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fmtls.c

/***********************************************************************
*                                                                      *
*               This software is part of the ast package               *
*          Copyright (c) 1985-2007 AT&T Intellectual Property          *
*                      and is licensed under the                       *
*                  Common Public License, Version 1.0                  *
*                    by AT&T Intellectual Property                     *
*                                                                      *
*                A copy of the License is available at                 *
*            http://www.opensource.org/licenses/cpl1.0.txt             *
*         (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9)         *
*                                                                      *
*              Information and Software Systems Research               *
*                            AT&T Research                             *
*                           Florham Park NJ                            *
*                                                                      *
*                 Glenn Fowler <gsf@research.att.com>                  *
*                  David Korn <dgk@research.att.com>                   *
*                   Phong Vo <kpv@research.att.com>                    *
*                                                                      *
***********************************************************************/
#pragma prototyped
/*
 * Glenn Fowler
 * AT&T Bell Laboratories
 *
 * ls formatter
 */

#include <ast.h>
#include <ls.h>
#include <tm.h>

#ifndef LS_W_MAX
#define LS_W_MAX  128
#endif

/*
 * ls formatter
 *
 *    buf   results placed here
 *    name  file name
 *    st    file stat buffer
 *    info  optional info
 *    link  link text if != 0
 *    flags LS_* flags
 *
 *    return      end of formatted buf
 */

char*
fmtls(char* buf, const char* name, register struct stat* st, const char* info, const char* link, register int flags)
{
      register char*          s;
      time_t                  tm;
      Sfoff_t                 n;

      s = buf;
      if (flags & LS_INUMBER)
            s += sfsprintf(s, LS_W_MAX, "%*I*u ", LS_W_INUMBER - 1, sizeof(st->st_ino), st->st_ino);
      if (flags & LS_BLOCKS)
      {
            n = iblocks(st);
            s += sfsprintf(s, LS_W_MAX, "%*I*u ", LS_W_BLOCKS - 1, sizeof(n), n);
      }
      if (flags & LS_LONG)
      {
            s += sfsprintf(s, LS_W_MAX, "%s%3u", fmtmode(st->st_mode, flags & LS_EXTERNAL), (unsigned int)st->st_nlink);
            if (!(flags & LS_NOUSER))
            {
                  if (flags & LS_NUMBER)
                        s += sfsprintf(s, LS_W_MAX, " %-*I*d", LS_W_NAME - 1, sizeof(st->st_uid), st->st_uid);
                  else
                        s += sfsprintf(s, LS_W_MAX, " %-*s", LS_W_NAME - 1, fmtuid(st->st_uid));
            }
            if (!(flags & LS_NOGROUP))
            {
                  if (flags & LS_NUMBER)
                        s += sfsprintf(s, LS_W_MAX, " %-*I*d", LS_W_NAME - 1, sizeof(st->st_gid), st->st_gid);
                  else
                        s += sfsprintf(s, LS_W_MAX, " %-*s", LS_W_NAME - 1, fmtgid(st->st_gid));
            }
            if (S_ISBLK(st->st_mode) || S_ISCHR(st->st_mode))
                  s += sfsprintf(s, LS_W_MAX, "%8s ", fmtdev(st));
            else
                  s += sfsprintf(s, LS_W_MAX, "%8I*u ", sizeof(st->st_size), st->st_size);
            tm = (flags & LS_ATIME) ? st->st_atime : (flags & LS_CTIME) ? st->st_ctime : st->st_mtime;
            s = tmfmt(s, LS_W_LONG / 2, "%?%l", &tm);
            *s++ = ' ';
      }
      if (info)
      {
            while (*s = *info++)
                  s++;
            *s++ = ' ';
      }
      while (*s = *name++)
            s++;
      if (flags & LS_MARK)
      {
            if (S_ISDIR(st->st_mode))
                  *s++ = '/';
#ifdef S_ISLNK
            else if (S_ISLNK(st->st_mode))
                  *s++ = '@';
#endif
            else if (st->st_mode & (S_IXUSR|S_IXGRP|S_IXOTH))
                  *s++ = '*';
      }
      if (link)
      {
            s += sfsprintf(s, LS_W_MAX, " %s %s",
#ifdef S_ISLNK
                  S_ISLNK(st->st_mode) ? "->" :
#endif
                        "==", link);
      }
      *s = 0;
      return s;
}

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