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/*
* ARC - Archive utility - Archive file header format
*
* Version 2.12, created on 12/17/85 at 14:40:26
*
* (C) COPYRIGHT 1985-87 by System Enhancement Associates.
* You may copy and distribute this program freely,
* under the terms of the General Public License.
*
* By: Thom Henderson
*
* Description: This file defines the format of an archive file header,
* excluding the archive marker and the header version number.
*
* Each entry in an archive begins with a one byte archive marker, which is set
* to 26. The marker is followed by a one byte header type code, from zero
* to 7.
*
* If the header type code is zero, then it is an end marker, and no more data
* should be read from the archive.
*
* If the header type code is in the range 2 to 7, then it is followed by a
* standard archive header, which is defined below.
*
* If the header type code is one, then it is followed by an older format
* archive header. The older format header does not contain the true length.
* A header should be read for a length of sizeof(struct heads)-sizeof(long).
* Then set length equal to size and change the header version to 2.
*
* Programming note: The crc value given in the header is based on the unpacked
* data.
*
* Language: Computer Innovations Optimizing C86
*/
struct heads { /* archive entry header format */
char name[FNLEN]; /* file name */
long size; /* size of file, in bytes */
unsigned short date; /* creation date */
unsigned short time; /* creation time */
short crc; /* cyclic redundancy check */
long length; /* true file length */
};
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