1145 lines
33 KiB
C++
1145 lines
33 KiB
C++
/*
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* Mr. 4th Dimention - Allen Webster
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* Four Tech
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*
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* public domain -- no warranty is offered or implied; use this code at your own risk
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*
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* 24.10.2015
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*
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* Buffer data object
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* type - Golden Array
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*
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*/
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// TOP
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#define Buffer_Init_Type cat_4tech(Buffer_Type, _Init)
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#define Buffer_Stringify_Type cat_4tech(Buffer_Type, _Stringify_Loop)
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#define Buffer_Backify_Type cat_4tech(Buffer_Type, _Backify_Loop)
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#if BUFFER_EXPERIMENT_SCALPEL <= 2
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inline_4tech void
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buffer_stringify(Buffer_Type *buffer, int start, int end, char *out){
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for (Buffer_Stringify_Type loop = buffer_stringify_loop(buffer, start, end);
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buffer_stringify_good(&loop);
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buffer_stringify_next(&loop)){
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memcpy_4tech(out, loop.data, loop.size);
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out += loop.size;
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}
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}
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internal_4tech int
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buffer_convert_out(Buffer_Type *buffer, char *dest, int max){
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Buffer_Stringify_Type loop;
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int size, out_size, pos, result;
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size = buffer_size(buffer);
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assert_4tech(size + buffer->line_count < max);
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pos = 0;
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for (loop = buffer_stringify_loop(buffer, 0, size);
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buffer_stringify_good(&loop);
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buffer_stringify_next(&loop)){
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result = eol_convert_out(dest + pos, max - pos, loop.data, loop.size, &out_size);
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assert_4tech(result);
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pos += out_size;
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}
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return(pos);
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}
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internal_4tech int
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buffer_count_newlines(Buffer_Type *buffer, int start, int end){
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Buffer_Stringify_Type loop;
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int i;
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int count;
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assert_4tech(0 <= start);
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assert_4tech(start <= end);
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assert_4tech(end <= buffer_size(buffer));
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count = 0;
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for (loop = buffer_stringify_loop(buffer, start, end);
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buffer_stringify_good(&loop);
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buffer_stringify_next(&loop)){
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for (i = 0; i < loop.size; ++i){
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count += (loop.data[i] == '\n');
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}
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}
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return(count);
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}
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#endif
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#if BUFFER_EXPERIMENT_SCALPEL <= 2
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internal_4tech int
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buffer_seek_whitespace_down(Buffer_Type *buffer, int pos){
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Buffer_Stringify_Type loop;
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char *data;
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int end;
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int size;
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int no_hard;
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int prev_endline;
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size = buffer_size(buffer);
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loop = buffer_stringify_loop(buffer, pos, size);
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for (;buffer_stringify_good(&loop);
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buffer_stringify_next(&loop)){
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end = loop.size + loop.absolute_pos;
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data = loop.data - loop.absolute_pos;
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for (;pos < end; ++pos){
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if (!is_whitespace(data[pos])) goto buffer_seek_whitespace_down_mid;
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}
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}
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buffer_seek_whitespace_down_mid:
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no_hard = 0;
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prev_endline = -1;
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for (;buffer_stringify_good(&loop);
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buffer_stringify_next(&loop)){
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end = loop.size + loop.absolute_pos;
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data = loop.data - loop.absolute_pos;
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for (; pos < end; ++pos){
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if (data[pos] == '\n'){
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if (no_hard) goto buffer_seek_whitespace_down_end;
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else{
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no_hard = 1;
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prev_endline = pos;
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}
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}
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else if (!is_whitespace(data[pos])){
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no_hard = 0;
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}
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}
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}
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buffer_seek_whitespace_down_end:
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if (prev_endline == -1 || prev_endline+1 >= size) pos = size;
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else pos = prev_endline+1;
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return pos;
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}
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internal_4tech int
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buffer_seek_whitespace_up(Buffer_Type *buffer, int pos){
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Buffer_Backify_Type loop;
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char *data;
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int end;
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int size;
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int no_hard;
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size = buffer_size(buffer);
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loop = buffer_backify_loop(buffer, pos, 1);
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for (;buffer_backify_good(&loop);
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buffer_backify_next(&loop)){
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end = loop.absolute_pos;
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data = loop.data - loop.absolute_pos;
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for (;pos >= end; --pos){
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if (!is_whitespace(data[pos])) goto buffer_seek_whitespace_up_mid;
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}
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}
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buffer_seek_whitespace_up_mid:
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no_hard = 0;
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for (;buffer_backify_good(&loop);
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buffer_backify_next(&loop)){
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end = loop.absolute_pos;
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data = loop.data - loop.absolute_pos;
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for (; pos >= end; --pos){
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if (data[pos] == '\n'){
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if (no_hard) goto buffer_seek_whitespace_up_end;
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else no_hard = 1;
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}
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else if (!is_whitespace(data[pos])){
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no_hard = 0;
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}
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}
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}
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buffer_seek_whitespace_up_end:
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if (pos != 0) ++pos;
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return pos;
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}
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internal_4tech int
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buffer_seek_whitespace_right(Buffer_Type *buffer, int pos){
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Buffer_Stringify_Type loop;
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char *data;
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int end;
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int size;
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size = buffer_size(buffer);
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loop = buffer_stringify_loop(buffer, pos, size);
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for (;buffer_stringify_good(&loop);
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buffer_stringify_next(&loop)){
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end = loop.size + loop.absolute_pos;
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data = loop.data - loop.absolute_pos;
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for (; pos < end && is_whitespace(data[pos]); ++pos);
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if (!is_whitespace(data[pos])) break;
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}
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for (;buffer_stringify_good(&loop);
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buffer_stringify_next(&loop)){
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end = loop.size + loop.absolute_pos;
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data = loop.data - loop.absolute_pos;
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for (; pos < end && !is_whitespace(data[pos]); ++pos);
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if (is_whitespace(data[pos])) break;
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}
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return(pos);
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}
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internal_4tech int
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buffer_seek_whitespace_left(Buffer_Type *buffer, int pos){
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Buffer_Backify_Type loop;
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char *data;
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int end;
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int size;
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--pos;
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if (pos > 0){
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size = buffer_size(buffer);
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loop = buffer_backify_loop(buffer, pos, 1);
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for (;buffer_backify_good(&loop);
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buffer_backify_next(&loop)){
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end = loop.absolute_pos;
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data = loop.data - loop.absolute_pos;
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for (; pos >= end && is_whitespace(data[pos]); --pos);
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if (!is_whitespace(data[pos])) break;
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}
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for (;buffer_backify_good(&loop);
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buffer_backify_next(&loop)){
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end = loop.absolute_pos;
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data = loop.data - loop.absolute_pos;
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for (; pos >= end && !is_whitespace(data[pos]); --pos);
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if (is_whitespace(data[pos])) break;
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}
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if (pos != 0) ++pos;
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}
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else{
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pos = 0;
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}
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return(pos);
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}
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internal_4tech int
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buffer_seek_alphanumeric_right(Buffer_Type *buffer, int pos){
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Buffer_Stringify_Type loop;
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char *data;
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int end;
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int size;
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size = buffer_size(buffer);
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loop = buffer_stringify_loop(buffer, pos, size);
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for (;buffer_stringify_good(&loop);
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buffer_stringify_next(&loop)){
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end = loop.size + loop.absolute_pos;
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data = loop.data - loop.absolute_pos;
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for (; pos < end && is_alphanumeric_true(data[pos]); ++pos);
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if (!is_alphanumeric_true(data[pos])) break;
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}
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for (;buffer_stringify_good(&loop);
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buffer_stringify_next(&loop)){
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end = loop.size + loop.absolute_pos;
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data = loop.data - loop.absolute_pos;
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for (; pos < end && !is_alphanumeric_true(data[pos]); ++pos);
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if (is_alphanumeric_true(data[pos])) break;
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}
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return(pos);
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}
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internal_4tech int
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buffer_seek_alphanumeric_left(Buffer_Type *buffer, int pos){
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Buffer_Backify_Type loop;
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char *data;
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int end;
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int size;
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--pos;
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if (pos >= 0){
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size = buffer_size(buffer);
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loop = buffer_backify_loop(buffer, pos, 1);
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for (;buffer_backify_good(&loop);
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buffer_backify_next(&loop)){
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end = loop.absolute_pos;
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data = loop.data - end;
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for (; pos >= end && !is_alphanumeric_true(data[pos]); --pos);
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if (is_alphanumeric_true(data[pos])) break;
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}
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for (;buffer_backify_good(&loop);
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buffer_backify_next(&loop)){
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end = loop.absolute_pos;
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data = loop.data - end;
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for (; pos >= end && is_alphanumeric_true(data[pos]); --pos);
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if (!is_alphanumeric_true(data[pos])) break;
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}
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++pos;
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}
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else{
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pos = 0;
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}
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return(pos);
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}
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internal_4tech int
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buffer_seek_alphanumeric_or_camel_right(Buffer_Type *buffer, int pos, int an_pos){
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Buffer_Stringify_Type loop;
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char *data;
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int end, size;
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char ch, prev_ch;
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size = buffer_size(buffer);
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assert_4tech(pos <= an_pos);
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assert_4tech(an_pos <= size);
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++pos;
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if (pos < an_pos){
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loop = buffer_stringify_loop(buffer, pos, an_pos);
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if (buffer_stringify_good(&loop)){
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prev_ch = loop.data[0];
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++pos;
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for (;buffer_stringify_good(&loop);
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buffer_stringify_next(&loop)){
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end = loop.size + loop.absolute_pos;
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data = loop.data - loop.absolute_pos;
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for (; pos < end; ++pos){
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ch = data[pos];
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if (is_upper(ch) && is_lower(prev_ch)) goto buffer_seek_alphanumeric_or_camel_right_end;
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prev_ch = ch;
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}
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}
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}
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}
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else{
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pos = an_pos;
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}
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buffer_seek_alphanumeric_or_camel_right_end:
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return(pos);
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}
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internal_4tech int
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buffer_seek_alphanumeric_or_camel_left(Buffer_Type *buffer, int pos, int an_pos){
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Buffer_Backify_Type loop;
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char *data;
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int end, size;
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char ch, prev_ch;
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size = buffer_size(buffer);
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assert_4tech(an_pos <= pos);
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assert_4tech(0 <= an_pos);
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loop = buffer_backify_loop(buffer, pos, an_pos+1);
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if (buffer_backify_good(&loop)){
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prev_ch = loop.data[0];
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--pos;
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for (;buffer_backify_good(&loop);
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buffer_backify_next(&loop)){
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end = loop.absolute_pos;
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data = loop.data - loop.absolute_pos;
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for (; pos >= end; --pos){
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ch = data[pos];
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if (is_upper(ch) && is_lower(prev_ch)) goto buffer_seek_alphanumeric_or_camel_left_end;
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prev_ch = ch;
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}
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}
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}
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buffer_seek_alphanumeric_or_camel_left_end:
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return(pos);
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}
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internal_4tech int
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buffer_find_hard_start(Buffer_Type *buffer, int line_start, int *all_whitespace,
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int *all_space, int *preferred_indent, int tab_width){
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Buffer_Stringify_Type loop;
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char *data;
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int size, end;
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int result;
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char c;
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*all_space = 1;
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*preferred_indent = 0;
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size = buffer_size(buffer);
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tab_width -= 1;
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result = line_start;
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for (loop = buffer_stringify_loop(buffer, line_start, size);
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buffer_stringify_good(&loop);
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buffer_stringify_next(&loop)){
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end = loop.size + loop.absolute_pos;
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data = loop.data - loop.absolute_pos;
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for (; result < end; ++result){
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c = data[result];
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if (c == '\n' || c == 0){
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*all_whitespace = 1;
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goto buffer_find_hard_start_end;
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}
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if (c >= '!' && c <= '~') goto buffer_find_hard_start_end;
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if (c == '\t') *preferred_indent += tab_width;
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if (c != ' ') *all_space = 0;
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*preferred_indent += 1;
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}
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}
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buffer_find_hard_start_end:
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return(result);
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}
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internal_4tech int
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buffer_find_string(Buffer_Type *buffer, int start_pos, char *str, int len, char *spare){
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Buffer_Stringify_Type loop;
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char *data;
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int size, end;
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int pos;
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size = buffer_size(buffer);
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pos = start_pos;
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if (len > 0){
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for (loop = buffer_stringify_loop(buffer, start_pos, size - len + 1);
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buffer_stringify_good(&loop);
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buffer_stringify_next(&loop)){
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end = loop.size + loop.absolute_pos;
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data = loop.data - loop.absolute_pos;
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for (; pos < end; ++pos){
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if (*str == data[pos]){
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buffer_stringify(buffer, pos, pos + len, spare);
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if (is_match(str, spare, len))
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goto buffer_find_string_end;
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}
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}
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}
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}
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buffer_find_string_end:
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if (pos >= size - len + 1) pos = size;
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return(pos);
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}
|
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|
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internal_4tech int
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buffer_rfind_string(Buffer_Type *buffer, int start_pos, char *str, int len, char *spare){
|
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Buffer_Backify_Type loop;
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char *data;
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int end, size;
|
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int pos;
|
|
|
|
size = buffer_size(buffer);
|
|
|
|
pos = start_pos;
|
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if (pos > size - len) pos = size - len;
|
|
|
|
if (len > 0){
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for (loop = buffer_backify_loop(buffer, start_pos, 0);
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buffer_backify_good(&loop);
|
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buffer_backify_next(&loop)){
|
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end = loop.absolute_pos;
|
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data = loop.data - loop.absolute_pos;
|
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for (; pos >= end; --pos){
|
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if (*str == data[pos]){
|
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buffer_stringify(buffer, pos, pos + len, spare);
|
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if (is_match(str, spare, len))
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goto buffer_rfind_string_end;
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}
|
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}
|
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}
|
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}
|
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|
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buffer_rfind_string_end:
|
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return(pos);
|
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}
|
|
#endif
|
|
|
|
#if BUFFER_EXPERIMENT_SCALPEL <= 2
|
|
typedef struct{
|
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int i;
|
|
int count;
|
|
int start;
|
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} Buffer_Measure_Starts;
|
|
|
|
internal_4tech int
|
|
buffer_measure_starts(Buffer_Measure_Starts *state, Buffer_Type *buffer){
|
|
Buffer_Stringify_Type loop;
|
|
int *starts;
|
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int max;
|
|
char *data;
|
|
int size, end;
|
|
int start, count, i;
|
|
int result;
|
|
|
|
size = buffer_size(buffer);
|
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starts = buffer->line_starts;
|
|
max = buffer->line_max;
|
|
|
|
result = 0;
|
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|
|
i = state->i;
|
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count = state->count;
|
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start = state->start;
|
|
|
|
for (loop = buffer_stringify_loop(buffer, i, size);
|
|
buffer_stringify_good(&loop);
|
|
buffer_stringify_next(&loop)){
|
|
end = loop.size + loop.absolute_pos;
|
|
data = loop.data - loop.absolute_pos;
|
|
for (; i < end; ++i){
|
|
if (data[i] == '\n'){
|
|
if (count == max){
|
|
result = 1;
|
|
goto buffer_measure_starts_end;
|
|
}
|
|
|
|
starts[count++] = start;
|
|
start = i + 1;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (i == size){
|
|
starts[count++] = start;
|
|
}
|
|
|
|
buffer_measure_starts_end:
|
|
state->i = i;
|
|
state->count = count;
|
|
state->start = start;
|
|
|
|
return(result);
|
|
}
|
|
|
|
internal_4tech void
|
|
buffer_remeasure_starts(Buffer_Type *buffer, int line_start, int line_end, int line_shift, int text_shift){
|
|
Buffer_Stringify_Type loop;
|
|
int *starts;
|
|
int line_count;
|
|
char *data;
|
|
int size, end;
|
|
int line_i, char_i, start;
|
|
|
|
starts = buffer->line_starts;
|
|
line_count = buffer->line_count;
|
|
|
|
assert_4tech(0 <= line_start);
|
|
assert_4tech(line_start <= line_end);
|
|
assert_4tech(line_end < line_count);
|
|
assert_4tech(line_count + line_shift <= buffer->line_max);
|
|
|
|
++line_end;
|
|
if (text_shift != 0){
|
|
line_i = line_end;
|
|
starts += line_i;
|
|
for (; line_i < line_count; ++line_i, ++starts){
|
|
*starts += text_shift;
|
|
}
|
|
starts = buffer->line_starts;
|
|
}
|
|
|
|
if (line_shift != 0){
|
|
memmove_4tech(starts + line_end + line_shift, starts + line_end,
|
|
sizeof(int)*(line_count - line_end));
|
|
line_count += line_shift;
|
|
}
|
|
|
|
line_end += line_shift;
|
|
size = buffer_size(buffer);
|
|
char_i = starts[line_start];
|
|
line_i = line_start;
|
|
start = char_i;
|
|
|
|
for (loop = buffer_stringify_loop(buffer, char_i, size);
|
|
buffer_stringify_good(&loop);
|
|
buffer_stringify_next(&loop)){
|
|
end = loop.size + loop.absolute_pos;
|
|
data = loop.data - loop.absolute_pos;
|
|
for (; char_i < end; ++char_i){
|
|
if (data[char_i] == '\n'){
|
|
starts[line_i++] = start;
|
|
start = char_i + 1;
|
|
if (line_i >= line_end && start == starts[line_i]) goto buffer_remeasure_starts_end;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (char_i == size){
|
|
starts[line_i++] = start;
|
|
}
|
|
|
|
buffer_remeasure_starts_end:
|
|
assert_4tech(line_count >= 1);
|
|
buffer->line_count = line_count;
|
|
}
|
|
|
|
internal_4tech void
|
|
buffer_remeasure_widths(Buffer_Type *buffer, void *advance_data, int stride,
|
|
int line_start, int line_end, int line_shift){
|
|
Buffer_Stringify_Type loop;
|
|
int *starts;
|
|
float *widths;
|
|
int line_count;
|
|
char *data;
|
|
int size, end;
|
|
int i, j;
|
|
float width;
|
|
char ch;
|
|
|
|
starts = buffer->line_starts;
|
|
widths = buffer->line_widths;
|
|
line_count = buffer->line_count;
|
|
|
|
assert_4tech(0 <= line_start);
|
|
assert_4tech(line_start <= line_end);
|
|
assert_4tech(line_end < line_count);
|
|
assert_4tech(line_count <= buffer->widths_max);
|
|
|
|
++line_end;
|
|
if (line_shift != 0){
|
|
memmove_4tech(widths + line_end + line_shift, widths + line_end,
|
|
sizeof(float)*(line_count - line_end));
|
|
}
|
|
|
|
line_end += line_shift;
|
|
i = line_start;
|
|
j = starts[i];
|
|
|
|
if (line_end == line_count) size = buffer_size(buffer);
|
|
else size = starts[line_end];
|
|
|
|
width = 0;
|
|
|
|
for (loop = buffer_stringify_loop(buffer, j, size);
|
|
buffer_stringify_good(&loop);
|
|
buffer_stringify_next(&loop)){
|
|
end = loop.size + loop.absolute_pos;
|
|
data = loop.data - loop.absolute_pos;
|
|
|
|
for (; j < end; ++j){
|
|
ch = data[j];
|
|
if (ch == '\n'){
|
|
widths[i] = width;
|
|
++i;
|
|
assert_4tech(j + 1 == starts[i]);
|
|
width = 0;
|
|
}
|
|
else{
|
|
width += measure_character(advance_data, stride, ch);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
inline_4tech void
|
|
buffer_measure_widths(Buffer_Type *buffer, void *advance_data, int stride){
|
|
assert_4tech(buffer->line_count >= 1);
|
|
buffer_remeasure_widths(buffer, advance_data, stride, 0, buffer->line_count-1, 0);
|
|
}
|
|
|
|
internal_4tech void
|
|
buffer_measure_wrap_y(Buffer_Type *buffer, float *wraps,
|
|
float font_height, float max_width){
|
|
float *widths;
|
|
float y_pos;
|
|
int i, line_count;
|
|
|
|
line_count = buffer->line_count;
|
|
widths = buffer->line_widths;
|
|
y_pos = 0;
|
|
|
|
for (i = 0; i < line_count; ++i){
|
|
wraps[i] = y_pos;
|
|
if (widths[i] == 0) y_pos += font_height;
|
|
else y_pos += font_height*ceil_4tech(widths[i]/max_width);
|
|
}
|
|
}
|
|
|
|
internal_4tech int
|
|
buffer_get_line_index_range(Buffer_Type *buffer, int pos, int l_bound, int u_bound){
|
|
int *lines;
|
|
int start, end;
|
|
int i;
|
|
|
|
assert_4tech(0 <= l_bound);
|
|
assert_4tech(l_bound <= u_bound);
|
|
assert_4tech(u_bound <= buffer->line_count);
|
|
|
|
lines = buffer->line_starts;
|
|
|
|
start = l_bound;
|
|
end = u_bound;
|
|
for (;;){
|
|
i = (start + end) >> 1;
|
|
if (lines[i] < pos) start = i;
|
|
else if (lines[i] > pos) end = i;
|
|
else{
|
|
start = i;
|
|
break;
|
|
}
|
|
assert_4tech(start < end);
|
|
if (start == end - 1) break;
|
|
}
|
|
|
|
return(start);
|
|
}
|
|
|
|
inline_4tech int
|
|
buffer_get_line_index(Buffer_Type *buffer, int pos){
|
|
int result;
|
|
result = buffer_get_line_index_range(buffer, pos, 0, buffer->line_count);
|
|
return(result);
|
|
}
|
|
#endif
|
|
|
|
#ifndef NON_ABSTRACT_4TECH
|
|
internal_4tech int
|
|
buffer_get_line_index_from_wrapped_y(float *wraps, float y, float font_height, int l_bound, int u_bound){
|
|
int start, end, i, result;
|
|
start = l_bound;
|
|
end = u_bound;
|
|
for (;;){
|
|
i = (start + end) / 2;
|
|
if (wraps[i]+font_height <= y) start = i;
|
|
else if (wraps[i] > y) end = i;
|
|
else{
|
|
result = i;
|
|
break;
|
|
}
|
|
if (start >= end - 1){
|
|
result = start;
|
|
break;
|
|
}
|
|
}
|
|
return(result);
|
|
}
|
|
#endif
|
|
|
|
#ifndef NON_ABSTRACT_4TECH
|
|
|
|
typedef struct{
|
|
Full_Cursor cursor, prev_cursor;
|
|
} Seek_State;
|
|
|
|
internal_4tech int
|
|
cursor_seek_step(Seek_State *state, Buffer_Seek seek, int xy_seek, float max_width, float font_height,
|
|
char *advances, int stride, int size, char ch){
|
|
Full_Cursor cursor, prev_cursor;
|
|
float ch_width;
|
|
int result;
|
|
float x, px, y;
|
|
|
|
cursor = state->cursor;
|
|
prev_cursor = state->prev_cursor;
|
|
|
|
result = 1;
|
|
prev_cursor = cursor;
|
|
switch (ch){
|
|
case '\n':
|
|
++cursor.line;
|
|
cursor.unwrapped_y += font_height;
|
|
cursor.wrapped_y += font_height;
|
|
cursor.character = 1;
|
|
cursor.unwrapped_x = 0;
|
|
cursor.wrapped_x = 0;
|
|
break;
|
|
|
|
default:
|
|
++cursor.character;
|
|
if (ch == '\r') ch_width = *(float*)(advances + stride * '\\') + *(float*)(advances + stride * 'r');
|
|
else ch_width = *(float*)(advances + stride * ch);
|
|
|
|
if (cursor.wrapped_x + ch_width >= max_width){
|
|
cursor.wrapped_y += font_height;
|
|
cursor.wrapped_x = 0;
|
|
prev_cursor = cursor;
|
|
}
|
|
|
|
cursor.unwrapped_x += ch_width;
|
|
cursor.wrapped_x += ch_width;
|
|
|
|
break;
|
|
}
|
|
|
|
++cursor.pos;
|
|
|
|
if (cursor.pos > size){
|
|
cursor = prev_cursor;
|
|
result = 0;
|
|
goto cursor_seek_step_end;
|
|
}
|
|
|
|
x = y = px = 0;
|
|
|
|
switch (seek.type){
|
|
case buffer_seek_pos:
|
|
if (cursor.pos > seek.pos){
|
|
cursor = prev_cursor;
|
|
result = 0;
|
|
goto cursor_seek_step_end;
|
|
}break;
|
|
|
|
case buffer_seek_wrapped_xy:
|
|
x = cursor.wrapped_x; px = prev_cursor.wrapped_x;
|
|
y = cursor.wrapped_y; break;
|
|
|
|
case buffer_seek_unwrapped_xy:
|
|
x = cursor.unwrapped_x; px = prev_cursor.unwrapped_x;
|
|
y = cursor.unwrapped_y; break;
|
|
|
|
case buffer_seek_line_char:
|
|
if (cursor.line == seek.line && cursor.character >= seek.character){
|
|
result = 0;
|
|
goto cursor_seek_step_end;
|
|
}
|
|
else if (cursor.line > seek.line){
|
|
cursor = prev_cursor;
|
|
result = 0;
|
|
goto cursor_seek_step_end;
|
|
}break;
|
|
}
|
|
|
|
if (xy_seek){
|
|
if (y > seek.y){
|
|
cursor = prev_cursor;
|
|
result = 0;
|
|
goto cursor_seek_step_end;
|
|
}
|
|
|
|
if (y > seek.y - font_height && x >= seek.x){
|
|
if (!seek.round_down){
|
|
if (ch != '\n' && (seek.x - px) < (x - seek.x)) cursor = prev_cursor;
|
|
result = 0;
|
|
goto cursor_seek_step_end;
|
|
}
|
|
|
|
if (x > seek.x){
|
|
cursor = prev_cursor;
|
|
result = 0;
|
|
goto cursor_seek_step_end;
|
|
}
|
|
}
|
|
}
|
|
|
|
cursor_seek_step_end:
|
|
state->cursor = cursor;
|
|
state->prev_cursor = prev_cursor;
|
|
return(result);
|
|
}
|
|
|
|
#endif
|
|
|
|
#if BUFFER_EXPERIMENT_SCALPEL <= 2
|
|
internal_4tech Full_Cursor
|
|
buffer_cursor_seek(Buffer_Type *buffer, Buffer_Seek seek, float max_width, float font_height,
|
|
void *advance_data, int stride, Full_Cursor cursor){
|
|
Buffer_Stringify_Type loop;
|
|
char *data;
|
|
int size, end;
|
|
int i;
|
|
int result;
|
|
|
|
Seek_State state;
|
|
char *advances;
|
|
int xy_seek;
|
|
|
|
size = buffer_size(buffer);
|
|
advances = (char*)advance_data;
|
|
xy_seek = (seek.type == buffer_seek_wrapped_xy || seek.type == buffer_seek_unwrapped_xy);
|
|
state.cursor = cursor;
|
|
|
|
result = 1;
|
|
i = cursor.pos;
|
|
for (loop = buffer_stringify_loop(buffer, i, size);
|
|
buffer_stringify_good(&loop);
|
|
buffer_stringify_next(&loop)){
|
|
end = loop.size + loop.absolute_pos;
|
|
data = loop.data - loop.absolute_pos;
|
|
for (; i < end && result; ++i){
|
|
result = cursor_seek_step(&state, seek, xy_seek, max_width, font_height,
|
|
advances, stride, size, data[i]);
|
|
}
|
|
}
|
|
if (result){
|
|
result = cursor_seek_step(&state, seek, xy_seek, max_width, font_height,
|
|
advances, stride, size, 0);
|
|
assert_4tech(result == 0);
|
|
}
|
|
|
|
return(state.cursor);
|
|
}
|
|
|
|
internal_4tech Full_Cursor
|
|
buffer_cursor_from_pos(Buffer_Type *buffer, int pos, float *wraps,
|
|
float max_width, float font_height, void *advance_data, int stride){
|
|
Full_Cursor result;
|
|
int line_index;
|
|
|
|
line_index = buffer_get_line_index_range(buffer, pos, 0, buffer->line_count);
|
|
result = make_cursor_hint(line_index, buffer->line_starts, wraps, font_height);
|
|
result = buffer_cursor_seek(buffer, seek_pos(pos), max_width, font_height,
|
|
advance_data, stride, result);
|
|
|
|
return(result);
|
|
}
|
|
|
|
internal_4tech Full_Cursor
|
|
buffer_cursor_from_unwrapped_xy(Buffer_Type *buffer, float x, float y, int round_down, float *wraps,
|
|
float max_width, float font_height, void *advance_data, int stride){
|
|
Full_Cursor result;
|
|
int line_index;
|
|
|
|
line_index = (int)(y / font_height);
|
|
if (line_index >= buffer->line_count) line_index = buffer->line_count - 1;
|
|
if (line_index < 0) line_index = 0;
|
|
|
|
result = make_cursor_hint(line_index, buffer->line_starts, wraps, font_height);
|
|
result = buffer_cursor_seek(buffer, seek_unwrapped_xy(x, y, round_down), max_width, font_height,
|
|
advance_data, stride, result);
|
|
|
|
return(result);
|
|
}
|
|
|
|
internal_4tech Full_Cursor
|
|
buffer_cursor_from_wrapped_xy(Buffer_Type *buffer, float x, float y, int round_down, float *wraps,
|
|
float max_width, float font_height, void *advance_data, int stride){
|
|
Full_Cursor result;
|
|
int line_index;
|
|
|
|
line_index = buffer_get_line_index_from_wrapped_y(wraps, y, font_height, 0, buffer->line_count);
|
|
result = make_cursor_hint(line_index, buffer->line_starts, wraps, font_height);
|
|
result = buffer_cursor_seek(buffer, seek_wrapped_xy(x, y, round_down), max_width, font_height,
|
|
advance_data, stride, result);
|
|
|
|
return(result);
|
|
}
|
|
#endif
|
|
|
|
#if BUFFER_EXPERIMENT_SCALPEL <= 2
|
|
internal_4tech void
|
|
buffer_invert_edit_shift(Buffer_Type *buffer, Buffer_Edit edit, Buffer_Edit *inverse, char *strings,
|
|
int *str_pos, int max, int shift_amount){
|
|
int pos;
|
|
int len;
|
|
|
|
pos = *str_pos;
|
|
len = edit.end - edit.start;
|
|
assert_4tech(pos + len <= max);
|
|
*str_pos = pos + len;
|
|
|
|
inverse->str_start = pos;
|
|
inverse->len = len;
|
|
inverse->start = edit.start + shift_amount;
|
|
inverse->end = edit.start + edit.len + shift_amount;
|
|
buffer_stringify(buffer, edit.start, edit.end, strings + pos);
|
|
}
|
|
|
|
inline_4tech void
|
|
buffer_invert_edit(Buffer_Type *buffer, Buffer_Edit edit, Buffer_Edit *inverse, char *strings,
|
|
int *str_pos, int max){
|
|
buffer_invert_edit_shift(buffer, edit, inverse, strings, str_pos, max, 0);
|
|
}
|
|
|
|
typedef struct{
|
|
int i;
|
|
int shift_amount;
|
|
int len;
|
|
} Buffer_Invert_Batch;
|
|
|
|
internal_4tech int
|
|
buffer_invert_batch(Buffer_Invert_Batch *state, Buffer_Type *buffer, Buffer_Edit *edits, int count,
|
|
Buffer_Edit *inverse, char *strings, int *str_pos, int max){
|
|
Buffer_Edit *edit, *inv_edit;
|
|
int shift_amount;
|
|
int result;
|
|
int i;
|
|
|
|
result = 0;
|
|
i = state->i;
|
|
shift_amount = state->shift_amount;
|
|
|
|
edit = edits + i;
|
|
inv_edit = inverse + i;
|
|
|
|
for (; i < count; ++i, ++edit, ++inv_edit){
|
|
if (*str_pos + edit->end - edit->start <= max){
|
|
buffer_invert_edit_shift(buffer, *edit, inv_edit, strings, str_pos, max, shift_amount);
|
|
shift_amount += (edit->len - (edit->end - edit->start));
|
|
}
|
|
else{
|
|
result = 1;
|
|
state->len = edit->end - edit->start;
|
|
}
|
|
}
|
|
|
|
state->i = i;
|
|
state->shift_amount = shift_amount;
|
|
|
|
return(result);
|
|
}
|
|
#endif
|
|
|
|
#if BUFFER_EXPERIMENT_SCALPEL <= 1
|
|
internal_4tech void
|
|
buffer_batch_edit(Buffer_Type *buffer, Buffer_Edit *sorted_edits, char *strings, int edit_count){
|
|
Buffer_Batch_State state;
|
|
debug_4tech(int result);
|
|
|
|
state.i = 0;
|
|
state.shift_total = 0;
|
|
|
|
debug_4tech(result =)
|
|
buffer_batch_edit_step(&state, buffer, sorted_edits, strings, edit_count);
|
|
assert_4tech(result == 0);
|
|
}
|
|
#endif
|
|
|
|
#if BUFFER_EXPERIMENT_SCALPEL <= 2
|
|
internal_4tech void
|
|
buffer_get_render_data(Buffer_Type *buffer, float *wraps, Buffer_Render_Item *items, int max, int *count,
|
|
float port_x, float port_y, float scroll_x, float scroll_y, int wrapped,
|
|
float width, float height, void *advance_data, int stride, float font_height){
|
|
Buffer_Stringify_Type loop;
|
|
Full_Cursor start_cursor;
|
|
Buffer_Render_Item *item;
|
|
char *data;
|
|
int size, end;
|
|
float shift_x, shift_y;
|
|
float x, y;
|
|
int i, item_i;
|
|
float ch_width, ch_width_sub;
|
|
char ch;
|
|
|
|
size = buffer_size(buffer);
|
|
|
|
shift_x = port_x - scroll_x;
|
|
shift_y = port_y - scroll_y;
|
|
if (wrapped){
|
|
start_cursor = buffer_cursor_from_wrapped_xy(buffer, 0, scroll_y, 0, wraps,
|
|
width, font_height, advance_data, stride);
|
|
shift_y += start_cursor.wrapped_y;
|
|
}
|
|
else{
|
|
start_cursor = buffer_cursor_from_unwrapped_xy(buffer, 0, scroll_y, 0, wraps,
|
|
width, font_height, advance_data, stride);
|
|
shift_y += start_cursor.unwrapped_y;
|
|
}
|
|
|
|
x = shift_x;
|
|
y = shift_y;
|
|
item_i = 0;
|
|
item = items + item_i;
|
|
|
|
for (loop = buffer_stringify_loop(buffer, start_cursor.pos, size);
|
|
buffer_stringify_good(&loop);
|
|
buffer_stringify_next(&loop)){
|
|
|
|
end = loop.size + loop.absolute_pos;
|
|
data = loop.data - loop.absolute_pos;
|
|
|
|
for (i = loop.absolute_pos; i < end; ++i){
|
|
ch = data[i];
|
|
ch_width = measure_character(advance_data, stride, ch);
|
|
|
|
if (ch_width + x > width + shift_x && wrapped){
|
|
x = shift_x;
|
|
y += font_height;
|
|
}
|
|
if (y > height + shift_y) goto buffer_get_render_data_end;
|
|
|
|
switch (ch){
|
|
case '\n':
|
|
write_render_item_inline(item, i, ' ', x, y, advance_data, stride, font_height);
|
|
++item_i;
|
|
++item;
|
|
|
|
x = shift_x;
|
|
y += font_height;
|
|
break;
|
|
|
|
case 0:
|
|
ch_width = write_render_item_inline(item, i, '\\', x, y, advance_data, stride, font_height);
|
|
++item_i;
|
|
++item;
|
|
x += ch_width;
|
|
|
|
ch_width = write_render_item_inline(item, i, '0', x, y, advance_data, stride, font_height);
|
|
++item_i;
|
|
++item;
|
|
x += ch_width;
|
|
break;
|
|
|
|
case '\r':
|
|
ch_width = write_render_item_inline(item, i, '\\', x, y, advance_data, stride, font_height);
|
|
++item_i;
|
|
++item;
|
|
x += ch_width;
|
|
|
|
ch_width = write_render_item_inline(item, i, 'r', x, y, advance_data, stride, font_height);
|
|
++item_i;
|
|
++item;
|
|
x += ch_width;
|
|
break;
|
|
|
|
case '\t':
|
|
ch_width_sub = write_render_item_inline(item, i, '\\', x, y, advance_data, stride, font_height);
|
|
++item_i;
|
|
++item;
|
|
|
|
write_render_item_inline(item, i, 't', x + ch_width_sub, y, advance_data, stride, font_height);
|
|
++item_i;
|
|
++item;
|
|
x += ch_width;
|
|
break;
|
|
|
|
default:
|
|
write_render_item(item, i, ch, x, y, ch_width, font_height);
|
|
++item_i;
|
|
++item;
|
|
x += ch_width;
|
|
break;
|
|
}
|
|
if (y > height + shift_y) goto buffer_get_render_data_end;
|
|
}
|
|
}
|
|
|
|
buffer_get_render_data_end:
|
|
|
|
if (y <= height + shift_y || item == items){
|
|
ch = 0;
|
|
ch_width = measure_character(advance_data, stride, ' ');
|
|
write_render_item(item, size, ch, x, y, ch_width, font_height);
|
|
++item_i;
|
|
++item;
|
|
x += ch_width;
|
|
}
|
|
|
|
// TODO(allen): handle this with a control state
|
|
assert_4tech(item_i <= max);
|
|
*count = item_i;
|
|
}
|
|
#endif
|
|
|
|
#ifndef NON_ABSTRACT_4TECH
|
|
#define NON_ABSTRACT_4TECH 1
|
|
#endif
|
|
// BOTTOM
|
|
|