Security-57031.1.35.tar.gz

[apple/security.git] / Security / libsecurity_utilities / lib / cfmunge.h

diff --git a/Security/libsecurity_utilities/lib/cfmunge.h b/Security/libsecurity_utilities/lib/cfmunge.h
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+/*
+ * Copyright (c) 2000-2004,2011,2014 Apple Inc. All Rights Reserved.
+ * 
+ * @APPLE_LICENSE_HEADER_START@
+ * 
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this
+ * file.
+ * 
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ * 
+ * @APPLE_LICENSE_HEADER_END@
+ */
+//
+// CoreFoundation building and parsing functions
+//
+#ifndef _H_CFMUNGE
+#define _H_CFMUNGE
+
+#include <security_utilities/cfutilities.h>
+#include <CoreFoundation/CoreFoundation.h>
+#include <cstdarg>
+
+namespace Security {
+
+
+//
+// Common interface to Mungers.
+// A CFMunge provides a one-pass, non-resettable scan through a format string,
+// performing various actions on the way.
+//
+class CFMunge {
+public:
+       CFMunge(const char *fmt, va_list arg);
+       ~CFMunge();
+
+protected:
+       char next();
+       bool next(char c);
+       
+       bool parameter();
+       
+protected:
+       const char *format;
+       va_list args;
+       CFAllocatorRef allocator;
+       OSStatus error;
+};
+
+
+//
+// A CFMake is a CFMunge for making CF data structures.
+//
+class CFMake : public CFMunge {
+public:
+       CFMake(const char *fmt, va_list arg) : CFMunge(fmt, arg) { }
+       
+       CFTypeRef make();
+       CFDictionaryRef addto(CFMutableDictionaryRef dict);
+       
+protected:
+       CFTypeRef makedictionary();
+       CFTypeRef makearray();
+       CFTypeRef makenumber();
+       CFTypeRef makestring();
+       CFTypeRef makeformat();
+       CFTypeRef makespecial();
+
+       CFDictionaryRef add(CFMutableDictionaryRef dict);
+};
+
+
+//
+// Make a CF object following a general recipe
+//
+CFTypeRef cfmake(const char *format, ...);
+CFTypeRef vcfmake(const char *format, va_list args);
+
+template <class CFType>
+CFType cfmake(const char *format, ...)
+{
+       va_list args;
+       va_start(args, format);
+       CFType result = CFType(vcfmake(format, args));
+       va_end(args);
+       return result;
+}
+
+CFDictionaryRef cfadd(CFMutableDictionaryRef dict, const char *format, ...);
+
+
+//
+// Parse out parts of a CF object following a general recipe.
+// Cfscan returns false on error; cfget throws.
+//
+bool cfscan(CFTypeRef source, const char *format, ...);
+bool vcfscan(CFTypeRef source, const char *format, va_list args);
+
+CFTypeRef cfget(CFTypeRef source, const char *format, ...);
+CFTypeRef vcfget(CFTypeRef source, const char *format, va_list args);
+
+template <class CFType>
+CFType cfget(CFTypeRef source, const char *format, ...)
+{
+       va_list args;
+       va_start(args, format);
+       CFType result = CFType(vcfget(source, format, args));
+       va_end(args);
+       return (result && CFTraits<CFType>::check(result)) ? result : NULL;
+}
+
+template <class CFType>
+class CFTemp : public CFRef<CFType> {
+public:
+       CFTemp(const char *format, ...)
+       {
+               va_list args;
+               va_start(args, format);
+               this->take(CFType(vcfmake(format, args)));
+               va_end(args);
+       }
+};
+
+
+}      // end namespace Security
+
+#endif //_H_CFMUNGE