1 files changed, 38 insertions, 0 deletions
diff --git a/src/dged/path.h b/src/dged/path.h
new file mode 100644
index 0000000..d74f723
--- /dev/null
+++ b/src/dged/path.h
@@ -0,0 +1,38 @@
+#include <limits.h>
+#include <stdlib.h>
+#include <string.h>
+
+static char *expanduser(const char *path) {
+  // replace tilde
+  char *res = NULL;
+  char *tilde_pos = strchr(path, '~');
+  if (tilde_pos != NULL) {
+    char *home = getenv("HOME");
+    if (home != NULL) {
+        // allocate a new string based with the new len
+        size_t home_len = strlen(home);
+        size_t path_len = strlen(path);
+        size_t total_len = path_len + home_len;
+        res = malloc(total_len);
+        size_t initial_len = tilde_pos - path;
+        strncpy(res, path, initial_len);
+
+        strncpy(res + initial_len, home, home_len);
+
+        size_t rest_len = path_len - initial_len - 1;
+        strncpy(res + initial_len + home_len, path + initial_len + 1, rest_len);
+        res[total_len-1] = '\0';
+    }
+  }
+
+  return res != NULL ? res : strdup(path);
+}
+
+static char *to_abspath(const char *path) {
+  char *p = realpath(path, NULL);
+  if (p != NULL) {
+    return p;
+  } else {
+    return strdup(path);
+  }
+}