42 lines
755 B
Bash
Executable file
42 lines
755 B
Bash
Executable file
#!/usr/bin/env bash
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n_spaces="$1"
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if [ ! "$n_spaces" ]; then
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n_spaces=4
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fi
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if [ $n_spaces -lt 1 ]; then
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echo 'Sorry. Number of spaces should be a positive number'
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exit 1
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fi
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space=''
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i=0
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while [ true ]; do
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space="$space "
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i=$(( $i + 1 ))
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if [ $i -eq $n_spaces ]; then
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break
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fi
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done
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while IFS='' read -r line || [[ -n "$line" ]]; do
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if [[ ${line:0:1} != ' ' ]]; then
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echo "$line"
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continue
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fi
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# Line length
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line_len=${#line}
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# Get leading tabs and their length
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tabs=$(echo "$line" | sed -n 's/^\( *\)\(.*\)$/\1/p')
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tabs_len=${#tabs}
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line_without_tabs_len=$(( $line_len - $tabs_len ))
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line_without_tabs=${line:$tabs_len:$line_without_tabs_len}
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spaces=$(echo "$tabs" | sed "s/ /$space/g")
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echo "$spaces$line_without_tabs"
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done
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