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How to access file to read and write from Internal storage

Hello Developer,

I need to know how can I read or write to a file that is to be saved in the internal storage of the phone? And also I've go through this documentation ( https://developer.tizen.org/dev-guide/2.4/org.tizen.native.mobile.apireference/group__CAPI__SYSTEM__STORAGE__MODULE.html ) but I found it a bit confusing and unsure how to do a simple read write operation on the file. A simple solution for this problem will be appreciated.

Thank you

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Responses

1 댓글
Mehedi Alamgir

Hi Ashfaq

If you want to read and write text data in a file, use the FILE structure. You can read files in the (/res) folder, but cannot write them. The files in the (/data) folder are available for  both reading and writing. 

Using following two function you can read and write file. 

static char* write_file(const char* filepath, const char* buf)
{
    FILE *fp;
    fp = fopen(filepath, "w");
    fputs(buf, fp);
    fclose(fp);
}

static char* read_file(const char* filepath)
{
    FILE *fp = fopen(filepath, "r");
    if (fp == NULL)
        return NULL;
    fseek(fp, 0, SEEK_END);
    int bufsize = ftell(fp);
    rewind(fp);
    if (bufsize < 1)
        return NULL;
    char *buf = malloc(sizeof(char) * (bufsize));
    memset(buf, '\0', sizeof(buf));
    char str[200];
    while(fgets(str, 200, fp) != NULL) {
        dlog_print(DLOG_ERROR, "tag", "%s", str);
        sprintf(buf + strlen(buf), "%s", str);
    }
    fclose(fp);
    return buf;
}


You can get the absolute path to the application resource directory (/res) using app_get_resource_path() api and and to get absolute path of data directory (/data) use app_get_data_path() api. 


Hope this will help you.
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