flutter 4.21 KB
Newer Older
1 2 3 4 5
#!/bin/bash
# Copyright 2015 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

6 7 8 9

# ---------------------------------- NOTE ---------------------------------- #
#
# Please keep the logic in this file consistent with the logic in the
10
# `flutter.bat` script in the same directory to ensure that Flutter continues
11 12 13 14
# to work across all platforms!
#
# -------------------------------------------------------------------------- #

15 16
set -e

17
function follow_links() {
18
  cd -P "${1%/*}"
19
  local file="$PWD/${1##*/}"
20 21
  while [ -h "$file" ]; do
    # On Mac OS, readlink -f doesn't work.
22
    cd -P "${file%/*}"
23
    file="$(readlink "$file")"
24 25
    cd -P "${file%/*}"
    file="$PWD/${file##*/}"
26
  done
27
  echo "$PWD/${file##*/}"
28 29
}

30 31 32
# Convert a filesystem path to a format usable by Dart's URI parser.
function path_uri() {
  # Reduce multiple leading slashes to a single slash.
33
  echo "$1" | sed -E -e "s,^/+,/,"
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
function upgrade_flutter () {
  if hash flock 2>/dev/null; then
    flock 3 # ensures that we don't simultaneously update Dart in multiple parallel instances
    # some platforms (e.g. Mac) don't have flock or any reliable alternative
  fi

  local revision=`(cd "$FLUTTER_ROOT"; git rev-parse HEAD)`
  if [ ! -f "$SNAPSHOT_PATH" ] || [ ! -s "$STAMP_PATH" ] || [ `cat "$STAMP_PATH"` != "$revision" ] || [ "$FLUTTER_TOOLS_DIR/pubspec.yaml" -nt "$FLUTTER_TOOLS_DIR/pubspec.lock" ]; then
    mkdir -p "$FLUTTER_ROOT/bin/cache"
    touch "$FLUTTER_ROOT/bin/cache/.dartignore"
    "$FLUTTER_ROOT/bin/internal/update_dart_sdk.sh"

    echo Building flutter tool...
    if [ "$TRAVIS" == "true" ] || [ "$BOT" == "true" ] || [ "$CONTINUOUS_INTEGRATION" == "true" ] || [ "$CHROME_HEADLESS" == "1" ] || [ "$APPVEYOR" == "true" ] || [ "$CI" == "true" ]; then
      PUB_ENVIRONMENT="$PUB_ENVIRONMENT:flutter_bot"
    fi
    export PUB_ENVIRONMENT="$PUB_ENVIRONMENT:flutter_install"

    if [ -d "$FLUTTER_ROOT/.pub-cache" ]; then
      export PUB_CACHE="${PUB_CACHE:-"$FLUTTER_ROOT/.pub-cache"}"
    fi

    while : ; do
      cd "$FLUTTER_TOOLS_DIR"
      "$PUB" upgrade --verbosity=error --no-packages-dir && break
      echo Error: Unable to 'pub upgrade' flutter tool. Retrying in five seconds...
      sleep 5
    done
    "$DART" --snapshot="$SNAPSHOT_PATH" --packages="$FLUTTER_TOOLS_DIR/.packages" "$SCRIPT_PATH"
    echo "$revision" > "$STAMP_PATH"
  fi
}

69
PROG_NAME="$(path_uri "$(follow_links "$BASH_SOURCE")")"
70 71 72
BIN_DIR="$(cd "${PROG_NAME%/*}" ; pwd -P)"
export FLUTTER_ROOT="$(cd "${BIN_DIR}/.." ; pwd -P)"

73 74 75
FLUTTER_TOOLS_DIR="$FLUTTER_ROOT/packages/flutter_tools"
SNAPSHOT_PATH="$FLUTTER_ROOT/bin/cache/flutter_tools.snapshot"
STAMP_PATH="$FLUTTER_ROOT/bin/cache/flutter_tools.stamp"
76
SCRIPT_PATH="$FLUTTER_TOOLS_DIR/bin/flutter_tools.dart"
77
DART_SDK_PATH="$FLUTTER_ROOT/bin/cache/dart-sdk"
78

79
DART="$DART_SDK_PATH/bin/dart"
80 81
PUB="$DART_SDK_PATH/bin/pub"

82 83
# Test if running as superuser – but don't warn if running within Docker
if [[ "$EUID" == "0" ]] && ! [[ -f /.dockerenv ]]; then
84 85 86 87 88 89
  echo "   Woah! You appear to be trying to run flutter as root."
  echo "   We strongly recommend running the flutter tool without superuser privileges."
  echo "  /"
  echo "📎"
fi

90 91 92 93 94 95 96 97 98 99
# Test if Git is available on the Host
if ! hash git 2>/dev/null; then
  echo "Error: Unable to find git in your PATH."
  exit 1
fi
# Test if the flutter directory is a git clone (otherwise git rev-parse HEAD would fail)
if [ ! -d "$FLUTTER_ROOT/.git" ]; then
  echo "Error: The Flutter directory is not a clone of the GitHub project."
  exit 1
fi
100

101
FLUTTER_TOOL_ARGS="--assert-initializer $FLUTTER_TOOL_ARGS"
102 103
# To debug the tool, you can uncomment the following lines to enable checked mode and set an observatory port:
# FLUTTER_TOOL_ARGS="--checked $FLUTTER_TOOL_ARGS"
104
# FLUTTER_TOOL_ARGS="$FLUTTER_TOOL_ARGS --observe=65432"
105

106
(upgrade_flutter) 3< "$PROG_NAME"
107

108
set +e
109
"$DART" $FLUTTER_TOOL_ARGS "$SNAPSHOT_PATH" "$@"
110 111 112 113 114 115

# The VM exits with code 253 if the snapshot version is out-of-date.
# If it is, we need to snapshot it again.
EXIT_CODE=$?
if [ $EXIT_CODE != 253 ]; then
  exit $EXIT_CODE
Ian Hickson's avatar
Ian Hickson committed
116
fi
117 118

set -e
119
"$DART" --snapshot="$SNAPSHOT_PATH" --packages="$FLUTTER_TOOLS_DIR/.packages" "$SCRIPT_PATH"
120
"$DART" $FLUTTER_TOOL_ARGS "$SNAPSHOT_PATH" "$@"