From fa080de7afc95aa1c19a6e6fc0e0708ced2eadc4 Mon Sep 17 00:00:00 2001 From: Joseph Hunkeler Date: Wed, 8 Jul 2015 20:46:52 -0400 Subject: Initial commit --- sys/etc/miireadc.x | 50 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 50 insertions(+) create mode 100644 sys/etc/miireadc.x (limited to 'sys/etc/miireadc.x') diff --git a/sys/etc/miireadc.x b/sys/etc/miireadc.x new file mode 100644 index 00000000..9354307c --- /dev/null +++ b/sys/etc/miireadc.x @@ -0,0 +1,50 @@ +# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc. + +include + +# MIIREADC -- Read a block of character data stored externally in MII format. +# Data is returned in the machine independent character format. + +int procedure mii_readc (fd, spp, maxchars) + +int fd # input file +int spp[ARB] # receives data +int maxchars # max number of chars to be read + +pointer sp, bp +int pksize, nchars +int miipksize(), miinelem(), read() +errchk read() + +long note() + +begin + pksize = miipksize (maxchars, MII_BYTE) + nchars = max (maxchars, pksize) + + if (nchars > maxchars) { + # Read data into local buffer and unpack into user buffer. + + call smark (sp) + call salloc (bp, nchars, TY_CHAR) + + nchars = read (fd, Memc[bp], pksize) + if (nchars != EOF) { + nchars = min (maxchars, miinelem (nchars, MII_BYTE)) + call miiupk8 (Memc[bp], spp, nchars, TY_CHAR) + } + + call sfree (sp) + + } else { + # Read data into user buffer and unpack in place. + + nchars = read (fd, spp, pksize) + if (nchars != EOF) { + nchars = min (maxchars, miinelem (nchars, MII_BYTE)) + call miiupk8 (spp, spp, nchars, TY_CHAR) + } + } + + return (nchars) +end -- cgit