initial

.gitignore

+*
+!.gitignore 
+!downloader.py
+!semesters.json

downloader.py

+#!/usr/bin/env python3
+import os
+import urllib.request
+import json
+import re
+import sys
+import argparse
+
+parser = argparse.ArgumentParser(
+        prog="downloader",
+        description="file downloader intended for my ETH exercise series and scripts",
+        epilog="requires a semesters.json in your active directory"
+        )
+
+parser.add_argument("week", nargs="?", default=15, type=int)
+parser.add_argument("-a", "--all", action="store_true")
+parser.add_argument("-s", "--semester", type=int)
+
+args = parser.parse_args()
+print(args)
+
+with open("semesters.json", "r") as f:
+    data = json.load(f)
+
+name = data["name"]
+data = data["semesters"]
+
+sem = max(map(int, data))
+
+if args.semester is not None:
+    sem = min(args.semester, sem)
+
+
+
+def get_shorthand(lecture: str):
+    return "".join((i[:4] for i in re.split(" |_", lecture)))
+
+def ensure_path_existence(path: str):
+    if os.path.exists(path):
+        return
+    os.mkdir(path)
+
+
+def setup_template(lecture: str, week: int):
+
+    shorthand = get_shorthand(lecture)
+    # I do not wish for my files to get overwritten
+    if os.path.exists(lec["name"] + os.sep + shorthand + "_" + str(week) + ".tex"):
+        return
+
+    with open(lecture + os.sep + "Exercises" + os.sep + shorthand + "_" + str(week) + ".tex", "w") as file:
+        print("\\documentclass{amsart}", file=file)
+        print("\\usepackage{amsmath}", file=file)
+        print("\\usepackage{amssymb}", file=file)
+        print(f"\n\\author{{{name}}}", file=file)
+        print("\\title{{{} Series {}}}".format(
+            lecture.replace("_", " "), week), file=file)
+        print("\n\\begin{document}\n\\maketitle", file=file)
+        print("\\begin{enumerate}\n", file=file)
+        print("\\end{enumerate}", file=file)
+        print("\\end{document}", file=file)
+
+
+# returns True on success and false on failure
+def download_week(lec: dict, week: int):
+    ensure_path_existence(lec["name"])
+
+    num = week + lec["offset"]
+    f = lec["file"].format(num)
+
+    try:
+        urllib.request.urlretrieve(f"{lec['url']}/{f}", f"{lec['name']}/{f}")
+    except urllib.error.HTTPError as e:
+        print(lec["name"].ljust(max((len(l["name"]) for l in lecs))), f"week {week:2} Download failed with code ", e.code)
+        return False
+
+    ensure_path_existence(lec["name"] + os.sep + "Exercises")
+    setup_template(lec["name"], num)
+
+    return True
+
+
+ensure_path_existence(f"Semester_{sem}")
+
+os.system("rm ./current")
+os.system(f"ln -sf ./Semester_{sem} ./current")
+os.chdir(f"Semester_{sem}")
+
+lecs = data[str(sem)]
+
+for lec in lecs:
+    if args.all:
+        for i in range(1, args.week + 1):
+            if not download_week(lec, i):
+                break;
+    else:
+        download_week(lec, args.week)
+
+print("ALL DONE! :)")

semesters.json

+{
+    "name" : "Fadri Lardon",
+    "semesters" : {
+        "3" : [
+        {
+            "name" : "Complex_Analysis",
+            "url" : "https://metaphor.ethz.ch/x/2022/hs/401-2303-00L/ex",
+            "file" : "ES{}.pdf",
+            "offset" : 0
+        },
+        {
+            "name" : "Analysis_3",
+            "url" : "https://metaphor.ethz.ch/x/2022/hs/401-2283-00L/ex",
+            "file" : "serie{:02d}_en.pdf",
+            "offset" : 0
+        },
+        {
+            "name" : "Algebra_I",
+            "url" : "https://metaphor.ethz.ch/x/2022/hs/401-2003-00L/ex",
+            "file" : "S{}.pdf",
+            "offset" : 0
+        },
+        {
+            "name" : "Theoretical_Informatics",
+            "url" : "https://courses.ite.inf.ethz.ch/theo_inf_22",
+            "file" : "blatt{:02d}e.pdf",
+            "offset" : 0
+        }
+        ],
+        "4" : [
+            {
+                "name" : "Topology",
+                "url"  : "https://metaphor.ethz.ch/x/2023/fs/401-2554-00L/ex",
+                "file" : "Serie{}.pdf",
+                "offset" : 0
+            },
+            {
+                "name" : "Algebra_II",
+                "url"  : "https://metaphor.ethz.ch/x/2023/fs/401-2004-00L/ex",
+                "file" : "S{}.pdf",
+                "offset" : 14
+            },
+            {
+                "name" : "Analysis_4",
+                "url"  : "https://metaphor.ethz.ch/x/2023/fs/401-2464-00L/ex",
+                "file" : "ps{}.pdf",
+                "offset" : -1
+            },
+            {
+                "name" : "Probability_&_Statistics",
+                "url"  : "https://metaphor.ethz.ch/x/2023/fs/401-2604-00L/ex",
+                "file" : "2023_WuS_S{}.pdf",
+                "offset" : 0
+            },
+            {
+                "name" : "Geometry",
+                "url"  : "https://metaphor.ethz.ch/x/2023/fs/401-2534-00L/ex",
+                "file" : "ex_{}.pdf",
+                "offset" : 0
+            }
+        ]
+    }
+}
+