reactos/sdk/lib/crt/misc/getargs.c
2021-06-11 15:33:08 +03:00

497 lines
11 KiB
C

#include <precomp.h>
#include <stdlib.h>
#include <string.h>
extern char*_acmdln;
extern wchar_t* _wcmdln;
#undef _pgmptr
extern char*_pgmptr;
#undef _wpgmptr
extern wchar_t*_wpgmptr;
#undef _environ
extern char**_environ;
#undef __argv
#undef __argc
char**__argv = NULL;
#undef __wargv
wchar_t**__wargv = NULL;
int __argc = 0;
extern wchar_t **__winitenv;
char* strndup(char const* name, size_t len)
{
char *s = malloc(len + 1);
if (s != NULL)
{
memcpy(s, name, len);
s[len] = 0;
}
return s;
}
wchar_t* wcsndup(wchar_t* name, size_t len)
{
wchar_t *s = malloc((len + 1) * sizeof(wchar_t));
if (s != NULL)
{
memcpy(s, name, len*sizeof(wchar_t));
s[len] = 0;
}
return s;
}
#define SIZE (4096 / sizeof(char*))
int wadd(wchar_t* name)
{
wchar_t** _new;
if ((__argc % SIZE) == 0)
{
if (__wargv == NULL)
_new = malloc(sizeof(wchar_t*) * (1 + SIZE));
else
_new = realloc(__wargv, sizeof(wchar_t*) * (__argc + 1 + SIZE));
if (_new == NULL)
return -1;
__wargv = _new;
}
__wargv[__argc++] = name;
__wargv[__argc] = NULL;
return 0;
}
int wexpand(wchar_t* name, int expand_wildcards)
{
wchar_t* s;
WIN32_FIND_DATAW fd;
HANDLE hFile;
BOOLEAN first = TRUE;
wchar_t buffer[MAX_PATH];
uintptr_t pos;
if (expand_wildcards && (s = wcspbrk(name, L"*?")))
{
hFile = FindFirstFileW(name, &fd);
if (hFile != INVALID_HANDLE_VALUE)
{
while(s != name && *s != L'/' && *s != L'\\')
s--;
pos = s - name;
if (*s == L'/' || *s == L'\\')
pos++;
wcsncpy(buffer, name, pos);
do
{
if (!(fd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY))
{
wcscpy(&buffer[pos], fd.cFileName);
if (wadd(_wcsdup(buffer)) < 0)
{
FindClose(hFile);
return -1;
}
first = FALSE;
}
}
while(FindNextFileW(hFile, &fd));
FindClose(hFile);
}
}
if (first)
{
if (wadd(name) < 0)
return -1;
}
else
free(name);
return 0;
}
int aadd(char* name)
{
char** _new;
if ((__argc % SIZE) == 0)
{
if (__argv == NULL)
_new = malloc(sizeof(char*) * (1 + SIZE));
else
_new = realloc(__argv, sizeof(char*) * (__argc + 1 + SIZE));
if (_new == NULL)
return -1;
__argv = _new;
}
__argv[__argc++] = name;
__argv[__argc] = NULL;
return 0;
}
int aexpand(char* name, int expand_wildcards)
{
char* s;
WIN32_FIND_DATAA fd;
HANDLE hFile;
BOOLEAN first = TRUE;
char buffer[MAX_PATH];
uintptr_t pos;
if (expand_wildcards && (s = strpbrk(name, "*?")))
{
hFile = FindFirstFileA(name, &fd);
if (hFile != INVALID_HANDLE_VALUE)
{
while(s != name && *s != '/' && *s != '\\')
s--;
pos = s - name;
if (*s == '/' || *s == '\\')
pos++;
strncpy(buffer, name, pos);
do
{
if (!(fd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY))
{
strcpy(&buffer[pos], fd.cFileName);
if (aadd(_strdup(buffer)) < 0)
{
FindClose(hFile);
return -1;
}
first = FALSE;
}
}
while(FindNextFileA(hFile, &fd));
FindClose(hFile);
}
}
if (first)
{
if (aadd(name) < 0)
return -1;
}
else
free(name);
return 0;
}
/*
* @implemented
*/
void __getmainargs(int* argc, char*** argv, char*** env, int expand_wildcards, int* new_mode)
{
int i, doexpand, slashesAdded, escapedQuote, inQuotes, bufferIndex, anyLetter;
size_t len;
char* buffer;
/* missing threading init */
i = 0;
doexpand = expand_wildcards;
escapedQuote = FALSE;
anyLetter = FALSE;
slashesAdded = 0;
inQuotes = 0;
bufferIndex = 0;
if (__argv && _environ)
{
*argv = __argv;
*env = _environ;
*argc = __argc;
return;
}
__argc = 0;
len = strlen(_acmdln);
buffer = malloc(sizeof(char) * len);
// Reference: https://msdn.microsoft.com/en-us/library/a1y7w461.aspx
while (TRUE)
{
// Arguments are delimited by white space, which is either a space or a tab.
if (i >= len || ((_acmdln[i] == ' ' || _acmdln[i] == '\t') && !inQuotes))
{
// Handle the case when empty spaces are in the end of the cmdline
if (anyLetter)
{
aexpand(strndup(buffer, bufferIndex), doexpand);
}
// Copy the last element from buffer and quit the loop
if (i >= len)
{
break;
}
while (_acmdln[i] == ' ' || _acmdln[i] == '\t')
++i;
anyLetter = FALSE;
bufferIndex = 0;
slashesAdded = 0;
escapedQuote = FALSE;
continue;
}
anyLetter = TRUE;
if (_acmdln[i] == '\\')
{
buffer[bufferIndex++] = _acmdln[i];
++slashesAdded;
++i;
escapedQuote = FALSE;
continue;
}
if (_acmdln[i] == '\"')
{
if (slashesAdded > 0)
{
if (slashesAdded % 2 == 0)
{
// If an even number of backslashes is followed by a double quotation mark, then one backslash (\)
// is placed in the argv array for every pair of backslashes (\\), and the double quotation mark (")
// is interpreted as a string delimiter.
bufferIndex -= slashesAdded / 2;
}
else
{
// If an odd number of backslashes is followed by a double quotation mark, then one backslash (\)
// is placed in the argv array for every pair of backslashes (\\) and the double quotation mark is
// interpreted as an escape sequence by the remaining backslash, causing a literal double quotation mark (")
// to be placed in argv.
bufferIndex -= slashesAdded / 2 + 1;
buffer[bufferIndex++] = '\"';
slashesAdded = 0;
escapedQuote = TRUE;
++i;
continue;
}
slashesAdded = 0;
}
else if (!inQuotes && i > 0 && _acmdln[i - 1] == '\"' && !escapedQuote)
{
buffer[bufferIndex++] = '\"';
++i;
escapedQuote = TRUE;
continue;
}
slashesAdded = 0;
escapedQuote = FALSE;
inQuotes = !inQuotes;
doexpand = inQuotes ? FALSE : expand_wildcards;
++i;
continue;
}
buffer[bufferIndex++] = _acmdln[i];
slashesAdded = 0;
escapedQuote = FALSE;
++i;
}
/* Free the temporary buffer. */
free(buffer);
*argc = __argc;
if (__argv == NULL)
{
__argv = (char**)malloc(sizeof(char*));
__argv[0] = 0;
}
*argv = __argv;
*env = _environ;
_pgmptr = malloc(MAX_PATH * sizeof(char));
if (_pgmptr)
{
if (!GetModuleFileNameA(NULL, _pgmptr, MAX_PATH))
_pgmptr[0] = '\0';
else
_pgmptr[MAX_PATH - 1] = '\0';
}
else
{
_pgmptr = _strdup(__argv[0]);
}
HeapValidate(GetProcessHeap(), 0, NULL);
// if (new_mode) _set_new_mode(*new_mode);
}
/*
* @implemented
*/
void __wgetmainargs(int* argc, wchar_t*** wargv, wchar_t*** wenv,
int expand_wildcards, int* new_mode)
{
int i, doexpand, slashesAdded, escapedQuote, inQuotes, bufferIndex, anyLetter;
size_t len;
wchar_t* buffer;
/* missing threading init */
i = 0;
doexpand = expand_wildcards;
escapedQuote = FALSE;
anyLetter = TRUE;
slashesAdded = 0;
inQuotes = 0;
bufferIndex = 0;
if (__wargv && __winitenv)
{
*wargv = __wargv;
*wenv = __winitenv;
*argc = __argc;
return;
}
__argc = 0;
len = wcslen(_wcmdln);
buffer = malloc(sizeof(wchar_t) * len);
// Reference: https://msdn.microsoft.com/en-us/library/a1y7w461.aspx
while (TRUE)
{
// Arguments are delimited by white space, which is either a space or a tab.
if (i >= len || ((_wcmdln[i] == ' ' || _wcmdln[i] == '\t') && !inQuotes))
{
// Handle the case when empty spaces are in the end of the cmdline
if (anyLetter)
{
wexpand(wcsndup(buffer, bufferIndex), doexpand);
}
// Copy the last element from buffer and quit the loop
if (i >= len)
{
break;
}
while (_wcmdln[i] == ' ' || _wcmdln[i] == '\t')
++i;
anyLetter = FALSE;
bufferIndex = 0;
slashesAdded = 0;
escapedQuote = FALSE;
continue;
}
anyLetter = TRUE;
if (_wcmdln[i] == '\\')
{
buffer[bufferIndex++] = _wcmdln[i];
++slashesAdded;
++i;
escapedQuote = FALSE;
continue;
}
if (_wcmdln[i] == '\"')
{
if (slashesAdded > 0)
{
if (slashesAdded % 2 == 0)
{
// If an even number of backslashes is followed by a double quotation mark, then one backslash (\)
// is placed in the argv array for every pair of backslashes (\\), and the double quotation mark (")
// is interpreted as a string delimiter.
bufferIndex -= slashesAdded / 2;
}
else
{
// If an odd number of backslashes is followed by a double quotation mark, then one backslash (\)
// is placed in the argv array for every pair of backslashes (\\) and the double quotation mark is
// interpreted as an escape sequence by the remaining backslash, causing a literal double quotation mark (")
// to be placed in argv.
bufferIndex -= slashesAdded / 2 + 1;
buffer[bufferIndex++] = '\"';
slashesAdded = 0;
escapedQuote = TRUE;
++i;
continue;
}
slashesAdded = 0;
}
else if (!inQuotes && i > 0 && _wcmdln[i - 1] == '\"' && !escapedQuote)
{
buffer[bufferIndex++] = '\"';
++i;
escapedQuote = TRUE;
continue;
}
slashesAdded = 0;
escapedQuote = FALSE;
inQuotes = !inQuotes;
doexpand = inQuotes ? FALSE : expand_wildcards;
++i;
continue;
}
buffer[bufferIndex++] = _wcmdln[i];
slashesAdded = 0;
escapedQuote = FALSE;
++i;
}
/* Free the temporary buffer. */
free(buffer);
*argc = __argc;
if (__wargv == NULL)
{
__wargv = (wchar_t**)malloc(sizeof(wchar_t*));
__wargv[0] = 0;
}
*wargv = __wargv;
*wenv = __winitenv;
_wpgmptr = malloc(MAX_PATH * sizeof(wchar_t));
if (_wpgmptr)
{
if (!GetModuleFileNameW(NULL, _wpgmptr, MAX_PATH))
_wpgmptr[0] = '\0';
else
_wpgmptr[MAX_PATH - 1] = '\0';
}
else
{
_wpgmptr = _wcsdup(__wargv[0]);
}
HeapValidate(GetProcessHeap(), 0, NULL);
// if (new_mode) _set_new_mode(*new_mode);
}
/*
* @implemented
*/
int* __p___argc(void)
{
return &__argc;
}
/*
* @implemented
*/
char*** __p___argv(void)
{
return &__argv;
}
/*
* @implemented
*/
wchar_t*** __p___wargv(void)
{
return &__wargv;
}