49 lines
1.5 KiB
C++
49 lines
1.5 KiB
C++
|
// Copyright 2009-2020 Intel Corporation
|
||
|
|
// SPDX-License-Identifier: Apache-2.0
|
||
|
|
|
||
|
|
#include "stringstream.h"
|
||
|
|
|
||
|
|
namespace embree
|
||
|
|
{
|
||
|
|
static const std::string stringChars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789 _.,+-=:/*\\";
|
||
|
|
|
||
|
|
/* creates map for fast categorization of characters */
|
||
|
|
static void createCharMap(bool map[256], const std::string& chrs) {
|
||
|
|
for (size_t i=0; i<256; i++) map[i] = false;
|
||
|
|
for (size_t i=0; i<chrs.size(); i++) map[uint8_t(chrs[i])] = true;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* simple tokenizer */
|
||
|
|
StringStream::StringStream(const Ref<Stream<int> >& cin, const std::string& seps, const std::string& endl, bool multiLine)
|
||
|
|
: cin(cin), endl(endl), multiLine(multiLine)
|
||
|
|
{
|
||
|
|
createCharMap(isSepMap,seps);
|
||
|
|
createCharMap(isValidCharMap,stringChars);
|
||
|
|
}
|
||
|
|
|
||
|
|
std::string StringStream::next()
|
||
|
|
{
|
||
|
|
/* skip separators */
|
||
|
|
while (cin->peek() != EOF) {
|
||
|
|
if (endl != "" && cin->peek() == '\n') { cin->drop(); return endl; }
|
||
|
|
if (multiLine && cin->peek() == '\\') {
|
||
|
|
cin->drop();
|
||
|
|
if (cin->peek() == '\n') { cin->drop(); continue; }
|
||
|
|
cin->unget();
|
||
|
|
}
|
||
|
|
if (!isSeparator(cin->peek())) break;
|
||
|
|
cin->drop();
|
||
|
|
}
|
||
|
|
|
||
|
|
/* parse everything until the next separator */
|
||
|
|
std::vector<char> str; str.reserve(64);
|
||
|
|
while (cin->peek() != EOF && !isSeparator(cin->peek())) {
|
||
|
|
int c = cin->get();
|
||
|
|
if (!isValidChar(c)) throw std::runtime_error("invalid character "+std::string(1,c)+" in input");
|
||
|
|
str.push_back((char)c);
|
||
|
|
}
|
||
|
|
str.push_back(0);
|
||
|
|
return std::string(str.data());
|
||
|
|
}
|
||
|
|
}
|