utf8proc

annotate ruby/utf8proc_native.c @ 2:aaad485d5335

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Version 0.3

- changed normalization from NFC to NFKC for postgresql unifold function
- added support to mark the beginning of a grapheme cluster with 0xFF (option: CHARBOUND)
- added the ruby method String#chars, which is returning an array of UTF-8 encoded grapheme clusters
- added NLF2LF transformation in postgresql unifold function
- added the DECOMPOSE option, if you neither use COMPOSE or DECOMPOSE, no normalization will be performed (different from previous versions)
- using integer constants rather than C-strings for character properties
- fixed (hopefully) a problem with the ruby library on Mac OS X, which occured when compiler optimization was switched on
author jbe
date Fri Aug 04 12:00:00 2006 +0200 (2006-08-04)
parents 61a89ecc2fb9
children 4ee0d5f54af1
rev   line source
jbe@0 1 /*
jbe@0 2 * Copyright (c) 2006, FlexiGuided GmbH, Berlin, Germany
jbe@0 3 * Author: Jan Behrens <jan.behrens@flexiguided.de>
jbe@0 4 * All rights reserved.
jbe@0 5 *
jbe@0 6 * Redistribution and use in source and binary forms, with or without
jbe@0 7 * modification, are permitted provided that the following conditions are
jbe@0 8 * met:
jbe@0 9 *
jbe@0 10 * 1. Redistributions of source code must retain the above copyright
jbe@0 11 * notice, this list of conditions and the following disclaimer.
jbe@0 12 * 2. Redistributions in binary form must reproduce the above copyright
jbe@0 13 * notice, this list of conditions and the following disclaimer in the
jbe@0 14 * documentation and/or other materials provided with the distribution.
jbe@0 15 * 3. Neither the name of the FlexiGuided GmbH nor the names of its
jbe@0 16 * contributors may be used to endorse or promote products derived from
jbe@0 17 * this software without specific prior written permission.
jbe@0 18 *
jbe@0 19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
jbe@0 20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
jbe@0 21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
jbe@0 22 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
jbe@0 23 * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
jbe@0 24 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
jbe@0 25 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
jbe@0 26 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
jbe@0 27 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
jbe@0 28 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
jbe@0 29 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
jbe@0 30 *
jbe@0 31 */
jbe@0 32
jbe@0 33
jbe@0 34 /*
jbe@0 35 * File name: ruby/utf8proc_native.c
jbe@2 36 * Version: 0.3
jbe@2 37 * Last changed: 2006-08-04
jbe@0 38 *
jbe@0 39 * Description:
jbe@0 40 * Native part of the ruby wrapper for libutf8proc.
jbe@0 41 */
jbe@0 42
jbe@0 43
jbe@0 44 #include "../utf8proc.c"
jbe@0 45 #include "ruby.h"
jbe@0 46
jbe@0 47 typedef struct utf8proc_ruby_mapenv_struct {
jbe@0 48 int32_t *buffer;
jbe@0 49 } utf8proc_ruby_mapenv_t;
jbe@0 50
jbe@0 51 void utf8proc_ruby_mapenv_free(utf8proc_ruby_mapenv_t *env) {
jbe@0 52 free(env->buffer);
jbe@0 53 free(env);
jbe@0 54 }
jbe@0 55
jbe@0 56 VALUE utf8proc_ruby_module;
jbe@0 57 VALUE utf8proc_ruby_options;
jbe@0 58 VALUE utf8proc_ruby_eUnicodeError;
jbe@0 59 VALUE utf8proc_ruby_eInvalidUtf8Error;
jbe@0 60 VALUE utf8proc_ruby_eCodeNotAssignedError;
jbe@0 61
jbe@0 62 VALUE utf8proc_ruby_map_error(ssize_t result) {
jbe@0 63 VALUE excpt_class;
jbe@0 64 switch (result) {
jbe@0 65 case UTF8PROC_ERROR_NOMEM:
jbe@0 66 excpt_class = rb_eNoMemError; break;
jbe@0 67 case UTF8PROC_ERROR_OVERFLOW:
jbe@0 68 excpt_class = rb_eArgError; break;
jbe@0 69 case UTF8PROC_ERROR_INVALIDUTF8:
jbe@0 70 excpt_class = utf8proc_ruby_eInvalidUtf8Error; break;
jbe@0 71 case UTF8PROC_ERROR_NOTASSIGNED:
jbe@0 72 excpt_class = utf8proc_ruby_eCodeNotAssignedError; break;
jbe@0 73 default:
jbe@0 74 excpt_class = rb_eRuntimeError;
jbe@0 75 }
jbe@0 76 rb_raise(excpt_class, "%s", utf8proc_errmsg(result));
jbe@0 77 return Qnil;
jbe@0 78 }
jbe@0 79
jbe@0 80 VALUE utf8proc_ruby_map(VALUE self, VALUE str_param, VALUE options_param) {
jbe@0 81 VALUE str;
jbe@0 82 int options;
jbe@0 83 VALUE env_obj;
jbe@0 84 utf8proc_ruby_mapenv_t *env;
jbe@0 85 ssize_t result;
jbe@0 86 VALUE retval;
jbe@0 87 str = StringValue(str_param);
jbe@0 88 options = NUM2INT(options_param) & ~UTF8PROC_NULLTERM;
jbe@0 89 env_obj = Data_Make_Struct(rb_cObject, utf8proc_ruby_mapenv_t, NULL,
jbe@0 90 utf8proc_ruby_mapenv_free, env);
jbe@0 91 result = utf8proc_decompose(RSTRING(str)->ptr, RSTRING(str)->len,
jbe@0 92 NULL, 0, options);
jbe@2 93 if (result < 0) {
jbe@2 94 utf8proc_ruby_map_error(result);
jbe@2 95 return Qnil; // needed to prevent problems with optimization
jbe@2 96 }
jbe@0 97 env->buffer = ALLOC_N(int32_t, result+1);
jbe@0 98 result = utf8proc_decompose(RSTRING(str)->ptr, RSTRING(str)->len,
jbe@0 99 env->buffer, result, options);
jbe@0 100 if (result < 0) {
jbe@0 101 free(env->buffer);
jbe@0 102 env->buffer = 0;
jbe@1 103 utf8proc_ruby_map_error(result);
jbe@2 104 return Qnil; // needed to prevent problems with optimization
jbe@0 105 }
jbe@0 106 result = utf8proc_reencode(env->buffer, result, options);
jbe@0 107 if (result < 0) {
jbe@0 108 free(env->buffer);
jbe@0 109 env->buffer = 0;
jbe@1 110 utf8proc_ruby_map_error(result);
jbe@2 111 return Qnil; // needed to prevent problems with optimization
jbe@0 112 }
jbe@0 113 retval = rb_str_new((char *)env->buffer, result);
jbe@0 114 free(env->buffer);
jbe@0 115 env->buffer = 0;
jbe@0 116 return retval;
jbe@0 117 }
jbe@0 118
jbe@0 119 static VALUE utf8proc_ruby_char(VALUE self, VALUE code_param) {
jbe@0 120 char buffer[4];
jbe@0 121 ssize_t result;
jbe@0 122 int uc;
jbe@0 123 uc = NUM2INT(code_param);
jbe@0 124 if (uc < 0 || ((uc & 0xFFFF) >= 0xFFFE) || (uc >= 0xD800 && uc < 0xE000) ||
jbe@0 125 (uc >= 0xFDD0 && uc < 0xFDF0))
jbe@0 126 rb_raise(rb_eArgError, "Invalid Unicode code point");
jbe@0 127 result = utf8proc_encode_char(uc, buffer);
jbe@0 128 return rb_str_new(buffer, result);
jbe@0 129 }
jbe@0 130
jbe@0 131 #define register_utf8proc_option(sym, field) \
jbe@0 132 rb_hash_aset(utf8proc_ruby_options, ID2SYM(rb_intern(sym)), INT2FIX(field))
jbe@0 133
jbe@0 134 void Init_utf8proc_native() {
jbe@0 135 utf8proc_ruby_module = rb_define_module("Utf8Proc");
jbe@0 136 rb_define_module_function(utf8proc_ruby_module, "utf8map",
jbe@0 137 utf8proc_ruby_map, 2);
jbe@0 138 rb_define_module_function(utf8proc_ruby_module, "utf8char",
jbe@0 139 utf8proc_ruby_char, 1);
jbe@0 140 utf8proc_ruby_eUnicodeError = rb_define_class_under(utf8proc_ruby_module,
jbe@0 141 "UnicodeError", rb_eStandardError);
jbe@0 142 utf8proc_ruby_eInvalidUtf8Error = rb_define_class_under(
jbe@0 143 utf8proc_ruby_module, "InvalidUtf8Error", utf8proc_ruby_eUnicodeError);
jbe@0 144 utf8proc_ruby_eCodeNotAssignedError = rb_define_class_under(
jbe@0 145 utf8proc_ruby_module, "CodeNotAssignedError",
jbe@0 146 utf8proc_ruby_eUnicodeError);
jbe@0 147 utf8proc_ruby_options = rb_hash_new();
jbe@2 148 register_utf8proc_option("stable", UTF8PROC_STABLE);
jbe@2 149 register_utf8proc_option("compat", UTF8PROC_COMPAT);
jbe@2 150 register_utf8proc_option("compose", UTF8PROC_COMPOSE);
jbe@2 151 register_utf8proc_option("decompose", UTF8PROC_DECOMPOSE);
jbe@2 152 register_utf8proc_option("ignore", UTF8PROC_IGNORE);
jbe@2 153 register_utf8proc_option("rejectna", UTF8PROC_REJECTNA);
jbe@2 154 register_utf8proc_option("nlf2ls", UTF8PROC_NLF2LS);
jbe@2 155 register_utf8proc_option("nlf2ps", UTF8PROC_NLF2PS);
jbe@2 156 register_utf8proc_option("nlf2lf", UTF8PROC_NLF2LF);
jbe@2 157 register_utf8proc_option("stripcc", UTF8PROC_STRIPCC);
jbe@2 158 register_utf8proc_option("casefold", UTF8PROC_CASEFOLD);
jbe@2 159 register_utf8proc_option("charbound", UTF8PROC_CHARBOUND);
jbe@0 160 OBJ_FREEZE(utf8proc_ruby_options);
jbe@0 161 rb_define_const(utf8proc_ruby_module, "Options", utf8proc_ruby_options);
jbe@0 162 }
jbe@0 163
jbe@0 164

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