75 lines
2.5 KiB
Bash
Executable File
75 lines
2.5 KiB
Bash
Executable File
#!/usr/bin/env bash
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# Exit immediately if the script encounters a non-zero status.
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set -e
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# If set, Bash includes filenames beginning with a `.` in the results of
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# filename expansion. The filenames `.` and `..` must always be matched
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# explicitly, even if dotglob is set.
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shopt -s dotglob extglob
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# ============================================================
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# PROLOGUE
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# ============================================================
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# Create a new top-level directory as fallback in case $BUILD (defined below)
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# is ever empty.
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mkdir -p "/tmp/bs.nodejs"
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# Create an intermediate build directory. The final step of this script will
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# copy the content from this directory to $OUT.
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BUILD=$(mktemp -d -p "/tmp/bs.nodejs")
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if [ -z "$BUILD" ]; then
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>&2 echo "Failed to create temp directory."
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exit 1
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fi
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# Deletes the intermediate build directory on exit. We use a concatenation of
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# the intermediate directory with the basename of the generated temp directory
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# to ensure we never evaluate to root (i.e. `/`). That should never actually
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# happen but a good habit to establish nonetheless.
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function cleanup {
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rm -r "/tmp/bs.nodejs/$(basename "$BUILD")"
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}
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trap cleanup EXIT
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# ============================================================
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# BUILD
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# ============================================================
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# Copy template contents over to the intermediate build directory.
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cp -r template/* "$BUILD"
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# Copy over the CommonJS module responsible for validating the given NAME.
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mkdir "$BUILD"/bs.nodejs
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cp validate.cjs "$BUILD"/bs.nodejs
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# Explicitly set permissions on all copied files.
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find "$BUILD" -type f -execdir chmod 644 {} +
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find "$BUILD" -type d -execdir chmod 755 {} +
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chmod 755 "$BUILD"/.githooks/pre-commit
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# Validate the provided name is usable.
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nix develop "$BUILD" --command bash -c \
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"npm --prefix $BUILD/bs.nodejs install validate-npm-package-name &&
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node $BUILD/bs.nodejs/validate.cjs"
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# Replace the placeholder name found in the template files.
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sed -i "s/<NAME>/$NAME/g" "$BUILD/flake.nix"
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sed -i "s/<NAME>/$NAME/g" "$BUILD/package.json"
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sed -i "s/<NAME>/$NAME/g" "$BUILD/package-lock.json"
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# Precompute the build hash with the new package name in place.
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nix develop "$BUILD" --command bash -c \
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"cd $BUILD &&
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sed -i \"s,<SHA_256>,\$(prefetch-npm-deps package-lock.json),g\" flake.nix"
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# ============================================================
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# EPILOGUE
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# ============================================================
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# Success! Copy contents to target directory.
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cp -a "$BUILD"/!(bs.nodejs) "$OUT"
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