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#!/usr/bin/env bash
# Validate every generated EPUB with epubcheck (the official EPUB validator).
# Exits non-zero if any EPUB has errors, so it can gate CI.
#
# Requires epubcheck on PATH (e.g. `brew install epubcheck`).
set -uo pipefail
if ! command -v epubcheck >/dev/null 2>&1; then
echo "error: epubcheck not found. Install it (e.g. 'brew install epubcheck')." >&2
exit 127
fi
shopt -s nullglob
epubs=(epubs/*.epub)
if [ ${#epubs[@]} -eq 0 ]; then
echo "error: no EPUBs in epubs/. Run 'zig build run' first." >&2
exit 1
fi
fail=0
for f in "${epubs[@]}"; do
if epubcheck "$f" >/dev/null 2>&1; then
echo "PASS $f"
else
echo "FAIL $f"
epubcheck "$f" 2>&1 | grep -E '^(ERROR|FATAL|WARNING)' | sed 's/^/ /'
fail=1
fi
done
exit $fail
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