112 lines
2.8 KiB
C
112 lines
2.8 KiB
C
/* Create a database and handel it
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* Created by Jan on 13.12.2024.
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* INPUT: query for previous state
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* linked list of tasks to store
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*
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* OUTPUT:
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* linked list of tasks from file
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* OK
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*
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*
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <time.h>
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#include "planner.h"
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#include "list.h"
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/*
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write a complete linkedlist to a task csv file.
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*/
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void write_linkedlist_to_csv(llist* head, const char* filename) {
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//Open file with write permision
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FILE* file = fopen(filename, "w");
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//if there is no file or a wrong file path you becom an error
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if (file == NULL) {
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perror("Could not open file %s\n", filename);
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}
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else{
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//write the file header
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fprintf(file, "TaskName, Created, Deadline, Priority, Spare\n");
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// Iterate through the linked list and write the data to the CSV
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llist* current = head;
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while (current != NULL) {
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// Write the task data to the CSV file
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fprintf(file, "%s, %lu, %lu, %d, %lu\n",
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task->name,
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task->created,
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task->deadline,
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task->priority,
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task->spare,
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current = current->next;
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}
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fclose(file); // Close the file
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}
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}
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/*
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read a task csv file and write the data in a linked list
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*/
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void write_csv_to_llist(const char* filename) {
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//Open file with read permision
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FILE* file = fopen(filename, "r");
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if (file == NULL) {
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perror("Could not open file %s\n", filename);
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}
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else{
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char line[1024]; //Line Buffer
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int count = 0; //task counter
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llist *list = NULL
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fgets(line, sizeof(line), file); //read and ignore file head
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while (fgets(line, sizeof(line), file)) {
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count++;
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//remove newline sign
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line[strcspn(line, "\n")] = '\0';
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// column slice
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char *taskname = strtok(line, ",");
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char *tsakcreation_dateSTR = strtok(NULL, ",");
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char *tsakdeadline_dateSTR = strtok(NULL, ",");
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char *tsakprioritySTR = strtok(NULL, ",");
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char *tsakspareSTR = strtok(NULL, ",");
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// convert char in integer and date
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unsigned long int taskcreation_date = strtoul(taskcreation_dateSTR,NULL,10);
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unsigned long int taskdeadline_date = strtoul(taskdeadline_dateSTR,NULL,10);
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unsigned long int taskspare = strtoul(taskspareSTR,NULL,10);
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int priority = atoi(prioritySTR);
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//create Task
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Task *task = newTask(taskname, taskcreation_date, taskdeadline_date, taskpriority, taskspare);
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// Insert task into the linked list
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if (list == NULL) {
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// If the list is empty, initialize it with the first task
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list = llistNew(task, cmpTaskN);
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}
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else {
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// Append the task to the linked list
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llistAppend(list, task);
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}
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}
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fclose(file);
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}
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}
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