I am doing a character comparison and can't figure out why this does not work. I've tried different options listed below and have tried the hyphen near the backspace and the hyphen on the number pad. I tried to convert it to its char byte value and that fails. I've cast the '-' into a char variable and it still fails?
What's the solution for this?
[DBG]: PS C:\> $line.GetType()
IsPublic IsSerial Name BaseType
-------- -------- ---- --------
True True String System.Object
[DBG]: PS C:\> $line[$i]
–
[DBG]: PS C:\> $line[$i] -eq "-"
False
[DBG]: PS C:\> $line[$i] -eq "-"
False
[DBG]: PS C:\> [byte[]][char[]]"-"
45
[DBG]: PS C:\> [byte[]][char[]]$line[$i]
Cannot convert value "–" to type "System.Byte". Error: "Value was either too large or too small for an unsigned byte."
At line:1 char:1
[byte[]][char[]]$line[$i]
~~~~~~~~~~~~~~~~~~~~~~~~~
CategoryInfo : InvalidArgument: (:) [], RuntimeException
FullyQualifiedErrorId : InvalidCastIConvertible
[DBG]: PS C:\> $line[$i] -eq "\-"
False
[DBG]: PS C:\> $line[$i] -eq "`-"
False
[DBG]: PS C:\> $line[$i] -eq '\-'
False
[DBG]: PS C:\> $line[$i] -eq '`-'
False
[DBG]: PS C:\> $line[$i] -like '-'
False
[DBG]: PS C:\> $line[$i] -like "-"
False
[DBG]: PS C:\> $line[$i] -match '-'
False
[DBG]: PS C:\> $line[$i] -match "-"
False
[DBG]: PS C:\> $line[$i].GetType()
IsPublic IsSerial Name BaseType
-------- -------- ---- --------
True True Char System.ValueType
[DBG]: PS C:\> $line[$i] | gm
TypeName: System.Char
Name MemberType Definition
---- ---------- ----------
CompareTo Method int CompareTo(System.Object value), int CompareTo(char value), int IComparable.CompareTo(System.Object obj), int IComparable[char].CompareTo(char other)
Equals Method bool Equals(System.Object obj), bool Equals(char obj), bool IEquatable[char].Equals(char other)
GetHashCode Method int GetHashCode()
GetType Method type GetType()
GetTypeCode Method System.TypeCode GetTypeCode(), System.TypeCode IConvertible.GetTypeCode()
ToBoolean Method bool IConvertible.ToBoolean(System.IFormatProvider provider)
ToByte Method byte IConvertible.ToByte(System.IFormatProvider provider)
ToChar Method char IConvertible.ToChar(System.IFormatProvider provider)
ToDateTime Method datetime IConvertible.ToDateTime(System.IFormatProvider provider)
ToDecimal Method decimal IConvertible.ToDecimal(System.IFormatProvider provider)
ToDouble Method double IConvertible.ToDouble(System.IFormatProvider provider)
ToInt16 Method int16 IConvertible.ToInt16(System.IFormatProvider provider)
ToInt32 Method int IConvertible.ToInt32(System.IFormatProvider provider)
ToInt64 Method long IConvertible.ToInt64(System.IFormatProvider provider)
ToSByte Method sbyte IConvertible.ToSByte(System.IFormatProvider provider)
ToSingle Method float IConvertible.ToSingle(System.IFormatProvider provider)
ToString Method string ToString(), string ToString(System.IFormatProvider provider), string IConvertible.ToString(System.IFormatProvider provider)
ToType Method System.Object IConvertible.ToType(type conversionType, System.IFormatProvider provider)
ToUInt16 Method uint16 IConvertible.ToUInt16(System.IFormatProvider provider)
ToUInt32 Method uint32 IConvertible.ToUInt32(System.IFormatProvider provider)
ToUInt64 Method uint64 IConvertible.ToUInt64(System.IFormatProvider provider)
[DBG]: PS C:\> [char]$ch = '-'
[DBG]: PS C:\> $ch.GetType()
IsPublic IsSerial Name BaseType
-------- -------- ---- --------
True True Char System.ValueType
[DBG]: PS C:\> $line[$i] -eq $ch
False
CodePudding user response：
In case this comes up in a search and is helpful to someone, try a comparison as seen below
[DBG]: PS C:\> [char] 0x2014
—
[DBG]: PS C:\> [char] 0x2013
–
[DBG]: PS C:\> $line[$i] -eq ([char] 0x2014) # em-dash
False
[DBG]: PS C:\> $line[$i] -eq ([char] 0x2013) # en-dash
True
CodePudding user response：
A new script to id unicode chars:
# idChar.ps1
param($inputChar)
if (! (test-path $psscriptroot\UnicodeData.txt)) {
wget http://www.unicode.org/Public/UNIDATA/UnicodeData.txt -outfile UnicodeData.txt }
$unicode = import-csv $psscriptroot\UnicodeData.txt -Delimiter ';' -Header code,name
$unicode | ? { $inputChar[0] -eq [int]('0x' $_.code) }
.\idChar –
code name
---- ----
2013 EN DASH
.\idChar —
code name
---- ----
2014 EM DASH
.\idChar -
code name
---- ----
002D HYPHEN-MINUS