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Viewing changes to tools/sfio/sfgetu.c

  • Committer: Bazaar Package Importer
  • Author(s): Stephen M Moraco
  • Date: 2002-02-05 18:52:12 UTC
  • Revision ID: james.westby@ubuntu.com-20020205185212-8i04c70te00rc40y
Tags: upstream-1.7.16
Import upstream version 1.7.16

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tools/sfio/sfgetu.c
 
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#include        "sfhdr.h"
 
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/*      Read an unsigned long value coded in a portable format.
 
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**
 
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**      Written by Kiem-Phong Vo
 
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*/
 
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#if __STD_C
 
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Sfulong_t sfgetu(reg Sfio_t* f)
 
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#else
 
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Sfulong_t sfgetu(f)
 
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reg Sfio_t*     f;
 
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#endif
 
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{
 
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        Sfulong_t       v;
 
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        reg uchar       *s, *ends, c;
 
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        reg int         p;
 
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        SFMTXSTART(f, (Sfulong_t)(-1));
 
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        if(f->mode != SF_READ && _sfmode(f,SF_READ,0) < 0)
 
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                SFMTXRETURN(f, (Sfulong_t)(-1));
 
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        SFLOCK(f,0);
 
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        for(v = 0;;)
 
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        {       if(SFRPEEK(f,s,p) <= 0)
 
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                {       f->flags |= SF_ERROR;
 
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                        v = (Sfulong_t)(-1);
 
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                        goto done;
 
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                }
 
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                for(ends = s+p; s < ends;)
 
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                {       c = *s++;
 
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                        v = (v << SF_UBITS) | SFUVALUE(c);
 
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                        if(!(c&SF_MORE))
 
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                        {       f->next = s;
 
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                                goto done;
 
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                        }
 
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                }
 
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                f->next = s;
 
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        }
 
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done:
 
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        SFOPEN(f,0);
 
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        SFMTXRETURN(f, v);
 
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}