summaryrefslogtreecommitdiff
path: root/sh/functions.sh
blob: 4c8843e819193339f5a4620e2e922306be39991c (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
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
# Copyright 1999-2007 Gentoo Foundation
# Copyright 2007 Roy Marples
# All rights reserved

# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in the
#    documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.

RC_GOT_FUNCTIONS="yes"

eindent() {
	EINFO_INDENT=$((${EINFO_INDENT:-0} + 2))
	[ "${EINFO_INDENT}" -gt 40 ] && EINFO_INDENT=40
	export EINFO_INDENT
}

eoutdent() {
	EINFO_INDENT=$((${EINFO_INDENT:-0} - 2))
	[ "${EINFO_INDENT}" -lt 0 ] && EINFO_INDENT=0
	return 0
}

# Safer way to list the contents of a directory,
# as it do not have the "empty dir bug".
#
# char *dolisting(param)
#
#    print a list of the directory contents
#
#    NOTE: quote the params if they contain globs.
#          also, error checking is not that extensive ...
#
dolisting() {
	local x= y= mylist= mypath="$*"

	# Here we use file globbing instead of ls to save on forking
	for x in ${mypath}; do
		[ ! -e "${x}" ] && continue

		if [ -L "${x}" -o -f "${x}" ]; then
			mylist="${mylist} "${x}
		elif [ -d "${x}" ]; then
			[ "${x%/}" != "${x}" ] && x=${x%/}
			
			for y in "${x}"/*; do
				[ -e "${y}" ] && mylist="${mylist} ${y}"
			done
		fi
	done

	echo "${mylist# *}"
}

# bool is_older_than(reference, files/dirs to check)
#
#   return 0 if any of the files/dirs are newer than
#   the reference file
#
#   EXAMPLE: if is_older_than a.out *.o; then ...
is_older_than() {
	local x= ref="$1"
	shift

	for x; do
		[ -e "${x}" ] || continue
		# We need to check the mtime if it's a directory too as the
		# contents may have changed.
		[ "${x}" -nt "${ref}" ] && return 0
		[ -d "${x}" ] && is_older_than "${ref}" "${x}"/* && return 0
	done

	return 1 
}

uniqify() {
    local result=
    while [ -n "$1" ]; do
		case " ${result} " in
			*" $1 "*);;
			*) result="${result} $1";;
		esac
		shift
	done
    echo "${result# *}"
}

yesno()
{
	[ -z "$1" ] && return 1

	case "$1" in
		[Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]|[Oo][Nn]|1) return 0;;
		[Nn][Oo]|[Ff][Aa][Ll][Ss][Ee]|[Oo][Ff][Ff]|0) return 1;;
	esac

	local value=
	eval value=\$${1}
	case "${value}" in
		[Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]|[Oo][Nn]|1) return 0;;
		[Nn][Oo]|[Ff][Aa][Ll][Ss][Ee]|[Oo][Ff][Ff]|0) return 1;;
		*) vewarn "\$${1} is not set properly"; return 1;;
	esac
}

KV_to_int() {
	[ -z $1 ] && return 1

	local x=${1%%-*}
	local KV_MAJOR=${x%%.*}
	x=${x#*.}
	local KV_MINOR=${x%%.*}
	x=${x#*.}
	local KV_MICRO=${x%%.*}
	local KV_int=$((${KV_MAJOR} * 65536 + ${KV_MINOR} * 256 + ${KV_MICRO} ))

	# We make version 2.2.0 the minimum version we will handle as
	# a sanity check ... if its less, we fail ...
	[ "${KV_int}" -lt 131584 ] && return 1
	
	echo "${KV_int}"
}

_sanitize_path() {
	local IFS=":" p= path=
	for p in ${PATH}; do
		case "${p}" in
			/lib/rc/sbin|/bin|/sbin|/usr/bin|/usr/sbin|/usr/local/bin|/usr/local/sbin);;
			*) path="${path}:${p}";;
		esac
	done

	echo "${path}"
}

# Allow our scripts to support zsh
if [ -n "${ZSH_VERSION}" ]; then
  emulate sh
  NULLCMD=:
  # Zsh 3.x and 4.x performs word splitting on ${1+"$@"}, which
  # is contrary to our usage.  Disable this feature.
  alias -g '${1+"$@"}'='"$@"'
  setopt NO_GLOB_SUBST
fi

# Add our bin to $PATH
export PATH="/lib/rc/bin:/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin$(_sanitize_path "${PATH}")"
unset _sanitize_path

for arg; do
	case "${arg}" in
		--nocolor|--nocolour|-C)
			export EINFO_COLOR="NO"
			;;
	esac
done

if [ -t 1 ] && yesno "${EINFO_COLOR:-YES}"; then
	if [ -z "${GOOD}" ]; then
		eval $(eval_ecolors)
	fi
else
	# We need to have shell stub functions so our init scripts can remember
	# the last ecmd
	for _e in ebegin eend error errorn einfo einfon ewarn ewarnn ewend \
		vebegin veend veinfo vewarn vewend; do
		eval "${_e}() { local _r; /lib/rc/bin/${_e} \"\$@\"; _r=$?; \
		export EINFO_LASTCMD=${_e}; return \$_r; }"
	done
fi

# vim: set ts=4 :