Use mat_snprintf

Makefile.am

@@ -70,10 +70,10 @@ pkgconfig_DATA = matio.pc
 $(pkgconfig_DATA): config.status
 
 if NEED_GETOPT
-GETOPT=getopt
+    GETOPT = getopt
 endif
 
-SUBDIRS = src $(GETOPT) tools test documentation
+SUBDIRS = snprintf src $(GETOPT) tools test documentation
 
 dosubst = sed -e 's,[@]PACKAGE[@],$(PACKAGE),g' \
               -e 's,[@]VERSION[@],$(VERSION),g' \

cmake/src.cmake

@@ -20,8 +20,8 @@ set(MATIO_SOURCES
     ${PROJECT_SOURCE_DIR}/src/matvar_struct.c
     ${PROJECT_SOURCE_DIR}/src/mat4.c
     ${PROJECT_SOURCE_DIR}/src/mat5.c
-    ${PROJECT_SOURCE_DIR}/src/snprintf.c
     ${PROJECT_SOURCE_DIR}/src/read_data.c
+    ${PROJECT_SOURCE_DIR}/snprintf/snprintf.c
     ${PROJECT_SOURCE_DIR}/src/mat5.h
     ${PROJECT_SOURCE_DIR}/src/mat73.h
     ${PROJECT_SOURCE_DIR}/src/matio_private.h

cmake/tools.cmake

@@ -1,4 +1,4 @@
-add_executable(matdump ${PROJECT_SOURCE_DIR}/tools/matdump.c )
+add_executable(matdump ${PROJECT_SOURCE_DIR}/tools/matdump.c ${PROJECT_SOURCE_DIR}/src/snprintf.c)
 target_link_libraries(matdump matio)
 if(NOT HAVE_GETOPT)
     target_link_libraries(matdump getopt)

configure.ac

@@ -385,6 +385,7 @@ AC_SUBST([AUTOTEST], ['$(AUTOM4TE) --language=Autotest'])
 
 AC_CONFIG_FILES([Makefile \
                  matio.pc \
+                 snprintf/Makefile \
                  src/Makefile \
                  getopt/Makefile \
                  tools/Makefile \

snprintf/Makefile.am

@@ -0,0 +1,30 @@
+## Makefile.am -- Process this file with automake to produce Makefile.in
+##
+## Copyright (c) 2015-2023, The matio contributors
+## Copyright (c) 2005-2014, Christopher C. Hulbert
+## All rights reserved.
+##
+## Redistribution and use in source and binary forms, with or without
+## modification, are permitted provided that the following conditions are met:
+##
+## 1. Redistributions of source code must retain the above copyright notice, this
+##    list of conditions and the following disclaimer.
+##
+## 2. Redistributions in binary form must reproduce the above copyright notice,
+##    this list of conditions and the following disclaimer in the documentation
+##    and/or other materials provided with the distribution.
+##
+## THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+## AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+## IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+## DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+## FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+## DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+## SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+## CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+## OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+## OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+##
+
+noinst_LTLIBRARIES     = libsnprintf.la
+libsnprintf_la_SOURCES = snprintf.c

src/Makefile.am

@@ -38,19 +38,21 @@ if HAVE_ZLIB
     ZLIB_SRC = inflate.c
 endif
 
+SNPRINTF_LIBS          = $(top_builddir)/snprintf/libsnprintf.la
+
 nodist_noinst_HEADERS  = matioConfig.h
 nodist_include_HEADERS = matio_pubconf.h
 include_HEADERS        = matio.h
 noinst_HEADERS         = matio_private.h mat4.h mat5.h mat73.h \
                          read_data_impl.h safe-math.h
 lib_LTLIBRARIES        = libmatio.la
-libmatio_la_SOURCES    = snprintf.c endian.c io.c $(ZLIB_SRC) read_data.c \
+libmatio_la_SOURCES    = endian.c io.c $(ZLIB_SRC) read_data.c \
                          mat5.c mat4.c mat.c matvar_cell.c matvar_struct.c
-libmatio_la_LIBADD     = $(HDF5_LIBS) $(ZLIB_LIBS)
+libmatio_la_LIBADD     = $(HDF5_LIBS) $(ZLIB_LIBS) $(SNPRINTF_LIBS)
 libmatio_la_LDFLAGS    = -no-undefined -export-symbols @srcdir@/matio.sym $(AM_LDFLAGS)
 
 if MAT73
-    libmatio_la_SOURCES+= mat73.c
+    libmatio_la_SOURCES += mat73.c
 endif
 
 EXTRA_DIST = matio.sym

src/mat73.c

@@ -1401,11 +1401,12 @@ Mat_VarWriteRef(hid_t id, matvar_t *matvar, enum matio_compression compression,
         err = MATIO_E_BAD_ARGUMENT;
     } else {
         char obj_name[64];
-        snprintf(obj_name, sizeof(obj_name), "%llu", (unsigned long long)group_info.nlinks);
+        mat_snprintf(obj_name, sizeof(obj_name), "%llu", (unsigned long long)group_info.nlinks);
         if ( NULL != matvar )
             matvar->compression = compression;
         err = Mat_VarWriteNext73(*refs_id, matvar, obj_name, refs_id);
-        snprintf(obj_name, sizeof(obj_name), "/#refs#/%llu", (unsigned long long)group_info.nlinks);
+        mat_snprintf(obj_name, sizeof(obj_name), "/#refs#/%llu",
+                     (unsigned long long)group_info.nlinks);
         H5Rcreate(ref, id, obj_name, H5R_OBJECT, -1);
     }
     return err;

test/Makefile.am

@@ -405,27 +405,27 @@ TEST_DATAFILES = $(datasets_dir)/large_struct_compressed_le.mat \
                  $(results_dir)/write_struct_complex_2d_numeric-uint32.out \
                  $(results_dir)/write_struct_complex_2d_numeric-uint64.out
 if MAT73
-MAT73 = 1
+    MAT73 = 1
 else
-MAT73 = 0
+    MAT73 = 0
 endif
 
 if HAVE_ZLIB
-COMPRESSION_ZLIB = 1
+    COMPRESSION_ZLIB = 1
 else
-COMPRESSION_ZLIB = 0
+    COMPRESSION_ZLIB = 0
 endif
 
 if EXTENDED_SPARSE
-EXTENDED_SPARSE = 1
+    EXTENDED_SPARSE = 1
 else
-EXTENDED_SPARSE = 0
+    EXTENDED_SPARSE = 0
 endif
 
 if IS_WIN32
-IS_WIN32 = 1
+    IS_WIN32 = 1
 else
-IS_WIN32 = 0
+    IS_WIN32 = 0
 endif
 
 CHECK_ENVIRONMENT = GREP=$(GREP) MAT73=$(MAT73) MATLABEXE=$(MATLABEXE) \
@@ -439,8 +439,8 @@ EXTRA_DIST = $(TESTSUITE_AT) $(TESTSUITE) $(srcdir)/package.m4 \
              $(TEST_DATAFILES)
 
 if NEED_GETOPT
-GETOPT_CFLAGS = -I$(top_builddir)/getopt
-GETOPT_LIBS   = $(top_builddir)/getopt/libgetopt.la
+    GETOPT_CFLAGS = -I$(top_builddir)/getopt
+    GETOPT_LIBS   = $(top_builddir)/getopt/libgetopt.la
 endif
 
 AM_CFLAGS   = -I$(top_srcdir)/src $(GETOPT_CFLAGS) $(HDF5_CFLAGS) $(ZLIB_CFLAGS)

tools/Makefile.am

@@ -28,16 +28,18 @@
 VPATH = @srcdir@
 
 if NEED_GETOPT
-GETOPT_CFLAGS = -I$(top_builddir)/getopt
-GETOPT_LIBS   = $(top_builddir)/getopt/libgetopt.la
+    GETOPT_CFLAGS = -I$(top_builddir)/getopt
+    GETOPT_LIBS   = $(top_builddir)/getopt/libgetopt.la
 endif
 
+SNPRINTF_LIBS = $(top_builddir)/snprintf/libsnprintf.la
+
 AM_CFLAGS = -I$(top_srcdir)/src $(GETOPT_CFLAGS) $(HDF5_CFLAGS) $(ZLIB_CFLAGS) \
             $(LT_CFLAGS)
 AM_LDFLAGS = $(LT_LDFLAGS) $(FCLDFLAGS)
 
 bin_PROGRAMS = matdump
 
-matdump_SOURCES = matdump.c
+matdump_SOURCES = matdump.c 
 matdump_LDADD   = $(top_builddir)/src/libmatio.la $(HDF5_LIBS) $(ZLIB_LIBS) \
-                  $(GETOPT_LIBS)
+                  $(GETOPT_LIBS) $(SNPRINTF_LIBS)

tools/matdump.c

@@ -38,6 +38,14 @@
 #define SIZE_T_FMTSTR "zu"
 #endif
 
+/* snprintf.c */
+#if !HAVE_SNPRINTF
+int rpl_snprintf(char *, size_t, const char *, ...);
+#define mat_snprintf rpl_snprintf
+#else
+#define mat_snprintf snprintf
+#endif /* !HAVE_SNPRINTF */
+
 static const char *optstring = "df:hvHV";
 static struct option options[] = {{"data", no_argument, NULL, 'd'},
                                   {"format", required_argument, NULL, 'f'},
@@ -539,7 +547,7 @@ print_whos(matvar_t *matvar)
         printf("%8" SIZE_T_FMTSTR, matvar->dims[0]);
         for ( i = 1; i < matvar->rank; i++ ) {
             if ( ceil(log10((double)matvar->dims[i])) + 1 < 32 ) {
-                cnt += snprintf(size + cnt, sizeof(size) - cnt, "x%" SIZE_T_FMTSTR, matvar->dims[i]);
+                cnt += mat_snprintf(size + cnt, sizeof(size) - cnt, "x%" SIZE_T_FMTSTR, matvar->dims[i]);
                 if (cnt >= sizeof(size)) {
                     break;
                 }

visual_studio/libmatio/libmatio.vcproj

@@ -383,7 +383,7 @@
 				>
 			</File>
 			<File
-				RelativePath="..\..\src\snprintf.c"
+				RelativePath="..\..\snprint\snprintf.c"
 				>
 			</File>
 		</Filter>

visual_studio/libmatio/libmatio.vcxproj

@@ -287,7 +287,7 @@
     <ClCompile Include="..\..\src\matvar_cell.c" />
     <ClCompile Include="..\..\src\matvar_struct.c" />
     <ClCompile Include="..\..\src\read_data.c" />
-    <ClCompile Include="..\..\src\snprintf.c" />
+    <ClCompile Include="..\..\snprint\snprintf.c" />
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\src\mat4.h" />

visual_studio/libmatio/libmatio.vcxproj.filters

@@ -45,7 +45,7 @@
     <ClCompile Include="..\..\src\read_data.c">
       <Filter>Source Files</Filter>
     </ClCompile>
-    <ClCompile Include="..\..\src\snprintf.c">
+    <ClCompile Include="..\..\snprintf\snprintf.c">
       <Filter>Source Files</Filter>
     </ClCompile>
   </ItemGroup>

visual_studio/matdump/matdump.vcproj

@@ -340,6 +340,10 @@
 				RelativePath="..\..\tools\matdump.c"
 				>
 			</File>
+			<File
+				RelativePath="..\..\snprintf\snprintf.c"
+				>
+			</File>
 		</Filter>
 		<Filter
 			Name="Header Files"

visual_studio/matdump/matdump.vcxproj

@@ -308,6 +308,7 @@
   <ItemGroup>
     <ClCompile Include="..\..\getopt\getopt_long.c" />
     <ClCompile Include="..\..\tools\matdump.c" />
+    <ClCompile Include="..\..\snprintf\snprintf.c" />
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\getopt\getopt.h" />

visual_studio/matdump/matdump.vcxproj.filters

@@ -21,6 +21,9 @@
     <ClCompile Include="..\..\tools\matdump.c">
       <Filter>Source Files</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\snprintf\snprintf.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\getopt\getopt.h">