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/**
* @file Uri.cpp
*
* This module contains the implementation of the Uri::Uri class.
*
* © 2018 by Richard Walters
*/
#include <inttypes.h>
#include <string>
#include <Uri/Uri.hpp>
#include <vector>
namespace Uri {
/**
* This contains the private properties of a Uri instance.
*/
struct Uri::Impl {
/**
* This is the "scheme" element of the URI.
*/
std::string scheme;
/**
* This is the "host" element of the URI.
*/
std::string host;
/**
* This flag indicates whether or not the
* URI includes a port number.
*/
bool hasPort = false;
/**
* This is the port number element of the URI.
*/
uint16_t port = 0;
/**
* This is the "path" element of the URI,
* as a sequence of segments.
*/
std::vector< std::string > path;
};
Uri::~Uri() = default;
Uri::Uri()
: impl_(new Impl)
{
}
bool Uri::ParseFromString(const std::string& uriString) {
// First parse the scheme.
const auto schemeEnd = uriString.find(':');
impl_->scheme = uriString.substr(0, schemeEnd);
auto rest = uriString.substr(schemeEnd + 1);
// Next parse the host.
impl_->hasPort = false;
if (rest.substr(0, 2) == "//") {
const auto authorityEnd = rest.find('/', 2);
const auto portDelimiter = rest.find(':');
if (portDelimiter == std::string::npos) {
impl_->host = rest.substr(2, authorityEnd - 2);
} else {
impl_->host = rest.substr(2, portDelimiter - 2);
uint32_t newPort = 0;
for (auto c: rest.substr(portDelimiter + 1, authorityEnd - portDelimiter - 1)) {
if (
(c < '0')
|| (c > '9')
) {
return false;
}
newPort *= 10;
newPort += (uint16_t)(c - '0');
if (
(newPort & ~((1 << 16) - 1)) != 0
) {
return false;
}
}
impl_->port = (uint16_t)newPort;
impl_->hasPort = true;
}
rest = rest.substr(authorityEnd);
} else {
impl_->host.clear();
}
// Finally, parse the path.
impl_->path.clear();
if (rest == "/") {
// Special case of a path that is empty but needs a single
// empty-string element to indicate that it is absolute.
impl_->path.push_back("");
} else if (!rest.empty()) {
for(;;) {
auto pathDelimiter = rest.find('/');
if (pathDelimiter == std::string::npos) {
impl_->path.push_back(rest);
break;
} else {
impl_->path.emplace_back(
rest.begin(),
rest.begin() + pathDelimiter
);
rest = rest.substr(pathDelimiter + 1);
}
}
}
return true;
}
std::string Uri::GetScheme() const {
return impl_->scheme;
}
std::string Uri::GetHost() const {
return impl_->host;
}
std::vector< std::string > Uri::GetPath() const {
return impl_->path;
}
bool Uri::HasPort() const {
return impl_->hasPort;
}
uint16_t Uri::GetPort() const {
return impl_->port;
}
}
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