/* Copyright (C) 2004 Free Software Foundation, Inc. Written by: Keith Marshall (keith.d.marshall@ntlworld.com) This file is part of groff. groff is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. groff 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 General Public License for more details. You should have received a copy of the GNU General Public License along with groff; see the file COPYING. If not, write to the Free Software Foundation, 51 Franklin St - Fifth Floor, Boston, MA 02110-1301, USA. */ #ifdef HAVE_CONFIG_H # include "config.h" #endif #include <stdio.h> #include <stdlib.h> #ifdef HAVE_PROCESS_H # include <process.h> #endif #if defined(__MSDOS__) \ || (defined(_WIN32) && !defined(_UWIN) && !defined(__CYGWIN__)) \ || defined(__EMX__) #define SPAWN_FUNCTION_WRAPPERS 1 /* Define the default mechanism, and messages, for error reporting * (user may substitute a preferred alternative, by defining his own * implementation of the macros REPORT_ERROR and ARGV_MALLOC_ERROR, * in the header file `nonposix.h'). */ #include "nonposix.h" #ifndef REPORT_ERROR # define REPORT_ERROR(WHY) fprintf(stderr, "%s:%s\n", program_name, WHY) #endif #ifndef ARGV_MALLOC_ERROR # define ARGV_MALLOC_ERROR "malloc: Allocation for 'argv' failed" #endif extern char *program_name; extern char *quote_arg(char *string); extern void purge_quoted_args(char **argv); int spawnvp_wrapper(int mode, char *path, char **argv) { /* Invoke the system `spawnvp' service * enclosing the passed arguments in double quotes, as required, * so that the (broken) default parsing in the MSVC runtime doesn't * split them at whitespace. */ char **quoted_argv; /* used to build a quoted local copy of `argv' */ int i; /* used as an index into `argv' or `quoted_argv' */ int status = -1; /* initialise return code, in case we fail */ int argc = 0; /* initialise argument count; may be none */ /* First count the number of arguments * which are actually present in the passed `argv'. */ if (argv) for (quoted_argv = argv; *quoted_argv; ++argc, ++quoted_argv) ; /* If we do not now have an argument count, * then we must fall through and fail. */ if (argc) { /* We do have at least one argument: * We will use a copy of the `argv', in which to do the quoting, * so we must allocate space for it. */ if ((quoted_argv = (char **)malloc(++argc * sizeof(char **))) == NULL) { /* If we didn't get enough space, * then complain, and bail out gracefully. */ REPORT_ERROR(ARGV_MALLOC_ERROR); exit(1); } /* Now copy the passed `argv' into our new vector, * quoting its contents as required. */ for (i = 0; i < argc; i++) quoted_argv[i] = quote_arg(argv[i]); /* Invoke the MSVC `spawnvp' service * passing our now appropriately quoted copy of `argv'. */ status = spawnvp(mode, path, quoted_argv); /* Clean up our memory allocations * for the quoted copy of `argv', which is no longer required. */ purge_quoted_args(quoted_argv); free(quoted_argv); } /* Finally, * return the status code returned by `spawnvp', * or a failure code if we fell through. */ return status; } #endif /* __MSDOS__ || _WIN32 */ /* spawnvp.c: end of file */