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//===-- Windows.cpp ---------------------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// This file provides Windows support functions
#include "lldb/Host/windows/windows.h"
#include "lldb/Host/windows/win32.h"
#include <stdio.h>
#include <stdarg.h>
#include <string.h>
#include <stdlib.h>
#include <io.h>
#include <cerrno>
int vasprintf(char **ret, const char *fmt, va_list ap)
{
char *buf;
int len;
size_t buflen;
va_list ap2;
#if defined(_MSC_VER) || defined(__MINGW64)
ap2 = ap;
len = _vscprintf(fmt, ap2);
#else
va_copy(ap2, ap);
len = vsnprintf(NULL, 0, fmt, ap2);
#endif
if (len >= 0 && (buf = (char*) malloc ((buflen = (size_t) (len + 1)))) != NULL) {
len = vsnprintf(buf, buflen, fmt, ap);
*ret = buf;
} else {
*ret = NULL;
len = -1;
}
va_end(ap2);
return len;
}
char * strcasestr(const char *s, const char* find)
{
char c, sc;
size_t len;
if ((c = *find++) != 0) {
c = tolower((unsigned char) c);
len = strlen(find);
do {
do {
if ((sc = *s++) == 0)
return 0;
} while ((char) tolower((unsigned char) sc) != c);
} while (strncasecmp(s, find, len) != 0);
s--;
}
return ((char *) s);
}
char* realpath(const char * name, char * resolved)
{
char *retname = NULL; /* we will return this, if we fail */
/* SUSv3 says we must set `errno = EINVAL', and return NULL,
* if `name' is passed as a NULL pointer.
*/
if (name == NULL)
errno = EINVAL;
/* Otherwise, `name' must refer to a readable filesystem object,
* if we are going to resolve its absolute path name.
*/
else if (access(name, 4) == 0)
{
/* If `name' didn't point to an existing entity,
* then we don't get to here; we simply fall past this block,
* returning NULL, with `errno' appropriately set by `access'.
*
* When we _do_ get to here, then we can use `_fullpath' to
* resolve the full path for `name' into `resolved', but first,
* check that we have a suitable buffer, in which to return it.
*/
if ((retname = resolved) == NULL)
{
/* Caller didn't give us a buffer, so we'll exercise the
* option granted by SUSv3, and allocate one.
*
* `_fullpath' would do this for us, but it uses `malloc', and
* Microsoft's implementation doesn't set `errno' on failure.
* If we don't do this explicitly ourselves, then we will not
* know if `_fullpath' fails on `malloc' failure, or for some
* other reason, and we want to set `errno = ENOMEM' for the
* `malloc' failure case.
*/
retname = (char*) malloc(_MAX_PATH);
}
/* By now, we should have a valid buffer.
* If we don't, then we know that `malloc' failed,
* so we can set `errno = ENOMEM' appropriately.
*/
if (retname == NULL)
errno = ENOMEM;
/* Otherwise, when we do have a valid buffer,
* `_fullpath' should only fail if the path name is too long.
*/
else if ((retname = _fullpath(retname, name, _MAX_PATH)) == NULL)
errno = ENAMETOOLONG;
}
/* By the time we get to here,
* `retname' either points to the required resolved path name,
* or it is NULL, with `errno' set appropriately, either of which
* is our required return condition.
*/
if (retname != NULL)
{
// Do a LongPath<->ShortPath roundtrip so that case is resolved by OS
int initialLength = strlen(retname);
TCHAR buffer[MAX_PATH];
GetShortPathName(retname, buffer, MAX_PATH);
GetLongPathName(buffer, retname, initialLength + 1);
// Force drive to be upper case
if (retname[1] == ':')
retname[0] = toupper(retname[0]);
}
return retname;
}
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