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Annotation of 43BSD/contrib/icon/src/lib/strutil.icn, revision 1.1

1.1     ! root        1: #      STRUTIL(2)
        !             2: #
        !             3: #      String utilities
        !             4: #
        !             5: #      Ralph E. Griswold
        !             6: #
        !             7: #      Last modified 7/10/83
        !             8: #
        !             9: 
        !            10: #  compress characters
        !            11: #
        !            12: procedure compress(s,c)
        !            13:    local i
        !            14:    i := 0
        !            15:    while i := upto(c,s,i + 1) do
        !            16:       s := s[1:i + 1] || s[many(s[i],s,i):0]
        !            17:    return s
        !            18: end
        !            19: 
        !            20: #  delete characters
        !            21: #
        !            22: procedure delete(s,c)
        !            23:    local i
        !            24:    while i := upto(c,s) do
        !            25:       s[i:many(c,s,i)] := ""
        !            26:    return s
        !            27: end
        !            28: 
        !            29: #  rotate string
        !            30: #
        !            31: procedure rotate(s,i)
        !            32:   /i := 1
        !            33:    if i <= 0 then i +:= *s
        !            34:    i %:= *s
        !            35:    return s[i + 1:0] || s[1:i + 1]
        !            36: end

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