remove libasn1c dependency and use asn1c without libasn1c
TODO: re-introduce talloc integration for asn1 runtime
Change-Id: I2140509c5359727f304470249be2a726b9a8deb1
diff --git a/include/osmocom/rspro/xer_support.h b/include/osmocom/rspro/xer_support.h
new file mode 100644
index 0000000..8b01944
--- /dev/null
+++ b/include/osmocom/rspro/xer_support.h
@@ -0,0 +1,55 @@
+/*
+ * Copyright (c) 2003, 2004 X/IO Labs, xiolabs.com.
+ * Copyright (c) 2003, 2004 Lev Walkin <vlm@lionet.info>. All rights reserved.
+ * Redistribution and modifications are permitted subject to BSD license.
+ */
+#ifndef _XER_SUPPORT_H_
+#define _XER_SUPPORT_H_
+
+#include <asn_system.h> /* Platform-specific types */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ * Types of data transferred to the application.
+ */
+typedef enum {
+ PXML_TEXT, /* Plain text between XML tags. */
+ PXML_TAG, /* A tag, starting with '<'. */
+ PXML_COMMENT, /* An XML comment, including "<!--" and "-->". */
+ /*
+ * The following chunk types are reported if the chunk
+ * terminates the specified XML element.
+ */
+ PXML_TAG_END, /* Tag ended */
+ PXML_COMMENT_END /* Comment ended */
+} pxml_chunk_type_e;
+
+/*
+ * Callback function that is called by the parser when parsed data is
+ * available. The _opaque is the pointer to a field containing opaque user
+ * data specified in pxml_create() call. The chunk type is _type and the text
+ * data is the piece of buffer identified by _bufid (as supplied to
+ * pxml_feed() call) starting at offset _offset and of _size bytes size.
+ * The chunk is NOT '\0'-terminated.
+ */
+typedef int (pxml_callback_f)(pxml_chunk_type_e _type,
+ const void *_chunk_data, size_t _chunk_size, void *_key);
+
+/*
+ * Parse the given buffer as it were a chunk of XML data.
+ * Invoke the specified callback each time the meaninful data is found.
+ * This function returns number of bytes consumed from the bufer.
+ * It will always be lesser than or equal to the specified _size.
+ * The next invocation of this function must account the difference.
+ */
+ssize_t pxml_parse(int *_stateContext, const void *_buf, size_t _size,
+ pxml_callback_f *cb, void *_key);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _XER_SUPPORT_H_ */