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authorRafael G. Martins <rafael@rafaelmartins.eng.br>2018-04-05 22:35:25 +0200
committerRafael G. Martins <rafael@rafaelmartins.eng.br>2018-04-05 22:35:35 +0200
commitc43b487246fdfd2ddc5c794763b18255ac6a318e (patch)
treec5b2b5ef837e9e796842155a6f7943745c61d135 /src/common/utf8.c
parent0a7f6a2659b363e1d68202b9fd863b57f7420f4f (diff)
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*: use squareball
yeah, changed my mind again :)
Diffstat (limited to 'src/common/utf8.c')
-rw-r--r--src/common/utf8.c102
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diff --git a/src/common/utf8.c b/src/common/utf8.c
deleted file mode 100644
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--- a/src/common/utf8.c
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@@ -1,102 +0,0 @@
-/*
- * blogc: A blog compiler.
- * Copyright (c) 2008-2010 Bjoern Hoehrmann <bjoern@hoehrmann.de>
- * Copyright (c) 2014-2017 Rafael G. Martins <rafael@rafaelmartins.eng.br>
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to
- * deal in the Software without restriction, including without limitation the
- * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
- * sell copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
- * IN THE SOFTWARE.
- */
-
-// Based on Bjoern Hoehrmann's algorithm.
-// See http://bjoern.hoehrmann.de/utf-8/decoder/dfa/ for details.
-
-#include <stdbool.h>
-#include <stddef.h>
-#include <stdint.h>
-#include "utils.h"
-
-#define UTF8_ACCEPT 0
-#define UTF8_REJECT 12
-
-
-static const uint8_t utf8d[] = {
- // The first part of the table maps bytes to character classes that
- // to reduce the size of the transition table and create bitmasks.
- 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
- 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
- 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
- 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
- 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, 9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,
- 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7, 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
- 8,8,2,2,2,2,2,2,2,2,2,2,2,2,2,2, 2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,
- 10,3,3,3,3,3,3,3,3,3,3,3,3,4,3,3, 11,6,6,6,5,8,8,8,8,8,8,8,8,8,8,8,
-
- // The second part is a transition table that maps a combination
- // of a state of the automaton and a character class to a state.
- 0,12,24,36,60,96,84,12,12,12,48,72, 12,12,12,12,12,12,12,12,12,12,12,12,
- 12, 0,12,12,12,12,12, 0,12, 0,12,12, 12,24,12,12,12,12,12,24,12,24,12,12,
- 12,12,12,12,12,12,12,24,12,12,12,12, 12,24,12,12,12,12,12,12,12,24,12,12,
- 12,12,12,12,12,12,12,36,12,36,12,12, 12,36,12,12,12,12,12,36,12,36,12,12,
- 12,36,12,12,12,12,12,12,12,12,12,12,
-};
-
-
-static uint32_t inline
-decode(uint32_t* state, uint32_t* codep, uint32_t byte) {
- uint32_t type = utf8d[byte];
-
- *codep = (*state != UTF8_ACCEPT) ?
- (byte & 0x3fu) | (*codep << 6) :
- (0xff >> type) & (byte);
-
- *state = utf8d[256 + *state + type];
- return *state;
-}
-
-
-bool
-bc_utf8_validate(const uint8_t *str, size_t len)
-{
- uint32_t codepoint;
- uint32_t state = 0;
-
- for (size_t i = 0; i < len; i++)
- decode(&state, &codepoint, str[i]);
-
- return state == UTF8_ACCEPT;
-}
-
-
-bool
-bc_utf8_validate_str(bc_string_t *str)
-{
- return bc_utf8_validate((uint8_t*) str->str, str->len);
-}
-
-
-size_t
-bc_utf8_skip_bom(const uint8_t *str, size_t len)
-{
- if (len < 3)
- return 0;
-
- if (str[0] == 0xef && str[1] == 0xbb && str[2] == 0xbf)
- return 3;
-
- return 0;
-}