The R Project SVN
R
(root)/branches/R-2-15-branch/src/main/platform.c – Rev 61252
Rev 61028 | Blame | Compare with Previous | Last modification | View Log | Download | RSS feed
/** 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 some32-bit systems this will fail if called on a file > 2GB. Onsystems with LFS selected (see the notes in connections.c) the callis 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 variousversions of the 'stat' structure (some with 64-bit times and notavailable in the original MSVCRT.dll): we use _stati64 that simplyreplaces off_t by __int64_t.*/#ifdef HAVE_CONFIG_H# include <config.h>#endif#include <Defn.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"));SET_VECTOR_ELT(ans, 16, ScalarInteger(SIZEOF_LONG_DOUBLE));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_BIGENDIANSET_VECTOR_ELT(value, 4, mkString("big"));#elseSET_VECTOR_ELT(value, 4, mkString("little"));#endif/* pkgType should be "mac.binary" for CRAN build *only*, not for allAQUA builds. Also we want to be able to use "mac.binary.leopard"and similar for special builds. */#ifdef PLATFORM_PKGTYPESET_VECTOR_ELT(value, 5, mkString(PLATFORM_PKGTYPE));#else /* unix default */SET_VECTOR_ELT(value, 5, mkString("source"));#endif#ifdef Win32SET_VECTOR_ELT(value, 6, mkString(";"));#else /* not Win32 */SET_VECTOR_ELT(value, 6, mkString(":"));#endif#ifdef R_ARCHSET_VECTOR_ELT(value, 7, mkString(R_ARCH));#elseSET_VECTOR_ELT(value, 7, mkString(""));#endifsetAttrib(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 andsets 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 andlatin1 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 (henceMB_CUR_MAX == 6), but CODESET is "" */if (*p == 0 && MB_CUR_MAX == 6)known_to_be_utf8 = utf8locale = TRUE;# endif}#endifmbcslocale = 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 Win32f[i] = acopy_string(reEnc(CHAR(el), getCharCE(el), CE_UTF8, 1));#elsef[i] = acopy_string(translateChar(el));#endifelseerror(_("invalid filename specification"));if (STRING_ELT(hd, i) != NA_STRING)h[i] = acopy_string(translateChar(STRING_ELT(hd, i)));elseerror(_("invalid '%s' argument"), "headers");}if (isValidStringF(tl))t = acopy_string(translateChar(STRING_ELT(tl, 0)));elset = "";if (isValidStringF(pg)) {SEXP pg0 = STRING_ELT(pg, 0);if (pg0 != NA_STRING)pager = acopy_string(CHAR(pg0));elseerror(_("invalid '%s' argument"), "pager");} elsepager = "";R_ShowFiles(n, f, h, t, dl, pager);return R_NilValue;}/* file.edit** Open a file in a text editor. The function calls* "R_EditFiles" which is a platform dependent hook that invokes* the given editor.**/SEXP attribute_hidden do_fileedit(SEXP call, SEXP op, SEXP args, SEXP rho){SEXP fn, ti, ed;const char **f, **title, *editor;int i, n;checkArity(op, args);fn = CAR(args); args = CDR(args);ti = CAR(args); args = CDR(args);ed = CAR(args);n = length(fn);if (!isString(ed) || length(ed) != 1)error(_("invalid '%s' specification"), "editor");if (n > 0) {if (!isString(fn))error(_("invalid '%s' specification"), "filename");f = (const char**) R_alloc(n, sizeof(char*));title = (const char**) R_alloc(n, sizeof(char*));/* FIXME convert to UTF-8 on Windows */for (i = 0; i < n; i++) {SEXP el = STRING_ELT(fn, 0);if (!isNull(el))#ifdef Win32f[i] = acopy_string(reEnc(CHAR(el), getCharCE(el), CE_UTF8, 1));#elsef[i] = acopy_string(translateChar(el));#endifelsef[i] = "";if (!isNull(STRING_ELT(ti, i)))title[i] = acopy_string(translateChar(STRING_ELT(ti, i)));elsetitle[i] = "";}}else { /* open a new file for editing */n = 1;f = (const char**) R_alloc(1, sizeof(char*));f[0] = "";title = (const char**) R_alloc(1, sizeof(char*));title[0] = "";}SEXP ed0 = STRING_ELT(ed, 0);#ifdef Win32editor = acopy_string(reEnc(CHAR(ed0), getCharCE(ed0), CE_UTF8, 1));#elseeditor = acopy_string(translateChar(ed0));#endifR_EditFiles(n, f, title, editor);return R_NilValue;}/* file.append** Given two file names as arguments and arranges for* the second file to be appended to the second.* op = 1 is codeFiles.append, used in tools:::.file_append_ensuring_LFs*/#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#endifstatic 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 i, 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 (PRIMVAL(op) > 0 && n1 > 1)error(_("'outFile' must be a single file"));if (n2 < 1)return allocVector(LGLSXP, 0);n = (n1 > n2) ? n1 : n2;PROTECT(ans = allocVector(LGLSXP, n));for (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 (i = 0; i < n; i++) {status = 0;if (STRING_ELT(f2, i) == NA_STRING ||!(fp2 = RC_fopen(STRING_ELT(f2, i), "rb", TRUE))) continue;if (PRIMVAL(op) == 1) { /* codeFiles.append */snprintf(buf, APPENDBUFSIZE, "#line 1 \"%s\"\n",CHAR(STRING_ELT(f2, i)));if(fwrite(buf, 1, strlen(buf), fp1) != strlen(buf))goto append_error;}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;if (PRIMVAL(op) == 1 && buf[nchar - 1] != '\n') {if (fwrite("\n", 1, 1, fp1) != 1) 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 (i = 0; i < n; i++) {if (STRING_ELT(f1, i%n1) == R_NilValue ||STRING_ELT(f2, i%n2) == R_NilValue)LOGICAL(ans)[i] = 0;elseLOGICAL(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);#endifif(!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 haveCreateSymbolicLink() 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 onlyknow if it exists already.(iii) This needs specific privileges which in general only Adminstratorshave, and which many people report granting in the Policy Editorfails to work.*/SEXP attribute_hidden do_filesymlink(SEXP call, SEXP op, SEXP args, SEXP rho){SEXP f1, f2;int n, n1, n2;#ifdef HAVE_SYMLINKSEXP ans;int i;#endifcheckArity(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 Win32pCSL = (PCSL) GetProcAddress(GetModuleHandle(TEXT("kernel32.dll")),"CreateSymbolicLinkW");if(!pCSL)error(_("symbolic links are not supported on this version of Windows"));#endif#ifdef HAVE_SYMLINKPROTECT(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 Win32wchar_t from[PATH_MAX+1], *to;struct _stati64 sb;from[PATH_MAX] = L'\0';wcsncpy(from, filenameToWchar(STRING_ELT(f1, i%n1), TRUE), PATH_MAX);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()));#elsechar 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;#elsewarning(_("symlinks 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_LINKSEXP ans;int i;#endifcheckArity(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_LINKPROTECT(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 Win32wchar_t from[PATH_MAX+1], *to;from[PATH_MAX] = L'\0';wcsncpy(from, filenameToWchar(STRING_ELT(f1, i%n1), TRUE), PATH_MAX);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()));}#elsechar 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;#elsewarning(_("(hard) links are not supported on this platform"));return allocVector(LGLSXP, n);#endif}#ifdef Win32int Rwin_rename(char *from, char *to); /* in src/gnuwin32/extra.c */int Rwin_wrename(const wchar_t *from, const wchar_t *to);#endifSEXP attribute_hidden do_filerename(SEXP call, SEXP op, SEXP args, SEXP rho){SEXP f1, f2, ans;int i, n1, n2;#ifdef Win32wchar_t from[PATH_MAX], to[PATH_MAX];const wchar_t *w;#elsechar from[PATH_MAX], to[PATH_MAX];const char *p;int res;#endifcheckArity(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 Win32w = 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);#elsep = 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)#endifSEXP 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_EXTRASSEXP uid, gid, uname, grname;struct passwd *stpwd;struct group *stgrp;#endifint i, n;#ifdef Win32SEXP exe;struct _stati64 sb;#elsestruct stat sb;#endifcheckArity(op, args);fn = CAR(args);if (!isString(fn))error(_("invalid filename argument"));n = length(fn);#ifdef UNIX_EXTRASPROTECT(ans = allocVector(VECSXP, 10));PROTECT(ansnames = allocVector(STRSXP, 10));#elif defined(Win32)PROTECT(ans = allocVector(VECSXP, 7));PROTECT(ansnames = allocVector(STRSXP, 7));#elsePROTECT(ans = allocVector(VECSXP, 6));PROTECT(ansnames = allocVector(STRSXP, 6));#endiffsize = 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_EXTRASuid = 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 Win32exe = SET_VECTOR_ELT(ans, 6, allocVector(STRSXP, n));SET_STRING_ELT(ansnames, 6, mkChar("exe"));#endiffor (i = 0; i < n; i++) {#ifdef Win32wchar_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;#elseconst char *efn = R_ExpandFileName(translateChar(STRING_ELT(fn, i)));#endifif (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 etcNot 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_NSREAL(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_EXTRASINTEGER(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_EXTRASINTEGER(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 Win32SET_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+1static SEXP filename(const char *dir, const char *file){SEXP ans;char cbuf[CBUFSIZE];if (dir) {#ifdef Win32if ((strlen(dir) == 2 && dir[1] == ':') ||dir[strlen(dir) - 1] == '/' || dir[strlen(dir) - 1] == '\\')snprintf(cbuf, CBUFSIZE, "%s%s", dir, file);elsesnprintf(cbuf, CBUFSIZE, "%s%s%s", dir, R_FileSep, file);#elsesnprintf(cbuf, CBUFSIZE, "%s%s%s", dir, R_FileSep, file);#endifans = mkChar(cbuf);} else {snprintf(cbuf, CBUFSIZE, "%s", file);ans = mkChar(cbuf);}return ans;}#include <tre/tre.h>static voidlist_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;#elsestruct stat sb;#endifR_CheckUserInterrupt(); // includes stack checkif ((dir = opendir(dnp)) != NULL) {while ((de = readdir(dir))) {if (allfiles || !R_HiddenFile(de->d_name)) {if (recursive) {#ifdef Win32if (strlen(dnp) == 2 && dnp[1] == ':')snprintf(p, PATH_MAX, "%s%s", dnp, de->d_name);elsesnprintf(p, PATH_MAX, "%s%s%s", dnp, R_FileSep, de->d_name);#elsesnprintf(p, PATH_MAX, "%s%s%s", dnp, R_FileSep, de->d_name);#endif#ifdef Windows_stati64(p, &sb);#elsestat(p, &sb);#endifif ((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 Win32if(strlen(stem) == 2 && stem[1] == ':')snprintf(stem2, PATH_MAX, "%s%s", stem,de->d_name);elsesnprintf(stem2, PATH_MAX, "%s%s%s", stem,R_FileSep, de->d_name);#elsesnprintf(stem2, PATH_MAX, "%s%s%s", stem,R_FileSep, de->d_name);#endif} elsestrcpy(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(®, 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 ? ® : NULL, &countmax, idx, idirs);}REPROTECT(ans = lengthgets(ans, count), idx);if (pattern) tre_regfree(®);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;#elsestruct stat sb;#endifR_CheckUserInterrupt(); // includes stack checkif ((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 Win32if (strlen(dnp) == 2 && dnp[1] == ':')snprintf(p, PATH_MAX, "%s%s", dnp, de->d_name);elsesnprintf(p, PATH_MAX, "%s%s%s", dnp, R_FileSep, de->d_name);#elsesnprintf(p, PATH_MAX, "%s%s%s", dnp, R_FileSep, de->d_name);#endif#ifdef Windows_stati64(p, &sb);#elsestat(p, &sb);#endifif ((sb.st_mode & S_IFDIR) > 0) {if (strcmp(de->d_name, ".") && strcmp(de->d_name, "..")) {if(recursive) {if (stem) {#ifdef Win32if(strlen(stem) == 2 && stem[1] == ':')snprintf(stem2, PATH_MAX, "%s%s", stem,de->d_name);elsesnprintf(stem2, PATH_MAX, "%s%s%s", stem,R_FileSep, de->d_name);#elsesnprintf(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 Win32static Rboolean attribute_hidden R_WFileExists(const wchar_t *path){struct _stati64 sb;return _wstati64(path, &sb) == 0;}#endifSEXP 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;elseLOGICAL(ans)[i] =R_WFileExists(filenameToWchar(STRING_ELT(file, i), TRUE));#elseLOGICAL(ans)[i] = R_FileExists(translateChar(STRING_ELT(file, i)));#endif} else LOGICAL(ans)[i] = FALSE;}return ans;}#define CHOOSEBUFSIZE 1024#ifndef Win32SEXP 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 Win32extern 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 Win32winAccessW(filenameToWchar(STRING_ELT(fn, i), TRUE), modemask);#elseaccess(R_ExpandFileName(translateChar(STRING_ELT(fn, i))),modemask);#endif} else INTEGER(ans)[i] = FALSE;UNPROTECT(1);return ans;}#ifdef Win32static 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, soapparently 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 recursivelyif (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 junctionsare 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 */}}#elsestatic int R_unlink(const char *name, int recursive, int force){R_CheckStack(); // called recursivelystruct stat sb;int res, res2;if (streql(name, ".") || streql(name, "..")) return 0;/* We cannot use R_FileExists here since it is false for brokensymbolic linksif (!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);elsesnprintf(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># endifSEXP 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;#endifcheckArity(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_ABORTEDif (res == GLOB_ABORTED)warning(_("read error on '%s'"), names);# endif# ifdef GLOB_NOSPACEif (res == GLOB_NOSPACE)error(_("internal out-of-memory condition"));# endiffor (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);}#endifstatic void chmod_one(const char *name){DIR *dir;struct dirent *de;char p[PATH_MAX];#ifdef Win32struct _stati64 sb;#elsestruct stat sb;#endif#ifndef Win32mode_t mask = S_IRUSR | S_IRGRP | S_IROTH | S_IWUSR, /* 0644 */dirmask = mask | S_IXUSR | S_IXGRP | S_IXOTH; /* 0755 */#endifif (streql(name, ".") || streql(name, "..")) return;if (!R_FileExists(name)) return;#ifdef Win32_stati64(name, &sb);chmod(name, _S_IWRITE);#elsestat(name, &sb);chmod(name, (sb.st_mode | mask) & dirmask);#endifif ((sb.st_mode & S_IFDIR) > 0) { /* a directory */#ifndef Win32chmod(name, dirmask);#endifif ((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);elsesnprintf(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;}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_MESSAGEScase 7: cat = LC_MESSAGES; break;#endif#ifdef LC_PAPERcase 8: cat = LC_PAPER; break;#endif#ifdef LC_MEASUREMENTcase 9: cat = LC_MEASUREMENT; break;#endifdefault: 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_MESSAGEScase 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;#elsep = setlocale(cat, CHAR(STRING_ELT(locale, 0)));#endifbreak;#endif#ifdef LC_PAPERcase 8:cat = LC_PAPER;p = setlocale(cat, CHAR(STRING_ELT(locale, 0)));break;#endif#ifdef LC_MEASUREMENTcase 9:cat = LC_MEASUREMENT;p = setlocale(cat, CHAR(STRING_ELT(locale, 0)));break;#endifdefault: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 Unixstatic 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_X11if (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;}#elsevar_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 Unixreturn ScalarLogical(R_can_use_X11());#elsereturn 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_X11int X11 = NA_LOGICAL;# elseint X11 = FALSE;# endif#endifcheckArity(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_CAIROLOGICAL(ans)[i++] = X11;# elseLOGICAL(ans)[i++] = TRUE;# endif#elseLOGICAL(ans)[i++] = FALSE;#endifSET_STRING_ELT(ansnames, i, mkChar("png"));#ifdef HAVE_PNG# if defined Unix && !defined HAVE_WORKING_CAIROLOGICAL(ans)[i++] = X11;# else /* Windows */LOGICAL(ans)[i++] = TRUE;# endif#elseLOGICAL(ans)[i++] = FALSE;#endifSET_STRING_ELT(ansnames, i, mkChar("tiff"));#ifdef HAVE_TIFF# if defined Unix && !defined HAVE_WORKING_CAIROLOGICAL(ans)[i++] = X11;# else /* Windows */LOGICAL(ans)[i++] = TRUE;# endif#elseLOGICAL(ans)[i++] = FALSE;#endifSET_STRING_ELT(ansnames, i, mkChar("tcltk"));#ifdef HAVE_TCLTKLOGICAL(ans)[i++] = TRUE;#elseLOGICAL(ans)[i++] = FALSE;#endifSET_STRING_ELT(ansnames, i, mkChar("X11"));#ifdef HAVE_X11# if defined(Unix)LOGICAL(ans)[i++] = X11;# elseLOGICAL(ans)[i++] = TRUE;# endif#elseLOGICAL(ans)[i++] = FALSE;#endifSET_STRING_ELT(ansnames, i, mkChar("aqua"));#ifdef HAVE_AQUALOGICAL(ans)[i++] = TRUE;#elseLOGICAL(ans)[i++] = FALSE;#endifSET_STRING_ELT(ansnames, i, mkChar("http/ftp"));#if HAVE_INTERNETLOGICAL(ans)[i++] = TRUE;#elseLOGICAL(ans)[i++] = FALSE;#endifSET_STRING_ELT(ansnames, i, mkChar("sockets"));#ifdef HAVE_SOCKETSLOGICAL(ans)[i++] = TRUE;#elseLOGICAL(ans)[i++] = FALSE;#endifSET_STRING_ELT(ansnames, i, mkChar("libxml"));#ifdef SUPPORT_LIBXMLLOGICAL(ans)[i++] = TRUE;#elseLOGICAL(ans)[i++] = FALSE;#endifSET_STRING_ELT(ansnames, i, mkChar("fifo"));#if defined(HAVE_MKFIFO) && defined(HAVE_FCNTL_H)LOGICAL(ans)[i++] = TRUE;#elseLOGICAL(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 Unixif 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 Unixif (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}#endifi++;/* 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_NLSLOGICAL(ans)[i++] = TRUE;#elseLOGICAL(ans)[i++] = FALSE;#endifSET_STRING_ELT(ansnames, i, mkChar("profmem"));#ifdef R_MEMORY_PROFILINGLOGICAL(ans)[i++] = TRUE;#elseLOGICAL(ans)[i++] = FALSE;#endifSET_STRING_ELT(ansnames, i, mkChar("cairo"));#ifdef HAVE_WORKING_CAIROLOGICAL(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;}#elseLOGICAL(ans)[i++] = FALSE;#endifsetAttrib(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 gethostbyname"));}ans = mkString(ip);}return ans;}#elseSEXP attribute_hidden do_nsl(SEXP call, SEXP op, SEXP args, SEXP rho){warning(_("nsl() is not supported on this platform"));return R_NilValue;}#endifSEXP 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 notbe necessary on a POSIX OS, but it is on Windows, where it seemsthat on some versions strerror itself changes errno (somethingallowed in C99 but disallowed in POSIX). Also, something underwarning() 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#13834EROFS 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 Win32static 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 checkif(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;}#elsestatic int do_copy(const char* from, const char* name, const char* to,int over, int recursive, int perms, int depth){R_CheckUserInterrupt(); // includes stack checkif(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_UMASKint um = umask(0); umask((mode_t) um);mask = 0777 & ~um;#elsemask = 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 defersetting 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;}#endifSEXP attribute_hidden do_l10n_info(SEXP call, SEXP op, SEXP args, SEXP env){#ifdef Win32int len = 4;#elseint len = 3;#endifSEXP 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 Win32SET_STRING_ELT(names, 3, mkChar("codepage"));SET_VECTOR_ELT(ans, 3, ScalarInteger(localeCP));#endifsetAttrib(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_CHMODSEXP 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_UMASKum = umask(0); umask(um);#endifPROTECT(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_UMASKif(useUmask) mode = mode & ~um;#endif#ifdef Win32/* Windows' _[w]chmod seems only to support read accessor read-write access. _S_IWRITE is 0200.*/mode = (mode & 0200) ? (_S_IWRITE | _S_IREAD): _S_IREAD;#endifif (STRING_ELT(paths, i) != NA_STRING) {#ifdef Win32res = _wchmod(filenameToWchar(STRING_ELT(paths, i), TRUE), mode);#elseres = chmod(R_ExpandFileName(translateChar(STRING_ELT(paths, i))),mode);#endif} else res = 1;LOGICAL(ans)[i] = (res == 0);}UNPROTECT(2);return ans;#elseSEXP 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_UMASKif (mode == NA_INTEGER) {res = umask(0);umask(res);R_Visible = TRUE;} else {res = umask((mode_t) mode);R_Visible = FALSE;}#elsewarning(_("insufficient OS support on this platform"));R_Visible = FALSE;#endifPROTECT(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_READLINKchar buf[PATH_MAX+1];ssize_t res;int i;#endifcheckArity(op, args);paths = CAR(args);if(!isString(paths))error(_("invalid '%s' argument"), "paths");n = LENGTH(paths);PROTECT(ans = allocVector(STRSXP, n));#ifdef HAVE_READLINKfor (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);}#endifUNPROTECT(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 Win32static 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#endifSEXP attribute_hidden R_setFileTime(SEXP name, SEXP time){const char *fn = translateChar(STRING_ELT(name, 0));int ftime = asInteger(time), res;#ifdef Win32res = 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;#endifreturn ScalarLogical(res);}#ifdef Win32/* based on ideas inhttp://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