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/*    Copyright (C) 1998-2003 XIAO, Gang of Universite de Nice - Sophia Antipolis
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 *
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 *  This program is free software; you can redistribute it and/or modify
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 *  it under the terms of the GNU General Public License as published by
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 *  the Free Software Foundation; either version 2 of the License, or
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 *  (at your option) any later version.
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 *
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 *  This program is distributed in the hope that it will be useful,
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 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
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 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 *  GNU General Public License for more details.
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 *
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 *  You should have received a copy of the GNU General Public License
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 *  along with this program; if not, write to the Free Software
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 *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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 */
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/* Subroutines to process matrices
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 * messages: inconsistent_columns
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 */
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#include "wims.h"
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/* Translate error-laden raw matrix input into a standard form. */
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void rawmatrix(char *p)
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{
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  char *p1;
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  char lbuf[MAX_LINELEN+1], obuf[MAX_LINELEN+1];
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  int n, i, c=0, change=0;
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  obuf[0]=0;
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  p1=find_word_start(p); if(p1>p) ovlstrcpy(p,p1);
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  strip_enclosing_par(p); strip_trailing_spaces(p);
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  if(*p==0) return;
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  rows2lines(p); n=linenum(p);
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  if(itemnum(p)<=1 && wordnum(p)>=2*n) change=1;
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  for(i=1;i<=n;i++) {
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    fnd_line(p,i,lbuf);
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    p1=find_word_start(lbuf); if(p1>lbuf) ovlstrcpy(lbuf,p1);
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    strip_enclosing_par(lbuf);
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    if(lbuf[0]==0) continue;
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    /* Uniformize column separator to comma */
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    if(change) words2items(lbuf);
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    rawmath(lbuf);
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    if(i==1) {
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      ovlstrcpy(obuf,lbuf);
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      c=itemnum(lbuf);
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    }
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    else {
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      if(strlen(obuf)+strlen(lbuf)>=MAX_LINELEN-1)
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        user_error("cmd_output_too_long");
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      if(c!=itemnum(lbuf)) {
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        force_setvar("wims_warn_rawmatrix","inconsistent_columns");
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        return;
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      }
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      snprintf(obuf+strlen(obuf),sizeof(obuf)-strlen(obuf),
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               "\n%s",lbuf);
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    }
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  }
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  ovlstrcpy(p,obuf);
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}