projet.c

AnimalProcessing/Proficiencies/project.c

@@ -0,0 +1,188 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/wait.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <err.h>
+
+/*
+     __
+___( o)>
+\ <_. )
+ `---'
+ Coic Coic
+ */
+
+
+
+char** split(char* line){
+
+    if(!line) return NULL;
+
+    int index = 0;
+    //int words = 0;
+    int capa_words = 5;
+    char *token;
+    
+    // 5 car generalement les commandes ne vont pas plus loin
+    // 4 args + le NULL
+    // mmmh maybe pour gcc, les rm, touch, mkdir mais azy on fait un realloc à ce moment flemme de compter tous les mots
+    
+    char **tokens = malloc(capa_words * sizeof(char *));
+    if(!tokens) exit(1);
+
+    index = 0;
+    token = strtok(line, " \n\t");
+    
+    while(token != NULL){
+    
+        tokens[index] = token;
+        index ++;
+
+        if(index >= capa_words) {
+            capa_words += 5;
+            tokens = realloc(tokens, capa_words * sizeof(char *));
+            if(!tokens){
+                free(tokens); 
+                exit(1);
+            }
+
+        }
+
+        token = strtok(NULL, " \n\t");
+
+    } 
+    if(!tokens) return NULL;
+    tokens[index] = NULL;
+    return tokens;
+}
+
+int exec_cmd(char** args){
+
+    int wstatus;
+    pid_t pid = fork();
+
+    if (pid < 0) exit(-1);
+    // Child
+    else if (pid == 0){
+
+        if(strcmp(*args , "run") != 0) exit(-1);
+        else exit(execvp("run", args));
+        char child_buffer[2048];
+        fgets(child_buffer, 2047, stdout);
+        printf("%s\n", child_buffer);
+        //if(execvp(args[0], args) == -1) exit(-1);
+        //exit(0);
+    }
+
+    //Uncle... You're again ! Oh it's not my uncle it's my daddy !
+    //Can you tell to my ACDC to decode my README ? It will be fun !
+    //In the next README I will put a 14Mo picture inside encoded in b64 :)
+    
+    else{
+
+        if(waitpid(pid, &wstatus, 0) ==  -1) return -1; 
+        
+        if( WIFEXITED(wstatus)) return WEXITSTATUS(wstatus);
+    }
+    return 0;
+}
+
+int execution_loop(){
+    
+    // Vars
+    
+    //Dernier code de sortie 
+    int last_code = 0;
+    
+    char buffer[2048]; //reset -> buffer[0] = '\0'
+    
+    // Les args de commande 
+    char **args;
+    while (1){ //boucle inf
+    
+        puts("> "); //invitation à entrer une coooooooommmmmaaaaaaaannnnndde
+        
+        // on recupere le texte tapé grace a stdin
+        fgets(buffer, 2047, stdin);
+        
+        //on split les args {arg1, arg2, arg3}
+        // arg1 -> commande (run, exit, ?)
+        // arg2 -> pour run la commande voulue et un code d'exit pour exit 
+        args = split(buffer);
+        
+        //on compte les args 
+        int index = 0;
+        while(args[index] != NULL) index ++;
+        
+        printf("nbr args : %i\n", index);
+
+        if (index > 0){ // si l'user rentre juste un ' ' ou rien
+
+            if (strcmp(args[0], "exit") == 0 ){
+                 
+                if (!args[1]) free(args);
+
+                else{ 
+                    last_code = atoi(args[1]);
+                    free(args);
+                }
+                
+                return last_code;        
+            }
+            
+            else if (strcmp(args[0], "run") == 0){
+                printf("test\n");
+                last_code = exec_cmd(args);
+            }
+            
+            else if (strcmp(args[0], "?") == 0) printf("%i\n", last_code);
+            
+            else {
+                    printf("Unknown command\n");
+            }
+        }
+        free(args); // on ne peux pas malloc 2 fois args
+        buffer[0] = '\0'; // on reset le buffer
+    }
+    return 0;
+}
+
+int is_terminal()
+{
+    return isatty(STDIN_FILENO) && isatty(STDOUT_FILENO);
+}
+int main() {
+  printf("\n Code de fin : %i\n",execution_loop());
+}
+
+
+
+/*
+int main(){
+    char* cmd1[] = {"ls", "-l", NULL};
+    int res = exec_cmd(cmd1);
+// res = 0
+// execute ls -l and return the exit code
+    printf("%i\n",res);
+}*/
+
+/*
+int main(){
+
+char input[] = "run ls -l  -h   ";
+char** res = split(input);
+// res[0] = "run"
+// res[1] = "ls"
+// res[2] = "-l"
+// res[3] = "-h"
+// res[4] = NULL
+int index = 0;
+while(res[index] != NULL){
+
+    printf("res[%d] = \"%s\"\n", index, res[index]);
+    index ++;
+}
+free(res);
+}*/