/// <summary>
/// Chooses the current code page.
/// </summary>
/// <param name="newCodePage">The code page to choose.</param>
/// <returns>True if the selection is succesful, otherwise false.</returns>
public bool ChoseCodePage(int newCodePage)
{
if (newCodePage == this.codePage)
{
return(true);
}
this.codePage = newCodePage;
this.ranges = null;
if (newCodePage == 1200)
{
return(true);
}
for (int i = CodePages.Length - 1; i >= 0; i--)
{
if (CodePages[i].Id != newCodePage)
{
continue;
}
this.ranges = CodePages[i].Ranges;
this.lastRangeIndex = this.ranges.Length / 2;
this.lastRange = this.ranges[this.lastRangeIndex];
return(true);
}
return(false);
}
public bool ChoseCodePage(int codePage)
{
if (codePage == this.codePage)
{
return true;
}
this.codePage = codePage;
ranges = null;
if (codePage == 1200)
{
return true;
}
for (var i = codePages.Length - 1; i >= 0; i--)
{
if (codePages[i].cpid == codePage)
{
ranges = codePages[i].ranges;
lastRangeIndex = ranges.Length / 2;
lastRange = ranges[lastRangeIndex];
return true;
}
}
return false;
}
/// <summary>
/// Decides if an extended chracter is unsafe for the current codepage.
/// </summary>
/// <param name="ch">The character to check.</param>
/// <returns>True if the character is unsafe, otherwise false.</returns>
public bool IsUnsafeExtendedCharacter(char ch)
{
if (ranges == null)
{
return(false);
}
if (ch <= (char)lastRange.Last)
{
if (ch >= (char)lastRange.First)
{
return(lastRange.Offset != 65535 && (Bitmap[lastRange.Offset + (ushort)(ch - (char)lastRange.First)] & lastRange.Mask) == 0);
}
int num = lastRangeIndex;
while (--num >= 0)
{
if (ch >= (char)ranges[num].First)
{
if (ch > (char)ranges[num].Last)
{
break;
}
if (ch == (char)ranges[num].First)
{
return(false);
}
lastRangeIndex = num;
lastRange = ranges[num];
return(lastRange.Offset != 65535 && (Bitmap[lastRange.Offset + (ushort)(ch - (char)lastRange.First)] & lastRange.Mask) == 0);
}
}
}
else
{
int num2 = lastRangeIndex;
while (++num2 < ranges.Length)
{
if (ch <= (char)ranges[num2].Last)
{
if (ch < (char)ranges[num2].First)
{
break;
}
if (ch == (char)ranges[num2].First)
{
return(false);
}
lastRangeIndex = num2;
lastRange = ranges[num2];
return(lastRange.Offset != 65535 && (Bitmap[lastRange.Offset + (ushort)(ch - (char)lastRange.First)] & lastRange.Mask) == 0);
}
}
}
return(true);
}
public bool ChoseCodePage(int codePage)
{
if (codePage == this.codePage)
return true;
this.codePage = codePage;
ranges = null;
if (codePage == 1200)
return true;
for (var index = codePages.Length - 1; index >= 0; --index) {
if (codePages[index].cpid == codePage) {
ranges = codePages[index].ranges;
lastRangeIndex = ranges.Length/2;
lastRange = ranges[lastRangeIndex];
return true;
}
}
return false;
}
public bool IsUnsafeExtendedCharacter(char ch)
{
if (ranges == null)
return false;
if (ch <= lastRange.last) {
if (ch >= lastRange.first) {
if (lastRange.offset != ushort.MaxValue)
return (bitmap[lastRange.offset + (ch - lastRange.first)] & lastRange.mask) == 0;
return false;
}
var index = lastRangeIndex;
while (--index >= 0) {
if (ch >= ranges[index].first) {
if (ch <= ranges[index].last) {
if (ch == ranges[index].first)
return false;
lastRangeIndex = index;
lastRange = ranges[index];
if (lastRange.offset != ushort.MaxValue)
return (bitmap[lastRange.offset + (ch - lastRange.first)] & lastRange.mask) == 0;
return false;
}
break;
}
}
} else {
var index = lastRangeIndex;
while (++index < ranges.Length) {
if (ch <= ranges[index].last) {
if (ch >= ranges[index].first) {
if (ch == ranges[index].first)
return false;
lastRangeIndex = index;
lastRange = ranges[index];
if (lastRange.offset != ushort.MaxValue)
return (bitmap[lastRange.offset + (ch - lastRange.first)] & lastRange.mask) == 0;
return false;
}
break;
}
}
}
return true;
}
/// <summary>
/// Chooses the current code page.
/// </summary>
/// <param name="newCodePage">The code page to choose.</param>
/// <returns>True if the selection is succesful, otherwise false.</returns>
public bool ChoseCodePage(int newCodePage)
{
if (newCodePage == codePage)
{
return(true);
}
codePage = newCodePage;
ranges = null;
if (newCodePage == 1200)
{
return(true);
}
for (int i = CodePages.Length - 1; i >= 0; i--)
{
if (CodePages[i].Id == newCodePage)
{
ranges = CodePages[i].Ranges;
lastRangeIndex = ranges.Length / 2;
lastRange = ranges[lastRangeIndex];
return(true);
}
}
return(false);
}
/// <summary>
/// Decides if an extended chracter is unsafe for the current codepage.
/// </summary>
/// <param name="ch">The character to check.</param>
/// <returns>True if the character is unsafe, otherwise false.</returns>
public bool IsUnsafeExtendedCharacter(char ch)
{
if (this.ranges == null)
{
InternalDebug.Assert(false);
return(false);
}
if (ch <= this.lastRange.Last)
{
if (ch >= this.lastRange.First)
{
return(this.lastRange.Offset != 0xFFFFu && (Bitmap[this.lastRange.Offset + (ch - this.lastRange.First)] & this.lastRange.Mask) == 0);
}
int i = this.lastRangeIndex;
while (--i >= 0)
{
if (ch < this.ranges[i].First)
{
continue;
}
if (ch <= this.ranges[i].Last)
{
if (ch == this.ranges[i].First)
{
return(false);
}
this.lastRangeIndex = i;
this.lastRange = this.ranges[i];
return(this.lastRange.Offset != 0xFFFFu && (Bitmap[this.lastRange.Offset + (ch - this.lastRange.First)] & this.lastRange.Mask) == 0);
}
break;
}
}
else
{
int i = this.lastRangeIndex;
while (++i < this.ranges.Length)
{
if (ch > this.ranges[i].Last)
{
continue;
}
if (ch >= this.ranges[i].First)
{
if (ch == this.ranges[i].First)
{
return(false);
}
this.lastRangeIndex = i;
this.lastRange = this.ranges[i];
return(this.lastRange.Offset != 0xFFFFu && (Bitmap[this.lastRange.Offset + (ch - this.lastRange.First)] & this.lastRange.Mask) == 0);
}
break;
}
}
return(true);
}
public bool IsUnsafeExtendedCharacter(char ch)
{
if (ranges == null)
{
InternalDebug.Assert(false);
return false;
}
if (ch <= lastRange.last)
{
if (ch >= lastRange.first)
{
return lastRange.offset != 0xFFFFu && (bitmap[lastRange.offset + (ch - lastRange.first)] & lastRange.mask) == 0;
}
else
{
var i = lastRangeIndex;
while (--i >= 0)
{
if (ch >= ranges[i].first)
{
if (ch <= ranges[i].last)
{
if (ch == ranges[i].first)
{
return false;
}
lastRangeIndex = i;
lastRange = ranges[i];
return lastRange.offset != 0xFFFFu && (bitmap[lastRange.offset + (ch - lastRange.first)] & lastRange.mask) == 0;
}
break;
}
}
}
}
else
{
var i = lastRangeIndex;
while (++ i < ranges.Length)
{
if (ch <= ranges[i].last)
{
if (ch >= ranges[i].first)
{
if (ch == ranges[i].first)
{
return false;
}
lastRangeIndex = i;
lastRange = ranges[i];
return lastRange.offset != 0xFFFFu && (bitmap[lastRange.offset + (ch - lastRange.first)] & lastRange.mask) == 0;
}
break;
}
}
}
return true;
}
