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#!/usr/bin/env bash
set -uo pipefail
# @describe Read the contents of a file at the specified path.
# Use this when you need to examine the contents of an existing file.
# Without --offset and --limit the whole file is printed.
# @option --path! The path of the file to read
# @option --offset <NUM> Start reading at byte offset (0-based, default: 0)
# @option --limit <NUM> Maximum number of bytes to read
# @env LLM_OUTPUT=/dev/stdout The output path
OUT="${LLM_OUTPUT:-/dev/stdout}"
MAX_BYTES="${LLM_MAX_BYTES:-200000}"
sanitize() {
if command -v iconv >/dev/null 2>&1; then
iconv -f UTF-8 -t UTF-8 -c
else
cat
fi
}
err() {
echo "ERROR: $*" >> "$OUT"
exit 0
}
main() {
path="${argc_path:-}"
[[ -z "$path" ]] && err "missing --path"
[[ ! -e "$path" ]] && err "file not found: $path"
[[ ! -f "$path" ]] && err "not a regular file: $path"
[[ ! -r "$path" ]] && err "file not readable: $path"
# Heuristik: Binärdateien nicht in den Chat kippen
if LC_ALL=C grep -qP '\x00' "$path" 2>/dev/null; then
err "file appears to be binary (NUL bytes detected): $path"
fi
offset="${argc_offset:-0}"
limit="${argc_limit:-}"
# Begrenzung auf MAX_BYTES
if [[ -z "$limit" ]]; then
limit="$MAX_BYTES"
elif [[ "$limit" -gt "$MAX_BYTES" ]]; then
limit="$MAX_BYTES"
fi
if [[ "$offset" -eq 0 ]]; then
head -c "$limit" "$path" | sanitize >> "$OUT"
else
dd if="$path" bs=1 skip="$offset" count="$limit" status=none 2>/dev/null | sanitize >> "$OUT"
fi
exit 0
}
eval "$(argc --argc-eval "$0" "$@")"
main
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