--- /dev/null
+/* $FreeBSD: src/lib/libc/nls/msgcat.h,v 1.8 2000/09/03 21:05:10 ache Exp $ */
+
+#ifndef _MSGCAT_H_
+#define _MSGCAT_H_
+
+
+/***********************************************************
+Copyright 1990, by Alfalfa Software Incorporated, Cambridge, Massachusetts.
+
+ All Rights Reserved
+
+Permission to use, copy, modify, and distribute this software and its
+documentation for any purpose and without fee is hereby granted,
+provided that the above copyright notice appear in all copies and that
+both that copyright notice and this permission notice appear in
+supporting documentation, and that Alfalfa's name not be used in
+advertising or publicity pertaining to distribution of the software
+without specific, written prior permission.
+
+ALPHALPHA DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
+ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
+ALPHALPHA BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
+ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
+ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
+SOFTWARE.
+
+If you make any modifications, bugfixes or other changes to this software
+we'd appreciate it if you could send a copy to us so we can keep things
+up-to-date. Many thanks.
+ Kee Hinckley
+ Alfalfa Software, Inc.
+ 267 Allston St., #3
+ Cambridge, MA 02139 USA
+ nazgul@alfalfa.com
+
+******************************************************************/
+
+
+#include <sys/types.h>
+
+/*
+ * On disk data structures
+ */
+
+/* For or'd constants */
+#define MCMakeId(s,m) (u_int32_t) ( ((unsigned short)s << (sizeof(short)*8)) \
+ | (unsigned short)m )
+#define MCSetId(id) (unsigned int) ( id >> (sizeof(short) * 8) )
+#define MCMsgId(id) (unsigned int) ( (id << (sizeof(short) * 8)) \
+ >> (sizeof(short) * 8) )
+#define MCMagicLen 8
+#define MCMagic "*nazgul*"
+#define MCLastMsg 0
+#define MCLastSet 0
+
+#define MCMajorVer 1
+#define MCMinorVer 0
+
+/*
+ * Critical note here. Sets and Messages *MUST* be stored in ascending
+ * order. There are stored that way (by specification) in the original
+ * data file, however in the process of merging in new stuff you might
+ * mix that up. Don't! The catget stuff does a binary search and will
+ * totally lose it if these aren't in order (not contiguous mind you, just
+ * in order. If this turns out to be a major problem this could be enhanced
+ * by adding a 'sorted' flag to the db, and sorting msgs and sets at load
+ * time if things aren't sorted, but I'd like not to have to do that.
+ */
+
+/*
+ * I have tried here to define data structures which can be used
+ * while the catalog is on disk, and at runtime.
+ * This is rather dangerous of course, but I think it can be done without
+ * overly increasing the memory usage, and it makes loading and storing
+ * somewhat simpler and less prone to accidents. I have also tried to
+ * define on disk data structures which can be updated in place, so that
+ * with a very large catalog (e.g. all system errors) you don't have to
+ * load everything in memory in order to add or update one set. With
+ * this in mind there are "invalid" flags which allow items to be
+ * invalidated and thus not loaded at runtime. Note however that although
+ * I pay attention to these when I load the DB, I do not currently use
+ * them in gencat (it just reads everything into memory), so there is
+ * no guarantee that this will all work.
+ */
+
+/* These should be publicly available */
+
+#define MCLoadBySet 0 /* Load entire sets as they are used */
+#define MCLoadAll 1 /* Load entire DB on catopen */
+
+/*
+ * MCOffsetT - Union to handle both disk and runtime pointers
+ */
+typedef union {
+ off_t off;
+ char *str;
+ void *ptr;
+ struct _MCMsgT *msg;
+ struct _MCSetT *set;
+} MCOffsetT;
+
+#ifdef __LP64__
+#pragma pack(4)
+#endif /* __LP64__ */
+/*
+ * MCMsgT - Message structure (disk and runtime)
+ */
+typedef struct _MCMsgT {
+ int32_t msgId; /* Id of this message */
+ MCOffsetT msg; /* Relative offset on disk or pointer in memory */
+ int32_t invalid; /* Valid on disk, loaded in memory */
+} MCMsgT;
+
+/*
+ * MCSetT - Set structure (disk and runtime)
+ */
+typedef struct _MCSetT {
+ int32_t setId; /* Id of this set */
+ off_t nextSet; /* Offset of next set on disk */
+ union {
+ off_t firstMsg; /* Offset to first Msg (while on disk) */
+ MCMsgT *msgs; /* Pointer to array of msgs (in mem, loaded) */
+ } u;
+ MCOffsetT data; /* Offset to data, or pointer to data */
+ int32_t dataLen; /* Length of data area on disk */
+ int32_t numMsgs; /* Number of messages */
+ int32_t invalid; /* Valid on disk, loaded in memory */
+} MCSetT;
+#ifdef __LP64__
+#pragma pack()
+#endif /* __LP64__ */
+
+/*
+ * MCCatT - Runtime catalog pointer
+ */
+typedef struct {
+ int32_t loadType; /* How to load the messages (see MSLoadType) */
+ FILE *fp; /* File descriptor of catalog (if load-on-demand) */
+ int32_t numSets; /* Number of sets */
+ MCSetT *sets; /* Pointer to the sets */
+ off_t firstSet; /* Offset of first set on disk */
+} MCCatT;
+
+/*
+ * MCHeaderT - Disk file header
+ */
+typedef struct {
+ char magic[MCMagicLen]; /* Magic cookie "*nazgul*" */
+ int32_t majorVer; /* ++ on incompatible changes */
+ int32_t minorVer; /* ++ on compatible changes */
+ int32_t flags; /* Informational flags */
+ int32_t numSets; /* Number of valid Sets */
+ off_t firstSet; /* Offset of first set on disk */
+} MCHeaderT;
+
+/* Some flags */
+#define MC68KByteOrder 0x01
+#define MCn86ByteOrder 0x02
+
+#endif /* !_MSGCAT_H_ */
projects / apple / libc.git / blobdiff