109 lines
2.6 KiB
Bash
Executable File
109 lines
2.6 KiB
Bash
Executable File
#!/usr/bin/env bash
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# This script regenerates hyper.h. As of April 2021, it only works with the
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# nightly build of Rust.
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set -e
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CAPI_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
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WORK_DIR=$(mktemp -d)
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# check if tmp dir was created
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if [[ ! "$WORK_DIR" || ! -d "$WORK_DIR" ]]; then
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echo "Could not create temp dir"
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exit 1
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fi
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header_file_backup="$CAPI_DIR/include/hyper.h.backup"
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function cleanup {
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rm -rf "$WORK_DIR"
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rm "$header_file_backup" || true
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}
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trap cleanup EXIT
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mkdir "$WORK_DIR/src"
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# Fake a library
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cat > "$WORK_DIR/src/lib.rs" << EOF
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#[path = "$CAPI_DIR/../src/ffi/mod.rs"]
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pub mod ffi;
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EOF
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# And its Cargo.toml
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cat > "$WORK_DIR/Cargo.toml" << EOF
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[package]
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name = "hyper"
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version = "0.0.0"
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edition = "2018"
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publish = false
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[dependencies]
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# Determined which dependencies we need by running the "cargo rustc" command
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# below and watching the compile error output for references to unknown imports,
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# until we didn't get any errors.
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bytes = "1"
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futures-channel = "0.3"
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futures-util = { version = "0.3", default-features = false, features = ["alloc"] }
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libc = { version = "0.2", optional = true }
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http = "0.2"
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http-body = "0.4"
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tokio = { version = "1", features = ["rt"] }
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[features]
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default = [
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"client",
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"ffi",
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"http1",
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]
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http1 = []
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client = []
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ffi = ["libc", "tokio/rt"]
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EOF
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cp "$CAPI_DIR/include/hyper.h" "$header_file_backup"
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#cargo metadata --no-default-features --features ffi --format-version 1 > "$WORK_DIR/metadata.json"
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cd "${WORK_DIR}" || exit 2
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# Expand just the ffi module
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if ! output=$(RUSTFLAGS='--cfg hyper_unstable_ffi' cargo rustc -- -Z unpretty=expanded 2>&1 > expanded.rs); then
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# As of April 2021 the script above prints a lot of warnings/errors, and
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# exits with a nonzero return code, but hyper.h still gets generated.
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#
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# However, on Github Actions, this will result in automatic "annotations"
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# being added to files not related to a PR, so if this is `--verify` mode,
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# then don't show it.
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#
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# But yes show it when using it locally.
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if [[ "--verify" != "$1" ]]; then
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echo "$output"
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fi
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fi
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# Replace the previous copy with the single expanded file
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rm -rf ./src
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mkdir src
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mv expanded.rs src/lib.rs
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# Bindgen!
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if ! cbindgen \
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--config "$CAPI_DIR/cbindgen.toml" \
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--lockfile "$CAPI_DIR/../Cargo.lock" \
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--output "$CAPI_DIR/include/hyper.h" \
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"${@}"; then
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bindgen_exit_code=$?
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if [[ "--verify" == "$1" ]]; then
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echo "diff generated (<) vs backup (>)"
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diff "$CAPI_DIR/include/hyper.h" "$header_file_backup"
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fi
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exit $bindgen_exit_code
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fi
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exit 0
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