void Toolbox::SplitUriComponents(UriComponents& components,
const std::string& uri)
{
static const char URI_SEPARATOR = '/';
components.clear();
if (uri.size() == 0 ||
uri[0] != URI_SEPARATOR)
{
throw OrthancException(ErrorCode_UriSyntax);
}
// Count the number of slashes in the URI to make an assumption
// about the number of components in the URI
unsigned int estimatedSize = 0;
for (unsigned int i = 0; i < uri.size(); i++)
{
if (uri[i] == URI_SEPARATOR)
estimatedSize++;
}
components.reserve(estimatedSize - 1);
unsigned int start = 1;
unsigned int end = 1;
while (end < uri.size())
{
// This is the loop invariant
assert(uri[start - 1] == '/' && (end >= start));
if (uri[end] == '/')
{
components.push_back(std::string(&uri[start], end - start));
end++;
start = end;
}
else
{
end++;
}
}
if (start < uri.size())
{
components.push_back(std::string(&uri[start], end - start));
}
for (size_t i = 0; i < components.size(); i++)
{
if (components[i].size() == 0)
{
// Empty component, as in: "/coucou//e"
throw OrthancException(ErrorCode_UriSyntax);
}
}
}
bool RestApiPath::Match(IHttpHandler::Arguments& components,
UriComponents& trailing,
const UriComponents& uri) const
{
assert(uri_.size() == components_.size());
if (uri.size() < uri_.size())
{
return false;
}
if (!hasTrailing_ && uri.size() > uri_.size())
{
return false;
}
components.clear();
trailing.clear();
assert(uri_.size() <= uri.size());
for (size_t i = 0; i < uri_.size(); i++)
{
if (components_[i].size() == 0)
{
// This URI component is not a free parameter
if (uri_[i] != uri[i])
{
return false;
}
}
else
{
// This URI component is a free parameter
components[components_[i]] = uri[i];
}
}
if (hasTrailing_)
{
trailing.assign(uri.begin() + uri_.size(), uri.end());
}
return true;
}
void Toolbox::TruncateUri(UriComponents& target,
const UriComponents& source,
size_t fromLevel)
{
target.clear();
if (source.size() > fromLevel)
{
target.resize(source.size() - fromLevel);
size_t j = 0;
for (size_t i = fromLevel; i < source.size(); i++, j++)
{
target[j] = source[i];
}
assert(j == target.size());
}
}