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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* lexer_utils.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: nahaddac <nahaddac@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2020/07/16 08:18:15 by nahaddac #+# #+# */
/* Updated: 2020/08/27 09:55:03 by charles ### ########.fr */
/* */
/* ************************************************************************** */
#include "lexer.h"
// check for append tag
enum e_tok ret_token_sep_redir_append(char *input, int i)
{
if (input[i + 1] == '>')
return(TAG_REDIR_APPEND);
return (TAG_REDIR_OUT);
}
// return token tag corresponding to string id
enum e_tok ret_token(char *input, int i)
{
if (input[i] == ';')
return(TAG_END);
if (input[i] == '&' && input[i + 1] == '&')
return(TAG_AND);
if (input[i] == '|' && input[i + 1] == '|')
return(TAG_OR);
if(input[i] == '|')
return(TAG_PIPE);
if (input[i] == '>')
return(ret_token_sep_redir_append(input,i));
if (input[i] == '<')
return(TAG_REDIR_IN);
if (input[i] == '(')
return(TAG_PARENT_OPEN);
if (input[i] == ')')
return(TAG_PARENT_CLOSE);
return(0);
}
// check is char is separator
// /!\ can be replaced by ft_strchr(";&|><()", input) == NULL
int lexer_sep(char input)
{
char *sep;
int i;
i = 0;
sep = ";&|><()";
while(sep[i] != '\0')
{
if(sep[i] == input)
return(1);
i++;
}
return (0);
}
// skip spaces
// /!\ can be replaced by strspn
int lexer_space(char *input)
{
int i;
i=0;
while(input[i] == ' ')
i++;
return(i);
}
static int lex_check_single_quote(char *input, int i)
{
i++;
while(input[i] != '\0')
{
if(input[i] == '\\')
i+=1;
if(input[i] == '\'')
break;
++i;
}
if (input[i + 1] == ' ')
while(input[i + 1] == ' ')
i++;
return(i + 1);
}
int lexer_check_between_quote(char *input, int i)
{
if(input[i] == '\'')
return(lex_check_single_quote(input, i));
i++;
while(input[i] != '"' && (input[i] != '\0'))
{
if (input[i] == '\\')
i += 1;
++i;
}
if (input[i + 1] == ' ')
while(input[i + 1] == ' ')
i++;
return(i + 1);
}
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