From c39b5d4c409e74489a23a1478b6973d80f0c4be0 Mon Sep 17 00:00:00 2001
From: jwalz <jwalz>
Date: Sat, 5 Jan 2002 21:05:47 +0000
Subject: [PATCH] *** empty log message ***

---
 include/dlb.h | 141 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 141 insertions(+)
 create mode 100644 include/dlb.h

diff --git a/include/dlb.h b/include/dlb.h
new file mode 100644
index 000000000..0527100c2
--- /dev/null
+++ b/include/dlb.h
@@ -0,0 +1,141 @@
+/*	SCCS Id: @(#)dlb.h	3.3	97/07/29	*/
+/* Copyright (c) Kenneth Lorber, Bethesda, Maryland, 1993. */
+/* NetHack may be freely redistributed.  See license for details. */
+
+#ifndef DLB_H
+#define DLB_H
+/* definitions for data library */
+
+#ifdef DLB
+
+/* implementations */
+#ifdef MAC
+# define DLBRSRC	/* use Mac resources */
+#else
+# define DLBLIB		/* use a set of external files */
+#endif
+
+#ifdef DLBLIB
+/* directory structure in memory */
+typedef struct dlb_directory {
+    char *fname;	/* file name as seen from calling code */
+    long foffset;	/* offset in lib file to start of this file */
+    long fsize;		/* file size */
+    char handling;	/* how to handle the file (compression, etc) */
+} libdir;
+
+/* information about each open library */
+typedef struct dlb_library {
+    FILE *fdata;	/* opened data file */
+    long fmark;		/* current file mark */
+    libdir *dir;	/* directory of library file */
+    char *sspace;	/* pointer to string space */
+    long nentries;	/* # of files in directory */
+    long rev;		/* dlb file revision */
+    long strsize;	/* dlb file string size */
+} library;
+
+/* library definitions */
+# ifndef DLBFILE
+#  define DLBFILE	"nhdat"			/* name of library */
+# endif
+# ifndef FILENAME_CMP
+#  define FILENAME_CMP	strcmp			/* case sensitive */
+# endif
+
+#endif /* DLBLIB */
+
+
+typedef struct dlb_handle {
+    FILE *fp;		/* pointer to an external file, use if non-null */
+#ifdef DLBLIB
+    library *lib;	/* pointer to library structure */
+    long start;		/* offset of start of file */
+    long size;		/* size of file */
+    long mark;		/* current file marker */
+#endif
+#ifdef DLBRSRC
+    int fd;		/* HandleFile file descriptor */
+#endif
+} dlb;
+
+#if defined(ULTRIX_PROTO) && !defined(__STDC__)
+ /* buggy old Ultrix compiler wants this for the (*dlb_fread_proc)
+    and (*dlb_fgets_proc) prototypes in struct dlb_procs (dlb.c);
+    we'll use it in all the declarations for consistency */
+#define DLB_P struct dlb_handle *
+#else
+#define DLB_P dlb *
+#endif
+
+boolean NDECL(dlb_init);
+void NDECL(dlb_cleanup);
+
+dlb *FDECL(dlb_fopen, (const char *,const char *));
+int FDECL(dlb_fclose, (DLB_P));
+int FDECL(dlb_fread, (char *,int,int,DLB_P));
+int FDECL(dlb_fseek, (DLB_P,long,int));
+char *FDECL(dlb_fgets, (char *,int,DLB_P));
+int FDECL(dlb_fgetc, (DLB_P));
+long FDECL(dlb_ftell, (DLB_P));
+
+
+/* Resource DLB entry points */
+#ifdef DLBRSRC
+	boolean rsrc_dlb_init(void);
+	void rsrc_dlb_cleanup(void);
+	boolean rsrc_dlb_fopen(dlb *dp, const char *name, const char *mode);
+	int rsrc_dlb_fclose(dlb *dp);
+	int rsrc_dlb_fread(char *buf, int size, int quan, dlb *dp);
+	int rsrc_dlb_fseek(dlb *dp, long pos, int whence);
+	char *rsrc_dlb_fgets(char *buf, int len, dlb *dp);
+	int rsrc_dlb_fgetc(dlb *dp);
+	long rsrc_dlb_ftell(dlb *dp);
+#endif
+
+
+#else /* DLB */
+
+# define dlb FILE
+
+# define dlb_init()
+# define dlb_cleanup()
+
+# define dlb_fopen	fopen
+# define dlb_fclose	fclose
+# define dlb_fread	fread
+# define dlb_fseek	fseek
+# define dlb_fgets	fgets
+# define dlb_fgetc	fgetc
+# define dlb_ftell	ftell
+
+#endif /* DLB */
+
+
+/* various other I/O stuff we don't want to replicate everywhere */
+
+#ifndef SEEK_SET
+# define SEEK_SET 0
+#endif
+#ifndef SEEK_CUR
+# define SEEK_CUR 1
+#endif
+#ifndef SEEK_END
+# define SEEK_END 2
+#endif
+
+#define RDTMODE "r"
+#if (defined(MSDOS) || defined(WIN32) || defined(TOS)) && defined(DLB)
+#define WRTMODE "w+b"
+#else
+#define WRTMODE "w+"
+#endif
+#if (defined(MICRO) && !defined(AMIGA)) || defined(THINK_C) || defined(__MWERKS__)
+# define RDBMODE "rb"
+# define WRBMODE "w+b"
+#else
+# define RDBMODE "r"
+# define WRBMODE "w+"
+#endif
+
+#endif	/* DLB_H */