file.c

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/* -- Includes -- */
/* system libraries */
#include <stdio.h>   /* Standard input/output definitions */
#include <string.h>  /* String function definitions */
#include <stdlib.h>
#include <time.h>
/* project libraries */
#include "file.h"
#include "def.h"

/* -- Defines -- */

/* -- Functions -- */

file_t *file_open(const char *name, const char *mode)
{
    file_t *fs = (file_t *) malloc(sizeof(file_t)); // File structure

    memset(fs->name, 0, sizeof(fs->name));
    memcpy(fs->name, name, strlen(name)); // Set name

    // Open file
    fs->fd = fopen(fs->name, mode);

    // Return file structure
    return fs;
}

file_t *file_open_time(const char *name, const char *ext, const char *mode)
{
    file_t *fs = (file_t *) malloc(sizeof(file_t));; // File structure

    // Time variables
    time_t now;
    struct tm *gmt;
    char formatted_gmt [32];

    // Get time
    now = time (NULL);
    gmt = gmtime (&now);

    // Format time
    strftime(formatted_gmt, sizeof(formatted_gmt), "%d%m%y_%H%M%S", gmt);
    // Set name
    sprintf(fs->name,"%s_%s.%s", name, formatted_gmt, ext);

    // Open file
    fs->fd = fopen(fs->name, mode);

    // Return file structure
    return fs;
}

int file_close(file_t *fs)
{
    int res;

    // Close File
    res = fclose(fs->fd);
    // Free memory
    free(fs);

    return res;
}

int file_write(file_t *fs, char *data, int len)
{
    // Write to file
    return fwrite(data, 1, len, fs->fd);;
}

int file_write_direct(file_t *fs, char *data, int len)
{
    int res;

    // Write to file
    res = fwrite(data, 1, len, fs->fd);
    // Flush data
    if(fflush(fs->fd) == s_OK)
        return res;
    else
        return s_ERROR;
}

int file_flush(file_t *fs)
{
    // Flush data
    return fflush(fs->fd);
}

int file_readln(file_t *fs, char *buffer, size_t buflen)
{
    char *end = buffer + buflen - 1; // Allow space for null terminator
    char *dst = buffer;
    int c;

    while ((c = getc(fs->fd)) != EOF && c != '\n' && dst < end)
    {
        *dst++ = c;
    }
    *dst = '\0';

    return((c == EOF && dst == buffer) ? EOF : dst - buffer);
}