2020-05-07 12:57:12 +02:00
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// swad_exam_print.c: exam prints (each copy of an exam in an event for a student)
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/*
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SWAD (Shared Workspace At a Distance),
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is a web platform developed at the University of Granada (Spain),
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and used to support university teaching.
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This file is part of SWAD core.
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Copyright (C) 1999-2020 Antonio Ca<EFBFBD>as Vargas
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU Affero General Public License as
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published by the Free Software Foundation, either version 3 of the
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License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Affero General Public License for more details.
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You should have received a copy of the GNU Affero General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/*****************************************************************************/
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/********************************* Headers ***********************************/
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/*****************************************************************************/
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#define _GNU_SOURCE // For asprintf
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#include <linux/limits.h> // For PATH_MAX
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#include <stddef.h> // For NULL
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#include <stdio.h> // For asprintf
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#include <stdlib.h> // For calloc
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#include <string.h> // For string functions
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#include "swad_box.h"
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#include "swad_database.h"
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#include "swad_exam.h"
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#include "swad_exam_event.h"
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#include "swad_exam_result.h"
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#include "swad_exam_set.h"
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#include "swad_exam_type.h"
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#include "swad_global.h"
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/*****************************************************************************/
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/************** External global variables from others modules ****************/
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/*****************************************************************************/
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extern struct Globals Gbl;
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/*****************************************************************************/
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/***************************** Private constants *****************************/
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/*****************************************************************************/
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2020-05-07 18:33:26 +02:00
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#define ExaPrn_MAX_QUESTIONS_PER_EXAM_PRINT 100 // Absolute maximum number of questions in an exam print
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2020-05-07 12:57:12 +02:00
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/*****************************************************************************/
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/******************************* Private types *******************************/
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/*****************************************************************************/
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struct ExaPrn_Print
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{
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2020-05-07 18:33:26 +02:00
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long PrnCod; // Exam print code
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time_t TimeUTC[Dat_NUM_START_END_TIME];
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unsigned NumQsts; // Number of questions
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unsigned NumQstsNotBlank; // Number of questions not blank
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bool Sent; // This exam print has been sent or not?
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// "Sent" means that user has clicked "Send" button after finishing
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double Score; // Total score of the exam print
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struct TstPrn_PrintedQuestion PrintedQuestions[ExaPrn_MAX_QUESTIONS_PER_EXAM_PRINT];
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2020-05-07 12:57:12 +02:00
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};
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/*****************************************************************************/
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/***************************** Private constants *****************************/
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/*****************************************************************************/
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/*****************************************************************************/
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/***************************** Private variables *****************************/
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/*****************************************************************************/
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/*****************************************************************************/
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/***************************** Private prototypes ****************************/
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/*****************************************************************************/
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2020-05-07 18:33:26 +02:00
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static void ExaPrn_ResetPrint (struct ExaPrn_Print *Print);
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static void ExaPrn_ResetPrintExceptPrnCod (struct ExaPrn_Print *Print);
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2020-05-07 12:57:12 +02:00
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static void ExaPrn_GetQuestionsForNewPrintFromDB (struct Exa_Exam *Exam,
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struct ExaPrn_Print *Print);
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2020-05-09 01:37:00 +02:00
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static unsigned ExaPrn_GetSomeQstsFromSetToPrint (struct ExaPrn_Print *Print,
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struct ExaSet_Set *Set,
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unsigned *NumQstInPrint);
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static void ExaPrn_CreatePrintInDB (const struct ExaEvt_Event *Event,
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struct ExaPrn_Print *Print);
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static void ExaPrn_ComputeScoresAndStoreQuestionsOfPrint (struct ExaPrn_Print *Print,
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bool UpdateQstScore);
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static void ExaPrn_StoreOneQstOfPrintInDB (const struct ExaPrn_Print *Print,
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unsigned NumQst);
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2020-05-07 18:33:26 +02:00
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/*****************************************************************************/
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/**************************** Reset exam print *******************************/
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/*****************************************************************************/
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static void ExaPrn_ResetPrint (struct ExaPrn_Print *Print)
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{
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Print->PrnCod = -1L;
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ExaPrn_ResetPrintExceptPrnCod (Print);
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}
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static void ExaPrn_ResetPrintExceptPrnCod (struct ExaPrn_Print *Print)
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{
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Print->TimeUTC[Dat_START_TIME] =
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Print->TimeUTC[Dat_END_TIME ] = (time_t) 0;
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Print->NumQsts =
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Print->NumQstsNotBlank = 0;
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Print->Sent = false; // After creating an exam print, it's not sent
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Print->Score = 0.0;
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}
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2020-05-07 12:57:12 +02:00
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/*****************************************************************************/
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/******************* Generate print of an exam in an event *******************/
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/*****************************************************************************/
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void ExaPrn_ShowNewExamPrint (void)
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{
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extern const char *Hlp_ASSESSMENT_Exams;
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struct Exa_Exams Exams;
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struct Exa_Exam Exam;
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struct ExaEvt_Event Event;
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struct ExaPrn_Print Print;
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/***** Reset exams context *****/
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Exa_ResetExams (&Exams);
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Exa_ResetExam (&Exam);
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ExaEvt_ResetEvent (&Event);
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2020-05-07 18:33:26 +02:00
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ExaPrn_ResetPrint (&Print);
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2020-05-07 12:57:12 +02:00
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/***** Get and check parameters *****/
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ExaEvt_GetAndCheckParameters (&Exams,&Exam,&Event);
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/***** Begin box *****/
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Box_BoxBegin (NULL,Exam.Title,
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NULL,NULL,
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Hlp_ASSESSMENT_Exams,Box_NOT_CLOSABLE);
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Lay_WriteHeaderClassPhoto (false,false,
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Gbl.Hierarchy.Ins.InsCod,
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Gbl.Hierarchy.Deg.DegCod,
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Gbl.Hierarchy.Crs.CrsCod);
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/***** Begin table *****/
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HTM_TABLE_BeginWideMarginPadding (10);
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/***** Get questions from database *****/
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ExaPrn_GetQuestionsForNewPrintFromDB (&Exam,&Print);
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2020-05-09 01:37:00 +02:00
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if (Print.NumQsts)
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{
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/***** Create new exam print in database *****/
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ExaPrn_CreatePrintInDB (&Event,&Print);
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ExaPrn_ComputeScoresAndStoreQuestionsOfPrint (&Print,
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false); // Don't update question score
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/***** Show test exam to be answered *****/
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// Tst_ShowTestExamToFillIt (&Print,NumExamsGeneratedByMe,Tst_REQUEST);
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}
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// else // No questions found
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// {
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// Ale_ShowAlert (Ale_INFO,Txt_No_questions_found_matching_your_search_criteria);
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// Tst_ShowFormRequestTest (&Test); // Show the form again
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// }
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2020-05-07 12:57:12 +02:00
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/***** End table *****/
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HTM_TABLE_End ();
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}
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/*****************************************************************************/
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/*********** Get questions for a new exam print from the database ************/
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/*****************************************************************************/
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static void ExaPrn_GetQuestionsForNewPrintFromDB (struct Exa_Exam *Exam,
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struct ExaPrn_Print *Print)
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{
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2020-05-07 14:15:39 +02:00
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extern const char *Txt_question;
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extern const char *Txt_questions;
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2020-05-07 12:57:12 +02:00
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MYSQL_RES *mysql_res;
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MYSQL_ROW row;
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unsigned NumSets;
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unsigned NumSet;
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struct ExaSet_Set Set;
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2020-05-09 01:37:00 +02:00
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unsigned NumQstsFromSet;
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unsigned NumQstInPrint = 0;
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2020-05-07 12:57:12 +02:00
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/***** Get data of set of questions from database *****/
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NumSets = (unsigned)
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DB_QuerySELECT (&mysql_res,"can not get sets of questions",
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"SELECT SetCod," // row[0]
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"NumQstsToPrint," // row[1]
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"Title" // row[2]
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" FROM exa_sets"
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" WHERE ExaCod=%ld"
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" ORDER BY SetInd",
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Exam->ExaCod);
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2020-05-09 01:37:00 +02:00
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/***** Get questions from all sets *****/
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Print->NumQsts = 0;
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2020-05-07 12:57:12 +02:00
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if (NumSets)
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2020-05-09 01:37:00 +02:00
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/***** For each set in exam... *****/
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2020-05-07 12:57:12 +02:00
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for (NumSet = 0;
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NumSet < NumSets;
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NumSet++)
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{
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/***** Create set of questions *****/
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ExaSet_ResetSet (&Set);
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/***** Get set data *****/
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row = mysql_fetch_row (mysql_res);
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/*
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row[0] SetCod
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row[1] NumQstsToPrint
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row[2] Title
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*/
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/* Get set code (row[0]) */
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Set.SetCod = Str_ConvertStrCodToLongCod (row[0]);
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/* Get set index (row[1]) */
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Set.NumQstsToPrint = Str_ConvertStrToUnsigned (row[1]);
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/* Get the title of the set (row[2]) */
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Str_Copy (Set.Title,row[2],
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ExaSet_MAX_BYTES_TITLE);
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2020-05-07 18:33:26 +02:00
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/***** Title for this set *****/
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/* Begin title for this set */
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HTM_TR_Begin (NULL);
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2020-05-07 18:33:26 +02:00
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HTM_TD_Begin ("colspan=\"2\"");
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HTM_TABLE_BeginWide ();
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2020-05-07 18:33:26 +02:00
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/* Title */
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HTM_TD_Begin ("class=\"EXA_SET_TITLE\"");
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2020-05-07 12:57:12 +02:00
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HTM_Txt (Set.Title);
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HTM_TD_End ();
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2020-05-07 18:33:26 +02:00
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/* Number of questions to appear in exam print */
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HTM_TD_Begin ("class=\"EXA_SET_NUM_QSTS\"");
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2020-05-07 12:57:12 +02:00
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HTM_Unsigned (Set.NumQstsToPrint);
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2020-05-07 14:15:39 +02:00
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HTM_NBSP ();
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HTM_Txt (Set.NumQstsToPrint == 1 ? Txt_question :
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Txt_questions);
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2020-05-07 12:57:12 +02:00
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HTM_TD_End ();
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2020-05-07 18:33:26 +02:00
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/* End title for this set */
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HTM_TABLE_End ();
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HTM_TD_End ();
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2020-05-07 12:57:12 +02:00
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HTM_TR_End ();
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2020-05-07 18:33:26 +02:00
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/***** Questions in this set *****/
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2020-05-09 01:37:00 +02:00
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NumQstsFromSet = ExaPrn_GetSomeQstsFromSetToPrint (Print,&Set,&NumQstInPrint);
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Print->NumQsts += NumQstsFromSet;
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2020-05-07 12:57:12 +02:00
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}
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2020-05-09 01:37:00 +02:00
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/***** Check *****/
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if (Print->NumQsts != NumQstInPrint)
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Lay_ShowErrorAndExit ("Wrong number of questions.");
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2020-05-07 12:57:12 +02:00
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/***** Free structure that stores the query result *****/
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DB_FreeMySQLResult (&mysql_res);
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}
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2020-05-07 18:33:26 +02:00
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/*****************************************************************************/
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/************************ Show questions from a set **************************/
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/*****************************************************************************/
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2020-05-09 01:37:00 +02:00
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static unsigned ExaPrn_GetSomeQstsFromSetToPrint (struct ExaPrn_Print *Print,
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struct ExaSet_Set *Set,
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unsigned *NumQstInPrint)
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2020-05-07 18:33:26 +02:00
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{
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MYSQL_RES *mysql_res;
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MYSQL_ROW row;
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2020-05-09 01:37:00 +02:00
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unsigned NumQstsInSet;
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unsigned NumQstInSet;
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2020-05-07 18:33:26 +02:00
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Tst_AnswerType_t AnswerType;
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bool Shuffle;
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/***** Get questions from database *****/
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2020-05-09 01:37:00 +02:00
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NumQstsInSet = (unsigned)
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DB_QuerySELECT (&mysql_res,"can not get questions from set",
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"SELECT tst_questions.QstCod," // row[0]
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"tst_questions.AnsType," // row[1]
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"tst_questions.Shuffle" // row[2]
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" FROM exa_questions,tst_questions"
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" WHERE exa_questions.setCod=%ld"
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" AND exa_questions.QstCod=tst_questions.QstCod"
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" ORDER BY RAND()" // Don't use RAND(NOW()) because the same ordering will be repeated across sets
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" LIMIT %u",
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Set->SetCod,
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Set->NumQstsToPrint);
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2020-05-07 18:33:26 +02:00
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/***** Questions in this set *****/
|
2020-05-09 01:37:00 +02:00
|
|
|
|
for (NumQstInSet = 0;
|
|
|
|
|
NumQstInSet < NumQstsInSet;
|
|
|
|
|
NumQstInSet++, (*NumQstInPrint)++)
|
2020-05-07 18:33:26 +02:00
|
|
|
|
{
|
|
|
|
|
Gbl.RowEvenOdd = 1 - Gbl.RowEvenOdd;
|
|
|
|
|
|
|
|
|
|
/***** Get question data *****/
|
|
|
|
|
row = mysql_fetch_row (mysql_res);
|
|
|
|
|
/*
|
|
|
|
|
row[0] QstCod
|
|
|
|
|
row[1] AnsType
|
|
|
|
|
row[2] Shuffle
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
/* Get question code (row[0]) */
|
2020-05-09 01:37:00 +02:00
|
|
|
|
Print->PrintedQuestions[*NumQstInPrint].QstCod = Str_ConvertStrCodToLongCod (row[0]);
|
2020-05-07 18:33:26 +02:00
|
|
|
|
|
|
|
|
|
/* Get answer type (row[1]) */
|
|
|
|
|
AnswerType = Tst_ConvertFromStrAnsTypDBToAnsTyp (row[1]);
|
|
|
|
|
|
|
|
|
|
/* Get shuffle (row[2]) */
|
|
|
|
|
Shuffle = (row[2][0] == 'Y');
|
|
|
|
|
|
|
|
|
|
/* Set indexes of answers */
|
|
|
|
|
switch (AnswerType)
|
|
|
|
|
{
|
|
|
|
|
case Tst_ANS_INT:
|
|
|
|
|
case Tst_ANS_FLOAT:
|
|
|
|
|
case Tst_ANS_TRUE_FALSE:
|
|
|
|
|
case Tst_ANS_TEXT:
|
2020-05-09 01:37:00 +02:00
|
|
|
|
Print->PrintedQuestions[*NumQstInPrint].StrIndexes[0] = '\0';
|
2020-05-07 18:33:26 +02:00
|
|
|
|
break;
|
|
|
|
|
case Tst_ANS_UNIQUE_CHOICE:
|
|
|
|
|
case Tst_ANS_MULTIPLE_CHOICE:
|
|
|
|
|
/* If answer type is unique or multiple option,
|
|
|
|
|
generate indexes of answers depending on shuffle */
|
2020-05-09 01:37:00 +02:00
|
|
|
|
Tst_GenerateChoiceIndexesDependingOnShuffle (&Print->PrintedQuestions[*NumQstInPrint],Shuffle);
|
2020-05-07 18:33:26 +02:00
|
|
|
|
break;
|
|
|
|
|
default:
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Reset user's answers.
|
|
|
|
|
Initially user has not answered the question ==> initially all the answers will be blank.
|
|
|
|
|
If the user does not confirm the submission of their exam ==>
|
|
|
|
|
==> the exam may be half filled ==> the answers displayed will be those selected by the user. */
|
2020-05-09 01:37:00 +02:00
|
|
|
|
Print->PrintedQuestions[*NumQstInPrint].StrAnswers[0] = '\0';
|
2020-05-07 18:33:26 +02:00
|
|
|
|
|
|
|
|
|
/* Begin row for this question */
|
|
|
|
|
HTM_TR_Begin (NULL);
|
|
|
|
|
|
|
|
|
|
/* Title */
|
|
|
|
|
HTM_TD_Begin ("class=\"LT COLOR%u\"",Gbl.RowEvenOdd);
|
2020-05-09 01:37:00 +02:00
|
|
|
|
HTM_TxtF ("Pregunta %ld",Print->PrintedQuestions[*NumQstInPrint].QstCod);
|
2020-05-07 18:33:26 +02:00
|
|
|
|
HTM_TD_End ();
|
|
|
|
|
|
|
|
|
|
/* Number of questions to appear in exam print */
|
|
|
|
|
HTM_TD_Begin ("class=\"LT COLOR%u\"",Gbl.RowEvenOdd);
|
|
|
|
|
HTM_Txt ("Enunciado y respuestas");
|
|
|
|
|
HTM_TD_End ();
|
|
|
|
|
|
|
|
|
|
/* End title for this question */
|
|
|
|
|
HTM_TR_End ();
|
|
|
|
|
}
|
2020-05-09 01:37:00 +02:00
|
|
|
|
|
|
|
|
|
return NumQstsInSet;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/*****************************************************************************/
|
|
|
|
|
/***************** Create new blank exam print in database *******************/
|
|
|
|
|
/*****************************************************************************/
|
|
|
|
|
|
|
|
|
|
static void ExaPrn_CreatePrintInDB (const struct ExaEvt_Event *Event,
|
|
|
|
|
struct ExaPrn_Print *Print)
|
|
|
|
|
{
|
|
|
|
|
/***** Insert new exam print into table *****/
|
|
|
|
|
Print->PrnCod =
|
|
|
|
|
DB_QueryINSERTandReturnCode ("can not create new exam print",
|
|
|
|
|
"INSERT INTO exa_prints"
|
|
|
|
|
" (EvtCod,UsrCod,StartTime,EndTime,NumQsts,NumQstsNotBlank,Sent,Score)"
|
|
|
|
|
" VALUES"
|
|
|
|
|
" (%ld,%ld,NOW(),NOW(),%u,0,'N',0)",
|
|
|
|
|
Event->EvtCod,
|
|
|
|
|
Gbl.Usrs.Me.UsrDat.UsrCod,
|
|
|
|
|
Print->NumQsts);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/*****************************************************************************/
|
|
|
|
|
/*********** Compute score of each question and store in database ************/
|
|
|
|
|
/*****************************************************************************/
|
|
|
|
|
|
|
|
|
|
static void ExaPrn_ComputeScoresAndStoreQuestionsOfPrint (struct ExaPrn_Print *Print,
|
|
|
|
|
bool UpdateQstScore)
|
|
|
|
|
{
|
|
|
|
|
unsigned NumQst;
|
|
|
|
|
struct Tst_Question Question;
|
|
|
|
|
|
|
|
|
|
/***** Initialize total score *****/
|
|
|
|
|
Print->Score = 0.0;
|
|
|
|
|
Print->NumQstsNotBlank = 0;
|
|
|
|
|
|
|
|
|
|
/***** Compute and store scores of all questions *****/
|
|
|
|
|
for (NumQst = 0;
|
|
|
|
|
NumQst < Print->NumQsts;
|
|
|
|
|
NumQst++)
|
|
|
|
|
{
|
|
|
|
|
/* Compute question score */
|
|
|
|
|
Tst_QstConstructor (&Question);
|
|
|
|
|
Question.QstCod = Print->PrintedQuestions[NumQst].QstCod;
|
|
|
|
|
Question.Answer.Type = Tst_GetQstAnswerType (Question.QstCod);
|
|
|
|
|
TstPrn_ComputeAnswerScore (&Print->PrintedQuestions[NumQst],&Question);
|
|
|
|
|
Tst_QstDestructor (&Question);
|
|
|
|
|
|
|
|
|
|
/* Store test exam question in database */
|
|
|
|
|
ExaPrn_StoreOneQstOfPrintInDB (Print,
|
|
|
|
|
NumQst); // 0, 1, 2, 3...
|
|
|
|
|
|
|
|
|
|
/* Accumulate total score */
|
|
|
|
|
Print->Score += Print->PrintedQuestions[NumQst].Score;
|
|
|
|
|
if (Print->PrintedQuestions[NumQst].AnswerIsNotBlank)
|
|
|
|
|
Print->NumQstsNotBlank++;
|
|
|
|
|
|
|
|
|
|
/* Update the number of hits and the score of this question in tests database */
|
|
|
|
|
if (UpdateQstScore)
|
|
|
|
|
Tst_UpdateQstScoreInDB (&Print->PrintedQuestions[NumQst]);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/*****************************************************************************/
|
|
|
|
|
/************* Store user's answers of an test exam into database ************/
|
|
|
|
|
/*****************************************************************************/
|
|
|
|
|
|
|
|
|
|
static void ExaPrn_StoreOneQstOfPrintInDB (const struct ExaPrn_Print *Print,
|
|
|
|
|
unsigned NumQst)
|
|
|
|
|
{
|
|
|
|
|
char StrIndexes[Tst_MAX_BYTES_INDEXES_ONE_QST + 1];
|
|
|
|
|
char StrAnswers[Tst_MAX_BYTES_ANSWERS_ONE_QST + 1];
|
|
|
|
|
|
|
|
|
|
/***** Replace each separator of multiple parameters by a comma *****/
|
|
|
|
|
/* In database commas are used as separators instead of special chars */
|
|
|
|
|
Par_ReplaceSeparatorMultipleByComma (Print->PrintedQuestions[NumQst].StrIndexes,StrIndexes);
|
|
|
|
|
Par_ReplaceSeparatorMultipleByComma (Print->PrintedQuestions[NumQst].StrAnswers,StrAnswers);
|
|
|
|
|
|
|
|
|
|
/***** Insert question and user's answers into database *****/
|
|
|
|
|
Str_SetDecimalPointToUS (); // To print the floating point as a dot
|
|
|
|
|
DB_QueryREPLACE ("can not update a question in an exam print",
|
|
|
|
|
"REPLACE INTO exa_print_questions"
|
|
|
|
|
" (PrnCod,QstCod,QstInd,Score,Indexes,Answers)"
|
|
|
|
|
" VALUES"
|
|
|
|
|
" (%ld,%ld,%u,'%.15lg','%s','%s')",
|
|
|
|
|
Print->PrnCod,Print->PrintedQuestions[NumQst].QstCod,
|
|
|
|
|
NumQst, // 0, 1, 2, 3...
|
|
|
|
|
Print->PrintedQuestions[NumQst].Score,
|
|
|
|
|
StrIndexes,
|
|
|
|
|
StrAnswers);
|
|
|
|
|
Str_SetDecimalPointToLocal (); // Return to local system
|
2020-05-07 18:33:26 +02:00
|
|
|
|
}
|