45 lines
1.3 KiB
Bash
45 lines
1.3 KiB
Bash
#!/usr/bin/env bash
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# Split a generated C-file into the command used to generate it,
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# and the outputted code itself.
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# This is useful because it allows input and output to be inside the same file
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# How it works:
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# - The first line needs to start with '//' (and becomes the command).
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# - Whitespace/padding between the comment and the generated code is ignored
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# - To write a command using multiple lines, end each line with backslash (\)
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# Count the number of lines before the output text starts
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# commandLineCount FILE
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commandLineCount() {
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local n state
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n=0
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state="init"
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while IFS="" read -r p || [ -n "$p" ]; do
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case $state in
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init)
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if [[ $p =~ ^//.*\\$ ]]; then state="comment"
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elif [[ $p =~ ^//.* ]]; then state="padding"
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else break
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fi
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;;
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comment) [[ ! $p =~ ^.*\\$ ]] && state="padding";;
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padding) [ -n "${p// }" ] && break;;
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esac
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n=$((n+1))
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done < "$1"
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printf '%s' "$n"
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}
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# getInputCommand FILE
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getInputCommand() {
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n=$(commandLineCount "$1")
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head -n "$n" "$1" | awk '{ if (NR == 1) print substr($0, 3); else print $0 }'
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}
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# getOutputText FILE
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getOutputText() {
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n=$(commandLineCount "$1")
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sed "1,${n}d" "$1"
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}
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