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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2006 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include "mt.h"
#include <stdio.h>
#include <stdlib.h>
#include <strings.h>
char *_strpbrk_escape(char *, char *);
/*
* _strtok_escape()
* Like strtok_r, except we don't break on a token if it is escaped
* with the escape character (\).
*/
char *
_strtok_escape(char *string, char *sepset, char **lasts)
{
char *r;
/* first or subsequent call */
if (string == NULL)
string = *lasts;
if (string == 0) /* return if no tokens remaining */
return (NULL);
if (*string == '\0') /* return if no tokens remaining */
return (NULL);
/* move past token */
if ((r = _strpbrk_escape(string, sepset)) == NULL)
*lasts = 0; /* indicate this is last token */
else {
*r = '\0';
*lasts = r+1;
}
return (string);
}
/*
* Return ptr to first occurrence of any non-escaped character from `brkset'
* in the character string `string'; NULL if none exists.
*/
char *
_strpbrk_escape(char *string, char *brkset)
{
const char *p;
do {
for (p = brkset; *p != '\0' && *p != *string; ++p)
;
if (p == string)
return ((char *)string);
if (*p != '\0') {
if (*(string-1) != '\\')
return ((char *)string);
}
} while (*string++);
return (NULL);
}
char *
_escape(char *s, char *esc)
{
int nescs = 0; /* number of escapes to place in s */
int i, j;
int len_s;
char *tmp;
if (s == NULL || esc == NULL)
return (NULL);
len_s = strlen(s);
for (i = 0; i < len_s; i++)
if (strchr(esc, s[i]))
nescs++;
if ((tmp = malloc(nescs + len_s + 1)) == NULL)
return (NULL);
for (i = 0, j = 0; i < len_s; i++) {
if (strchr(esc, s[i])) {
tmp[j++] = '\\';
}
tmp[j++] = s[i];
}
tmp[len_s + nescs] = '\0';
return (tmp);
}
char *
_unescape(char *s, char *esc)
{
int len_s;
int i, j;
char *tmp;
if (s == NULL || esc == NULL)
return (NULL);
len_s = strlen(s);
if ((tmp = malloc(len_s + 1)) == NULL)
return (NULL);
for (i = 0, j = 0; i < len_s; i++) {
if (s[i] == '\\' && strchr(esc, s[i + 1]))
tmp[j++] = s[++i];
else
tmp[j++] = s[i];
}
tmp[j] = NULL;
return (tmp);
}
char *
_strdup_null(char *s)
{
return (strdup(s ? s : ""));
}
/*
* read a line into buffer from a mmap'ed file.
* return length of line read.
*/
int
_readbufline(char *mapbuf, /* input mmap buffer */
int mapsize, /* input size */
char *buffer, /* output storage */
int buflen, /* output size */
int *lastlen) /* input read till here last time */
{
int linelen;
for (;;) {
linelen = 0;
while (linelen < buflen - 1) { /* "- 1" saves room for \n\0 */
if (*lastlen >= mapsize) {
if (linelen == 0 ||
buffer[linelen - 1] == '\\') {
return (-1);
} else {
buffer[linelen] = '\n';
buffer[linelen + 1] = '\0';
return (linelen);
}
}
switch (mapbuf[*lastlen]) {
case '\n':
(*lastlen)++;
if (linelen > 0 &&
buffer[linelen - 1] == '\\') {
--linelen; /* remove the '\\' */
} else {
buffer[linelen] = '\n';
buffer[linelen + 1] = '\0';
return (linelen);
}
break;
default:
buffer[linelen] = mapbuf[*lastlen];
(*lastlen)++;
linelen++;
}
}
/* Buffer overflow -- eat rest of line and loop again */
while (mapbuf[*lastlen] != '\n') {
if (mapbuf[*lastlen] == EOF) {
return (-1);
}
(*lastlen)++;
};
}
/* NOTREACHED */
}
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