137 lines
3.7 KiB
C++
137 lines
3.7 KiB
C++
#include "./uri.hpp"
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#include "./debug/panic.hpp"
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using cruft::uri;
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///////////////////////////////////////////////////////////////////////////////
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cruft::uri::uri (const char *str):
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uri (std::string (str))
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{ ; }
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//-----------------------------------------------------------------------------
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uri::uri (cruft::view<const char *> _value):
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uri (std::string (_value.begin (), _value.end ()))
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{ ; }
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//-----------------------------------------------------------------------------
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uri::uri (const std::string &_value):
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uri (std::string (_value))
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{ ; }
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//-----------------------------------------------------------------------------
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uri::uri (uri const &rhs)
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: m_views (rhs.m_views)
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, m_value (rhs.m_value)
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{
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auto const offset = rhs.m_value.data () - m_value.data ();
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for (auto &i: m_views)
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i = { i.begin () - offset, i.end () - offset };
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}
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//-----------------------------------------------------------------------------
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uri& uri::operator= (uri &&rhs) noexcept
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{
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m_views = std::move (rhs.m_views);
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m_value = std::move (rhs.m_value);
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return *this;
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}
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///////////////////////////////////////////////////////////////////////////////
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static uint8_t
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hex_to_uint (char c)
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{
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if (c >= '0' && c <= '9')
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return c - '0';
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if (c >= 'A' && c <= 'F')
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return c - 'A' + 10;
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if (c >= 'a' && c <= 'f')
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return c - 'a' + 10;
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unreachable ();
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}
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//-----------------------------------------------------------------------------
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std::string
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cruft::uri::percent_decode (view<const char*> s)
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{
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if (s.size () == 0)
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return std::string ();
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// Early check for late percent-encoding so we can simplify the decode loop
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{
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auto tail = std::find (s.size () < 3 ? s.begin ()
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: s.end () - 2,
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s.end (),
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'%');
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if (tail != s.end ())
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throw parse_error ("triple overlaps end");
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}
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// Allocate and size a potentially overlong output string. This allows us
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// to copy directly into its buffer. We'll shorten it at the end.
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std::string out;
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out.resize (s.size ());
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// Find the percent, copy until that, decode, advance, repeat.
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auto out_cursor = out.begin ();
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for (auto i = s.begin (); i < s.end (); ++i) {
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auto cursor = std::find (i, s.end (), '%');
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if (cursor == s.end ()) {
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out_cursor = std::copy (i, s.end (), out_cursor);
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break;
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}
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out_cursor = std::copy (i, cursor, out_cursor);
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*out_cursor = hex_to_uint (cursor[1]) << 4 | hex_to_uint(cursor[2]);
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i += 3;
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}
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out.resize (out.end () - out_cursor);
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return out;
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}
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//-----------------------------------------------------------------------------
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std::ostream&
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cruft::operator<< (std::ostream &os, cruft::uri::component c)
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{
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switch (c) {
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case cruft::uri::SCHEME: return os << "SCHEME";
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case cruft::uri::HIERARCHICAL: return os << "HIERARCHICAL";
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case cruft::uri::AUTHORITY: return os << "AUTHORITY";
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case cruft::uri::USER: return os << "USER";
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case cruft::uri::HOST: return os << "HOST";
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case cruft::uri::PORT: return os << "PORT";
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case cruft::uri::PATH: return os << "PATH";
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case cruft::uri::QUERY: return os << "QUERY";
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case cruft::uri::FRAGMENT: return os << "FRAGMENT";
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case cruft::uri::NUM_COMPONENTS:
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unreachable ();
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}
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unreachable ();
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}
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//-----------------------------------------------------------------------------
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std::ostream&
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cruft::operator<< (std::ostream &os, cruft::uri const &val)
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{
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return os << val.value ();
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}
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