quakespasm/launcher/ioapi.c

/* ioapi.h -- IO base function header for compress/uncompress .zip
   part of the MiniZip project

   Copyright (C) 1998-2010 Gilles Vollant
     http://www.winimage.com/zLibDll/minizip.html
   Modifications for Zip64 support
     Copyright (C) 2009-2010 Mathias Svensson
     http://result42.com

   This program is distributed under the terms of the same license as zlib.
   See the accompanying LICENSE file for the full text of the license.
*/

#include "ioapi.h"

#include <psp2/io/fcntl.h>
#include <stdlib.h>
#include <string.h>

voidpf call_zopen64(const zlib_filefunc64_32_def* pfilefunc, const void* filename, int mode)
{
    if (pfilefunc->zfile_func64.zopen64_file != NULL)
        return (*(pfilefunc->zfile_func64.zopen64_file))(pfilefunc->zfile_func64.opaque, filename, mode);
    return (*(pfilefunc->zopen32_file))(pfilefunc->zfile_func64.opaque, (const char*)filename, mode);
}

voidpf call_zopendisk64 OF((const zlib_filefunc64_32_def* pfilefunc, voidpf filestream, int number_disk, int mode))
{
    if (pfilefunc->zfile_func64.zopendisk64_file != NULL)
        return (*(pfilefunc->zfile_func64.zopendisk64_file))(pfilefunc->zfile_func64.opaque, filestream, number_disk, mode);
    return (*(pfilefunc->zopendisk32_file))(pfilefunc->zfile_func64.opaque, filestream, number_disk, mode);
}

long call_zseek64(const zlib_filefunc64_32_def* pfilefunc, voidpf filestream, ZPOS64_T offset, int origin)
{
    uLong offsetTruncated;
    if (pfilefunc->zfile_func64.zseek64_file != NULL)
        return (*(pfilefunc->zfile_func64.zseek64_file))(pfilefunc->zfile_func64.opaque, filestream, offset, origin);
    offsetTruncated = (uLong)offset;
    if (offsetTruncated != offset)
        return -1;
    return (*(pfilefunc->zseek32_file))(pfilefunc->zfile_func64.opaque, filestream, offsetTruncated, origin);
}

ZPOS64_T call_ztell64(const zlib_filefunc64_32_def* pfilefunc, voidpf filestream)
{
    uLong tell_uLong;
    if (pfilefunc->zfile_func64.zseek64_file != NULL)
        return (*(pfilefunc->zfile_func64.ztell64_file))(pfilefunc->zfile_func64.opaque, filestream);
    tell_uLong = (*(pfilefunc->ztell32_file))(pfilefunc->zfile_func64.opaque, filestream);
    if ((tell_uLong) == 0xffffffff)
        return (ZPOS64_T)-1;
    return tell_uLong;
}

void fill_zlib_filefunc64_32_def_from_filefunc32(zlib_filefunc64_32_def* p_filefunc64_32, const zlib_filefunc_def* p_filefunc32)
{
    p_filefunc64_32->zfile_func64.zopen64_file = NULL;
    p_filefunc64_32->zfile_func64.zopendisk64_file = NULL;
    p_filefunc64_32->zopen32_file = p_filefunc32->zopen_file;
    p_filefunc64_32->zopendisk32_file = p_filefunc32->zopendisk_file;
    p_filefunc64_32->zfile_func64.zerror_file = p_filefunc32->zerror_file;
    p_filefunc64_32->zfile_func64.zread_file = p_filefunc32->zread_file;
    p_filefunc64_32->zfile_func64.zwrite_file = p_filefunc32->zwrite_file;
    p_filefunc64_32->zfile_func64.ztell64_file = NULL;
    p_filefunc64_32->zfile_func64.zseek64_file = NULL;
    p_filefunc64_32->zfile_func64.zclose_file = p_filefunc32->zclose_file;
    p_filefunc64_32->zfile_func64.zerror_file = p_filefunc32->zerror_file;
    p_filefunc64_32->zfile_func64.opaque = p_filefunc32->opaque;
    p_filefunc64_32->zseek32_file = p_filefunc32->zseek_file;
    p_filefunc64_32->ztell32_file = p_filefunc32->ztell_file;
}

static voidpf ZCALLBACK fopen_file_func OF((voidpf opaque, const char* filename, int mode));
static uLong ZCALLBACK fread_file_func OF((voidpf opaque, voidpf stream, void* buf, uLong size));
static uLong ZCALLBACK fwrite_file_func OF((voidpf opaque, voidpf stream, const void* buf, uLong size));
static ZPOS64_T ZCALLBACK ftell64_file_func OF((voidpf opaque, voidpf stream));
static long ZCALLBACK fseek64_file_func OF((voidpf opaque, voidpf stream, ZPOS64_T offset, int origin));
static int ZCALLBACK fclose_file_func OF((voidpf opaque, voidpf stream));
static int ZCALLBACK ferror_file_func OF((voidpf opaque, voidpf stream));

typedef struct
{
    SceUID fd;
    int error;
    int filenameLength;
    void* filename;
} FILE_IOPOSIX;

static voidpf file_build_ioposix(SceUID fd, const char* filename)
{
    FILE_IOPOSIX* ioposix = NULL;
    if (fd < 0)
        return NULL;
    ioposix = (FILE_IOPOSIX*)malloc(sizeof(FILE_IOPOSIX));
    ioposix->fd = fd;
    ioposix->error = 0;
    ioposix->filenameLength = strlen(filename) + 1;
    ioposix->filename = (char*)malloc(ioposix->filenameLength * sizeof(char));
    strncpy(ioposix->filename, filename, ioposix->filenameLength);
    return (voidpf)ioposix;
}

static voidpf ZCALLBACK fopen_file_func(voidpf opaque, const char* filename, int mode)
{
    SceUID fd = -1;
    int mode_fopen = 0;
    if ((mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER) == ZLIB_FILEFUNC_MODE_READ)
        mode_fopen = SCE_O_RDONLY;
    else if (mode & ZLIB_FILEFUNC_MODE_EXISTING)
        mode_fopen = SCE_O_RDWR;
    else if (mode & ZLIB_FILEFUNC_MODE_CREATE)
        mode_fopen = SCE_O_WRONLY | SCE_O_CREAT;

    if ((filename != NULL) && (mode_fopen != 0))
    {
        fd = sceIoOpen(filename, mode_fopen, 0777);
        return file_build_ioposix(fd, filename);
    }

    return NULL;
}

static voidpf ZCALLBACK fopendisk_file_func(voidpf opaque, voidpf stream, int number_disk, int mode)
{
    FILE_IOPOSIX* ioposix = NULL;
    char* diskFilename = NULL;
    voidpf ret = NULL;
    int i = 0;

    if (stream == NULL)
        return NULL;
    ioposix = (FILE_IOPOSIX*)stream;
    diskFilename = (char*)malloc(ioposix->filenameLength * sizeof(char));
    strncpy(diskFilename, ioposix->filename, ioposix->filenameLength);
    for (i = ioposix->filenameLength - 1; i >= 0; i -= 1)
    {
        if (diskFilename[i] != '.')
            continue;
        snprintf(&diskFilename[i], ioposix->filenameLength - i, ".z%02d", number_disk + 1);
        break;
    }
    if (i >= 0)
        ret = fopen_file_func(opaque, diskFilename, mode);
    free(diskFilename);
    return ret;
}

static uLong ZCALLBACK fread_file_func(voidpf opaque, voidpf stream, void* buf, uLong size)
{
    FILE_IOPOSIX* ioposix = NULL;
    uLong ret;
    if (stream == NULL)
        return -1;
    ioposix = (FILE_IOPOSIX*)stream;
    ret = (uLong)sceIoRead(ioposix->fd, buf, (size_t)size);
    ioposix->error = (int)ret;
    return ret;
}

static uLong ZCALLBACK fwrite_file_func(voidpf opaque, voidpf stream, const void* buf, uLong size)
{
    FILE_IOPOSIX* ioposix = NULL;
    uLong ret;
    if (stream == NULL)
        return -1;
    ioposix = (FILE_IOPOSIX*)stream;
    ret = (uLong)sceIoWrite(ioposix->fd, buf, (size_t)size);
    ioposix->error = (int)ret;
    return ret;
}

static long ZCALLBACK ftell_file_func(voidpf opaque, voidpf stream)
{
    FILE_IOPOSIX* ioposix = NULL;
    long ret = -1;
    if (stream == NULL)
        return ret;
    ioposix = (FILE_IOPOSIX*)stream;
    ret = (long)sceIoLseek32(ioposix->fd, 0, SCE_SEEK_CUR);
    ioposix->error = (int)ret;
    return ret;
}

static ZPOS64_T ZCALLBACK ftell64_file_func(voidpf opaque, voidpf stream)
{
    FILE_IOPOSIX* ioposix = NULL;
    ZPOS64_T ret = -1;
    if (stream == NULL)
        return ret;
    ioposix = (FILE_IOPOSIX*)stream;
    ret = (ZPOS64_T)sceIoLseek(ioposix->fd, 0, SCE_SEEK_CUR);
    ioposix->error = (int)ret;
    return ret;
}

static long ZCALLBACK fseek_file_func(voidpf opaque, voidpf stream, uLong offset, int origin)
{
    FILE_IOPOSIX* ioposix = NULL;
    int fseek_origin = 0;
    long ret = 0;

    if (stream == NULL)
        return -1;
    ioposix = (FILE_IOPOSIX*)stream;

    switch (origin)
    {
        case ZLIB_FILEFUNC_SEEK_CUR:
            fseek_origin = SCE_SEEK_CUR;
            break;
        case ZLIB_FILEFUNC_SEEK_END:
            fseek_origin = SCE_SEEK_END;
            break;
        case ZLIB_FILEFUNC_SEEK_SET:
            fseek_origin = SCE_SEEK_SET;
            break;
        default:
            return -1;
    }
    if (sceIoLseek32(ioposix->fd, offset, fseek_origin) < 0)
        ret = -1;
    return ret;
}

static long ZCALLBACK fseek64_file_func(voidpf opaque, voidpf stream, ZPOS64_T offset, int origin)
{
    FILE_IOPOSIX* ioposix = NULL;
    int fseek_origin = 0;
    long ret = 0;

    if (stream == NULL)
        return -1;
    ioposix = (FILE_IOPOSIX*)stream;

    switch (origin)
    {
        case ZLIB_FILEFUNC_SEEK_CUR:
            fseek_origin = SCE_SEEK_CUR;
            break;
        case ZLIB_FILEFUNC_SEEK_END:
            fseek_origin = SCE_SEEK_END;
            break;
        case ZLIB_FILEFUNC_SEEK_SET:
            fseek_origin = SCE_SEEK_SET;
            break;
        default:
            return -1;
    }
    if (sceIoLseek(ioposix->fd, offset, fseek_origin) < 0)
        ret = -1;
    return ret;
}

static int ZCALLBACK fclose_file_func(voidpf opaque, voidpf stream)
{
    FILE_IOPOSIX* ioposix = NULL;
    int ret = -1;
    if (stream == NULL)
        return ret;
    ioposix = (FILE_IOPOSIX*)stream;
    if (ioposix->filename != NULL)
        free(ioposix->filename);
    ret = sceIoClose(ioposix->fd);
    ioposix->error = ret;
    free(ioposix);
    return ret;
}

static int ZCALLBACK ferror_file_func(voidpf opaque, voidpf stream)
{
    FILE_IOPOSIX* ioposix = NULL;
    int ret = -1;
    if (stream == NULL)
        return ret;
    ioposix = (FILE_IOPOSIX*)stream;
    ret = 0;
    if (ioposix->error < 0)
        ret = ioposix->error & 0xFF;
    return ret;
}

void fill_fopen_filefunc(zlib_filefunc_def* pzlib_filefunc_def)
{
    pzlib_filefunc_def->zopen_file = fopen_file_func;
    pzlib_filefunc_def->zopendisk_file = fopendisk_file_func;
    pzlib_filefunc_def->zread_file = fread_file_func;
    pzlib_filefunc_def->zwrite_file = fwrite_file_func;
    pzlib_filefunc_def->ztell_file = ftell_file_func;
    pzlib_filefunc_def->zseek_file = fseek_file_func;
    pzlib_filefunc_def->zclose_file = fclose_file_func;
    pzlib_filefunc_def->zerror_file = ferror_file_func;
    pzlib_filefunc_def->opaque = NULL;
}

void fill_fopen64_filefunc(zlib_filefunc64_def* pzlib_filefunc_def)
{
    pzlib_filefunc_def->zopen64_file = (void(*))fopen_file_func;
    pzlib_filefunc_def->zopendisk64_file = fopendisk_file_func;
    pzlib_filefunc_def->zread_file = fread_file_func;
    pzlib_filefunc_def->zwrite_file = fwrite_file_func;
    pzlib_filefunc_def->ztell64_file = ftell64_file_func;
    pzlib_filefunc_def->zseek64_file = fseek64_file_func;
    pzlib_filefunc_def->zclose_file = fclose_file_func;
    pzlib_filefunc_def->zerror_file = ferror_file_func;
    pzlib_filefunc_def->opaque = NULL;
}