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Annotation of coherent/g/usr/lib/uucp/tay104/uuconf/ugtlin.c, revision 1.1

1.1     ! root        1: /* ugtlin.c
        !             2:    Read a line with backslash continuations.
        !             3: 
        !             4:    Copyright (C) 1992 Ian Lance Taylor
        !             5: 
        !             6:    This file is part of the Taylor UUCP uuconf library.
        !             7: 
        !             8:    This library is free software; you can redistribute it and/or
        !             9:    modify it under the terms of the GNU Library General Public License
        !            10:    as published by the Free Software Foundation; either version 2 of
        !            11:    the License, or (at your option) any later version.
        !            12: 
        !            13:    This library is distributed in the hope that it will be useful, but
        !            14:    WITHOUT ANY WARRANTY; without even the implied warranty of
        !            15:    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
        !            16:    Library General Public License for more details.
        !            17: 
        !            18:    You should have received a copy of the GNU Library General Public
        !            19:    License along with this library; if not, write to the Free Software
        !            20:    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
        !            21: 
        !            22:    The author of the program may be contacted at [email protected] or
        !            23:    c/o Infinity Development Systems, P.O. Box 520, Waltham, MA 02254.
        !            24:    */
        !            25: 
        !            26: #include "uucnfi.h"
        !            27: 
        !            28: #if USE_RCS_ID
        !            29: const char _uuconf_ugtlin_rcsid[] = "$Id: ugtlin.c,v 1.1 93/07/30 08:08:12 bin Exp Locker: bin $";
        !            30: #endif
        !            31: 
        !            32: /* Read a line from a file with backslash continuations.  This updates
        !            33:    the qglobal->ilineno count for each additional line it reads.  */
        !            34: 
        !            35: int
        !            36: _uuconf_getline (qglobal, pzline, pcline, e)
        !            37:      struct sglobal *qglobal;
        !            38:      char **pzline;
        !            39:      size_t *pcline;
        !            40:      FILE *e;
        !            41: {
        !            42:   int ctot;
        !            43:   char *zline;
        !            44:   size_t cline;
        !            45: 
        !            46:   ctot = -1;
        !            47: 
        !            48:   zline = NULL;
        !            49:   cline = 0;
        !            50: 
        !            51:   while (TRUE)
        !            52:     {
        !            53:       int cchars;
        !            54: 
        !            55:       if (ctot < 0)
        !            56:        cchars = getline (pzline, pcline, e);
        !            57:       else
        !            58:        cchars = getline (&zline, &cline, e);
        !            59:       if (cchars < 0)
        !            60:        {
        !            61:          if (zline != NULL)
        !            62:            free ((pointer) zline);
        !            63:          if (ctot >= 0)
        !            64:            return ctot;
        !            65:          else
        !            66:            return cchars;
        !            67:        }
        !            68: 
        !            69:       if (ctot < 0)
        !            70:        ctot = cchars;
        !            71:       else
        !            72:        {
        !            73:          if (*pcline <= ctot + cchars)
        !            74:            {
        !            75:              char *znew;
        !            76: 
        !            77:              if (*pcline > 0)
        !            78:                znew = (char *) realloc ((pointer) *pzline,
        !            79:                                         (size_t) (ctot + cchars + 1));
        !            80:              else
        !            81:                znew = (char *) malloc ((size_t) (ctot + cchars + 1));
        !            82:              if (znew == NULL)
        !            83:                {
        !            84:                  free ((pointer) zline);
        !            85:                  return -1;
        !            86:                }
        !            87:              *pzline = znew;
        !            88:              *pcline = ctot + cchars + 1;
        !            89:            }
        !            90: 
        !            91:          memcpy ((pointer) ((*pzline) + ctot), (pointer) zline,
        !            92:                  (size_t) (cchars + 1));
        !            93:          ctot += cchars;
        !            94:        }
        !            95: 
        !            96:       if (ctot < 2
        !            97:          || (*pzline)[ctot - 1] != '\n'
        !            98:          || (*pzline)[ctot - 2] != '\\')
        !            99:        {
        !           100:          if (zline != NULL)
        !           101:            free ((pointer) zline);
        !           102:          return ctot;
        !           103:        }
        !           104: 
        !           105:       ++qglobal->ilineno;
        !           106: 
        !           107:       ctot -= 2;
        !           108:       (*pzline)[ctot] = '\0';
        !           109:     }
        !           110: }

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