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RaduMCosma
55
Unity Studio/7zip/Common/CRC.cs
Normal file
55
Unity Studio/7zip/Common/CRC.cs
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@ -0,0 +1,55 @@
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// Common/CRC.cs
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namespace SevenZip
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{
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class CRC
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{
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public static readonly uint[] Table;
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static CRC()
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{
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Table = new uint[256];
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const uint kPoly = 0xEDB88320;
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for (uint i = 0; i < 256; i++)
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{
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uint r = i;
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for (int j = 0; j < 8; j++)
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if ((r & 1) != 0)
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r = (r >> 1) ^ kPoly;
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else
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r >>= 1;
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Table[i] = r;
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}
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}
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uint _value = 0xFFFFFFFF;
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public void Init() { _value = 0xFFFFFFFF; }
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public void UpdateByte(byte b)
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{
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_value = Table[(((byte)(_value)) ^ b)] ^ (_value >> 8);
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}
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public void Update(byte[] data, uint offset, uint size)
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{
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for (uint i = 0; i < size; i++)
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_value = Table[(((byte)(_value)) ^ data[offset + i])] ^ (_value >> 8);
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}
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public uint GetDigest() { return _value ^ 0xFFFFFFFF; }
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static uint CalculateDigest(byte[] data, uint offset, uint size)
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{
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CRC crc = new CRC();
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// crc.Init();
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crc.Update(data, offset, size);
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return crc.GetDigest();
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}
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static bool VerifyDigest(uint digest, byte[] data, uint offset, uint size)
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{
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return (CalculateDigest(data, offset, size) == digest);
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}
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}
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}
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274
Unity Studio/7zip/Common/CommandLineParser.cs
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274
Unity Studio/7zip/Common/CommandLineParser.cs
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@ -0,0 +1,274 @@
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// CommandLineParser.cs
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using System;
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using System.Collections;
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namespace SevenZip.CommandLineParser
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{
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public enum SwitchType
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{
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Simple,
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PostMinus,
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LimitedPostString,
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UnLimitedPostString,
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PostChar
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}
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public class SwitchForm
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{
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public string IDString;
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public SwitchType Type;
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public bool Multi;
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public int MinLen;
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public int MaxLen;
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public string PostCharSet;
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public SwitchForm(string idString, SwitchType type, bool multi,
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int minLen, int maxLen, string postCharSet)
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{
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IDString = idString;
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Type = type;
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Multi = multi;
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MinLen = minLen;
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MaxLen = maxLen;
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PostCharSet = postCharSet;
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}
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public SwitchForm(string idString, SwitchType type, bool multi, int minLen):
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this(idString, type, multi, minLen, 0, "")
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{
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}
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public SwitchForm(string idString, SwitchType type, bool multi):
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this(idString, type, multi, 0)
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{
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}
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}
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public class SwitchResult
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{
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public bool ThereIs;
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public bool WithMinus;
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public ArrayList PostStrings = new ArrayList();
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public int PostCharIndex;
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public SwitchResult()
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{
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ThereIs = false;
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}
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}
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public class Parser
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{
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public ArrayList NonSwitchStrings = new ArrayList();
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SwitchResult[] _switches;
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public Parser(int numSwitches)
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{
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_switches = new SwitchResult[numSwitches];
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for (int i = 0; i < numSwitches; i++)
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_switches[i] = new SwitchResult();
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}
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bool ParseString(string srcString, SwitchForm[] switchForms)
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{
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int len = srcString.Length;
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if (len == 0)
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return false;
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int pos = 0;
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if (!IsItSwitchChar(srcString[pos]))
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return false;
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while (pos < len)
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{
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if (IsItSwitchChar(srcString[pos]))
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pos++;
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const int kNoLen = -1;
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int matchedSwitchIndex = 0;
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int maxLen = kNoLen;
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for (int switchIndex = 0; switchIndex < _switches.Length; switchIndex++)
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{
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int switchLen = switchForms[switchIndex].IDString.Length;
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if (switchLen <= maxLen || pos + switchLen > len)
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continue;
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if (String.Compare(switchForms[switchIndex].IDString, 0,
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srcString, pos, switchLen, true) == 0)
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{
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matchedSwitchIndex = switchIndex;
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maxLen = switchLen;
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}
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}
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if (maxLen == kNoLen)
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throw new Exception("maxLen == kNoLen");
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SwitchResult matchedSwitch = _switches[matchedSwitchIndex];
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SwitchForm switchForm = switchForms[matchedSwitchIndex];
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if ((!switchForm.Multi) && matchedSwitch.ThereIs)
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throw new Exception("switch must be single");
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matchedSwitch.ThereIs = true;
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pos += maxLen;
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int tailSize = len - pos;
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SwitchType type = switchForm.Type;
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switch (type)
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{
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case SwitchType.PostMinus:
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{
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if (tailSize == 0)
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matchedSwitch.WithMinus = false;
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else
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{
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matchedSwitch.WithMinus = (srcString[pos] == kSwitchMinus);
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if (matchedSwitch.WithMinus)
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pos++;
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}
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break;
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}
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case SwitchType.PostChar:
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{
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if (tailSize < switchForm.MinLen)
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throw new Exception("switch is not full");
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string charSet = switchForm.PostCharSet;
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const int kEmptyCharValue = -1;
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if (tailSize == 0)
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matchedSwitch.PostCharIndex = kEmptyCharValue;
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else
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{
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int index = charSet.IndexOf(srcString[pos]);
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if (index < 0)
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matchedSwitch.PostCharIndex = kEmptyCharValue;
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else
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{
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matchedSwitch.PostCharIndex = index;
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pos++;
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}
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}
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break;
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}
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case SwitchType.LimitedPostString:
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case SwitchType.UnLimitedPostString:
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{
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int minLen = switchForm.MinLen;
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if (tailSize < minLen)
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throw new Exception("switch is not full");
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if (type == SwitchType.UnLimitedPostString)
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{
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matchedSwitch.PostStrings.Add(srcString.Substring(pos));
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return true;
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}
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String stringSwitch = srcString.Substring(pos, minLen);
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pos += minLen;
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for (int i = minLen; i < switchForm.MaxLen && pos < len; i++, pos++)
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{
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char c = srcString[pos];
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if (IsItSwitchChar(c))
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break;
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stringSwitch += c;
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}
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matchedSwitch.PostStrings.Add(stringSwitch);
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break;
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}
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}
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}
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return true;
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}
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public void ParseStrings(SwitchForm[] switchForms, string[] commandStrings)
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{
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int numCommandStrings = commandStrings.Length;
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bool stopSwitch = false;
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for (int i = 0; i < numCommandStrings; i++)
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{
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string s = commandStrings[i];
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if (stopSwitch)
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NonSwitchStrings.Add(s);
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else
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if (s == kStopSwitchParsing)
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stopSwitch = true;
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else
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if (!ParseString(s, switchForms))
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NonSwitchStrings.Add(s);
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}
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}
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public SwitchResult this[int index] { get { return _switches[index]; } }
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public static int ParseCommand(CommandForm[] commandForms, string commandString,
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out string postString)
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{
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for (int i = 0; i < commandForms.Length; i++)
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{
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string id = commandForms[i].IDString;
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if (commandForms[i].PostStringMode)
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{
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if (commandString.IndexOf(id) == 0)
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{
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postString = commandString.Substring(id.Length);
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return i;
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}
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}
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else
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if (commandString == id)
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{
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postString = "";
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return i;
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}
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}
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postString = "";
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return -1;
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}
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static bool ParseSubCharsCommand(int numForms, CommandSubCharsSet[] forms,
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string commandString, ArrayList indices)
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{
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indices.Clear();
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int numUsedChars = 0;
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for (int i = 0; i < numForms; i++)
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{
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CommandSubCharsSet charsSet = forms[i];
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int currentIndex = -1;
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int len = charsSet.Chars.Length;
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for (int j = 0; j < len; j++)
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{
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char c = charsSet.Chars[j];
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int newIndex = commandString.IndexOf(c);
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if (newIndex >= 0)
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{
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if (currentIndex >= 0)
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return false;
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if (commandString.IndexOf(c, newIndex + 1) >= 0)
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return false;
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currentIndex = j;
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numUsedChars++;
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}
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}
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if (currentIndex == -1 && !charsSet.EmptyAllowed)
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return false;
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indices.Add(currentIndex);
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}
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return (numUsedChars == commandString.Length);
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}
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const char kSwitchID1 = '-';
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const char kSwitchID2 = '/';
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const char kSwitchMinus = '-';
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const string kStopSwitchParsing = "--";
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static bool IsItSwitchChar(char c)
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{
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return (c == kSwitchID1 || c == kSwitchID2);
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}
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}
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public class CommandForm
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{
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public string IDString = "";
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public bool PostStringMode = false;
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public CommandForm(string idString, bool postStringMode)
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{
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IDString = idString;
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PostStringMode = postStringMode;
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}
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}
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class CommandSubCharsSet
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{
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public string Chars = "";
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public bool EmptyAllowed = false;
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}
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}
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72
Unity Studio/7zip/Common/InBuffer.cs
Normal file
72
Unity Studio/7zip/Common/InBuffer.cs
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@ -0,0 +1,72 @@
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// InBuffer.cs
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namespace SevenZip.Buffer
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{
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public class InBuffer
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{
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byte[] m_Buffer;
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uint m_Pos;
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uint m_Limit;
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uint m_BufferSize;
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System.IO.Stream m_Stream;
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bool m_StreamWasExhausted;
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ulong m_ProcessedSize;
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public InBuffer(uint bufferSize)
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{
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m_Buffer = new byte[bufferSize];
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m_BufferSize = bufferSize;
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}
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public void Init(System.IO.Stream stream)
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{
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m_Stream = stream;
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m_ProcessedSize = 0;
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m_Limit = 0;
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m_Pos = 0;
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m_StreamWasExhausted = false;
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}
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public bool ReadBlock()
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{
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if (m_StreamWasExhausted)
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return false;
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m_ProcessedSize += m_Pos;
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int aNumProcessedBytes = m_Stream.Read(m_Buffer, 0, (int)m_BufferSize);
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m_Pos = 0;
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m_Limit = (uint)aNumProcessedBytes;
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m_StreamWasExhausted = (aNumProcessedBytes == 0);
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return (!m_StreamWasExhausted);
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}
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public void ReleaseStream()
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{
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// m_Stream.Close();
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m_Stream = null;
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}
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public bool ReadByte(byte b) // check it
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{
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if (m_Pos >= m_Limit)
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if (!ReadBlock())
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return false;
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b = m_Buffer[m_Pos++];
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return true;
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}
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public byte ReadByte()
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{
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// return (byte)m_Stream.ReadByte();
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if (m_Pos >= m_Limit)
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if (!ReadBlock())
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return 0xFF;
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return m_Buffer[m_Pos++];
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}
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public ulong GetProcessedSize()
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{
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return m_ProcessedSize + m_Pos;
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}
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}
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}
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47
Unity Studio/7zip/Common/OutBuffer.cs
Normal file
47
Unity Studio/7zip/Common/OutBuffer.cs
Normal file
@ -0,0 +1,47 @@
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// OutBuffer.cs
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namespace SevenZip.Buffer
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{
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public class OutBuffer
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{
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byte[] m_Buffer;
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uint m_Pos;
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uint m_BufferSize;
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System.IO.Stream m_Stream;
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ulong m_ProcessedSize;
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public OutBuffer(uint bufferSize)
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{
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m_Buffer = new byte[bufferSize];
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m_BufferSize = bufferSize;
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}
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public void SetStream(System.IO.Stream stream) { m_Stream = stream; }
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public void FlushStream() { m_Stream.Flush(); }
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public void CloseStream() { m_Stream.Close(); }
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public void ReleaseStream() { m_Stream = null; }
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public void Init()
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{
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m_ProcessedSize = 0;
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m_Pos = 0;
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}
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public void WriteByte(byte b)
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{
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m_Buffer[m_Pos++] = b;
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if (m_Pos >= m_BufferSize)
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FlushData();
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}
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public void FlushData()
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{
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if (m_Pos == 0)
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return;
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m_Stream.Write(m_Buffer, 0, (int)m_Pos);
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m_Pos = 0;
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}
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public ulong GetProcessedSize() { return m_ProcessedSize + m_Pos; }
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}
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}
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Block a user