Migrate from Travis CI to GitHub Actions

This removes all CI builds from travis-ci, due to their recent changes
in policy and harsh limitations on builds. With build times over 2
hours, it was a significant hindrance to development.

Instead of Travis CI, the CI is now split on Sourcehut and GitHub. Since
Sourcehut only supports Linux/BSD, all builds on those operating systems
are executed there. The GitHub Actions CI is used to build for
Windows/macOS, which are not available on Sourcehut.

Since asset deployment for releases requires builds on all platforms,
this is also done on GitHub actions. Though the new `upload_asset.sh`
script makes sure that migration in the future is fairly simple and we
do not tie ourselves to the overly complicated GitHub Actions ecosystem.

3 files changed, 212 insertions, 0 deletions

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 00000000..7086f1cd
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,38 @@
+name: CI
+
+on: [push, pull_request]
+
+env:
+  CARGO_TERM_COLOR: always
+
+jobs:
+  build:
+    strategy:
+      matrix:
+        rust_version: [stable, 1.43.1]
+        os: [windows-latest, macos-latest]
+
+    runs-on: ${{ matrix.os }}
+
+    steps:
+      - uses: actions/checkout@v2
+      - name: Rustup
+        run: rustup default ${{ matrix.rust_version }}
+      - name: Test
+        run: cargo test
+
+  clippy:
+    strategy:
+      matrix:
+        os: [windows-latest, macos-latest]
+
+    runs-on: ${{ matrix.os }}
+
+    steps:
+      - uses: actions/checkout@v2
+      - name: Rustup
+        run: rustup default ${{ matrix.rust_version }}
+      - name: Install Clippy
+        run: rustup component add clippy
+      - name: Lint
+        run: cargo clippy --all-targets --manifest-path ./alacritty/Cargo.toml --no-default-features --features "x11 wayland"
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
new file mode 100644
index 00000000..d1a9848c
--- /dev/null
+++ b/.github/workflows/release.yml
@@ -0,0 +1,81 @@
+name: Release
+
+on:
+  push:
+    tags: ["v[0-9]+.[0-9]+.[0-9]+"]
+
+env:
+  GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+  CARGO_TERM_COLOR: always
+
+jobs:
+  macos:
+    runs-on: macos-latest
+
+    steps:
+      - uses: actions/checkout@v2
+      - name: Test
+        run: cargo test --release
+      - name: Make App
+        run: make dmg
+      - name: Upload Application
+        run: |
+          mv ./target/release/osx/Alacritty.dmg ./Alacritty-${GITHUB_REF##*/}.dmg
+          ./.github/workflows/upload_asset.sh ./Alacritty-${GITHUB_REF##*/}.dmg $GITHUB_TOKEN
+
+  windows:
+    runs-on: windows-latest
+
+    defaults:
+      run:
+        shell: bash
+
+    steps:
+      - uses: actions/checkout@v2
+      - name: Test
+        run: cargo test --release
+      - name: Build
+        run: cargo build --release
+      - name: Upload portable executable
+        run: |
+          cp ./target/release/alacritty.exe ./Alacritty-${GITHUB_REF##*/}-portable.exe
+          ./.github/workflows/upload_asset.sh \
+            ./Alacritty-${GITHUB_REF##*/}-portable.exe $GITHUB_TOKEN
+      - name: Install WiX
+        run: nuget install WiX
+      - name: Crate msi installer
+        run: |
+          ./WiX.*/tools/candle.exe -nologo -arch "x64" -ext WixUIExtension -ext WixUtilExtension \
+            -out "./alacritty.wixobj" "extra/windows/wix/alacritty.wxs"
+          ./WiX.*/tools/light.exe -nologo -ext WixUIExtension -ext WixUtilExtension \
+            -out "./Alacritty-${GITHUB_REF##*/}-installer.msi" -sice:ICE61 -sice:ICE91 \
+            "./alacritty.wixobj"
+      - name: Upload msi installer
+        run: |
+          ./.github/workflows/upload_asset.sh \
+            ./Alacritty-${GITHUB_REF##*/}-installer.msi $GITHUB_TOKEN
+
+  linux:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v2
+      - name: Install dependencies
+        run: |
+          sudo apt-get install cmake pkg-config libfreetype6-dev libfontconfig1-dev \
+            libxcb-xfixes0-dev python3
+      - name: Test
+        run: cargo test --release
+      - name: Gzip manpage
+        run: gzip -c "./extra/alacritty.man" > "./alacritty.1.gz"
+      - name: Upload Assets
+        run: |
+          mv ./extra/logo/alacritty-term.svg ./Alacritty.svg
+          ./.github/workflows/upload_asset.sh ./Alacritty.svg $GITHUB_TOKEN
+          ./.github/workflows/upload_asset.sh ./alacritty.1.gz $GITHUB_TOKEN
+          ./.github/workflows/upload_asset.sh ./extra/completions/alacritty.bash $GITHUB_TOKEN
+          ./.github/workflows/upload_asset.sh ./extra/completions/alacritty.fish $GITHUB_TOKEN
+          ./.github/workflows/upload_asset.sh ./extra/completions/_alacritty $GITHUB_TOKEN
+          ./.github/workflows/upload_asset.sh ./extra/linux/Alacritty.desktop $GITHUB_TOKEN
+          ./.github/workflows/upload_asset.sh ./extra/alacritty.info $GITHUB_TOKEN
+          ./.github/workflows/upload_asset.sh ./alacritty.yml $GITHUB_TOKEN
diff --git a/.github/workflows/upload_asset.sh b/.github/workflows/upload_asset.sh
new file mode 100755
index 00000000..3005e707
--- /dev/null
+++ b/.github/workflows/upload_asset.sh
@@ -0,0 +1,93 @@
+#!/bin/bash
+
+# Assure parameters are correct.
+if [ $# -lt 2 ]; then
+    echo "Usage: upload_asset.sh <FILE> <TOKEN>"
+    exit 1
+fi
+
+repo="alacritty/alacritty"
+file_path=$1
+bearer=$2
+
+echo "Starting asset upload from $file_path to $repo."
+
+# Get the release for this tag.
+tag="$(git describe --tags --abbrev=0)"
+
+# Make sure the git tag could be determined.
+if [ -z "$tag" ]; then
+    printf "\e[31mError: Unable to find git tag\e[0m\n"
+    exit 1
+fi
+
+echo "Git tag: $tag"
+
+# Get the upload URL for the current tag.
+#
+# Since this might be a draft release, we can't just use the /releases/tags/:tag
+# endpoint which only shows published releases.
+echo "Checking for existing release..."
+upload_url=$(\
+    curl \
+        -H "Authorization: Bearer $bearer" \
+        "https://api.github.com/repos/$repo/releases" \
+        2> /dev/null \
+    | grep -E "(upload_url|tag_name)" \
+    | paste - - \
+    | grep -e "tag_name\": \"$tag" \
+    | head -n 1 \
+    | sed 's/.*\(https.*assets\).*/\1/' \
+)
+
+# Create a new release if we didn't find one for this tag.
+if [ -z "$upload_url" ]; then
+    echo "No release found."
+    echo "Creating new release..."
+
+    # Create new release.
+    response=$(
+        curl -f \
+            -X POST \
+            -H "Authorization: Bearer $bearer" \
+            -d "{\"tag_name\":\"$tag\",\"draft\":true}" \
+            "https://api.github.com/repos/$repo/releases" \
+            2> /dev/null\
+    )
+
+    # Abort if the release could not be created.
+    if [ $? -ne 0 ]; then
+        printf "\e[31mError: Unable to create new release.\e[0m\n"
+        exit 1;
+    fi
+
+    # Extract upload URL from new release.
+    upload_url=$(\
+        echo "$response" \
+        | grep "upload_url" \
+        | sed 's/.*: "\(.*\){.*/\1/' \
+    )
+fi
+
+# Propagate error if no URL for asset upload could be found.
+if [ -z "$upload_url" ]; then
+    printf "\e[31mError: Unable to find release upload url.\e[0m\n"
+    exit 2
+fi
+
+# Upload the file to the tag's release.
+file_name=${file_path##*/}
+echo "Uploading asset $file_name to $upload_url..."
+curl -f \
+    -X POST \
+    -H "Authorization: Bearer $bearer" \
+    -H "Content-Type: application/octet-stream" \
+    --data-binary @"$file_path" \
+    "$upload_url?name=$file_name" \
+    &> /dev/null \
+|| { \
+    printf "\e[31mError: Unable to upload asset.\e[0m\n" \
+    && exit 3; \
+}
+
+printf "\e[32mSuccess\e[0m\n"