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authorBenjamin J. Culkin <bjculkin@mix.wvu.edu>2017-10-08 22:39:59 -0300
committerBenjamin J. Culkin <bjculkin@mix.wvu.edu>2017-10-08 22:39:59 -0300
commitc82e3b3b2de0633317ec8fc85925e91422820597 (patch)
tree96567416ce23c5ce85601f9cedc3a94bb1c55cba /base/src/main/java/bjc/utils/parserutils/delims/RegexOpener.java
parentb3ac1c8690c3e14c879913e5dcc03a5f5e14876e (diff)
Start splitting into maven modules
Diffstat (limited to 'base/src/main/java/bjc/utils/parserutils/delims/RegexOpener.java')
-rw-r--r--base/src/main/java/bjc/utils/parserutils/delims/RegexOpener.java54
1 files changed, 54 insertions, 0 deletions
diff --git a/base/src/main/java/bjc/utils/parserutils/delims/RegexOpener.java b/base/src/main/java/bjc/utils/parserutils/delims/RegexOpener.java
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+++ b/base/src/main/java/bjc/utils/parserutils/delims/RegexOpener.java
@@ -0,0 +1,54 @@
+package bjc.utils.parserutils.delims;
+
+import java.util.function.Function;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+import bjc.utils.data.IPair;
+import bjc.utils.data.Pair;
+
+/**
+ * A predicated opener for use with {@link RegexCloser}
+ *
+ * @author bjculkin
+ *
+ */
+public class RegexOpener implements Function<String, IPair<String, String[]>> {
+ private final String name;
+
+ private final Pattern patt;
+
+ /**
+ * Create a new regex opener.
+ *
+ * @param groupName
+ * The name of the opened group.
+ *
+ * @param groupRegex
+ * The regex that matches the opener.
+ */
+ public RegexOpener(final String groupName, final String groupRegex) {
+ name = groupName;
+
+ patt = Pattern.compile(groupRegex);
+ }
+
+ @Override
+ public IPair<String, String[]> apply(final String str) {
+ final Matcher m = patt.matcher(str);
+
+ if (m.matches()) {
+ final int numGroups = m.groupCount();
+
+ final String[] parms = new String[numGroups + 1];
+
+ for (int i = 0; i <= numGroups; i++) {
+ parms[i] = m.group(i);
+ }
+
+ return new Pair<>(name, parms);
+ }
+
+ return new Pair<>(null, null);
+ }
+}