Refactor pre-Doxy siphon scripts; VPP-396

- Modularize the code to make the Siphon process easier to
  maintain.
- Move much of the output rendering into Jinja2 templates.
- Add syscfg siphon type for startup config documentation.
- Add sample syscfg documentation.
- Add clicfg and syscfg preamble docs, adapted from their wiki pages.
- Fix sorting of CLI items across multiple directories.

Change-Id: Ib8288fe005adfea68ceed75a38ff8eba25d3cc79
Signed-off-by: Chris Luke <chrisy@flirble.org>

1 files changed, 59 insertions, 0 deletions

diff --git a/doxygen/siphon_templates/clicmd/item_format.md b/doxygen/siphon_templates/clicmd/item_format.md
new file mode 100644
index 00000000000..77d0484bfb7
--- /dev/null
+++ b/doxygen/siphon_templates/clicmd/item_format.md
@@ -0,0 +1,59 @@
+{#
+# Copyright (c) 2016 Comcast Cable Communications Management, LLC.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at:
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#}
+{% set v = item['value'] %}
+{{ "@section %s %s" % (meta['label'], v['path']) }}
+{% if 'short_help' in v %}
+
+### Summary/usage
+
+{% set str = v['short_help'] %}
+{% set period = "." if str[-1] != "." else "" %}
+{% set prefix = "    " if "[" in str or "<" in str or "|" in str else "" %}
+{% set str = this.unescape(str) %}
+{{ "%s%s%s" % (prefix, str, period) }}
+{% endif %}
+{% if 'long_help' in v %}
+{# This is seldom used and will likely be deprecated #}
+
+### Long help
+
+{{ v['long_help'] }}
+{%- endif %}
+{% if 'siphon_block' in item['meta'] %}
+{% set sb = item["meta"]["siphon_block"] %}
+{% if sb %}
+{# Extracted from the code in /*? ... ?*/ blocks #}
+
+### Description
+
+{{ sb }}
+{% endif %}
+{% endif %}
+{% if "item" in meta or "function" in v %}
+{# Gives some developer-useful linking #}
+
+### Declaration and implementation
+{% if "item" in meta %}
+
+{{ "Declaration: @ref %s (@ref %s line %d)" %
+   (meta['item'], meta["file"], item["meta"]["line_start"]) }}
+{% endif %}
+{% if "function" in v %}
+
+{{ "Implementation: @ref %s." % v["function"] }}
+{% endif %}
+{% endif %}
+