mirror of
https://github.com/ksherlock/mpw.git
synced 2024-11-22 15:31:50 +00:00
359 lines
7.0 KiB
C++
359 lines
7.0 KiB
C++
#include "os_internal.h"
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#include "os.h"
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#include "toolbox.h"
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#include <stdexcept>
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#include <cerrno>
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#include <unistd.h>
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#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)
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{
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using namespace ToolBox::Errors;
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switch (xerrno)
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{
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case 0: return 0;
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case EBADF: return rfNumErr;
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case EIO: return ioErr;
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case EACCES: return permErr;
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case ENOENT: return fnfErr;
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case ENOTDIR: return dirNFErr;
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case EISDIR: return notAFileErr;
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case ENOTSUP: return extFSErr;
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case EROFS: return wPrErr;
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case EEXIST: return dupFNErr;
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case EBUSY: return fBsyErr;
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case EDQUOT: return dskFulErr;
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case ENOSPC: return dskFulErr;
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default:
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return ioErr;
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}
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}
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/*
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tech note PT515
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ProDOS -> Macintosh conversion
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ProDOS Macintosh
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Filetype Auxtype Creator Filetype
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$00 $0000 'pdos' 'BINA'
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$B0 (SRC) (any) 'pdos' 'TEXT'
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$04 (TXT) $0000 'pdos' 'TEXT'
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$FF (SYS) (any) 'pdos' 'PSYS'
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$B3 (S16) (any) 'pdos' 'PS16'
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$uv $wxyz 'pdos' 'p' $uv $wx $yz
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Programmer's Reference for System 6.0:
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ProDOS Macintosh
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File Type Auxiliary Type Creator Type File Type
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$00 $0000 “pdos” “BINA”
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$04 (TXT) $0000 “pdos” “TEXT”
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$FF (SYS) (any) “pdos” “PSYS”
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$B3 (S16) $DByz “pdos” “p” $B3 $DB $yz
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$B3 (S16) (any) “pdos” “PS16”
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$D7 $0000 “pdos” “MIDI”
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$D8 $0000 “pdos” “AIFF”
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$D8 $0001 “pdos” “AIFC”
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$E0 $0005 “dCpy” “dImg”
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$FF (SYS) (any) “pdos” “PSYS”
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$uv $wxyz “pdos” “p” $uv $wx $yz
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mpw standard:
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$uv (any) "pdos" printf("%02x ",$uv)
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*/
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uint16_t GetFinderInfo(const std::string &pathName, void *info, bool extended)
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{
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// todo -- move to separate function? used in multiple places.
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uint8_t buffer[32];
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std::memset(buffer, 0, sizeof(buffer));
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int rv;
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rv = ::getxattr(pathName.c_str(), XATTR_FINDERINFO_NAME, buffer, 32, 0, 0);
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if (rv < 0)
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{
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switch (errno)
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{
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case ENOENT:
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case EACCES:
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return errno_to_oserr(errno);
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}
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}
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// override for source files.
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// TODO -- only override if missing?
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if (IsTextFile(pathName))
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{
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std::memcpy(buffer, "TEXTMPS ", 8);
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}
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// convert pdos types...
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if (::memcmp(buffer + 4, "pdos", 4) == 0)
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{
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// mpw expects 'xx ' where
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// xx are the ascii-encode hex value of the file type.
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// the hfs fst uses 'p' ftype8 auxtype16
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if (buffer[0] == 'p')
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{
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static char Hex[] = "0123456789ABCDEF";
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uint8_t ftype = buffer[1];
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buffer[0] = Hex[ftype >> 4];
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buffer[1] = Hex[ftype & 0x0f];
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buffer[2] = ' ';
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buffer[3] = ' ';
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}
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}
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if (extended)
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std::memcpy(info, buffer, 32);
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else
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std::memcpy(info, buffer, 16);
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return 0;
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}
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unsigned tox(unsigned x)
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{
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if (x >= '0' && x <= '9') return x - '0';
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if (x >= 'a' && x <= 'f') return x - 'a' + 10;
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if (x >= 'A' && x <= 'F') return x - 'A' + 10;
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return 0;
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}
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uint16_t SetFinderInfo(const std::string &pathName, void *info, bool extended)
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{
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uint8_t buffer[32];
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std::memset(buffer, 0, sizeof(buffer));
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int rv;
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if (!extended)
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{
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rv = ::getxattr(pathName.c_str(), XATTR_FINDERINFO_NAME, buffer, 32, 0, 0);
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if (rv < 0)
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{
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switch (errno)
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{
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case ENOENT:
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case EACCES:
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return errno_to_oserr(errno);
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}
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}
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}
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if (extended)
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std::memmove(buffer, info, 16);
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else
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std::memmove(buffer, info, 32);
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// convert pdos types.
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if (::memcmp(buffer + 2, " pdos", 6) == 0)
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{
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unsigned a = buffer[0];
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unsigned b = buffer[1];
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if (isxdigit(a) && isxdigit(b))
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{
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buffer[0] = 'p';
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buffer[1] = (tox(a) << 4) | tox(b);
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buffer[2] = 0;
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buffer[3] = 0;
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}
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}
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rv = ::setxattr(pathName.c_str(), XATTR_FINDERINFO_NAME, buffer, 32, 0, 0);
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if (rv < 0) return errno_to_oserr(errno);
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return 0;
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}
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int32_t mac_seek(uint16_t refNum, uint16_t mode, int32_t offset)
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{
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off_t rv;
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switch (mode & 0x03)
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{
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case OS::fsAtMark:
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mode = SEEK_CUR;
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offset = 0;
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break;
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case OS::fsFromStart:
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mode = SEEK_SET;
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break;
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case OS::fsFromLEOF:
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mode = SEEK_END;
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break;
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case OS::fsFromMark:
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mode = SEEK_CUR;
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break;
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}
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rv = ::lseek(refNum, offset, mode);
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if (rv < 0) return errno_to_oserr(errno);
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return rv;
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}
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//std::deque<FDEntry> FDTable;
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std::deque<FDEntry> FDEntry::FDTable;
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FDEntry& FDEntry::allocate(int fd)
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{
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std::string noname;
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return allocate(fd, noname);
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}
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FDEntry& FDEntry::allocate(int fd, std::string &&filename)
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{
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if (fd < 0) throw std::out_of_range("Invalid FD");
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if (FDTable.size() <= fd)
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FDTable.resize(fd + 1);
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auto &e = FDTable[fd];
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e.refcount = 1;
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e.text = false;
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e.resource = false;
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e.filename = std::move(filename);
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return e;
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}
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FDEntry& FDEntry::allocate(int fd, const std::string &filename)
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{
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if (fd < 0) throw std::out_of_range("Invalid FD");
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if (FDTable.size() <= fd)
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FDTable.resize(fd + 1);
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auto &e = FDTable[fd];
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e.refcount = 1;
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e.text = false;
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e.resource = false;
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e.filename = filename;
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return e;
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}
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int FDEntry::close(int fd, bool force)
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{
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if (fd < 0 || fd >= FDTable.size())
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{
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errno = EBADF;
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return -1;
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}
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auto &e = FDTable[fd];
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if (!e.refcount)
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{
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errno = EBADF;
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return -1;
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}
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if (--e.refcount == 0 || force)
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{
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e.refcount = 0;
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return ::close(fd);
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}
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return 0;
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}
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ssize_t FDEntry::read(int fd, void *buffer, size_t count)
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{
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if (fd < 0 || fd >= FDTable.size())
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{
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errno = EBADF;
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return -1;
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}
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auto const &e = FDTable[fd];
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if (!e.refcount)
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{
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errno = EBADF;
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return -1;
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}
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// hmm... keep a current seek position?
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ssize_t size;
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if (e.text)
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{
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std::unique_ptr<uint8_t[]> trbuffer(new uint8_t[count]);
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size = ::read(fd, trbuffer.get(), count);
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if (size > 0)
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{
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std::transform(trbuffer.get(), trbuffer.get() + size, (uint8_t *)buffer,
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[](uint8_t c) { return c == '\n' ? '\r' : c; }
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);
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}
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}
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else
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{
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size = ::read(fd, buffer, count);
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}
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return size;
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}
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ssize_t FDEntry::write(int fd, const void *buffer, size_t count)
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{
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if (fd < 0 || fd >= FDTable.size())
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{
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errno = EBADF;
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return -1;
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}
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auto const &e = FDTable[fd];
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if (!e.refcount)
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{
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errno = EBADF;
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return -1;
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}
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// hmm... keep a current seek position?
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ssize_t size;
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if (e.text)
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{
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std::unique_ptr<uint8_t[]> trbuffer(new uint8_t[count]);
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if (count > 0)
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{
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std::transform((const uint8_t *)buffer, (const uint8_t *)buffer + count, trbuffer.get(),
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[](uint8_t c) { return c == '\r' ? '\n' : c; }
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);
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}
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size = ::write(fd, trbuffer.get(), count);
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}
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else
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{
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size = ::write(fd, buffer, count);
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}
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return size;
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}
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} }
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