/*============================
EVALUATE COMMAND
============================*/
char evaluate_command(char cmd)
{
switch (cmd)
{
case 'i':
case 'I':
add_song_to_MusicLibrary();
break;
case 'p':
case 'P':
print_MusicLibrary();
break;
case 'd':
case 'D':
delete_command();
break;
case 'l':
case 'L':
look_up_command();
break;
case 'q':
case 'Q':
store_MusicLibrary();
fclose(m_fp);
printf("quitting\n");
return 'q';
default:
break;
}
return 'a';
}
void readline(shell_struct *shell)
{
int i;
int end = 0; /*stoppe la saisie lorsqu'il vaut 1*/
int cur_col = 0; /*dans le terminal, indique la position du pointeur*/
struct winsize ws;
ioctl(STDOUT_FILENO, TIOCGWINSZ, &ws);
int colonnes = ws.ws_col;
cur_col = shellPrompt(0);
fflush(stdout);
printf("\033[s");
struct termios oldt;
if (tcgetattr(0, &oldt) != 0) {
perror("Erreur tcget");
}
struct termios newt = oldt;
cfmakeraw(&newt);
/* On change la structure termios default, on ajout un retour chariot a chaque newline detecté */
//newt.c_oflag |= (ONLCR | OPOST);
if (tcsetattr(0, TCSANOW, &newt) != 0) {
perror("Erreur tcset");
}
char *com_hist;
int count = 0;/*sauvegarde le nombre de char dans le buffer*/
int pos = 0;/*position du curseur dans le buffer buf*/
/*variables pour la tabulation*/
struct tab tabu;
init_tab(&tabu);
shell->buf[count] = '\0';
do {
int t, m;
int c = getbigchar();
switch (c) {
case 1: /*C^a*/
while (pos > 0) {
move_left(&pos,&cur_col,colonnes);
}
break;
case 3: /*C^c*/
shell->buf[0] = '\0';
break;
case 4: /*C^D*/
shell->end_b = 1;
end = 1;
shell->buf[0] = '\n';
break;
case 5: /*C^e*/
while (pos != count) {
move_right(&pos,&cur_col,colonnes,count);
}
break;
case 9:/*TAB autocompletion */
tabu.tab = 1;
/*tab est pressé pour la première fois*/
if (tabu.noccur == 0){
/*on récupère le dernier mot*/
tabu.lw = lastword(shell->buf, &(shell->buf[pos]), &(tabu.after_com), ' ');
/*on sauvegarde la position*/
tabu.save_pos = pos - strlen(tabu.lw);
}
/*on efface*/
while( pos > tabu.save_pos){
move_left(&pos,&cur_col,colonnes);
del_char(&pos, &cur_col, colonnes, &count, shell);
}
++tabu.noccur;
tabu.suggest = look_up_command(tabu.lw, tabu.noccur, tabu.after_com);
if (!strncmp(tabu.suggest, "",1)){
tabu.noccur = 1;
tabu.suggest = tabu.lw; /*on reprend le mot de base*/
}
/*on insère*/
i = 0;
while (tabu.suggest[i] != '\0') {
insert_char(&pos, &cur_col, colonnes, &count, shell, tabu.suggest[i]);
i++;
}
break;
case 11:/*^Ck*/
strncpy(shell->save_buf, &shell->buf[pos], count - pos);
shell->save_buf[(count + 1) - pos] = '\0';
while(pos != count) {
del_char(&pos,&cur_col,colonnes,&count,shell);
}
break;
case 13:/*Enter*/
end = 1;
while (pos != count) {
move_right(&pos,&cur_col,colonnes,count);
}
strncmp(shell->buf, "\0", 1) ? insert_new_cmd(shell->buf) : 0;
shell->buf[pos] = '\0';
break;
case 25:/*C^y*/
i = 0;
while (shell->save_buf[i] != '\0') {
insert_char(&pos, &cur_col, colonnes, &count, shell, shell->save_buf[i]);
i++;
}
break;
case 2: /*C^b*/
case KLEFT:
move_left(&pos, &cur_col, colonnes);
break;
case 6:/*C^f*/
case KRIGHT:
move_right(&pos, &cur_col, colonnes, count);
break;
case KUP:/*historique -*/
if (!is_empty_hist()){
printf("\033[u");
printf("\033[K");
cur_col = shellPrompt(0);
com_hist = get_prev_cmd();
printf("%s", com_hist);
strncpy(shell->buf, com_hist, strlen(com_hist) + 1);
cur_col += strlen(com_hist);
count = strlen(com_hist);
pos = count;
}
break;
case KDOWN:/*historique +*/
if (!is_empty_hist()){
printf("\033[u");
printf("\033[K");
cur_col = shellPrompt(0);
com_hist = get_next_cmd();
printf("%s", com_hist);
strncpy(shell->buf, com_hist, strlen(com_hist) + 1);
cur_col += strlen(com_hist);
count = strlen(com_hist);
pos = count;
}
break;
case KDEL: /* Touche suppr */
del_char(&pos,&cur_col,colonnes,&count,shell);
break;
case 127: /* Touche retour (del) */
tabu.noccur = 0;
if (pos == 0) {
break;
}
if (pos < count) {
for (i = pos - 1; i < count; i++) {
shell->buf[i] = shell->buf[i + 1];
}
} else {
shell->buf[pos - 1] = '\0';
}
if (cur_col > 0) {
printf("\033[D");
cur_col--;
} else {
printf("\033[A\033[%dC", colonnes - 1);
cur_col = colonnes - 1;
}
count--;
pos--;
printf("%s ", &shell->buf[pos]);
t = count - pos + 1;
m = (t + cur_col - 1) / colonnes;
if (m > 0) {
printf("\033[%dA", m);
}
t -= m * colonnes;
if (t > 0) {
printf("\033[%dD", t);
} else if (t < 0) {
printf("\033[%dC", -t);
}
break;
default:
if (tabu.tab){
tabu.noccur = 0;
}
insert_char(&pos, &cur_col, colonnes, &count, shell, c);
break;
}
fflush(stdout);
} while (!end);
if (tcsetattr(0, TCSANOW, &oldt) != 0) {
perror("erreur tcset");
}
printf("\n");
}