+++ /dev/null
-/*
- * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
- *
- * @APPLE_LICENSE_HEADER_START@
- *
- * The contents of this file constitute Original Code as defined in and
- * are subject to the Apple Public Source License Version 1.1 (the
- * "License"). You may not use this file except in compliance with the
- * License. Please obtain a copy of the License at
- * http://www.apple.com/publicsource and read it before using this file.
- *
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
- * License for the specific language governing rights and limitations
- * under the License.
- *
- * @APPLE_LICENSE_HEADER_END@
- */
-/*
- * Copyright (c) 1989, 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.
- */
-
-
-#include <ttyent.h>
-#include <stdio.h>
-#include <ctype.h>
-#include <string.h>
-
-static char zapchar;
-static FILE *tf;
-
-struct ttyent *
-getttynam(tty)
- const char *tty;
-{
- register struct ttyent *t;
-
- setttyent();
- while (t = getttyent())
- if (!strcmp(tty, t->ty_name))
- break;
- endttyent();
- return (t);
-}
-
-struct ttyent *
-getttyent()
-{
- static struct ttyent tty;
- register int c;
- register char *p;
-#define MAXLINELENGTH 1024
- static char line[MAXLINELENGTH];
- static char *skip(), *value();
-
- if (!tf && !setttyent())
- return (NULL);
- for (;;) {
- if (!fgets(p = line, sizeof(line), tf))
- return (NULL);
- /* skip lines that are too big */
- if (!index(p, '\n')) {
- while ((c = getc(tf)) != '\n' && c != EOF)
- ;
- continue;
- }
- while (isspace(*p))
- ++p;
- if (*p && *p != '#')
- break;
- }
-
- zapchar = 0;
- tty.ty_name = p;
- p = skip(p);
- if (!*(tty.ty_getty = p))
- tty.ty_getty = tty.ty_type = NULL;
- else {
- p = skip(p);
- if (!*(tty.ty_type = p))
- tty.ty_type = NULL;
- else
- p = skip(p);
- }
- tty.ty_status = 0;
- tty.ty_window = NULL;
- tty.ty_onerror = NULL;
- tty.ty_onoption = NULL;
-
-#define scmp(e) !strncmp(p, e, sizeof(e) - 1) && isspace(p[sizeof(e) - 1])
-#define vcmp(e) !strncmp(p, e, sizeof(e) - 1) && p[sizeof(e) - 1] == '='
- for (; *p; p = skip(p)) {
- if (scmp(_TTYS_OFF))
- tty.ty_status &= ~TTY_ON;
- else if (scmp(_TTYS_ON))
- tty.ty_status |= TTY_ON;
- else if (scmp(_TTYS_SECURE))
- tty.ty_status |= TTY_SECURE;
- else if (vcmp(_TTYS_WINDOW))
- tty.ty_window = value(p);
- else if (vcmp(_TTYS_ONERROR))
- tty.ty_onerror = value(p);
- else if (vcmp(_TTYS_ONOPTION))
- tty.ty_onoption = value(p);
- else
- break;
- }
-
- if (zapchar == '#' || *p == '#')
- while ((c = *++p) == ' ' || c == '\t')
- ;
- tty.ty_comment = p;
- if (*p == 0)
- tty.ty_comment = 0;
- if (p = index(p, '\n'))
- *p = '\0';
- return (&tty);
-}
-
-#define QUOTED 1
-
-/*
- * Skip over the current field, removing quotes, and return a pointer to
- * the next field.
- */
-static char *
-skip(p)
- register char *p;
-{
- register char *t;
- register int c, q;
-
- for (q = 0, t = p; (c = *p) != '\0'; p++) {
- if (c == '"') {
- q ^= QUOTED; /* obscure, but nice */
- continue;
- }
- if (q == QUOTED && *p == '\\' && *(p+1) == '"')
- p++;
- *t++ = *p;
- if (q == QUOTED)
- continue;
- if (c == '#') {
- zapchar = c;
- *p = 0;
- break;
- }
- if (c == '\t' || c == ' ' || c == '\n') {
- zapchar = c;
- *p++ = 0;
- while ((c = *p) == '\t' || c == ' ' || c == '\n')
- p++;
- break;
- }
- }
- *--t = '\0';
- return (p);
-}
-
-static char *
-value(p)
- register char *p;
-{
-
- return ((p = index(p, '=')) ? ++p : NULL);
-}
-
-int
-setttyent()
-{
-
- if (tf) {
- (void)rewind(tf);
- return (1);
- } else if (tf = fopen(_PATH_TTYS, "r"))
- return (1);
- return (0);
-}
-
-int
-endttyent()
-{
- int rval;
-
- if (tf) {
- rval = !(fclose(tf) == EOF);
- tf = NULL;
- return (rval);
- }
- return (1);
-}
projects / apple / libc.git / blobdiff