/*==LICENSE==*

CyanWorlds.com Engine - MMOG client, server and tools
Copyright (C) 2011  Cyan Worlds, Inc.

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.

You can contact Cyan Worlds, Inc. by email legal@cyan.com
 or by snail mail at:
      Cyan Worlds, Inc.
      14617 N Newport Hwy
      Mead, WA   99021

*==LICENSE==*/
#include "hsFiles.h"
#include <string.h>
#include "hsUtils.h"

#include "hsExceptions.h"

#if HS_BUILD_FOR_MAC
    #define kDirChar        ':'
#elif HS_BUILD_FOR_WIN32
    #define kDirChar        '\\'
#else
    #define kDirChar        '/'
#endif


static const char* FindNameInPath(const char path[])
{
    const char* name = ::strrchr(path, kDirChar);
    
    if (name == nil)
        name = path;
    return name;
}

///////////////////////////////////////////////////////////////////////
#if !HS_BUILD_FOR_PS2

hsFile::hsFile() : fPathAndName(nil), fFILE(nil)
{
}

hsFile::hsFile(const char pathAndName[]) : fPathAndName(nil), fFILE(nil)
{
    if (pathAndName)
        fPathAndName = hsStrcpy(pathAndName);
}

hsFile::~hsFile()
{
    this->SetPathAndName(nil);
}

const char* hsFile::GetPathAndName()
{
    return fPathAndName;
}

void hsFile::SetPathAndName(const char pathAndName[])
{
    this->Close();

    if (fPathAndName)
    {   delete[] fPathAndName;
        fPathAndName = nil;
    }
    if (pathAndName)
        fPathAndName = hsStrcpy(pathAndName);
}

const char* hsFile::GetName()
{
    return FindNameInPath(this->GetPathAndName());
}

FILE* hsFile::OpenFILE(const char mode[], hsBool throwIfFailure)
{
    this->Close();

    //  We call the virtual method here rather than using
    //  fPathAndName directly, allowing a subclass to construct
    //  the name if necessary
    //
    const char* name = this->GetPathAndName();
    if (name)
        fFILE = ::fopen(name, mode);

    hsThrowIfTrue(throwIfFailure && fFILE == nil);
    return fFILE;
}

hsStream* hsFile::OpenStream(const char mode[], hsBool throwIfFailure)
{
    FILE* file = this->OpenFILE(mode, throwIfFailure);

    if (file)
    {   hsUNIXStream*   stream = TRACKED_NEW hsUNIXStream;
        stream->SetFILE(file);
        return stream;
    }
    return nil;
}

void hsFile::Close()
{
    if (fFILE)
    {   int err = ::fflush(fFILE);
        hsIfDebugMessage(err != 0, "fflush failed", err);
        err = ::fclose(fFILE);
        hsIfDebugMessage(err != 0, "fclose failed", err);
        fFILE = nil;
    }
}
#endif

///////////////////////////////////////////////////////////////////////

hsBool hsFolderIterator::NextFileSuffix(const char suffix[])
{
    while (this->NextFile())
    {   const char* fileSuffix = ::strrchr(this->GetFileName(), '.');
        if (fileSuffix != nil && stricmp(fileSuffix, suffix) == 0)
            return true;
    }
    return false;
}

int hsFolderIterator::GetPathAndName(char pathandname[])
{
    const char* name = this->GetFileName();
    int         pathLen = hsStrlen(fPath);

    // add 1 for null terminator
    int totalLen = pathLen + sizeof(kDirChar) + hsStrlen(name) + 1;
    hsAssert(totalLen <= kFolderIterator_MaxPath, "Overrun kFolderIterator_MaxPath");

    if (pathandname)
    {   hsStrcpy(pathandname, fPath);
        if (pathLen > 0 && pathandname[pathLen - 1] != kDirChar)
            pathandname[pathLen++] = kDirChar;
        hsStrcpy(pathandname + pathLen, name);
    }
    return totalLen;
}

FILE* hsFolderIterator::OpenFILE(const char mode[])
{
    char fileName[kFolderIterator_MaxPath];

    (void)this->GetPathAndName(fileName);

    return ::fopen(fileName, mode);
}