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authorMax Kellermann <max@duempel.org>2015-06-26 16:43:27 +0200
committerMax Kellermann <max@duempel.org>2015-06-26 16:49:25 +0200
commit0756607e32ff7f8df3ad21368e00c7e4e60ba203 (patch)
tree6578f87a5350cb95fe1649f01758cbf5041cba00 /src/lib
parenta03be5a8a60f50bf2133c1b9920f6ba6c7beef22 (diff)
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lib/icu/Converter: add iconv() implementation
Diffstat (limited to 'src/lib')
-rw-r--r--src/lib/icu/Converter.cxx41
-rw-r--r--src/lib/icu/Converter.hxx13
2 files changed, 52 insertions, 2 deletions
diff --git a/src/lib/icu/Converter.cxx b/src/lib/icu/Converter.cxx
index 8f20813c4..72028c82e 100644
--- a/src/lib/icu/Converter.cxx
+++ b/src/lib/icu/Converter.cxx
@@ -31,6 +31,9 @@
#ifdef HAVE_ICU
#include "Util.hxx"
#include <unicode/ucnv.h>
+#elif defined(HAVE_ICONV)
+#include "util/Domain.hxx"
+static constexpr Domain iconv_domain("iconv");
#elif defined(HAVE_GLIB)
#include "util/Domain.hxx"
static constexpr Domain g_iconv_domain("g_iconv");
@@ -61,6 +64,20 @@ IcuConverter::Create(const char *charset, Error &error)
}
return new IcuConverter(converter);
+#elif defined(HAVE_ICONV)
+ iconv_t to = iconv_open("utf-8", charset);
+ iconv_t from = iconv_open(charset, "utf-8");
+ if (to == (iconv_t)-1 || from == (iconv_t)-1) {
+ error.FormatErrno("Failed to initialize charset '%s'",
+ charset);
+ if (to != (iconv_t)-1)
+ iconv_close(to);
+ if (from != (iconv_t)-1)
+ iconv_close(from);
+ return nullptr;
+ }
+
+ return new IcuConverter(to, from);
#elif defined(HAVE_GLIB)
GIConv to = g_iconv_open("utf-8", charset);
GIConv from = g_iconv_open(charset, "utf-8");
@@ -79,6 +96,26 @@ IcuConverter::Create(const char *charset, Error &error)
}
#ifdef HAVE_ICU
+#elif defined(HAVE_ICONV)
+
+static AllocatedString<char>
+DoConvert(iconv_t conv, const char *src)
+{
+ // TODO: dynamic buffer?
+ char buffer[4096];
+ char *in = const_cast<char *>(src);
+ char *out = buffer;
+ size_t in_left = strlen(src);
+ size_t out_left = sizeof(buffer);
+
+ size_t n = iconv(conv, &in, &in_left, &out, &out_left);
+
+ if (n == static_cast<size_t>(-1) || in_left > 0)
+ return nullptr;
+
+ return AllocatedString<>::Duplicate(buffer, sizeof(buffer) - out_left);
+}
+
#elif defined(HAVE_GLIB)
static AllocatedString<char>
@@ -123,7 +160,7 @@ IcuConverter::ToUTF8(const char *s) const
const size_t target_length = target - buffer;
return UCharToUTF8({buffer, target_length});
-#elif defined(HAVE_GLIB)
+#elif defined(HAVE_ICONV) || defined(HAVE_GLIB)
return DoConvert(to_utf8, s);
#endif
}
@@ -155,7 +192,7 @@ IcuConverter::FromUTF8(const char *s) const
return AllocatedString<>::Duplicate(buffer, target);
-#elif defined(HAVE_GLIB)
+#elif defined(HAVE_ICONV) || defined(HAVE_GLIB)
return DoConvert(from_utf8, s);
#endif
}
diff --git a/src/lib/icu/Converter.hxx b/src/lib/icu/Converter.hxx
index fd5ea2132..d7a9a2113 100644
--- a/src/lib/icu/Converter.hxx
+++ b/src/lib/icu/Converter.hxx
@@ -26,6 +26,9 @@
#ifdef HAVE_ICU
#include "thread/Mutex.hxx"
#define HAVE_ICU_CONVERTER
+#elif defined(HAVE_ICONV)
+#include <iconv.h>
+#define HAVE_ICU_CONVERTER
#elif defined(HAVE_GLIB)
#include <glib.h>
#define HAVE_ICU_CONVERTER
@@ -56,6 +59,11 @@ class IcuConverter {
UConverter *const converter;
IcuConverter(UConverter *_converter):converter(_converter) {}
+#elif defined(HAVE_ICONV)
+ const iconv_t to_utf8, from_utf8;
+
+ IcuConverter(iconv_t _to, iconv_t _from)
+ :to_utf8(_to), from_utf8(_from) {}
#elif defined(HAVE_GLIB)
const GIConv to_utf8, from_utf8;
@@ -66,6 +74,11 @@ class IcuConverter {
public:
#ifdef HAVE_ICU
~IcuConverter();
+#elif defined(HAVE_ICONV)
+ ~IcuConverter() {
+ iconv_close(to_utf8);
+ iconv_close(from_utf8);
+ }
#elif defined(HAVE_GLIB)
~IcuConverter() {
g_iconv_close(to_utf8);