365 lines
10 KiB
C++
365 lines
10 KiB
C++
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// TOP
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#define NO_BINDING
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#include "../4coder_default_bindings.cpp"
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CUSTOM_COMMAND_SIG(kill_rect){
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View_Summary view = app->get_active_view(app);
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Buffer_Summary buffer = app->get_buffer(app, view.buffer_id);
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Full_Cursor cursor;
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Buffer_Rect rect = get_rect(&view);
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for (int line = rect.line1; line >= rect.line0; --line){
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int start = 0;
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int end = 0;
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cursor = app->view_compute_cursor(app, &view, seek_line_char(line, rect.char0));
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start = cursor.pos;
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cursor = app->view_compute_cursor(app, &view, seek_line_char(line, rect.char1));
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end = cursor.pos;
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app->buffer_replace_range(app, &buffer, start, end, 0, 0);
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}
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}
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// NOTE(allen): This stream stuff will be moved to helper if it looks
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// like it will be helpful. So if you want to use it to build your own
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// commands I suggest you move it there first.
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struct Stream_Chunk{
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Application_Links *app;
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Buffer_Summary *buffer;
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char *base_data;
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int start, end;
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int data_size;
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char *data;
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};
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int
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round_down(int x, int b){
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int r = 0;
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if (x >= 0){
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r = x - (x % b);
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}
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return(r);
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}
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int
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round_up(int x, int b){
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int r = 0;
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if (x >= 0){
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r = x - (x % b) + b;
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}
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return(r);
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}
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int
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init_stream_chunk(Stream_Chunk *chunk,
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Application_Links *app, Buffer_Summary *buffer,
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int pos, char *data, int size){
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int result = 0;
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app->refresh_buffer(app, buffer);
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if (pos >= 0 && pos < buffer->size && size > 0){
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result = 1;
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chunk->app = app;
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chunk->buffer = buffer;
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chunk->base_data = data;
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chunk->data_size = size;
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chunk->start = round_down(pos, size);
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chunk->end = round_up(pos, size);
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if (chunk->end > buffer->size){
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chunk->end = buffer->size;
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}
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app->buffer_read_range(app, buffer, chunk->start, chunk->end, chunk->base_data);
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chunk->data = chunk->base_data - chunk->start;
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}
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return(result);
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}
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int
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forward_stream_chunk(Stream_Chunk *chunk){
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Application_Links *app = chunk->app;
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Buffer_Summary *buffer = chunk->buffer;
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int result = 0;
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app->refresh_buffer(app, buffer);
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if (chunk->end < buffer->size){
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result = 1;
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chunk->start = chunk->end;
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chunk->end += chunk->data_size;
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if (chunk->end > buffer->size){
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chunk->end = buffer->size;
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}
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app->buffer_read_range(app, buffer, chunk->start, chunk->end, chunk->base_data);
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chunk->data = chunk->base_data - chunk->start;
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}
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return(result);
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}
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int
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backward_stream_chunk(Stream_Chunk *chunk){
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Application_Links *app = chunk->app;
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Buffer_Summary *buffer = chunk->buffer;
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int result = 0;
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app->refresh_buffer(app, buffer);
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if (chunk->start > 0){
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result = 1;
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chunk->end = chunk->start;
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chunk->start -= chunk->data_size;
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if (chunk->start < 0){
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chunk->start = 0;
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}
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app->buffer_read_range(app, buffer, chunk->start, chunk->end, chunk->base_data);
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chunk->data = chunk->base_data - chunk->start;
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}
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return(result);
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}
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// TODO(allen): Both of these brace related commands would work better
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// if the API exposed access to the tokens in a code file.
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CUSTOM_COMMAND_SIG(mark_matching_brace){
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View_Summary view = app->get_active_view(app);
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Buffer_Summary buffer = app->get_buffer(app, view.buffer_id);
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int start_pos = view.cursor.pos;
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// NOTE(allen): The user provides the memory that the chunk uses,
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// this chunk will then be filled at each step of the text stream loop.
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// This way you can look for something that should be nearby without
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// having to copy the whole file in at once.
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Stream_Chunk chunk;
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char chunk_space[(1 << 10)];
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int result = 0;
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int found_result = 0;
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int i = start_pos;
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int still_looping = 1;
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int nesting_counter = 0;
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char at_cursor = 0;
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if (init_stream_chunk(&chunk, app, &buffer, i, chunk_space, sizeof(chunk_space))){
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// NOTE(allen): This is important! The data array is a pointer that is adjusted
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// so that indexing it with "i" will put it with the chunk that is actually loaded.
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// If i goes below chunk.start or above chunk.end _that_ is an invalid access.
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at_cursor = chunk.data[i];
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if (at_cursor == '{'){
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do{
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for (++i; i < chunk.end; ++i){
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at_cursor = chunk.data[i];
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if (at_cursor == '{'){
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++nesting_counter;
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}
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else if (at_cursor == '}'){
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if (nesting_counter == 0){
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found_result = 1;
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result = i;
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goto finished;
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}
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else{
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--nesting_counter;
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}
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}
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}
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still_looping = forward_stream_chunk(&chunk);
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}
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while (still_looping);
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}
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else if (at_cursor == '}'){
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do{
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for (--i; i >= chunk.start; --i){
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at_cursor = chunk.data[i];
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if (at_cursor == '}'){
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++nesting_counter;
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}
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else if (at_cursor == '{'){
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if (nesting_counter == 0){
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found_result = 1;
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result = i;
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goto finished;
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}
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else{
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--nesting_counter;
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}
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}
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}
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still_looping = backward_stream_chunk(&chunk);
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}
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while (still_looping);
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}
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}
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finished:
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if (found_result){
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app->view_set_mark(app, &view, seek_pos(result));
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}
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}
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CUSTOM_COMMAND_SIG(cursor_to_surrounding_scope){
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View_Summary view = app->get_active_view(app);
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Buffer_Summary buffer = app->get_buffer(app, view.buffer_id);
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int start_pos = view.cursor.pos - 1;
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Stream_Chunk chunk;
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char chunk_space[(1 << 10)];
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int result = 0;
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int found_result = 0;
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int i = start_pos;
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int still_looping = 1;
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int nesting_counter = 0;
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char at_cursor = 0;
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if (init_stream_chunk(&chunk, app, &buffer, i, chunk_space, sizeof(chunk_space))){
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do{
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for (; i >= chunk.start; --i){
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at_cursor = chunk.data[i];
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if (at_cursor == '}'){
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++nesting_counter;
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}
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else if (at_cursor == '{'){
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if (nesting_counter == 0){
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found_result = 1;
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result = i;
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goto finished;
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}
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else{
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--nesting_counter;
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}
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}
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}
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still_looping = backward_stream_chunk(&chunk);
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} while(still_looping);
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}
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finished:
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if (found_result){
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app->view_set_cursor(app, &view, seek_pos(result), 0);
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}
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}
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// NOTE(allen): Incomplete
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#if 0
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CUSTOM_COMMAND_SIG(complete_word){
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app->print_message(app, literal("complete_word\n"));
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View_Summary view = app->get_active_view(app);
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Buffer_Summary buffer = app->get_buffer(app, view.buffer_id);
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int start = 0;
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int end = 0;
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end = view.cursor.pos;
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push_parameter(app, par_flags, BoundryAlphanumeric);
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exec_command(app, cmdid_seek_left);
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app->refresh_view(app, &view);
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start = view.cursor.pos;
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String complete_string;
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int size = (end - start);
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char complete_space[256];
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if (size < sizeof(complete_space) - 1){
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complete_string = make_fixed_width_string(complete_space);
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app->buffer_read_range(app, &buffer, start, end, complete_space);
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complete_string.size = size;
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complete_string.str[size] = 0;
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// TODO(allen): Complete this when the heavy duty coroutine stuff
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// and the hash table are available.
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app->print_message(app, complete_string.str, complete_string.size);
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}
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}
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#endif
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// TODO(allen): Query theme settings
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#if 0
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CUSTOM_COMMAND_SIG(save_theme_settings){
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FILE *file = fopen(".4coder_settings", "rb");
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char theme_name[128];
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char font_name[128];
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fscanf(file, "%*128s %*128s", theme_name, font_name);
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if (file){
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replace_char(theme_name, '#', ' ');
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replace_char(font_name, '#', ' ');
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fclose(file);
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app->change_theme(app, theme_name, strlen(theme_name));
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app->change_font(app, font_name, strlen(font_name));
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}
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}
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#endif
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void experiment_extension(Bind_Helper *context){
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bind(context, 'k', MDFR_ALT, kill_rect);
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bind(context, '/', MDFR_ALT, mark_matching_brace);
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bind(context, '\'', MDFR_ALT, cursor_to_surrounding_scope);
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}
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#include <stdio.h>
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#define SETTINGS_FILE ".4coder_settings"
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HOOK_SIG(experimental_start_hook){
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my_start(app);
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char theme_name[128];
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char font_name[128];
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FILE *file = fopen(SETTINGS_FILE, "rb");
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if (!file){
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char module_path[512];
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int len;
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len = app->get_4ed_path(app, module_path, 448);
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memcpy(module_path+len, SETTINGS_FILE, sizeof(SETTINGS_FILE));
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file = fopen(module_path, "rb");
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}
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if (file){
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fscanf(file, "%127s\n%127s", theme_name, font_name);
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replace_char(theme_name, '#', ' ');
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replace_char(font_name, '#', ' ');
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fclose(file);
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app->change_theme(app, theme_name, (int)strlen(theme_name));
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app->change_font(app, font_name, (int)strlen(font_name));
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}
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return(0);
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}
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int get_bindings(void *data, int size){
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Bind_Helper context_ = begin_bind_helper(data, size);
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Bind_Helper *context = &context_;
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set_hook(context, hook_start, experimental_start_hook);
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set_hook(context, hook_open_file, my_file_settings);
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set_scroll_rule(context, smooth_scroll_rule);
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default_keys(context, experiment_extension);
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int result = end_bind_helper(context);
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return(result);
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}
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// BOTTOM
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