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// © 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
/*
*******************************************************************************
*
* Copyright (C) 2003-2014, International Business Machines
* Corporation and others. All Rights Reserved.
*
*******************************************************************************
* file name: usprep.h
* encoding: UTF-8
* tab size: 8 (not used)
* indentation:4
*
* created on: 2003jul2
* created by: Ram Viswanadha
*/
#ifndef __USPREP_H__
#define __USPREP_H__
/**
* \file
* \brief C API: Implements the StringPrep algorithm.
*/
#include "unicode/utypes.h"
#if U_SHOW_CPLUSPLUS_API
#include "unicode/localpointer.h"
#endif // U_SHOW_CPLUSPLUS_API
/**
*
* StringPrep API implements the StingPrep framework as described by RFC 3454.
* StringPrep prepares Unicode strings for use in network protocols.
* Profiles of StingPrep are set of rules and data according to with the
* Unicode Strings are prepared. Each profiles contains tables which describe
* how a code point should be treated. The tables are broadly classified into
* <ul>
* <li> Unassigned Table: Contains code points that are unassigned
* in the Unicode Version supported by StringPrep. Currently
* RFC 3454 supports Unicode 3.2. </li>
* <li> Prohibited Table: Contains code points that are prohibited from
* the output of the StringPrep processing function. </li>
* <li> Mapping Table: Contains code points that are deleted from the output or case mapped. </li>
* </ul>
*
* The procedure for preparing Unicode strings:
* <ol>
* <li> Map: For each character in the input, check if it has a mapping
* and, if so, replace it with its mapping. </li>
* <li> Normalize: Possibly normalize the result of step 1 using Unicode
* normalization. </li>
* <li> Prohibit: Check for any characters that are not allowed in the
* output. If any are found, return an error.</li>
* <li> Check bidi: Possibly check for right-to-left characters, and if
* any are found, make sure that the whole string satisfies the
* requirements for bidirectional strings. If the string does not
* satisfy the requirements for bidirectional strings, return an
* error. </li>
* </ol>
* @author Ram Viswanadha
*/
#if !UCONFIG_NO_IDNA
#include "unicode/parseerr.h"
/**
* The StringPrep profile
* @stable ICU 2.8
*/
typedef struct UStringPrepProfile UStringPrepProfile;
/**
* Option to prohibit processing of unassigned code points in the input
*
* @see usprep_prepare
* @stable ICU 2.8
*/
#define USPREP_DEFAULT 0x0000
/**
* Option to allow processing of unassigned code points in the input
*
* @see usprep_prepare
* @stable ICU 2.8
*/
#define USPREP_ALLOW_UNASSIGNED 0x0001
/**
* enums for the standard stringprep profile types
* supported by usprep_openByType.
* @see usprep_openByType
* @stable ICU 4.2
*/
typedef enum UStringPrepProfileType {
/**
* RFC3491 Nameprep
* @stable ICU 4.2
*/
USPREP_RFC3491_NAMEPREP,
/**
* RFC3530 nfs4_cs_prep
* @stable ICU 4.2
*/
USPREP_RFC3530_NFS4_CS_PREP,
/**
* RFC3530 nfs4_cs_prep with case insensitive option
* @stable ICU 4.2
*/
USPREP_RFC3530_NFS4_CS_PREP_CI,
/**
* RFC3530 nfs4_cis_prep
* @stable ICU 4.2
*/
USPREP_RFC3530_NFS4_CIS_PREP,
/**
* RFC3530 nfs4_mixed_prep for prefix
* @stable ICU 4.2
*/
USPREP_RFC3530_NFS4_MIXED_PREP_PREFIX,
/**
* RFC3530 nfs4_mixed_prep for suffix
* @stable ICU 4.2
*/
USPREP_RFC3530_NFS4_MIXED_PREP_SUFFIX,
/**
* RFC3722 iSCSI
* @stable ICU 4.2
*/
USPREP_RFC3722_ISCSI,
/**
* RFC3920 XMPP Nodeprep
* @stable ICU 4.2
*/
USPREP_RFC3920_NODEPREP,
/**
* RFC3920 XMPP Resourceprep
* @stable ICU 4.2
*/
USPREP_RFC3920_RESOURCEPREP,
/**
* RFC4011 Policy MIB Stringprep
* @stable ICU 4.2
*/
USPREP_RFC4011_MIB,
/**
* RFC4013 SASLprep
* @stable ICU 4.2
*/
USPREP_RFC4013_SASLPREP,
/**
* RFC4505 trace
* @stable ICU 4.2
*/
USPREP_RFC4505_TRACE,
/**
* RFC4518 LDAP
* @stable ICU 4.2
*/
USPREP_RFC4518_LDAP,
/**
* RFC4518 LDAP for case ignore, numeric and stored prefix
* matching rules
* @stable ICU 4.2
*/
USPREP_RFC4518_LDAP_CI
} UStringPrepProfileType;
/**
* Creates a StringPrep profile from the data file.
*
* @param path string containing the full path pointing to the directory
* where the profile reside followed by the package name
* e.g. "/usr/resource/my_app/profiles/mydata" on a Unix system.
* if NULL, ICU default data files will be used.
* @param fileName name of the profile file to be opened
* @param status ICU error code in/out parameter. Must not be NULL.
* Must fulfill U_SUCCESS before the function call.
* @return Pointer to UStringPrepProfile that is opened. Should be closed by
* calling usprep_close()
* @see usprep_close()
* @stable ICU 2.8
*/
U_CAPI UStringPrepProfile* U_EXPORT2
usprep_open(const char* path,
const char* fileName,
UErrorCode* status);
/**
* Creates a StringPrep profile for the specified profile type.
*
* @param type The profile type
* @param status ICU error code in/out parameter. Must not be NULL.
* Must fulfill U_SUCCESS before the function call.
* @return Pointer to UStringPrepProfile that is opened. Should be closed by
* calling usprep_close()
* @see usprep_close()
* @stable ICU 4.2
*/
U_CAPI UStringPrepProfile* U_EXPORT2
usprep_openByType(UStringPrepProfileType type,
UErrorCode* status);
/**
* Closes the profile
* @param profile The profile to close
* @stable ICU 2.8
*/
U_CAPI void U_EXPORT2
usprep_close(UStringPrepProfile* profile);
#if U_SHOW_CPLUSPLUS_API
U_NAMESPACE_BEGIN
/**
* \class LocalUStringPrepProfilePointer
* "Smart pointer" class, closes a UStringPrepProfile via usprep_close().
* For most methods see the LocalPointerBase base class.
*
* @see LocalPointerBase
* @see LocalPointer
* @stable ICU 4.4
*/
U_DEFINE_LOCAL_OPEN_POINTER(LocalUStringPrepProfilePointer, UStringPrepProfile, usprep_close);
U_NAMESPACE_END
#endif
/**
* Prepare the input buffer for use in applications with the given profile. This operation maps, normalizes(NFKC),
* checks for prohibited and BiDi characters in the order defined by RFC 3454
* depending on the options specified in the profile.
*
* @param prep The profile to use
* @param src Pointer to UChar buffer containing the string to prepare
* @param srcLength Number of characters in the source string
* @param dest Pointer to the destination buffer to receive the output
* @param destCapacity The capacity of destination array
* @param options A bit set of options:
*
* - USPREP_DEFAULT Prohibit processing of unassigned code points in the input
*
* - USPREP_ALLOW_UNASSIGNED Treat the unassigned code points are in the input
* as normal Unicode code points.
*
* @param parseError Pointer to UParseError struct to receive information on position
* of error if an error is encountered. Can be NULL.
* @param status ICU in/out error code parameter.
* U_INVALID_CHAR_FOUND if src contains
* unmatched single surrogates.
* U_INDEX_OUTOFBOUNDS_ERROR if src contains
* too many code points.
* U_BUFFER_OVERFLOW_ERROR if destCapacity is not enough
* @return The number of UChars in the destination buffer
* @stable ICU 2.8
*/
U_CAPI int32_t U_EXPORT2
usprep_prepare( const UStringPrepProfile* prep,
const UChar* src, int32_t srcLength,
UChar* dest, int32_t destCapacity,
int32_t options,
UParseError* parseError,
UErrorCode* status );
#endif /* #if !UCONFIG_NO_IDNA */
#endif
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