| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /* | ||
| 2 | ** EPITECH PROJECT, 2024 | ||
| 3 | ** 42sh | ||
| 4 | ** File description: | ||
| 5 | ** The file containing the unsetenv builtin | ||
| 6 | */ | ||
| 7 | /** | ||
| 8 | * @file unsetenv.c | ||
| 9 | * @brief The file containing the unsetenv builtin | ||
| 10 | */ | ||
| 11 | |||
| 12 | #include "../../include/myshell.h" | ||
| 13 | |||
| 14 | /** | ||
| 15 | * @brief Skip the variables to delete | ||
| 16 | * @param args The command arguments | ||
| 17 | * @param env The actual env | ||
| 18 | * @param index The index of the env | ||
| 19 | * @return <b>void</b> | ||
| 20 | */ | ||
| 21 | 47 | static void skip_variables(char **args, char **env, int *index) | |
| 22 | { | ||
| 23 |
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94 | for (int var_index = 1; args[var_index] != NULL && env[*index] != NULL; |
| 24 | 47 | var_index++) { | |
| 25 |
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47 | if (my_strncmp(env[*index], args[var_index], |
| 26 | 47 | my_strlen(args[var_index])) == 0 | |
| 27 |
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1 | && env[*index][my_strlen(args[var_index])] == '=') |
| 28 | 1 | (*index)++; | |
| 29 | } | ||
| 30 | 47 | } | |
| 31 | |||
| 32 | /** | ||
| 33 | * @brief Search and delete the variable in the env | ||
| 34 | * @param args The command arguments | ||
| 35 | * @param env The actual env | ||
| 36 | * @param new_env The new env | ||
| 37 | * @return <b>void</b> | ||
| 38 | */ | ||
| 39 | 27 | static void search_and_delete(char **args, char **env, char **new_env) | |
| 40 | { | ||
| 41 | 27 | int index_new = 0; | |
| 42 | |||
| 43 |
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74 | for (int index = 0; env[index] != NULL; index++) { |
| 44 | 47 | skip_variables(args, env, &index); | |
| 45 | 47 | new_env[index_new] = env[index]; | |
| 46 | 47 | index_new++; | |
| 47 | } | ||
| 48 | 27 | new_env[index_new] = NULL; | |
| 49 | 27 | } | |
| 50 | |||
| 51 | /** | ||
| 52 | * @brief The unsetenv builtin | ||
| 53 | * @param mysh The shell structure | ||
| 54 | * @return <b>int</b> <u>0</u> if the command succeed, <u>1</u> otherwise | ||
| 55 | */ | ||
| 56 | 27 | int exec_unsetenv(mysh_t *mysh) | |
| 57 | { | ||
| 58 | char **new_env; | ||
| 59 | |||
| 60 |
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27 | if (mysh->args[1] == NULL) { |
| 61 | ✗ | my_fprintf(2, "unsetenv: Too few arguments.\n"); | |
| 62 | ✗ | return 1; | |
| 63 | } | ||
| 64 | 27 | new_env = CALLOC(my_array_len((void **)mysh->env) + 1, sizeof(char *)); | |
| 65 | 27 | search_and_delete(mysh->args, mysh->env, new_env); | |
| 66 | 27 | mysh->env = new_env; | |
| 67 | 27 | return 0; | |
| 68 | } | ||
| 69 |