Init.

README.md

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+# Comprimé
+
+Utility for compressing directories into unexecutable files.

compress.py

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+#!/usr/bin/env -S python3
+
+import subprocess
+import sys
+
+
+def main():
+    [_, input] = sys.argv
+    input_tar = input + ".tar"
+    output = input + ".cprmt"
+    print("Compressing '" + input + "' into '" + output + "'.")
+    subprocess.Popen(["tar", "cf", input_tar, input]).wait()
+    input_tar_fd = open(input_tar, "rb")
+    output_fd = open(output, "wb")
+    byte_index = 0
+    while True:
+        read = input_tar_fd.read(1024)
+        if len(read) == 0:
+            break
+        for byte in read:
+            if byte_index == 0:
+                output_fd.write(bytes([5, byte]))
+            else:
+                output_fd.write(bytes([byte]))
+            byte_index += 1
+            byte_index %= 4
+    print("Done.")
+
+
+if __name__ == "__main__": main()

decompr.py

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+#!/usr/bin/env -S python3
+
+import subprocess
+import sys
+
+
+def main():
+    [_, input] = sys.argv
+    input_tar = input.replace(".cprmt", ".tar")
+    output = input_tar.replace(".tar", "")
+    print("Decompressing '" + input + "' into '" + output + "'.")
+    input_fd = open(input, "rb")
+    output_tar_fd = open(input_tar, "wb")
+    byte_index = 0
+    while True:
+        read = input_fd.read(1024)
+        if len(read) == 0:
+            break
+        for byte in read:
+            if byte_index == 0:
+                pass
+            else:
+                output_tar_fd.write(bytes([byte]))
+            byte_index += 1
+            byte_index %= 5
+    subprocess.Popen(["tar", "xf", input_tar]).wait()
+    print("Done.")
+
+
+if __name__ == "__main__": main()

test/.gitignore

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+/wdir

test/case/a

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+arbre

test/case/b

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+barbier

test/run

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+#!/usr/bin/bash
+cd "$(dirname "$(realpath "$0")")"
+set -e
+
+
+
+rm -fr wdir
+mkdir  wdir wdir/in wdir/out
+cp -r case wdir/in/
+
+
+cd wdir/in
+../../../compress.py case
+cp case.cprmt ../out/
+
+cd ../out
+../../../decompr.py case.cprmt