Merging PR_218 openai_rev package with new streamlit chat app

venv/lib/python3.9/site-packages/streamlit/string_util.py

@@ -0,0 +1,169 @@
+# Copyright (c) Streamlit Inc. (2018-2022) Snowflake Inc. (2022)
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import re
+import textwrap
+from datetime import datetime
+from typing import TYPE_CHECKING, Any, Tuple, cast
+
+from streamlit.emojis import ALL_EMOJIS
+from streamlit.errors import StreamlitAPIException
+
+if TYPE_CHECKING:
+    from streamlit.type_util import SupportsStr
+
+
+# The ESCAPED_EMOJI list is sorted in descending order to make that longer emoji appear
+# first in the regex compiled below. This ensures that we grab the full emoji in a
+# multi-character emoji sequence that starts with a shorter emoji (emoji are weird...).
+ESCAPED_EMOJI = [re.escape(e) for e in sorted(ALL_EMOJIS, reverse=True)]
+EMOJI_EXTRACTION_REGEX = re.compile(f"^({'|'.join(ESCAPED_EMOJI)})[_ -]*(.*)")
+
+
+def decode_ascii(string: bytes) -> str:
+    """Decodes a string as ascii."""
+    return string.decode("ascii")
+
+
+def clean_text(text: "SupportsStr") -> str:
+    """Convert an object to text, dedent it, and strip whitespace."""
+    return textwrap.dedent(str(text)).strip()
+
+
+def is_emoji(text: str) -> bool:
+    """Check if input string is a valid emoji."""
+    return text.replace("\U0000FE0F", "") in ALL_EMOJIS
+
+
+def extract_leading_emoji(text: str) -> Tuple[str, str]:
+    """Return a tuple containing the first emoji found in the given string and
+    the rest of the string (minus an optional separator between the two).
+    """
+    re_match = re.search(EMOJI_EXTRACTION_REGEX, text)
+    if re_match is None:
+        return "", text
+
+    # This cast to Any+type annotation weirdness is done because
+    # cast(re.Match[str], ...) explodes at runtime since Python interprets it
+    # as an attempt to index into re.Match instead of as a type annotation.
+    re_match: re.Match[str] = cast(Any, re_match)
+    return re_match.group(1), re_match.group(2)
+
+
+def escape_markdown(raw_string: str) -> str:
+    r"""Returns a new string which escapes all markdown metacharacters.
+
+    Args
+    ----
+    raw_string : str
+        A string, possibly with markdown metacharacters, e.g. "1 * 2"
+
+    Returns
+    -------
+    A string with all metacharacters escaped.
+
+    Examples
+    --------
+    ::
+        escape_markdown("1 * 2") -> "1 \\* 2"
+    """
+    metacharacters = ["\\", "*", "-", "=", "`", "!", "#", "|"]
+    result = raw_string
+    for character in metacharacters:
+        result = result.replace(character, "\\" + character)
+    return result
+
+
+TEXTCHARS = bytearray({7, 8, 9, 10, 12, 13, 27} | set(range(0x20, 0x100)) - {0x7F})
+
+
+def is_binary_string(inp):
+    """Guess if an input bytesarray can be encoded as a string."""
+    # From https://stackoverflow.com/a/7392391
+    return bool(inp.translate(None, TEXTCHARS))
+
+
+def clean_filename(name: str) -> str:
+    """
+    Taken from https://github.com/django/django/blob/196a99da5d9c4c33a78259a58d38fb114a4d2ee8/django/utils/text.py#L225-L238
+
+    Return the given string converted to a string that can be used for a clean
+    filename. Remove leading and trailing spaces; convert other spaces to
+    underscores; and remove anything that is not an alphanumeric, dash,
+    underscore, or dot.
+    """
+    s = str(name).strip().replace(" ", "_")
+    s = re.sub(r"(?u)[^-\w.]", "", s)
+
+    if s in {"", ".", ".."}:
+        raise StreamlitAPIException("Could not derive file name from '%s'" % name)
+    return s
+
+
+def snake_case_to_camel_case(snake_case_string: str) -> str:
+    """Transform input string from snake_case to CamelCase."""
+    words = snake_case_string.split("_")
+    capitalized_words_arr = []
+
+    for word in words:
+        if word:
+            try:
+                capitalized_words_arr.append(word.title())
+            except Exception:
+                capitalized_words_arr.append(word)
+    return "".join(capitalized_words_arr)
+
+
+def append_date_time_to_string(input_string: str) -> str:
+    """Append datetime string to input string.
+    Returns datetime string if input is empty string.
+    """
+    now = datetime.now()
+
+    if not input_string:
+        return now.strftime("%Y-%m-%d_%H-%M-%S")
+    else:
+        return f'{input_string}_{now.strftime("%Y-%m-%d_%H-%M-%S")}'
+
+
+def generate_download_filename_from_title(title_string: str) -> str:
+    """Generated download filename from page title string."""
+    title_string = title_string.replace(" · Streamlit", "")
+    file_name_string = clean_filename(title_string)
+    title_string = snake_case_to_camel_case(file_name_string)
+    return append_date_time_to_string(title_string)
+
+
+def simplify_number(num: int) -> str:
+    """Simplifies number into Human readable format, returns str"""
+    num_converted = float("{:.2g}".format(num))
+    magnitude = 0
+    while abs(num_converted) >= 1000:
+        magnitude += 1
+        num_converted /= 1000.0
+    return "{}{}".format(
+        "{:f}".format(num_converted).rstrip("0").rstrip("."),
+        ["", "k", "m", "b", "t"][magnitude],
+    )
+
+
+_OBJ_MEM_ADDRESS = re.compile(r"^\<[a-zA-Z_]+[a-zA-Z0-9<>._ ]* at 0x[0-9a-f]+\>$")
+
+
+def is_mem_address_str(string):
+    """Returns True if the string looks like <foo blarg at 0x15ee6f9a0>."""
+    if _OBJ_MEM_ADDRESS.match(string):
+        return True
+
+    return False