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
|
# Copyright 2018 The Bazel Authors. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# Runfiles lookup library for Bazel-built Bash binaries and tests, version 2.
#
# VERSION HISTORY:
# - version 2: Shorter init code.
# Features:
# - "set -euo pipefail" only at end of init code.
# "set -e" breaks the source <path1> || source <path2> || ... scheme on
# macOS, because it terminates if path1 does not exist.
# - Not exporting any environment variables in init code.
# This is now done in runfiles.bash itself.
# Compatibility:
# - The v1 init code can load the v2 library, i.e. if you have older source
# code (still using v1 init) then you can build it with newer Bazel (which
# contains the v2 library).
# - The reverse is not true: the v2 init code CANNOT load the v1 library,
# i.e. if your project (or any of its external dependencies) use v2 init
# code, then you need a newer Bazel version (which contains the v2
# library).
# - version 1: Original Bash runfiles library.
#
# ENVIRONMENT:
# - If RUNFILES_LIB_DEBUG=1 is set, the script will print diagnostic messages to
# stderr.
#
# USAGE:
# 1. Depend on this runfiles library from your build rule:
#
# sh_binary(
# name = "my_binary",
# ...
# deps = ["@bazel_tools//tools/bash/runfiles"],
# )
#
# 2. Source the runfiles library.
#
# The runfiles library itself defines rlocation which you would need to look
# up the library's runtime location, thus we have a chicken-and-egg problem.
# Insert the following code snippet to the top of your main script:
#
# # --- begin runfiles.bash initialization v2 ---
# # Copy-pasted from the Bazel Bash runfiles library v2.
# set -uo pipefail; f=bazel_tools/tools/bash/runfiles/runfiles.bash
# source "${RUNFILES_DIR:-/dev/null}/$f" 2>/dev/null || \
# source "$(grep -sm1 "^$f " "${RUNFILES_MANIFEST_FILE:-/dev/null}" | cut -f2- -d' ')" 2>/dev/null || \
# source "$0.runfiles/$f" 2>/dev/null || \
# source "$(grep -sm1 "^$f " "$0.runfiles_manifest" | cut -f2- -d' ')" 2>/dev/null || \
# source "$(grep -sm1 "^$f " "$0.exe.runfiles_manifest" | cut -f2- -d' ')" 2>/dev/null || \
# { echo>&2 "ERROR: cannot find $f"; exit 1; }; f=; set -e
# # --- end runfiles.bash initialization v2 ---
#
#
# 3. Use rlocation to look up runfile paths.
#
# cat "$(rlocation my_workspace/path/to/my/data.txt)"
#
if [[ ! -d "${RUNFILES_DIR:-/dev/null}" && ! -f "${RUNFILES_MANIFEST_FILE:-/dev/null}" ]]; then
if [[ -f "$0.runfiles_manifest" ]]; then
export RUNFILES_MANIFEST_FILE="$0.runfiles_manifest"
elif [[ -f "$0.runfiles/MANIFEST" ]]; then
export RUNFILES_MANIFEST_FILE="$0.runfiles/MANIFEST"
elif [[ -f "$0.runfiles/bazel_tools/tools/bash/runfiles/runfiles.bash" ]]; then
export RUNFILES_DIR="$0.runfiles"
fi
fi
case "$(uname -s | tr [:upper:] [:lower:])" in
msys*|mingw*|cygwin*)
# matches an absolute Windows path
export _RLOCATION_ISABS_PATTERN="^[a-zA-Z]:[/\\]"
;;
*)
# matches an absolute Unix path
export _RLOCATION_ISABS_PATTERN="^/[^/].*"
;;
esac
# Prints to stdout the runtime location of a data-dependency.
function rlocation() {
if [[ "${RUNFILES_LIB_DEBUG:-}" == 1 ]]; then
echo >&2 "INFO[runfiles.bash]: rlocation($1): start"
fi
if [[ "$1" =~ $_RLOCATION_ISABS_PATTERN ]]; then
if [[ "${RUNFILES_LIB_DEBUG:-}" == 1 ]]; then
echo >&2 "INFO[runfiles.bash]: rlocation($1): absolute path, return"
fi
# If the path is absolute, print it as-is.
echo "$1"
elif [[ "$1" == ../* || "$1" == */.. || "$1" == ./* || "$1" == */./* || "$1" == "*/." || "$1" == *//* ]]; then
if [[ "${RUNFILES_LIB_DEBUG:-}" == 1 ]]; then
echo >&2 "ERROR[runfiles.bash]: rlocation($1): path is not normalized"
fi
return 1
elif [[ "$1" == \\* ]]; then
if [[ "${RUNFILES_LIB_DEBUG:-}" == 1 ]]; then
echo >&2 "ERROR[runfiles.bash]: rlocation($1): absolute path without" \
"drive name"
fi
return 1
else
if [[ -e "${RUNFILES_DIR:-/dev/null}/$1" ]]; then
if [[ "${RUNFILES_LIB_DEBUG:-}" == 1 ]]; then
echo >&2 "INFO[runfiles.bash]: rlocation($1): found under RUNFILES_DIR ($RUNFILES_DIR), return"
fi
echo "${RUNFILES_DIR}/$1"
elif [[ -f "${RUNFILES_MANIFEST_FILE:-/dev/null}" ]]; then
if [[ "${RUNFILES_LIB_DEBUG:-}" == 1 ]]; then
echo >&2 "INFO[runfiles.bash]: rlocation($1): looking in RUNFILES_MANIFEST_FILE ($RUNFILES_MANIFEST_FILE)"
fi
local -r result=$(grep -m1 "^$1 " "${RUNFILES_MANIFEST_FILE}" | cut -d ' ' -f 2-)
if [[ -e "${result:-/dev/null}" ]]; then
if [[ "${RUNFILES_LIB_DEBUG:-}" == 1 ]]; then
echo >&2 "INFO[runfiles.bash]: rlocation($1): found in manifest as ($result)"
fi
echo "$result"
else
if [[ "${RUNFILES_LIB_DEBUG:-}" == 1 ]]; then
echo >&2 "INFO[runfiles.bash]: rlocation($1): not found in manifest"
fi
echo ""
fi
else
if [[ "${RUNFILES_LIB_DEBUG:-}" == 1 ]]; then
echo >&2 "ERROR[runfiles.bash]: cannot look up runfile \"$1\" " \
"(RUNFILES_DIR=\"${RUNFILES_DIR:-}\"," \
"RUNFILES_MANIFEST_FILE=\"${RUNFILES_MANIFEST_FILE:-}\")"
fi
return 1
fi
fi
}
export -f rlocation
# Exports the environment variables that subprocesses need in order to use
# runfiles.
# If a subprocess is a Bazel-built binary rule that also uses the runfiles
# libraries under @bazel_tools//tools/<lang>/runfiles, then that binary needs
# these envvars in order to initialize its own runfiles library.
function runfiles_export_envvars() {
if [[ ! -f "${RUNFILES_MANIFEST_FILE:-/dev/null}" \
&& ! -d "${RUNFILES_DIR:-/dev/null}" ]]; then
return 1
fi
if [[ ! -f "${RUNFILES_MANIFEST_FILE:-/dev/null}" ]]; then
if [[ -f "$RUNFILES_DIR/MANIFEST" ]]; then
export RUNFILES_MANIFEST_FILE="$RUNFILES_DIR/MANIFEST"
elif [[ -f "${RUNFILES_DIR}_manifest" ]]; then
export RUNFILES_MANIFEST_FILE="${RUNFILES_DIR}_manifest"
else
export RUNFILES_MANIFEST_FILE=
fi
elif [[ ! -d "${RUNFILES_DIR:-/dev/null}" ]]; then
if [[ "$RUNFILES_MANIFEST_FILE" == */MANIFEST \
&& -d "${RUNFILES_MANIFEST_FILE%/MANIFEST}" ]]; then
export RUNFILES_DIR="${RUNFILES_MANIFEST_FILE%/MANIFEST}"
export JAVA_RUNFILES="$RUNFILES_DIR"
elif [[ "$RUNFILES_MANIFEST_FILE" == *_manifest \
&& -d "${RUNFILES_MANIFEST_FILE%_manifest}" ]]; then
export RUNFILES_DIR="${RUNFILES_MANIFEST_FILE%_manifest}"
export JAVA_RUNFILES="$RUNFILES_DIR"
else
export RUNFILES_DIR=
fi
fi
}
export -f runfiles_export_envvars
|
