From 8236c8c8aa5847f62afa63f548138a6568014cb5 Mon Sep 17 00:00:00 2001
From: SinTan1729 <sayantan.santra689@gmail.com>
Date: Fri, 17 Mar 2023 00:00:40 -0500
Subject: [PATCH] Added update-lure-checksums.py

---
 update-lure-checksums.py | 75 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 75 insertions(+)
 create mode 100644 update-lure-checksums.py

diff --git a/update-lure-checksums.py b/update-lure-checksums.py
new file mode 100644
index 0000000..fbd419e
--- /dev/null
+++ b/update-lure-checksums.py
@@ -0,0 +1,75 @@
+#!/bin/env python3
+
+# This is a script to update checksums for sources in lure build scripts
+# This is a crude analog for updpkgsums for PKGBUILD files
+# The script assumed that matching sources* and checksums* lines are already there
+
+import os
+import re
+import subprocess
+import time
+
+# Check if the build script exists
+if not os.path.isfile('lure.sh'):
+    print("Couldn't find a lure.sh file in the current directory.")
+    exit(1)
+
+with open('lure.sh', 'r') as script_file:
+    script = script_file.readlines()
+
+vars = {}
+for line in script:
+    if '=' not in line or '\t' in line:
+        continue
+    var, val = line.strip('\n').split('=')
+    vars[var] = val.strip('""').strip("''")
+
+for src_type in [k for k in vars.keys() if "sources" in k]:
+    suffix = src_type.split('_')[1]
+    if suffix != "":
+        suffix = "_"+suffix
+
+    # Read all the links
+    links = [link.strip('""').strip("''")
+             for link in vars[src_type].strip('()').split()]
+
+    # Get the old sums
+    old_sums = vars["checksums"+suffix].strip('()').split()
+    old_sums = [sum.strip('""').strip("''") for sum in old_sums]
+
+    checksums = []
+    for i, link in enumerate(links):
+        if old_sums[i] == 'SKIP':
+            checksums.append('SKIP')
+            continue
+        # Try to do variable expansions (works up to one level, should be enough)
+        to_replace = list(set(re.findall('(\${.+?})', link)))
+        for str in to_replace:
+            str_clean = str.strip('${}')
+            link = link.replace(str, vars[str_clean])
+
+        filename = subprocess.run(
+            ['curl', '-sLO', '-w', '%{filename_effective}', link], stdout=subprocess.PIPE)
+        filename = filename.stdout.decode('utf-8')
+
+        checksum = subprocess.run(
+            ['sha256sum', filename], stdout=subprocess.PIPE)
+        checksum = checksum.stdout.decode('utf-8').split()[0]
+        checksums.append(checksum)
+
+    # Build the output line
+    sum_out = "checksums"+suffix+"=('"+"' '".join(checksums)+"')\n"
+    for i, line in enumerate(script):
+        if "checksums"+suffix in line:
+            script[i] = sum_out
+            print("Updated checksums for "+suffix[1:]+" sources")
+
+timestamp = "{}".format(int(time.time()))
+
+with open(timestamp, 'w') as tempfile:
+    tempfile.writelines(script)
+
+os.rename('lure.sh', "lure-"+timestamp+".sh")
+os.rename(timestamp, 'lure.sh')
+
+print("Done!")