/**
* Return an email hyperlink using the given email address. If the given value is not a valid
* email string it will be rendered as is and not as a hyperlink.
*
* <p>If the given value is blank then the {@link #getEmptyString()} value will rendered instead.
*
* <p>The format of the returned email string will be:
*
* <pre class="codeHtml">
* <a href='mailto:email' attribute>email</a> </pre>
*
* @param email the email address to hyperlink
* @param attribute the anchor tag attribute to render
* @return a hyperlinked email
*/
public String email(String email, String attribute) {
if (StringUtils.isNotBlank(email)) {
if (email.indexOf('@') != -1 && !email.startsWith("@") && !email.endsWith("@")) {
HtmlStringBuffer buffer = new HtmlStringBuffer(128);
buffer.elementStart("a");
buffer.appendAttribute("href", "mailto:" + email);
if (StringUtils.isNotBlank(attribute)) {
buffer.append(" ");
buffer.append(attribute);
}
buffer.closeTag();
buffer.appendEscaped(email);
buffer.elementEnd("a");
return buffer.toString();
} else {
return email;
}
} else {
return getEmptyString();
}
}
/**
* Return an hyperlink using the given URL or email address value. If the given value is not a
* valid email string or URL it will note be hyperlinked and will be rendered as is.
*
* <p>If the given value is blank then the {@link #getEmptyString()} value will rendered instead.
*
* @param value the URL or email address to hyperlink
* @param attribute the anchor tag attribute to render
* @return a hyperlinked URL or email address
*/
public String link(String value, String attribute) {
if (StringUtils.isNotBlank(value)) {
HtmlStringBuffer buffer = new HtmlStringBuffer(128);
// If email
if (value.indexOf('@') != -1 && !value.startsWith("@") && !value.endsWith("@")) {
buffer.elementStart("a");
buffer.appendAttribute("href", "mailto:" + value);
if (StringUtils.isNotBlank(attribute)) {
buffer.append(" ");
buffer.append(attribute);
}
buffer.closeTag();
buffer.appendEscaped(value);
buffer.elementEnd("a");
} else if (value.startsWith("http")) {
int index = value.indexOf("//");
if (index != -1) {
index += 2;
} else {
index = 0;
}
buffer.elementStart("a");
buffer.appendAttribute("href", value);
if (StringUtils.isNotBlank(attribute)) {
buffer.append(" ");
buffer.append(attribute);
}
buffer.closeTag();
buffer.appendEscaped(value.substring(index));
buffer.elementEnd("a");
} else if (value.startsWith("www")) {
buffer.elementStart("a");
buffer.appendAttribute("href", "http://" + value);
if (StringUtils.isNotBlank(attribute)) {
buffer.append(" ");
buffer.append(attribute);
}
buffer.closeTag();
buffer.appendEscaped(value);
buffer.elementEnd("a");
} else {
buffer.append(value);
}
return buffer.toString();
}
return getEmptyString();
}
