21 lines
597 B
Bash
21 lines
597 B
Bash
#! /bin/sh
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#
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# This file is used by adlc.make to selectively update generated
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# adlc files. Because source and target diretories are relative
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# paths, this file is copied to the target build directory before
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# use.
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#
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# adlc-updater <file> <source-dir> <target-dir>
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#
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fix_lines() {
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# repair bare #line directives in $1 to refer to $2
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awk < $1 > $1+ '
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/^#line 999999$/ {print "#line " (NR+1) " \"" F2 "\""; next}
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{print}
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' F2=$2
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mv $1+ $1
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}
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fix_lines $2/$1 $3/$1
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[ -f $3/$1 ] && cmp -s $2/$1 $3/$1 || \
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( [ -f $3/$1 ] && echo Updating $3/$1 ; touch $2/made-change ; mv $2/$1 $3/$1 )
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