Initial attempt at PtexMetaData find_key/get_key

Signed-off-by: matt rice <[email protected]>

ptex-sys/src/lib.rs

@@ -546,6 +546,18 @@ pub mod ffi {
         #[namespace = "Ptex::sys"]
         unsafe fn ptexmetadata_num_keys(metadata: *const PtexMetaData) -> i32;
 
+        /// Get the key, and meta data type for a given `index` from a PtexMetaData pointer.
+        /// # Safety
+        /// Must only be called on valid PtexMetaData pointers.
+        #[namespace = "Ptex::sys"]
+        unsafe fn ptexmetadata_get_key(metadata: *const PtexMetaData, index: i32, key: *mut *const c_char, typ: *mut MetaDataType);
+
+        /// Find the index, and meta data type for a given `key` from a PtexMetaData pointer.
+        /// Returning `true` if the key is found and `false` otherwise.
+        /// # Safety
+        /// Must only be called on valid PtexMetaData pointers.
+        #[namespace = "Ptex::sys"]
+        unsafe fn ptexmetadata_find_key(metadata: *const PtexMetaData, key: *const c_char, index: *mut i32, typ: *mut MetaDataType) -> bool;
         /// Release a PtexMetaData
         /// # Safety
         /// This function must be called with a valid PtexMetaData pointer.

ptex-sys/src/ptex-sys.h

@@ -423,6 +423,20 @@ inline int32_t ptexmetadata_num_keys(PtexMetaData *metadata)  {
     return (int32_t) metadata->numKeys();
 }
 
+inline void ptexmetadata_get_key(PtexMetaData *metadata, int index, const char *& key, MetaDataType& typ) {
+    if (metadata) {
+        metadata->getKey(index, key, typ);
+    }
+}
+
+inline bool ptexmetadata_find_key(PtexMetaData *metadata, const char *key, int &index, MetaDataType& typ) {
+    if (metadata) {
+        return metadata->findKey(key, index, typ);
+    } else {
+	return false;
+    }
+}
+
 inline void ptexmetadata_release(PtexMetaData *metadata)  {
     if (metadata) {
         metadata->release();