WebKitVersionChecks.mm   [plain text]

/*
* Copyright (C) 2006 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of Apple Inc. ("Apple") nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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*/

#import "WebKitVersionChecks.h"

#import <mach-o/dyld.h>

static int WebKitLinkTimeVersion(void);
static int overriddenWebKitLinkTimeVersion;

BOOL WebKitLinkedOnOrAfter(int version)
{
#if !PLATFORM(IOS_FAMILY)
return (WebKitLinkTimeVersion() >= version);
#else
int32_t linkTimeVersion = WebKitLinkTimeVersion();
int32_t majorVersion = linkTimeVersion >> 16 & 0x0000FFFF;

// The application was not linked against UIKit so assume most recent WebKit
if (linkTimeVersion == -1)
return YES;

return (majorVersion >= version);
#endif
}

void setWebKitLinkTimeVersion(int version)
{
overriddenWebKitLinkTimeVersion = version;
}

static int WebKitLinkTimeVersion(void)
{
if (overriddenWebKitLinkTimeVersion)
return overriddenWebKitLinkTimeVersion;

#if !PLATFORM(IOS_FAMILY)
return NSVersionOfLinkTimeLibrary("WebKit");
#else
// <rdar://problem/6627758> Need to implement WebKitLinkedOnOrAfter
// Third party applications do not link against WebKit, but rather against UIKit.
return NSVersionOfLinkTimeLibrary("UIKit");
#endif
}

bool linkedOnOrAfter(SDKVersion sdkVersion)
{
return dyld_get_program_sdk_version() >= static_cast<uint32_t>(sdkVersion);
}