commit 285d34c72d418c1495e4e18d62b756ece01cae84
Author: grimhilt <grimhilt@users.noreply.github.com>
Date:   Sat Nov 11 22:07:07 2023 +0100

    completed

diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..ed47c54
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,21 @@
+CC = gcc
+CFLAGS := -std=c99 -Wall -Wextra -Werror -pedantic -Wvla
+OBJ_RUN := src/student.c src/main.o src/pin_handler.o
+
+all: run
+
+prepare: src/main.o src/pin_handler.o
+
+parser: src/parser.o 
+	@$(CC) $(CFLAGS) -o $@ $^
+	@./parser ./student.ino
+
+run: parser $(OBJ_RUN)
+	@$(CC) -o main $(OBJ_RUN)
+	@./main
+
+%.o: %.c
+	@$(CC) $(LFLAGS) $(CFLAGS) -c -o $@ $<
+
+clean:
+	$(RM) src/*.o main parser
diff --git a/src/default_student.c b/src/default_student.c
new file mode 100644
index 0000000..66ae601
--- /dev/null
+++ b/src/default_student.c
@@ -0,0 +1,18 @@
+#include "pin_handler.h"
+#include <stddef.h>
+
+#define L1 1
+#define L2 2
+#define L3 3
+#define L4 4
+#define C1 5
+#define C2 6
+#define C3 7
+#define C4 8
+
+
+
+void student(char *sequence, size_t *pointer)
+{
+    size_t row = 0;
+    size_t col = 0;
diff --git a/src/main.c b/src/main.c
new file mode 100644
index 0000000..71953fa
--- /dev/null
+++ b/src/main.c
@@ -0,0 +1,13 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include "student.h"
+
+int main(void)
+{
+    char *sequence = malloc(sizeof(char) * 20);
+    size_t pointer = 0;
+    student(sequence, &pointer);
+    free(sequence);
+    printf("The code was not found!\n");
+    return 1;
+}
diff --git a/src/parser.c b/src/parser.c
new file mode 100644
index 0000000..7d6b98a
--- /dev/null
+++ b/src/parser.c
@@ -0,0 +1,179 @@
+#define _GNU_SOURCE
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <err.h>
+
+void parser(FILE *fd);
+
+int main(int argc, char **argv)
+{
+    if (argc <= 1)
+    {
+        fprintf(stderr, "Usage: ./parser FILE\n");
+        return 1;
+    }
+
+    FILE *fd = fopen(argv[1], "r");
+    if (!fd)
+    {
+        fprintf(stderr, "Error opening file '%s'\n", argv[0]);
+        return 1;
+    }
+
+    parser(fd);
+
+    fclose(fd);
+    return 0;
+}
+
+char *get_id(char *buf, size_t buf_size, size_t *i)
+{
+    size_t start_nb = 0;
+    short previous_number = 0;
+    for (; *i < buf_size; *i += 1)
+    {
+        if ((buf[*i] >= '0' && buf[*i] <= '9') || buf[*i] == 'L' || buf[*i] == 'C')
+        {
+            if (!start_nb)
+                start_nb = *i;
+            previous_number = 1;
+        }
+        else if (previous_number)
+        {
+            buf[*i] = 0;
+            return buf + start_nb;
+        }
+    }
+    errx(2, "Error when compiling, pin number not found in a digitalWrite");
+}
+
+char *get_state(char *buf, size_t buf_size, size_t *i)
+{
+    for (; *i < buf_size - 3; *i += 1)
+    {
+        if (*i < buf_size - 4 && !strncmp("HIGH", buf + *i, 4))
+        {
+            buf[*i + 4] = 0;
+            return buf + *i;
+        }
+        if (!strncmp("LOW", buf + *i, 3))
+        {
+            buf[*i + 3] = 0;
+            return buf + *i;
+        }
+    }
+    errx(2, "Error when compiling, HIGH or LOW not found in a digitalWrite");
+}
+
+void skip_end(char *buf, size_t buf_size, size_t *i)
+{
+    while (*i < buf_size && buf[*i] != ';')
+        *i += 1;
+    *i += 1;
+}
+
+size_t convert_fct(char *buf, size_t start, size_t buf_size, FILE *dst)
+{
+    const size_t size_str = strlen("digitalWrite");
+    if (buf_size - start < size_str)
+        return start;
+    size_t index = start;
+    if (!strncmp("digitalWrite", (buf + start), size_str))
+    {
+        index += size_str + 1;
+        char *id = get_id(buf, buf_size, &index);
+        char *state = get_state(buf, buf_size, &index);
+        state[0] = (state[0] == 'H') ? '1' : '0';
+        fwrite("set_pin(", 1, 8, dst);
+        fwrite(id, 1, strlen(id), dst);
+        fwrite(", ", 1, 2, dst);
+        fwrite(state, 1, 1, dst);
+        fwrite(", &row, &col, sequence, pointer);", 1, 33, dst);
+        skip_end(buf, buf_size, &index);
+    }
+    else if (!strncmp("delay", (buf + start), 5))
+    {
+        index = buf_size;
+    }
+    return index;
+}
+void write_buf(char *buf, size_t start, size_t buf_size, FILE *dst, size_t *nb_bracket)
+{
+    for (size_t i = start; i < buf_size; i++)
+    {
+        if (buf[i] == '}') 
+            *nb_bracket -= 1;
+        else if (buf[i] == '{') 
+            *nb_bracket += 1;
+        
+        if (nb_bracket != 0)
+        {
+            size_t index = convert_fct(buf, i, buf_size, dst);
+            if (index < buf_size)
+                fwrite(buf + index, 1, 1, dst);
+            i = index;
+        }
+    }
+}
+
+size_t find_loop(char *buf, size_t buf_size)
+{
+    for (size_t i = 0; i < buf_size - 6; i++)
+    {
+        if (!strncmp("loop()", (buf + i), 6))
+        {
+            return i + 6;
+        }
+    }
+    return buf_size + 1;
+}
+
+FILE *init_student()
+{
+    FILE *student = fopen("./src/student.c", "w+");
+    FILE *default_student = fopen("./src/default_student.c", "r");
+    if (!student)
+        errx(1, "Failed to create file 'student.c'");
+    if (!default_student)
+    {
+        fclose(student);
+        errx(1, "Failed to open file 'default_student.c'");
+    }    
+    int c;
+    while ((c = fgetc(default_student)) != EOF)
+        fputc(c, student);
+    fclose (default_student);
+    return student;
+}
+
+void parser(FILE *fd)
+{
+    char *buf = NULL;
+    size_t buf_size = 0;
+    ssize_t bytes_read = 0;
+    size_t nb_bracket = -1;
+    short in_loop = 0;
+    FILE *student = init_student();
+    while ((bytes_read = getline(&buf, &buf_size, fd)) != -1)
+    {
+        if (in_loop)
+        {
+            write_buf(buf, 0, bytes_read, student, &nb_bracket);
+        }
+        else
+        {
+            size_t index_loop = find_loop(buf, buf_size);
+            if (index_loop != buf_size + 1)
+            {
+                in_loop = 1;
+            }
+        }
+    }
+    if (buf)
+        free(buf);
+    fclose(student);
+    if (!in_loop)
+        errx(2, "Could not find the main loop function");
+}
diff --git a/src/pin_handler.c b/src/pin_handler.c
new file mode 100644
index 0000000..8d7333a
--- /dev/null
+++ b/src/pin_handler.c
@@ -0,0 +1,60 @@
+#include "pin_handler.h"
+#include <stdio.h>
+#include <string.h>
+#include <err.h>
+
+static void set_data(size_t *wire, size_t id_mat, short state, size_t *pointer)
+{
+    // set multiple rows or cols at the same time resulting in a undefined
+    // behavior, the result is then voided
+    if (state && *wire != 0 && *wire != id_mat)
+    {
+        *pointer = 0;
+        return;
+    }
+
+    if (state)
+        *wire = id_mat;
+    else
+        *wire = 0;
+}
+
+static void read_digit(char *sequence, size_t *pointer, size_t *row, size_t *col)
+{
+    if (*row == 0 || *col == 0)
+        return;
+
+    const char keyboard[4][4] = {
+        { '1', '2', '3', 'A'},
+        { '4', '5', '6', 'B'},
+        { '7', '8', '9', 'C'},
+        { '*', '0', '#', 'D'},
+    };
+
+    sequence[*pointer] = keyboard[*row - 1][*col - 1];
+    *pointer += 1;
+    sequence[*pointer + 1] = 0;
+
+    if (keyboard[*row - 1][*col - 1] == '#')
+    {
+        if (!strcmp(CODE, sequence))
+        {
+            errx(0, "Code found: %s\n", sequence);
+        }
+        else
+            *pointer = 0;
+    }
+}
+
+void set_pin(int id, short state, size_t *row, size_t *col, char *sequence, size_t *pointer)
+{
+    if (id <= 4)
+    {
+        set_data(row, id, state, pointer);
+    }
+    else
+    {
+        set_data(col, id - 4, state, pointer);
+    }
+    read_digit(sequence, pointer, row, col);
+}
diff --git a/src/pin_handler.h b/src/pin_handler.h
new file mode 100644
index 0000000..c4b98ba
--- /dev/null
+++ b/src/pin_handler.h
@@ -0,0 +1,9 @@
+#ifndef PIN_HANDLER_H
+#define PIN_HANDLER_H
+
+#define CODE "1#"
+
+#include <stddef.h>
+void set_pin(int id, short state, size_t *row, size_t *col, char *sequence, size_t *pointer);
+
+#endif // PIN_HANDLER_H
diff --git a/src/student.c b/src/student.c
new file mode 100644
index 0000000..270f6f4
--- /dev/null
+++ b/src/student.c
@@ -0,0 +1,37 @@
+#include "pin_handler.h"
+#include <stddef.h>
+
+#define L1 1
+#define L2 2
+#define L3 3
+#define L4 4
+#define C1 5
+#define C2 6
+#define C3 7
+#define C4 8
+
+
+
+void student(char *sequence, size_t *pointer)
+{
+    size_t row = 0;
+    size_t col = 0;
+  //set_pin(13, 1, &row, &col, sequence, pointer); // sets the digital pin 13 on
+  //  //set_pin(13, 0, &row, &col, sequence, pointer);  // sets the digital pin 13 off
+  //  //for (size_t i = 0; i < 5; i++)
+  //{
+  //    set_pin(13, 1, &row, &col, sequence, pointer);
+  //}
+    
+  // 1 
+  set_pin(C1, 1, &row, &col, sequence, pointer);
+  set_pin(L1, 1, &row, &col, sequence, pointer);
+  set_pin(C1, 0, &row, &col, sequence, pointer);
+  set_pin(L1, 0, &row, &col, sequence, pointer);
+
+  // #
+  set_pin(C3, 1, &row, &col, sequence, pointer);
+  set_pin(L4, 1, &row, &col, sequence, pointer);
+
+
+}
diff --git a/src/student.h b/src/student.h
new file mode 100644
index 0000000..f2763cd
--- /dev/null
+++ b/src/student.h
@@ -0,0 +1,7 @@
+#ifndef STUDENT_H
+#define STUDENT_H
+
+#include <stddef.h>
+void student(char *sequence, size_t *pointer);
+
+#endif // STUDENT_H
diff --git a/student.ino b/student.ino
new file mode 100644
index 0000000..c5312cf
--- /dev/null
+++ b/student.ino
@@ -0,0 +1,29 @@
+#define L1 2
+#define L2 3
+#define L3 4
+#define L4 5
+#define C1 6
+#define C2 7
+#define C3 8
+#define C4 9
+
+void setup() {
+    // to complete
+}
+
+void loop() {
+    // 1
+    digitalWrite(C1, HIGH);
+    digitalWrite(L1, HIGH);
+
+    delay(100);
+
+    digitalWrite(C1, LOW);
+    digitalWrite(L1, LOW);
+
+    delay(100);
+
+    // #
+    digitalWrite(C3, HIGH);
+    digitalWrite(L4, HIGH);
+}