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.

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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 */