Reimplement get-mods.sh as a Python script

Users no longer require sh, curl, unzip, or a *nix environment in order
to automatically download the required mods. This should allow users of
other operating systems such as Windows to also use this script.

Bug: #28

get_mods.py

@@ -0,0 +1,53 @@
+#!/usr/bin/env python3
+
+import io
+import os
+import shutil
+import sys
+import urllib.request
+import zipfile
+
+worldmods = os.path.normpath(sys.argv[1])
+if not os.path.exists(worldmods):
+    print("The provided path does not exist")
+    exit(1)
+
+mods = (
+    ("https://codeload.github.com/minetest-mods/mesecons/zip/master", "mesecons"),
+    ("https://codeload.github.com/LNJ2/carpet/zip/master", "carpet"),
+    ("https://codeload.github.com/minetest-mods/crops/zip/master", "crops"),
+    ("https://codeload.github.com/minetest-mods/flowerpot/zip/master", "flowerpot"),
+    ("https://codeload.github.com/minetest-mods/lapis/zip/master", "lapis"),
+    ("https://codeload.github.com/minetest-mods/quartz/zip/master", "quartz"),
+    ("https://codeload.github.com/minetest-mods/xdecor/zip/master", "xdecor"),
+    ("https://codeload.github.com/oOChainLynxOo/hardenedclay/zip/master", "hardenedclay"),
+    ("https://codeload.github.com/minetest-mods/nether/zip/master", "nether"),
+    ("https://codeload.github.com/ShadowNinja/minetest_bedrock/zip/master", "minetest_bedrock"),
+    ("https://gitlab.com/VanessaE/basic_materials/-/archive/master/basic_materials-master.zip", "basic_materials"),
+    ("https://gitlab.com/VanessaE/biome_lib/-/archive/master/biome_lib-master.zip", "biome_lib"),
+    ("https://gitlab.com/VanessaE/plantlife_modpack/-/archive/master/plantlife_modpack-master.zip", "plantlife_modpack"),
+    ("https://gitlab.com/VanessaE/signs_lib/-/archive/master/signs_lib-master.zip", "signs_lib")
+    )
+
+# Some servers don't recognize the default Python-urllib user agent
+headers = { 'User-Agent':'Mozilla' }
+
+for url, mod in mods:
+    print("Fetching:", mod);
+    request = urllib.request.Request(url, None, headers)
+    with urllib.request.urlopen(request) as response:
+        with zipfile.ZipFile(io.BytesIO(response.read()), 'r') as mod_zip:
+            mod_zip.extractall(worldmods)
+            mod = os.path.normpath(worldmods+"/"+mod)
+            os.rename(mod+"-master", mod)
+minetest_bedrock = os.path.normpath(worldmods+"/"+"minetest_bedrock")
+bedrock = os.path.normpath(worldmods+"/"+"bedrock")
+os.rename(minetest_bedrock, bedrock)
+
+# Remove unneeded/unwanted submods
+prune = ( "dryplants", "along_shore", "molehills", "woodsoils", "bushes", "bushes_classic", "youngtrees", "3dmushrooms", "cavestuff", "poisonivy", "trunks" )
+for ex in prune:
+    ex = "plantlife_modpack/" + ex
+    print("Pruning:", ex)
+    ex = os.path.normpath(worldmods+"/"+ex)
+    shutil.rmtree(ex)

mcimport.py

@@ -50,55 +50,6 @@
         sn.write("        vm:update_map()\n")
         sn.write("end)\n\n")
 
-if not os.path.exists(sys.argv[2]+"/get-mods.sh"):
-    path = sys.argv[2]+"/get-mods.sh"
-    with open(path, "w") as md:
-        md.write('''\
-#!/bin/sh
-
-# run this script to automatically get all the required mods
-
-mods=(
-    https://codeload.github.com/minetest-mods/mesecons/zip/master,mesecons
-    https://codeload.github.com/LNJ2/carpet/zip/master,carpet
-    https://codeload.github.com/minetest-mods/crops/zip/master,crops
-    https://codeload.github.com/minetest-mods/flowerpot/zip/master,flowerpot
-    https://codeload.github.com/minetest-mods/lapis/zip/master,lapis
-    https://codeload.github.com/minetest-mods/quartz/zip/master,quartz
-    https://codeload.github.com/minetest-mods/xdecor/zip/master,xdecor
-    https://codeload.github.com/oOChainLynxOo/hardenedclay/zip/master,hardenedclay
-    https://codeload.github.com/minetest-mods/nether/zip/master,nether
-    https://codeload.github.com/ShadowNinja/minetest_bedrock/zip/master,minetest_bedrock
-    https://gitlab.com/VanessaE/basic_materials/-/archive/master/basic_materials-master.zip,basic_materials
-    https://gitlab.com/VanessaE/biome_lib/-/archive/master/biome_lib-master.zip,biome_lib
-    https://gitlab.com/VanessaE/plantlife_modpack/-/archive/master/plantlife_modpack-master.zip,plantlife_modpack
-    https://gitlab.com/VanessaE/signs_lib/-/archive/master/signs_lib-master.zip,signs_lib
-)
-
-cd worldmods
-
-for item in ${mods[@]} ; do
-(
-    url=$(echo $item | cut -d, -f1)
-    mod=$(echo $item | cut -d, -f2)
-    echo "Fetching: $mod"
-    curl -q -L -o $mod.zip $url
-    unzip -qq $mod.zip
-    rm $mod.zip
-    mv $mod-master $mod
-    mv minetest_bedrock bedrock
-)
-done
-
-# remove unneeded/unwanted submods
-for ex in plantlife_modpack/dryplants plantlife_modpack/along_shore plantlife_modpack/molehills plantlife_modpack/woodsoils plantlife_modpack/bushes plantlife_modpack/bushes_classic plantlife_modpack/youngtrees plantlife_modpack/3dmushrooms plantlife_modpack/cavestuff plantlife_modpack/poisonivy plantlife_modpack/trunks; do
-    echo "Pruning: $ex"
-    rm -rf $ex
-done
-''')
-    st = os.stat(path)
-    os.chmod(path, st.st_mode | stat.S_IXUSR)
-
 mcmap = MCMap(sys.argv[1])
 mtmap = MTMap(sys.argv[2])
 
@@ -107,4 +58,4 @@
 mtmap.save()
 
 print("Conversion finished!\n")
-print("Run \"sh get-mods.sh\" in the new world folder to automatically download all required mods.")
+print("Pass the new world folder to get_mods.py to automatically download all required mods."

mcimport.sh

@@ -40,9 +40,8 @@ if [ $? == 0 ]; then
 	if ! zenity --width=800 --question --title="Download required mods?" --text="The world was succesfully converted. Do you want me to download and install all the required mods now? This should be done for each converted world."; then
 		exit 0
 	fi
-	cd "${HOME}/.minetest/worlds/$OUT"
 	(
-		bash get-mods.sh
+		python3 get_mods.py "${HOME}/.minetest/worlds/$OUT"
 		echo "====================="
 		echo "Finished! You can now close this window!"
 	) | zenity --text-info --width=800 --height=600 --title='Downloading required mods.' --text='Downloading...'