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authorbjculkin <bjculkin@mix.wvu.edu>2017-03-17 08:33:37 -0400
committerbjculkin <bjculkin@mix.wvu.edu>2017-03-17 08:33:37 -0400
commita63c30f5fe9ee302e73bb30e35095d789adb1a80 (patch)
tree8bb952e6c4f61172597e945f58d8244c24ea88b0 /BJC-Utils2/src/main/java/bjc/utils/funcutils/StringUtils.java
parent897c15c70a6b11463686293893518bd9b4d5c29c (diff)
Refactor StringUtils
Moved a bunch of token-oriented stuff from StringUtils to a new TokenUtils class.
Diffstat (limited to 'BJC-Utils2/src/main/java/bjc/utils/funcutils/StringUtils.java')
-rw-r--r--BJC-Utils2/src/main/java/bjc/utils/funcutils/StringUtils.java172
1 files changed, 0 insertions, 172 deletions
diff --git a/BJC-Utils2/src/main/java/bjc/utils/funcutils/StringUtils.java b/BJC-Utils2/src/main/java/bjc/utils/funcutils/StringUtils.java
index 77fec7e..a7b4436 100644
--- a/BJC-Utils2/src/main/java/bjc/utils/funcutils/StringUtils.java
+++ b/BJC-Utils2/src/main/java/bjc/utils/funcutils/StringUtils.java
@@ -1,10 +1,6 @@
package bjc.utils.funcutils;
import java.util.Deque;
-import java.util.LinkedList;
-import java.util.List;
-import java.util.regex.Matcher;
-import java.util.regex.Pattern;
/**
* Utility methods for operations on strings
@@ -14,25 +10,6 @@ import java.util.regex.Pattern;
*/
public class StringUtils {
/**
- * Checks if the given expression contains the specified operator in a
- * situation that indicates its use as an infix operator.
- *
- * @param expression
- * The expression to check
- * @param operator
- * The operator to see if it is contained
- * @return Whether or not the given expression contains the specified
- * operator as a infix operator
- */
- public static boolean containsInfixOperator(String expression, String operator) {
- // Bit annoying to have to use a full class name, but what are
- // you
- // going to do?
- return org.apache.commons.lang3.StringUtils.countMatches(expression, operator) == 1
- && !expression.equalsIgnoreCase(operator) && !expression.startsWith(operator);
- }
-
- /**
* Check if a string consists only of one or more matches of a regular
* expression
*
@@ -89,155 +66,6 @@ public class StringUtils {
return queue.isEmpty() ? "(none)" : queue.toString();
}
- /*
- * This regex matches java-style string escapes
- */
- private static String escapeString = "\\\\([btnfr\"'\\\\]" // Match
- // shortform
- // escape
- // sequences
- // like
- // \t
- // or
- // \"
- + "|[0-3]?[0-7]{1,2}" // Match
- // octal
- // escape
- // sequences
- + "|u[0-9a-fA-F]{4})"; // Match
- // unicode
- // escape
- // sequences
- private static Pattern escapePatt = Pattern.compile(escapeString);
-
- /*
- * This regular expression matches java style double quoted strings
- */
- private static Pattern doubleQuotePatt = Pattern.compile("(\"(" + "[^\\\\\"]+" // Match
- // one
- // or
- // more
- // characters
- // that
- // aren't
- // quotes
- // or
- // slashes
- + "|" + escapeString + ")" // Match escape sequences
- + "*\")"); // Match all of those things zero or more
- // times, followed by a closing quote
-
- /**
- * Remove double quoted strings from a string.
- *
- * Splits a string around instances of java-style double-quoted strings.
- *
- * @param inp
- * The string to split.
- *
- * @return An list containing alternating bits of the string and the
- * embedded double-quoted strings that seperated them.
- */
- public static List<String> removeDQuotedStrings(String inp) {
- StringBuffer work = new StringBuffer();
- List<String> res = new LinkedList<>();
-
- Matcher mt = doubleQuotePatt.matcher(inp);
-
- while(mt.find()) {
- mt.appendReplacement(work, "");
-
- res.add(work.toString());
- res.add(mt.group(1));
-
- work = new StringBuffer();
- }
- mt.appendTail(work);
- res.add(work.toString());
-
- return res;
- }
-
- /**
- * Replace escape characters with their actual equivalents.
- *
- * @param inp
- * The string to replace escape sequences in.
- *
- * @return The string with escape sequences replaced by their equivalent
- * characters.
- */
- public static String descapeString(String inp) {
- StringBuffer work = new StringBuffer();
-
- Matcher escapeFinder = escapePatt.matcher(inp);
- while(escapeFinder.find()) {
- String escapeSeq = escapeFinder.group();
-
- String escapeRep = "";
- switch(escapeSeq) {
- case "\\b":
- escapeRep = "\b";
- break;
- case "\\t":
- escapeRep = "\t";
- break;
- case "\\n":
- escapeRep = "\n";
- break;
- case "\\f":
- escapeRep = "\f";
- break;
- case "\\r":
- escapeRep = "\r";
- break;
- case "\\\"":
- escapeRep = "\"";
- break;
- case "\\'":
- escapeRep = "'";
- break;
- case "\\\\":
- escapeRep = "\\";
- break;
- default:
- if(escapeSeq.startsWith("u")) {
- escapeRep = handleUnicodeEscape(escapeSeq.substring(1));
- } else {
- escapeRep = handleOctalEscape(escapeSeq);
- }
- }
-
- escapeFinder.appendReplacement(work, escapeRep);
- }
-
- escapeFinder.appendTail(work);
-
- return work.toString();
- }
-
- private static String handleUnicodeEscape(String seq) {
- int codepoint = Integer.parseInt(seq, 16);
-
- return new String(Character.toChars(codepoint));
- }
-
- private static String handleOctalEscape(String seq) {
- int codepoint = Integer.parseInt(seq, 8);
-
- return new String(Character.toChars(codepoint));
- }
-
- public static boolean isDouble(String inp) {
- return DoubleMatcher.floatingLiteral.matcher(inp).matches();
- }
-
- private static Pattern intLitPattern = Pattern.compile("\\A[+\\-]?\\d+\\Z");
-
- public static boolean isInt(String inp) {
- return intLitPattern.matcher(inp).matches();
- }
-
/**
* Converts a sequence to an English list.
*