+++ /dev/null
-/****************************************************************************
- * Copyright (c) 1998 Free Software Foundation, Inc. *
- * *
- * Permission is hereby granted, free of charge, to any person obtaining a *
- * copy of this software and associated documentation files (the *
- * "Software"), to deal in the Software without restriction, including *
- * without limitation the rights to use, copy, modify, merge, publish, *
- * distribute, distribute with modifications, sublicense, and/or sell *
- * copies of the Software, and to permit persons to whom the Software is *
- * furnished to do so, subject to the following conditions: *
- * *
- * The above copyright notice and this permission notice shall be included *
- * in all copies or substantial portions of the Software. *
- * *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
- * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
- * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
- * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
- * THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
- * *
- * Except as contained in this notice, the name(s) of the above copyright *
- * holders shall not be used in advertising or otherwise to promote the *
- * sale, use or other dealings in this Software without prior written *
- * authorization. *
- ****************************************************************************/
-
-/****************************************************************************
- * Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 *
- * and: Eric S. Raymond <esr@snark.thyrsus.com> *
- ****************************************************************************/
-
-
-/*
- * Termcap compatibility support
- *
- * If your OS integrator didn't install a terminfo database, you can call
- * _nc_read_termcap_entry() to support reading and translating capabilities
- * from the system termcap file. This is a kludge; it will bulk up and slow
- * down every program that uses ncurses, and translated termcap entries cannot
- * use full terminfo capabilities. Don't use it unless you absolutely have to;
- * instead, get your system people to run tic(1) from root on the terminfo
- * master included with ncurses to translate it into a terminfo database.
- *
- * If USE_GETCAP is enabled, we use what is effectively a copy of the 4.4BSD
- * getcap code to fetch entries. There are disadvantages to this; mainly that
- * getcap(3) does its own resolution, meaning that entries read in in this way
- * can't reference the terminfo tree. The only thing it buys is faster startup
- * time, getcap(3) is much faster than our tic parser.
- */
-
-#include <curses.priv.h>
-
-#include <ctype.h>
-#include <term.h>
-#include <tic.h>
-#include <term_entry.h>
-
-#if HAVE_FCNTL_H
-#include <fcntl.h>
-#endif
-
-MODULE_ID("$Id: read_termcap.c,v 1.27 1998/02/11 12:13:58 tom Exp $")
-
-#ifdef __EMX__
-#define is_pathname(s) ((((s) != 0) && ((s)[0] == '/')) \
- || (((s)[0] != 0) && ((s)[1] == ':')))
-#else
-#define is_pathname(s) ((s) != 0 && (s)[0] == '/')
-#endif
-
-#define TC_SUCCESS 0
-#define TC_UNRESOLVED -1
-#define TC_NOT_FOUND -2
-#define TC_SYS_ERR -3
-#define TC_REF_LOOP -4
-
-#if USE_GETCAP
-
-#if HAVE_BSD_CGETENT
-#define _nc_cgetcap cgetcap
-#define _nc_cgetent(buf, oline, db_array, name) cgetent(buf, db_array, name)
-#define _nc_cgetmatch cgetmatch
-#define _nc_cgetset cgetset
-#else
-static int _nc_cgetmatch(char *, const char *);
-static int _nc_getent(char **, unsigned int *, int *, int, char **, int, const char *, int, char *);
-static int _nc_nfcmp(const char *, char *);
-
-/*-
- * Copyright (c) 1992, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Casey Leedom of Lawrence Livermore National Laboratory.
- *
- * 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 acknowledgment:
- * 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.
- */
-
-/* static char sccsid[] = "@(#)getcap.c 8.3 (Berkeley) 3/25/94"; */
-
-#define BFRAG 1024
-#define BSIZE 1024
-#define ESC ('[' & 037) /* ASCII ESC */
-#define MAX_RECURSION 32 /* maximum getent recursion */
-#define SFRAG 100 /* cgetstr mallocs in SFRAG chunks */
-
-#define RECOK (char)0
-#define TCERR (char)1
-#define SHADOW (char)2
-
-static size_t topreclen; /* toprec length */
-static char *toprec; /* Additional record specified by cgetset() */
-static int gottoprec; /* Flag indicating retrieval of toprecord */
-
-/*
- * Cgetset() allows the addition of a user specified buffer to be added to the
- * database array, in effect "pushing" the buffer on top of the virtual
- * database. 0 is returned on success, -1 on failure.
- */
-static int
-_nc_cgetset(const char *ent)
-{
- if (ent == 0) {
- FreeIfNeeded(toprec);
- toprec = 0;
- topreclen = 0;
- return (0);
- }
- topreclen = strlen(ent);
- if ((toprec = malloc (topreclen + 1)) == 0) {
- errno = ENOMEM;
- return (-1);
- }
- gottoprec = 0;
- (void)strcpy(toprec, ent);
- return (0);
-}
-
-/*
- * Cgetcap searches the capability record buf for the capability cap with type
- * `type'. A pointer to the value of cap is returned on success, 0 if the
- * requested capability couldn't be found.
- *
- * Specifying a type of ':' means that nothing should follow cap (:cap:). In
- * this case a pointer to the terminating ':' or NUL will be returned if cap is
- * found.
- *
- * If (cap, '@') or (cap, terminator, '@') is found before (cap, terminator)
- * return 0.
- */
-static char *
-_nc_cgetcap(char *buf, const char *cap, int type)
-{
- register const char *cp;
- register char *bp;
-
- bp = buf;
- for (;;) {
- /*
- * Skip past the current capability field - it's either the
- * name field if this is the first time through the loop, or
- * the remainder of a field whose name failed to match cap.
- */
- for (;;) {
- if (*bp == '\0')
- return (0);
- else if (*bp++ == ':')
- break;
- }
-
- /*
- * Try to match (cap, type) in buf.
- */
- for (cp = cap; *cp == *bp && *bp != '\0'; cp++, bp++)
- continue;
- if (*cp != '\0')
- continue;
- if (*bp == '@')
- return (0);
- if (type == ':') {
- if (*bp != '\0' && *bp != ':')
- continue;
- return(bp);
- }
- if (*bp != type)
- continue;
- bp++;
- return (*bp == '@' ? 0 : bp);
- }
- /* NOTREACHED */
-}
-
-/*
- * Cgetent extracts the capability record name from the NULL terminated file
- * array db_array and returns a pointer to a malloc'd copy of it in buf. Buf
- * must be retained through all subsequent calls to cgetcap, cgetnum, cgetflag,
- * and cgetstr, but may then be freed.
- *
- * Returns:
- *
- * positive # on success (i.e., the index in db_array)
- * TC_UNRESOLVED if we had too many recurrences to resolve
- * TC_NOT_FOUND if the requested record couldn't be found
- * TC_SYS_ERR if a system error was encountered (e.g.,couldn't open a file)
- * TC_REF_LOOP if a potential reference loop is detected
- */
-static int
-_nc_cgetent(char **buf, int *oline, char **db_array, const char *name)
-{
- unsigned int dummy;
-
- return (_nc_getent(buf, &dummy, oline, 0, db_array, -1, name, 0, 0));
-}
-
-/*
- * Getent implements the functions of cgetent. If fd is non-negative,
- * *db_array has already been opened and fd is the open file descriptor. We
- * do this to save time and avoid using up file descriptors for tc=
- * recursions.
- *
- * Getent returns the same success/failure codes as cgetent. On success, a
- * pointer to a malloc'd capability record with all tc= capabilities fully
- * expanded and its length (not including trailing ASCII NUL) are left in
- * *cap and *len.
- *
- * Basic algorithm:
- * + Allocate memory incrementally as needed in chunks of size BFRAG
- * for capability buffer.
- * + Recurse for each tc=name and interpolate result. Stop when all
- * names interpolated, a name can't be found, or depth exceeds
- * MAX_RECURSION.
- */
-static int
-_nc_getent(
- char **cap, /* termcap-content */
- unsigned int *len, /* length, needed for recursion */
- int *beginning, /* line-number at match */
- int in_array, /* index in 'db_array[] */
- char **db_array, /* list of files to search */
- int fd,
- const char *name,
- int depth,
- char *nfield)
-{
- register char *r_end, *rp;
- int myfd = FALSE;
- char *record;
- int tc_not_resolved;
- int current;
- int lineno;
-
- /*
- * Return with ``loop detected'' error if we've recurred more than
- * MAX_RECURSION times.
- */
- if (depth > MAX_RECURSION)
- return (TC_REF_LOOP);
-
- /*
- * Check if we have a top record from cgetset().
- */
- if (depth == 0 && toprec != 0 && _nc_cgetmatch(toprec, name) == 0) {
- if ((record = malloc (topreclen + BFRAG)) == 0) {
- errno = ENOMEM;
- return (TC_SYS_ERR);
- }
- (void)strcpy(record, toprec);
- rp = record + topreclen + 1;
- r_end = rp + BFRAG;
- current = in_array;
- } else {
- int foundit;
-
- /*
- * Allocate first chunk of memory.
- */
- if ((record = malloc(BFRAG)) == 0) {
- errno = ENOMEM;
- return (TC_SYS_ERR);
- }
- rp = r_end = record + BFRAG;
- foundit = FALSE;
-
- /*
- * Loop through database array until finding the record.
- */
- for (current = in_array; db_array[current] != 0; current++) {
- int eof = FALSE;
-
- /*
- * Open database if not already open.
- */
- if (fd >= 0) {
- (void)lseek(fd, (off_t)0, SEEK_SET);
- } else {
- fd = open(db_array[current], O_RDONLY, 0);
- if (fd < 0) {
- /* No error on unfound file. */
- if (errno == ENOENT)
- continue;
- free(record);
- return (TC_SYS_ERR);
- }
- myfd = TRUE;
- }
- lineno = 0;
-
- /*
- * Find the requested capability record ...
- */
- {
- char buf[2048];
- register char *b_end = buf;
- register char *bp = buf;
- register int c;
-
- /*
- * Loop invariants:
- * There is always room for one more character in record.
- * R_end always points just past end of record.
- * Rp always points just past last character in record.
- * B_end always points just past last character in buf.
- * Bp always points at next character in buf.
- */
-
- for (;;) {
- int first = lineno + 1;
-
- /*
- * Read in a line implementing (\, newline)
- * line continuation.
- */
- rp = record;
- for (;;) {
- if (bp >= b_end) {
- int n;
-
- n = read(fd, buf, sizeof(buf));
- if (n <= 0) {
- if (myfd)
- (void)close(fd);
- if (n < 0) {
- free(record);
- return (TC_SYS_ERR);
- }
- fd = -1;
- eof = TRUE;
- break;
- }
- b_end = buf+n;
- bp = buf;
- }
-
- c = *bp++;
- if (c == '\n') {
- lineno++;
- if (rp == record || *(rp-1) != '\\')
- break;
- }
- *rp++ = c;
-
- /*
- * Enforce loop invariant: if no room
- * left in record buffer, try to get
- * some more.
- */
- if (rp >= r_end) {
- unsigned int pos;
- size_t newsize;
-
- pos = rp - record;
- newsize = r_end - record + BFRAG;
- record = realloc(record, newsize);
- if (record == 0) {
- errno = ENOMEM;
- if (myfd)
- (void)close(fd);
- return (TC_SYS_ERR);
- }
- r_end = record + newsize;
- rp = record + pos;
- }
- }
- /* loop invariant lets us do this */
- *rp++ = '\0';
-
- /*
- * If encountered eof check next file.
- */
- if (eof)
- break;
-
- /*
- * Toss blank lines and comments.
- */
- if (*record == '\0' || *record == '#')
- continue;
-
- /*
- * See if this is the record we want ...
- */
- if (_nc_cgetmatch(record, name) == 0
- && (nfield == 0
- || !_nc_nfcmp(nfield, record))) {
- foundit = TRUE;
- *beginning = first;
- break; /* found it! */
- }
- }
- }
- if (foundit)
- break;
- }
-
- if (!foundit)
- return (TC_NOT_FOUND);
- }
-
- /*
- * Got the capability record, but now we have to expand all tc=name
- * references in it ...
- */
- {
- register char *newicap, *s;
- register int newilen;
- unsigned int ilen;
- int diff, iret, tclen, oline;
- char *icap, *scan, *tc, *tcstart, *tcend;
-
- /*
- * Loop invariants:
- * There is room for one more character in record.
- * R_end points just past end of record.
- * Rp points just past last character in record.
- * Scan points at remainder of record that needs to be
- * scanned for tc=name constructs.
- */
- scan = record;
- tc_not_resolved = FALSE;
- for (;;) {
- if ((tc = _nc_cgetcap(scan, "tc", '=')) == 0)
- break;
-
- /*
- * Find end of tc=name and stomp on the trailing `:'
- * (if present) so we can use it to call ourselves.
- */
- s = tc;
- while (*s != '\0') {
- if (*s++ == ':') {
- *(s - 1) = '\0';
- break;
- }
- }
- tcstart = tc - 3;
- tclen = s - tcstart;
- tcend = s;
-
- iret = _nc_getent(&icap, &ilen, &oline, current, db_array, fd, tc, depth+1, 0);
- newicap = icap; /* Put into a register. */
- newilen = ilen;
- if (iret != TC_SUCCESS) {
- /* an error */
- if (iret < TC_NOT_FOUND) {
- if (myfd)
- (void)close(fd);
- free(record);
- return (iret);
- }
- if (iret == TC_UNRESOLVED)
- tc_not_resolved = TRUE;
- /* couldn't resolve tc */
- if (iret == TC_NOT_FOUND) {
- *(s - 1) = ':';
- scan = s - 1;
- tc_not_resolved = TRUE;
- continue;
- }
- }
-
- /* not interested in name field of tc'ed record */
- s = newicap;
- while (*s != '\0' && *s++ != ':')
- ;
- newilen -= s - newicap;
- newicap = s;
-
- /* make sure interpolated record is `:'-terminated */
- s += newilen;
- if (*(s-1) != ':') {
- *s = ':'; /* overwrite NUL with : */
- newilen++;
- }
-
- /*
- * Make sure there's enough room to insert the
- * new record.
- */
- diff = newilen - tclen;
- if (diff >= r_end - rp) {
- unsigned int pos, tcpos, tcposend;
- size_t newsize;
-
- pos = rp - record;
- newsize = r_end - record + diff + BFRAG;
- tcpos = tcstart - record;
- tcposend = tcend - record;
- record = realloc(record, newsize);
- if (record == 0) {
- errno = ENOMEM;
- if (myfd)
- (void)close(fd);
- free(icap);
- return (TC_SYS_ERR);
- }
- r_end = record + newsize;
- rp = record + pos;
- tcstart = record + tcpos;
- tcend = record + tcposend;
- }
-
- /*
- * Insert tc'ed record into our record.
- */
- s = tcstart + newilen;
- memmove(s, tcend, (size_t)(rp - tcend));
- memmove(tcstart, newicap, (size_t)newilen);
- rp += diff;
- free(icap);
-
- /*
- * Start scan on `:' so next cgetcap works properly
- * (cgetcap always skips first field).
- */
- scan = s-1;
- }
- }
-
- /*
- * Close file (if we opened it), give back any extra memory, and
- * return capability, length and success.
- */
- if (myfd)
- (void)close(fd);
- *len = rp - record - 1; /* don't count NUL */
- if (r_end > rp) {
- if ((record = realloc(record, (size_t)(rp - record))) == 0) {
- errno = ENOMEM;
- return (TC_SYS_ERR);
- }
- }
-
- *cap = record;
- if (tc_not_resolved)
- return (TC_UNRESOLVED);
- return (current);
-}
-
-/*
- * Cgetmatch will return 0 if name is one of the names of the capability
- * record buf, -1 if not.
- */
-static int
-_nc_cgetmatch(char *buf, const char *name)
-{
- register const char *np;
- register char *bp;
-
- /*
- * Start search at beginning of record.
- */
- bp = buf;
- for (;;) {
- /*
- * Try to match a record name.
- */
- np = name;
- for (;;) {
- if (*np == '\0') {
- if (*bp == '|' || *bp == ':' || *bp == '\0')
- return (0);
- else
- break;
- } else if (*bp++ != *np++) {
- break;
- }
- }
-
- /*
- * Match failed, skip to next name in record.
- */
- bp--; /* a '|' or ':' may have stopped the match */
- for (;;) {
- if (*bp == '\0' || *bp == ':')
- return (-1); /* match failed totally */
- else if (*bp++ == '|')
- break; /* found next name */
- }
- }
-}
-
-/*
- * Compare name field of record.
- */
-static int
-_nc_nfcmp(const char *nf, char *rec)
-{
- char *cp, tmp;
- int ret;
-
- for (cp = rec; *cp != ':'; cp++)
- ;
-
- tmp = *(cp + 1);
- *(cp + 1) = '\0';
- ret = strcmp(nf, rec);
- *(cp + 1) = tmp;
-
- return (ret);
-}
-#endif /* HAVE_BSD_CGETENT */
-
-/*
- * Since ncurses provides its own 'tgetent()', we cannot use the native one.
- * So we reproduce the logic to get down to cgetent() -- or our cut-down
- * version of that -- to circumvent the problem of configuring against the
- * termcap library.
- */
-#define USE_BSD_TGETENT 1
-
-#if USE_BSD_TGETENT
-/*
- * Copyright (c) 1980, 1993
- * 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 acknowledgment:
- * 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.
- */
-
-/* static char sccsid[] = "@(#)termcap.c 8.1 (Berkeley) 6/4/93" */
-
-#define PBUFSIZ 512 /* max length of filename path */
-#define PVECSIZ 32 /* max number of names in path */
-#define TBUFSIZ (2048*2)
-
-static char *tbuf;
-
-/*
- * On entry, srcp points to a non ':' character which is the beginning of the
- * token, if any. We'll try to return a string that doesn't end with a ':'.
- */
-static char *
-get_tc_token(char **srcp, int *endp)
-{
- int ch;
- bool found = FALSE;
- char *s, *base;
- char *tok = 0;
-
- *endp = TRUE;
- for (s = base = *srcp; *s != '\0'; ) {
- ch = *s++;
- if (ch == '\\') {
- if (*s == '\0') {
- break;
- } else if (*s++ == '\n') {
- while (isspace(*s))
- s++;
- } else {
- found = TRUE;
- }
- } else if (ch == ':') {
- if (found) {
- tok = base;
- s[-1] = '\0';
- *srcp = s;
- *endp = FALSE;
- break;
- }
- base = s;
- } else if (isgraph(ch)) {
- found = TRUE;
- }
- }
-
- /* malformed entry may end without a ':' */
- if (tok == 0 && found) {
- tok = base;
- }
-
- return tok;
-}
-
-static char *
-copy_tc_token(char *dst, const char *src, size_t len)
-{
- int ch;
-
- while ((ch = *src++) != '\0') {
- if (ch == '\\' && *src == '\n') {
- while (isspace(*src))
- src++;
- continue;
- }
- if (--len == 0) {
- dst = 0;
- break;
- }
- *dst++ = ch;
- }
- return dst;
-}
-
-/*
- * Get an entry for terminal name in buffer bp from the termcap file.
- */
-static int
-_nc_tgetent(char *bp, char **sourcename, int *lineno, const char *name)
-{
- static char *the_source;
-
- register char *p;
- register char *cp;
- char *dummy;
- char **fname;
- char *home;
- int i;
- char pathbuf[PBUFSIZ]; /* holds raw path of filenames */
- char *pathvec[PVECSIZ]; /* to point to names in pathbuf */
- char **pvec; /* holds usable tail of path vector */
- char *termpath;
-
- fname = pathvec;
- pvec = pathvec;
- tbuf = bp;
- p = pathbuf;
- cp = getenv("TERMCAP");
-
- /*
- * TERMCAP can have one of two things in it. It can be the name of a
- * file to use instead of /etc/termcap. In this case it better start
- * with a "/". Or it can be an entry to use so we don't have to read
- * the file. In this case it has to already have the newlines crunched
- * out. If TERMCAP does not hold a file name then a path of names is
- * searched instead. The path is found in the TERMPATH variable, or
- * becomes "$HOME/.termcap /etc/termcap" if no TERMPATH exists.
- */
- if (!is_pathname(cp)) { /* no TERMCAP or it holds an entry */
- if ((termpath = getenv("TERMPATH")) != 0) {
- strncpy(pathbuf, termpath, sizeof(pathbuf)-1);
- } else {
- if ((home = getenv("HOME")) != 0) { /* setup path */
- p += strlen(home); /* path, looking in */
- strcpy(pathbuf, home); /* $HOME first */
- *p++ = '/';
- } /* if no $HOME look in current directory */
-#define MY_PATH_DEF ".termcap /etc/termcap /usr/share/misc/termcap"
- strncpy(p, MY_PATH_DEF, (size_t)(PBUFSIZ - (p - pathbuf)));
- }
- }
- else /* user-defined name in TERMCAP */
- strncpy(pathbuf, cp, PBUFSIZ); /* still can be tokenized */
-
- *fname++ = pathbuf; /* tokenize path into vector of names */
- while (*++p) {
- if (*p == ' ' || *p == ':') {
- *p = '\0';
- while (*++p)
- if (*p != ' ' && *p != ':')
- break;
- if (*p == '\0')
- break;
- *fname++ = p;
- if (fname >= pathvec + PVECSIZ) {
- fname--;
- break;
- }
- }
- }
- *fname = 0; /* mark end of vector */
- if (is_pathname(cp)) {
- if (_nc_cgetset(cp) < 0) {
- return(TC_SYS_ERR);
- }
- }
-
- i = _nc_cgetent(&dummy, lineno, pathvec, name);
-
- /* ncurses' termcap-parsing routines cannot handle multiple adjacent
- * empty fields, and mistakenly use the last valid cap entry instead of
- * the first (breaks tc= includes)
- */
- if (i >= 0) {
- char *pd, *ps, *tok;
- int endflag = FALSE;
- char *list[1023];
- size_t n, count = 0;
-
- pd = bp;
- ps = dummy;
- while (!endflag && (tok = get_tc_token(&ps, &endflag)) != 0) {
- bool ignore = FALSE;
-
- for (n = 1; n < count; n++) {
- char *s = list[n];
- if (s[0] == tok[0]
- && s[1] == tok[1]) {
- ignore = TRUE;
- break;
- }
- }
- if (ignore != TRUE) {
- list[count++] = tok;
- pd = copy_tc_token(pd, tok, TBUFSIZ - (2+pd-bp));
- if (pd == 0) {
- i = -1;
- break;
- }
- *pd++ = ':';
- *pd = '\0';
- }
- }
- }
-
- FreeIfNeeded(dummy);
- FreeIfNeeded(the_source);
- the_source = 0;
-
- /* This is not related to the BSD cgetent(), but to fake up a suitable
- * filename for ncurses' error reporting. (If we are not using BSD
- * cgetent, then it is the actual filename).
- */
- if (i >= 0) {
- the_source = malloc(strlen(pathvec[i]) + 1);
- if (the_source != 0)
- *sourcename = strcpy(the_source, pathvec[i]);
- }
-
- return(i);
-}
-#endif /* USE_BSD_TGETENT */
-#endif /* USE_GETCAP */
-
-int _nc_read_termcap_entry(const char *const tn, TERMTYPE *const tp)
-{
- int found = FALSE;
- ENTRY *ep;
-#if USE_GETCAP_CACHE
- char cwd_buf[PATH_MAX];
-#endif
-#if USE_GETCAP
- char tc[TBUFSIZ];
- static char *source;
- static int lineno;
-
- /* we're using getcap(3) */
- if (_nc_tgetent(tc, &source, &lineno, tn) < 0)
- return (ERR);
-
- _nc_curr_line = lineno;
- _nc_set_source(source);
- _nc_read_entry_source((FILE *)0, tc, FALSE, FALSE, NULLHOOK);
-#else
- /*
- * Here is what the 4.4BSD termcap(3) page prescribes:
- *
- * It will look in the environment for a TERMCAP variable. If found,
- * and the value does not begin with a slash, and the terminal type
- * name is the same as the environment string TERM, the TERMCAP string
- * is used instead of reading a termcap file. If it does begin with a
- * slash, the string is used as a path name of the termcap file to
- * search. If TERMCAP does not begin with a slash and name is
- * different from TERM, tgetent() searches the files $HOME/.termcap and
- * /usr/share/misc/termcap, in that order, unless the environment
- * variable TERMPATH exists, in which case it specifies a list of file
- * pathnames (separated by spaces or colons) to be searched instead.
- *
- * It goes on to state:
- *
- * Whenever multiple files are searched and a tc field occurs in the
- * requested entry, the entry it names must be found in the same file
- * or one of the succeeding files.
- *
- * However, this restriction is relaxed in ncurses; tc references to
- * previous files are permitted.
- *
- * This routine returns 1 if an entry is found, 0 if not found, and -1
- * if the database is not accessible.
- */
- FILE *fp;
-#define MAXPATHS 32
- char *tc, *termpaths[MAXPATHS];
- int filecount = 0;
- bool use_buffer = FALSE;
- char tc_buf[1024];
- char pathbuf[PATH_MAX];
-
- if ((tc = getenv("TERMCAP")) != 0)
- {
- if (is_pathname(tc)) /* interpret as a filename */
- {
- termpaths[0] = tc;
- termpaths[filecount = 1] = 0;
- }
- else if (_nc_name_match(tc, tn, "|:")) /* treat as a capability file */
- {
- use_buffer = TRUE;
- (void) sprintf(tc_buf, "%.*s\n", (int)sizeof(tc_buf)-2, tc);
- }
- else if ((tc = getenv("TERMPATH")) != 0)
- {
- char *cp;
-
- for (cp = tc; *cp; cp++)
- {
- if (*cp == ':')
- *cp = '\0';
- else if (cp == tc || cp[-1] == '\0')
- {
- if (filecount >= MAXPATHS - 1)
- return(-1);
-
- termpaths[filecount++] = cp;
- }
- }
- termpaths[filecount] = 0;
- }
- }
- else /* normal case */
- {
- char envhome[PATH_MAX], *h;
-
- filecount = 0;
-
- /*
- * Probably /etc/termcap is a symlink to /usr/share/misc/termcap.
- * Avoid reading the same file twice.
- */
- if (access("/etc/termcap", R_OK) == 0)
- termpaths[filecount++] = "/etc/termcap";
- else if (access("/usr/share/misc/termcap", R_OK) == 0)
- termpaths[filecount++] = "/usr/share/misc/termcap";
-
- if ((h = getenv("HOME")) != (char *)NULL)
- {
- /* user's .termcap, if any, should override it */
- (void) strncpy(envhome, h, PATH_MAX - 10);
- envhome[PATH_MAX - 10] = '\0';
- (void) sprintf(pathbuf, "%s/.termcap", envhome);
- termpaths[filecount++] = pathbuf;
- }
-
- termpaths[filecount] = 0;
- }
-
- /* parse the sources */
- if (use_buffer)
- {
- _nc_set_source("TERMCAP");
-
- /*
- * We don't suppress warning messages here. The presumption is
- * that since it's just a single entry, they won't be a pain.
- */
- _nc_read_entry_source((FILE *)0, tc_buf, FALSE, FALSE, NULLHOOK);
- } else {
- int i;
-
- for (i = 0; i < filecount; i++) {
-
- T(("Looking for %s in %s", tn, termpaths[i]));
- if ((fp = fopen(termpaths[i], "r")) != (FILE *)0)
- {
- _nc_set_source(termpaths[i]);
-
- /*
- * Suppress warning messages. Otherwise you
- * get 400 lines of crap from archaic termcap
- * files as ncurses complains about all the
- * obsolete capabilities.
- */
- _nc_read_entry_source(fp, (char*)0, FALSE, TRUE, NULLHOOK);
-
- (void) fclose(fp);
- }
- }
- }
-#endif /* USE_GETCAP */
-
- if (_nc_head == 0)
- return(ERR);
-
- /* resolve all use references */
- _nc_resolve_uses();
-
- /* find a terminal matching tn, if we can */
-#if USE_GETCAP_CACHE
- if (getcwd(cwd_buf, sizeof(cwd_buf)) != 0)
- {
- _nc_set_writedir((char *)0); /* note: this does a chdir */
-#endif
- for_entry_list(ep) {
- if (_nc_name_match(ep->tterm.term_names, tn, "|:"))
- {
- /*
- * Make a local copy of the terminal
- * capabilities. Free all entry storage except
- * the string table for the loaded type (which
- * we disconnected from the list by NULLing out
- * ep->tterm.str_table above).
- */
- memcpy(tp, &ep->tterm, sizeof(TERMTYPE));
- ep->tterm.str_table = (char *)0;
-
- /*
- * OK, now try to write the type to user's
- * terminfo directory. Next time he loads
- * this, it will come through terminfo.
- *
- * Advantage: Second and subsequent fetches of
- * this entry will be very fast.
- *
- * Disadvantage: After the first time a
- * termcap type is loaded by its user, editing
- * it in the /etc/termcap file, or in TERMCAP,
- * or in a local ~/.termcap, will be
- * ineffective unless the terminfo entry is
- * explicitly removed.
- */
-#if USE_GETCAP_CACHE
- (void) _nc_write_entry(tp);
-#endif
- found = TRUE;
- break;
- }
- }
-#if USE_GETCAP_CACHE
- chdir(cwd_buf);
- }
-#endif
-
- _nc_free_entries(_nc_head);
- return(found);
-}
projects / ncurses.git / blobdiff