From 11ee8371d588b3bf4430fe80d131deaddb4e3699 Mon Sep 17 00:00:00 2001
From: Sebastian Huber <sebastian.huber@embedded-brains.de>
Date: Mon, 8 Mar 2021 14:26:51 +0100
Subject: sphinxcontent: Add add_simple_table()

---
 rtemsspec/sphinxcontent.py             | 27 ++++++++++++++++++++++++++-
 rtemsspec/tests/test_content_sphinx.py | 18 +++++++++++++++++-
 2 files changed, 43 insertions(+), 2 deletions(-)

diff --git a/rtemsspec/sphinxcontent.py b/rtemsspec/sphinxcontent.py
index e7881cf3..2d214021 100644
--- a/rtemsspec/sphinxcontent.py
+++ b/rtemsspec/sphinxcontent.py
@@ -25,7 +25,7 @@
 # POSSIBILITY OF SUCH DAMAGE.
 
 from contextlib import contextmanager
-from typing import Any, Iterable, Iterator, List, Optional, Union
+from typing import Any, Iterable, Iterator, List, Optional, Sequence, Union
 
 from rtemsspec.content import Content, make_lines, to_camel_case
 from rtemsspec.items import Item, ItemGetValueContext, ItemMapper
@@ -49,6 +49,16 @@ def get_label(name: str) -> str:
     return to_camel_case(name.strip())
 
 
+def _simple_sep(maxi: Iterable[int]) -> str:
+    return " ".join(f"{'=' * val}" for val in maxi)
+
+
+def _simple_row(row: Iterable[str], maxi: Iterable[int]) -> str:
+    line = " ".join("{0:{width}}".format(cell, width=val)
+                    for cell, val in zip(row, maxi))
+    return line.rstrip()
+
+
 class SphinxContent(Content):
     """ This class builds Sphinx content. """
     def __init__(self, section_level: int = 2):
@@ -168,6 +178,21 @@ class SphinxContent(Content):
         """ Opens a comment block. """
         self.push_indent(".. ", "..")
 
+    def add_simple_table(self, rows: Sequence[Iterable[str]]) -> None:
+        """ Adds a simple table. """
+        if not rows:
+            return
+        maxi = tuple(map(len, rows[0]))
+        for row in rows:
+            row_lengths = tuple(map(len, row))
+            maxi = tuple(map(max, zip(maxi, row_lengths)))
+        sep = _simple_sep(maxi)
+        lines = [sep, _simple_row(rows[0], maxi), sep]
+        lines.extend(_simple_row(row, maxi) for row in rows[1:])
+        lines.append(sep)
+        with self.directive("table", options=[":class: longtable"]):
+            self.add(lines)
+
 
 def _get_ref_term(ctx: ItemGetValueContext) -> Any:
     return f":term:`{ctx.value[ctx.key]}`"
diff --git a/rtemsspec/tests/test_content_sphinx.py b/rtemsspec/tests/test_content_sphinx.py
index e45703a9..f9235089 100644
--- a/rtemsspec/tests/test_content_sphinx.py
+++ b/rtemsspec/tests/test_content_sphinx.py
@@ -1,7 +1,7 @@
 # SPDX-License-Identifier: BSD-2-Clause
 """ Unit tests for the rtemsspec.sphinxcontent module. """
 
-# Copyright (C) 2020 embedded brains GmbH (http://www.embedded-brains.de)
+# Copyright (C) 2020, 2021 embedded brains GmbH (http://www.embedded-brains.de)
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions
@@ -270,6 +270,22 @@ def test_comment():
 """
 
 
+def test_simple_table():
+    content = SphinxContent()
+    content.add_simple_table([])
+    assert str(content) == ""
+    content.add_simple_table([["a", "b"], ["cc", "ddd"]])
+    assert str(content) == """.. table::
+    :class: longtable
+
+    == ===
+    a  b
+    == ===
+    cc ddd
+    == ===
+"""
+
+
 def test_substitute(tmpdir):
     config = create_item_cache_config_and_copy_spec(tmpdir,
                                                     "spec-sphinx",
-- 
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