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<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"><html xmlns="http://www.w3.org/1999/xhtml" lang="en"><head><meta http-equiv="Content-Type" content="text/html;charset=UTF-8"/><link rel="stylesheet" href="../jacoco-resources/report.css" type="text/css"/><link rel="shortcut icon" href="../jacoco-resources/report.gif" type="image/gif"/><title>StringUtils.java</title><link rel="stylesheet" href="../jacoco-resources/prettify.css" type="text/css"/><script type="text/javascript" src="../jacoco-resources/prettify.js"></script></head><body onload="window['PR_TAB_WIDTH']=4;prettyPrint()"><div class="breadcrumb" id="breadcrumb"><span class="info"><a href="../jacoco-sessions.html" class="el_session">Sessions</a></span><a href="../index.html" class="el_report">everge</a> > <a href="index.source.html" class="el_package">bjc.everge</a> > <span class="el_source">StringUtils.java</span></div><h1>StringUtils.java</h1><pre class="source lang-java linenums">package bjc.everge;
import java.util.*;
import java.util.regex.Pattern;
/**
* Utility methods for strings.
*
* @author Ben Culkin.
*/
<span class="nc" id="L12">public class StringUtils {</span>
/**
* Is the class in debug mode or not?
*/
<span class="fc" id="L16"> public static boolean isDebug = false;</span>
/**
* Split a string on every occurrence of a string not preceded by an escape.
*
* @param escape
* The escape that stops splitting.
* @param splat
* The string to split on. If this starts with the escape
* sequence, things will work poorly.
* @param inp
* The string to split.
* @return The string split as specified above.
*/
public static String[] escapeSplit(String escape, String splat, String inp) {
/*
* Special case some stuffs.
*/
// No input
<span class="pc bpc" id="L36" title="2 of 4 branches missed."> if (inp == null || inp.equals("")) {</span>
<span class="nc" id="L37"> return new String[] {</span>
inp
};
}
// Input does not contain any delimiters
<span class="fc bfc" id="L43" title="All 2 branches covered."> if (!inp.contains(splat)) {</span>
<span class="fc" id="L44"> return new String[] {</span>
inp
};
}
// No escape, so we can just split normally
<span class="pc bpc" id="L50" title="1 of 4 branches missed."> if (escape == null || escape.equals("")) {</span>
<span class="fc" id="L51"> return inp.split(Pattern.quote(splat));</span>
}
<span class="fc" id="L54"> List<String> ret = new ArrayList<>();</span>
/*
* Set up working variables
*/
// Copy of parameters
<span class="fc" id="L61"> String wrk = inp;</span>
// Index of first occurrence of split string
<span class="fc" id="L64"> int sidx = wrk.indexOf(splat);</span>
// Index of first occurrence of escaped string
<span class="fc" id="L66"> int eidx = wrk.indexOf(escape);</span>
// Was the last thing we saw an escape?
// This is used to enable the handling of escaping escapes
<span class="fc" id="L70"> boolean hadEscape = false;</span>
// As long as there an occurrence of either the split/escape
<span class="fc bfc" id="L73" title="All 4 branches covered."> while (sidx != -1 || eidx != -1) {</span>
// If there is an escape before a split
<span class="fc bfc" id="L75" title="All 4 branches covered."> if (eidx > 0 && eidx < sidx) {</span>
<span class="pc bpc" id="L76" title="1 of 2 branches missed."> if (isDebug)</span>
<span class="nc" id="L77"> System.err.printf("[TRACE] Considering escape\n");</span>
/*
* We potentially have an escaped sequence: - either an escaped split - or
* an escaped escape
*/
// Check for an escaped split
<span class="fc" id="L85"> boolean hasEscapedSplit = wrk.startsWith(splat, eidx + escape.length());</span>
<span class="fc bfc" id="L86" title="All 2 branches covered."> if (hasEscapedSplit) {</span>
// Skip over it
<span class="fc" id="L88"> int ofst = eidx + splat.length();</span>
<span class="fc" id="L90"> wrk = sliceStringL(wrk, eidx, escape.length());</span>
// Recalculate indexes
<span class="fc" id="L93"> sidx = wrk.indexOf(splat, ofst);</span>
<span class="fc" id="L94"> eidx = wrk.indexOf(escape, ofst);</span>
<span class="pc bpc" id="L96" title="1 of 2 branches missed."> if (isDebug) {</span>
<span class="nc" id="L97"> System.err.printf("[TRACE] After esc. split (%s) %d/%d\n", wrk,</span>
<span class="nc" id="L98"> sidx, eidx);</span>
}
// No pending escape
<span class="fc" id="L102"> hadEscape = false;</span>
<span class="fc" id="L103"> continue;</span>
}
// Check for an escaped escape
<span class="fc" id="L107"> boolean hasEscapedEscape = wrk.startsWith(escape, eidx + escape.length());</span>
<span class="pc bpc" id="L108" title="1 of 2 branches missed."> if (hasEscapedEscape) {</span>
// Skip over it
<span class="fc" id="L110"> int ofst = eidx + escape.length();</span>
<span class="fc" id="L112"> wrk = sliceStringL(wrk, eidx, escape.length());</span>
// Recalculate indexes
<span class="fc" id="L115"> sidx = wrk.indexOf(splat, ofst);</span>
<span class="fc" id="L116"> eidx = wrk.indexOf(escape, ofst);</span>
<span class="pc bpc" id="L118" title="1 of 2 branches missed."> if (isDebug) {</span>
<span class="nc" id="L119"> System.err.printf("[TRACE] After esc. escape (%s)/(%s) %d/%d\n",</span>
<span class="nc" id="L120"> wrk, wrk.substring(ofst), sidx, eidx);</span>
}
// There's a pending escape
<span class="fc" id="L124"> hadEscape = true;</span>
<span class="fc" id="L125"> continue;</span>
}
}
// Calculate whether there is currently an escape
<span class="fc" id="L130"> boolean hasEscape = false;</span>
{
<span class="fc" id="L132"> boolean tmp = wrk.startsWith(escape, sidx - escape.length());</span>
// boolean tmp = wrk.regionMatches(lo, escape, 0, escape.length());
<span class="fc bfc" id="L135" title="All 2 branches covered."> hasEscape = hadEscape ? false : tmp;</span>
}
// Handle anything that the pending escape may be applied to
<span class="pc bpc" id="L139" title="1 of 4 branches missed."> while (sidx != -1 && hasEscape) {</span>
<span class="nc" id="L140"> int oidx = wrk.indexOf(splat, sidx + escape.length());</span>
<span class="nc bnc" id="L142" title="All 2 branches missed."> if (oidx == -1)</span>
<span class="nc" id="L143"> break;</span>
<span class="nc" id="L145"> wrk = sliceStringL(wrk, oidx, escape.length());</span>
<span class="nc" id="L147"> sidx = oidx;</span>
<span class="nc" id="L149"> hasEscape = wrk.startsWith(escape, sidx - escape.length());</span>
<span class="nc" id="L150"> }</span>
<span class="fc bfc" id="L152" title="All 2 branches covered."> if (sidx == -1) {</span>
<span class="fc" id="L153"> break;</span>
}
<span class="fc" id="L156"> String tmp = wrk.substring(0, sidx);</span>
<span class="pc bpc" id="L158" title="1 of 2 branches missed."> if (isDebug) {</span>
<span class="nc" id="L159"> System.err.printf("[TRACE] Adding (%s) to returned splits; (%s)\n", tmp,</span>
<span class="nc" id="L160"> wrk.substring(sidx));</span>
}
<span class="fc" id="L163"> ret.add(tmp);</span>
<span class="pc bpc" id="L164" title="1 of 4 branches missed."> if (!tmp.equals("") && wrk.endsWith(tmp)) {</span>
<span class="nc" id="L165"> wrk = "";</span>
} else {
<span class="pc bpc" id="L167" title="1 of 2 branches missed."> if (wrk.indexOf(splat, sidx) != -1) {</span>
<span class="fc" id="L168"> wrk = wrk.substring(sidx + splat.length());</span>
} else {
<span class="nc" id="L170"> wrk = wrk.substring(sidx);</span>
}
}
<span class="fc" id="L174"> sidx = wrk.indexOf(splat);</span>
<span class="fc" id="L175"> eidx = wrk.indexOf(escape);</span>
<span class="fc" id="L177"> hadEscape = false;</span>
<span class="fc" id="L178"> }</span>
<span class="fc bfc" id="L180" title="All 2 branches covered."> if (!wrk.equals(""))</span>
<span class="fc" id="L181"> ret.add(wrk);</span>
<span class="fc" id="L183"> return ret.toArray(new String[0]);</span>
}
/**
* Slice a substring out of another string.
*
* @param strang
* The string to remove a substring from.
* @param lft
* The left-side of the substring to remove.
* @param rft
* The right-side of the substring to remove.
*
* @return The string, with the substring removed.
*/
public static String sliceString(String strang, int lft, int rft) {
<span class="fc" id="L199"> String leftSide = strang.substring(0, lft);</span>
<span class="fc" id="L200"> String rightSide = strang.substring(rft);</span>
<span class="fc" id="L202"> return leftSide + rightSide;</span>
}
/**
* Slice a substring out of another string.
*
* @param strang
* The string to remove a substring from.
* @param lft
* The left-side of the substring to remove.
* @param len
* The length of the substring to remove.
*
* @return The string, with the substring removed.
*/
public static String sliceStringL(String strang, int lft, int len) {
<span class="fc" id="L218"> String leftSide = strang.substring(0, lft);</span>
<span class="fc" id="L219"> String rightSide = strang.substring(lft + len);</span>
<span class="fc" id="L221"> return leftSide + rightSide;</span>
}
}
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