* '"a b"' -> 'a b'
* - escaped quotes must be converted back to '"'
* '\"' -> '"'
- * - an odd number of '\'s followed by '"' correspond to half that number
- * of '\' followed by a '"' (extension of the above)
- * '\\\"' -> '\"'
- * '\\\\\"' -> '\\"'
- * - an even number of '\'s followed by a '"' correspond to half that number
- * of '\', plus a regular quote serving as an argument delimiter (which
- * means it does not appear in the result)
- * 'a\\"b c"' -> 'a\b c'
- * 'a\\\\"b c"' -> 'a\\b c'
- * - '\' that are not followed by a '"' are copied literally
+ * - consecutive backslashes preceding a quote see their number halved with
+ * the remainder escaping the quote:
+ * 2n backslashes + quote -> n backslashes + quote as an argument delimiter
+ * 2n+1 backslashes + quote -> n backslashes + literal quote
+ * - backslashes that are not followed by a quote are copied literally:
* 'a\b' -> 'a\b'
* 'a\\b' -> 'a\\b'
- *
- * Note:
- * '\t' == 0x0009
- * ' ' == 0x0020
- * '"' == 0x0022
- * '\\' == 0x005c
+ * - in quoted strings, consecutive quotes see their number divided by three
+ * with the remainder modulo 3 deciding whether to close the string or not.
+ * Note that the opening quote must be counted in the consecutive quotes,
+ * that's the (1+) below:
+ * (1+) 3n quotes -> n quotes
+ * (1+) 3n+1 quotes -> n quotes plus closes the quoted string
+ * (1+) 3n+2 quotes -> n+1 quotes plus closes the quoted string
+ * - in unquoted strings, the first quote opens the quoted string and the
+ * remaining consecutive quotes follow the above rule.
*/
LPWSTR* WINAPI CommandLineToArgvW(LPCWSTR lpCmdline, int* numargs)
{
DWORD argc;
LPWSTR *argv;
- LPCWSTR cs;
- LPWSTR arg,s,d;
+ LPCWSTR s;
+ LPWSTR d;
LPWSTR cmdline;
- int in_quotes,bcount;
+ int qcount,bcount;
if(!numargs)
{
return argv;
}
- /* to get a writable copy */
- argc=0;
- bcount=0;
- in_quotes=0;
- cs=lpCmdline;
- while (1)
+ /* --- First count the arguments */
+ argc=1;
+ s=lpCmdline;
+ /* The first argument, the executable path, follows special rules */
+ if (*s=='"')
{
- if (*cs==0 || ((*cs==0x0009 || *cs==0x0020) && !in_quotes))
- {
- /* space */
- argc++;
- /* skip the remaining spaces */
- while (*cs==0x0009 || *cs==0x0020)
- {
- cs++;
- }
- if (*cs==0)
+ /* The executable path ends at the next quote, no matter what */
+ s++;
+ while (*s)
+ if (*s++=='"')
break;
+ }
+ else
+ {
+ /* The executable path ends at the next space, no matter what */
+ while (*s && *s!=' ' && *s!='\t')
+ s++;
+ }
+ /* skip to the first argument, if any */
+ while (*s==' ' || *s=='\t')
+ s++;
+ if (*s)
+ argc++;
+
+ /* Analyze the remaining arguments */
+ qcount=bcount=0;
+ while (*s)
+ {
+ if ((*s==' ' || *s=='\t') && qcount==0)
+ {
+ /* skip to the next argument and count it if any */
+ while (*s==' ' || *s=='\t')
+ s++;
+ if (*s)
+ argc++;
bcount=0;
- continue;
}
- else if (*cs==0x005c)
+ else if (*s=='\\')
{
/* '\', count them */
bcount++;
+ s++;
}
- else if ((*cs==0x0022) && ((bcount & 1)==0))
+ else if (*s=='"')
{
- /* unescaped '"' */
- in_quotes=!in_quotes;
+ /* '"' */
+ if ((bcount & 1)==0)
+ qcount++; /* unescaped '"' */
+ s++;
bcount=0;
+ /* consecutive quotes, see comment in copying code below */
+ while (*s=='"')
+ {
+ qcount++;
+ s++;
+ }
+ qcount=qcount % 3;
+ if (qcount==2)
+ qcount=0;
}
else
{
/* a regular character */
bcount=0;
+ s++;
}
- cs++;
}
- /* Allocate in a single lump, the string array, and the strings that go with it.
- * This way the caller can make a single GlobalFree call to free both, as per MSDN.
+
+ /* Allocate in a single lump, the string array, and the strings that go
+ * with it. This way the caller can make a single LocalFree() call to free
+ * both, as per MSDN.
*/
- argv=(LPWSTR *)LocalAlloc(LMEM_FIXED, argc*sizeof(LPWSTR)+(wcslen(lpCmdline)+1)*sizeof(WCHAR));
+ argv=(LPWSTR *)LocalAlloc(LMEM_FIXED, argc*sizeof(LPWSTR)+(strlenW(lpCmdline)+1)*sizeof(WCHAR));
if (!argv)
return NULL;
cmdline=(LPWSTR)(argv+argc);
- wcscpy(cmdline, lpCmdline);
+ strcpyW(cmdline, lpCmdline);
+
+ /* --- Then split and copy the arguments */
+ argv[0]=d=cmdline;
+ argc=1;
+ /* The first argument, the executable path, follows special rules */
+ if (*d=='"')
+ {
+ /* The executable path ends at the next quote, no matter what */
+ s=d+1;
+ while (*s)
+ {
+ if (*s=='"')
+ {
+ s++;
+ break;
+ }
+ *d++=*s++;
+ }
+ }
+ else
+ {
+ /* The executable path ends at the next space, no matter what */
+ while (*d && *d!=' ' && *d!='\t')
+ d++;
+ s=d;
+ if (*s)
+ s++;
+ }
+ /* close the executable path */
+ *d++=0;
+ /* skip to the first argument and initialize it if any */
+ while (*s==' ' || *s=='\t')
+ s++;
+ if (!*s)
+ {
+ /* There are no parameters so we are all done */
+ *numargs=argc;
+ return argv;
+ }
- argc=0;
- bcount=0;
- in_quotes=0;
- arg=d=s=cmdline;
+ /* Split and copy the remaining arguments */
+ argv[argc++]=d;
+ qcount=bcount=0;
while (*s)
{
- if ((*s==0x0009 || *s==0x0020) && !in_quotes)
+ if ((*s==' ' || *s=='\t') && qcount==0)
{
- /* Close the argument and copy it */
- *d=0;
- argv[argc++]=arg;
+ /* close the argument */
+ *d++=0;
+ bcount=0;
- /* skip the remaining spaces */
+ /* skip to the next one and initialize it if any */
do {
s++;
- } while (*s==0x0009 || *s==0x0020);
-
- /* Start with a new argument */
- arg=d=s;
- bcount=0;
+ } while (*s==' ' || *s=='\t');
+ if (*s)
+ argv[argc++]=d;
}
- else if (*s==0x005c)
+ else if (*s=='\\')
{
- /* '\\' */
*d++=*s++;
bcount++;
}
- else if (*s==0x0022)
+ else if (*s=='"')
{
- /* '"' */
if ((bcount & 1)==0)
{
/* Preceded by an even number of '\', this is half that
* number of '\', plus a quote which we erase.
*/
d-=bcount/2;
- in_quotes=!in_quotes;
- s++;
+ qcount++;
}
else
{
*/
d=d-bcount/2-1;
*d++='"';
- s++;
}
+ s++;
bcount=0;
+ /* Now count the number of consecutive quotes. Note that qcount
+ * already takes into account the opening quote if any, as well as
+ * the quote that lead us here.
+ */
+ while (*s=='"')
+ {
+ if (++qcount==3)
+ {
+ *d++='"';
+ qcount=0;
+ }
+ s++;
+ }
+ if (qcount==2)
+ qcount=0;
}
else
{
bcount=0;
}
}
- if (*arg)
- {
- *d='\0';
- argv[argc++]=arg;
- }
+ *d='\0';
*numargs=argc;
return argv;
BEGIN_OBJECT_MAP(ObjectMap)
-OBJECT_ENTRY(CLSID_ShellFSFolder, CFSFolder)
-OBJECT_ENTRY(CLSID_MyComputer, CDrivesFolder)
-OBJECT_ENTRY(CLSID_ShellDesktop, CDesktopFolder)
-OBJECT_ENTRY(CLSID_ShellItem, CShellItem)
-OBJECT_ENTRY(CLSID_ShellLink, CShellLink)
-OBJECT_ENTRY(CLSID_DragDropHelper, CDropTargetHelper)
-OBJECT_ENTRY(CLSID_ControlPanel, CControlPanelFolder)
-OBJECT_ENTRY(CLSID_AutoComplete, CAutoComplete)
-OBJECT_ENTRY(CLSID_MyDocuments, CMyDocsFolder)
-OBJECT_ENTRY(CLSID_NetworkPlaces, CNetFolder)
-OBJECT_ENTRY(CLSID_FontsFolderShortcut, CFontsFolder)
-OBJECT_ENTRY(CLSID_Printers, CPrinterFolder)
-OBJECT_ENTRY(CLSID_AdminFolderShortcut, CAdminToolsFolder)
-OBJECT_ENTRY(CLSID_RecycleBin, CRecycleBin)
-OBJECT_ENTRY(CLSID_OpenWithMenu, COpenWithMenu)
-OBJECT_ENTRY(CLSID_NewMenu, CNewMenu)
-OBJECT_ENTRY(CLSID_StartMenu, CStartMenu)
-OBJECT_ENTRY(CLSID_MenuBandSite, CMenuBandSite)
+ OBJECT_ENTRY(CLSID_ShellFSFolder, CFSFolder)
+ OBJECT_ENTRY(CLSID_MyComputer, CDrivesFolder)
+ OBJECT_ENTRY(CLSID_ShellDesktop, CDesktopFolder)
+ OBJECT_ENTRY(CLSID_ShellItem, CShellItem)
+ OBJECT_ENTRY(CLSID_ShellLink, CShellLink)
+ OBJECT_ENTRY(CLSID_DragDropHelper, CDropTargetHelper)
+ OBJECT_ENTRY(CLSID_ControlPanel, CControlPanelFolder)
+ OBJECT_ENTRY(CLSID_AutoComplete, CAutoComplete)
+ OBJECT_ENTRY(CLSID_MyDocuments, CMyDocsFolder)
+ OBJECT_ENTRY(CLSID_NetworkPlaces, CNetFolder)
+ OBJECT_ENTRY(CLSID_FontsFolderShortcut, CFontsFolder)
+ OBJECT_ENTRY(CLSID_Printers, CPrinterFolder)
+ OBJECT_ENTRY(CLSID_AdminFolderShortcut, CAdminToolsFolder)
+ OBJECT_ENTRY(CLSID_RecycleBin, CRecycleBin)
+ OBJECT_ENTRY(CLSID_OpenWithMenu, COpenWithMenu)
+ OBJECT_ENTRY(CLSID_NewMenu, CNewMenu)
+ OBJECT_ENTRY(CLSID_StartMenu, CStartMenu)
+ OBJECT_ENTRY(CLSID_MenuBandSite, CMenuBandSite)
+ OBJECT_ENTRY(CLSID_MenuBand, CMenuBand)
END_OBJECT_MAP()
CShell32Module gModule;
projects / reactos.git / blobdiff