Index: src/Makefile ================================================================== --- src/Makefile +++ src/Makefile @@ -5,10 +5,11 @@ SRCS = array.c \ bool.c \ box.c \ class.c \ double.c \ + file.c \ int.c \ map.c \ object.c \ range.c \ refpool.c \ ADDED src/file.c Index: src/file.c ================================================================== --- /dev/null +++ src/file.c @@ -0,0 +1,174 @@ +/* + * Copyright (c) 2012, Jonathan Schleifer + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#include +#include + +#include +#include + +#include "stream.h" +#include "file.h" + +#ifndef O_BINARY +# define O_BINARY 0 +#endif + +#ifndef S_IRGRP +# define S_IRGRP 0 +#endif +#ifndef S_IROTH +# define S_IROTH 0 +#endif +#ifndef S_IWGRP +# define S_IWGRP 0 +#endif +#ifndef S_IWOTH +# define S_IWOTH 0 +#endif + +#define DEFAULT_MODE S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH + +struct CFWFile { + CFWStream stream; + int fd; + bool eof; +}; + +static int +parse_mode(const char *mode) +{ + if (!strcmp(mode, "r")) + return O_RDONLY; + if (!strcmp(mode, "rb")) + return O_RDONLY | O_BINARY; + if (!strcmp(mode, "r+")) + return O_RDWR; + if (!strcmp(mode, "rb+") || !strcmp(mode, "r+b")) + return O_RDWR | O_BINARY; + if (!strcmp(mode, "w")) + return O_WRONLY | O_CREAT | O_TRUNC; + if (!strcmp(mode, "wb")) + return O_WRONLY | O_CREAT | O_TRUNC | O_BINARY; + if (!strcmp(mode, "w+")) + return O_RDWR | O_CREAT | O_TRUNC; + if (!strcmp(mode, "wb+") || !strcmp(mode, "w+b")) + return O_RDWR | O_CREAT | O_TRUNC | O_BINARY; + if (!strcmp(mode, "a")) + return O_WRONLY | O_CREAT | O_APPEND; + if (!strcmp(mode, "ab")) + return O_WRONLY | O_CREAT | O_APPEND | O_BINARY; + if (!strcmp(mode, "a+")) + return O_RDWR | O_CREAT | O_APPEND; + if (!strcmp(mode, "ab+") || !strcmp(mode, "a+b")) + return O_RDWR | O_CREAT | O_APPEND | O_BINARY; + + return -1; +} + +static ssize_t +file_read(void *ptr, void *buf, size_t len) +{ + CFWFile *file = ptr; + ssize_t ret; + + if ((ret = read(file->fd, buf, len)) == 0) + file->eof = true; + + return ret; +} + +static bool +file_write(void *ptr, const void *buf, size_t len) +{ + CFWFile *file = ptr; + ssize_t ret; + + if ((ret = write(file->fd, buf, len)) < len) + return false; + + return true; +} + +static bool +file_eof(void *ptr) +{ + CFWFile *file = ptr; + + return file->eof; +} + +static void +file_close(void *ptr) +{ + CFWFile *file = ptr; + + close(file->fd); +} + +struct cfw_stream_ops stream_ops = { + .read = file_read, + .write = file_write, + .eof = file_eof, + .close = file_close +}; + +static bool +ctor(void *ptr, va_list args) +{ + CFWFile *file = ptr; + const char *path = va_arg(args, const char*); + const char *mode = va_arg(args, const char*); + int flags; + + /* Make sure we have a valid pointer in case we error out */ + file->stream.ops = NULL; + file->eof = false; + + if ((flags = parse_mode(mode)) == -1) + return false; + + if ((file->fd = open(path, flags, DEFAULT_MODE)) == -1) + return false; + + file->stream.ops = &stream_ops; + + return true; +} + +static void +dtor(void *ptr) +{ + cfw_stream_close(ptr); +} + +static CFWClass class = { + .name = "CFWFile", + .size = sizeof(CFWFile), + .ctor = ctor, + .dtor = dtor +}; +CFWClass *cfw_file = &class; ADDED src/file.h Index: src/file.h ================================================================== --- /dev/null +++ src/file.h @@ -0,0 +1,36 @@ +/* + * Copyright (c) 2012, Jonathan Schleifer + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef __COREFW_FILE_H__ +#define __COREFW_FILE_H__ + +#include "class.h" + +typedef struct CFWFile CFWFile; + +extern CFWClass *cfw_file; + +#endif