Initial commit
This commit is contained in:
Jonas Kulla
commit
ff25887f41
119 changed files with 24901 additions and 0 deletions
735
src/filesystem.cpp
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735
src/filesystem.cpp
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/*
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** filesystem.cpp
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**
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** This file is part of mkxp.
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**
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** Copyright (C) 2013 Jonas Kulla <Nyocurio@gmail.com>
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**
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** mkxp is free software: you can redistribute it and/or modify
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** it under the terms of the GNU General Public License as published by
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** the Free Software Foundation, either version 2 of the License, or
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** (at your option) any later version.
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**
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** mkxp is distributed in the hope that it will be useful,
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** but WITHOUT ANY WARRANTY; without even the implied warranty of
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** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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** GNU General Public License for more details.
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**
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** You should have received a copy of the GNU General Public License
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** along with mkxp. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "filesystem.h"
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#include "util.h"
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#include "exception.h"
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#include "physfs.h"
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#include <QHash>
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#include <QByteArray>
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#include "stdio.h"
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#include "string.h"
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#include <QDebug>
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struct RGSS_entryData
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{
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qint64 offset;
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quint64 size;
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quint32 startMagic;
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};
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struct RGSS_entryHandle
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{
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RGSS_entryData data;
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quint32 currentMagic;
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quint64 currentOffset;
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PHYSFS_Io *io;
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RGSS_entryHandle(const RGSS_entryData &data)
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: data(data),
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currentMagic(data.startMagic),
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currentOffset(0)
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{}
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RGSS_entryHandle(const RGSS_entryHandle &other)
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: data(other.data),
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currentMagic(other.currentMagic),
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currentOffset(other.currentOffset)
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{}
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};
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typedef QList<QByteArray> QByteList;
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struct RGSS_archiveData
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{
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PHYSFS_Io *archiveIo;
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QHash<QByteArray, RGSS_entryData> entryHash;
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QHash<QByteArray, bool> dirHash;
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};
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static bool
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readUint32(PHYSFS_Io *io, quint32 &result)
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{
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char buff[4];
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PHYSFS_sint64 count = io->read(io, buff, 4);
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result = ((buff[0] << 0x00) & 0x000000FF) |
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((buff[1] << 0x08) & 0x0000FF00) |
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((buff[2] << 0x10) & 0x00FF0000) |
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((buff[3] << 0x18) & 0xFF000000) ;
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return (count == 4);
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}
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#define RGSS_HEADER_1 0x53534752
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#define RGSS_HEADER_2 0x1004441
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#define RGSS_MAGIC 0xDEADCAFE
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#define PHYSFS_ALLOC(type) \
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static_cast<type*>(PHYSFS_getAllocator()->Malloc(sizeof(type)))
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static inline quint32
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advanceMagic(quint32 &magic)
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{
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quint32 old = magic;
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magic = magic * 7 + 3;
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return old;
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}
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struct MagicState
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{
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quint32 magic;
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quint64 offset;
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MagicState(quint64 offset = 0)
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: offset(offset)
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{
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magic = RGSS_MAGIC;
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for (uint i = 0; i < (offset/4); ++i)
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advanceBlock();
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}
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quint8 advancePath()
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{
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quint8 ret = magic & 0xFF;
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offset++;
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advanceBlock();
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return ret;
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}
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quint8 advanceData()
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{
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quint8 ret = magic & 0xFF;
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if (offset++ % 4 == 0)
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advanceBlock();
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return ret;
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}
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private:
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void advanceBlock()
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{
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magic = magic * 7 + 3;
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}
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};
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static PHYSFS_sint64
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RGSS_ioRead(PHYSFS_Io *self, void *buffer, PHYSFS_uint64 len)
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{
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RGSS_entryHandle *entry = static_cast<RGSS_entryHandle*>(self->opaque);
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quint64 toRead = qMin(entry->data.size - entry->currentOffset, len);
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quint64 offs = entry->currentOffset;
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entry->io->seek(entry->io, entry->data.offset + offs);
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quint64 buffI = 0;
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for (quint64 o = offs; o < offs + toRead;)
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{
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quint8 bitOffset = (0x8 * (o % 4));
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quint8 magicByte = (entry->currentMagic >> bitOffset) & 0xFF;
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quint8 byte;
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entry->io->read(entry->io, &byte, 1);
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((quint8*) buffer)[buffI++] = byte ^ magicByte;
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if (++o % 4 == 0)
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advanceMagic(entry->currentMagic);
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}
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entry->currentOffset += toRead;
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return toRead;
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}
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static int
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RGSS_ioSeek(PHYSFS_Io *self, PHYSFS_uint64 offset)
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{
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RGSS_entryHandle *entry = static_cast<RGSS_entryHandle*>(self->opaque);
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if (offset == entry->currentOffset)
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return 1;
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if (offset > entry->data.size-1)
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return 0;
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/* If rewinding, we need to rewind to begining */
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if (offset < entry->currentOffset)
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{
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entry->currentOffset = 0;
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entry->currentMagic = entry->data.startMagic;
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}
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/* For each 4 bytes sought, advance magic */
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quint64 dwordsSought = (offset - entry->currentOffset) / 4;
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for (quint64 i = 0; i < dwordsSought; ++i)
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advanceMagic(entry->currentMagic);
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entry->currentOffset = offset;
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entry->io->seek(entry->io, entry->data.offset + entry->currentOffset);
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return 1;
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}
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static PHYSFS_sint64
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RGSS_ioTell(PHYSFS_Io *self)
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{
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RGSS_entryHandle *entry = static_cast<RGSS_entryHandle*>(self->opaque);
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return entry->currentOffset;
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}
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static PHYSFS_sint64
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RGSS_ioLength(PHYSFS_Io *self)
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{
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RGSS_entryHandle *entry = static_cast<RGSS_entryHandle*>(self->opaque);
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return entry->data.size;
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}
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static PHYSFS_Io*
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RGSS_ioDuplicate(PHYSFS_Io *self)
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{
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RGSS_entryHandle *entry = static_cast<RGSS_entryHandle*>(self->opaque);
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RGSS_entryHandle *entryDup = new RGSS_entryHandle(*entry);
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PHYSFS_Io *dup = PHYSFS_ALLOC(PHYSFS_Io);
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*dup = *self;
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dup->opaque = entryDup;
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return dup;
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}
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static void
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RGSS_ioDestroy(PHYSFS_Io *self)
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{
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RGSS_entryHandle *entry = static_cast<RGSS_entryHandle*>(self->opaque);
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delete entry;
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PHYSFS_getAllocator()->Free(self);
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}
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static const PHYSFS_Io RGSS_IoTemplate =
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{
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0, /* version */
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0, /* opaque */
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RGSS_ioRead,
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0, /* write */
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RGSS_ioSeek,
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RGSS_ioTell,
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RGSS_ioLength,
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RGSS_ioDuplicate,
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0, /* flush */
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RGSS_ioDestroy
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};
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static void*
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RGSS_openArchive(PHYSFS_Io *io, const char *, int forWrite)
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{
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if (forWrite)
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return 0;
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/* Check header */
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quint32 header1, header2;
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readUint32(io, header1);
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readUint32(io, header2);
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if (header1 != RGSS_HEADER_1 || header2 != RGSS_HEADER_2)
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return 0;
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RGSS_archiveData *data = new RGSS_archiveData;
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data->archiveIo = io;
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quint32 magic = RGSS_MAGIC;
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while (true)
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{
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/* Read filename length,
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* if nothing was read, no files remain */
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quint32 nameLen;
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if (!readUint32(io, nameLen))
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break;
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nameLen ^= advanceMagic(magic);
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static char nameBuf[512];
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uint i;
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for (i = 0; i < nameLen; ++i)
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{
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char c;
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io->read(io, &c, 1);
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nameBuf[i] = c ^ (advanceMagic(magic) & 0xFF);
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if (nameBuf[i] == '\\')
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nameBuf[i] = '/';
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}
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nameBuf[i] = 0;
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quint32 entrySize;
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readUint32(io, entrySize);
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entrySize ^= advanceMagic(magic);
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RGSS_entryData entry;
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entry.offset = io->tell(io);
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entry.size = entrySize;
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entry.startMagic = magic;
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data->entryHash.insert(nameBuf, entry);
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/* Test for new folder */
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for (i = nameLen; i > 0; i--)
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if (nameBuf[i] == '/')
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{
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nameBuf[i] = '\0';
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if (!data->dirHash.contains(nameBuf))
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data->dirHash.insert(nameBuf, true);
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}
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io->seek(io, entry.offset + entry.size);
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}
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return data;
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}
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static void
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RGSS_enumerateFiles(void *opaque, const char *dirname,
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PHYSFS_EnumFilesCallback cb,
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const char *origdir, void *callbackdata)
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{
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RGSS_archiveData *data = static_cast<RGSS_archiveData*>(opaque);
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QString dirn(dirname);
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char dirBuf[512];
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char baseBuf[512];
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QByteList keys = data->entryHash.keys();
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keys += data->dirHash.keys();
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Q_FOREACH (const QByteArray &filename, keys)
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{
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/* Get the filename directory part */
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strcpy(dirBuf, filename.constData());
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strcpy(baseBuf, filename.constData());
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/* Extract path and basename */
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const char *dirpath = "";
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char *basename = dirBuf;
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for (int i = filename.size(); i >= 0; i--)
|
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if (dirBuf[i] == '/')
|
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{
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dirBuf[i] = '\0';
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dirpath = dirBuf;
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basename = &dirBuf[i+1];
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break;
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}
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/* Compare to provided dirname */
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if (strcmp(dirpath, dirname) == 0)
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cb(callbackdata, origdir, basename);
|
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}
|
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}
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static PHYSFS_Io*
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RGSS_openRead(void *opaque, const char *filename)
|
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{
|
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RGSS_archiveData *data = static_cast<RGSS_archiveData*>(opaque);
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|
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if (!data->entryHash.contains(filename))
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return 0;
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|
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RGSS_entryHandle *entry = new RGSS_entryHandle(data->entryHash[filename]);
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entry->io = data->archiveIo->duplicate(data->archiveIo);
|
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|
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PHYSFS_Io *io = PHYSFS_ALLOC(PHYSFS_Io);
|
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|
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*io = RGSS_IoTemplate;
|
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io->opaque = entry;
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return io;
|
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}
|
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|
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static int
|
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RGSS_stat(void *opaque, const char *filename, PHYSFS_Stat *stat)
|
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{
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RGSS_archiveData *data = static_cast<RGSS_archiveData*>(opaque);
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bool hasFile = data->entryHash.contains(filename);
|
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bool hasDir = data->dirHash.contains(filename);
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|
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if (!hasFile && !hasDir)
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{
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PHYSFS_setErrorCode(PHYSFS_ERR_NOT_FOUND);
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return 0;
|
||||
}
|
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|
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stat->modtime =
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stat->createtime =
|
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stat->accesstime = 0;
|
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stat->readonly = 1;
|
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|
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if (hasFile)
|
||||
{
|
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RGSS_entryData &entry = data->entryHash[filename];
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|
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stat->filesize = entry.size;
|
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stat->filetype = PHYSFS_FILETYPE_REGULAR;
|
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}
|
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else
|
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{
|
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stat->filesize = 0;
|
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stat->filetype = PHYSFS_FILETYPE_DIRECTORY;
|
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}
|
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|
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return 1;
|
||||
}
|
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|
||||
static void
|
||||
RGSS_closeArchive(void *opaque)
|
||||
{
|
||||
RGSS_archiveData *data = static_cast<RGSS_archiveData*>(opaque);
|
||||
|
||||
delete data;
|
||||
}
|
||||
|
||||
static PHYSFS_Io*
|
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RGSS_noop1(void*, const char*)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int
|
||||
RGSS_noop2(void*, const char*)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const PHYSFS_Archiver RGSS_Archiver =
|
||||
{
|
||||
0,
|
||||
{
|
||||
"RGSSAD",
|
||||
"RGSS encrypted archive format",
|
||||
"Jonas Kulla <Nyocurio@gmail.com>",
|
||||
"http://k-du.de/rgss/rgss.html",
|
||||
0 /* symlinks not supported */
|
||||
},
|
||||
RGSS_openArchive,
|
||||
RGSS_enumerateFiles,
|
||||
RGSS_openRead,
|
||||
RGSS_noop1, /* openWrite */
|
||||
RGSS_noop1, /* openAppend */
|
||||
RGSS_noop2, /* remove */
|
||||
RGSS_noop2, /* mkdir */
|
||||
RGSS_stat,
|
||||
RGSS_closeArchive
|
||||
};
|
||||
|
||||
FileStream::FileStream(PHYSFS_File *file)
|
||||
{
|
||||
p = file;
|
||||
}
|
||||
|
||||
FileStream::~FileStream()
|
||||
{
|
||||
// if (p)
|
||||
// PHYSFS_close(p);
|
||||
}
|
||||
|
||||
void FileStream::operator=(const FileStream &o)
|
||||
{
|
||||
p = o.p;
|
||||
}
|
||||
|
||||
sf::Int64 FileStream::read(void *data, sf::Int64 size)
|
||||
{
|
||||
if (!p)
|
||||
return -1;
|
||||
|
||||
return PHYSFS_readBytes(p, data, size);
|
||||
}
|
||||
|
||||
sf::Int64 FileStream::seek(sf::Int64 position)
|
||||
{
|
||||
if (!p)
|
||||
return -1;
|
||||
|
||||
int success = PHYSFS_seek(p, (PHYSFS_uint64) position);
|
||||
|
||||
return success ? position : -1;
|
||||
}
|
||||
|
||||
sf::Int64 FileStream::tell()
|
||||
{
|
||||
if (!p)
|
||||
return -1;
|
||||
|
||||
return PHYSFS_tell(p);
|
||||
}
|
||||
|
||||
sf::Int64 FileStream::getSize()
|
||||
{
|
||||
if (!p)
|
||||
return -1;
|
||||
|
||||
return PHYSFS_fileLength(p);
|
||||
}
|
||||
|
||||
sf::Int64 FileStream::write(const void *data, sf::Int64 size)
|
||||
{
|
||||
if (!p)
|
||||
return -1;
|
||||
|
||||
return PHYSFS_writeBytes(p, data, size);
|
||||
}
|
||||
|
||||
void FileStream::close()
|
||||
{
|
||||
if (p)
|
||||
{
|
||||
PHYSFS_close(p);
|
||||
p = 0;
|
||||
}
|
||||
}
|
||||
|
||||
static void enumCB(void *, const char *origdir,
|
||||
const char *fname)
|
||||
{
|
||||
qDebug() << origdir << fname;
|
||||
char buf[128];
|
||||
sprintf(buf, "%s/%s", origdir, fname);
|
||||
PHYSFS_enumerateFilesCallback(buf, enumCB, 0);
|
||||
}
|
||||
|
||||
FileSystem::FileSystem(const char *argv0)
|
||||
{
|
||||
PHYSFS_init(argv0);
|
||||
PHYSFS_registerArchiver(&RGSS_Archiver);
|
||||
}
|
||||
|
||||
FileSystem::~FileSystem()
|
||||
{
|
||||
if (PHYSFS_deinit() == 0)
|
||||
qDebug() << "PhyFS failed to deinit.";
|
||||
}
|
||||
|
||||
void FileSystem::addPath(const char *path)
|
||||
{
|
||||
PHYSFS_mount(path, 0, 1);
|
||||
}
|
||||
|
||||
static const char *imgExt[] =
|
||||
{
|
||||
"jpg",
|
||||
"png"
|
||||
};
|
||||
|
||||
static const char *audExt[] =
|
||||
{
|
||||
// "mid",
|
||||
// "midi",
|
||||
"mp3",
|
||||
"ogg",
|
||||
"wav",
|
||||
"wma" // FIXME this prolly isn't even supported lol
|
||||
};
|
||||
|
||||
static const char *fonExt[] =
|
||||
{
|
||||
"ttf"
|
||||
};
|
||||
|
||||
struct FileExtensions
|
||||
{
|
||||
const char **ext;
|
||||
int count;
|
||||
} fileExtensions[] =
|
||||
{
|
||||
{ imgExt, ARRAY_SIZE(imgExt) },
|
||||
{ audExt, ARRAY_SIZE(audExt) },
|
||||
{ fonExt, ARRAY_SIZE(fonExt) }
|
||||
};
|
||||
|
||||
static const char *completeFileName(const char *filename,
|
||||
FileSystem::FileType type)
|
||||
{
|
||||
static char buff[1024];
|
||||
|
||||
if (PHYSFS_exists(filename))
|
||||
return filename;
|
||||
|
||||
if (type != FileSystem::Undefined)
|
||||
{
|
||||
FileExtensions *extTest = &fileExtensions[type];
|
||||
for (int i = 0; i < extTest->count; ++i)
|
||||
{
|
||||
snprintf(buff, sizeof(buff), "%s.%s", filename, extTest->ext[i]);
|
||||
if (PHYSFS_exists(buff))
|
||||
return buff;
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static PHYSFS_File *openReadInt(const char *filename,
|
||||
FileSystem::FileType type)
|
||||
{
|
||||
const char *foundName = completeFileName(filename, type);
|
||||
|
||||
if (!foundName)
|
||||
throw Exception(Exception::NoFileError,
|
||||
"No such file or directory - %s", filename);
|
||||
|
||||
PHYSFS_File *handle = PHYSFS_openRead(foundName);
|
||||
if (!handle)
|
||||
throw Exception(Exception::PHYSFSError, "PhysFS: %s", PHYSFS_getLastError());
|
||||
|
||||
PHYSFS_fileLength(handle);
|
||||
|
||||
return handle;
|
||||
}
|
||||
|
||||
FileStream FileSystem::openRead(const char *filename,
|
||||
FileType type)
|
||||
{
|
||||
PHYSFS_File *handle = openReadInt(filename, type);
|
||||
|
||||
return FileStream(handle);
|
||||
}
|
||||
|
||||
static inline PHYSFS_File *sdlPHYS(SDL_RWops *ops)
|
||||
{
|
||||
return static_cast<PHYSFS_File*>(ops->hidden.unknown.data1);
|
||||
}
|
||||
|
||||
static Sint64 SDL_RWopsSize(SDL_RWops *ops)
|
||||
{
|
||||
PHYSFS_File *f = sdlPHYS(ops);
|
||||
|
||||
if (!f)
|
||||
return -1;
|
||||
|
||||
return PHYSFS_fileLength(f);
|
||||
}
|
||||
|
||||
static Sint64 SDL_RWopsSeek(SDL_RWops *ops, Sint64 offset, int whence)
|
||||
{
|
||||
PHYSFS_File *f = sdlPHYS(ops);
|
||||
|
||||
if (!f)
|
||||
return -1;
|
||||
|
||||
Sint64 base;
|
||||
switch (whence)
|
||||
{
|
||||
default:
|
||||
case RW_SEEK_SET :
|
||||
base = 0;
|
||||
break;
|
||||
case RW_SEEK_CUR :
|
||||
base = PHYSFS_tell(f);
|
||||
break;
|
||||
case RW_SEEK_END :
|
||||
base = PHYSFS_fileLength(f);
|
||||
break;
|
||||
}
|
||||
|
||||
int result = PHYSFS_seek(f, base + offset);
|
||||
|
||||
return (result != 0) ? PHYSFS_tell(f) : -1;
|
||||
}
|
||||
|
||||
static size_t SDL_RWopsRead(SDL_RWops *ops, void *buffer, size_t size, size_t maxnum)
|
||||
{
|
||||
PHYSFS_File *f = sdlPHYS(ops);
|
||||
|
||||
if (!f)
|
||||
return 0;
|
||||
|
||||
PHYSFS_sint64 result = PHYSFS_readBytes(f, buffer, size*maxnum);
|
||||
|
||||
return (result != -1) ? (result / size) : 0;
|
||||
}
|
||||
|
||||
static size_t SDL_RWopsWrite(SDL_RWops *ops, const void *buffer, size_t size, size_t num)
|
||||
{
|
||||
PHYSFS_File *f = sdlPHYS(ops);
|
||||
|
||||
if (!f)
|
||||
return 0;
|
||||
|
||||
PHYSFS_sint64 result = PHYSFS_writeBytes(f, buffer, size*num);
|
||||
|
||||
return (result != -1) ? (result / size) : 0;
|
||||
}
|
||||
|
||||
static int SDL_RWopsClose(SDL_RWops *ops)
|
||||
{
|
||||
PHYSFS_File *f = sdlPHYS(ops);
|
||||
|
||||
if (!f)
|
||||
return -1;
|
||||
|
||||
int result = PHYSFS_close(f);
|
||||
|
||||
return (result != 0) ? 0 : -1;
|
||||
}
|
||||
|
||||
const Uint32 SDL_RWOPS_PHYSFS = SDL_RWOPS_UNKNOWN+10;
|
||||
|
||||
void FileSystem::openRead(SDL_RWops &ops,
|
||||
const char *filename,
|
||||
FileType type)
|
||||
{
|
||||
PHYSFS_File *handle = openReadInt(filename, type);
|
||||
|
||||
ops.size = SDL_RWopsSize;
|
||||
ops.seek = SDL_RWopsSeek;
|
||||
ops.read = SDL_RWopsRead;
|
||||
ops.write = SDL_RWopsWrite;
|
||||
ops.close = SDL_RWopsClose;
|
||||
|
||||
ops.type = SDL_RWOPS_PHYSFS;
|
||||
ops.hidden.unknown.data1 = handle;
|
||||
}
|
||||
|
||||
bool FileSystem::exists(const char *filename, FileType type)
|
||||
{
|
||||
const char *foundName = completeFileName(filename, type);
|
||||
|
||||
return (foundName != 0);
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue