470 lines
13 KiB
C
470 lines
13 KiB
C
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/***
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*wild.c - wildcard expander
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*
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* Copyright (c) 1985-2001, Microsoft Corporation. All rights reserved.
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*
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*Purpose:
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* expands wildcards in argv
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*
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* handles '*' (none or more of any char) and '?' (exactly one char)
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*
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*Revision History:
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* 05-21-84 RN initial version
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* 06-07-85 TDC since dos accepts forward slash, added
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* code to accept forward slash in a manner consistent
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* with reverse slash.
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* 09-20-86 SKS Modified for OS/2
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* All argument strings to this function have a
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* leading flag character. If the flag is a quote,
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* that argument string was quoted on the command
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* line and should have not wildcard expansion. In all
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* cases the leading flag character is removed from
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* the string.
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* 11-11-86 JMB Added Kanji support under KANJI switch.
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* 09-21-88 WAJ initial 386 version
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* 04-09-90 GJF Added #include <cruntime.h> and removed #include
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* <register.h>. Made calling types explicit (_CALLTYPE1
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* or _CALLTYPE4). Also, fixed the copyright.
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* 04-10-90 GJF Added #include <internal.h> and fixed compiler warnings
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* (-W3).
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* 07-03-90 SBM Compiles cleanly with -W3 under KANJI, removed
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* redundant includes, removed #include <internal.h>
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* to keep wild.c free of private stuff, should we
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* decide to release it
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* 09-07-90 SBM put #include <internal.h> back in, reason for
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* removing it discovered to be horribly bogus
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* 10-08-90 GJF New-style function declarators.
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* 01-18-91 GJF ANSI naming.
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* 04-06-93 SKS Replace _CRTAPI* with __cdecl
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* Remove explicit declarations of __argc & __argv.
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* They are declared in <stdlib.h>
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* 05-05-93 SKS Filename sorting should be case-insensitive
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* 06-09-93 KRS Update _MBCS support.
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* 10-20-93 GJF Merged in NT version.
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* 11-23-93 CFW Wide char enable, grab _find from stdargv.c.
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* 12-07-93 CFW Change _TCHAR to _TSCHAR.
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* 04-22-94 GJF Made defintions of arghead, argend, _WildFindHandle
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* and findbuf conditional on DLL_FOR_WIN32S.
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* 01-10-95 CFW Debug CRT allocs.
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* 01-18-95 GJF Must replace _tcsdup with _malloc_crt/_tcscpy for
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* _DEBUG build.
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* 02-04-98 GJF Changes for Win64: use intptr_t and ptrdiff_t casts
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* where appropriate.
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* 02-19-01 GB added check for return value of malloc in find.
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*
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*******************************************************************************/
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#include <cruntime.h>
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#include <oscalls.h>
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#include <stddef.h>
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#include <stdlib.h>
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#include <string.h>
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#include <ctype.h>
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#include <msdos.h>
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#include <internal.h>
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#include <tchar.h>
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#ifdef _MBCS
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#include <mbdata.h>
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#include <mbstring.h>
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#endif
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#include <dbgint.h>
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/*
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** these are the data structures
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**
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** __argv
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** ------- ------
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** | |---->| |---->"arg0"
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** ------- ------
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** | |---->"arg1"
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** ------
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** ....
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** ------
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** | |---->"argn"
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** ------
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** |NULL|
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** ------
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** argend
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** -------
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** ------- | |
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** | | __argc -------
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** ------- |
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** |
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** arghead V
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** ------ --------- ----------
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** | |---->| | |----> .... ---->| |NULL|
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** ------ --------- ----------
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** | |
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** V V
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** "narg0" "nargn"
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*/
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#define ERRORHANDLE ((HANDLE)(intptr_t)(-1))
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/* local function tchars */
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#ifdef WPRFLAG
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#define tmatch wmatch
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#define tadd wadd
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#define tsort wsort
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#define tfind wfind
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#else
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#define tmatch match
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#define tadd add
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#define tsort sort
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#define tfind find
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#endif
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#define SLASHCHAR _T('\\')
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#define FWDSLASHCHAR _T('/')
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#define COLONCHAR _T(':')
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#define QUOTECHAR _T('"')
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#define SLASH _T("\\")
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#define FWDSLASH _T("/")
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#define STAR _T("*.*")
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#define DOT _T(".")
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#define DOTDOT _T("..")
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#define WILDSTRING _T("*?")
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struct argnode {
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_TSCHAR *argptr;
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struct argnode *nextnode;
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};
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static struct argnode *arghead;
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static struct argnode *argend;
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#ifdef WPRFLAG
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static int __cdecl wmatch(wchar_t *, wchar_t *);
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static int __cdecl wadd(wchar_t *);
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static void __cdecl wsort(struct argnode *);
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static wchar_t * __cdecl wfind (wchar_t *pattern);
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#else
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static int __cdecl match(char *, char *);
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static int __cdecl add(char *);
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static void __cdecl sort(struct argnode *);
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static char * __cdecl find (char *pattern);
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#endif
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/***
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*int _cwild() - wildcard expander
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*
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*Purpose:
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* expands wildcard in file specs in argv
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*
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* handles '*' (none or more of any char), '?' (exactly one char), and
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* '[string]' (chars which match string chars or between n1 and n2
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* if 'n1-n2' in string inclusive)
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*
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*Entry:
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*
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*Exit:
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* returns 0 if successful, -1 if any malloc() calls fail
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* if problems with malloc, the old argc and argv are not touched
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*
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*Exceptions:
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*
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*******************************************************************************/
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#ifdef WPRFLAG
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int __cdecl _wcwild (
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#else
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int __cdecl _cwild (
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#endif
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void
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)
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{
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#ifdef WPRFLAG
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REG1 wchar_t **argv = __wargv;
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#else
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REG1 char **argv = __argv;
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#endif
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REG2 struct argnode *nodeptr;
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REG3 int argc;
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REG4 _TSCHAR **tmp;
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_TSCHAR *wchar;
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arghead = argend = NULL;
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#ifdef WPRFLAG
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for (argv = __wargv; *argv; argv++) /* for each arg... */
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#else
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for (argv = __argv; *argv; argv++) /* for each arg... */
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#endif
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if ( *(*argv)++ == QUOTECHAR )
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/* strip leading quote from quoted arg */
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{
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if (tadd(*argv))
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return(-1);
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}
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else if (wchar = _tcspbrk( *argv, WILDSTRING )) {
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/* attempt to expand arg with wildcard */
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if (tmatch( *argv, wchar ))
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return(-1);
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}
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else if (tadd( *argv )) /* normal arg, just add */
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return(-1);
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/* count the args */
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for (argc = 0, nodeptr = arghead; nodeptr;
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nodeptr = nodeptr->nextnode, argc++)
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;
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/* try to get new arg vector */
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if (!(tmp = (_TSCHAR **)_malloc_crt(sizeof(_TSCHAR *)*(argc+1))))
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return(-1);
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/* the new arg vector... */
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#ifdef WPRFLAG
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__wargv = tmp;
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#else
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__argv = tmp;
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#endif
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/* the new arg count... */
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__argc = argc;
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/* install the new args */
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for (nodeptr = arghead; nodeptr; nodeptr = nodeptr->nextnode)
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*tmp++ = nodeptr->argptr;
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/* the terminal NULL */
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*tmp = NULL;
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/* free up local data */
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for (nodeptr = arghead; nodeptr; nodeptr = arghead) {
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arghead = arghead->nextnode;
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_free_crt(nodeptr);
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}
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/* return success */
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return(0);
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}
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/***
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*match(arg, ptr) - [STATIC]
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*
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*Purpose:
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*
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*Entry:
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*
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*Exit:
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*
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*Exceptions:
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*
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*******************************************************************************/
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#ifdef WPRFLAG
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static int __cdecl wmatch (
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#else
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static int __cdecl match (
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#endif
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REG4 _TSCHAR *arg,
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REG1 _TSCHAR *ptr
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)
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{
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REG2 _TSCHAR *new;
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REG3 int length = 0;
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_TSCHAR *all;
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REG5 struct argnode *first;
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REG6 int gotone = 0;
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while (ptr != arg && *ptr != SLASHCHAR && *ptr != FWDSLASHCHAR
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&& *ptr != COLONCHAR) {
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/* find first slash or ':' before wildcard */
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#ifdef _MBCS
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if (--ptr > arg)
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ptr = _mbsdec(arg,ptr+1);
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#else
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ptr--;
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#endif
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}
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if (*ptr == COLONCHAR && ptr != arg+1) /* weird name, just add it as is */
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return(tadd(arg));
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if (*ptr == SLASHCHAR || *ptr == FWDSLASHCHAR
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|| *ptr == COLONCHAR) /* pathname */
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length = (int)(ptrdiff_t)(ptr - arg + 1); /* length of dir prefix */
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if (new = tfind(arg)) { /* get the first file name */
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first = argend;
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do { /* got a file name */
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if (_tcscmp(new, DOT) && _tcscmp(new, DOTDOT)) {
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if (*ptr != SLASHCHAR && *ptr != COLONCHAR
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&& *ptr != FWDSLASHCHAR ) {
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/* current directory; don't need path */
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#ifdef _DEBUG
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if (!(arg=_malloc_crt((_tcslen(new)+1)*sizeof(_TSCHAR)))
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|| tadd(_tcscpy(arg,new)))
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#else /* ndef _DEBUG */
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if (!(arg = _tcsdup(new)) || tadd(arg))
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#endif /* _DEBUG */
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return(-1);
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}
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else /* add full pathname */
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if (!(all=_malloc_crt((length+_tcslen(new)+1)*sizeof(_TSCHAR)))
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|| tadd(_tcscpy(_tcsncpy(all,arg,length)+length,new)
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- length))
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return(-1);
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gotone++;
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}
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}
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while (new = tfind(NULL)); /* get following files */
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if (gotone) {
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tsort(first ? first->nextnode : arghead);
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return(0);
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}
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}
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return(tadd(arg)); /* no match */
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}
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/***
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*add(arg) - [STATIC]
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*
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*Purpose:
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*
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*Entry:
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*
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*Exit:
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*
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*Exceptions:
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*
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*******************************************************************************/
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#ifdef WPRFLAG
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static int __cdecl wadd (
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#else
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static int __cdecl add (
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#endif
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_TSCHAR *arg
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)
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{
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REG1 struct argnode *nodeptr;
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if (!(nodeptr = (struct argnode *)_malloc_crt(sizeof(struct argnode))))
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return(-1);
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nodeptr->argptr = arg;
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nodeptr->nextnode = NULL;
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if (arghead)
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argend->nextnode = nodeptr;
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else
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arghead = nodeptr;
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argend = nodeptr;
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return(0);
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}
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/***
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*sort(first) - [STATIC]
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*
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*Purpose:
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*
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*Entry:
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*
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*Exit:
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*
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*Exceptions:
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*
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*******************************************************************************/
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#ifdef WPRFLAG
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static void __cdecl wsort (
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#else
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static void __cdecl sort (
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#endif
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REG2 struct argnode *first
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)
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{
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REG1 struct argnode *nodeptr;
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REG3 _TSCHAR *temp;
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if (first) /* something to sort */
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while (nodeptr = first->nextnode) {
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do {
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#ifdef _POSIX_
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if (_tcscmp(nodeptr->argptr, first->argptr) < 0) {
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#else
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if (_tcsicmp(nodeptr->argptr, first->argptr) < 0) {
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#endif /* _POSIX_ */
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temp = first->argptr;
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|
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first->argptr = nodeptr->argptr;
|
||
|
|
nodeptr->argptr = temp;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
while (nodeptr = nodeptr->nextnode);
|
||
|
|
|
||
|
|
first = first->nextnode;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/***
|
||
|
|
*find(pattern) - find matching filename
|
||
|
|
*
|
||
|
|
*Purpose:
|
||
|
|
* if argument is non-null, do a DOSFINDFIRST on that pattern
|
||
|
|
* otherwise do a DOSFINDNEXT call. Return matching filename
|
||
|
|
* or NULL if no more matches.
|
||
|
|
*
|
||
|
|
*Entry:
|
||
|
|
* pattern = pointer to pattern or NULL
|
||
|
|
* (NULL means find next matching filename)
|
||
|
|
*
|
||
|
|
*Exit:
|
||
|
|
* returns pointer to matching file name
|
||
|
|
* or NULL if no more matches.
|
||
|
|
*
|
||
|
|
*Exceptions:
|
||
|
|
*
|
||
|
|
*******************************************************************************/
|
||
|
|
|
||
|
|
#ifdef WPRFLAG
|
||
|
|
static wchar_t * __cdecl wfind (
|
||
|
|
#else
|
||
|
|
static char * __cdecl find (
|
||
|
|
#endif /* WPRFLAG */
|
||
|
|
_TSCHAR *pattern
|
||
|
|
)
|
||
|
|
{
|
||
|
|
_TSCHAR *retval;
|
||
|
|
|
||
|
|
static HANDLE _WildFindHandle;
|
||
|
|
static LPWIN32_FIND_DATA findbuf;
|
||
|
|
|
||
|
|
if (pattern) {
|
||
|
|
if (findbuf == NULL)
|
||
|
|
if ((findbuf = (LPWIN32_FIND_DATA)_malloc_crt(MAX_PATH + sizeof(*findbuf))) == NULL)
|
||
|
|
return NULL;
|
||
|
|
|
||
|
|
if (_WildFindHandle != NULL) {
|
||
|
|
(void)FindClose( _WildFindHandle );
|
||
|
|
_WildFindHandle = NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
_WildFindHandle = FindFirstFile( (LPTSTR)pattern, findbuf );
|
||
|
|
if (_WildFindHandle == ERRORHANDLE)
|
||
|
|
return NULL;
|
||
|
|
}
|
||
|
|
else if (!FindNextFile( _WildFindHandle, findbuf )) {
|
||
|
|
(void)FindClose( _WildFindHandle );
|
||
|
|
_WildFindHandle = NULL;
|
||
|
|
return NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
retval = findbuf->cFileName;
|
||
|
|
|
||
|
|
return retval;
|
||
|
|
}
|