needed for applet search

[jalview.git] / src / com / stevesoft / pat / Start.java

diff --git a/src/com/stevesoft/pat/Start.java b/src/com/stevesoft/pat/Start.java
new file mode 100755 (executable)
index 0000000..9784358
--- /dev/null
+++ b/src/com/stevesoft/pat/Start.java
@@ -0,0 +1,31 @@
+//\r
+// This software is now distributed according to\r
+// the Lesser Gnu Public License.  Please see\r
+// http://www.gnu.org/copyleft/lesser.txt for\r
+// the details.\r
+//    -- Happy Computing!\r
+//\r
+package com.stevesoft.pat;\r
+import java.util.Hashtable;\r
+\r
+/** The '^' or the '\A' Pattern, matches the start of a string. */\r
+class Start extends Pattern {\r
+    boolean retIsStart;\r
+    Start(boolean b) { retIsStart = b; }\r
+    public int matchInternal(int pos,Pthings pt) {\r
+        if(retIsStart\r
+       && pt.mFlag\r
+       && pos > 0 && pt.src.charAt(pos-1)=='\n')\r
+            return nextMatch(pos,pt);\r
+        if(pos == 0) return nextMatch(pos,pt);\r
+        return -1;\r
+    }\r
+    public String toString() {\r
+        if(retIsStart)\r
+            return "^"+nextString();\r
+        else\r
+            return "\\A"+nextString();\r
+    }\r
+    public patInt maxChars() { return new patInt(0); }\r
+    Pattern clone1(Hashtable h) { return new Start(retIsStart); }\r
+};\r