2 files changed, 26 insertions, 11 deletions
diff --git a/src/filesystem.c b/src/filesystem.c
index 38af498..03614ce 100644
--- a/src/filesystem.c
+++ b/src/filesystem.c
@@ -426,7 +426,7 @@ lilv_dir_for_each(const char* path,
 }
 
 char*
-lilv_create_temporary_directory(const char* pattern)
+lilv_create_temporary_directory_in(const char* pattern, const char* parent)
 {
 #ifdef _WIN32
   static const char chars[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
@@ -438,13 +438,10 @@ lilv_create_temporary_directory(const char* pattern)
     return NULL;
   }
 
-  char* const  tmpdir           = lilv_temp_directory_path();
-  char* const  path_pattern     = lilv_path_join(tmpdir, pattern);
+  char* const  path_pattern     = lilv_path_join(parent, pattern);
   const size_t path_pattern_len = strlen(path_pattern);
   char* const  suffix           = path_pattern + path_pattern_len - 6;
 
-  free(tmpdir);
-
   for (unsigned attempt = 0; attempt < 128; ++attempt) {
     for (unsigned i = 0; i < 6; ++i) {
       suffix[i] = chars[rand() % n_chars];
@@ -457,14 +454,23 @@ lilv_create_temporary_directory(const char* pattern)
 
   return NULL;
 #else
-  char* const tmpdir       = lilv_temp_directory_path();
-  char* const path_pattern = lilv_path_join(tmpdir, pattern);
+  char* const path_pattern = lilv_path_join(parent, pattern);
 
-  free(tmpdir);
   return mkdtemp(path_pattern); // NOLINT (not a leak)
 #endif
 }
 
+char*
+lilv_create_temporary_directory(const char* pattern)
+{
+  char* const tmpdir = lilv_temp_directory_path();
+  char* const result = lilv_create_temporary_directory_in(pattern, tmpdir);
+
+  free(tmpdir);
+
+  return result;
+}
+
 int
 lilv_create_directories(const char* dir_path)
 {
diff --git a/src/filesystem.h b/src/filesystem.h
index a82ec6c..1a8dc68 100644
--- a/src/filesystem.h
+++ b/src/filesystem.h
@@ -146,12 +146,21 @@ lilv_dir_for_each(const char* path,
                   void (*f)(const char* path, const char* name, void* data));
 
 /**
-   Create a unique temporary directory.
+   Create a unique temporary directory in a specific directory.
 
    The last six characters of `pattern` must be `XXXXXX` and will be replaced
    with random characters.  This works roughly like mkdtemp, except the pattern
-   should only be a directory name, not a full path.  The returned path will be
-   in a suitable system temporary directory.
+   should only be a directory name, not a full path.  The created path will be
+   a child of the given parent directory.
+*/
+char*
+lilv_create_temporary_directory_in(const char* pattern, const char* parent);
+
+/**
+   Create a unique temporary directory.
+
+   This is like lilv_create_temporary_directory_in(), except it creates the
+   directory in the system temporary directory.
 */
 char*
 lilv_create_temporary_directory(const char* pattern);