String (gb)
This class provides UTF-8 string manipulation methods.
Tato třída je statická.
Static methods
Byte
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This is a synonymous of the Pos method.
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Chr
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Returns a character from its Unicode value. It is UTF-8 encoded.
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Code
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Returns the Unicode value of a character inside an UTF-8 string.
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Comp
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Compares two UTF-8 strings, and returns:
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InStr
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Returns the position of the first occurrence of Pattern in String.
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Index
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Returns the index of the character at position Pos in the string.
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IsValid
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Return TRUE if String is a valid UTF-8 string.
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LCase
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Returns an UTF-8 string converted to lower case.
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Left
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Returns the Length first characters of an UTF-8 string.
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Len
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Returns the length of an UTF-8 string in characters.
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Lower
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This is a synonymous for the String.LCase method.
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Mid
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Returns a substring containing the Length characters from the position Start.
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Pos
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Returns the position of the character of index Index in the string.
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RInStr
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Returns the position of the last occurrence of Pattern in String.
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Right
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Returns the Length last characters of an UTF-8 string.
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UCase
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Returns an UTF-8 string converted to upper case.
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UCaseFirst
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Return the string with its first letter converted to upper case.
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Upper
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This is a synonymous for the String.UCase method.
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Be careful because standard Gambas string routines only deal with ASCII strings.
To use a non-UTF8 string you must first convert it with
Conv$.
Example
DIM hFile AS Stream
DIM sOneNonUTF8Line AS String
DIM sUTF8Line as String
' Print a WINDOWS-1253 text file to standard output
hFile = OPEN "/home/ilias/sometextingreekWINDOWS-1253.txt" FOR INPUT
WHILE NOT Eof(hFile)
LINE INPUT #hFile, sOneNonUTF8Line
sUTF8Line = Conv$(sOneNonUTF8Line, "WINDOWS-1253", "UTF-8")
PRINT sUTF8Line
'alternatively
'LINE INPUT #hFile, sOneNonUTF8Line
'PRINT Conv$(sOneNonUTF8Line, "WINDOWS-1253", "UTF-8")
WEND
FINALLY ' Always executed, even if an error is raised
CLOSE #hFile
CATCH ' Executed only if there is an error
PRINT "Cannot print or read or convert lines from file "; "/home/ilias/sometextingreekWINDOWS-1253.txt"