/usr/include/wvstreams/unicallbackgen.h is in libwvstreams-dev 4.6.1-2build1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 | /* -*- Mode: C++ -*-
* Worldvisions Weaver Software:
* Copyright (C) 2002 Net Integration Technologies, Inc.
*
* A UniConf generator that executes callbacks to generate the value of keys
*/
#ifndef __UNICALLBACKGEN_H
#define __UNICALLBACKGEN_H
#include <map>
#include "unitempgen.h"
#include "wvstream.h"
#include "wvtr1.h"
typedef wv::function<WvString(const UniConfKey&)>
UniCallbackGenGetCallback;
typedef wv::function<void(const UniConfKey&, WvStringParm)>
UniCallbackGenSetCallback;
/**
* A UniConf generator that executes callbacks to generate the value of keys
*
* To make the callback fire and set the value of the key,
* call set(key, whatever). Calling get(key) returns the most recent
* generated value of the key.
*/
class UniCallbackGen: public UniTempGen
{
typedef std::map<UniConfKey, UniCallbackGenGetCallback> GetCallbackMap;
GetCallbackMap get_callbacks;
typedef std::map<UniConfKey, UniCallbackGenSetCallback> SetCallbackMap;
SetCallbackMap set_callbacks;
public:
bool update_before_get;
bool update_after_set;
UniCallbackGen():
update_before_get(false),
update_after_set(true) {}
virtual ~UniCallbackGen() {}
virtual void setgetcallback(const UniConfKey &key,
UniCallbackGenGetCallback get_callback)
{
if (get_callback)
get_callbacks[key] = get_callback;
else
get_callbacks.erase(key);
}
virtual void setsetcallback(const UniConfKey &key,
UniCallbackGenSetCallback set_callback)
{
if (set_callback)
set_callbacks[key] = set_callback;
else
set_callbacks.erase(key);
}
virtual void update(const UniConfKey &key,
WvStringParm value = WvString::null)
{
GetCallbackMap::iterator it = get_callbacks.find(key);
if (it != get_callbacks.end())
UniTempGen::set(key, it->second(key));
else
UniTempGen::set(key, value);
}
/***** Overridden members *****/
virtual WvString get(const UniConfKey &key)
{
if (update_before_get) update(key);
return UniTempGen::get(key);
}
virtual void set(const UniConfKey &key, WvStringParm value)
{
SetCallbackMap::iterator it = set_callbacks.find(key);
if (it != set_callbacks.end())
it->second(key, value);
if (update_after_set)
update(key, value);
}
};
#endif // __UNICALLBACKGEN_H
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