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#ifndef lint
static char Rcs_Id[] __attribute__ ((unused)) =
"$Id: unsq.c,v 1.18 2005/04/14 14:38:23 geoff Exp $";
#endif
/*
* Copyright 1993, 1999, 2001, Geoff Kuenning, Claremont, CA
* 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 modifications to the source code must be clearly marked as
* such. Binary redistributions based on modified source code
* must be clearly marked as modified versions in the documentation
* and/or other materials provided with the distribution.
* 4. The code that causes the 'ispell -v' command to display a prominent
* link to the official ispell Web site may not be removed.
* 5. The name of Geoff Kuenning may not be used to endorse or promote
* products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY GEOFF KUENNING 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 GEOFF KUENNING 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.
*/
/*
* $Log: unsq.c,v $
* Revision 1.18 2005/04/14 14:38:23 geoff
* Update license.
*
* Revision 1.17 2001/07/25 21:51:47 geoff
* Minor license update.
*
* Revision 1.16 2001/07/23 20:24:04 geoff
* Update the copyright and the license.
*
* Revision 1.15 1999/01/07 01:58:02 geoff
* Update the copyright.
*
* Revision 1.14 1994/01/25 07:12:19 geoff
* Get rid of all old RCS log lines in preparation for the 3.1 release.
*
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "msgs.h"
#ifdef __STDC__
#define P(x) x
#else /* __STDC__ */
#define P(x) ()
#endif /* __STDC__ */
int main P ((int argc, char * argv[]));
static int sqexpand P ((char * word, char * prev));
/*
* The following table encodes prefix sizes as a single character. A
* matching table will be found in sq.c.
*/
static char size_encodings[] =
{
'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', /* 00-09 */
'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', /* 10-19 */
'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', /* 20-29 */
'U', 'V', 'W', 'X', 'Y', 'Z', 'a', 'b', 'c', 'd', /* 30-39 */
'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', /* 40-49 */
'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', /* 50-59 */
'y', 'z' /* 60-61 */
};
#define MAX_PREFIX ((sizeof(size_encodings)/sizeof(char)) - 1)
#define UNSEQBUFSIZE 257
int main (argc, argv)
int argc;
char * argv[];
{
char word[UNSEQBUFSIZE];
static char prev[UNSEQBUFSIZE] = "";
while (!sqexpand (word, prev))
puts (word);
return 0;
}
static int sqexpand (word, prev)
char * word;
char * prev;
{
register char * wordp;
register char * prevp;
register char * nl;
register int same_count;
register int count_char;
register off_t size;
count_char = getchar ();
if (count_char == EOF)
return(1);
for (same_count = 0;
same_count <= MAX_PREFIX && size_encodings[same_count] != count_char;
same_count++)
;
if (same_count > MAX_PREFIX)
{
(void) fprintf (stderr, UNSQ_C_BAD_COUNT, (unsigned int) count_char);
exit (1);
}
prevp = prev;
wordp = word;
while (same_count--)
*wordp++ = (*prevp++);
size = UNSEQBUFSIZE - (wordp - word);
if (fgets(wordp, size <= UNSEQBUFSIZE ? size : 0, stdin) == NULL)
{
(void) fprintf (stderr, UNSQ_C_SURPRISE_EOF);
exit (1);
}
word[UNSEQBUFSIZE - 1] = '\0'; /* In case of no newline */
if ((nl = strrchr(wordp, '\n')))
*nl = '\0';
(void) strcpy (prev, word);
return 0 ;
}
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