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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /scripts/kernel-doc
Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
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1#!/usr/bin/perl -w
2
3use strict;
4
5## Copyright (c) 1998 Michael Zucchi, All Rights Reserved ##
6## Copyright (C) 2000, 1 Tim Waugh <twaugh@redhat.com> ##
7## Copyright (C) 2001 Simon Huggins ##
8## ##
9## #define enhancements by Armin Kuster <akuster@mvista.com> ##
10## Copyright (c) 2000 MontaVista Software, Inc. ##
11## ##
12## This software falls under the GNU General Public License. ##
13## Please read the COPYING file for more information ##
14
15# w.o. 03-11-2000: added the '-filelist' option.
16
17# 18/01/2001 - Cleanups
18# Functions prototyped as foo(void) same as foo()
19# Stop eval'ing where we don't need to.
20# -- huggie@earth.li
21
22# 27/06/2001 - Allowed whitespace after initial "/**" and
23# allowed comments before function declarations.
24# -- Christian Kreibich <ck@whoop.org>
25
26# Still to do:
27# - add perldoc documentation
28# - Look more closely at some of the scarier bits :)
29
30# 26/05/2001 - Support for separate source and object trees.
31# Return error code.
32# Keith Owens <kaos@ocs.com.au>
33
34# 23/09/2001 - Added support for typedefs, structs, enums and unions
35# Support for Context section; can be terminated using empty line
36# Small fixes (like spaces vs. \s in regex)
37# -- Tim Jansen <tim@tjansen.de>
38
39
40#
41# This will read a 'c' file and scan for embedded comments in the
42# style of gnome comments (+minor extensions - see below).
43#
44
45# Note: This only supports 'c'.
46
47# usage:
48# kerneldoc [ -docbook | -html | -text | -man ]
49# [ -function funcname [ -function funcname ...] ] c file(s)s > outputfile
50# or
51# [ -nofunction funcname [ -function funcname ...] ] c file(s)s > outputfile
52#
53# Set output format using one of -docbook -html -text or -man. Default is man.
54#
55# -function funcname
56# If set, then only generate documentation for the given function(s). All
57# other functions are ignored.
58#
59# -nofunction funcname
60# If set, then only generate documentation for the other function(s). All
61# other functions are ignored. Cannot be used with -function together
62# (yes thats a bug - perl hackers can fix it 8))
63#
64# c files - list of 'c' files to process
65#
66# All output goes to stdout, with errors to stderr.
67
68#
69# format of comments.
70# In the following table, (...)? signifies optional structure.
71# (...)* signifies 0 or more structure elements
72# /**
73# * function_name(:)? (- short description)?
74# (* @parameterx: (description of parameter x)?)*
75# (* a blank line)?
76# * (Description:)? (Description of function)?
77# * (section header: (section description)? )*
78# (*)?*/
79#
80# So .. the trivial example would be:
81#
82# /**
83# * my_function
84# **/
85#
86# If the Description: header tag is ommitted, then there must be a blank line
87# after the last parameter specification.
88# e.g.
89# /**
90# * my_function - does my stuff
91# * @my_arg: its mine damnit
92# *
93# * Does my stuff explained.
94# */
95#
96# or, could also use:
97# /**
98# * my_function - does my stuff
99# * @my_arg: its mine damnit
100# * Description: Does my stuff explained.
101# */
102# etc.
103#
104# Beside functions you can also write documentation for structs, unions,
105# enums and typedefs. Instead of the function name you must write the name
106# of the declaration; the struct/union/enum/typedef must always precede
107# the name. Nesting of declarations is not supported.
108# Use the argument mechanism to document members or constants.
109# e.g.
110# /**
111# * struct my_struct - short description
112# * @a: first member
113# * @b: second member
114# *
115# * Longer description
116# */
117# struct my_struct {
118# int a;
119# int b;
120# };
121#
122# All descriptions can be multiline, except the short function description.
123#
124# You can also add additional sections. When documenting kernel functions you
125# should document the "Context:" of the function, e.g. whether the functions
126# can be called form interrupts. Unlike other sections you can end it with an
127# empty line.
128# Example-sections should contain the string EXAMPLE so that they are marked
129# appropriately in DocBook.
130#
131# Example:
132# /**
133# * user_function - function that can only be called in user context
134# * @a: some argument
135# * Context: !in_interrupt()
136# *
137# * Some description
138# * Example:
139# * user_function(22);
140# */
141# ...
142#
143#
144# All descriptive text is further processed, scanning for the following special
145# patterns, which are highlighted appropriately.
146#
147# 'funcname()' - function
148# '$ENVVAR' - environmental variable
149# '&struct_name' - name of a structure (up to two words including 'struct')
150# '@parameter' - name of a parameter
151# '%CONST' - name of a constant.
152
153my $errors = 0;
154my $warnings = 0;
155
156# match expressions used to find embedded type information
157my $type_constant = '\%([-_\w]+)';
158my $type_func = '(\w+)\(\)';
159my $type_param = '\@(\w+)';
160my $type_struct = '\&((struct\s*)?[_\w]+)';
161my $type_env = '(\$\w+)';
162
163# Output conversion substitutions.
164# One for each output format
165
166# these work fairly well
167my %highlights_html = ( $type_constant, "<i>\$1</i>",
168 $type_func, "<b>\$1</b>",
169 $type_struct, "<i>\$1</i>",
170 $type_param, "<tt><b>\$1</b></tt>" );
171my $blankline_html = "<p>";
172
173# XML, docbook format
174my %highlights_xml = ( "([^=])\\\"([^\\\"<]+)\\\"", "\$1<quote>\$2</quote>",
175 $type_constant, "<constant>\$1</constant>",
176 $type_func, "<function>\$1</function>",
177 $type_struct, "<structname>\$1</structname>",
178 $type_env, "<envar>\$1</envar>",
179 $type_param, "<parameter>\$1</parameter>" );
180my $blankline_xml = "</para><para>\n";
181
182# gnome, docbook format
183my %highlights_gnome = ( $type_constant, "<replaceable class=\"option\">\$1</replaceable>",
184 $type_func, "<function>\$1</function>",
185 $type_struct, "<structname>\$1</structname>",
186 $type_env, "<envar>\$1</envar>",
187 $type_param, "<parameter>\$1</parameter>" );
188my $blankline_gnome = "</para><para>\n";
189
190# these are pretty rough
191my %highlights_man = ( $type_constant, "\$1",
192 $type_func, "\\\\fB\$1\\\\fP",
193 $type_struct, "\\\\fI\$1\\\\fP",
194 $type_param, "\\\\fI\$1\\\\fP" );
195my $blankline_man = "";
196
197# text-mode
198my %highlights_text = ( $type_constant, "\$1",
199 $type_func, "\$1",
200 $type_struct, "\$1",
201 $type_param, "\$1" );
202my $blankline_text = "";
203
204
205sub usage {
206 print "Usage: $0 [ -v ] [ -docbook | -html | -text | -man ]\n";
207 print " [ -function funcname [ -function funcname ...] ]\n";
208 print " [ -nofunction funcname [ -nofunction funcname ...] ]\n";
209 print " c source file(s) > outputfile\n";
210 exit 1;
211}
212
213# read arguments
214if ($#ARGV==-1) {
215 usage();
216}
217
218my $verbose = 0;
219my $output_mode = "man";
220my %highlights = %hi