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Allow converting strings between code pages in both directions.

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Co-authored-by: Fusxfaranto <fusxfaranto@gmail.com>
This commit is contained in:
Aaron van Geffen 2018-05-14 21:12:55 +02:00
parent ea80f0ea56
commit f29b42cc26
1 changed files with 45 additions and 3 deletions
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48
src/openrct2/core/String.cpp
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@ -18,6 +18,7 @@
#include <stdexcept>
#include <vector>
#ifndef _WIN32
#include <unicode/ucnv.h>
#include <unicode/unistr.h>
#endif
@ -37,6 +38,7 @@
#include "Math.hpp"
#include "Memory.hpp"
#include "String.hpp"
#include "StringBuilder.hpp"
namespace String
{
@ -570,6 +572,41 @@ namespace String
throw std::runtime_error("Unsupported code page: " + std::to_string(codePage));
}
}
static char* CodePageFromUTF8(const utf8* src, size_t srcMaxSize, sint32 dstCodePage)
{
UConverter *conv;
UErrorCode status = U_ZERO_ERROR;
const char* codepage = GetIcuCodePage(dstCodePage);
conv = ucnv_open(codepage, &status);
if (U_FAILURE(status))
{
log_error("ICU error: %s", u_errorName(status));
return nullptr;
}
const char *srcLimit = src + srcMaxSize;
auto sb = StringBuilder(64);
while ((src < srcLimit) && (*src != '\0'))
{
codepoint_t codepoint = ucnv_getNextUChar(conv, &src, srcLimit, &status);
if (U_FAILURE(status))
{
log_error("ICU error: %s", u_errorName(status));
return nullptr;
}
sb.Append(codepoint);
}
ucnv_close(conv);
return (char*) sb.StealString();
}
#endif
std::string Convert(const std::string_view& src, sint32 srcCodePage, sint32 dstCodePage)
@ -597,10 +634,15 @@ namespace String
#else
const char* codepage = GetIcuCodePage(srcCodePage);
icu::UnicodeString convertString(src.data(), codepage);
std::string result;
if (dstCodePage == CODE_PAGE::CP_UTF8)
convertString.toUTF8String(result);
std::string result;
convertString.toUTF8String(result);
if (dstCodePage != CODE_PAGE::CP_UTF8)
{
result = CodePageFromUTF8(result.c_str(), result.length(), dstCodePage);
}
return result;
#endif
}