nghttp2/examples/util.h

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2012-01-29 16:34:10 +01:00
/*
* Spdylay - SPDY Library
*
* Copyright (c) 2012 Tatsuhiro Tsujikawa
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#ifndef UTIL_H
#define UTIL_H
#include <vector>
#include <string>
#include <algorithm>
#include <sstream>
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namespace spdylay {
namespace util {
extern const std::string DEFAULT_STRIP_CHARSET;
template<typename InputIterator>
std::pair<InputIterator, InputIterator> stripIter
(InputIterator first, InputIterator last,
const std::string& chars = DEFAULT_STRIP_CHARSET)
{
for(; first != last &&
std::find(chars.begin(), chars.end(), *first) != chars.end(); ++first);
if(first == last) {
return std::make_pair(first, last);
}
InputIterator left = last-1;
for(; left != first &&
std::find(chars.begin(), chars.end(), *left) != chars.end(); --left);
return std::make_pair(first, left+1);
}
template<typename InputIterator, typename OutputIterator>
OutputIterator splitIter
(InputIterator first,
InputIterator last,
OutputIterator out,
char delim,
bool doStrip = false,
bool allowEmpty = false)
{
for(InputIterator i = first; i != last;) {
InputIterator j = std::find(i, last, delim);
std::pair<InputIterator, InputIterator> p(i, j);
if(doStrip) {
p = stripIter(i, j);
}
if(allowEmpty || p.first != p.second) {
*out++ = p;
}
i = j;
if(j != last) {
++i;
}
}
if(allowEmpty &&
(first == last || *(last-1) == delim)) {
*out++ = std::make_pair(last, last);
}
return out;
}
template<typename InputIterator, typename OutputIterator>
OutputIterator split
(InputIterator first,
InputIterator last,
OutputIterator out,
char delim,
bool doStrip = false,
bool allowEmpty = false)
{
for(InputIterator i = first; i != last;) {
InputIterator j = std::find(i, last, delim);
std::pair<InputIterator, InputIterator> p(i, j);
if(doStrip) {
p = stripIter(i, j);
}
if(allowEmpty || p.first != p.second) {
*out++ = std::string(p.first, p.second);
}
i = j;
if(j != last) {
++i;
}
}
if(allowEmpty &&
(first == last || *(last-1) == delim)) {
*out++ = std::string(last, last);
}
return out;
}
template<typename InputIterator, typename DelimiterType>
std::string strjoin(InputIterator first, InputIterator last,
const DelimiterType& delim)
{
std::string result;
if(first == last) {
return result;
}
InputIterator beforeLast = last-1;
for(; first != beforeLast; ++first) {
result += *first;
result += delim;
}
result += *beforeLast;
return result;
}
template<typename InputIterator>
std::string joinPath(InputIterator first, InputIterator last)
{
std::vector<std::string> elements;
for(;first != last; ++first) {
if(*first == "..") {
if(!elements.empty()) {
elements.pop_back();
}
} else if(*first == ".") {
// do nothing
} else {
elements.push_back(*first);
}
}
return strjoin(elements.begin(), elements.end(), "/");
}
bool isAlpha(const char c);
bool isDigit(const char c);
bool isHexDigit(const char c);
bool inRFC3986UnreservedChars(const char c);
std::string percentEncode(const unsigned char* target, size_t len);
std::string percentEncode(const std::string& target);
std::string percentDecode
(std::string::const_iterator first, std::string::const_iterator last);
std::string http_date(time_t t);
time_t parse_http_date(const std::string& s);
template<typename T>
std::string to_str(T value)
{
std::stringstream ss;
ss << value;
return ss.str();
}
template<typename InputIterator1, typename InputIterator2>
bool startsWith
(InputIterator1 first1,
InputIterator1 last1,
InputIterator2 first2,
InputIterator2 last2)
{
if(last1-first1 < last2-first2) {
return false;
}
return std::equal(first2, last2, first1);
}
bool startsWith(const std::string& a, const std::string& b);
struct CaseCmp {
bool operator()(char lhs, char rhs) const
{
if('A' <= lhs && lhs <= 'Z') {
lhs += 'a'-'A';
}
if('A' <= rhs && rhs <= 'Z') {
rhs += 'a'-'A';
}
return lhs == rhs;
}
};
template<typename InputIterator1, typename InputIterator2>
bool istartsWith
(InputIterator1 first1,
InputIterator1 last1,
InputIterator2 first2,
InputIterator2 last2)
{
if(last1-first1 < last2-first2) {
return false;
}
return std::equal(first2, last2, first1, CaseCmp());
}
bool istartsWith(const std::string& a, const std::string& b);
bool istartsWith(const char *a, const char* b);
template<typename InputIterator1, typename InputIterator2>
bool endsWith
(InputIterator1 first1,
InputIterator1 last1,
InputIterator2 first2,
InputIterator2 last2)
{
if(last1-first1 < last2-first2) {
return false;
}
return std::equal(first2, last2, last1-(last2-first2));
}
bool endsWith(const std::string& a, const std::string& b);
bool strieq(const char *a, const char *b);
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} // namespace util
} // namespace spdylay
#endif // UTIL_H