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Diffstat (limited to 'Radio/HW/BladeRF/src/helpers/file.h')
-rw-r--r-- | Radio/HW/BladeRF/src/helpers/file.h | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/Radio/HW/BladeRF/src/helpers/file.h b/Radio/HW/BladeRF/src/helpers/file.h new file mode 100644 index 0000000..a1db20a --- /dev/null +++ b/Radio/HW/BladeRF/src/helpers/file.h @@ -0,0 +1,97 @@ +/** + * @file file.h + * + * @brief Wrappers around misc. file operations. + * + * These are collected here so that they may easily be dummied out for NIOS + * headless builds in the future. + * + * This file is part of the bladeRF project: + * http://www.github.com/nuand/bladeRF + * + * Copyright (C) 2013 Nuand LLC + * Copyright (C) 2013 Daniel Gröber <dxld ÄT darkboxed DOT org> + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library 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 + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef HELPERS_FILE_H_ +#define HELPERS_FILE_H_ + +#include <stdint.h> +#include <stdio.h> + +/** + * Read file contents into a buffer allocated internally and returned to the + * caller through `buf'. + * + * The caller is responsible for freeing the allocated buffer + * + * @param[in] filename File open + * @param[out] buf Upon success, this will point to a heap-allocated + * buffer containing the file contents + * @parma[out] size Upon success, this will be updated to reflect the + * size of the buffered file + * + * @return 0 on success, negative BLADERF_ERR_* value on failure + */ +int file_read_buffer(const char *filename, uint8_t **buf, size_t *size); + +/** + * Write to an open file stream. + * + * @param[in] f Open file stream. + * @param[in] buf Data to write to the stream. + * @parma[in] len Number of bytes to write to the stream. + * + * @return 0 on success, negative BLADERF_ERR_* value on failure + */ +int file_write(FILE *f, uint8_t *buf, size_t len); + +/** + * Read data from an open file stream. + * + * @param[in] f Open file stream. + * @param[out] buf Buffer to fill with data read. + * @parma[in] len Number of bytes to read. If EOF is encountered + * before this many bytes have been read will return + * an error. + * + * @return 0 on success, negative BLADERF_ERR_* value on failure + */ +int file_read(FILE *f, char *buf, size_t len); + +/** + * Determine the size of an open file stream. + * + * @param[in] f Open file stream. + * + * @return positive size of file on success, negative BLADERF_ERR_* value on + * failure + */ +ssize_t file_size(FILE *f); + +/** + * Search for the specified filename in bladeRF config directories. If found, + * the full path is returned. There is a chance that the file will be removed + * in between this call indicating it exists and attempting to open it. + * + * @param[in] filename File to search for + * + * @return Full path if the file is found, NULL otherwise. + */ +char *file_find(const char *filename); + +#endif |