complete getStudents() - untested to see if results is correct
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1 file changed
+107
-30
@@ -2,34 +2,44 @@
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#include <stdlib.h>
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#include <string.h>
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#include <stdbool.h>
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#include <stdint.h>
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/*
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Using define instead of constants prevents
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"Variable modified error"
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*/
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// Important constants
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#define MAX_PUPIL_NUM_LEN 8
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#define MAX_COURSE_DES_LEN 50
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#define MAX_COURSE_NO_LEN 20
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#define MAX_PUPIL_NUM_LEN 8
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#define MAX_COURSE_ID_LEN MAX_COURSE_NO_LEN + 4 // 4 includes the underscore and the 3 digit unique number to identify the course
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#define TOTAL_BLOCKS 10 // the number of blocks between 2 semesters i.e 8 = 4 blocks per semester, 10 = 5 blocks per semester
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#define MAX_REQUEST_ALTS 6
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#define CLASSROOMS 40
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#define MIN_REQ 18
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#define CLASS_CAP 30
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#define MAX_STUDENTS CLASS_CAP * CLASSROOMS
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#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")
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// 5 is the length of "FALSE" & 3 is the number of commas per line
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#define MAX_CHAR MAX_PUPIL_NUM_LEN + MAX_COURSE_NO_LEN + MAX_COURSE_DES_LEN + 5 + 3
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/*** DEFINE CSV READER FUNCTIONS & DATASTRUCTURES ***/
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typedef struct {
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char pupilNum[MAX_PUPIL_NUM_LEN];
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uint32_t pupilNum;
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char crsNo[MAX_COURSE_NO_LEN];
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char description[MAX_COURSE_DES_LEN];
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bool alternate;
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} CSV_LINE;
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size_t count_lines(char data_dir[]) {
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// Dumbass me set this to size_t earlier, forgot that size_t is unsigned and I can't return -1 on failure
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int count_lines(char data_dir[]) {
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FILE *stream = fopen(data_dir, "r");
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if (!stream) {
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fputs("Failed to open CSV file", stderr);
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return -1;
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}
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char buff[MAX_CHAR];
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size_t counter = 0;
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for (;;) {
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@@ -64,29 +74,29 @@ CSV_LINE *csvReader(char data_dir[], size_t size) {
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int i = 0;
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// Read each line in CSV file
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while (fgets(buff, sizeof(buff), stream) && i < size) {
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while (fgets(buff, sizeof(buff), stream) && i <= size) {
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CSV_LINE csv_line;
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lines[i] = csv_line;
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// Tokenize the line to extract data
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char *token = strtok(buff, ",");
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if (token) {
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strncpy(lines[i].pupilNum, token, MAX_PUPIL_NUM_LEN);
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// lines[i].pupilNum[strcspn(lines[i].pupilNum, "\n")] = 0; // Remove newline
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}
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if (token)
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lines[i].pupilNum = atoi(token); // convert string to uint32_t
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token = strtok(NULL, ",");
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if (token)
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strncpy(lines[i].crsNo, token, MAX_COURSE_NO_LEN);
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token = strtok(NULL, ",");
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if (token) strncpy(lines[i].crsNo, token, MAX_COURSE_NO_LEN);
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token = strtok(NULL, ",");
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if (token) strncpy(lines[i].description, token, MAX_COURSE_DES_LEN);
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if (token)
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strncpy(lines[i].description, token, MAX_COURSE_DES_LEN);
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token = strtok(NULL, ",");
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if (token) {
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char alternate[5];
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strncpy(alternate, token, 5);
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alternate[strcspn(alternate, "\n")] = 0; // Remove newline
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lines[i].alternate = strcmp(alternate, "TRUE") == 0 ? true : false;
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lines[i].alternate = !strcmp(alternate, "TRUE") ? true : false;
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}
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i++;
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@@ -101,38 +111,104 @@ CSV_LINE *csvReader(char data_dir[], size_t size) {
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typedef struct {
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char crsNo[MAX_COURSE_NO_LEN];
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char description[MAX_COURSE_DES_LEN];
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bool alt;
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bool alternate;
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} REQUEST;
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typedef struct {
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char pupilNum[MAX_PUPIL_NUM_LEN];
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REQUEST request[TOTAL_BLOCKS + MAX_REQUEST_ALTS];
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char schedule[TOTAL_BLOCKS]; // blocks 1 through (TOTAL_BLOCKS / 2) represents the first semester in this array
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short expectedClasses;
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short classes;
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REQUEST remainingAlts[MAX_REQUEST_ALTS];
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short studentIndex;
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uint32_t pupilNum;
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REQUEST *requests;
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uint8_t requestsLen;
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char **schedule;
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uint8_t expectedClasses;
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uint8_t classes;
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REQUEST *remainingAlts;
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uint8_t remainingAltsLen;
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uint8_t grade;
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} STUDENT;
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typedef struct {
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char crsNo[MAX_COURSE_NO_LEN];
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short requests;
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uint16_t requests;
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char description[MAX_COURSE_DES_LEN];
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short credits;
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bool core; // Is this a core class? prioritize this course over alternates
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STUDENT students[CLASS_CAP];
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uint8_t credits;
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char students[CLASS_CAP][sizeof(uint32_t)];
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} COURSE;
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/*** DEFINE GET FUNCTIONS FOR STUDENTS & COURSES FROM CSV ***/
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bool valueInArray(uint32_t val, uint32_t *arr, size_t n) {
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for (size_t i = 0; i < n; i++)
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if (arr[i] == val)
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return true;
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return false;
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}
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STUDENT *getStudents(CSV_LINE *lines, size_t lines_len, int total_blocks) {
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return NULL;
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// for (size_t i = 0; i < lines_len; i++) {
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// Find the number of unique students and the number of their requests
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uint32_t tmpPupilNums[MAX_STUDENTS];
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uint8_t numRequests[MAX_STUDENTS];
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for (size_t i = 0; i <= MAX_STUDENTS; i++)
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numRequests[i] = 0;
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uint16_t pupilNumCount = 0;
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uint16_t currentPupilNum;
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for (size_t i = 0; i <= lines_len; i++) {
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currentPupilNum = lines[i].pupilNum;
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bool exists = valueInArray(lines[i].pupilNum, tmpPupilNums, sizeof(tmpPupilNums)/sizeof(uint32_t));
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if (sizeof(tmpPupilNums) == 0 || !exists) {
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tmpPupilNums[pupilNumCount] = lines[i].pupilNum;
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pupilNumCount++;
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}
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numRequests[pupilNumCount - 1]++;
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}
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// Create our student array with the correct number of students
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STUDENT *students = malloc(pupilNumCount * sizeof(STUDENT));
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for (uint16_t i = 0; i <= pupilNumCount; i++) {
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STUDENT student;
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// }
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student.pupilNum = tmpPupilNums[i];
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student.expectedClasses = 0;
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student.classes = 0;
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student.grade = 0;
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student.requestsLen = 0;
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student.remainingAltsLen = 0;
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REQUEST *requests = malloc(numRequests[i] * sizeof(REQUEST));
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student.requests = requests;
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char **schedule = malloc(TOTAL_BLOCKS * sizeof(int*));
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for (int j = 0; j < TOTAL_BLOCKS; j++) schedule[j] = malloc(MAX_COURSE_ID_LEN);
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student.schedule = schedule;
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REQUEST *remainingAlts = malloc(MAX_REQUEST_ALTS * sizeof(REQUEST));
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student.remainingAlts = remainingAlts;
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students[i] = student;
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}
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for (size_t i = 0; i <= lines_len; i++) {
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CSV_LINE line = lines[i];
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STUDENT student;
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for (uint16_t j = 0; j <= pupilNumCount; j++) {
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if (lines[i].pupilNum == students[j].pupilNum) {
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student = students[j];
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break;
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}
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REQUEST request;
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strcpy(request.crsNo, line.crsNo);
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strcpy(request.description, line.description);
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request.alternate = line.alternate;
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student.requests[student.requestsLen] = request;
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student.requestsLen++;
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}
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}
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return students;
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}
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COURSE *getCourses(CSV_LINE *lines) {
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// TODO: same shit as above but just for the courses
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return NULL;
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}
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@@ -145,7 +221,7 @@ int main(int argc, char **argv) {
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*/
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char data_dir[] = "sample_data/course_selection_data.csv";
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size_t num_lines = count_lines(data_dir);
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int num_lines = count_lines(data_dir);
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if (num_lines == -1) {
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fputs("Failed to read number of lines in the given CSV file!\n", stderr);
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return -1;
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@@ -160,6 +236,7 @@ int main(int argc, char **argv) {
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free(lines);
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// Algorithm
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free(students);
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return 0;
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}
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