Update tinyxml and allow its use under OS/X.

re: PR Unidata#2710 Apparently (see above PR) tinyxml2 now works under OS/X. So this PR is a follow on to the above PR. It modifies our OS/X github action to test tinyxml2 under OS/X.
DennisHeimbigner · Jun 13, 2023 · 8887b5b · 8887b5b
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commit 8887b5b
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Showing 5 changed files with 32 additions and 31 deletions.
diff --git a/.github/workflows/run_tests_osx.yml b/.github/workflows/run_tests_osx.yml
@@ -299,7 +299,7 @@ jobs:
 
       - name: Configure
         shell: bash -l {0}
-        run: CFLAGS=${CFLAGS} LDFLAGS=${LDFLAGS} LD_LIBRARY_PATH=${LD_LIBRARY_PATH} ./configure --enable-hdf5 --enable-dap --disable-dap-remote-tests
+        run: CFLAGS=${CFLAGS} LDFLAGS=${LDFLAGS} LD_LIBRARY_PATH=${LD_LIBRARY_PATH} ./configure --enable-hdf5 --enable-dap --disable-dap-remote-tests --disable-xml2
         if: ${{ success() }}
 
       - name: Look at config.log if error
@@ -374,7 +374,7 @@ jobs:
         run: |
           mkdir build
           cd build
-          LD_LIBRARY_PATH=${LD_LIBRARY_PATH} cmake .. -DCMAKE_PREFIX_PATH=${CMAKE_PREFIX_PATH} -DENABLE_DAP=TRUE -DENABLE_HDF5=TRUE -DENABLE_NCZARR=TRUE -D ENABLE_DAP_LONG_TESTS=TRUE
+          LD_LIBRARY_PATH=${LD_LIBRARY_PATH} cmake .. -DCMAKE_PREFIX_PATH=${CMAKE_PREFIX_PATH} -DENABLE_DAP=TRUE -DENABLE_HDF5=TRUE -DENABLE_NCZARR=TRUE -D ENABLE_DAP_LONG_TESTS=TRUE -DENABLE_XML2=FALSE
 
       - name: Print Summary
         shell: bash -l {0}

diff --git a/.github/workflows/run_tests_ubuntu.yml b/.github/workflows/run_tests_ubuntu.yml
@@ -167,7 +167,7 @@ jobs:
 
       - name: Configure
         shell: bash -l {0}
-        run: CFLAGS=${CFLAGS} LDFLAGS=${LDFLAGS} LD_LIBRARY_PATH=${LD_LIBRARY_PATH} ./configure --enable-hdf5 --enable-dap --disable-dap-remote-tests  --enable-doxygen  --enable-external-server-tests
+        run: CFLAGS=${CFLAGS} LDFLAGS=${LDFLAGS} LD_LIBRARY_PATH=${LD_LIBRARY_PATH} ./configure --enable-hdf5 --enable-dap --disable-dap-remote-tests  --enable-doxygen  --enable-external-server-tests --disable-xml2
         if: ${{ success() }}
 
       - name: Look at config.log if error
@@ -327,7 +327,7 @@ jobs:
         run: |
           mkdir build
           cd build
-          LD_LIBRARY_PATH=${LD_LIBRARY_PATH} cmake .. -DCMAKE_PREFIX_PATH=${CMAKE_PREFIX_PATH} -DENABLE_DAP=TRUE -DENABLE_HDF5=TRUE -DENABLE_NCZARR=TRUE -D ENABLE_DAP_LONG_TESTS=TRUE
+          LD_LIBRARY_PATH=${LD_LIBRARY_PATH} cmake .. -DCMAKE_PREFIX_PATH=${CMAKE_PREFIX_PATH} -DENABLE_DAP=TRUE -DENABLE_HDF5=TRUE -DENABLE_NCZARR=TRUE -DENABLE_DAP_LONG_TESTS=TRUE -DENABLE_XML2=FALSE
 
       - name: Print Summary
         shell: bash -l {0}

diff --git a/configure.ac b/configure.ac
@@ -565,18 +565,17 @@ CFLAGS="$SAVECFLAGS"
 AC_MSG_CHECKING([whether to search for and use external libxml2])
 AC_ARG_ENABLE([libxml2],
               [AS_HELP_STRING([--disable-libxml2],
-                              [disable detection and use of libxml2 in favor of the bundled ezxml interpreter])])
+                              [disable detection and use of libxml2 in favor of the bundled xml parser])])
 test "x$enable_libxml2" = xno || enable_libxml2=yes
 AC_MSG_RESULT([$enable_libxml2])
 
-
+# We can optionally use libxml2 for DAP4 and nch5comms, if enabled
 have_libxml2=no
 if test "x$enable_libxml2" = xyes; then
    AC_CHECK_PROGS([NC_XML2_CONFIG], [xml2-config])
    if test -z "$NC_XML2_CONFIG"; then
       AC_MSG_ERROR([Cannot find xml2-config utility. Either install the libxml2 development package, or re-run configure with --disable-libxml2 to use the bundled xml2 parser])
    fi
-  # We can optionally use libxml2 for DAP4 and nch5comms, if enabled
   AC_CHECK_LIB([xml2],[xmlReadMemory],[have_libxml2=yes],[have_libxml2=no])
   if test "x$have_libxml2" = "xyes" ; then
       AC_SEARCH_LIBS([xmlReadMemory],[xml2 xml2.dll cygxml2.dll], [],[])
@@ -1256,11 +1255,6 @@ if test "x$enable_hdf5" = "xno" ; then
     enable_dap4=no
 fi
 
-if test "x$ISOSX" = xyes && test "x$have_libxml2" = xno && test "x$enable_dap4" = xyes ; then
-  AC_MSG_WARN([OSX requires libxml2 for DAP4 support; disabling DAP4])
-  enable_dap4=no
-fi
-
 if test "x$enable_dap4" = xyes; then
    AC_DEFINE([ENABLE_DAP4], [1], [if true, build DAP4 Client])
 fi

diff --git a/libncxml/tinyxml2.cpp b/libncxml/tinyxml2.cpp
@@ -103,10 +103,17 @@ distribution.
 #if defined(_WIN64)
 	#define TIXML_FSEEK _fseeki64
 	#define TIXML_FTELL _ftelli64
-#elif defined(__APPLE__) || defined(__FreeBSD__) || defined(__OpenBSD__) \
-	|| defined(__NetBSD__) || defined(__DragonFly__) || defined(__ANDROID__)
+#elif defined(__APPLE__) || defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__NetBSD__) || defined(__DragonFly__) || (__CYGWIN__)
 	#define TIXML_FSEEK fseeko
 	#define TIXML_FTELL ftello
+#elif defined(__ANDROID__) 
+    #if __ANDROID_API__ > 24
+        #define TIXML_FSEEK fseeko64
+        #define TIXML_FTELL ftello64
+    #else
+        #define TIXML_FSEEK fseeko
+        #define TIXML_FTELL ftello
+    #endif
 #elif defined(__unix__) && defined(__x86_64__)
 	#define TIXML_FSEEK fseeko64
 	#define TIXML_FTELL ftello64
@@ -1077,7 +1084,7 @@ char* XMLNode::ParseDeep( char* p, StrPair* parentEndTag, int* curLineNumPtr )
         StrPair endTag;
         p = node->ParseDeep( p, &endTag, curLineNumPtr );
         if ( !p ) {
-            DeleteNode( node );
+            _document->DeleteNode( node );
             if ( !_document->Error() ) {
                 _document->SetError( XML_ERROR_PARSING, initialLineNum, 0);
             }
@@ -1110,7 +1117,7 @@ char* XMLNode::ParseDeep( char* p, StrPair* parentEndTag, int* curLineNumPtr )
             }
             if ( !wellLocated ) {
                 _document->SetError( XML_ERROR_PARSING_DECLARATION, initialLineNum, "XMLDeclaration value=%s", decl->Value());
-                DeleteNode( node );
+                _document->DeleteNode( node );
                 break;
             }
         }
@@ -1145,7 +1152,7 @@ char* XMLNode::ParseDeep( char* p, StrPair* parentEndTag, int* curLineNumPtr )
             }
             if ( mismatch ) {
                 _document->SetError( XML_ERROR_MISMATCHED_ELEMENT, initialLineNum, "XMLElement name=%s", ele->Name());
-                DeleteNode( node );
+                _document->DeleteNode( node );
                 break;
             }
         }
@@ -1777,11 +1784,11 @@ XMLError XMLElement::QueryInt64Text(int64_t* ival) const
 }
 
 
-XMLError XMLElement::QueryUnsigned64Text(uint64_t* ival) const
+XMLError XMLElement::QueryUnsigned64Text(uint64_t* uval) const
 {
     if(FirstChild() && FirstChild()->ToText()) {
         const char* t = FirstChild()->Value();
-        if(XMLUtil::ToUnsigned64(t, ival)) {
+        if(XMLUtil::ToUnsigned64(t, uval)) {
             return XML_SUCCESS;
         }
         return XML_CAN_NOT_CONVERT_TEXT;
@@ -2413,21 +2420,21 @@ XMLError XMLDocument::SaveFile( FILE* fp, bool compact )
 }
 
 
-XMLError XMLDocument::Parse( const char* p, size_t len )
+XMLError XMLDocument::Parse( const char* xml, size_t nBytes )
 {
     Clear();
 
-    if ( len == 0 || !p || !*p ) {
+    if ( nBytes == 0 || !xml || !*xml ) {
         SetError( XML_ERROR_EMPTY_DOCUMENT, 0, 0 );
         return _errorID;
     }
-    if ( len == static_cast<size_t>(-1) ) {
-        len = strlen( p );
+    if ( nBytes == static_cast<size_t>(-1) ) {
+        nBytes = strlen( xml );
     }
     TIXMLASSERT( _charBuffer == 0 );
-    _charBuffer = new char[ len+1 ];
-    memcpy( _charBuffer, p, len );
-    _charBuffer[len] = 0;
+    _charBuffer = new char[ nBytes+1 ];
+    memcpy( _charBuffer, xml, nBytes );
+    _charBuffer[nBytes] = 0;
 
     Parse();
     if ( Error() ) {

diff --git a/libncxml/tinyxml2.h b/libncxml/tinyxml2.h
@@ -83,16 +83,16 @@ distribution.
 #if defined(TINYXML2_DEBUG)
 #   if defined(_MSC_VER)
 #       // "(void)0," is for suppressing C4127 warning in "assert(false)", "assert(true)" and the like
-#       define TIXMLASSERT( x )           if ( !((void)0,(x))) { __debugbreak(); }
+#       define TIXMLASSERT( x )           do { if ( !((void)0,(x))) { __debugbreak(); } } while(false)
 #   elif defined (ANDROID_NDK)
 #       include <android/log.h>
-#       define TIXMLASSERT( x )           if ( !(x)) { __android_log_assert( "assert", "grinliz", "ASSERT in '%s' at %d.", __FILE__, __LINE__ ); }
+#       define TIXMLASSERT( x )           do { if ( !(x)) { __android_log_assert( "assert", "grinliz", "ASSERT in '%s' at %d.", __FILE__, __LINE__ ); } } while(false)
 #   else
 #       include <assert.h>
 #       define TIXMLASSERT                assert
 #   endif
 #else
-#   define TIXMLASSERT( x )               {}
+#   define TIXMLASSERT( x )               do {} while(false)
 #endif
 #endif
 
@@ -112,7 +112,7 @@ static const int TIXML2_PATCH_VERSION = 0;
 // system, and the capacity of the stack. On the other hand, it's a trivial
 // attack that can result from ill, malicious, or even correctly formed XML,
 // so there needs to be a limit in place.
-static const int TINYXML2_MAX_ELEMENT_DEPTH = 100;
+static const int TINYXML2_MAX_ELEMENT_DEPTH = 500;
 
 namespace tinyxml2
 {
@@ -375,7 +375,7 @@ class MemPoolT : public MemPool
     virtual void* Alloc() {
         if ( !_root ) {
             // Need a new block.
-            Block* block = new Block();
+            Block* block = new Block;
             _blockPtrs.Push( block );
 
             Item* blockItems = block->items;