summaryrefslogtreecommitdiffstats
path: root/scripts/bash_aliases
blob: e461707c8c2311ef1f586a38e0e6b02d344303ea (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
# SPDX-License-Identifier: GPL-2.0-only
########################################################################
#
# (C) Copyright 2020-2022, Alejandro Colomar
# These functions are free software; you can redistribute them and/or
# modify them under the terms of the GNU General Public License
# as published by the Free Software Foundation; version 2.
#
# These functions are distributed in the hope that they will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details
# (http://www.gnu.org/licenses/gpl-2.0.html).
#
########################################################################

########################################################################
#	Exit status

EX_USAGE=64;

########################################################################
#	C

#  sed_rm_ccomments()  removes C comments.
# It can't handle mixed //... and /*...*/ comments.
# Use as a filter (see man_lsfunc() in this file).

sed_rm_ccomments()
{
	perl -p -e 's%/\*.*?\*/%%g' \
	|sed -E '\%/\*%, \%\*/% {\%(\*/|/\*)%!d}' \
	|sed -E '\%/\*% {s%/\*.*%%; n; s%.*\*/%%;}' \
	|sed -E '\%/\*% {s%/\*.*%%; n; s%.*\*/%%;}' \
	|sed 's%//.*%%';
}

########################################################################
#	Linux man-pages

#  man_section()  prints specific manual page sections (DESCRIPTION, SYNOPSIS,
# ...) of all manual pages in a directory (or in a single manual page file).
# Usage example:  .../man-pages$ man_section man2 SYNOPSIS 'SEE ALSO';

man_section()
{
	if [ $# -lt 2 ]; then
		>&2 echo "Usage: ${FUNCNAME[0]} <dir> <section>...";
		return $EX_USAGE;
	fi

	local page="$1";
	shift;
	local sect="$*";

	find "$page" -type f \
	|xargs wc -l \
	|grep -v -e '\b1 ' -e '\btotal\b' \
	|awk '{ print $2 }' \
	|sort \
	|while read -r manpage; do
		(sed -n '/^\.TH/,/^\.SH/{/^\.SH/!p}' <"$manpage";
		 for s in $sect; do
			<"$manpage" \
			sed -n \
				-e "/^\.SH $s/p" \
				-e "/^\.SH $s/,/^\.SH/{/^\.SH/!p}";
		 done;) \
		|mandoc -Tutf8 2>/dev/null \
		|col -pbx;
	done;
}

#  man_lsfunc()  prints the name of all C functions declared in the SYNOPSIS
# of all manual pages in a directory (or in a single manual page file).
# Each name is printed in a separate line
# Usage example:  .../man-pages$ man_lsfunc man2;

man_lsfunc()
{
	if [ $# -lt 1 ]; then
		>&2 echo "Usage: ${FUNCNAME[0]} <manpage|manNdir>...";
		return $EX_USAGE;
	fi

	for arg in "$@"; do
		man_section "$arg" 'SYNOPSIS';
	done \
	|sed_rm_ccomments \
	|pcregrep -Mn '(?s)^ [\w ]+ \**\w+\([\w\s(,)[\]*]*?(...)?\s*\); *$' \
	|grep '^[0-9]' \
	|sed -E 's/syscall\(SYS_(\w*),?/\1(/' \
	|sed -E 's/^[^(]+ \**(\w+)\(.*/\1/' \
	|uniq;
}

#  man_lsvar()  prints the name of all C variables declared in the SYNOPSIS
# of all manual pages in a directory (or in a single manual page file).
# Each name is printed in a separate line
# Usage example:  .../man-pages$ man_lsvar man3;

man_lsvar()
{
	if [ $# -lt 1 ]; then
		>&2 echo "Usage: ${FUNCNAME[0]} <manpage|manNdir>...";
		return $EX_USAGE;
	fi

	for arg in "$@"; do
		man_section "$arg" 'SYNOPSIS';
	done \
	|sed_rm_ccomments \
	|pcregrep -Mv '(?s)^ [\w ]+ \**\w+\([\w\s(,)[\]*]+?(...)?\s*\); *$' \
	|pcregrep -Mn \
	  -e '(?s)^ +extern [\w ]+ \**\(\*+[\w ]+\)\([\w\s(,)[\]*]+?\s*\); *$' \
	  -e '^ +extern [\w ]+ \**[\w ]+; *$' \
	|grep '^[0-9]' \
	|grep -v 'typedef' \
	|sed -E 's/^[0-9]+: +extern [^(]+ \**\(\*+(\w* )?(\w+)\)\(.*/\2/' \
	|sed    's/^[0-9]\+: \+extern .* \**\(\w\+\); */\1/' \
	|uniq;
}

#  pdfman()  renders a manual page in PDF
# Usage example:  .../man-pages$ pdfman man2/membarrier.2;

pdfman()
{
	if [ $# -eq 0 ]; then
		>&2 echo "Usage: ${FUNCNAME[0]} [man(1) options] [section] page";
		return $EX_USAGE;
	fi;

	local tmp="$(mktemp -t "${!###*/}.XXXXXX")";

	man -Tps "$@" \
	|ps2pdf - - \
	>"$tmp";
	xdg-open "$tmp";
}

#  man_gitstaged  prints a list of all files with changes staged for commit
# (basename only if the files are within <man?/>), separated by ", ".
# Usage example:  .../man-pages$ git commit -m "$(man_gitstaged): msg";

man_gitstaged()
{
	git diff --staged --name-only					\
	|sed 's/$/, /'							\
	|sed 's%.*/%%'							\
	|tr -d '\n'							\
	|sed 's/, $//'
}