[PATCH v3 10/33] scripts/kernel-doc.py: move output classes to a separate file

Mauro Carvalho Chehab
2025-04-08T10:09:56Z

In preparation for letting kerneldoc Sphinx extension to import
Python libraries, move kernel-doc output logic to a separate file.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
---
scripts/kernel-doc.py | 727 +------------------------------
scripts/lib/kdoc/kdoc_output.py | 736 ++++++++++++++++++++++++++++++++
2 files changed, 739 insertions(+), 724 deletions(-)
create mode 100755 scripts/lib/kdoc/kdoc_output.py

diff --git a/scripts/kernel-doc.py b/scripts/kernel-doc.py
index d09ada2d862a..abff78e9160f 100755
--- a/scripts/kernel-doc.py
+++ b/scripts/kernel-doc.py
@@ -2,9 +2,7 @@
# SPDX-License-Identifier: GPL-2.0
# Copyright(c) 2025: Mauro Carvalho Chehab <mchehab@kernel.org>.
#
-# pylint: disable=R0902,R0903,R0904,R0911,R0912,R0913,R0914,R0915,R0917,R1702
-# pylint: disable=C0302,C0103,C0301
-# pylint: disable=C0116,C0115,W0511,W0613
+# pylint: disable=C0103
#
# Converted from the kernel-doc script originally written in Perl
# under GPLv2, copyrighted since 1998 by the following authors:
@@ -102,14 +100,8 @@ documentation comment syntax.
import argparse
import logging
import os
-import re
import sys

-from datetime import datetime
-from pprint import pformat
-
-from dateutil import tz
-
# Import Python modules

LIB_DIR = "lib/kdoc"
@@ -117,721 +109,8 @@ SRC_DIR = os.path.dirname(os.path.realpath(__file__))

sys.path.insert(0, os.path.join(SRC_DIR, LIB_DIR))

-from kdoc_parser import KernelDoc, type_param
-from kdoc_re import Re
-from kdoc_files import KernelFiles
-
-function_pointer = Re(r"([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)", cache=False)
-
-# match expressions used to find embedded type information
-type_constant = Re(r"\b``([^\`]+)``\b", cache=False)
-type_constant2 = Re(r"\%([-_*\w]+)", cache=False)
-type_func = Re(r"(\w+)\(\)", cache=False)
-type_param_ref = Re(r"([\!~\*]?)\@(\w*((\.\w+)|(->\w+))*(\.\.\.)?)", cache=False)
-
-# Special RST handling for func ptr params
-type_fp_param = Re(r"\@(\w+)\(\)", cache=False)
-
-# Special RST handling for structs with func ptr params
-type_fp_param2 = Re(r"\@(\w+->\S+)\(\)", cache=False)
-
-type_env = Re(r"(\$\w+)", cache=False)
-type_enum = Re(r"\&(enum\s*([_\w]+))", cache=False)
-type_struct = Re(r"\&(struct\s*([_\w]+))", cache=False)
-type_typedef = Re(r"\&(typedef\s*([_\w]+))", cache=False)
-type_union = Re(r"\&(union\s*([_\w]+))", cache=False)
-type_member = Re(r"\&([_\w]+)(\.|->)([_\w]+)", cache=False)
-type_fallback = Re(r"\&([_\w]+)", cache=False)
-type_member_func = type_member + Re(r"\(\)", cache=False)
-
-
-class OutputFormat:
- # output mode.
- OUTPUT_ALL = 0 # output all symbols and doc sections
- OUTPUT_INCLUDE = 1 # output only specified symbols
- OUTPUT_EXPORTED = 2 # output exported symbols
- OUTPUT_INTERNAL = 3 # output non-exported symbols
-
- # Virtual member to be overriden at the inherited classes
- highlights = []
-
- def __init__(self):
- """Declare internal vars and set mode to OUTPUT_ALL"""
-
- self.out_mode = self.OUTPUT_ALL
- self.enable_lineno = None
- self.nosymbol = {}
- self.symbol = None
- self.function_table = set()
- self.config = None
-
- def set_config(self, config):
- self.config = config
-
- def set_filter(self, export, internal, symbol, nosymbol, function_table,
- enable_lineno):
- """
- Initialize filter variables according with the requested mode.
-
- Only one choice is valid between export, internal and symbol.
-
- The nosymbol filter can be used on all modes.
- """
-
- self.enable_lineno = enable_lineno
-
- if symbol:
- self.out_mode = self.OUTPUT_INCLUDE
- function_table = symbol
- elif export:
- self.out_mode = self.OUTPUT_EXPORTED
- elif internal:
- self.out_mode = self.OUTPUT_INTERNAL
- else:
- self.out_mode = self.OUTPUT_ALL
-
- if nosymbol:
- self.nosymbol = set(nosymbol)
-
- if function_table:
- self.function_table = function_table
-
- def highlight_block(self, block):
- """
- Apply the RST highlights to a sub-block of text.
- """
-
- for r, sub in self.highlights:
- block = r.sub(sub, block)
-
- return block
-
- def check_doc(self, name):
- """Check if DOC should be output"""
-
- if self.out_mode == self.OUTPUT_ALL:
- return True
-
- if self.out_mode == self.OUTPUT_INCLUDE:
- if name in self.nosymbol:
- return False
-
- if name in self.function_table:
- return True
-
- return False
-
- def check_declaration(self, dtype, name):
- if name in self.nosymbol:
- return False
-
- if self.out_mode == self.OUTPUT_ALL:
- return True
-
- if self.out_mode in [ self.OUTPUT_INCLUDE, self.OUTPUT_EXPORTED ]:
- if name in self.function_table:
- return True
-
- if self.out_mode == self.OUTPUT_INTERNAL:
- if dtype != "function":
- return True
-
- if name not in self.function_table:
- return True
-
- return False
-
- def check_function(self, fname, name, args):
- return True
-
- def check_enum(self, fname, name, args):
- return True
-
- def check_typedef(self, fname, name, args):
- return True
-
- def msg(self, fname, name, args):
-
- dtype = args.get('type', "")
-
- if dtype == "doc":
- self.out_doc(fname, name, args)
- return False
-
- if not self.check_declaration(dtype, name):
- return False
-
- if dtype == "function":
- self.out_function(fname, name, args)
- return False
-
- if dtype == "enum":
- self.out_enum(fname, name, args)
- return False
-
- if dtype == "typedef":
- self.out_typedef(fname, name, args)
- return False
-
- if dtype in ["struct", "union"]:
- self.out_struct(fname, name, args)
- return False
-
- # Warn if some type requires an output logic
- self.config.log.warning("doesn't now how to output '%s' block",
- dtype)
-
- return True
-
- # Virtual methods to be overridden by inherited classes
- def out_doc(self, fname, name, args):
- pass
-
- def out_function(self, fname, name, args):
- pass
-
- def out_enum(self, fname, name, args):
- pass
-
- def out_typedef(self, fname, name, args):
- pass
-
- def out_struct(self, fname, name, args):
- pass
-
-
-class RestFormat(OutputFormat):
- # """Consts and functions used by ReST output"""
-
- highlights = [
- (type_constant, r"``\1``"),
- (type_constant2, r"``\1``"),
-
- # Note: need to escape () to avoid func matching later
- (type_member_func, r":c:type:`\1\2\3\\(\\) <\1>`"),
- (type_member, r":c:type:`\1\2\3 <\1>`"),
- (type_fp_param, r"**\1\\(\\)**"),
- (type_fp_param2, r"**\1\\(\\)**"),
- (type_func, r"\1()"),
- (type_enum, r":c:type:`\1 <\2>`"),
- (type_struct, r":c:type:`\1 <\2>`"),
- (type_typedef, r":c:type:`\1 <\2>`"),
- (type_union, r":c:type:`\1 <\2>`"),
-
- # in rst this can refer to any type
- (type_fallback, r":c:type:`\1`"),
- (type_param_ref, r"**\1\2**")
- ]
- blankline = "\n"
-
- sphinx_literal = Re(r'^[^.].*::$', cache=False)
- sphinx_cblock = Re(r'^\.\.\ +code-block::', cache=False)
-
- def __init__(self):
- """
- Creates class variables.
-
- Not really mandatory, but it is a good coding style and makes
- pylint happy.
- """
-
- super().__init__()
- self.lineprefix = ""
-
- def print_lineno (self, ln):
- """Outputs a line number"""
-
- if self.enable_lineno and ln:
- print(f".. LINENO {ln}")
-
- def output_highlight(self, args):
- input_text = args
- output = ""
- in_literal = False
- litprefix = ""
- block = ""
-
- for line in input_text.strip("\n").split("\n"):
-
- # If we're in a literal block, see if we should drop out of it.
- # Otherwise, pass the line straight through unmunged.
- if in_literal:
- if line.strip(): # If the line is not blank
- # If this is the first non-blank line in a literal block,
- # figure out the proper indent.
- if not litprefix:
- r = Re(r'^(\s*)')
- if r.match(line):
- litprefix = '^' + r.group(1)
- else:
- litprefix = ""
-
- output += line + "\n"
- elif not Re(litprefix).match(line):
- in_literal = False
- else:
- output += line + "\n"
- else:
- output += line + "\n"
-
- # Not in a literal block (or just dropped out)
- if not in_literal:
- block += line + "\n"
- if self.sphinx_literal.match(line) or self.sphinx_cblock.match(line):
- in_literal = True
- litprefix = ""
- output += self.highlight_block(block)
- block = ""
-
- # Handle any remaining block
- if block:
- output += self.highlight_block(block)
-
- # Print the output with the line prefix
- for line in output.strip("\n").split("\n"):
- print(self.lineprefix + line)
-
- def out_section(self, args, out_reference=False):
- """
- Outputs a block section.
-
- This could use some work; it's used to output the DOC: sections, and
- starts by putting out the name of the doc section itself, but that
- tends to duplicate a header already in the template file.
- """
-
- sectionlist = args.get('sectionlist', [])
- sections = args.get('sections', {})
- section_start_lines = args.get('section_start_lines', {})
-
- for section in sectionlist:
- # Skip sections that are in the nosymbol_table
- if section in self.nosymbol:
- continue
-
- if not self.out_mode == self.OUTPUT_INCLUDE:
- if out_reference:
- print(f".. _{section}:\n")
-
- if not self.symbol:
- print(f'{self.lineprefix}**{section}**\n')
-
- self.print_lineno(section_start_lines.get(section, 0))
- self.output_highlight(sections[section])
- print()
- print()
-
- def out_doc(self, fname, name, args):
- if not self.check_doc(name):
- return
-
- self.out_section(args, out_reference=True)
-
- def out_function(self, fname, name, args):
-
- oldprefix = self.lineprefix
- signature = ""
-
- func_macro = args.get('func_macro', False)
- if func_macro:
- signature = args['function']
- else:
- if args.get('functiontype'):
- signature = args['functiontype'] + " "
- signature += args['function'] + " ("
-
- parameterlist = args.get('parameterlist', [])
- parameterdescs = args.get('parameterdescs', {})
- parameterdesc_start_lines = args.get('parameterdesc_start_lines', {})
-
- ln = args.get('ln', 0)
-
- count = 0
- for parameter in parameterlist:
- if count != 0:
- signature += ", "
- count += 1
- dtype = args['parametertypes'].get(parameter, "")
-
- if function_pointer.search(dtype):
- signature += function_pointer.group(1) + parameter + function_pointer.group(3)
- else:
- signature += dtype
-
- if not func_macro:
- signature += ")"
-
- if args.get('typedef') or not args.get('functiontype'):
- print(f".. c:macro:: {args['function']}\n")
-
- if args.get('typedef'):
- self.print_lineno(ln)
- print(" **Typedef**: ", end="")
- self.lineprefix = ""
- self.output_highlight(args.get('purpose', ""))
- print("\n\n**Syntax**\n")
- print(f" ``{signature}``\n")
- else:
- print(f"``{signature}``\n")
- else:
- print(f".. c:function:: {signature}\n")
-
- if not args.get('typedef'):
- self.print_lineno(ln)
- self.lineprefix = " "
- self.output_highlight(args.get('purpose', ""))
- print()
-
- # Put descriptive text into a container (HTML ) to help set
- # function prototypes apart
- self.lineprefix = " "
-
- if parameterlist:
- print(".. container:: kernelindent\n")
- print(f"{self.lineprefix}**Parameters**\n")
-
- for parameter in parameterlist:
- parameter_name = Re(r'\[.*').sub('', parameter)
- dtype = args['parametertypes'].get(parameter, "")
-
- if dtype:
- print(f"{self.lineprefix}``{dtype}``")
- else:
- print(f"{self.lineprefix}``{parameter}``")
-
- self.print_lineno(parameterdesc_start_lines.get(parameter_name, 0))
-
- self.lineprefix = " "
- if parameter_name in parameterdescs and \
- parameterdescs[parameter_name] != KernelDoc.undescribed:
-
- self.output_highlight(parameterdescs[parameter_name])
- print()
- else:
- print(f"{self.lineprefix}*undescribed*\n")
- self.lineprefix = " "
-
- self.out_section(args)
- self.lineprefix = oldprefix
-
- def out_enum(self, fname, name, args):
-
- oldprefix = self.lineprefix
- name = args.get('enum', '')
- parameterlist = args.get('parameterlist', [])
- parameterdescs = args.get('parameterdescs', {})
- ln = args.get('ln', 0)
-
- print(f"\n\n.. c:enum:: {name}\n")
-
- self.print_lineno(ln)
- self.lineprefix = " "
- self.output_highlight(args.get('purpose', ''))
- print()
-
- print(".. container:: kernelindent\n")
- outer = self.lineprefix + " "
- self.lineprefix = outer + " "
- print(f"{outer}**Constants**\n")
-
- for parameter in parameterlist:
- print(f"{outer}``{parameter}``")
-
- if parameterdescs.get(parameter, '') != KernelDoc.undescribed:
- self.output_highlight(parameterdescs[parameter])
- else:
- print(f"{self.lineprefix}*undescribed*\n")
- print()
-
- self.lineprefix = oldprefix
- self.out_section(args)
-
- def out_typedef(self, fname, name, args):
-
- oldprefix = self.lineprefix
- name = args.get('typedef', '')
- ln = args.get('ln', 0)
-
- print(f"\n\n.. c:type:: {name}\n")
-
- self.print_lineno(ln)
- self.lineprefix = " "
-
- self.output_highlight(args.get('purpose', ''))
-
- print()
-
- self.lineprefix = oldprefix
- self.out_section(args)
-
- def out_struct(self, fname, name, args):
-
- name = args.get('struct', "")
- purpose = args.get('purpose', "")
- declaration = args.get('definition', "")
- dtype = args.get('type', "struct")
- ln = args.get('ln', 0)
-
- parameterlist = args.get('parameterlist', [])
- parameterdescs = args.get('parameterdescs', {})
- parameterdesc_start_lines = args.get('parameterdesc_start_lines', {})
-
- print(f"\n\n.. c:{dtype}:: {name}\n")
-
- self.print_lineno(ln)
-
- oldprefix = self.lineprefix
- self.lineprefix += " "
-
- self.output_highlight(purpose)
- print()
-
- print(".. container:: kernelindent\n")
- print(f"{self.lineprefix}**Definition**::\n")
-
- self.lineprefix = self.lineprefix + " "
-
- declaration = declaration.replace("\t", self.lineprefix)
-
- print(f"{self.lineprefix}{dtype} {name}" + ' {')
- print(f"{declaration}{self.lineprefix}" + "};\n")
-
- self.lineprefix = " "
- print(f"{self.lineprefix}**Members**\n")
- for parameter in parameterlist:
- if not parameter or parameter.startswith("#"):
- continue
-
- parameter_name = parameter.split("[", maxsplit=1)[0]
-
- if parameterdescs.get(parameter_name) == KernelDoc.undescribed:
- continue
-
- self.print_lineno(parameterdesc_start_lines.get(parameter_name, 0))
-
- print(f"{self.lineprefix}``{parameter}``")
-
- self.lineprefix = " "
- self.output_highlight(parameterdescs[parameter_name])
- self.lineprefix = " "
-
- print()
-
- print()
-
- self.lineprefix = oldprefix
- self.out_section(args)
-
-
-class ManFormat(OutputFormat):
- """Consts and functions used by man pages output"""
-
- highlights = (
- (type_constant, r"\1"),
- (type_constant2, r"\1"),
- (type_func, r"\\fB\1\\fP"),
- (type_enum, r"\\fI\1\\fP"),
- (type_struct, r"\\fI\1\\fP"),
- (type_typedef, r"\\fI\1\\fP"),
- (type_union, r"\\fI\1\\fP"),
- (type_param, r"\\fI\1\\fP"),
- (type_param_ref, r"\\fI\1\2\\fP"),
- (type_member, r"\\fI\1\2\3\\fP"),
- (type_fallback, r"\\fI\1\\fP")
- )
- blankline = ""
-
- def __init__(self):
- """
- Creates class variables.
-
- Not really mandatory, but it is a good coding style and makes
- pylint happy.
- """
-
- super().__init__()
-
- dt = datetime.now()
- if os.environ.get("KBUILD_BUILD_TIMESTAMP", None):
- # use UTC TZ
- to_zone = tz.gettz('UTC')
- dt = dt.astimezone(to_zone)
-
- self.man_date = dt.strftime("%B %Y")
-
- def output_highlight(self, block):
-
- contents = self.highlight_block(block)
-
- if isinstance(contents, list):
- contents = "\n".join(contents)
-
- for line in contents.strip("\n").split("\n"):
- line = Re(r"^\s*").sub("", line)
-
- if line and line[0] == ".":
- print("\\&" + line)
- else:
- print(line)
-
- def out_doc(self, fname, name, args):
- module = args.get('module')
- sectionlist = args.get('sectionlist', [])
- sections = args.get('sections', {})
-
- print(f'.TH "{module}" 9 "{module}" "{self.man_date}" "API Manual" LINUX')
-
- for section in sectionlist:
- print(f'.SH "{section}"')
- self.output_highlight(sections.get(section))
-
- def out_function(self, fname, name, args):
- """output function in man"""
-
- parameterlist = args.get('parameterlist', [])
- parameterdescs = args.get('parameterdescs', {})
- sectionlist = args.get('sectionlist', [])
- sections = args.get('sections', {})
-
- print(f'.TH "{args['function']}" 9 "{args['function']}" "{self.man_date}" "Kernel Hacker\'s Manual" LINUX')
-
- print(".SH NAME")
- print(f"{args['function']} \\- {args['purpose']}")
-
- print(".SH SYNOPSIS")
- if args.get('functiontype', ''):
- print(f'.B "{args['functiontype']}" {args['function']}')
- else:
- print(f'.B "{args['function']}')
-
- count = 0
- parenth = "("
- post = ","
-
- for parameter in parameterlist:
- if count == len(parameterlist) - 1:
- post = ");"
-
- dtype = args['parametertypes'].get(parameter, "")
- if function_pointer.match(dtype):
- # Pointer-to-function
- print(f'".BI "{parenth}{function_pointer.group(1)}" " ") ({function_pointer.group(2)}){post}"')
- else:
- dtype = Re(r'([^\*])$').sub(r'\1 ', dtype)
-
- print(f'.BI "{parenth}{dtype}" "{post}"')
- count += 1
- parenth = ""
-
- if parameterlist:
- print(".SH ARGUMENTS")
-
- for parameter in parameterlist:
- parameter_name = re.sub(r'\[.*', '', parameter)
-
- print(f'.IP "{parameter}" 12')
- self.output_highlight(parameterdescs.get(parameter_name, ""))
-
- for section in sectionlist:
- print(f'.SH "{section.upper()}"')
- self.output_highlight(sections[section])
-
- def out_enum(self, fname, name, args):
-
- name = args.get('enum', '')
- parameterlist = args.get('parameterlist', [])
- sectionlist = args.get('sectionlist', [])
- sections = args.get('sections', {})
-
- print(f'.TH "{args['module']}" 9 "enum {args['enum']}" "{self.man_date}" "API Manual" LINUX')
-
- print(".SH NAME")
- print(f"enum {args['enum']} \\- {args['purpose']}")
-
- print(".SH SYNOPSIS")
- print(f"enum {args['enum']}" + " {")
-
- count = 0
- for parameter in parameterlist:
- print(f'.br\n.BI " {parameter}"')
- if count == len(parameterlist) - 1:
- print("\n};")
- else:
- print(", \n.br")
-
- count += 1
-
- print(".SH Constants")
-
- for parameter in parameterlist:
- parameter_name = Re(r'\[.*').sub('', parameter)
- print(f'.IP "{parameter}" 12')
- self.output_highlight(args['parameterdescs'].get(parameter_name, ""))
-
- for section in sectionlist:
- print(f'.SH "{section}"')
- self.output_highlight(sections[section])
-
- def out_typedef(self, fname, name, args):
- module = args.get('module')
- typedef = args.get('typedef')
- purpose = args.get('purpose')
- sectionlist = args.get('sectionlist', [])
- sections = args.get('sections', {})
-
- print(f'.TH "{module}" 9 "{typedef}" "{self.man_date}" "API Manual" LINUX')
-
- print(".SH NAME")
- print(f"typedef {typedef} \\- {purpose}")
-
- for section in sectionlist:
- print(f'.SH "{section}"')
- self.output_highlight(sections.get(section))
-
- def out_struct(self, fname, name, args):
- module = args.get('module')
- struct_type = args.get('type')
- struct_name = args.get('struct')
- purpose = args.get('purpose')
- definition = args.get('definition')
- sectionlist = args.get('sectionlist', [])
- parameterlist = args.get('parameterlist', [])
- sections = args.get('sections', {})
- parameterdescs = args.get('parameterdescs', {})
-
- print(f'.TH "{module}" 9 "{struct_type} {struct_name}" "{self.man_date}" "API Manual" LINUX')
-
- print(".SH NAME")
- print(f"{struct_type} {struct_name} \\- {purpose}")
-
- # Replace tabs with two spaces and handle newlines
- declaration = definition.replace("\t", " ")
- declaration = Re(r"\n").sub('"\n.br\n.BI "', declaration)
-
- print(".SH SYNOPSIS")
- print(f"{struct_type} {struct_name} " + "{" +"\n.br")
- print(f'.BI "{declaration}\n' + "};\n.br\n")
-
- print(".SH Members")
- for parameter in parameterlist:
- if parameter.startswith("#"):
- continue
-
- parameter_name = re.sub(r"\[.*", "", parameter)
-
- if parameterdescs.get(parameter_name) == KernelDoc.undescribed:
- continue
-
- print(f'.IP "{parameter}" 12')
- self.output_highlight(parameterdescs.get(parameter_name))
-
- for section in sectionlist:
- print(f'.SH "{section}"')
- self.output_highlight(sections.get(section))
-
-
-# Command line interface
-
+from kdoc_files import KernelFiles # pylint: disable=C0413
+from kdoc_output import RestFormat, ManFormat # pylint: disable=C0413

DESC = """
Read C language source or header FILEs, extract embedded documentation comments,
diff --git a/scripts/lib/kdoc/kdoc_output.py b/scripts/lib/kdoc/kdoc_output.py
new file mode 100755
index 000000000000..24e40b3e7d1d
--- /dev/null
+++ b/scripts/lib/kdoc/kdoc_output.py
@@ -0,0 +1,736 @@
+#!/usr/bin/env python3
+# SPDX-License-Identifier: GPL-2.0
+# Copyright(c) 2025: Mauro Carvalho Chehab <mchehab@kernel.org>.
+#
+# pylint: disable=C0301,R0911,R0912,R0913,R0914,R0915,R0917
+
+# TODO: implement warning filtering
+
+"""
+Implement output filters to print kernel-doc documentation.
+
+The implementation uses a virtual base class (OutputFormat) which
+contains a dispatches to virtual methods, and some code to filter
+out output messages.
+
+The actual implementation is done on one separate class per each type
+of output. Currently, there are output classes for ReST and man/troff.
+"""
+
+import os
+import re
+from datetime import datetime
+
+from dateutil import tz
+
+from kdoc_parser import KernelDoc, type_param
+from kdoc_re import Re
+
+
+function_pointer = Re(r"([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)", cache=False)
+
+# match expressions used to find embedded type information
+type_constant = Re(r"\b``([^\`]+)``\b", cache=False)
+type_constant2 = Re(r"\%([-_*\w]+)", cache=False)
+type_func = Re(r"(\w+)\(\)", cache=False)
+type_param_ref = Re(r"([\!~\*]?)\@(\w*((\.\w+)|(->\w+))*(\.\.\.)?)", cache=False)
+
+# Special RST handling for func ptr params
+type_fp_param = Re(r"\@(\w+)\(\)", cache=False)
+
+# Special RST handling for structs with func ptr params
+type_fp_param2 = Re(r"\@(\w+->\S+)\(\)", cache=False)
+
+type_env = Re(r"(\$\w+)", cache=False)
+type_enum = Re(r"\&(enum\s*([_\w]+))", cache=False)
+type_struct = Re(r"\&(struct\s*([_\w]+))", cache=False)
+type_typedef = Re(r"\&(typedef\s*([_\w]+))", cache=False)
+type_union = Re(r"\&(union\s*([_\w]+))", cache=False)
+type_member = Re(r"\&([_\w]+)(\.|->)([_\w]+)", cache=False)
+type_fallback = Re(r"\&([_\w]+)", cache=False)
+type_member_func = type_member + Re(r"\(\)", cache=False)
+
+
+class OutputFormat:
+ # output mode.
+ OUTPUT_ALL = 0 # output all symbols and doc sections
+ OUTPUT_INCLUDE = 1 # output only specified symbols
+ OUTPUT_EXPORTED = 2 # output exported symbols
+ OUTPUT_INTERNAL = 3 # output non-exported symbols
+
+ # Virtual member to be overriden at the inherited classes
+ highlights = []
+
+ def __init__(self):
+ """Declare internal vars and set mode to OUTPUT_ALL"""
+
+ self.out_mode = self.OUTPUT_ALL
+ self.enable_lineno = None
+ self.nosymbol = {}
+ self.symbol = None
+ self.function_table = set()
+ self.config = None
+
+ def set_config(self, config):
+ self.config = config
+
+ def set_filter(self, export, internal, symbol, nosymbol, function_table,
+ enable_lineno):
+ """
+ Initialize filter variables according with the requested mode.
+
+ Only one choice is valid between export, internal and symbol.
+
+ The nosymbol filter can be used on all modes.
+ """
+
+ self.enable_lineno = enable_lineno
+
+ if symbol:
+ self.out_mode = self.OUTPUT_INCLUDE
+ function_table = symbol
+ elif export:
+ self.out_mode = self.OUTPUT_EXPORTED
+ elif internal:
+ self.out_mode = self.OUTPUT_INTERNAL
+ else:
+ self.out_mode = self.OUTPUT_ALL
+
+ if nosymbol:
+ self.nosymbol = set(nosymbol)
+
+ if function_table:
+ self.function_table = function_table
+
+ def highlight_block(self, block):
+ """
+ Apply the RST highlights to a sub-block of text.
+ """
+
+ for r, sub in self.highlights:
+ block = r.sub(sub, block)
+
+ return block
+
+ def check_doc(self, name):
+ """Check if DOC should be output"""
+
+ if self.out_mode == self.OUTPUT_ALL:
+ return True
+
+ if self.out_mode == self.OUTPUT_INCLUDE:
+ if name in self.nosymbol:
+ return False
+
+ if name in self.function_table:
+ return True
+
+ return False
+
+ def check_declaration(self, dtype, name):
+ if name in self.nosymbol:
+ return False
+
+ if self.out_mode == self.OUTPUT_ALL:
+ return True
+
+ if self.out_mode in [self.OUTPUT_INCLUDE, self.OUTPUT_EXPORTED]:
+ if name in self.function_table:
+ return True
+
+ if self.out_mode == self.OUTPUT_INTERNAL:
+ if dtype != "function":
+ return True
+
+ if name not in self.function_table:
+ return True
+
+ return False
+
+ def check_function(self, fname, name, args):
+ return True
+
+ def check_enum(self, fname, name, args):
+ return True
+
+ def check_typedef(self, fname, name, args):
+ return True
+
+ def msg(self, fname, name, args):
+
+ dtype = args.get('type', "")
+
+ if dtype == "doc":
+ self.out_doc(fname, name, args)
+ return False
+
+ if not self.check_declaration(dtype, name):
+ return False
+
+ if dtype == "function":
+ self.out_function(fname, name, args)
+ return False
+
+ if dtype == "enum":
+ self.out_enum(fname, name, args)
+ return False
+
+ if dtype == "typedef":
+ self.out_typedef(fname, name, args)
+ return False
+
+ if dtype in ["struct", "union"]:
+ self.out_struct(fname, name, args)
+ return False
+
+ # Warn if some type requires an output logic
+ self.config.log.warning("doesn't now how to output '%s' block",
+ dtype)
+
+ return True
+
+ # Virtual methods to be overridden by inherited classes
+ def out_doc(self, fname, name, args):
+ pass
+
+ def out_function(self, fname, name, args):
+ pass
+
+ def out_enum(self, fname, name, args):
+ pass
+
+ def out_typedef(self, fname, name, args):
+ pass
+
+ def out_struct(self, fname, name, args):
+ pass
+
+
+class RestFormat(OutputFormat):
+ # """Consts and functions used by ReST output"""
+
+ highlights = [
+ (type_constant, r"``\1``"),
+ (type_constant2, r"``\1``"),
+
+ # Note: need to escape () to avoid func matching later
+ (type_member_func, r":c:type:`\1\2\3\\(\\) <\1>`"),
+ (type_member, r":c:type:`\1\2\3 <\1>`"),
+ (type_fp_param, r"**\1\\(\\)**"),
+ (type_fp_param2, r"**\1\\(\\)**"),
+ (type_func, r"\1()"),
+ (type_enum, r":c:type:`\1 <\2>`"),
+ (type_struct, r":c:type:`\1 <\2>`"),
+ (type_typedef, r":c:type:`\1 <\2>`"),
+ (type_union, r":c:type:`\1 <\2>`"),
+
+ # in rst this can refer to any type
+ (type_fallback, r":c:type:`\1`"),
+ (type_param_ref, r"**\1\2**")
+ ]
+ blankline = "\n"
+
+ sphinx_literal = Re(r'^[^.].*::$', cache=False)
+ sphinx_cblock = Re(r'^\.\.\ +code-block::', cache=False)
+
+ def __init__(self):
+ """
+ Creates class variables.
+
+ Not really mandatory, but it is a good coding style and makes
+ pylint happy.
+ """
+
+ super().__init__()
+ self.lineprefix = ""
+
+ def print_lineno(self, ln):
+ """Outputs a line number"""
+
+ if self.enable_lineno and ln:
+ print(f".. LINENO {ln}")
+
+ def output_highlight(self, args):
+ input_text = args
+ output = ""
+ in_literal = False
+ litprefix = ""
+ block = ""
+
+ for line in input_text.strip("\n").split("\n"):
+
+ # If we're in a literal block, see if we should drop out of it.
+ # Otherwise, pass the line straight through unmunged.
+ if in_literal:
+ if line.strip(): # If the line is not blank
+ # If this is the first non-blank line in a literal block,
+ # figure out the proper indent.
+ if not litprefix:
+ r = Re(r'^(\s*)')
+ if r.match(line):
+ litprefix = '^' + r.group(1)
+ else:
+ litprefix = ""
+
+ output += line + "\n"
+ elif not Re(litprefix).match(line):
+ in_literal = False
+ else:
+ output += line + "\n"
+ else:
+ output += line + "\n"
+
+ # Not in a literal block (or just dropped out)
+ if not in_literal:
+ block += line + "\n"
+ if self.sphinx_literal.match(line) or self.sphinx_cblock.match(line):
+ in_literal = True
+ litprefix = ""
+ output += self.highlight_block(block)
+ block = ""
+
+ # Handle any remaining block
+ if block:
+ output += self.highlight_block(block)
+
+ # Print the output with the line prefix
+ for line in output.strip("\n").split("\n"):
+ print(self.lineprefix + line)
+
+ def out_section(self, args, out_reference=False):
+ """
+ Outputs a block section.
+
+ This could use some work; it's used to output the DOC: sections, and
+ starts by putting out the name of the doc section itself, but that
+ tends to duplicate a header already in the template file.
+ """
+
+ sectionlist = args.get('sectionlist', [])
+ sections = args.get('sections', {})
+ section_start_lines = args.get('section_start_lines', {})
+
+ for section in sectionlist:
+ # Skip sections that are in the nosymbol_table
+ if section in self.nosymbol:
+ continue
+
+ if not self.out_mode == self.OUTPUT_INCLUDE:
+ if out_reference:
+ print(f".. _{section}:\n")
+
+ if not self.symbol:
+ print(f'{self.lineprefix}**{section}**\n')
+
+ self.print_lineno(section_start_lines.get(section, 0))
+ self.output_highlight(sections[section])
+ print()
+ print()
+
+ def out_doc(self, fname, name, args):
+ if not self.check_doc(name):
+ return
+
+ self.out_section(args, out_reference=True)
+
+ def out_function(self, fname, name, args):
+
+ oldprefix = self.lineprefix
+ signature = ""
+
+ func_macro = args.get('func_macro', False)
+ if func_macro:
+ signature = args['function']
+ else:
+ if args.get('functiontype'):
+ signature = args['functiontype'] + " "
+ signature += args['function'] + " ("
+
+ parameterlist = args.get('parameterlist', [])
+ parameterdescs = args.get('parameterdescs', {})
+ parameterdesc_start_lines = args.get('parameterdesc_start_lines', {})
+
+ ln = args.get('ln', 0)
+
+ count = 0
+ for parameter in parameterlist:
+ if count != 0:
+ signature += ", "
+ count += 1
+ dtype = args['parametertypes'].get(parameter, "")
+
+ if function_pointer.search(dtype):
+ signature += function_pointer.group(1) + parameter + function_pointer.group(3)
+ else:
+ signature += dtype
+
+ if not func_macro:
+ signature += ")"
+
+ if args.get('typedef') or not args.get('functiontype'):
+ print(f".. c:macro:: {args['function']}\n")
+
+ if args.get('typedef'):
+ self.print_lineno(ln)
+ print(" **Typedef**: ", end="")
+ self.lineprefix = ""
+ self.output_highlight(args.get('purpose', ""))
+ print("\n\n**Syntax**\n")
+ print(f" ``{signature}``\n")
+ else:
+ print(f"``{signature}``\n")
+ else:
+ print(f".. c:function:: {signature}\n")
+
+ if not args.get('typedef'):
+ self.print_lineno(ln)
+ self.lineprefix = " "
+ self.output_highlight(args.get('purpose', ""))
+ print()
+
+ # Put descriptive text into a container (HTML ) to help set
+ # function prototypes apart
+ self.lineprefix = " "
+
+ if parameterlist:
+ print(".. container:: kernelindent\n")
+ print(f"{self.lineprefix}**Parameters**\n")
+
+ for parameter in parameterlist:
+ parameter_name = Re(r'\[.*').sub('', parameter)
+ dtype = args['parametertypes'].get(parameter, "")
+
+ if dtype:
+ print(f"{self.lineprefix}``{dtype}``")
+ else:
+ print(f"{self.lineprefix}``{parameter}``")
+
+ self.print_lineno(parameterdesc_start_lines.get(parameter_name, 0))
+
+ self.lineprefix = " "
+ if parameter_name in parameterdescs and \
+ parameterdescs[parameter_name] != KernelDoc.undescribed:
+
+ self.output_highlight(parameterdescs[parameter_name])
+ print()
+ else:
+ print(f"{self.lineprefix}*undescribed*\n")
+ self.lineprefix = " "
+
+ self.out_section(args)
+ self.lineprefix = oldprefix
+
+ def out_enum(self, fname, name, args):
+
+ oldprefix = self.lineprefix
+ name = args.get('enum', '')
+ parameterlist = args.get('parameterlist', [])
+ parameterdescs = args.get('parameterdescs', {})
+ ln = args.get('ln', 0)
+
+ print(f"\n\n.. c:enum:: {name}\n")
+
+ self.print_lineno(ln)
+ self.lineprefix = " "
+ self.output_highlight(args.get('purpose', ''))
+ print()
+
+ print(".. container:: kernelindent\n")
+ outer = self.lineprefix + " "
+ self.lineprefix = outer + " "
+ print(f"{outer}**Constants**\n")
+
+ for parameter in parameterlist:
+ print(f"{outer}``{parameter}``")
+
+ if parameterdescs.get(parameter, '') != KernelDoc.undescribed:
+ self.output_highlight(parameterdescs[parameter])
+ else:
+ print(f"{self.lineprefix}*undescribed*\n")
+ print()
+
+ self.lineprefix = oldprefix
+ self.out_section(args)
+
+ def out_typedef(self, fname, name, args):
+
+ oldprefix = self.lineprefix
+ name = args.get('typedef', '')
+ ln = args.get('ln', 0)
+
+ print(f"\n\n.. c:type:: {name}\n")
+
+ self.print_lineno(ln)
+ self.lineprefix = " "
+
+ self.output_highlight(args.get('purpose', ''))
+
+ print()
+
+ self.lineprefix = oldprefix
+ self.out_section(args)
+
+ def out_struct(self, fname, name, args):
+
+ name = args.get('struct', "")
+ purpose = args.get('purpose', "")
+ declaration = args.get('definition', "")
+ dtype = args.get('type', "struct")
+ ln = args.get('ln', 0)
+
+ parameterlist = args.get('parameterlist', [])
+ parameterdescs = args.get('parameterdescs', {})
+ parameterdesc_start_lines = args.get('parameterdesc_start_lines', {})
+
+ print(f"\n\n.. c:{dtype}:: {name}\n")
+
+ self.print_lineno(ln)
+
+ oldprefix = self.lineprefix
+ self.lineprefix += " "
+
+ self.output_highlight(purpose)
+ print()
+
+ print(".. container:: kernelindent\n")
+ print(f"{self.lineprefix}**Definition**::\n")
+
+ self.lineprefix = self.lineprefix + " "
+
+ declaration = declaration.replace("\t", self.lineprefix)
+
+ print(f"{self.lineprefix}{dtype} {name}" + ' {')
+ print(f"{declaration}{self.lineprefix}" + "};\n")
+
+ self.lineprefix = " "
+ print(f"{self.lineprefix}**Members**\n")
+ for parameter in parameterlist:
+ if not parameter or parameter.startswith("#"):
+ continue
+
+ parameter_name = parameter.split("[", maxsplit=1)[0]
+
+ if parameterdescs.get(parameter_name) == KernelDoc.undescribed:
+ continue
+
+ self.print_lineno(parameterdesc_start_lines.get(parameter_name, 0))
+
+ print(f"{self.lineprefix}``{parameter}``")
+
+ self.lineprefix = " "
+ self.output_highlight(parameterdescs[parameter_name])
+ self.lineprefix = " "
+
+ print()
+
+ print()
+
+ self.lineprefix = oldprefix
+ self.out_section(args)
+
+
+class ManFormat(OutputFormat):
+ """Consts and functions used by man pages output"""
+
+ highlights = (
+ (type_constant, r"\1"),
+ (type_constant2, r"\1"),
+ (type_func, r"\\fB\1\\fP"),
+ (type_enum, r"\\fI\1\\fP"),
+ (type_struct, r"\\fI\1\\fP"),
+ (type_typedef, r"\\fI\1\\fP"),
+ (type_union, r"\\fI\1\\fP"),
+ (type_param, r"\\fI\1\\fP"),
+ (type_param_ref, r"\\fI\1\2\\fP"),
+ (type_member, r"\\fI\1\2\3\\fP"),
+ (type_fallback, r"\\fI\1\\fP")
+ )
+ blankline = ""
+
+ def __init__(self):
+ """
+ Creates class variables.
+
+ Not really mandatory, but it is a good coding style and makes
+ pylint happy.
+ """
+
+ super().__init__()
+
+ dt = datetime.now()
+ if os.environ.get("KBUILD_BUILD_TIMESTAMP", None):
+ # use UTC TZ
+ to_zone = tz.gettz('UTC')
+ dt = dt.astimezone(to_zone)
+
+ self.man_date = dt.strftime("%B %Y")
+
+ def output_highlight(self, block):
+
+ contents = self.highlight_block(block)
+
+ if isinstance(contents, list):
+ contents = "\n".join(contents)
+
+ for line in contents.strip("\n").split("\n"):
+ line = Re(r"^\s*").sub("", line)
+
+ if line and line[0] == ".":
+ print("\\&" + line)
+ else:
+ print(line)
+
+ def out_doc(self, fname, name, args):
+ module = args.get('module')
+ sectionlist = args.get('sectionlist', [])
+ sections = args.get('sections', {})
+
+ print(f'.TH "{module}" 9 "{module}" "{self.man_date}" "API Manual" LINUX')
+
+ for section in sectionlist:
+ print(f'.SH "{section}"')
+ self.output_highlight(sections.get(section))
+
+ def out_function(self, fname, name, args):
+ """output function in man"""
+
+ parameterlist = args.get('parameterlist', [])
+ parameterdescs = args.get('parameterdescs', {})
+ sectionlist = args.get('sectionlist', [])
+ sections = args.get('sections', {})
+
+ print(f'.TH "{args['function']}" 9 "{args['function']}" "{self.man_date}" "Kernel Hacker\'s Manual" LINUX')
+
+ print(".SH NAME")
+ print(f"{args['function']} \\- {args['purpose']}")
+
+ print(".SH SYNOPSIS")
+ if args.get('functiontype', ''):
+ print(f'.B "{args['functiontype']}" {args['function']}')
+ else:
+ print(f'.B "{args['function']}')
+
+ count = 0
+ parenth = "("
+ post = ","
+
+ for parameter in parameterlist:
+ if count == len(parameterlist) - 1:
+ post = ");"
+
+ dtype = args['parametertypes'].get(parameter, "")
+ if function_pointer.match(dtype):
+ # Pointer-to-function
+ print(f'".BI "{parenth}{function_pointer.group(1)}" " ") ({function_pointer.group(2)}){post}"')
+ else:
+ dtype = Re(r'([^\*])$').sub(r'\1 ', dtype)
+
+ print(f'.BI "{parenth}{dtype}" "{post}"')
+ count += 1
+ parenth = ""
+
+ if parameterlist:
+ print(".SH ARGUMENTS")
+
+ for parameter in parameterlist:
+ parameter_name = re.sub(r'\[.*', '', parameter)
+
+ print(f'.IP "{parameter}" 12')
+ self.output_highlight(parameterdescs.get(parameter_name, ""))
+
+ for section in sectionlist:
+ print(f'.SH "{section.upper()}"')
+ self.output_highlight(sections[section])
+
+ def out_enum(self, fname, name, args):
+
+ name = args.get('enum', '')
+ parameterlist = args.get('parameterlist', [])
+ sectionlist = args.get('sectionlist', [])
+ sections = args.get('sections', {})
+
+ print(f'.TH "{args['module']}" 9 "enum {args['enum']}" "{self.man_date}" "API Manual" LINUX')
+
+ print(".SH NAME")
+ print(f"enum {args['enum']} \\- {args['purpose']}")
+
+ print(".SH SYNOPSIS")
+ print(f"enum {args['enum']}" + " {")
+
+ count = 0
+ for parameter in parameterlist:
+ print(f'.br\n.BI " {parameter}"')
+ if count == len(parameterlist) - 1:
+ print("\n};")
+ else:
+ print(", \n.br")
+
+ count += 1
+
+ print(".SH Constants")
+
+ for parameter in parameterlist:
+ parameter_name = Re(r'\[.*').sub('', parameter)
+ print(f'.IP "{parameter}" 12')
+ self.output_highlight(args['parameterdescs'].get(parameter_name, ""))
+
+ for section in sectionlist:
+ print(f'.SH "{section}"')
+ self.output_highlight(sections[section])
+
+ def out_typedef(self, fname, name, args):
+ module = args.get('module')
+ typedef = args.get('typedef')
+ purpose = args.get('purpose')
+ sectionlist = args.get('sectionlist', [])
+ sections = args.get('sections', {})
+
+ print(f'.TH "{module}" 9 "{typedef}" "{self.man_date}" "API Manual" LINUX')
+
+ print(".SH NAME")
+ print(f"typedef {typedef} \\- {purpose}")
+
+ for section in sectionlist:
+ print(f'.SH "{section}"')
+ self.output_highlight(sections.get(section))
+
+ def out_struct(self, fname, name, args):
+ module = args.get('module')
+ struct_type = args.get('type')
+ struct_name = args.get('struct')
+ purpose = args.get('purpose')
+ definition = args.get('definition')
+ sectionlist = args.get('sectionlist', [])
+ parameterlist = args.get('parameterlist', [])
+ sections = args.get('sections', {})
+ parameterdescs = args.get('parameterdescs', {})
+
+ print(f'.TH "{module}" 9 "{struct_type} {struct_name}" "{self.man_date}" "API Manual" LINUX')
+
+ print(".SH NAME")
+ print(f"{struct_type} {struct_name} \\- {purpose}")
+
+ # Replace tabs with two spaces and handle newlines
+ declaration = definition.replace("\t", " ")
+ declaration = Re(r"\n").sub('"\n.br\n.BI "', declaration)
+
+ print(".SH SYNOPSIS")
+ print(f"{struct_type} {struct_name} " + "{" + "\n.br")
+ print(f'.BI "{declaration}\n' + "};\n.br\n")
+
+ print(".SH Members")
+ for parameter in parameterlist:
+ if parameter.startswith("#"):
+ continue
+
+ parameter_name = re.sub(r"\[.*", "", parameter)
+
+ if parameterdescs.get(parameter_name) == KernelDoc.undescribed:
+ continue
+
+ print(f'.IP "{parameter}" 12')
+ self.output_highlight(parameterdescs.get(parameter_name))
+
+ for section in sectionlist:
+ print(f'.SH "{section}"')
+ self.output_highlight(sections.get(section))
--
2.49.0