/usr/include/x86_64-linux-gnu/qcc/Environ.h is in liballjoyn-common-dev-1604 16.04a-3.
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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 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 | /**
* @file
*
* Define a class for accessing environment variables.
*/
/******************************************************************************
*
*
* Copyright AllSeen Alliance. All rights reserved.
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, 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.
******************************************************************************/
#ifndef _QCC_ENVIRON_H
#define _QCC_ENVIRON_H
#include <qcc/platform.h>
#include <map>
#include <qcc/Mutex.h>
#include <qcc/String.h>
#include <qcc/Stream.h>
#include <qcc/LockLevel.h>
#include <Status.h>
namespace qcc {
/**
* Abstract encapsulation of the system environment variables.
*/
class Environ {
public:
/** Environment variable const_iterator */
typedef std::map<qcc::String, qcc::String>::const_iterator const_iterator;
/**
* Create a new envionment (useful when launching other programs). Lock checking
* is disabled to allow lock order checking to use Environ.
*/
Environ() : lock(LOCK_LEVEL_CHECKING_DISABLED) { }
/**
* Return a pointer to the Environ instance that applies to the running application.
*
* @return Pointer to the environment variable singleton.
*/
static Environ * AJ_CALL GetAppEnviron();
/**
* Return a specific environment variable
*/
qcc::String Find(const qcc::String& key, const char* defaultValue = NULL);
/**
* Return a specific environment variable
*/
qcc::String Find(const char* key, const char* defaultValue = NULL) { return Find(qcc::String(key), defaultValue); }
/**
* Preload environment variables with the specified prefix
*/
void Preload(const char* keyPrefix);
/**
* Add an environment variable
*/
void Add(const qcc::String& key, const qcc::String& value);
/**
* Parse a env settings file.
* Each line is expected to be of the form <key> = <value>
*/
QStatus Parse(Source& source);
/**
* Return an iterator to the first environment variable.
*
* @return A const_iterator pointing to the beginning of the environment variables.
*/
const_iterator Begin() const { return vars.begin(); }
/**
* Return an iterator to one past the last environment variable.
*
* @return A const_iterator pointing to the end of the environment variables.
*/
const_iterator End() const { return vars.end(); }
/**
* Return the number of entries in the environment.
*
* @return Number of entries in the environment.
*/
size_t Size() const { return vars.size(); }
private:
static void Init();
static void Shutdown();
friend class StaticGlobals;
std::map<qcc::String, qcc::String> vars; ///< Environment variable storage.
qcc::Mutex lock; ///< Mutex to make operations thread-safe.
};
}
#endif
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