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/*
* R : A Computer Language for Statistical Data Analysis
* Copyright (C) 1995, 1996 Robert Gentleman and Ross Ihaka
* Copyright (C) 1998--2012 The R Core Team
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, a copy is available at
* http://www.r-project.org/Licenses/
*/
/* Notes on so-called 'Large File Support'
The 'stat' structure returns a file size as 'off_t'. On some
32-bit systems this will fail if called on a file > 2GB. On
systems with LFS selected (see the notes in connections.c) the call
is re-mapped to *stat64, which uses off64_t for the file size.
file.info() returns file sizes as an R double.
On Windows we need to remap for ourselves. There are various
versions of the 'stat' structure (some with 64-bit times and not
available in the original MSVCRT.dll): we use _stati64 that simply
replaces off_t by __int64_t.
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <Defn.h>
#include <Internal.h>
#include <Rinterface.h>
#include <Fileio.h>
#include <R_ext/Applic.h> /* machar */
#include <ctype.h> /* toupper */
#include <time.h> /* for ctime */
# include <errno.h>
/* Machine Constants */
static void Init_R_Machine(SEXP rho)
{
SEXP ans, nms;
machar(&R_AccuracyInfo.ibeta,
&R_AccuracyInfo.it,
&R_AccuracyInfo.irnd,
&R_AccuracyInfo.ngrd,
&R_AccuracyInfo.machep,
&R_AccuracyInfo.negep,
&R_AccuracyInfo.iexp,
&R_AccuracyInfo.minexp,
&R_AccuracyInfo.maxexp,
&R_AccuracyInfo.eps,
&R_AccuracyInfo.epsneg,
&R_AccuracyInfo.xmin,
&R_AccuracyInfo.xmax);
R_dec_min_exponent = (int) floor(log10(R_AccuracyInfo.xmin)); /* smallest decimal exponent */
PROTECT(ans = allocVector(VECSXP, 18));
PROTECT(nms = allocVector(STRSXP, 18));
SET_STRING_ELT(nms, 0, mkChar("double.eps"));
SET_VECTOR_ELT(ans, 0, ScalarReal(R_AccuracyInfo.eps));
SET_STRING_ELT(nms, 1, mkChar("double.neg.eps"));
SET_VECTOR_ELT(ans, 1, ScalarReal(R_AccuracyInfo.epsneg));
SET_STRING_ELT(nms, 2, mkChar("double.xmin"));
SET_VECTOR_ELT(ans, 2, ScalarReal(R_AccuracyInfo.xmin));
SET_STRING_ELT(nms, 3, mkChar("double.xmax"));
SET_VECTOR_ELT(ans, 3, ScalarReal(R_AccuracyInfo.xmax));
SET_STRING_ELT(nms, 4, mkChar("double.base"));
SET_VECTOR_ELT(ans, 4, ScalarInteger(R_AccuracyInfo.ibeta));
SET_STRING_ELT(nms, 5, mkChar("double.digits"));
SET_VECTOR_ELT(ans, 5, ScalarInteger(R_AccuracyInfo.it));
SET_STRING_ELT(nms, 6, mkChar("double.rounding"));
SET_VECTOR_ELT(ans, 6, ScalarInteger(R_AccuracyInfo.irnd));
SET_STRING_ELT(nms, 7, mkChar("double.guard"));
SET_VECTOR_ELT(ans, 7, ScalarInteger(R_AccuracyInfo.ngrd));
SET_STRING_ELT(nms, 8, mkChar("double.ulp.digits"));
SET_VECTOR_ELT(ans, 8, ScalarInteger(R_AccuracyInfo.machep));
SET_STRING_ELT(nms, 9, mkChar("double.neg.ulp.digits"));
SET_VECTOR_ELT(ans, 9, ScalarInteger(R_AccuracyInfo.negep));
SET_STRING_ELT(nms, 10, mkChar("double.exponent"));
SET_VECTOR_ELT(ans, 10, ScalarInteger(R_AccuracyInfo.iexp));
SET_STRING_ELT(nms, 11, mkChar("double.min.exp"));
SET_VECTOR_ELT(ans, 11, ScalarInteger(R_AccuracyInfo.minexp));
SET_STRING_ELT(nms, 12, mkChar("double.max.exp"));
SET_VECTOR_ELT(ans, 12, ScalarInteger(R_AccuracyInfo.maxexp));
SET_STRING_ELT(nms, 13, mkChar("integer.max"));
SET_VECTOR_ELT(ans, 13, ScalarInteger(INT_MAX));
SET_STRING_ELT(nms, 14, mkChar("sizeof.long"));
SET_VECTOR_ELT(ans, 14, ScalarInteger(SIZEOF_LONG));
SET_STRING_ELT(nms, 15, mkChar("sizeof.longlong"));
SET_VECTOR_ELT(ans, 15, ScalarInteger(SIZEOF_LONG_LONG));
SET_STRING_ELT(nms, 16, mkChar("sizeof.longdouble"));
#ifdef HAVE_LONG_DOUBLE
SET_VECTOR_ELT(ans, 16, ScalarInteger(SIZEOF_LONG_DOUBLE));
#else
SET_VECTOR_ELT(ans, 16, ScalarInteger(0));
#endif
SET_STRING_ELT(nms, 17, mkChar("sizeof.pointer"));
SET_VECTOR_ELT(ans, 17, ScalarInteger(sizeof(SEXP)));
setAttrib(ans, R_NamesSymbol, nms);
defineVar(install(".Machine"), ans, rho);
UNPROTECT(2);
}
/* Platform
*
* Return various platform dependent strings. This is similar to
* "Machine", but for strings rather than numerical values. These
* two functions should probably be amalgamated.
*/
static const char * const R_OSType = OSTYPE;
static const char * const R_FileSep = FILESEP;
static void Init_R_Platform(SEXP rho)
{
SEXP value, names;
PROTECT(value = allocVector(VECSXP, 8));
PROTECT(names = allocVector(STRSXP, 8));
SET_STRING_ELT(names, 0, mkChar("OS.type"));
SET_STRING_ELT(names, 1, mkChar("file.sep"));
SET_STRING_ELT(names, 2, mkChar("dynlib.ext"));
SET_STRING_ELT(names, 3, mkChar("GUI"));
SET_STRING_ELT(names, 4, mkChar("endian"));
SET_STRING_ELT(names, 5, mkChar("pkgType"));
SET_STRING_ELT(names, 6, mkChar("path.sep"));
SET_STRING_ELT(names, 7, mkChar("r_arch"));
SET_VECTOR_ELT(value, 0, mkString(R_OSType));
SET_VECTOR_ELT(value, 1, mkString(R_FileSep));
SET_VECTOR_ELT(value, 2, mkString(SHLIB_EXT));
SET_VECTOR_ELT(value, 3, mkString(R_GUIType));
#ifdef WORDS_BIGENDIAN
SET_VECTOR_ELT(value, 4, mkString("big"));
#else
SET_VECTOR_ELT(value, 4, mkString("little"));
#endif
/* pkgType should be "mac.binary" for CRAN build *only*, not for all
AQUA builds. Also we want to be able to use "mac.binary.leopard"
and similar for special builds. */
#ifdef PLATFORM_PKGTYPE
SET_VECTOR_ELT(value, 5, mkString(PLATFORM_PKGTYPE));
#else /* unix default */
SET_VECTOR_ELT(value, 5, mkString("source"));
#endif
#ifdef Win32
SET_VECTOR_ELT(value, 6, mkString(";"));
#else /* not Win32 */
SET_VECTOR_ELT(value, 6, mkString(":"));
#endif
#ifdef R_ARCH
SET_VECTOR_ELT(value, 7, mkString(R_ARCH));
#else
SET_VECTOR_ELT(value, 7, mkString(""));
#endif
setAttrib(value, R_NamesSymbol, names);
defineVar(install(".Platform"), value, rho);
UNPROTECT(2);
}
void attribute_hidden Init_R_Variables(SEXP rho)
{
Init_R_Machine(rho);
Init_R_Platform(rho);
}
#ifdef HAVE_LANGINFO_CODESET
/* case-insensitive string comparison (needed for locale check) */
int static R_strieql(const char *a, const char *b)
{
while (*a && *b && toupper(*a) == toupper(*b)) { a++; b++; }
return (*a == 0 && *b == 0);
}
#endif
#include <locale.h>
#ifdef HAVE_LANGINFO_CODESET
# include <langinfo.h>
#endif
/* retrieves information about the current locale and
sets the corresponding variables (known_to_be_utf8,
known_to_be_latin1, utf8locale, latin1locale and mbcslocale) */
void attribute_hidden R_check_locale(void)
{
known_to_be_utf8 = utf8locale = FALSE;
known_to_be_latin1 = latin1locale = FALSE;
mbcslocale = FALSE;
#ifdef HAVE_LANGINFO_CODESET
{
char *p = nl_langinfo(CODESET);
/* more relaxed due to Darwin: CODESET is case-insensitive and
latin1 is ISO8859-1 */
if (R_strieql(p, "UTF-8")) known_to_be_utf8 = utf8locale = TRUE;
if (streql(p, "ISO-8859-1")) known_to_be_latin1 = latin1locale = TRUE;
if (R_strieql(p, "ISO8859-1")) known_to_be_latin1 = latin1locale = TRUE;
# if __APPLE__
/* On Darwin 'regular' locales such as 'en_US' are UTF-8 (hence
MB_CUR_MAX == 6), but CODESET is "" */
if (*p == 0 && MB_CUR_MAX == 6)
known_to_be_utf8 = utf8locale = TRUE;
# endif
}
#endif
mbcslocale = MB_CUR_MAX > 1;
#ifdef Win32
{
char *ctype = setlocale(LC_CTYPE, NULL), *p;
p = strrchr(ctype, '.');
if (p && isdigit(p[1])) localeCP = atoi(p+1); else localeCP = 0;
/* Not 100% correct, but CP1252 is a superset */
known_to_be_latin1 = latin1locale = (localeCP == 1252);
}
#endif
#if defined(SUPPORT_UTF8_WIN32) /* never at present */
utf8locale = mbcslocale = TRUE;
#endif
}
/* date
*
* Return the current date in a standard format. This uses standard
* POSIX calls which should be available on each platform. We should
* perhaps check this in the configure script.
*/
/* BDR 2000/7/20.
* time and ctime are in fact ANSI C calls, so we don't check them.
*/
static char *R_Date(void)
{
time_t t;
static char s[26]; /* own space */
time(&t);
strcpy(s, ctime(&t));
s[24] = '\0'; /* overwriting the final \n */
return s;
}
SEXP attribute_hidden do_date(SEXP call, SEXP op, SEXP args, SEXP rho)
{
checkArity(op, args);
return mkString(R_Date());
}
/* file.show
*
* Display file(s) so that a user can view it. The function calls
* "R_ShowFiles" which is a platform-dependent hook that arranges
* for the file(s) to be displayed.
*/
SEXP attribute_hidden do_fileshow(SEXP call, SEXP op, SEXP args, SEXP rho)
{
SEXP fn, tl, hd, pg;
const char **f, **h, *t, *pager = NULL /* -Wall */;
Rboolean dl;
int i, n;
checkArity(op, args);
fn = CAR(args); args = CDR(args);
hd = CAR(args); args = CDR(args);
tl = CAR(args); args = CDR(args);
dl = (Rboolean) asLogical(CAR(args)); args = CDR(args);
pg = CAR(args);
n = 0; /* -Wall */
if (!isString(fn) || (n = length(fn)) < 1)
error(_("invalid filename specification"));
if (!isString(hd) || length(hd) != n)
error(_("invalid '%s' argument"), "headers");
if (!isString(tl))
error(_("invalid '%s' argument"), "title");
if (!isString(pg))
error(_("invalid '%s' argument"), "pager");
f = (const char**) R_alloc(n, sizeof(char*));
h = (const char**) R_alloc(n, sizeof(char*));
for (i = 0; i < n; i++) {
SEXP el = STRING_ELT(fn, i);
if (!isNull(el) && el != NA_STRING)
#ifdef Win32
f[i] = acopy_string(reEnc(CHAR(el), getCharCE(el), CE_UTF8, 1));
#else
f[i] = acopy_string(translateChar(el));
#endif
else
error(_("invalid filename specification"));
if (STRING_ELT(hd, i) != NA_STRING)
h[i] = acopy_string(translateChar(STRING_ELT(hd, i)));
else
error(_("invalid '%s' argument"), "headers");
}
if (isValidStringF(tl))
t = acopy_string(translateChar(STRING_ELT(tl, 0)));
else
t = "";
if (isValidStringF(pg)) {
SEXP pg0 = STRING_ELT(pg, 0);
if (pg0 != NA_STRING)
pager = acopy_string(CHAR(pg0));
else
error(_("invalid '%s' argument"), "pager");
} else
pager = "";
R_ShowFiles(n, f, h, t, dl, pager);
return R_NilValue;
}
/* file.append
*
* Given two vectors of file names as arguments and arranges for
* the second set of files to be appended to the first.
*/
#if defined(BUFSIZ) && (BUFSIZ > 512)
/* OS's buffer size in stdio.h, probably.
Windows has 512, Solaris 1024, glibc 8192
*/
# define APPENDBUFSIZE BUFSIZ
#else
# define APPENDBUFSIZE 512
#endif
static int R_AppendFile(SEXP file1, SEXP file2)
{
FILE *fp1, *fp2;
char buf[APPENDBUFSIZE];
size_t nchar;
int status = 0;
if ((fp1 = RC_fopen(file1, "ab", TRUE)) == NULL) return 0;
if ((fp2 = RC_fopen(file2, "rb", TRUE)) == NULL) {
fclose(fp1);
return 0;
}
while ((nchar = fread(buf, 1, APPENDBUFSIZE, fp2)) == APPENDBUFSIZE)
if (fwrite(buf, 1, APPENDBUFSIZE, fp1) != APPENDBUFSIZE) goto append_error;
if (fwrite(buf, 1, nchar, fp1) != nchar) goto append_error;
status = 1;
append_error:
if (status == 0) warning(_("write error during file append"));
fclose(fp1);
fclose(fp2);
return status;
}
SEXP attribute_hidden do_fileappend(SEXP call, SEXP op, SEXP args, SEXP rho)
{
SEXP f1, f2, ans;
int n, n1, n2;
checkArity(op, args);
f1 = CAR(args); n1 = length(f1);
f2 = CADR(args); n2 = length(f2);
if (!isString(f1))
error(_("invalid '%s' argument"), "file1");
if (!isString(f2))
error(_("invalid '%s' argument"), "file2");
if (n1 < 1)
error(_("nothing to append to"));
if (n2 < 1)
return allocVector(LGLSXP, 0);
n = (n1 > n2) ? n1 : n2;
PROTECT(ans = allocVector(LGLSXP, n));
for (int i = 0; i < n; i++) LOGICAL(ans)[i] = 0; /* all FALSE */
if (n1 == 1) { /* common case */
FILE *fp1, *fp2;
char buf[APPENDBUFSIZE];
int status = 0;
size_t nchar;
if (STRING_ELT(f1, 0) == NA_STRING ||
!(fp1 = RC_fopen(STRING_ELT(f1, 0), "ab", TRUE)))
goto done;
for (int i = 0; i < n; i++) {
status = 0;
if (STRING_ELT(f2, i) == NA_STRING ||
!(fp2 = RC_fopen(STRING_ELT(f2, i), "rb", TRUE))) continue;
while ((nchar = fread(buf, 1, APPENDBUFSIZE, fp2)) == APPENDBUFSIZE)
if (fwrite(buf, 1, APPENDBUFSIZE, fp1) != APPENDBUFSIZE)
goto append_error;
if (fwrite(buf, 1, nchar, fp1) != nchar) goto append_error;
status = 1;
append_error:
if (status == 0)
warning(_("write error during file append"));
LOGICAL(ans)[i] = status;
fclose(fp2);
}
fclose(fp1);
} else {
for (int i = 0; i < n; i++) {
if (STRING_ELT(f1, i%n1) == R_NilValue ||
STRING_ELT(f2, i%n2) == R_NilValue)
LOGICAL(ans)[i] = 0;
else
LOGICAL(ans)[i] =
R_AppendFile(STRING_ELT(f1, i%n1), STRING_ELT(f2, i%n2));
}
}
done:
UNPROTECT(1);
return ans;
}
SEXP attribute_hidden do_filecreate(SEXP call, SEXP op, SEXP args, SEXP rho)
{
SEXP fn, ans;
FILE *fp;
int i, n, show;
checkArity(op, args);
fn = CAR(args);
if (!isString(fn))
error(_("invalid filename argument"));
show = asLogical(CADR(args));
if (show == NA_LOGICAL) show = 0;
n = length(fn);
PROTECT(ans = allocVector(LGLSXP, n));
for (i = 0; i < n; i++) {
LOGICAL(ans)[i] = 0;
if (STRING_ELT(fn, i) == NA_STRING) continue;
if ((fp = RC_fopen(STRING_ELT(fn, i), "w", TRUE)) != NULL) {
LOGICAL(ans)[i] = 1;
fclose(fp);
} else if (show) {
warning(_("cannot create file '%s', reason '%s'"),
translateChar(STRING_ELT(fn, i)), strerror(errno));
}
}
UNPROTECT(1);
return ans;
}
SEXP attribute_hidden do_fileremove(SEXP call, SEXP op, SEXP args, SEXP rho)
{
SEXP f, ans;
int i, n;
checkArity(op, args);
f = CAR(args);
if (!isString(f))
error(_("invalid first filename"));
n = length(f);
PROTECT(ans = allocVector(LGLSXP, n));
for (i = 0; i < n; i++) {
if (STRING_ELT(f, i) != NA_STRING) {
LOGICAL(ans)[i] =
#ifdef Win32
(_wremove(filenameToWchar(STRING_ELT(f, i), TRUE)) == 0);
#else
(remove(R_ExpandFileName(translateChar(STRING_ELT(f, i)))) == 0);
#endif
if(!LOGICAL(ans)[i])
warning(_("cannot remove file '%s', reason '%s'"),
translateChar(STRING_ELT(f, i)), strerror(errno));
} else LOGICAL(ans)[i] = FALSE;
}
UNPROTECT(1);
return ans;
}
#ifdef HAVE_UNISTD_H
#include <unistd.h> /* for symlink, getpid */
#endif
#ifdef HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif
#ifdef HAVE_SYS_STAT_H
# include <sys/stat.h>
#endif
#ifdef Win32
/* Mingw-w64 defines this to be 0x0502 */
#ifndef _WIN32_WINNT
# define _WIN32_WINNT 0x0500 /* for CreateHardLink */
#endif
#include <windows.h>
typedef BOOLEAN (WINAPI *PCSL)(LPWSTR, LPWSTR, DWORD);
static PCSL pCSL = NULL;
const char *formatError(DWORD res); /* extra.c */
/* Windows does not have link(), but it does have CreateHardLink() on NTFS */
#undef HAVE_LINK
#define HAVE_LINK 1
/* Windows does not have symlink(), but >= Vista does have
CreateSymbolicLink() on NTFS */
#undef HAVE_SYMLINK
#define HAVE_SYMLINK 1
#endif
/* the Win32 stuff here is not ready for release:
(i) It needs Windows >= Vista
(ii) It matters whether 'from' is a file or a dir, and we could only
know if it exists already.
(iii) This needs specific privileges which in general only Adminstrators
have, and which many people report granting in the Policy Editor
fails to work.
*/
SEXP attribute_hidden do_filesymlink(SEXP call, SEXP op, SEXP args, SEXP rho)
{
SEXP f1, f2;
int n, n1, n2;
#ifdef HAVE_SYMLINK
SEXP ans;
int i;
#endif
checkArity(op, args);
f1 = CAR(args); n1 = length(f1);
f2 = CADR(args); n2 = length(f2);
if (!isString(f1))
error(_("invalid first filename"));
if (!isString(f2))
error(_("invalid second filename"));
if (n1 < 1)
error(_("nothing to link"));
if (n2 < 1)
return allocVector(LGLSXP, 0);
n = (n1 > n2) ? n1 : n2;
#ifdef Win32
pCSL = (PCSL) GetProcAddress(GetModuleHandle(TEXT("kernel32.dll")),
"CreateSymbolicLinkW");
if(!pCSL)
error(_("symbolic links are not supported on this version of Windows"));
#endif
#ifdef HAVE_SYMLINK
PROTECT(ans = allocVector(LGLSXP, n));
for (i = 0; i < n; i++) {
if (STRING_ELT(f1, i%n1) == NA_STRING ||
STRING_ELT(f2, i%n2) == NA_STRING)
LOGICAL(ans)[i] = 0;
else {
#ifdef Win32
wchar_t *from, *to;
struct _stati64 sb;
from = filenameToWchar(STRING_ELT(f1, i%n1), TRUE);
to = filenameToWchar(STRING_ELT(f2, i%n2), TRUE);
_wstati64(from, &sb);
int isDir = (sb.st_mode & S_IFDIR) > 0;
LOGICAL(ans)[i] = pCSL(to, from, isDir) != 0;
if(!LOGICAL(ans)[i])
warning(_("cannot symlink '%ls' to '%ls', reason '%s'"),
from, to, formatError(GetLastError()));
#else
char from[PATH_MAX], to[PATH_MAX];
const char *p;
p = R_ExpandFileName(translateChar(STRING_ELT(f1, i%n1)));
if (strlen(p) >= PATH_MAX - 1) {
LOGICAL(ans)[i] = 0;
continue;
}
strcpy(from, p);
p = R_ExpandFileName(translateChar(STRING_ELT(f2, i%n2)));
if (strlen(p) >= PATH_MAX - 1) {
LOGICAL(ans)[i] = 0;
continue;
}
strcpy(to, p);
/* Rprintf("linking %s to %s\n", from, to); */
LOGICAL(ans)[i] = symlink(from, to) == 0;
if(!LOGICAL(ans)[i])
warning(_("cannot symlink '%s' to '%s', reason '%s'"),
from, to, strerror(errno));
#endif
}
}
UNPROTECT(1);
return ans;
#else
warning(_("symbolic links are not supported on this platform"));
return allocVector(LGLSXP, n);
#endif
}
SEXP attribute_hidden do_filelink(SEXP call, SEXP op, SEXP args, SEXP rho)
{
SEXP f1, f2;
int n, n1, n2;
#ifdef HAVE_LINK
SEXP ans;
int i;
#endif
checkArity(op, args);
f1 = CAR(args); n1 = length(f1);
f2 = CADR(args); n2 = length(f2);
if (!isString(f1))
error(_("invalid first filename"));
if (!isString(f2))
error(_("invalid second filename"));
if (n1 < 1)
error(_("nothing to link"));
if (n2 < 1)
return allocVector(LGLSXP, 0);
n = (n1 > n2) ? n1 : n2;
#ifdef HAVE_LINK
PROTECT(ans = allocVector(LGLSXP, n));
for (i = 0; i < n; i++) {
if (STRING_ELT(f1, i%n1) == NA_STRING ||
STRING_ELT(f2, i%n2) == NA_STRING)
LOGICAL(ans)[i] = 0;
else {
#ifdef Win32
wchar_t *from, *to;
from = filenameToWchar(STRING_ELT(f1, i%n1), TRUE);
to = filenameToWchar(STRING_ELT(f2, i%n2), TRUE);
LOGICAL(ans)[i] = CreateHardLinkW(to, from, NULL) != 0;
if(!LOGICAL(ans)[i]) {
warning(_("cannot link '%ls' to '%ls', reason '%s'"),
from, to, formatError(GetLastError()));
}
#else
char from[PATH_MAX], to[PATH_MAX];
const char *p;
p = R_ExpandFileName(translateChar(STRING_ELT(f1, i%n1)));
if (strlen(p) >= PATH_MAX - 1) {
LOGICAL(ans)[i] = 0;
continue;
}
strcpy(from, p);
p = R_ExpandFileName(translateChar(STRING_ELT(f2, i%n2)));
if (strlen(p) >= PATH_MAX - 1) {
LOGICAL(ans)[i] = 0;
continue;
}
strcpy(to, p);
LOGICAL(ans)[i] = link(from, to) == 0;
if(!LOGICAL(ans)[i]) {
warning(_("cannot link '%s' to '%s', reason '%s'"),
from, to, strerror(errno));
}
#endif
}
}
UNPROTECT(1);
return ans;
#else
warning(_("(hard) links are not supported on this platform"));
return allocVector(LGLSXP, n);
#endif
}
#ifdef Win32
int Rwin_rename(char *from, char *to); /* in src/gnuwin32/extra.c */
int Rwin_wrename(const wchar_t *from, const wchar_t *to);
#endif
SEXP attribute_hidden do_filerename(SEXP call, SEXP op, SEXP args, SEXP rho)
{
SEXP f1, f2, ans;
int i, n1, n2;
#ifdef Win32
wchar_t from[PATH_MAX], to[PATH_MAX];
const wchar_t *w;
#else
char from[PATH_MAX], to[PATH_MAX];
const char *p;
int res;
#endif
checkArity(op, args);
f1 = CAR(args); n1 = length(f1);
f2 = CADR(args); n2 = length(f2);
if (!isString(f1))
error(_("invalid '%s' argument"), "from");
if (!isString(f2))
error(_("invalid '%s' argument"), "to");
if (n2 != n1)
error(_("'from' and 'to' are of different lengths"));
PROTECT(ans = allocVector(LGLSXP, n1));
for (i = 0; i < n1; i++) {
if (STRING_ELT(f1, i) == NA_STRING ||
STRING_ELT(f2, i) == NA_STRING) {
LOGICAL(ans)[i] = 0;
continue;
}
#ifdef Win32
w = filenameToWchar(STRING_ELT(f1, i), TRUE);
if (wcslen(w) >= PATH_MAX - 1)
error(_("expanded 'from' name too long"));
wcsncpy(from, w, PATH_MAX - 1);
w = filenameToWchar(STRING_ELT(f2, i), TRUE);
if (wcslen(w) >= PATH_MAX - 1)
error(_("expanded 'to' name too long"));
wcsncpy(to, w, PATH_MAX - 1);
LOGICAL(ans)[i] = (Rwin_wrename(from, to) == 0);
#else
p = R_ExpandFileName(translateChar(STRING_ELT(f1, i)));
if (strlen(p) >= PATH_MAX - 1)
error(_("expanded 'from' name too long"));
strncpy(from, p, PATH_MAX - 1);
p = R_ExpandFileName(translateChar(STRING_ELT(f2, i)));
if (strlen(p) >= PATH_MAX - 1)
error(_("expanded 'to' name too long"));
strncpy(to, p, PATH_MAX - 1);
res = rename(from, to);
if(res) {
warning(_("cannot rename file '%s' to '%s', reason '%s'"),
from, to, strerror(errno));
}
LOGICAL(ans)[i] = (res == 0);
#endif
}
UNPROTECT(1);
return ans;
}
# if defined(Unix) && defined(HAVE_PWD_H) && defined(HAVE_GRP_H) \
&& defined(HAVE_GETPWUID) && defined(HAVE_GETGRGID)
# include <pwd.h>
# include <grp.h>
# define UNIX_EXTRAS 1
# endif
#ifdef Win32
# ifndef SCS_64BIT_BINARY
# define SCS_64BIT_BINARY 6
# endif
#endif
#if defined HAVE_STRUCT_STAT_ST_ATIM_TV_NSEC
# ifdef TYPEOF_STRUCT_STAT_ST_ATIM_IS_STRUCT_TIMESPEC
# define STAT_TIMESPEC(st, st_xtim) ((st).st_xtim)
# else
# define STAT_TIMESPEC_NS(st, st_xtim) ((st).st_xtim.tv_nsec)
# endif
#elif defined HAVE_STRUCT_STAT_ST_ATIMESPEC_TV_NSEC
# define STAT_TIMESPEC(st, st_xtim) ((st).st_xtim##espec)
#elif defined HAVE_STRUCT_STAT_ST_ATIMENSEC
# define STAT_TIMESPEC_NS(st, st_xtim) ((st).st_xtim##ensec)
#elif defined HAVE_STRUCT_STAT_ST_ATIM_ST__TIM_TV_NSEC
# define STAT_TIMESPEC_NS(st, st_xtim) ((st).st_xtim.st__tim.tv_nsec)
#endif
SEXP attribute_hidden do_fileinfo(SEXP call, SEXP op, SEXP args, SEXP rho)
{
SEXP fn, ans, ansnames, fsize, mtime, ctime, atime, isdir,
mode, xxclass;
#ifdef UNIX_EXTRAS
SEXP uid, gid, uname, grname;
struct passwd *stpwd;
struct group *stgrp;
#endif
int i, n;
#ifdef Win32
SEXP exe;
struct _stati64 sb;
#else
struct stat sb;
#endif
checkArity(op, args);
fn = CAR(args);
if (!isString(fn))
error(_("invalid filename argument"));
n = length(fn);
#ifdef UNIX_EXTRAS
PROTECT(ans = allocVector(VECSXP, 10));
PROTECT(ansnames = allocVector(STRSXP, 10));
#elif defined(Win32)
PROTECT(ans = allocVector(VECSXP, 7));
PROTECT(ansnames = allocVector(STRSXP, 7));
#else
PROTECT(ans = allocVector(VECSXP, 6));
PROTECT(ansnames = allocVector(STRSXP, 6));
#endif
fsize = SET_VECTOR_ELT(ans, 0, allocVector(REALSXP, n));
SET_STRING_ELT(ansnames, 0, mkChar("size"));
isdir = SET_VECTOR_ELT(ans, 1, allocVector(LGLSXP, n));
SET_STRING_ELT(ansnames, 1, mkChar("isdir"));
mode = SET_VECTOR_ELT(ans, 2, allocVector(INTSXP, n));
SET_STRING_ELT(ansnames, 2, mkChar("mode"));
mtime = SET_VECTOR_ELT(ans, 3, allocVector(REALSXP, n));
SET_STRING_ELT(ansnames, 3, mkChar("mtime"));
ctime = SET_VECTOR_ELT(ans, 4, allocVector(REALSXP, n));
SET_STRING_ELT(ansnames, 4, mkChar("ctime"));
atime = SET_VECTOR_ELT(ans, 5, allocVector(REALSXP, n));
SET_STRING_ELT(ansnames, 5, mkChar("atime"));
#ifdef UNIX_EXTRAS
uid = SET_VECTOR_ELT(ans, 6, allocVector(INTSXP, n));
SET_STRING_ELT(ansnames, 6, mkChar("uid"));
gid = SET_VECTOR_ELT(ans, 7, allocVector(INTSXP, n));
SET_STRING_ELT(ansnames, 7, mkChar("gid"));
uname = SET_VECTOR_ELT(ans, 8, allocVector(STRSXP, n));
SET_STRING_ELT(ansnames, 8, mkChar("uname"));
grname = SET_VECTOR_ELT(ans, 9, allocVector(STRSXP, n));
SET_STRING_ELT(ansnames, 9, mkChar("grname"));
#endif
#ifdef Win32
exe = SET_VECTOR_ELT(ans, 6, allocVector(STRSXP, n));
SET_STRING_ELT(ansnames, 6, mkChar("exe"));
#endif
for (i = 0; i < n; i++) {
#ifdef Win32
wchar_t *wfn = filenameToWchar(STRING_ELT(fn, i), TRUE);
/* 'Sharpie' and fellow ignorami use trailing / on Windows,
where it is not valid */
wchar_t *p = wfn + (wcslen(wfn) - 1);
if (*p == L'/' || *p == L'\\') *p = 0;
#else
const char *efn = R_ExpandFileName(translateChar(STRING_ELT(fn, i)));
#endif
if (STRING_ELT(fn, i) != NA_STRING &&
#ifdef Win32
_wstati64(wfn, &sb)
#else
/* Target not link */
stat(efn, &sb)
#endif
== 0) {
REAL(fsize)[i] = (double) sb.st_size;
LOGICAL(isdir)[i] = (sb.st_mode & S_IFDIR) > 0;
INTEGER(mode)[i] = (int) sb.st_mode & 0007777;
#if defined STAT_TIMESPEC
/* POSIX 2008 changed this to a struct timespec st_mtim etc
Not all OSes (e.g. Darwin) agree on this. */
REAL(mtime)[i] = (double) STAT_TIMESPEC(sb, st_mtim).tv_sec
+ 1e-9 * (double) STAT_TIMESPEC(sb, st_mtim).tv_nsec;
REAL(ctime)[i] = (double) STAT_TIMESPEC(sb, st_ctim).tv_sec
+ 1e-9 * (double) STAT_TIMESPEC(sb, st_ctim).tv_nsec;
REAL(atime)[i] = (double) STAT_TIMESPEC(sb, st_atim).tv_sec
+ 1e-9 * (double) STAT_TIMESPEC(sb, st_atim).tv_nsec;
#else
/* FIXME: there are higher-resolution ways to do this on Windows */
REAL(mtime)[i] = (double) sb.st_mtime;
REAL(ctime)[i] = (double) sb.st_ctime;
REAL(atime)[i] = (double) sb.st_atime;
# ifdef STAT_TIMESPEC_NS
REAL(mtime)[i] += STAT_TIMESPEC_NS (st, st_mtim);
REAL(ctime)[i] += STAT_TIMESPEC_NS (st, st_ctim);
REAL(atime)[i] += STAT_TIMESPEC_NS (st, st_atim);
# endif
#endif
#ifdef UNIX_EXTRAS
INTEGER(uid)[i] = (int) sb.st_uid;
INTEGER(gid)[i] = (int) sb.st_gid;
stpwd = getpwuid(sb.st_uid);
if (stpwd) SET_STRING_ELT(uname, i, mkChar(stpwd->pw_name));
else SET_STRING_ELT(uname, i, NA_STRING);
stgrp = getgrgid(sb.st_gid);
if (stgrp) SET_STRING_ELT(grname, i, mkChar(stgrp->gr_name));
else SET_STRING_ELT(grname, i, NA_STRING);
#endif
#ifdef Win32
{
char *s="no";
DWORD type;
if (GetBinaryTypeW(wfn, &type))
switch(type) {
case SCS_64BIT_BINARY:
s = "win64";
break;
case SCS_32BIT_BINARY:
s = "win32";
break;
case SCS_DOS_BINARY:
case SCS_PIF_BINARY:
s = "msdos";
break;
case SCS_WOW_BINARY:
s = "win16";
break;
default:
s = "unknown";
}
SET_STRING_ELT(exe, i, mkChar(s));
}
#endif
} else {
REAL(fsize)[i] = NA_REAL;
LOGICAL(isdir)[i] = NA_INTEGER;
INTEGER(mode)[i] = NA_INTEGER;
REAL(mtime)[i] = NA_REAL;
REAL(ctime)[i] = NA_REAL;
REAL(atime)[i] = NA_REAL;
#ifdef UNIX_EXTRAS
INTEGER(uid)[i] = NA_INTEGER;
INTEGER(gid)[i] = NA_INTEGER;
SET_STRING_ELT(uname, i, NA_STRING);
SET_STRING_ELT(grname, i, NA_STRING);
#endif
#ifdef Win32
SET_STRING_ELT(exe, i, NA_STRING);
#endif
}
}
setAttrib(ans, R_NamesSymbol, ansnames);
PROTECT(xxclass = mkString("octmode"));
classgets(mode, xxclass);
UNPROTECT(3);
return ans;
}
/* No longer required by POSIX, but maybe on earlier OSes */
#ifdef HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif
#if HAVE_DIRENT_H
# include <dirent.h>
#elif HAVE_SYS_NDIR_H
# include <sys/ndir.h>
#elif HAVE_SYS_DIR_H
# include <sys/dir.h>
#elif HAVE_NDIR_H
# include <ndir.h>
#endif
#define CBUFSIZE 2*PATH_MAX+1
static SEXP filename(const char *dir, const char *file)
{
SEXP ans;
char cbuf[CBUFSIZE];
if (dir) {
#ifdef Win32
if ((strlen(dir) == 2 && dir[1] == ':') ||
dir[strlen(dir) - 1] == '/' || dir[strlen(dir) - 1] == '\\')
snprintf(cbuf, CBUFSIZE, "%s%s", dir, file);
else
snprintf(cbuf, CBUFSIZE, "%s%s%s", dir, R_FileSep, file);
#else
snprintf(cbuf, CBUFSIZE, "%s%s%s", dir, R_FileSep, file);
#endif
ans = mkChar(cbuf);
} else {
snprintf(cbuf, CBUFSIZE, "%s", file);
ans = mkChar(cbuf);
}
return ans;
}
#include <tre/tre.h>
static void
list_files(const char *dnp, const char *stem, int *count, SEXP *pans,
Rboolean allfiles, Rboolean recursive,
const regex_t *reg, int *countmax, PROTECT_INDEX idx, Rboolean idirs)
{
DIR *dir;
struct dirent *de;
char p[PATH_MAX], stem2[PATH_MAX];
#ifdef Windows
/* > 2GB files might be skipped otherwise */
struct _stati64 sb;
#else
struct stat sb;
#endif
R_CheckUserInterrupt(); // includes stack check
if ((dir = opendir(dnp)) != NULL) {
while ((de = readdir(dir))) {
if (allfiles || !R_HiddenFile(de->d_name)) {
if (recursive) {
#ifdef Win32
if (strlen(dnp) == 2 && dnp[1] == ':')
snprintf(p, PATH_MAX, "%s%s", dnp, de->d_name);
else
snprintf(p, PATH_MAX, "%s%s%s", dnp, R_FileSep, de->d_name);
#else
snprintf(p, PATH_MAX, "%s%s%s", dnp, R_FileSep, de->d_name);
#endif
#ifdef Windows
_stati64(p, &sb);
#else
stat(p, &sb);
#endif
if ((sb.st_mode & S_IFDIR) > 0) {
if (strcmp(de->d_name, ".") && strcmp(de->d_name, "..")) {
if (idirs &&
(!reg || tre_regexec(reg, de->d_name, 0, NULL, 0) == 0)) {
if (*count == *countmax - 1) {
*countmax *= 2;
REPROTECT(*pans = lengthgets(*pans, *countmax), idx);
}
SET_STRING_ELT(*pans, (*count)++,
filename(stem, de->d_name));
}
if (stem) {
#ifdef Win32
if(strlen(stem) == 2 && stem[1] == ':')
snprintf(stem2, PATH_MAX, "%s%s", stem,
de->d_name);
else
snprintf(stem2, PATH_MAX, "%s%s%s", stem,
R_FileSep, de->d_name);
#else
snprintf(stem2, PATH_MAX, "%s%s%s", stem,
R_FileSep, de->d_name);
#endif
} else
strcpy(stem2, de->d_name);
list_files(p, stem2, count, pans, allfiles,
recursive, reg, countmax, idx, idirs);
}
continue;
}
}
if (!reg || tre_regexec(reg, de->d_name, 0, NULL, 0) == 0) {
if (*count == *countmax - 1) {
*countmax *= 2;
REPROTECT(*pans = lengthgets(*pans, *countmax), idx);
}
SET_STRING_ELT(*pans, (*count)++,
filename(stem, de->d_name));
}
}
}
closedir(dir);
}
}
SEXP attribute_hidden do_listfiles(SEXP call, SEXP op, SEXP args, SEXP rho)
{
PROTECT_INDEX idx;
SEXP d, p, ans;
int i, allfiles, fullnames, count, pattern, recursive, igcase, flags, idirs;
const char *dnp;
regex_t reg;
int countmax = 128;
checkArity(op, args);
d = CAR(args); args = CDR(args);
if (!isString(d)) error(_("invalid '%s' argument"), "directory");
p = CAR(args); args = CDR(args);
pattern = 0;
if (isString(p) && length(p) >= 1 && STRING_ELT(p, 0) != NA_STRING)
pattern = 1;
else if (!isNull(p) && !(isString(p) && length(p) < 1))
error(_("invalid '%s' argument"), "pattern");
allfiles = asLogical(CAR(args)); args = CDR(args);
if (allfiles == NA_LOGICAL)
error(_("invalid '%s' argument"), "all.files");
fullnames = asLogical(CAR(args)); args = CDR(args);
if (fullnames == NA_LOGICAL)
error(_("invalid '%s' argument"), "full.names");
recursive = asLogical(CAR(args)); args = CDR(args);
if (recursive == NA_LOGICAL)
error(_("invalid '%s' argument"), "recursive");
igcase = asLogical(CAR(args)); args = CDR(args);
if (igcase == NA_LOGICAL)
error(_("invalid '%s' argument"), "ignore.case");
idirs = asLogical(CAR(args));
if (idirs == NA_LOGICAL)
error(_("invalid '%s' argument"), "include.dirs");
flags = REG_EXTENDED;
if (igcase) flags |= REG_ICASE;
if (pattern && tre_regcomp(&reg, translateChar(STRING_ELT(p, 0)), flags))
error(_("invalid 'pattern' regular expression"));
PROTECT_WITH_INDEX(ans = allocVector(STRSXP, countmax), &idx);
count = 0;
for (i = 0; i < LENGTH(d) ; i++) {
if (STRING_ELT(d, i) == NA_STRING) continue;
dnp = R_ExpandFileName(translateChar(STRING_ELT(d, i)));
list_files(dnp, fullnames ? dnp : NULL, &count, &ans, allfiles,
recursive, pattern ? &reg : NULL, &countmax, idx, idirs);
}
REPROTECT(ans = lengthgets(ans, count), idx);
if (pattern) tre_regfree(&reg);
ssort(STRING_PTR(ans), count);
UNPROTECT(1);
return ans;
}
static void list_dirs(const char *dnp, const char *stem, int *count,
SEXP *pans, int *countmax, PROTECT_INDEX idx,
Rboolean recursive)
{
DIR *dir;
struct dirent *de;
char p[PATH_MAX], stem2[PATH_MAX];
#ifdef Windows
/* > 2GB files might be skipped otherwise */
struct _stati64 sb;
#else
struct stat sb;
#endif
R_CheckUserInterrupt(); // includes stack check
if ((dir = opendir(dnp)) != NULL) {
if (recursive) {
if (*count == *countmax - 1) {
*countmax *= 2;
REPROTECT(*pans = lengthgets(*pans, *countmax), idx);
}
SET_STRING_ELT(*pans, (*count)++, mkChar(dnp));
}
while ((de = readdir(dir))) {
#ifdef Win32
if (strlen(dnp) == 2 && dnp[1] == ':')
snprintf(p, PATH_MAX, "%s%s", dnp, de->d_name);
else
snprintf(p, PATH_MAX, "%s%s%s", dnp, R_FileSep, de->d_name);
#else
snprintf(p, PATH_MAX, "%s%s%s", dnp, R_FileSep, de->d_name);
#endif
#ifdef Windows
_stati64(p, &sb);
#else
stat(p, &sb);
#endif
if ((sb.st_mode & S_IFDIR) > 0) {
if (strcmp(de->d_name, ".") && strcmp(de->d_name, "..")) {
if(recursive) {
if (stem) {
#ifdef Win32
if(strlen(stem) == 2 && stem[1] == ':')
snprintf(stem2, PATH_MAX, "%s%s", stem,
de->d_name);
else
snprintf(stem2, PATH_MAX, "%s%s%s", stem,
R_FileSep, de->d_name);
#else
snprintf(stem2, PATH_MAX, "%s%s%s", stem,
R_FileSep, de->d_name);
#endif
} else strcpy(stem2, de->d_name);
list_dirs(p, stem2, count, pans, countmax, idx, recursive);
} else {
if (*count == *countmax - 1) {
*countmax *= 2;
REPROTECT(*pans = lengthgets(*pans, *countmax), idx);
}
SET_STRING_ELT(*pans, (*count)++, mkChar(p));
}
}
}
}
closedir(dir);
}
}
SEXP attribute_hidden do_listdirs(SEXP call, SEXP op, SEXP args, SEXP rho)
{
PROTECT_INDEX idx;
SEXP d, ans;
int fullnames, count, i, recursive;
const char *dnp;
int countmax = 128;
checkArity(op, args);
d = CAR(args); args = CDR(args);
if (!isString(d)) error(_("invalid '%s' argument"), "directory");
fullnames = asLogical(CAR(args)); args = CDR(args);
if (fullnames == NA_LOGICAL)
error(_("invalid '%s' argument"), "full.names");
recursive = asLogical(CAR(args)); args = CDR(args);
if (recursive == NA_LOGICAL)
error(_("invalid '%s' argument"), "recursive");
PROTECT_WITH_INDEX(ans = allocVector(STRSXP, countmax), &idx);
count = 0;
for (i = 0; i < LENGTH(d) ; i++) {
if (STRING_ELT(d, i) == NA_STRING) continue;
dnp = R_ExpandFileName(translateChar(STRING_ELT(d, i)));
list_dirs(dnp, fullnames ? dnp : NULL, &count, &ans, &countmax,
idx, recursive);
}
REPROTECT(ans = lengthgets(ans, count), idx);
ssort(STRING_PTR(ans), count);
UNPROTECT(1);
return ans;
}
SEXP attribute_hidden do_Rhome(SEXP call, SEXP op, SEXP args, SEXP rho)
{
char *path;
checkArity(op, args);
if (!(path = R_HomeDir()))
error(_("unable to determine R home location"));
return mkString(path);
}
#ifdef Win32
static Rboolean attribute_hidden R_WFileExists(const wchar_t *path)
{
struct _stati64 sb;
return _wstati64(path, &sb) == 0;
}
#endif
SEXP attribute_hidden do_fileexists(SEXP call, SEXP op, SEXP args, SEXP rho)
{
SEXP file, ans;
int i, nfile;
checkArity(op, args);
if (!isString(file = CAR(args)))
error(_("invalid '%s' argument"), "file");
nfile = length(file);
ans = allocVector(LGLSXP, nfile);
for (i = 0; i < nfile; i++) {
LOGICAL(ans)[i] = 0;
if (STRING_ELT(file, i) != NA_STRING) {
#ifdef Win32
/* Package XML sends arbitrarily long strings to file.exists! */
size_t len = strlen(CHAR(STRING_ELT(file, i)));
if (len > MAX_PATH)
LOGICAL(ans)[i] = FALSE;
else
LOGICAL(ans)[i] =
R_WFileExists(filenameToWchar(STRING_ELT(file, i), TRUE));
#else
LOGICAL(ans)[i] = R_FileExists(translateChar(STRING_ELT(file, i)));
#endif
} else LOGICAL(ans)[i] = FALSE;
}
return ans;
}
#define CHOOSEBUFSIZE 1024
#ifndef Win32
SEXP attribute_hidden do_filechoose(SEXP call, SEXP op, SEXP args, SEXP rho)
{
int _new, len;
char buf[CHOOSEBUFSIZE];
checkArity(op, args);
_new = asLogical(CAR(args));
if ((len = R_ChooseFile(_new, buf, CHOOSEBUFSIZE)) == 0)
error(_("file choice cancelled"));
if (len >= CHOOSEBUFSIZE - 1)
error(_("file name too long"));
return mkString(R_ExpandFileName(buf));
}
#endif
/* needed for access, and perhaps for realpath */
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#ifdef Win32
extern int winAccessW(const wchar_t *path, int mode);
#endif
/* we require 'access' as from 2.12.0 */
SEXP attribute_hidden do_fileaccess(SEXP call, SEXP op, SEXP args, SEXP rho)
{
SEXP fn, ans;
int i, n, mode, modemask;
checkArity(op, args);
fn = CAR(args);
if (!isString(fn))
error(_("invalid '%s' argument"), "names");
n = length(fn);
mode = asInteger(CADR(args));
if (mode < 0 || mode > 7) error(_("invalid '%s' argument"), "mode");
modemask = 0;
if (mode & 1) modemask |= X_OK;
if (mode & 2) modemask |= W_OK;
if (mode & 4) modemask |= R_OK;
PROTECT(ans = allocVector(INTSXP, n));
for (i = 0; i < n; i++)
if (STRING_ELT(fn, i) != NA_STRING) {
INTEGER(ans)[i] =
#ifdef Win32
winAccessW(filenameToWchar(STRING_ELT(fn, i), TRUE), modemask);
#else
access(R_ExpandFileName(translateChar(STRING_ELT(fn, i))),
modemask);
#endif
} else INTEGER(ans)[i] = FALSE;
UNPROTECT(1);
return ans;
}
#ifdef Win32
static int R_rmdir(const wchar_t *dir)
{
wchar_t tmp[MAX_PATH];
GetShortPathNameW(dir, tmp, MAX_PATH);
//printf("removing directory %ls\n", tmp);
return _wrmdir(tmp);
}
/* Junctions and symbolic links are fundamentally reparse points, so
apparently this is the way to detect them. */
static int isReparsePoint(const wchar_t *name)
{
DWORD res = GetFileAttributesW(name);
if(res == INVALID_FILE_ATTRIBUTES) {
warning("cannot get info on '%ls', reason '%s'",
name, formatError(GetLastError()));
return 0;
}
// printf("%ls: %x\n", name, res);
return res & FILE_ATTRIBUTE_REPARSE_POINT;
}
static int delReparsePoint(const wchar_t *name)
{
HANDLE hd =
CreateFileW(name, GENERIC_READ | GENERIC_WRITE, 0, 0, OPEN_EXISTING,
FILE_FLAG_BACKUP_SEMANTICS | FILE_FLAG_OPEN_REPARSE_POINT,
0);
if(hd == INVALID_HANDLE_VALUE) {
warning("cannot open reparse point '%ls', reason '%s'",
name, formatError(GetLastError()));
return 1;
}
REPARSE_GUID_DATA_BUFFER rgdb = {0};
rgdb.ReparseTag = IO_REPARSE_TAG_MOUNT_POINT;
DWORD dwBytes;
BOOL res = DeviceIoControl(hd, FSCTL_DELETE_REPARSE_POINT, &rgdb,
REPARSE_GUID_DATA_BUFFER_HEADER_SIZE,
NULL, 0, &dwBytes, 0);
CloseHandle(hd);
if(res == 0)
warning("cannot delete reparse point '%ls', reason '%s'",
name, formatError(GetLastError()));
else /* This may leave an empty dir behind */
R_rmdir(name);
return res == 0;
}
static int R_unlink(wchar_t *name, int recursive, int force)
{
R_CheckStack(); // called recursively
if (wcscmp(name, L".") == 0 || wcscmp(name, L"..") == 0) return 0;
//printf("R_unlink(%ls)\n", name);
if (!R_WFileExists(name)) return 0;
if (force) _wchmod(name, _S_IWRITE);
if (recursive) {
_WDIR *dir;
struct _wdirent *de;
wchar_t p[PATH_MAX];
struct _stati64 sb;
int n, ans = 0;
_wstati64(name, &sb);
/* We need to test for a junction first, as junctions
are detected as directories. */
if (isReparsePoint(name)) ans += delReparsePoint(name);
else if ((sb.st_mode & S_IFDIR) > 0) { /* a directory */
if ((dir = _wopendir(name)) != NULL) {
while ((de = _wreaddir(dir))) {
if (!wcscmp(de->d_name, L".") || !wcscmp(de->d_name, L".."))
continue;
/* On Windows we need to worry about trailing seps */
n = wcslen(name);
if (name[n] == L'/' || name[n] == L'\\') {
wcscpy(p, name); wcscat(p, de->d_name);
} else {
wcscpy(p, name); wcscat(p, L"/"); wcscat(p, de->d_name);
}
/* printf("stat-ing %ls\n", p); */
_wstati64(p, &sb);
if (isReparsePoint(name)) ans += delReparsePoint(name);
else if ((sb.st_mode & S_IFDIR) > 0) { /* a directory */
/* printf("is a directory\n"); */
if (force) _wchmod(p, _S_IWRITE);
ans += R_unlink(p, recursive, force);
} else {
if (force) _wchmod(p, _S_IWRITE);
ans += (_wunlink(p) == 0) ? 0 : 1;
}
}
_wclosedir(dir);
} else { /* we were unable to read a dir */
ans++;
}
ans += (R_rmdir(name) == 0) ? 0 : 1;
return ans;
}
/* drop through */
} else if (isReparsePoint(name)) return delReparsePoint(name);
return _wunlink(name) == 0 ? 0 : 1;
}
void R_CleanTempDir(void)
{
if (Sys_TempDir) {
size_t n = strlen(Sys_TempDir);
/* Windows cannot delete the current working directory */
SetCurrentDirectory(R_HomeDir());
wchar_t w[2*(n+1)];
mbstowcs(w, Sys_TempDir, n+1);
R_unlink(w, 1, 1); /* recursive=TRUE, force=TRUE */
}
}
#else
static int R_unlink(const char *name, int recursive, int force)
{
R_CheckStack(); // called recursively
struct stat sb;
int res, res2;
if (streql(name, ".") || streql(name, "..")) return 0;
/* We cannot use R_FileExists here since it is false for broken
symbolic links
if (!R_FileExists(name)) return 0; */
res = lstat(name, &sb); /* better to be lstat */
if (!res && force) chmod(name, sb.st_mode | S_IWUSR);
if (!res && recursive) {
DIR *dir;
struct dirent *de;
char p[PATH_MAX];
int ans = 0;
if ((sb.st_mode & S_IFDIR) > 0) { /* a directory */
if ((dir = opendir(name)) != NULL) {
while ((de = readdir(dir))) {
if (streql(de->d_name, ".") || streql(de->d_name, ".."))
continue;
size_t n = strlen(name);
if (name[n] == R_FileSep[0])
snprintf(p, PATH_MAX, "%s%s", name, de->d_name);
else
snprintf(p, PATH_MAX, "%s%s%s", name, R_FileSep,
de->d_name);
lstat(p, &sb);
if ((sb.st_mode & S_IFDIR) > 0) { /* a directory */
if (force) chmod(p, sb.st_mode | S_IWUSR | S_IXUSR);
ans += R_unlink(p, recursive, force);
} else {
if (force) chmod(p, sb.st_mode | S_IWUSR);
ans += (unlink(p) == 0) ? 0 : 1;
}
}
closedir(dir);
} else { /* we were unable to read a dir */
ans++;
}
ans += (rmdir(name) == 0) ? 0 : 1;
return ans;
}
/* drop through */
}
res2 = unlink(name);
/* We want to return 0 if either unlink succeeded or 'name' did not exist */
return (res2 == 0 || res != 0) ? 0 : 1;
}
/* for use under valgrind on OS X */
void attribute_hidden R_CleanTempDir2(void)
{
if (Sys_TempDir)
R_unlink(Sys_TempDir, 1, 1); /* recursive=TRUE, force=TRUE */
}
#endif
/* Note that wildcards are allowed in 'names' */
#ifdef Win32
# include <dos_wglob.h>
SEXP attribute_hidden do_unlink(SEXP call, SEXP op, SEXP args, SEXP env)
{
SEXP fn;
int i, j, nfiles, res, failures = 0, recursive, force;
const wchar_t *names;
wglob_t globbuf;
checkArity(op, args);
fn = CAR(args);
nfiles = length(fn);
if (nfiles > 0) {
if (!isString(fn))
error(_("invalid '%s' argument"), "x");
recursive = asLogical(CADR(args));
if (recursive == NA_LOGICAL)
error(_("invalid '%s' argument"), "recursive");
force = asLogical(CADDR(args));
if (force == NA_LOGICAL)
error(_("invalid '%s' argument"), "force");
for (i = 0; i < nfiles; i++) {
if (STRING_ELT(fn, i) != NA_STRING) {
names = filenameToWchar(STRING_ELT(fn, i), TRUE);
//Rprintf("do_unlink(%ls)\n", names);
res = dos_wglob(names, GLOB_NOCHECK, NULL, &globbuf);
if (res == GLOB_NOSPACE)
error(_("internal out-of-memory condition"));
for (j = 0; j < globbuf.gl_pathc; j++)
failures += R_unlink(globbuf.gl_pathv[j], recursive, force);
dos_wglobfree(&globbuf);
} else failures++;
}
}
return ScalarInteger(failures ? 1 : 0);
}
#else
# if defined(HAVE_GLOB) && defined(HAVE_GLOB_H)
# include <glob.h>
# endif
SEXP attribute_hidden do_unlink(SEXP call, SEXP op, SEXP args, SEXP env)
{
SEXP fn;
int i, nfiles, failures = 0, recursive, force;
const char *names;
#if defined(HAVE_GLOB)
int j, res;
glob_t globbuf;
#endif
checkArity(op, args);
fn = CAR(args);
nfiles = length(fn);
if (nfiles > 0) {
if (!isString(fn))
error(_("invalid '%s' argument"), "x");
recursive = asLogical(CADR(args));
if (recursive == NA_LOGICAL)
error(_("invalid '%s' argument"), "recursive");
force = asLogical(CADDR(args));
if (force == NA_LOGICAL)
error(_("invalid '%s' argument"), "force");
for (i = 0; i < nfiles; i++) {
if (STRING_ELT(fn, i) != NA_STRING) {
names = R_ExpandFileName(translateChar(STRING_ELT(fn, i)));
#if defined(HAVE_GLOB)
res = glob(names, GLOB_NOCHECK, NULL, &globbuf);
# ifdef GLOB_ABORTED
if (res == GLOB_ABORTED)
warning(_("read error on '%s'"), names);
# endif
# ifdef GLOB_NOSPACE
if (res == GLOB_NOSPACE)
error(_("internal out-of-memory condition"));
# endif
for (j = 0; j < globbuf.gl_pathc; j++)
failures += R_unlink(globbuf.gl_pathv[j], recursive, force);
globfree(&globbuf);
} else failures++;
#else /* HAVE_GLOB */
failures += R_unlink(names, recursive, force);
} else failures++;
#endif
}
}
return ScalarInteger(failures ? 1 : 0);
}
#endif
#if 0
static void chmod_one(const char *name)
{
DIR *dir;
struct dirent *de;
char p[PATH_MAX];
#ifdef Win32
struct _stati64 sb;
#else
struct stat sb;
#endif
#ifndef Win32
mode_t mask = S_IRUSR | S_IRGRP | S_IROTH | S_IWUSR, /* 0644 */
dirmask = mask | S_IXUSR | S_IXGRP | S_IXOTH; /* 0755 */
#endif
if (streql(name, ".") || streql(name, "..")) return;
if (!R_FileExists(name)) return;
#ifdef Win32
_stati64(name, &sb);
chmod(name, _S_IWRITE);
#else
stat(name, &sb);
chmod(name, (sb.st_mode | mask) & dirmask);
#endif
if ((sb.st_mode & S_IFDIR) > 0) { /* a directory */
#ifndef Win32
chmod(name, dirmask);
#endif
if ((dir = opendir(name)) != NULL) {
while ((de = readdir(dir))) {
if (streql(de->d_name, ".") || streql(de->d_name, ".."))
continue;
size_t n = strlen(name);
if (name[n-1] == R_FileSep[0])
snprintf(p, PATH_MAX, "%s%s", name, de->d_name);
else
snprintf(p, PATH_MAX, "%s%s%s", name, R_FileSep, de->d_name);
chmod_one(p);
}
closedir(dir);
} else {
/* we were unable to read a dir */
}
}
}
/* recursively fix up permissions: used for R CMD INSTALL and build.
NB: this overrides umask. */
SEXP attribute_hidden do_dirchmod(SEXP call, SEXP op, SEXP args, SEXP env)
{
SEXP dr;
checkArity(op, args);
dr = CAR(args);
if(!isString(dr) || length(dr) != 1)
error(_("invalid '%s' argument"), "dir");
chmod_one(translateChar(STRING_ELT(dr, 0)));
return R_NilValue;
}
#endif
SEXP attribute_hidden do_getlocale(SEXP call, SEXP op, SEXP args, SEXP rho)
{
int cat;
char *p = NULL;
checkArity(op, args);
cat = asInteger(CAR(args));
if (cat == NA_INTEGER || cat < 0)
error(_("invalid '%s' argument"), "category");
switch(cat) {
case 1: cat = LC_ALL; break;
case 2: cat = LC_COLLATE; break;
case 3: cat = LC_CTYPE; break;
case 4: cat = LC_MONETARY; break;
case 5: cat = LC_NUMERIC; break;
case 6: cat = LC_TIME; break;
#ifdef LC_MESSAGES
case 7: cat = LC_MESSAGES; break;
#endif
#ifdef LC_PAPER
case 8: cat = LC_PAPER; break;
#endif
#ifdef LC_MEASUREMENT
case 9: cat = LC_MEASUREMENT; break;
#endif
default: cat = NA_INTEGER;
}
if (cat != NA_INTEGER) p = setlocale(cat, NULL);
return mkString(p ? p : "");
}
extern void invalidate_cached_recodings(void); /* from sysutils.c */
extern void resetICUcollator(void); /* from util.c */
/* Locale specs are always ASCII */
SEXP attribute_hidden do_setlocale(SEXP call, SEXP op, SEXP args, SEXP rho)
{
SEXP locale = CADR(args), ans;
int cat;
const char *p;
checkArity(op, args);
cat = asInteger(CAR(args));
if (cat == NA_INTEGER || cat < 0)
error(_("invalid '%s' argument"), "category");
if (!isString(locale) || LENGTH(locale) != 1)
error(_("invalid '%s' argument"), "locale");
switch(cat) {
case 1:
{
const char *l = CHAR(STRING_ELT(locale, 0));
cat = LC_ALL;
/* assume we can set LC_CTYPE iff we can set the rest */
if ((p = setlocale(LC_CTYPE, l))) {
setlocale(LC_COLLATE, l);
resetICUcollator();
setlocale(LC_MONETARY, l);
setlocale(LC_TIME, l);
/* Need to return value of LC_ALL */
p = setlocale(cat, NULL);
}
break;
}
case 2:
cat = LC_COLLATE;
p = setlocale(cat, CHAR(STRING_ELT(locale, 0)));
resetICUcollator();
break;
case 3:
cat = LC_CTYPE;
p = setlocale(cat, CHAR(STRING_ELT(locale, 0)));
break;
case 4:
cat = LC_MONETARY;
p = setlocale(cat, CHAR(STRING_ELT(locale, 0)));
break;
case 5:
cat = LC_NUMERIC;
warning(_("setting 'LC_NUMERIC' may cause R to function strangely"));
p = setlocale(cat, CHAR(STRING_ELT(locale, 0)));
break;
case 6:
cat = LC_TIME;
p = setlocale(cat, CHAR(STRING_ELT(locale, 0)));
break;
#if defined LC_MESSAGES
case 7:
cat = LC_MESSAGES;
#ifdef Win32
/* this seems to exist in MinGW, but it does not work in Windows */
warning(_("LC_MESSAGES exists on Windows but is not operational"));
p = NULL;
#else
p = setlocale(cat, CHAR(STRING_ELT(locale, 0)));
#endif
break;
#endif
#ifdef LC_PAPER
case 8:
cat = LC_PAPER;
p = setlocale(cat, CHAR(STRING_ELT(locale, 0)));
break;
#endif
#ifdef LC_MEASUREMENT
case 9:
cat = LC_MEASUREMENT;
p = setlocale(cat, CHAR(STRING_ELT(locale, 0)));
break;
#endif
default:
p = NULL; /* -Wall */
error(_("invalid '%s' argument"), "category");
}
PROTECT(ans = allocVector(STRSXP, 1));
if (p) SET_STRING_ELT(ans, 0, mkChar(p));
else {
SET_STRING_ELT(ans, 0, mkChar(""));
warning(_("OS reports request to set locale to \"%s\" cannot be honored"),
CHAR(STRING_ELT(locale, 0)));
}
UNPROTECT(1);
R_check_locale();
invalidate_cached_recodings();
return ans;
}
SEXP attribute_hidden do_localeconv(SEXP call, SEXP op, SEXP args, SEXP rho)
{
SEXP ans, ansnames;
struct lconv *lc = localeconv();
int i = 0;
char buff[20];
PROTECT(ans = allocVector(STRSXP, 18));
PROTECT(ansnames = allocVector(STRSXP, 18));
SET_STRING_ELT(ans, i, mkChar(lc->decimal_point));
SET_STRING_ELT(ansnames, i++, mkChar("decimal_point"));
SET_STRING_ELT(ans, i, mkChar(lc->thousands_sep));
SET_STRING_ELT(ansnames, i++, mkChar("thousands_sep"));
SET_STRING_ELT(ans, i, mkChar(lc->grouping));
SET_STRING_ELT(ansnames, i++, mkChar("grouping"));
SET_STRING_ELT(ans, i, mkChar(lc->int_curr_symbol));
SET_STRING_ELT(ansnames, i++, mkChar("int_curr_symbol"));
SET_STRING_ELT(ans, i, mkChar(lc->currency_symbol));
SET_STRING_ELT(ansnames, i++, mkChar("currency_symbol"));
SET_STRING_ELT(ans, i, mkChar(lc->mon_decimal_point));
SET_STRING_ELT(ansnames, i++, mkChar("mon_decimal_point"));
SET_STRING_ELT(ans, i, mkChar(lc->mon_thousands_sep));
SET_STRING_ELT(ansnames, i++, mkChar("mon_thousands_sep"));
SET_STRING_ELT(ans, i, mkChar(lc->mon_grouping));
SET_STRING_ELT(ansnames, i++, mkChar("mon_grouping"));
SET_STRING_ELT(ans, i, mkChar(lc->positive_sign));
SET_STRING_ELT(ansnames, i++, mkChar("positive_sign"));
SET_STRING_ELT(ans, i, mkChar(lc->negative_sign));
SET_STRING_ELT(ansnames, i++, mkChar("negative_sign"));
sprintf(buff, "%d", (int)lc->int_frac_digits);
SET_STRING_ELT(ans, i, mkChar(buff));
SET_STRING_ELT(ansnames, i++, mkChar("int_frac_digits"));
sprintf(buff, "%d", (int)lc->frac_digits);
SET_STRING_ELT(ans, i, mkChar(buff));
SET_STRING_ELT(ansnames, i++, mkChar("frac_digits"));
sprintf(buff, "%d", (int)lc->p_cs_precedes);
SET_STRING_ELT(ans, i, mkChar(buff));
SET_STRING_ELT(ansnames, i++, mkChar("p_cs_precedes"));
sprintf(buff, "%d", (int)lc->p_sep_by_space);
SET_STRING_ELT(ans, i, mkChar(buff));
SET_STRING_ELT(ansnames, i++, mkChar("p_sep_by_space"));
sprintf(buff, "%d", (int)lc->n_cs_precedes);
SET_STRING_ELT(ans, i, mkChar(buff));
SET_STRING_ELT(ansnames, i++, mkChar("n_cs_precedes"));
sprintf(buff, "%d", (int)lc->n_sep_by_space);
SET_STRING_ELT(ans, i, mkChar(buff));
SET_STRING_ELT(ansnames, i++, mkChar("n_sep_by_space"));
sprintf(buff, "%d", (int)lc->p_sign_posn);
SET_STRING_ELT(ans, i, mkChar(buff));
SET_STRING_ELT(ansnames, i++, mkChar("p_sign_posn"));
sprintf(buff, "%d", (int)lc->n_sign_posn);
SET_STRING_ELT(ans, i, mkChar(buff));
SET_STRING_ELT(ansnames, i++, mkChar("n_sign_posn"));
setAttrib(ans, R_NamesSymbol, ansnames);
UNPROTECT(2);
return ans;
}
/* .Internal function for path.expand */
SEXP attribute_hidden do_pathexpand(SEXP call, SEXP op, SEXP args, SEXP rho)
{
SEXP fn, ans;
int i, n;
checkArity(op, args);
fn = CAR(args);
if (!isString(fn))
error(_("invalid '%s' argument"), "path");
n = length(fn);
PROTECT(ans = allocVector(STRSXP, n));
for (i = 0; i < n; i++) {
SEXP tmp = STRING_ELT(fn, i);
if (tmp != NA_STRING) {
tmp = markKnown(R_ExpandFileName(translateChar(tmp)), tmp);
}
SET_STRING_ELT(ans, i, tmp);
}
UNPROTECT(1);
return ans;
}
#ifdef Unix
static int var_R_can_use_X11 = -1;
extern Rboolean R_access_X11(void); /* from src/unix/X11.c */
static Rboolean R_can_use_X11(void)
{
if (var_R_can_use_X11 < 0) {
#ifdef HAVE_X11
if (strcmp(R_GUIType, "none") != 0) {
/* At this point we have permission to use the module, so try it */
var_R_can_use_X11 = R_access_X11();
} else {
var_R_can_use_X11 = 0;
}
#else
var_R_can_use_X11 = 0;
#endif
}
return var_R_can_use_X11 > 0;
}
#endif
/* only actually used on Unix */
SEXP attribute_hidden do_capabilitiesX11(SEXP call, SEXP op, SEXP args, SEXP rho)
{
#ifdef Unix
return ScalarLogical(R_can_use_X11());
#else
return ScalarLogical(FALSE);
#endif
}
SEXP attribute_hidden do_capabilities(SEXP call, SEXP op, SEXP args, SEXP rho)
{
SEXP ans, ansnames;
int i = 0;
#ifdef Unix
# ifdef HAVE_X11
int X11 = NA_LOGICAL;
# else
int X11 = FALSE;
# endif
#endif
checkArity(op, args);
PROTECT(ans = allocVector(LGLSXP, 15));
PROTECT(ansnames = allocVector(STRSXP, 15));
SET_STRING_ELT(ansnames, i, mkChar("jpeg"));
#ifdef HAVE_JPEG
# if defined Unix && !defined HAVE_WORKING_CAIRO
LOGICAL(ans)[i++] = X11;
# else
LOGICAL(ans)[i++] = TRUE;
# endif
#else
LOGICAL(ans)[i++] = FALSE;
#endif
SET_STRING_ELT(ansnames, i, mkChar("png"));
#ifdef HAVE_PNG
# if defined Unix && !defined HAVE_WORKING_CAIRO
LOGICAL(ans)[i++] = X11;
# else /* Windows */
LOGICAL(ans)[i++] = TRUE;
# endif
#else
LOGICAL(ans)[i++] = FALSE;
#endif
SET_STRING_ELT(ansnames, i, mkChar("tiff"));
#ifdef HAVE_TIFF
# if defined Unix && !defined HAVE_WORKING_CAIRO
LOGICAL(ans)[i++] = X11;
# else /* Windows */
LOGICAL(ans)[i++] = TRUE;
# endif
#else
LOGICAL(ans)[i++] = FALSE;
#endif
SET_STRING_ELT(ansnames, i, mkChar("tcltk"));
#ifdef HAVE_TCLTK
LOGICAL(ans)[i++] = TRUE;
#else
LOGICAL(ans)[i++] = FALSE;
#endif
SET_STRING_ELT(ansnames, i, mkChar("X11"));
#ifdef HAVE_X11
# if defined(Unix) /* && !defined(__APPLE_CC__) removed in 2.11.0 */
LOGICAL(ans)[i++] = X11;
# else
LOGICAL(ans)[i++] = TRUE;
# endif
#else
LOGICAL(ans)[i++] = FALSE;
#endif
SET_STRING_ELT(ansnames, i, mkChar("aqua"));
#ifdef HAVE_AQUA
LOGICAL(ans)[i++] = TRUE;
#else
LOGICAL(ans)[i++] = FALSE;
#endif
SET_STRING_ELT(ansnames, i, mkChar("http/ftp"));
#if HAVE_INTERNET
LOGICAL(ans)[i++] = TRUE;
#else
LOGICAL(ans)[i++] = FALSE;
#endif
SET_STRING_ELT(ansnames, i, mkChar("sockets"));
#ifdef HAVE_SOCKETS
LOGICAL(ans)[i++] = TRUE;
#else
LOGICAL(ans)[i++] = FALSE;
#endif
SET_STRING_ELT(ansnames, i, mkChar("libxml"));
#ifdef SUPPORT_LIBXML
LOGICAL(ans)[i++] = TRUE;
#else
LOGICAL(ans)[i++] = FALSE;
#endif
SET_STRING_ELT(ansnames, i, mkChar("fifo"));
#if defined(HAVE_MKFIFO) && defined(HAVE_FCNTL_H)
LOGICAL(ans)[i++] = TRUE;
#else
LOGICAL(ans)[i++] = FALSE;
#endif
/* This one is complex. Set it to be true only in interactive use,
with the Windows and GNOME GUIs (but not Tk GUI) or under Unix
if readline is available and in use. */
SET_STRING_ELT(ansnames, i, mkChar("cledit"));
LOGICAL(ans)[i] = FALSE;
#if defined(Win32)
if (R_Interactive) LOGICAL(ans)[i] = TRUE;
#endif
#ifdef Unix
if (strcmp(R_GUIType, "GNOME") == 0) { /* always interactive */
LOGICAL(ans)[i] = TRUE; /* also AQUA ? */
} else {
#if defined(HAVE_LIBREADLINE) && defined(HAVE_READLINE_HISTORY_H)
extern Rboolean UsingReadline;
if (R_Interactive && UsingReadline) LOGICAL(ans)[i] = TRUE;
#endif
}
#endif
i++;
/* always true as from R 2.10.0 */
SET_STRING_ELT(ansnames, i, mkChar("iconv"));
LOGICAL(ans)[i++] = TRUE;
SET_STRING_ELT(ansnames, i, mkChar("NLS"));
#ifdef ENABLE_NLS
LOGICAL(ans)[i++] = TRUE;
#else
LOGICAL(ans)[i++] = FALSE;
#endif
SET_STRING_ELT(ansnames, i, mkChar("profmem"));
#ifdef R_MEMORY_PROFILING
LOGICAL(ans)[i++] = TRUE;
#else
LOGICAL(ans)[i++] = FALSE;
#endif
SET_STRING_ELT(ansnames, i, mkChar("cairo"));
#ifdef HAVE_WORKING_CAIRO
LOGICAL(ans)[i++] = TRUE;
#elif defined(Win32)
{
/* This is true iff winCairo.dll is available */
struct stat sb;
char path[1000];
snprintf(path, 1000, "%s/library/grDevices/libs/%s/winCairo.dll",
R_HomeDir(), R_ARCH);
LOGICAL(ans)[i++] = stat(path, &sb) == 0;
}
#else
LOGICAL(ans)[i++] = FALSE;
#endif
setAttrib(ans, R_NamesSymbol, ansnames);
UNPROTECT(2);
return ans;
}
#if defined(HAVE_BSD_NETWORKING) && defined(HAVE_ARPA_INET_H)
#include <netdb.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
SEXP attribute_hidden do_nsl(SEXP call, SEXP op, SEXP args, SEXP rho)
{
SEXP ans = R_NilValue;
const char *name; char ip[] = "xxx.xxx.xxx.xxx";
struct hostent *hp;
checkArity(op, args);
if (!isString(CAR(args)) || length(CAR(args)) != 1)
error(_("'hostname' must be a character vector of length 1"));
name = translateChar(STRING_ELT(CAR(args), 0));
hp = gethostbyname(name);
if (hp == NULL) { /* cannot resolve the address */
warning(_("nsl() was unable to resolve host '%s'"), name);
} else {
if (hp->h_addrtype == AF_INET) {
struct in_addr in;
memcpy(&in.s_addr, *(hp->h_addr_list), sizeof (in.s_addr));
strcpy(ip, inet_ntoa(in));
} else {
warning(_("unknown format returned by C function 'gethostbyname'"));
}
ans = mkString(ip);
}
return ans;
}
#else
SEXP attribute_hidden do_nsl(SEXP call, SEXP op, SEXP args, SEXP rho)
{
warning(_("nsl() is not supported on this platform"));
return R_NilValue;
}
#endif
SEXP attribute_hidden do_sysgetpid(SEXP call, SEXP op, SEXP args, SEXP rho)
{
checkArity(op, args);
return ScalarInteger(getpid());
}
/* NB: we save errno immediately after the call here. This should not
be necessary on a POSIX OS, but it is on Windows, where it seems
that on some versions strerror itself changes errno (something
allowed in C99 but disallowed in POSIX). Also, something under
warning() might set errno in a future version.
*/
#ifndef Win32
/* mkdir is defined in <sys/stat.h> */
SEXP attribute_hidden do_dircreate(SEXP call, SEXP op, SEXP args, SEXP env)
{
SEXP path;
int res, show, recursive, mode, serrno = 0;
char *p, dir[PATH_MAX];
checkArity(op, args);
path = CAR(args);
if (!isString(path) || length(path) != 1)
error(_("invalid '%s' argument"), "path");
if (STRING_ELT(path, 0) == NA_STRING) return ScalarLogical(FALSE);
show = asLogical(CADR(args));
if (show == NA_LOGICAL) show = 0;
recursive = asLogical(CADDR(args));
if (recursive == NA_LOGICAL) recursive = 0;
mode = asInteger(CADDDR(args));
if (mode == NA_LOGICAL) mode = 0777;
strcpy(dir, R_ExpandFileName(translateChar(STRING_ELT(path, 0))));
/* remove trailing slashes */
p = dir + strlen(dir) - 1;
while (*p == '/' && strlen(dir) > 1) *p-- = '\0';
if (recursive) {
p = dir;
while ((p = Rf_strchr(p+1, '/'))) {
*p = '\0';
res = mkdir(dir, (mode_t) mode);
/* Solaris 10 returns ENOSYS on automount, PR#13834
EROFS is allowed by POSIX, so we skip that too */
serrno = errno;
if (res && serrno != EEXIST && serrno != ENOSYS && serrno != EROFS)
goto end;
*p = '/';
}
}
res = mkdir(dir, (mode_t) mode);
serrno = errno;
if (show && res && serrno == EEXIST)
warning(_("'%s' already exists"), dir);
end:
if (show && res && serrno != EEXIST)
warning(_("cannot create dir '%s', reason '%s'"), dir,
strerror(serrno));
return ScalarLogical(res == 0);
}
#else /* Win32 */
#include <io.h> /* mkdir is defined here */
SEXP attribute_hidden do_dircreate(SEXP call, SEXP op, SEXP args, SEXP env)
{
SEXP path;
wchar_t *p, dir[MAX_PATH];
int res, show, recursive, serrno = 0;
checkArity(op, args);
path = CAR(args);
if (!isString(path) || length(path) != 1)
error(_("invalid '%s' argument"), "path");
if (STRING_ELT(path, 0) == NA_STRING) return ScalarLogical(FALSE);
show = asLogical(CADR(args));
if (show == NA_LOGICAL) show = 0;
recursive = asLogical(CADDR(args));
if (recursive == NA_LOGICAL) recursive = 0;
wcscpy(dir, filenameToWchar(STRING_ELT(path, 0), TRUE));
for (p = dir; *p; p++) if (*p == L'/') *p = L'\\';
/* remove trailing slashes */
p = dir + wcslen(dir) - 1;
while (*p == L'\\' && wcslen(dir) > 1 && *(p-1) != L':') *p-- = L'\0';
if (recursive) {
p = dir;
/* skip leading \\share */
if (*p == L'\\' && *(p+1) == L'\\') {
p += 2;
p = wcschr(p, L'\\');
}
while ((p = wcschr(p+1, L'\\'))) {
*p = L'\0';
if (*(p-1) != L':') {
res = _wmkdir(dir);
serrno = errno;
if (res && serrno != EEXIST) goto end;
}
*p = L'\\';
}
}
res = _wmkdir(dir);
serrno = errno;
if (show && res && serrno == EEXIST)
warning(_("'%ls' already exists"), dir);
return ScalarLogical(res == 0);
end:
if (show && res && serrno != EEXIST)
warning(_("cannot create dir '%ls', reason '%s'"), dir,
strerror(serrno));
return ScalarLogical(res == 0);
}
#endif
/* take file/dir 'name' in dir 'from' and copy it to 'to'
'from', 'to' should have trailing path separator if needed.
*/
#ifdef Win32
static int do_copy(const wchar_t* from, const wchar_t* name, const wchar_t* to,
int over, int recursive, int perms, int depth)
{
R_CheckUserInterrupt(); // includes stack check
if(depth > 100) {
warning(_("too deep nesting"));
return 1;
}
struct _stati64 sb;
int nc, nfail = 0, res;
wchar_t dest[PATH_MAX + 1], this[PATH_MAX + 1];
if (wcslen(from) + wcslen(name) >= PATH_MAX) {
warning(_("over-long path length"));
return 1;
}
wsprintfW(this, L"%ls%ls", from, name);
_wstati64(this, &sb);
if ((sb.st_mode & S_IFDIR) > 0) { /* a directory */
_WDIR *dir;
struct _wdirent *de;
wchar_t p[PATH_MAX + 1];
if (!recursive) return 1;
nc = wcslen(to);
if (wcslen(to) + wcslen(name) >= PATH_MAX) {
warning(_("over-long path length"));
return 1;
}
wsprintfW(dest, L"%ls%ls", to, name);
/* We could set the mode (only the 200 part matters) later */
res = _wmkdir(dest);
if (res && errno != EEXIST) {
warning(_("problem creating directory %ls: %s"),
dest, strerror(errno));
return 1;
}
// NB Windows' mkdir appears to require \ not /.
if ((dir = _wopendir(this)) != NULL) {
depth++;
while ((de = _wreaddir(dir))) {
if (!wcscmp(de->d_name, L".") || !wcscmp(de->d_name, L".."))
continue;
if (wcslen(name) + wcslen(de->d_name) + 1 >= PATH_MAX) {
warning(_("over-long path length"));
return 1;
}
wsprintfW(p, L"%ls%\\%ls", name, de->d_name);
nfail += do_copy(from, p, to, over, recursive, perms, depth);
}
_wclosedir(dir);
} else {
warning(_("problem reading dir %ls: %s"), this, strerror(errno));
nfail++; /* we were unable to read a dir */
}
} else { /* a file */
FILE *fp1 = NULL, *fp2 = NULL;
wchar_t buf[APPENDBUFSIZE];
nfail = 0;
nc = wcslen(to);
if (nc + wcslen(name) >= PATH_MAX) {
warning(_("over-long path length"));
nfail++;
goto copy_error;
}
wsprintfW(dest, L"%ls%ls", to, name);
if (over || !R_WFileExists(dest)) { /* FIXME */
if ((fp1 = _wfopen(this, L"rb")) == NULL ||
(fp2 = _wfopen(dest, L"wb")) == NULL) {
warning(_("problem copying %ls to %ls: %s"),
this, dest, strerror(errno));
nfail++;
goto copy_error;
}
while ((nc = fread(buf, 1, APPENDBUFSIZE, fp1)) == APPENDBUFSIZE)
if (fwrite(buf, 1, APPENDBUFSIZE, fp2) != APPENDBUFSIZE) {
nfail++;
goto copy_error;
}
if (fwrite(buf, 1, nc, fp2) != nc) {
nfail++;
goto copy_error;
}
}
/* FIXME: perhaps manipulate mode as we do in Sys.chmod? */
if(perms) _wchmod(dest, sb.st_mode & 0777);
copy_error:
if(fp2) fclose(fp2);
if(fp1) fclose(fp1);
}
return nfail;
}
/* file.copy(files, dir, over, recursive=TRUE, perms), only */
SEXP attribute_hidden do_filecopy(SEXP call, SEXP op, SEXP args, SEXP rho)
{
SEXP fn, to, ans;
wchar_t *p, dir[PATH_MAX], from[PATH_MAX], name[PATH_MAX];
int i, nfiles, over, recursive, perms, nfail;
checkArity(op, args);
fn = CAR(args);
nfiles = length(fn);
PROTECT(ans = allocVector(LGLSXP, nfiles));
if (nfiles > 0) {
if (!isString(fn))
error(_("invalid '%s' argument"), "from");
to = CADR(args);
if (!isString(to) || LENGTH(to) != 1)
error(_("invalid '%s' argument"), "to");
over = asLogical(CADDR(args));
if (over == NA_LOGICAL)
error(_("invalid '%s' argument"), "over");
recursive = asLogical(CADDDR(args));
if (recursive == NA_LOGICAL)
error(_("invalid '%s' argument"), "recursive");
perms = asLogical(CAD4R(args));
if (perms == NA_LOGICAL)
error(_("invalid '%s' argument"), "copy.mode");
wcsncpy(dir,
filenameToWchar(STRING_ELT(to, 0), TRUE),
PATH_MAX);
if (*(dir + (wcslen(dir) - 1)) != L'\\')
wcsncat(dir, L"\\", PATH_MAX);
for (i = 0; i < nfiles; i++) {
if (STRING_ELT(fn, i) != NA_STRING) {
wcsncpy(from,
filenameToWchar(STRING_ELT(fn, i), TRUE),
PATH_MAX);
/* If there was a trailing sep, this is a mistake */
p = from + (wcslen(from) - 1);
if(*p == L'\\') *p = L'\0';
p = wcsrchr(from, L'\\') ;
if (p) {
wcsncpy(name, p+1, PATH_MAX);
*(p+1) = L'\0';
} else {
if(wcslen(from) > 2 && from[1] == L':') {
wcsncpy(name, from+2, PATH_MAX);
from[2] = L'\0';
} else {
wcsncpy(name, from, PATH_MAX);
wcsncpy(from, L".\\", PATH_MAX);
}
}
nfail = do_copy(from, name, dir, over, recursive, perms, 1);
} else nfail = 1;
LOGICAL(ans)[i] = (nfail == 0);
}
}
UNPROTECT(1);
return ans;
}
#else
static int do_copy(const char* from, const char* name, const char* to,
int over, int recursive, int perms, int depth)
{
R_CheckUserInterrupt(); // includes stack check
if(depth > 100) {
warning(_("too deep nesting"));
return 1;
}
struct stat sb;
int nfail = 0, res, mask;
char dest[PATH_MAX+1], this[PATH_MAX+1];
#ifdef HAVE_UMASK
int um = umask(0); umask((mode_t) um);
mask = 0777 & ~um;
#else
mask = 0777;
#endif
/* REprintf("from: %s, name: %s, to: %s\n", from, name, to); */
if (strlen(from) + strlen(name) >= PATH_MAX) {
warning(_("over-long path length"));
return 1;
}
snprintf(this, PATH_MAX+1, "%s%s", from, name);
/* Here we want the target not the link */
stat(this, &sb);
if ((sb.st_mode & S_IFDIR) > 0) { /* a directory */
DIR *dir;
struct dirent *de;
char p[PATH_MAX+1];
if (!recursive) return 1;
if (strlen(to) + strlen(name) >= PATH_MAX) {
warning(_("over-long path length"));
return 1;
}
snprintf(dest, PATH_MAX+1, "%s%s", to, name);
/* If a directory does not have write permission for the user,
we will fail to create files in that directory, so defer
setting mode */
res = mkdir(dest, 0700);
if (res && errno != EEXIST) {
warning(_("problem creating directory %s: %s"),
this, strerror(errno));
return 1;
}
strcat(dest, "/");
if ((dir = opendir(this)) != NULL) {
depth++;
while ((de = readdir(dir))) {
if (streql(de->d_name, ".") || streql(de->d_name, ".."))
continue;
if (strlen(name) + strlen(de->d_name) + 1 >= PATH_MAX) {
warning(_("over-long path length"));
return 1;
}
snprintf(p, PATH_MAX+1, "%s/%s", name, de->d_name);
nfail += do_copy(from, p, to, over, recursive, perms, depth);
}
closedir(dir);
} else {
warning(_("problem reading directory %s: %s"),
this, strerror(errno));
nfail++; /* we were unable to read a dir */
}
chmod(dest, (mode_t) (perms ? (sb.st_mode & mask): mask));
} else { /* a file */
FILE *fp1 = NULL, *fp2 = NULL;
char buf[APPENDBUFSIZE];
nfail = 0;
size_t nc = strlen(to);
if (strlen(to) + strlen(name) >= PATH_MAX) {
warning(_("over-long path length"));
nfail++;
goto copy_error;
}
snprintf(dest, PATH_MAX+1, "%s%s", to, name);
if (over || !R_FileExists(dest)) {
/* REprintf("copying %s to %s\n", this, dest); */
if ((fp1 = R_fopen(this, "rb")) == NULL ||
(fp2 = R_fopen(dest, "wb")) == NULL) {
warning(_("problem copying %s to %s: %s"),
this, dest, strerror(errno));
nfail++;
goto copy_error;
}
while ((nc = fread(buf, 1, APPENDBUFSIZE, fp1)) == APPENDBUFSIZE)
if (fwrite(buf, 1, APPENDBUFSIZE, fp2) != APPENDBUFSIZE) {
nfail++;
goto copy_error;
}
if (fwrite(buf, 1, nc, fp2) != nc) {
nfail++;
goto copy_error;
}
}
if(perms) chmod(dest, sb.st_mode & mask);
copy_error:
if(fp2) fclose(fp2);
if(fp1) fclose(fp1);
}
return nfail;
}
/* file.copy(files, dir, recursive), only */
SEXP attribute_hidden do_filecopy(SEXP call, SEXP op, SEXP args, SEXP rho)
{
SEXP fn, to, ans;
char *p, dir[PATH_MAX], from[PATH_MAX], name[PATH_MAX];
int i, nfiles, over, recursive, perms, nfail;
checkArity(op, args);
fn = CAR(args);
nfiles = length(fn);
PROTECT(ans = allocVector(LGLSXP, nfiles));
if (nfiles > 0) {
if (!isString(fn))
error(_("invalid '%s' argument"), "from");
to = CADR(args);
if (!isString(to) || LENGTH(to) != 1)
error(_("invalid '%s' argument"), "to");
over = asLogical(CADDR(args));
if (over == NA_LOGICAL)
error(_("invalid '%s' argument"), "over");
recursive = asLogical(CADDDR(args));
if (recursive == NA_LOGICAL)
error(_("invalid '%s' argument"), "recursive");
perms = asLogical(CAD4R(args));
if (perms == NA_LOGICAL)
error(_("invalid '%s' argument"), "copy.mode");
strncpy(dir,
R_ExpandFileName(translateChar(STRING_ELT(to, 0))),
PATH_MAX);
if (*(dir + (strlen(dir) - 1)) != '/')
strncat(dir, "/", PATH_MAX);
for (i = 0; i < nfiles; i++) {
if (STRING_ELT(fn, i) != NA_STRING) {
strncpy(from,
R_ExpandFileName(translateChar(STRING_ELT(fn, i))),
PATH_MAX);
/* If there is a trailing sep, this is a mistake */
p = from + (strlen(from) - 1);
if(*p == '/') *p = '\0';
p = strrchr(from, '/') ;
if (p) {
strncpy(name, p+1, PATH_MAX);
*(p+1) = '\0';
} else {
strncpy(name, from, PATH_MAX);
strncpy(from, "./", PATH_MAX);
}
nfail = do_copy(from, name, dir, over, recursive, perms, 1);
} else nfail = 1;
LOGICAL(ans)[i] = (nfail == 0);
}
}
UNPROTECT(1);
return ans;
}
#endif
SEXP attribute_hidden do_l10n_info(SEXP call, SEXP op, SEXP args, SEXP env)
{
#ifdef Win32
int len = 4;
#else
int len = 3;
#endif
SEXP ans, names;
checkArity(op, args);
PROTECT(ans = allocVector(VECSXP, len));
PROTECT(names = allocVector(STRSXP, len));
SET_STRING_ELT(names, 0, mkChar("MBCS"));
SET_STRING_ELT(names, 1, mkChar("UTF-8"));
SET_STRING_ELT(names, 2, mkChar("Latin-1"));
SET_VECTOR_ELT(ans, 0, ScalarLogical(mbcslocale));
SET_VECTOR_ELT(ans, 1, ScalarLogical(utf8locale));
SET_VECTOR_ELT(ans, 2, ScalarLogical(latin1locale));
#ifdef Win32
SET_STRING_ELT(names, 3, mkChar("codepage"));
SET_VECTOR_ELT(ans, 3, ScalarInteger(localeCP));
#endif
setAttrib(ans, R_NamesSymbol, names);
UNPROTECT(2);
return ans;
}
/* do_normalizepath moved to util.c in R 2.13.0 */
SEXP attribute_hidden do_syschmod(SEXP call, SEXP op, SEXP args, SEXP env)
{
#ifdef HAVE_CHMOD
SEXP paths, smode, ans;
int i, m, n, *modes, res;
mode_t um = 0;
checkArity(op, args);
paths = CAR(args);
if (!isString(paths))
error(_("invalid '%s' argument"), "paths");
n = LENGTH(paths);
PROTECT(smode = coerceVector(CADR(args), INTSXP));
modes = INTEGER(smode);
m = LENGTH(smode);
if(!m && n) error(_("'mode' must be of length at least one"));
int useUmask = asLogical(CADDR(args));
if (useUmask == NA_LOGICAL)
error(_("invalid '%s' argument"), "use_umask");
#ifdef HAVE_UMASK
um = umask(0); umask(um);
#endif
PROTECT(ans = allocVector(LGLSXP, n));
for (i = 0; i < n; i++) {
mode_t mode = (mode_t) modes[i % m];
if (mode == NA_INTEGER) mode = 0777;
#ifdef HAVE_UMASK
if(useUmask) mode = mode & ~um;
#endif
#ifdef Win32
/* Windows' _[w]chmod seems only to support read access
or read-write access. _S_IWRITE is 0200.
*/
mode = (mode & 0200) ? (_S_IWRITE | _S_IREAD): _S_IREAD;
#endif
if (STRING_ELT(paths, i) != NA_STRING) {
#ifdef Win32
res = _wchmod(filenameToWchar(STRING_ELT(paths, i), TRUE), mode);
#else
res = chmod(R_ExpandFileName(translateChar(STRING_ELT(paths, i))),
mode);
#endif
} else res = 1;
LOGICAL(ans)[i] = (res == 0);
}
UNPROTECT(2);
return ans;
#else
SEXP paths, ans;
int i, n;
checkArity(op, args);
paths = CAR(args);
if (!isString(paths))
error(_("invalid '%s' argument"), "paths");
n = LENGTH(paths);
warning("insufficient OS support on this platform");
PROTECT(ans = allocVector(LGLSXP, n));
for (i = 0; i < n; i++) LOGICAL(ans)[i] = 0;
UNPROTECT(1);
return ans;
#endif
}
SEXP attribute_hidden do_sysumask(SEXP call, SEXP op, SEXP args, SEXP env)
{
SEXP ans;
int mode;
mode_t res = 0;
checkArity(op, args);
mode = asInteger(CAR(args));
#ifdef HAVE_UMASK
if (mode == NA_INTEGER) {
res = umask(0);
umask(res);
R_Visible = TRUE;
} else {
res = umask((mode_t) mode);
R_Visible = FALSE;
}
#else
warning(_("insufficient OS support on this platform"));
R_Visible = FALSE;
#endif
PROTECT(ans = ScalarInteger(res));
setAttrib(ans, R_ClassSymbol, mkString("octmode"));
UNPROTECT(1);
return ans;
}
SEXP attribute_hidden do_readlink(SEXP call, SEXP op, SEXP args, SEXP env)
{
SEXP paths, ans;
int n;
#ifdef HAVE_READLINK
char buf[PATH_MAX+1];
ssize_t res;
int i;
#endif
checkArity(op, args);
paths = CAR(args);
if(!isString(paths))
error(_("invalid '%s' argument"), "paths");
n = LENGTH(paths);
PROTECT(ans = allocVector(STRSXP, n));
#ifdef HAVE_READLINK
for (i = 0; i < n; i++) {
memset(buf, 0, PATH_MAX+1);
res = readlink(R_ExpandFileName(translateChar(STRING_ELT(paths, i))),
buf, PATH_MAX);
if (res >= 0) SET_STRING_ELT(ans, i, mkChar(buf));
else if (errno == EINVAL) SET_STRING_ELT(ans, i, mkChar(""));
else SET_STRING_ELT(ans, i, NA_STRING);
}
#endif
UNPROTECT(1);
return ans;
}
SEXP attribute_hidden do_Cstack_info(SEXP call, SEXP op, SEXP args, SEXP rho)
{
SEXP ans, nms;
checkArity(op, args);
PROTECT(ans = allocVector(INTSXP, 4));
PROTECT(nms = allocVector(STRSXP, 4));
/* FIXME: could be out of range */
INTEGER(ans)[0] = (R_CStackLimit == -1) ? NA_INTEGER : (int) R_CStackLimit;
INTEGER(ans)[1] = (R_CStackLimit == -1) ? NA_INTEGER : (int)
(R_CStackDir * (R_CStackStart - (uintptr_t) &ans));
INTEGER(ans)[2] = R_CStackDir;
INTEGER(ans)[3] = R_EvalDepth;
SET_STRING_ELT(nms, 0, mkChar("size"));
SET_STRING_ELT(nms, 1, mkChar("current"));
SET_STRING_ELT(nms, 2, mkChar("direction"));
SET_STRING_ELT(nms, 3, mkChar("eval_depth"));
UNPROTECT(2);
setAttrib(ans, R_NamesSymbol, nms);
return ans;
}
#ifdef Win32
static int winSetFileTime(const char *fn, time_t ftime)
{
SYSTEMTIME st;
FILETIME modft;
struct tm *utctm;
HANDLE hFile;
utctm = gmtime(&ftime);
if (!utctm) return 0;
st.wYear = (WORD) utctm->tm_year + 1900;
st.wMonth = (WORD) utctm->tm_mon + 1;
st.wDayOfWeek = (WORD) utctm->tm_wday;
st.wDay = (WORD) utctm->tm_mday;
st.wHour = (WORD) utctm->tm_hour;
st.wMinute = (WORD) utctm->tm_min;
st.wSecond = (WORD) utctm->tm_sec;
st.wMilliseconds = (WORD) 0;
if (!SystemTimeToFileTime(&st, &modft)) return 0;
hFile = CreateFile(fn, GENERIC_WRITE, 0, NULL, OPEN_EXISTING,
FILE_FLAG_BACKUP_SEMANTICS, NULL);
if (hFile == INVALID_HANDLE_VALUE) return 0;
int res = SetFileTime(hFile, NULL, NULL, &modft);
CloseHandle(hFile);
return res != 0; /* success is non-zero */
}
#else
# ifdef HAVE_UTIMES
# include <sys/time.h>
# elif defined(HAVE_UTIME)
# include <utime.h>
# endif
#endif
SEXP attribute_hidden
do_setFileTime(SEXP call, SEXP op, SEXP args, SEXP rho)
{
checkArity(op, args);
const char *fn = translateChar(STRING_ELT(CAR(args), 0));
int ftime = asInteger(CADR(args)), res;
#ifdef Win32
res = winSetFileTime(fn, (time_t)ftime);
#elif defined(HAVE_UTIMES)
struct timeval times[2];
times[0].tv_sec = times[1].tv_sec = ftime;
times[0].tv_usec = times[1].tv_usec = 0;
res = utimes(fn, times) == 0;
#elif defined(HAVE_UTIME)
struct utimbuf settime;
settime.actime = settime.modtime = ftime;
res = utime(fn, &settime) == 0;
#endif
return ScalarLogical(res);
}
#ifdef Win32
/* based on ideas in
http://www.codeproject.com/KB/winsdk/junctionpoints.aspx
*/
typedef struct TMN_REPARSE_DATA_BUFFER
{
DWORD ReparseTag;
WORD ReparseDataLength;
WORD Reserved;
WORD SubstituteNameOffset;
WORD SubstituteNameLength;
WORD PrintNameOffset;
WORD PrintNameLength;
WCHAR PathBuffer[1024];
} TMN_REPARSE_DATA_BUFFER;
SEXP attribute_hidden do_mkjunction(SEXP call, SEXP op, SEXP args, SEXP rho)
{
wchar_t from[10000];
const wchar_t *to;
checkArity(op, args);
/* from and to are both directories: and to exists */
wcscpy(from, filenameToWchar(STRING_ELT(CAR(args), 0), FALSE));
to = filenameToWchar(STRING_ELT(CADR(args), 0), TRUE);
// printf("ln %ls %ls\n", from, to);
HANDLE hd =
CreateFileW(to, GENERIC_READ | GENERIC_WRITE, 0, 0, OPEN_EXISTING,
FILE_FLAG_BACKUP_SEMANTICS | FILE_FLAG_OPEN_REPARSE_POINT,
0);
if(hd == INVALID_HANDLE_VALUE) {
warning("cannot open reparse point '%ls', reason '%s'",
to, formatError(GetLastError()));
return ScalarLogical(1);
}
TMN_REPARSE_DATA_BUFFER rdb;
const size_t nbytes = wcslen(from) * 2;
rdb.ReparseTag = IO_REPARSE_TAG_MOUNT_POINT;
rdb.ReparseDataLength = nbytes + 12;
wcscpy(rdb.PathBuffer, from);
rdb.Reserved = 0;
rdb.SubstituteNameOffset = 0;
rdb.SubstituteNameLength = nbytes;
rdb.PrintNameOffset = nbytes + 2;
rdb.PrintNameLength = 0;
DWORD dwBytes;
const BOOL bOK =
DeviceIoControl(hd, FSCTL_SET_REPARSE_POINT, &rdb,
8 /* header */ + rdb.ReparseDataLength,
NULL, 0, &dwBytes, 0);
CloseHandle(hd);
if(!bOK)
warning("cannot set reparse point '%ls', reason '%s'",
to, formatError(GetLastError()));
return ScalarLogical(bOK != 0);
}
#endif
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