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shell32: Simplify CommandLineToArgvW() a bit.

This commit is contained in:
Francois Gouget 2012-10-09 00:13:35 +02:00 committed by Alexandre Julliard
parent 1e3834aa14
commit 35004f84a2
1 changed files with 33 additions and 47 deletions
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76
dlls/shell32/shell32_main.c
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@ -76,19 +76,13 @@ WINE_DEFAULT_DEBUG_CHANNEL(shell);
* - '\' that are not followed by a '"' are copied literally
* 'a\b' -> 'a\b'
* 'a\\b' -> 'a\\b'
*
* Note:
* '\t' == 0x0009
* ' ' == 0x0020
* '"' == 0x0022
* '\\' == 0x005c
*/
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;
@ -124,32 +118,29 @@ LPWSTR* WINAPI CommandLineToArgvW(LPCWSTR lpCmdline, int* numargs)
return argv;
}
/* to get a writable copy */
argc=0;
/* --- First count the arguments */
argc=1;
bcount=0;
in_quotes=0;
cs=lpCmdline;
while (1)
s=lpCmdline;
while (*s)
{
if (*cs==0 || ((*cs==0x0009 || *cs==0x0020) && !in_quotes))
if (((*s==' ' || *s=='\t') && !in_quotes))
{
/* space */
/* skip to the next argument and count it if any */
while (*s==' ' || *s=='\t')
s++;
if (*s)
argc++;
/* skip the remaining spaces */
while (*cs==0x0009 || *cs==0x0020) {
cs++;
}
if (*cs==0)
break;
bcount=0;
continue;
}
else if (*cs==0x005c)
else if (*s=='\\')
{
/* '\', count them */
bcount++;
}
else if ((*cs==0x0022) && ((bcount & 1)==0))
else if ((*s=='"') && ((bcount & 1)==0))
{
/* unescaped '"' */
in_quotes=!in_quotes;
@ -160,10 +151,12 @@ LPWSTR* WINAPI CommandLineToArgvW(LPCWSTR lpCmdline, int* numargs)
/* a regular character */
bcount=0;
}
cs++;
s++;
}
/* 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=LocalAlloc(LMEM_FIXED, argc*sizeof(LPWSTR)+(strlenW(lpCmdline)+1)*sizeof(WCHAR));
if (!argv)
@ -171,36 +164,33 @@ LPWSTR* WINAPI CommandLineToArgvW(LPCWSTR lpCmdline, int* numargs)
cmdline=(LPWSTR)(argv+argc);
strcpyW(cmdline, lpCmdline);
argc=0;
/* --- Then split and copy the arguments */
argc=1;
bcount=0;
in_quotes=0;
arg=d=s=cmdline;
s=argv[0]=d=cmdline;
while (*s)
{
if ((*s==0x0009 || *s==0x0020) && !in_quotes)
if ((*s==' ' || *s=='\t') && !in_quotes)
{
/* 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
@ -228,11 +218,7 @@ LPWSTR* WINAPI CommandLineToArgvW(LPCWSTR lpCmdline, int* numargs)
bcount=0;
}
}
if (*arg)
{
*d='\0';
argv[argc++]=arg;
}
*numargs=argc;
return argv;