package ryan.org.wordpress.android.util;
import java.io.IOException;
import java.io.StringWriter;
import java.io.Writer;
import java.util.HashMap;
import java.util.Map;
import java.util.TreeMap;
/**
* <p>
* Provides HTML and XML entity utilities.
* </p>
*
* @see <a href="http://hotwired.lycos.com/webmonkey/reference/special_characters/">ISO Entities</a>
* @see <a href="http://www.w3.org/TR/REC-html32#latin1">HTML 3.2 Character Entities for ISO Latin-1</a>
* @see <a href="http://www.w3.org/TR/REC-html40/sgml/entities.html">HTML 4.0 Character entity references</a>
* @see <a href="http://www.w3.org/TR/html401/charset.html#h-5.3">HTML 4.01 Character References</a>
* @see <a href="http://www.w3.org/TR/html401/charset.html#code-position">HTML 4.01 Code positions</a>
*
* @author <a href="mailto:alex@purpletech.com">Alexander Day Chaffee</a>
* @author <a href="mailto:ggregory@seagullsw.com">Gary Gregory</a>
* @since 2.0
* @version $Id: Entities.java 636641 2008-03-13 06:11:30Z bayard $
*/
class Entities {
private static final String[][] BASIC_ARRAY = {
{"quot", "34"},
{"amp", "38"},
{"lt", "60"},
{"gt", "62"}
};
private static final String[][] APOS_ARRAY = {{"apos", "39"},
};
// package scoped for testing
static final String[][] ISO8859_1_ARRAY = {{"nbsp", "160"},
{"iexcl", "161"},
{"cent", "162"},
{"pound", "163"},
{"curren", "164"},
{"yen", "165"},
{"brvbar", "166"},
{"sect", "167"},
{"uml", "168"},
{"copy", "169"},
{"ordf", "170"},
{"laquo", "171"},
{"not", "172"},
{"shy", "173"},
{"reg", "174"},
{"macr", "175"},
{"deg", "176"},
{"plusmn", "177"},
{"sup2", "178"},
{"sup3", "179"},
{"acute", "180"},
{"micro", "181"},
{"para", "182"},
{"middot", "183"},
{"cedil", "184"},
{"sup1", "185"},
{"ordm", "186"},
{"raquo", "187"},
{"frac14", "188"},
{"frac12", "189"},
{"frac34", "190"},
{"iquest", "191"},
{"Agrave", "192"},
{"Aacute", "193"},
{"Acirc", "194"},
{"Atilde", "195"},
{"Auml", "196"},
{"Aring", "197"},
{"AElig", "198"},
{"Ccedil", "199"},
{"Egrave", "200"},
{"Eacute", "201"},
{"Ecirc", "202"},
{"Euml", "203"},
{"Igrave", "204"},
{"Iacute", "205"},
{"Icirc", "206"},
{"Iuml", "207"},
{"ETH", "208"},
{"Ntilde", "209"},
{"Ograve", "210"},
{"Oacute", "211"},
{"Ocirc", "212"},
{"Otilde", "213"},
{"Ouml", "214"},
{"times", "215"},
{"Oslash", "216"},
{"Ugrave", "217"},
{"Uacute", "218"},
{"Ucirc", "219"},
{"Uuml", "220"},
{"Yacute", "221"},
{"THORN", "222"},
{"szlig", "223"},
{"agrave", "224"},
{"aacute", "225"},
{"acirc", "226"},
{"atilde", "227"},
{"auml", "228"},
{"aring", "229"},
{"aelig", "230"},
{"ccedil", "231"},
{"egrave", "232"},
{"eacute", "233"},
{"ecirc", "234"},
{"euml", "235"},
{"igrave", "236"},
{"iacute", "237"},
{"icirc", "238"},
{"iuml", "239"},
{"eth", "240"},
{"ntilde", "241"},
{"ograve", "242"},
{"oacute", "243"},
{"ocirc", "244"},
{"otilde", "245"},
{"ouml", "246"},
{"divide", "247"},
{"oslash", "248"},
{"ugrave", "249"},
{"uacute", "250"},
{"ucirc", "251"},
{"uuml", "252"},
{"yacute", "253"},
{"thorn", "254"},
{"yuml", "255"},
};
// http://www.w3.org/TR/REC-html40/sgml/entities.html
// package scoped for testing
static final String[][] HTML40_ARRAY = {
// <!-- Latin Extended-B -->
{"fnof", "402"},
{"Alpha", "913"},
{"Beta", "914"},
{"Gamma", "915"},
{"Delta", "916"},
{"Epsilon", "917"},
{"Zeta", "918"},
{"Eta", "919"},
{"Theta", "920"},
{"Iota", "921"},
{"Kappa", "922"},
{"Lambda", "923"},
{"Mu", "924"},
{"Nu", "925"},
{"Xi", "926"},
{"Omicron", "927"},
{"Pi", "928"},
{"Rho", "929"},
// <!-- there is no Sigmaf, and no U+03A2 character either -->
{"Sigma", "931"},
{"Tau", "932"},
{"Upsilon", "933"},
{"Phi", "934"},
{"Chi", "935"},
{"Psi", "936"},
{"Omega", "937"},
{"alpha", "945"},
{"beta", "946"},
{"gamma", "947"},
{"delta", "948"},
{"epsilon", "949"},
{"zeta", "950"},
{"eta", "951"},
{"theta", "952"},
{"iota", "953"},
{"kappa", "954"},
{"lambda", "955"},
{"mu", "956"},
{"nu", "957"},
{"xi", "958"},
{"omicron", "959"},
{"pi", "960"},
{"rho", "961"},
{"sigmaf", "962"},
{"sigma", "963"},
{"tau", "964"},
{"upsilon", "965"},
{"phi", "966"},
{"chi", "967"},
{"psi", "968"},
{"omega", "969"},
{"thetasym", "977"},
{"upsih", "978"},
{"piv", "982"},
// <!-- General Punctuation -->
{"bull", "8226"},
// <!-- bullet is NOT the same as bullet operator, U+2219 -->
{"hellip", "8230"},
{"prime", "8242"},
{"Prime", "8243"},
{"oline", "8254"},
{"frasl", "8260"},
// <!-- Letterlike Symbols -->
{"weierp", "8472"},
{"image", "8465"},
{"real", "8476"},
{"trade", "8482"},
{"alefsym", "8501"},
// <!-- alef symbol is NOT the same as hebrew letter alef,U+05D0 although the
// same glyph could be used to depict both characters -->
// <!-- Arrows -->
{"larr", "8592"},
{"uarr", "8593"},
{"rarr", "8594"},
{"darr", "8595"},
{"harr", "8596"},
{"crarr", "8629"},
{"lArr", "8656"},
// <!-- ISO 10646 does not say that lArr is the same as the 'is implied by'
// arrow but also does not have any other character for that function.
// So ? lArr canbe used for 'is implied by' as ISOtech suggests -->
{"uArr", "8657"},
{"rArr", "8658"},
// <!-- ISO 10646 does not say this is the 'implies' character but does not
// have another character with this function so ?rArr can be used for
// 'implies' as ISOtech suggests -->
{"dArr", "8659"},
{"hArr", "8660"},
// <!-- Mathematical Operators -->
{"forall", "8704"},
{"part", "8706"},
{"exist", "8707"},
{"empty", "8709"},
{"nabla", "8711"},
{"isin", "8712"},
{"notin", "8713"},
{"ni", "8715"},
// <!-- should there be a more memorable name than 'ni'? -->
{"prod", "8719"},
// <!-- prod is NOT the same character as U+03A0 'greek capital letter pi'
// though the same glyph might be used for both -->
{"sum", "8721"},
// <!-- sum is NOT the same character as U+03A3 'greek capital letter sigma'
// though the same glyph might be used for both -->
{"minus", "8722"},
{"lowast", "8727"},
{"radic", "8730"},
{"prop", "8733"},
{"infin", "8734"},
{"ang", "8736"},
{"and", "8743"},
{"or", "8744"},
{"cap", "8745"},
{"cup", "8746"},
{"int", "8747"},
{"there4", "8756"},
{"sim", "8764"}, // tilde operator = varies with = similar to,U+223C ISOtech -->
// <!-- tilde operator is NOT the same character as the tilde, U+007E,although
// the same glyph might be used to represent both -->
{"cong", "8773"},
{"asymp", "8776"},
{"ne", "8800"},
{"equiv", "8801"},
{"le", "8804"},
{"ge", "8805"},
{"sub", "8834"},
{"sup", "8835"},
// <!-- note that nsup, 'not a superset of, U+2283' is not covered by the
// Symbol font encoding and is not included. Should it be, for symmetry?
// It is in ISOamsn --> <!ENTITY nsub", "8836"},
// not a subset of, U+2284 ISOamsn -->
{"sube", "8838"},
{"supe", "8839"},
{"oplus", "8853"},
{"otimes", "8855"},
{"perp", "8869"},
{"sdot", "8901"},
// <!-- dot operator is NOT the same character as U+00B7 middle dot -->
// <!-- Miscellaneous Technical -->
{"lceil", "8968"},
{"rceil", "8969"},
{"lfloor", "8970"},
{"rfloor", "8971"},
{"lang", "9001"},
// <!-- lang is NOT the same character as U+003C 'less than' or U+2039 'single left-pointing angle quotation
// mark' -->
{"rang", "9002"},
// <!-- rang is NOT the same character as U+003E 'greater than' or U+203A
// 'single right-pointing angle quotation mark' -->
// <!-- Geometric Shapes -->
{"loz", "9674"},
// <!-- Miscellaneous Symbols -->
{"spades", "9824"},
// <!-- black here seems to mean filled as opposed to hollow -->
{"clubs", "9827"},
{"hearts", "9829"},
{"diams", "9830"},
// <!-- Latin Extended-A -->
{"OElig", "338"},
{"oelig", "339"},
// <!-- ligature is a misnomer, this is a separate character in some languages -->
{"Scaron", "352"},
{"scaron", "353"},
{"Yuml", "376"},
// <!-- Spacing Modifier Letters -->
{"circ", "710"},
{"tilde", "732"},
// <!-- General Punctuation -->
{"ensp", "8194"},
{"emsp", "8195"},
{"thinsp", "8201"},
{"zwnj", "8204"},
{"zwj", "8205"},
{"lrm", "8206"},
{"rlm", "8207"},
{"ndash", "8211"},
{"mdash", "8212"},
{"lsquo", "8216"},
{"rsquo", "8217"},
{"sbquo", "8218"},
{"ldquo", "8220"},
{"rdquo", "8221"},
{"bdquo", "8222"},
{"dagger", "8224"},
{"Dagger", "8225"},
{"permil", "8240"},
{"lsaquo", "8249"},
// <!-- lsaquo is proposed but not yet ISO standardized -->
{"rsaquo", "8250"},
// <!-- rsaquo is proposed but not yet ISO standardized -->
{"euro", "8364"},
};
/**
* <p>
* The set of entities supported by standard XML.
* </p>
*/
public static final Entities XML;
/**
* <p>
* The set of entities supported by HTML 3.2.
* </p>
*/
public static final Entities HTML32;
/**
* <p>
* The set of entities supported by HTML 4.0.
* </p>
*/
public static final Entities HTML40;
public static final Entities HTML40_escape;
static {
XML = new Entities();
XML.addEntities(BASIC_ARRAY);
XML.addEntities(APOS_ARRAY);
}
static {
HTML32 = new Entities();
HTML32.addEntities(BASIC_ARRAY);
HTML32.addEntities(ISO8859_1_ARRAY);
}
static {
HTML40 = new Entities();
fillWithHtml40Entities(HTML40);
HTML40_escape = new Entities();
fillWithHtml40EntitiesEscape(HTML40);
}
/**
* <p>
* Fills the specified entities instance with HTML 40 entities.
* </p>
*
* @param entities
* the instance to be filled.
*/
static void fillWithHtml40Entities(Entities entities) {
entities.addEntities(BASIC_ARRAY);
entities.addEntities(ISO8859_1_ARRAY);
entities.addEntities(HTML40_ARRAY);
}
static void fillWithHtml40EntitiesEscape(Entities entities) {
//entities.addEntities(BASIC_ARRAY);
entities.addEntities(ISO8859_1_ARRAY);
entities.addEntities(HTML40_ARRAY);
}
static interface EntityMap {
/**
* <p>
* Add an entry to this entity map.
* </p>
*
* @param name
* the entity name
* @param value
* the entity value
*/
void add(String name, int value);
/**
* <p>
* Returns the name of the entity identified by the specified value.
* </p>
*
* @param value
* the value to locate
* @return entity name associated with the specified value
*/
String name(int value);
/**
* <p>
* Returns the value of the entity identified by the specified name.
* </p>
*
* @param name
* the name to locate
* @return entity value associated with the specified name
*/
int value(String name);
}
static class PrimitiveEntityMap implements EntityMap {
private Map<String, Integer> mapNameToValue = new HashMap<String, Integer>();
private IntHashMap mapValueToName = new IntHashMap();
/**
* {@inheritDoc}
*/
public void add(String name, int value) {
mapNameToValue.put(name, new Integer(value));
mapValueToName.put(value, name);
}
/**
* {@inheritDoc}
*/
public String name(int value) {
return (String) mapValueToName.get(value);
}
/**
* {@inheritDoc}
*/
public int value(String name) {
Object value = mapNameToValue.get(name);
if (value == null) {
return -1;
}
return ((Integer) value).intValue();
}
}
static abstract class MapIntMap implements Entities.EntityMap {
protected Map<String, Integer> mapNameToValue;
protected Map<Integer, String> mapValueToName;
/**
* {@inheritDoc}
*/
public void add(String name, int value) {
mapNameToValue.put(name, new Integer(value));
mapValueToName.put(new Integer(value), name);
}
/**
* {@inheritDoc}
*/
public String name(int value) {
return (String) mapValueToName.get(new Integer(value));
}
/**
* {@inheritDoc}
*/
public int value(String name) {
Object value = mapNameToValue.get(name);
if (value == null) {
return -1;
}
return ((Integer) value).intValue();
}
}
static class HashEntityMap extends MapIntMap {
/**
* Constructs a new instance of <code>HashEntityMap</code>.
*/
public HashEntityMap() {
mapNameToValue = new HashMap<String, Integer>();
mapValueToName = new HashMap<Integer, String>();
}
}
static class TreeEntityMap extends MapIntMap {
/**
* Constructs a new instance of <code>TreeEntityMap</code>.
*/
public TreeEntityMap() {
mapNameToValue = new TreeMap<String, Integer>();
mapValueToName = new TreeMap<Integer, String>();
}
}
static class LookupEntityMap extends PrimitiveEntityMap {
private String[] lookupTable;
private int LOOKUP_TABLE_SIZE = 256;
/**
* {@inheritDoc}
*/
public String name(int value) {
if (value < LOOKUP_TABLE_SIZE) {
return lookupTable()[value];
}
return super.name(value);
}
/**
* <p>
* Returns the lookup table for this entity map. The lookup table is created if it has not been previously.
* </p>
*
* @return the lookup table
*/
private String[] lookupTable() {
if (lookupTable == null) {
createLookupTable();
}
return lookupTable;
}
/**
* <p>
* Creates an entity lookup table of LOOKUP_TABLE_SIZE elements, initialized with entity names.
* </p>
*/
private void createLookupTable() {
lookupTable = new String[LOOKUP_TABLE_SIZE];
for (int i = 0; i < LOOKUP_TABLE_SIZE; ++i) {
lookupTable[i] = super.name(i);
}
}
}
static class ArrayEntityMap implements EntityMap {
protected int growBy = 100;
protected int size = 0;
protected String[] names;
protected int[] values;
/**
* Constructs a new instance of <code>ArrayEntityMap</code>.
*/
public ArrayEntityMap() {
names = new String[growBy];
values = new int[growBy];
}
/**
* Constructs a new instance of <code>ArrayEntityMap</code> specifying the size by which the array should
* grow.
*
* @param growBy
* array will be initialized to and will grow by this amount
*/
public ArrayEntityMap(int growBy) {
this.growBy = growBy;
names = new String[growBy];
values = new int[growBy];
}
/**
* {@inheritDoc}
*/
public void add(String name, int value) {
ensureCapacity(size + 1);
names[size] = name;
values[size] = value;
size++;
}
/**
* Verifies the capacity of the entity array, adjusting the size if necessary.
*
* @param capacity
* size the array should be
*/
protected void ensureCapacity(int capacity) {
if (capacity > names.length) {
int newSize = Math.max(capacity, size + growBy);
String[] newNames = new String[newSize];
System.arraycopy(names, 0, newNames, 0, size);
names = newNames;
int[] newValues = new int[newSize];
System.arraycopy(values, 0, newValues, 0, size);
values = newValues;
}
}
/**
* {@inheritDoc}
*/
public String name(int value) {
for (int i = 0; i < size; ++i) {
if (values[i] == value) {
return names[i];
}
}
return null;
}
/**
* {@inheritDoc}
*/
public int value(String name) {
for (int i = 0; i < size; ++i) {
if (names[i].equals(name)) {
return values[i];
}
}
return -1;
}
}
static class BinaryEntityMap extends ArrayEntityMap {
/**
* Constructs a new instance of <code>BinaryEntityMap</code>.
*/
public BinaryEntityMap() {
super();
}
/**
* Constructs a new instance of <code>ArrayEntityMap</code> specifying the size by which the underlying array
* should grow.
*
* @param growBy
* array will be initialized to and will grow by this amount
*/
public BinaryEntityMap(int growBy) {
super(growBy);
}
/**
* Performs a binary search of the entity array for the specified key. This method is based on code in
* {@link java.util.Arrays}.
*
* @param key
* the key to be found
* @return the index of the entity array matching the specified key
*/
private int binarySearch(int key) {
int low = 0;
int high = size - 1;
while (low <= high) {
int mid = (low + high) >>> 1;
int midVal = values[mid];
if (midVal < key) {
low = mid + 1;
} else if (midVal > key) {
high = mid - 1;
} else {
return mid; // key found
}
}
return -(low + 1); // key not found.
}
/**
* {@inheritDoc}
*/
public void add(String name, int value) {
ensureCapacity(size + 1);
int insertAt = binarySearch(value);
if (insertAt > 0) {
return; // note: this means you can't insert the same value twice
}
insertAt = -(insertAt + 1); // binarySearch returns it negative and off-by-one
System.arraycopy(values, insertAt, values, insertAt + 1, size - insertAt);
values[insertAt] = value;
System.arraycopy(names, insertAt, names, insertAt + 1, size - insertAt);
names[insertAt] = name;
size++;
}
/**
* {@inheritDoc}
*/
public String name(int value) {
int index = binarySearch(value);
if (index < 0) {
return null;
}
return names[index];
}
}
// package scoped for testing
EntityMap map = new Entities.LookupEntityMap();
/**
* <p>
* Adds entities to this entity.
* </p>
*
* @param entityArray
* array of entities to be added
*/
public void addEntities(String[][] entityArray) {
for (int i = 0; i < entityArray.length; ++i) {
addEntity(entityArray[i][0], Integer.parseInt(entityArray[i][1]));
}
}
/**
* <p>
* Add an entity to this entity.
* </p>
*
* @param name
* name of the entity
* @param value
* vale of the entity
*/
public void addEntity(String name, int value) {
map.add(name, value);
}
/**
* <p>
* Returns the name of the entity identified by the specified value.
* </p>
*
* @param value
* the value to locate
* @return entity name associated with the specified value
*/
public String entityName(int value) {
return map.name(value);
}
/**
* <p>
* Returns the value of the entity identified by the specified name.
* </p>
*
* @param name
* the name to locate
* @return entity value associated with the specified name
*/
public int entityValue(String name) {
return map.value(name);
}
/**
* <p>
* Escapes the characters in a <code>String</code>.
* </p>
*
* <p>
* For example, if you have called addEntity("foo", 0xA1), escape("\u00A1") will return
* "&foo;"
* </p>
*
* @param str
* The <code>String</code> to escape.
* @return A new escaped <code>String</code>.
*/
public String escape(String str) {
StringWriter stringWriter = createStringWriter(str);
try {
this.escape(stringWriter, str);
} catch (IOException e) {
// This should never happen because ALL the StringWriter methods called by #escape(Writer, String) do not
// throw IOExceptions.
//throw new UnhandledException(e);
}
return stringWriter.toString();
}
/**
* <p>
* Escapes the characters in the <code>String</code> passed and writes the result to the <code>Writer</code>
* passed.
* </p>
*
* @param writer
* The <code>Writer</code> to write the results of the escaping to. Assumed to be a non-null value.
* @param str
* The <code>String</code> to escape. Assumed to be a non-null value.
* @throws IOException
* when <code>Writer</code> passed throws the exception from calls to the {@link Writer#write(int)}
* methods.
*
* @see #escape(String)
* @see Writer
*/
public void escape(Writer writer, String str) throws IOException {
int len = str.length();
for (int i = 0; i < len; i++) {
char c = str.charAt(i);
String entityName = this.entityName(c);
if (entityName == null) {
if (c > 0x7F) {
writer.write("&#");
writer.write(Integer.toString(c, 10));
writer.write(';');
} else {
writer.write(c);
}
} else {
writer.write('&');
writer.write(entityName);
writer.write(';');
}
}
}
/**
* <p>
* Unescapes the entities in a <code>String</code>.
* </p>
*
* <p>
* For example, if you have called addEntity("foo", 0xA1), unescape("&foo;") will return
* "\u00A1"
* </p>
*
* @param str
* The <code>String</code> to escape.
* @return A new escaped <code>String</code>.
*/
public String unescape(String str) {
int firstAmp = str.indexOf('&');
if (firstAmp < 0) {
return str;
} else {
StringWriter stringWriter = createStringWriter(str);
try {
this.doUnescape(stringWriter, str, firstAmp);
} catch (IOException e) {
// This should never happen because ALL the StringWriter methods called by #escape(Writer, String)
// do not throw IOExceptions.
// throw new UnhandledException(e);
}
return stringWriter.toString();
}
}
/**
* Make the StringWriter 10% larger than the source String to avoid growing the writer
*
* @param str The source string
* @return A newly created StringWriter
*/
private StringWriter createStringWriter(String str) {
return new StringWriter((int) (str.length() + (str.length() * 0.1)));
}
/**
* <p>
* Unescapes the escaped entities in the <code>String</code> passed and writes the result to the
* <code>Writer</code> passed.
* </p>
*
* @param writer
* The <code>Writer</code> to write the results to; assumed to be non-null.
* @param str
* The source <code>String</code> to unescape; assumed to be non-null.
* @throws IOException
* when <code>Writer</code> passed throws the exception from calls to the {@link Writer#write(int)}
* methods.
*
* @see #escape(String)
* @see Writer
*/
public void unescape(Writer writer, String str) throws IOException {
int firstAmp = str.indexOf('&');
if (firstAmp < 0) {
writer.write(str);
return;
} else {
doUnescape(writer, str, firstAmp);
}
}
/**
* Underlying unescape method that allows the optimisation of not starting from the 0 index again.
*
* @param writer
* The <code>Writer</code> to write the results to; assumed to be non-null.
* @param str
* The source <code>String</code> to unescape; assumed to be non-null.
* @param firstAmp
* The <code>int</code> index of the first ampersand in the source String.
* @throws IOException
* when <code>Writer</code> passed throws the exception from calls to the {@link Writer#write(int)}
* methods.
*/
private void doUnescape(Writer writer, String str, int firstAmp) throws IOException {
writer.write(str, 0, firstAmp);
int len = str.length();
for (int i = firstAmp; i < len; i++) {
char c = str.charAt(i);
if (c == '&') {
int nextIdx = i + 1;
int semiColonIdx = str.indexOf(';', nextIdx);
if (semiColonIdx == -1) {
writer.write(c);
continue;
}
int amphersandIdx = str.indexOf('&', i + 1);
if (amphersandIdx != -1 && amphersandIdx < semiColonIdx) {
// Then the text looks like &...&...;
writer.write(c);
continue;
}
String entityContent = str.substring(nextIdx, semiColonIdx);
int entityValue = -1;
int entityContentLen = entityContent.length();
if (entityContentLen > 0) {
if (entityContent.charAt(0) == '#') { // escaped value content is an integer (decimal or
// hexidecimal)
if (entityContentLen > 1) {
char isHexChar = entityContent.charAt(1);
try {
switch (isHexChar) {
case 'X' :
case 'x' : {
entityValue = Integer.parseInt(entityContent.substring(2), 16);
break;
}
default : {
entityValue = Integer.parseInt(entityContent.substring(1), 10);
}
}
if (entityValue > 0xFFFF) {
entityValue = -1;
}
} catch (NumberFormatException e) {
entityValue = -1;
}
}
} else { // escaped value content is an entity name
entityValue = this.entityValue(entityContent);
}
}
if (entityValue == -1) {
writer.write('&');
writer.write(entityContent);
writer.write(';');
} else {
writer.write(entityValue);
}
i = semiColonIdx; // move index up to the semi-colon
} else {
writer.write(c);
}
}
}
}