initial: first POSIX iterations

2 files changed, 158 insertions, 0 deletions

diff --git a/build-code-server.sh b/build-code-server.sh
new file mode 100755
index 0000000..60d904b
--- /dev/null
+++ b/build-code-server.sh
@@ -0,0 +1,136 @@
+#!/bin/sh
+
+# build-code-server.sh
+# downloads the official code-server release and packages it as a portable AppImage.
+# the resulting AppImage bundles everything and requires no system installation.
+
+# usage:
+#   sh build-code-server.sh
+#   PKGVER=4.420.0 sh build-code-server.sh    # override version
+#
+# running the output AppImage:
+#   regular:  ./code-server-VERSION-ARCH.AppImage [args]
+#   docker:   APPIMAGE_EXTRACT_AND_RUN=1 ./code-server-VERSION-ARCH.AppImage [args]
+
+set -e
+
+PKGVER="${PKGVER:-4.118.0}"
+PKGNAME="code-server"
+GITHUB_URL="https://github.com/coder/code-server"
+
+# - check required tools
+for _cmd in curl tar; do
+    if ! command -v "$_cmd" > /dev/null 2>&1; then
+        printf 'error: required tool not found: %s\n' "$_cmd" >&2
+        exit 1
+    fi
+done
+
+# - detect host architecture
+UNAME_ARCH="$(uname -m)"
+case "$UNAME_ARCH" in
+    x86_64)
+        RELEASE_ARCH="amd64"
+        ;;
+    aarch64)
+        RELEASE_ARCH="arm64"
+        ;;
+    *)
+        printf 'error: unsupported architecture: %s\n' "$UNAME_ARCH" >&2
+        exit 1
+        ;;
+esac
+
+RELEASE_NAME="${PKGNAME}-${PKGVER}-linux-${RELEASE_ARCH}"
+TARBALL="${RELEASE_NAME}.tar.gz"
+TARBALL_URL="${GITHUB_URL}/releases/download/v${PKGVER}/${TARBALL}"
+APPIMAGETOOL_URL="https://github.com/AppImage/AppImageKit/releases/download/continuous/appimagetool-${UNAME_ARCH}.AppImage"
+
+# - icon urls: try versioned tag, fall back to main branch
+ICON_URL="https://raw.githubusercontent.com/coder/code-server/v${PKGVER}/src/browser/media/pwa-icon-512.png"
+ICON_FALLBACK_URL="https://raw.githubusercontent.com/coder/code-server/main/src/browser/media/pwa-icon-512.png"
+
+OUTPUT_DIR="$(pwd)"
+WORKDIR="$(mktemp -d)"
+APPDIR="${WORKDIR}/AppDir"
+
+# - always clean up temp workdir on exit
+cleanup() {
+    rm -rf "$WORKDIR"
+}
+trap cleanup EXIT INT TERM
+
+printf '==> setting up build directory...\n'
+mkdir -p \
+    "${APPDIR}/usr/lib" \
+    "${APPDIR}/usr/bin" \
+    "${APPDIR}/usr/share/icons/hicolor/512x512/apps"
+
+cd "$WORKDIR"
+
+# - download the official pre-built release tarball (same source as PKGBUILD)
+printf '==> downloading code-server v%s (%s)...\n' "$PKGVER" "$RELEASE_ARCH"
+curl -fL --progress-bar -o "$TARBALL" "$TARBALL_URL"
+
+printf '==> extracting tarball...\n'
+tar -xzf "$TARBALL"
+
+printf '==> populating AppDir...\n'
+cp -a "${RELEASE_NAME}" "${APPDIR}/usr/lib/${PKGNAME}"
+
+# - AppRun is the entrypoint; resolves paths relative to the AppImage mount
+cat > "${APPDIR}/AppRun" << 'APPRUN_EOF'
+#!/bin/sh
+# apprun - entrypoint for code-server AppImage
+SELF="$(readlink -f "$0")"
+HERE="$(dirname "$SELF")"
+export PATH="${HERE}/usr/bin:${PATH}"
+exec "${HERE}/usr/lib/code-server/bin/code-server" "$@"
+APPRUN_EOF
+chmod +x "${APPDIR}/AppRun"
+
+# - .desktop file is required by the AppImage spec
+cat > "${APPDIR}/${PKGNAME}.desktop" << DESKTOP_EOF
+[Desktop Entry]
+Name=code-server
+Comment=VS Code in the browser
+Exec=code-server
+Icon=code-server
+Type=Application
+Categories=Development;IDE;
+DESKTOP_EOF
+
+# - fetch icon; fall back to main branch if the versioned tag path differs
+printf '==> downloading icon...\n'
+if ! curl -fsSL -o "${APPDIR}/usr/share/icons/hicolor/512x512/apps/${PKGNAME}.png" "$ICON_URL"; then
+    printf '    versioned icon not found, trying main branch...\n'
+    curl -fL --progress-bar \
+        -o "${APPDIR}/usr/share/icons/hicolor/512x512/apps/${PKGNAME}.png" \
+        "$ICON_FALLBACK_URL"
+fi
+
+# - appimage spec also requires the icon at the AppDir root
+cp "${APPDIR}/usr/share/icons/hicolor/512x512/apps/${PKGNAME}.png" \
+   "${APPDIR}/${PKGNAME}.png"
+
+# - download appimagetool (itself an AppImage; APPIMAGE_EXTRACT_AND_RUN avoids FUSE dependency)
+printf '==> downloading appimagetool (%s)...\n' "$UNAME_ARCH"
+curl -fL --progress-bar -o "${WORKDIR}/appimagetool" "$APPIMAGETOOL_URL"
+chmod +x "${WORKDIR}/appimagetool"
+
+# - build the AppImage
+# - APPIMAGE_EXTRACT_AND_RUN=1 lets appimagetool run without FUSE (required in Docker)
+# - ARCH must be set so appimagetool embeds the correct ELF architecture tag
+OUTPUT="${OUTPUT_DIR}/${PKGNAME}-${PKGVER}-${UNAME_ARCH}.AppImage"
+printf '==> building AppImage...\n'
+ARCH="$UNAME_ARCH" APPIMAGE_EXTRACT_AND_RUN=1 \
+    "${WORKDIR}/appimagetool" --comp gzip \
+    "${APPDIR}" "${OUTPUT}"
+
+chmod +x "${OUTPUT}"
+
+printf '\n==> done!\n'
+printf '    output: %s\n\n' "$OUTPUT"
+printf 'usage:\n'
+printf '  regular system:   ./%s-%s-%s.AppImage\n' "$PKGNAME" "$PKGVER" "$UNAME_ARCH"
+printf '  docker/no-fuse:   APPIMAGE_EXTRACT_AND_RUN=1 ./%s-%s-%s.AppImage\n' "$PKGNAME" "$PKGVER" "$UNAME_ARCH"
diff --git a/code-server-wrapper.sh b/code-server-wrapper.sh
new file mode 100755
index 0000000..612d2ab
--- /dev/null
+++ b/code-server-wrapper.sh
@@ -0,0 +1,22 @@
+#!/bin/sh
+
+APPIMAGE_DIR="/opt/code-server-appimage"
+
+# - find the AppImage; fail clearly if missing or ambiguous
+_match="$(find "$APPIMAGE_DIR" -maxdepth 1 -name 'code-server-*.AppImage' 2>/dev/null)"
+_count="$(printf '%s\n' "$_match" | grep -c 'AppImage' 2>/dev/null || echo 0)"
+
+if [ "$_count" -eq 0 ]; then
+    printf 'error: no code-server AppImage found in %s\n' "$APPIMAGE_DIR" >&2
+    exit 1
+fi
+
+if [ "$_count" -gt 1 ]; then
+    printf 'error: multiple AppImages found in %s - keep only one:\n' "$APPIMAGE_DIR" >&2
+    printf '%s\n' "$_match" >&2
+    exit 1
+fi
+
+APPIMAGE="$_match"
+export APPIMAGE_EXTRACT_AND_RUN=1
+exec "$APPIMAGE" "$@"