//
// Generated By: dol2asm
// Translation Unit: JSUFileStream
//

#include "JSystem/JSupport/JSUFileStream.h"
#include "dol2asm.h"
#include "dolphin/types.h"

//
// Declarations:
//

/* 802DC638-802DC67C 2D6F78 0044+00 0/0 1/1 0/0 .text __ct__18JSUFileInputStreamFP7JKRFile */
JSUFileInputStream::JSUFileInputStream(JKRFile* pFile) {
    mFile = pFile;
    mPosition = 0;
}

/* 802DC67C-802DC74C 2D6FBC 00D0+00 1/0 0/0 0/0 .text            readData__18JSUFileInputStreamFPvl
 */
u32 JSUFileInputStream::readData(void* pBuffer, s32 length) {
    s32 lenRead = 0;
    if (mFile->isAvailable()) {
        // TODO: the function probably returns u32
        // there are probably more functions that return u32 instead of s32
        if (mPosition + length > (u32)mFile->getFileSize()) {
            length = mFile->getFileSize() - mPosition;
        }
        if (length > 0) {
            lenRead = mFile->readData(pBuffer, length, mPosition);
            if (lenRead < 0) {
                return 0;
            } else {
                mPosition += lenRead;
            }
        }
    }
    return lenRead;
}

/* 802DC74C-802DC82C 2D708C 00E0+00 1/0 0/0 0/0 .text
 * seekPos__18JSUFileInputStreamFl17JSUStreamSeekFrom           */
s32 JSUFileInputStream::seekPos(s32 pos, JSUStreamSeekFrom seekFrom) {
    s32 oldPos = mPosition;
    switch (seekFrom) {
    case JSUStreamSeekFrom_SET:
        mPosition = pos;
        break;
    case JSUStreamSeekFrom_END:
        mPosition = mFile->getFileSize() - pos;
        break;
    case JSUStreamSeekFrom_CUR:
        mPosition += pos;
        break;
    }
    if (mPosition < 0) {
        mPosition = 0;
    }
    if (mPosition > mFile->getFileSize()) {
        mPosition = mFile->getFileSize();
    }
    return mPosition - oldPos;
}

/* 802DC82C-802DC85C 2D716C 0030+00 1/0 0/0 0/0 .text            getLength__18JSUFileInputStreamCFv
 */
s32 JSUFileInputStream::getLength() const {
    return mFile->getFileSize();
}

/* 802DC85C-802DC864 2D719C 0008+00 1/0 0/0 0/0 .text getPosition__18JSUFileInputStreamCFv */
s32 JSUFileInputStream::getPosition() const {
    return mPosition;
}