/*===========================================================================*//* SEED reader     |             parse_type31              |   abbrev dctnry *//*===========================================================================*//*	Name:		parse_type31	Purpose:	parse a comment description dictionary (type 31) blockette				into a globally-available table	Usage:		void parse_type31 ();				char *blockette;				parse_type31 (blockette);	Input:		blockette = pointer to beginning of blockette	Output:		none	Externals:	temp_char				type31_head - 1st entry in table; defined in structures.h,					allocated in globals.h	Warnings:	none	Errors:		none	Called by:	process_abbrevdic	Calls to:	parse_int - get an integer from a blockette 				parse_nchar - get a fixed-length string from a blockette 				parse_varlstr - get a variable-length string from a blockette	Algorithm:	parse the blockette	Notes:		none	Problems:	none known	References:	Halbert et al, 1988; see main routine	Language:	C, hopefully ANSI standard	Author:		Dennis O'Neill	Revisions:	07/15/88  Dennis O'Neill  Initial preliminary release 0.9				11/04/88  Dennis O'Neill  replaced "~" by STRINGTERM in				                          parse_varlstr calls				11/21/88  Dennis O'Neill  Production release 1.0				08/19/89  Dennis O'Neill  streamlined linked list construction*/#include "rdseed.h"/* this needs to be allocated here so it keeps its value between calls */struct type31 *type31_tail = NULL;					/* end of linked list */void parse_type31 (blockette)char *blockette;								/* ptr to start of blockette */{	char *blockette_ptr;						/* ptr to inside blockette */	struct type31 *type31; 							/* genl member of table */	/* point to beginning of information, past type and length */	blockette_ptr = blockette;	blockette_ptr += 7;/*                 +=======================================+                 *//*=================| allocate space and initialize a type31|=================*//*                 +=======================================+                 */	type31 = (struct type31 *) alloc_linklist_element (sizeof (struct type31),		"parse_type31");	/*                 +=======================================+                 *//*=================|  recover information from the type31  |=================*//*                 +=======================================+                 */	/* recover comment code id */	type31->code = parse_int (&blockette_ptr, 4);	/* recover comment class code */	type31->class = parse_nchar (&blockette_ptr, 1);	/* recover comment text */	type31->comment = parse_varlstr (&blockette_ptr, STRINGTERM);	/* recover units of comment */	type31->units = parse_int (&blockette_ptr, 3);/*                 +=======================================+                 *//*=================| link the type31 into the type31 table |=================*//*                 +=======================================+                 */	append_linklist_element (type31, type31_head, type31_tail);}