From 51a118f1ef0c524aef823b42bca3bf5a4ff8ae59 Mon Sep 17 00:00:00 2001
From: Tiger Wang <ziwei.tiger@hotmail.co.uk>
Date: Sat, 9 May 2015 00:00:13 +0100
Subject: Updated luaexpat

---
 lib/luaexpat/lxplib.c | 37 ++++++++++++++++++++++++++++++-------
 lib/luaexpat/lxplib.h |  1 +
 2 files changed, 31 insertions(+), 7 deletions(-)

diff --git a/lib/luaexpat/lxplib.c b/lib/luaexpat/lxplib.c
index 1a36104a8..ff62ed83e 100644
--- a/lib/luaexpat/lxplib.c
+++ b/lib/luaexpat/lxplib.c
@@ -38,6 +38,7 @@ struct lxp_userdata {
   int tableref;  /* table with callbacks for this parser */
   enum XPState state;
   luaL_Buffer *b;  /* to concatenate sequences of cdata pieces */
+  int bufferCharData; /* whether to buffer cdata pieces */
 };
 
 typedef struct lxp_userdata lxp_userdata;
@@ -152,8 +153,13 @@ static void f_CharData (void *ud, const char *s, int len) {
   lxp_userdata *xpu = (lxp_userdata *)ud;
   if (xpu->state == XPSok) {
     if (getHandle(xpu, CharDataKey) == 0) return;  /* no handle */
-    xpu->state = XPSstring;
-    luaL_buffinit(xpu->L, xpu->b);
+    if(xpu->bufferCharData != 0) {
+      xpu->state = XPSstring;
+      luaL_buffinit(xpu->L, xpu->b);
+    } else {
+      lua_pushlstring(xpu->L, s, len);
+      docall(xpu, 1, 0);
+    }
   }
   if (xpu->state == XPSstring)
     luaL_addlstring(xpu->b, s, len);
@@ -326,6 +332,16 @@ static void f_StartDoctypeDecl (void *ud, const XML_Char *doctypeName,
   docall(xpu, 4, 0);
 }
 
+static void f_XmlDecl (void *ud, const XML_Char *version,
+                                 const XML_Char *encoding,
+                                 int standalone) {
+  lxp_userdata *xpu = (lxp_userdata *)ud;
+  if (getHandle(xpu, XmlDeclKey) == 0) return;  /* no handle */
+  lua_pushstring(xpu->L, version);
+  lua_pushstring(xpu->L, encoding);
+  lua_pushboolean(xpu->L, standalone);
+  docall(xpu, 3, 0);
+}
 /* }====================================================== */
 
 
@@ -346,7 +362,7 @@ static void checkcallbacks (lua_State *L) {
     "Default", "DefaultExpand", "StartElement", "EndElement",
     "ExternalEntityRef", "StartNamespaceDecl", "EndNamespaceDecl",
     "NotationDecl", "NotStandalone", "ProcessingInstruction",
-    "UnparsedEntityDecl", "StartDoctypeDecl", NULL};
+    "UnparsedEntityDecl", "StartDoctypeDecl", "XmlDecl", NULL};
   if (hasfield(L, "_nonstrict")) return;
   lua_pushnil(L);
   while (lua_next(L, 1)) {
@@ -364,8 +380,10 @@ static void checkcallbacks (lua_State *L) {
 
 static int lxp_make_parser (lua_State *L) {
   XML_Parser p;
+  int bufferCharData = (lua_type(L, 3) != LUA_TBOOLEAN) || (lua_toboolean(L, 3) != 0);
   char sep = *luaL_optstring(L, 2, "");
   lxp_userdata *xpu = createlxp(L);
+  xpu->bufferCharData = bufferCharData;
   p = xpu->parser = (sep == '\0') ? XML_ParserCreate(NULL) :
                                     XML_ParserCreateNS(NULL, sep);
   if (!p)
@@ -401,6 +419,8 @@ static int lxp_make_parser (lua_State *L) {
     XML_SetUnparsedEntityDeclHandler(p, f_UnparsedEntityDecl);
   if (hasfield(L, StartDoctypeDeclKey))
     XML_SetStartDoctypeDeclHandler(p, f_StartDoctypeDecl);
+  if (hasfield(L, XmlDeclKey))
+    XML_SetXmlDeclHandler(p, f_XmlDecl);
   return 1;
 }
 
@@ -524,11 +544,18 @@ static int lxp_stop (lua_State *L) {
 #define luaL_Reg luaL_reg
 #endif
 
+static int lxp_getcurrentbytecount (lua_State* L) {
+  lxp_userdata *xpu = checkparser(L, 1);
+  lua_pushinteger(L, XML_GetCurrentByteCount(xpu->parser));
+  return 1;
+}
+
 static const struct luaL_Reg lxp_meths[] = {
   {"parse", lxp_parse},
   {"close", lxp_close},
   {"__gc", parser_gc},
   {"pos", lxp_pos},
+  {"getcurrentbytecount", lxp_getcurrentbytecount},
   {"setencoding", lxp_setencoding},
   {"getcallbacks", getcallbacks},
   {"getbase", getbase},
@@ -588,12 +615,8 @@ int luaopen_lxp (lua_State *L) {
 	luaL_setfuncs (L, lxp_meths, 0);
 	lua_pop (L, 1); /* remove metatable */
 
-	// _X 2013_04_09: Modified to allow embedding
-	luaL_openlib (L, "lxp", lxp_funcs, 0);
-	/*
 	lua_newtable (L);
 	luaL_setfuncs (L, lxp_funcs, 0);
-	*/
 	set_info (L);
 	return 1;
 }
diff --git a/lib/luaexpat/lxplib.h b/lib/luaexpat/lxplib.h
index 9c0be4f78..4c7084c46 100644
--- a/lib/luaexpat/lxplib.h
+++ b/lib/luaexpat/lxplib.h
@@ -20,5 +20,6 @@
 #define ProcessingInstructionKey	"ProcessingInstruction"
 #define UnparsedEntityDeclKey		"UnparsedEntityDecl"
 #define StartDoctypeDeclKey		"StartDoctypeDecl"
+#define XmlDeclKey			"XmlDecl"
 
 int luaopen_lxp (lua_State *L);
-- 
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