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ðŸ“„ alphaindex.h(26.48 KB)
ðŸ“„ appendable.h(8.49 KB)
ðŸ“„ basictz.h(9.15 KB)
ðŸ“„ brkiter.h(27.8 KB)
ðŸ“„ bytestream.h(9.6 KB)
ðŸ“„ bytestrie.h(20.77 KB)
ðŸ“„ bytestriebuilder.h(7.08 KB)
ðŸ“„ calendar.h(105.74 KB)
ðŸ“„ caniter.h(7.43 KB)
ðŸ“„ casemap.h(25.33 KB)
ðŸ“„ char16ptr.h(7.22 KB)
ðŸ“„ chariter.h(24.05 KB)
ðŸ“„ choicfmt.h(23.91 KB)
ðŸ“„ coleitr.h(13.76 KB)
ðŸ“„ coll.h(56.23 KB)
ðŸ“„ compactdecimalformat.h(6.88 KB)
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ðŸ“„ currunit.h(4.05 KB)
ðŸ“„ datefmt.h(40.67 KB)
ðŸ“„ dbbi.h(1.19 KB)
ðŸ“„ dcfmtsym.h(20.13 KB)
ðŸ“„ decimfmt.h(87.38 KB)
ðŸ“„ docmain.h(6.97 KB)
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ðŸ“„ edits.h(20.74 KB)
ðŸ“„ enumset.h(2.08 KB)
ðŸ“„ errorcode.h(4.84 KB)
ðŸ“„ fieldpos.h(8.69 KB)
ðŸ“„ filteredbrk.h(5.37 KB)
ðŸ“„ fmtable.h(24.42 KB)
ðŸ“„ format.h(12.5 KB)
ðŸ“„ formattedvalue.h(10.27 KB)
ðŸ“„ fpositer.h(3.04 KB)
ðŸ“„ gender.h(3.33 KB)
ðŸ“„ gregocal.h(31.71 KB)
ðŸ“„ icudataver.h(1.03 KB)
ðŸ“„ icuplug.h(11.88 KB)
ðŸ“„ idna.h(12.7 KB)
ðŸ“„ listformatter.h(9.47 KB)
ðŸ“„ localebuilder.h(11.27 KB)
ðŸ“„ localematcher.h(22.5 KB)
ðŸ“„ localpointer.h(19.69 KB)
ðŸ“„ locdspnm.h(7.12 KB)
ðŸ“„ locid.h(47.4 KB)
ðŸ“„ measfmt.h(11.33 KB)
ðŸ“„ measunit.h(93.31 KB)
ðŸ“„ measure.h(4.32 KB)
ðŸ“„ messagepattern.h(33.71 KB)
ðŸ“„ msgfmt.h(44.11 KB)
ðŸ“„ normalizer2.h(34.03 KB)
ðŸ“„ normlzr.h(30.94 KB)
ðŸ“„ nounit.h(2.69 KB)
ðŸ“„ numberformatter.h(86.31 KB)
ðŸ“„ numberrangeformatter.h(30.14 KB)
ðŸ“„ numfmt.h(49.81 KB)
ðŸ“„ numsys.h(7.19 KB)
ðŸ“„ parseerr.h(3.08 KB)
ðŸ“„ parsepos.h(5.56 KB)
ðŸ“„ platform.h(28.08 KB)
ðŸ“„ plurfmt.h(25.2 KB)
ðŸ“„ plurrule.h(18.39 KB)
ðŸ“„ ptypes.h(3.49 KB)
ðŸ“„ putil.h(6.33 KB)
ðŸ“„ rbbi.h(26.58 KB)
ðŸ“„ rbnf.h(48.73 KB)
ðŸ“„ rbtz.h(15.6 KB)
ðŸ“„ regex.h(84.36 KB)
ðŸ“„ region.h(9.18 KB)
ðŸ“„ reldatefmt.h(22.62 KB)
ðŸ“„ rep.h(9.37 KB)
ðŸ“„ resbund.h(18.07 KB)
ðŸ“„ schriter.h(6.32 KB)
ðŸ“„ scientificnumberformatter.h(6.4 KB)
ðŸ“„ search.h(22.22 KB)
ðŸ“„ selfmt.h(14.3 KB)
ðŸ“„ simpleformatter.h(12.59 KB)
ðŸ“„ simpletz.h(45.44 KB)
ðŸ“„ smpdtfmt.h(70.97 KB)
ðŸ“„ sortkey.h(11.18 KB)
ðŸ“„ std_string.h(1.05 KB)
ðŸ“„ strenum.h(9.92 KB)
ðŸ“„ stringoptions.h(5.79 KB)
ðŸ“„ stringpiece.h(7.38 KB)
ðŸ“„ stringtriebuilder.h(15.33 KB)
ðŸ“„ stsearch.h(21.3 KB)
ðŸ“„ symtable.h(4.27 KB)
ðŸ“„ tblcoll.h(36.61 KB)
ðŸ“„ timezone.h(41.02 KB)
ðŸ“„ tmunit.h(3.38 KB)
ðŸ“„ tmutamt.h(4.9 KB)
ðŸ“„ tmutfmt.h(7.85 KB)
ðŸ“„ translit.h(65.82 KB)
ðŸ“„ tzfmt.h(42.89 KB)
ðŸ“„ tznames.h(16.85 KB)
ðŸ“„ tzrule.h(35.37 KB)
ðŸ“„ tztrans.h(6.12 KB)
ðŸ“„ ubidi.h(89.56 KB)
ðŸ“„ ubiditransform.h(12.65 KB)
ðŸ“„ ubrk.h(23.97 KB)
ðŸ“„ ucal.h(56.9 KB)
ðŸ“„ ucasemap.h(15.18 KB)
ðŸ“„ ucat.h(5.36 KB)
ðŸ“„ uchar.h(140.56 KB)
ðŸ“„ ucharstrie.h(22.58 KB)
ðŸ“„ ucharstriebuilder.h(7.21 KB)
ðŸ“„ uchriter.h(13.2 KB)
ðŸ“„ uclean.h(11.21 KB)
ðŸ“„ ucnv.h(83.09 KB)
ðŸ“„ ucnv_cb.h(6.59 KB)
ðŸ“„ ucnv_err.h(20.99 KB)
ðŸ“„ ucnvsel.h(6.14 KB)
ðŸ“„ ucol.h(61.46 KB)
ðŸ“„ ucoleitr.h(9.46 KB)
ðŸ“„ uconfig.h(12.07 KB)
ðŸ“„ ucpmap.h(5.53 KB)
ðŸ“„ ucptrie.h(22.46 KB)
ðŸ“„ ucsdet.h(14.67 KB)
ðŸ“„ ucurr.h(16.12 KB)
ðŸ“„ udat.h(60.88 KB)
ðŸ“„ udata.h(15.56 KB)
ðŸ“„ udateintervalformat.h(10.03 KB)
ðŸ“„ udatpg.h(26.01 KB)
ðŸ“„ udisplaycontext.h(5.89 KB)
ðŸ“„ uenum.h(7.78 KB)
ðŸ“„ ufieldpositer.h(4.36 KB)
ðŸ“„ uformattable.h(10.94 KB)
ðŸ“„ uformattedvalue.h(12.14 KB)
ðŸ“„ ugender.h(2 KB)
ðŸ“„ uidna.h(33.37 KB)
ðŸ“„ uiter.h(22.77 KB)
ðŸ“„ uldnames.h(10.45 KB)
ðŸ“„ ulistformatter.h(8.83 KB)
ðŸ“„ uloc.h(52.54 KB)
ðŸ“„ ulocdata.h(11.26 KB)
ðŸ“„ umachine.h(14.53 KB)
ðŸ“„ umisc.h(1.33 KB)
ðŸ“„ umsg.h(24.23 KB)
ðŸ“„ umutablecptrie.h(8.24 KB)
ðŸ“„ unifilt.h(3.96 KB)
ðŸ“„ unifunct.h(4.04 KB)
ðŸ“„ unimatch.h(6.1 KB)
ðŸ“„ unirepl.h(3.38 KB)
ðŸ“„ uniset.h(64.9 KB)
ðŸ“„ unistr.h(170.43 KB)
ðŸ“„ unorm.h(20.52 KB)
ðŸ“„ unorm2.h(24.66 KB)
ðŸ“„ unum.h(53.62 KB)
ðŸ“„ unumberformatter.h(25.36 KB)
ðŸ“„ unumsys.h(7.21 KB)
ðŸ“„ uobject.h(10.68 KB)
ðŸ“„ upluralrules.h(7.88 KB)
ðŸ“„ uregex.h(72.05 KB)
ðŸ“„ uregion.h(9.84 KB)
ðŸ“„ ureldatefmt.h(17.26 KB)
ðŸ“„ urename.h(130.97 KB)
ðŸ“„ urep.h(5.38 KB)
ðŸ“„ ures.h(36.54 KB)
ðŸ“„ uscript.h(26.87 KB)
ðŸ“„ usearch.h(38.12 KB)
ðŸ“„ uset.h(40 KB)
ðŸ“„ usetiter.h(9.55 KB)
ðŸ“„ ushape.h(18 KB)
ðŸ“„ uspoof.h(65.9 KB)
ðŸ“„ usprep.h(8.14 KB)
ðŸ“„ ustdio.h(38.54 KB)
ðŸ“„ ustream.h(1.89 KB)
ðŸ“„ ustring.h(72.47 KB)
ðŸ“„ ustringtrie.h(3.15 KB)
ðŸ“„ utext.h(58.13 KB)
ðŸ“„ utf.h(7.86 KB)
ðŸ“„ utf16.h(23.32 KB)
ðŸ“„ utf32.h(763 B)
ðŸ“„ utf8.h(30.96 KB)
ðŸ“„ utf_old.h(45.83 KB)
ðŸ“„ utmscale.h(13.78 KB)
ðŸ“„ utrace.h(15.73 KB)
ðŸ“„ utrans.h(25.52 KB)
ðŸ“„ utypes.h(30.74 KB)
ðŸ“„ uvernum.h(6.67 KB)
ðŸ“„ uversion.h(6 KB)
ðŸ“„ vtzone.h(20.3 KB)

Editing: icuplug.h

// © 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
/*
******************************************************************************
*
*   Copyright (C) 2009-2015, International Business Machines
*   Corporation and others.  All Rights Reserved.
*
******************************************************************************
*
*  FILE NAME : icuplug.h
*
*   Date         Name        Description
*   10/29/2009   sl          New.
******************************************************************************
*/

/**
 * \file
 * \brief C API: ICU Plugin API 
 *
 * <h2>C API: ICU Plugin API</h2>
 *
 * <p>C API allowing run-time loadable modules that extend or modify ICU functionality.</p>
 *
 * <h3>Loading and Configuration</h3>
 *
 * <p>At ICU startup time, the environment variable "ICU_PLUGINS" will be 
 * queried for a directory name.  If it is not set, the preprocessor symbol 
 * "DEFAULT_ICU_PLUGINS" will be checked for a default value.</p>
 *
 * <p>Within the above-named directory, the file  "icuplugins##.txt" will be 
 * opened, if present, where ## is the major+minor number of the currently 
 * running ICU (such as, 44 for ICU 4.4, thus icuplugins44.txt)</p>
 *
 * <p>The configuration file has this format:</p>
 *
 * <ul>
 * <li>Hash (#) begins a comment line</li>
 * 
 * <li>Non-comment lines have two or three components:
 * LIBRARYNAME     ENTRYPOINT     [ CONFIGURATION .. ]</li>
 *
 * <li>Tabs or spaces separate the three items.</li>
 *
 * <li>LIBRARYNAME is the name of a shared library, either a short name if 
 * it is on the loader path,  or a full pathname.</li>
 *
 * <li>ENTRYPOINT is the short (undecorated) symbol name of the plugin's 
 * entrypoint, as above.</li>
 *
 * <li>CONFIGURATION is the entire rest of the line . It's passed as-is to 
 * the plugin.</li>
 * </ul>
 *
 * <p>An example configuration file is, in its entirety:</p>
 *
 * \code
 * # this is icuplugins44.txt
 * testplug.dll    myPlugin        hello=world
 * \endcode
 * <p>Plugins are categorized as "high" or "low" level.  Low level are those 
 * which must be run BEFORE high level plugins, and before any operations 
 * which cause ICU to be 'initialized'.  If a plugin is low level but 
 * causes ICU to allocate memory or become initialized, that plugin is said 
 * to cause a 'level change'. </p>
 *
 * <p>At load time, ICU first queries all plugins to determine their level, 
 * then loads all 'low' plugins first, and then loads all 'high' plugins.  
 * Plugins are otherwise loaded in the order listed in the configuration file.</p>
 * 
 * <h3>Implementing a Plugin</h3>
 * \code
 * U_CAPI UPlugTokenReturn U_EXPORT2 
 * myPlugin (UPlugData *plug, UPlugReason reason, UErrorCode *status) {
 *   if(reason==UPLUG_REASON_QUERY) {
 *      uplug_setPlugName(plug, "Simple Plugin");
 *      uplug_setPlugLevel(plug, UPLUG_LEVEL_HIGH);
 *    } else if(reason==UPLUG_REASON_LOAD) {
 *       ... Set up some ICU things here.... 
 *    } else if(reason==UPLUG_REASON_UNLOAD) {
 *       ... unload, clean up ...
 *    }
 *   return UPLUG_TOKEN;
 *  }
 * \endcode
 *
 * <p>The UPlugData*  is an opaque pointer to the plugin-specific data, and is 
 * used in all other API calls.</p>
 *
 * <p>The API contract is:</p>
 * <ol><li>The plugin MUST always return UPLUG_TOKEN as a return value- to 
 * indicate that it is a valid plugin.</li>
 *
 * <li>When the 'reason' parameter is set to UPLUG_REASON_QUERY,  the 
 * plugin MUST call uplug_setPlugLevel() to indicate whether it is a high 
 * level or low level plugin.</li>
 *
 * <li>When the 'reason' parameter is UPLUG_REASON_QUERY, the plugin 
 * SHOULD call uplug_setPlugName to indicate a human readable plugin name.</li></ol>
 * 
 *
 * \internal ICU 4.4 Technology Preview
 */

#ifndef ICUPLUG_H
#define ICUPLUG_H

#include "unicode/utypes.h"

#if UCONFIG_ENABLE_PLUGINS || defined(U_IN_DOXYGEN)

/* === Basic types === */

#ifndef U_HIDE_INTERNAL_API
/**
 * @{
 * Opaque structure passed to/from a plugin. 
 * use the APIs to access it.
 * @internal ICU 4.4 Technology Preview
 */

struct UPlugData;
typedef struct UPlugData UPlugData;

/** @} */

/**
 * Random Token to identify a valid ICU plugin. Plugins must return this 
 * from the entrypoint.
 * @internal ICU 4.4 Technology Preview
 */
#define UPLUG_TOKEN 0x54762486

/**
 * Max width of names, symbols, and configuration strings
 * @internal ICU 4.4 Technology Preview
 */
#define UPLUG_NAME_MAX              100

/**
 * Return value from a plugin entrypoint. 
 * Must always be set to UPLUG_TOKEN
 * @see UPLUG_TOKEN
 * @internal ICU 4.4 Technology Preview
 */
typedef uint32_t UPlugTokenReturn;

/**
 * Reason code for the entrypoint's call
 * @internal ICU 4.4 Technology Preview
 */
typedef enum {
    UPLUG_REASON_QUERY = 0,     /**< The plugin is being queried for info. **/
    UPLUG_REASON_LOAD = 1,     /**< The plugin is being loaded. **/
    UPLUG_REASON_UNLOAD = 2,   /**< The plugin is being unloaded. **/
    /**
     * Number of known reasons.
     * @internal The numeric value may change over time, see ICU ticket #12420.
     */
    UPLUG_REASON_COUNT
} UPlugReason;

/**
 * Level of plugin loading
 *     INITIAL:  UNKNOWN
 *       QUERY:   INVALID ->  { LOW | HIGH }
 *     ERR -> INVALID
 * @internal ICU 4.4 Technology Preview
 */
typedef enum {
    UPLUG_LEVEL_INVALID = 0,     /**< The plugin is invalid, hasn't called uplug_setLevel, or can't load. **/
    UPLUG_LEVEL_UNKNOWN = 1,     /**< The plugin is waiting to be installed. **/
    UPLUG_LEVEL_LOW     = 2,     /**< The plugin must be called before u_init completes **/
    UPLUG_LEVEL_HIGH    = 3,     /**< The plugin can run at any time. **/
    /**
     * Number of known levels.
     * @internal The numeric value may change over time, see ICU ticket #12420.
     */
    UPLUG_LEVEL_COUNT
} UPlugLevel;

/**
 * Entrypoint for an ICU plugin.
 * @param plug the UPlugData handle. 
 * @param status the plugin's extended status code.
 * @return A valid plugin must return UPLUG_TOKEN
 * @internal ICU 4.4 Technology Preview
 */
typedef UPlugTokenReturn (U_EXPORT2 UPlugEntrypoint) (
                  UPlugData *plug,
                  UPlugReason reason,
                  UErrorCode *status);

/* === Needed for Implementing === */

/**
 * Request that this plugin not be unloaded at cleanup time.
 * This is appropriate for plugins which cannot be cleaned up.
 * @see u_cleanup()
 * @param plug plugin
 * @param dontUnload  set true if this plugin can't be unloaded
 * @internal ICU 4.4 Technology Preview
 */
U_INTERNAL void U_EXPORT2 
uplug_setPlugNoUnload(UPlugData *plug, UBool dontUnload);

/**
 * Set the level of this plugin.
 * @param plug plugin data handle
 * @param level the level of this plugin
 * @internal ICU 4.4 Technology Preview
 */
U_INTERNAL void U_EXPORT2
uplug_setPlugLevel(UPlugData *plug, UPlugLevel level);

/**
 * Get the level of this plugin.
 * @param plug plugin data handle
 * @return the level of this plugin
 * @internal ICU 4.4 Technology Preview
 */
U_INTERNAL UPlugLevel U_EXPORT2
uplug_getPlugLevel(UPlugData *plug);

/**
 * Get the lowest level of plug which can currently load.
 * For example, if UPLUG_LEVEL_LOW is returned, then low level plugins may load
 * if UPLUG_LEVEL_HIGH is returned, then only high level plugins may load.
 * @return the lowest level of plug which can currently load
 * @internal ICU 4.4 Technology Preview
 */
U_INTERNAL UPlugLevel U_EXPORT2
uplug_getCurrentLevel(void);

/**
 * Get plug load status
 * @return The error code of this plugin's load attempt.
 * @internal ICU 4.4 Technology Preview
 */
U_INTERNAL UErrorCode U_EXPORT2
uplug_getPlugLoadStatus(UPlugData *plug);

/**
 * Set the human-readable name of this plugin.
 * @param plug plugin data handle
 * @param name the name of this plugin. The first UPLUG_NAME_MAX characters willi be copied into a new buffer.
 * @internal ICU 4.4 Technology Preview
 */
U_INTERNAL void U_EXPORT2
uplug_setPlugName(UPlugData *plug, const char *name);

/**
 * Get the human-readable name of this plugin.
 * @param plug plugin data handle
 * @return the name of this plugin
 * @internal ICU 4.4 Technology Preview
 */
U_INTERNAL const char * U_EXPORT2
uplug_getPlugName(UPlugData *plug);

/**
 * Return the symbol name for this plugin, if known.
 * @param plug plugin data handle
 * @return the symbol name, or NULL
 * @internal ICU 4.4 Technology Preview
 */
U_INTERNAL const char * U_EXPORT2
uplug_getSymbolName(UPlugData *plug);

/**
 * Return the library name for this plugin, if known.
 * @param plug plugin data handle
 * @param status error code
 * @return the library name, or NULL
 * @internal ICU 4.4 Technology Preview
 */
U_INTERNAL const char * U_EXPORT2
uplug_getLibraryName(UPlugData *plug, UErrorCode *status);

/**
 * Return the library used for this plugin, if known.
 * Plugins could use this to load data out of their 
 * @param plug plugin data handle
 * @return the library, or NULL
 * @internal ICU 4.4 Technology Preview
 */
U_INTERNAL void * U_EXPORT2
uplug_getLibrary(UPlugData *plug);

/**
 * Return the plugin-specific context data.
 * @param plug plugin data handle
 * @return the context, or NULL if not set
 * @internal ICU 4.4 Technology Preview
 */
U_INTERNAL void * U_EXPORT2
uplug_getContext(UPlugData *plug);

/**
 * Set the plugin-specific context data.
 * @param plug plugin data handle
 * @param context new context to set
 * @internal ICU 4.4 Technology Preview
 */
U_INTERNAL void U_EXPORT2
uplug_setContext(UPlugData *plug, void *context);

/**
 * Get the configuration string, if available.
 * The string is in the platform default codepage.
 * @param plug plugin data handle
 * @return configuration string, or else null.
 * @internal ICU 4.4 Technology Preview
 */
U_INTERNAL const char * U_EXPORT2
uplug_getConfiguration(UPlugData *plug);

/**
 * Return all currently installed plugins, from newest to oldest
 * Usage Example:
 * \code
 *    UPlugData *plug = NULL;
 *    while(plug=uplug_nextPlug(plug)) {
 *        ... do something with 'plug' ...
 *    }
 * \endcode
 * Not thread safe- do not call while plugs are added or removed.
 * @param prior pass in 'NULL' to get the first (most recent) plug, 
 *  otherwise pass the value returned on a prior call to uplug_nextPlug
 * @return the next oldest plugin, or NULL if no more.
 * @internal ICU 4.4 Technology Preview
 */
U_INTERNAL UPlugData* U_EXPORT2
uplug_nextPlug(UPlugData *prior);

/**
 * Inject a plugin as if it were loaded from a library.
 * This is useful for testing plugins. 
 * Note that it will have a 'NULL' library pointer associated
 * with it, and therefore no llibrary will be closed at cleanup time.
 * Low level plugins may not be able to load, as ordering can't be enforced.
 * @param entrypoint entrypoint to install
 * @param config user specified configuration string, if available, or NULL.
 * @param status error result
 * @return the new UPlugData associated with this plugin, or NULL if error.
 * @internal ICU 4.4 Technology Preview
 */
U_INTERNAL UPlugData* U_EXPORT2
uplug_loadPlugFromEntrypoint(UPlugEntrypoint *entrypoint, const char *config, UErrorCode *status);

/**
 * Inject a plugin from a library, as if the information came from a config file.
 * Low level plugins may not be able to load, and ordering can't be enforced.
 * @param libName DLL name to load
 * @param sym symbol of plugin (UPlugEntrypoint function)
 * @param config configuration string, or NULL
 * @param status error result
 * @return the new UPlugData associated with this plugin, or NULL if error.
 * @internal ICU 4.4 Technology Preview
 */
U_INTERNAL UPlugData* U_EXPORT2
uplug_loadPlugFromLibrary(const char *libName, const char *sym, const char *config, UErrorCode *status);

/**
 * Remove a plugin. 
 * Will request the plugin to be unloaded, and close the library if needed
 * @param plug plugin handle to close
 * @param status error result
 * @internal ICU 4.4 Technology Preview
 */
U_INTERNAL void U_EXPORT2
uplug_removePlug(UPlugData *plug, UErrorCode *status);
#endif  /* U_HIDE_INTERNAL_API */

#endif /* UCONFIG_ENABLE_PLUGINS */

#endif /* _ICUPLUG */

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