trunk/src/waysx.h

/***************************************
 $Header: /home/amb/CVS/routino/src/waysx.h,v 1.30 2010-12-20 19:02:31 amb Exp $

 A header file for the extended Ways structure.

 Part of the Routino routing software.
 ******************/ /******************
 This file Copyright 2008-2010 Andrew M. Bishop

 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU Affero General Public License as published by
 the Free Software Foundation, either version 3 of the License, or
 (at your option) any later version.

 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU Affero General Public License for more details.

 You should have received a copy of the GNU Affero General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
 ***************************************/


#ifndef WAYSX_H
#define WAYSX_H    /*+ To stop multiple inclusions. +*/

#include <stdint.h>

#include "types.h"

#include "typesx.h"
#include "ways.h"

#include "files.h"


/* Data structures */


/*+ An extended structure containing a single way. +*/
struct _WayX
{
 way_t    id;                   /*+ The way identifier; the OSM value. +*/

 index_t  prop;                 /*+ The index of the properties of the way in the compacted list. +*/

 Way      way;                  /*+ The real Way data. +*/
};


/*+ A structure containing a set of ways (memory format). +*/
struct _WaysX
{
 char    *filename;             /*+ The name of the temporary file (for the WaysX). +*/
 int      fd;                   /*+ The file descriptor of the temporary file (for the WaysX). +*/

 index_t  xnumber;              /*+ The number of unsorted extended ways. +*/

#if !SLIM

 WayX    *xdata;                /*+ The extended data for the Ways (sorted). +*/

#else

 WayX     xcached[2];           /*+ Two cached ways read from the file in slim mode. +*/

#endif

 index_t  number;               /*+ How many entries are still useful? +*/

 index_t  cnumber;              /*+ How many entries are there after compacting? +*/

 index_t *idata;                /*+ The index of the extended data for the Ways (sorted by ID). +*/

 char    *nfilename;            /*+ The name of the temporary file (for the names). +*/
 int      nfd;                  /*+ The file descriptor of the temporary file (for the names). +*/

 uint32_t nlength;              /*+ How long is the string of name entries? +*/
};


/* Functions */


WaysX *NewWayList(int append);
void FreeWayList(WaysX *waysx,int keep);

void SaveWayList(WaysX *waysx,const char *filename);

index_t IndexWayX(WaysX* waysx,way_t id);

void AppendWay(WaysX* waysx,way_t id,Way *way,const char *name);

void SortWayList(WaysX *waysx);

void CompactWayList(WaysX *waysx);


/* Macros / inline functions */

#if !SLIM

#define LookupWayX(waysx,index,position)  &(waysx)->xdata[index]
  
#else

static WayX *LookupWayX(WaysX* waysx,index_t index,int position);


/*++++++++++++++++++++++++++++++++++++++
  Lookup a particular extended way.

  WayX *LookupWayX Returns a pointer to the extended way with the specified id.

  WaysX* waysx The set of ways to process.

  index_t index The way index to look for.

  int position The position in the cache to use.
  ++++++++++++++++++++++++++++++++++++++*/

static inline WayX *LookupWayX(WaysX* waysx,index_t index,int position)
{
 SeekFile(waysx->fd,(off_t)index*sizeof(WayX));

 ReadFile(waysx->fd,&waysx->xcached[position-1],sizeof(WayX));

 return(&waysx->xcached[position-1]);
}


/*++++++++++++++++++++++++++++++++++++++
  Put back an extended way.

  WaysX* waysx The set of ways to process.

  index_t index The way index to put back.

  int position The position in the cache to use.
  ++++++++++++++++++++++++++++++++++++++*/

static inline void PutBackWayX(WaysX* waysx,index_t index,int position)
{
 SeekFile(waysx->fd,(off_t)index*sizeof(WayX));

 WriteFile(waysx->fd,&waysx->xcached[position-1],sizeof(WayX));
}

#endif /* SLIM */


#endif /* WAYSX_H */
1	/***************************************
2	$Header: /home/amb/CVS/routino/src/waysx.h,v 1.30 2010-12-20 19:02:31 amb Exp $
3
4	A header file for the extended Ways structure.
5
6	Part of the Routino routing software.
7	****************/ /****************
8	This file Copyright 2008-2010 Andrew M. Bishop
9
10	This program is free software: you can redistribute it and/or modify
11	it under the terms of the GNU Affero General Public License as published by
12	the Free Software Foundation, either version 3 of the License, or
13	(at your option) any later version.
14
15	This program is distributed in the hope that it will be useful,
16	but WITHOUT ANY WARRANTY; without even the implied warranty of
17	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18	GNU Affero General Public License for more details.
19
20	You should have received a copy of the GNU Affero General Public License
21	along with this program. If not, see <http://www.gnu.org/licenses/>.
22	***************************************/
23
24
25	#ifndef WAYSX_H
26	#define WAYSX_H /+ To stop multiple inclusions. +/
27
28	#include <stdint.h>
29
30	#include "types.h"
31
32	#include "typesx.h"
33	#include "ways.h"
34
35	#include "files.h"
36
37
38	/* Data structures */
39
40
41	/+ An extended structure containing a single way. +/
42	struct _WayX
43	{
44	way_t id; /+ The way identifier; the OSM value. +/
45
46	index_t prop; /+ The index of the properties of the way in the compacted list. +/
47
48	Way way; /+ The real Way data. +/
49	};
50
51
52	/+ A structure containing a set of ways (memory format). +/
53	struct _WaysX
54	{
55	char filename; /+ The name of the temporary file (for the WaysX). +*/
56	int fd; /+ The file descriptor of the temporary file (for the WaysX). +/
57
58	index_t xnumber; /+ The number of unsorted extended ways. +/
59
60	#if !SLIM
61
62	WayX xdata; /+ The extended data for the Ways (sorted). +*/
63
64	#else
65
66	WayX xcached[2]; /+ Two cached ways read from the file in slim mode. +/
67
68	#endif
69
70	index_t number; /+ How many entries are still useful? +/
71
72	index_t cnumber; /+ How many entries are there after compacting? +/
73
74	index_t idata; /+ The index of the extended data for the Ways (sorted by ID). +*/
75
76	char nfilename; /+ The name of the temporary file (for the names). +*/
77	int nfd; /+ The file descriptor of the temporary file (for the names). +/
78
79	uint32_t nlength; /+ How long is the string of name entries? +/
80	};
81
82
83	/* Functions */
84
85
86	WaysX *NewWayList(int append);
87	void FreeWayList(WaysX *waysx,int keep);
88
89	void SaveWayList(WaysX waysx,const char filename);
90
91	index_t IndexWayX(WaysX* waysx,way_t id);
92
93	void AppendWay(WaysX* waysx,way_t id,Way way,const char name);
94
95	void SortWayList(WaysX *waysx);
96
97	void CompactWayList(WaysX *waysx);
98
99
100	/* Macros / inline functions */
101
102	#if !SLIM
103
104	#define LookupWayX(waysx,index,position) &(waysx)->xdata[index]
105
106	#else
107
108	static WayX LookupWayX(WaysX waysx,index_t index,int position);
109
110
111	/*++++++++++++++++++++++++++++++++++++++
112	Lookup a particular extended way.
113
114	WayX *LookupWayX Returns a pointer to the extended way with the specified id.
115
116	WaysX* waysx The set of ways to process.
117
118	index_t index The way index to look for.
119
120	int position The position in the cache to use.
121	++++++++++++++++++++++++++++++++++++++*/
122
123	static inline WayX LookupWayX(WaysX waysx,index_t index,int position)
124	{
125	SeekFile(waysx->fd,(off_t)index*sizeof(WayX));
126
127	ReadFile(waysx->fd,&waysx->xcached[position-1],sizeof(WayX));
128
129	return(&waysx->xcached[position-1]);
130	}
131
132
133	/*++++++++++++++++++++++++++++++++++++++
134	Put back an extended way.
135
136	WaysX* waysx The set of ways to process.
137
138	index_t index The way index to put back.
139
140	int position The position in the cache to use.
141	++++++++++++++++++++++++++++++++++++++*/
142
143	static inline void PutBackWayX(WaysX* waysx,index_t index,int position)
144	{
145	SeekFile(waysx->fd,(off_t)index*sizeof(WayX));
146
147	WriteFile(waysx->fd,&waysx->xcached[position-1],sizeof(WayX));
148	}
149
150	#endif /* SLIM */
151
152
153	#endif /* WAYSX_H */