diff options
Diffstat (limited to 'lib/libncurses/termcap.c')
| -rw-r--r-- | lib/libncurses/termcap.c | 265 |
1 files changed, 265 insertions, 0 deletions
diff --git a/lib/libncurses/termcap.c b/lib/libncurses/termcap.c new file mode 100644 index 0000000..9469bea --- /dev/null +++ b/lib/libncurses/termcap.c @@ -0,0 +1,265 @@ +/* A portion of this file is from ncurses: */ +/*************************************************************************** +* 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. * +* * +***************************************************************************/ + +#include <curses.priv.h> + +#include <string.h> +#include <term.h> +#include <tic.h> +#include <term_entry.h> + +/* The rest is from BSD */ +/* + * 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 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. + * + * $FreeBSD$ + */ + +#ifndef lint +static const char sccsid[] = "@(#)termcap.c 8.1 (Berkeley) 6/4/93"; +#endif /* not lint */ + +#include <stdio.h> +#include <ctype.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> +#include <sys/param.h> +#include "pathnames.h" + +#define PBUFSIZ MAXPATHLEN /* max length of filename path */ +#define PVECSIZ 32 /* max number of names in path */ +#define TBUFSIZ 1024 /* max length of _nc_tgetent buffer */ + +char _nc_termcap[TBUFSIZ + 1]; /* Last getcap, provided to tgetent() emul */ + +/* + * 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. + */ + +/* + * Get an entry for terminal name in buffer _nc_termcap from the termcap + * file. + */ +int +_nc_read_termcap_entry(const char *const name, TERMTYPE *const tp) +{ + ENTRY *ep; + 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; + + _nc_termcap[0] = '\0'; /* in case */ + dummy = NULL; + fname = pathvec; + pvec = pathvec; + 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")) ) + strncpy(pathbuf, termpath, PBUFSIZ); + else { + if ( (home = getenv("HOME")) ) {/* set up default */ + strncpy(pathbuf, home, PBUFSIZ - 1); /* $HOME first */ + pathbuf[PBUFSIZ - 2] = '\0'; /* -2 because we add a slash */ + p += strlen(pathbuf); /* path, looking in */ + *p++ = '/'; + } /* if no $HOME look in current directory */ + strncpy(p, _PATH_DEF, PBUFSIZ - (p - pathbuf)); + } + } + else /* user-defined name in TERMCAP */ + strncpy(pathbuf, cp, PBUFSIZ); /* still can be tokenized */ + + /* For safety */ + if (issetugid()) + strcpy(pathbuf, _PATH_DEF_SEC); + + pathbuf[PBUFSIZ - 1] = '\0'; + + *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 = (char *) 0; /* mark end of vector */ + if (cp && *cp && *cp != '/') + if (cgetset(cp) < 0) + return(-2); + + i = cgetent(&dummy, pathvec, (char *)name); + + if (i == 0) { + char *pd, *ps, *tok, *s, *tcs; + size_t len; + + pd = _nc_termcap; + ps = dummy; + if ((tok = strchr(ps, ':')) == NULL) { + len = strlen(ps); + if (len >= TBUFSIZ) + i = -1; + else + strcpy(pd, ps); + goto done; + } + len = tok - ps + 1; + if (pd + len + 1 - _nc_termcap >= TBUFSIZ) { + i = -1; + goto done; + } + memcpy(pd, ps, len); + ps += len; + pd += len; + *pd = '\0'; + tcs = pd - 1; + for (;;) { + while ((tok = strsep(&ps, ":")) != NULL && + (*tok == '\0' || *tok == '\\' || !isgraph(*tok))) + ; + if (tok == NULL) + break; + for (s = tcs; s != NULL && s[1] != '\0'; + s = strchr(s, ':')) { + s++; + if (s[0] == tok[0] && s[1] == tok[1]) + goto skip_it; + } + len = strlen(tok); + if (pd + len + 1 - _nc_termcap >= TBUFSIZ) { + i = -1; + break; + } + memcpy(pd, tok, len); + pd += len; + *pd++ = ':'; + *pd = '\0'; + skip_it: ; + } + } +done: + if (dummy) + free(dummy); + + +/* + * From here on is ncurses-specific glue code + */ + + if (i < 0) + return(ERR); + + _nc_set_source("TERMCAP"); + _nc_read_entry_source((FILE *)NULL, _nc_termcap, FALSE, TRUE, NULLHOOK); + + if (_nc_head == (ENTRY *)NULL) + return(ERR); + + /* resolve all use references */ + _nc_resolve_uses(); + + for_entry_list(ep) + if (_nc_name_match(ep->tterm.term_names, name, "|:")) + { + /* + * 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 *)NULL; + _nc_free_entries(_nc_head); + _nc_head = _nc_tail = NULL; /* do not reuse! */ + + return 1; /* OK */ + } + + _nc_free_entries(_nc_head); + _nc_head = _nc_tail = NULL; /* do not reuse! */ + return(0); /* not found */ +} |
