From 1314da3ffbaa42aca4a917aef8a230478a22be68 Mon Sep 17 00:00:00 2001
From: Tobias Gruetzmacher <tobias-git@23.gs>
Date: Sun, 10 Mar 2013 23:20:59 +0100
Subject: [PATCH] Add a script that uses the JSON metadata to create ordered
 symlinks.

---
 scripts/order-symlinks.py | 68 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 68 insertions(+)
 create mode 100755 scripts/order-symlinks.py

diff --git a/scripts/order-symlinks.py b/scripts/order-symlinks.py
new file mode 100755
index 000000000..3d1308f91
--- /dev/null
+++ b/scripts/order-symlinks.py
@@ -0,0 +1,68 @@
+#!/usr/bin/env python
+# Copyright (C) 2013 Tobias Gruetzmacher
+"""
+This script takes the JSON file created by 'dosage -o json' and uses the
+metadata to build a symlink farm in the deduced order of the comic. It created
+those in a subdirectory called 'inorder'.
+"""
+from __future__ import print_function
+import sys
+import os
+import codecs
+import json
+
+def jsonFn(d):
+    return os.path.join(d, 'dosage.json')
+
+def loadJson(d):
+    with codecs.open(jsonFn(d), 'r', 'utf-8') as f:
+        data = json.load(f)
+    return data
+
+def prepare_output(d):
+    outDir = os.path.join(d, 'inorder')
+    if not os.path.exists(outDir):
+        os.mkdir(outDir)
+    for f in os.listdir(outDir):
+        f = os.path.join(outDir, f)
+        if os.path.islink(f):
+            os.remove(f)
+    return outDir
+
+def create_symlinks(d):
+    data = loadJson(d)
+    outDir = prepare_output(d)
+
+    unseen = data["pages"].keys()
+    while len(unseen) > 0:
+        latest = work = unseen[0]
+        while work in unseen:
+            unseen.remove(work)
+            if "prev" in data["pages"][work]:
+                work = data["pages"][work]["prev"]
+    print("Latest page: %s" % (latest))
+
+    order = []
+    work = latest
+    while work in data["pages"]:
+        order.extend(data["pages"][work]["images"].values())
+        if "prev" in data["pages"][work]:
+            work = data["pages"][work]["prev"]
+        else:
+            work = None
+    order.reverse()
+
+    for i, img in enumerate(order):
+        os.symlink(os.path.join('..', img), os.path.join(outDir, '%05i_%s' % (i, img)))
+
+
+if __name__ == '__main__':
+    if len(sys.argv) > 1:
+        for d in sys.argv[1:]:
+            if os.path.exists(jsonFn(d)):
+                create_symlinks(d)
+            else:
+                print("No JSON file found in '%s'." % (d))
+    else:
+        print("Usage: %s comic-dirs" % (os.path.basename(sys.argv[0])))
+