author | Claudio Luck <claudio.luck@pep.foundation> |
Thu, 19 Mar 2020 16:45:02 +0100 | |
changeset 62 | 00a196f8d14a |
parent 60 | b19d0a86651b |
child 67 | db1b6e9a6bb7 |
permissions | -rwxr-xr-x |
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#!/usr/bin/env python3 |
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# vim: set fileencoding=utf-8 : |
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"""\ |
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YML/YSLT 2 processor version 6.2 |
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Copyleft (c), 2009-2020 Volker Birk http://fdik.org/yml/ |
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""" |
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import sys, os, codecs, locale |
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import fileinput, unicodedata |
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from optparse import OptionParser |
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try: |
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from lxml import etree |
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except: |
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sys.stderr.write("This program needs lxml, see http://codespeak.net/lxml/\n") |
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sys.exit(1) |
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if __name__ == "__main__": |
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sys.path.insert(0, os.path.dirname(__file__)) |
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from yml2.yml2 import ymlCStyle, comment, oldSyntax |
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from yml2.pyPEG import parse, u |
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import yml2.backend as backend |
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YML_DEFAULT_PATH = [os.path.dirname(backend.__file__)] |
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def printInfo(option, opt_str, value, parser): |
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sys.stdout.write(__doc__) |
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sys.exit(0) |
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class YMLAssert(Exception): pass |
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def w(msg): |
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if isinstance(msg, BaseException): |
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try: |
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msg = str(msg) + "\n" |
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except: |
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msg = u(msg) + "\n" |
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sys.stderr.write(msg) |
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def main(): |
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optParser = OptionParser() |
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optParser.add_option("-C", "--old-syntax", action="store_true", dest="old_syntax", |
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help="syntax of YML 2 version 1.x (compatibility mode)", default=False) |
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optParser.add_option("-D", "--emit-linenumbers", action="store_true", dest="emitlinenumbers", |
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help="emit line numbers into the resulting XML for debugging purposes", default=False) |
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optParser.add_option("--debug", action="store_true", dest="trace", |
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help="switch on tracing to stderr", default=False) |
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optParser.add_option("-d", "--paramdict", dest="params", metavar="PARAMS", |
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help="call X/YSLT script with dictionary PARAMS as parameters") |
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optParser.add_option("-e", "--xpath", dest="xpath", metavar="XPATH", |
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help="execute XPath expression XPATH and print result") |
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optParser.add_option("-E", "--encoding", dest="encoding", metavar="ENCODING", default=locale.getdefaultlocale()[1], |
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help="encoding of input files (default to locale)") |
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optParser.add_option("-I", "--include", dest="includePathText", metavar="INCLUDE_PATH", |
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help="precede YML_PATH by a colon separated INCLUDE_PATH to search for include files") |
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optParser.add_option("-m", "--omit-empty-parm-tags", action="store_true", dest="omitemptyparm", |
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help="does nothing (only there for compatibility reasons)", default=False) |
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optParser.add_option("-M", "--empty-input-document", action="store_true", dest="emptyinput", |
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help="use an empty input document", default=False) |
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optParser.add_option("-n", "--normalization", dest="normalization", metavar="NORMALIZATION", default="NFC", |
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help="Unicode normalization (none, NFD, NFKD, NFC, NFKC, FCD, default is NFC)") |
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optParser.add_option("-o", "--output", dest="outputFile", metavar="FILE", |
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help="place output in file FILE") |
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optParser.add_option("-p", "--parse-only", action="store_true", dest="parseonly", |
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help="parse only, then output pyAST as text to stdout", default=False) |
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optParser.add_option("-P", "--pretty", action="store_true", default=False, |
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help="pretty print output adding whitespace") |
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optParser.add_option("-s", "--stringparamdict", dest="stringparams", metavar="STRINGPARAMS", |
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help="call X/YSLT script with dictionary STRINGPARAMS as string parameters") |
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optParser.add_option("-x", "--xml", action="store_true", default=False, |
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help="input document is XML already") |
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optParser.add_option("-X", "--xslt", dest="xslt", metavar="XSLTSCRIPT", |
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help="execute XSLT script XSLTSCRIPT") |
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optParser.add_option("-y", "--yslt", dest="yslt", metavar="YSLTSCRIPT", |
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help="execute YSLT script YSLTSCRIPT") |
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optParser.add_option("-Y", "--xml2yml", action="store_true", default=False, |
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help="convert XML to normalized YML code") |
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optParser.add_option("-V", "--version", action="callback", callback=printInfo, help="show version info and exit") |
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(options, args) = optParser.parse_args() |
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if options.old_syntax: |
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oldSyntax() |
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if options.trace: |
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backend.enable_tracing = True |
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if options.emitlinenumbers: |
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backend.emitlinenumbers = True |
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if options.includePathText: |
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backend.includePath = options.includePathText.split(':') |
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backend.encoding = options.encoding |
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dirs = os.environ.get('YML_PATH', '.').split(':') + YML_DEFAULT_PATH |
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backend.includePath.extend(dirs) |
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if options.xml2yml: |
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for directory in backend.includePath: |
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name = os.path.join(directory, "xml2yml.ysl2") |
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if os.path.isfile(name): |
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options.yslt = name |
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options.xml = True |
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break |
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else: |
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sys.stderr.write("Error: Stylesheet xml2yml.ysl2 required for --xml2yml not found\n") |
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sys.stderr.write("Please check your YML_PATH\n") |
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sys.exit(1) |
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if (options.xslt and options.yslt) or (options.xslt and options.xpath) or (options.yslt and options.xpath): |
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sys.stderr.write("Cannot combine --xpath, --xslt and --yslt params\n") |
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sys.exit(1) |
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try: |
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ymlC = ymlCStyle() |
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rtext = "" |
62 | 121 |
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122 |
if not options.emptyinput: |
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files = fileinput.input(args, mode="rU", openhook=fileinput.hook_encoded(options.encoding)) |
62 | 124 |
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125 |
if options.xml: |
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126 |
rtext = "" |
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127 |
for line in files: |
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128 |
rtext += line |
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129 |
else: |
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130 |
result = parse(ymlC, files, True, comment) |
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131 |
if options.parseonly: |
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print(result) |
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sys.exit(0) |
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134 |
else: |
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135 |
rtext = backend.finish(result) |
62 | 136 |
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137 |
if not rtext: |
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138 |
rtext = "<empty/>" |
62 | 139 |
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140 |
def ymldebug(context, text): |
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141 |
if options.trace: |
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sys.stderr.write("Debug: " + codecs.encode(u(text), options.encoding) + "\n") |
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143 |
return "" |
62 | 144 |
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145 |
def ymlassert(context, value, msg): |
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146 |
if options.trace: |
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147 |
if not value: |
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148 |
raise YMLAssert(msg) |
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149 |
return "" |
62 | 150 |
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151 |
ymlns = etree.FunctionNamespace("http://fdik.org/yml") |
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152 |
ymlns.prefix = "yml" |
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ymlns['debug'] = ymldebug |
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ymlns['assert'] = ymlassert |
62 | 155 |
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156 |
if options.xpath: |
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157 |
tree = etree.fromstring(rtext) |
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158 |
ltree = tree.xpath(codecs.decode(options.xpath, options.encoding)) |
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159 |
rtext = "" |
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160 |
try: |
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161 |
for rtree in ltree: |
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162 |
rtext += etree.tostring(rtree, pretty_print=options.pretty, encoding=unicode) |
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163 |
except: |
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164 |
rtext = ltree |
62 | 165 |
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166 |
elif options.yslt or options.xslt: |
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167 |
params = {} |
62 | 168 |
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169 |
if options.yslt: |
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170 |
backend.clearAll() |
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171 |
yscript = fileinput.input(options.yslt, mode="rU", openhook=fileinput.hook_encoded(options.encoding)) |
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172 |
yresult = parse(ymlC, yscript, True, comment) |
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173 |
ytext = backend.finish(yresult) |
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|
174 |
else: |
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175 |
yscript = fileinput.input(options.xslt, mode="rU") |
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176 |
ytext = "" |
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|
177 |
for line in yscript: |
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178 |
ytext += line |
62 | 179 |
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180 |
doc = etree.fromstring(rtext) |
62 | 181 |
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182 |
xsltree = etree.XML(ytext, base_url=os.path.abspath(yscript.filename())) |
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183 |
transform = etree.XSLT(xsltree) |
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|
184 |
|
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|
185 |
if options.params: |
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|
186 |
params = eval(options.params) |
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|
187 |
for key, value in params.iteritems(): |
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|
188 |
if type(value) is not str: |
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189 |
params[key] = u(value) |
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|
190 |
if options.stringparams: |
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|
191 |
for key, value in eval(options.stringparams).iteritems(): |
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192 |
params[key] = "'" + u(value) + "'" |
62 | 193 |
|
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194 |
rresult = transform(doc, **params) |
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|
195 |
# lxml is somewhat buggy |
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196 |
try: |
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|
197 |
rtext = u(rresult) |
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|
198 |
except: |
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|
199 |
rtext = etree.tostring(rresult, encoding=unicode) |
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|
200 |
if not rtext: |
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|
201 |
rtext = codecs.decode(str(rresult), "utf-8") |
62 | 202 |
|
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|
203 |
if options.normalization != "none": |
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204 |
rtext = unicodedata.normalize(options.normalization, rtext) |
62 | 205 |
|
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|
206 |
if options.pretty: |
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|
207 |
plaintext = etree.tostring(etree.fromstring(rtext), pretty_print=True, xml_declaration=True, encoding=options.encoding) |
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|
208 |
else: |
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|
209 |
if isinstance(rtext, str): |
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|
210 |
plaintext = codecs.encode(rtext, options.encoding) |
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|
211 |
else: |
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|
212 |
plaintext = rtext |
62 | 213 |
|
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|
214 |
try: |
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|
215 |
if plaintext[-1] == "\n": |
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|
216 |
plaintext = plaintext[:-1] |
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|
217 |
except: pass |
62 | 218 |
|
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|
219 |
if options.outputFile and options.outputFile != "-": |
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|
220 |
outfile = open(options.outputFile, "wb") |
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|
221 |
outfile.write(plaintext) |
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|
222 |
outfile.close() |
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|
223 |
else: |
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|
224 |
sys.stdout.buffer.write(plaintext) |
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|
225 |
if not options.pretty: |
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|
226 |
print() |
62 | 227 |
|
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228 |
except KeyboardInterrupt: |
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229 |
w("\n") |
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|
230 |
sys.exit(1) |
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|
231 |
except YMLAssert as msg: |
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|
232 |
w("YML Assertion failed: " + u(msg) + "\n") |
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|
233 |
sys.exit(2) |
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|
234 |
except KeyError as msg: |
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|
235 |
w("not found: " + u(msg) + "\n") |
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|
236 |
sys.exit(4) |
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|
237 |
except LookupError as msg: |
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|
238 |
w("not found: " + u(msg) + "\n") |
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|
239 |
sys.exit(4) |
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|
240 |
except etree.XMLSyntaxError as e: |
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|
241 |
log = e.error_log.filter_from_level(etree.ErrorLevels.FATAL) |
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242 |
for entry in log: |
58
a218553807ab
pypackage: Merge 2.6.2
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parents:
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w("XML error: " + u(entry.message) + "\n") |
55
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parents:
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sys.exit(5) |
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parents:
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except Exception as msg: |
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parents:
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w(msg) |
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parents:
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sys.exit(5) |
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parents:
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248 |
|
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parents:
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249 |
|
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parents:
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if __name__ == "__main__": |
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parents:
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sys.exit(main()) |
62 | 252 |