Implémentation des premiers opérateurs

CMakeLists.txt

@@ -47,7 +47,10 @@ include_directories(
 set(CMAKE_C_STANDARD 99)
 set(CMAKE_C_FLAGS "-Wall -Werror -pedantic -fpic -Wextra -Wshadow")
 
-add_subdirectory(fish_shell)
+set(SOURCE_FILES fish_shell/main.c fish_shell/fish_types.h fish_shell/fish_core.h fish_shell/fish_core.c fish_shell/fish_commands.c fish_shell/fish_commands.h fish_shell/fish_globbing.c fish_shell/fish_globbing.h fish_shell/fish_utils.c fish_shell/fish_utils.h)
+add_executable(fish ${SOURCE_FILES})
+
+#add_subdirectory(fish_shell)
 
 add_subdirectory(fish_shell_tests)
 

fish_shell/CMakeLists.txt

@@ -1,8 +0,0 @@
-cmake_minimum_required(VERSION 3.7)
-project(fish_shell)
-
-set(CMAKE_C_STANDARD 99)
-set(CMAKE_C_FLAGS "-Wall -Werror -pedantic -fpic -Wextra -Wshadow")
-
-set(SOURCE_FILES main.c fish_types.h fish_core.h fish_core.c fish_commands.c fish_commands.h fish_globbing.c fish_globbing.h fish_utils.c fish_utils.h)
-add_executable(fish ${SOURCE_FILES})

fish_shell/fish_commands.c

@@ -3,7 +3,9 @@
 //
 #include <stdio.h>
 #include <unistd.h>
+#include <stdlib.h>
 #include "fish_core.h"
+#include "fish_types.h"
 
 /* Necessary global variables */
 char * builtinCommandsStr[] = {
@@ -35,11 +37,12 @@ int fishCd(WordArray *args) {
 			perror("fish");
 		}
 	}
-	return 1;
+	return 0;
 }
 
 int fishHelp(WordArray *args) {
 	int i;
+	args->size = args->size;
 	printf("Bartuccio Antoine, Amalvy Arthur, Yann Chevanton\n");
 	printf("Tape tes putains de noms de programmes et tes arguments de merde et tabasse ENTER !\n");
 	printf("Les commandes suivantes sont internes :\n");
@@ -47,16 +50,13 @@ int fishHelp(WordArray *args) {
 		printf("\t%s\n", builtinCommandsStr[i]);
 	}
 	printf("Et sinon pour le reste, RTFM !");
-	if (args->size > 0)
-		return 1;
-	return 1;
+	return 0;
 }
 
 int fishExit(WordArray *args) {
-	if (args->size != 1)
-		return 1;
-	else
-		return 0;
+	args->size = args->size;
+	exit(EXIT_SUCCESS);
+
 }
 
 int getNbBuiltins() {

fish_shell/fish_core.c

@@ -9,11 +9,11 @@
 #include <sys/wait.h>
 #include "fish_core.h"
 #include "fish_globbing.h"
+#include "fish_types.h"
 
 void fishLoop(Settings * settings){
 	char * line = NULL;
 	WordList* splited = NULL;
-	WordArray* array = NULL;
 	int status = 1;
 
     do {
@@ -23,11 +23,10 @@ void fishLoop(Settings * settings){
         splited = split(line, (char*) FISH_TOKENS);
 		splited = fishExpand(splited);
 
-		array = wordListToWordArray(splited);
-		status = fishExecute(array);
+		status = fishExecute(splited);
 
-		freeWordArray(array);
 		free(line);
+
 	} while(status);
 }
 
@@ -124,16 +123,16 @@ void freeSettings(Settings *settings){
 
 int fishLoad(WordArray *array) {
 	pid_t pid;
-	int status;
+	int status = 1;
 
 	pid = fork();
 	if (pid == 0){
 		/* Executes only in the child process */
 		if (execvp(array->words[0], array->words) == -1){
 			/* Error during system call */
-			perror("fish");
+			exit(EXIT_FAILURE);
 		}
-		exit(EXIT_FAILURE);
+		exit(EXIT_SUCCESS);
 	} else if (pid < 0){
 		/* Fork failed */
 		perror("fish");
@@ -144,21 +143,66 @@ int fishLoad(WordArray *array) {
 		do {
 			waitpid(pid, &status, WUNTRACED);
 		} while (!WIFEXITED(status) && !WIFSIGNALED(status));
+		if (status) fprintf(stderr, "%s\n", getInsult());
+	}
+	return status;
+}
+
+int fishExecute(WordList *list) {
+	WordList *splited = NULL;
+	shell_operator op = NONE;
+	WordArray *array = NULL;
+
+	splited = parseWordList(list, &op);
+	array = wordListToWordArray(list);
+
+	switch (op) {
+		case AND:
+			if (!loadRightCommand(array)) fishExecute(splited);
+			else freeWordList(splited);
+			break;
+		case OR:
+			loadRightCommand(array);
+			fishExecute(splited);
+			break;
+		default:
+			loadRightCommand(array);
 	}
 
 	return 1;
 }
 
-int fishExecute(WordArray *array) {
+int loadRightCommand(WordArray *array){
 	int i;
-	if (array->size < 0)
-		return 1;
-
-	for (i=0; i < getNbBuiltins(); i++){
-		if (!strcmp(array->words[0], getBuiltinCommandsStr()[i])){
+	if (array->size <= 0) return 1;
+	for (i = 0; i < getNbBuiltins(); i++) {
+		if (!strcmp(array->words[0], getBuiltinCommandsStr()[i])) {
 			return getBuiltinCommands()[i](array);
 		}
 	}
-
 	return fishLoad(array);
 }
+
+WordList * parseWordList(WordList *list, shell_operator *an_operator) {
+	char *op_str[] = {
+			(char*) "&&",
+			(char*) "||"
+	};
+	shell_operator op[] = {
+			AND,
+			OR
+	};
+	WordList *newList = NULL;
+	int max = sizeof(op_str) / sizeof(char*);
+	int i = 0;
+
+	while (i < max && newList == NULL){
+		newList = splitWordList(list, op_str[i]);
+		i++;
+	}
+
+	if (newList != NULL) *an_operator = op[i-1];
+	else *an_operator = NONE;
+
+	return newList;
+}

fish_shell/fish_core.h

@@ -32,9 +32,12 @@ char * fishReadLine();
 
 int countSeparators(char *string, char *separators); // Tested
 
-
 int fishLoad(WordArray *array);
 
-int fishExecute(WordArray *array);
+int fishExecute(WordList *list);
+
+WordList *parseWordList(WordList *list, shell_operator *an_operator);
+
+int loadRightCommand(WordArray *array);
 
 #endif //FISH_FISH_CORE_H

fish_shell/fish_types.h

@@ -7,6 +7,14 @@
 
 /* Custom types */
 
+typedef enum {
+	NONE,
+	PIPE,
+	BACKGROUND_PROCESS,
+	AND,
+	OR
+} shell_operator ;
+
 typedef struct {
 	char ** words;
 	int size;

fish_shell/fish_utils.c

@@ -6,6 +6,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <time.h>
+#include "fish_utils.h"
 #include "fish_types.h"
 
 void crash(){
@@ -30,7 +31,11 @@ char *getInsult(){
 	char *insults[] = {
 			(char *) "Apprend à écrire crétin !",
 			(char *) "Bolos !",
-			(char *) "Mois aussi je sais écrire de la merde, pourtant je le fait pas !"
+			(char *) "Mois aussi je sais écrire de la merde, pourtant je le fait pas !",
+			(char *) "Oh ! Une erreur ! Comme ta vie en fait...",
+			(char *) "Nul !",
+			(char *) "Pense à aller à l'école un jour",
+			(char *) "Et après on dit que c'est la faute de l'ordinateur..."
 	};
 	if (!init){
 		srand((unsigned int) time(NULL));
@@ -84,20 +89,11 @@ void addWordList(WordList *list, char *word) {
 }
 
 void removeWordList(WordList *list) {
-	WordListElement *current = list->last;
-	if (current != NULL){
-		list->last = current->previous;
-		if (current->previous != NULL)
-			current->previous->next = NULL;
-		if (current->word != NULL)
-			free(current->word);
-		free(current);
-		list->size--;
-	}
+	if (list != NULL) removeWordListElem(list, list->last);
 }
 
 void freeWordList(WordList *list) {
-	while (list->size != 0)
+	while (list != NULL && list->size != 0)
 		removeWordList(list);
 	free(list);
 }
@@ -138,3 +134,76 @@ WordList *wordArrayToWordList(WordArray *array) {
 
 	return list;
 }
+
+void removeWordListElem(WordList *list, WordListElement *elem) {
+	if (list != NULL && elem != NULL){
+
+		if (list->first == elem && list->last == elem){
+			list->first = NULL;
+			list->last = NULL;
+
+		} else if (list->first == elem){
+			list->first = elem->next;
+			elem->previous = NULL;
+
+		} else if (list->last == elem){
+			list->last = elem->previous;
+			elem->previous->next = NULL;
+
+		} else {
+			elem->next->previous = elem->previous;
+			elem->previous->next = elem->next;
+		}
+
+		list->size--;
+
+		if (elem->word != NULL)
+			free(elem->word);
+
+		free(elem);
+	}
+}
+
+WordList *sliceWordList(WordList *list, int min_index, int max_index) {
+	WordList *newList = createWordList();
+	WordListElement *elem = NULL;
+	WordListElement *tmp = NULL;
+	int i=0;
+
+	if (list == NULL || min_index > list->size || max_index > list->size) return newList;
+	else {
+		elem = list->first;
+		while (i < max_index){
+
+			tmp = elem->next;
+			if (i >= min_index){
+				addWordList(newList, elem->word);
+				removeWordListElem(list, elem);
+			}
+
+			elem = tmp;
+
+			i++;
+		}
+	}
+	return newList;
+}
+
+WordList *splitWordList(WordList *list, char *token) {
+	WordList * newList = NULL;
+	WordListElement * current = list->first;
+	int i = 0;
+
+	while (current != NULL){
+		if (!strcmp(current->word, token)){
+			newList = sliceWordList(list, i + 1, list->size);
+			removeWordListElem(list, current);
+			current = NULL;
+		}
+		else current = current->next;
+		i++;
+	}
+
+	return newList;
+}
+

fish_shell/fish_utils.h

@@ -15,14 +15,20 @@ void freeWordArray(WordArray *array); // Tested
 
 WordList * createWordList(); // Tested
 
+WordList * sliceWordList(WordList *list, int min_index, int max_index);
+
 void addWordList(WordList *list, char *word); // Tested
 
 void removeWordList(WordList *list); // Tested
 
+void removeWordListElem(WordList *list, WordListElement *elem);
+
 void freeWordList(WordList *list); // Tested
 
 WordArray * wordListToWordArray(WordList *list); // Tested
 
 WordList * wordArrayToWordList(WordArray * array); // Tested
 
+WordList * splitWordList(WordList *list, char * tokens);
+
 #endif //FISH_FISH_UTILS_H