safe-migrate 0.8.0

Check PostgreSQL migrations against a synchronized database baseline
Documentation 
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#!/bin/sh
set -eu

action_ref=${1-}
cargo_toml=${2-}

[ -n "$action_ref" ] || {
  printf '%s\n' 'Action reference is required' >&2
  exit 1
}
[ -f "$cargo_toml" ] || {
  printf 'Cargo manifest does not exist: %s\n' "$cargo_toml" >&2
  exit 1
}

package_version=$(sed -n 's/^version = "\([^"]*\)"/\1/p' "$cargo_toml" | head -n 1)
printf '%s\n' "$package_version" | grep -Eq '^[0-9]+\.[0-9]+\.[0-9]+$' || {
  printf '%s\n' 'Could not derive an exact semantic safe-migrate version from Cargo.toml' >&2
  exit 1
}

if printf '%s\n' "$action_ref" | grep -Eq '^v[0-9]+\.[0-9]+\.[0-9]+$'; then
  [ "$action_ref" = "v${package_version}" ] || {
    printf 'Action tag %s does not match package version v%s\n' \
      "$action_ref" "$package_version" >&2
    exit 1
  }
  printf '%s\n' "$action_ref"
elif printf '%s\n' "$action_ref" | grep -Eq '^[0-9a-f]{40}$'; then
  printf '%s\n' source
else
  printf "Published safe-migrate Action references must be an exact semantic tag or full 40-character commit SHA; mutable reference '%s' is not supported\n" \
    "$action_ref" >&2
  exit 1
fi