Add exclamation marks to poke procedure names
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@ -4,13 +4,13 @@
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(define nulls (make-bytevector 512 0))
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(define zeros (make-bytevector 12 (char->integer #\0)))
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(define (tar-poke-string header at nbyte string)
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(define (tar-poke-string! header at nbyte string)
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(let* ((bytes (string->utf8 string))
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(nnull (- nbyte (bytevector-length bytes))))
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(when (< nnull 0) (error "tar: string too long"))
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(bytevector-copy! header at bytes)))
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(define (tar-poke-octal header at nbyte number)
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(define (tar-poke-octal! header at nbyte number)
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(unless (integer? number) (error "tar: not an integer"))
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(when (< number 0) (error "tar: negative integer"))
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(let* ((bytes (string->utf8 (number->string number 8)))
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@ -32,19 +32,19 @@
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(nbyte (bytevector-length bytes))
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(nnull (- 512 (truncate-remainder nbyte 512)))
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(unix-time-now 0))
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(tar-poke-string header 0 100 fake-path)
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(tar-poke-octal header 100 8 #o644)
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(tar-poke-octal header 108 8 0)
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(tar-poke-octal header 116 8 0)
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(tar-poke-octal header 124 12 nbyte)
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(tar-poke-octal header 136 12 unix-time-now)
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(tar-poke-string! header 0 100 fake-path)
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(tar-poke-octal! header 100 8 #o644)
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(tar-poke-octal! header 108 8 0)
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(tar-poke-octal! header 116 8 0)
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(tar-poke-octal! header 124 12 nbyte)
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(tar-poke-octal! header 136 12 unix-time-now)
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(bytevector-copy! header 148 (make-bytevector 8 (char->integer #\space)))
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(bytevector-u8-set! header 156 (char->integer #\0))
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(tar-poke-string header 157 100 "")
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(tar-poke-string header 257 8 "ustar ")
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(tar-poke-string header 265 32 "root")
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(tar-poke-string header 297 32 "root")
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(tar-poke-octal header 148 7 (tar-header-checksum header))
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(tar-poke-string! header 157 100 "")
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(tar-poke-string! header 257 8 "ustar ")
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(tar-poke-string! header 265 32 "root")
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(tar-poke-string! header 297 32 "root")
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(tar-poke-octal! header 148 7 (tar-header-checksum header))
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(write-bytevector header)
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(write-bytevector bytes)
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(write-bytevector nulls (current-output-port) 0 nnull)))
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