notmuch/devel/schemata
2012-02-27 22:32:49 -04:00

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This file describes the schemata used for notmuch's structured output
format (currently JSON).
[]'s indicate lists. List items can be marked with a '?', meaning
they are optional; or a '*', meaning there can be zero or more of that
item. {}'s indicate an object that maps from field identifiers to
values. An object field marked '?' is optional. |'s indicate
alternates (e.g., int|string means something can be an int or a
string).
Common non-terminals
--------------------
# Number of seconds since the Epoch
unix_time = int
# Thread ID, sans "thread:"
threadid = string
# Message ID, sans "id:"
messageid = string
notmuch show schema
-------------------
# A top-level set of threads (do_show)
# Returned by notmuch show without a --part argument
thread_set = [thread*]
# Top-level messages in a thread (show_messages)
thread = [thread_node*]
# A message and its replies (show_messages)
thread_node = [
message?, # present if --entire-thread or matched
[thread_node*] # children of message
]
# A message (show_message)
message = {
# (format_message_json)
id: messageid,
match: bool,
filename: string,
timestamp: unix_time, # date header as unix time
date_relative: string, # user-friendly timestamp
tags: [string*],
headers: headers,
body: [part]
}
# A MIME part (show_message_body)
part = {
# format_part_start_json
id: int|string, # part id (currently DFS part number)
# format_part_encstatus_json
encstatus?: encstatus,
# format_part_sigstatus_json
sigstatus?: sigstatus,
# format_part_content_json
content-type: string,
content-id?: string,
# if content-type starts with "multipart/":
content: [part*],
# if content-type is "message/rfc822":
content: [{headers: headers, body: [part]}],
# otherwise (leaf parts):
filename?: string,
content-charset?: string,
# A leaf part's body content is optional, but may be included if
# it can be correctly encoded as a string. Consumers should use
# this in preference to fetching the part content separately.
content?: string
}
# The headers of a message (format_headers_json with raw headers) or
# a part (format_headers_message_part_json with pretty-printed headers)
headers = {
Subject: string,
From: string,
To?: string,
Cc?: string,
Bcc?: string,
Date: string
}
# Encryption status (format_part_encstatus_json)
encstatus = [{status: "good"|"bad"}]
# Signature status (format_part_sigstatus_json)
sigstatus = [signature*]
signature = {
# signature_status_to_string
status: "none"|"good"|"bad"|"error"|"unknown",
# if status is "good":
fingerprint?: string,
created?: unix_time,
expires?: unix_time,
userid?: string
# if status is not "good":
keyid?: string
# if the signature has errors:
errors?: int
}
notmuch search schema
---------------------
# --output=summary
summary = [thread*]
# --output=threads
threads = [threadid*]
# --output=messages
messages = [messageid*]
# --output=files
files = [string*]
# --output=tags
tags = [string*]
thread = {
thread: threadid,
timestamp: unix_time,
date_relative: string, # user-friendly timestamp
matched: int, # number of matched messages
total: int, # total messages in thread
authors: string, # comma-separated names with | between
# matched and unmatched
subject: string
}