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git-svn-id: https://profuse.googlecode.com/svn/trunk@4 aa027e90-d47c-11dd-86d7-074df07e0730
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ksherlock
275
File.cpp
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275
File.cpp
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/*
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* File.cpp
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* ProFUSE
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*
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* Created by Kelvin Sherlock on 12/18/08.
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*
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*/
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#include "File.h"
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#include "common.h"
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#include <strings.h>
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#include <stdint.h>
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#include <ctype.h>
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/*
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* ProDOS technote 28
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*
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* The following definition allows the same range of years that the Apple IIgs
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* Control Panel CDA currently does:
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*
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* o A seven-bit ProDOS year value is in the range 0 to 99
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* (100 through 127 are invalid)
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* o Year values from 40 to 99 represent 1940 through 1999
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* o Year values from 0 to 39 represent 2000 through 2039
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*/
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inline time_t timeToUnix(unsigned yymmdd, unsigned hhmm)
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{
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if (yymmdd == 0) return 0;
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tm t;
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bzero(&t, sizeof(tm));
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t.tm_min = hhmm & 0x3f;
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t.tm_hour = (hhmm >> 8) & 0x1f;
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t.tm_mday = yymmdd & 0x1f;
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t.tm_mon = ((yymmdd >> 5) & 0x0f) - 1;
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t.tm_year = (yymmdd) >> 9;
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if (t.tm_year <= 39) t.tm_year += 100;
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return mktime(&t);
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}
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FileEntry::FileEntry()
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{
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bzero(this, sizeof(FileEntry));
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}
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FileEntry::FileEntry(const FileEntry& f)
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{
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*this = f;
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}
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FileEntry::FileEntry(const FileEntry *f)
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{
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if (f) *this = *f;
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else bzero(this, sizeof(FileEntry));
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}
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FileEntry::FileEntry(const void *data)
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{
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const uint8_t *cp = (const uint8_t *)data;
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address = 0;
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storage_type = cp[0x00] >> 4;
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name_length = cp[0x00] & 0x0f;
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memcpy(file_name, &cp[0x01], name_length);
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file_name[name_length] = 0;
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file_type = cp[0x10];
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key_pointer = load16(&cp[0x11]);
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blocks_used = load16(&cp[0x13]);
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eof = load24(&cp[0x15]);
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creation = timeToUnix(load16(&cp[0x18]), load16(&cp[0x1a]));
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//version = cp[0x1c];
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//min_version = cp[0x1d];
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unsigned xcase = load16(&cp[0x1c]);
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if (xcase & 0x8000)
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{
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// gsos technote #8
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unsigned mask = 0x4000;
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for (unsigned i = 0; i < name_length; i++)
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{
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if (xcase & mask) file_name[i] = tolower(file_name[i]);
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mask = mask >> 1;
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}
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}
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access = cp[0x1e];
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aux_type = load16(&cp[0x1f]);
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last_mod = timeToUnix(load16(&cp[0x21]), load16(&cp[0x23]));
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header_pointer = load16(&cp[0x25]);
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}
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ExtendedEntry::ExtendedEntry()
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{
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bzero(this, sizeof(ExtendedEntry));
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}
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ExtendedEntry::ExtendedEntry(const void *data)
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{
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const uint8_t *cp = (const uint8_t *)data;
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//prodos technote #25.
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// offset 0 - mini entry for data fork
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dataFork.storage_type = cp[0x00] & 0x0f;
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dataFork.key_block = load16(&cp[0x01]);
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dataFork.blocks_used = load16(&cp[0x03]);
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dataFork.eof = load24(&cp[0x05]);
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// offset 256 - mini entry for resource fork.
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resourceFork.storage_type = cp[256 + 0x00] & 0x0f;
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resourceFork.key_block = load16(&cp[256 + 0x01]);
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resourceFork.blocks_used = load16(&cp[256 + 0x03]);
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resourceFork.eof = load24(&cp[256 + 0x05]);
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// xFInfo may be missing.
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bzero(FInfo, sizeof(FInfo));
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bzero(xFInfo, sizeof(xFInfo));
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// size must be 18.
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unsigned size;
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unsigned entry;
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for (unsigned i = 0; i < 2; i++)
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{
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unsigned ptr = i == 0 ? 8 : 26;
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size = cp[ptr];
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if (size != 18) continue;
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entry = cp[ptr + 1];
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switch(entry)
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{
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case 1:
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memcpy(FInfo, &cp[ptr + 2], 16);
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break;
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case 2:
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memcpy(xFInfo, &cp[ptr + 2], 16);
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break;
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}
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}
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//
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}
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VolumeEntry::VolumeEntry()
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{
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bzero(this, sizeof(VolumeEntry));
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}
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VolumeEntry::VolumeEntry(const void *data)
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{
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const uint8_t *cp = (const uint8_t *)data;
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//prev_block = load16(&cp[0x00]);
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//next_block = load16(&cp[0x02]);
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storage_type = cp[0x00] >> 4;
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name_length = cp[0x00] & 0x0f;
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memcpy(volume_name, &cp[0x01], name_length);
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volume_name[name_length] = 0;
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// 0x14--0x1b reserved
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//creation = timeToUnix(load16(&cp[0x18]), load16(&cp[0x1a]));
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//version = cp[0x1c];
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//min_version = cp[0x1d];
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unsigned xcase = load16(&cp[0x16]);
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if (xcase & 0x8000)
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{
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// gsos technote #8
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unsigned mask = 0x4000;
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for (unsigned i = 0; i < name_length; i++)
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{
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if (xcase & mask) volume_name[i] = tolower(volume_name[i]);
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mask = mask >> 1;
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}
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}
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access = cp[0x1e];
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entry_length = cp[0x1f];
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entries_per_block = cp[0x20];
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file_count = load16(&cp[0x21]);
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bit_map_pointer = load16(&cp[0x23]);
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total_blocks = load16(&cp[0x25]);
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}
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SubdirEntry::SubdirEntry()
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{
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bzero(this, sizeof(SubdirEntry));
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}
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SubdirEntry::SubdirEntry(const void *data)
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{
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const uint8_t *cp = (const uint8_t *)data;
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//prev_block = load16(&cp[0x00]);
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//next_block = load16(&cp[0x02]);
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storage_type = cp[0x00] >> 4;
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name_length = cp[0x00] & 0x0f;
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memcpy(subdir_name, &cp[0x01], name_length);
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subdir_name[name_length] = 0;
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// 0x14 should be $14.
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// 0x145-0x1b reserved
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creation = timeToUnix(load16(&cp[0x18]), load16(&cp[0x1a]));
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//version = cp[0x1c];
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//min_version = cp[0x1d];
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/*
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unsigned xcase = load16(&cp[0x1c]);
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if (xcase & 0x8000)
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{
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// gsos technote #8
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unsigned mask = 0x4000;
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for (unsigned i = 0; i < name_length; i++)
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{
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if (xcase & mask) subdir_name[i] = tolower(subdir_name[i]);
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mask = mask >> 1;
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}
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}
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*/
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access = cp[0x1e];
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entry_length = cp[0x1f];
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entries_per_block = cp[0x20];
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file_count = load16(&cp[0x21]);
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parent_pointer = load16(&cp[0x23]);
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parent_entry = cp[0x25];
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parent_entry_length = cp[0x26];
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}
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