// Copyright (c), ETH Zurich and UNC Chapel Hill.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
//     * Redistributions of source code must retain the above copyright
//       notice, this list of conditions and the following disclaimer.
//
//     * Redistributions in binary form must reproduce the above copyright
//       notice, this list of conditions and the following disclaimer in the
//       documentation and/or other materials provided with the distribution.
//
//     * Neither the name of ETH Zurich and UNC Chapel Hill nor the names of
//       its contributors may be used to endorse or promote products derived
//       from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.

#pragma once

#include <string>
#include <vector>

namespace colmap {

// Locale-independent string-to-double conversion.
// Always uses '.' as decimal separator regardless of LC_NUMERIC.
double StringToDouble(const std::string& str);

// Format string by replacing embedded format specifiers with their respective
// values, see `printf` for more details. This is a modified implementation
// of Google's BSD-licensed StringPrintf function.
std::string StringPrintf(const char* format, ...);

// Replace all occurrences of `old_str` with `new_str` in the given string.
std::string StringReplace(const std::string& str,
                          const std::string& old_str,
                          const std::string& new_str);

// Get substring of string after the last occurrence of the search key.
std::string StringGetAfter(const std::string& str, const std::string& key);

// Split string into list of words using the given delimiters.
std::vector<std::string> StringSplit(const std::string& str,
                                     const std::string& delim);

// Check whether a string starts with a certain prefix.
bool StringStartsWith(const std::string& str, const std::string& prefix);

// Remove whitespace from string on both, left, or right sides.
void StringTrim(std::string* str);
void StringLeftTrim(std::string* str);
void StringRightTrim(std::string* str);

// Convert string to lower/upper case.
void StringToLower(std::string* str);
void StringToUpper(std::string* str);

// Check whether the sub-string is contained in the given string.
bool StringContains(const std::string& str, const std::string& sub_str);

// Convert a string from the platform's default encoding to UTF-8.
// On Windows: converts from ANSI code page (ACP) to UTF-8.
// On POSIX: assumes the input is already UTF-8 and returns it unchanged.
std::string PlatformToUTF8(const std::string& str);

// Convert a UTF-8 encoded string to the platform's default encoding.
// On Windows: converts to ANSI code page (ACP).
// On POSIX: returns the input unchanged.
std::string UTF8ToPlatform(const std::string& str);

namespace internal {
#ifdef _WIN32
// Convert a string from the specified Windows code page to UTF-8.
//
// This function is used internally for unit testing to verify roundtrip
// correctness of encoding conversions independent of the system code page.
std::string CodePageToUTF8Win(const std::string& str, unsigned int code_page);

// Convert a UTF-8 string to the specified Windows code page.
//
// This function is used internally for unit testing to verify roundtrip
// correctness of encoding conversions independent of the system code page.
std::string UTF8ToCodePageWin(const std::string& str, unsigned int code_page);
#endif
}  // namespace internal

}  // namespace colmap
