下面列出了java.lang.String#charAt ( ) 实例代码，或者点击链接到github查看源代码，也可以在右侧发表评论。
/**
* <p>Utility method for {@link #createNumber(String)}.</p>
*
* <p>Returns <code>true</code> if s is <code>null</code>.</p>
*
* @param str the String to check
* @return if it is all zeros or <code>null</code>
*/
private static boolean isAllZeros(final String str) {
if (str == null) {
return true;
}
for (int i = str.length() - 1; i >= 0; i--) {
if (str.charAt(i) != '0') {
return false;
}
}
return str.length() > 0;
}
/**
* This method was introduced to fix defect #26964. For Java 1.0.2
* on Win NT, the escape sequence \u0020 was not being handled
* correctly by the Java Properties class when it was the final
* character of a line. Instead the trailing blank was dropped
* and the next line was swallowed as a continuation. To work
* around the problem, we introduced our own metasymbol to represent
* a trailing blank. Hence:
*
* Performs substitution for any metasymbols in the message
* templates. So far only %B is needed. This was introduced
* to make it more convenient for .properties files to
* contain message templates with leading or trailing blanks
* (although %B may actually occur anywhere in a template).
* Subsequently, checking for '\n' has also been added. Now,
* wherever '\n' occurs in a message template, it is replaced
* with the value of System.getProperty ("line.separator").
*/
private static final void fixMessages (Properties p) {
Enumeration keys = p.keys ();
Enumeration elems = p.elements ();
while (keys.hasMoreElements ()) {
String key = (String) keys.nextElement ();
String elem = (String) elems.nextElement ();
int i = elem.indexOf (LTB);
boolean changed = false;
while (i != -1) {
if (i == 0)
elem = " " + elem.substring (2);
else
elem = elem.substring (0, i) + " " + elem.substring (i+2);
changed = true;
i = elem.indexOf (LTB);
}
int lsIncr = lineSeparator.length () - 1;
for (i=0; i<elem.length (); i++) {
if (elem.charAt (i) == NL) {
elem = elem.substring (0, i) +
lineSeparator + elem.substring (i+1);
i += lsIncr;
changed = true;
}
}
if (changed)
p.put (key, elem);
}
}
/**
* This method was introduced to fix defect #26964. For Java 1.0.2
* on Win NT, the escape sequence \u0020 was not being handled
* correctly by the Java Properties class when it was the final
* character of a line. Instead the trailing blank was dropped
* and the next line was swallowed as a continuation. To work
* around the problem, we introduced our own metasymbol to represent
* a trailing blank. Hence:
*
* Performs substitution for any metasymbols in the message
* templates. So far only %B is needed. This was introduced
* to make it more convenient for .properties files to
* contain message templates with leading or trailing blanks
* (although %B may actually occur anywhere in a template).
* Subsequently, checking for '\n' has also been added. Now,
* wherever '\n' occurs in a message template, it is replaced
* with the value of System.getProperty ("line.separator").
*/
private static final void fixMessages (Properties p) {
Enumeration keys = p.keys ();
Enumeration elems = p.elements ();
while (keys.hasMoreElements ()) {
String key = (String) keys.nextElement ();
String elem = (String) elems.nextElement ();
int i = elem.indexOf (LTB);
boolean changed = false;
while (i != -1) {
if (i == 0)
elem = " " + elem.substring (2);
else
elem = elem.substring (0, i) + " " + elem.substring (i+2);
changed = true;
i = elem.indexOf (LTB);
}
int lsIncr = lineSeparator.length () - 1;
for (i=0; i<elem.length (); i++) {
if (elem.charAt (i) == NL) {
elem = elem.substring (0, i) +
lineSeparator + elem.substring (i+1);
i += lsIncr;
changed = true;
}
}
if (changed)
p.put (key, elem);
}
}
/**
* This method was introduced to fix defect #26964. For Java 1.0.2
* on Win NT, the escape sequence \u0020 was not being handled
* correctly by the Java Properties class when it was the final
* character of a line. Instead the trailing blank was dropped
* and the next line was swallowed as a continuation. To work
* around the problem, we introduced our own metasymbol to represent
* a trailing blank. Hence:
*
* Performs substitution for any metasymbols in the message
* templates. So far only %B is needed. This was introduced
* to make it more convenient for .properties files to
* contain message templates with leading or trailing blanks
* (although %B may actually occur anywhere in a template).
* Subsequently, checking for '\n' has also been added. Now,
* wherever '\n' occurs in a message template, it is replaced
* with the value of System.getProperty ("line.separator").
*/
private static final void fixMessages (Properties p) {
Enumeration keys = p.keys ();
Enumeration elems = p.elements ();
while (keys.hasMoreElements ()) {
String key = (String) keys.nextElement ();
String elem = (String) elems.nextElement ();
int i = elem.indexOf (LTB);
boolean changed = false;
while (i != -1) {
if (i == 0)
elem = " " + elem.substring (2);
else
elem = elem.substring (0, i) + " " + elem.substring (i+2);
changed = true;
i = elem.indexOf (LTB);
}
int lsIncr = lineSeparator.length () - 1;
for (i=0; i<elem.length (); i++) {
if (elem.charAt (i) == NL) {
elem = elem.substring (0, i) +
lineSeparator + elem.substring (i+1);
i += lsIncr;
changed = true;
}
}
if (changed)
p.put (key, elem);
}
}
/**
* This method was introduced to fix defect #26964. For Java 1.0.2
* on Win NT, the escape sequence \u0020 was not being handled
* correctly by the Java Properties class when it was the final
* character of a line. Instead the trailing blank was dropped
* and the next line was swallowed as a continuation. To work
* around the problem, we introduced our own metasymbol to represent
* a trailing blank. Hence:
*
* Performs substitution for any metasymbols in the message
* templates. So far only %B is needed. This was introduced
* to make it more convenient for .properties files to
* contain message templates with leading or trailing blanks
* (although %B may actually occur anywhere in a template).
* Subsequently, checking for '\n' has also been added. Now,
* wherever '\n' occurs in a message template, it is replaced
* with the value of System.getProperty ("line.separator").
*/
private static final void fixMessages (Properties p) {
Enumeration keys = p.keys ();
Enumeration elems = p.elements ();
while (keys.hasMoreElements ()) {
String key = (String) keys.nextElement ();
String elem = (String) elems.nextElement ();
int i = elem.indexOf (LTB);
boolean changed = false;
while (i != -1) {
if (i == 0)
elem = " " + elem.substring (2);
else
elem = elem.substring (0, i) + " " + elem.substring (i+2);
changed = true;
i = elem.indexOf (LTB);
}
int lsIncr = lineSeparator.length () - 1;
for (i=0; i<elem.length (); i++) {
if (elem.charAt (i) == NL) {
elem = elem.substring (0, i) +
lineSeparator + elem.substring (i+1);
i += lsIncr;
changed = true;
}
}
if (changed)
p.put (key, elem);
}
}
/**
* This method was introduced to fix defect #26964. For Java 1.0.2
* on Win NT, the escape sequence \u0020 was not being handled
* correctly by the Java Properties class when it was the final
* character of a line. Instead the trailing blank was dropped
* and the next line was swallowed as a continuation. To work
* around the problem, we introduced our own metasymbol to represent
* a trailing blank. Hence:
*
* Performs substitution for any metasymbols in the message
* templates. So far only %B is needed. This was introduced
* to make it more convenient for .properties files to
* contain message templates with leading or trailing blanks
* (although %B may actually occur anywhere in a template).
* Subsequently, checking for '\n' has also been added. Now,
* wherever '\n' occurs in a message template, it is replaced
* with the value of System.getProperty ("line.separator").
*/
private static final void fixMessages (Properties p) {
Enumeration keys = p.keys ();
Enumeration elems = p.elements ();
while (keys.hasMoreElements ()) {
String key = (String) keys.nextElement ();
String elem = (String) elems.nextElement ();
int i = elem.indexOf (LTB);
boolean changed = false;
while (i != -1) {
if (i == 0)
elem = " " + elem.substring (2);
else
elem = elem.substring (0, i) + " " + elem.substring (i+2);
changed = true;
i = elem.indexOf (LTB);
}
int lsIncr = lineSeparator.length () - 1;
for (i=0; i<elem.length (); i++) {
if (elem.charAt (i) == NL) {
elem = elem.substring (0, i) +
lineSeparator + elem.substring (i+1);
i += lsIncr;
changed = true;
}
}
if (changed)
p.put (key, elem);
}
}
/**
* This method was introduced to fix defect #26964. For Java 1.0.2
* on Win NT, the escape sequence \u0020 was not being handled
* correctly by the Java Properties class when it was the final
* character of a line. Instead the trailing blank was dropped
* and the next line was swallowed as a continuation. To work
* around the problem, we introduced our own metasymbol to represent
* a trailing blank. Hence:
*
* Performs substitution for any metasymbols in the message
* templates. So far only %B is needed. This was introduced
* to make it more convenient for .properties files to
* contain message templates with leading or trailing blanks
* (although %B may actually occur anywhere in a template).
* Subsequently, checking for '\n' has also been added. Now,
* wherever '\n' occurs in a message template, it is replaced
* with the value of System.getProperty ("line.separator").
*/
private static final void fixMessages (Properties p) {
Enumeration keys = p.keys ();
Enumeration elems = p.elements ();
while (keys.hasMoreElements ()) {
String key = (String) keys.nextElement ();
String elem = (String) elems.nextElement ();
int i = elem.indexOf (LTB);
boolean changed = false;
while (i != -1) {
if (i == 0)
elem = " " + elem.substring (2);
else
elem = elem.substring (0, i) + " " + elem.substring (i+2);
changed = true;
i = elem.indexOf (LTB);
}
int lsIncr = lineSeparator.length () - 1;
for (i=0; i<elem.length (); i++) {
if (elem.charAt (i) == NL) {
elem = elem.substring (0, i) +
lineSeparator + elem.substring (i+1);
i += lsIncr;
changed = true;
}
}
if (changed)
p.put (key, elem);
}
}
/**
* This method was introduced to fix defect #26964. For Java 1.0.2
* on Win NT, the escape sequence \u0020 was not being handled
* correctly by the Java Properties class when it was the final
* character of a line. Instead the trailing blank was dropped
* and the next line was swallowed as a continuation. To work
* around the problem, we introduced our own metasymbol to represent
* a trailing blank. Hence:
*
* Performs substitution for any metasymbols in the message
* templates. So far only %B is needed. This was introduced
* to make it more convenient for .properties files to
* contain message templates with leading or trailing blanks
* (although %B may actually occur anywhere in a template).
* Subsequently, checking for '\n' has also been added. Now,
* wherever '\n' occurs in a message template, it is replaced
* with the value of System.getProperty ("line.separator").
*/
private static final void fixMessages (Properties p) {
Enumeration keys = p.keys ();
Enumeration elems = p.elements ();
while (keys.hasMoreElements ()) {
String key = (String) keys.nextElement ();
String elem = (String) elems.nextElement ();
int i = elem.indexOf (LTB);
boolean changed = false;
while (i != -1) {
if (i == 0)
elem = " " + elem.substring (2);
else
elem = elem.substring (0, i) + " " + elem.substring (i+2);
changed = true;
i = elem.indexOf (LTB);
}
int lsIncr = lineSeparator.length () - 1;
for (i=0; i<elem.length (); i++) {
if (elem.charAt (i) == NL) {
elem = elem.substring (0, i) +
lineSeparator + elem.substring (i+1);
i += lsIncr;
changed = true;
}
}
if (changed)
p.put (key, elem);
}
}
/**
* This method was introduced to fix defect #26964. For Java 1.0.2
* on Win NT, the escape sequence \u0020 was not being handled
* correctly by the Java Properties class when it was the final
* character of a line. Instead the trailing blank was dropped
* and the next line was swallowed as a continuation. To work
* around the problem, we introduced our own metasymbol to represent
* a trailing blank. Hence:
*
* Performs substitution for any metasymbols in the message
* templates. So far only %B is needed. This was introduced
* to make it more convenient for .properties files to
* contain message templates with leading or trailing blanks
* (although %B may actually occur anywhere in a template).
* Subsequently, checking for '\n' has also been added. Now,
* wherever '\n' occurs in a message template, it is replaced
* with the value of System.getProperty ("line.separator").
*/
private static final void fixMessages (Properties p) {
Enumeration keys = p.keys ();
Enumeration elems = p.elements ();
while (keys.hasMoreElements ()) {
String key = (String) keys.nextElement ();
String elem = (String) elems.nextElement ();
int i = elem.indexOf (LTB);
boolean changed = false;
while (i != -1) {
if (i == 0)
elem = " " + elem.substring (2);
else
elem = elem.substring (0, i) + " " + elem.substring (i+2);
changed = true;
i = elem.indexOf (LTB);
}
int lsIncr = lineSeparator.length () - 1;
for (i=0; i<elem.length (); i++) {
if (elem.charAt (i) == NL) {
elem = elem.substring (0, i) +
lineSeparator + elem.substring (i+1);
i += lsIncr;
changed = true;
}
}
if (changed)
p.put (key, elem);
}
}
public static List<String> lexSqlScript(String sqlScript) {
ArrayList<String> sl = new ArrayList<String>();
boolean inString = false, quoteNext = false;
StringBuilder b = new StringBuilder(100);
for (int i = 0; i < sqlScript.length(); i++) {
char c = sqlScript.charAt(i);
if (c == ';' && !inString && !quoteNext) {
sl.add(b.toString());
b = new StringBuilder(100);
inString = false;
quoteNext = false;
continue;
}
if (c == '\'' && !quoteNext) {
inString = !inString;
}
quoteNext = c == '\\' && !quoteNext;
b.append(c);
}
if (b.length() > 0) {
sl.add(b.toString());
}
return sl;
}
public static List<String> lexSqlScript(String sqlScript) {
ArrayList<String> sl = new ArrayList<String>();
boolean inString = false, quoteNext = false;
StringBuilder b = new StringBuilder(100);
for (int i = 0; i < sqlScript.length(); i++) {
char c = sqlScript.charAt(i);
if (c == ';' && !inString && !quoteNext) {
sl.add(b.toString());
b = new StringBuilder(100);
inString = false;
quoteNext = false;
continue;
}
if (c == '\'' && !quoteNext) {
inString = !inString;
}
quoteNext = c == '\\' && !quoteNext;
b.append(c);
}
if (b.length() > 0) {
sl.add(b.toString());
}
return sl;
}
String stringLiteral(String value) {
StringBuilder result = new StringBuilder();
result.append('"');
for (int i = 0; i < value.length(); i++) {
char c = value.charAt(i);
switch (c) {
case '"':
result.append("\\\"");
break;
case '\\':
result.append("\\\\");
break;
case '\b':
result.append("\\b");
break;
case '\t':
result.append("\\t");
break;
case '\n':
result.append("\\n");
if (i + 1 < value.length()) {
result.append("\"\n").append(" ").append(" ").append("+ \"");
}
break;
case '\f':
result.append("\\f");
break;
case '\r':
result.append("\\r");
break;
default:
if (Character.isISOControl(c)) {
new Formatter(result).format("\\u%04x", (int) c);
} else {
result.append(c);
}
}
}
result.append('"');
return result.toString();
}
@Override
public String getConfigStringForDefaultAPITemplate(String defaultVersion) throws APITemplateException {
StringWriter writer = new StringWriter();
try {
VelocityEngine velocityengine = new VelocityEngine();
if (!"not-defined".equalsIgnoreCase(getVelocityLogger())) {
velocityengine.setProperty(RuntimeConstants.RUNTIME_LOG_LOGSYSTEM_CLASS,
CommonsLogLogChute.class.getName());
velocityengine.setProperty(VelocityEngine.RESOURCE_LOADER, "classpath");
velocityengine.setProperty("classpath.resource.loader.class", ClasspathResourceLoader.class.getName());
}
velocityengine.setProperty(RuntimeConstants.FILE_RESOURCE_LOADER_PATH, CarbonUtils.getCarbonHome());
initVelocityEngine(velocityengine);
ConfigContext configcontext = new APIConfigContext(this.api);
configcontext = new TransportConfigContext(configcontext, api);
configcontext = new ResourceConfigContext(configcontext, api);
configcontext = new TemplateUtilContext(configcontext);
VelocityContext context = configcontext.getContext();
context.put("defaultVersion", defaultVersion);
String fwdApiContext = this.api.getContext();
if (fwdApiContext != null && fwdApiContext.charAt(0) == '/') {
fwdApiContext = fwdApiContext.substring(1);
}
context.put("fwdApiContext", fwdApiContext);
// for default version, we remove the {version} param from the apiContext
String apiContext = this.api.getContextTemplate();
if(apiContext.contains("{version}")){
apiContext = apiContext.replace("/{version}","");
apiContext = apiContext.replace("{version}","");
}
context.put("apiContext", apiContext);
Template t = velocityengine.getTemplate(this.getDefaultAPITemplatePath());
t.merge(context, writer);
} catch (Exception e) {
log.error("Velocity Error", e);
throw new APITemplateException("Velocity Error", e);
}
return writer.toString();
}