mirror of
https://github.com/eclipse-threadx/filex.git
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139 lines
6.4 KiB
C
139 lines
6.4 KiB
C
/***************************************************************************
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* Copyright (c) 2024 Microsoft Corporation
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*
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* This program and the accompanying materials are made available under the
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* terms of the MIT License which is available at
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* https://opensource.org/licenses/MIT.
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*
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* SPDX-License-Identifier: MIT
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**************************************************************************/
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/**************************************************************************/
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/**************************************************************************/
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/** */
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/** FileX Component */
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/** */
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/** Directory */
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/** */
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/**************************************************************************/
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/**************************************************************************/
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#define FX_SOURCE_CODE
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/* Include necessary system files. */
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#include "fx_api.h"
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#include "fx_directory.h"
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/**************************************************************************/
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/* */
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/* FUNCTION RELEASE */
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/* */
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/* _fx_directory_long_name_get_extended PORTABLE C */
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/* 6.1 */
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/* AUTHOR */
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/* */
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/* William E. Lamie, Microsoft Corporation */
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/* */
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/* DESCRIPTION */
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/* */
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/* This function gets the long file name via the supplied short file */
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/* name. If there is no long file name, the short file name will be */
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/* returned. */
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/* */
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/* INPUT */
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/* */
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/* media_ptr Media control block pointer */
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/* short_file_name Pointer to short (8.3) name */
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/* long_file_name Pointer to long (max 255) name*/
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/* long_file_name_buffer_length Buffer length for long name */
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/* */
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/* OUTPUT */
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/* */
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/* return status */
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/* */
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/* CALLS */
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/* */
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/* _fx_directory_search Search for the file name in */
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/* */
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/* CALLED BY */
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/* */
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/* Application Code */
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/* */
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/* RELEASE HISTORY */
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/* */
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/* DATE NAME DESCRIPTION */
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/* */
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/* 05-19-2020 William E. Lamie Initial Version 6.0 */
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/* 09-30-2020 William E. Lamie Modified comment(s), */
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/* resulting in version 6.1 */
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/* */
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/**************************************************************************/
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UINT _fx_directory_long_name_get_extended(FX_MEDIA *media_ptr, CHAR *short_file_name, CHAR *long_file_name, UINT long_file_name_buffer_length)
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{
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UINT status;
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UINT i;
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FX_DIR_ENTRY dir_entry;
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/* Setup pointer to media name buffer. */
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dir_entry.fx_dir_entry_name = media_ptr -> fx_media_name_buffer + FX_MAX_LONG_NAME_LEN;
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/* Clear the short name string. */
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dir_entry.fx_dir_entry_short_name[0] = 0;
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/* If trace is enabled, insert this event into the trace buffer. */
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FX_TRACE_IN_LINE_INSERT(FX_TRACE_DIRECTORY_LONG_NAME_GET, media_ptr, short_file_name, long_file_name, 0, FX_TRACE_DIRECTORY_EVENTS, 0, 0)
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/* Protect against other threads accessing the media. */
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FX_PROTECT
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/* Search the system for the supplied short directory name. */
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status = _fx_directory_search(media_ptr, short_file_name, &dir_entry, FX_NULL, FX_NULL);
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/* Determine if the search was successful. */
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if (status != FX_SUCCESS)
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{
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/* Release media protection. */
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FX_UNPROTECT
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/* Return the error code. */
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return(status);
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}
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/* Copy the long name portion into the destination string. */
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i = 0;
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while ((i < (FX_MAX_LONG_NAME_LEN - 1)) && (dir_entry.fx_dir_entry_name[i]) && (i < (long_file_name_buffer_length - 1)))
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{
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/* Copy a character of the long name into the destination name. */
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long_file_name[i] = dir_entry.fx_dir_entry_name[i];
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/* Move to next character. */
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i++;
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}
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/* Ensure the long file name is NULL terminated. */
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long_file_name[i] = FX_NULL;
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/* Check if the buffer is too short for the name. */
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if ((i == (long_file_name_buffer_length - 1)) && (dir_entry.fx_dir_entry_name[i]))
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{
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/* Buffer too short, return error. */
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status = FX_BUFFER_ERROR;
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}
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/* Release media protection. */
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FX_UNPROTECT
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/* Return the completion status. */
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return(status);
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}
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