| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /* | ||
| 2 | ** EPITECH PROJECT, 2024 | ||
| 3 | ** 42sh | ||
| 4 | ** File description: | ||
| 5 | ** The file containing the setenv builtin | ||
| 6 | */ | ||
| 7 | /** | ||
| 8 | * @file setenv.c | ||
| 9 | * @brief The file containing the setenv builtin | ||
| 10 | */ | ||
| 11 | |||
| 12 | #include "../../include/myshell.h" | ||
| 13 | |||
| 14 | /** | ||
| 15 | * @brief Check if a string is valid to be an environment variable | ||
| 16 | * @param str The string to check | ||
| 17 | * @return <b>int</b> <u>1</u> if the string is valid, <u>0</u> otherwise | ||
| 18 | */ | ||
| 19 | 120 | int my_str_is_valid(char const *str) | |
| 20 | { | ||
| 21 |
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120 | if (my_strlen(str) == 0) |
| 22 | ✗ | return 1; | |
| 23 |
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598 | for (int i = 0; i < my_strlen(str); i++) { |
| 24 |
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479 | if (str[i] != '_' && |
| 25 |
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479 | (str[i] < '0' || (str[i] > '9' && str[i] < 'A') || |
| 26 |
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478 | (str[i] > 'Z' && str[i] < 'a') || str[i] > 'z')) |
| 27 | 1 | return 0; | |
| 28 | } | ||
| 29 | 119 | return 1; | |
| 30 | } | ||
| 31 | |||
| 32 | /** | ||
| 33 | * @brief Display an error message if the variable name is invalid | ||
| 34 | * @param var The variable name | ||
| 35 | * @return <b>int</b> <u>1</u> if the variable name is invalid, | ||
| 36 | * <u>0</u> otherwise | ||
| 37 | */ | ||
| 38 | 125 | static int error_handling(char *var) | |
| 39 | { | ||
| 40 |
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125 | if (my_char_is_alpha(var[0]) == 0 && var[0] != '_') { |
| 41 | 5 | my_fprintf(2, "setenv: Variable name must begin with a letter.\n"); | |
| 42 | 5 | return 1; | |
| 43 | } | ||
| 44 |
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120 | if (my_str_is_valid(var) == 0) { |
| 45 | 1 | my_fprintf(2, "setenv: " | |
| 46 | "Variable name must contain alphanumeric characters.\n"); | ||
| 47 | 1 | return 1; | |
| 48 | } | ||
| 49 | 119 | return 0; | |
| 50 | } | ||
| 51 | |||
| 52 | /** | ||
| 53 | * @brief Set a new environment variable | ||
| 54 | * @param mysh The shell structure | ||
| 55 | * @param var The variable name | ||
| 56 | * @param value The variable value | ||
| 57 | * @return <b>int</b> 0 if the command succeed, 1 otherwise | ||
| 58 | */ | ||
| 59 | 125 | int set_new_env_var(mysh_t *mysh, char *var, char *value) | |
| 60 | { | ||
| 61 | 125 | char **new_env = MALLOC(sizeof(char *) * | |
| 62 | (my_array_len((void **)mysh->env) + 2)); | ||
| 63 | 125 | int index = 0; | |
| 64 | |||
| 65 |
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125 | if (error_handling(var)) |
| 66 | 6 | return 1; | |
| 67 |
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123 | for (; mysh->env[index] != NULL; index++) |
| 68 | 4 | new_env[index] = mysh->env[index]; | |
| 69 | 119 | new_env[index] = CALLOC((my_strlen(var) + | |
| 70 | my_strlen(value) + 4), sizeof(char)); | ||
| 71 | 119 | new_env[index] = my_strcat(new_env[index], var); | |
| 72 | 119 | new_env[index] = my_strcat(new_env[index], "="); | |
| 73 |
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119 | if (value != NULL) |
| 74 | 119 | new_env[index] = my_strcat(new_env[index], value); | |
| 75 | 119 | new_env[index + 1] = NULL; | |
| 76 | 119 | mysh->env = new_env; | |
| 77 | 119 | update_path_list(mysh); | |
| 78 | 119 | return 0; | |
| 79 | } | ||
| 80 | |||
| 81 | /** | ||
| 82 | * @brief The setenv builtin | ||
| 83 | * @param mysh The shell structure | ||
| 84 | * @return <b>int</b> <u>0</u> if the command succeed, <u>1</u> otherwise | ||
| 85 | */ | ||
| 86 | 13 | int exec_setenv(mysh_t *mysh) | |
| 87 | { | ||
| 88 |
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13 | if (mysh->args[1] == NULL) |
| 89 | 4 | return exec_env(mysh); | |
| 90 |
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9 | if (mysh->args[2] != NULL && mysh->args[3] != NULL) { |
| 91 | ✗ | my_fprintf(2, "setenv: Too many arguments.\n"); | |
| 92 | ✗ | return 1; | |
| 93 | } | ||
| 94 |
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31 | for (int index = 0; mysh->env[index] != NULL; index++) { |
| 95 |
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24 | if (my_strncmp(mysh->env[index], mysh->args[1], |
| 96 | 24 | my_strlen(mysh->args[1])) == 0) { | |
| 97 | 2 | mysh->env[index] = CALLOC((my_strlen(mysh->args[1]) + | |
| 98 | my_strlen(mysh->args[2]) + 4), sizeof(char)); | ||
| 99 | 2 | my_strcat(mysh->env[index], mysh->args[1]); | |
| 100 | 2 | my_strcat(mysh->env[index], "=\0"); | |
| 101 | 2 | my_strcat(mysh->env[index], mysh->args[2]); | |
| 102 | 2 | update_path_list(mysh); | |
| 103 | 2 | return 0; | |
| 104 | } | ||
| 105 | } | ||
| 106 | 7 | return set_new_env_var(mysh, mysh->args[1], mysh->args[2]); | |
| 107 | } | ||
| 108 |