--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/env/lib/python3.7/site-packages/schema_salad/sourceline.py	Thu May 14 14:56:58 2020 -0400
@@ -0,0 +1,368 @@
+from __future__ import absolute_import
+
+import itertools
+import os
+import re
+import traceback
+from typing import (
+    Any,
+    AnyStr,
+    Dict,
+    List,
+    MutableMapping,
+    MutableSequence,
+    Optional,
+    Pattern,
+    Tuple,
+    Type,
+    Union,
+)
+
+import six
+from future.utils import raise_from
+from typing_extensions import Text  # pylint: disable=unused-import
+
+import ruamel.yaml
+from ruamel.yaml.comments import CommentedBase, CommentedMap, CommentedSeq
+
+# move to a regular typing import when Python 3.3-3.6 is no longer supported
+
+
+lineno_re = re.compile(u"^(.*?:[0-9]+:[0-9]+: )(( *)(.*))")
+
+
+def regex_chunk(lines, regex):
+    # type: (List[str], Pattern[str]) -> List[List[str]]
+    lst = list(itertools.dropwhile(lambda x: not regex.match(x), lines))
+    arr = []
+    while lst:
+        ret = [lst[0]] + list(
+            itertools.takewhile(lambda x: not regex.match(x), lst[1:])
+        )
+        arr.append(ret)
+        lst = list(itertools.dropwhile(lambda x: not regex.match(x), lst[1:]))
+    return arr
+
+
+def chunk_messages(message):  # type: (str) -> List[Tuple[int, str]]
+    file_regex = re.compile(r"^(.+:\d+:\d+:)(\s+)(.+)$")
+    item_regex = re.compile(r"^\s*\*\s+")
+    arr = []
+    for chun in regex_chunk(message.splitlines(), file_regex):
+        fst = chun[0]
+        mat = file_regex.match(fst)
+        if mat:
+            place = mat.group(1)
+            indent = len(mat.group(2))
+
+            lst = [mat.group(3)] + chun[1:]
+            if [x for x in lst if item_regex.match(x)]:
+                for item in regex_chunk(lst, item_regex):
+                    msg = re.sub(item_regex, "", "\n".join(item))
+                    arr.append((indent, place + " " + re.sub(r"[\n\s]+", " ", msg)))
+            else:
+                msg = re.sub(item_regex, "", "\n".join(lst))
+                arr.append((indent, place + " " + re.sub(r"[\n\s]+", " ", msg)))
+    return arr
+
+
+def reformat_yaml_exception_message(message):  # type: (str) -> str
+    line_regex = re.compile(r'^\s+in "(.+)", line (\d+), column (\d+)$')
+    fname_regex = re.compile(r"^file://" + re.escape(os.getcwd()) + "/")
+    msgs = message.splitlines()
+    ret = []
+
+    if len(msgs) == 3:
+        msgs = msgs[1:]
+        nblanks = 0
+    elif len(msgs) == 4:
+        c_msg = msgs[0]
+        match = line_regex.match(msgs[1])
+        if match:
+            c_file, c_line, c_column = match.groups()
+            c_file = re.sub(fname_regex, "", c_file)
+            ret.append("{}:{}:{}: {}".format(c_file, c_line, c_column, c_msg))
+
+        msgs = msgs[2:]
+        nblanks = 2
+
+    p_msg = msgs[0]
+    match = line_regex.match(msgs[1])
+    if match:
+        p_file, p_line, p_column = match.groups()
+        p_file = re.sub(fname_regex, "", p_file)
+        ret.append(
+            "{}:{}:{}:{} {}".format(p_file, p_line, p_column, " " * nblanks, p_msg)
+        )
+    return "\n".join(ret)
+
+
+def _add_lc_filename(
+    r, source
+):  # type: (ruamel.yaml.comments.CommentedBase, AnyStr) -> None
+    if isinstance(r, ruamel.yaml.comments.CommentedBase):
+        r.lc.filename = source
+    if isinstance(r, MutableSequence):
+        for d in r:
+            _add_lc_filename(d, source)
+    elif isinstance(r, MutableMapping):
+        for d in six.itervalues(r):
+            _add_lc_filename(d, source)
+
+
+def relname(source):  # type: (Text) -> Text
+    if source.startswith("file://"):
+        source = source[7:]
+        source = os.path.relpath(source)
+    return source
+
+
+def add_lc_filename(
+    r, source
+):  # type: (ruamel.yaml.comments.CommentedBase, Text) -> None
+    _add_lc_filename(r, relname(source))
+
+
+def reflow_all(text, maxline=None):  # type: (Text, Optional[int]) -> Text
+    if maxline is None:
+        maxline = int(os.environ.get("COLUMNS", "100"))
+    maxno = 0
+    for l in text.splitlines():
+        g = lineno_re.match(l)
+        if not g:
+            continue
+        maxno = max(maxno, len(g.group(1)))
+    maxno_text = maxline - maxno
+    msg = []
+    for l in text.splitlines():
+        g = lineno_re.match(l)
+        if not g:
+            msg.append(l)
+            continue
+        pre = g.group(1)
+        reflowed = reflow(g.group(2), maxno_text, g.group(3)).splitlines()
+        msg.extend([pre.ljust(maxno, " ") + r for r in reflowed])
+    return "\n".join(msg)
+
+
+def reflow(text, maxline, shift=""):  # type: (Text, int, Text) -> Text
+    if maxline < 20:
+        maxline = 20
+    if len(text) > maxline:
+        sp = text.rfind(" ", 0, maxline)
+        if sp < 1:
+            sp = text.find(" ", sp + 1)
+            if sp == -1:
+                sp = len(text)
+        if sp < len(text):
+            return "{}\n{}{}".format(
+                text[0:sp], shift, reflow(text[sp + 1 :], maxline, shift)
+            )
+    return text
+
+
+def indent(
+    v, nolead=False, shift=u"  ", bullet=u"  "
+):  # type: (Text, bool, Text, Text) -> Text
+    if nolead:
+        return v.splitlines()[0] + u"\n".join([shift + l for l in v.splitlines()[1:]])
+    else:
+
+        def lineno(i, l):  # type: (int, Text) -> Text
+            r = lineno_re.match(l)
+            if r is not None:
+                return r.group(1) + (bullet if i == 0 else shift) + r.group(2)
+            else:
+                return (bullet if i == 0 else shift) + l
+
+        return u"\n".join([lineno(i, l) for i, l in enumerate(v.splitlines())])
+
+
+def bullets(textlist, bul):  # type: (List[Text], Text) -> Text
+    if len(textlist) == 1:
+        return textlist[0]
+    else:
+        return "\n".join(indent(t, bullet=bul) for t in textlist)
+
+
+def strip_duplicated_lineno(text):  # type: (Text) -> Text
+    """Same as `strip_dup_lineno` but without reflow"""
+    pre = None
+    msg = []
+    for l in text.splitlines():
+        g = lineno_re.match(l)
+        if not g:
+            msg.append(l)
+            continue
+        elif g.group(1) != pre:
+            msg.append(l)
+            pre = g.group(1)
+        else:
+            msg.append(" " * len(g.group(1)) + g.group(2))
+    return "\n".join(msg)
+
+
+def strip_dup_lineno(text, maxline=None):  # type: (Text, Optional[int]) -> Text
+    if maxline is None:
+        maxline = int(os.environ.get("COLUMNS", "100"))
+    pre = None
+    msg = []
+    maxno = 0
+    for l in text.splitlines():
+        g = lineno_re.match(l)
+        if not g:
+            continue
+        maxno = max(maxno, len(g.group(1)))
+
+    for l in text.splitlines():
+        g = lineno_re.match(l)
+        if not g:
+            msg.append(l)
+            continue
+        if g.group(1) != pre:
+            shift = maxno + len(g.group(3))
+            g2 = reflow(g.group(2), maxline - shift, " " * shift)
+            pre = g.group(1)
+            msg.append(pre + " " * (maxno - len(g.group(1))) + g2)
+        else:
+            g2 = reflow(g.group(2), maxline - maxno, " " * (maxno + len(g.group(3))))
+            msg.append(" " * maxno + g2)
+    return "\n".join(msg)
+
+
+def cmap(
+    d,  # type: Union[int, float, str, Text, Dict[Text, Any], List[Dict[Text, Any]]]
+    lc=None,  # type: Optional[List[int]]
+    fn=None,  # type: Optional[Text]
+):  # type: (...) -> Union[int, float, str, Text, CommentedMap, CommentedSeq]
+    if lc is None:
+        lc = [0, 0, 0, 0]
+    if fn is None:
+        fn = "test"
+
+    if isinstance(d, CommentedMap):
+        fn = d.lc.filename if hasattr(d.lc, "filename") else fn
+        for k, v in six.iteritems(d):
+            if d.lc.data is not None and k in d.lc.data:
+                d[k] = cmap(v, lc=d.lc.data[k], fn=fn)
+            else:
+                d[k] = cmap(v, lc, fn=fn)
+        return d
+    if isinstance(d, CommentedSeq):
+        fn = d.lc.filename if hasattr(d.lc, "filename") else fn
+        for k2, v2 in enumerate(d):
+            if d.lc.data is not None and k2 in d.lc.data:
+                d[k2] = cmap(v2, lc=d.lc.data[k2], fn=fn)
+            else:
+                d[k2] = cmap(v2, lc, fn=fn)
+        return d
+    if isinstance(d, MutableMapping):
+        cm = CommentedMap()
+        for k in sorted(d.keys()):
+            v = d[k]
+            if isinstance(v, CommentedBase):
+                uselc = [v.lc.line, v.lc.col, v.lc.line, v.lc.col]
+                vfn = v.lc.filename if hasattr(v.lc, "filename") else fn
+            else:
+                uselc = lc
+                vfn = fn
+            cm[k] = cmap(v, lc=uselc, fn=vfn)
+            cm.lc.add_kv_line_col(k, uselc)
+            cm.lc.filename = fn
+        return cm
+    if isinstance(d, MutableSequence):
+        cs = CommentedSeq()
+        for k3, v3 in enumerate(d):
+            if isinstance(v3, CommentedBase):
+                uselc = [v3.lc.line, v3.lc.col, v3.lc.line, v3.lc.col]
+                vfn = v3.lc.filename if hasattr(v3.lc, "filename") else fn
+            else:
+                uselc = lc
+                vfn = fn
+            cs.append(cmap(v3, lc=uselc, fn=vfn))
+            cs.lc.add_kv_line_col(k3, uselc)
+            cs.lc.filename = fn
+        return cs
+    else:
+        return d
+
+
+class SourceLine(object):
+    def __init__(
+        self,
+        item,  # type: Any
+        key=None,  # type: Optional[Any]
+        raise_type=six.text_type,  # type: Union[Type[six.text_type], Type[Exception]]
+        include_traceback=False,  # type: bool
+    ):  # type: (...) -> None
+        self.item = item
+        self.key = key
+        self.raise_type = raise_type
+        self.include_traceback = include_traceback
+
+    def __enter__(self):  # type: () -> SourceLine
+        return self
+
+    def __exit__(
+        self,
+        exc_type,  # type: Any
+        exc_value,  # type: Any
+        tb,  # type: Any
+    ):  # type: (...) -> None
+        if not exc_value:
+            return
+        if self.include_traceback and six.PY2:
+            # Python2 doesn't actually have chained exceptions, so
+            # fake it by injecting the backtrace into the message.
+            raise_from(
+                self.makeError(
+                    "\n".join(traceback.format_exception(exc_type, exc_value, tb))
+                ),
+                exc_value,
+            )
+        else:
+            raise_from(self.makeError(six.text_type(exc_value)), exc_value)
+
+    def file(self):  # type: () -> Optional[Text]
+        if hasattr(self.item, "lc") and hasattr(self.item.lc, "filename"):
+            return Text(self.item.lc.filename)
+        else:
+            return None
+
+    def start(self):  # type: () -> Optional[Tuple[int, int]]
+        if self.file() is None:
+            return None
+        elif (
+            self.key is None
+            or self.item.lc.data is None
+            or self.key not in self.item.lc.data
+        ):
+            return ((self.item.lc.line or 0) + 1, (self.item.lc.col or 0) + 1)
+        else:
+            return (
+                (self.item.lc.data[self.key][0] or 0) + 1,
+                (self.item.lc.data[self.key][1] or 0) + 1,
+            )
+
+    def end(self):  # type: () -> Optional[Tuple[int, int]]
+        return None
+
+    def makeLead(self):  # type: () -> Text
+        if self.file():
+            lcol = self.start()
+            line, col = lcol if lcol else ("", "")
+            return "{}:{}:{}:".format(self.file(), line, col)
+        else:
+            return ""
+
+    def makeError(self, msg):  # type: (Text) -> Any
+        if not isinstance(self.item, ruamel.yaml.comments.CommentedBase):
+            return self.raise_type(msg)
+        errs = []
+        lead = self.makeLead()
+        for m in msg.splitlines():
+            if bool(lineno_re.match(m)):
+                errs.append(m)
+            else:
+                errs.append("{} {}".format(lead, m))
+        return self.raise_type("\n".join(errs))