/***************************************************************************
* Copyright (C) 2010
* by Dimok
*
* This software is provided 'as-is', without any express or implied
* warranty. In no event will the authors be held liable for any
* damages arising from the use of this software.
*
* Permission is granted to anyone to use this software for any
* purpose, including commercial applications, and to alter it and
* redistribute it freely, subject to the following restrictions:
*
* 1. The origin of this software must not be misrepresented; you
* must not claim that you wrote the original software. If you use
* this software in a product, an acknowledgment in the product
* documentation would be appreciated but is not required.
*
* 2. Altered source versions must be plainly marked as such, and
* must not be misrepresented as being the original software.
*
* 3. This notice may not be removed or altered from any source
* distribution.
*
* for WiiXplorer 2010
***************************************************************************/

#include "StringTools.h"

#include <string>

#include <memory>

#include <cstdarg>
#include <cstdio>
#include <cstring>

std::string string_format(const char *format, ...) {
    char stack_buf[128];
    va_list args;
    va_start(args, format);
    int len = std::vsnprintf(stack_buf, sizeof(stack_buf), format, args);
    va_end(args);

    if (len >= 0 && static_cast<size_t>(len) < sizeof(stack_buf)) {
        return std::string(stack_buf, len);
    }

    // on error return the unformatted string
    if (len < 0) {
        return std::string(format);
    }

    const auto buf = make_unique_nothrow<char[]>(static_cast<size_t>(len));
    if (!buf) {
        DEBUG_FUNCTION_LINE_ERR("string_format failed, not enough memory");
        OSFatal("WiiUPluginBackend: string_format failed, not enough memory");
        return std::string("");
    }

    va_start(args, format);
    std::vsnprintf(buf.get(), len, format, args);
    va_end(args);
    return std::string(buf.get(), len);
}

std::string StringTools::truncate(const std::string &str, const size_t width, const bool show_ellipsis) {
    if (str.length() > width - 3) {
        if (show_ellipsis) {
            return str.substr(0, width - 3) + "...";
        } else {
            return str.substr(0, width - 3);
        }
    }
    return str;
}

int32_t StringTools::strtokcmp(const char *string, const char *compare, const char *separator) {
    if (!string || !compare)
        return -1;

    char TokCopy[512];
    strncpy(TokCopy, compare, sizeof(TokCopy));
    TokCopy[511] = '\0';

    char *strTok = strtok(TokCopy, separator);

    while (strTok != nullptr) {
        if (strcasecmp(string, strTok) == 0) {
            return 0;
        }
        strTok = strtok(nullptr, separator);
    }

    return -1;
}

const char *StringTools::FullpathToFilename(const char *path) {
    if (!path)
        return path;

    const char *ptr      = path;
    const char *Filename = ptr;

    while (*ptr != '\0') {
        if (ptr[0] == '/' && ptr[1] != '\0')
            Filename = ptr + 1;

        ++ptr;
    }

    return Filename;
}

void StringTools::RemoveDoubleSlashes(std::string &str) {
    uint32_t length = str.size();

    //! clear path of double slashes
    for (uint32_t i = 1; i < length; ++i) {
        if (str[i - 1] == '/' && str[i] == '/') {
            str.erase(i, 1);
            i--;
            length--;
        }
    }
}