iconv: provides a iconv implementions

2 files changed, 95 insertions, 0 deletions

diff --git a/iconv.c b/iconv.c
new file mode 100644
index 0000000..f13ba61
--- /dev/null
+++ b/iconv.c
@@ -0,0 +1,67 @@
+#include "iconv.h"
+#include "uniconv.h"
+
+#include <errno.h>
+
+iconv_t uc_iconv_open(const char *to, const char *from)
+{
+    uniconv_t *uc = uniconv_open(to, from);
+    if (!uc)
+	return (iconv_t)-1;
+    return uc;
+}
+
+size_t uc_iconv (iconv_t cd, char **inbuf,
+		 size_t *inbytesleft,
+		 char **outbuf,
+		 size_t *outbytesleft)
+{
+    int ret;
+
+    if (cd == (iconv_t)-1 || !cd) {
+	errno = EBADF;
+	return (size_t)-1;
+    }
+
+    ret = uniconv_conv(cd, (const char **)inbuf, inbytesleft,
+		       outbuf, outbytesleft);
+    if (ret == UNICONV_EBADF) {
+	errno = EBADF;
+	return (size_t)-1;
+    } else if (ret == UNICONV_EINVAL) {
+	errno = EINVAL;
+	return (size_t)-1;
+    } else if (ret == UNICONV_E2BIG) {
+	errno = E2BIG;
+	return (size_t)-1;
+    } else if (ret == UNICONV_EILSEQ) {
+	errno = EILSEQ;
+	return (size_t)-1;
+    }
+
+    return ret;
+}
+
+int uc_iconv_close (iconv_t cd)
+{
+    if (cd == (iconv_t)-1 || !cd) {
+	errno = EBADF;
+	return -1;
+    }
+
+    uniconv_close(cd);
+    return 0;
+}
+
+#ifdef __GNUC__
+#define weak_alias(name, aliasname) _weak_alias(name, aliasname)
+#define _weak_alias(name, aliasname) \
+  extern __typeof (name) aliasname __attribute__ ((weak, alias (#name)));
+#undef iconv_open
+#undef iconv
+#undef iconv_close
+weak_alias (uc_iconv_open, iconv_open)
+weak_alias (uc_iconv, iconv)
+weak_alias (uc_iconv_close, iconv_close)
+#endif
+
diff --git a/iconv.h b/iconv.h
new file mode 100644
index 0000000..0648fd3
--- /dev/null
+++ b/iconv.h
@@ -0,0 +1,28 @@
+#ifndef UNICONV_ICONV_H
+#define UNICONV_ICONV_H
+
+#include <stddef.h>
+
+#ifdef __cplusplus
+#define extern "C" {
+#endif
+
+typedef void* iconv_t;
+
+extern iconv_t uc_iconv_open(const char *to, const char *from);
+#define iconv_open(to, from) uc_iconv(to, from)
+
+extern size_t uc_iconv (iconv_t cd, char **inbuf,
+			size_t *inbytesleft,
+			char **outbuf,
+			size_t *outbytesleft);
+#define iconv(cd, ib, ibl, ob, obl) uc_iconv(cd, ib, ibl, ob, obl)
+
+extern int uc_iconv_close (iconv_t cd);
+#define iconv_close(cd) uc_iconv_close(cd)
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif