| /************************************************************************ |
| * |
| * file.cpp - definitions of testsuite file I/O helpers |
| * |
| * $Id$ |
| * |
| ************************************************************************ |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed |
| * with this work for additional information regarding copyright |
| * ownership. The ASF licenses this file to you under the Apache |
| * License, Version 2.0 (the "License"); you may not use this file |
| * except in compliance with the License. You may obtain a copy of |
| * the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or |
| * implied. See the License for the specific language governing |
| * permissions and limitations under the License. |
| * |
| * Copyright 2004-2007 Rogue Wave Software, Inc. |
| * |
| **************************************************************************/ |
| |
| // expand _TEST_EXPORT macros |
| #define _RWSTD_TEST_SRC |
| |
| #include <rw_file.h> |
| |
| #ifdef _RWSTD_OS_LINUX |
| # ifdef _RWSTD_NO_PURE_C_HEADERS |
| // on Linux define _XOPEN_SOURCE to get CODESET defined in <langinfo.h> |
| // (avoid this hackery when using pure "C' headers (i.e., with the EDG |
| // eccp demo) |
| # define _XOPEN_SOURCE 500 /* Single Unix conformance */ |
| // bring __int32_t into scope (otherwise <wctype.h> fails to compile) |
| # include <sys/types.h> |
| # endif |
| #endif // Linux |
| |
| #include <fcntl.h> |
| #include <sys/stat.h> |
| |
| #ifndef _WIN32 |
| # include <langinfo.h> // for CODESET |
| # include <unistd.h> // for close(), open() |
| #else |
| # include <io.h> // for _commit() |
| # ifdef _MSC_VER |
| # include <crtdbg.h> // for _CrtSetReportMode() |
| # endif |
| #endif |
| |
| #include <assert.h> // for assert |
| #include <errno.h> // for errno |
| #include <locale.h> // for LC_XXX macros |
| #include <stdio.h> // for sprintf, ... |
| #include <stdlib.h> // for free, malloc, realloc |
| #include <string.h> // for strcat, strcpy, strlen, ... |
| #include <ctype.h> |
| #include <wchar.h> // for wcslen, ... |
| |
| |
| #ifndef PATH_MAX |
| # define PATH_MAX 1024 |
| #endif |
| |
| #ifndef P_tmpdir |
| // P_tmpdir is an XSI (X/Open System Interfaces) extension |
| // to POSIX which need not be provided by otherwise conforming |
| // implementations |
| # define P_tmpdir "/tmp/" |
| #endif |
| |
| #ifndef _RWSTD_NO_PURE_C_HEADERS |
| |
| extern "C" int mkstemp (char*); |
| |
| #endif // _RWSTD_NO_PURE_C_HEADERS |
| |
| // write `str' using symbolic names from the Portable Character Set (PCS) |
| // or using the <U00XX> notations for narrow characters outside that set |
| // if (0 == str), writes out the CHARMAP section of the locale definition |
| // file for the Portable Character Set (in POSIX-compliant format) |
| _TEST_EXPORT void pcs_write (void *fpv, const char *str) |
| { |
| FILE* const fp = _RWSTD_STATIC_CAST (FILE*, fpv); |
| |
| // ASCII (ISO-646) character map definition |
| static const char* charmap[] = { |
| "<NUL>", "<SOH>", "<STX>", "<ETX>", "<EOT>", "<ENQ>", "<ACK>", "<BEL>", |
| "<backspace>", |
| "<tab>", |
| "<newline>", |
| "<vertical-tab>", |
| "<form-feed>", |
| "<carriage-return>", |
| "<SO>", "<SI>", "<DLE>", "<DC1>", "<DC2>", "<DC3>", "<DC4>", "<NAK>", |
| "<SYN>","<ETB>", "<CAN>", "<EM>", "<SUB>", "<ESC>", "<IS4>", "<IS3>", |
| "<IS2>", "<IS1>", |
| "<space>", |
| /* ! */ "<exclamation-mark>", |
| /* " */ "<quotation-mark>", |
| /* # */ "<number-sign>", |
| /* $ */ "<dollar-sign>", |
| /* % */ "<percent-sign>", |
| /* & */ "<ampersand>", |
| /* ' */ "<apostrophe>", |
| /* ( */ "<left-parenthesis>", |
| /* ) */ "<right-parenthesis>", |
| /* * */ "<asterisk>", |
| /* + */ "<plus-sign>", |
| /* , */ "<comma>", |
| /* - */ "<hyphen>", |
| /* . */ "<period>", |
| /* / */ "<slash>", |
| /* 0 */ "<zero>", |
| /* 1 */ "<one>", |
| /* 2 */ "<two>", |
| /* 3 */ "<three>", |
| /* 4 */ "<four>", |
| /* 5 */ "<five>", |
| /* 6 */ "<six>", |
| /* 7 */ "<seven>", |
| /* 8 */ "<eight>", |
| /* 9 */ "<nine>", |
| /* : */ "<colon>", |
| /* ; */ "<semicolon>", |
| /* < */ "<less-than-sign>", |
| /* = */ "<equals-sign>", |
| /* > */ "<greater-than-sign>", |
| /* ? */ "<question-mark>", |
| /* @ */ "<commercial-at>", |
| "<A>", "<B>", "<C>", "<D>", "<E>", "<F>", "<G>", "<H>", "<I>", "<J>", |
| "<K>", "<L>", "<M>", "<N>", "<O>", "<P>", "<Q>", "<R>", "<S>", "<T>", |
| "<U>", "<V>", "<W>", "<X>", "<Y>", "<Z>", |
| /* [ */ "<left-square-bracket>", |
| /* \ */ "<backslash>", |
| /* ] */ "<right-square-bracket>", |
| /* ^ */ "<circumflex>", |
| /* _ */ "<underscore>", |
| /* ` */ "<grave-accent>", |
| "<a>", "<b>", "<c>", "<d>", "<e>", "<f>", "<g>", "<h>", "<i>", "<j>", |
| "<k>", "<l>", "<m>", "<n>", "<o>", "<p>", "<q>", "<r>", "<s>", "<t>", |
| "<u>", "<v>", "<w>", "<x>", "<y>", "<z>", |
| /* { */ "<left-brace>", |
| /* | */ "<vertical-line>", |
| /* } */ "<right-brace>", |
| /* ~ */ "<tilde>", |
| "<DEL>" |
| }; |
| |
| if (str) { |
| // write out `str' using the charmap above |
| for (; *str; ++str) { |
| const unsigned char uc = _RWSTD_STATIC_CAST (unsigned char, *str); |
| |
| if (uc < sizeof charmap / sizeof *charmap) |
| fprintf (fp, "%s", charmap [uc]); |
| else |
| fprintf (fp, "<U%04X>", uc); |
| } |
| } |
| else { |
| |
| #ifndef _WIN32 |
| const char* const codeset = nl_langinfo (CODESET); |
| #else |
| // FIXME: determine the current code page |
| const char* const codeset = "UTF-8"; |
| #endif // _WIN32 |
| |
| fprintf (fp, "<code_set_name> \"%s\"\n", codeset); |
| fprintf (fp, "<mb_cur_max> 1\n"); |
| fprintf (fp, "<mb_cur_min> 1\n"); |
| |
| fprintf (fp, "CHARMAP\n"); |
| |
| // write out the charmap above |
| for (unsigned i = 0; i != sizeof charmap / sizeof *charmap; ++i) { |
| fprintf (fp, "%s \\x%02x\n", charmap [i], i); |
| } |
| |
| // write out duplicate symbolic names to prevent warnings |
| fprintf (fp, "<alert> \\x%02x\n", '\a'); |
| fprintf (fp, "<hyphen-minus> \\x%02x\n", '-'); |
| fprintf (fp, "<full-stop> \\x%02x\n", '.'); |
| fprintf (fp, "<solidus> \\x%02x\n", '/'); |
| fprintf (fp, "<reverse-solidus> \\x%02x\n", '\\'); |
| fprintf (fp, "<circumflex-accent> \\x%02x\n", '^'); |
| fprintf (fp, "<underline> \\x%02x\n", '_'); |
| fprintf (fp, "<low-line> \\x%02x\n", '_'); |
| fprintf (fp, "<left-curly-bracket> \\x%02x\n", '{'); |
| fprintf (fp, "<right-curly-bracket> \\x%02x\n", '}'); |
| |
| fprintf (fp, "END CHARMAP\n"); |
| } |
| } |
| |
| |
| _TEST_EXPORT |
| const char* rw_tmpnam (char *buf) |
| { |
| #ifndef _RWSTD_NO_MKSTEMP |
| # define TMP_TEMPLATE "tmpfile-XXXXXX" |
| |
| if (!buf) { |
| static char fname_buf [sizeof (P_tmpdir) + sizeof (TMP_TEMPLATE)]; |
| |
| buf = fname_buf; |
| *buf = '\0'; |
| } |
| |
| if ('\0' == *buf) { |
| // copy the template to the buffer; make sure there is exactly |
| // one path separator character between P_tmpdir and the file |
| // name template (it doesn't really matter how many there are |
| // as long as it's at least one, but one looks better than two |
| // in diagnostic messages) |
| size_t len = sizeof (P_tmpdir) - 1; |
| |
| memcpy (buf, P_tmpdir, len); |
| if (_RWSTD_PATH_SEP != buf [len - 1]) |
| buf [len++] = _RWSTD_PATH_SEP; |
| |
| memcpy (buf + len, TMP_TEMPLATE, sizeof TMP_TEMPLATE); |
| } |
| |
| // prevent annoying glibc warnings (issued by the linker): |
| // the use of `tmpnam' is dangerous, better use `mkstemp' |
| |
| const int fd = mkstemp (buf); |
| |
| if (-1 == fd) { |
| fprintf (stderr, "%s:%d: mkstemp(\"%s\") failed: %s\n", |
| __FILE__, __LINE__, buf, strerror (errno)); |
| return 0; |
| } |
| |
| close (fd); |
| |
| const char* const fname = buf; |
| |
| # undef TMP_TEMPLATE |
| #else // if defined (_RWSTD_NO_MKSTEMP) |
| |
| # ifdef _WIN32 |
| |
| // create a temporary file name |
| char* fname = tempnam (P_tmpdir, ".rwtest-tmp"); |
| |
| if (fname) { |
| |
| static char tmpbuf [256]; |
| |
| if (0 == buf) |
| buf = tmpbuf; |
| |
| _RWSTD_ASSERT (strlen (fname) < sizeof (tmpbuf)); |
| |
| // copy the generated temporary file name to the provided buffer |
| strcpy (buf, fname); |
| |
| // free the storage allocated by tempnam() |
| free (fname); |
| fname = buf; |
| } |
| else { |
| fprintf (stderr, "%s:%d: tempnam(\"%s\", \"%s\") failed: %s\n", |
| __FILE__, __LINE__, |
| P_tmpdir, ".rwtest-tmp", strerror (errno)); |
| } |
| |
| # else |
| # if defined (__hpux) && defined (_RWSTD_REENTRANT) |
| |
| // on HP-UX, in reentrant mode, tmpnam(0) fails by design |
| |
| if (!buf) { |
| static char tmpbuf [L_tmpnam]; |
| buf = tmpbuf; |
| *buf = '\0'; |
| } |
| |
| # endif // __hpux && _REENTRANT |
| |
| const char* const fname = tmpnam (buf); |
| |
| if (!fname) |
| fprintf (stderr, "%s:%d: tmpnam(\"%s\") failed: %s\n", |
| __FILE__, __LINE__, buf, strerror (errno)); |
| |
| # endif // _WIN32 |
| #endif // _RWSTD_NO_MKSTEMP |
| |
| return fname; |
| } |
| |
| |
| _TEST_EXPORT |
| size_t rw_fsize (const char *fname) |
| { |
| #ifdef _WIN32 |
| |
| // note: both method of obtaining the size of a file |
| // just written by a process may fail (i.e., the size |
| // will be 0) |
| |
| # if 1 |
| |
| struct _stat sb; |
| |
| if (-1 == _stat (fname, &sb)) |
| return _RWSTD_SIZE_MAX; |
| |
| return sb.st_size; |
| |
| # else |
| |
| // #include <windows.h> for CreateFile() and GetFileSize() |
| const HANDLE hfile = |
| CreateFile (fname, |
| GENERIC_READ, |
| 0, // dwShareMode, |
| 0, // lpSecurityAttributes, |
| OPEN_EXISTING, // dwCreationDisposition, |
| FILE_ATTRIBUTE_NORMAL, // dwFlagsAndAttributes, |
| 0); // hTemplateFile |
| |
| if (INVALID_HANDLE_VALUE == hfile) |
| return _RWSTD_SIZE_MAX; |
| |
| const size_t size = GetFileSize (hfile, 0); |
| |
| CloseHandle (hfile); |
| |
| return size; |
| |
| # endif // 0/1 |
| |
| #else // ifndef _WIN32 |
| |
| struct stat sb; |
| |
| if (stat (fname, &sb) == -1) |
| return _RWSTD_SIZE_MAX; |
| |
| return sb.st_size; |
| |
| #endif // _WIN32 |
| |
| } |
| |
| |
| _TEST_EXPORT |
| void* rw_fread (const char *fname, |
| size_t *size /* = 0 */, |
| const char *mode /* = "r" */) |
| { |
| // buffer and size supplied by the user |
| static char* usrbuf = 0; |
| static size_t usrsize = 0; |
| |
| // when called with 0 file name and non-0 size, set the static |
| // local buffer for the functions to use in subsequent calls |
| // with non-0 `fname' instead of dynamically allocating a new |
| // buffer |
| if (!fname && size) { |
| |
| char* const oldbuf = usrbuf; |
| |
| usrbuf = _RWSTD_CONST_CAST (char*, mode); |
| usrsize = usrbuf ? *size : 0; |
| |
| return oldbuf; |
| } |
| |
| static char buffer [1024]; |
| static char* buf = usrbuf ? usrbuf : buffer; |
| static size_t bufsize = usrbuf ? usrsize : sizeof buffer; |
| |
| // open the file in the specified mode |
| FILE* const fp = fopen (fname, mode); |
| |
| if (!fp) |
| return 0; |
| |
| for (char *bufend = buf; ; ) { |
| // compute the total number of bytes read from the file so far |
| // and the number of bytes that are still available in the buffer |
| const size_t bytes_read = size_t (bufend - buf); |
| const size_t bytes_avail = bufsize - bytes_read; |
| |
| // try to read the contents of the file into the buffer |
| const size_t nbytes = fread (bufend, 1, bytes_avail, fp); |
| |
| if (0 == nbytes) { |
| *bufend = '\0'; |
| |
| // store the number of bytes read |
| if (size) |
| *size = bytes_read; |
| |
| break; |
| } |
| |
| if (nbytes == bytes_avail) { |
| |
| // do not grow user-specified buffer |
| if (buf == usrbuf) |
| break; |
| |
| const size_t newsize = (bufsize + 1) * 2; |
| |
| // increase the size of the buffer and continue reading |
| char *tmp = new char [newsize]; |
| memcpy (tmp, buf, bufsize); |
| |
| // deallocate buffer only if it's been |
| // previously dynamically allocated |
| if (buf != buffer) |
| delete[] buf; |
| |
| bufsize = newsize; |
| bufend = tmp + bytes_read; |
| buf = tmp; |
| } |
| |
| bufend += nbytes; |
| } |
| |
| fclose (fp); |
| |
| return buf; |
| } |
| |
| |
| _TEST_EXPORT |
| size_t rw_fwrite (const char *fname, |
| const void *buf, |
| size_t size /* = -1 */, |
| const char *mode /* = "w" */) |
| { |
| FILE *fp = 0; |
| |
| if (buf) |
| fp = fopen (fname, mode); |
| else { |
| remove (fname); |
| return 0; |
| } |
| |
| if (!fp) |
| return size_t (-1); |
| |
| if (size_t (-1) == size) |
| size = strlen (_RWSTD_STATIC_CAST (const char*, buf)); |
| |
| // fwrite() returns the number of elements successfully written |
| // set it up so that the number of elements == the number of bytes |
| const size_t nbytes = fwrite (buf, 1 /* byte */, size, fp); |
| |
| fclose (fp); |
| |
| return nbytes; |
| } |
| |
| |
| /************************************************************************/ |
| |
| // get the file descriptor that will be returned by the next call |
| // to creat() or open() (used to detect file descriptor leaks) |
| _TEST_EXPORT int |
| rw_nextfd (int *count) |
| { |
| if (count) { |
| |
| *count = 0; |
| |
| #ifdef _WIN32 |
| |
| # ifdef _MSC_VER |
| // save the report mode and disable "Invalid file descriptor" |
| // CRT assertions from _commit() |
| const int prev_mode = _CrtSetReportMode (_CRT_ASSERT, 0); |
| # endif |
| |
| for (int i = 0; i != 256; ++i) { |
| |
| const int ret = _commit (i); |
| |
| if (-1 != ret || EBADF != errno) |
| ++*count; |
| } |
| |
| # ifdef _MSC_VER |
| // restore the previous mode |
| if (-1 != prev_mode) |
| _CrtSetReportMode (_CRT_ASSERT, prev_mode); |
| # endif |
| |
| #else // if not Windoze |
| |
| for (int i = 0; i != 256; ++i) { |
| if (-1 != fcntl (i, F_GETFD)) |
| ++*count; |
| } |
| |
| #endif // _WIN32 |
| |
| } |
| |
| const int fd = open (DEV_NULL, O_RDONLY); |
| |
| close (fd); |
| |
| return fd; |
| } |
