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- /***
- *stdargv.c - standard & wildcard _setargv routine
- *
- * Copyright (c) 1989-1997, Microsoft Corporation. All rights reserved.
- *
- *Purpose:
- * processes program command line, with or without wildcard expansion
- *
- *******************************************************************************/
-
-
- #include <cruntime.h>
- #include <internal.h>
- #include <rterr.h>
- #include <stdlib.h>
- #if defined (WILDCARD) || defined (_WIN32)
- #include <dos.h>
- #include <oscalls.h>
- #endif /* defined (WILDCARD) || defined (_WIN32) */
- #ifdef _MBCS
- #include <mbctype.h>
- #endif /* _MBCS */
- #include <tchar.h>
- #include <dbgint.h>
-
- #define NULCHAR _T('\0')
- #define SPACECHAR _T(' ')
- #define TABCHAR _T('\t')
- #define DQUOTECHAR _T('\"')
- #define SLASHCHAR _T('\\')
-
- /*
- * Flag to ensure multibyte ctype table is only initialized once
- */
- extern int __mbctype_initialized;
-
- #ifdef WPRFLAG
- static void __cdecl wparse_cmdline(wchar_t *cmdstart, wchar_t **argv, wchar_t *args,
- int *numargs, int *numchars);
- #else /* WPRFLAG */
- static void __cdecl parse_cmdline(char *cmdstart, char **argv, char *args,
- int *numargs, int *numchars);
- #endif /* WPRFLAG */
-
- /***
- *_setargv, __setargv - set up "argc" and "argv" for C programs
- *
- *Purpose:
- * Read the command line and create the argv array for C
- * programs.
- *
- *Entry:
- * Arguments are retrieved from the program command line,
- * pointed to by _acmdln.
- *
- *Exit:
- * "argv" points to a null-terminated list of pointers to ASCIZ
- * strings, each of which is an argument from the command line.
- * "argc" is the number of arguments. The strings are copied from
- * the environment segment into space allocated on the heap/stack.
- * The list of pointers is also located on the heap or stack.
- * _pgmptr points to the program name.
- *
- *Exceptions:
- * Terminates with out of memory error if no memory to allocate.
- *
- *******************************************************************************/
-
- #ifdef WILDCARD
-
- #ifdef WPRFLAG
- void __cdecl __wsetargv (
- #else /* WPRFLAG */
- void __cdecl __setargv (
- #endif /* WPRFLAG */
-
- #else /* WILDCARD */
-
- #ifdef WPRFLAG
- void __cdecl _wsetargv (
- #else /* WPRFLAG */
- void __cdecl _setargv (
- #endif /* WPRFLAG */
-
- #endif /* WILDCARD */
- void
- )
- {
- _TSCHAR *p;
- _TSCHAR *cmdstart; /* start of command line to parse */
- int numargs, numchars;
-
- static _TSCHAR _pgmname[ MAX_PATH ];
-
- #if !defined (CRTDLL) && defined (_MBCS)
- /* If necessary, initialize the multibyte ctype table. */
- if ( __mbctype_initialized == 0 )
- __initmbctable();
- #endif /* !defined (CRTDLL) && defined (_MBCS) */
-
- /* Get the program name pointer from Win32 Base */
-
- GetModuleFileName( NULL, _pgmname, sizeof( _pgmname ) / sizeof(_TSCHAR));
- #ifdef WPRFLAG
- _wpgmptr = _pgmname;
- #else /* WPRFLAG */
- _pgmptr = _pgmname;
- #endif /* WPRFLAG */
-
- /* if there's no command line at all (won't happen from cmd.exe, but
- possibly another program), then we use _pgmptr as the command line
- to parse, so that argv[0] is initialized to the program name */
-
- #ifdef WPRFLAG
- cmdstart = (*_wcmdln == NULCHAR) ? _wpgmptr : _wcmdln;
- #else /* WPRFLAG */
- cmdstart = (*_acmdln == NULCHAR) ? _pgmptr : _acmdln;
- #endif /* WPRFLAG */
-
- /* first find out how much space is needed to store args */
- #ifdef WPRFLAG
- wparse_cmdline(cmdstart, NULL, NULL, &numargs, &numchars);
- #else /* WPRFLAG */
- parse_cmdline(cmdstart, NULL, NULL, &numargs, &numchars);
- #endif /* WPRFLAG */
-
- /* allocate space for argv[] vector and strings */
- p = _malloc_crt(numargs * sizeof(_TSCHAR *) + numchars * sizeof(_TSCHAR));
- if (p == NULL)
- _amsg_exit(_RT_SPACEARG);
-
- /* store args and argv ptrs in just allocated block */
-
- #ifdef WPRFLAG
- wparse_cmdline(cmdstart, (wchar_t **)p, (wchar_t *)(((char *)p) + numargs * sizeof(wchar_t *)), &numargs, &numchars);
- #else /* WPRFLAG */
- parse_cmdline(cmdstart, (char **)p, p + numargs * sizeof(char *), &numargs, &numchars);
- #endif /* WPRFLAG */
-
- /* set argv and argc */
- __argc = numargs - 1;
- #ifdef WPRFLAG
- __wargv = (wchar_t **)p;
- #else /* WPRFLAG */
- __argv = (char **)p;
- #endif /* WPRFLAG */
-
- #ifdef WILDCARD
-
- /* call _[w]cwild to expand wildcards in arg vector */
- #ifdef WPRFLAG
- if (_wcwild())
- #else /* WPRFLAG */
- if (_cwild())
- #endif /* WPRFLAG */
- _amsg_exit(_RT_SPACEARG); /* out of space */
-
- #endif /* WILDCARD */
- }
-
-
- /***
- *static void parse_cmdline(cmdstart, argv, args, numargs, numchars)
- *
- *Purpose:
- * Parses the command line and sets up the argv[] array.
- * On entry, cmdstart should point to the command line,
- * argv should point to memory for the argv array, args
- * points to memory to place the text of the arguments.
- * If these are NULL, then no storing (only coujting)
- * is done. On exit, *numargs has the number of
- * arguments (plus one for a final NULL argument),
- * and *numchars has the number of bytes used in the buffer
- * pointed to by args.
- *
- *Entry:
- * _TSCHAR *cmdstart - pointer to command line of the form
- * <progname><nul><args><nul>
- * _TSCHAR **argv - where to build argv array; NULL means don't
- * build array
- * _TSCHAR *args - where to place argument text; NULL means don't
- * store text
- *
- *Exit:
- * no return value
- * int *numargs - returns number of argv entries created
- * int *numchars - number of characters used in args buffer
- *
- *Exceptions:
- *
- *******************************************************************************/
-
- #ifdef WPRFLAG
- static void __cdecl wparse_cmdline (
- #else /* WPRFLAG */
- static void __cdecl parse_cmdline (
- #endif /* WPRFLAG */
- _TSCHAR *cmdstart,
- _TSCHAR **argv,
- _TSCHAR *args,
- int *numargs,
- int *numchars
- )
- {
- _TSCHAR *p;
- _TUCHAR c;
- int inquote; /* 1 = inside quotes */
- int copychar; /* 1 = copy char to *args */
- unsigned numslash; /* num of backslashes seen */
-
- *numchars = 0;
- *numargs = 1; /* the program name at least */
-
- /* first scan the program name, copy it, and count the bytes */
- p = cmdstart;
- if (argv)
- *argv++ = args;
-
- #ifdef WILDCARD
- /* To handle later wild card expansion, we prefix each entry by
- it's first character before quote handling. This is done
- so _[w]cwild() knows whether to expand an entry or not. */
- if (args)
- *args++ = *p;
- ++*numchars;
-
- #endif /* WILDCARD */
-
- /* A quoted program name is handled here. The handling is much
- simpler than for other arguments. Basically, whatever lies
- between the leading double-quote and next one, or a terminal null
- character is simply accepted. Fancier handling is not required
- because the program name must be a legal NTFS/HPFS file name.
- Note that the double-quote characters are not copied, nor do they
- contribute to numchars. */
- if ( *p == DQUOTECHAR ) {
- /* scan from just past the first double-quote through the next
- double-quote, or up to a null, whichever comes first */
- while ( (*(++p) != DQUOTECHAR) && (*p != NULCHAR) ) {
-
- #ifdef _MBCS
- if (_ismbblead(*p)) {
- ++*numchars;
- if ( args )
- *args++ = *p++;
- }
- #endif /* _MBCS */
- ++*numchars;
- if ( args )
- *args++ = *p;
- }
- /* append the terminating null */
- ++*numchars;
- if ( args )
- *args++ = NULCHAR;
-
- /* if we stopped on a double-quote (usual case), skip over it */
- if ( *p == DQUOTECHAR )
- p++;
- }
- else {
- /* Not a quoted program name */
- do {
- ++*numchars;
- if (args)
- *args++ = *p;
-
- c = (_TUCHAR) *p++;
- #ifdef _MBCS
- if (_ismbblead(c)) {
- ++*numchars;
- if (args)
- *args++ = *p; /* copy 2nd byte too */
- p++; /* skip over trail byte */
- }
- #endif /* _MBCS */
-
- } while ( c != SPACECHAR && c != NULCHAR && c != TABCHAR );
-
- if ( c == NULCHAR ) {
- p--;
- } else {
- if (args)
- *(args-1) = NULCHAR;
- }
- }
-
- inquote = 0;
-
- /* loop on each argument */
- for(;;) {
-
- if ( *p ) {
- while (*p == SPACECHAR || *p == TABCHAR)
- ++p;
- }
-
- if (*p == NULCHAR)
- break; /* end of args */
-
- /* scan an argument */
- if (argv)
- *argv++ = args; /* store ptr to arg */
- ++*numargs;
-
- #ifdef WILDCARD
- /* To handle later wild card expansion, we prefix each entry by
- it's first character before quote handling. This is done
- so _[w]cwild() knows whether to expand an entry or not. */
- if (args)
- *args++ = *p;
- ++*numchars;
-
- #endif /* WILDCARD */
-
- /* loop through scanning one argument */
- for (;;) {
- copychar = 1;
- /* Rules: 2N backslashes + " ==> N backslashes and begin/end quote
- 2N+1 backslashes + " ==> N backslashes + literal "
- N backslashes ==> N backslashes */
- numslash = 0;
- while (*p == SLASHCHAR) {
- /* count number of backslashes for use below */
- ++p;
- ++numslash;
- }
- if (*p == DQUOTECHAR) {
- /* if 2N backslashes before, start/end quote, otherwise
- copy literally */
- if (numslash % 2 == 0) {
- if (inquote) {
- if (p[1] == DQUOTECHAR)
- p++; /* Double quote inside quoted string */
- else /* skip first quote char and copy second */
- copychar = 0;
- } else
- copychar = 0; /* don't copy quote */
-
- inquote = !inquote;
- }
- numslash /= 2; /* divide numslash by two */
- }
-
- /* copy slashes */
- while (numslash--) {
- if (args)
- *args++ = SLASHCHAR;
- ++*numchars;
- }
-
- /* if at end of arg, break loop */
- if (*p == NULCHAR || (!inquote && (*p == SPACECHAR || *p == TABCHAR)))
- break;
-
- /* copy character into argument */
- #ifdef _MBCS
- if (copychar) {
- if (args) {
- if (_ismbblead(*p)) {
- *args++ = *p++;
- ++*numchars;
- }
- *args++ = *p;
- } else {
- if (_ismbblead(*p)) {
- ++p;
- ++*numchars;
- }
- }
- ++*numchars;
- }
- ++p;
- #else /* _MBCS */
- if (copychar) {
- if (args)
- *args++ = *p;
- ++*numchars;
- }
- ++p;
- #endif /* _MBCS */
- }
-
- /* null-terminate the argument */
-
- if (args)
- *args++ = NULCHAR; /* terminate string */
- ++*numchars;
- }
-
- /* We put one last argument in -- a null ptr */
- if (argv)
- *argv++ = NULL;
- ++*numargs;
- }
-
-
-