buildorder.py: shorten code a bit

scripts/buildorder.py

@@ -32,24 +32,12 @@ def die(msg):
 
 def parse_build_file_dependencies(path):
     "Extract the dependencies of a build.sh or *.subpackage.sh file."
-    pkg_dep_prefix = 'TERMUX_PKG_DEPENDS='
-    pkg_build_dep_prefix = 'TERMUX_PKG_BUILD_DEPENDS='
-    subpkg_dep_prefix = 'TERMUX_SUBPKG_DEPENDS='
     dependencies = []
 
     with open(path, encoding="utf-8") as build_script:
-        prefix = None
         for line in build_script:
-            if line.startswith(pkg_dep_prefix):
-                prefix = pkg_dep_prefix
-            elif line.startswith(pkg_build_dep_prefix):
-                prefix = pkg_build_dep_prefix
-            elif line.startswith(subpkg_dep_prefix):
-                prefix = subpkg_dep_prefix
-            else:
-                continue
-
-            dependencies_string = line[len(prefix):]
+            if line.startswith( ('TERMUX_PKG_DEPENDS', 'TERMUX_PKG_BUILD_DEPENDS', 'TERMUX_SUBPKG_DEPENDS') ):
+                dependencies_string = line.split('DEPENDS=')[1]
                 for char in "\"'\n":
                     dependencies_string = dependencies_string.replace(char, '')