Add the strip encoder patch from Anatoly Techtonik #2130016

git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/trunk@10896 626c5289-ae23-0410-ae9c-e8d60b6d4f22

CHANGES.current

@@ -3,6 +3,20 @@
 Version 1.3.37 (in progress)
 ============================
 
+2008-11-01: wsfulton
+            Add the strip encoder patch from Anatoly Techtonik #2130016. This enables an 
+            easy way to rename symbols by stripping a commonly used prefix in all the
+            function/struct names. It works in the same way as the other encoders, such as
+            title, lower, command etc outlined in CHANGES file dated 12/30/2005. Example
+            below will rename wxAnotherWidget to AnotherWidget and wxDoSomething to 
+            DoSomething:
+
+              %rename("%(strip:[wx])s") ""; 
+
+              struct wxAnotherWidget {
+                  void wxDoSomething();
+              };
+
 2008-09-26: mutandiz
 	    [allegrocl]
 	    Lots of test-suite work.

Examples/test-suite/common.mk

@@ -260,6 +260,7 @@ CPP_TEST_CASES += \
 	rename3 \
 	rename4 \
 	rename_scope \
+	rename_strip_encoder \
 	restrict_cplusplus \
 	return_const_value \
 	return_value_scope \

Examples/test-suite/python/rename_strip_encoder_runme.py

@@ -0,0 +1,6 @@
+from rename_strip_encoder import *
+
+s = SomeWidget()
+a = AnotherWidget()
+a.DoSomething()
+

Examples/test-suite/rename_strip_encoder.i

@@ -0,0 +1,16 @@
+%module rename_strip_encoder
+
+// strip the wx prefix from all identifiers
+%rename("%(strip:[wx])s") ""; 
+
+%inline %{
+
+class wxSomeWidget {
+};
+
+struct wxAnotherWidget {
+    void wxDoSomething() {}
+};
+
+
+%}

Source/Swig/misc.c

@@ -926,6 +926,37 @@ String *Swig_string_command(String *s) {
 }
 
 
+/* -----------------------------------------------------------------------------
+ * Swig_string_strip()
+ *
+ * Strip given prefix from identifiers 
+ *
+ *  Printf(stderr,"%(strip:[wx])s","wxHello") -> Hello
+ * ----------------------------------------------------------------------------- */
+
+String *Swig_string_strip(String *s) {
+  String *ns;
+  if (!Len(s)) {
+    ns = NewString(s);
+  } else {
+    const char *cs = Char(s);
+    const char *ce = Strchr(cs, ']');
+    if (*cs != '[' || ce == NULL) {
+      ns = NewString(s);
+    } else {
+      String *fmt = NewStringf("%%.%ds", ce-cs-1);
+      String *prefix = NewStringf(fmt, cs+1);
+      if (0 == Strncmp(ce+1, prefix, Len(prefix))) {
+        ns = NewString(ce+1+Len(prefix));
+      } else {
+        ns = NewString(ce+1);
+      }
+    }
+  }
+  return ns;
+}
+
+
 /* -----------------------------------------------------------------------------
  * Swig_string_rxspencer()
  *
@@ -1053,6 +1084,7 @@ void Swig_init() {
   DohEncoding("command", Swig_string_command);
   DohEncoding("rxspencer", Swig_string_rxspencer);
   DohEncoding("schemify", Swig_string_schemify);
+  DohEncoding("strip", Swig_string_strip);
 
   /* aliases for the case encoders */
   DohEncoding("uppercase", Swig_string_upper);