util: raise ParseError when parsing dates (BC)

a7dce526c462 refactored util.parsedate in order to raise ValueError instead
of Abort for using with ui.configwith. It causes several problems, putting
arbitrary bytes in ValueError can cause issues with Python 3. Moreover, we
added a function to convert ValueError exceptions back to Abort.

A better approach would be to make parsedate raises ParseError, removing
the convert function and update configwith to also catch ParseError.

The side-effect is that error message when giving an invalid date in CLI
change from:

  abort: invalid date: 'foo bar'

to:

  hg: parse error: invalid date: 'foo bar'

I'm not sure if it's an acceptable change, I found personally the error
message more clear but more verbose too.

mercurial/ui.py

@@ -522,7 +522,7 b' class ui(object):'
             return default
         try:
             return convert(v)
-        except ValueError:
+        except (ValueError, error.ParseError):
             if desc is None:
                 desc = convert.__name__
             raise error.ConfigError(_("%s.%s is not a valid %s ('%s')")
@@ -607,7 +607,7 b' class ui(object):'
         (0, 0)
         """
         if self.config(section, name, default, untrusted):
-            return self.configwith(util.rawparsedate, section, name, default,
+            return self.configwith(util.parsedate, section, name, default,
                                    'date', untrusted)
         return default
 

mercurial/util.py

@@ -1924,9 +1924,6 b' def parsedate(date, formats=None, bias=N'
     The date may be a "unixtime offset" string or in one of the specified
     formats. If the date already is a (unixtime, offset) tuple, it is returned.
 
-    This function calls rawparsedate and convert ValueError to Abort for
-    functions that needs higher level exception.
-
     >>> parsedate(' today ') == parsedate(\
                                   datetime.date.today().strftime('%b %d'))
     True
@@ -1941,20 +1938,6 b' def parsedate(date, formats=None, bias=N'
     >>> tz == strtz
     True
     """
-    try:
-        return rawparsedate(date, formats=formats, bias=bias)
-    except ValueError as exception:
-        raise Abort(str(exception))
-
-def rawparsedate(date, formats=None, bias=None):
-    """parse a localized date/time and return a (unixtime, offset) tuple.
-
-    The date may be a "unixtime offset" string or in one of the specified
-    formats. If the date already is a (unixtime, offset) tuple, it is returned.
-
-    See docstring of parsedate for example.
-    Raise ValueError for invalid date value.
-    """
     if bias is None:
         bias = {}
     if not date:
@@ -2001,15 +1984,15 b' def rawparsedate(date, formats=None, bia'
             else:
                 break
         else:
-            raise ValueError(_('invalid date: %r') % date)
+            raise error.ParseError(_('invalid date: %r') % date)
     # validate explicit (probably user-specified) date and
     # time zone offset. values must fit in signed 32 bits for
     # current 32-bit linux runtimes. timezones go from UTC-12
     # to UTC+14
     if when < -0x80000000 or when > 0x7fffffff:
-        raise ValueError(_('date exceeds 32 bits: %d') % when)
+        raise error.ParseError(_('date exceeds 32 bits: %d') % when)
     if offset < -50400 or offset > 43200:
-        raise ValueError(_('impossible time zone offset: %d') % offset)
+        raise error.ParseError(_('impossible time zone offset: %d') % offset)
     return when, offset
 
 def matchdate(date):

tests/test-commit.t

@@ -15,20 +15,20 b' commit date test'
   $ hg commit -d '0 0' -m commit-1
   $ echo foo >> foo
   $ hg commit -d '1 4444444' -m commit-3
-  abort: impossible time zone offset: 4444444
+  hg: parse error: impossible time zone offset: 4444444
   [255]
   $ hg commit -d '1	15.1' -m commit-4
-  abort: invalid date: '1\t15.1'
+  hg: parse error: invalid date: '1\t15.1'
   [255]
   $ hg commit -d 'foo bar' -m commit-5
-  abort: invalid date: 'foo bar'
+  hg: parse error: invalid date: 'foo bar'
   [255]
   $ hg commit -d ' 1 4444' -m commit-6
   $ hg commit -d '111111111111 0' -m commit-7
-  abort: date exceeds 32 bits: 111111111111
+  hg: parse error: date exceeds 32 bits: 111111111111
   [255]
   $ hg commit -d '-111111111111 0' -m commit-7
-  abort: date exceeds 32 bits: -111111111111
+  hg: parse error: date exceeds 32 bits: -111111111111
   [255]
   $ echo foo >> foo
   $ hg commit -d '1901-12-13 20:45:52 +0000' -m commit-7-2
@@ -38,10 +38,10 b' commit date test'
   3 1901-12-13 20:45:52 +0000
   2 1901-12-13 20:45:52 +0000
   $ hg commit -d '1901-12-13 20:45:51 +0000' -m commit-7
-  abort: date exceeds 32 bits: -2147483649
+  hg: parse error: date exceeds 32 bits: -2147483649
   [255]
   $ hg commit -d '-2147483649 0' -m commit-7
-  abort: date exceeds 32 bits: -2147483649
+  hg: parse error: date exceeds 32 bits: -2147483649
   [255]
 
 commit added file that has been deleted

tests/test-glog.t

@@ -1513,7 +1513,7 b' glog always reorders nodes which explain'
       ('symbol', 'date')
       ('string', '2 0 to 4 0')))
   $ hg log -G -d 'brace ) in a date'
-  abort: invalid date: 'brace ) in a date'
+  hg: parse error: invalid date: 'brace ) in a date'
   [255]
   $ testlog --prune 31 --prune 32
   []

tests/test-parse-date.t

@@ -17,13 +17,13 b' This runs with TZ="GMT"'
   $ hg ci -d "1150000000 14400" -m "rev 4 (merge)"
   $ echo "fail" >> a
   $ hg ci -d "should fail" -m "fail"
-  abort: invalid date: 'should fail'
+  hg: parse error: invalid date: 'should fail'
   [255]
   $ hg ci -d "100000000000000000 1400" -m "fail"
-  abort: date exceeds 32 bits: 100000000000000000
+  hg: parse error: date exceeds 32 bits: 100000000000000000
   [255]
   $ hg ci -d "100000 1400000" -m "fail"
-  abort: impossible time zone offset: 1400000
+  hg: parse error: impossible time zone offset: 1400000
   [255]
 
 Check with local timezone other than GMT and with DST

tests/test-revset.t

@@ -413,7 +413,7 b' quoting needed'
   hg: parse error: invalid \x escape
   [255]
   $ log 'date(tip)'
-  abort: invalid date: 'tip'
+  hg: parse error: invalid date: 'tip'
   [255]
   $ log '0:date'
   abort: unknown revision 'date'!