32 lines
1.2 KiB
Text
32 lines
1.2 KiB
Text
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#!/usr/bin/env sh
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: \
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&& complain()
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{ : \
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&& printf '\033[1m%s\033[m: %s\n' >&2 dedupe "$*" \
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;} \
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\
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&& { : \
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&& [ -d /tmp ] \
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|| { complain "/tmp must be mounted"; exit 72 ;} \
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;} \
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\
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&& f="$(mktemp)" \
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\
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&& { : \
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&& [ -s "$f" ] \
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|| { : \
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&& cat >"$f" <<'EOF'
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BEGIN{if(!D){print U;exit 64}E=(Q="'")"\"'\""Q;H=(G=".")(F="/");I=" -- "Q;J="[^/]*/";sub(F"?$",F,D)gsub(Q,E,D)}function C(x){if(X=system(x))exit X}{if((p=$2)==B){print V;exit 65}for(r=z=i=d=B;d!=!i;i++){b=a=p;d=sub("/.*",B,a);sub(J,B,p);if(a==G G)e=!sub(J,B,z);else z=a==G?z:b!=a?z a F:z a;if(e||!i&&!a){print W;exit 65}}P=p=!z?H:z;if((o=O[$1])==p)next;gsub(Q,E,P);M=m=D P;gsub("/[^/]+$",B,M);if(!u[M]++)C("mkdir -p"I M Q);if(o){T=split(o,t,F);S=split(p,s,F);for(i=1;t[i]==s[i];i++);for(j=i;j<S;j++)r=r G H;for(j=i;j<T;j++)r=r t[j]F;r=h?o:r t[T];gsub(Q,E,r);C("ln"(h?I D:" -s"I)r"' '"m Q);next}O[$1]=p;C("cp -i"I P"' '"m Q)}
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EOF
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`##`;} \
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;} \
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\
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&& h=0 && { [ "$1" != --hard ] || shift && h=1 ;} \
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&& cd "$1" && shift && D="$1" && shift && t="$(mktemp)" \
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&& { [ $# -eq 0 ] || sha256sum >"$t" "$@" ;} \
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&& find ! -type d -exec sha256sum {} + >>"$t~" \
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&& sort -k2, <"$t~" >>"$t" \
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&& awk -v D="$D" -v h="$h" -F' ' -f "$f" <"$t" \
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;
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