remove ceph code

[stor4nfv.git] / src / ceph / src / common / utf8.c

diff --git a/src/ceph/src/common/utf8.c b/src/ceph/src/common/utf8.c
deleted file mode 100644 (file)
index 5a8592f..0000000
--- a/src/ceph/src/common/utf8.c
+++ /dev/null
@@ -1,183 +0,0 @@
-// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
-// vim: ts=8 sw=2 smarttab
-/*
- * Ceph - scalable distributed file system
- *
- * Copyright (C) 2011 New Dream Network
- *
- * This is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License version 2.1, as published by the Free Software
- * Foundation.  See file COPYING.
- *
- */
-#include "common/utf8.h"
-
-#include <string.h>
-
-static int high_bits_set(int c)
-{
-       int ret = 0;
-       while (1) {
-               if ((c & 0x80) != 0x080)
-                       break;
-               c <<= 1;
-               ++ret;
-       }
-       return ret;
-}
-
-/* Encode a 31-bit UTF8 code point to 'buf'.
- * Assumes buf is of size MAX_UTF8_SZ
- * Returns -1 on failure; number of bytes in the encoded value otherwise.
- */
-int encode_utf8(unsigned long u, unsigned char *buf)
-{
-       int i;
-       unsigned long max_val[MAX_UTF8_SZ] = {
-               0x0000007ful, 0x000007fful, 0x0000fffful,
-               0x001ffffful, 0x03fffffful, 0x7ffffffful
-       };
-       static const int MAX_VAL_SZ = sizeof(max_val) / sizeof(max_val[0]);
-
-       for (i = 0; i < MAX_VAL_SZ; ++i) {
-               if (u <= max_val[i])
-                       break;
-       }
-       if (i == MAX_VAL_SZ) {
-               // This code point is too big to encode.
-               return -1;
-       }
-
-       if (i == 0) {
-               buf[0] = u;
-       }
-       else {
-               signed int j;
-               for (j = i; j > 0; --j) {
-                       buf[j] = 0x80 | (u & 0x3f);
-                       u >>= 6;
-               }
-
-               unsigned char mask = ~(0xFF >> (i + 1));
-               buf[0] = mask | u;
-       }
-
-       return i + 1;
-}
-
-/*
- * Decode a UTF8 character from an array of bytes. Return character code.
- * Upon error, return INVALID_UTF8_CHAR.
- */
-unsigned long decode_utf8(unsigned char *buf, int nbytes)
-{
-       unsigned long code;
-       int i, j;
-
-       if (nbytes <= 0)
-               return INVALID_UTF8_CHAR;
-
-       if (nbytes == 1) {
-               if (buf[0] >= 0x80)
-                       return INVALID_UTF8_CHAR;
-               return buf[0];
-       }
-
-       i = high_bits_set(buf[0]);
-       if (i != nbytes)
-               return INVALID_UTF8_CHAR;
-       code = buf[0] & (0xff >> i);
-       for (j = 1; j < nbytes; ++j) {
-               if ((buf[j] & 0xc0) != 0x80)
-                           return INVALID_UTF8_CHAR;
-               code = (code << 6) | (buf[j] & 0x3f);
-       }
-
-       // Check for invalid code points
-       if (code == 0xFFFE)
-           return INVALID_UTF8_CHAR;
-       if (code == 0xFFFF)
-           return INVALID_UTF8_CHAR;
-       if (code >= 0xD800 && code <= 0xDFFF)
-           return INVALID_UTF8_CHAR;
-
-       return code;
-}
-
-int check_utf8(const char *buf, int len)
-{
-       unsigned char u[MAX_UTF8_SZ];
-       int enc_len = 0;
-       int i = 0;
-       while (1) {
-               unsigned int c = buf[i];
-               if (i >= len || c < 0x80 || (c & 0xC0) != 0x80) {
-                       // the start of a new character. Process what we have
-                       // in the buffer.
-                       if (enc_len > 0) {
-                               int re_encoded_len;
-                               unsigned char re_encoded[MAX_UTF8_SZ];
-                               unsigned long code = decode_utf8(u, enc_len);
-                               if (code == INVALID_UTF8_CHAR) {
-                                       //printf("decoded to invalid utf8");
-                                       return i + 1;
-                               }
-                               re_encoded_len = encode_utf8(code, re_encoded);
-                               if (enc_len != re_encoded_len) {
-                                       //printf("originally encoded as %d bytes, "
-                                       //      "but was re-encoded to %d!\n",
-                                       //      enc_len, re_encoded_len);
-                                       return i + 1;
-                               }
-                               if (memcmp(u, re_encoded, enc_len) != 0) {
-                                       //printf("re-encoded to a different "
-                                       //      "byte stream!");
-                                       return i + 1;
-                               }
-                               //printf("code_point %lu\n", code);
-                       }
-                       enc_len = 0;
-                       if (i >= len)
-                               break;
-                       // start collecting again?
-                       if (c >= 0x80)
-                               u[enc_len++] = c;
-               } else {
-                       if (enc_len == MAX_UTF8_SZ) {
-                               //printf("too many enc_len in utf character!\n");
-                               return i + 1;
-                       }
-                       //printf("continuation byte...\n");
-                       u[enc_len++] = c;
-               }
-               ++i;
-       }
-       return 0;
-}
-
-int check_utf8_cstr(const char *buf)
-{
-       return check_utf8(buf, strlen(buf));
-}
-
-int is_control_character(int c)
-{
-       return (((c != 0) && (c < 0x20)) || (c == 0x7f));
-}
-
-int check_for_control_characters(const char *buf, int len)
-{
-       int i;
-       for (i = 0; i < len; ++i) {
-               if (is_control_character((int)(unsigned char)buf[i])) {
-                       return i + 1;
-               }
-       }
-       return 0;
-}
-
-int check_for_control_characters_cstr(const char *buf)
-{
-       return check_for_control_characters(buf, strlen(buf));
-}