From b7e919e56109acf509253a243b0eb23787b4653c Mon Sep 17 00:00:00 2001
From: Lars Wirzenius <liw@qvarnlabs.com>
Date: Sat, 14 Sep 2019 20:26:45 +0300
Subject: Change: wrap labels automatically

---
 NEWS      |  3 +++
 projgraph | 16 ++++++++++++++++
 2 files changed, 19 insertions(+)

diff --git a/NEWS b/NEWS
index 0f4cf96..1f1dbbe 100644
--- a/NEWS
+++ b/NEWS
@@ -8,6 +8,9 @@ Version 0.15+git, not yet released
   the goal, and automatically finds goal (tasks that nothing depend
   on).
 
+* `projgraph` now wraps label text to lines of up to 20 chars, unless
+  the label already contains a newline.
+
 Version 0.15, released 2018-05-03
 ----------------------------------
 
diff --git a/projgraph b/projgraph
index 2e3b0ca..62c54f2 100755
--- a/projgraph
+++ b/projgraph
@@ -1,10 +1,14 @@
 #!/usr/bin/python3
 
 import sys
+import textwrap
 
 import yaml
 
 
+LABEL_WIDTH = 20
+
+
 unknown = 0
 blocked = 1
 finished = 2
@@ -113,6 +117,17 @@ def set_status(tasks):
         unknown_tasks = find_unknown(tasklist)
 
 
+def wrap_labels(tasks):
+    for name in tasks:
+        task = tasks[name]
+        if 'label' in task:
+            label = task['label']
+            if '\n' not in label:
+                label = textwrap.wrap(label, width=LABEL_WIDTH)
+                label = '\n'.join(label)
+                task['label'] = label
+
+
 obj = yaml.safe_load(sys.stdin)
 ikiwiki = sys.argv[1:] == ['ikiwiki']
 
@@ -122,6 +137,7 @@ else:
     print('digraph "project" {')
 
 tasks = obj.get('tasks', obj)
+wrap_labels(tasks)
 set_status(tasks)
 for name, task in tasks.items():
     print('{} [label="{}"]'.format(name, task['label']))
-- 
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