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get/set finder info functions

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This commit is contained in:
Kelvin Sherlock 2013-03-26 22:18:44 -04:00
parent dd14402c2e
commit af98ca4bfd
2 changed files with 149 additions and 2 deletions
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147
toolbox/os_internal.cpp
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@ -7,6 +7,8 @@
#include <unistd.h>
#include <fcntl.h>
#include <sys/xattr.h>
namespace OS { namespace Internal {
@ -42,6 +44,151 @@ namespace OS { namespace Internal {
}
/*
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;
if (!extended)
{
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);
}
}
}
if (extended)
std::memmove(buffer, info, 16);
else
std::memmove(buffer, info, 32);
// 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;
}
int32_t mac_seek(uint16_t refNum, uint16_t mode, int32_t offset)
{
off_t rv;

4
toolbox/os_internal.h
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@ -8,8 +8,8 @@ namespace OS { namespace Internal {
uint16_t errno_to_oserr(int xerrno);
uint16_t GetFinderInfo(const std::string &pathname, void *info);
uint16_t SetFinderInfo(const std::string &pathname, void *info);
uint16_t GetFinderInfo(const std::string &pathname, void *info, bool extended);
uint16_t SetFinderInfo(const std::string &pathname, void *info, bool extended);
uint16_t GetFileType(const std::string &pathname, uint16_t *fileType, uint32_t *auxType);