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-rw-r--r--examples/dte/move.c311
1 files changed, 0 insertions, 311 deletions
diff --git a/examples/dte/move.c b/examples/dte/move.c
deleted file mode 100644
index 72414b3..0000000
--- a/examples/dte/move.c
+++ /dev/null
@@ -1,311 +0,0 @@
-#include "move.h"
-#include "buffer.h"
-#include "indent.h"
-#include "util/ascii.h"
-#include "util/debug.h"
-#include "util/macros.h"
-#include "util/utf8.h"
-
-typedef enum {
- CT_SPACE,
- CT_NEWLINE,
- CT_WORD,
- CT_OTHER,
-} CharTypeEnum;
-
-void move_to_preferred_x(View *view, long preferred_x)
-{
- const LocalOptions *options = &view->buffer->options;
- StringView line;
- view->preferred_x = preferred_x;
- block_iter_bol(&view->cursor);
- fill_line_ref(&view->cursor, &line);
-
- if (options->emulate_tab && view->preferred_x < line.length) {
- const size_t iw = options->indent_width;
- const size_t ilevel = indent_level(view->preferred_x, iw);
- for (size_t i = 0; i < line.length && line.data[i] == ' '; i++) {
- if (i + 1 == (ilevel + 1) * iw) {
- // Force cursor to beginning of the indentation level
- view->cursor.offset += ilevel * iw;
- return;
- }
- }
- }
-
- const unsigned int tw = options->tab_width;
- unsigned long x = 0;
- size_t i = 0;
- while (x < view->preferred_x && i < line.length) {
- CodePoint u = line.data[i++];
- if (likely(u < 0x80)) {
- if (likely(!ascii_iscntrl(u))) {
- x++;
- } else if (u == '\t') {
- x = next_indent_width(x, tw);
- } else if (u == '\n') {
- break;
- } else {
- x += 2;
- }
- } else {
- const size_t next = i;
- i--;
- u = u_get_nonascii(line.data, line.length, &i);
- x += u_char_width(u);
- if (x > view->preferred_x) {
- i = next;
- break;
- }
- }
- }
- if (x > view->preferred_x) {
- i--;
- }
- view->cursor.offset += i;
-
- // If cursor stopped on a zero-width char, move to the next spacing char
- CodePoint u;
- if (block_iter_get_char(&view->cursor, &u) && u_is_zero_width(u)) {
- block_iter_next_column(&view->cursor);
- }
-}
-
-void move_cursor_left(View *view)
-{
- const LocalOptions *options = &view->buffer->options;
- if (options->emulate_tab) {
- size_t size = get_indent_level_bytes_left(options, &view->cursor);
- if (size) {
- block_iter_back_bytes(&view->cursor, size);
- view_reset_preferred_x(view);
- return;
- }
- }
- block_iter_prev_column(&view->cursor);
- view_reset_preferred_x(view);
-}
-
-void move_cursor_right(View *view)
-{
- const LocalOptions *options = &view->buffer->options;
- if (options->emulate_tab) {
- size_t size = get_indent_level_bytes_right(options, &view->cursor);
- if (size) {
- block_iter_skip_bytes(&view->cursor, size);
- view_reset_preferred_x(view);
- return;
- }
- }
- block_iter_next_column(&view->cursor);
- view_reset_preferred_x(view);
-}
-
-void move_bol(View *view)
-{
- block_iter_bol(&view->cursor);
- view_reset_preferred_x(view);
-}
-
-void move_bol_smart(View *view, SmartBolFlags flags)
-{
- if (flags == 0) {
- move_bol(view);
- return;
- }
-
- BUG_ON(!(flags & BOL_SMART));
- bool fwd = false;
- StringView line;
- size_t cursor_offset = fetch_this_line(&view->cursor, &line);
-
- if (cursor_offset == 0) {
- // Already at bol
- if (!(flags & BOL_SMART_TOGGLE)) {
- goto out;
- }
- fwd = true;
- }
-
- size_t indent = ascii_blank_prefix_length(line.data, line.length);
- if (fwd) {
- block_iter_skip_bytes(&view->cursor, indent);
- } else {
- size_t co = cursor_offset;
- size_t move = (co > indent) ? co - indent : co;
- block_iter_back_bytes(&view->cursor, move);
- }
-
-out:
- view_reset_preferred_x(view);
-}
-
-void move_eol(View *view)
-{
- block_iter_eol(&view->cursor);
- view_reset_preferred_x(view);
-}
-
-void move_up(View *view, long count)
-{
- const long x = view_get_preferred_x(view);
- while (count > 0) {
- if (!block_iter_prev_line(&view->cursor)) {
- break;
- }
- count--;
- }
- move_to_preferred_x(view, x);
-}
-
-void move_down(View *view, long count)
-{
- const long x = view_get_preferred_x(view);
- while (count > 0) {
- if (!block_iter_eat_line(&view->cursor)) {
- break;
- }
- count--;
- }
- move_to_preferred_x(view, x);
-}
-
-void move_bof(View *view)
-{
- block_iter_bof(&view->cursor);
- view_reset_preferred_x(view);
-}
-
-void move_eof(View *view)
-{
- block_iter_eof(&view->cursor);
- view_reset_preferred_x(view);
-}
-
-void move_to_line(View *view, size_t line)
-{
- BUG_ON(line == 0);
- view->center_on_scroll = true;
- block_iter_goto_line(&view->cursor, line - 1);
-}
-
-void move_to_column(View *view, size_t column)
-{
- BUG_ON(column == 0);
- block_iter_bol(&view->cursor);
- while (column-- > 1) {
- CodePoint u;
- if (!block_iter_next_char(&view->cursor, &u)) {
- break;
- }
- if (u == '\n') {
- block_iter_prev_char(&view->cursor, &u);
- break;
- }
- }
- view_reset_preferred_x(view);
-}
-
-void move_to_filepos(View *view, size_t line, size_t column)
-{
- move_to_line(view, line);
- BUG_ON(!block_iter_is_bol(&view->cursor));
- if (column != 1) {
- move_to_column(view, column);
- }
- view_reset_preferred_x(view);
-}
-
-static CharTypeEnum get_char_type(CodePoint u)
-{
- if (u == '\n') {
- return CT_NEWLINE;
- }
- if (u_is_breakable_whitespace(u)) {
- return CT_SPACE;
- }
- if (u_is_word_char(u)) {
- return CT_WORD;
- }
- return CT_OTHER;
-}
-
-static bool get_current_char_type(BlockIter *bi, CharTypeEnum *type)
-{
- CodePoint u;
- if (!block_iter_get_char(bi, &u)) {
- return false;
- }
-
- *type = get_char_type(u);
- return true;
-}
-
-static size_t skip_fwd_char_type(BlockIter *bi, CharTypeEnum type)
-{
- size_t count = 0;
- CodePoint u;
- while (block_iter_next_char(bi, &u)) {
- if (get_char_type(u) != type) {
- block_iter_prev_char(bi, &u);
- break;
- }
- count += u_char_size(u);
- }
- return count;
-}
-
-static size_t skip_bwd_char_type(BlockIter *bi, CharTypeEnum type)
-{
- size_t count = 0;
- CodePoint u;
- while (block_iter_prev_char(bi, &u)) {
- if (get_char_type(u) != type) {
- block_iter_next_char(bi, &u);
- break;
- }
- count += u_char_size(u);
- }
- return count;
-}
-
-size_t word_fwd(BlockIter *bi, bool skip_non_word)
-{
- size_t count = 0;
- CharTypeEnum type;
-
- while (1) {
- count += skip_fwd_char_type(bi, CT_SPACE);
- if (!get_current_char_type(bi, &type)) {
- return count;
- }
-
- if (
- count
- && (!skip_non_word || (type == CT_WORD || type == CT_NEWLINE))
- ) {
- return count;
- }
-
- count += skip_fwd_char_type(bi, type);
- }
-}
-
-size_t word_bwd(BlockIter *bi, bool skip_non_word)
-{
- size_t count = 0;
- CharTypeEnum type;
- CodePoint u;
-
- do {
- count += skip_bwd_char_type(bi, CT_SPACE);
- if (!block_iter_prev_char(bi, &u)) {
- return count;
- }
-
- type = get_char_type(u);
- count += u_char_size(u);
- count += skip_bwd_char_type(bi, type);
- } while (skip_non_word && type != CT_WORD && type != CT_NEWLINE);
- return count;
-}
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