feat(andax): helpers for parsing spec files (#4994) (#5022)

* feat(andax): helpers for parsing spec files

* Update spec.rhai



---------


(cherry picked from commit 9768565ed6)

Signed-off-by: madomado <madonuko@outlook.com>
Co-authored-by: madomado <madonuko@outlook.com>

andax/spec.rhai

@@ -0,0 +1,20 @@
+fn get_version(rpm) {
+    return `(?m)^Version:\s*(.+)$`.find(rpm.f, 1);
+}
+
+fn get_release(rpm) {
+    let r = `(?m)^Release:\s*(.+)$`.find(rpm.f, 1);
+    r = sub(`(?m)(%\??dist|%\{\??dist\})\s*$`, "", r);
+    r.replace("%autorelease", "1");
+    return r;
+}
+
+/// Only supports one-liner `%global`s!
+fn get_global(rpm, macro) {
+    return `(?m)^%global\s+${macro}\s+(.+)$`.find(rpm.f, 1);
+}
+
+/// Only supports one-liner `%define`s!
+fn get_define(rpm, macro) {
+    return `(?m)^%define\s+${macro}\s+(.+)$`.find(rpm.f, 1);
+}