146 lines
3.5 KiB
C
146 lines
3.5 KiB
C
/* cmdlin.c
|
||
Parse a command line.
|
||
|
||
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_cmdlin_rcsid[] = "$Id: cmdlin.c,v 1.3 1995/08/24 05:20:57 jtc Exp $";
|
||
#endif
|
||
|
||
#include <errno.h>
|
||
#include <ctype.h>
|
||
|
||
/* Parse a command line into fields and process it via a command
|
||
table. The command table functions may keep the memory allocated
|
||
for the line, but they may not keep the memory allocated for the
|
||
argv list. This function strips # comments. */
|
||
|
||
#define CSTACK (16)
|
||
|
||
int
|
||
uuconf_cmd_line (pglobal, zline, qtab, pinfo, pfiunknown, iflags, pblock)
|
||
pointer pglobal;
|
||
char *zline;
|
||
const struct uuconf_cmdtab *qtab;
|
||
pointer pinfo;
|
||
int (*pfiunknown) P((pointer, int, char **, pointer, pointer));
|
||
int iflags;
|
||
pointer pblock;
|
||
{
|
||
struct sglobal *qglobal = (struct sglobal *) pglobal;
|
||
char *z;
|
||
int cargs;
|
||
char *azargs[CSTACK];
|
||
char **pzargs;
|
||
int iret;
|
||
|
||
if ((iflags & UUCONF_CMDTABFLAG_NOCOMMENTS) == 0)
|
||
{
|
||
/* Any # not preceeded by a backslash starts a comment. */
|
||
z = zline;
|
||
while ((z = strchr (z, '#')) != NULL)
|
||
{
|
||
if (z == zline || *(z - 1) != '\\')
|
||
{
|
||
*z = '\0';
|
||
break;
|
||
}
|
||
/* Remove the backslash. */
|
||
while ((*(z - 1) = *z) != '\0')
|
||
++z;
|
||
}
|
||
}
|
||
|
||
/* Parse the first CSTACK arguments by hand to avoid malloc. */
|
||
|
||
z = zline;
|
||
cargs = 0;
|
||
pzargs = azargs;
|
||
while (TRUE)
|
||
{
|
||
while (*z != '\0' && isspace (BUCHAR (*z)))
|
||
++z;
|
||
|
||
if (*z == '\0')
|
||
break;
|
||
|
||
if (cargs >= CSTACK)
|
||
{
|
||
char **pzsplit;
|
||
size_t csplit;
|
||
int cmore;
|
||
|
||
pzsplit = NULL;
|
||
csplit = 0;
|
||
cmore = _uuconf_istrsplit (z, '\0', &pzsplit, &csplit);
|
||
if (cmore < 0)
|
||
{
|
||
qglobal->ierrno = errno;
|
||
return UUCONF_MALLOC_FAILED | UUCONF_ERROR_ERRNO;
|
||
}
|
||
|
||
pzargs = (char **) malloc ((cmore + CSTACK) * sizeof (char *));
|
||
if (pzargs == NULL)
|
||
{
|
||
qglobal->ierrno = errno;
|
||
free ((pointer) pzsplit);
|
||
return UUCONF_MALLOC_FAILED | UUCONF_ERROR_ERRNO;
|
||
}
|
||
|
||
memcpy ((pointer) pzargs, (pointer) azargs,
|
||
CSTACK * sizeof (char *));
|
||
memcpy ((pointer) (pzargs + CSTACK), (pointer) pzsplit,
|
||
cmore * sizeof (char *));
|
||
cargs = cmore + CSTACK;
|
||
|
||
free ((pointer) pzsplit);
|
||
|
||
break;
|
||
}
|
||
|
||
azargs[cargs] = z;
|
||
++cargs;
|
||
|
||
while (*z != '\0' && ! isspace (BUCHAR (*z)))
|
||
z++;
|
||
|
||
if (*z == '\0')
|
||
break;
|
||
|
||
*z++ = '\0';
|
||
}
|
||
|
||
if (cargs <= 0)
|
||
return UUCONF_CMDTABRET_CONTINUE;
|
||
|
||
iret = uuconf_cmd_args (pglobal, cargs, pzargs, qtab, pinfo, pfiunknown,
|
||
iflags, pblock);
|
||
|
||
if (pzargs != azargs)
|
||
free ((pointer) pzargs);
|
||
|
||
return iret;
|
||
}
|