Parsing and help

Makefile

@@ -3,13 +3,13 @@ FLAGS=-g -Wall -Wextra -Wpedantic
 LFLAGS=
 
 
-all: bin/main
+all: bin/colloscope
 
-test: bin/main
-	bin/main MP2I-creneaux.txt 33 MP2I-colleurs.txt 16 6 15 output.csv
+test: bin/colloscope
+	bin/colloscope -v MP2I-creneaux.txt 33 MP2I-colleurs.txt 16 6 15 output.csv
 
 OBJECTS = obj/structure.o obj/algorithm.o obj/display.o obj/logger.o obj/main.o
-bin/main: $(OBJECTS)
+bin/colloscope: $(OBJECTS)
 	@mkdir -p bin
 	$(CC) -o $@ $(LFLAGS) $(FLAGS) $(OBJECTS)
 

src/main.c

@@ -21,6 +21,7 @@
 #include <stdlib.h>
 #include <stdbool.h>
 #include <time.h>
+#include <string.h>
 
 #include "logger.h"
 #include "structure.h"
@@ -29,21 +30,75 @@
 // gcc -g -Wall -Wextra -Wpedantic main.c -lSDL2 -lSDL2_image -lm -o main
 // ./main MP2I-creneaux.txt 33 MP2I-colleurs.txt 16 6 15 output.csv
 
+void print_help()
+{
+    printf("Colloscope - A program that generates a colloscope for French 'classe prépas'. By Alexandre Aboujaib\n");
+    printf("Licensed under the terms of the GNU GPL version 3 or later.\n\n");
+    printf("Usage: colloscope [-qvh] <creneaux> <n_creneaux> <colleurs> <n_colleurs> <n_weeks> <n_groups> <output>\n\n");
+    printf("Available options :\n");
+    printf(" -q    Quiet mode\n");
+    printf(" -v    Verbose mode\n");
+    printf(" -h    Print this help\n");
+}
+
 int main(int argc, char **argv) {
-    if (argc!=8) {
-        fprintf(stderr, "Usage: %s <creneaux> <n_creneaux> <colleurs> <n_colleurs> <n_weeks> <n_groups> <output>\n", argv[0]);
+    int offset;
+    bool quiet=false;
+    bool verbose=false;
+
+    if (argc==2 && strcmp(argv[1], "-h")==0)
+    {
+        print_help();
+        exit(0);
+    }
+    else if (argc==8)
+    {
+        offset=0;
+    }
+    else if (argc==9 && argv[1][0]=='-')
+    {
+        offset=1;
+        
+        for (char *ch=&argv[1][1]; *ch != '\0'; ch++)
+        {
+            switch (*ch)
+            {
+                case 'q':
+                    quiet=true; break;
+                case 'v':
+                    verbose=true; break;
+                default:
+                    fprintf(stderr, "Unknown option '%c'. Available: [-qvh].\n", *ch);
+            }
+        }
+
+        if (quiet && verbose)
+        {
+            fprintf(stderr, "You can't be both quiet and verbose!\n");
+        }
+    }
+    else {
+        fprintf(stderr, "Usage: %s [-qvh] <creneaux> <n_creneaux> <colleurs> <n_colleurs> <n_weeks> <n_groups> <output>\n", argv[0]);
         exit(1);
     }
     
-    create_logger("colloscope.log", LOG_TRACE);
 
-    char* path_creneaux = argv[1];
-    int n_creneaux = str_to_int(argv[2]);
-    char* path_colleurs = argv[3];
-    int n_colleurs = str_to_int(argv[6]);
-    int n_weeks = str_to_int(argv[5]);
-    int n_groups = str_to_int(argv[6]);
-    char* path_output = argv[7];
+    char* path_creneaux = argv[1+offset];
+    int n_creneaux = str_to_int(argv[2+offset]);
+    char* path_colleurs = argv[3+offset];
+    int n_colleurs = str_to_int(argv[6+offset]);
+    int n_weeks = str_to_int(argv[5+offset]);
+    int n_groups = str_to_int(argv[6+offset]);
+    char* path_output = argv[7+offset];
+    
+
+    if (quiet) {
+        create_logger("colloscope.log", LOG_WARN);
+    } else if (verbose) {
+        create_logger("colloscope.log", LOG_DEBUG);
+    } else {
+        create_logger("colloscope.log", LOG_INFO);
+    }
 
     trace("%d %d %d %d", n_creneaux, n_colleurs, n_weeks, n_groups);