/// <summary>
/// Load catalog content
/// </summary>
public void Load()
{
int pos = 0;
string s = "";
err_line = -1;
if (!File.Exists(catalog_file_name))
{
File.WriteAllBytes(catalog_file_name, VSLib.ConvertStringToByte(sg_ok + DEFS.VSTORAGE_VERSION + "$" + "U" + "$" + DEFS.DELIM_NEWLINE)); // 'U' dont encrypt (+19)
}
s = VSLib.ConvertByteToString(File.ReadAllBytes(catalog_file_name));
// Parse file
pos = s.IndexOf(DEFS.DELIM_NEWLINE);
if (pos < 0)
{
return;
}
// Get encryption status
string sth = s.Substring(0, pos);
if (sth.Length < 21)
{
err_line = 1;
}
else
{
// Encryption
ste = sth.Substring(19, 1).ToUpper();
ENCRYPT = (sth.Substring(19, 1) == "E");
pos += DEFS.DELIM_NEWLINE.Length;
line = 1;
VSConfigDescriptor desc = null;
while ((pos < s.Length) & (err_line < 0))
{
string par = "";
int ln = 0;
int new_pos = s.IndexOf(DEFS.DELIM_NEWLINE, pos);
if (new_pos < 0)
{
ln = s.Length - pos;
}
else
{
ln = new_pos - pos;
}
if (ln > 0)
{
par = s.Substring(pos, ln).Trim();
}
line++;
pos += (ln + DEFS.DELIM_NEWLINE.Length);
if (par != "")
{
if (par.Substring(0, 1) == "[")
{ // Parse new descriptor
desc = null;
string sname = "";
int eb = par.IndexOf("]", 1);
if (eb < 0)
{
err_line = line;
}
else
{
if (eb > 1)
{
sname = par.Substring(1, eb - 1);
}
if (sname != "")
{
sname = sname.Trim().ToLower();
for (int i = 0; i < dl.Count; i++)
{
if (dl[i].Name == sname)
{
desc = dl[i];
break;
}
}
if (desc == null)
{
desc = new VSConfigDescriptor(this);
desc.name = sname;
dl.Add(desc);
}
}
else
{
err_line = line;
}
}
}
else
{ // Parse parameters
string s_val = "";
long n_val = 0;
if (desc == null)
{
err_line = line;
}
else
{
par += " ";
if (parse_long(ref par, DEF_ID, out n_val))
{
if (n_val >= 0)
{
desc.id = (short)n_val;
}
}
else if (parse_long(ref par, DEF_SIZE, out n_val))
{
if (n_val >= 0)
{
desc.space_size_pg = n_val;
}
}
else if (parse_long(ref par, DEF_EXTENSION, out n_val))
{
if (n_val >= 0)
{
desc.extension_pg = n_val;
}
}
else if (parse_long(ref par, DEF_PAGESIZE, out n_val))
{
if (n_val >= 0)
{
desc.page_size_kb = n_val;
}
}
else if (parse_long(ref par, DEF_PARTITIONS, out n_val))
{
if (n_val >= 0)
{
desc.partitions = n_val;
}
}
else if (parse_string(ref par, DEF_PATH, out s_val))
{
if (s_val != DEF_ERROR)
{
desc.path = s_val;
}
}
else if (parse_string(ref par, DEF_INDEXSPACE, out s_val))
{
if (s_val != DEF_ERROR)
{
desc.indexspace = s_val;
}
}
else if (parse_string(ref par, DEF_TIMESTAMP, out s_val))
{
if (s_val != DEF_ERROR)
{
desc.creation_timestamp = s_val;
}
}
else if (parse_string(ref par, DEF_SIGNATURE, out s_val))
{
if (s_val != DEF_ERROR)
{
desc.signature = s_val;
}
}
else
{
err_line = line;
}
}
}
}
}
}
if (err_line >= 0)
{
throw new VSException(DEFS.E0016_OPEN_STORAGE_ERROR_CODE, "- invalid catalog entry at line " + err_line.ToString());
}
for (int i = 0; i < dl.Count; i++)
{
string sg = dl[i].Signature;
dl[i].CalculateSignature();
if (dl[i].Signature != sg)
{
throw new VSException(DEFS.E0016_OPEN_STORAGE_ERROR_CODE, "- missing or invalid space signature for '" + dl[i].Name);
}
}
}
/// <summary>
/// Update or create catalog descriptor
/// Size - Mb
/// Extension - Mb
/// pagesize - Kb
/// </summary>
/// <param name="desc"></param>
public VSConfigDescriptor Create(string name, long size, long extension = 0, long pagesize = 0, string path = "")
{
for (int i = 0; i < dl.Count; i++)
{
if (dl[i].Name == name.Trim().ToLower())
{
return(null);
}
}
VSConfigDescriptor d = new VSConfigDescriptor(this);
// Name
d.name = name.Trim().ToLower();
// Page size (Kb)
long p = pagesize;
if (p <= 0)
{
p = 16;
}
else if (p < 4)
{
p = 4;
}
else if (p > 64)
{
p = 64;
}
d.page_size_kb = p;
// Space size (pages)
p = size;
if (p <= 0)
{
p = 5;
}
d.space_size_pg = (p * 1048576) / d.PageSize;
// Extension (pages)
p = extension;
if (p <= 0)
{
p = 0;
}
d.extension_pg = (p * 1048576) / d.PageSize;
// Path
d.path = path.Trim();
// Timestamp
d.creation_timestamp = DateTime.Now.ToString("u");
// Calculate new id
short new_id = 1;
bool ready = false;
while (!ready)
{
ready = true;
for (int i = 0; i < dl.Count; i++)
{
if (new_id == dl[i].Id)
{
ready = false;
new_id++;
break;
}
}
}
d.id = new_id;
dl.Add(d);
return(d);
}
