mpw/toolbox/os_internal.cpp

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#include "os_internal.h"
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#include "os.h"
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#include "toolbox.h"
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#include <stdexcept>
#include <cerrno>
#include <unistd.h>
#include <fcntl.h>
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#include <sys/xattr.h>
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namespace OS { namespace Internal {
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uint16_t errno_to_oserr(int xerrno)
{
using namespace ToolBox::Errors;
switch (xerrno)
{
case 0: return 0;
case EBADF: return rfNumErr;
case EIO: return ioErr;
case EACCES: return permErr;
case ENOENT: return fnfErr;
case ENOTDIR: return dirNFErr;
case EISDIR: return notAFileErr;
case ENOTSUP: return extFSErr;
case EROFS: return wPrErr;
case EEXIST: return dupFNErr;
case EBUSY: return fBsyErr;
case EDQUOT: return dskFulErr;
case ENOSPC: return dskFulErr;
default:
return ioErr;
}
}
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/*
tech note PT515
ProDOS -> Macintosh conversion
ProDOS Macintosh
Filetype Auxtype Creator Filetype
$00 $0000 'pdos' 'BINA'
$B0 (SRC) (any) 'pdos' 'TEXT'
$04 (TXT) $0000 'pdos' 'TEXT'
$FF (SYS) (any) 'pdos' 'PSYS'
$B3 (S16) (any) 'pdos' 'PS16'
$uv $wxyz 'pdos' 'p' $uv $wx $yz
Programmer's Reference for System 6.0:
ProDOS Macintosh
File Type Auxiliary Type Creator Type File Type
$00 $0000 pdos BINA
$04 (TXT) $0000 pdos TEXT
$FF (SYS) (any) pdos PSYS
$B3 (S16) $DByz pdos p $B3 $DB $yz
$B3 (S16) (any) pdos PS16
$D7 $0000 pdos MIDI
$D8 $0000 pdos AIFF
$D8 $0001 pdos AIFC
$E0 $0005 dCpy dImg
$FF (SYS) (any) pdos PSYS
$uv $wxyz pdos p $uv $wx $yz
mpw standard:
$uv (any) "pdos" printf("%02x ",$uv)
*/
uint16_t GetFinderInfo(const std::string &pathName, void *info, bool extended)
{
// todo -- move to separate function? used in multiple places.
uint8_t buffer[32];
std::memset(buffer, 0, sizeof(buffer));
int rv;
rv = ::getxattr(pathName.c_str(), XATTR_FINDERINFO_NAME, buffer, 32, 0, 0);
if (rv < 0)
{
switch (errno)
{
case ENOENT:
case EACCES:
return errno_to_oserr(errno);
}
}
// override for source files.
// TODO -- only override if missing?
if (IsTextFile(pathName))
{
std::memcpy(buffer, "TEXTMPS ", 8);
}
// convert pdos types...
if (::memcmp(buffer + 4, "pdos", 4) == 0)
{
// mpw expects 'xx ' where
// xx are the ascii-encode hex value of the file type.
// the hfs fst uses 'p' ftype8 auxtype16
if (buffer[0] == 'p')
{
static char Hex[] = "0123456789ABCDEF";
uint8_t ftype = buffer[1];
buffer[0] = Hex[ftype >> 4];
buffer[1] = Hex[ftype & 0x0f];
buffer[2] = ' ';
buffer[3] = ' ';
}
}
if (extended)
std::memcpy(info, buffer, 32);
else
std::memcpy(info, buffer, 16);
return 0;
}
unsigned tox(unsigned x)
{
if (x >= '0' && x <= '9') return x - '0';
if (x >= 'a' && x <= 'f') return x - 'a' + 10;
if (x >= 'A' && x <= 'F') return x - 'A' + 10;
return 0;
}
uint16_t SetFinderInfo(const std::string &pathName, void *info, bool extended)
{
uint8_t buffer[32];
std::memset(buffer, 0, sizeof(buffer));
int rv;
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if (extended)
{
std::memmove(buffer, info, 32);
}
else
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{
rv = ::getxattr(pathName.c_str(), XATTR_FINDERINFO_NAME, buffer, 32, 0, 0);
if (rv < 0)
{
switch (errno)
{
case ENOENT:
case EACCES:
return errno_to_oserr(errno);
}
}
std::memmove(buffer, info, 16);
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}
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// convert pdos types.
if (::memcmp(buffer + 2, " pdos", 6) == 0)
{
unsigned a = buffer[0];
unsigned b = buffer[1];
if (isxdigit(a) && isxdigit(b))
{
buffer[0] = 'p';
buffer[1] = (tox(a) << 4) | tox(b);
buffer[2] = 0;
buffer[3] = 0;
}
}
rv = ::setxattr(pathName.c_str(), XATTR_FINDERINFO_NAME, buffer, 32, 0, 0);
if (rv < 0) return errno_to_oserr(errno);
return 0;
}
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int32_t mac_seek(uint16_t refNum, uint16_t mode, int32_t offset)
{
off_t rv;
switch (mode & 0x03)
{
case OS::fsAtMark:
mode = SEEK_CUR;
offset = 0;
break;
case OS::fsFromStart:
mode = SEEK_SET;
break;
case OS::fsFromLEOF:
mode = SEEK_END;
break;
case OS::fsFromMark:
mode = SEEK_CUR;
break;
}
rv = ::lseek(refNum, offset, mode);
if (rv < 0) return errno_to_oserr(errno);
return rv;
}
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//std::deque<FDEntry> FDTable;
std::deque<FDEntry> FDEntry::FDTable;
FDEntry& FDEntry::allocate(int fd)
{
std::string noname;
return allocate(fd, noname);
}
FDEntry& FDEntry::allocate(int fd, std::string &&filename)
{
if (fd < 0) throw std::out_of_range("Invalid FD");
if (FDTable.size() <= fd)
FDTable.resize(fd + 1);
auto &e = FDTable[fd];
e.refcount = 1;
e.text = false;
e.resource = false;
e.filename = std::move(filename);
return e;
}
FDEntry& FDEntry::allocate(int fd, const std::string &filename)
{
if (fd < 0) throw std::out_of_range("Invalid FD");
if (FDTable.size() <= fd)
FDTable.resize(fd + 1);
auto &e = FDTable[fd];
e.refcount = 1;
e.text = false;
e.resource = false;
e.filename = filename;
return e;
}
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int FDEntry::close(int fd, bool force)
{
if (fd < 0 || fd >= FDTable.size())
{
errno = EBADF;
return -1;
}
auto &e = FDTable[fd];
if (!e.refcount)
{
errno = EBADF;
return -1;
}
if (--e.refcount == 0 || force)
{
e.refcount = 0;
return ::close(fd);
}
return 0;
}
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ssize_t FDEntry::read(int fd, void *buffer, size_t count)
{
if (fd < 0 || fd >= FDTable.size())
{
errno = EBADF;
return -1;
}
auto const &e = FDTable[fd];
if (!e.refcount)
{
errno = EBADF;
return -1;
}
// hmm... keep a current seek position?
ssize_t size;
if (e.text)
{
std::unique_ptr<uint8_t[]> trbuffer(new uint8_t[count]);
size = ::read(fd, trbuffer.get(), count);
if (size > 0)
{
std::transform(trbuffer.get(), trbuffer.get() + size, (uint8_t *)buffer,
[](uint8_t c) { return c == '\n' ? '\r' : c; }
);
}
}
else
{
size = ::read(fd, buffer, count);
}
return size;
}
ssize_t FDEntry::write(int fd, const void *buffer, size_t count)
{
if (fd < 0 || fd >= FDTable.size())
{
errno = EBADF;
return -1;
}
auto const &e = FDTable[fd];
if (!e.refcount)
{
errno = EBADF;
return -1;
}
// hmm... keep a current seek position?
ssize_t size;
if (e.text)
{
std::unique_ptr<uint8_t[]> trbuffer(new uint8_t[count]);
if (count > 0)
{
std::transform((const uint8_t *)buffer, (const uint8_t *)buffer + count, trbuffer.get(),
[](uint8_t c) { return c == '\r' ? '\n' : c; }
);
}
size = ::write(fd, trbuffer.get(), count);
}
else
{
size = ::write(fd, buffer, count);
}
return size;
}
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} }