public class StringUtil
extends java.lang.Object
Modifier and Type | Field and Description |
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private static char[] |
hex_table |
Constructor and Description |
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StringUtil() |
Modifier and Type | Method and Description |
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static java.lang.String |
compressQuotes(java.lang.String source,
java.lang.String quotes)
Compress 2 adjacent (single or double) quotes into a single (s or d)
quote when found in the middle of a String.
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private static java.lang.String |
doRegExpA(java.lang.String src,
java.lang.String indent)
Reg.exp substitute:
Pattern pat_a = Pattern.compile("\\A\\t*"); Matcher m_a = pat_a.matcher(src); src = m_a.replaceFirst(indent.toString()); |
private static java.lang.String |
doRegExpB(java.lang.String src)
Reg.exp substitute:
Pattern pat_b = Pattern.compile("\\n+\\Z"); Matcher m_b = pat_b.matcher(formatted); formatted = m_b.replaceFirst(""); |
private static java.lang.String |
doRegExpC(java.lang.String src,
java.lang.String indent)
Reg.exp substitute:
Pattern pat_c = Pattern.compile("\\n\\t*"); Matcher m_c = pat_c.matcher(formatted); formatted = m_c.replaceAll("\n" + indent.toString()); |
static java.lang.String |
ensureIndent(java.lang.String formatted,
int depth)
Utility for formatting which bends a multi-line string into shape for
outputting it in a context where there is depth tabs.
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static java.lang.String |
formatForPrint(java.lang.String input)
Used to print out a string for error messages,
chops is off at 60 chars for historical reasons.
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static byte[] |
fromHexString(java.lang.String s,
int offset,
int length)
Convert a hexidecimal string generated by toHexString() back
into a byte array.
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static byte[] |
getAsciiBytes(java.lang.String input)
Get 7-bit ASCII character array from input String.
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static java.lang.String |
hexDump(byte[] data)
Convert a byte array to a human-readable String for debugging purposes.
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static java.lang.String |
normalizeSQLIdentifier(java.lang.String id)
Normalize a SQL identifer, up-casing if
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(package private) static java.lang.String |
quoteString(java.lang.String source,
char quote)
Quote a string so that it can be used as an identifier or a string
literal in SQL statements.
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static java.lang.String |
quoteStringLiteral(java.lang.String string)
Quote a string so that it can be used as a string literal in an
SQL statement.
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static java.lang.String |
shortDBName(java.lang.String canonicalDBName,
char separatorChar)
Get the short database name from the canonical name.
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static java.lang.String |
slice(java.lang.String value,
int beginOffset,
int endOffset,
boolean trim)
Return a slice (substring) of the passed in value, optionally trimmed.
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static boolean |
SQLEqualsIgnoreCase(java.lang.String s1,
java.lang.String s2)
Compares two strings
Strings will be uppercased in english and compared
equivalent to s1.equalsIgnoreCase(s2)
throws NPE if s1 is null
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static java.lang.String |
SQLToUpperCase(java.lang.String s)
Convert string to uppercase
Always use the java.util.ENGLISH locale
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static java.lang.String |
toHexString(byte[] data,
int offset,
int length)
Convert a byte array to a String with a hexidecimal format.
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static java.lang.String[] |
toStringArray(java.lang.Object[] objArray)
A method that receive an array of Objects and return a
String array representation of that array.
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static java.lang.String |
trimTrailing(java.lang.String str)
Trim off trailing blanks but not leading blanks
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static java.lang.String |
truncate(java.lang.String value,
int length)
Truncate a String to the given length with no warnings
or error raised if it is bigger.
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public static final java.lang.String formatForPrint(java.lang.String input)
public static java.lang.String[] toStringArray(java.lang.Object[] objArray)
public static byte[] getAsciiBytes(java.lang.String input)
public static java.lang.String trimTrailing(java.lang.String str)
str
- public static java.lang.String truncate(java.lang.String value, int length)
value
- String to be truncatedlength
- Maximum length of stringpublic static java.lang.String slice(java.lang.String value, int beginOffset, int endOffset, boolean trim)
value
- Value to slice, must be non-null.beginOffset
- Inclusive start characterendOffset
- Inclusive end charactertrim
- To trim or not to trimpublic static java.lang.String toHexString(byte[] data, int offset, int length)
b & 0xf0
), the second character
represents the low nibble (b &xs; 0x0f
).
data[offset]
is represented by the first two characters in the returned String.data
- byte arrayoffset
- starting byte (zero based) to convert.length
- number of bytes to convert.public static byte[] fromHexString(java.lang.String s, int offset, int length)
s
- String to convertoffset
- starting character (zero based) to convert.length
- number of characters to convert.public static java.lang.String hexDump(byte[] data)
public static java.lang.String SQLToUpperCase(java.lang.String s)
s
- string to uppercasepublic static boolean SQLEqualsIgnoreCase(java.lang.String s1, java.lang.String s2)
s1
- first string to compares2
- second string to comparepublic static java.lang.String normalizeSQLIdentifier(java.lang.String id)
id
- syntacically correct SQL identifierpublic static java.lang.String compressQuotes(java.lang.String source, java.lang.String quotes)
source
- string to be compressedquotes
- string containing two single or double quotes.static java.lang.String quoteString(java.lang.String source, char quote)
source
- the string to quotequote
- the character to quote the string with (' or ")quoteStringLiteral(String)
,
IdUtil.normalToDelimited(String)
public static java.lang.String quoteStringLiteral(java.lang.String string)
string
- the string to quotepublic static java.lang.String ensureIndent(java.lang.String formatted, int depth)
Replace "^[\t]*" with "depth" number of tabs.
Replace "\n+$" with "".
Replace all "\n[\t]*" with "\n" + "depth" number of tabs.
formatted
- string to sanitizedepth
- indentation level the string is to be printed at (0,1,2..)private static java.lang.String doRegExpA(java.lang.String src, java.lang.String indent)
src
- source string in which to substitute indentindent
- indentation to lead sourceprivate static java.lang.String doRegExpB(java.lang.String src)
src
- source string in which to substituteprivate static java.lang.String doRegExpC(java.lang.String src, java.lang.String indent)
src
- source string in which to substitute indentindent
- indentation to lead sourcepublic static java.lang.String shortDBName(java.lang.String canonicalDBName, char separatorChar)
Apache Derby V10.13 Internals - Copyright © 2004,2016 The Apache Software Foundation. All Rights Reserved.