Code:
/ 4.0 / 4.0 / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / Net / System / Net / _ShellExpression.cs / 1305376 / _ShellExpression.cs
//------------------------------------------------------------------------------
//
// Copyright (c) Microsoft Corporation. All rights reserved.
//
//-----------------------------------------------------------------------------
namespace System.Net
{
using System;
internal struct ShellExpression
{
private enum ShExpTokens
{
Asterisk = -1,
Question = -2,
AugmentedDot = -3,
AugmentedAsterisk = -4,
AugmentedQuestion = -5,
Start = -6,
End = -7
}
private ShExpTokens[] pattern;
private int[] match;
// Normally would defer parsing, but we want to throw here if it's invalid.
internal ShellExpression(string pattern)
{
this.pattern = null;
this.match = null;
GlobalLog.Print("ShellServices.ShellExpression#" + ValidationHelper.HashString(this) + "::.ctor() pattern:" + ValidationHelper.ToString(pattern));
Parse(pattern);
}
/*
// Consider removing.
internal void SetPattern(string pattern)
{
GlobalLog.Print("ShellServices.ShellExpression#" + ValidationHelper.HashString(this) + "::SetPattern() pattern:" + ValidationHelper.ToString(pattern));
Parse(pattern);
}
*/
internal bool IsMatch(string target)
{
GlobalLog.Print("ShellServices.ShellExpression#" + ValidationHelper.HashString(this) + "::IsMatch() target:" + ValidationHelper.ToString(target));
int i = 0;
int j = 0;
bool reverse = false;
bool matched = false;
while (true)
{
if (!reverse)
{
if (j > target.Length)
{
break;
}
switch (pattern[i])
{
case ShExpTokens.Asterisk:
match[i++] = j = target.Length;
continue;
case ShExpTokens.Question:
if (j == target.Length)
{
reverse = true;
}
else
{
match[i++] = ++j;
}
continue;
case ShExpTokens.AugmentedDot:
if (j == target.Length)
{
match[i++] = j;
}
else if (target[j] == '.')
{
match[i++] = ++j;
}
else
{
reverse = true;
}
continue;
case ShExpTokens.AugmentedAsterisk:
if (j == target.Length || target[j] == '.')
{
reverse = true;
}
else
{
match[i++] = ++j;
}
continue;
case ShExpTokens.AugmentedQuestion:
if (j == target.Length || target[j] == '.')
{
match[i++] = j;
}
else
{
match[i++] = ++j;
}
continue;
case ShExpTokens.Start:
if (j != 0)
{
break;
}
match[i++] = 0;
continue;
case ShExpTokens.End:
if (j == target.Length)
{
matched = true;
break;
}
reverse = true;
continue;
default:
if (j < target.Length && (int) pattern[i] == (int) char.ToLowerInvariant(target[j]))
{
match[i++] = ++j;
}
else
{
reverse = true;
}
continue;
}
}
else
{
switch (pattern[--i])
{
case ShExpTokens.Asterisk:
case ShExpTokens.AugmentedQuestion:
if (match[i] != match[i - 1])
{
j = --match[i++];
reverse = false;
}
continue;
case ShExpTokens.Start:
case ShExpTokens.End:
break;
case ShExpTokens.Question:
case ShExpTokens.AugmentedDot:
case ShExpTokens.AugmentedAsterisk:
default:
continue;
}
}
break;
}
GlobalLog.Print("ShellServices.ShellExpression#" + ValidationHelper.HashString(this) + "::IsMatch() return:" + matched.ToString());
return matched;
}
private void Parse(string patString)
{
pattern = new ShExpTokens[patString.Length + 2]; // 2 for the start, end
match = null;
int i = 0;
pattern[i++] = ShExpTokens.Start;
for (int j = 0; j < patString.Length; j++)
{
switch (patString[j])
{
case '?':
pattern[i++] = ShExpTokens.Question;
break;
case '*':
pattern[i++] = ShExpTokens.Asterisk;
break;
case '^':
if (j < patString.Length - 1)
{
j++;
}
else
{
pattern = null;
if (Logging.On) Logging.PrintWarning(Logging.Web, SR.GetString(SR.net_log_shell_expression_pattern_format_warning, patString));
throw new FormatException(SR.GetString(SR.net_format_shexp, patString));
}
switch (patString[j])
{
case '.':
pattern[i++] = ShExpTokens.AugmentedDot;
break;
case '?':
pattern[i++] = ShExpTokens.AugmentedQuestion;
break;
case '*':
pattern[i++] = ShExpTokens.AugmentedAsterisk;
break;
default:
pattern = null;
if (Logging.On) Logging.PrintWarning(Logging.Web, SR.GetString(SR.net_log_shell_expression_pattern_format_warning, patString));
throw new FormatException(SR.GetString(SR.net_format_shexp, patString));
}
break;
default:
pattern[i++] = (ShExpTokens) (int) char.ToLowerInvariant(patString[j]);
break;
}
}
pattern[i++] = ShExpTokens.End;
match = new int[i];
}
}
}
// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
//------------------------------------------------------------------------------
//
// Copyright (c) Microsoft Corporation. All rights reserved.
//
//-----------------------------------------------------------------------------
namespace System.Net
{
using System;
internal struct ShellExpression
{
private enum ShExpTokens
{
Asterisk = -1,
Question = -2,
AugmentedDot = -3,
AugmentedAsterisk = -4,
AugmentedQuestion = -5,
Start = -6,
End = -7
}
private ShExpTokens[] pattern;
private int[] match;
// Normally would defer parsing, but we want to throw here if it's invalid.
internal ShellExpression(string pattern)
{
this.pattern = null;
this.match = null;
GlobalLog.Print("ShellServices.ShellExpression#" + ValidationHelper.HashString(this) + "::.ctor() pattern:" + ValidationHelper.ToString(pattern));
Parse(pattern);
}
/*
// Consider removing.
internal void SetPattern(string pattern)
{
GlobalLog.Print("ShellServices.ShellExpression#" + ValidationHelper.HashString(this) + "::SetPattern() pattern:" + ValidationHelper.ToString(pattern));
Parse(pattern);
}
*/
internal bool IsMatch(string target)
{
GlobalLog.Print("ShellServices.ShellExpression#" + ValidationHelper.HashString(this) + "::IsMatch() target:" + ValidationHelper.ToString(target));
int i = 0;
int j = 0;
bool reverse = false;
bool matched = false;
while (true)
{
if (!reverse)
{
if (j > target.Length)
{
break;
}
switch (pattern[i])
{
case ShExpTokens.Asterisk:
match[i++] = j = target.Length;
continue;
case ShExpTokens.Question:
if (j == target.Length)
{
reverse = true;
}
else
{
match[i++] = ++j;
}
continue;
case ShExpTokens.AugmentedDot:
if (j == target.Length)
{
match[i++] = j;
}
else if (target[j] == '.')
{
match[i++] = ++j;
}
else
{
reverse = true;
}
continue;
case ShExpTokens.AugmentedAsterisk:
if (j == target.Length || target[j] == '.')
{
reverse = true;
}
else
{
match[i++] = ++j;
}
continue;
case ShExpTokens.AugmentedQuestion:
if (j == target.Length || target[j] == '.')
{
match[i++] = j;
}
else
{
match[i++] = ++j;
}
continue;
case ShExpTokens.Start:
if (j != 0)
{
break;
}
match[i++] = 0;
continue;
case ShExpTokens.End:
if (j == target.Length)
{
matched = true;
break;
}
reverse = true;
continue;
default:
if (j < target.Length && (int) pattern[i] == (int) char.ToLowerInvariant(target[j]))
{
match[i++] = ++j;
}
else
{
reverse = true;
}
continue;
}
}
else
{
switch (pattern[--i])
{
case ShExpTokens.Asterisk:
case ShExpTokens.AugmentedQuestion:
if (match[i] != match[i - 1])
{
j = --match[i++];
reverse = false;
}
continue;
case ShExpTokens.Start:
case ShExpTokens.End:
break;
case ShExpTokens.Question:
case ShExpTokens.AugmentedDot:
case ShExpTokens.AugmentedAsterisk:
default:
continue;
}
}
break;
}
GlobalLog.Print("ShellServices.ShellExpression#" + ValidationHelper.HashString(this) + "::IsMatch() return:" + matched.ToString());
return matched;
}
private void Parse(string patString)
{
pattern = new ShExpTokens[patString.Length + 2]; // 2 for the start, end
match = null;
int i = 0;
pattern[i++] = ShExpTokens.Start;
for (int j = 0; j < patString.Length; j++)
{
switch (patString[j])
{
case '?':
pattern[i++] = ShExpTokens.Question;
break;
case '*':
pattern[i++] = ShExpTokens.Asterisk;
break;
case '^':
if (j < patString.Length - 1)
{
j++;
}
else
{
pattern = null;
if (Logging.On) Logging.PrintWarning(Logging.Web, SR.GetString(SR.net_log_shell_expression_pattern_format_warning, patString));
throw new FormatException(SR.GetString(SR.net_format_shexp, patString));
}
switch (patString[j])
{
case '.':
pattern[i++] = ShExpTokens.AugmentedDot;
break;
case '?':
pattern[i++] = ShExpTokens.AugmentedQuestion;
break;
case '*':
pattern[i++] = ShExpTokens.AugmentedAsterisk;
break;
default:
pattern = null;
if (Logging.On) Logging.PrintWarning(Logging.Web, SR.GetString(SR.net_log_shell_expression_pattern_format_warning, patString));
throw new FormatException(SR.GetString(SR.net_format_shexp, patString));
}
break;
default:
pattern[i++] = (ShExpTokens) (int) char.ToLowerInvariant(patString[j]);
break;
}
}
pattern[i++] = ShExpTokens.End;
match = new int[i];
}
}
}
// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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