third_party/npapi/npspy/extern/nspr/prvrsion.h

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /*
   3  * The contents of this file are subject to the Mozilla Public
   4  * License Version 1.1 (the "License"); you may not use this file
   5  * except in compliance with the License. You may obtain a copy of
   6  * the License at http://www.mozilla.org/MPL/
   7  *
   8  * Software distributed under the License is distributed on an "AS
   9  * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
  10  * implied. See the License for the specific language governing
  11  * rights and limitations under the License.
  12  *
  13  * The Original Code is the Netscape Portable Runtime (NSPR).
  14  *
  15  * The Initial Developer of the Original Code is Netscape
  16  * Communications Corporation.  Portions created by Netscape are
  17  * Copyright (C) 1998-2000 Netscape Communications Corporation.  All
  18  * Rights Reserved.
  19  *
  20  * Contributor(s):
  21  *
  22  * Alternatively, the contents of this file may be used under the
  23  * terms of the GNU General Public License Version 2 or later (the
  24  * "GPL"), in which case the provisions of the GPL are applicable
  25  * instead of those above.  If you wish to allow use of your
  26  * version of this file only under the terms of the GPL and not to
  27  * allow others to use your version of this file under the MPL,
  28  * indicate your decision by deleting the provisions above and
  29  * replace them with the notice and other provisions required by
  30  * the GPL.  If you do not delete the provisions above, a recipient
  31  * may use your version of this file under either the MPL or the
  32  * GPL.
  33  */
  34
  35
  36 /* author: jstewart */
  37
  38 #if defined(_PRVERSION_H)
  39 #else
  40 #define _PRVERSION_H
  41
  42 #include "prtypes.h"
  43
  44 PR_BEGIN_EXTERN_C
  45
  46 /* All components participating in the PR version protocol must expose
  47  * a structure and a function. The structure is defined below and named
  48  * according to the naming conventions outlined further below.  The function
  49  * is called libVersionPoint and returns a pointer to this structure.
  50  */
  51
  52 /* on NT, always pack the structure the same. */
  53 #ifdef _WIN32
  54 #pragma pack(push, 8)
  55 #endif
  56
  57 typedef struct {
  58     /*
  59      * The first field defines which version of this structure is in use.
  60      * At this time, only version 2 is specified. If this value is not
  61      * 2, you must read no further into the structure.
  62      */
  63     PRInt32    version;
  64
  65     /* for Version 2, this is the body format. */
  66     PRInt64         buildTime;      /* 64 bits - usecs since midnight, 1/1/1970 */
  67     char *          buildTimeString;/* a human readable version of the time */
  68
  69     PRUint8   vMajor;               /* Major version of this component */
  70     PRUint8   vMinor;               /* Minor version of this component */
  71     PRUint8   vPatch;               /* Patch level of this component */
  72
  73     PRBool          beta;           /* true if this is a beta component */
  74     PRBool          debug;          /* true if this is a debug component */
  75     PRBool          special;        /* true if this component is a special build */
  76
  77     char *          filename;       /* The original filename */
  78     char *          description;    /* description of this component */
  79     char *          security;       /* level of security in this component */
  80     char *          copyright;      /* The copyright for this file */
  81     char *          comment;        /* free form field for misc usage */
  82     char *          specialString;  /* the special variant for this build */
  83 } PRVersionDescription;
  84
  85 /* on NT, restore the previous packing */
  86 #ifdef _WIN32
  87 #pragma pack(pop)
  88 #endif
  89
  90 /*
  91  * All components must define an entrypoint named libVersionPoint which
  92  * is of type versionEntryPointType.
  93  *
  94  * For example, for a library named libfoo, we would have:
  95  *
  96  *   PRVersionDescription prVersionDescription_libfoo =
  97  *   {
  98  *       ...
  99  *   };
 100  *
 101  *   PR_IMPLEMENT(const PRVersionDescription*) libVersionPoint(void)
 102  *   {
 103  *       return &prVersionDescription_libfoo;
 104  *   }
 105  */
 106 typedef const PRVersionDescription *(*versionEntryPointType)(void);
 107
 108 /*
 109  * Where you declare your libVersionPoint, do it like this:
 110  * PR_IMPLEMENT(const PRVersionDescription *) libVersionPoint(void) {
 111  *  fill it in...
 112  * }
 113  */
 114
 115 /*
 116  * NAMING CONVENTION FOR struct
 117  *
 118  * all components should also expose a static PRVersionDescription
 119  * The name of the struct should be calculated as follows:
 120  * Take the value of filename. (If filename is not specified, calculate
 121  * a short, unique string.)  Convert all non-alphanumeric characters
 122  * to '_'.  To this, prepend "PRVersionDescription_".  Thus for libfoo.so,
 123  * the symbol name is "PRVersionDescription_libfoo_so".
 124  * so the file should have
 125  * PRVersionDescription PRVersionDescription_libfoo_so { fill it in };
 126  * on NT, this file should be declspec export.
 127  */
 128
 129 PR_END_EXTERN_C
 130
 131 #endif  /* defined(_PRVERSION_H) */
 132
 133 /* prvrsion.h */
 134