#! @PYTHON@
from datetime import date
import getopt
import os
import re
import sys
import xml.dom.minidom
import ovs.json
from ovs.db import error
import ovs.db.schema
argv0 = sys.argv[0]
def textToNroff(s, font=r'\fR'):
def escape(match):
c = match.group(0)
if c == '-':
if font == r'\fB':
return r'\-'
else:
return '-'
if c == '\\':
return r'\e'
elif c == '"':
return r'\(dq'
elif c == "'":
return r'\(cq'
else:
raise error.Error("bad escape")
# Escape - \ " ' as needed by nroff.
s = re.sub('([-"\'\\\\])', escape, s)
if s.startswith('.'):
s = '\\' + s
return s
def escapeNroffLiteral(s):
return r'\fB%s\fR' % textToNroff(s, r'\fB')
def inlineXmlToNroff(node, font):
if node.nodeType == node.TEXT_NODE:
return textToNroff(node.data, font)
elif node.nodeType == node.ELEMENT_NODE:
if node.tagName in ['code', 'em', 'option']:
s = r'\fB'
for child in node.childNodes:
s += inlineXmlToNroff(child, r'\fB')
return s + font
elif node.tagName == 'ref':
s = r'\fB'
if node.hasAttribute('column'):
s += node.attributes['column'].nodeValue
if node.hasAttribute('key'):
s += ':' + node.attributes['key'].nodeValue
elif node.hasAttribute('table'):
s += node.attributes['table'].nodeValue
elif node.hasAttribute('group'):
s += node.attributes['group'].nodeValue
else:
raise error.Error("'ref' lacks required attributes: %s" % node.attributes.keys())
return s + font
elif node.tagName == 'var':
s = r'\fI'
for child in node.childNodes:
s += inlineXmlToNroff(child, r'\fI')
return s + font
else:
raise error.Error("element <%s> unknown or invalid here" % node.tagName)
else:
raise error.Error("unknown node %s in inline xml" % node)
def blockXmlToNroff(nodes, para='.PP'):
s = ''
for node in nodes:
if node.nodeType == node.TEXT_NODE:
s += textToNroff(node.data)
s = s.lstrip()
elif node.nodeType == node.ELEMENT_NODE:
if node.tagName in ['ul', 'ol']:
if s != "":
s += "\n"
s += ".RS\n"
i = 0
for liNode in node.childNodes:
if (liNode.nodeType == node.ELEMENT_NODE
and liNode.tagName == 'li'):
i += 1
if node.tagName == 'ul':
s += ".IP \\(bu\n"
else:
s += ".IP %d. .25in\n" % i
s += blockXmlToNroff(liNode.childNodes, ".IP")
elif (liNode.nodeType != node.TEXT_NODE
or not liNode.data.isspace()):
raise error.Error("<%s> element may only have
children" % node.tagName)
s += ".RE\n"
elif node.tagName == 'dl':
if s != "":
s += "\n"
s += ".RS\n"
prev = "dd"
for liNode in node.childNodes:
if (liNode.nodeType == node.ELEMENT_NODE
and liNode.tagName == 'dt'):
if prev == 'dd':
s += '.TP\n'
else:
s += '.TQ\n'
prev = 'dt'
elif (liNode.nodeType == node.ELEMENT_NODE
and liNode.tagName == 'dd'):
if prev == 'dd':
s += '.IP\n'
prev = 'dd'
elif (liNode.nodeType != node.TEXT_NODE
or not liNode.data.isspace()):
raise error.Error(" element may only have - and
- children")
s += blockXmlToNroff(liNode.childNodes, ".IP")
s += ".RE\n"
elif node.tagName == 'p':
if s != "":
if not s.endswith("\n"):
s += "\n"
s += para + "\n"
s += blockXmlToNroff(node.childNodes, para)
elif node.tagName in ('h1', 'h2', 'h3'):
if s != "":
if not s.endswith("\n"):
s += "\n"
nroffTag = {'h1': 'SH', 'h2': 'SS', 'h3': 'ST'}[node.tagName]
s += ".%s " % nroffTag
for child_node in node.childNodes:
s += inlineXmlToNroff(child_node, r'\fR')
s += "\n"
else:
s += inlineXmlToNroff(node, r'\fR')
else:
raise error.Error("unknown node %s in block xml" % node)
if s != "" and not s.endswith('\n'):
s += '\n'
return s
def typeAndConstraintsToNroff(column):
type = column.type.toEnglish(escapeNroffLiteral)
constraints = column.type.constraintsToEnglish(escapeNroffLiteral)
if constraints:
type += ", " + constraints
if column.unique:
type += " (must be unique within table)"
return type
def columnGroupToNroff(table, groupXml):
introNodes = []
columnNodes = []
for node in groupXml.childNodes:
if (node.nodeType == node.ELEMENT_NODE
and node.tagName in ('column', 'group')):
columnNodes += [node]
else:
if (columnNodes
and not (node.nodeType == node.TEXT_NODE
and node.data.isspace())):
raise error.Error("text follows or inside : %s" % node)
introNodes += [node]
summary = []
intro = blockXmlToNroff(introNodes)
body = ''
for node in columnNodes:
if node.tagName == 'column':
name = node.attributes['name'].nodeValue
column = table.columns[name]
if node.hasAttribute('key'):
key = node.attributes['key'].nodeValue
if node.hasAttribute('type'):
type_string = node.attributes['type'].nodeValue
type_json = ovs.json.from_string(str(type_string))
if type(type_json) in (str, unicode):
raise error.Error("%s %s:%s has invalid 'type': %s"
% (table.name, name, key, type_json))
type_ = ovs.db.types.BaseType.from_json(type_json)
else:
type_ = column.type.value
nameNroff = "%s : %s" % (name, key)
if column.type.value:
typeNroff = "optional %s" % column.type.value.toEnglish()
if (column.type.value.type == ovs.db.types.StringType and
type_.type == ovs.db.types.BooleanType):
# This is a little more explicit and helpful than
# "containing a boolean"
typeNroff += r", either \fBtrue\fR or \fBfalse\fR"
else:
if type_.type != column.type.value.type:
type_english = type_.toEnglish()
if type_english[0] in 'aeiou':
typeNroff += ", containing an %s" % type_english
else:
typeNroff += ", containing a %s" % type_english
constraints = (
type_.constraintsToEnglish(escapeNroffLiteral))
if constraints:
typeNroff += ", %s" % constraints
else:
typeNroff = "none"
else:
nameNroff = name
typeNroff = typeAndConstraintsToNroff(column)
body += '.IP "\\fB%s\\fR: %s"\n' % (nameNroff, typeNroff)
body += blockXmlToNroff(node.childNodes, '.IP') + "\n"
summary += [('column', nameNroff, typeNroff)]
elif node.tagName == 'group':
title = node.attributes["title"].nodeValue
subSummary, subIntro, subBody = columnGroupToNroff(table, node)
summary += [('group', title, subSummary)]
body += '.ST "%s:"\n' % textToNroff(title)
body += subIntro + subBody
else:
raise error.Error("unknown element %s in
" % node.tagName)
return summary, intro, body
def tableSummaryToNroff(summary, level=0):
s = ""
for type, name, arg in summary:
if type == 'column':
s += ".TQ %.2fin\n\\fB%s\\fR\n%s\n" % (3 - level * .25, name, arg)
else:
s += ".TQ .25in\n\\fI%s:\\fR\n.RS .25in\n" % name
s += tableSummaryToNroff(arg, level + 1)
s += ".RE\n"
return s
def tableToNroff(schema, tableXml):
tableName = tableXml.attributes['name'].nodeValue
table = schema.tables[tableName]
s = """.bp
.SH "%s TABLE"
""" % tableName
summary, intro, body = columnGroupToNroff(table, tableXml)
s += intro
s += '.SS "Summary:\n'
s += tableSummaryToNroff(summary)
s += '.SS "Details:\n'
s += body
return s
def docsToNroff(schemaFile, xmlFile, erFile, title=None):
schema = ovs.db.schema.DbSchema.from_json(ovs.json.from_file(schemaFile))
doc = xml.dom.minidom.parse(xmlFile).documentElement
schemaDate = os.stat(schemaFile).st_mtime
xmlDate = os.stat(xmlFile).st_mtime
d = date.fromtimestamp(max(schemaDate, xmlDate))
if title == None:
title = schema.name
# Putting '\" p as the first line tells "man" that the manpage
# needs to be preprocessed by "pic".
s = r''''\" p
.TH %s 5 "%s" "Open vSwitch" "Open vSwitch Manual"
.\" -*- nroff -*-
.de TQ
. br
. ns
. TP "\\$1"
..
.de ST
. PP
. RS -0.15in
. I "\\$1"
. RE
..
.SH NAME
%s \- %s database schema
''' % (title, d.strftime("%B %Y"), textToNroff(title), schema.name)
tables = ""
introNodes = []
tableNodes = []
summary = []
for dbNode in doc.childNodes:
if (dbNode.nodeType == dbNode.ELEMENT_NODE
and dbNode.tagName == "table"):
tableNodes += [dbNode]
name = dbNode.attributes['name'].nodeValue
if dbNode.hasAttribute("title"):
title = dbNode.attributes['title'].nodeValue
else:
title = name + " configuration."
summary += [(name, title)]
else:
introNodes += [dbNode]
s += blockXmlToNroff(introNodes) + "\n"
s += r"""
.SH "TABLE SUMMARY"
.PP
The following list summarizes the purpose of each of the tables in the
\fB%s\fR database. Each table is described in more detail on a later
page.
.IP "Table" 1in
Purpose
""" % schema.name
for name, title in summary:
s += r"""
.TQ 1in
\fB%s\fR
%s
""" % (name, textToNroff(title))
if erFile:
s += """
.\\" check if in troff mode (TTY)
.if t \{
.bp
.SH "TABLE RELATIONSHIPS"
.PP
The following diagram shows the relationship among tables in the
database. Each node represents a table. Tables that are part of the
``root set'' are shown with double borders. Each edge leads from the
table that contains it and points to the table that its value
represents. Edges are labeled with their column names, followed by a
constraint on the number of allowed values: \\fB?\\fR for zero or one,
\\fB*\\fR for zero or more, \\fB+\\fR for one or more. Thick lines
represent strong references; thin lines represent weak references.
.RS -1in
"""
erStream = open(erFile, "r")
for line in erStream:
s += line + '\n'
erStream.close()
s += ".RE\\}\n"
for node in tableNodes:
s += tableToNroff(schema, node) + "\n"
return s
def usage():
print """\
%(argv0)s: ovsdb schema documentation generator
Prints documentation for an OVSDB schema as an nroff-formatted manpage.
usage: %(argv0)s [OPTIONS] SCHEMA XML
where SCHEMA is an OVSDB schema in JSON format
and XML is OVSDB documentation in XML format.
The following options are also available:
--er-diagram=DIAGRAM.PIC include E-R diagram from DIAGRAM.PIC
--title=TITLE use TITLE as title instead of schema name
-h, --help display this help message
-V, --version display version information\
""" % {'argv0': argv0}
sys.exit(0)
if __name__ == "__main__":
try:
try:
options, args = getopt.gnu_getopt(sys.argv[1:], 'hV',
['er-diagram=', 'title=',
'help', 'version'])
except getopt.GetoptError, geo:
sys.stderr.write("%s: %s\n" % (argv0, geo.msg))
sys.exit(1)
er_diagram = None
title = None
for key, value in options:
if key == '--er-diagram':
er_diagram = value
elif key == '--title':
title = value
elif key in ['-h', '--help']:
usage()
elif key in ['-V', '--version']:
print "ovsdb-doc (Open vSwitch) @VERSION@"
else:
sys.exit(0)
if len(args) != 2:
sys.stderr.write("%s: exactly 2 non-option arguments required "
"(use --help for help)\n" % argv0)
sys.exit(1)
# XXX we should warn about undocumented tables or columns
s = docsToNroff(args[0], args[1], er_diagram)
for line in s.split("\n"):
line = line.strip()
if len(line):
print line
except error.Error, e:
sys.stderr.write("%s: %s\n" % (argv0, e.msg))
sys.exit(1)
# Local variables:
# mode: python
# End: