Choose the locations for temporary files more intelligently.

Subversion-branch: /trunk/chocolate-doom
Subversion-revision: 821

3 files changed, 37 insertions, 6 deletions

diff --git a/src/i_sound.c b/src/i_sound.c
index ec3a68ad..ee0ad57b 100644
--- a/src/i_sound.c
+++ b/src/i_sound.c
@@ -677,7 +677,7 @@ static boolean ConvertMus(byte *musdata, int len, char *filename)
 
 void *I_RegisterSong(void *data, int len)
 {
-    char filename[64];
+    char *filename;
     Mix_Music *music;
 
     if (!music_initialised)
@@ -686,11 +686,7 @@ void *I_RegisterSong(void *data, int len)
     // MUS files begin with "MUS"
     // Reject anything which doesnt have this signature
     
-#ifdef _WIN32
-    sprintf(filename, "doom.mid");
-#else
-    sprintf(filename, "/tmp/doom-%i.mid", getpid());
-#endif
+    filename = M_TempFile("doom.mid");
 
     if (IsMid(data, len) && len < MAXMIDLENGTH)
     {
@@ -718,6 +714,8 @@ void *I_RegisterSong(void *data, int len)
 
     remove(filename);
 
+    Z_Free(filename);
+
     return music;
 }
 
diff --git a/src/m_misc.c b/src/m_misc.c
index 5b98960a..13ca6768 100644
--- a/src/m_misc.c
+++ b/src/m_misc.c
@@ -198,6 +198,37 @@ int M_ReadFile(char const *name, byte **buffer)
     return length;
 }
 
+// Returns the path to a temporary file of the given name, stored
+// inside the system temporary directory.
+//
+// The returned value must be freed with Z_Free after use.
+
+char *M_TempFile(char *s)
+{
+    char *result;
+    char *tempdir;
+
+#ifdef _WIN32
+
+    // Check the TEMP environment variable to find the location.
+
+    temp = getenv("TEMP");
+
+    if (temp == NULL)
+    {
+        tempdir = ".";
+    }
+#else
+    // In Unix, just use /tmp.
+
+    tempdir = "/tmp";
+#endif
+
+    result = Z_Malloc(strlen(tempdir) + strlen(s) + 2, PU_STATIC, 0);
+    sprintf(result, "%s%c%s", tempdir, DIR_SEPARATOR, s);
+
+    return result;
+}
 
 //
 // DEFAULTS
diff --git a/src/m_misc.h b/src/m_misc.h
index 41ba96ae..b3412e9c 100644
--- a/src/m_misc.h
+++ b/src/m_misc.h
@@ -57,6 +57,8 @@ void M_SetConfigDir(void);
 
 void M_MakeDirectory(char *dir);
 
+char *M_TempFile(char *s);
+
 boolean M_FileExists(char *file);