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#!/usr/bin/env bash
REVERSE="\x1b[7m"
RESET="\x1b[m"
if [ -z "$1" ]; then
echo "usage: $0 FILENAME[:LINENO][:IGNORED]"
exit 1
fi
IFS=':' read -r -a INPUT <<< "$1"
FILE=${INPUT[0]}
CENTER=${INPUT[1]}
if [[ $1 =~ ^[A-Z]:\\ ]]; then
FILE=$FILE:${INPUT[1]}
CENTER=${INPUT[2]}
fi
if [ ! -r "$FILE" ]; then
echo "File not found ${FILE}"
exit 1
fi
if [[ "$(file --dereference --mime "$FILE")" =~ binary ]]; then
echo "$1 is a binary file"
exit 0
fi
if [ -z "$CENTER" ]; then
CENTER=0
fi
if [ -z "$LINES" ]; then
if [ -r /dev/tty ]; then
LINES=$(stty size < /dev/tty | awk '{print $1}')
else
LINES=40
fi
fi
FIRST=$(($CENTER-$LINES/3))
FIRST=$(($FIRST < 1 ? 1 : $FIRST))
LAST=$((${FIRST}+${LINES}-1))
DEFAULT_COMMAND="bat --style=numbers --color=always {} || highlight -O ansi -l {} || coderay {} || rougify {} || cat {}"
CMD=${FZF_PREVIEW_COMMAND:-$DEFAULT_COMMAND}
CMD=${CMD//{\}/$(printf %q "$FILE")}
eval "$CMD" 2> /dev/null | awk "NR >= $FIRST && NR <= $LAST { \
if (NR == $CENTER) \
{ gsub(/\x1b[[0-9;]*m/, \"&$REVERSE\"); printf(\"$REVERSE%s\n$RESET\", \$0); } \
else printf(\"$RESET%s\n\", \$0); \
}"
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