intermediate changes

ref:cde9a383711a11544ce7e107a78147fb96cc4029

1 files changed, 54 insertions, 0 deletions

diff --git a/library/cpp/charset/cp_encrec.cpp b/library/cpp/charset/cp_encrec.cpp
new file mode 100644
index 00000000000..1334afaa90b
--- /dev/null
+++ b/library/cpp/charset/cp_encrec.cpp
@@ -0,0 +1,54 @@
+#include "codepage.h"
+
+#include <util/string/cast.h>
+#include <util/stream/output.h>
+
+void Encoder::Tr(const wchar32* in, char* out, size_t len) const {
+    while (len--)
+        *out++ = Tr(*in++);
+}
+
+void Encoder::Tr(const wchar32* in, char* out) const {
+    do {
+        *out++ = Tr(*in);
+    } while (*in++);
+}
+
+void Recoder::Create(const CodePage& source, const Encoder* wideTarget) {
+    for (size_t i = 0; i != 256; ++i) {
+        Table[i] = wideTarget->Tr(source.unicode[i]);
+        Y_ASSERT(Table[i] != 0 || i == 0);
+    }
+}
+
+void Recoder::Create(const CodePage& page, const Encoder* widePage, wchar32 (*mapfunc)(wchar32)) {
+    for (size_t i = 0; i != 256; ++i) {
+        char c = widePage->Code((*mapfunc)(page.unicode[i]));
+        Table[i] = (c == 0 && i != 0) ? (unsigned char)i : (unsigned char)c;
+    }
+}
+
+void Recoder::Tr(const char* in, char* out, size_t len) const {
+    while (len--)
+        *out++ = Table[(unsigned char)*in++];
+}
+
+void Recoder::Tr(const char* in, char* out) const {
+    do {
+        *out++ = Table[(unsigned char)*in];
+    } while (*in++);
+}
+
+void Recoder::Tr(char* in_out, size_t len) const {
+    while (len--) {
+        *in_out = Table[(unsigned char)*in_out];
+        in_out++;
+    }
+}
+
+void Recoder::Tr(char* in_out) const {
+    // assuming that '\0' <--> '\0'
+    do {
+        *in_out = Table[(unsigned char)*in_out];
+    } while (*in_out++);
+}