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https://gitlab.com/klmp200/fish.git
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Support des commandes internes basiques et implémentation rudimentaire des commandes générales
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@ -4,5 +4,5 @@ project(fish)
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set(CMAKE_C_STANDARD 99)
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set(CMAKE_C_FLAGS "-Wall -Werror -pedantic -fpic -Wextra")
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set(SOURCE_FILES main.c fish_lib/fish_lib.c fish_lib/fish_lib.h)
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set(SOURCE_FILES main.c fish_shell/fish_core.c fish_shell/fish_core.h fish_shell/fish_commands.c fish_shell/fish_commands.h fish_shell/fish_types.h)
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add_executable(fish ${SOURCE_FILES})
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64
fish_shell/fish_commands.c
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64
fish_shell/fish_commands.c
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@ -0,0 +1,64 @@
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//
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// Created by Antoine Bartuccio on 14/05/2017.
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//
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#include <stdio.h>
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#include <unistd.h>
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#include "fish_core.h"
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/* Necessary global variables */
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char * builtinCommandsStr[] = {
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"cd",
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"help",
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"exit"
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};
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builtinCommand *builtinCommands[] = {
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&fishCd,
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&fishHelp,
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&fishExit
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};
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char ** getBuiltinCommandsStr(){
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return builtinCommandsStr;
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}
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builtinCommand **getBuiltinCommands(){
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return builtinCommands;
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}
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int fishCd(WordArray *args) {
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if (args->size < 2){
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fprintf(stderr, "fish: Où sont les arguments de ta commande \"cd\" connard ?!\n");
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} else {
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if (chdir(args->words[1]) != 0){
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perror("fish");
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}
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}
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return 1;
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}
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int fishHelp(WordArray *args) {
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int i;
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printf("Bartuccio Antoine, Amalvy Arthur, Yann Chevanton\n");
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printf("Tape tes putains de noms de programmes et tes arguments de merde et tabasse ENTER !\n");
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printf("Les commandes suivantes sont internes :\nls");
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for (i=0; i < getNbBuiltins(); i++){
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printf("\t%s\n", builtinCommandsStr[i]);
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}
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printf("Et sinon pour le reste, RTFM !");
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if (args->size > 0)
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return 1;
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return 1;
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}
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int fishExit(WordArray *args) {
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if (args->size != 1)
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return 1;
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else
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return 0;
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}
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int getNbBuiltins() {
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return sizeof(builtinCommandsStr) / sizeof(char*);
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}
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24
fish_shell/fish_commands.h
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24
fish_shell/fish_commands.h
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@ -0,0 +1,24 @@
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//
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// Created by Antoine Bartuccio on 14/05/2017.
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//
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#ifndef FISH_FISH_COMMANDS_H
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#define FISH_FISH_COMMANDS_H
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#include "fish_core.h"
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/* Getters */
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char ** getBuiltinCommandsStr ();
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builtinCommand **getBuiltinCommands();
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int getNbBuiltins();
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/* Built in shell commands */
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int fishCd(WordArray * args);
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int fishHelp(WordArray * args);
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int fishExit(WordArray * args);
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#endif //FISH_FISH_COMMANDS_H
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@ -4,7 +4,8 @@
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "fish_lib.h"
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#include <unistd.h>
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#include "fish_core.h"
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#define FISH_BUFFER_SIZE 1024
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#define FISH_TOKENS " \t\r\n\a"
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@ -12,24 +13,20 @@
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void fishLoop(Settings * settings){
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char * line = NULL;
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WordArray * splited = NULL;
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int exited = 0;
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int i;
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int status = 1;
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while (!exited) {
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do {
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printf("%s", settings->PS1);
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line = fishReadLine();
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line = fishExpand(line);
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splited = split(line, FISH_TOKENS);
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for (i = 0; i < splited->size; i++) {
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printf("%s\n", splited->words[i]);
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if(!strcmp(splited->words[i], "exit"))
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exited = 1;
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}
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status = fishExecute(splited);
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freeWordArray(splited);
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free(line);
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}
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} while(status);
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}
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int countSeparators(char *string, char *separators) {
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@ -101,11 +98,14 @@ char *fishReadLine() {
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while (1){
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c = getchar();
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if (c == EOF || c == '\n'){
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line[position] = '\0';
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return line;
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} else {
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line[position] = (char) c;
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switch (c){
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case '\n':
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line[position] = '\0';
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return line;
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case EOF:
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exit(EXIT_SUCCESS);
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default:
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line[position] = (char) c;
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}
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position++;
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@ -134,8 +134,48 @@ Settings *getSettings() {
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fprintf(stderr, "fish: Error allocating fucking settings");
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exit(EXIT_FAILURE);
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}
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s->PS1 = strdup("~>");
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s->PS1 = strdup("\n~>");
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return s;
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}
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int fishLoad(WordArray *array) {
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pid_t pid;
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int status;
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pid = fork();
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if (pid == 0){
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/* Executes only in the child process */
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if (execvp(array->words[0], array->words) == -1){
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/* Error during system call */
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perror("fish");
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}
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exit(EXIT_FAILURE);
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} else if (pid < 0){
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/* Fork failed */
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perror("fish");
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} else {
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/* Handle parent process */
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/* Wait for the child process to finish */
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do {
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waitpid(pid, &status, WUNTRACED);
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} while (!WIFEXITED(status) && !WIFSIGNALED(status));
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}
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return 1;
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}
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int fishExecute(WordArray *array) {
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int i;
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if (array->size < 0)
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return 1;
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for (i=0; i < getNbBuiltins(); i++){
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if (!strcmp(array->words[0], getBuiltinCommandsStr()[i])){
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return getBuiltinCommands()[i](array);
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}
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}
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return fishLoad(array);
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}
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@ -2,17 +2,12 @@
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// Created by Antoine Bartuccio on 11/05/2017.
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//
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#ifndef FISH_FISH_LIB_H
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#define FISH_FISH_LIB_H
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#ifndef FISH_FISH_CORE_H
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#define FISH_FISH_CORE_H
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typedef struct {
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char ** words;
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int size;
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} WordArray;
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typedef struct {
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char *PS1;
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} Settings;
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#include "fish_types.h"
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#include "fish_commands.h"
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/* WordArray functions */
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@ -34,4 +29,8 @@ int countSeparators(char *string, char *separators);
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char * fishExpand(char* line);
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#endif //FISH_FISH_LIB_H
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int fishLoad(WordArray *array);
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int fishExecute(WordArray *array);
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#endif //FISH_FISH_CORE_H
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22
fish_shell/fish_types.h
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22
fish_shell/fish_types.h
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//
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// Created by Antoine Bartuccio on 14/05/2017.
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//
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#ifndef FISH_FISH_TYPES_H
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#define FISH_FISH_TYPES_H
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/* Custom types */
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typedef struct {
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char ** words;
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int size;
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} WordArray;
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typedef struct {
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char *PS1;
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} Settings;
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typedef int (builtinCommand) (WordArray*);
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#endif //FISH_FISH_TYPES_H
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