Support de l'opérateur & et support basique du | sur seulement 1 niveau

fish_shell/fish_commands.c

@@ -10,6 +10,7 @@
 
 /* Necessary global variables */
 char * builtinCommandsStr[] = {
+		(char *) "clear",
 		(char *) "kek",
 		(char *) "cd",
 		(char *) "help",
@@ -17,6 +18,7 @@ char * builtinCommandsStr[] = {
 };
 
 builtinCommand *builtinCommands[] = {
+		&fishClear,
 		&fishKek,
 		&fishCd,
 		&fishHelp,
@@ -81,3 +83,16 @@ int fishKek(WordArray *args) {
 int getNbBuiltins() {
 	return sizeof(builtinCommandsStr) / sizeof(char*);
 }
+
+void fishSignalHandler(int s) {
+	switch (s) {
+		default:
+			break;
+	}
+}
+
+int fishClear(WordArray *args) {
+	if (args != NULL) freeWordArray(args);
+	system("clear");
+	return EXIT_SUCCESS;
+}

fish_shell/fish_commands.h

@@ -23,4 +23,8 @@ int fishExit(WordArray * args);
 
 int fishKek(WordArray *args);
 
+int fishClear(WordArray *args);
+
+void fishSignalHandler(int s);
+
 #endif //FISH_FISH_COMMANDS_H

fish_shell/fish_core.c

@@ -1,25 +1,57 @@
 //
 // Created by Antoine Bartuccio on 11/05/2017.
-// Dont forget that Antoine Bartuccio is a faggot since 1784 (tm)
 //
+
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
 #include <sys/wait.h>
+#include <signal.h>
+#include <pcre.h>
 #include "fish_core.h"
 #include "fish_globbing.h"
 #include "fish_types.h"
 
+pipe_redirection * getRedirection(){
+	static pipe_redirection * redirection = NULL;
+	static char template[] = "/tmp/fishXXXXXX";
+
+	if (redirection == NULL){
+		redirection = (pipe_redirection*) malloc(sizeof(pipe_redirection));
+		if (redirection == NULL) crash();
+		redirection->file_name = strdup(template);
+		redirection->tmp_file = mkstemp(redirection->file_name);
+		redirection->to_use = 0;
+		redirection->read = 0;
+	}
+
+	return redirection;
+
+}
+
+void freeRedirection(){
+	pipe_redirection * redirection = getRedirection();
+	close(redirection->tmp_file);
+	unlink(redirection->file_name);
+	remove(redirection->file_name);
+	free(redirection->file_name);
+	free(redirection);
+}
+
+
 void fishLoop(Settings * settings){
 	char * line = NULL;
 	WordList* splited = NULL;
 	int status = 1;
+	pipe_redirection *r = getRedirection();
 
     do {
         printf("%s", settings->PS1);
         line = fishReadLine();
 
+		r->to_use = 0;
+		r->read = 0;
 		splited = split(line, (char*) FISH_TOKENS);
 		splited = fishExpand(splited);
 
@@ -30,20 +62,24 @@ void fishLoop(Settings * settings){
 	} while(status != EXIT_SIGNAL);
 }
 
-int countSeparators(char *string, char *separators) {
+int countSeparators(char *string, char *regex) {
+	const char* error;
+	int error_offset;
+	int ovector[100];
 	int nb = 0;
-	int i = 0;
+	int string_size = (int) strlen(string);
-	int k = 0;
+	int ovector_size = 100;
-	while (string[i] != '\0'){
+	int offset = 0;
-		while (separators[k] != '\0'){
+	pcre *re = pcre_compile(regex, 0, &error, &error_offset, 0);
-			if (string[i] == separators[k]){
+
+	if (!re) crash();
+
+	while (pcre_exec(re, 0, string, string_size, offset, 0, ovector, ovector_size) >= 0){
+		offset = ovector[1];
 		nb++;
 	}
-			k++;
+	pcre_free(re);
-		}
+
-		i++;
-		k = 0;
-	}
 	return nb;
 }
 
@@ -66,24 +102,26 @@ WordList * split(char *string, char *separator){
 }
 
 char *fishReadLine() {
+	struct sigaction signal_handler;
 	size_t bufferSize = FISH_BUFFER_SIZE;
 	int position = 0;
 	char *line = (char*) malloc(sizeof(char*) * bufferSize);
 	int c;
 
-	if (line == NULL){
+	if (line == NULL) crash();
-		crash();
+
-	}
+	signal_handler.sa_handler = fishSignalHandler;
+	sigemptyset(&signal_handler.sa_mask);
+	signal_handler.sa_flags = 0;
 
 	while (1){
+		sigaction(SIGINT, &signal_handler, NULL);
 		c = getchar();
 
 		switch (c){
 			case '\n':
 				line[position] = '\0';
 				return line;
-			case EOF:
-				exit(EXIT_SUCCESS);
 			default:
 				line[position] = (char) c;
 		}
@@ -91,7 +129,7 @@ char *fishReadLine() {
 		position++;
 
 		if ((size_t) position > bufferSize){
-			bufferSize+=bufferSize;
+			bufferSize += bufferSize;
 			line = (char*) realloc(line, bufferSize);
 			if (line == NULL){
 				crash();
@@ -99,7 +137,6 @@ char *fishReadLine() {
 		}
 	}
 
-
 	return NULL;
 }
 
@@ -107,9 +144,17 @@ char *fishReadLine() {
 int fishLoad(WordArray *array) {
 	pid_t pid;
 	int status = 1;
+	pipe_redirection *redirection = getRedirection();
 
 	pid = fork();
 	if (pid == 0){
+		if (redirection->to_use){
+			if (redirection->read){
+				dup2(redirection->tmp_file, STDIN_FILENO);
+			} else {
+				dup2(redirection->tmp_file, STDOUT_FILENO);
+			}
+		}
 		/* Executes only in the child process */
 		if (execvp(array->words[0], array->words) == -1){
 			/* Error during system call */
@@ -121,7 +166,6 @@ int fishLoad(WordArray *array) {
 		perror("fish");
 	} else {
 		/* Handle parent process */
-
 		/* Wait for the child process to finish */
 		do {
 			waitpid(pid, &status, WUNTRACED);
@@ -129,6 +173,7 @@ int fishLoad(WordArray *array) {
 		if (status) fprintf(stderr, "%s\n", getInsult());
 	}
 	freeWordArray(array);
+
 	return status;
 }
 
@@ -136,6 +181,8 @@ int fishExecute(WordList *list) {
 	WordList *splited = NULL;
 	shell_operator op = NONE;
 	WordArray *array = NULL;
+	pipe_redirection *redirection = NULL;
+	int pid;
 	int signal = 1;
 
 	splited = parseWordList(list, &op);
@@ -160,6 +207,32 @@ int fishExecute(WordList *list) {
 			signal = fishExecute(list);
 			if (signal != EXIT_SIGNAL) signal = fishExecute(splited);
 			break;
+		case PIPE:
+			redirection = getRedirection();
+			redirection->to_use = 1;
+			redirection->read = 0;
+			fishExecute(list);
+			lseek(redirection->tmp_file, 0L, 0);
+			redirection->read = 1;
+			signal = fishExecute(splited);
+			lseek(redirection->tmp_file, 0L, 0);
+			ftruncate(redirection->tmp_file, 0);
+			redirection->to_use = 0;
+			break;
+		case BACKGROUND_PROCESS:
+			printf("Exécution en tache de fond\n");
+			pid = fork();
+			if(pid == 0){
+				exit(fishExecute(list));
+			} else if (pid < 0){
+				perror("fish");
+			} else if (splited->size > 0) signal = fishExecute(splited);
+			else {
+				freeWordList(splited);
+				splited = NULL;
+				signal = EXIT_SUCCESS;
+			}
+			break;
 		default:
 			array = wordListToWordArray(list);
 			signal = loadRightCommand(array);
@@ -197,12 +270,16 @@ WordList * parseWordList(WordList *list, shell_operator *an_operator) {
 	char *op_str[] = {
 			(char*) ";",
 			(char*) "\\|\\|",
-			(char*) "&&"
+			(char*) "&&",
+			(char*) "\\|",
+			(char*) "&"
 	};
 	shell_operator op[] = {
 			OR,
 			REVERSE_AND,
-			AND
+			AND,
+			PIPE,
+			BACKGROUND_PROCESS
 	};
 	WordList *newList = NULL;
 	int max = sizeof(op_str) / sizeof(char*);

fish_shell/fish_core.h

@@ -27,7 +27,7 @@ void fishLoop(Settings * settings);
 
 char * fishReadLine();
 
-int countSeparators(char *string, char *separators); // Tested
+int countSeparators(char *string, char *regex); // Tested
 
 int fishLoad(WordArray *array);
 
@@ -37,4 +37,12 @@ WordList *parseWordList(WordList *list, shell_operator *an_operator);
 
 int loadRightCommand(WordArray *array);
 
+/* IN/OUT functions */
+
+/* Get a global pipe_redirection structure */
+pipe_redirection * getRedirection();
+
+/* Free redirection structure DO NOT TRY TO GET REDIRECTION AFTER */
+void freeRedirection();
+
 #endif //FISH_FISH_CORE_H

fish_shell/fish_types.h

@@ -47,6 +47,12 @@ typedef struct {
 	struct passwd* passwd;
 } Settings;
 
+typedef struct {
+	int to_use;
+	int read;
+	int tmp_file;
+	char * file_name;
+} pipe_redirection;
 
 typedef int (builtinCommand) (WordArray*);
 

fish_shell_tests/FishCoreTests.cpp

@@ -29,5 +29,8 @@ TEST(command_split, split){
 }
 
 TEST(count_tokens, countSeparators){
-	ASSERT_TRUE(countSeparators((char*) "Ceci est un super \n test", (char*) FISH_TOKENS) == 6);
+	ASSERT_TRUE(countSeparators((char*) "Ceci est un super \n test", (char*) " ") == 5);
+	ASSERT_TRUE(countSeparators((char*) "patate | patate| patatine", (char*) "\\|") == 2);
+	ASSERT_TRUE(countSeparators((char*) "patate | patate| patatine |", (char*) "\\|") == 3);
+	ASSERT_TRUE(countSeparators((char*) "patate | patate|| patatine |", (char*) "\\|[^\\|]") == 2);
 }