1// Scintilla source code edit control
2/** @file CaseFolder.cxx
3 ** Classes for case folding.
4 **/
5// Copyright 1998-2013 by Neil Hodgson <neilh@scintilla.org>
6// The License.txt file describes the conditions under which this software may be distributed.
7
8#include <stdexcept>
9#include <vector>
10#include <algorithm>
11
12#include "CaseFolder.h"
13#include "CaseConvert.h"
14
15using namespace Scintilla::Internal;
16
17CaseFolder::~CaseFolder() {
18}
19
20CaseFolderTable::CaseFolderTable() noexcept : mapping{} {
21 for (size_t iChar=0; iChar<sizeof(mapping); iChar++) {
22 mapping[iChar] = static_cast<char>(iChar);
23 }
24}
25
26size_t CaseFolderTable::Fold(char *folded, size_t sizeFolded, const char *mixed, size_t lenMixed) {
27 if (lenMixed > sizeFolded) {
28 return 0;
29 } else {
30 for (size_t i=0; i<lenMixed; i++) {
31 folded[i] = mapping[static_cast<unsigned char>(mixed[i])];
32 }
33 return lenMixed;
34 }
35}
36
37void CaseFolderTable::SetTranslation(char ch, char chTranslation) noexcept {
38 mapping[static_cast<unsigned char>(ch)] = chTranslation;
39}
40
41void CaseFolderTable::StandardASCII() noexcept {
42 for (size_t iChar=0; iChar<sizeof(mapping); iChar++) {
43 if (iChar >= 'A' && iChar <= 'Z') {
44 mapping[iChar] = static_cast<char>(iChar - 'A' + 'a');
45 } else {
46 mapping[iChar] = static_cast<char>(iChar);
47 }
48 }
49}
50
51CaseFolderUnicode::CaseFolderUnicode() {
52 StandardASCII();
53 converter = ConverterFor(CaseConversion::fold);
54}
55
56size_t CaseFolderUnicode::Fold(char *folded, size_t sizeFolded, const char *mixed, size_t lenMixed) {
57 if ((lenMixed == 1) && (sizeFolded > 0)) {
58 folded[0] = mapping[static_cast<unsigned char>(mixed[0])];
59 return 1;
60 } else {
61 return converter->CaseConvertString(folded, sizeFolded, mixed, lenMixed);
62 }
63}
64