Add serd_new_real_file_uri()

1 files changed, 47 insertions, 0 deletions

diff --git a/src/node.c b/src/node.c
index 566e8839..76c12235 100644
--- a/src/node.c
+++ b/src/node.c
@@ -14,6 +14,8 @@
   OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */
 
+#define _XOPEN_SOURCE 600 /* for realpath */
+
 #include "node.h"
 
 #include "namespaces.h"
@@ -24,6 +26,11 @@
 #include "exess/exess.h"
 #include "serd/serd.h"
 
+#ifdef _WIN32
+#  define WIN32_LEAN_AND_MEAN 1
+#  include <windows.h>
+#endif
+
 #include <assert.h>
 #include <float.h>
 #include <math.h>
@@ -539,6 +546,32 @@ is_uri_path_char(const char c)
   }
 }
 
+static char*
+serd_realpath(const char* const path)
+{
+  if (!path) {
+    return NULL;
+  }
+
+#ifdef _WIN32
+  const DWORD size = GetFullPathName(path, 0, NULL, NULL);
+  if (size == 0) {
+    return NULL;
+  }
+
+  char* const out = (char*)calloc(size, 1);
+  const DWORD ret = GetFullPathName(path, MAX_PATH, out, NULL);
+  if (ret == 0 || ret >= size) {
+    free(out);
+    return NULL;
+  }
+
+  return out;
+#else
+  return realpath(path, NULL);
+#endif
+}
+
 SerdNode*
 serd_new_file_uri(const SerdStringView path, const SerdStringView hostname)
 {
@@ -586,6 +619,20 @@ serd_new_file_uri(const SerdStringView path, const SerdStringView hostname)
   return node;
 }
 
+SerdNode*
+serd_new_real_file_uri(const char* const path, const char* const hostname)
+{
+  char* const real_path = serd_realpath(path);
+  if (!real_path) {
+    return NULL;
+  }
+
+  SerdNode* const node = serd_new_file_uri(SERD_MEASURE_STRING(real_path),
+                                           SERD_MEASURE_STRING(hostname));
+  free(real_path);
+  return node;
+}
+
 typedef size_t (*SerdWriteLiteralFunc)(const void* const user_data,
                                        const size_t      buf_size,
                                        char* const       buf);