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- /* ugtlin.c
- Read a line with backslash continuations.
-
- Copyright (C) 1992 Ian Lance Taylor
-
- This file is part of the Taylor UUCP uuconf library.
-
- This library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Library General Public License
- as published by the Free Software Foundation; either version 2 of
- the License, or (at your option) any later version.
-
- This library is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Library General Public License for more details.
-
- You should have received a copy of the GNU Library General Public
- License along with this library; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
-
- The author of the program may be contacted at ian@airs.com or
- c/o Cygnus Support, 48 Grove Street, Somerville, MA 02144.
- */
-
- #include "uucnfi.h"
-
- #if USE_RCS_ID
- const char _uuconf_ugtlin_rcsid[] = "$Id: ugtlin.c,v 1.6 1995/06/21 19:25:06 ian Rel $";
- #endif
-
- /* Read a line from a file with backslash continuations. This updates
- the qglobal->ilineno count for each additional line it reads. */
-
- int
- _uuconf_getline (qglobal, pzline, pcline, e)
- struct sglobal *qglobal;
- char **pzline;
- size_t *pcline;
- FILE *e;
- {
- int ctot;
- char *zline;
- size_t cline;
-
- ctot = -1;
-
- zline = NULL;
- cline = 0;
-
- while (TRUE)
- {
- int cchars;
-
- if (ctot < 0)
- cchars = getline (pzline, pcline, e);
- else
- cchars = getline (&zline, &cline, e);
- if (cchars < 0)
- {
- if (zline != NULL)
- free ((pointer) zline);
- if (ctot >= 0)
- return ctot;
- else
- return cchars;
- }
-
- if (ctot < 0)
- ctot = cchars;
- else
- {
- if (*pcline <= ctot + cchars)
- {
- char *znew;
-
- if (*pcline > 0)
- znew = (char *) realloc ((pointer) *pzline,
- (size_t) (ctot + cchars + 1));
- else
- znew = (char *) malloc ((size_t) (ctot + cchars + 1));
- if (znew == NULL)
- {
- free ((pointer) zline);
- return -1;
- }
- *pzline = znew;
- *pcline = ctot + cchars + 1;
- }
-
- memcpy ((pointer) ((*pzline) + ctot), (pointer) zline,
- (size_t) (cchars + 1));
- ctot += cchars;
- }
-
- if (ctot < 2
- || (*pzline)[ctot - 1] != '\n'
- || (*pzline)[ctot - 2] != '\\')
- {
- if (zline != NULL)
- free ((pointer) zline);
- return ctot;
- }
-
- ++qglobal->ilineno;
-
- ctot -= 2;
- (*pzline)[ctot] = '\0';
- }
- }
-