52 lines
1.0 KiB
C++
52 lines
1.0 KiB
C++
/*!********************************************************************
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Audacity: A Digital Audio Editor
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@file UrlDecode.cpp
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@brief Define a function to decode an URL encode string.
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Dmitry Vedenko
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**********************************************************************/
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#include "UrlDecode.h"
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#include "HexHelpers.h"
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namespace audacity
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{
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std::string UrlDecode (const std::string& url)
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{
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std::string result;
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const size_t length = url.length ();
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for (auto it = url.begin (), end = url.end (); it != end; ++it)
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{
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const char c = *it;
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if (c != '%')
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{
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result.push_back (c);
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}
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else
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{
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if (++it == url.end ())
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break; // Malformed input string
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const char c1 = *it;
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if (++it == url.end ())
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break; // Malformed input string
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const char c2 = *it;
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result.push_back (HexCharToNum (c1) << 4 | HexCharToNum (c2));
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}
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}
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return result;
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}
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}
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