Implement (incomplete) dependency checking.

Targets still do not depend on .do-files, and a lot of the edge cases
are still not handled correctly. Furthermore some error-checking code is
still missing, which could possibly crash the program (partially marked
with comments), as well as some free() calls.

An utitlity python script (print_dep.py) was also added to aid in
debugging matters.

1 files changed, 55 insertions, 0 deletions

diff --git a/print_dep.py b/print_dep.py
new file mode 100755
index 0000000..803b5e9
--- /dev/null
+++ b/print_dep.py
@@ -0,0 +1,55 @@
+#!/usr/bin/env python3
+
+# quick and dirty utility to make the binary mess, produced by my redo program
+# into something more friendly to the human eye
+# requires termcolor (pip install termcolor)
+
+import struct
+import sys
+import hashlib
+from binascii import hexlify
+from os.path import basename
+from termcolor import colored
+
+def convert_back(s):
+    return s.replace('!', '/')
+
+if (len(sys.argv) < 2):
+    print("Need an argument.")
+    exit(1)
+
+hasher = hashlib.sha1()
+file = open(sys.argv[1], 'rb')
+magic = file.read(4)
+hash = file.read(20)
+subdeps = file.read()
+org_file = convert_back(basename(sys.argv[1]))
+
+hash_str = str(hexlify(hash), 'ascii')
+
+with open(org_file, 'rb') as f:
+    buf = f.read()
+    hasher.update(buf)
+
+print("Target: " + org_file)
+print("Hash: " + hash_str + " ", end="")
+if hasher.hexdigest() == hash_str:
+    print(colored(u"\u2714", "green", attrs=['bold']))
+else:
+    print(colored(u"\u2718", "red", attrs=['bold']))
+
+print("Magic number: " + str(struct.unpack('i', magic)[0]))
+print("Dependencies:")
+start = True
+thing = ""
+for byte in subdeps:
+    if start:
+        print("    " + chr(byte) + "-", end="")
+        start = False
+    elif byte == 0:
+        start = True
+        print(thing)
+        thing = ""
+    else:
+        thing += chr(byte)
+        continue