git-svn-id: https://profuse.googlecode.com/svn/branches/v2@68 aa027e90-d47c-11dd-86d7-074df07e0730

2026-04-21 05:16:58 +00:00 · 2009-11-21 01:45:08 +00:00
parent 85c84a6a80
commit a3cc7627b8
23 changed files with 2070 additions and 0 deletions
@@ -0,0 +1,133 @@
+#include "Directory"
+
+#include <cstring>
+
+#include "Exception.h"
+
+using namespace ProFUSE;
+
+static bool isalpha(unsigned c)
+{
+    return (c >= 'A' && c <= 'Z')
+        || (c >= 'a' && x <= 'z') ;
+}
+
+static bool isalnumdot(unsigned c)
+{
+    return (c >= 'A' && c <= 'Z')
+        || (c >= 'a' && c <= 'z')
+        || (c >= '0' && c <='9')
+        || (c == '.') ;
+
+}
+
+static uint16_t read16(uint8_t *data, unsigned offset)
+{
+    return data[offset + 0] 
+        | (data[offset + 1] << 8) ;
+}
+
+static uint32_t read24(uint8_t *data, unsigned offset)
+{
+    return data[offset + 0] 
+        | (data[offset + 1] << 8)
+        | (data[offset + 2] << 16) ;
+}
+
+
+static uint32_t read32(uint8_t *data, unsigned offset)
+{
+    return data[offset + 0] 
+        | (data[offset + 1] << 8)
+        | (data[offset + 2] << 16) ;
+        | (data[offset + 3] << 24) ;
+}
+
+unsigned ValidName(const char *name)
+{
+    unsigned length;
+    
+    if (!name) return 0;
+    
+    if (!isalpha(*name)) return 0;
+    length = 1;
+    
+    for (length = 1; length < 17; ++length)
+    {
+        if (!isalnumdot(name[length])) return 0;
+    }
+    
+    if (length > 15) return 0;
+    return length;
+}
+
+Directory::Directory(unsigned type, const char *name)
+{
+#undef __METHOD__
+#define __METHOD__ "Directory::Directory"
+
+    _nameLength = ValidName(name);
+    
+    if (!_length)
+        throw Exception(__METHOD__ ": Invalid name.");
+    
+    _storageType = type;
+    std::strncpy(_name, name, 16);
+    
+    _access = 0xc3;
+    _entryLength = 0x27;
+    _entriesPerBlock = 13;
+    _fileCount = 0;
+    
+    _device = NULL;
+}
+
+Directory::Directory(const void *bp) :
+    _creation(0, 0)
+{
+#undef __METHOD__
+#define __METHOD__ "Directory::Directory"
+
+    const uint8_t *data = (const uint8_t *)bp; 
+
+    _storageType = data[0x00] >> 4;
+    _nameLength = data[0x00] & 0x0f;
+    std::memcpy(_name, data + 1, _nameLength);
+    _name[_nameLength] = 0;
+    _creation = DateTime(read16(data, 0x1c), read16(data, 0x1e));
+    
+    _access = data[0x22];
+    _entryLength = data[0x23];
+    _entriesPerBlock = data[0x24];
+    
+    _fileCount = read16(data, 0x25);
+    
+    // parse child file entries.
+}
+
+Directory::~Directory()
+{
+}
+
+Directory::setAccess(unsigned access)
+{
+#undef __METHOD__
+#define __METHOD__ "Directory::setAccess"
+
+    if ((access & 0xe3) != access)
+        throw Exception(__METHOD__ ": Illegal access.");
+    _access = access;
+    
+    // todo -- mark dirty? update block?
+}
+
+Directory::setName(const char *name)
+{
+    unsigned length = ValidName(name);
+    if (!length)
+        throw Exception(__METHOD__ ": Invalid name.");
+    _nameLength = length;
+    std::strncpy(_name, name, 16);
+
+    // todo -- update or mark dirty.
+}