diff options
author | David M. Lee <dlee@digium.com> | 2013-01-07 14:24:28 -0600 |
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committer | David M. Lee <dlee@digium.com> | 2013-01-07 14:24:28 -0600 |
commit | f3ab456a17af1c89a6e3be4d20c5944853df1cb0 (patch) | |
tree | d00e1a332cd038a6d906a1ea0ac91e1a4458e617 /pjlib/src/pj/file_io_win32.c |
Import pjproject-2.0.1
Diffstat (limited to 'pjlib/src/pj/file_io_win32.c')
-rw-r--r-- | pjlib/src/pj/file_io_win32.c | 240 |
1 files changed, 240 insertions, 0 deletions
diff --git a/pjlib/src/pj/file_io_win32.c b/pjlib/src/pj/file_io_win32.c new file mode 100644 index 0000000..42ccd70 --- /dev/null +++ b/pjlib/src/pj/file_io_win32.c @@ -0,0 +1,240 @@ +/* $Id: file_io_win32.c 3553 2011-05-05 06:14:19Z nanang $ */ +/* + * Copyright (C) 2008-2011 Teluu Inc. (http://www.teluu.com) + * Copyright (C) 2003-2008 Benny Prijono <benny@prijono.org> + * + * 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, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ +#include <pj/file_io.h> +#include <pj/unicode.h> +#include <pj/errno.h> +#include <pj/assert.h> + +#include <windows.h> + +#ifndef INVALID_SET_FILE_POINTER +# define INVALID_SET_FILE_POINTER ((DWORD)-1) +#endif + +/** + * Check for end-of-file condition on the specified descriptor. + * + * @param fd The file descriptor. + * @param access The desired access. + * + * @return Non-zero if file is EOF. + */ +PJ_DECL(pj_bool_t) pj_file_eof(pj_oshandle_t fd, + enum pj_file_access access); + + +PJ_DEF(pj_status_t) pj_file_open( pj_pool_t *pool, + const char *pathname, + unsigned flags, + pj_oshandle_t *fd) +{ + PJ_DECL_UNICODE_TEMP_BUF(wpathname,256) + HANDLE hFile; + DWORD dwDesiredAccess = 0; + DWORD dwShareMode = 0; + DWORD dwCreationDisposition = 0; + DWORD dwFlagsAndAttributes = 0; + + PJ_UNUSED_ARG(pool); + + PJ_ASSERT_RETURN(pathname!=NULL, PJ_EINVAL); + + if ((flags & PJ_O_WRONLY) == PJ_O_WRONLY) { + dwDesiredAccess |= GENERIC_WRITE; + if ((flags & PJ_O_APPEND) == PJ_O_APPEND) { +#if !defined(PJ_WIN32_WINCE) || !PJ_WIN32_WINCE + /* FILE_APPEND_DATA is invalid on WM2003 and WM5, but it seems + * to be working on WM6. All are tested on emulator though. + * Removing this also seem to work (i.e. data is appended), so + * I guess this flag is "optional". + * See http://trac.pjsip.org/repos/ticket/825 + */ + dwDesiredAccess |= FILE_APPEND_DATA; +#endif + dwCreationDisposition |= OPEN_ALWAYS; + } else { + dwDesiredAccess &= ~(FILE_APPEND_DATA); + dwCreationDisposition |= CREATE_ALWAYS; + } + } + if ((flags & PJ_O_RDONLY) == PJ_O_RDONLY) { + dwDesiredAccess |= GENERIC_READ; + if (flags == PJ_O_RDONLY) + dwCreationDisposition |= OPEN_EXISTING; + } + + if (dwDesiredAccess == 0) { + pj_assert(!"Invalid file open flags"); + return PJ_EINVAL; + } + + dwShareMode = FILE_SHARE_READ | FILE_SHARE_WRITE; + dwFlagsAndAttributes = FILE_ATTRIBUTE_NORMAL; + + hFile = CreateFile(PJ_STRING_TO_NATIVE(pathname,wpathname,sizeof(wpathname)), + dwDesiredAccess, dwShareMode, NULL, + dwCreationDisposition, dwFlagsAndAttributes, NULL); + if (hFile == INVALID_HANDLE_VALUE) { + *fd = 0; + return PJ_RETURN_OS_ERROR(GetLastError()); + } + + if ((flags & PJ_O_APPEND) == PJ_O_APPEND) { + pj_status_t status; + + status = pj_file_setpos(hFile, 0, PJ_SEEK_END); + if (status != PJ_SUCCESS) { + pj_file_close(hFile); + return status; + } + } + + *fd = hFile; + return PJ_SUCCESS; +} + +PJ_DEF(pj_status_t) pj_file_close(pj_oshandle_t fd) +{ + if (CloseHandle(fd)==0) + return PJ_RETURN_OS_ERROR(GetLastError()); + return PJ_SUCCESS; +} + +PJ_DEF(pj_status_t) pj_file_write( pj_oshandle_t fd, + const void *data, + pj_ssize_t *size) +{ + BOOL rc; + DWORD bytesWritten; + + rc = WriteFile(fd, data, *size, &bytesWritten, NULL); + if (!rc) { + *size = -1; + return PJ_RETURN_OS_ERROR(GetLastError()); + } + + *size = bytesWritten; + return PJ_SUCCESS; +} + +PJ_DEF(pj_status_t) pj_file_read( pj_oshandle_t fd, + void *data, + pj_ssize_t *size) +{ + BOOL rc; + DWORD bytesRead; + + rc = ReadFile(fd, data, *size, &bytesRead, NULL); + if (!rc) { + *size = -1; + return PJ_RETURN_OS_ERROR(GetLastError()); + } + + *size = bytesRead; + return PJ_SUCCESS; +} + +/* +PJ_DEF(pj_bool_t) pj_file_eof(pj_oshandle_t fd, enum pj_file_access access) +{ + BOOL rc; + DWORD dummy = 0, bytes; + DWORD dwStatus; + + if ((access & PJ_O_RDONLY) == PJ_O_RDONLY) { + rc = ReadFile(fd, &dummy, 0, &bytes, NULL); + } else if ((access & PJ_O_WRONLY) == PJ_O_WRONLY) { + rc = WriteFile(fd, &dummy, 0, &bytes, NULL); + } else { + pj_assert(!"Invalid access"); + return PJ_TRUE; + } + + dwStatus = GetLastError(); + if (dwStatus==ERROR_HANDLE_EOF) + return PJ_TRUE; + + return 0; +} +*/ + +PJ_DEF(pj_status_t) pj_file_setpos( pj_oshandle_t fd, + pj_off_t offset, + enum pj_file_seek_type whence) +{ + DWORD dwMoveMethod; + DWORD dwNewPos; + LONG hi32; + + if (whence == PJ_SEEK_SET) + dwMoveMethod = FILE_BEGIN; + else if (whence == PJ_SEEK_CUR) + dwMoveMethod = FILE_CURRENT; + else if (whence == PJ_SEEK_END) + dwMoveMethod = FILE_END; + else { + pj_assert(!"Invalid whence in file_setpos"); + return PJ_EINVAL; + } + + hi32 = (LONG)(offset >> 32); + dwNewPos = SetFilePointer(fd, (long)offset, &hi32, dwMoveMethod); + if (dwNewPos == (DWORD)INVALID_SET_FILE_POINTER) { + DWORD dwStatus = GetLastError(); + if (dwStatus != 0) + return PJ_RETURN_OS_ERROR(dwStatus); + /* dwNewPos actually is not an error. */ + } + + return PJ_SUCCESS; +} + +PJ_DEF(pj_status_t) pj_file_getpos( pj_oshandle_t fd, + pj_off_t *pos) +{ + LONG hi32 = 0; + DWORD lo32; + + lo32 = SetFilePointer(fd, 0, &hi32, FILE_CURRENT); + if (lo32 == (DWORD)INVALID_SET_FILE_POINTER) { + DWORD dwStatus = GetLastError(); + if (dwStatus != 0) + return PJ_RETURN_OS_ERROR(dwStatus); + } + + *pos = hi32; + *pos = (*pos << 32) + lo32; + return PJ_SUCCESS; +} + +PJ_DEF(pj_status_t) pj_file_flush(pj_oshandle_t fd) +{ + BOOL rc; + + rc = FlushFileBuffers(fd); + + if (!rc) { + DWORD dwStatus = GetLastError(); + if (dwStatus != 0) + return PJ_RETURN_OS_ERROR(dwStatus); + } + + return PJ_SUCCESS; +} |