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Pristine unpack of ftp://sunsite.icm.edu.pl/pub/unix/UnixArchive/Distributions/Resear...
[v7.git]
/
usr
/
src
/
cmd
/
sh
/
string.c
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#
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/*
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* UNIX shell
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*
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* S. R. Bourne
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* Bell Telephone Laboratories
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*
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*/
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#include "defs.h"
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/* ======== general purpose string handling ======== */
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STRING movstr(a,b)
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REG STRING a, b;
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{
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WHILE *b++ = *a++ DONE
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return(--b);
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}
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INT any(c,s)
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REG CHAR c;
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STRING s;
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{
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REG CHAR d;
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WHILE d = *s++
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DO IF d==c
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THEN return(TRUE);
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FI
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OD
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return(FALSE);
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}
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INT cf(s1, s2)
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REG STRING s1, s2;
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{
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WHILE *s1++ == *s2
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DO IF *s2++==0
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THEN return(0);
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FI
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OD
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return(*--s1 - *s2);
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}
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INT length(as)
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STRING as;
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{
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REG STRING s;
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IF s=as THEN WHILE *s++ DONE FI
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return(s-as);
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}