48 lines
1.2 KiB
C
Executable File
48 lines
1.2 KiB
C
Executable File
/* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
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/* All Rights Reserved */
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/* THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE OF AT&T */
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/* The copyright notice above does not evidence any */
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/* actual or intended publication of such source code. */
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#ident "@(#)TLgetfield.c 1.5 92/07/14 SMI" /* SVr4.0 1.3 */
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#include <table.h>
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#include <internal.h>
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extern tbl_t TLtables[];
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unsigned char *
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TLgetfield( tid, entry, fieldname )
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int tid;
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entry_t *entry;
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unsigned char *fieldname;
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{
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register tbl_t *tptr;
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register offset;
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/* Initialize TLlib, if needed */
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TLinit();
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tid--;
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if( !TLt_valid( tid ) ) return( NULL );
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if( !entry || !fieldname ) return( NULL );
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tptr = TLtables + tid;
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if( !Strcmp( fieldname, TLCOMMENT ) ) {
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if ( E_NFIELDS(entry) )
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return(NULL);
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else if ( E_COMMENT(entry) == NULL )
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return ((unsigned char *)(""));
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else return( E_COMMENT(entry) );
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}
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if( !Strcmp( fieldname, TLTRAILING ) )
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return( (E_NFIELDS(entry) == 0)? NULL: E_COMMENT(entry) );
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if( (offset = TLf_find( &(tptr->fieldnames), fieldname )) == -1 )
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return( NULL );
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if( offset > E_NFIELDS(entry) ) return( NULL );
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return( (unsigned char *)*E_GETFIELD( entry, offset ) );
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}
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