aboutsummaryrefslogtreecommitdiff
path: root/lib/main.bash
blob: 113f2e008215cc904ef42ab4497716ac72f3b9c2 (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
#!/usr/bin/env bash

source "$(dirname "$BASH_SOURCE")/util.bash"
source "$(dirname "$BASH_SOURCE")/logging.bash"

main() {
	[[ -z $1 ]] && usage && exit 2

	local action="$1"
	shift

	debug "Handling action '$action'"

	local action_path="$BASEDIR/lib/actions/$action.bash"

	debug "Checking $action_path"

	if [[ ! -f $action_path ]]
	then
		debug "No script found to handle action, showing usage"
		usage
		exit 2
	fi

	# Set some global defaults
	RSTAR_TOOLS=()
	RSTAR_BACKEND=moar
	RSTAR_PREFIX="$BASEDIR"

	# Source the file defining the action.
	debug "Sourcing $action_path"
	source "$action_path"

	# Ensure all required tools are available
	depcheck_bin || exit 3
	depcheck_perl || exit 3

	# TODO: Figure out which OS/distro we're on, to allow for working
	# around edge-cases. Probably expose this info as RSTAR_PLATFORM, in an
	# associative array.

	# Maintain our own tempdir
	export TMPDIR="$BASEDIR/tmp"
	mkdir -p -- "$TMPDIR"
	debug "\$TMPDIR set to $TMPDIR"

	# Actually perform the action
	debug "Running action"
	action "$@"
	local action_exit=$?

	# Clean up if necessary
	if [[ -z $RSTAR_MESSY ]]
	then
		debug "Cleaning up tempfiles at $TMPDIR"
		rm -rf -- "$TMPDIR"
	fi

	# Use the action's exit code
	exit $action_exit
}

usage() {
	cat <<EOF
Usage: rstar <action> [options] [arguments]

rstar is the entry point for all utilities to deal with Rakudo Star.

Actions:
	clean    Clean up the repository.
	dist     Create a distributable tarball of this repository.
	fetch    Fetch all required sources.
	install  Install Raku on this system.
	test     Run tests on Raku and the bundled ecosystem modules.
EOF
}

# This function checks for the availability of (binary) utilities in the user's
# $PATH environment variable.
depcheck_bin() {
	local missing=()

	for tool in "${RSTAR_DEPS_BIN[@]}"
	do
		debug "Checking for availability of $tool"
		command -v "$tool" > /dev/null && continue

		missing+=("$tool")
	done

	if [[ ${missing[*]} ]]
	then
		alert "Some required tools are missing:"

		for tool in "${missing[@]}"
		do
			# TODO: Include current distro's package name
			# containing the tool
			alert "  $tool"
		done

		return 1
	fi
}

# This function checks for the availability of all Perl modules required.
depcheck_perl() {
	local missing=()

	for module in "${RSTAR_DEPS_PERL[@]}"
	do
		debug "Checking for availability of $module"
		perl -M"$module" -e 0 2> /dev/null && continue

		missing+=("$module")
	done

	if [[ ${missing[*]} ]]
	then
		alert "Some required Perl modules are missing:"

		for module in "${missing[@]}"
		do
			alert "  $module"
		done

		return 1
	fi
}

main "$@"