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Source:NetHack 3.3.0/dlb.h

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Below is the full text to dlb.h from the source code of NetHack 3.3.0. To link to a particular line, write [[NetHack 3.3.0/dlb.h#line123]], for example.

Warning! This is the source code from an old release. For the latest release, see Source code

The NetHack General Public License applies to screenshots, source code and other content from NetHack.
1.    /*	SCCS Id: @(#)dlb.h	3.3	97/07/29	*/
2.    /* Copyright (c) Kenneth Lorber, Bethesda, Maryland, 1993. */
3.    /* NetHack may be freely redistributed.  See license for details. */
4.    
5.    #ifndef DLB_H
6.    #define DLB_H
7.    /* definitions for data library */
8.    
9.    #ifdef DLB
10.   
11.   /* implementations */
12.   #ifdef MAC
13.   # define DLBRSRC	/* use Mac resources */
14.   #else
15.   # define DLBLIB		/* use a set of external files */
16.   #endif
17.   
18.   #ifdef DLBLIB
19.   /* directory structure in memory */
20.   typedef struct dlb_directory {
21.       char *fname;	/* file name as seen from calling code */
22.       long foffset;	/* offset in lib file to start of this file */
23.       long fsize;		/* file size */
24.       char handling;	/* how to handle the file (compression, etc) */
25.   } libdir;
26.   
27.   /* information about each open library */
28.   typedef struct dlb_library {
29.       FILE *fdata;	/* opened data file */
30.       long fmark;		/* current file mark */
31.       libdir *dir;	/* directory of library file */
32.       char *sspace;	/* pointer to string space */
33.       long nentries;	/* # of files in directory */
34.       long rev;		/* dlb file revision */
35.       long strsize;	/* dlb file string size */
36.   } library;
37.   
38.   /* library definitions */
39.   # ifndef DLBFILE
40.   #  define DLBFILE	"nhdat"			/* name of library */
41.   # endif
42.   # ifndef FILENAME_CMP
43.   #  define FILENAME_CMP	strcmp			/* case sensitive */
44.   # endif
45.   
46.   #endif /* DLBLIB */
47.   
48.   
49.   typedef struct dlb_handle {
50.       FILE *fp;		/* pointer to an external file, use if non-null */
51.   #ifdef DLBLIB
52.       library *lib;	/* pointer to library structure */
53.       long start;		/* offset of start of file */
54.       long size;		/* size of file */
55.       long mark;		/* current file marker */
56.   #endif
57.   #ifdef DLBRSRC
58.       int fd;		/* HandleFile file descriptor */
59.   #endif
60.   } dlb;
61.   
62.   #if defined(ULTRIX_PROTO) && !defined(__STDC__)
63.    /* buggy old Ultrix compiler wants this for the (*dlb_fread_proc)
64.       and (*dlb_fgets_proc) prototypes in struct dlb_procs (dlb.c);
65.       we'll use it in all the declarations for consistency */
66.   #define DLB_P struct dlb_handle *
67.   #else
68.   #define DLB_P dlb *
69.   #endif
70.   
71.   boolean NDECL(dlb_init);
72.   void NDECL(dlb_cleanup);
73.   
74.   dlb *FDECL(dlb_fopen, (const char *,const char *));
75.   int FDECL(dlb_fclose, (DLB_P));
76.   int FDECL(dlb_fread, (char *,int,int,DLB_P));
77.   int FDECL(dlb_fseek, (DLB_P,long,int));
78.   char *FDECL(dlb_fgets, (char *,int,DLB_P));
79.   int FDECL(dlb_fgetc, (DLB_P));
80.   long FDECL(dlb_ftell, (DLB_P));
81.   
82.   
83.   /* Resource DLB entry points */
84.   #ifdef DLBRSRC
85.   	boolean rsrc_dlb_init(void);
86.   	void rsrc_dlb_cleanup(void);
87.   	boolean rsrc_dlb_fopen(dlb *dp, const char *name, const char *mode);
88.   	int rsrc_dlb_fclose(dlb *dp);
89.   	int rsrc_dlb_fread(char *buf, int size, int quan, dlb *dp);
90.   	int rsrc_dlb_fseek(dlb *dp, long pos, int whence);
91.   	char *rsrc_dlb_fgets(char *buf, int len, dlb *dp);
92.   	int rsrc_dlb_fgetc(dlb *dp);
93.   	long rsrc_dlb_ftell(dlb *dp);
94.   #endif
95.   
96.   
97.   #else /* DLB */
98.   
99.   # define dlb FILE
100.  
101.  # define dlb_init()
102.  # define dlb_cleanup()
103.  
104.  # define dlb_fopen	fopen
105.  # define dlb_fclose	fclose
106.  # define dlb_fread	fread
107.  # define dlb_fseek	fseek
108.  # define dlb_fgets	fgets
109.  # define dlb_fgetc	fgetc
110.  # define dlb_ftell	ftell
111.  
112.  #endif /* DLB */
113.  
114.  
115.  /* various other I/O stuff we don't want to replicate everywhere */
116.  
117.  #ifndef SEEK_SET
118.  # define SEEK_SET 0
119.  #endif
120.  #ifndef SEEK_CUR
121.  # define SEEK_CUR 1
122.  #endif
123.  #ifndef SEEK_END
124.  # define SEEK_END 2
125.  #endif
126.  
127.  #define RDTMODE "r"
128.  #if (defined(MSDOS) || defined(WIN32)) && defined(DLB)
129.  #define WRTMODE "w+b"
130.  #else
131.  #define WRTMODE "w+"
132.  #endif
133.  #if (defined(MICRO) && !defined(AMIGA)) || defined(THINK_C) || defined(__MWERKS__)
134.  # define RDBMODE "rb"
135.  # define WRBMODE "w+b"
136.  #else
137.  # define RDBMODE "r"
138.  # define WRBMODE "w+"
139.  #endif
140.  
141.  #endif	/* DLB_H */

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