added mktempname function

diff --git a/lib/os.c b/lib/os.c
index c8135f6..207c3c1 100755 (executable)
--- a/lib/os.c
+++ b/lib/os.c
@@ -147,3 +147,48 @@ char* stripFilename(char*filename, char*newext)
     return name;
 }
 
+static char* getTempDir()
+{
+#ifdef WIN32
+    char*dir = getenv("TMP");
+    if(!dir) dir = getenv("TEMP");
+    if(!dir) dir = getenv("tmp");
+    if(!dir) dir = getenv("temp");
+    if(!dir) dir = "C:\\";
+#else
+    char* dir = "/tmp/";
+#endif
+    return dir;
+}
+
+char* mktempname(char*ptr) {
+    static char tmpbuf[128];
+    char*dir = getTempDir();
+    int l = strlen(dir);
+    char*sep = "";
+    if(!ptr)
+       ptr = tmpbuf;
+    if(l && dir[l-1]!='/' && dir[l-1]!='\\') {
+#ifdef WIN32
+       sep = "\\";
+#else
+       sep = "/";
+#endif
+    }
+
+ //   used to be mktemp. This does remove the warnings, but
+ //   It's not exactly an improvement.
+#ifdef HAVE_LRAND48
+    sprintf(ptr, "%s%s%08x%08x",dir,sep,lrand48(),lrand48());
+#else
+#   ifdef HAVE_RAND
+       sprintf(ptr, "%s%s%08x%08x",dir,sep,rand(),rand());
+#   else
+       static int count = 1;
+       sprintf(ptr, "%s%s%08x%04x%04x",dir,sep,time(0),(unsigned int)tmpbuf^((unsigned int)tmpbuf)>>16,count);
+       count ++;
+#   endif
+#endif
+     return ptr;
+}
+

diff --git a/lib/os.h b/lib/os.h
index 8f33eb8..3dae4e6 100755 (executable)
--- a/lib/os.h
+++ b/lib/os.h
@@ -38,6 +38,8 @@ char* getInstallationPath();
 char* concatPaths(char*base, char*add);
 char* stripFilename(char*filename, char*newext);
 
+char* mktempname(char*);
+
 #ifdef __cplusplus
 }
 #endif