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// Copyright 2015 Google Inc. All rights reserved
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef STRUTIL_H_
#define STRUTIL_H_
#include <string>
#include <string_view>
#include <vector>
class WordScanner {
public:
struct Iterator {
Iterator& operator++();
std::string_view operator*() const;
bool operator!=(const Iterator& r) const {
return in != r.in || s != r.s || i != r.i;
}
const std::string_view* in;
int s;
int i;
};
explicit WordScanner(std::string_view in);
Iterator begin() const;
Iterator end() const;
void Split(std::vector<std::string_view>* o);
private:
std::string_view in_;
};
class WordWriter {
public:
explicit WordWriter(std::string* o);
void MaybeAddWhitespace();
void Write(std::string_view s);
private:
std::string* out_;
bool needs_space_;
};
// Temporary modifies s[s.size()] to '\0'.
class ScopedTerminator {
public:
explicit ScopedTerminator(std::string_view s);
~ScopedTerminator();
private:
std::string_view s_;
char c_;
};
template <class String>
inline std::string JoinStrings(std::vector<String> v, const char* sep) {
std::string r;
for (std::string_view s : v) {
if (!r.empty()) {
r += sep;
}
r.append(s.begin(), s.end());
}
return r;
}
bool HasPrefix(std::string_view str, std::string_view prefix);
bool HasSuffix(std::string_view str, std::string_view suffix);
bool HasWord(std::string_view str, std::string_view w);
std::string_view TrimPrefix(std::string_view str, std::string_view prefix);
std::string_view TrimSuffix(std::string_view str, std::string_view suffix);
class Pattern {
public:
explicit Pattern(std::string_view pat);
bool Match(std::string_view str) const;
std::string_view Stem(std::string_view str) const;
void AppendSubst(std::string_view str,
std::string_view subst,
std::string* out) const;
void AppendSubstRef(std::string_view str,
std::string_view subst,
std::string* out) const;
private:
bool MatchImpl(std::string_view str) const;
std::string_view pat_;
size_t percent_index_;
};
std::string NoLineBreak(const std::string& s);
std::string_view TrimLeftSpace(std::string_view s);
std::string_view TrimRightSpace(std::string_view s);
std::string_view TrimSpace(std::string_view s);
std::string_view Dirname(std::string_view s);
std::string_view Basename(std::string_view s);
std::string_view GetExt(std::string_view s);
std::string_view StripExt(std::string_view s);
void NormalizePath(std::string* o);
void AbsPath(std::string_view s, std::string* o);
size_t FindOutsideParen(std::string_view s, char c);
size_t FindTwoOutsideParen(std::string_view s, char c1, char c2);
size_t FindThreeOutsideParen(std::string_view s, char c1, char c2, char c3);
size_t FindEndOfLine(std::string_view s, size_t e, size_t* lf_cnt);
// Strip leading sequences of './' from file names, so that ./file
// and file are considered to be the same file.
// From http://www.gnu.org/software/make/manual/make.html#Features
std::string_view TrimLeadingCurdir(std::string_view s);
void FormatForCommandSubstitution(std::string* s);
std::string SortWordsInString(std::string_view s);
std::string ConcatDir(std::string_view b, std::string_view n);
std::string EchoEscape(const std::string& str);
void EscapeShell(std::string* s);
bool IsInteger(std::string_view s);
#endif // STRUTIL_H_
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