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

1.1     ! root        1: /* cmdlin.c
        !             2:    Parse a command line.
        !             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_cmdlin_rcsid[] = "$Id: cmdlin.c,v 1.1 93/07/30 08:07:05 bin Exp Locker: bin $";
        !            30: #endif
        !            31: 
        !            32: #include <errno.h>
        !            33: #include <ctype.h>
        !            34: 
        !            35: /* Parse a command line into fields and process it via a command
        !            36:    table.  The command table functions may keep the memory allocated
        !            37:    for the line, but they may not keep the memory allocated for the
        !            38:    argv list.  This function strips # comments.  */
        !            39: 
        !            40: #define CSTACK (16)
        !            41: 
        !            42: int
        !            43: uuconf_cmd_line (pglobal, zline, qtab, pinfo, pfiunknown, iflags, pblock)
        !            44:      pointer pglobal;
        !            45:      char *zline;
        !            46:      const struct uuconf_cmdtab *qtab;
        !            47:      pointer pinfo;
        !            48:      int (*pfiunknown) P((pointer, int, char **, pointer, pointer));
        !            49:      int iflags;
        !            50:      pointer pblock;
        !            51: {
        !            52:   struct sglobal *qglobal = (struct sglobal *) pglobal;
        !            53:   char *z;
        !            54:   int cargs;
        !            55:   char *azargs[CSTACK];
        !            56:   char **pzargs;
        !            57:   int iret;
        !            58: 
        !            59:   /* Any # not preceeded by a backslash starts a comment.  */
        !            60:   z = zline;
        !            61:   while ((z = strchr (z, '#')) != NULL)
        !            62:     {
        !            63:       if (z == zline || *(z - 1) != '\\')
        !            64:        {
        !            65:          *z = '\0';
        !            66:          break;
        !            67:        }
        !            68:       /* Remove the backslash.  */
        !            69:       while ((*(z - 1) = *z) != '\0')
        !            70:        ++z;
        !            71:     }
        !            72: 
        !            73:   /* Parse the first CSTACK arguments by hand to avoid malloc.  */
        !            74: 
        !            75:   z = zline;
        !            76:   cargs = 0;
        !            77:   pzargs = azargs;
        !            78:   while (TRUE)
        !            79:     {
        !            80:       while (*z != '\0' && isspace (BUCHAR (*z)))
        !            81:        ++z;
        !            82: 
        !            83:       if (*z == '\0')
        !            84:        break;
        !            85: 
        !            86:       if (cargs >= CSTACK)
        !            87:        {
        !            88:          char **pzsplit;
        !            89:          size_t csplit;
        !            90:          int cmore;
        !            91: 
        !            92:          pzsplit = NULL;
        !            93:          csplit = 0;
        !            94:          cmore = _uuconf_istrsplit (z, '\0', &pzsplit, &csplit);
        !            95:          if (cmore < 0)
        !            96:            {
        !            97:              qglobal->ierrno = errno;
        !            98:              return UUCONF_MALLOC_FAILED | UUCONF_ERROR_ERRNO;
        !            99:            }
        !           100: 
        !           101:          pzargs = (char **) malloc ((cmore + CSTACK) * sizeof (char *));
        !           102:          if (pzargs == NULL)
        !           103:            {
        !           104:              qglobal->ierrno = errno;
        !           105:              free ((pointer) pzsplit);
        !           106:              return UUCONF_MALLOC_FAILED | UUCONF_ERROR_ERRNO;
        !           107:            }
        !           108: 
        !           109:          memcpy ((pointer) pzargs, (pointer) azargs,
        !           110:                  CSTACK * sizeof (char *));
        !           111:          memcpy ((pointer) (pzargs + CSTACK), (pointer) pzsplit,
        !           112:                  cmore * sizeof (char *));
        !           113:          cargs = cmore + CSTACK;
        !           114: 
        !           115:          free ((pointer) pzsplit);
        !           116: 
        !           117:          break;
        !           118:        }
        !           119: 
        !           120:       azargs[cargs] = z;
        !           121:       ++cargs;
        !           122: 
        !           123:       while (*z != '\0' && ! isspace (BUCHAR (*z)))
        !           124:        z++;
        !           125: 
        !           126:       if (*z == '\0')
        !           127:        break;
        !           128: 
        !           129:       *z++ = '\0';
        !           130:     }
        !           131: 
        !           132:   if (cargs <= 0)
        !           133:     return UUCONF_CMDTABRET_CONTINUE;
        !           134: 
        !           135:   iret = uuconf_cmd_args (pglobal, cargs, pzargs, qtab, pinfo, pfiunknown,
        !           136:                          iflags, pblock);
        !           137: 
        !           138:   if (pzargs != azargs)
        !           139:     free ((pointer) pzargs);
        !           140: 
        !           141:   return iret;
        !           142: }

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