Package org.xhtmlrenderer.util
Class GeneralUtil
- java.lang.Object
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- org.xhtmlrenderer.util.GeneralUtil
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public class GeneralUtil extends java.lang.Object
Description of the Class- Author:
- Patrick Wright
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Field Summary
Fields Modifier and Type Field Description static java.text.DecimalFormat
PADDED_HASH_FORMAT
Used to format an Object's hashcode into a 0-padded 10 char String, e.g.
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Constructor Summary
Constructors Constructor Description GeneralUtil()
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Method Summary
All Methods Static Methods Concrete Methods Modifier and Type Method Description static java.lang.String
classNameOnly(java.lang.Object o)
Given an Object instance, returns just the classname with no packagestatic java.lang.String
classNameOnly(java.lang.String cname)
Given a String classname, returns just the classname with no packagestatic void
dumpShortException(java.lang.Exception ex)
Dumps an exception to the console, only the last 5 lines of the stack trace.static java.lang.String
escapeHTML(java.lang.String s)
Converts any special characters into their corresponding HTML entities , for example < to <.static java.net.URL
getURLFromClasspath(java.lang.Object obj, java.lang.String resource)
static java.lang.StringBuffer
htmlEscapeSpace(java.lang.String uri)
static java.lang.String
inputStreamToString(java.io.InputStream is)
static boolean
isMacOSX()
static void
main(java.lang.String[] args)
static java.io.InputStream
openStreamFromClasspath(java.lang.Object obj, java.lang.String resource)
Description of the Methodstatic java.lang.String
paddedHashCode(java.lang.Object o)
Description of the Methodstatic int
parseIntRelaxed(java.lang.String s)
Parses an integer from a string using less restrictive rules about which characters we won't accept.static java.lang.String
trackBack(int cnt)
Returns a String tracking the last n method calls, from oldest to most recent.static void
writeStringToFile(java.lang.String content, java.lang.String encoding, java.lang.String fileName)
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Method Detail
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openStreamFromClasspath
public static java.io.InputStream openStreamFromClasspath(java.lang.Object obj, java.lang.String resource)
Description of the Method- Parameters:
obj
- PARAMresource
- PARAM- Returns:
- Returns
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getURLFromClasspath
public static java.net.URL getURLFromClasspath(java.lang.Object obj, java.lang.String resource)
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dumpShortException
public static void dumpShortException(java.lang.Exception ex)
Dumps an exception to the console, only the last 5 lines of the stack trace.- Parameters:
ex
- PARAM
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trackBack
public static java.lang.String trackBack(int cnt)
Returns a String tracking the last n method calls, from oldest to most recent. You can use this as a simple tracing mechanism to find out the calls that got to where you execute thetrackBack()
call from. Example:// called from Box.calcBorders(), line 639 String tback = GeneralUtil.trackBack(6); System.out.println(tback);
producesBoxing.layoutChildren(ln 204) BlockBoxing.layoutContent(ln 81) Boxing.layout(ln 72) Boxing.layout(ln 133) Box.totalLeftPadding(ln 306) Box.calcBorders(ln 639)
ThetrackBack()
method itself is always excluded from the dump. Note the output may not be useful if HotSpot has been optimizing the code.- Parameters:
cnt
- How far back in the call tree to go; if call tree is smaller, will be limited to call tree.- Returns:
- see desc
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classNameOnly
public static java.lang.String classNameOnly(java.lang.Object o)
Given an Object instance, returns just the classname with no package- Parameters:
o
- PARAM- Returns:
- Returns
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classNameOnly
public static java.lang.String classNameOnly(java.lang.String cname)
Given a String classname, returns just the classname with no package- Parameters:
cname
- PARAM- Returns:
- Returns
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paddedHashCode
public static java.lang.String paddedHashCode(java.lang.Object o)
Description of the Method- Parameters:
o
- PARAM- Returns:
- Returns
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isMacOSX
public static boolean isMacOSX()
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htmlEscapeSpace
public static java.lang.StringBuffer htmlEscapeSpace(java.lang.String uri)
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inputStreamToString
public static java.lang.String inputStreamToString(java.io.InputStream is) throws java.io.IOException
- Throws:
java.io.IOException
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main
public static void main(java.lang.String[] args)
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writeStringToFile
public static void writeStringToFile(java.lang.String content, java.lang.String encoding, java.lang.String fileName) throws java.io.IOException, java.io.UnsupportedEncodingException
- Throws:
java.io.IOException
java.io.UnsupportedEncodingException
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parseIntRelaxed
public static int parseIntRelaxed(java.lang.String s)
Parses an integer from a string using less restrictive rules about which characters we won't accept. This scavenges the supplied string for any numeric character, while dropping all others.- Parameters:
s
- The string to parse- Returns:
- The number represented by the passed string, or 0 if the string is null, empty, white-space only, contains only non-numeric characters, or simply evaluates to 0 after parsing (e.g. "0")
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escapeHTML
public static final java.lang.String escapeHTML(java.lang.String s)
Converts any special characters into their corresponding HTML entities , for example < to <. This is done using a character by character test, so you may consider other approaches for large documents. Make sure you declare the entities that might appear in this replacement, e.g. the latin-1 entities This method was taken from a code-samples website, written and hosted by Real Gagnon, at http://www.rgagnon.com/javadetails/java-0306.html.- Parameters:
s
- The String which may contain characters to escape.- Returns:
- The string with the characters as HTML entities.
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