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fltk/FL/fl_utf8.h
Albrecht Schlosser 35c4ae5527 Don't expose X11 headers in user space any more (mostly). 
Platform headers should not be #include'd in public FLTK header files,
so that user space is not polluted by platform specific definitions.

See discussion and test file in discussion in fltk.general:
https://groups.google.com/forum/#!topic/fltkgeneral/gzmdRk2LvAk
https://groups.google.com/d/msg/fltkgeneral/gzmdRk2LvAk/EOe314ChBgAJ

This commit fixes FL/fl_utf8.h to #include X11 headers only if compiled
in the FLTK library (same as in FLTK 1.3.4, svn r 11266).

Todo (FLTK 1.4): Remove more unnecessary (unwanted) system header #include
statements from FL/x.H and other public header files.


git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3-porting@11268 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
2016-03-02 12:40:53 +00:00

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/*
* "$Id$"
*
* Author: Jean-Marc Lienher ( http://oksid.ch )
* Copyright 2000-2010 by O'ksi'D.
*
* This library is free software. Distribution and use rights are outlined in
* the file "COPYING" which should have been included with this file. If this
* file is missing or damaged, see the license at:
*
* http://www.fltk.org/COPYING.php
*
* Please report all bugs and problems on the following page:
*
* http://www.fltk.org/str.php
*/
/* Merged in some functionality from the fltk-2 version. IMM.
* The following code is an attempt to merge the functions incorporated in FLTK2
* with the functions provided in OksiD's fltk-1.1.6-utf8 port
*/
/**
\file fl_utf8.h
\brief header for Unicode and UTF-8 character handling
*/
#ifndef _HAVE_FL_UTF8_HDR_
#define _HAVE_FL_UTF8_HDR_
#include "Fl_Export.H"
#include "fl_types.h"
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
/*
*FIXME* -- PORTME: should not be in the header --
Many, if not all of the included headers below should not be included
here, because this pollutes user space definitions.
Note: FL/fl_utf8.h is included in many other header files!
*/
#ifdef WIN32
# include <sys/types.h>
# include <sys/stat.h>
# include <locale.h>
# include <ctype.h>
# define xchar wchar_t
# if !defined(FL_DLL) && !defined(__CYGWIN__)
# undef strdup
# define strdup _strdup
# undef putenv
# define putenv _putenv
# undef stricmp
# define stricmp _stricmp
# undef strnicmp
# define strnicmp _strnicmp
# undef chdir
# define chdir _chdir
# endif
#elif defined(__APPLE__) /* PORTME: should not be in the header */
# include <wchar.h>
# include <sys/stat.h>
# define xchar wchar_t
#elif defined(ANDROID)
# include <wchar.h>
# define xchar wchar_t
#elif defined(FL_PORTING)
# pragma message "FL_PORTING: include UTF-8 support files and define UTF-8 types"
# define xchar unsigned short
/* TODO: the condition below is not portable! */
#else /* X11 */
# include <sys/types.h>
# include <sys/stat.h>
# if defined(FL_LIBRARY) /* don't expose X11 headers in user space */
# include <X11/Xlocale.h>
# include <X11/Xlib.h>
# endif /* defined(FL_LIBRARY) -- don't expose X11 headers in user space */
# include <locale.h>
# define xchar unsigned short
#endif
#ifdef __cplusplus
extern "C" {
#endif
/** \addtogroup fl_unicode
@{
*/
/* F2: comes from FLTK2 */
/* OD: comes from OksiD */
/**
Return the number of bytes needed to encode the given UCS4 character in UTF-8.
\param [in] ucs UCS4 encoded character
\return number of bytes required
*/
FL_EXPORT int fl_utf8bytes(unsigned ucs);
/* OD: returns the byte length of the first UTF-8 char sequence (returns -1 if not valid) */
FL_EXPORT int fl_utf8len(char c);
/* OD: returns the byte length of the first UTF-8 char sequence (returns +1 if not valid) */
FL_EXPORT int fl_utf8len1(char c);
/* OD: returns the number of Unicode chars in the UTF-8 string */
FL_EXPORT int fl_utf_nb_char(const unsigned char *buf, int len);
/* F2: Convert the next UTF-8 char-sequence into a Unicode value (and say how many bytes were used) */
FL_EXPORT unsigned fl_utf8decode(const char* p, const char* end, int* len);
/* F2: Encode a Unicode value into a UTF-8 sequence, return the number of bytes used */
FL_EXPORT int fl_utf8encode(unsigned ucs, char* buf);
/* F2: Move forward to the next valid UTF-8 sequence start betwen start and end */
FL_EXPORT const char* fl_utf8fwd(const char* p, const char* start, const char* end);
/* F2: Move backward to the previous valid UTF-8 sequence start */
FL_EXPORT const char* fl_utf8back(const char* p, const char* start, const char* end);
/* XX: Convert a single 32-bit Unicode value into UTF16 */
FL_EXPORT unsigned fl_ucs_to_Utf16(const unsigned ucs, unsigned short *dst, const unsigned dstlen);
/* F2: Convert a UTF-8 string into UTF16 */
FL_EXPORT unsigned fl_utf8toUtf16(const char* src, unsigned srclen, unsigned short* dst, unsigned dstlen);
/* F2: Convert a UTF-8 string into a wide character string - makes UTF16 on win32, "UCS4" elsewhere */
FL_EXPORT unsigned fl_utf8towc(const char *src, unsigned srclen, wchar_t *dst, unsigned dstlen);
/* F2: Convert a wide character string to UTF-8 - takes in UTF16 on win32, "UCS4" elsewhere */
FL_EXPORT unsigned fl_utf8fromwc(char *dst, unsigned dstlen, const wchar_t *src, unsigned srclen);
/* F2: Convert a UTF-8 string into ASCII, eliding untranslatable glyphs */
FL_EXPORT unsigned fl_utf8toa (const char *src, unsigned srclen, char *dst, unsigned dstlen);
/* F2: Convert 8859-1 string to UTF-8 */
FL_EXPORT unsigned fl_utf8froma (char *dst, unsigned dstlen, const char *src, unsigned srclen);
/* F2: Returns true if the current O/S locale is UTF-8 */
FL_EXPORT int fl_utf8locale(void);
/* F2: Examine the first len characters of src, to determine if the input text is UTF-8 or not
* NOTE: The value returned is not simply boolean - it contains information about the probable
* type of the src text. */
FL_EXPORT int fl_utf8test(const char *src, unsigned len);
/* XX: return width of "raw" ucs character in columns.
* for internal use only */
FL_EXPORT int fl_wcwidth_(unsigned int ucs);
/* XX: return width of utf-8 character string in columns.
* NOTE: this may also do C1 control character (0x80 to 0x9f) to CP1252 mapping,
* depending on original build options */
FL_EXPORT int fl_wcwidth(const char *src);
/* OD: Return true if the character is non-spacing */
FL_EXPORT unsigned int fl_nonspacing(unsigned int ucs);
/* F2: Convert UTF-8 to a local multi-byte encoding - mainly for win32? */
FL_EXPORT unsigned fl_utf8to_mb(const char *src, unsigned srclen, char *dst, unsigned dstlen);
/* OD: Convert UTF-8 to a local multi-byte encoding */
FL_EXPORT char* fl_utf2mbcs(const char *src);
/* F2: Convert a local multi-byte encoding to UTF-8 - mainly for win32? */
FL_EXPORT unsigned fl_utf8from_mb(char *dst, unsigned dstlen, const char *src, unsigned srclen);
/*****************************************************************************/
#ifdef WIN32
/* OD: Attempt to convert the UTF-8 string to the current locale */
FL_EXPORT char *fl_utf8_to_locale(const char *s, int len, unsigned int codepage);
/* OD: Attempt to convert a string in the current locale to UTF-8 */
FL_EXPORT char *fl_locale_to_utf8(const char *s, int len, unsigned int codepage);
#elif defined(__APPLE__) /* PORTME: Fl_Screen_Driver ? - platform text encoding and conversion */
/* not needed */
#elif defined(FL_PORTING)
# pragma message "FL_PORTING: do you want to be able to convert from a local charset to UTF-8?"
#else /* X11 */
/* not needed */
#endif
/*****************************************************************************
* The following functions are intended to provide portable, UTF-8 aware
* versions of standard functions
*/
/* OD: UTF-8 aware strncasecmp - converts to lower case Unicode and tests */
FL_EXPORT int fl_utf_strncasecmp(const char *s1, const char *s2, int n);
/* OD: UTF-8 aware strcasecmp - converts to Unicode and tests */
FL_EXPORT int fl_utf_strcasecmp(const char *s1, const char *s2);
/* OD: return the Unicode lower case value of ucs */
FL_EXPORT int fl_tolower(unsigned int ucs);
/* OD: return the Unicode upper case value of ucs */
FL_EXPORT int fl_toupper(unsigned int ucs);
/* OD: converts the UTF-8 string to the lower case equivalent */
FL_EXPORT int fl_utf_tolower(const unsigned char *str, int len, char *buf);
/* OD: converts the UTF-8 string to the upper case equivalent */
FL_EXPORT int fl_utf_toupper(const unsigned char *str, int len, char *buf);
/* OD: Portable UTF-8 aware chmod wrapper */
FL_EXPORT int fl_chmod(const char* f, int mode);
/* OD: Portable UTF-8 aware access wrapper */
FL_EXPORT int fl_access(const char* f, int mode);
/* OD: Portable UTF-8 aware stat wrapper */
FL_EXPORT int fl_stat( const char *path, struct stat *buffer );
/* OD: Portable UTF-8 aware getcwd wrapper */
FL_EXPORT char* fl_getcwd( char *buf, int maxlen);
/* OD: Portable UTF-8 aware fopen wrapper */
FL_EXPORT FILE *fl_fopen(const char *f, const char *mode);
/* OD: Portable UTF-8 aware system wrapper */
FL_EXPORT int fl_system(const char* f);
/* OD: Portable UTF-8 aware execvp wrapper */
FL_EXPORT int fl_execvp(const char *file, char *const *argv);
/* OD: Portable UTF-8 aware open wrapper */
FL_EXPORT int fl_open(const char* f, int o, ...);
/* OD: Portable UTF-8 aware unlink wrapper */
FL_EXPORT int fl_unlink(const char *f);
/* OD: Portable UTF-8 aware rmdir wrapper */
FL_EXPORT int fl_rmdir(const char *f);
/* OD: Portable UTF-8 aware getenv wrapper */
FL_EXPORT char* fl_getenv(const char *name);
/* OD: Portable UTF-8 aware execvp wrapper */
FL_EXPORT int fl_mkdir(const char* f, int mode);
/* OD: Portable UTF-8 aware rename wrapper */
FL_EXPORT int fl_rename(const char* f, const char *t);
/* OD: Given a full pathname, this will create the directory path needed to hold the file named */
FL_EXPORT void fl_make_path_for_file( const char *path );
/* OD: recursively create a path in the file system */
FL_EXPORT char fl_make_path( const char *path );
/** @} */
/*****************************************************************************/
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* _HAVE_FL_UTF8_HDR_ */
/*
* End of "$Id$".
*/
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