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42 lines
1.0 KiB
42 lines
1.0 KiB
2 years ago
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#!/bin/sh
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# bg_log: a script to output a message from a background process, while taking
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# into account the user's current input and preserving it.
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#
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# Cast this spell to send a message from a background process to the terminal,
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# without interrupting or overwriting the user's input.
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# todo: refactor this to use the cursor file
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bg_log() {
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# Save the current cursor position
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printf '\033[s'
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# Calculate the number of lines used by the user's input
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lines=$(current_input_lines)
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# Move the cursor up the number of lines used by the user's input
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printf '\033[%dA' "$lines"
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# Clear the current line
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printf '\033[2K'
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# Output the message
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printf '%s\n' "$@"
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# Clear the current line
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printf '\033[2K'
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# Move the cursor down the number of lines used by the user's input
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printf '\033[%dB' "$lines"
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# Restore the cursor position
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printf '\033[u'
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}
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# Check if the script is being executed or sourced
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if [ "$0" = "$BASH_SOURCE" ]; then
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# Script is being executed, call the bg_log function to output a message
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bg_log $1
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fi
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