/*  UNBCODE: bcode decoder version 1.03-kr by Craig Bruce 07-Oct-93, 09-Nov-93.
**
**  Added code for remove and rename.  To activate, add -DNO_REMOVE and/or 
**  -DNO_RENAME as needed.  15-Oct-93 (bjs)
**
**  CRC-32 code based on "File Verification Using CRC" by Mark R. Nelson in
**  Dr. Dobb's Journal, May 1992, pp. 64-67.  Note that CRC-32 values ARE the
**  same as in ZMODEM and PKZIP.
*/

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#define VERSION		"1.03-kr"
#define MAX_CHUNK	64
#define MAX_LINE	85
#define MAX_FILENAME	85
#define MAX_HAVE	1000
#define MAX_TEMPNAME	20
#define COPY_BUF_SIZE	4096

#ifdef NO_REMOVE
#define remove(x) unlink(x)
#endif

typedef unsigned char BYTE;
typedef char SBYTE;
typedef unsigned long ULONG;
typedef int BOOL;
#define TRUE	1
#define FALSE	0

typedef struct {
	ULONG	fromSeg;
	ULONG	toSeg;
	BOOL	isEnd;
	ULONG	tempFileName;
	char   *filename;
} HAVEREC;

void	main();
void	DecodeFile();
ULONG	FindHeader();
void	LoadStatusFile();
void	SaveStatusFile();
void	WriteStatusData();
int	ReadLine();
void	BuildDecodeTable();
BOOL	DecodeSeg();
int	DecodeLine();
FILE   *GetTempFile();
ULONG	InsertHaveRec();
void	CheckCoalesce();
void	CheckComplete();
void	RemoveHaveRec();
void	GetTempNameStr();

char   *progname;
BOOL	informative;
BOOL	verbose;
BOOL	debug;
char   *readFilename;
ULONG	readLineNum;

HAVEREC	haves[MAX_HAVE];
int	haveCount;
BOOL	statusFileExists;
ULONG	nextTempName;
char	tempPrefix[MAX_FILENAME];
BYTE	copyBuf[COPY_BUF_SIZE];
SBYTE	decodeTable[ 256 ];
ULONG	crcTable[256] = {
    0x00000000, 0x77073096, 0xEE0E612C, 0x990951BA, 0x076DC419, 0x706AF48F, 
    0xE963A535, 0x9E6495A3, 0x0EDB8832, 0x79DCB8A4, 0xE0D5E91E, 0x97D2D988, 
    0x09B64C2B, 0x7EB17CBD, 0xE7B82D07, 0x90BF1D91, 0x1DB71064, 0x6AB020F2, 
    0xF3B97148, 0x84BE41DE, 0x1ADAD47D, 0x6DDDE4EB, 0xF4D4B551, 0x83D385C7, 
    0x136C9856, 0x646BA8C0, 0xFD62F97A, 0x8A65C9EC, 0x14015C4F, 0x63066CD9, 
    0xFA0F3D63, 0x8D080DF5, 0x3B6E20C8, 0x4C69105E, 0xD56041E4, 0xA2677172, 
    0x3C03E4D1, 0x4B04D447, 0xD20D85FD, 0xA50AB56B, 0x35B5A8FA, 0x42B2986C, 
    0xDBBBC9D6, 0xACBCF940, 0x32D86CE3, 0x45DF5C75, 0xDCD60DCF, 0xABD13D59, 
    0x26D930AC, 0x51DE003A, 0xC8D75180, 0xBFD06116, 0x21B4F4B5, 0x56B3C423, 
    0xCFBA9599, 0xB8BDA50F, 0x2802B89E, 0x5F058808, 0xC60CD9B2, 0xB10BE924, 
    0x2F6F7C87, 0x58684C11, 0xC1611DAB, 0xB6662D3D, 0x76DC4190, 0x01DB7106, 
    0x98D220BC, 0xEFD5102A, 0x71B18589, 0x06B6B51F, 0x9FBFE4A5, 0xE8B8D433, 
    0x7807C9A2, 0x0F00F934, 0x9609A88E, 0xE10E9818, 0x7F6A0DBB, 0x086D3D2D, 
    0x91646C97, 0xE6635C01, 0x6B6B51F4, 0x1C6C6162, 0x856530D8, 0xF262004E, 
    0x6C0695ED, 0x1B01A57B, 0x8208F4C1, 0xF50FC457, 0x65B0D9C6, 0x12B7E950, 
    0x8BBEB8EA, 0xFCB9887C, 0x62DD1DDF, 0x15DA2D49, 0x8CD37CF3, 0xFBD44C65, 
    0x4DB26158, 0x3AB551CE, 0xA3BC0074, 0xD4BB30E2, 0x4ADFA541, 0x3DD895D7, 
    0xA4D1C46D, 0xD3D6F4FB, 0x4369E96A, 0x346ED9FC, 0xAD678846, 0xDA60B8D0, 
    0x44042D73, 0x33031DE5, 0xAA0A4C5F, 0xDD0D7CC9, 0x5005713C, 0x270241AA, 
    0xBE0B1010, 0xC90C2086, 0x5768B525, 0x206F85B3, 0xB966D409, 0xCE61E49F, 
    0x5EDEF90E, 0x29D9C998, 0xB0D09822, 0xC7D7A8B4, 0x59B33D17, 0x2EB40D81, 
    0xB7BD5C3B, 0xC0BA6CAD, 0xEDB88320, 0x9ABFB3B6, 0x03B6E20C, 0x74B1D29A, 
    0xEAD54739, 0x9DD277AF, 0x04DB2615, 0x73DC1683, 0xE3630B12, 0x94643B84, 
    0x0D6D6A3E, 0x7A6A5AA8, 0xE40ECF0B, 0x9309FF9D, 0x0A00AE27, 0x7D079EB1, 
    0xF00F9344, 0x8708A3D2, 0x1E01F268, 0x6906C2FE, 0xF762575D, 0x806567CB, 
    0x196C3671, 0x6E6B06E7, 0xFED41B76, 0x89D32BE0, 0x10DA7A5A, 0x67DD4ACC, 
    0xF9B9DF6F, 0x8EBEEFF9, 0x17B7BE43, 0x60B08ED5, 0xD6D6A3E8, 0xA1D1937E, 
    0x38D8C2C4, 0x4FDFF252, 0xD1BB67F1, 0xA6BC5767, 0x3FB506DD, 0x48B2364B, 
    0xD80D2BDA, 0xAF0A1B4C, 0x36034AF6, 0x41047A60, 0xDF60EFC3, 0xA867DF55, 
    0x316E8EEF, 0x4669BE79, 0xCB61B38C, 0xBC66831A, 0x256FD2A0, 0x5268E236, 
    0xCC0C7795, 0xBB0B4703, 0x220216B9, 0x5505262F, 0xC5BA3BBE, 0xB2BD0B28, 
    0x2BB45A92, 0x5CB36A04, 0xC2D7FFA7, 0xB5D0CF31, 0x2CD99E8B, 0x5BDEAE1D, 
    0x9B64C2B0, 0xEC63F226, 0x756AA39C, 0x026D930A, 0x9C0906A9, 0xEB0E363F, 
    0x72076785, 0x05005713, 0x95BF4A82, 0xE2B87A14, 0x7BB12BAE, 0x0CB61B38, 
    0x92D28E9B, 0xE5D5BE0D, 0x7CDCEFB7, 0x0BDBDF21, 0x86D3D2D4, 0xF1D4E242, 
    0x68DDB3F8, 0x1FDA836E, 0x81BE16CD, 0xF6B9265B, 0x6FB077E1, 0x18B74777, 
    0x88085AE6, 0xFF0F6A70, 0x66063BCA, 0x11010B5C, 0x8F659EFF, 0xF862AE69, 
    0x616BFFD3, 0x166CCF45, 0xA00AE278, 0xD70DD2EE, 0x4E048354, 0x3903B3C2, 
    0xA7672661, 0xD06016F7, 0x4969474D, 0x3E6E77DB, 0xAED16A4A, 0xD9D65ADC, 
    0x40DF0B66, 0x37D83BF0, 0xA9BCAE53, 0xDEBB9EC5, 0x47B2CF7F, 0x30B5FFE9, 
    0xBDBDF21C, 0xCABAC28A, 0x53B39330, 0x24B4A3A6, 0xBAD03605, 0xCDD70693, 
    0x54DE5729, 0x23D967BF, 0xB3667A2E, 0xC4614AB8, 0x5D681B02, 0x2A6F2B94, 
    0xB40BBE37, 0xC30C8EA1, 0x5A05DF1B, 0x2D02EF8D
};

/****************************************************************************/
void main( argc, argv )
	int	argc;
	char   *argv[];
{
	FILE   *fin;
	int	i;
	BOOL	filenameUsed;

	progname     = argv[0];
	filenameUsed = FALSE;
	informative  = FALSE;
	verbose      = FALSE;
	debug        = FALSE;
	strcpy( tempPrefix, "" );
	BuildDecodeTable();
	LoadStatusFile();

	i = 1;
	while (i<argc) {
		if (argv[i][0] == '-') {
			switch (argv[i][1]) {
			case 'i':
				informative = TRUE;
				break;
			case 'd':
				verbose = TRUE;
				informative = TRUE;
				debug = TRUE;
				fprintf(stderr, "unbcode version %s\n",
					VERSION );
				fprintf(stderr, "debugging mode activated\n");
				fprintf(stderr,
					"---Current-File-Segments---\n");
				WriteStatusData( stderr );
				fprintf(stderr,
					"--End-of-Current-Segments--\n");
				break;
			case 'v':
				verbose = TRUE;
				informative = TRUE;
				fprintf(stderr, "unbcode version %s\n",
					VERSION);
				break;
			default:
				fprintf(stderr, "%s: unrecognized option\n",
					progname);
				fprintf(stderr,
				"usage: %s [-v] [-i] [-d] [filename] ...\n",
				progname);
				exit( 1 );
				break;
			}
		} else {
			filenameUsed = TRUE;
			if (verbose) {
				fprintf(stderr, "%s: decoding file \"%s\"\n",
					progname, argv[i]);
			}
			if( (fin = fopen(argv[i], "r")) == NULL) {
				fprintf(stderr, "%s: error opening \"%s\"\n",
					progname, argv[i]);
			} else {
				readFilename = argv[i];
				readLineNum = 0;
				DecodeFile( fin );
				fclose( fin );
			}
		}
		i++;
	}
	if (!filenameUsed) {
		if (verbose) {
			fprintf(stderr, "%s: decoding from standard input\n",
				progname);
		}
		readFilename = "<stdin>";
		readLineNum = 0;
		DecodeFile( stdin );
	}
	SaveStatusFile();
}

/****************************************************************************/
void DecodeFile( fin )
	FILE *fin;
{
	char	filename[MAX_FILENAME];
	ULONG	segnum;
	FILE   *fout;
	BOOL	err, isEnd;
	ULONG	haveRec;

	while (TRUE) {
		segnum = FindHeader( fin, filename );
		if (segnum == 0) return;
		if (verbose) {
			fprintf(stderr, "decoding segment %lu of file %s\n",
				segnum, filename);
		}
		fout = GetTempFile( filename, segnum, &haveRec );
		if (fout == NULL) continue;
		err = DecodeSeg( fin, fout, segnum, &isEnd );
		if (err) {
			/* should do something to invalidate data here */
			fprintf(stderr,
"error decoding segment #%lu of file \"%s\", ignoring.\n", segnum, filename);
		} else {
			haves[haveRec].isEnd = isEnd;
		}
		fclose( fout );
		CheckCoalesce( haveRec );
		CheckComplete( haveRec );
		if (debug) {
			fprintf(stderr, "---File-Segments---\n");
			WriteStatusData( stderr );
			fprintf(stderr, "--End-of-Segments--\n");
		}
	}
}

/****************************************************************************/
ULONG FindHeader( fin, filename )
	FILE *fin;
	char *filename;
{
	char	line[MAX_LINE];
	int	len, scan;
	ULONG	segnum;

	segnum = 0;
	while( segnum == 0 ) {
		len = ReadLine( fin, line );
		if (len == -1) return( 0 );
		if (line[0]=='-' && line[1]=='-' && line[2]=='b') {
			scan = sscanf(line,"--bcode-begin %lu %s", &segnum,
				filename);
			if (scan != 2 || segnum < 1) segnum = 0;
		}
	}
	return( segnum );
}

/****************************************************************************/
int ReadLine( fin, buf )
	FILE *fin;
	char *buf;
{
	char   *r;
	char	junkline[MAX_LINE];
	int	len;

	r = fgets( buf, MAX_LINE, fin );
	if (r==NULL) return( -1 );
	len = strlen(buf)-1;
	if (buf[len] == '\n') {
		buf[len] = '\0';
	} else {
		len++;
		do {
			r = fgets( junkline, MAX_LINE, fin );
		} while (r!=NULL && junkline[strlen(junkline)-1]!='\n');
	}
	readLineNum++;
	return( len );
}

/****************************************************************************/
void BuildDecodeTable()
{
	int	i, v;

	for (i=0; i<=255; i++) decodeTable[i] = -1;

	v = 0;
	for (i='A'; i<='Z'; i++) decodeTable[i] = v++;
	for (i='a'; i<='z'; i++) decodeTable[i] = v++;
	for (i='0'; i<='9'; i++) decodeTable[i] = v++;
	decodeTable['+'] = v++;
	decodeTable['/'] = v++;
	decodeTable['='] = 0;
}

/****************************************************************************/
BOOL DecodeSeg( fin, fout, segnum, isEnd )
	FILE *fin;
	FILE *fout;
	ULONG segnum;
	BOOL *isEnd;
{
	ULONG	seglen, segcrc;
	ULONG	statNum, statLen, statCrc;
	int	len, scan, off;
	BYTE	buf[MAX_CHUNK+3];
	BYTE	line[MAX_LINE];

	seglen = 0;
	segcrc = 0xFFFFFFFF;
	while( TRUE ) {
		len = ReadLine( fin, (char*)line );
		if (len == -1) {
			fprintf(stderr, "unexpected EOF encountered\n");
			return( TRUE );
		}
		if (line[0]=='-') break;
		len = DecodeLine( line, len, buf, &segcrc );
		if (len == -1) return( TRUE );
		fwrite( buf, sizeof(BYTE), len, fout );
		seglen += len;
	}
	segcrc ^= 0xFFFFFFFF;

	if( strncmp("--bcode-end ", line, 12)==0 ) {
		off = 12;
		*isEnd = TRUE;
	} else if( strncmp("--bcode-continued ", line, 18)==0 ) {
		off = 18;
		*isEnd = FALSE;
	} else {
		fprintf(stderr, "invalid control token\n");
		return( TRUE );
	}
	scan = sscanf(&line[off], "%lu %lu %08lx", &statNum, &statLen,
		&statCrc);
	if (scan != 3) {
		fprintf(stderr, "invalid control line format\n");
		return( TRUE );
	}
	if (statNum != segnum) {
		fprintf(stderr, "mismatching segment numbers\n");
		return( TRUE );
	}
	if (statLen != seglen) {
		fprintf(stderr, "mismatching segment lengths\n");
		return( TRUE );
	}
	if (statCrc != segcrc) {
		fprintf(stderr, "mismatching CRC values\n");
		return( TRUE );
	}
	return( FALSE );
}

/****************************************************************************/
int DecodeLine( line, lineLen, buf, totalCrc )
	BYTE line[];
	int lineLen;
	BYTE buf[];
	ULONG *totalCrc;
{
	register int	c0,c1,c2,c3;
	register ULONG	crc;
	register int	bufpos, linepos, len;

	crc = *totalCrc;
	if (lineLen%4 != 0) {
		fprintf(stderr, "invalid bcode line length\n");
		return( -1 );
	}
	if (lineLen == 0) return( 0 );
	for (bufpos = 0,linepos = 0; linepos < lineLen; bufpos+=3,linepos+=4) {
		c0 = decodeTable[ line[linepos  ] ];
		c1 = decodeTable[ line[linepos+1] ];
		c2 = decodeTable[ line[linepos+2] ];
		c3 = decodeTable[ line[linepos+3] ];
		if (c0==-1 || c1==-1 || c2==-1 || c3==-1) {
			fprintf(stderr, "invalid character in bcode data\n");
			return( -1 );
		}
		buf[bufpos  ] = (c0<<2) | ((c1&0x30)>>4);
		buf[bufpos+1] = ((c1&0x0F)<<4) | ((c2&0x3C)>>2);
		buf[bufpos+2] = ((c2&0x03)<<6) | c3;
	}

	/* fix non-integral-length (last) line */
	if (line[lineLen-1] == '=') bufpos--;
	if (line[lineLen-2] == '=') bufpos--;
	len = bufpos;

	/* take crc of binary data */
	for( bufpos=0; bufpos < len; bufpos++ ) {
		crc = ((crc>>8) & 0x00FFFFFF)
			^ crcTable[ (crc^buf[bufpos]) & 0xFF];
	}
	*totalCrc = crc;
	return( len );
}

/****************************************************************************/
void LoadStatusFile()
{
	char	line[MAX_LINE];
	char	filename[MAX_FILENAME];
	FILE   *fin;
	int	scan;
	HAVEREC*h;
	char	interpret[4];

	haveCount = 0;
	statusFileExists = FALSE;
	nextTempName = 1;
	sprintf(filename, "%s0BC-STAT", tempPrefix);
	if( (fin = fopen(filename, "r")) == NULL) return;
	statusFileExists = TRUE;
	while ( ReadLine( fin, line ) != -1 ) {
		h = & haves[haveCount];
		scan = sscanf(line, "%05lu-%05lu  %c%c%c  0BC%05lx  %s",
			&h->fromSeg, &h->toSeg, &interpret[0], &interpret[1],
			&interpret[2], &h->tempFileName, filename);
		if (scan != 7) {
			fprintf(stderr, "Bad Status Line: %s\n", line);
		} else {
			h->isEnd = (interpret[0] == 'e');
			h->filename = (char*)malloc( strlen(filename)+1 );
			strcpy( h->filename, filename );
			haveCount++;
			if (haveCount>=MAX_HAVE) {
				fprintf(stderr,
					"too many status fragments, FATAL\n");
				exit( 1 );
			}
		}
	}
	fclose( fin );
}

/****************************************************************************/
void SaveStatusFile()
{
	char	filename[MAX_FILENAME];
	FILE   *fout;
	int	err;

	sprintf(filename, "%s0BC-STAT", tempPrefix);
	if (haveCount == 0) {
		if (statusFileExists) {
			err = remove( filename );
			if (err) {
				fprintf(stderr,"cannot remove %s\n", filename);
			}
		}
		return;
	}
	if( (fout = fopen(filename, "w")) == NULL) {
		fprintf(stderr, "cannot open %s for saving status\n",filename);
		return;
	}
	WriteStatusData( fout );
	fclose( fout );
}

/****************************************************************************/
void WriteStatusData( fout )
	FILE *fout;
{
	ULONG	i;
	HAVEREC *h;
	char    interpret[4];

	for (i=0; i<haveCount; i++) {
		h = & haves[i];
		if (h->isEnd) {
			strcpy( interpret, "end" );
		} else {
			if (h->fromSeg == 1) {
				strcpy( interpret, "beg" );
			} else {
				strcpy( interpret, "mid" );
			}
		}
		fprintf(fout, "%05lu-%05lu  %s  0BC%05lu  %s\n", h->fromSeg,
			h->toSeg, interpret, h->tempFileName, h->filename);
	}
}

/****************************************************************************/
FILE *GetTempFile( filename, segnum, haveRec )
	char *filename;
	ULONG segnum;
	ULONG *haveRec;
{
	HAVEREC *h;
	ULONG	i, j, rec, tempName;
	char	tempname[MAX_FILENAME];
	char	tempmode[4];
	BOOL	append;
	FILE   *fout;

	/* search to append to existing file */
	append = FALSE;
	for (i=0; i<haveCount; i++) {
		h = & haves[i];
		if (strcmp(filename, h->filename)==0) {
			if (h->fromSeg<=segnum && segnum<=h->toSeg) {
				fprintf(stderr,
				"ignoring duplicate segment %lu of \"%s\"\n",
				segnum, filename);
				return( NULL );
			}
			if (segnum == h->toSeg + 1) {
				/* append */
				tempName = h->tempFileName;
				strcpy( tempmode, "ab" );
				append = TRUE;
				h->toSeg = segnum;
				h->isEnd = FALSE;
				rec = i;
				break;
			}
		}
	}

	if (!append) {
		/* find new tempname */
		for (i=0; i<100000; i++) {
			tempName = nextTempName;
			nextTempName = (nextTempName + 1) % 100000;
			for (j=0; j<haveCount; j++) {
				if (haves[j].tempFileName == tempName) {
					j = -1;
					break;
				}
			}
			if (j != -1) break;
			if (i==100000-1) {
				fprintf(stderr, "cannot find temp name!!!\n");
				return( NULL );
			}
		}

		/* create new have record */
		rec = InsertHaveRec( segnum, tempName, filename );
		strcpy(tempmode, "wb");
	}

	/* open the temporary file */
	GetTempNameStr( tempName, tempname );
	if( (fout = fopen(tempname, tempmode)) == NULL) {
		fprintf(stderr, "%s: error opening \"%s\" for write, FATAL!\n",
				progname, filename);
		exit( 1 );
	}
	*haveRec = rec;
	return( fout );
}

/****************************************************************************/
ULONG InsertHaveRec( segnum, tempName, filename )
	ULONG segnum;
	ULONG tempName;
	char *filename;
{
	ULONG	rec;
	long	i;
	HAVEREC*h;
	int	cmp;

	rec = haveCount;
	haveCount++;
	if (haveCount >= MAX_HAVE) {
		haveCount--;
		fprintf(stderr, "input data too fragmented; FATAL!\n");
		exit( 1 );
	}

	/* insertion sort new entry into place */
	for (i=rec-1; i>=0; i--) {
		cmp = strcmp(filename, haves[i].filename);
		if (cmp > 0) {
			break;
		} else if (cmp==0 && segnum>haves[i].fromSeg) {
			break;
		}
		haves[i+1] = haves[i];
	}

	/* initialize new record */
	rec = i+1;
	h = & haves[rec];
	h->fromSeg = segnum;
	h->toSeg = segnum;
	h->isEnd = FALSE;
	h->tempFileName = tempName;
	h->filename = (char*)malloc( strlen(filename)+1 );
	strcpy( h->filename, filename );
	return( rec );
}

/****************************************************************************/
void CheckCoalesce( haveRec )
	ULONG haveRec;
{
	HAVEREC *p, *q;
	char	tempname[MAX_FILENAME];
	int	err;
	FILE   *fin, *fout;
	ULONG	bytes;

	if (haveRec >= haveCount-1) return;
	p = & haves[haveRec];
	q = & haves[haveRec+1];
	if (strcmp(p->filename, q->filename)!=0 || p->toSeg+1 != q->fromSeg) {
		return;
	}

	/* coalesce */
	if (debug) {
		fprintf(stderr,
		"Coalescing segs %lu-%lu and segs %lu-%lu of file %s\n",
		p->fromSeg, p->toSeg, q->fromSeg, q->toSeg, p->filename);
	}

	/* copy file contents */
	GetTempNameStr( q->tempFileName, tempname );
	if( (fin = fopen(tempname, "rb")) == NULL) {
		fprintf(stderr, "%s: error opening \"%s\", FATAL\n",
			progname, tempname);
		exit( 1 );
	}
	GetTempNameStr( p->tempFileName, tempname );
	if( (fout = fopen(tempname, "ab")) == NULL) {
		fprintf(stderr, "%s: error opening \"%s\", FATAL\n",
			progname, tempname);
		exit( 1 );
	}
	while ( (bytes=fread( copyBuf, sizeof(BYTE), COPY_BUF_SIZE, fin)) >0) {
		fwrite( copyBuf, sizeof(BYTE), bytes, fout );
	}
	fclose( fout );
	fclose( fin );
	

	/* remove old record and temp file */
	p->toSeg = q->toSeg;
	p->isEnd = q->isEnd;
	GetTempNameStr( q->tempFileName, tempname );
	err = remove( tempname );
	if (err) {
		fprintf(stderr, "cannot remove %s, continuing.\n", tempname);
	}
	RemoveHaveRec( haveRec+1 );
}

/****************************************************************************/
void CheckComplete( haveRec )
	ULONG haveRec;
{
	char	tempname[MAX_FILENAME];
	int	err;
	HAVEREC*h;

	h = & haves[haveRec];
	if (!h->isEnd || h->fromSeg!=1) return;
	
	GetTempNameStr( h->tempFileName, tempname );
	err = rename( tempname, h->filename );
	if (err) {
		fprintf(stderr, "cannot rename %s to %s, continuing.",
			tempname, h->filename );
	}
	if (informative) {
		fprintf(stderr,
			"I have pieced together all segments of \"%s\"\n",
			h->filename );
	}
	RemoveHaveRec( haveRec );
}

/****************************************************************************/
void RemoveHaveRec( rec )
	ULONG rec;
{
	long	i;

	/* free dynamic memory of filename */
	free( haves[rec].filename );

	/* pull all higher entries back one position */
	for (i=rec; i<haveCount-1; i++) {
		haves[i] = haves[i+1];
	}

	haveCount--;
}

/****************************************************************************/
void GetTempNameStr( tempName, s )
	ULONG tempName;
	char *s;
{
	sprintf(s, "%s0BC%05lu", tempPrefix, tempName);
}

#ifdef NO_RENAME
/****************************************************************************/
int rename( oldname, newname )
	char *oldname, *newname;
{
	if ( link( oldname, newname ))
		return( -1 );
	else
		return( unlink( oldname ));
}
#endif