/******************************************************************************

 *

 * Project:  PROJ

 * Purpose:  ISO19111:2019 implementation

 * Author:   Even Rouault <even dot rouault at spatialys dot com>

 *

 ******************************************************************************

 * Copyright (c) 2018, Even Rouault <even dot rouault at spatialys dot com>

 *

 * 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 FROM_PROJ_CPP

#define FROM_PROJ_CPP

#endif

#include "proj/internal/internal.hpp"

#include <cmath>

#include <cstdint>

#include <cstring>

#ifdef _MSC_VER

#include <string.h>

#else

#include <strings.h>

#endif

#include <exception>

#include <iomanip> // std::setprecision

#include <locale>

#include <sstream> // std::istringstream and std::ostringstream

#include <string>

#include "sqlite3.h"

NS_PROJ_START

namespace internal {

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

/**

 * Replace all occurrences of before with after.

 */

std::string replaceAll(const std::string &str, const std::string &before,

                       const std::string &after) {

    std::string ret(str);

    const size_t nBeforeSize = before.size();

    const size_t nAfterSize = after.size();

    if (nBeforeSize) {

        size_t nStartPos = 0;

        while ((nStartPos = ret.find(before, nStartPos)) != std::string::npos) {

            ret.replace(nStartPos, nBeforeSize, after);

            nStartPos += nAfterSize;

        }

    }

    return ret;

}

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

inline static bool EQUALN(const char *a, const char *b, size_t size) {

#ifdef _MSC_VER

    return _strnicmp(a, b, size) == 0;

#else

    return strncasecmp(a, b, size) == 0;

#endif

}

/**

 * Case-insensitive equality test

 */

bool ci_equal(const std::string &a, const std::string &b) noexcept {

    const auto size = a.size();

    if (size != b.size()) {

        return false;

    }

    return EQUALN(a.c_str(), b.c_str(), size);

}

bool ci_equal(const std::string &a, const char *b) noexcept {

    const auto size = a.size();

    if (size != strlen(b)) {

        return false;

    }

    return EQUALN(a.c_str(), b, size);

}

bool ci_equal(const char *a, const char *b) noexcept {

    const auto size = strlen(a);

    if (size != strlen(b)) {

        return false;

    }

    return EQUALN(a, b, size);

}

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

bool ci_less(const std::string &a, const std::string &b) noexcept {

#ifdef _MSC_VER

    return _stricmp(a.c_str(), b.c_str()) < 0;

#else

    return strcasecmp(a.c_str(), b.c_str()) < 0;

#endif

}

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

/**

 * Convert to lower case.

 */

std::string tolower(const std::string &str)

{

    std::string ret(str);

    for (size_t i = 0; i < ret.size(); i++)

        ret[i] = static_cast<char>(::tolower(ret[i]));

    return ret;

}

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

/**

 * Convert to upper case.

 */

std::string toupper(const std::string &str)

{

    std::string ret(str);

    for (size_t i = 0; i < ret.size(); i++)

        ret[i] = static_cast<char>(::toupper(ret[i]));

    return ret;

}

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

/** Strip leading and trailing double quote characters */

std::string stripQuotes(const std::string &str) {

    if (str.size() >= 2 && str[0] == '"' && str.back() == '"') {

        return str.substr(1, str.size() - 2);

    }

    return str;

}

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

size_t ci_find(const std::string &str, const char *needle) noexcept {

    const size_t needleSize = strlen(needle);

    for (size_t i = 0; i + needleSize <= str.size(); i++) {

        if (EQUALN(str.c_str() + i, needle, needleSize)) {

            return i;

        }

    }

    return std::string::npos;

}

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

size_t ci_find(const std::string &str, const std::string &needle,

               size_t startPos) noexcept {

    const size_t needleSize = needle.size();

    for (size_t i = startPos; i + needleSize <= str.size(); i++) {

        if (EQUALN(str.c_str() + i, needle.c_str(), needleSize)) {

            return i;

        }

    }

    return std::string::npos;

}

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

/*

bool starts_with(const std::string &str, const std::string &prefix) noexcept {

    if (str.size() < prefix.size()) {

        return false;

    }

    return std::memcmp(str.c_str(), prefix.c_str(), prefix.size()) == 0;

}

*/

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

/*

bool starts_with(const std::string &str, const char *prefix) noexcept {

    const size_t prefixSize = std::strlen(prefix);

    if (str.size() < prefixSize) {

        return false;

    }

    return std::memcmp(str.c_str(), prefix, prefixSize) == 0;

}

*/

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

bool ci_starts_with(const char *str, const char *prefix) noexcept {

    const auto str_size = strlen(str);

    const auto prefix_size = strlen(prefix);

    if (str_size < prefix_size) {

        return false;

    }

    return EQUALN(str, prefix, prefix_size);

}

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

bool ci_starts_with(const std::string &str,

                    const std::string &prefix) noexcept {

    if (str.size() < prefix.size()) {

        return false;

    }

    return EQUALN(str.c_str(), prefix.c_str(), prefix.size());

}

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

bool ends_with(const std::string &str, const std::string &suffix) noexcept {

    if (str.size() < suffix.size()) {

        return false;

    }

    return std::memcmp(str.c_str() + str.size() - suffix.size(), suffix.c_str(),

                       suffix.size()) == 0;

}

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

double c_locale_stod(const std::string &s) {

    bool success;

    double val = c_locale_stod(s, success);

    if (!success) {

        throw std::invalid_argument("non double value");

    }

    return val;

}

double c_locale_stod(const std::string &s, bool &success) {

    success = true;

    const auto s_size = s.size();

    // Fast path

    if (s_size > 0 && s_size < 15) {

        std::int64_t acc = 0;

        std::int64_t div = 1;

        bool afterDot = false;

        size_t i = 0;

        if (s[0] == '-') {

            ++i;

            div = -1;

        } else if (s[0] == '+') {

            ++i;

        }

        for (; i < s_size; ++i) {

            const auto ch = s[i];

            if (ch >= '0' && ch <= '9') {

                acc = acc * 10 + ch - '0';

                if (afterDot) {

                    div *= 10;

                }

            } else if (ch == '.') {

                afterDot = true;

            } else {

                div = 0;

            }

        }

        if (div) {

            return static_cast<double>(acc) / div;

        }

    }

    std::istringstream iss(s);

    iss.imbue(std::locale::classic());

    double d;

    iss >> d;

    if (!iss.eof() || iss.fail()) {

        success = false;

        d = 0;

    }

    return d;

}

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

std::vector<std::string> split(const std::string &str, char separator) {

    std::vector<std::string> res;

    size_t lastPos = 0;

    size_t newPos = 0;

    while ((newPos = str.find(separator, lastPos)) != std::string::npos) {

        res.push_back(str.substr(lastPos, newPos - lastPos));

        lastPos = newPos + 1;

    }

    res.push_back(str.substr(lastPos));

    return res;

}

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

std::vector<std::string> split(const std::string &str,

                               const std::string &separator) {

    std::vector<std::string> res;

    size_t lastPos = 0;

    size_t newPos = 0;

    while ((newPos = str.find(separator, lastPos)) != std::string::npos) {

        res.push_back(str.substr(lastPos, newPos - lastPos));

        lastPos = newPos + separator.size();

    }

    res.push_back(str.substr(lastPos));

    return res;

}

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

#ifdef _WIN32

// For some reason, sqlite3_snprintf() in the sqlite3 builds used on AppVeyor

// doesn't round identically to the Unix builds, and thus breaks a number of

// unit test. So to avoid this, use the stdlib formatting

std::string toString(int val) {

    std::ostringstream buffer;

    buffer.imbue(std::locale::classic());

    buffer << val;

    return buffer.str();

}

std::string toString(double val, int precision) {

    std::ostringstream buffer;

    buffer.imbue(std::locale::classic());

    buffer << std::setprecision(precision);

    buffer << val;

    auto str = buffer.str();

    if (precision == 15 && str.find("9999999999") != std::string::npos) {

        buffer.str("");

        buffer.clear();

        buffer << std::setprecision(14);

        buffer << val;

        return buffer.str();

    }

    return str;

}

#else

std::string toString(int val) {

    // use sqlite3 API that is slightly faster than std::ostringstream

    // with forcing the C locale. sqlite3_snprintf() emulates a C locale.

    constexpr int BUF_SIZE = 16;

    char szBuffer[BUF_SIZE];

    sqlite3_snprintf(BUF_SIZE, szBuffer, "%d", val);

    return szBuffer;

}

std::string toString(double val, int precision) {

    // use sqlite3 API that is slightly faster than std::ostringstream

    // with forcing the C locale. sqlite3_snprintf() emulates a C locale.

    constexpr int BUF_SIZE = 32;

    char szBuffer[BUF_SIZE];

    sqlite3_snprintf(BUF_SIZE, szBuffer, "%.*g", precision, val);

    if (precision == 15 && strstr(szBuffer, "9999999999")) {

        sqlite3_snprintf(BUF_SIZE, szBuffer, "%.14g", val);

    }

    return szBuffer;

}

#endif

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

std::string concat(const char *a, const std::string &b) {

    std::string res(a);

    res += b;

    return res;

}

std::string concat(const char *a, const std::string &b, const char *c) {

    std::string res(a);

    res += b;

    res += c;

    return res;

}

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

// Avoid rounding issues due to year -> second (SI unit) -> year roundtrips

double getRoundedEpochInDecimalYear(double year) {

    // Try to see if the value is close to xxxx.yyy decimal year.

    if (std::fabs(1000 * year - std::round(1000 * year)) <= 1e-3) {

        year = std::round(1000 * year) / 1000.0;

    }

    return year;

}

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

} // namespace internal

NS_PROJ_END