SowinskiBraeden/c-schedule-generator
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complete getStudents() - untested to see if results is correct

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SowinskiBraeden committed 2024-09-30 17:17:55 -07:00
1 parent 7980d56a5c
commit d60e8a32fa
1 file changed
+106 -29
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main.c
+106 -29
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@@ -2,34 +2,44 @@
#include <stdlib.h>
#include <string.h>
#include <stdbool.h>
#include <stdint.h>
/*
Using define instead of constants prevents
"Variable modified error"
*/
// Important constants
#define MAX_PUPIL_NUM_LEN 8
#define MAX_COURSE_DES_LEN 50
#define MAX_COURSE_NO_LEN 20
#define MAX_PUPIL_NUM_LEN 8
#define MAX_COURSE_ID_LEN MAX_COURSE_NO_LEN + 4 // 4 includes the underscore and the 3 digit unique number to identify the course
#define TOTAL_BLOCKS 10 // the number of blocks between 2 semesters i.e 8 = 4 blocks per semester, 10 = 5 blocks per semester
#define MAX_REQUEST_ALTS 6
#define CLASSROOMS 40
#define MIN_REQ 18
#define CLASS_CAP 30
#define MAX_STUDENTS CLASS_CAP * CLASSROOMS
#define MAX_CHAR 85 // MAX_PUPIL_NUM_LEN + ',' + MAX_COURSE_NO_LEN + ',' + MAX_COURSE_DES_LEN, + ',' + 5 (5 is the number of characters in the word "FALSE")
// 5 is the length of "FALSE" & 3 is the number of commas per line
#define MAX_CHAR MAX_PUPIL_NUM_LEN + MAX_COURSE_NO_LEN + MAX_COURSE_DES_LEN + 5 + 3
/*** DEFINE CSV READER FUNCTIONS & DATASTRUCTURES ***/
typedef struct {
char pupilNum[MAX_PUPIL_NUM_LEN];
uint32_t pupilNum;
char crsNo[MAX_COURSE_NO_LEN];
char description[MAX_COURSE_DES_LEN];
bool alternate;
} CSV_LINE;
size_t count_lines(char data_dir[]) {
// Dumbass me set this to size_t earlier, forgot that size_t is unsigned and I can't return -1 on failure
int count_lines(char data_dir[]) {
FILE *stream = fopen(data_dir, "r");
if (!stream) {
fputs("Failed to open CSV file", stderr);
return -1;
}
char buff[MAX_CHAR];
size_t counter = 0;
for (;;) {
@@ -64,29 +74,29 @@ CSV_LINE *csvReader(char data_dir[], size_t size) {
int i = 0;
// Read each line in CSV file
while (fgets(buff, sizeof(buff), stream) && i < size) {
while (fgets(buff, sizeof(buff), stream) && i <= size) {
CSV_LINE csv_line;
lines[i] = csv_line;
// Tokenize the line to extract data
char *token = strtok(buff, ",");
if (token) {
strncpy(lines[i].pupilNum, token, MAX_PUPIL_NUM_LEN);
// lines[i].pupilNum[strcspn(lines[i].pupilNum, "\n")] = 0; // Remove newline
}
if (token)
lines[i].pupilNum = atoi(token); // convert string to uint32_t
token = strtok(NULL, ",");
if (token) strncpy(lines[i].crsNo, token, MAX_COURSE_NO_LEN);
if (token)
strncpy(lines[i].crsNo, token, MAX_COURSE_NO_LEN);
token = strtok(NULL, ",");
if (token) strncpy(lines[i].description, token, MAX_COURSE_DES_LEN);
if (token)
strncpy(lines[i].description, token, MAX_COURSE_DES_LEN);
token = strtok(NULL, ",");
if (token) {
char alternate[5];
strncpy(alternate, token, 5);
alternate[strcspn(alternate, "\n")] = 0; // Remove newline
lines[i].alternate = strcmp(alternate, "TRUE") == 0 ? true : false;
lines[i].alternate = !strcmp(alternate, "TRUE") ? true : false;
}
i++;
@@ -101,38 +111,104 @@ CSV_LINE *csvReader(char data_dir[], size_t size) {
typedef struct {
char crsNo[MAX_COURSE_NO_LEN];
char description[MAX_COURSE_DES_LEN];
bool alt;
bool alternate;
} REQUEST;
typedef struct {
char pupilNum[MAX_PUPIL_NUM_LEN];
REQUEST request[TOTAL_BLOCKS + MAX_REQUEST_ALTS];
char schedule[TOTAL_BLOCKS]; // blocks 1 through (TOTAL_BLOCKS / 2) represents the first semester in this array
short expectedClasses;
short classes;
REQUEST remainingAlts[MAX_REQUEST_ALTS];
short studentIndex;
uint32_t pupilNum;
REQUEST *requests;
uint8_t requestsLen;
char **schedule;
uint8_t expectedClasses;
uint8_t classes;
REQUEST *remainingAlts;
uint8_t remainingAltsLen;
uint8_t grade;
} STUDENT;
typedef struct {
char crsNo[MAX_COURSE_NO_LEN];
short requests;
uint16_t requests;
char description[MAX_COURSE_DES_LEN];
short credits;
bool core; // Is this a core class? prioritize this course over alternates
STUDENT students[CLASS_CAP];
uint8_t credits;
char students[CLASS_CAP][sizeof(uint32_t)];
} COURSE;
/*** DEFINE GET FUNCTIONS FOR STUDENTS & COURSES FROM CSV ***/
STUDENT *getStudents(CSV_LINE *lines, size_t lines_len, int total_blocks) {
return NULL;
// for (size_t i = 0; i < lines_len; i++) {
bool valueInArray(uint32_t val, uint32_t *arr, size_t n) {
for (size_t i = 0; i < n; i++)
if (arr[i] == val)
return true;
return false;
}
// }
STUDENT *getStudents(CSV_LINE *lines, size_t lines_len, int total_blocks) {
// Find the number of unique students and the number of their requests
uint32_t tmpPupilNums[MAX_STUDENTS];
uint8_t numRequests[MAX_STUDENTS];
for (size_t i = 0; i <= MAX_STUDENTS; i++)
numRequests[i] = 0;
uint16_t pupilNumCount = 0;
uint16_t currentPupilNum;
for (size_t i = 0; i <= lines_len; i++) {
currentPupilNum = lines[i].pupilNum;
bool exists = valueInArray(lines[i].pupilNum, tmpPupilNums, sizeof(tmpPupilNums)/sizeof(uint32_t));
if (sizeof(tmpPupilNums) == 0 || !exists) {
tmpPupilNums[pupilNumCount] = lines[i].pupilNum;
pupilNumCount++;
}
numRequests[pupilNumCount - 1]++;
}
// Create our student array with the correct number of students
STUDENT *students = malloc(pupilNumCount * sizeof(STUDENT));
for (uint16_t i = 0; i <= pupilNumCount; i++) {
STUDENT student;
student.pupilNum = tmpPupilNums[i];
student.expectedClasses = 0;
student.classes = 0;
student.grade = 0;
student.requestsLen = 0;
student.remainingAltsLen = 0;
REQUEST *requests = malloc(numRequests[i] * sizeof(REQUEST));
student.requests = requests;
char **schedule = malloc(TOTAL_BLOCKS * sizeof(int*));
for (int j = 0; j < TOTAL_BLOCKS; j++) schedule[j] = malloc(MAX_COURSE_ID_LEN);
student.schedule = schedule;
REQUEST *remainingAlts = malloc(MAX_REQUEST_ALTS * sizeof(REQUEST));
student.remainingAlts = remainingAlts;
students[i] = student;
}
for (size_t i = 0; i <= lines_len; i++) {
CSV_LINE line = lines[i];
STUDENT student;
for (uint16_t j = 0; j <= pupilNumCount; j++) {
if (lines[i].pupilNum == students[j].pupilNum) {
student = students[j];
break;
}
REQUEST request;
strcpy(request.crsNo, line.crsNo);
strcpy(request.description, line.description);
request.alternate = line.alternate;
student.requests[student.requestsLen] = request;
student.requestsLen++;
}
}
return students;
}
COURSE *getCourses(CSV_LINE *lines) {
// TODO: same shit as above but just for the courses
return NULL;
}
@@ -145,7 +221,7 @@ int main(int argc, char **argv) {
*/
char data_dir[] = "sample_data/course_selection_data.csv";
size_t num_lines = count_lines(data_dir);
int num_lines = count_lines(data_dir);
if (num_lines == -1) {
fputs("Failed to read number of lines in the given CSV file!\n", stderr);
return -1;
@@ -160,6 +236,7 @@ int main(int argc, char **argv) {
free(lines);
// Algorithm
free(students);
return 0;
}