git version getter thing

1 files changed, 21 insertions, 0 deletions

diff --git a/misc/get_version.php b/misc/get_version.php
new file mode 100644
index 0000000..8d48b4a
--- /dev/null
+++ b/misc/get_version.php
@@ -0,0 +1,21 @@
+<?php
+// because of the values in .gitattributes, these should get modified according
+// to the current commit (on any checkout) and/or ref (in archive exports)
+// don't touch these yourself even if they look wrong!
+const __GIT_ID_INFO__ = '$Id$';
+const __GIT_REF_INFO__ = '$Format:%D$';
+
+/**
+ * Gets a version identifier for the currently checked out version of the software
+ * @return string
+ */
+function get_version(): string {
+    if (str_contains(__GIT_REF_INFO__, 'tag: ')) {
+        return explode(',', explode('tag: ', __GIT_REF_INFO__, 2)[1], 2)[0];
+    }
+    // have to do this janky string thing to stop git replacing this one as well :3
+    if (__GIT_ID_INFO__ != '$' . 'Id$') {
+        return 'git ' . substr(__GIT_ID_INFO__, 5, 10);
+    }
+    return 'unknown';
+}
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