config_tools: replace RstCloth library with class.

Currently, Configurator load fail because it needs to download
RstCloth related packages. This patch defines Doc class to replace
RstCloth library to fix this issue.

Tracked-On: #8395
Signed-off-by: Kunhui-Li <kunhuix.li@intel.com>
Reviewed-by: Junjie Mao <junjie.mao@intel.com>

misc/config_tools/scenario_config/config_summary.py

@@ -4,14 +4,90 @@
 #
 # SPDX-License-Identifier: BSD-3-Clause
 #
-
 import sys
 import argparse
 import logging
-
-from rstcloth import RstCloth
+import typing
+import functools
+import textwrap
 from lxml import etree
 
+t_content = typing.Union[str, typing.List[str]]
+
+
+class Doc:
+    def __init__(self, stream: typing.TextIO = sys.stdout, line_width: int = 72) -> None:
+        self._stream = stream
+        self._line_width = line_width
+
+    def fill(self, text: str, initial_indent: int = 0, subsequent_indent: int = 0) -> str:
+        return textwrap.fill(
+            text=text,
+            width=self._line_width,
+            initial_indent=" " * initial_indent,
+            subsequent_indent=" " * subsequent_indent,
+            expand_tabs=False,
+            break_long_words=False,
+            break_on_hyphens=False,
+        )
+
+    def _add(self, content: t_content) -> None:
+        if isinstance(content, list):
+            self._stream.write("\n".join(content) + "\n")
+        else:
+            self._stream.write(content + "\n")
+
+    def content(self, content: t_content, indent: int = 0) -> None:
+        if isinstance(content, list):
+            content = " ".join(content)
+        self._add(self.fill(content, indent, indent))
+
+    def note(self):
+        marker = ".. {type}::".format(type='note')
+        self._add(marker)
+
+    def newline(self, count: int = 1) -> None:
+        if count == 1:
+            self._add("")
+        else:
+            self._add("\n" * (count - 1))
+
+    def table(self, header: typing.List, data) -> None:
+        column_widths = list()
+        content = list()
+        data = [header] + data
+
+        for i in range(len(header)):
+            column_widths.append(max(list(map(lambda x: len(str(x[i])), data))))
+
+        for j in range(len(data)):
+            overline = "+" + "+".join(["-" * column_widths[i] for i in range(len(header))]) + "+"
+            underline = "+" + "+".join(["=" * column_widths[i] for i in range(len(header))]) + "+"
+            format_raw = "|" + "|".join([str(data[j][i]).ljust(column_widths[i]) for i in range(len(header))]) + "|"
+            if j == 0:
+                content.extend([overline, format_raw, underline])
+            else:
+                content.extend([format_raw, overline])
+
+        if len(data) == 1:
+            content.append(overline)
+
+        self.newline()
+        self._add(content)
+        self.newline()
+
+    def heading(self, text: str, char: str, overline: bool = False) -> None:
+        underline = char * len(text)
+        content = [text, underline]
+        if overline:
+            content.insert(0, underline)
+        self._add(content)
+
+    h1 = functools.partialmethod(heading, char="#")
+    h2 = functools.partialmethod(heading, char="*")
+    h3 = functools.partialmethod(heading, char="=")
+    title = functools.partialmethod(heading, char="=", overline=True)
+
 
 class GenerateRst:
     io_port = {}
@@ -26,7 +102,7 @@ class GenerateRst:
         self.board_etree = etree.parse(board_file_name)
         self.scenario_etree = etree.parse(scenario_file_name)
         self.file = open(rst_file_name, 'w')
-        self.doc = RstCloth(self.file)
+        self.doc = Doc(self.file)
 
     # The rst content is written in three parts according to the first level title
     # 1. Hardware Resource Allocation 2. Inter-VM Connections 3. VM info