From 567c04276158059089d64e0e9fd5b9c7e1b8d7ba Mon Sep 17 00:00:00 2001
From: Binh-Minh Ribler <bmribler@hdfgroup.org>
Date: Thu, 16 May 2002 17:41:00 -0500
Subject: [svn-r5428] Purpose:     New Feature - per library change

Description:
    Added the new member function getMemberIndex to classes EnumType and
    CompType to match the new C API H5Tget_member_index.  Given the name
    of a member of an enumeration or compound datatype, this new function
    queries the index of the member.

Platforms:
    SunOS 5.7 (arabica)
    Linux 6.2 (eirene)
---
 c++/src/H5CompType.cpp | 46 ++++++++++++++++++++++++++++++++++++++++++++--
 c++/src/H5CompType.h   |  4 ++++
 c++/src/H5EnumType.cpp | 29 +++++++++++++++++++++++++++++
 c++/src/H5EnumType.h   |  4 ++++
 4 files changed, 81 insertions(+), 2 deletions(-)

diff --git a/c++/src/H5CompType.cpp b/c++/src/H5CompType.cpp
index 6fdba0b..3816751 100644
--- a/c++/src/H5CompType.cpp
+++ b/c++/src/H5CompType.cpp
@@ -68,11 +68,53 @@ string CompType::getMemberName( int member_num ) const
     return( member_name ); // return the member name string
 }
 
-// Retrieves the offset of a member of a compound datatype. 
+/*-------------------------------------------------------------------------
+ * Function:    getMemberIndex
+ *
+ * Purpose:     Returns the index of a member in a compound data type.  
+ *              Members are stored in no particular order with numbers 0 
+ *              through N-1, where N is the value returned by the member 
+ *              function getNmembers.
+ *
+ * Return:      Success:	index of the member if exists.
+ *              Failure:	DataTypeIException
+ *
+ * BMR - May 16, 2002
+ *-------------------------------------------------------------------------
+ */
+int CompType::getMemberIndex(const char* name) const
+{
+   int member_index = H5Tget_member_index(id, name);
+   if( member_index < 0 )
+   {
+      throw DataTypeIException("CompType::getMemberIndex", 
+		"H5Tget_member_index returns negative value");
+   }
+   return( member_index );
+}
+int CompType::getMemberIndex(const string& name) const
+{
+   return(getMemberIndex(name.c_str()));
+}
+
+/*-------------------------------------------------------------------------
+ * Function:    getMemberOffset
+ *
+ * Purpose:     Returns the byte offset of the beginning of a member with
+ *              respect to the beginning of the compound data type datum.
+ *              Members are stored in no particular order with numbers 0 
+ *              through N-1, where N is the value returned by the member 
+ *              function getNmembers.
+ *
+ * Return:      Success:        Byte offset.
+ *              Failure:        Quincey: for now, 0 is not a failure
+ *
+ * BMR - 2000
+ *-------------------------------------------------------------------------
+ */
 size_t CompType::getMemberOffset( int member_num ) const
 {
    size_t offset = H5Tget_member_offset( id, member_num );
-   // Q. said: for now, 0 is not a failure
    //if( offset == 0 )
    //{
       //throw DataTypeIException("CompType::getMemberOffset",
diff --git a/c++/src/H5CompType.h b/c++/src/H5CompType.h
index bca5722..42cd913 100644
--- a/c++/src/H5CompType.h
+++ b/c++/src/H5CompType.h
@@ -23,6 +23,10 @@ class __DLLCPP__ CompType : public DataType {
 	// Returns the name of a member of this compound datatype. 
 	string getMemberName( int member_num ) const;
 
+	// Returns the index of a member in this compound data type.
+	int getMemberIndex(const char* name) const;
+	int getMemberIndex(const string& name) const;
+
 	// Returns the offset of a member of this compound datatype. 
 	size_t getMemberOffset( int memb_no ) const;
 
diff --git a/c++/src/H5EnumType.cpp b/c++/src/H5EnumType.cpp
index 5bf9ece..f10ff18 100644
--- a/c++/src/H5EnumType.cpp
+++ b/c++/src/H5EnumType.cpp
@@ -108,6 +108,35 @@ void EnumType::valueOf( const char* name, void *value ) const
    }
 }
 
+/*-------------------------------------------------------------------------
+ * Function:    getMemberIndex
+ *
+ * Purpose:     Returns the index of a member in an enumeration data type.
+ *              Members are stored in no particular order with numbers 0
+ *              through N-1, where N is the value returned by the member
+ *              function getNmembers.
+ *
+ * Return:      Success:	index of the member if exists.
+ *              Failure:	DataTypeIException
+ *
+ * BMR - May 16, 2002
+ *-------------------------------------------------------------------------
+ */
+int EnumType::getMemberIndex(const char *name) const
+{
+   int member_index = H5Tget_member_index(id, name);
+   if( member_index < 0 )
+   {
+      throw DataTypeIException("EnumType::getMemberIndex",
+                "H5Tget_member_index returns negative value");
+   }
+   return( member_index );
+}
+int EnumType::getMemberIndex(const string& name) const
+{
+    return(EnumType::getMemberIndex(name.c_str()));
+}
+
 // Retrieves the value of a member in this enumeration datatype, given the 
 // member's index.
 void EnumType::getMemberValue( int memb_no, void *value ) const
diff --git a/c++/src/H5EnumType.h b/c++/src/H5EnumType.h
index b003e43..db4bbbb 100644
--- a/c++/src/H5EnumType.h
+++ b/c++/src/H5EnumType.h
@@ -41,6 +41,10 @@ class __DLLCPP__ EnumType : public DataType {
 	void valueOf( const string& name, void *value ) const;
 	void valueOf( const char* name, void *value ) const;
 
+	// Returns the index of a member in this enumeration data type.
+	int getMemberIndex(const char* name) const;
+	int getMemberIndex(const string& name) const;
+
 	// Returns the value of an enumeration datatype member
 	void getMemberValue( int memb_no, void *value ) const;
 
-- 
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