[libxml2]Add libxml2 library

libxml2/include/private/io.h

@@ -0,0 +1,61 @@
+#ifndef XML_IO_H_PRIVATE__
+#define XML_IO_H_PRIVATE__
+
+#include <libxml/encoding.h>
+#include <libxml/tree.h>
+#include <libxml/xmlversion.h>
+
+#ifndef SIZE_MAX
+  #define SIZE_MAX ((size_t)(-1))
+#endif
+
+/*
+ * Initial buffer size should include
+ *
+ * - MINLEN = 4000 (I/O chunk size)
+ * - INPUT_CHUNK = 250 (parser prefetch)
+ * - LINE_LEN = 80 (shrink limit for error messages)
+ * - some amount for unshrunken content.
+ */
+#define XML_IO_BUFFER_SIZE 6000
+
+#define XML_ESCAPE_ATTR             (1u << 0)
+#define XML_ESCAPE_NON_ASCII        (1u << 1)
+#define XML_ESCAPE_HTML             (1u << 2)
+#define XML_ESCAPE_QUOT             (1u << 3)
+
+XML_HIDDEN xmlChar *
+xmlEscapeText(const xmlChar *text, int flags);
+#ifdef LIBXML_OUTPUT_ENABLED
+XML_HIDDEN void
+xmlSerializeText(xmlOutputBuffer *buf, const xmlChar *string, size_t maxSize,
+                 unsigned flags);
+#endif
+
+XML_HIDDEN void
+xmlInitIOCallbacks(void);
+
+XML_HIDDEN int
+xmlNoNetExists(const char *filename);
+
+XML_HIDDEN xmlParserErrors
+xmlParserInputBufferCreateUrl(const char *URI, xmlCharEncoding enc,
+                              xmlParserInputFlags flags,
+                              xmlParserInputBuffer **out);
+
+XML_HIDDEN xmlParserInputBuffer *
+xmlNewInputBufferString(const char *str, xmlParserInputFlags flags);
+XML_HIDDEN xmlParserInputBuffer *
+xmlNewInputBufferMemory(const void *mem, size_t size,
+                        xmlParserInputFlags flags, xmlCharEncoding enc);
+
+XML_HIDDEN xmlParserErrors
+xmlInputFromFd(xmlParserInputBuffer *buf, int fd, xmlParserInputFlags flags);
+
+#ifdef LIBXML_OUTPUT_ENABLED
+XML_HIDDEN void
+xmlOutputBufferWriteQuotedString(xmlOutputBuffer *buf,
+                                 const xmlChar *string);
+#endif
+
+#endif /* XML_IO_H_PRIVATE__ */