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Codechange: use std::string instead of a temporary buffer for iconv calls

This commit is contained in:
Rubidium 2023-06-30 18:15:32 +02:00 committed by rubidium42
parent 0ea3e338ab
commit d5c75bd655
1 changed files with 12 additions and 15 deletions
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27
src/os/unix/unix.cpp
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@ -124,29 +124,30 @@ static const char *GetLocalCode()
* Convert between locales, which from and which to is set in the calling
* functions OTTD2FS() and FS2OTTD().
*/
static const char *convert_tofrom_fs(iconv_t convd, const char *name, char *outbuf, size_t outlen)
static std::string convert_tofrom_fs(iconv_t convd, const std::string &name)
{
/* There are different implementations of iconv. The older ones,
* e.g. SUSv2, pass a const pointer, whereas the newer ones, e.g.
* IEEE 1003.1 (2004), pass a non-const pointer. */
#ifdef HAVE_NON_CONST_ICONV
char *inbuf = const_cast<char*>(name);
char *inbuf = const_cast<char*>(name.data());
#else
const char *inbuf = name;
const char *inbuf = name.data();
#endif
size_t inlen = strlen(name);
char *buf = outbuf;
strecpy(outbuf, name, outbuf + outlen);
/* If the output is UTF-32, then 1 ASCII character becomes 4 bytes. */
size_t inlen = name.size();
std::string buf(inlen * 4, '\0');
size_t outlen = buf.size();
char *outbuf = buf.data();
iconv(convd, nullptr, nullptr, nullptr, nullptr);
if (iconv(convd, &inbuf, &inlen, &outbuf, &outlen) == (size_t)(-1)) {
Debug(misc, 0, "[iconv] error converting '{}'. Errno {}", name, errno);
return name;
}
*outbuf = '\0';
/* FIX: invalid characters will abort conversion, but they shouldn't occur? */
buf.resize(outbuf - buf.data());
return buf;
}
@ -158,8 +159,6 @@ static const char *convert_tofrom_fs(iconv_t convd, const char *name, char *outb
std::string OTTD2FS(const std::string &name)
{
static iconv_t convd = (iconv_t)(-1);
char buf[1024] = {};
if (convd == (iconv_t)(-1)) {
const char *env = GetLocalCode();
convd = iconv_open(env, INTERNALCODE);
@ -169,7 +168,7 @@ std::string OTTD2FS(const std::string &name)
}
}
return convert_tofrom_fs(convd, name.c_str(), buf, lengthof(buf));
return convert_tofrom_fs(convd, name);
}
/**
@ -180,8 +179,6 @@ std::string OTTD2FS(const std::string &name)
std::string FS2OTTD(const std::string &name)
{
static iconv_t convd = (iconv_t)(-1);
char buf[1024] = {};
if (convd == (iconv_t)(-1)) {
const char *env = GetLocalCode();
convd = iconv_open(INTERNALCODE, env);
@ -191,7 +188,7 @@ std::string FS2OTTD(const std::string &name)
}
}
return convert_tofrom_fs(convd, name.c_str(), buf, lengthof(buf));
return convert_tofrom_fs(convd, name);
}
#endif /* WITH_ICONV */