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Source/M300/PSDK_Qt/util_file.c

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+/**
+ ********************************************************************
+ * @file    util_file.c
+ * @brief
+ *
+ * @copyright (c) 2021 DJI. All rights reserved.
+ *
+ * All information contained herein is, and remains, the property of DJI.
+ * The intellectual and technical concepts contained herein are proprietary
+ * to DJI and may be covered by U.S. and foreign patents, patents in process,
+ * and protected by trade secret or copyright law.  Dissemination of this
+ * information, including but not limited to data and other proprietary
+ * material(s) incorporated within the information, in any form, is strictly
+ * prohibited without the express written consent of DJI.
+ *
+ * If you receive this source code without DJI’s authorization, you may not
+ * further disseminate the information, and you must immediately remove the
+ * source code and notify DJI of its removal. DJI reserves the right to pursue
+ * legal actions against you for any loss(es) or damage(s) caused by your
+ * failure to do so.
+ *
+ *********************************************************************
+ */
+
+/* Includes ------------------------------------------------------------------*/
+#ifdef SYSTEM_ARCH_LINUX
+
+#include "util_file.h"
+#include <time.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+/* Private constants ---------------------------------------------------------*/
+
+
+/* Private types -------------------------------------------------------------*/
+
+
+/* Private functions declaration ---------------------------------------------*/
+
+
+/* Private values ------------------------------------------------------------*/
+
+
+/* Exported functions definition ---------------------------------------------*/
+T_DjiReturnCode UtilFile_GetCreateTime(const char *filePath, T_UtilFileCreateTime *createTime)
+{
+    struct stat st;
+    struct tm *fileTm;
+
+    if (filePath == NULL) {
+        return DJI_ERROR_SYSTEM_MODULE_CODE_INVALID_PARAMETER;
+    }
+
+    if (stat(filePath, &st) != 0) {
+        return DJI_ERROR_SYSTEM_MODULE_CODE_SYSTEM_ERROR;
+    }
+
+    fileTm = localtime(&(st.st_ctime));
+    if (fileTm == NULL) {
+        return DJI_ERROR_SYSTEM_MODULE_CODE_SYSTEM_ERROR;
+    }
+
+    createTime->year = fileTm->tm_year + 1900 - 1980;
+    createTime->month = fileTm->tm_mon;
+    createTime->day = fileTm->tm_mday;
+    createTime->hour = fileTm->tm_hour;
+    createTime->minute = fileTm->tm_min;
+    createTime->second = fileTm->tm_sec;
+
+    return DJI_ERROR_SYSTEM_MODULE_CODE_SUCCESS;
+}
+
+T_DjiReturnCode UtilFile_GetFileSizeByPath(const char *filePath, uint32_t *fileSize)
+{
+    struct stat st;
+
+    if (filePath == NULL) {
+        return DJI_ERROR_SYSTEM_MODULE_CODE_INVALID_PARAMETER;
+    }
+
+    if (stat(filePath, &st) != 0) {
+        return DJI_ERROR_SYSTEM_MODULE_CODE_SYSTEM_ERROR;
+    }
+
+    *fileSize = st.st_size;
+
+    return DJI_ERROR_SYSTEM_MODULE_CODE_SUCCESS;
+}
+
+T_DjiReturnCode UtilFile_GetFileDataByPath(const char *filePath, uint32_t offset, uint16_t len,
+                                           uint8_t *data, uint16_t *realLen)
+{
+    FILE *pF;
+    T_DjiReturnCode psdkStat;
+    uint32_t readRtn;
+
+    if (filePath == NULL) {
+        return DJI_ERROR_SYSTEM_MODULE_CODE_INVALID_PARAMETER;
+    }
+
+    pF = fopen(filePath, "rb+");
+    if (pF == NULL) {
+        return DJI_ERROR_SYSTEM_MODULE_CODE_INVALID_PARAMETER;
+    }
+
+    if (fseek(pF, offset, SEEK_SET) != 0) {
+        psdkStat = DJI_ERROR_SYSTEM_MODULE_CODE_SYSTEM_ERROR;
+        goto out;
+    }
+
+    readRtn = fread(data, 1, len, pF);
+    if (readRtn == 0 || readRtn > len) {
+        psdkStat = DJI_ERROR_SYSTEM_MODULE_CODE_SYSTEM_ERROR;
+        goto out;
+    }
+
+    *realLen = readRtn;
+
+    psdkStat = DJI_ERROR_SYSTEM_MODULE_CODE_SUCCESS;
+
+out:
+    fclose(pF);
+
+    return psdkStat;
+}
+
+T_DjiReturnCode UtilFile_Delete(const char *filePath)
+{
+    int ret;
+
+    if (filePath == NULL) {
+        return DJI_ERROR_SYSTEM_MODULE_CODE_INVALID_PARAMETER;
+    }
+
+    ret = unlink(filePath);
+
+    if (ret != 0) {
+        return DJI_ERROR_SYSTEM_MODULE_CODE_SYSTEM_ERROR;
+    } else {
+        return DJI_ERROR_SYSTEM_MODULE_CODE_SUCCESS;
+    }
+}
+
+T_DjiReturnCode UtilFile_GetFileSize(FILE *file, uint32_t *fileSize)
+{
+    int result;
+
+    if (file == NULL) {
+        return DJI_ERROR_SYSTEM_MODULE_CODE_INVALID_PARAMETER;
+    }
+
+    long int curSeek = ftell(file);
+
+    result = fseek(file, 0L, SEEK_END);
+    if (result != 0) {
+        return DJI_ERROR_SYSTEM_MODULE_CODE_UNKNOWN;
+    }
+    *fileSize = ftell(file);
+
+    if (curSeek < 0) {
+        return DJI_ERROR_SYSTEM_MODULE_CODE_INVALID_PARAMETER;
+    }
+
+    result = fseek(file, curSeek, SEEK_SET);
+    if (result != 0) {
+        return DJI_ERROR_SYSTEM_MODULE_CODE_UNKNOWN;
+    }
+
+    return DJI_ERROR_SYSTEM_MODULE_CODE_SUCCESS;
+}
+
+T_DjiReturnCode UtilFile_GetFileData(FILE *file, uint32_t offset, uint16_t len, uint8_t *data, uint16_t *realLen)
+{
+    T_DjiReturnCode psdkStat;
+    uint32_t readRtn;
+
+    if (file == NULL) {
+        psdkStat = DJI_ERROR_SYSTEM_MODULE_CODE_INVALID_PARAMETER;
+        goto out;
+    }
+
+    if (fseek(file, offset, SEEK_SET) != 0) {
+        psdkStat = DJI_ERROR_SYSTEM_MODULE_CODE_SYSTEM_ERROR;
+        goto out;
+    }
+
+    readRtn = fread(data, 1, len, file);
+    if (readRtn == 0 || readRtn > len) {
+        psdkStat = DJI_ERROR_SYSTEM_MODULE_CODE_SYSTEM_ERROR;
+        goto out;
+    }
+
+    *realLen = readRtn;
+
+    psdkStat = DJI_ERROR_SYSTEM_MODULE_CODE_SUCCESS;
+
+out:
+    return psdkStat;
+}
+
+/* Private functions definition-----------------------------------------------*/
+
+#endif
+
+/****************** (C) COPYRIGHT DJI Innovations *****END OF FILE****/