nativeapi/src/url_opener.cpp at main · libnativeapi/nativeapi · GitHub

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#include "url_opener.h"

#include <algorithm>

#include <cctype>

namespace nativeapi {

namespace {

std::string Trim(const std::string& value) {

size_t start = 0;

while (start < value.size() && std::isspace(static_cast<unsigned char>(value[start]))) {

++start;

}

size_t end = value.size();

while (end > start && std::isspace(static_cast<unsigned char>(value[end - 1]))) {

--end;

}

return value.substr(start, end - start);

}

std::string ToLower(std::string value) {

std::transform(value.begin(), value.end(), value.begin(), [](unsigned char c) {

return static_cast<char>(std::tolower(c));

});

return value;

}

UrlOpenResult ValidateUrl(const std::string& raw_url) {

const std::string url = Trim(raw_url);

if (url.empty()) {

UrlOpenResult result;

result.success = false;

result.error_code = UrlOpenErrorCode::kInvalidUrlEmpty;

result.error_message = "URL is empty.";

return result;

}

const size_t scheme_separator = url.find(':');

if (scheme_separator == std::string::npos || scheme_separator == 0) {

UrlOpenResult result;

result.success = false;

result.error_code = UrlOpenErrorCode::kInvalidUrlMissingScheme;

result.error_message = "URL must include an explicit scheme (http or https).";

return result;

}

const std::string scheme = ToLower(url.substr(0, scheme_separator));

if (scheme != "http" && scheme != "https") {

UrlOpenResult result;

result.success = false;

result.error_code = UrlOpenErrorCode::kInvalidUrlUnsupportedScheme;

result.error_message = "Only http and https URLs are supported.";

return result;

}

UrlOpenResult ok;

ok.success = true;

ok.error_code = UrlOpenErrorCode::kNone;

return ok;

}

} // namespace

// ---------------------------------------------------------------------------

// UrlOpener::Impl

// ---------------------------------------------------------------------------

bool UrlOpener::Impl::CanOpen(const std::string& url) const {

(void)url;

return true;

}

// ---------------------------------------------------------------------------

// UrlOpener

// ---------------------------------------------------------------------------

UrlOpener& UrlOpener::GetInstance() {

static UrlOpener instance;

return instance;

}

bool UrlOpener::CanOpen(const std::string& url) const {

if (!ValidateUrl(url).success) {

return false;

}

return pimpl_->CanOpen(url);

}

UrlOpenResult UrlOpener::Open(const std::string& url) const {

UrlOpenResult result = ValidateUrl(url);

if (!result.success) {

return result;

}

return pimpl_->Open(url);

}

bool UrlOpener::IsSupported() const {

return pimpl_->IsSupported();

}

} // namespace nativeapi

nativeapi/src/url_opener.cpp at main · libnativeapi/nativeapi · GitHub

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