Template exporting FTW

features/data/templates/sample.template

@@ -0,0 +1,19 @@
+---
+extension: txt
+---
+
+{% block journal %}
+{% for entry in entries %}
+{% include entry %}
+{% endfor %}
+
+{% endblock %}
+
+{% block entry %}
+{{ entry.title }}
+{{ "-" * len(entry.title) }}
+
+{{ entry.body }}
+
+{% endblock %}
+`

features/exporting.feature

@@ -27,6 +27,23 @@ Feature: Exporting a Journal
         and the output should be parsable as json
         and the json output should contain entries.0.uuid = "4BB1F46946AD439996C9B59DE7C4DDC1"
 
+    Scenario: Exporting using custom templates
+        Given we use the config "basic.yaml"
+        Given we load template "sample.template"
+        When we run "jrnl --export sample"
+        Then the output should be
+        """
+        My first entry.
+        ---------------
+
+        Everything is alright
+
+        Life is good.
+        -------------
+
+        But I'm better.
+        """
+
     Scenario: Increasing Headings on Markdown export
         Given we use the config "markdown-headings-335.yaml"
         When we run "jrnl --export markdown"

features/steps/core.py

@@ -2,7 +2,7 @@ from __future__ import unicode_literals
 from __future__ import absolute_import
 
 from behave import given, when, then
-from jrnl import cli, install, Journal, util
+from jrnl import cli, install, Journal, util, plugins
 from jrnl import __version__
 from dateutil import parser as date_parser
 from collections import defaultdict
@@ -13,8 +13,8 @@ import keyring
 
 
 class TestKeyring(keyring.backend.KeyringBackend):
-    """A test keyring that just stores its valies in a hash
-    """
+    """A test keyring that just stores its valies in a hash"""
+
     priority = 1
     keys = defaultdict(dict)
 
@@ -97,6 +97,13 @@ def run(context, command):
         context.exit_status = e.code
 
 
+@given('we load template "{filename}"')
+def load_template(context, filename):
+    full_path = os.path.join("features/data/templates", filename)
+    exporter = plugins.template_exporter.__exporter_from_file(full_path)
+    plugins.__exporter_types[exporter.names[0]] = exporter
+
+
 @when('we set the keychain password of "{journal}" to "{password}"')
 def set_keychain(context, journal, password):
     keyring.set_password('jrnl', journal, password)

jrnl/cli.py

@@ -13,7 +13,6 @@ from . import Journal
 from . import util
 from . import install
 from . import plugins
-from .export import Exporter
 from .util import ERROR_COLOR, RESET_COLOR
 import jrnl
 import argparse
@@ -44,9 +43,9 @@ def parse_args(args=None):
     exporting = parser.add_argument_group('Export / Import', 'Options for transmogrifying your journal')
     exporting.add_argument('-s', '--short', dest='short', action="store_true", help='Show only titles or line containing the search tags')
     exporting.add_argument('--tags', dest='tags', action="store_true", help='Returns a list of all tags and number of occurences')
-    exporting.add_argument('--export', metavar='TYPE', dest='export', choices=plugins.BaseExporter.PLUGIN_NAMES, help='Export your journal. TYPE can be {}.'.format(plugins.BaseExporter.get_plugin_types_string()), default=False, const=None)
+    exporting.add_argument('--export', metavar='TYPE', dest='export', choices=plugins.EXPORT_FORMATS, help='Export your journal. TYPE can be {}.'.format(plugins.util.oxford_list(plugins.EXPORT_FORMATS)), default=False, const=None)
     exporting.add_argument('-o', metavar='OUTPUT', dest='output', help='Optionally specifies output file when using --export. If OUTPUT is a directory, exports each entry into an individual file instead.', default=False, const=None)
-    exporting.add_argument('--import', metavar='TYPE', dest='import_', choices=plugins.BaseImporter.PLUGIN_NAMES, help='Import entries into your journal. TYPE can be {}, and it defaults to jrnl if nothing else is specified.'.format(plugins.BaseImporter.get_plugin_types_string()), default=False, const='jrnl', nargs='?')
+    exporting.add_argument('--import', metavar='TYPE', dest='import_', choices=plugins.IMPORT_FORMATS, help='Import entries into your journal. TYPE can be {}, and it defaults to jrnl if nothing else is specified.'.format(plugins.util.oxford_list(plugins.IMPORT_FORMATS)), default=False, const='jrnl', nargs='?')
     exporting.add_argument('-i', metavar='INPUT', dest='input', help='Optionally specifies input file when using --import.', default=False, const=None)
     exporting.add_argument('--encrypt', metavar='FILENAME', dest='encrypt', help='Encrypts your existing journal with a new password', nargs='?', default=False, const=None)
     exporting.add_argument('--decrypt', metavar='FILENAME', dest='decrypt', help='Decrypts your journal and stores it in plain text', nargs='?', default=False, const=None)
@@ -246,7 +245,7 @@ def run(manual_args=None):
         print(util.py2encode(plugins.get_exporter("tags").export(journal)))
 
     elif args.export is not False:
-        exporter = Exporter(args.export)
+        exporter = plugins.get_exporter(args.export)
         print(exporter.export(journal, args.output))
 
     elif args.encrypt is not False:

jrnl/plugins/__init__.py

@@ -2,57 +2,34 @@
 # encoding: utf-8
 
 from __future__ import absolute_import, unicode_literals
-import glob
-import os
-import importlib
 
+from .text_exporter import TextExporter
+from .jrnl_importer import JRNLImporter
+from .json_exporter import JSONExporter
+from .markdown_exporter import MarkdownExporter
+from .tag_exporter import TagExporter
+from .xml_exporter import XMLExporter
+from .yaml_exporter import YAMLExporter
+from .template_exporter import __all__ as template_exporters
 
-class PluginMeta(type):
+__exporters =[JSONExporter, MarkdownExporter, TagExporter, TextExporter, XMLExporter, YAMLExporter] + template_exporters
+__importers =[JRNLImporter]
 
-    def __init__(cls, name, bases, attrs):
-        """Called when a Plugin derived class is imported"""
-        if not hasattr(cls, 'PLUGINS'):
-            cls.PLUGINS = []
-            cls.PLUGIN_NAMES = []
-        else:
-            cls.__register_plugin(cls)
-
-    def __register_plugin(cls, plugin):
-        """Add the plugin to the plugin list and perform any registration logic"""
-        cls.PLUGINS.append(plugin)
-        cls.PLUGIN_NAMES.extend(plugin.names)
-
-    def get_plugin_types_string(cls):
-        plugin_names = sorted(cls.PLUGIN_NAMES)
-        if not plugin_names:
-            return "(nothing)"
-        elif len(plugin_names) == 1:
-            return plugin_names[0]
-        elif len(plugin_names) == 2:
-            return plugin_names[0] + " or " + plugin_names[1]
-        else:
-            return ', '.join(plugin_names[:-1]) + ", or " + plugin_names[-1]
-
-# This looks a bit arcane, but is basically bilingual speak for defining a
-# class with meta class 'PluginMeta' for both Python 2 and 3.
-BaseExporter = PluginMeta(str('BaseExporter'), (), {'names': []})
-BaseImporter = PluginMeta(str('BaseImporter'), (), {'names': []})
-
-
-for module in glob.glob(os.path.dirname(__file__) + "/*.py"):
-    importlib.import_module("." + os.path.basename(module)[:-3], "jrnl.plugins")
-del module
+__exporter_types = dict([(name, plugin) for plugin in __exporters for name in plugin.names])
+__importer_types = dict([(name, plugin) for plugin in __importers for name in plugin.names])
 
+EXPORT_FORMATS = sorted(__exporter_types.keys())
+IMPORT_FORMATS = sorted(__importer_types.keys())
 
 def get_exporter(format):
-    for exporter in BaseExporter.PLUGINS:
+    for exporter in __exporters:
         if hasattr(exporter, "names") and format in exporter.names:
             return exporter
     return None
 
 
 def get_importer(format):
-    for importer in BaseImporter.PLUGINS:
+    for importer in __importers:
         if hasattr(importer, "names") and format in importer.names:
             return importer
     return None

jrnl/plugins/jrnl_importer.py

@@ -4,10 +4,9 @@
 from __future__ import absolute_import, unicode_literals
 import codecs
 import sys
-from . import BaseImporter
 from .. import util
 
-class JRNLImporter(BaseImporter):
+class JRNLImporter(object):
     """This plugin imports entries from other jrnl files."""
     names = ["jrnl"]
 

jrnl/plugins/template.py

@@ -1,5 +1,6 @@
 import re
 import asteval
+import yaml
 
 VAR_RE = r"[_a-zA-Z][a-zA-Z0-9_]*"
 EXPRESSION_RE = r"[\[\]():.a-zA-Z0-9_]*"
@@ -18,6 +19,15 @@ class Template(object):
         self.clean_template = None
         self.blocks = {}
 
+    @classmethod
+    def from_file(cls, filename):
+        with open(filename) as f:
+            front_matter, body = f.read().strip("-\n").split("---", 2)
+            front_matter = yaml.load(front_matter)
+            template = cls(body)
+        template.__dict__.update(front_matter)
+        return template
+
     def render(self, **vars):
         if self.clean_template is None:
             self._get_blocks()

jrnl/plugins/template_exporter.py

@@ -0,0 +1,49 @@
+#!/usr/bin/env python
+# encoding: utf-8
+
+from __future__ import absolute_import, unicode_literals
+
+from .text_exporter import TextExporter
+from .template import Template
+import os
+from glob import glob
+
+
+class GenericTemplateExporter(TextExporter):
+    """This Exporter can convert entries and journals into text files."""
+
+    @classmethod
+    def export_entry(cls, entry):
+        """Returns a unicode representation of a single entry."""
+        vars = {
+            'entry': entry,
+            'tags': entry.tags
+        }
+        return cls.template.render_block("entry", **vars)
+
+    @classmethod
+    def export_journal(cls, journal):
+        """Returns a unicode representation of an entire journal."""
+        vars = {
+            'journal': journal,
+            'entries': journal.entries,
+            'tags': journal.tags
+        }
+        return cls.template.render_block("journal", **vars)
+
+
+def __exporter_from_file(template_file):
+    """Create a template class from a file"""
+    name = os.path.basename(template_file).replace(".template", "")
+    template = Template.from_file(template_file)
+    return type("{}Exporter".format(name.title()), (GenericTemplateExporter, ), {
+        "names": [name],
+        "extension": template.extension,
+        "template": template
+    })
+
+__all__ = []
+
+# Factory pattern to create Exporter classes for all available templates
+for template_file in glob("jrnl/templates/*.template"):
+    __all__.append(__exporter_from_file(template_file))

jrnl/plugins/text_exporter.py

@@ -3,13 +3,12 @@
 
 from __future__ import absolute_import, unicode_literals
 import codecs
-from . import BaseExporter
 from ..util import u, slugify
 import os
-from ..util import WARNING_COLOR, ERROR_COLOR, RESET_COLOR
+from ..util import ERROR_COLOR, RESET_COLOR
 
 
-class TextExporter(BaseExporter):
+class TextExporter(object):
     """This Exporter can convert entries and journals into text files."""
     names = ["text", "txt"]
     extension = "txt"

jrnl/plugins/util.py

@@ -12,3 +12,16 @@ def get_tags_count(journal):
     # 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 oxford_list(lst):
+    """Return Human-readable list of things obeying the object comma)"""
+    lst = sorted(lst)
+    if not lst:
+        return "(nothing)"
+    elif len(lst) == 1:
+        return lst[0]
+    elif len(lst) == 2:
+        return lst[0] + " or " + lst[1]
+    else:
+        return ', '.join(lst[:-1]) + ", or " + lst[-1]

jrnl/templates/json.template

@@ -1,33 +0,0 @@
----
-extension: json
----
-
-{% block journal %}
-{
-  "tags": {
-   {% for tag in tags %}
-   "{{ tag.name }}": {{ tag.count }}{% if not __last_iteration %},{% endif %}
-   {% endfor %}
-  },
-  "entries": [
-    {% for entry in entries %}
-    {% include entry %}{% if not __last_iteration %},{% endif %}
-    {% endfor %}
-  ]
-}
-{% endblock %}
-
-{% block entry %}
-{
-  "title": "{{ entry.title }}",
-  "body": "{{ entry.body.replace("\n", "\\n") }}",
-  "date": "{{ entry.date.strftime('%Y-%m-%d') }}",
-  "time": "{{ entry.date.strftime('%H:%M') }}",
-  {% if entry.uuid %}
-  "uuid": "{{ entry.uuid }}",
-  {% endif %}
-  "starred": {{ "true" if entry.starred else "false" }}
-}
-{% endblock %}
-
-Hey There

jrnl/templates/sample.template

@@ -0,0 +1,18 @@
+---
+extension: txt
+---
+
+{% block journal %}
+{% for entry in entries %}
+{% include entry %}
+{% endfor %}
+
+{% endblock %}
+
+{% block entry %}
+{{ entry.title }}
+{{ "-" * len(entry.title) }}
+
+{{ entry.body }}
+
+{% endblock %}