Correct conflict in #2170

CMakeLists.txt

@@ -1251,8 +1251,9 @@ IF(NOT FOUND_CURL)
 ENDIF(NOT FOUND_CURL)
 
 
-OPTION(ENABLE_LIBXML2 "Link against libxml2 if it is available, use the packaged ezxml parser otherwise." ON)
-SET(XMLPARSER "ezxml (bundled)")
+OPTION(ENABLE_LIBXML2 "Link against libxml2 if it is available, use the packaged tinyxml2 parser otherwise." ON)
+SET(XMLPARSER "tinyxml2 (bundled)")
+
 # see if we have libxml2
 
 IF(ENABLE_LIBXML2)
@@ -1794,6 +1795,7 @@ CHECK_FUNCTION_EXISTS(strlcat   HAVE_STRLCAT)
 CHECK_FUNCTION_EXISTS(strdup  HAVE_STRDUP)
 CHECK_FUNCTION_EXISTS(strndup HAVE_STRNDUP)
 CHECK_FUNCTION_EXISTS(strtoll HAVE_STRTOLL)
+CHECK_FUNCTION_EXISTS(strcasecmp  HAVE_STRCASECMP)
 CHECK_FUNCTION_EXISTS(strtoull  HAVE_STRTOULL)
 CHECK_FUNCTION_EXISTS(mkstemp HAVE_MKSTEMP)
 CHECK_FUNCTION_EXISTS(mktemp HAVE_MKTEMP)

RELEASE_NOTES.md

@@ -8,6 +8,7 @@ This file contains a high-level description of this package's evolution. Release
 ## 4.8.2 - TBD
 
 * [Enhancement] Improve filter support. More specifically (1) add nc_inq_filter_avail to check if a filter is available, (2) add the notion of standard filters, (3) cleanup szip support to fix interaction with NCZarr. See [Github #2245](https://github.com/Unidata/netcdf-c/pull/2245).
+* [Enhancement] Switch to tinyxml2 as the default xml parser implementation. See [Github #2170](https://github.com/Unidata/netcdf-c/pull/2170).
 * [Bug Fix] Require that the type of the variable in nc_def_var_filter is not variable length. See [Github #/2231](https://github.com/Unidata/netcdf-c/pull/2231).
 * [File Change] Apply HDF5 v1.8 format compatibility when writing to previous files, as well as when creating new files.  The superblock version remains at 2 for newly created files.  Full backward read/write compatibility for netCDF-4 is maintained in all cases.  See [Github #2176](https://github.com/Unidata/netcdf-c/issues/2176).
 * [Enhancement] Add ability to set dataset alignment for netcdf-4/HDF5 files. See [Github #2206](https://github.com/Unidata/netcdf-c/pull/2206).

config.h.cmake.in

@@ -299,7 +299,7 @@ are set when opening a binary file on Windows. */
 #cmakedefine HAVE_LIBPNETCDF 1
 
 /* Define to 1 if you have the libxml2 library. */
-#cmakedefine HAVE_LIBXML2 1
+#cmakedefine ENABLE_LIBXML2 1
 
 /* Define to 1 if you have the <locale.h> header file. */
 #cmakedefine HAVE_LOCALE_H 1
@@ -358,12 +358,6 @@ are set when opening a binary file on Windows. */
 /* Define to 1 if you have the <stdlib.h> header file. */
 #cmakedefine HAVE_STDLIB_H 1
 
-/* Define to 1 if you have the `strdup' function. */
-#cmakedefine HAVE_STRDUP 1
-
-/* Define to 1 if you have the `strndup` function. */
-#cmakedefine HAVE_STRNDUP
-
 /* Define to 1 if you have the <strings.h> header file. */
 #cmakedefine HAVE_STRINGS_H 1
 
@@ -379,6 +373,15 @@ are set when opening a binary file on Windows. */
 /* Define to 1 if you have the <libgen.h> header file. */
 #cmakedefine HAVE_LIBGEN_H 1
 
+/* Define to 1 if you have the `strdup' function. */
+#cmakedefine HAVE_STRDUP 1
+
+/* Define to 1 if you have the `strndup` function. */
+#cmakedefine HAVE_STRNDUP
+
+/* Define to 1 if you have the `strcasecmp` function. */
+#cmakedefine HAVE_STRCASECMP
+
 /* Define to 1 if you have the `strlcat' function. */
 #cmakedefine HAVE_STRLCAT 1
 

configure.ac

@@ -523,6 +523,45 @@ fi
 
 CFLAGS="$SAVECFLAGS"
 
+###
+# Libxml2 control block.
+###
+
+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])])
+test "x$enable_libxml2" = xno || enable_libxml2=yes
+AC_MSG_RESULT([$enable_libxml2])
+
+have_libxml2=no
+if test "x$enable_libxml2" = xyes; then
+  # We can optionally use libxml2 for DAP4, if available
+  AC_CHECK_LIB([xml2],[xmlReadMemory],[have_libxml2=yes],[have_libxml2=no])
+  if test "x$have_libxml2" = "xyes" ; then
+      AC_SEARCH_LIBS([xmlReadMemory],[xml2 xml2.dll cygxml2.dll], [],[])
+  fi
+  if test "x$have_libxml2" = xyes; then
+     XML2FLAGS=`xml2-config --cflags`
+     AC_SUBST([XML2FLAGS],${XML2FLAGS})
+     AC_DEFINE([HAVE_LIBXML2], [1], [if true, use libxml2])
+  fi
+fi
+
+if test "x$enable_libxml2" = xyes; then
+XMLPARSER="libxml2"
+else
+XMLPARSER="tinyxml2 (bundled)"
+fi
+
+# Need a condition and subst for this
+AM_CONDITIONAL(ENABLE_LIBXML2, [test "x$enable_libxml2" = xyes])
+AC_SUBST([XMLPARSER],[${XMLPARSER}])
+
+###
+# End Libxml2 block
+###
+
 # --enable-dap => enable-dap4
 enable_dap4=$enable_dap
 AC_MSG_CHECKING([whether dap remote testing should be enabled])
@@ -1094,51 +1133,21 @@ AC_CHECK_FUNCS([strlcat snprintf strcasecmp fileno \
 AC_CHECK_FUNCS([clock_gettime])
 AC_CHECK_TYPES([struct timespec])
 
-# disable dap4 if netcdf-4 is disabled
-#if test "x$enable_netcdf_4" = "xno" ; then
+# disable dap4 if hdf5 is disabled
 if test "x$enable_hdf5" = "xno" ; then
     AC_MSG_WARN([netcdf-4 not enabled; disabling DAP4])
     enable_dap4=no
 fi
 
-if test "x$enable_dap4" = xyes; then
-   AC_DEFINE([ENABLE_DAP4], [1], [if true, build DAP4 Client])
+if test "x$ISOSX" = xyes && "x$have_libxml2" = xno ; then
+  AC_MSG_ERROR([Error: OSX requires libxml2 => --disable-dap4.])
+  enable_dap4=no
 fi
 
-###
-# Libxml2 control block.
-###
-
-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])])
-test "x$disable_libxml2" = xyes && enable_libxml2=no
-AC_MSG_RESULT($enable_libxml2)
-
-AC_SUBST([XMLPARSER],"ezxml")
-if test "x$enable_libxml2" = xyes; then
-# We can optionally use libxml2 for DAP4, if available
-  AC_CHECK_LIB([xml2],[xmlReadMemory],[have_libxml2=yes],[have_libxml2=no])
-  if test "x$have_libxml2" = "xyes" ; then
-      AC_SEARCH_LIBS([xmlReadMemory],[xml2 xml2.dll cygxml2.dll], [],[])
-      AC_SUBST([XMLPARSER],"libxml2")
-  fi
-  if test "x$have_libxml2" = xyes; then
-     XML2FLAGS=`xml2-config --cflags`
-     AC_SUBST([XML2FLAGS],${XML2FLAGS})
-     AC_DEFINE([HAVE_LIBXML2], [1], [if true, use libxml2])
-  fi
-
+if test "x$enable_dap4" = xyes; then
+   AC_DEFINE([ENABLE_DAP4], [1], [if true, build DAP4 Client])
 fi
 
-  # Need a condition for this
-  AM_CONDITIONAL(HAVE_LIBXML2, [test "x$have_libxml2" = xyes])
-
-###
-# End Libxml2 block
-###
-
 # check for useful, but not essential, memio support
 AC_CHECK_FUNCS([memmove getpagesize sysconf])
 
@@ -1257,7 +1266,7 @@ AC_FUNC_ALLOCA
 AC_CHECK_DECLS([isnan, isinf, isfinite],,,[#include <math.h>])
 AC_STRUCT_ST_BLKSIZE
 UD_CHECK_IEEE
-AC_CHECK_TYPES([size_t, ssize_t, schar, uchar, longlong, ushort, uint, int64, uint64, size64_t, ssize64_t, _off64_t, uint64_t])
+AC_CHECK_TYPES([size_t, ssize_t, schar, uchar, longlong, ushort, uint, int64, uint64, size64_t, ssize64_t, _off64_t, uint64_t, ptrdiff_t])
 AC_TYPE_OFF_T
 AC_TYPE_UINTPTR_T
 AC_C_CHAR_UNSIGNED

dap4_test/Makefile.am

@@ -10,6 +10,7 @@ include $(top_srcdir)/lib_flags.am
 #SH_LOG_DRIVER = $(SHELL) $(top_srcdir)/test-driver-verbose
 #LOG_DRIVER = $(SHELL) $(top_srcdir)/test-driver-verbose
 #TEST_LOG_DRIVER = $(SHELL) $(top_srcdir)/test-driver-verbose
+#TESTS_ENVIRONMENT = export SETX=1;
 
 # Note which tests depend on other tests. Necessary for make -j check.
 TEST_EXTENSIONS = .sh

dap4_test/test_data.c

@@ -41,14 +41,16 @@ main(int argc, char** argv)
     }
 
     /* build the url */
-    snprintf(url,sizeof(url),"file://%s#dap4&debug=copy",argv[0]);
-    if(argc >= 3) {
-        strlcat(url,"&substratename=",sizeof(url));
-	strlcat(url,argv[1],sizeof(url));
-    }
+    snprintf(url,sizeof(url),"file://%s#dap4&debug=copy%s%s%s",
+	argv[0],
+        (argc >= 3 ? "&substratename=" : ""),
+        (argc >= 3 ? argv[1] : ""),
 #ifdef DEBUG
-    strlcat(url,"&log",sizeof(url));
+	"&log"
+#else
+	""
 #endif
+	);
 
 #ifdef DEBUG
     fprintf(stderr,"test_data url=%s\n",url);

include/ncconfigure.h

@@ -10,6 +10,10 @@
 #ifndef NCCONFIGURE_H
 #define NCCONFIGURE_H 1
 
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
 #ifdef HAVE_STDLIB_H
 #include <stdlib.h>
 #endif
@@ -41,24 +45,49 @@ typedef SSIZE_T ssize_t;
 #ifndef _WIN32
 #if __STDC__ == 1 /*supposed to be same as -ansi flag */
 
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
 /* WARNING: in some systems, these functions may be defined as macros, so check */
+#ifndef HAVE_STRDUP
 #ifndef strdup
-extern char* strdup(const char*);
+char* strdup(const char*);
+#endif
 #endif
+
+#ifndef HAVE_STRLCAT
 #ifndef strlcat
-extern size_t strlcat(char*,const char*,size_t);
+size_t strlcat(char*,const char*,size_t);
+#endif
 #endif
+
+#ifndef HAVE_SNPRINTF
 #ifndef snprintf
-extern int snprintf(char*, size_t, const char*, ...);
+int snprintf(char*, size_t, const char*, ...);
+#endif
 #endif
+
+#ifndef HAVE_STRCASECMP
 #ifndef strcasecmp
 extern int strcasecmp(const char*, const char*);
 #endif
+#endif
+
+#ifndef HAVE_STRTOLL
 #ifndef strtoll
-extern long long int strtoll(const char*, char**, int);
+long long int strtoll(const char*, char**, int);
 #endif
+#endif
+
+#ifndef HAVE_STRTOULL
 #ifndef strtoull
-extern unsigned long long int strtoull(const char*, char**, int);
+unsigned long long int strtoull(const char*, char**, int);
+#endif
+#endif
+
+#if defined(__cplusplus)
+}
 #endif
 
 #endif /*STDC*/
@@ -145,6 +174,10 @@ typedef unsigned long long uint64_t;
 typedef unsigned long long size64_t;
 #endif
 
+#ifndef HAVE_PTRDIFF_T
+typedef long ptrdiff_t;
+#endif
+
 /* Provide a fixed size alternative to off_t or off64_t */
 typedef long long fileoffset_t;
 

lib_flags.am

@@ -13,11 +13,18 @@ if USE_DAP
 AM_CPPFLAGS += -I${top_srcdir}/oc2
 endif
 
+
 if ENABLE_NCZARR
 AM_CPPFLAGS += -I${top_srcdir}/libnczarr
 endif
 
-if ENABLE_S3_SDK
+
+if ENABLE_S3_SDK 
+AM_LDFLAGS += -lstdc++
+endif
+
+if ! ENABLE_LIBXML2
+# => tinyxml2
 AM_LDFLAGS += -lstdc++
 endif
 

libdap4/d4parser.c

@@ -184,6 +184,7 @@ NCD4_parse(NCD4meta* metadata)
 done:
     if(doc != NULL)
 	ncxml_free(doc);
+    doc = NULL;
     reclaimParser(parser);
     return THROW(ret);
 }

libncxml/CMakeLists.txt

@@ -1,7 +1,7 @@
 IF(HAVE_LIBXML2)
 SET(libncxml_SOURCES ncxml_xml2.c)
 ELSE()
-SET(libncxml_SOURCES ncxml_ezxml.c ezxml.c ezxml.h)
+SET(libncxml_SOURCES ncxml_tinyxml2.cpp tinyxml2.cpp tinyxml2.h)
 ENDIF()
 
 add_library(ncxml OBJECT ${libncxml_SOURCES})

libncxml/Makefile.am

@@ -11,7 +11,7 @@
 
 include $(top_srcdir)/lib_flags.am
 
-if HAVE_LIBXML2
+if ENABLE_LIBXML2
 AM_CPPFLAGS += ${XML2FLAGS}
 endif
 
@@ -20,42 +20,22 @@ noinst_LTLIBRARIES = libncxml.la
 libncxml_la_LIBADD =
 libncxml_la_LDFLAGS =
 
-if HAVE_LIBXML2
+if ENABLE_LIBXML2
 libncxml_la_SOURCES = ncxml_xml2.c
 else
-libncxml_la_SOURCES = ncxml_ezxml.c ezxml.c ezxml.h
+AM_CXXFLAGS = -std=c++11
+libncxml_la_SOURCES = ncxml_tinyxml2.cpp tinyxml2.cpp tinyxml2.h
 endif
 
 EXTRA_DIST = CMakeLists.txt license.txt
 
-# Construct ezxml from latest sources
-REPO = https://downloads.sourceforge.net/project/ezxml/
-EZXML = ezxml-0.8.6.tar.gz
-makelib::
-	echo "WARNING DO NOT RUN THIS since the patches are not in the tar file"
-	exit 1
-	rm -fr ./ezxml.[ch] ./license.txt ./ezxml ./ezxml.c.? ./ezxml.h.?
-	tar -zxf ${EZXML}
-	cat ezxml/ezxml.h > ./ezxml.h
-	sed -i.1 -e '/ezxml_parse_fd/d' ezxml.h
-	sed -i.2 -e '/ezxml_parse_file/d' ezxml.h
-	sed -i.3 -e '/ezxml_parse_fp/d' ezxml.h
-	echo "#define EZXML_NOMMAP 1" > ./ezxml.c
-	cat ezxml/ezxml.c >> ./ezxml.c
-	sed -i.1 -e '/<unistd.h>/d' ezxml.c
-	sed -i.2 -e '/ezxml_parse_fp(FILE/i#if 0' ./ezxml.c
-	sed -i.3 -e '/ezxml_ampencode(const/i#endif //0' ./ezxml.c
-	sed -i.4 -e 's|//\(.*\)|/*\1*/|' ezxml.h
-	sed -i.5 -e 's|//\(.*\)|/*\1*/|' ezxml.c
-	cp ezxml/license.txt .
-	rm -fr ezxml
-
-# Define path to the xml github dir; this value assumes it is in a parallel directory to netcdf-c (YMMV)
-TINYREPO = https://github.com/leethomason/tinyxml2.git
+# Download and massage the tinyxml2 source
+REPO = https://github.com/leethomason/tinyxml2.git
 tinyxml2::
 	rm -fr ./tinyxml2 ./license.txt
-	git clone --depth=1 ${TINYREPO}
-	cat tinyxml2/tinyxml2.h > ./tinyxml2.h
-	cat tinyxml2/tinyxml2.cpp > ./tinyxml2.cpp
+	git clone --depth=1 ${REPO}
 	cat tinyxml2/LICENSE.txt > ./license.txt
-
+	cat tinyxml2/tinyxml2.h > ./tinyxml2.h
+	sed -e 's/__BORLANDC__/__APPLE__/' < tinyxml2/tinyxml2.cpp \
+	| sed -e 's/ptrdiff_t/long/g' > ./tinyxml2.cpp
+	rm -fr tinyxml2