[PATCH v2 14/24] docs: kernel_include.py: move range logic to a separate function

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Cleanup run() function by moving the range logic to a separate
function.

Here, I ended checking the current Sphinx implementation, as it
has some extra logic for the range check.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@xxxxxxxxxx>
---
 Documentation/sphinx/kernel_include.py | 51 +++++++++++++++++---------
 1 file changed, 33 insertions(+), 18 deletions(-)

diff --git a/Documentation/sphinx/kernel_include.py b/Documentation/sphinx/kernel_include.py
index ef86ee9e79d6..c5f4f34e22cb 100755
--- a/Documentation/sphinx/kernel_include.py
+++ b/Documentation/sphinx/kernel_include.py
@@ -131,6 +131,38 @@ class KernelInclude(Include):
 
         return parser.gen_output()
 
+    def apply_range(self, rawtext):
+        # Get to-be-included content
+        startline = self.options.get('start-line', None)
+        endline = self.options.get('end-line', None)
+        try:
+            if startline or (endline is not None):
+                lines = rawtext.splitlines()
+                rawtext = '\n'.join(lines[startline:endline])
+        except UnicodeError as error:
+            raise self.severe(f'Problem with "{self.name}" directive:\n'
+                              + io.error_string(error))
+        # start-after/end-before: no restrictions on newlines in match-text,
+        # and no restrictions on matching inside lines vs. line boundaries
+        after_text = self.options.get("start-after", None)
+        if after_text:
+            # skip content in rawtext before *and incl.* a matching text
+            after_index = rawtext.find(after_text)
+            if after_index < 0:
+                raise self.severe('Problem with "start-after" option of "%s" '
+                                  "directive:\nText not found." % self.name)
+            rawtext = rawtext[after_index + len(after_text) :]
+        before_text = self.options.get("end-before", None)
+        if before_text:
+            # skip content in rawtext after *and incl.* a matching text
+            before_index = rawtext.find(before_text)
+            if before_index < 0:
+                raise self.severe('Problem with "end-before" option of "%s" '
+                                  "directive:\nText not found." % self.name)
+            rawtext = rawtext[:before_index]
+
+        return rawtext
+
     def run(self):
         """Include a file as part of the content of this reST file."""
         env = self.state.document.settings.env
@@ -185,24 +217,7 @@ class KernelInclude(Include):
         else:
             rawtext = self.read_rawtext(path, encoding)
 
-        # start-after/end-before: no restrictions on newlines in match-text,
-        # and no restrictions on matching inside lines vs. line boundaries
-        after_text = self.options.get("start-after", None)
-        if after_text:
-            # skip content in rawtext before *and incl.* a matching text
-            after_index = rawtext.find(after_text)
-            if after_index < 0:
-                raise self.severe('Problem with "start-after" option of "%s" '
-                                  "directive:\nText not found." % self.name)
-            rawtext = rawtext[after_index + len(after_text) :]
-        before_text = self.options.get("end-before", None)
-        if before_text:
-            # skip content in rawtext after *and incl.* a matching text
-            before_index = rawtext.find(before_text)
-            if before_index < 0:
-                raise self.severe('Problem with "end-before" option of "%s" '
-                                  "directive:\nText not found." % self.name)
-            rawtext = rawtext[:before_index]
+        rawtext = self.apply_range(rawtext)
 
         include_lines = statemachine.string2lines(rawtext, tab_width,
                                                   convert_whitespace=True)
-- 
2.50.1





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