Move ICU headers from public/{common,i18n} to source/{common,i18n}

public/i18n/unicode/ucsdet.h

Index: public/i18n/unicode/ucsdet.h
diff --git a/public/i18n/unicode/ucsdet.h b/public/i18n/unicode/ucsdet.h
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index dc492ee229e0183a635d9b93647af91b7a9b2fe5..0000000000000000000000000000000000000000
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-/*
- **********************************************************************
- *   Copyright (C) 2005-2010, International Business Machines
- *   Corporation and others.  All Rights Reserved.
- **********************************************************************
- *   file name:  ucsdet.h
- *   encoding:   US-ASCII
- *   indentation:4
- *
- *   created on: 2005Aug04
- *   created by: Andy Heninger
- *
- *   ICU Character Set Detection, API for C
- *
- *   Draft version 18 Oct 2005
- *
- */
-
-#ifndef __UCSDET_H
-#define __UCSDET_H
-
-#include "unicode/utypes.h"
-
-#if !UCONFIG_NO_CONVERSION
-
-#include "unicode/localpointer.h"
-#include "unicode/uenum.h"
-
-/**
- * \file 
- * \brief C API: Charset Detection API
- *
- * This API provides a facility for detecting the
- * charset or encoding of character data in an unknown text format.
- * The input data can be from an array of bytes.
- * <p>
- * Character set detection is at best an imprecise operation.  The detection
- * process will attempt to identify the charset that best matches the characteristics
- * of the byte data, but the process is partly statistical in nature, and
- * the results can not be guaranteed to always be correct.
- * <p>
- * For best accuracy in charset detection, the input data should be primarily
- * in a single language, and a minimum of a few hundred bytes worth of plain text
- * in the language are needed.  The detection process will attempt to
- * ignore html or xml style markup that could otherwise obscure the content.
- */
- 
-
-struct UCharsetDetector;
-/**
-  * Structure representing a charset detector
-  * @stable ICU 3.6
-  */
-typedef struct UCharsetDetector UCharsetDetector;
-
-struct UCharsetMatch;
-/**
-  *  Opaque structure representing a match that was identified
-  *  from a charset detection operation.
-  *  @stable ICU 3.6
-  */
-typedef struct UCharsetMatch UCharsetMatch;
-
-/**
-  *  Open a charset detector.
-  *
-  *  @param status Any error conditions occurring during the open
-  *                operation are reported back in this variable.
-  *  @return the newly opened charset detector.
-  *  @stable ICU 3.6
-  */
-U_STABLE UCharsetDetector * U_EXPORT2
-ucsdet_open(UErrorCode   *status);
-
-/**
-  * Close a charset detector.  All storage and any other resources
-  *   owned by this charset detector will be released.  Failure to
-  *   close a charset detector when finished with it can result in
-  *   memory leaks in the application.
-  *
-  *  @param ucsd  The charset detector to be closed.
-  *  @stable ICU 3.6
-  */
-U_STABLE void U_EXPORT2
-ucsdet_close(UCharsetDetector *ucsd);
-
-#if U_SHOW_CPLUSPLUS_API
-
-U_NAMESPACE_BEGIN
-
-/**
- * \class LocalUCharsetDetectorPointer
- * "Smart pointer" class, closes a UCharsetDetector via ucsdet_close().
- * For most methods see the LocalPointerBase base class.
- *
- * @see LocalPointerBase
- * @see LocalPointer
- * @stable ICU 4.4
- */
-U_DEFINE_LOCAL_OPEN_POINTER(LocalUCharsetDetectorPointer, UCharsetDetector, ucsdet_close);
-
-U_NAMESPACE_END
-
-#endif
-
-/**
-  * Set the input byte data whose charset is to detected.
-  *
-  * Ownership of the input  text byte array remains with the caller.
-  * The input string must not be altered or deleted until the charset
-  * detector is either closed or reset to refer to different input text.
-  *
-  * @param ucsd   the charset detector to be used.
-  * @param textIn the input text of unknown encoding.   .
-  * @param len    the length of the input text, or -1 if the text
-  *               is NUL terminated.
-  * @param status any error conditions are reported back in this variable.
-  *
-  * @stable ICU 3.6
-  */
-U_STABLE void U_EXPORT2
-ucsdet_setText(UCharsetDetector *ucsd, const char *textIn, int32_t len, UErrorCode *status);
-
-
-/** Set the declared encoding for charset detection.
- *  The declared encoding of an input text is an encoding obtained
- *  by the user from an http header or xml declaration or similar source that
- *  can be provided as an additional hint to the charset detector.
- *
- *  How and whether the declared encoding will be used during the
- *  detection process is TBD.
- *
- * @param ucsd      the charset detector to be used.
- * @param encoding  an encoding for the current data obtained from
- *                  a header or declaration or other source outside
- *                  of the byte data itself.
- * @param length    the length of the encoding name, or -1 if the name string
- *                  is NUL terminated.
- * @param status    any error conditions are reported back in this variable.
- *
- * @stable ICU 3.6
- */
-U_STABLE void U_EXPORT2
-ucsdet_setDeclaredEncoding(UCharsetDetector *ucsd, const char *encoding, int32_t length, UErrorCode *status);
-
-
-/**
- * Return the charset that best matches the supplied input data.
- * 
- * Note though, that because the detection 
- * only looks at the start of the input data,
- * there is a possibility that the returned charset will fail to handle
- * the full set of input data.
- * <p>
- * The returned UCharsetMatch object is owned by the UCharsetDetector.
- * It will remain valid until the detector input is reset, or until
- * the detector is closed.
- * <p>
- * The function will fail if
- *  <ul>
- *    <li>no charset appears to match the data.</li>
- *    <li>no input text has been provided</li>
- *  </ul>
- *
- * @param ucsd      the charset detector to be used.
- * @param status    any error conditions are reported back in this variable.
- * @return          a UCharsetMatch  representing the best matching charset,
- *                  or NULL if no charset matches the byte data.
- *
- * @stable ICU 3.6
- */
-U_STABLE const UCharsetMatch * U_EXPORT2
-ucsdet_detect(UCharsetDetector *ucsd, UErrorCode *status);
-    
-
-/**
- *  Find all charset matches that appear to be consistent with the input,
- *  returning an array of results.  The results are ordered with the
- *  best quality match first.
- *
- *  Because the detection only looks at a limited amount of the
- *  input byte data, some of the returned charsets may fail to handle
- *  the all of input data.
- *  <p>
- *  The returned UCharsetMatch objects are owned by the UCharsetDetector.
- *  They will remain valid until the detector is closed or modified
- *  
- * <p>
- * Return an error if 
- *  <ul>
- *    <li>no charsets appear to match the input data.</li>
- *    <li>no input text has been provided</li>
- *  </ul>
- * 
- * @param ucsd          the charset detector to be used.
- * @param matchesFound  pointer to a variable that will be set to the
- *                      number of charsets identified that are consistent with
- *                      the input data.  Output only.
- * @param status        any error conditions are reported back in this variable.
- * @return              A pointer to an array of pointers to UCharSetMatch objects.
- *                      This array, and the UCharSetMatch instances to which it refers,
- *                      are owned by the UCharsetDetector, and will remain valid until
- *                      the detector is closed or modified.
- * @stable ICU 3.6
- */
-U_STABLE const UCharsetMatch ** U_EXPORT2
-ucsdet_detectAll(UCharsetDetector *ucsd, int32_t *matchesFound, UErrorCode *status);
-
-
-
-/**
- *  Get the name of the charset represented by a UCharsetMatch.
- *
- *  The storage for the returned name string is owned by the
- *  UCharsetMatch, and will remain valid while the UCharsetMatch
- *  is valid.
- *
- *  The name returned is suitable for use with the ICU conversion APIs.
- *
- *  @param ucsm    The charset match object.
- *  @param status  Any error conditions are reported back in this variable.
- *  @return        The name of the matching charset.
- *
- *  @stable ICU 3.6
- */
-U_STABLE const char * U_EXPORT2
-ucsdet_getName(const UCharsetMatch *ucsm, UErrorCode *status);
-
-/**
- *  Get a confidence number for the quality of the match of the byte
- *  data with the charset.  Confidence numbers range from zero to 100,
- *  with 100 representing complete confidence and zero representing
- *  no confidence.
- *
- *  The confidence values are somewhat arbitrary.  They define an
- *  an ordering within the results for any single detection operation
- *  but are not generally comparable between the results for different input.
- *
- *  A confidence value of ten does have a general meaning - it is used
- *  for charsets that can represent the input data, but for which there
- *  is no other indication that suggests that the charset is the correct one.
- *  Pure 7 bit ASCII data, for example, is compatible with a
- *  great many charsets, most of which will appear as possible matches
- *  with a confidence of 10.
- *
- *  @param ucsm    The charset match object.
- *  @param status  Any error conditions are reported back in this variable.
- *  @return        A confidence number for the charset match.
- *
- *  @stable ICU 3.6
- */
-U_STABLE int32_t U_EXPORT2
-ucsdet_getConfidence(const UCharsetMatch *ucsm, UErrorCode *status);
-
-/**
- *  Get the RFC 3066 code for the language of the input data.
- *
- *  The Charset Detection service is intended primarily for detecting
- *  charsets, not language.  For some, but not all, charsets, a language is
- *  identified as a byproduct of the detection process, and that is what
- *  is returned by this function.
- *
- *  CAUTION:
- *    1.  Language information is not available for input data encoded in
- *        all charsets. In particular, no language is identified
- *        for UTF-8 input data.
- *
- *    2.  Closely related languages may sometimes be confused.
- *
- *  If more accurate language detection is required, a linguistic
- *  analysis package should be used.
- *
- *  The storage for the returned name string is owned by the
- *  UCharsetMatch, and will remain valid while the UCharsetMatch
- *  is valid.
- *
- *  @param ucsm    The charset match object.
- *  @param status  Any error conditions are reported back in this variable.
- *  @return        The RFC 3066 code for the language of the input data, or
- *                 an empty string if the language could not be determined.
- *
- *  @stable ICU 3.6
- */
-U_STABLE const char * U_EXPORT2
-ucsdet_getLanguage(const UCharsetMatch *ucsm, UErrorCode *status);
-
-
-/**
-  *  Get the entire input text as a UChar string, placing it into
-  *  a caller-supplied buffer.  A terminating
-  *  NUL character will be appended to the buffer if space is available.
-  *
-  *  The number of UChars in the output string, not including the terminating
-  *  NUL, is returned. 
-  *
-  *  If the supplied buffer is smaller than required to hold the output,
-  *  the contents of the buffer are undefined.  The full output string length
-  *  (in UChars) is returned as always, and can be used to allocate a buffer
-  *  of the correct size.
-  *
-  *
-  * @param ucsm    The charset match object.
-  * @param buf     A UChar buffer to be filled with the converted text data.
-  * @param cap     The capacity of the buffer in UChars.
-  * @param status  Any error conditions are reported back in this variable.
-  * @return        The number of UChars in the output string.
-  *
-  * @stable ICU 3.6
-  */
-U_STABLE  int32_t U_EXPORT2
-ucsdet_getUChars(const UCharsetMatch *ucsm,
-                 UChar *buf, int32_t cap, UErrorCode *status);
-
-
-
-/**
-  *  Get an iterator over the set of all detectable charsets - 
-  *  over the charsets that are known to the charset detection
-  *  service.
-  *
-  *  The returned UEnumeration provides access to the names of
-  *  the charsets.
-  *
-  *  The state of the Charset detector that is passed in does not
-  *  affect the result of this function, but requiring a valid, open
-  *  charset detector as a parameter insures that the charset detection
-  *  service has been safely initialized and that the required detection
-  *  data is available.
-  *
-  *  @param ucsd a Charset detector.
-  *  @param status  Any error conditions are reported back in this variable.
-  *  @return an iterator providing access to the detectable charset names.
-  *  @stable ICU 3.6
-  */
-U_STABLE  UEnumeration * U_EXPORT2
-ucsdet_getAllDetectableCharsets(const UCharsetDetector *ucsd,  UErrorCode *status);
-
-
-/**
-  *  Test whether input filtering is enabled for this charset detector.
-  *  Input filtering removes text that appears to be HTML or xml
-  *  markup from the input before applying the code page detection
-  *  heuristics.
-  *
-  *  @param ucsd  The charset detector to check.
-  *  @return TRUE if filtering is enabled.
-  *  @stable ICU 3.6
-  */
-U_STABLE  UBool U_EXPORT2
-ucsdet_isInputFilterEnabled(const UCharsetDetector *ucsd);
-
-
-/**
- * Enable filtering of input text. If filtering is enabled,
- * text within angle brackets ("<" and ">") will be removed
- * before detection, which will remove most HTML or xml markup.
- *
- * @param ucsd   the charset detector to be modified.
- * @param filter <code>true</code> to enable input text filtering.
- * @return The previous setting.
- *
- * @stable ICU 3.6
- */
-U_STABLE  UBool U_EXPORT2
-ucsdet_enableInputFilter(UCharsetDetector *ucsd, UBool filter);
-
-#endif
-#endif   /* __UCSDET_H */
-
-