GraphicsMagick: Add a short-term snprintf hack to hopefully get ...

changeset 064641820cb8 in /hg/GraphicsMagick
details: http://hg.GraphicsMagick.org/hg/GraphicsMagick?cmd=changeset;node=064641820cb8
summary: Add a short-term snprintf hack to hopefully get GM compiling for MSVC < 2015

diffstat:

 ChangeLog          |   3 +++
 magick/nt_base.h   |  14 ++++++++++++++
 www/Changelog.html |   2 ++
 3 files changed, 19 insertions(+), 0 deletions(-)

diffs (55 lines):

diff -r cebad674f368 -r 064641820cb8 ChangeLog
--- a/ChangeLog	Sat Nov 12 14:44:13 2022 -0600
+++ b/ChangeLog	Sat Nov 12 18:10:28 2022 -0600
@@ -1,5 +1,8 @@
 2022-11-12  Bob Friesenhahn  <[email protected]>
 
+	* magick/nt_base.h (snprintf): For MSVC older than 2015, fall back
+	to using sprintf for the moment.
+
 	* coders/msl.c (ProcessMSLScript): Handle parser creation failure.
 
 	* coders/meta.c (GetIPTCStream): Assure that offset is initialized.
diff -r cebad674f368 -r 064641820cb8 magick/nt_base.h
--- a/magick/nt_base.h	Sat Nov 12 14:44:13 2022 -0600
+++ b/magick/nt_base.h	Sat Nov 12 18:10:28 2022 -0600
@@ -193,6 +193,7 @@
     1900 Visual C++ 2015
     1910 Visual C++ 2017
     1920 Visual C++ 2019
+    1930 Visual C++ 2022
 
   Should look at __CLR_VER ("Defines the version of the common language
   runtime used when the application was compiled.") as well.
@@ -213,6 +214,19 @@
 #endif
 
 /*
+  MSVC does not have snprintf (a C'99 feature) until Visual Studio 2015.
+
+  It is possible to cobble together an actual working equivalent using
+  _vsnprintf(), _vsnprintf_s(), and _vscprintf() but this quick hack just uses
+  sprintf since current snprintf usages were direct replacements for sprintf.
+  A proper implementation can come later.
+ */
+#if defined(_VISUALC_) && (_MSC_VER < 1900)
+#undef snprintf
+#define snprintf(str,size,format,...) sprintf(str,format,__VA_ARGS__)
+#endif
+
+/*
   Windows provides Unix-style access() via _access()
  */
 #define HAVE_ACCESS 1
diff -r cebad674f368 -r 064641820cb8 www/Changelog.html
--- a/www/Changelog.html	Sat Nov 12 14:44:13 2022 -0600
+++ b/www/Changelog.html	Sat Nov 12 18:10:28 2022 -0600
@@ -40,6 +40,8 @@
 <p>2022-11-12  Bob Friesenhahn  &lt;<a class="reference external" href="mailto:bfriesen&#37;&#52;&#48;simple&#46;dallas&#46;tx&#46;us">bfriesen<span>&#64;</span>simple<span>&#46;</span>dallas<span>&#46;</span>tx<span>&#46;</span>us</a>&gt;</p>
 <blockquote>
 <ul class="simple">
+<li><p>magick/nt_base.h (snprintf): For MSVC older than 2015, fall back
+to using sprintf for the moment.</p></li>
 <li><p>coders/msl.c (ProcessMSLScript): Handle parser creation failure.</p></li>
 <li><p>coders/meta.c (GetIPTCStream): Assure that offset is initialized.</p></li>
 <li><p>magick/floats.c (_Gm_convert_fp32_to_fp16): Fix Clang Analyzer