JSON exports tags

Closes #78. This changes the export format to

{
tags: {tag: count},
entries: [{…}, {…}, …]
}

CHANGELOG.md

@@ -1,9 +1,12 @@
 Changelog
 =========
 
+#### 1.1.0
+
+* [New] JSON export exports tags as well.
 #### 1.0.5
 
-* Backwards compatibility with `parsedatetime` 0.8.7
+* [Improved] Backwards compatibility with `parsedatetime` 0.8.7
 
 #### 1.0.4
 

jrnl/__init__.py

@@ -7,7 +7,7 @@ jrnl is a simple journal application for your command line.
 """
 
 __title__ = 'jrnl'
-__version__ = '1.0.5'
+__version__ = '1.1.0'
 __author__ = 'Manuel Ebert'
 __license__ = 'MIT License'
 __copyright__ = 'Copyright 2013 Manuel Ebert'

jrnl/exporters.py

@@ -3,10 +3,16 @@
 
 try: import simplejson as json
 except ImportError: import json
+from jrnl import get_tags_count
 
 def to_json(journal):
     """Returns a JSON representation of the Journal."""
-    return json.dumps([e.to_dict() for e in journal.entries], indent=2)
+    tags = get_tags_count(journal)
+    result = {
+        "tags": dict((tag, count) for count, tag in tags),
+        "entries": [e.to_dict() for e in journal.entries]
+    }
+    return json.dumps(result, indent=2)
 
 def to_md(journal):
     """Returns a markdown representation of the Journal"""

jrnl/jrnl.py

@@ -104,23 +104,29 @@ def decrypt(journal, filename=None):
     journal.write(filename)
     print("Journal decrypted to {0}.".format(filename or journal.config['journal']))
 
+
+def get_tags_count(journal):
+    """Returns a set of tuples (count, tag) for all tags present in the journal."""
+    # Astute reader: should the following line leave you as puzzled as me the first time
+    # I came across this construction, worry not and embrace the ensuing moment of enlightment.
+    tags = [tag
+        for entry in journal.entries
+        for tag in set(entry.tags)
+    ]
+    # To be read: [for entry in journal.entries: for tag in set(entry.tags): tag]
+    tag_counts = set([(tags.count(tag), tag) for tag in tags])
+    return tag_counts
+
 def print_tags(journal):
-        """Prints a list of all tags and the number of occurances."""
-        # Astute reader: should the following line leave you as puzzled as me the first time
-        # I came across this construction, worry not and embrace the ensuing moment of enlightment.
-        tags = [tag
-            for entry in journal.entries
-            for tag in set(entry.tags)
-        ]
-        # To be read: [for entry in journal.entries: for tag in set(entry.tags): tag]
-        tag_counts = set([(tags.count(tag), tag) for tag in tags])
-        if not tag_counts:
-            print('[No tags found in journal.]')
-        elif min(tag_counts)[0] == 0:
-            tag_counts = filter(lambda x: x[0] > 1, tag_counts)
-            print('[Removed tags that appear only once.]')
-        for n, tag in sorted(tag_counts, reverse=False):
-            print("{0:20} : {1}".format(tag, n))
+    """Prints a list of all tags and the number of occurances."""
+    tag_counts = get_tags_count(journal)
+    if not tag_counts:
+        print('[No tags found in journal.]')
+    elif min(tag_counts)[0] == 0:
+        tag_counts = filter(lambda x: x[0] > 1, tag_counts)
+        print('[Removed tags that appear only once.]')
+    for n, tag in sorted(tag_counts, reverse=False):
+        print("{0:20} : {1}".format(tag, n))
 
 
 def touch_journal(filename):