package railo.commons.lang;
import java.io.UnsupportedEncodingException;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import railo.commons.io.SystemUtil;
import railo.runtime.exp.PageException;
import railo.runtime.op.Caster;
import railo.runtime.type.Collection;
import railo.runtime.type.util.ArrayUtil;
/**
* Util to do some additional String Operations
*/
public final class StringUtil {
/**
* do first Letter Upper case
* @param str String to operate
* @return uppercase string
*/
public static String ucFirst(String str) {
if(str==null) return null;
else if(str.length()<=1) return str.toUpperCase();
else {
return str.substring(0,1).toUpperCase()+str.substring(1);
}
}
public static String capitalize( String input, char[] delims ) {
if (isEmpty(input)) return input;
if (ArrayUtil.isEmpty(delims))
delims = new char[]{ '.', '-', '(', ')' };
StringBuilder sb = new StringBuilder( input.length() );
boolean isLastDelim = true,isLastSpace = true;
int len=input.length();
for (int i=0; i<len; i++) {
char c = input.charAt( i );
if ( Character.isWhitespace(c) ) {
if ( !isLastSpace )
sb.append( ' ' );
isLastSpace = true;
}
else {
sb.append( ( isLastSpace || isLastDelim ) ? Character.toUpperCase( c ) : c );
isLastDelim = _contains(delims, c );
isLastSpace = false;
}
}
return sb.toString();
}
private static boolean _contains(char[] chars, char c) {
for ( int i=0; i<chars.length; i++ ) {
if(chars[i]==c) return true;
}
return false;
}
/**
* do first Letter Upper case
* @param str String to operate
* @return lower case String
*/
public static String lcFirst(String str) {
if(str==null) return null;
else if(str.length()<=1) return str.toLowerCase();
else {
return str.substring(0,1).toLowerCase()+str.substring(1);
}
}
/**
* Unescapes HTML Tags
* @param html html code to escape
* @return escaped html code
*/
public static String unescapeHTML(String html) {
return HTMLEntities.unescapeHTML(html);
}
/**
* Escapes XML Tags
* @param html html code to unescape
* @return unescaped html code
*/
public static String escapeHTML(String html) {
return HTMLEntities.escapeHTML(html);
}
/**
* escapes JS sensitive characters
* @param str String to escape
* @return escapes String
*/
public static String escapeJS(String str) {
char[] arr=str.toCharArray();
StringBuilder rtn=new StringBuilder(arr.length);
for(int i=0;i<arr.length;i++) {
switch(arr[i]) {
case '\\': rtn.append("\\\\"); break;
case '\n': rtn.append("\\n"); break;
case '\r': rtn.append("\\r"); break;
case '\f': rtn.append("\\f"); break;
case '\b': rtn.append("\\b"); break;
case '\t': rtn.append("\\t"); break;
case '"' : rtn.append("\\\""); break;
case '\'': rtn.append("\\\'"); break;
default : rtn.append(arr[i]); break;
}
}
return rtn.toString();
}
/**
* reapeats a string
* @param str string to repeat
* @param count how many time string will be reapeted
* @return reapted string
*/
public static String repeatString(String str,int count) {
if(count<=0) return "";
char[] chars = str.toCharArray();
char[] rtn=new char[chars.length*count];
int pos=0;
for(int i=0;i<count;i++) {
for(int y=0;y<chars.length;y++)rtn[pos++]=chars[y];
//rtn.append(str);
}
return new String(rtn);
}
/**
* translate, like method toString, a object to a string, but when value is null value will be translated to a empty String ("").
* @param o Object to convert
* @return converted String
*/
public static String toStringEmptyIfNull(Object o) {
if(o==null)return "";
return o.toString();
}
public static String emptyIfNull(String str) {
if(str==null)return "";
return str;
}
public static String emptyIfNull(Collection.Key key) {
if(key==null)return "";
return key.getString();
}
/**
* escape all special characters of the regular expresson language
* @param str String to escape
* @return escaped String
*/
public static String reqExpEscape(String str) {
char[] arr = str.toCharArray();
StringBuilder sb=new StringBuilder(str.length()*2);
for(int i=0;i<arr.length;i++) {
sb.append('\\');
sb.append(arr[i]);
}
return sb.toString();
}
/**
* translate a string to a valid identity variable name
* @param varName variable name template to translate
* @return translated variable name
*/
public static String toIdentityVariableName(String varName) {
char[] chars=varName.toCharArray();
long changes=0;
StringBuilder rtn=new StringBuilder(chars.length+2);
rtn.append("CF");
for(int i=0;i<chars.length;i++) {
char c=chars[i];
if((c>='a' && c<='z') ||(c>='A' && c<='Z') ||(c>='0' && c<='9'))
rtn.append(c);
else {
rtn.append('_');
changes+=(c*(i+1));
}
}
return rtn.append(changes).toString();
}
/**
* translate a string to a valid classname string
* @param str string to translate
* @return translated String
*/
public static String toClassName(String str) {
StringBuilder rtn=new StringBuilder();
String[] arr=str.split("[\\\\|//]");
for(int i=0;i<arr.length;i++) {
if(arr[i].length()==0)continue;
if(rtn.length()!=0)rtn.append('.');
char[] chars=arr[i].toCharArray();
long changes=0;
for(int y=0;y<chars.length;y++) {
char c=chars[y];
if(y==0 && (c>='0' && c<='9'))rtn.append("_"+c);
else if((c>='a' && c<='z') ||(c>='A' && c<='Z') ||(c>='0' && c<='9'))
rtn.append(c);
else {
rtn.append('_');
changes+=(c*(i+1));
}
}
if(changes>0)rtn.append(changes);
}
return rtn.toString();
}
/**
* translate a string to a valid variable string
* @param str string to translate
* @return translated String
*/
public static String toVariableName(String str) {
return toVariableName(str, true);
}
public static String toVariableName(String str, boolean addIdentityNumber) {
StringBuilder rtn=new StringBuilder();
char[] chars=str.toCharArray();
long changes=0;
boolean doCorrect=true;
for(int i=0;i<chars.length;i++) {
char c=chars[i];
if(i==0 && (c>='0' && c<='9'))rtn.append("_"+c);
else if((c>='a' && c<='z') ||(c>='A' && c<='Z') ||(c>='0' && c<='9') || c=='_' || c=='$')
rtn.append(c);
else {
doCorrect=false;
rtn.append('_');
changes+=(c*(i+1));
}
}
if(addIdentityNumber && changes>0)rtn.append(changes);
//print.ln(" - "+rtn);
if(doCorrect)return correctReservedWord(rtn.toString());
return rtn.toString();
}
/**
* if given string is a keyword it will be replaced with none keyword
* @param str
* @return corrected word
*/
private static String correctReservedWord(String str) {
char first=str.charAt(0);
switch(first) {
case 'a':
if(str.equals("abstract")) return "_"+str;
break;
case 'b':
if(str.equals("boolean")) return "_"+str;
else if(str.equals("break")) return "_"+str;
else if(str.equals("byte")) return "_"+str;
break;
case 'c':
if(str.equals("case")) return "_"+str;
else if(str.equals("catch")) return "_"+str;
else if(str.equals("char")) return "_"+str;
else if(str.equals("const")) return "_"+str;
else if(str.equals("class")) return "_"+str;
else if(str.equals("continue")) return "_"+str;
break;
case 'd':
if(str.equals("default")) return "_"+str;
else if(str.equals("do")) return "_"+str;
else if(str.equals("double")) return "_"+str;
break;
case 'e':
if(str.equals("else")) return "_"+str;
else if(str.equals("extends")) return "_"+str;
else if(str.equals("enum")) return "_"+str;
break;
case 'f':
if(str.equals("false")) return "_"+str;
else if(str.equals("final")) return "_"+str;
else if(str.equals("finally")) return "_"+str;
else if(str.equals("float")) return "_"+str;
else if(str.equals("for")) return "_"+str;
break;
case 'g':
if(str.equals("goto")) return "_"+str;
break;
case 'i':
if(str.equals("if")) return "_"+str;
else if(str.equals("implements")) return "_"+str;
else if(str.equals("import")) return "_"+str;
else if(str.equals("instanceof")) return "_"+str;
else if(str.equals("int")) return "_"+str;
else if(str.equals("interface")) return "_"+str;
break;
case 'n':
if(str.equals("native")) return "_"+str;
else if(str.equals("new")) return "_"+str;
else if(str.equals("null")) return "_"+str;
break;
case 'p':
if(str.equals("package")) return "_"+str;
else if(str.equals("private")) return "_"+str;
else if(str.equals("protected")) return "_"+str;
else if(str.equals("public")) return "_"+str;
break;
case 'r':
if(str.equals("return")) return "_"+str;
break;
case 's':
if(str.equals("short")) return "_"+str;
else if(str.equals("static")) return "_"+str;
else if(str.equals("strictfp")) return "_"+str;
else if(str.equals("super")) return "_"+str;
else if(str.equals("switch")) return "_"+str;
else if(str.equals("synchronized")) return "_"+str;
break;
case 't':
if(str.equals("this")) return "_"+str;
else if(str.equals("throw")) return "_"+str;
else if(str.equals("throws")) return "_"+str;
else if(str.equals("transient")) return "_"+str;
else if(str.equals("true")) return "_"+str;
else if(str.equals("try")) return "_"+str;
break;
case 'v':
if(str.equals("void")) return "_"+str;
else if(str.equals("volatile")) return "_"+str;
break;
case 'w':
if(str.equals("while")) return "_"+str;
break;
}
return str;
}
/**
* This function returns a string with whitespace stripped from the beginning of str
* @param str String to clean
* @return cleaned String
*/
public static String ltrim(String str,String defaultValue) {
if(str==null) return defaultValue;
int len = str.length();
int st = 0;
while ((st < len) && (str.charAt(st) <= ' ')) {
st++;
}
return ((st > 0)) ? str.substring(st) : str;
}
/**
* This function returns a string with whitespace stripped from the end of str
* @param str String to clean
* @return cleaned String
*/
public static String rtrim(String str,String defaultValue) {
if(str==null) return defaultValue;
int len = str.length();
while ((0 < len) && (str.charAt(len-1) <= ' ')) {
len--;
}
return (len < str.length()) ? str.substring(0, len) : str;
}
/**
* return if in a string are line feeds or not
* @param str string to check
* @return translated string
*/
public static boolean hasLineFeed(String str) {
int len=str.length();
char c;
for(int i=0;i<len;i++) {
c=str.charAt(i);
if(c=='\n' || c=='\r') return true;
}
return false;
}
/**
* remove all white spaces followd by whitespaces
* @param str strring to translate
* @return translated string
*/
public static String suppressWhiteSpace(String str) {
int len=str.length();
StringBuilder sb=new StringBuilder(len);
//boolean wasWS=false;
char c;
char buffer=0;
for(int i=0;i<len;i++) {
c=str.charAt(i);
if(c=='\n' || c=='\r') buffer='\n';
else if(c==' ' || c=='\t') {
if(buffer==0)buffer=c;
}
else {
if(buffer!=0){
sb.append(buffer);
buffer=0;
}
sb.append(c);
}
//sb.append(c);
}
if(buffer!=0)sb.append(buffer);
return sb.toString();
}
/**
* returns string, if given string is null or lengt 0 return default value
* @param value
* @param defaultValue
* @return value or default value
*/
public static String toString(String value, String defaultValue) {
return value==null || value.length()==0?defaultValue:value;
}
/**
* returns string, if given string is null or lengt 0 return default value
* @param value
* @param defaultValue
* @return value or default value
*/
public static String toString(Object value, String defaultValue) {
if(value==null) return defaultValue;
return toString(value.toString(), defaultValue);
}
/**
* cut string to max size if the string is greater, otherweise to nothing
* @param content
* @param max
* @return cutted string
*/
public static String max(String content,int max) {
return max(content, max,"");
}
public static String max(String content,int max, String dotDotDot) {
if(content==null) return null;
if(content.length()<=max) return content;
return content.substring(0,max)+dotDotDot;
}
/**
* performs a replace operation on a string
*
* @param input - the string input to work on
* @param find - the substring to find
* @param repl - the substring to replace the matches with
* @param firstOnly - if true then only the first occurrence of {@code find} will be replaced
* @param ignoreCase - if true then matches will not be case sensitive
* @return
*/
public static String replace( String input, String find, String repl, boolean firstOnly, boolean ignoreCase ) {
int findLen = find.length();
if ( findLen == 0 )
return input;
String scan = input;
if ( ignoreCase ) {
scan = scan.toLowerCase();
find = find.toLowerCase();
} else if ( findLen == repl.length() ) {
if ( find.equals( repl ) )
return input;
if ( !firstOnly && findLen == 1 )
return input.replace( find.charAt(0), repl.charAt(0) );
}
StringBuilder sb = new StringBuilder( repl.length() > find.length() ? (int)Math.ceil( input.length() * 1.2 ) : input.length() );
int start = 0;
int pos;
while ( (pos = scan.indexOf( find, start ) ) != -1 ) {
sb.append( input.substring( start, pos ) );
sb.append( repl );
start = pos + findLen;
if ( firstOnly )
break;
}
if ( input.length() > start )
sb.append( input.substring( start ) );
return sb.toString();
}
/**
* maintains the legacy signature of this method where matches are CaSe sensitive (sets the default of ignoreCase to false).
*
* @param input - the string input to work on
* @param find - the substring to find
* @param repl - the substring to replace the matches with
* @param firstOnly - if true then only the first occurrence of {@code find} will be replaced
* @return - calls replace( input, find, repl, firstOnly, false )
*/
public static String replace( String input, String find, String repl, boolean firstOnly ) {
return replace( input, find, repl, firstOnly, false );
}
/**
* performs a CaSe sensitive replace all
*
* @param input - the string input to work on
* @param find - the substring to find
* @param repl - the substring to replace the matches with
* @return - calls replace( input, find, repl, false, false )
*/
public static String replace( String input, String find, String repl ) {
return replace( input, find, repl, false, false );
}
/**
* adds zeros add the begin of a int example: addZeros(2,3) return "002"
* @param i number to add nulls
* @param size
* @return min len of return value;
*/
public static String addZeros(int i, int size) {
String rtn=Caster.toString(i);
if(rtn.length()<size) return repeatString("0",size-rtn.length())+rtn;
return rtn;
}
/**
* adds zeros add the begin of a int example: addZeros(2,3) return "002"
* @param i number to add nulls
* @param size
* @return min len of return value;
*/
public static String addZeros(long i, int size) {
String rtn=Caster.toString(i);
if(rtn.length()<size) return repeatString("0",size-rtn.length())+rtn;
return rtn;
}
public static int indexOf(String haystack, String needle) {
if(haystack==null) return -1;
return haystack.indexOf(needle);
}
public static int indexOfIgnoreCase(String haystack, String needle) {
if(StringUtil.isEmpty(haystack) || StringUtil.isEmpty(needle)) return -1;
needle=needle.toLowerCase();
int lenHaystack=haystack.length();
int lenNeedle=needle.length();
char lastNeedle=needle.charAt(lenNeedle-1);
char c;
outer:for(int i=lenNeedle-1;i<lenHaystack;i++) {
c=Character.toLowerCase(haystack.charAt(i));
if(c==lastNeedle) {
for(int y=0;y<lenNeedle-1;y++) {
if(needle.charAt(y)!=Character.toLowerCase(haystack.charAt(i-(lenNeedle-1)+y)))
continue outer;
}
return i-(lenNeedle-1);
}
}
return -1;
}
/**
* Tests if this string starts with the specified prefix.
* @param str string to check first char
* @param prefix the prefix.
* @return is first of given type
*/
public static boolean startsWith(String str, char prefix) {
return str!=null && str.length()>0 && str.charAt(0)==prefix;
}
/**
* Tests if this string ends with the specified suffix.
* @param str string to check first char
* @param suffix the suffix.
* @return is last of given type
*/
public static boolean endsWith(String str, char suffix) {
return str!=null && str.length()>0 && str.charAt(str.length()-1)==suffix;
}
/**
* Tests if this string ends with the specified suffix.
* @param str string to check first char
* @param suffix the suffix.
* @return is last of given type
*/
/**
* Helper functions to query a strings start portion. The comparison is case insensitive.
*
* @param base the base string.
* @param start the starting text.
*
* @return true, if the string starts with the given starting text.
*/
public static boolean startsWithIgnoreCase(final String base, final String start) {
if (base.length() < start.length()) {
return false;
}
return base.regionMatches(true, 0, start, 0, start.length());
}
/**
* Helper functions to query a strings end portion. The comparison is case insensitive.
*
* @param base the base string.
* @param end the ending text.
*
* @return true, if the string ends with the given ending text.
*/
public static boolean endsWithIgnoreCase(final String base, final String end) {
if (base.length() < end.length()) {
return false;
}
return base.regionMatches(true, base.length() - end.length(), end, 0, end.length());
}
/**
* returns if byte arr is a BOM character Stream (UTF-8,UTF-16)
* @param barr
* @return is BOM or not
*/
public static boolean isBOM(byte[] barr) {
return barr.length>=3 && barr[0]==0xEF && barr[1]==0xBB && barr[2]==0xBF;
}
/**
* return "" if value is null otherwise return same string
* @param str
* @return string (not null)
*/
public static String valueOf(String str) {
if(str==null)return "";
return str;
}
/**
* cast a string a lower case String, is faster than the String.toLowerCase, if all Character are already Low Case
* @param str
* @return lower case value
*/
public static String toLowerCase(String str) {
int len=str.length();
char c;
for(int i=0;i<len;i++) {
c=str.charAt(i);
if(!((c>='a' && c<='z') || (c>='0' && c<='9'))) {
return str.toLowerCase();
}
}
return str;
}
public static String toUpperCase(String str) {
int len=str.length();
char c;
for(int i=0;i<len;i++) {
c=str.charAt(i);
if(!((c>='A' && c<='Z') || (c>='0' && c<='9'))) {
return str.toUpperCase();
}
}
return str;
}
/**
* soundex function
* @param str
* @return soundex from given string
*/
public static String soundex(String str) {
return new org.apache.commons.codec.language.Soundex().soundex(str);
}
/**
* return the last character of a string, if string ist empty return 0;
* @param str string to get last character
* @return last character
*/
public static char lastChar(String str) {
if(str==null || str.length()==0) return 0;
return str.charAt(str.length()-1);
}
/**
*
* @param str
* @return return if a String is "Empty", that means NULL or String with length 0 (whitespaces will not counted)
*/
public static boolean isEmpty(String str) {
return str==null || str.length()==0;
}
/**
*
* @param str
* @return return if a String is "Empty", that means NULL or String with length 0 (whitespaces will not counted)
*/
public static boolean isEmpty(String str, boolean trim) {
if(!trim) return isEmpty(str);
return str==null || str.trim().length()==0;
}
/**
* return the first character of a string, if string ist empty return 0;
* @param str string to get first character
* @return first character
*/
public static char firstChar(String str) {
if(isEmpty(str)) return 0;
return str.charAt(0);
}
/**
* change charset of string from system default to givenstr
* @param str
* @param charset
* @return
* @throws UnsupportedEncodingException
*/
public static String changeCharset(String str, String charset) throws UnsupportedEncodingException {
if(str==null) return str;
return new String(str.getBytes(charset),charset);
}
/**
* change charset of string from system default to givenstr
* @param str
* @param charset
* @return
* @throws UnsupportedEncodingException
*/
public static String changeCharset(String str, String charset, String defaultValue) {
if(str==null) return str;
try {
return new String(str.getBytes(SystemUtil.getCharset()),charset);
} catch (UnsupportedEncodingException e) {
return defaultValue;
}
}
public static boolean isWhiteSpace(char c) {
return c<=' ';
}
public static String removeWhiteSpace(String str) {
if(isEmpty(str)) return str;
StringBuilder sb=new StringBuilder();
char[] carr = str.trim().toCharArray();
for(int i=0;i<carr.length;i++) {
if(!isWhiteSpace(carr[i]))sb.append(carr[i]);
}
return sb.toString();
}
public static String replaceLast(String str, char from, char to) {
int index = str.lastIndexOf(from);
if(index==-1)return str;
return str.substring(0,index)+to+str.substring(index+1);
}
public static String replaceLast(String str, String from, String to) {
int index = str.lastIndexOf(from);
if(index==-1)return str;
return str.substring(0,index)+to+str.substring(index+from.length());
}
/**
* removes quotes(",') that wraps the string
* @param string
* @return
*/
public static String removeQuotes(String string,boolean trim) {
if(trim)string=string.trim();
if((StringUtil.startsWith(string, '"') && StringUtil.endsWith(string, '"')) || (StringUtil.startsWith(string, '\'') && StringUtil.endsWith(string, '\''))){
string= string.substring(1,string.length()-1);
if(trim)string=string.trim();
}
return string;
}
public static boolean isEmpty(Object obj, boolean trim) {
if(obj==null) return true;
if(obj instanceof String)return isEmpty((String)obj,trim);
if(obj instanceof StringBuffer)return isEmpty((StringBuffer)obj,trim);
if(obj instanceof StringBuilder)return isEmpty((StringBuilder)obj,trim);
if(obj instanceof Collection.Key)return isEmpty(((Collection.Key)obj).getString(),trim);
return false;
}
public static boolean isEmpty(Object obj) {
if(obj==null) return true;
if(obj instanceof String)return isEmpty((String)obj);
if(obj instanceof Collection.Key)return isEmpty(((Collection.Key)obj).getString());
if(obj instanceof StringBuffer)return isEmpty((StringBuffer)obj);
if(obj instanceof StringBuilder)return isEmpty((StringBuilder)obj);
return false;
}
public static boolean isEmpty(StringBuffer sb,boolean trim) {
if(trim) return sb==null || sb.toString().trim().length()==0;
return sb==null || sb.length()==0;
}
public static boolean isEmpty(StringBuilder sb,boolean trim) {
if(trim) return sb==null || sb.toString().trim().length()==0;
return sb==null || sb.length()==0;
}
public static boolean isEmpty(StringBuffer sb) {
return sb==null || sb.length()==0;
}
public static boolean isEmpty(StringBuilder sb) {
return sb==null || sb.length()==0;
}
public static String removeStarting(String str, String sub) {
if(isEmpty(str) || isEmpty(sub) || !str.startsWith(sub)) return str;
return str.substring(sub.length());
}
public static String removeStartingIgnoreCase(String str, String sub) {
if(isEmpty(sub) || !startsWithIgnoreCase(str, sub)) return str;
return str.substring(sub.length());
}
public static String[] merge(String str, String[] arr) {
String[] narr=new String[arr.length+1];
narr[0]=str;
for(int i=0;i<arr.length;i++) {
narr[i+1]=arr[i];
}
return narr;
}
public static int length(String str) {
if(str==null) return 0;
return str.length();
}
public static boolean hasUpperCase(String str) {
if(isEmpty(str)) return false;
return !str.equals(str.toLowerCase());
}
/**
* trim given value, return defaultvalue when input is null
* @param str
* @param defaultValue
* @return trimmed string or defaultValue
*/
public static String trim(String str,String defaultValue) {
if(str==null) return defaultValue;
return str.trim();
}
public static boolean contains(String str, String substr) {
if(str==null) return false;
return str.indexOf(substr)!=-1;
}
public static boolean containsIgnoreCase(String str, String substr) {
return indexOfIgnoreCase(str,substr)!=-1;
}
public static String substringEL(String str, int index,String defaultValue) {
if(str==null || index<0 || index>str.length()) return defaultValue;
return str.substring(index);
}
/**
* translate a string in camel notation to a string in hypen notation
* example:
* helloWorld -> hello-world
* @param str
* @return
*/
public static String camelToHypenNotation(String str) {
if(isEmpty(str)) return str;
StringBuilder sb=new StringBuilder();
//int len=str.length();
char c;
sb.append(Character.toLowerCase(str.charAt(0)));
for(int i=1;i<str.length();i++){
c=str.charAt(i);
if(Character.isUpperCase(c)){
sb.append('-');
sb.append(Character.toLowerCase(c));
}
else sb.append(c);
}
return sb.toString();
}
/**
* translate a string in hypen notation to a string in camel notation
* example:
* hello-world -> helloWorld
* @param str
* @return
*/
public static String hypenToCamelNotation(String str) {
if(isEmpty(str)) return str;
StringBuilder sb=new StringBuilder();
int len=str.length();
char c;
for(int i=0;i<str.length();i++){
c=str.charAt(i);
if(c=='-'){
if(len>++i) sb.append(Character.toUpperCase(str.charAt(i)));
}
else sb.append(c);
}
return sb.toString();
}
public static boolean isAscii(String str) {
if ( str == null )
return false;
for(int i=str.length()-1;i>=0;i--){
if( str.charAt(i) > 127 )
return false;
}
return true;
}
/**
* returns true if all characters in the string are letters
*
* @param str
* @return
*/
public static boolean isAllAlpha(String str) {
if ( str == null ) return false;
for (int i=str.length()-1; i >= 0; i--) {
if ( !Character.isLetter( str.charAt(i) ) )
return false;
}
return true;
}
public static boolean isWhiteSpace(String str) {
if(str==null) return false;
int len=str.length();
char c;
for(int i=0;i<len;i++){
c=str.charAt(i);
if(c!=' ' && c!='\t' && c!='\b' && c!='\r' && c!='\n') return false;
}
return true;
}
/**
* this method works different from the regular substring method, the regular substring method takes startIndex and endIndex as second and third argument,
* this method takes offset and length
* @param str
* @param off
* @param len
* @return
*/
public static String substring(String str, int off, int len) {
return str.substring(off,off+len);
}
/**
* this is the public entry point for the replaceMap() method
*
* @param input - the string on which the replacements should be performed.
* @param map - a java.util.Map with key/value pairs where the key is the substring to find and the value is the substring with which to replace the matched key
* @param ignoreCase - if true then matches will not be case sensitive
* @return
* @throws PageException
*/
public static String replaceMap( String input, Map map, boolean ignoreCase ) throws PageException {
return replaceMap( input, map, ignoreCase, true );
}
/**
* this is the core of the replaceMap() method.
*
* it is called once from the public entry point and then internally from resolveInternals()
*
* when doResolveInternals is true -- this method calls resolveInternals. therefore, calls from resolveInternals()
* must pass false to that param to avoid an infinite ping-pong loop
*
* @param input - the string on which the replacements should be performed.
* @param map - a java.util.Map with key/value pairs where the key is the substring to find and the value is the substring with which to replace the matched key
* @param ignoreCase - if true then matches will not be case sensitive
* @param doResolveInternals - only the initial call (from the public entry point) should pass true
* @return
* @throws PageException
*/
private static String replaceMap( String input, Map map, boolean ignoreCase, boolean doResolveInternals ) throws PageException {
if ( doResolveInternals )
map = resolveInternals( map, ignoreCase, 0 );
String result = input;
Iterator<Map.Entry> it = map.entrySet().iterator();
Map.Entry e;
while ( it.hasNext() ) {
e = it.next();
result = replace( result, Caster.toString(e.getKey()), Caster.toString(e.getValue()), false, ignoreCase );
}
return result;
}
/**
* resolves internal values within the map, so if the map has a key "{signature}"
* and its value is "Team {group}" and there's a key with the value {group} whose
* value is "Railo", then {signature} will resolve to "Team Railo".
*
* {signature} = "Team {group}"
* {group} = "Railo"
*
* then signature will resolve to
*
* {signature} = "Team Railo"
*
* @param map - key/value pairs for find key/replace with value
* @param ignoreCase - if true then matches will not be case sensitive
* @param count - used internally as safety valve to ensure that we don't go into infinite loop if two values reference each-other
* @return
* @throws PageException
*/
private static Map resolveInternals( Map map, boolean ignoreCase, int count ) throws PageException {
Map result = new HashMap();
Iterator<Map.Entry> it = map.entrySet().iterator();
boolean isModified = false;
Map.Entry e;
String v,r;
while ( it.hasNext() ) {
e = it.next();
v = Caster.toString( e.getValue() );
r = replaceMap( v, map, ignoreCase, false ); // pass false for last arg so that replaceMap() will not call this method in an infinite loop
result.put( Caster.toString( e.getKey() ), r );
if ( !v.equalsIgnoreCase( r ) )
isModified = true;
}
if ( isModified && count++ < map.size() )
result = resolveInternals( result, ignoreCase, count ); // recursive call
return result;
}
}