[279] | 1 | /**********************************************************************
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| 2 | regerror.c - Onigmo (Oniguruma-mod) (regular expression library)
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| 3 | **********************************************************************/
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| 4 | /*-
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| 5 | * Copyright (c) 2002-2007 K.Kosako <sndgk393 AT ybb DOT ne DOT jp>
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[331] | 6 | * Copyright (c) 2011-2016 K.Takata <kentkt AT csc DOT jp>
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[279] | 7 | * All rights reserved.
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| 8 | *
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| 9 | * Redistribution and use in source and binary forms, with or without
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| 10 | * modification, are permitted provided that the following conditions
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| 11 | * are met:
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| 12 | * 1. Redistributions of source code must retain the above copyright
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| 13 | * notice, this list of conditions and the following disclaimer.
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| 14 | * 2. Redistributions in binary form must reproduce the above copyright
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| 15 | * notice, this list of conditions and the following disclaimer in the
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| 16 | * documentation and/or other materials provided with the distribution.
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| 17 | *
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| 18 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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| 19 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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| 20 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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| 21 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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| 22 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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| 23 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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| 24 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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| 25 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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| 26 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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| 27 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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| 28 | * SUCH DAMAGE.
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| 29 | */
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| 30 |
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| 31 | #include "regint.h"
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| 32 | #include <stdio.h> /* for vsnprintf() */
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| 33 |
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| 34 | #include <stdarg.h>
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| 35 |
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| 36 | extern UChar*
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| 37 | onig_error_code_to_format(OnigPosition code)
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| 38 | {
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| 39 | const char *p;
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| 40 |
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| 41 | if (code >= 0) return (UChar* )0;
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| 42 |
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| 43 | switch (code) {
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| 44 | case ONIG_MISMATCH:
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| 45 | p = "mismatch"; break;
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| 46 | case ONIG_NO_SUPPORT_CONFIG:
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| 47 | p = "no support in this configuration"; break;
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| 48 | case ONIGERR_MEMORY:
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| 49 | p = "failed to allocate memory"; break;
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| 50 | case ONIGERR_TYPE_BUG:
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| 51 | p = "undefined type (bug)"; break;
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| 52 | case ONIGERR_PARSER_BUG:
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| 53 | p = "internal parser error (bug)"; break;
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| 54 | case ONIGERR_STACK_BUG:
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| 55 | p = "stack error (bug)"; break;
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| 56 | case ONIGERR_UNDEFINED_BYTECODE:
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| 57 | p = "undefined bytecode (bug)"; break;
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| 58 | case ONIGERR_UNEXPECTED_BYTECODE:
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| 59 | p = "unexpected bytecode (bug)"; break;
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| 60 | case ONIGERR_MATCH_STACK_LIMIT_OVER:
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| 61 | p = "match-stack limit over"; break;
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[331] | 62 | case ONIGERR_PARSE_DEPTH_LIMIT_OVER:
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| 63 | p = "parse depth limit over"; break;
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[279] | 64 | case ONIGERR_DEFAULT_ENCODING_IS_NOT_SET:
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| 65 | p = "default multibyte-encoding is not set"; break;
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| 66 | case ONIGERR_SPECIFIED_ENCODING_CANT_CONVERT_TO_WIDE_CHAR:
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| 67 | p = "can't convert to wide-char on specified multibyte-encoding"; break;
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| 68 | case ONIGERR_INVALID_ARGUMENT:
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| 69 | p = "invalid argument"; break;
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| 70 | case ONIGERR_END_PATTERN_AT_LEFT_BRACE:
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| 71 | p = "end pattern at left brace"; break;
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| 72 | case ONIGERR_END_PATTERN_AT_LEFT_BRACKET:
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| 73 | p = "end pattern at left bracket"; break;
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| 74 | case ONIGERR_EMPTY_CHAR_CLASS:
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| 75 | p = "empty char-class"; break;
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| 76 | case ONIGERR_PREMATURE_END_OF_CHAR_CLASS:
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| 77 | p = "premature end of char-class"; break;
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| 78 | case ONIGERR_END_PATTERN_AT_ESCAPE:
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| 79 | p = "end pattern at escape"; break;
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| 80 | case ONIGERR_END_PATTERN_AT_META:
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| 81 | p = "end pattern at meta"; break;
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| 82 | case ONIGERR_END_PATTERN_AT_CONTROL:
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| 83 | p = "end pattern at control"; break;
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| 84 | case ONIGERR_META_CODE_SYNTAX:
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| 85 | p = "invalid meta-code syntax"; break;
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| 86 | case ONIGERR_CONTROL_CODE_SYNTAX:
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| 87 | p = "invalid control-code syntax"; break;
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| 88 | case ONIGERR_CHAR_CLASS_VALUE_AT_END_OF_RANGE:
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| 89 | p = "char-class value at end of range"; break;
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| 90 | case ONIGERR_CHAR_CLASS_VALUE_AT_START_OF_RANGE:
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| 91 | p = "char-class value at start of range"; break;
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| 92 | case ONIGERR_UNMATCHED_RANGE_SPECIFIER_IN_CHAR_CLASS:
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| 93 | p = "unmatched range specifier in char-class"; break;
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| 94 | case ONIGERR_TARGET_OF_REPEAT_OPERATOR_NOT_SPECIFIED:
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| 95 | p = "target of repeat operator is not specified"; break;
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| 96 | case ONIGERR_TARGET_OF_REPEAT_OPERATOR_INVALID:
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| 97 | p = "target of repeat operator is invalid"; break;
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| 98 | case ONIGERR_NESTED_REPEAT_OPERATOR:
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| 99 | p = "nested repeat operator"; break;
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| 100 | case ONIGERR_UNMATCHED_CLOSE_PARENTHESIS:
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| 101 | p = "unmatched close parenthesis"; break;
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| 102 | case ONIGERR_END_PATTERN_WITH_UNMATCHED_PARENTHESIS:
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| 103 | p = "end pattern with unmatched parenthesis"; break;
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| 104 | case ONIGERR_END_PATTERN_IN_GROUP:
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| 105 | p = "end pattern in group"; break;
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| 106 | case ONIGERR_UNDEFINED_GROUP_OPTION:
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| 107 | p = "undefined group option"; break;
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| 108 | case ONIGERR_INVALID_POSIX_BRACKET_TYPE:
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| 109 | p = "invalid POSIX bracket type"; break;
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| 110 | case ONIGERR_INVALID_LOOK_BEHIND_PATTERN:
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| 111 | p = "invalid pattern in look-behind"; break;
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| 112 | case ONIGERR_INVALID_REPEAT_RANGE_PATTERN:
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| 113 | p = "invalid repeat range {lower,upper}"; break;
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| 114 | case ONIGERR_INVALID_CONDITION_PATTERN:
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| 115 | p = "invalid conditional pattern"; break;
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| 116 | case ONIGERR_TOO_BIG_NUMBER:
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| 117 | p = "too big number"; break;
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| 118 | case ONIGERR_TOO_BIG_NUMBER_FOR_REPEAT_RANGE:
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| 119 | p = "too big number for repeat range"; break;
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| 120 | case ONIGERR_UPPER_SMALLER_THAN_LOWER_IN_REPEAT_RANGE:
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| 121 | p = "upper is smaller than lower in repeat range"; break;
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| 122 | case ONIGERR_EMPTY_RANGE_IN_CHAR_CLASS:
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| 123 | p = "empty range in char class"; break;
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| 124 | case ONIGERR_MISMATCH_CODE_LENGTH_IN_CLASS_RANGE:
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| 125 | p = "mismatch multibyte code length in char-class range"; break;
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| 126 | case ONIGERR_TOO_MANY_MULTI_BYTE_RANGES:
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| 127 | p = "too many multibyte code ranges are specified"; break;
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| 128 | case ONIGERR_TOO_SHORT_MULTI_BYTE_STRING:
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| 129 | p = "too short multibyte code string"; break;
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| 130 | case ONIGERR_TOO_BIG_BACKREF_NUMBER:
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| 131 | p = "too big backref number"; break;
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| 132 | case ONIGERR_INVALID_BACKREF:
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| 133 | #ifdef USE_NAMED_GROUP
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| 134 | p = "invalid backref number/name"; break;
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| 135 | #else
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| 136 | p = "invalid backref number"; break;
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| 137 | #endif
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| 138 | case ONIGERR_NUMBERED_BACKREF_OR_CALL_NOT_ALLOWED:
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| 139 | p = "numbered backref/call is not allowed. (use name)"; break;
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| 140 | case ONIGERR_TOO_SHORT_DIGITS:
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| 141 | p = "too short digits"; break;
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| 142 | case ONIGERR_TOO_LONG_WIDE_CHAR_VALUE:
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| 143 | p = "too long wide-char value"; break;
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| 144 | case ONIGERR_EMPTY_GROUP_NAME:
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| 145 | p = "group name is empty"; break;
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| 146 | case ONIGERR_INVALID_GROUP_NAME:
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| 147 | p = "invalid group name <%n>"; break;
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| 148 | case ONIGERR_INVALID_CHAR_IN_GROUP_NAME:
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| 149 | #ifdef USE_NAMED_GROUP
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| 150 | p = "invalid char in group name <%n>"; break;
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| 151 | #else
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| 152 | p = "invalid char in group number <%n>"; break;
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| 153 | #endif
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| 154 | case ONIGERR_UNDEFINED_NAME_REFERENCE:
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| 155 | p = "undefined name <%n> reference"; break;
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| 156 | case ONIGERR_UNDEFINED_GROUP_REFERENCE:
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| 157 | p = "undefined group <%n> reference"; break;
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| 158 | case ONIGERR_MULTIPLEX_DEFINED_NAME:
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| 159 | p = "multiplex defined name <%n>"; break;
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| 160 | case ONIGERR_MULTIPLEX_DEFINITION_NAME_CALL:
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| 161 | p = "multiplex definition name <%n> call"; break;
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| 162 | case ONIGERR_NEVER_ENDING_RECURSION:
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| 163 | p = "never ending recursion"; break;
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| 164 | case ONIGERR_GROUP_NUMBER_OVER_FOR_CAPTURE_HISTORY:
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| 165 | p = "group number is too big for capture history"; break;
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| 166 | case ONIGERR_INVALID_CHAR_PROPERTY_NAME:
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| 167 | p = "invalid character property name {%n}"; break;
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| 168 | case ONIGERR_TOO_MANY_CAPTURE_GROUPS:
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| 169 | p = "too many capture groups are specified"; break;
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| 170 | case ONIGERR_INVALID_CODE_POINT_VALUE:
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| 171 | p = "invalid code point value"; break;
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| 172 | case ONIGERR_TOO_BIG_WIDE_CHAR_VALUE:
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| 173 | p = "too big wide-char value"; break;
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| 174 | case ONIGERR_NOT_SUPPORTED_ENCODING_COMBINATION:
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| 175 | p = "not supported encoding combination"; break;
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| 176 | case ONIGERR_INVALID_COMBINATION_OF_OPTIONS:
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| 177 | p = "invalid combination of options"; break;
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| 178 |
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| 179 | default:
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| 180 | p = "undefined error code"; break;
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| 181 | }
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| 182 |
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| 183 | return (UChar* )p;
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| 184 | }
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| 185 |
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| 186 | static void sprint_byte(char* s, unsigned int v)
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| 187 | {
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[331] | 188 | xsnprintf(s, 3, "%02x", (v & 0377));
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[279] | 189 | }
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| 190 |
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| 191 | static void sprint_byte_with_x(char* s, unsigned int v)
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| 192 | {
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[331] | 193 | xsnprintf(s, 5, "\\x%02x", (v & 0377));
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[279] | 194 | }
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| 195 |
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| 196 | static int to_ascii(OnigEncoding enc, UChar *s, UChar *end,
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| 197 | UChar buf[], int buf_size, int *is_over)
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| 198 | {
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| 199 | int len;
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| 200 | UChar *p;
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| 201 | OnigCodePoint code;
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| 202 |
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| 203 | if (ONIGENC_MBC_MINLEN(enc) > 1) {
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| 204 | p = s;
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| 205 | len = 0;
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| 206 | while (p < end) {
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| 207 | code = ONIGENC_MBC_TO_CODE(enc, p, end);
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| 208 | if (code >= 0x80) {
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| 209 | if (code > 0xffff && len + 10 <= buf_size) {
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| 210 | sprint_byte_with_x((char*)(&(buf[len])), (unsigned int)(code >> 24));
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| 211 | sprint_byte((char*)(&(buf[len+4])), (unsigned int)(code >> 16));
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| 212 | sprint_byte((char*)(&(buf[len+6])), (unsigned int)(code >> 8));
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| 213 | sprint_byte((char*)(&(buf[len+8])), (unsigned int)code);
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| 214 | len += 10;
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| 215 | }
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| 216 | else if (len + 6 <= buf_size) {
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| 217 | sprint_byte_with_x((char*)(&(buf[len])), (unsigned int)(code >> 8));
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| 218 | sprint_byte((char*)(&(buf[len+4])), (unsigned int)code);
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| 219 | len += 6;
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| 220 | }
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| 221 | else {
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| 222 | break;
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| 223 | }
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| 224 | }
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| 225 | else {
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| 226 | buf[len++] = (UChar )code;
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| 227 | }
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| 228 |
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[331] | 229 | p += enclen(enc, p, end);
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[279] | 230 | if (len >= buf_size) break;
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| 231 | }
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| 232 |
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| 233 | *is_over = ((p < end) ? 1 : 0);
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| 234 | }
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| 235 | else {
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| 236 | len = (int )MIN((end - s), buf_size);
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| 237 | xmemcpy(buf, s, (size_t )len);
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| 238 | *is_over = ((buf_size < (end - s)) ? 1 : 0);
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| 239 | }
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| 240 |
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| 241 | return len;
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| 242 | }
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| 243 |
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| 244 |
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| 245 | /* for ONIG_MAX_ERROR_MESSAGE_LEN */
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| 246 | #define MAX_ERROR_PAR_LEN 30
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| 247 |
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| 248 | extern int
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| 249 | onig_error_code_to_str(UChar* s, OnigPosition code, ...)
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| 250 | {
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| 251 | UChar *p, *q;
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| 252 | OnigErrorInfo* einfo;
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| 253 | size_t len;
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| 254 | int is_over;
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| 255 | UChar parbuf[MAX_ERROR_PAR_LEN];
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| 256 | va_list vargs;
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| 257 |
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[331] | 258 | va_start(vargs, code);
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[279] | 259 |
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| 260 | switch (code) {
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| 261 | case ONIGERR_UNDEFINED_NAME_REFERENCE:
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| 262 | case ONIGERR_UNDEFINED_GROUP_REFERENCE:
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| 263 | case ONIGERR_MULTIPLEX_DEFINED_NAME:
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| 264 | case ONIGERR_MULTIPLEX_DEFINITION_NAME_CALL:
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| 265 | case ONIGERR_INVALID_GROUP_NAME:
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| 266 | case ONIGERR_INVALID_CHAR_IN_GROUP_NAME:
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| 267 | case ONIGERR_INVALID_CHAR_PROPERTY_NAME:
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| 268 | einfo = va_arg(vargs, OnigErrorInfo*);
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| 269 | len = to_ascii(einfo->enc, einfo->par, einfo->par_end,
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| 270 | parbuf, MAX_ERROR_PAR_LEN - 3, &is_over);
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| 271 | q = onig_error_code_to_format(code);
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| 272 | p = s;
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| 273 | while (*q != '\0') {
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| 274 | if (*q == '%') {
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| 275 | q++;
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| 276 | if (*q == 'n') { /* '%n': name */
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| 277 | xmemcpy(p, parbuf, len);
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| 278 | p += len;
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| 279 | if (is_over != 0) {
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| 280 | xmemcpy(p, "...", 3);
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| 281 | p += 3;
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| 282 | }
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| 283 | q++;
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| 284 | }
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| 285 | else
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| 286 | goto normal_char;
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| 287 | }
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| 288 | else {
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| 289 | normal_char:
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| 290 | *p++ = *q++;
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| 291 | }
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| 292 | }
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| 293 | *p = '\0';
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| 294 | len = p - s;
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| 295 | break;
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| 296 |
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| 297 | default:
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| 298 | q = onig_error_code_to_format(code);
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| 299 | if (q) {
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| 300 | len = onigenc_str_bytelen_null(ONIG_ENCODING_ASCII, q);
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| 301 | xmemcpy(s, q, len);
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| 302 | } else {
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| 303 | len = 0;
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| 304 | }
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| 305 | s[len] = '\0';
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| 306 | break;
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| 307 | }
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| 308 |
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| 309 | va_end(vargs);
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| 310 | return (int )len;
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| 311 | }
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| 312 |
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| 313 | void
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[331] | 314 | onig_vsnprintf_with_pattern(UChar buf[], int bufsize, OnigEncoding enc,
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| 315 | UChar* pat, UChar* pat_end, const UChar *fmt, va_list args)
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[279] | 316 | {
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| 317 | size_t need;
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| 318 | int n, len;
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| 319 | UChar *p, *s, *bp;
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| 320 | UChar bs[6];
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| 321 |
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| 322 | n = xvsnprintf((char* )buf, bufsize, (const char* )fmt, args);
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| 323 |
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| 324 | need = (pat_end - pat) * 4 + 4;
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| 325 |
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| 326 | if (n + need < (size_t )bufsize) {
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[331] | 327 | static const char sep[] = ": /";
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| 328 | memcpy((char* )buf + n, sep, sizeof(sep));
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[279] | 329 | s = buf + onigenc_str_bytelen_null(ONIG_ENCODING_ASCII, buf);
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| 330 |
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| 331 | p = pat;
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| 332 | while (p < pat_end) {
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[331] | 333 | if (ONIGENC_IS_MBC_HEAD(enc, p, pat_end)) {
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| 334 | len = enclen(enc, p, pat_end);
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[279] | 335 | if (ONIGENC_MBC_MINLEN(enc) == 1) {
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| 336 | while (len-- > 0) *s++ = *p++;
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| 337 | }
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[331] | 338 | else { /* for UTF16/32 */
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[279] | 339 | int blen;
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| 340 |
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| 341 | while (len-- > 0) {
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| 342 | sprint_byte_with_x((char* )bs, (unsigned int )(*p++));
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| 343 | blen = onigenc_str_bytelen_null(ONIG_ENCODING_ASCII, bs);
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| 344 | bp = bs;
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| 345 | while (blen-- > 0) *s++ = *bp++;
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| 346 | }
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| 347 | }
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| 348 | }
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[331] | 349 | else if (*p == '\\') {
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| 350 | *s++ = *p++;
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| 351 | len = enclen(enc, p, pat_end);
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| 352 | while (len-- > 0) *s++ = *p++;
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| 353 | }
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| 354 | else if (*p == '/') {
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| 355 | *s++ = (unsigned char )'\\';
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| 356 | *s++ = *p++;
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| 357 | }
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[279] | 358 | else if (!ONIGENC_IS_CODE_PRINT(enc, *p) &&
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| 359 | !ONIGENC_IS_CODE_SPACE(enc, *p)) {
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| 360 | sprint_byte_with_x((char* )bs, (unsigned int )(*p++));
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| 361 | len = onigenc_str_bytelen_null(ONIG_ENCODING_ASCII, bs);
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| 362 | bp = bs;
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| 363 | while (len-- > 0) *s++ = *bp++;
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| 364 | }
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| 365 | else {
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| 366 | *s++ = *p++;
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| 367 | }
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| 368 | }
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| 369 |
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| 370 | *s++ = '/';
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| 371 | *s = '\0';
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| 372 | }
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| 373 | }
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[331] | 374 |
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| 375 | #if 0 /* unused */
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| 376 | void
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| 377 | onig_snprintf_with_pattern(UChar buf[], int bufsize, OnigEncoding enc,
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| 378 | UChar* pat, UChar* pat_end, const UChar *fmt, ...)
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| 379 | {
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| 380 | va_list args;
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| 381 | va_start(args, fmt);
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| 382 | onig_vsnprintf_with_pattern(buf, bufsize, enc,
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| 383 | pat, pat_end, fmt, args);
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| 384 | va_end(args);
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| 385 | }
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| 386 | #endif
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