139 lines
3.6 KiB
C
139 lines
3.6 KiB
C
/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* expand_brace.c :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: wescande <wescande@student.42.fr> +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2017/01/12 19:00:29 by wescande #+# #+# */
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/* Updated: 2017/01/31 23:20:38 by wescande ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include "glob.h"
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/*
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** expand_brace return expansion of a string.
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** pattern searched are {ab, cd}.
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** return is t_ld which first param is ab and second is cd
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** input parameters are :
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** -char *pat -> pattern string to be looking for expand
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*/
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static char **gen_tab(const char *pat,
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const unsigned char *esc, int dup)
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{
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char **my_tab;
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if (!(my_tab = (char **)malloc(sizeof(char *) * 3)))
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return (NULL);
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if (dup)
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{
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my_tab[0] = ft_strdup(pat);
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my_tab[1] = ft_strdup((const char *)esc);
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}
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else
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{
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my_tab[0] = (char *)pat;
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my_tab[1] = (char *)esc;
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}
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my_tab[2] = NULL;
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return (my_tab);
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}
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static void iter_on_each(t_expand *me)
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{
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int i;
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char **my_new;
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char *first;
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unsigned char *second;
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t_ld *wk_tmp;
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i = -1;
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wk_tmp = *me->wk;
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while (me->split[++i])
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{
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first = ft_strjoinf(ft_strjoin(me->s1, me->split[i]), me->str + 1, 1);
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second = calc_expand_esc(me->esc,
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ft_strlen(me->s1),
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ft_strlen(me->split[i]),
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(int[2]){me->str - CH(*me->wk)[0], ft_strlen(me->str + 1)});
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modify_esc_split(second, me->m_esc[i],
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ft_strlen(me->s1), ft_strlen(me->split[i]));
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my_new = gen_tab(first, second, 0);
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ft_ld_pushfront(&wk_tmp, my_new);
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}
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me->wk = &wk_tmp;
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}
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static void init_expand(t_expand *me, char *start)
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{
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unsigned char *esc;
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me->s1 = ft_strsub(start, 1, me->str - start - 1);
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esc = ft_sub_esc(me->esc, start - CH(*me->wk)[0] + 1, me->str - start);
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me->split = ft_strsplit_spe(me->s1, esc, ',');
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me->m_esc = ft_strsplit_esc(me->s1, esc, ',');
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ft_strdel(&me->s1);
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ft_strdel((char **)&esc);
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me->s1 = ft_strsub(CH(*me->wk)[0], 0, start - CH(*me->wk)[0]);
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iter_on_each(me);
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ft_strdel(&me->s1);
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ft_tabdel(&me->split);
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ft_tabdel((char ***)&me->m_esc);
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}
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static int search_brace(t_expand *me)
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{
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char *start;
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int nb;
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start = NULL;
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nb = 0;
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while (*me->str)
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{
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start = *me->str == '{'
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&& !is_char_esc(me->esc, CH(*me->wk)[0], me->str)
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&& nb == 0 ? me->str : start;
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nb += *me->str == '{'
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&& !is_char_esc(me->esc, CH(*me->wk)[0], me->str);
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nb -= *me->str == '}'
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&& !is_char_esc(me->esc, CH(*me->wk)[0], me->str);
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if (!nb && start)
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{
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init_expand(me, start);
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return (1);
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}
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++me->str;
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}
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return (0);
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}
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void expand_brace(t_glob *gl)
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{
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t_ld *tmp;
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int do_it;
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t_expand me;
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ft_ld_pushfront(&gl->m_pat, gen_tab("", (const unsigned char *)"", 1));
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ft_ld_pushfront(&gl->m_pat, gen_tab(gl->pat, gl->esc, 1));
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me = (t_expand){NULL, NULL, NULL, NULL, NULL, NULL};
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do_it = 1;
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while (do_it)
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{
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do_it = 0;
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while (gl->m_pat->next && !do_it)
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{
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me.wk = &gl->m_pat;
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me.esc = UCH(gl->m_pat)[1];
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me.str = CH(gl->m_pat)[0];
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if ((tmp = gl->m_pat) && search_brace(&me))
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{
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ft_ld_del(&tmp, &ft_tabdel);
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do_it = 1;
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}
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gl->m_pat = gl->m_pat->next;
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}
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gl->m_pat = ft_ld_front(gl->m_pat);
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}
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}
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