static void file_comparison(int argc, char *argv[])
{
#define MAXCOMPARE 2
/* someday we may allow comparisons on more files */
int filecount = 0;
ENTRY *heads[MAXCOMPARE];
ENTRY *tails[MAXCOMPARE];
ENTRY *qp, *rp;
int i, n;
dump_init((char *)NULL, F_LITERAL, S_TERMINFO, 0, itrace, FALSE);
for (n = 0; n < argc && n < MAXCOMPARE; n++)
{
if (freopen(argv[n], "r", stdin) == NULL)
_nc_err_abort("Can't open %s", argv[n]);
_nc_head = _nc_tail = (ENTRY *)NULL;
/* parse entries out of the source file */
_nc_set_source(argv[n]);
_nc_read_entry_source(stdin, NULL, TRUE, FALSE, NULLHOOK);
if (itrace)
(void) fprintf(stderr, "Resolving file %d...\n", n-0);
/* do use resolution */
if (!_nc_resolve_uses())
{
(void) fprintf(stderr,
"There are unresolved use entries in %s:\n",
argv[n]);
for_entry_list(qp)
if (qp->nuses)
{
(void) fputs(qp->tterm.term_names, stderr);
(void) fputc('\n', stderr);
}
exit(EXIT_FAILURE);
}
heads[filecount] = _nc_head;
tails[filecount] = _nc_tail;
filecount++;
}
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;
char *tc, *termpaths[MAXPATHS];
int filecount = 0;
bool use_buffer = FALSE;
char tc_buf[1024];
char pathbuf[PATH_MAX];
termpaths[filecount] = 0;
if ((tc = getenv("TERMCAP")) != 0)
{
if (is_pathname(tc)) /* interpret as a filename */
{
ADD_TC(tc, 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')
{
ADD_TC(cp, filecount);
}
}
}
}
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 (_nc_access("/etc/termcap", F_OK) == 0)
ADD_TC("/etc/termcap", filecount);
else
ADD_TC("/usr/share/misc/termcap", filecount);
if ((h = getenv("HOME")) != NULL && strlen(h) + 9 < PATH_MAX)
{
/* user's .termcap, if any, should override it */
(void) strcpy(envhome, h);
(void) sprintf(pathbuf, "%s/.termcap", envhome);
ADD_TC(pathbuf, filecount);
}
}
/* 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);
}
