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Source:SLASH'EM 0.0.7E7F2/dlb.h

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Below is the full text to dlb.h from the source code of SLASH'EM 0.0.7E7F2. To link to a particular line, write [[SLASH'EM 0.0.7E7F2/dlb.h#line123]], for example.

The latest source code for vanilla NetHack is at Source code.


The NetHack General Public License applies to screenshots, source code and other content from NetHack.
1.    /*	SCCS Id: @(#)dlb.h	3.4	1997/07/29	*/
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	"nhshare"		/* shareable library */
41.   #  define DLBAREA	FILE_AREA_SHARE
42.   #  define DLBFILE2	"nhushare"		/* unshareable library */
43.   #  define DLBAREA2	FILE_AREA_UNSHARE
44.   # endif
45.   # ifndef FILENAME_CMP
46.   #  define FILENAME_CMP	strcmp			/* case sensitive */
47.   # endif
48.   
49.   #endif /* DLBLIB */
50.   
51.   
52.   typedef struct dlb_handle {
53.       FILE *fp;		/* pointer to an external file, use if non-null */
54.   #ifdef DLBLIB
55.       library *lib;	/* pointer to library structure */
56.       long start;		/* offset of start of file */
57.       long size;		/* size of file */
58.       long mark;		/* current file marker */
59.   #endif
60.   #ifdef DLBRSRC
61.       int fd;		/* HandleFile file descriptor */
62.   #endif
63.   } dlb;
64.   
65.   #if defined(ULTRIX_PROTO) && !defined(__STDC__)
66.    /* buggy old Ultrix compiler wants this for the (*dlb_fread_proc)
67.       and (*dlb_fgets_proc) prototypes in struct dlb_procs (dlb.c);
68.       we'll use it in all the declarations for consistency */
69.   #define DLB_P struct dlb_handle *
70.   #else
71.   #define DLB_P dlb *
72.   #endif
73.   
74.   boolean NDECL(dlb_init);
75.   void NDECL(dlb_cleanup);
76.   
77.   #ifndef FILE_AREAS
78.   dlb *FDECL(dlb_fopen, (const char *,const char *));
79.   #else
80.   dlb *FDECL(dlb_fopen_area, (const char *,const char *,const char *));
81.   #endif
82.   int FDECL(dlb_fclose, (DLB_P));
83.   int FDECL(dlb_fread, (char *,int,int,DLB_P));
84.   int FDECL(dlb_fseek, (DLB_P,long,int));
85.   char *FDECL(dlb_fgets, (char *,int,DLB_P));
86.   int FDECL(dlb_fgetc, (DLB_P));
87.   long FDECL(dlb_ftell, (DLB_P));
88.   
89.   
90.   /* Resource DLB entry points */
91.   #ifdef DLBRSRC
92.   	boolean rsrc_dlb_init(void);
93.   	void rsrc_dlb_cleanup(void);
94.   	boolean rsrc_dlb_fopen(dlb *dp, const char *name, const char *mode);
95.   	int rsrc_dlb_fclose(dlb *dp);
96.   	int rsrc_dlb_fread(char *buf, int size, int quan, dlb *dp);
97.   	int rsrc_dlb_fseek(dlb *dp, long pos, int whence);
98.   	char *rsrc_dlb_fgets(char *buf, int len, dlb *dp);
99.   	int rsrc_dlb_fgetc(dlb *dp);
100.  	long rsrc_dlb_ftell(dlb *dp);
101.  #endif
102.  
103.  
104.  #else /* DLB */
105.  
106.  # define dlb FILE
107.  
108.  # define dlb_init()
109.  # define dlb_cleanup()
110.  
111.  #ifndef FILE_AREAS
112.  # define dlb_fopen	fopen
113.  #else
114.  # define dlb_fopen_area(a,b,c) fopen_datafile_area(a,b,c,FALSE)
115.  	/* TODO: someone more knowledgable make this better */
116.  #endif
117.  # define dlb_fclose	fclose
118.  # define dlb_fread	fread
119.  # define dlb_fseek	fseek
120.  # define dlb_fgets	fgets
121.  # define dlb_fgetc	fgetc
122.  # define dlb_ftell	ftell
123.  
124.  #endif /* DLB */
125.  
126.  
127.  /* various other I/O stuff we don't want to replicate everywhere */
128.  
129.  #ifndef SEEK_SET
130.  # define SEEK_SET 0
131.  #endif
132.  #ifndef SEEK_CUR
133.  # define SEEK_CUR 1
134.  #endif
135.  #ifndef SEEK_END
136.  # define SEEK_END 2
137.  #endif
138.  
139.  #define RDTMODE "r"
140.  #if (defined(MSDOS) || defined(WIN32) || defined(TOS) || defined(OS2)) && defined(DLB)
141.  #define WRTMODE "w+b"
142.  #else
143.  #define WRTMODE "w+"
144.  #endif
145.  #if (defined(MICRO) && !defined(AMIGA)) || defined(THINK_C) || defined(__MWERKS__) || defined(WIN32)
146.  # define RDBMODE "rb"
147.  # define WRBMODE "w+b"
148.  #else
149.  # define RDBMODE "r"
150.  # define WRBMODE "w+"
151.  #endif
152.  
153.  #endif	/* DLB_H */

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