From b073baa06b363206a6a2b94fa9aaf96db9809802 Mon Sep 17 00:00:00 2001
From: starnakin <camille@chauvet.pro>
Date: Tue, 4 Jul 2023 15:54:19 +0200
Subject: [PATCH] add: alias

---
 src/alias/alias.c                | 61 ++++++++++++++++++++++++++++++++
 src/alias/alias.h                | 14 ++++++++
 src/builtin-exec/builtin.c       | 28 ++++++---------
 src/builtin-exec/builtin.h       | 15 ++++++--
 src/builtin-exec/builtin_alias.c | 49 +++++++++++++++++++++++++
 src/config.h                     |  4 +++
 src/data/data.h                  | 11 ++++++
 src/exec/exec.c                  | 14 +++-----
 src/exec/exec.h                  |  6 ++--
 src/input/input.c                | 10 +++---
 src/input/input.h                |  3 +-
 src/main.c                       | 26 +++++++++-----
 src/parsing/parsing.c            | 30 ++++++++++------
 src/parsing/parsing.h            |  5 ++-
 14 files changed, 217 insertions(+), 59 deletions(-)
 create mode 100644 src/alias/alias.c
 create mode 100644 src/alias/alias.h
 create mode 100644 src/builtin-exec/builtin_alias.c
 create mode 100644 src/config.h
 create mode 100644 src/data/data.h

diff --git a/src/alias/alias.c b/src/alias/alias.c
new file mode 100644
index 0000000..999fc37
--- /dev/null
+++ b/src/alias/alias.c
@@ -0,0 +1,61 @@
+#include "../../lib/bozolib/bozolib.h"
+#include "./alias.h"
+#include <stdlib.h>
+
+lst** aliases_init()
+{
+	lst** aliases;
+
+	aliases = malloc(sizeof(lst*));
+	*aliases = NULL;
+	return aliases;
+}
+
+int add_alias(lst** root, const char* key, const char* value)
+{
+	lst* nouveau;
+	alias_t* alias;
+
+	alias = malloc(sizeof(alias_t));
+	if (alias == NULL)
+		return 1;
+	nouveau = malloc(sizeof(lst));
+	if (nouveau == NULL)
+	{
+		free(alias);
+		return 1;
+	}
+	alias->key = strdup(key);
+	if (alias->key == NULL)
+	{
+		free(alias->key);
+		free(alias);
+		return 1;
+	}
+	alias->value = strdup(value);
+	if (alias->key == NULL)
+	{
+		free(alias->key);
+		free(alias->value);
+		free(alias);
+		return 1;
+	}
+	nouveau->content = alias;
+	lst_addback(root, nouveau);
+	return 0;
+}
+
+char* get_alias(lst** aliases, const char* key)
+{
+	lst* current = *aliases;
+	alias_t* content;
+
+	while (current != NULL)
+	{
+		content = current->content;
+		if (strcmp(key, content->key) == 0)
+			return content->value;
+		current = current->next;
+	}
+	return NULL;
+}
diff --git a/src/alias/alias.h b/src/alias/alias.h
new file mode 100644
index 0000000..8c73e54
--- /dev/null
+++ b/src/alias/alias.h
@@ -0,0 +1,14 @@
+#pragma once
+
+#include "../../lib/bozolib/bozolib.h"
+
+typedef struct s_alias
+{
+	char* key;
+	char* value;
+} alias_t;
+
+lst** aliases_init();
+lst** aliases_save(lst** aliases);
+char* get_alias(lst** aliases, const char* key);
+int add_alias(lst** root, const char* key, const char* value);
diff --git a/src/builtin-exec/builtin.c b/src/builtin-exec/builtin.c
index 48914ae..4a9a772 100644
--- a/src/builtin-exec/builtin.c
+++ b/src/builtin-exec/builtin.c
@@ -1,18 +1,8 @@
-#include <sys/wait.h>
-#include <limits.h>
-#include <string.h>
-#include <stdlib.h>
-#include <stdio.h>
-#include "../cmd/cmd.h"
-#include <unistd.h>
-#include "../env/env.h"
-#include "../utils/utils.h"
-#include "../../lib/bozolib/bozolib.h"
-#include "../exec/exec.h"
+#include "./builtin.h"
 
 char* builtin_path(const char* executable)
 {
-  if (strcmp(executable, "cd") == 0 || strcmp(executable, "where") == 0); 
+  if (strcmp(executable, "cd") == 0 || strcmp(executable, "where") == 0 || strcmp(executable, "alias") == 0); 
   else
     return NULL;
   return strdup(executable);
@@ -22,12 +12,12 @@ int change_directory(char** args, lst** env)
 {
   char cwd[PATH_MAX];
   char* oldpwd = get_env_variable(env, "PWD"); 
-  if(len((void**)args)==1)
+  if (tablen((const void**)args)==1)
   {
     char* path = get_env_variable(env, "HOME");
     chdir(path);
   }
-  else if (len((void**)args)>2)
+  else if (tablen((const void**)args)>2)
   {
   dprintf(2, "cd : Trop d'arguments!\n");
     return 1;
@@ -45,7 +35,7 @@ int change_directory(char** args, lst** env)
 
 int where(char** args, lst** env)
 {
-  if (len((void**)args)==1)
+  if (tablen((const void**)args)==1)
   {
     dprintf(2, "where : Il faut au moins 1 argument!\n");
     return 1;
@@ -65,18 +55,20 @@ int where(char** args, lst** env)
   return 0;
 }
 
-int builtin_execute(cmd* input, lst** env)
+int builtin_execute(cmd* input, data_t *data, int fd_in, int fd_out)
 {
   if (strcmp(input->executable, "cd") == 0)
   {
-    change_directory(input->args, env);
+    change_directory(input->args, data->env);
     return 0;
   }
   else if(strcmp(input->executable, "where") == 0)
   {
-    where(input->args, env);
+    where(input->args, data->env);
     return 0;
   }
+  else if (strcmp(input->executable, "alias") == 0)
+	  return builtin_alias(fd_in, fd_out, data->aliases, input->args);
   else
   {
     return 1;
diff --git a/src/builtin-exec/builtin.h b/src/builtin-exec/builtin.h
index e5f15c6..bd8f3a2 100644
--- a/src/builtin-exec/builtin.h
+++ b/src/builtin-exec/builtin.h
@@ -1,9 +1,20 @@
 #pragma once
 
+#include <stdio.h>
+#include <limits.h>
+#include <unistd.h>
+
+#include "../env/env.h"
 #include "../cmd/cmd.h"
+#include "../data/data.h"
+#include "../alias/alias.h"
+#include "../exec/exec.h"
 #include "../../lib/bozolib/bozolib.h"
 
 char* builtin_path(const char* executable);
+int builtin_execute(cmd* input, data_t* data, int fd_in, int fd_out);
+
+int builtin_alias(int fd_in, int fd_out, lst** aliases, char** args);
 int change_directory(char** args, lst** env);
-int where(char** args);
-int builtin_execute(cmd* input, lst** env);
+int where(char** args, lst** env);
+
diff --git a/src/builtin-exec/builtin_alias.c b/src/builtin-exec/builtin_alias.c
new file mode 100644
index 0000000..efa6a2c
--- /dev/null
+++ b/src/builtin-exec/builtin_alias.c
@@ -0,0 +1,49 @@
+#include "./builtin.h"
+#include <stddef.h>
+#include <stdio.h>
+#include <string.h>
+
+static void print_aliases(lst** aliases, int fd_out)
+{
+	lst* current = *aliases;
+	alias_t* content;
+
+	while (current != NULL)
+	{
+		content = current->content;
+		dprintf(fd_out, "%s='%s'\n", content->key, content->value);
+		current = current->next;
+	}
+}
+int builtin_alias(int fd_in, int fd_out, lst** aliases, char **args)
+{
+	const char* equal;
+	char* result;
+	char* key;
+	(void)fd_in;
+	if (tablen((const void**) args) == 1)
+		print_aliases(aliases, fd_out);
+	for (size_t i = 1; args[i] != NULL; i++)
+	{
+		equal = strchr(args[i], '=');
+		if (equal == NULL)
+		{
+			result = get_alias(aliases, args[i]);
+			if (result != NULL)
+				dprintf(fd_out, "%s=%s\n", args[i], result);
+		}
+		else
+		{
+			key = strndup(args[i], equal - args[i]);
+			if (key == NULL)
+				return 1;
+			if (add_alias(aliases, key, equal + 1))
+			{
+				free(key);
+				return 1;
+			}
+			free(key);
+		}
+	}
+	return 0;
+}
diff --git a/src/config.h b/src/config.h
new file mode 100644
index 0000000..be979f6
--- /dev/null
+++ b/src/config.h
@@ -0,0 +1,4 @@
+#pragma once
+
+#define ZZSH_HISTORY_PATH "~/.config/history"
+#define ALIASES_SAVE_PATH "~/.config/aliases"
diff --git a/src/data/data.h b/src/data/data.h
new file mode 100644
index 0000000..37ef7cb
--- /dev/null
+++ b/src/data/data.h
@@ -0,0 +1,11 @@
+#pragma once
+
+#include "../../lib/bozolib/bozolib.h"
+
+typedef struct s_data
+{
+	const char* computor_name;
+	int			status_code;
+	lst**		env;
+	lst**		aliases;
+} data_t;
diff --git a/src/exec/exec.c b/src/exec/exec.c
index c291681..ae09f17 100644
--- a/src/exec/exec.c
+++ b/src/exec/exec.c
@@ -9,13 +9,7 @@
 #include "../utils/utils.h"
 #include "../../lib/bozolib/bozolib.h"
 #include "../builtin-exec/builtin.h"
-
-int len(void** list)
-{
-  int index;
-   for (index = 0; list[index]!=NULL; index++);
-  return index;
-}
+#include "../data/data.h"
 
 int execute(cmd* input, lst** env)
 {
@@ -78,7 +72,7 @@ char* get_executable_path(const char* executable, lst** env)
   return NULL;
 }
 
-int cmds_list_exec(lst** cmds, lst** env)
+int cmds_list_exec(lst** cmds, data_t *data)
 {
 	lst* current = *cmds;
 	cmd* content;
@@ -97,8 +91,8 @@ int cmds_list_exec(lst** cmds, lst** env)
 			;
 		else if (content->executable == NULL)
 			dprintf(2, "zzsh: command not found: %s\n", content->args[0]);
-		else if (builtin_execute(content, env) == 1)
-			execute(content, env);
+		else if (builtin_execute(content, data, fds[0], fds[1]) == 1)
+			execute(content, data->env);
 		current = current->next;
 	}
 	return 0;
diff --git a/src/exec/exec.h b/src/exec/exec.h
index 6df14b1..7ee12df 100644
--- a/src/exec/exec.h
+++ b/src/exec/exec.h
@@ -2,9 +2,9 @@
 
 #include "../cmd/cmd.h"
 #include "../../lib/bozolib/bozolib.h"
+#include "../data/data.h"
 
-int cmds_list_exec(lst** cmds, lst** env);
+int cmds_list_exec(lst** cmds, data_t *data);
 int execute(cmd* input, lst** env);
-int builtin_execute(cmd* input, lst** env);
-int len(void** list);
+int builtin_execute(cmd* input, data_t* data, int fd_int, int fd_out);
 char* get_executable_path(const char* executable, lst** env);
diff --git a/src/input/input.c b/src/input/input.c
index b49fb74..0dc6980 100644
--- a/src/input/input.c
+++ b/src/input/input.c
@@ -1,7 +1,7 @@
 #include "./input.h"
 #include <readline/readline.h>
 
-static char* get_prompt(lst** env)
+static char* get_prompt(data_t *data)
 {
 	char* out;
 	char cwd[PATH_MAX];
@@ -18,8 +18,8 @@ static char* get_prompt(lst** env)
   {
     *first_line_return = '\0';
   }
-  char* user = get_env_variable(env, "USER");
-	char* home = get_env_variable(env, "HOME");
+  char* user = get_env_variable(data->env, "USER");
+	char* home = get_env_variable(data->env, "HOME");
 	if (strncmp(home, cwd, strlen(home)) == 0)
 	{
 		strcpy(cwd, "~");
@@ -58,12 +58,12 @@ static void finisher(char** strs)
 	}
 }
 
-char *get_user_input(lst** env)
+char *get_user_input(data_t *data)
 {
 	char *prompt;
 	char *input;
 	
-	prompt = get_prompt(env);
+	prompt = get_prompt(data);
 	if (prompt == NULL)
 		return NULL;
 	input = readline(prompt);
diff --git a/src/input/input.h b/src/input/input.h
index 58bdcc9..b940bf4 100644
--- a/src/input/input.h
+++ b/src/input/input.h
@@ -10,5 +10,6 @@
 #include "../../lib/bozolib/bozolib.h"
 #include "../utils/utils.h"
 #include "../env/env.h"
+#include "../data/data.h"
 
-char *get_user_input(lst** env);
+char *get_user_input(data_t *data);
diff --git a/src/main.c b/src/main.c
index b67beeb..0993289 100644
--- a/src/main.c
+++ b/src/main.c
@@ -2,9 +2,11 @@
 #include "./input/input.h"
 #include <stddef.h>
 #include <stdio.h>
+#include "alias/alias.h"
 #include "cmd/cmd.h"
 #include "./exec/exec.h"
 #include "./parsing/parsing.h"
+#include "./data/data.h"
 
 void cmds_list_destroyer(lst*** cmds_list)
 {
@@ -16,34 +18,40 @@ void cmds_list_destroyer(lst*** cmds_list)
 int main(int ac, char **av, char **env_str)
 {
 	char *line;
-	lst** env;
+	data_t data;
 	lst*** cmds_list;
 
 	(void) av;
 	(void) ac;
-	env = env_init((const char **) env_str);
-	if (env == NULL)
+	data.env = env_init((const char **) env_str);
+	if (data.env == NULL)
 		return (1);
-	line = get_user_input(env);
+	data.aliases = aliases_init();
+	if (data.aliases == NULL)
+	{
+		lst_clear(data.env, &env_del);
+		return 1;
+	}
+	line = get_user_input(&data);
 	while (line != NULL)
 	{
-		cmds_list = parsing(line, env);
+		cmds_list = parsing(line, &data);
 		free(line);
 		if (cmds_list != NULL)
 		{
 			for (size_t i = 0; cmds_list[i] != NULL; i++)
 			{
-				if (cmds_list_exec(cmds_list[i], env))
+				if (cmds_list_exec(cmds_list[i], &data))
 				{
-					lst_clear(env, &env_del);
+					lst_clear(data.env, &env_del);
 					return 1;
 				}
 			}
 			cmds_list_destroyer(cmds_list);
 		}
-		line = get_user_input(env);
+		line = get_user_input(&data);
 	}
-	lst_clear(env, &env_del);
+	lst_clear(data.env, &env_del);
 	return (0);
  
 }
diff --git a/src/parsing/parsing.c b/src/parsing/parsing.c
index 56cdfc2..1600c22 100644
--- a/src/parsing/parsing.c
+++ b/src/parsing/parsing.c
@@ -1,14 +1,24 @@
 #include "parsing.h"
-char* parsing_executable(const char* executable, lst** env)
+
+char* parsing_executable(const char* executable, data_t *data)
 {
+	const char* tmp;
 	if (executable == NULL)
 		return NULL;
-	if (strchr("./", executable[0]))
-		return strdup(executable);
-	return (get_executable_path(executable, env));
+	if (executable[0] == '\\')
+		tmp = executable + 1;
+	else
+	{
+		tmp = get_alias(data->aliases, executable);
+		if (tmp == NULL)
+			tmp = executable;
+	}
+	if (strchr("./", tmp[0]))
+		return strdup(tmp);
+	return (get_executable_path(tmp, data->env));
 }
 
-int parsing_cmd(char *str, cmd* command, lst** env)
+int parsing_cmd(char *str, cmd* command, data_t *data)
 {
 	if (get_redirections(str, command))
 		return 1;
@@ -17,11 +27,11 @@ int parsing_cmd(char *str, cmd* command, lst** env)
 		return 1;
 	for (size_t i = 0; command->args[i]; i++)
 		quote_remover(command->args[i]);	
-	command->executable = parsing_executable(command->args[0], env);
+	command->executable = parsing_executable(command->args[0], data);
 	return 0;
 }
 
-lst **parsing_pipe(const char *str, lst** env)
+lst **parsing_pipe(const char *str, data_t *data)
 {
 	char** cmds_str;
 	lst** cmds;
@@ -39,7 +49,7 @@ lst **parsing_pipe(const char *str, lst** env)
 	current = *cmds;
 	for (size_t i = 0; cmds_str[i] != NULL; i++)
 	{
-		if (parsing_cmd(cmds_str[i], current->content, env))
+		if (parsing_cmd(cmds_str[i], current->content, data))
 		{
 			tab_free((void**)cmds_str);
 			return NULL;
@@ -50,7 +60,7 @@ lst **parsing_pipe(const char *str, lst** env)
 	return (cmds);
 }
 
-lst*** parsing(const char *line, lst** env)
+lst*** parsing(const char *line, data_t *data)
 {
 	char** line_commas;
 	lst*** tab;
@@ -67,7 +77,7 @@ lst*** parsing(const char *line, lst** env)
 	size_t i;
 	for (i = 0; line_commas[i] != NULL; i++)
 	{
-		tab[i] = parsing_pipe(line_commas[i], env);
+		tab[i] = parsing_pipe(line_commas[i], data);
 		if (tab[i] == NULL)
 		{
 			tab_free((void**) line_commas);
diff --git a/src/parsing/parsing.h b/src/parsing/parsing.h
index 267bf58..a79ab8a 100644
--- a/src/parsing/parsing.h
+++ b/src/parsing/parsing.h
@@ -3,4 +3,7 @@
 #include "../exec/exec.h"
 #include "../../lib/bozolib/bozolib.h"
 #include "../redirection/redirection.h"
-lst*** parsing(const char* str, lst** env);
+#include "../data/data.h"
+#include "../alias/alias.h"
+
+lst*** parsing(const char* str, data_t *data);