high against the
- * end-of-string NUL.
- */
- if (*str1 == '\0' && *str2 == '\0')
- return (0);
- else if (*str1 == '\0')
- return (-1);
- else if (*str2 == '\0')
- return (1);
- else
- return ((*str1 & TRIM) - (*str2 & TRIM));
- } /* end StrQcmp */
-
-
- /* fcompare():
- * Comparison routine for qsort
- */
- int
- fcompare(file1, file2)
- Char **file1, **file2;
- {
- return (int) collate(*file1, *file2);
- } /* end fcompare */
-
-
- /* catn():
- * Concatenate src onto tail of des.
- * Des is a string whose maximum length is count.
- * Always null terminate.
- */
- void
- catn(des, src, count)
- register Char *des, *src;
- register count;
- {
- while (--count >= 0 && *des)
- des++;
- while (--count >= 0)
- if ((*des++ = *src++) == 0)
- return;
- *des = '\0';
- } /* end catn */
-
-
- /* copyn():
- * like strncpy but always leave room for trailing \0
- * and always null terminate.
- */
- void
- copyn(des, src, count)
- register Char *des, *src;
- register count;
- {
- while (--count >= 0)
- if ((*des++ = *src++) == 0)
- return;
- *des = '\0';
- } /* end copyn */
-
-
- /* tgetenv():
- * like it's normal string counter-part
- * [apollo uses that in tc.os.c, so it cannot be static]
- */
- Char *
- tgetenv(str)
- Char *str;
- {
- Char **var;
- int len, res;
-
- len = Strlen(str);
- for (var = STR_environ; var != NULL && *var != NULL; var++)
- if ((*var)[len] == '=') {
- (*var)[len] = '\0';
- res = StrQcmp(*var, str);
- (*var)[len] = '=';
- if (res == 0)
- return (&((*var)[len + 1]));
- }
- return (NULL);
- } /* end tgetenv */
-