[Tools] Adds assignment placer to place files in pre-existing submissions

.gitignore

@@ -1 +1,2 @@
-*~
+*~
+tools/assignments/*

install_lichen.sh

@@ -30,7 +30,7 @@ fi
 # compile & install the tools
 
 mkdir -p ${lichen_installation_dir}/bin
-
+mkdir -p ${lichen_installation_dir}/tools/assignments
 
 #--------------------
 # plaintext tool
@@ -64,6 +64,7 @@ cp ${lichen_repository_dir}/tokenizer/java/java_tokenizer.py ${lichen_installati
 cp ${lichen_repository_dir}/tokenizer/mips/mips_tokenizer.py ${lichen_installation_dir}/bin/mips_tokenizer.py
 cp ${lichen_repository_dir}/tokenizer/data.json ${lichen_installation_dir}/bin/data.json
 
+cp -rf ${lichen_repository_dir}/tools/* ${lichen_installation_dir}/tools
 
 ########################################################################################################################
 # fix permissions

tools/assignment_placer.py

@@ -0,0 +1,42 @@
+import os
+import argparse
+import shutil
+import secrets
+
+def getArgs():
+    parser = argparse.ArgumentParser()
+    parser.add_argument("semester", help="The semester_id where assignments will be placed (i.e. s20).")
+    parser.add_argument("course", help="The course_id where assignments will be placed (i.e. sample).")
+    parser.add_argument("gradeable", help="The gradeable_id where assignments will be placed (i.e. grades_released_homework_autohiddenEC).")
+    args = parser.parse_args()
+    return args
+
+def generateHashPrefix(nbytes = 8):
+    return secrets.token_hex(nbytes)
+
+if __name__ == "__main__":
+    args = getArgs()
+    gradeable_path = f'/var/local/submitty/courses/{args.semester}/{args.course}/submissions/{args.gradeable}'
+    assignments_path = f'{os.path.dirname(os.path.realpath(__file__))}/assignments'
+
+    if not os.path.isdir(assignments_path) or not os.path.isdir(gradeable_path):
+        raise SystemExit('The assignments directory or the gradeable does not exist. Please create those.')
+
+    files_in_assign = os.listdir(assignments_path)
+    users_for_placement = os.listdir(gradeable_path)
+    num_to_place = min(len(users_for_placement), len(files_in_assign))
+    a_ind = 0
+
+    hash_prefix = generateHashPrefix()
+    print(f'Assignment prefix is: {hash_prefix} (regex: {hash_prefix}_*)')
+    for user_id in users_for_placement:
+        current_path = f'{gradeable_path}/{user_id}'
+        res = list(filter(lambda x: os.path.isdir(f'{current_path}/{x}'), os.listdir(current_path)))
+        highest = len(res) + 1
+        new_path = f'{current_path}/{highest}'
+        os.mkdir(new_path)
+        ext = os.path.splitext(files_in_assign[a_ind])[1]
+        shutil.copy2(f'assignments/{files_in_assign[a_ind]}', f'{new_path}/{hash_prefix}_{a_ind}{ext}')
+        a_ind += 1
+        if a_ind == num_to_place:
+            break