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Rearrange code and cleanup

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This commit is contained in:
Syed Daanish
2025-12-30 01:19:50 +00:00
parent 04179d1a4e
commit 235eafb01c
51 changed files with 2608 additions and 2646 deletions
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src/editor/cursor.cc
+325
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@@ -0,0 +1,325 @@
#include "editor/editor.h"
#include "editor/folds.h"
#include "utils/utils.h"
Coord move_right_pure(Editor *editor, Coord cursor, uint32_t number) {
Coord result = cursor;
if (!editor || !editor->root || number == 0)
return result;
uint32_t row = result.row;
uint32_t col = result.col;
uint32_t line_len = 0;
LineIterator *it = begin_l_iter(editor->root, row);
if (!it)
return result;
char *line = next_line(it, &line_len);
if (!line) {
free(it->buffer);
free(it);
return result;
}
if (line_len > 0 && line[line_len - 1] == '\n')
--line_len;
while (number > 0) {
if (col >= line_len) {
uint32_t next_row = row + 1;
if (next_row >= editor->root->line_count) {
col = line_len;
break;
}
row = next_row;
col = 0;
line = next_line(it, &line_len);
if (!line)
break;
if (line_len > 0 && line[line_len - 1] == '\n')
--line_len;
} else {
uint32_t inc =
grapheme_next_character_break_utf8(line + col, line_len - col);
if (inc == 0)
break;
col += inc;
}
number--;
}
free(it->buffer);
free(it);
result.row = row;
result.col = col;
return result;
}
Coord move_left_pure(Editor *editor, Coord cursor, uint32_t number) {
Coord result = cursor;
if (!editor || !editor->root || number == 0)
return result;
uint32_t row = result.row;
uint32_t col = result.col;
uint32_t len = 0;
LineIterator *it = begin_l_iter(editor->root, row);
char *line = next_line(it, &len);
if (!line) {
free(it->buffer);
free(it);
return result;
}
if (len > 0 && line[len - 1] == '\n')
--len;
bool iterator_ahead = true;
while (number > 0) {
if (col == 0) {
if (row == 0)
break;
if (iterator_ahead) {
prev_line(it, nullptr);
iterator_ahead = false;
}
line = nullptr;
row--;
line = prev_line(it, &len);
if (!line)
break;
if (len > 0 && line[len - 1] == '\n')
--len;
col = len;
} else {
uint32_t new_col = 0;
while (new_col < col) {
uint32_t inc =
grapheme_next_character_break_utf8(line + new_col, len - new_col);
if (new_col + inc >= col)
break;
new_col += inc;
}
col = new_col;
}
number--;
}
free(it->buffer);
free(it);
result.row = row;
result.col = col;
return result;
}
Coord move_right(Editor *editor, Coord cursor, uint32_t number) {
Coord result = cursor;
if (!editor || !editor->root || number == 0)
return result;
uint32_t row = result.row;
uint32_t col = result.col;
uint32_t line_len = 0;
LineIterator *it = begin_l_iter(editor->root, row);
if (!it)
return result;
uint32_t target_row = next_unfolded_row(editor, row);
while (row < target_row) {
if (!next_line(it, &line_len)) {
free(it->buffer);
free(it);
return result;
}
++row;
}
char *line = next_line(it, &line_len);
if (!line) {
free(it->buffer);
free(it);
return result;
}
if (line_len > 0 && line[line_len - 1] == '\n')
--line_len;
while (number > 0) {
if (col >= line_len) {
uint32_t next_row = next_unfolded_row(editor, row + 1);
if (next_row >= editor->root->line_count) {
col = line_len;
break;
}
while (row < next_row) {
line = next_line(it, &line_len);
if (!line) {
free(it->buffer);
free(it);
result.row = row;
result.col = col;
return result;
}
++row;
}
if (line_len > 0 && line[line_len - 1] == '\n')
--line_len;
col = 0;
--number;
continue;
} else {
uint32_t inc =
grapheme_next_character_break_utf8(line + col, line_len - col);
if (inc == 0)
break;
col += inc;
--number;
}
}
free(it->buffer);
free(it);
result.row = row;
result.col = col;
return result;
}
Coord move_left(Editor *editor, Coord cursor, uint32_t number) {
Coord result = cursor;
if (!editor || !editor->root || number == 0)
return result;
uint32_t row = result.row;
uint32_t col = result.col;
uint32_t len = 0;
LineIterator *it = begin_l_iter(editor->root, row);
char *line = next_line(it, &len);
if (!line) {
free(it->buffer);
free(it);
return result;
}
if (len > 0 && line[len - 1] == '\n')
--len;
bool iterator_ahead = true;
while (number > 0) {
if (col == 0) {
if (row == 0)
break;
if (iterator_ahead) {
prev_line(it, nullptr);
iterator_ahead = false;
}
line = nullptr;
while (row > 0) {
row--;
line = prev_line(it, &len);
if (!line)
break;
const Fold *fold = fold_for_line(editor->folds, row);
if (fold) {
while (line && row > fold->start) {
line = prev_line(it, &len);
row--;
}
line = nullptr;
continue;
}
break;
}
if (!line)
break;
if (len > 0 && line[len - 1] == '\n')
--len;
col = len;
} else {
uint32_t new_col = 0;
while (new_col < col) {
uint32_t inc =
grapheme_next_character_break_utf8(line + new_col, len - new_col);
if (new_col + inc >= col)
break;
new_col += inc;
}
col = new_col;
}
number--;
}
free(it->buffer);
free(it);
result.row = row;
result.col = col;
return result;
}
void cursor_down(Editor *editor, uint32_t number) {
if (!editor || !editor->root || number == 0)
return;
uint32_t len;
LineIterator *it = begin_l_iter(editor->root, editor->cursor.row);
char *line_content = next_line(it, &len);
if (line_content == nullptr)
return;
if (editor->cursor_preffered == UINT32_MAX)
editor->cursor_preffered =
get_visual_col_from_bytes(line_content, len, editor->cursor.col);
uint32_t visual_col = editor->cursor_preffered;
free(it->buffer);
free(it);
uint32_t target_row = editor->cursor.row;
while (number > 0 && target_row < editor->root->line_count - 1) {
target_row = next_unfolded_row(editor, target_row + 1);
if (target_row >= editor->root->line_count) {
target_row = editor->root->line_count - 1;
break;
}
number--;
}
it = begin_l_iter(editor->root, target_row);
line_content = next_line(it, &len);
if (!line_content)
return;
if (len > 0 && line_content[len - 1] == '\n')
--len;
editor->cursor.row = target_row;
editor->cursor.col = get_bytes_from_visual_col(line_content, len, visual_col);
free(it->buffer);
free(it);
}
void cursor_up(Editor *editor, uint32_t number) {
if (!editor || !editor->root || number == 0 || editor->cursor.row == 0)
return;
uint32_t len;
LineIterator *it = begin_l_iter(editor->root, editor->cursor.row);
char *line_content = next_line(it, &len);
if (!line_content)
return;
if (editor->cursor_preffered == UINT32_MAX)
editor->cursor_preffered =
get_visual_col_from_bytes(line_content, len, editor->cursor.col);
uint32_t visual_col = editor->cursor_preffered;
free(it->buffer);
free(it);
uint32_t target_row = editor->cursor.row;
while (number > 0 && target_row > 0) {
target_row = prev_unfolded_row(editor, target_row - 1);
if (target_row == 0) {
number--;
break;
}
number--;
}
it = begin_l_iter(editor->root, target_row);
line_content = next_line(it, &len);
if (line_content) {
if (len > 0 && line_content[len - 1] == '\n')
--len;
editor->cursor.row = target_row;
editor->cursor.col =
get_bytes_from_visual_col(line_content, len, visual_col);
} else {
editor->cursor.row = 0;
editor->cursor.col = 0;
}
free(it->buffer);
free(it);
}
void cursor_right(Editor *editor, uint32_t number) {
if (!editor || !editor->root || number == 0)
return;
editor->cursor = move_right(editor, editor->cursor, number);
editor->cursor_preffered = UINT32_MAX;
}
void cursor_left(Editor *editor, uint32_t number) {
if (!editor || !editor->root || number == 0)
return;
editor->cursor = move_left(editor, editor->cursor, number);
editor->cursor_preffered = UINT32_MAX;
}