68 lines
1.6 KiB
C
68 lines
1.6 KiB
C
#include "line-ed.h"
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#include <blue/ds/array.h>
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#include <blue/ds/string.h>
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void alloc_empty_history_entry(struct line_ed *ed)
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{
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b_string *str = (b_string *)b_array_at(
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ed->l_history, b_array_size(ed->l_history) - 1);
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if (!str || b_string_get_size(str, B_STRLEN_NORMAL) > 0) {
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str = b_string_create();
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b_array_append(ed->l_history, (b_object *)str);
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}
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ed->l_history_pos = b_array_size(ed->l_history) - 1;
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}
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void save_buf_to_history(struct line_ed *ed)
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{
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b_string *cur = (b_string *)b_array_get(ed->l_history, ed->l_history_pos);
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b_string_replace_all(cur, ed->l_buf);
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}
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void append_buf_to_history(struct line_ed *ed)
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{
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b_string *cur = (b_string *)b_array_get(ed->l_history, ed->l_history_pos);
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char s[] = {'\n', 0};
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b_string_append_cstr(cur, s);
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b_string_append_cstr(cur, ed->l_buf);
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}
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void load_buf_from_history(struct line_ed *ed)
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{
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b_string *cur = (b_string *)b_array_at(ed->l_history, ed->l_history_pos);
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size_t len
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= MIN((size_t)(ed->l_buf_end - ed->l_buf - 1),
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b_string_get_size(cur, B_STRLEN_NORMAL));
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memcpy(ed->l_buf, b_string_ptr(cur), len);
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ed->l_buf[len] = '\0';
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unsigned int x = 0, y = 0;
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for (size_t i = 0; ed->l_buf[i]; i++) {
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if (ed->l_buf[i] == '\n') {
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x = 0;
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y++;
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} else {
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x++;
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}
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}
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ed->l_buf_ptr = ed->l_buf + len;
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ed->l_line_end = ed->l_buf_ptr;
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ed->l_cursor_x = x;
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ed->l_cursor_y = y;
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}
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const char *last_history_line(struct line_ed *ed)
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{
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size_t nlines = b_array_size(ed->l_history);
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if (nlines < 2) {
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return NULL;
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}
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b_string *last = (b_string *)b_array_at(ed->l_history, nlines - 2);
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return b_string_ptr(last);
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}
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