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Fix error loading LUT files with Turkish locale #984

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merged 3 commits into from
Apr 22, 2020
Merged

Fix error loading LUT files with Turkish locale #984

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3ca08fa
Fix error loading LUT files with Turkish locale
brechtvl Apr 8, 2020
1ddc3d8
Merge branch 'master' into turkish-i-fix
hodoulp Apr 22, 2020
6c1e4c6
Merge branch 'master' into turkish-i-fix
hodoulp Apr 22, 2020
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26 changes: 24 additions & 2 deletions src/utils/StringUtils.h
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Original file line number Diff line number Diff line change
Expand Up @@ -21,20 +21,42 @@ namespace StringUtils

using StringVec = std::vector<std::string>;

// Return the lower case character without taking into account locale like
// std::tolower, to avoid the "Turkish I" problem in file parsing.
inline unsigned char Lower(unsigned char c)
{
if(c >= 'A' && c <= 'Z') {
return c + ('a' - 'A');
}
else {
return c;
}
}

// Return the upper case character, without taking into account locale.
inline unsigned char Upper(unsigned char c)
{
if(c >= 'a' && c <= 'z') {
return c - ('a' - 'A');
}
else {
return c;
}
}

// Return the lower case string.
inline std::string Lower(std::string str)
{
std::transform(str.begin(), str.end(), str.begin(),
[](unsigned char c) { return std::tolower(c); });
[](unsigned char c) { return Lower(c); });
return str;
}

// Return the upper case string.
inline std::string Upper(std::string str)
{
std::transform(str.begin(), str.end(), str.begin(),
[](unsigned char c) { return std::toupper(c); });
[](unsigned char c) { return Upper(c); });
return str;
}

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