55 lines
1.3 KiB
Bash
Executable File
55 lines
1.3 KiB
Bash
Executable File
#!/usr/bin/env zsh
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# Highlight cat output with either $CATOPEN, ~/.lessfilter or $LESSOPEN. The
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# command needs to have %s in it that will be replaced with input files (one by
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# one). Some programs that are known to not work will be ignored in $LESSOPEN
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# but not in $CATOPEN.
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# Example:
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# export CATOPEN="highlight --force --out-format=truecolor --stdout %s"
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# alias cat='cat-highlight'
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setopt LOCAL_OPTIONS PIPE_FAIL
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# Check if we are in a terminal
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if [[ ! -t 1 ]]; then
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\cat ${@}
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return ${?}
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fi
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# Try to find highlighter
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if [[ -v CATOPEN && -n ${CATOPEN} ]]; then
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local catopen=${CATOPEN}
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elif [[ -x ~/.lessfilter ]]; then
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local catopen="~/.lessfilter %s"
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elif [[ -v LESSOPEN && -n ${LESSOPEN} ]]; then
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local catopen="${LESSOPEN/|/}"
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# Programs that won't work with cat
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local -a known_bad=("lesspipe")
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for baddy in ${known_bad}; do
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if [[ ${LESSOPEN} =~ ${baddy} ]]; then
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unset catopen
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fi
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done
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fi
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if [[ ! -v catopen ]]; then
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\cat ${@}
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return ${?}
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fi
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local -a args
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local -a files
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for arg in ${@}; do
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# Filter out file names
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if [[ ${arg[1]} != "-" ]]; then
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files+=${(q)arg}
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else
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args+=${arg}
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fi
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done
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for file in ${files}; do
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eval "${catopen/\%s/${file}}" 2>& -
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[[ ${?} -ne 0 ]] && \cat ${file}
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done | \cat ${args}
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