GIF89a; EcchiShell v1.0
//proc/self/root/usr/include/unicode/

> does for UnicodeString. It should convert one byte at a time, and once a character is converted then check to see if it's whitespace or in the scanset. If it's whitespace or in the scanset, put all the bytes back (do nothing for sprintf/sscanf). * If bad string data is encountered, make sure that the function fails without memory leaks and the unconvertable characters are valid substitution or are escaped characters. * u_fungetc() can't unget a character when it's at the beginning of the internal conversion buffer. For example, read the buffer size # of characters, and then ungetc to get the previous character that was at the end of the last buffer. * u_fflush() and u_fclose should return an int32_t like C99 functions. 0 is returned if the operation was successful and EOF otherwise. * u_fsettransliterator does not support U_READ side of transliteration. * The format specifier should limit the size of a format or honor it in order to prevent buffer overruns. (e.g. %256.256d). * u_fread and u_fwrite don't exist. They're needed for reading and writing data structures without any conversion. * u_file_read and u_file_write are used for writing strings. u_fgets and u_fputs or u_fread and u_fwrite should be used to do this. * The width parameter for all scanf formats, including scanset, needs better testing. This prevents buffer overflows. * Figure out what is suppose to happen when a codepage is changed midstream. Maybe a flush or a rewind are good enough. * Make sure that a UFile opened with "rw" can be used after using u_fflush with a u_frewind. * scanf(%i) should detect what type of number to use. * Add more testing of the alternate format, %# * Look at newline handling of fputs/puts * Think more about codeunit/codepoint error handling/support in %S,%s,%C,%c,%[] * Complete the file documentation with proper doxygen formatting. See http://oss.software.ibm.com/pipermail/icu/2003-July/005647.html */ /** * \file * \brief C API: Unicode stdio-like API * *

Unicode stdio-like C API

* *

This API provides an stdio-like API wrapper around ICU's other * formatting and parsing APIs. It is meant to ease the transition of adding * Unicode support to a preexisting applications using stdio. The following * is a small list of noticable differences between stdio and ICU I/O's * ustdio implementation.

* *
    *
  • Locale specific formatting and parsing is only done with file IO.
    • *
  • u_fstropen can be used to simulate file IO with strings. * This is similar to the iostream API, and it allows locale specific * formatting and parsing to be used.
    • *
  • This API provides uniform formatting and parsing behavior between * platforms (unlike the standard stdio implementations found on various * platforms).
    • *
  • This API is better suited for text data handling than binary data * handling when compared to the typical stdio implementation.
    • *
  • You can specify a Transliterator while using the file IO.
    • *
  • You can specify a file's codepage separately from the default * system codepage.
    • *
* *

Formatting and Parsing Specification

* * General printf format:
* %[format modifier][width][.precision][type modifier][format] * * General scanf format:
* %[*][format modifier][width][type modifier][format] *
formatdefault
printf
type		default
scanf
type		description
%EdoublefloatScientific with an uppercase exponent
%edoublefloatScientific with a lowercase exponent
%GdoublefloatUse %E or %f for best format
%gdoublefloatUse %e or %f for best format
%fdoublefloatSimple floating point without the exponent
%Xint32_tint32_tustdio special uppercase hex radix formatting
%xint32_tint32_tustdio special lowercase hex radix formatting
%dint32_tint32_tDecimal format
%iint32_tint32_tSame as %d
%nint32_tint32_tcount (write the number of UTF-16 codeunits read/written)
%oint32_tint32_tustdio special octal radix formatting
%uuint32_tuint32_tDecimal format
%pvoid *void *Prints the pointer value
%schar *char *Use default converter or specified converter from fopen
%ccharcharUse default converter or specified converter from fopen
When width is specified for scanf, this acts like a non-NULL-terminated char * string.
By default, only one char is written.
%SUChar *UChar *Null terminated UTF-16 string
%CUCharUChar16-bit Unicode code unit
When width is specified for scanf, this acts like a non-NULL-terminated UChar * string
By default, only one codepoint is written.
%[] UChar *Null terminated UTF-16 string which contains the filtered set of characters specified by the UnicodeSet
%%  Show a percent sign
Format modifiers
modifierformatstypecomments
%h%d, %i, %o, %xint16_tshort format
%h%uuint16_tshort format
%hcchar(Unimplemented) Use invariant converter
%hschar *(Unimplemented) Use invariant converter
%hCchar(Unimplemented) 8-bit Unicode code unit
%hSchar *(Unimplemented) Null terminated UTF-8 string
%l%d, %i, %o, %xint32_tlong format (no effect)
%l%uuint32_tlong format (no effect)
%lcN/A(Unimplemented) Reserved for future implementation
%lsN/A(Unimplemented) Reserved for future implementation
%lCUChar32(Unimplemented) 32-bit Unicode code unit
%lSUChar32 *(Unimplemented) Null terminated UTF-32 string
%ll%d, %i, %o, %xint64_tlong long format
%ll%uuint64_t(Unimplemented) long long format
%-allN/ALeft justify
%+%d, %i, %o, %x, %e, %f, %g, %E, %GN/AAlways show the plus or minus sign. Needs data for plus sign.
% %d, %i, %o, %x, %e, %f, %g, %E, %GN/AInstead of a "+" output a blank character for positive numbers.
%#%d, %i, %o, %x, %e, %f, %g, %E, %GN/APrecede octal value with 0, hex with 0x and show the decimal point for floats.
%nallN/AWidth of input/output. num is an actual number from 0 to some large number.
%.n%e, %f, %g, %E, %F, %GN/ASignificant digits precision. num is an actual number from 0 to some large number.
If * is used in printf, then the precision is passed in as an argument before the number to be formatted.
printf modifier %* int32_t Next argument after this one specifies the width scanf modifier %* N/A This field is scanned, but not stored

If you are using this C API instead of the ustream.h API for C++, you can use one of the following u_fprintf examples to display a UnicodeString.


    UFILE *out = u_finit(stdout, NULL, NULL);
    UnicodeString string1("string 1");
    UnicodeString string2("string 2");
    u_fprintf(out, "%S\n", string1.getTerminatedBuffer());
    u_fprintf(out, "%.*S\n", string2.length(), string2.getBuffer());
    u_fclose(out);
*/ /** * When an end of file is encountered, this value can be returned. * @see u_fgetc * @stable 3.0 */ #define U_EOF 0xFFFF /** Forward declaration of a Unicode-aware file @stable 3.0 */ typedef struct UFILE UFILE; /** * Enum for which direction of stream a transliterator applies to. * @see u_fsettransliterator * @stable ICU 3.0 */ typedef enum { U_READ = 1, U_WRITE = 2, U_READWRITE =3 /* == (U_READ | U_WRITE) */ } UFileDirection; /** * Open a UFILE. * A UFILE is a wrapper around a FILE* that is locale and codepage aware. * That is, data written to a UFILE will be formatted using the conventions * specified by that UFILE's Locale; this data will be in the character set * specified by that UFILE's codepage. * @param filename The name of the file to open. * @param perm The read/write permission for the UFILE; one of "r", "w", "rw" * @param locale The locale whose conventions will be used to format * and parse output. If this parameter is NULL, the default locale will * be used. * @param codepage The codepage in which data will be written to and * read from the file. If this paramter is NULL the system default codepage * will be used. * @return A new UFILE, or NULL if an error occurred. * @stable ICU 3.0 */ U_STABLE UFILE* U_EXPORT2 u_fopen(const char *filename, const char *perm, const char *locale, const char *codepage); /** * Open a UFILE on top of an existing FILE* stream. The FILE* stream * ownership remains with the caller. To have the UFILE take over * ownership and responsibility for the FILE* stream, use the * function u_fadopt. * @param f The FILE* to which this UFILE will attach and use. * @param locale The locale whose conventions will be used to format * and parse output. If this parameter is NULL, the default locale will * be used. * @param codepage The codepage in which data will be written to and * read from the file. If this paramter is NULL, data will be written and * read using the default codepage for locale, unless locale * is NULL, in which case the system default codepage will be used. * @return A new UFILE, or NULL if an error occurred. * @stable ICU 3.0 */ U_STABLE UFILE* U_EXPORT2 u_finit(FILE *f, const char *locale, const char *codepage); /** * Open a UFILE on top of an existing FILE* stream. The FILE* stream * ownership is transferred to the new UFILE. It will be closed when the * UFILE is closed. * @param f The FILE* which this UFILE will take ownership of. * @param locale The locale whose conventions will be used to format * and parse output. If this parameter is NULL, the default locale will * be used. * @param codepage The codepage in which data will be written to and * read from the file. If this paramter is NULL, data will be written and * read using the default codepage for locale, unless locale * is NULL, in which case the system default codepage will be used. * @return A new UFILE, or NULL if an error occurred. If an error occurs * the ownership of the FILE* stream remains with the caller. * @stable ICU 4.4 */ U_STABLE UFILE* U_EXPORT2 u_fadopt(FILE *f, const char *locale, const char *codepage); /** * Create a UFILE that can be used for localized formatting or parsing. * The u_sprintf and u_sscanf functions do not read or write numbers for a * specific locale. The ustdio.h file functions can be used on this UFILE. * The string is usable once u_fclose or u_fflush has been called on the * returned UFILE. * @param stringBuf The string used for reading or writing. * @param capacity The number of code units available for use in stringBuf * @param locale The locale whose conventions will be used to format * and parse output. If this parameter is NULL, the default locale will * be used. * @return A new UFILE, or NULL if an error occurred. * @stable ICU 3.0 */ U_STABLE UFILE* U_EXPORT2 u_fstropen(UChar *stringBuf, int32_t capacity, const char *locale); /** * Close a UFILE. Implies u_fflush first. * @param file The UFILE to close. * @stable ICU 3.0 * @see u_fflush */ U_STABLE void U_EXPORT2 u_fclose(UFILE *file); #if U_SHOW_CPLUSPLUS_API U_NAMESPACE_BEGIN /** * \class LocalUFILEPointer * "Smart pointer" class, closes a UFILE via u_fclose(). * For most methods see the LocalPointerBase base class. * * @see LocalPointerBase * @see LocalPointer * @stable ICU 4.4 */ U_DEFINE_LOCAL_OPEN_POINTER(LocalUFILEPointer, UFILE, u_fclose); U_NAMESPACE_END #endif /** * Tests if the UFILE is at the end of the file stream. * @param f The UFILE from which to read. * @return Returns TRUE after the first read operation that attempts to * read past the end of the file. It returns FALSE if the current position is * not end of file. * @stable ICU 3.0 */ U_STABLE UBool U_EXPORT2 u_feof(UFILE *f); /** * Flush output of a UFILE. Implies a flush of * converter/transliterator state. (That is, a logical break is * made in the output stream - for example if a different type of * output is desired.) The underlying OS level file is also flushed. * Note that for a stateful encoding, the converter may write additional * bytes to return the stream to default state. * @param file The UFILE to flush. * @stable ICU 3.0 */ U_STABLE void U_EXPORT2 u_fflush(UFILE *file); /** * Rewind the file pointer to the beginning of the file. * @param file The UFILE to rewind. * @stable ICU 3.0 */ U_STABLE void u_frewind(UFILE *file); /** * Get the FILE* associated with a UFILE. * @param f The UFILE * @return A FILE*, owned by the UFILE. The FILE must not be closed. * @stable ICU 3.0 */ U_STABLE FILE* U_EXPORT2 u_fgetfile(UFILE *f); #if !UCONFIG_NO_FORMATTING /** * Get the locale whose conventions are used to format and parse output. * This is the same locale passed in the preceding call tou_fsetlocale * or u_fopen. * @param file The UFILE to set. * @return The locale whose conventions are used to format and parse output. * @stable ICU 3.0 */ U_STABLE const char* U_EXPORT2 u_fgetlocale(UFILE *file); /** * Set the locale whose conventions will be used to format and parse output. * @param locale The locale whose conventions will be used to format * and parse output. * @param file The UFILE to query. * @return NULL if successful, otherwise a negative number. * @stable ICU 3.0 */ U_STABLE int32_t U_EXPORT2 u_fsetlocale(UFILE *file, const char *locale); #endif /** * Get the codepage in which data is written to and read from the UFILE. * This is the same codepage passed in the preceding call to * u_fsetcodepage or u_fopen. * @param file The UFILE to query. * @return The codepage in which data is written to and read from the UFILE, * or NULL if an error occurred. * @stable ICU 3.0 */ U_STABLE const char* U_EXPORT2 u_fgetcodepage(UFILE *file); /** * Set the codepage in which data will be written to and read from the UFILE. * All Unicode data written to the UFILE will be converted to this codepage * before it is written to the underlying FILE*. It it generally a bad idea to * mix codepages within a file. This should only be called right * after opening the UFile, or after calling u_frewind. * @param codepage The codepage in which data will be written to * and read from the file. For example "latin-1" or "ibm-943". * A value of NULL means the default codepage for the UFILE's current * locale will be used. * @param file The UFILE to set. * @return 0 if successful, otherwise a negative number. * @see u_frewind * @stable ICU 3.0 */ U_STABLE int32_t U_EXPORT2 u_fsetcodepage(const char *codepage, UFILE *file); /** * Returns an alias to the converter being used for this file. * @param f The UFILE to get the value from * @return alias to the converter * @stable ICU 3.0 */ U_STABLE UConverter* U_EXPORT2 u_fgetConverter(UFILE *f); #if !UCONFIG_NO_FORMATTING /* Output functions */ /** * Write formatted data to stdout. * @param patternSpecification A pattern specifying how u_printf will * interpret the variable arguments received and format the data. * @return The number of Unicode characters written to stdout * @draft ICU 49 */ U_DRAFT int32_t U_EXPORT2 u_printf(const char *patternSpecification, ... ); /** * Write formatted data to a UFILE. * @param f The UFILE to which to write. * @param patternSpecification A pattern specifying how u_fprintf will * interpret the variable arguments received and format the data. * @return The number of Unicode characters written to f. * @stable ICU 3.0 */ U_STABLE int32_t U_EXPORT2 u_fprintf(UFILE *f, const char *patternSpecification, ... ); /** * Write formatted data to a UFILE. * This is identical to u_fprintf, except that it will * not call va_start and va_end. * @param f The UFILE to which to write. * @param patternSpecification A pattern specifying how u_fprintf will * interpret the variable arguments received and format the data. * @param ap The argument list to use. * @return The number of Unicode characters written to f. * @see u_fprintf * @stable ICU 3.0 */ U_STABLE int32_t U_EXPORT2 u_vfprintf(UFILE *f, const char *patternSpecification, va_list ap); /** * Write formatted data to stdout. * @param patternSpecification A pattern specifying how u_printf_u will * interpret the variable arguments received and format the data. * @return The number of Unicode characters written to stdout * @draft ICU 49 */ U_DRAFT int32_t U_EXPORT2 u_printf_u(const UChar *patternSpecification, ... ); /** * Get a UFILE for stdout. * @return UFILE that writes to stdout * @draft ICU 49 */ U_DRAFT UFILE * U_EXPORT2 u_get_stdout(void); /** * Write formatted data to a UFILE. * @param f The UFILE to which to write. * @param patternSpecification A pattern specifying how u_fprintf will * interpret the variable arguments received and format the data. * @return The number of Unicode characters written to f. * @stable ICU 3.0 */ U_STABLE int32_t U_EXPORT2 u_fprintf_u(UFILE *f, const UChar *patternSpecification, ... ); /** * Write formatted data to a UFILE. * This is identical to u_fprintf_u, except that it will * not call va_start and va_end. * @param f The UFILE to which to write. * @param patternSpecification A pattern specifying how u_fprintf will * interpret the variable arguments received and format the data. * @param ap The argument list to use. * @return The number of Unicode characters written to f. * @see u_fprintf_u * @stable ICU 3.0 */ U_STABLE int32_t U_EXPORT2 u_vfprintf_u(UFILE *f, const UChar *patternSpecification, va_list ap); #endif /** * Write a Unicode to a UFILE. The null (U+0000) terminated UChar* * s will be written to f, excluding the NULL terminator. * A newline will be added to f. * @param s The UChar* to write. * @param f The UFILE to which to write. * @return A non-negative number if successful, EOF otherwise. * @see u_file_write * @stable ICU 3.0 */ U_STABLE int32_t U_EXPORT2 u_fputs(const UChar *s, UFILE *f); /** * Write a UChar to a UFILE. * @param uc The UChar to write. * @param f The UFILE to which to write. * @return The character written if successful, EOF otherwise. * @stable ICU 3.0 */ U_STABLE UChar32 U_EXPORT2 u_fputc(UChar32 uc, UFILE *f); /** * Write Unicode to a UFILE. * The ustring passed in will be converted to the UFILE's underlying * codepage before it is written. * @param ustring A pointer to the Unicode data to write. * @param count The number of Unicode characters to write * @param f The UFILE to which to write. * @return The number of Unicode characters written. * @see u_fputs * @stable ICU 3.0 */ U_STABLE int32_t U_EXPORT2 u_file_write(const UChar *ustring, int32_t count, UFILE *f); /* Input functions */ #if !UCONFIG_NO_FORMATTING /** * Read formatted data from a UFILE. * @param f The UFILE from which to read. * @param patternSpecification A pattern specifying how u_fscanf will * interpret the variable arguments received and parse the data. * @return The number of items successfully converted and assigned, or EOF * if an error occurred. * @stable ICU 3.0 */ U_STABLE int32_t U_EXPORT2 u_fscanf(UFILE *f, const char *patternSpecification, ... ); /** * Read formatted data from a UFILE. * This is identical to u_fscanf, except that it will * not call va_start and va_end. * @param f The UFILE from which to read. * @param patternSpecification A pattern specifying how u_fscanf will * interpret the variable arguments received and parse the data. * @param ap The argument list to use. * @return The number of items successfully converted and assigned, or EOF * if an error occurred. * @see u_fscanf * @stable ICU 3.0 */ U_STABLE int32_t U_EXPORT2 u_vfscanf(UFILE *f, const char *patternSpecification, va_list ap); /** * Read formatted data from a UFILE. * @param f The UFILE from which to read. * @param patternSpecification A pattern specifying how u_fscanf will * interpret the variable arguments received and parse the data. * @return The number of items successfully converted and assigned, or EOF * if an error occurred. * @stable ICU 3.0 */ U_STABLE int32_t U_EXPORT2 u_fscanf_u(UFILE *f, const UChar *patternSpecification, ... ); /** * Read formatted data from a UFILE. * This is identical to u_fscanf_u, except that it will * not call va_start and va_end. * @param f The UFILE from which to read. * @param patternSpecification A pattern specifying how u_fscanf will * interpret the variable arguments received and parse the data. * @param ap The argument list to use. * @return The number of items successfully converted and assigned, or EOF * if an error occurred. * @see u_fscanf_u * @stable ICU 3.0 */ U_STABLE int32_t U_EXPORT2 u_vfscanf_u(UFILE *f, const UChar *patternSpecification, va_list ap); #endif /** * Read one line of text into a UChar* string from a UFILE. The newline * at the end of the line is read into the string. The string is always * null terminated * @param f The UFILE from which to read. * @param n The maximum number of characters - 1 to read. * @param s The UChar* to receive the read data. Characters will be * stored successively in s until a newline or EOF is * reached. A null character (U+0000) will be appended to s. * @return A pointer to s, or NULL if no characters were available. * @stable ICU 3.0 */ U_STABLE UChar* U_EXPORT2 u_fgets(UChar *s, int32_t n, UFILE *f); /** * Read a UChar from a UFILE. It is recommended that u_fgetcx * used instead for proper parsing functions, but sometimes reading * code units is needed instead of codepoints. * * @param f The UFILE from which to read. * @return The UChar value read, or U+FFFF if no character was available. * @stable ICU 3.0 */ U_STABLE UChar U_EXPORT2 u_fgetc(UFILE *f); /** * Read a UChar32 from a UFILE. * * @param f The UFILE from which to read. * @return The UChar32 value read, or U_EOF if no character was * available, or U+FFFFFFFF if an ill-formed character was * encountered. * @see u_unescape() * @stable ICU 3.0 */ U_STABLE UChar32 U_EXPORT2 u_fgetcx(UFILE *f); /** * Unget a UChar from a UFILE. * If this function is not the first to operate on f after a call * to u_fgetc, the results are undefined. * If this function is passed a character that was not recieved from the * previous u_fgetc or u_fgetcx call, the results are undefined. * @param c The UChar to put back on the stream. * @param f The UFILE to receive c. * @return The UChar32 value put back if successful, U_EOF otherwise. * @stable ICU 3.0 */ U_STABLE UChar32 U_EXPORT2 u_fungetc(UChar32 c, UFILE *f); /** * Read Unicode from a UFILE. * Bytes will be converted from the UFILE's underlying codepage, with * subsequent conversion to Unicode. The data will not be NULL terminated. * @param chars A pointer to receive the Unicode data. * @param count The number of Unicode characters to read. * @param f The UFILE from which to read. * @return The number of Unicode characters read. * @stable ICU 3.0 */ U_STABLE int32_t U_EXPORT2 u_file_read(UChar *chars, int32_t count, UFILE *f); #if !UCONFIG_NO_TRANSLITERATION /** * Set a transliterator on the UFILE. The transliterator will be owned by the * UFILE. * @param file The UFILE to set transliteration on * @param adopt The UTransliterator to set. Can be NULL, which will * mean that no transliteration is used. * @param direction either U_READ, U_WRITE, or U_READWRITE - sets * which direction the transliterator is to be applied to. If * U_READWRITE, the "Read" transliteration will be in the inverse * direction. * @param status ICU error code. * @return The previously set transliterator, owned by the * caller. If U_READWRITE is specified, only the WRITE transliterator * is returned. In most cases, the caller should call utrans_close() * on the result of this function. * @stable ICU 3.0 */ U_STABLE UTransliterator* U_EXPORT2 u_fsettransliterator(UFILE *file, UFileDirection direction, UTransliterator *adopt, UErrorCode *status); #endif /* Output string functions */ #if !UCONFIG_NO_FORMATTING /** * Write formatted data to a Unicode string. * * @param buffer The Unicode String to which to write. * @param patternSpecification A pattern specifying how u_sprintf will * interpret the variable arguments received and format the data. * @return The number of Unicode code units written to buffer. This * does not include the terminating null character. * @stable ICU 3.0 */ U_STABLE int32_t U_EXPORT2 u_sprintf(UChar *buffer, const char *patternSpecification, ... ); /** * Write formatted data to a Unicode string. When the number of code units * required to store the data exceeds count, then count code * units of data are stored in buffer and a negative value is * returned. When the number of code units required to store the data equals * count, the string is not null terminated and count is * returned. * * @param buffer The Unicode String to which to write. * @param count The number of code units to read. * @param patternSpecification A pattern specifying how u_sprintf will * interpret the variable arguments received and format the data. * @return The number of Unicode characters that would have been written to * buffer had count been sufficiently large. This does not include * the terminating null character. * @stable ICU 3.0 */ U_STABLE int32_t U_EXPORT2 u_snprintf(UChar *buffer, int32_t count, const char *patternSpecification, ... ); /** * Write formatted data to a Unicode string. * This is identical to u_sprintf, except that it will * not call va_start and va_end. * * @param buffer The Unicode string to which to write. * @param patternSpecification A pattern specifying how u_sprintf will * interpret the variable arguments received and format the data. * @param ap The argument list to use. * @return The number of Unicode characters written to buffer. * @see u_sprintf * @stable ICU 3.0 */ U_STABLE int32_t U_EXPORT2 u_vsprintf(UChar *buffer, const char *patternSpecification, va_list ap); /** * Write formatted data to a Unicode string. * This is identical to u_snprintf, except that it will * not call va_start and va_end.

* When the number of code units required to store the data exceeds * count, then count code units of data are stored in * buffer and a negative value is returned. When the number of code * units required to store the data equals count, the string is not * null terminated and count is returned. * * @param buffer The Unicode string to which to write. * @param count The number of code units to read. * @param patternSpecification A pattern specifying how u_sprintf will * interpret the variable arguments received and format the data. * @param ap The argument list to use. * @return The number of Unicode characters that would have been written to * buffer had count been sufficiently large. * @see u_sprintf * @stable ICU 3.0 */ U_STABLE int32_t U_EXPORT2 u_vsnprintf(UChar *buffer, int32_t count, const char *patternSpecification, va_list ap); /** * Write formatted data to a Unicode string. * * @param buffer The Unicode string to which to write. * @param patternSpecification A pattern specifying how u_sprintf will * interpret the variable arguments received and format the data. * @return The number of Unicode characters written to buffer. * @stable ICU 3.0 */ U_STABLE int32_t U_EXPORT2 u_sprintf_u(UChar *buffer, const UChar *patternSpecification, ... ); /** * Write formatted data to a Unicode string. When the number of code units * required to store the data exceeds count, then count code * units of data are stored in buffer and a negative value is * returned. When the number of code units required to store the data equals * count, the string is not null terminated and count is * returned. * * @param buffer The Unicode string to which to write. * @param count The number of code units to read. * @param patternSpecification A pattern specifying how u_sprintf will * interpret the variable arguments received and format the data. * @return The number of Unicode characters that would have been written to * buffer had count been sufficiently large. * @stable ICU 3.0 */ U_STABLE int32_t U_EXPORT2 u_snprintf_u(UChar *buffer, int32_t count, const UChar *patternSpecification, ... ); /** * Write formatted data to a Unicode string. * This is identical to u_sprintf_u, except that it will * not call va_start and va_end. * * @param buffer The Unicode string to which to write. * @param patternSpecification A pattern specifying how u_sprintf will * interpret the variable arguments received and format the data. * @param ap The argument list to use. * @return The number of Unicode characters written to f. * @see u_sprintf_u * @stable ICU 3.0 */ U_STABLE int32_t U_EXPORT2 u_vsprintf_u(UChar *buffer, const UChar *patternSpecification, va_list ap); /** * Write formatted data to a Unicode string. * This is identical to u_snprintf_u, except that it will * not call va_start and va_end. * When the number of code units required to store the data exceeds * count, then count code units of data are stored in * buffer and a negative value is returned. When the number of code * units required to store the data equals count, the string is not * null terminated and count is returned. * * @param buffer The Unicode string to which to write. * @param count The number of code units to read. * @param patternSpecification A pattern specifying how u_sprintf will * interpret the variable arguments received and format the data. * @param ap The argument list to use. * @return The number of Unicode characters that would have been written to * f had count been sufficiently large. * @see u_sprintf_u * @stable ICU 3.0 */ U_STABLE int32_t U_EXPORT2 u_vsnprintf_u(UChar *buffer, int32_t count, const UChar *patternSpecification, va_list ap); /* Input string functions */ /** * Read formatted data from a Unicode string. * * @param buffer The Unicode string from which to read. * @param patternSpecification A pattern specifying how u_sscanf will * interpret the variable arguments received and parse the data. * @return The number of items successfully converted and assigned, or EOF * if an error occurred. * @stable ICU 3.0 */ U_STABLE int32_t U_EXPORT2 u_sscanf(const UChar *buffer, const char *patternSpecification, ... ); /** * Read formatted data from a Unicode string. * This is identical to u_sscanf, except that it will * not call va_start and va_end. * * @param buffer The Unicode string from which to read. * @param patternSpecification A pattern specifying how u_sscanf will * interpret the variable arguments received and parse the data. * @param ap The argument list to use. * @return The number of items successfully converted and assigned, or EOF * if an error occurred. * @see u_sscanf * @stable ICU 3.0 */ U_STABLE int32_t U_EXPORT2 u_vsscanf(const UChar *buffer, const char *patternSpecification, va_list ap); /** * Read formatted data from a Unicode string. * * @param buffer The Unicode string from which to read. * @param patternSpecification A pattern specifying how u_sscanf will * interpret the variable arguments received and parse the data. * @return The number of items successfully converted and assigned, or EOF * if an error occurred. * @stable ICU 3.0 */ U_STABLE int32_t U_EXPORT2 u_sscanf_u(const UChar *buffer, const UChar *patternSpecification, ... ); /** * Read formatted data from a Unicode string. * This is identical to u_sscanf_u, except that it will * not call va_start and va_end. * * @param buffer The Unicode string from which to read. * @param patternSpecification A pattern specifying how u_sscanf will * interpret the variable arguments received and parse the data. * @param ap The argument list to use. * @return The number of items successfully converted and assigned, or EOF * if an error occurred. * @see u_sscanf_u * @stable ICU 3.0 */ U_STABLE int32_t U_EXPORT2 u_vsscanf_u(const UChar *buffer, const UChar *patternSpecification, va_list ap); #endif #endif