Add some changes to make ETL more suitable for Fedora:

[synfig.git] / ETL / trunk / ETL / _stringf.h

diff --git a/ETL/trunk/ETL/_stringf.h b/ETL/trunk/ETL/_stringf.h
index f91cfca..22939a2 100644 (file)
--- a/ETL/trunk/ETL/_stringf.h
+++ b/ETL/trunk/ETL/_stringf.h
@@ -30,9 +30,14 @@
 
 /* === H E A D E R S ======================================================= */
 
+#ifndef _GNU_SOURCE
+#define _GNU_SOURCE
+#endif
+
 #include <string>
 #include <cstdarg>
 #include <cstdlib>
+#include <cstdio>
 
 /* === M A C R O S ========================================================= */
 
@@ -48,6 +53,13 @@
 #define POPEN_BINARY_WRITE_TYPE "w"
 #endif
 
+#ifdef __ETL_HAS__VSNPRINTF
+#ifndef __ETL_HAS_VSNPRINTF
+#define vnsprintf _vnsprintf
+#define __ETL_HAS_VSNPRINTF
+#endif
+#endif
+
 /* === T Y P E D E F S ===================================================== */
 
 _ETL_BEGIN_CDECLS
@@ -58,22 +70,33 @@ _ETL_BEGIN_CDECLS
 #define ETL_NO_THROW throw()
 #endif
 
-#ifdef HAVE_VASPRINTF  // This is the preferred method
- extern int vasprintf(char **,const char *,va_list)ETL_NO_THROW;
+// Prefer prototypes from glibc headers, since defining them ourselves
+// works around glibc security mechanisms
+
+#ifdef __ETL_HAS_VASPRINTF     // This is the preferred method
+ #ifndef __GLIBC__
+  extern int vasprintf(char **,const char *,va_list)ETL_NO_THROW;
+ #endif
 #else
 
-# ifdef HAVE_VSNPRINTF // This is the secondary method
- extern int vsnprintf(char *,size_t,const char*,va_list)ETL_NO_THROW;
+# ifdef __ETL_HAS_VSNPRINTF    // This is the secondary method
+ #ifndef __GLIBC__
+  extern int vsnprintf(char *,size_t,const char*,va_list)ETL_NO_THROW;
+ #endif
 # endif
 
 #endif
 
-#ifdef HAVE_VSSCANF
-extern int vsscanf(const char *,const char *,va_list)ETL_NO_THROW;
+#ifdef __ETL_HAS_VSSCANF
+ #ifndef __GLIBC__
+  extern int vsscanf(const char *,const char *,va_list)ETL_NO_THROW;
+ #endif
 #else
 #define ETL_NO_VSTRSCANF
-#ifdef HAVE_SSCANF
-extern int sscanf(const char *buf, const char *format, ...)ETL_NO_THROW;
+#ifdef __ETL_HAS_SSCANF
+ #ifndef __GLIBC__
+  extern int sscanf(const char *buf, const char *format, ...)ETL_NO_THROW;
+ #endif
 #endif
 #endif
 
@@ -88,18 +111,18 @@ _ETL_BEGIN_NAMESPACE
 inline std::string
 vstrprintf(const char *format, va_list args)
 {
-#ifdef HAVE_VASPRINTF  // This is the preferred method (and safest)
+#ifdef __ETL_HAS_VASPRINTF     // This is the preferred method (and safest)
        char *buffer;
        std::string ret;
        int i=vasprintf(&buffer,format,args);
-       if (i>-1) 
+       if (i>-1)
        {
                ret=buffer;
                free(buffer);
        }
        return ret;
 #else
-#ifdef HAVE_VSNPRINTF  // This is the secondary method (Safe, but bulky)
+#ifdef __ETL_HAS_VSNPRINTF     // This is the secondary method (Safe, but bulky)
 #warning etl::vstrprintf() has a maximum size of ETL_STRPRINTF_MAX_LENGTH in this configuration.
 #ifdef ETL_THREAD_SAFE
        char buffer[ETL_STRPRINTF_MAX_LENGTH];
@@ -148,7 +171,7 @@ strscanf(const std::string &data, const char*format, ...)
 }
 #else
 
-#if defined (HAVE_SSCANF) && defined (__GNUC__)
+#if defined (__ETL_HAS_SSCANF) && defined (__GNUC__)
 #define strscanf(data,format,...) sscanf(data.c_str(),format,__VA_ARGS__)
 #endif
 #endif