Parse the error codes from the text file if available

The text file was added in PG 9.1. It contains a few errors not available
in the SGML.
This commit is contained in:
Daniele Varrazzo 2014-07-31 13:04:53 +01:00
parent 56adc590ff
commit 081bf843d2

View File

@ -16,6 +16,7 @@ The script can be run at a new PostgreSQL release to refresh the module.
# FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
# License for more details.
import re
import sys
import urllib2
from collections import defaultdict
@ -48,7 +49,46 @@ def read_base_file(filename):
raise ValueError("can't find the separator. Is this the right file?")
def parse_errors(url):
def parse_errors_txt(url):
classes = {}
errors = defaultdict(dict)
page = urllib2.urlopen(url)
for line in page:
# Strip comments and skip blanks
line = line.split('#')[0].strip()
if not line:
continue
# Parse a section
m = re.match(r"Section: (Class (..) - .+)", line)
if m:
label, class_ = m.groups()
classes[class_] = label
continue
# Parse an error
m = re.match(r"(.....)\s+(?:E|W|S)\s+ERRCODE_(\S+)(?:\s+(\S+))?$", line)
if m:
errcode, macro, spec = m.groups()
# error 22008 has 2 macros and 1 def: give priority to the def
# as it's the one we used to parse from sgml
if not spec:
if errcode in errors[class_]:
continue
errlabel = macro.upper()
else:
errlabel = spec.upper()
errors[class_][errcode] = errlabel
continue
# We don't expect anything else
raise ValueError("unexpected line:\n%s" % line)
return classes, errors
def parse_errors_sgml(url):
page = BS(urllib2.urlopen(url))
table = page('table')[1]('tbody')[0]
@ -87,14 +127,25 @@ def parse_errors(url):
return classes, errors
errors_url="http://www.postgresql.org/docs/%s/static/errcodes-appendix.html"
errors_sgml_url = \
"http://www.postgresql.org/docs/%s/static/errcodes-appendix.html"
errors_txt_url = \
"http://git.postgresql.org/gitweb/?p=postgresql.git;a=blob_plain;" \
"f=src/backend/utils/errcodes.txt;hb=REL%s_STABLE"
def fetch_errors(versions):
classes = {}
errors = defaultdict(dict)
for version in versions:
c1, e1 = parse_errors(errors_url % version)
print >> sys.stderr, version
tver = tuple(map(int, version.split('.')))
if tver < (9, 1):
c1, e1 = parse_errors_sgml(errors_sgml_url % version)
else:
c1, e1 = parse_errors_txt(
errors_txt_url % version.replace('.', '_'))
classes.update(c1)
for c, cerrs in e1.iteritems():
errors[c].update(cerrs)