From b37e0da0b7dc72ddfa513e319ca71b5f5b8aeb7d Mon Sep 17 00:00:00 2001
From: Tobias Klauser <tklauser@distanz.ch>
Date: Mon, 13 Nov 2006 22:13:33 +0100
Subject: Initial import

---
 src/invlib.h | 118 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 118 insertions(+)
 create mode 100644 src/invlib.h

(limited to 'src/invlib.h')

diff --git a/src/invlib.h b/src/invlib.h
new file mode 100644
index 0000000..d394835
--- /dev/null
+++ b/src/invlib.h
@@ -0,0 +1,118 @@
+/*===========================================================================
+ Copyright (c) 1998-2000, The Santa Cruz Operation 
+ All rights reserved.
+ 
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are met:
+
+ *Redistributions of source code must retain the above copyright notice,
+ this list of conditions and the following disclaimer.
+
+ *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.
+
+ *Neither name of The Santa Cruz Operation nor the names of its contributors
+ may be used to endorse or promote products derived from this software
+ without specific prior written permission. 
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 THE REGENTS 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. 
+ =========================================================================*/
+
+/* $Id: invlib.h,v 1.7 2004/02/12 18:14:05 broeker Exp $ */
+
+
+#ifndef CSCOPE_INVLIB_H
+#define CSCOPE_INVLIB_H
+
+#include <stdio.h>		/* need definition of FILE* */
+#include <limits.h>
+
+/* inverted index definitions */
+
+/* postings temporary file long number coding into characters */
+/* FIXME HBB: where would these definitions come from ? */
+#if CHAR_MAX==255
+# define	BASE		223	/* 255 - ' ' */
+# define	PRECISION	4	/* maximum digits after converting a long */
+#else
+# if CHAR_MAX==127	/* assume sign-extension of a char when converted to an int */
+#  define	BASE		95	/* 127 - ' ' */
+#  define	PRECISION	5	/* maximum digits after converting a long */
+# else
+  #error Need a platform with 8 bits in a char value
+# endif
+#endif
+
+/* inverted index access parameters */
+#define INVAVAIL	0
+#define INVBUSY		1
+#define INVALONE	2
+
+/* boolean set operations */
+#define	BOOL_OR		3
+#define	AND		4
+#define	NOT		5
+#define	REVERSENOT	6
+
+/* note that the entire first block is for parameters */
+typedef	struct	{
+	long	version;	/* inverted index format version */
+	long	filestat;	/* file status word  */
+	long	sizeblk;	/* size of logical block in bytes */
+	long	startbyte;	/* first byte of superfinger */
+	long	supsize;	/* size of superfinger in bytes */
+	long	cntlsize;	/* size of max cntl space (should be a multiple of BUFSIZ) */
+	long	share;		/* flag whether to use shared memory */
+} PARAM;
+
+typedef	struct {
+	FILE	*invfile;	/* the inverted file ptr */
+	FILE	*postfile;	/* posting file ptr */
+	PARAM	param;		/* control parameters for the file */
+	char	*iindex;	/* ptr to space for superindex */
+	union logicalblk *logblk;	/* ptr to space for a logical block */
+	long	numblk;		/* number of block presently at *logblk */
+	long	keypnt;		/* number item in present block found */
+} INVCONTROL;
+
+typedef        struct  {
+       short   offset;         /* offset in this logical block */
+       unsigned char size;     /* size of term */
+       unsigned char space;    /* number of longs of growth space */
+       long    post;           /* number of postings for this entry */
+} ENTRY;
+
+typedef	struct {
+	long	lineoffset;	/* source line database offset */
+	long	fcnoffset;	/* function name database offset */
+	long	fileindex : 24;	/* source file name index */
+	long	type : 8;	/* reference type (mark character) */
+} POSTING;
+
+extern	long	*srcoffset;	/* source file name database offsets */
+extern	int	nsrcoffset;	/* number of file name database offsets */
+
+
+void	boolclear(void);
+POSTING	*boolfile(INVCONTROL *invcntl, long *num, int boolarg);
+void	invclose(INVCONTROL *invcntl);
+void	invdump(INVCONTROL *invcntl, char *term);
+long	invfind(INVCONTROL *invcntl, char *searchterm);
+int	invforward(INVCONTROL *invcntl);
+int	invopen(INVCONTROL *invcntl, char *invname, char *invpost, int status);
+long	invmake(char *invname, char *invpost, FILE *infile);
+long	invterm(INVCONTROL *invcntl, char *term);
+
+#endif /* CSCOPE_INVLIB_H */
-- 
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