include/gmxcpp.h

   1
   2 /*
   3  *
   4  *                This source code is part of
   5  *
   6  *                 G   R   O   M   A   C   S
   7  *
   8  *          GROningen MAchine for Chemical Simulations
   9  *
  10  * Written by David van der Spoel, Erik Lindahl, Berk Hess, and others.
  11  * Copyright (c) 1991-2000, University of Groningen, The Netherlands.
  12  * Copyright (c) 2001-2008, The GROMACS development team,
  13  * check out http://www.gromacs.org for more information.
  14
  15  * This program is free software; you can redistribute it and/or
  16  * modify it under the terms of the GNU General Public License
  17  * as published by the Free Software Foundation; either version 2
  18  * of the License, or (at your option) any later version.
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  30  * For more info, check our website at http://www.gromacs.org
  31  *
  32  * And Hey:
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  34  */
  35
  36
  37 typedef struct gmx_cpp *gmx_cpp_t;
  38
  39         /* The possible return codes for these functions */
  40 enum { eCPP_OK, eCPP_FILE_NOT_FOUND, eCPP_EOF, eCPP_SYNTAX, eCPP_INTERRUPT,
  41        eCPP_INVALID_HANDLE,
  42        eCPP_FILE_NOT_OPEN, eCPP_UNKNOWN, eCPP_NR };
  43
  44 /* Open the file to be processed. The handle variable holds internal
  45    info for the cpp emulator. The cppopt variable (null terminated)
  46    can hold cpp options like -IXXX and -DXXX. Return integer status. */
  47 extern int cpp_open_file(const char *filenm,gmx_cpp_t *handlep, char **cppopts);
  48
  49 /* Return one whole line from the file into buf which holds at most n
  50    characters, for subsequent processing. Returns integer status. */
  51 extern int cpp_read_line(gmx_cpp_t *handlep,int n,char buf[]);
  52
  53 /* Return the file currently being read. */
  54 extern char *cpp_cur_file(const gmx_cpp_t *handlep);
  55
  56 /* Return the current line number. */
  57 extern int cpp_cur_linenr(const gmx_cpp_t *handlep);
  58
  59 /* Close the file! Return integer status. */
  60 extern int cpp_close_file(gmx_cpp_t *handlep);
  61
  62 /* Return a string containing the error message coresponding to status
  63    variable. */
  64 extern char *cpp_error(gmx_cpp_t *handlep,int status);