123 lines
2.8 KiB
C
123 lines
2.8 KiB
C
/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* match_pattern.c :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: wescande <wescande@student.42.fr> +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2017/01/24 17:30:23 by wescande #+# #+# */
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/* Updated: 2017/01/24 20:42:30 by wescande ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include "glob.h"
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static int match_bracket_char(char **cmp, const char *pat, char c, int neg)
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{
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int dir;
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char s;
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if ((*cmp + 2) < pat && (*cmp)[1] == '-' && (s = (*cmp)[0]))
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{
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dir = s > (*cmp)[2];
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while ((dir && s >= (*cmp)[2]) || (!dir && s <= (*cmp)[2]))
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{
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if (!neg && s == c)
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return (1);
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else if (neg && s == c)
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return (0);
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s += (dir * -2 + 1);
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}
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*cmp += 2;
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}
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else if (!neg && **cmp == c)
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{
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return (1);
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}
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else if (neg && **cmp == c)
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{
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return (0);
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}
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return (-1);
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}
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static int match_bracket(const char **pat, char c)
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{
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char *cmp;
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int neg;
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int ret;
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cmp = (char *)*pat + 1;
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while (**pat != ']')
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{
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if (!**pat)
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return (0);
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++*pat;
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}
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neg = 0;
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if ((*cmp == '^' || *cmp == '!') && ++neg)
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++cmp;
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while (cmp < *pat)
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{
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ret = match_bracket_char(&cmp, *pat, c, neg);
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if (ret != -1)
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return (ret);
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++cmp;
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}
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return (neg);
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}
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static int match_star(const char *pat, char *str,
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char *full_word, t_ld **match)
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{
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char *fix;
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if (!pat[1])
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return (1);
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fix = str + ft_strlen(str);
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while (fix > str)
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{
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if (match_pattern(pat + 1, fix, full_word, match))
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return (1);
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--fix;
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}
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return (0);
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}
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const char *manage_pat(const char *pat, char *str)
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{
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if (pat[0] == '.' && pat[1] == '/'
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&& ((str[0] == '.' && str[1] != '/') || str[0] != '.'))
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return (pat + 2);
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return (pat);
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}
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int match_pattern(const char *pat, char *str,
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char *full_word, t_ld **match)
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{
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pat = manage_pat(pat, str);
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while (*pat)
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{
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if (*pat == '?')
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str++;
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else if (*pat == '[')
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{
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if (!match_bracket(&pat, *str))
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return (0);
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}
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else if (*pat == '*')
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return (match_star(pat, str, full_word, match));
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else if (*pat == '\\')
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{
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if (!*++pat || *str != *pat)
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return (0);
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}
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else if (*pat == '/' && !*str && is_directory(full_word))
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dir_research((pat + 1), full_word, match);
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else if (*pat != *str)
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return (0);
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++str;
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++pat;
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}
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return (*str ? 0 : 1);
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}
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