FM / unicode

/usr/include/unicode

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alphaindex.h	27118	0644	edit dl rm
appendable.h	8694	0644	edit dl rm
basictz.h	9491	0644	edit dl rm
brkiter.h	28464	0644	edit dl rm
bytestream.h	11037	0644	edit dl rm
bytestrie.h	21266	0644	edit dl rm
bytestriebuilder.h	7248	0644	edit dl rm
calendar.h	108278	0644	edit dl rm
caniter.h	7611	0644	edit dl rm
casemap.h	25933	0644	edit dl rm
char16ptr.h	7393	0644	edit dl rm
chariter.h	24632	0644	edit dl rm
choicfmt.h	24482	0644	edit dl rm
coleitr.h	14094	0644	edit dl rm
coll.h	57581	0644	edit dl rm
compactdecimalformat.h	7047	0644	edit dl rm
curramt.h	3851	0644	edit dl rm
currpinf.h	7473	0644	edit dl rm
currunit.h	4094	0644	edit dl rm
datefmt.h	41641	0644	edit dl rm
dbbi.h	1223	0644	edit dl rm
dcfmtsym.h	20897	0644	edit dl rm
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docmain.h	7142	0644	edit dl rm
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dtintrv.h	3930	0644	edit dl rm
dtitvfmt.h	47634	0644	edit dl rm
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dtrule.h	8888	0644	edit dl rm
edits.h	21237	0644	edit dl rm
enumset.h	2130	0644	edit dl rm
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format.h	12802	0644	edit dl rm
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fpositer.h	3109	0644	edit dl rm
gender.h	3408	0644	edit dl rm
gregocal.h	32472	0644	edit dl rm
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idna.h	13000	0644	edit dl rm
listformatter.h	9493	0644	edit dl rm
localebuilder.h	11502	0644	edit dl rm
localematcher.h	25147	0644	edit dl rm
localpointer.h	19829	0644	edit dl rm
locdspnm.h	7292	0644	edit dl rm
locid.h	48821	0644	edit dl rm
measfmt.h	11603	0644	edit dl rm
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measure.h	4423	0644	edit dl rm
messagepattern.h	34521	0644	edit dl rm
msgfmt.h	45168	0644	edit dl rm
normalizer2.h	34851	0644	edit dl rm
normlzr.h	31682	0644	edit dl rm
nounit.h	2754	0644	edit dl rm
numberformatter.h	86276	0644	edit dl rm
numberrangeformatter.h	28617	0644	edit dl rm
numfmt.h	50950	0644	edit dl rm
numsys.h	7500	0644	edit dl rm
parseerr.h	3155	0644	edit dl rm
parsepos.h	5692	0644	edit dl rm
platform.h	28751	0644	edit dl rm
plurfmt.h	25800	0644	edit dl rm
plurrule.h	18780	0644	edit dl rm
ptypes.h	3577	0644	edit dl rm
putil.h	6487	0644	edit dl rm
rbbi.h	27218	0644	edit dl rm
rbnf.h	49899	0644	edit dl rm
rbtz.h	15979	0644	edit dl rm
regex.h	86367	0644	edit dl rm
region.h	9404	0644	edit dl rm
reldatefmt.h	22801	0644	edit dl rm
rep.h	9599	0644	edit dl rm
resbund.h	18503	0644	edit dl rm
schriter.h	6475	0644	edit dl rm
scientificnumberformatter.h	6553	0644	edit dl rm
search.h	22757	0644	edit dl rm
selfmt.h	14643	0644	edit dl rm
simpleformatter.h	12888	0644	edit dl rm
simpletz.h	46527	0644	edit dl rm
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sortkey.h	11444	0644	edit dl rm
std_string.h	1076	0644	edit dl rm
strenum.h	10158	0644	edit dl rm
stringoptions.h	5926	0644	edit dl rm
stringpiece.h	10597	0644	edit dl rm
stringtriebuilder.h	15698	0644	edit dl rm
stsearch.h	21810	0644	edit dl rm
symtable.h	4374	0644	edit dl rm
tblcoll.h	37489	0644	edit dl rm
timezone.h	42005	0644	edit dl rm
tmunit.h	3461	0644	edit dl rm
tmutamt.h	5015	0644	edit dl rm
tmutfmt.h	8042	0644	edit dl rm
translit.h	67400	0644	edit dl rm
tzfmt.h	43916	0644	edit dl rm
tznames.h	17252	0644	edit dl rm
tzrule.h	36215	0644	edit dl rm
tztrans.h	6271	0644	edit dl rm
ubidi.h	91711	0644	edit dl rm
ubiditransform.h	12950	0644	edit dl rm
ubrk.h	24547	0644	edit dl rm
ucal.h	58265	0644	edit dl rm
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ucat.h	5484	0644	edit dl rm
uchar.h	144630	0644	edit dl rm
ucharstrie.h	23120	0644	edit dl rm
ucharstriebuilder.h	7378	0644	edit dl rm
uchriter.h	13521	0644	edit dl rm
uclean.h	11474	0644	edit dl rm
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ucnv_err.h	21492	0644	edit dl rm
ucol.h	62939	0644	edit dl rm
ucoleitr.h	9684	0644	edit dl rm
uconfig.h	12356	0644	edit dl rm
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ucptrie.h	23002	0644	edit dl rm
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udat.h	62851	0644	edit dl rm
udata.h	15930	0644	edit dl rm
udateintervalformat.h	10995	0644	edit dl rm
udatpg.h	27447	0644	edit dl rm
udisplaycontext.h	6029	0644	edit dl rm
uenum.h	7970	0644	edit dl rm
ufieldpositer.h	4461	0644	edit dl rm
uformattable.h	11198	0644	edit dl rm
uformattedvalue.h	12413	0644	edit dl rm
ugender.h	2052	0644	edit dl rm
uidna.h	34169	0644	edit dl rm
uiter.h	23319	0644	edit dl rm
uldnames.h	10702	0644	edit dl rm
ulistformatter.h	11086	0644	edit dl rm
uloc.h	54432	0644	edit dl rm
ulocdata.h	11533	0644	edit dl rm
umachine.h	14884	0644	edit dl rm
umisc.h	1365	0644	edit dl rm
umsg.h	24812	0644	edit dl rm
umutablecptrie.h	8435	0644	edit dl rm
unifilt.h	4055	0644	edit dl rm
unifunct.h	4141	0644	edit dl rm
unimatch.h	6244	0644	edit dl rm
unirepl.h	3464	0644	edit dl rm
uniset.h	66459	0644	edit dl rm
unistr.h	174523	0644	edit dl rm
unorm.h	21015	0644	edit dl rm
unorm2.h	25254	0644	edit dl rm
unum.h	54743	0644	edit dl rm
unumberformatter.h	25824	0644	edit dl rm
unumsys.h	7387	0644	edit dl rm
uobject.h	10936	0644	edit dl rm
upluralrules.h	8013	0644	edit dl rm
uregex.h	73784	0644	edit dl rm
uregion.h	10073	0644	edit dl rm
ureldatefmt.h	17409	0644	edit dl rm
urename.h	134449	0644	edit dl rm
urep.h	5507	0644	edit dl rm
ures.h	37415	0644	edit dl rm
uscript.h	27867	0644	edit dl rm
usearch.h	39039	0644	edit dl rm
uset.h	40958	0644	edit dl rm
usetiter.h	9781	0644	edit dl rm
ushape.h	18432	0644	edit dl rm
uspoof.h	67480	0644	edit dl rm
usprep.h	8331	0644	edit dl rm
ustdio.h	39469	0644	edit dl rm
ustream.h	1934	0644	edit dl rm
ustring.h	74211	0644	edit dl rm
ustringtrie.h	3224	0644	edit dl rm
utext.h	59527	0644	edit dl rm
utf.h	8046	0644	edit dl rm
utf8.h	31700	0644	edit dl rm
utf16.h	23878	0644	edit dl rm
utf32.h	763	0644	edit dl rm
utf_old.h	46929	0644	edit dl rm
utmscale.h	14113	0644	edit dl rm
utrace.h	17706	0644	edit dl rm
utrans.h	26130	0644	edit dl rm
utypes.h	31481	0644	edit dl rm
uvernum.h	6832	0644	edit dl rm
uversion.h	6145	0644	edit dl rm
vtzone.h	20784	0644	edit dl rm

Edit: /usr/include/unicode/utrans.h (26130B)

// © 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
/*
*******************************************************************************
*   Copyright (C) 1997-2011,2014-2015 International Business Machines
*   Corporation and others.  All Rights Reserved.
*******************************************************************************
*   Date        Name        Description
*   06/21/00    aliu        Creation.
*******************************************************************************
*/

#ifndef UTRANS_H
#define UTRANS_H

#include "unicode/utypes.h"

#if !UCONFIG_NO_TRANSLITERATION

#include "unicode/localpointer.h"
#include "unicode/urep.h"
#include "unicode/parseerr.h"
#include "unicode/uenum.h"
#include "unicode/uset.h"

/********************************************************************
 * General Notes
 ********************************************************************
 */
/**
 * \file
 * \brief C API: Transliterator
 *
 * <h2> Transliteration </h2>
 * The data structures and functions described in this header provide
 * transliteration services. Transliteration services are implemented
 * as C++ classes. The comments and documentation in this header
 * assume the reader is familiar with the C++ headers translit.h and
 * associated documentation.
 *
 * A significant but incomplete subset of the C++ transliteration
 * services are available to C code through this header. In order to
 * access more complex transliteration services, refer to the C++
 * headers and documentation.
 *
 * There are two sets of functions for working with transliterator IDs:
 *
 * An old, deprecated set uses char * IDs, which works for true and pure
 * identifiers that these APIs were designed for,
 * for example "Cyrillic-Latin".
 * It does not work when the ID contains filters ("[:Script=Cyrl:]")
 * or even a complete set of rules because then the ID string contains more
 * than just "invariant" characters (see utypes.h).
 *
 * A new set of functions replaces the old ones and uses UChar * IDs,
 * paralleling the UnicodeString IDs in the C++ API. (New in ICU 2.8.)
 */

/********************************************************************
 * Data Structures
 ********************************************************************/

/**
 * An opaque transliterator for use in C.  Open with utrans_openxxx()
 * and close with utrans_close() when done.  Equivalent to the C++ class
 * Transliterator and its subclasses.
 * @see Transliterator
 * @stable ICU 2.0
 */
typedef void* UTransliterator;

/**
 * Direction constant indicating the direction in a transliterator,
 * e.g., the forward or reverse rules of a RuleBasedTransliterator.
 * Specified when a transliterator is opened.  An "A-B" transliterator
 * transliterates A to B when operating in the forward direction, and
 * B to A when operating in the reverse direction.
 * @stable ICU 2.0
 */
typedef enum UTransDirection {
    
    /**
     * UTRANS_FORWARD means from &lt;source&gt; to &lt;target&gt; for a
     * transliterator with ID &lt;source&gt;-&lt;target&gt;.  For a transliterator
     * opened using a rule, it means forward direction rules, e.g.,
     * "A > B".
     */
    UTRANS_FORWARD,

/**
 * UTRANS_REVERSE means from &lt;target&gt; to &lt;source&gt; for a
 * transliterator with ID &lt;source&gt;-&lt;target&gt;. For a transliterator
 * opened using a rule, it means reverse direction rules, e.g.,
 * "A < B".
 */
 UTRANS_REVERSE

} UTransDirection;

/**
 * Position structure for utrans_transIncremental() incremental
 * transliteration. This structure defines two substrings of the text
 * being transliterated. The first region, [contextStart,
 * contextLimit), defines what characters the transliterator will read
 * as context. The second region, [start, limit), defines what
 * characters will actually be transliterated. The second region
 * should be a subset of the first.
 *
 * After a transliteration operation, some of the indices in this
 * structure will be modified. See the field descriptions for
 * details.
 *
 * contextStart <= start <= limit <= contextLimit
 *
 * Note: All index values in this structure must be at code point
 * boundaries. That is, none of them may occur between two code units
 * of a surrogate pair. If any index does split a surrogate pair,
 * results are unspecified.
 *
 * @stable ICU 2.0
 */
typedef struct UTransPosition {

/**
     * Beginning index, inclusive, of the context to be considered for
     * a transliteration operation.  The transliterator will ignore
     * anything before this index.  INPUT/OUTPUT parameter: This parameter
     * is updated by a transliteration operation to reflect the maximum
     * amount of antecontext needed by a transliterator.
     * @stable ICU 2.4
     */
    int32_t contextStart;
    
    /**
     * Ending index, exclusive, of the context to be considered for a
     * transliteration operation.  The transliterator will ignore
     * anything at or after this index.  INPUT/OUTPUT parameter: This
     * parameter is updated to reflect changes in the length of the
     * text, but points to the same logical position in the text.
     * @stable ICU 2.4
     */
    int32_t contextLimit;
    
    /**
     * Beginning index, inclusive, of the text to be transliterated.
     * INPUT/OUTPUT parameter: This parameter is advanced past
     * characters that have already been transliterated by a
     * transliteration operation.
     * @stable ICU 2.4
     */
    int32_t start;
    
    /**
     * Ending index, exclusive, of the text to be transliterated.
     * INPUT/OUTPUT parameter: This parameter is updated to reflect
     * changes in the length of the text, but points to the same
     * logical position in the text.
     * @stable ICU 2.4
     */
    int32_t limit;

} UTransPosition;

/********************************************************************
 * General API
 ********************************************************************/

/**
 * Open a custom transliterator, given a custom rules string 
 * OR 
 * a system transliterator, given its ID.  
 * Any non-NULL result from this function should later be closed with
 * utrans_close().
 *
 * @param id a valid transliterator ID
 * @param idLength the length of the ID string, or -1 if NUL-terminated
 * @param dir the desired direction
 * @param rules the transliterator rules.  See the C++ header rbt.h for
 *              rules syntax. If NULL then a system transliterator matching
 *              the ID is returned.
 * @param rulesLength the length of the rules, or -1 if the rules
 *                    are NUL-terminated.
 * @param parseError a pointer to a UParseError struct to receive the details
 *                   of any parsing errors. This parameter may be NULL if no
 *                   parsing error details are desired.
 * @param pErrorCode a pointer to the UErrorCode
 * @return a transliterator pointer that may be passed to other
 *         utrans_xxx() functions, or NULL if the open call fails.
 * @stable ICU 2.8
 */
U_STABLE UTransliterator* U_EXPORT2
utrans_openU(const UChar *id,
             int32_t idLength,
             UTransDirection dir,
             const UChar *rules,
             int32_t rulesLength,
             UParseError *parseError,
             UErrorCode *pErrorCode);

/**
 * Open an inverse of an existing transliterator.  For this to work,
 * the inverse must be registered with the system.  For example, if
 * the Transliterator "A-B" is opened, and then its inverse is opened,
 * the result is the Transliterator "B-A", if such a transliterator is
 * registered with the system.  Otherwise the result is NULL and a
 * failing UErrorCode is set.  Any non-NULL result from this function
 * should later be closed with utrans_close().
 *
 * @param trans the transliterator to open the inverse of.
 * @param status a pointer to the UErrorCode
 * @return a pointer to a newly-opened transliterator that is the
 * inverse of trans, or NULL if the open call fails.
 * @stable ICU 2.0
 */
U_STABLE UTransliterator* U_EXPORT2 
utrans_openInverse(const UTransliterator* trans,
                   UErrorCode* status);

/**
 * Create a copy of a transliterator.  Any non-NULL result from this
 * function should later be closed with utrans_close().
 *
 * @param trans the transliterator to be copied.
 * @param status a pointer to the UErrorCode
 * @return a transliterator pointer that may be passed to other
 * utrans_xxx() functions, or NULL if the clone call fails.
 * @stable ICU 2.0
 */
U_STABLE UTransliterator* U_EXPORT2 
utrans_clone(const UTransliterator* trans,
             UErrorCode* status);

/**
 * Close a transliterator.  Any non-NULL pointer returned by
 * utrans_openXxx() or utrans_clone() should eventually be closed.
 * @param trans the transliterator to be closed.
 * @stable ICU 2.0
 */
U_STABLE void U_EXPORT2 
utrans_close(UTransliterator* trans);

#if U_SHOW_CPLUSPLUS_API

U_NAMESPACE_BEGIN

/**
 * \class LocalUTransliteratorPointer
 * "Smart pointer" class, closes a UTransliterator via utrans_close().
 * For most methods see the LocalPointerBase base class.
 *
 * @see LocalPointerBase
 * @see LocalPointer
 * @stable ICU 4.4
 */
U_DEFINE_LOCAL_OPEN_POINTER(LocalUTransliteratorPointer, UTransliterator, utrans_close);

U_NAMESPACE_END

#endif

/**
 * Return the programmatic identifier for this transliterator.
 * If this identifier is passed to utrans_openU(), it will open
 * a transliterator equivalent to this one, if the ID has been
 * registered.
 *
 * @param trans the transliterator to return the ID of.
 * @param resultLength pointer to an output variable receiving the length
 *        of the ID string; can be NULL
 * @return the NUL-terminated ID string. This pointer remains
 * valid until utrans_close() is called on this transliterator.
 *
 * @stable ICU 2.8
 */
U_STABLE const UChar * U_EXPORT2
utrans_getUnicodeID(const UTransliterator *trans,
                    int32_t *resultLength);

/**
 * Register an open transliterator with the system. When
 * utrans_open() is called with an ID string that is equal to that
 * returned by utrans_getID(adoptedTrans,...), then
 * utrans_clone(adoptedTrans,...) is returned.
 *
 * NOTE: After this call the system owns the adoptedTrans and will
 * close it. The user must not call utrans_close() on adoptedTrans.
 *
 * @param adoptedTrans a transliterator, typically the result of
 * utrans_openRules(), to be registered with the system.
 * @param status a pointer to the UErrorCode
 * @stable ICU 2.0
 */
U_STABLE void U_EXPORT2 
utrans_register(UTransliterator* adoptedTrans,
 UErrorCode* status);

/**
 * Unregister a transliterator from the system.  After this call the
 * system will no longer recognize the given ID when passed to
 * utrans_open(). If the ID is invalid then nothing is done.
 *
 * @param id an ID to unregister
 * @param idLength the length of id, or -1 if id is zero-terminated
 * @stable ICU 2.8
 */
U_STABLE void U_EXPORT2
utrans_unregisterID(const UChar* id, int32_t idLength);

/**
 * Set the filter used by a transliterator.  A filter can be used to
 * make the transliterator pass certain characters through untouched.
 * The filter is expressed using a UnicodeSet pattern.  If the
 * filterPattern is NULL or the empty string, then the transliterator
 * will be reset to use no filter.
 *
 * @param trans the transliterator
 * @param filterPattern a pattern string, in the form accepted by
 * UnicodeSet, specifying which characters to apply the
 * transliteration to.  May be NULL or the empty string to indicate no
 * filter.
 * @param filterPatternLen the length of filterPattern, or -1 if
 * filterPattern is zero-terminated
 * @param status a pointer to the UErrorCode
 * @see UnicodeSet
 * @stable ICU 2.0
 */
U_STABLE void U_EXPORT2 
utrans_setFilter(UTransliterator* trans,
                 const UChar* filterPattern,
                 int32_t filterPatternLen,
                 UErrorCode* status);

/**
 * Return the number of system transliterators.
 * It is recommended to use utrans_openIDs() instead.
 *
 * @return the number of system transliterators.
 * @stable ICU 2.0
 */
U_STABLE int32_t U_EXPORT2 
utrans_countAvailableIDs(void);

/**
 * Return a UEnumeration for the available transliterators.
 *
 * @param pErrorCode Pointer to the UErrorCode in/out parameter.
 * @return UEnumeration for the available transliterators.
 *         Close with uenum_close().
 *
 * @stable ICU 2.8
 */
U_STABLE UEnumeration * U_EXPORT2
utrans_openIDs(UErrorCode *pErrorCode);

/********************************************************************
 * Transliteration API
 ********************************************************************/

/**
 * Transliterate a segment of a UReplaceable string. The string is
 * passed in as a UReplaceable pointer rep and a UReplaceableCallbacks
 * function pointer struct repFunc. Functions in the repFunc struct
 * will be called in order to modify the rep string.
 *
 * @param trans the transliterator
 * @param rep a pointer to the string. This will be passed to the
 * repFunc functions.
 * @param repFunc a set of function pointers that will be used to
 * modify the string pointed to by rep.
 * @param start the beginning index, inclusive; <code>0 <= start <=
 * limit</code>.
 * @param limit pointer to the ending index, exclusive; <code>start <=
 * limit <= repFunc->length(rep)</code>. Upon return, *limit will
 * contain the new limit index. The text previously occupying
 * <code>[start, limit)</code> has been transliterated, possibly to a
 * string of a different length, at <code>[start,
 * </code>new-limit<code>)</code>, where new-limit
 * is the return value.
 * @param status a pointer to the UErrorCode
 * @stable ICU 2.0
 */
U_STABLE void U_EXPORT2 
utrans_trans(const UTransliterator* trans,
 UReplaceable* rep,
 const UReplaceableCallbacks* repFunc,
 int32_t start,
 int32_t* limit,
 UErrorCode* status);

/**
 * Transliterate the portion of the UReplaceable text buffer that can
 * be transliterated unambiguously. This method is typically called
 * after new text has been inserted, e.g. as a result of a keyboard
 * event. The transliterator will try to transliterate characters of
 * <code>rep</code> between <code>index.cursor</code> and
 * <code>index.limit</code>. Characters before
 * <code>index.cursor</code> will not be changed.
 *
 * Upon return, values in <code>index</code> will be updated.
 * <code>index.start</code> will be advanced to the first
 * character that future calls to this method will read.
 * <code>index.cursor</code> and <code>index.limit</code> will
 * be adjusted to delimit the range of text that future calls to
 * this method may change.
 *
 * Typical usage of this method begins with an initial call
 * with <code>index.start</code> and <code>index.limit</code>
 * set to indicate the portion of <code>text</code> to be
 * transliterated, and <code>index.cursor == index.start</code>.
 * Thereafter, <code>index</code> can be used without
 * modification in future calls, provided that all changes to
 * <code>text</code> are made via this method.
 *
 * This method assumes that future calls may be made that will
 * insert new text into the buffer. As a result, it only performs
 * unambiguous transliterations. After the last call to this method,
 * there may be untransliterated text that is waiting for more input
 * to resolve an ambiguity. In order to perform these pending
 * transliterations, clients should call utrans_trans() with a start
 * of index.start and a limit of index.end after the last call to this
 * method has been made.
 *
 * @param trans the transliterator
 * @param rep a pointer to the string. This will be passed to the
 * repFunc functions.
 * @param repFunc a set of function pointers that will be used to
 * modify the string pointed to by rep.
 * @param pos a struct containing the start and limit indices of the
 * text to be read and the text to be transliterated
 * @param status a pointer to the UErrorCode
 * @stable ICU 2.0
 */
U_STABLE void U_EXPORT2 
utrans_transIncremental(const UTransliterator* trans,
 UReplaceable* rep,
 const UReplaceableCallbacks* repFunc,
 UTransPosition* pos,
 UErrorCode* status);

/**
 * Transliterate a segment of a UChar* string. The string is passed
 * in in a UChar* buffer. The string is modified in place. If the
 * result is longer than textCapacity, it is truncated. The actual
 * length of the result is returned in *textLength, if textLength is
 * non-NULL. *textLength may be greater than textCapacity, but only
 * textCapacity UChars will be written to *text, including the zero
 * terminator.
 *
 * @param trans the transliterator
 * @param text a pointer to a buffer containing the text to be
 * transliterated on input and the result text on output.
 * @param textLength a pointer to the length of the string in text.
 * If the length is -1 then the string is assumed to be
 * zero-terminated. Upon return, the new length is stored in
 * *textLength. If textLength is NULL then the string is assumed to
 * be zero-terminated.
 * @param textCapacity the length of the text buffer
 * @param start the beginning index, inclusive; <code>0 <= start <=
 * limit</code>.
 * @param limit pointer to the ending index, exclusive; <code>start <=
 * limit <= repFunc->length(rep)</code>. Upon return, *limit will
 * contain the new limit index. The text previously occupying
 * <code>[start, limit)</code> has been transliterated, possibly to a
 * string of a different length, at <code>[start,
 * </code>new-limit<code>)</code>, where new-limit
 * is the return value.
 * @param status a pointer to the UErrorCode
 * @stable ICU 2.0
 */
U_STABLE void U_EXPORT2 
utrans_transUChars(const UTransliterator* trans,
 UChar* text,
 int32_t* textLength,
 int32_t textCapacity,
 int32_t start,
 int32_t* limit,
 UErrorCode* status);

/**
 * Transliterate the portion of the UChar* text buffer that can be
 * transliterated unambiguously.  See utrans_transIncremental().  The
 * string is passed in in a UChar* buffer.  The string is modified in
 * place.  If the result is longer than textCapacity, it is truncated.
 * The actual length of the result is returned in *textLength, if
 * textLength is non-NULL. *textLength may be greater than
 * textCapacity, but only textCapacity UChars will be written to
 * *text, including the zero terminator.  See utrans_transIncremental()
 * for usage details.
 *
 * @param trans the transliterator
 * @param text a pointer to a buffer containing the text to be
 * transliterated on input and the result text on output.
 * @param textLength a pointer to the length of the string in text.
 * If the length is -1 then the string is assumed to be
 * zero-terminated.  Upon return, the new length is stored in
 * *textLength.  If textLength is NULL then the string is assumed to
 * be zero-terminated.
 * @param textCapacity the length of the text buffer
 * @param pos a struct containing the start and limit indices of the
 * text to be read and the text to be transliterated
 * @param status a pointer to the UErrorCode
 * @see utrans_transIncremental
 * @stable ICU 2.0
 */
U_STABLE void U_EXPORT2 
utrans_transIncrementalUChars(const UTransliterator* trans,
                              UChar* text,
                              int32_t* textLength,
                              int32_t textCapacity,
                              UTransPosition* pos,
                              UErrorCode* status);

/**
 * Create a rule string that can be passed to utrans_openU to recreate this
 * transliterator.
 *
 * @param trans     The transliterator
 * @param escapeUnprintable if TRUE then convert unprintable characters to their
 *                  hex escape representations, \\uxxxx or \\Uxxxxxxxx.
 *                  Unprintable characters are those other than
 *                  U+000A, U+0020..U+007E.
 * @param result    A pointer to a buffer to receive the rules.
 * @param resultLength The maximum size of result.
 * @param status    A pointer to the UErrorCode. In case of error status, the
 *                  contents of result are undefined.
 * @return int32_t   The length of the rule string (may be greater than resultLength,
 *                  in which case an error is returned).
 * @stable ICU 53
 */
U_STABLE int32_t U_EXPORT2
utrans_toRules(     const UTransliterator* trans,
                    UBool escapeUnprintable,
                    UChar* result, int32_t resultLength,
                    UErrorCode* status);

/**
 * Returns the set of all characters that may be modified in the input text by
 * this UTransliterator, optionally ignoring the transliterator's current filter.
 * @param trans The transliterator.
 * @param ignoreFilter If FALSE, the returned set incorporates the
 * UTransliterator's current filter; if the filter is changed,
 * the return value of this function will change. If TRUE, the
 * returned set ignores the effect of the UTransliterator's
 * current filter.
 * @param fillIn Pointer to a USet object to receive the modifiable characters
 * set. Previous contents of fillIn are lost. If fillIn is
 * NULL, then a new USet is created and returned. The caller
 * owns the result and must dispose of it by calling uset_close.
 * @param status A pointer to the UErrorCode.
 * @return USet* Either fillIn, or if fillIn is NULL, a pointer to a
 * newly-allocated USet that the user must close. In case of
 * error, NULL is returned.
 * @stable ICU 53
 */
U_STABLE USet* U_EXPORT2
utrans_getSourceSet(const UTransliterator* trans,
 UBool ignoreFilter,
 USet* fillIn,
 UErrorCode* status);

/* deprecated API ----------------------------------------------------------- */

#ifndef U_HIDE_DEPRECATED_API

/* see utrans.h documentation for why these functions are deprecated */

/**
 * Deprecated, use utrans_openU() instead.
 * Open a custom transliterator, given a custom rules string 
 * OR 
 * a system transliterator, given its ID.  
 * Any non-NULL result from this function should later be closed with
 * utrans_close().
 *
 * @param id a valid ID, as returned by utrans_getAvailableID()
 * @param dir the desired direction
 * @param rules the transliterator rules.  See the C++ header rbt.h
 * for rules syntax. If NULL then a system transliterator matching 
 * the ID is returned.
 * @param rulesLength the length of the rules, or -1 if the rules
 * are zero-terminated.
 * @param parseError a pointer to a UParseError struct to receive the
 * details of any parsing errors. This parameter may be NULL if no
 * parsing error details are desired.
 * @param status a pointer to the UErrorCode
 * @return a transliterator pointer that may be passed to other
 * utrans_xxx() functions, or NULL if the open call fails.
 * @deprecated ICU 2.8 Use utrans_openU() instead, see utrans.h
 */
U_DEPRECATED UTransliterator* U_EXPORT2 
utrans_open(const char* id,
            UTransDirection dir,
            const UChar* rules,         /* may be Null */
            int32_t rulesLength,        /* -1 if null-terminated */ 
            UParseError* parseError,    /* may be Null */
            UErrorCode* status);

/**
 * Deprecated, use utrans_getUnicodeID() instead.
 * Return the programmatic identifier for this transliterator.
 * If this identifier is passed to utrans_open(), it will open
 * a transliterator equivalent to this one, if the ID has been
 * registered.
 * @param trans the transliterator to return the ID of.
 * @param buf the buffer in which to receive the ID.  This may be
 * NULL, in which case no characters are copied.
 * @param bufCapacity the capacity of the buffer.  Ignored if buf is
 * NULL.
 * @return the actual length of the ID, not including
 * zero-termination.  This may be greater than bufCapacity.
 * @deprecated ICU 2.8 Use utrans_getUnicodeID() instead, see utrans.h
 */
U_DEPRECATED int32_t U_EXPORT2 
utrans_getID(const UTransliterator* trans,
             char* buf,
             int32_t bufCapacity);

/**
 * Deprecated, use utrans_unregisterID() instead.
 * Unregister a transliterator from the system.  After this call the
 * system will no longer recognize the given ID when passed to
 * utrans_open().  If the id is invalid then nothing is done.
 *
 * @param id a zero-terminated ID
 * @deprecated ICU 2.8 Use utrans_unregisterID() instead, see utrans.h
 */
U_DEPRECATED void U_EXPORT2 
utrans_unregister(const char* id);

/**
 * Deprecated, use utrans_openIDs() instead.
 * Return the ID of the index-th system transliterator. The result
 * is placed in the given buffer. If the given buffer is too small,
 * the initial substring is copied to buf. The result in buf is
 * always zero-terminated.
 *
 * @param index the number of the transliterator to return. Must
 * satisfy 0 <= index < utrans_countAvailableIDs(). If index is out
 * of range then it is treated as if it were 0.
 * @param buf the buffer in which to receive the ID. This may be
 * NULL, in which case no characters are copied.
 * @param bufCapacity the capacity of the buffer. Ignored if buf is
 * NULL.
 * @return the actual length of the index-th ID, not including
 * zero-termination. This may be greater than bufCapacity.
 * @deprecated ICU 2.8 Use utrans_openIDs() instead, see utrans.h
 */
U_DEPRECATED int32_t U_EXPORT2 
utrans_getAvailableID(int32_t index,
 char* buf,
 int32_t bufCapacity);

#endif  /* U_HIDE_DEPRECATED_API */

#endif /* #if !UCONFIG_NO_TRANSLITERATION */

#endif

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