112 lines
2.9 KiB
C
112 lines
2.9 KiB
C
/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* valid_command.c :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: lperrey <lperrey@student.42.fr> +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2021/10/24 18:52:05 by lperrey #+# #+# */
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/* Updated: 2021/12/17 03:14:06 by lperrey ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include "minishell.h"
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int valid_io_redirect(t_token **token_list);
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static int valid_command_rule1(t_token **token_list);
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static int valid_command_rule2(t_token **token_list);
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static int valid_command_rule3(t_token **token_list);
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static int valid_command_rule4(t_token **token_list);
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static int valid_command_rule5(t_token **token_list);
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int valid_command(t_token **token_list)
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{
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t_token *cmd_start;
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cmd_start = *token_list;
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if (valid_command_rule1(token_list))
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return (1);
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*token_list = cmd_start;
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if (valid_command_rule2(token_list))
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return (1);
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*token_list = cmd_start;
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if (valid_command_rule3(token_list))
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return (1);
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*token_list = cmd_start;
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if (valid_command_rule4(token_list))
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return (1);
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*token_list = cmd_start;
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if (valid_command_rule5(token_list))
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return (1);
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return (0);
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}
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// cmd_prefix cmd_name cmd_suffix
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static int valid_command_rule1(t_token **token_list)
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{
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while (valid_io_redirect(token_list))
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{
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if (valid_token(token_list, T_WORD))
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{
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while (valid_token(token_list, T_WORD)
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|| valid_io_redirect(token_list))
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{
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if (valid_command_separator(*token_list))
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return (1);
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}
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}
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}
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return (0);
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}
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// cmd_prefix cmd_name
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static int valid_command_rule2(t_token **token_list)
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{
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while (valid_io_redirect(token_list))
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{
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if (valid_token(token_list, T_WORD))
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{
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if (valid_command_separator(*token_list))
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return (1);
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}
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}
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return (0);
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}
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// cmd_name cmd_suffix
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static int valid_command_rule3(t_token **token_list)
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{
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if (valid_token(token_list, T_WORD))
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{
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while (valid_token(token_list, T_WORD) || valid_io_redirect(token_list))
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{
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if (valid_command_separator(*token_list))
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return (1);
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}
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}
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return (0);
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}
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// cmd_name
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static int valid_command_rule4(t_token **token_list)
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{
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if (valid_token(token_list, T_WORD))
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{
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if (valid_command_separator(*token_list))
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return (1);
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}
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return (0);
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}
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// cmd_prefix
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static int valid_command_rule5(t_token **token_list)
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{
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while (valid_io_redirect(token_list))
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{
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if (valid_command_separator(*token_list))
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return (1);
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}
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return (0);
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}
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