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|
# coding: utf-8
"""
this is the source for the yaml utility
"""
from __future__ import print_function
import sys
import os
import io
from textwrap import dedent
from ruamel.std.argparse import ProgramBase, option, sub_parser, version, \
CountAction, SmartFormatter
# from ruamel.appconfig import AppConfig
from . import __version__
import ruamel.yaml
from ruamel.yaml.compat import ordereddict, DBG_TOKEN, DBG_EVENT, DBG_NODE
from ruamel.yaml.configobjwalker import configobj_walker
def yaml_to_html2(code):
buf = io.StringIO()
buf.write(u'<HTML>\n')
buf.write(u'<HEAD>\n')
buf.write(u'</HEAD>\n')
buf.write(u'<BODY>\n')
buf.write(u'<TABLE>\n')
if isinstance(code, dict):
for k in code:
buf.write(u' <TR>\n')
for x in [k] + code[k]:
buf.write(u' <TD>{0}</TD>\n'.format(x))
buf.write(u' </TR>\n')
buf.write(u'<TABLE>\n')
buf.write(u'</BODY>\n')
buf.write(u'</HTML>\n')
return buf.getvalue()
def yaml_to_html(code, level):
if level == 2:
return yaml_to_html2(code)
elif level == 3:
return yaml_to_html3(code)
raise NotImplementedError
class YAML:
def __init__(self, args, config):
self._args = args
self._config = config
def from_ini(self):
try:
from configobj import ConfigObj
except ImportError:
print("to convert from .ini you need to install configobj:")
print(" pip install configobj:")
sys.exit(1)
errors = 0
doc = []
cfg = ConfigObj(open(self._args.file))
for line in configobj_walker(cfg):
doc.append(line)
joined = '\n'.join(doc)
rto = self.round_trip_single(joined)
if self._args.basename:
out_fn = os.path.splitext(self._args.file)[0] + '.yaml'
if self._args.verbose > 0:
print('writing', out_fn)
with open(out_fn, 'w') as fp:
print(rto, end='', file=fp) # already has eol at eof
else:
print(rto, end='') # already has eol at eof
# print()
# if rto != joined:
# self.diff(joined, rto, "test.ini")
return 1 if errors else 0
def test(self):
self._args.event = self._args.node = True
dbg = 0
if self._args.event:
dbg |= DBG_EVENT
if self._args.node:
dbg |= DBG_NODE
os.environ['YAMLDEBUG'] = str(dbg)
if False:
x = ruamel.yaml.comment.Comment()
print(sys.getsizeof(x))
return
def print_input(input):
print(input, end='')
print('-' * 15)
def print_tokens(input):
print('Tokens (from scanner) ' + '#' * 50)
tokens = ruamel.yaml.scan(input, ruamel.yaml.RoundTripLoader)
for idx, token in enumerate(tokens):
# print(token.start_mark)
# print(token.end_mark)
print("{0:2} {1}".format(idx, token))
def rt_events(input):
dumper = ruamel.yaml.RoundTripDumper
events = ruamel.yaml.parse(input, ruamel.yaml.RoundTripLoader)
print(ruamel.yaml.emit(events, indent=False, Dumper=dumper))
def rt_nodes(input):
dumper = ruamel.yaml.RoundTripDumper
nodes = ruamel.yaml.compose(input, ruamel.yaml.RoundTripLoader)
print(ruamel.yaml.serialize(nodes, indent=False, Dumper=dumper))
def print_events(input):
print('Events (from parser) ' + '#' * 50)
events = ruamel.yaml.parse(input, ruamel.yaml.RoundTripLoader)
for idx, event in enumerate(events):
print("{0:2} {1}".format(idx, event))
def print_nodes(input):
print('Nodes (from composer) ' + '#' * 50)
x = ruamel.yaml.compose(input, ruamel.yaml.RoundTripLoader)
x.dump() # dump the node
input = dedent("""
application: web2py
version: 1
runtime: python27
api_version: 1
threadsafe: false
default_expiration: "24h"
handlers:
- url: /(?P<a>.+?)/static/(?P<b>.+)
static_files: 'applications/\\1/static/\\2'
upload: applications/(.+?)/static/(.+)
secure: optional
""")
input = dedent("""\
# comment A
a: [b, c, d] # comment B
j: [k, l, m] # comment C
""")
Xinput = dedent("""\
# comment A
- {a: 1, b: hallo} # comment B
- {j: fka, k: 42} # comment C
""")
Xinput = dedent("""\
# comment A
- {a: 1, b: hallo}
- {j: fka, k: 42}
""")
Xinput = dedent("""\
# C start a
# C start b
- abc # abc comment
- ghi
- klm # klm comment
# C end a
# C end b
""")
print_input(input)
print_tokens(input)
print_events(input)
# rt_events(input)
print_nodes(input)
# rt_nodes(input)
data = ruamel.yaml.load(input, ruamel.yaml.RoundTripLoader)
print('data', data)
if False:
data['american'][0] = 'Fijenoord'
l = data['american']
l = data
if True:
# print type(l), '\n', dir(l)
comment = getattr(l, '_yaml_comment', None)
print('comment_1', comment)
dumper = ruamel.yaml.RoundTripDumper
print('>>>>>>>>>>')
# print(ruamel.yaml.dump(data, default_flow_style=False,
# Dumper=dumper), '===========')
print("{0}=========".format(ruamel.yaml.dump(data, Dumper=dumper)))
comment = getattr(l, '_yaml_comment', None)
print('comment_2', comment)
# test end
def from_json(self):
# use roundtrip to preserver order
errors = 0
docs = []
for file_name in self._args.file:
inp = open(file_name).read()
loader = ruamel.yaml.RoundTripLoader
docs.append(ruamel.yaml.load(inp, loader))
dumper = ruamel.yaml.RoundTripDumper
print(ruamel.yaml.dump_all(docs, Dumper=dumper))
return 1 if errors else 0
def to_html(self):
def vals(x):
if isinstance(x, list):
return x
if isinstance(x, (dict, ordereddict)):
return x.values()
return []
def seek_levels(x, count=0):
my_level = count
sub_level = 0
for v in vals(x):
if v is None:
continue
sub_level = max(sub_level, seek_levels(v, my_level+1))
return max(my_level, sub_level)
inp = open(self._args.file).read()
loader = ruamel.yaml.RoundTripLoader
code = ruamel.yaml.load(inp, loader)
# assert isinstance(code, [ruamel.yaml.comments.CommentedMap])
assert isinstance(code, (dict, list))
levels = seek_levels(code)
if self._args.level:
print("levels:", levels)
return
print(yaml_to_html(code, levels))
def round_trip(self):
errors = 0
warnings = 0
for file_name in self._args.file:
inp = open(file_name).read()
outp = self.round_trip_single(inp)
if inp == outp:
if self._args.verbose > 0:
print(u"{0}: ok".format(file_name))
continue
warnings += 1
stabelize = []
if inp.split() != outp.split():
errors += 1
stabelize.append(u"drops info on round trip")
else:
if self.round_trip_single(outp) == outp:
stabelize.append(u"stabelizes on second round trip")
else:
errors += 1
ncoutp = self.round_trip_single(inp, drop_comment=True)
if self.round_trip_single(ncoutp, drop_comment=True) == ncoutp:
stabelize.append(u"ok without comments")
print("{0}:\n {1}".format(file_name, u', '.join(stabelize)))
self.diff(inp, outp, file_name)
return 2 if errors > 0 else 1 if warnings > 0 else 0
def round_trip_single(self, inp, drop_comment=False):
loader = ruamel.yaml.SafeLoader if drop_comment else \
ruamel.yaml.RoundTripLoader
code = ruamel.yaml.load(inp, loader)
dumper = ruamel.yaml.SafeDumper if drop_comment else \
ruamel.yaml.RoundTripDumper
return ruamel.yaml.dump(code, Dumper=dumper)
def diff(self, inp, outp, file_name):
import difflib
inl = inp.splitlines(True) # True for keepends
outl = outp.splitlines(True)
diff = difflib.unified_diff(inl, outl, file_name, 'round trip YAML')
# 2.6 difflib has trailing space on filename lines %-)
strip_trailing_space = sys.version_info < (2, 7)
for line in diff:
if strip_trailing_space and line[:4] in ['--- ', '+++ ']:
line = line.rstrip() + '\n'
sys.stdout.write(line)
def to_stdout(*args):
sys.stdout.write(' '.join(args))
class YAML_Cmd(ProgramBase):
def __init__(self):
super(YAML_Cmd, self).__init__(
formatter_class=SmartFormatter,
aliases=True,
)
self._config = None
# you can put these on __init__, but subclassing YAML_Cmd
# will cause that to break
@option('--verbose', '-v',
help='increase verbosity level', action=CountAction,
const=1, nargs=0, default=0, global_option=True)
@version('version: ' + __version__)
def _pb_init(self):
# special name for which attribs are included in help
pass
def run(self):
self._yaml = YAML(self._args, self._config)
if self._args.func:
return self._args.func()
def parse_args(self):
# self._config = AppConfig(
# 'yaml',
# filename=AppConfig.check,
# parser=self._parser, # sets --config option
# warning=to_stdout,
# add_save=False, # add a --save-defaults (to config) option
# )
# self._config._file_name can be handed to objects that need
# to get other information from the configuration directory
# self._config.set_defaults()
self._parse_args()
@sub_parser(
aliases=['round-trip'],
help='test round trip on YAML data',
description='test round trip on YAML data',
)
@option('file', nargs='+')
def rt(self):
return self._yaml.round_trip()
@sub_parser(
aliases=['from-json'],
help='convert json to block YAML',
description='convert json to block YAML',
)
@option('file', nargs='+')
def json(self):
return self._yaml.from_json()
@sub_parser(
aliases=['from-ini'],
help='convert .ini/config to block YAML',
description='convert .ini/config to block YAML',
)
@option('--basename', '-b', action='store_true',
help='re-use basename of file for .yaml file, instead of writing'
' to stdout')
@option('file')
def ini(self):
return self._yaml.from_ini()
@sub_parser(
aliases=['to-html'],
help='convert YAML ot html tables',
description="""convert YAML to html tables. If hierarchy is two deep (
list/mapping over list/mapping) this is mapped to one table
If the hierarchy is three deep, a list of 2 deep tables is assumed, but
any non-list/mapp second level items are considered text.
Row level keys are inserted in first column (unless --no-row-key),
item level keys are used as classes for the TD.
""",
)
@option("--level", action='store_true', help="print # levels and exit")
@option('file')
def html(self):
return self._yaml.to_html()
if 'test' in sys.argv:
@sub_parser(
description='internal test function',
)
@option('file', nargs='*')
def test(self):
return self._yaml.test()
def main():
n = YAML_Cmd()
n.parse_args()
sys.exit(n.run())
|
