X-Git-Url: https://ncurses.scripts.mit.edu/?p=ncurses.git;a=blobdiff_plain;f=ncurses%2Fread_termcap.c;fp=ncurses%2Fread_termcap.c;h=d67a3bc9c3c55288cdeca13c8c7b512476193cb4;hp=3243694d9d1c9849d65c1fa741d00de0d3df8a9b;hb=661078ddbde3ce0f3b06e95642fbb9b5fef7dca1;hpb=3a9b6a3bf0269231bef7de74757a910dedd04e0c diff --git a/ncurses/read_termcap.c b/ncurses/read_termcap.c index 3243694d..d67a3bc9 100644 --- a/ncurses/read_termcap.c +++ b/ncurses/read_termcap.c @@ -1,23 +1,35 @@ - -/*************************************************************************** -* COPYRIGHT NOTICE * -**************************************************************************** -* ncurses is copyright (C) 1992-1995 * -* Zeyd M. Ben-Halim * -* zmbenhal@netcom.com * -* Eric S. Raymond * -* esr@snark.thyrsus.com * -* * -* Permission is hereby granted to reproduce and distribute ncurses * -* by any means and for any fee, whether alone or as part of a * -* larger distribution, in source or in binary form, PROVIDED * -* this notice is included with any such distribution, and is not * -* removed from any of its header files. Mention of ncurses in any * -* applications linked with it is highly appreciated. * -* * -* ncurses comes AS IS with no warranty, implied or expressed. * -* * -***************************************************************************/ +/**************************************************************************** + * 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 1992,1995 * + * and: Eric S. Raymond * + ****************************************************************************/ /* @@ -40,6 +52,7 @@ #include +#include #include #include #include @@ -48,7 +61,14 @@ #include #endif -MODULE_ID("$Id: read_termcap.c,v 1.21 1996/12/21 14:24:06 tom Exp $") +MODULE_ID("$Id: read_termcap.c,v 1.27 1998/02/11 12:13:58 tom Exp $") + +#ifdef __EMX__ +#define is_pathname(s) ((((s) != 0) && ((s)[0] == '/')) \ + || (((s)[0] != 0) && ((s)[1] == ':'))) +#else +#define is_pathname(s) ((s) != 0 && (s)[0] == '/') +#endif #define TC_SUCCESS 0 #define TC_UNRESOLVED -1 @@ -56,158 +76,17 @@ MODULE_ID("$Id: read_termcap.c,v 1.21 1996/12/21 14:24:06 tom Exp $") #define TC_SYS_ERR -3 #define TC_REF_LOOP -4 -#ifdef USE_GETCAP -/* - * 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 */ +#if USE_GETCAP -static char *_nc_cgetcap(char *, const char *, int); -static int _nc_cgetent(char **, int *, char **, const char *); +#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_cgetset(const char *); static int _nc_getent(char **, unsigned int *, int *, int, char **, int, const char *, int, char *); static int _nc_nfcmp(const char *, char *); -static int _nc_tgetent(char *, char **, int *, const char *); - -/* - * termcap - routines for dealing with the terminal capability data base - * - * BUG: Should use a "last" pointer in tbuf, so that searching - * for capabilities alphabetically would not be a n**2/2 - * process when large numbers of capabilities are given. - * Note: If we add a last pointer now we will screw up the - * tc capability. We really should compile termcap. - * - * Essentially all the work here is scanning and decoding escapes in string - * capabilities. We don't use stdio because the editor doesn't, and because - * living w/o it is not hard. - */ - -static char *tbuf; /* termcap buffer */ - -/* - * 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 (!cp || *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, 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 (cp && *cp && *cp != '/') { - if (_nc_cgetset(cp) < 0) - return(TC_SYS_ERR); - } - - i = _nc_cgetent(&dummy, lineno, pathvec, name); - - if (i >= 0) - strcpy(bp, dummy); - - FreeIfNeeded(dummy); - FreeIfNeeded(the_source); - the_source = 0; - - if (i >= 0) { - the_source = malloc(strlen(pathvec[i]) + 1); - if (the_source != 0) - *sourcename = strcpy(the_source, pathvec[i]); - } - - return(i); -} /*- * Copyright (c) 1992, 1993 @@ -672,8 +551,8 @@ _nc_getent( * Insert tc'ed record into our record. */ s = tcstart + newilen; - memmove(s, tcend, rp - tcend); - memmove(tcstart, newicap, newilen); + memmove(s, tcend, (size_t)(rp - tcend)); + memmove(tcstart, newicap, (size_t)newilen); rp += diff; free(icap); @@ -767,14 +646,274 @@ _nc_nfcmp(const char *nf, char *rec) 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]; -#ifndef USE_GETCAP +#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: * @@ -811,7 +950,7 @@ int _nc_read_termcap_entry(const char *const tn, TERMTYPE *const tp) if ((tc = getenv("TERMCAP")) != 0) { - if (tc[0] == '/') /* interpret as a filename */ + if (is_pathname(tc)) /* interpret as a filename */ { termpaths[0] = tc; termpaths[filecount = 1] = 0; @@ -899,19 +1038,7 @@ int _nc_read_termcap_entry(const char *const tn, TERMTYPE *const tp) } } } -#else - char tc[2048 * 2]; - 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); -#endif +#endif /* USE_GETCAP */ if (_nc_head == 0) return(ERR); @@ -920,9 +1047,11 @@ int _nc_read_termcap_entry(const char *const tn, TERMTYPE *const tp) _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, "|:")) { @@ -958,8 +1087,10 @@ int _nc_read_termcap_entry(const char *const tn, TERMTYPE *const tp) break; } } +#if USE_GETCAP_CACHE chdir(cwd_buf); } +#endif _nc_free_entries(_nc_head); return(found);