88 lines
2.1 KiB
C
88 lines
2.1 KiB
C
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#include "line-ed.h"
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#include <fx/collections/array.h>
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#include <fx/string.h>
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void alloc_empty_history_entry(struct line_ed *ed)
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{
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fx_value *str_v = fx_array_get_ref(
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ed->l_history,
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fx_array_get_size(ed->l_history) - 1);
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fx_string *str = NULL;
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fx_value_get_object(str_v, &str);
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if (!str || fx_string_get_size(str, FX_STRLEN_NORMAL) > 0) {
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str = fx_string_create();
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fx_array_push_back(ed->l_history, FX_VALUE_OBJECT(str));
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fx_string_unref(str);
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}
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ed->l_history_pos = fx_array_get_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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fx_value *cur_v = fx_array_get_ref(ed->l_history, ed->l_history_pos);
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fx_string *cur = NULL;
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fx_value_get_object(cur_v, &cur);
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fx_string_clear(cur);
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fx_string_append_wstr(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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fx_value *cur_v = fx_array_get_ref(ed->l_history, ed->l_history_pos);
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fx_string *cur = NULL;
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fx_value_get_object(cur_v, &cur);
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char s[] = {'\n', 0};
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fx_string_append_cstr(cur, s);
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fx_string_append_wstr(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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fx_value *cur_v = fx_array_get_ref(ed->l_history, ed->l_history_pos);
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fx_string *cur = NULL;
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fx_value_get_object(cur_v, &cur);
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size_t len = fx_min(
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size_t,
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(size_t)(ed->l_buf_end - ed->l_buf - 1),
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fx_string_get_size(cur, FX_STRLEN_CODEPOINTS));
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const char *src = fx_string_get_cstr(cur);
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for (size_t i = 0; i < len; i++) {
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fx_wchar ch_src = fx_wchar_utf8_codepoint_decode(src);
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ed->l_buf[i] = ch_src;
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src += fx_wchar_utf8_codepoint_stride(src);
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}
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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 = fx_array_get_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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fx_value *last_v = fx_array_get_ref(ed->l_history, nlines - 2);
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fx_string *last = NULL;
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fx_value_get_object(last_v, &last);
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return fx_string_get_cstr(last);
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}
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