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36 lines
1.1 KiB
C
36 lines
1.1 KiB
C
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// util/hex.h
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/* Copyright 2009 10gen Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#pragma once
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namespace mongo {
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//can't use hex namespace because it conflicts with hex iostream function
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inline int fromHex( char c ) {
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if ( '0' <= c && c <= '9' )
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return c - '0';
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if ( 'a' <= c && c <= 'f' )
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return c - 'a' + 10;
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if ( 'A' <= c && c <= 'F' )
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return c - 'A' + 10;
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assert( false );
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return 0xff;
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}
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inline char fromHex( const char *c ) {
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return ( fromHex( c[ 0 ] ) << 4 ) | fromHex( c[ 1 ] );
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}
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}
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