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[FileTools] Add another stream-based method and convert file-based version

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This commit is contained in:
Matt Nadareski
2016-09-17 18:15:53 -07:00
parent df3bc65cf8
commit 0a2a85c156
1 changed files with 29 additions and 8 deletions
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37
SabreTools.Helper/Tools/FileTools.cs
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@@ -595,7 +595,6 @@ namespace SabreTools.Helper
/// <param name="offset">Set a >0 number for getting hash for part of the file, 0 otherwise (default)</param>
/// <param name="date">True if the file Date should be included, false otherwise (default)</param>
/// <returns>Populated RomData object if success, empty one on error</returns>
/// <remarks>Add read-offset for hash info</remarks>
public static Rom GetSingleFileInfo(string input, bool noMD5 = false, bool noSHA1 = false, long offset = 0, bool date = false)
{
// Add safeguard if file doesn't exist
@@ -604,19 +603,42 @@ namespace SabreTools.Helper
return new Rom();
}
FileInfo temp = new FileInfo(input);
// Get the information from the file stream
Rom rom = GetSingleStreamInfo(File.OpenRead(input), noMD5, noSHA1, offset);
// Add unique data from the file
rom.Name = Path.GetFileName(input);
rom.Date = (date ? new FileInfo(input).LastWriteTime.ToString("yyyy/MM/dd HH:mm:ss") : "");
return rom;
}
/// <summary>
/// Retrieve file information for a single file
/// </summary>
/// <param name="input">Filename to get information from</param>
/// <param name="noMD5">True if MD5 hashes should not be calculated, false otherwise (default)</param>
/// <param name="noSHA1">True if SHA-1 hashes should not be calcluated, false otherwise (default)</param>
/// <param name="offset">Set a >0 number for getting hash for part of the file, 0 otherwise (default)</param>
/// <returns>Populated RomData object if success, empty one on error</returns>
public static Rom GetSingleStreamInfo(Stream input, bool noMD5 = false, bool noSHA1 = false, long offset = 0)
{
// If we have a negative offset, zero it out since we don't support it yet
if (offset < 0)
{
offset = 0;
}
Rom rom = new Rom
{
Name = Path.GetFileName(input),
Type = ItemType.Rom,
HashData = new Hash
{
Size = temp.Length,
Size = input.Length - Math.Abs(offset),
CRC = string.Empty,
MD5 = string.Empty,
SHA1 = string.Empty,
},
Date = (date ? temp.LastWriteTime.ToString("yyyy/MM/dd HH:mm:ss") : ""),
};
try
@@ -624,17 +646,16 @@ namespace SabreTools.Helper
using (OptimizedCRC crc = new OptimizedCRC())
using (MD5 md5 = MD5.Create())
using (SHA1 sha1 = SHA1.Create())
using (FileStream fs = File.OpenRead(input))
{
// Seek to the starting position, if one is set
if (offset > 0)
{
fs.Seek(offset, SeekOrigin.Begin);
input.Seek(offset, SeekOrigin.Begin);
}
byte[] buffer = new byte[1024];
int read;
while ((read = fs.Read(buffer, 0, buffer.Length)) > 0)
while ((read = input.Read(buffer, 0, buffer.Length)) > 0)
{
crc.Update(buffer, 0, read);
if (!noMD5)