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lib/icu/Util: pass std::string_view

This commit is contained in:
Max Kellermann 2020-04-03 15:06:21 +02:00
parent 2d0798cd4d
commit 9dc530ab51
2 changed files with 10 additions and 14 deletions
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17
src/lib/icu/Util.cxx
View File

@ -31,18 +31,15 @@
#include <string.h>
AllocatedArray<UChar>
UCharFromUTF8(const char *src)
UCharFromUTF8(std::string_view src)
{
assert(src != nullptr);
const size_t src_length = strlen(src);
const size_t dest_capacity = src_length;
const size_t dest_capacity = src.size();
AllocatedArray<UChar> dest(dest_capacity);
UErrorCode error_code = U_ZERO_ERROR;
int32_t dest_length;
u_strFromUTF8(dest.begin(), dest_capacity, &dest_length,
src, src_length,
src.data(), src.size(),
&error_code);
if (U_FAILURE(error_code))
throw std::runtime_error(u_errorName(error_code));
@ -52,19 +49,17 @@ UCharFromUTF8(const char *src)
}
AllocatedString<>
UCharToUTF8(ConstBuffer<UChar> src)
UCharToUTF8(std::basic_string_view<UChar> src)
{
assert(!src.IsNull());
/* worst-case estimate */
size_t dest_capacity = 4 * src.size;
size_t dest_capacity = 4 * src.size();
std::unique_ptr<char[]> dest(new char[dest_capacity + 1]);
UErrorCode error_code = U_ZERO_ERROR;
int32_t dest_length;
u_strToUTF8(dest.get(), dest_capacity, &dest_length,
src.data, src.size,
src.data(), src.size(),
&error_code);
if (U_FAILURE(error_code))
throw std::runtime_error(u_errorName(error_code));

7
src/lib/icu/Util.hxx
View File

@ -22,7 +22,8 @@
#include <unicode/utypes.h>
template<typename T> struct ConstBuffer;
#include <string_view>
template<typename T> class AllocatedArray;
template<typename T> class AllocatedString;
@ -32,7 +33,7 @@ template<typename T> class AllocatedString;
* Throws std::runtime_error on error.
*/
AllocatedArray<UChar>
UCharFromUTF8(const char *src);
UCharFromUTF8(std::string_view src);
/**
* Wrapper for u_strToUTF8().
@ -40,6 +41,6 @@ UCharFromUTF8(const char *src);
* Throws std::runtime_error on error.
*/
AllocatedString<char>
UCharToUTF8(ConstBuffer<UChar> src);
UCharToUTF8(std::basic_string_view<UChar> src);
#endif