archie/prospero/lib/pfs/unquote.c

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2024-05-27 16:13:40 +02:00
/*
* Copyright (c) 1989, 1990 by the University of Washington
*
* For copying and distribution information, please see the file
* <uw-copyright.h>.
*/
#include <uw-copyright.h>
#include <stdio.h>
#include <string.h>
#include <pfs_threads.h>
/*
* unquote - unquote string if necessary
*
* UNQUOTE takes a string and unquotes it if it has been quoted.
*
* ARGS: s - string to be unquoted
*
* RETURNS: The original string. If the string has been quoted, then the
* result appears in static storage, and must be copied if
* it is to last beyond the next call to quote.
*
*/
/* This code exists only for the sake of server/dirsrv_v1.c,
server/shadowcvt.c, and lib/psrv/dsdir_v0.c. */
char *
unquote(s)
char *s; /* String to be quoted */
{
AUTOSTAT_CHARPP(unquotedp);
char *c = *unquotedp;
if(*s != '\'') return(s);
s++;
/* This should really treat a quote followed by other */
/* than a quote or a null as an error */
while(*s) {
if(*s == '\'') s++;
if(*s) *c++ = *s++;
}
*c++ = '\0';
return(*unquotedp);
}
/*
* unquoten - unquote string if necessary and return NULL for empty string
*
* UNQUOTEN takes a string and unquotes it if it has been quoted.
* If the string is the emtpy string, or the quoted empty string
* UNQUOTEN returns NULL.
*
* ARGS: s - string to be unquoted
*
* RETURNS: The original string. If the string has been quoted, then the
* result appears in static storage, and must be copied if
* it is to last beyond the next call to unquote() or unquoten().
*
*/
char *
unquoten(s)
char *s; /* String to be quoted */
{
char *u;
if(!s || !*s) return(NULL);
u = unquote(s);
if(!*u) return(NULL);
else return(u);
}