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#!/bin/bash
set -eu
# Build the book before making any changes for comparison of the output.
echo 'Building book into tmp/book-before before updating...'
mdbook build -d tmp/book-before
# Rustfmt all listings
echo 'Formatting all listings...'
find -s listings -name Cargo.toml -print0 | while IFS= read -r -d '' f; do
dir_to_fmt=$(dirname "$f")
# There are a handful of listings we don't want to rustfmt and skipping
# doesn't work; those will have a file in their directory that explains why.
if [ ! -f "${dir_to_fmt}/rustfmt-ignore" ]; then
cd "$dir_to_fmt"
cargo fmt --all && true
cd - > /dev/null
fi
done
# Get listings without anchor comments in tmp by compiling a release listings
# artifact
echo 'Generate listings without anchor comments...'
cargo run --bin release_listings
root_dir=$(pwd)
echo 'Regenerating output...'
# For any listings where we show the output,
find -s listings -name output.txt -print0 | while IFS= read -r -d '' f; do
build_directory=$(dirname "$f")
full_build_directory="${root_dir}/${build_directory}"
full_output_path="${full_build_directory}/output.txt"
tmp_build_directory="tmp/${build_directory}"
cd "$tmp_build_directory"
# Save the previous compile time; we're going to keep it to minimize diff
# churn
compile_time=$(sed -E -ne 's/.*Finished (dev|test) \[unoptimized \+ debuginfo] target\(s\) in ([0-9.]*).*/\2/p' "${full_output_path}")
# Save the hash from the first test binary; we're going to keep it to
# minimize diff churn
test_binary_hash=$(sed -E -ne 's@.*Running [^[:space:]]+( [^[:space:]\(\)]+)? \(target/debug/deps/[^-]*-([^\s]*)\)@\2@p' "${full_output_path}" | head -n 1)
# Act like this is the first time this listing has been built
cargo clean
# Run the command in the existing output file
cargo_command=$(sed -ne 's/$ \(.*\)/\1/p' "${full_output_path}")
# Clear the output file of everything except the command
echo "$ ${cargo_command}" > "${full_output_path}"
# Regenerate the output and append to the output file. Turn some warnings
# off to reduce output noise, and use one test thread to get consistent
# ordering of tests in the output when the command is `cargo test`.
RUSTFLAGS="-A unused_variables -A dead_code" RUST_TEST_THREADS=1 $cargo_command >> "${full_output_path}" 2>&1 || true
# Set the project file path to the projects directory plus the crate name
# instead of a path to the computer of whoever is running this
sed -i '' -E -e 's@(Compiling|Checking) ([^\)]*) v0.1.0 (.*)@\1 \2 v0.1.0 (file:///projects/\2)@' "${full_output_path}"
# Restore the previous compile time, if there is one
if [ -n "${compile_time}" ]; then
sed -i '' -E -e "s/Finished (dev|test) \[unoptimized \+ debuginfo] target\(s\) in [0-9.]*/Finished \1 [unoptimized + debuginfo] target(s) in ${compile_time}/" "${full_output_path}"
fi
# Restore the previous test binary hash, if there is one
if [ -n "${test_binary_hash}" ]; then
replacement='s@Running ([^[:space:]]+)( [^[:space:]\(\)]+)? \(target/debug/deps/([^-]*)-([^\s]*)\)@Running \1\2 (target/debug/deps/\3-'
replacement+="${test_binary_hash}"
replacement+=')@g'
sed -i '' -E -e "${replacement}" "${full_output_path}"
fi
# Clean again
cargo clean
cd - > /dev/null
done
# Build the book after making all the changes
echo 'Building book into tmp/book-after after updating...'
mdbook build -d tmp/book-after
# Run the megadiff script that removes all files that are the same, leaving only files to audit
echo 'Removing tmp files that had no changes from the update...'
./tools/megadiff.sh
echo 'Done.'
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