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hyper/capi/gen_header.sh

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#!/usr/bin/env bash
#
# This script regenerates hyper.h.
# nightly build of Rust.
#
# Requirements:
#
# cargo install cbindgen
# cargo install cargo-expand
set -e
CAPI_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
header_file="$CAPI_DIR/include/hyper.h"
header_file_backup="$CAPI_DIR/include/hyper.h.backup"
verify_flag=$1
function cleanup {
rm -rf "$WORK_DIR" || true
if [[ "--verify" == "$verify_flag" ]]; then
rm "$header_file_backup" || true
fi
}
trap cleanup EXIT
WORK_DIR=$(mktemp -d)
# check if tmp dir was created
if [[ ! "$WORK_DIR" || ! -d "$WORK_DIR" ]]; then
echo "Could not create temp dir"
exit 1
fi
# backup hyper.h
if [[ "--verify" == "$verify_flag" ]]; then
cp "$header_file" "$header_file_backup"
fi
# Expand just the ffi module
if ! RUSTFLAGS='--cfg hyper_unstable_ffi' cargo expand --features client,http1,http2,ffi ::ffi 2> $WORK_DIR/expand_stderr.err > $WORK_DIR/expanded.rs; then
cat $WORK_DIR/expand_stderr.err
fi
# Bindgen!
if ! cbindgen \
--config "$CAPI_DIR/cbindgen.toml" \
--lockfile "$CAPI_DIR/../Cargo.lock" \
--output "$header_file" \
"${@}"\
$WORK_DIR/expanded.rs 2> $WORK_DIR/cbindgen_stderr.err; then
bindgen_exit_code=$?
if [[ "--verify" == "$verify_flag" ]]; then
echo "Changes from previous header (old < > new)"
diff -u "$header_file_backup" "$header_file"
else
echo "cbindgen failed:"
cat $WORK_DIR/cbindgen_stderr.err
fi
exit $bindgen_exit_code
fi
exit 0