106 lines
2.8 KiB
C
106 lines
2.8 KiB
C
/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* ms_ext.c :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: tmaze <tmaze@student.42.fr> +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2019/10/25 18:21:47 by tmaze #+# #+# */
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/* Updated: 2019/11/10 15:55:39 by tmaze ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include "minishell.h"
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t_env *search_key(t_env *env, char *cmd, int index)
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{
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t_env *it;
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int i;
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int j;
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it = env;
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while (it && cmd[index + 2])
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{
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i = 0;
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j = index;
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while (it->key[i] && cmd[j] && cmd[j] != '}' && it->key[i] == cmd[j])
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{
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i++;
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j++;
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}
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if (!it->key[i] && cmd[j] == '}')
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return (it);
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it = it->next;
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}
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return (NULL);
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}
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char **res_ext(char **argv, t_env *env)
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{
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int i;
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int j;
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int k;
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int res_len;
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t_env *elem;
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char *ret;
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k = 0;
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while (argv && argv[k])
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{
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i = 0;
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while (argv[k] && argv[k][i]) {
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if (i == 0 && argv[k][i] == '~' && ft_envgetelem("HOME", env)) {
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res_len =
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ft_strlen(argv[k]) - 1 + ft_strlen(ft_envgetelem("HOME", env)->val);
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if ((ret = ft_strnew(res_len)) != NULL) {
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ft_strcpy(ret, ft_envgetelem("HOME", env)->val);
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if (ret[ft_strlen(ret) - 1] != '/')
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ft_strcat(ret, "/");
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ft_strcat(ret, argv[k] + 1);
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ft_strdel(&(argv[k]));
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argv[k] = ret;
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i = ft_strlen(ft_envgetelem("HOME", env)->val);
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} else {
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ft_printf("minishell: memory error\n");
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return (NULL);
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}
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} else if (argv[k][i] == '$' && argv[k][i + 1] && argv[k][i + 1] == '{') {
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j = i + 1;
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while (argv[k][j] && argv[k][j] != '}')
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j++;
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if (!argv[k][j])
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{
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ft_printf("minishell: missing }\n");
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return (NULL);
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}
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else if ((elem = search_key(env, argv[k], i + 2)) != NULL)
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{
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if ((ret = ft_strnew(i + ft_strlen(argv[k]) - j +
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ft_strlen(elem->val))) != NULL)
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{
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ft_strncpy(ret, argv[k], i);
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ft_strcat(ret, elem->val);
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ft_strcat(ret, argv[k] + j + 1);
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ft_strdel(&(argv[k]));
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argv[k] = ret;
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}
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else
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{
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ft_printf("minishell: memory error\n");
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return (NULL);
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}
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}
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else
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{
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ft_printf("minishell: variable %*s not found\n", j - i - 1,
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argv[k] + i + 2);
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return (NULL);
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}
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}
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i++;
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}
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k++;
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}
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return (argv);
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}
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