949 lines
36 KiB
C
949 lines
36 KiB
C
/*
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******************************************************************************
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*
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* Copyright (C) 1998-2010, International Business Machines
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* Corporation and others. All Rights Reserved.
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*
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******************************************************************************
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*
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* File ustdio.h
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*
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* Modification History:
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*
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* Date Name Description
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* 10/16/98 stephen Creation.
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* 11/06/98 stephen Modified per code review.
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* 03/12/99 stephen Modified for new C API.
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* 07/19/99 stephen Minor doc update.
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* 02/01/01 george Added sprintf & sscanf with all of its variants
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******************************************************************************
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*/
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#ifndef USTDIO_H
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#define USTDIO_H
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#include <stdio.h>
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#include <stdarg.h>
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#include "unicode/utypes.h"
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#include "unicode/ucnv.h"
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#include "unicode/utrans.h"
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#include "unicode/localpointer.h"
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/*
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TODO
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The following is a small list as to what is currently wrong/suggestions for
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ustdio.
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* Make sure that * in the scanf format specification works for all formats.
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* Each UFILE takes up at least 2KB.
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Look into adding setvbuf() for configurable buffers.
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* This library does buffering. The OS should do this for us already. Check on
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this, and remove it from this library, if this is the case. Double buffering
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wastes a lot of time and space.
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* Test stdin and stdout with the u_f* functions
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* Testing should be done for reading and writing multi-byte encodings,
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and make sure that a character that is contained across buffer boundries
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works even for incomplete characters.
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* Make sure that the last character is flushed when the file/string is closed.
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* snprintf should follow the C99 standard for the return value, which is
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return the number of characters (excluding the trailing '\0')
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which would have been written to the destination string regardless
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of available space. This is like pre-flighting.
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* Everything that uses %s should do what operator>> does for UnicodeString.
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It should convert one byte at a time, and once a character is
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converted then check to see if it's whitespace or in the scanset.
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If it's whitespace or in the scanset, put all the bytes back (do nothing
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for sprintf/sscanf).
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* If bad string data is encountered, make sure that the function fails
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without memory leaks and the unconvertable characters are valid
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substitution or are escaped characters.
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* u_fungetc() can't unget a character when it's at the beginning of the
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internal conversion buffer. For example, read the buffer size # of
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characters, and then ungetc to get the previous character that was
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at the end of the last buffer.
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* u_fflush() and u_fclose should return an int32_t like C99 functions.
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0 is returned if the operation was successful and EOF otherwise.
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* u_fsettransliterator does not support U_READ side of transliteration.
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* The format specifier should limit the size of a format or honor it in
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order to prevent buffer overruns. (e.g. %256.256d).
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* u_fread and u_fwrite don't exist. They're needed for reading and writing
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data structures without any conversion.
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* u_file_read and u_file_write are used for writing strings. u_fgets and
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u_fputs or u_fread and u_fwrite should be used to do this.
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* The width parameter for all scanf formats, including scanset, needs
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better testing. This prevents buffer overflows.
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* Figure out what is suppose to happen when a codepage is changed midstream.
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Maybe a flush or a rewind are good enough.
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* Make sure that a UFile opened with "rw" can be used after using
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u_fflush with a u_frewind.
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* scanf(%i) should detect what type of number to use.
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* Add more testing of the alternate format, %#
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* Look at newline handling of fputs/puts
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* Think more about codeunit/codepoint error handling/support in %S,%s,%C,%c,%[]
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* Complete the file documentation with proper doxygen formatting.
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See http://oss.software.ibm.com/pipermail/icu/2003-July/005647.html
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*/
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/**
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* \file
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* \brief C API: Unicode stdio-like API
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*
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* <h2>Unicode stdio-like C API</h2>
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*
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* <p>This API provides an stdio-like API wrapper around ICU's other
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* formatting and parsing APIs. It is meant to ease the transition of adding
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* Unicode support to a preexisting applications using stdio. The following
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* is a small list of noticable differences between stdio and ICU I/O's
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* ustdio implementation.</p>
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*
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* <ul>
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* <li>Locale specific formatting and parsing is only done with file IO.</li>
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* <li>u_fstropen can be used to simulate file IO with strings.
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* This is similar to the iostream API, and it allows locale specific
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* formatting and parsing to be used.</li>
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* <li>This API provides uniform formatting and parsing behavior between
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* platforms (unlike the standard stdio implementations found on various
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* platforms).</li>
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* <li>This API is better suited for text data handling than binary data
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* handling when compared to the typical stdio implementation.</li>
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* <li>You can specify a Transliterator while using the file IO.</li>
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* <li>You can specify a file's codepage separately from the default
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* system codepage.</li>
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* </ul>
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*
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* <h2>Formatting and Parsing Specification</h2>
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*
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* General printf format:<br>
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* %[format modifier][width][.precision][type modifier][format]
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*
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* General scanf format:<br>
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* %[*][format modifier][width][type modifier][format]
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*
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<table cellspacing="3">
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<tr><td>format</td><td>default<br>printf<br>type</td><td>default<br>scanf<br>type</td><td>description</td></tr>
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<tr><td>%E</td><td>double</td><td>float</td><td>Scientific with an uppercase exponent</td></tr>
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<tr><td>%e</td><td>double</td><td>float</td><td>Scientific with a lowercase exponent</td></tr>
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<tr><td>%G</td><td>double</td><td>float</td><td>Use %E or %f for best format</td></tr>
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<tr><td>%g</td><td>double</td><td>float</td><td>Use %e or %f for best format</td></tr>
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<tr><td>%f</td><td>double</td><td>float</td><td>Simple floating point without the exponent</td></tr>
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<tr><td>%X</td><td>int32_t</td><td>int32_t</td><td>ustdio special uppercase hex radix formatting</td></tr>
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<tr><td>%x</td><td>int32_t</td><td>int32_t</td><td>ustdio special lowercase hex radix formatting</td></tr>
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<tr><td>%d</td><td>int32_t</td><td>int32_t</td><td>Decimal format</td></tr>
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<tr><td>%i</td><td>int32_t</td><td>int32_t</td><td>Same as %d</td></tr>
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<tr><td>%n</td><td>int32_t</td><td>int32_t</td><td>count (write the number of UTF-16 codeunits read/written)</td></tr>
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<tr><td>%o</td><td>int32_t</td><td>int32_t</td><td>ustdio special octal radix formatting</td></tr>
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<tr><td>%u</td><td>uint32_t</td><td>uint32_t</td><td>Decimal format</td></tr>
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<tr><td>%p</td><td>void *</td><td>void *</td><td>Prints the pointer value</td></tr>
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<tr><td>%s</td><td>char *</td><td>char *</td><td>Use default converter or specified converter from fopen</td></tr>
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<tr><td>%c</td><td>char</td><td>char</td><td>Use default converter or specified converter from fopen<br>
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When width is specified for scanf, this acts like a non-NULL-terminated char * string.<br>
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By default, only one char is written.</td></tr>
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<tr><td>%S</td><td>UChar *</td><td>UChar *</td><td>Null terminated UTF-16 string</td></tr>
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<tr><td>%C</td><td>UChar</td><td>UChar</td><td>16-bit Unicode code unit<br>
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When width is specified for scanf, this acts like a non-NULL-terminated UChar * string<br>
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By default, only one codepoint is written.</td></tr>
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<tr><td>%[]</td><td> </td><td>UChar *</td><td>Null terminated UTF-16 string which contains the filtered set of characters specified by the UnicodeSet</td></tr>
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<tr><td>%%</td><td> </td><td> </td><td>Show a percent sign</td></tr>
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</table>
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Format modifiers
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<table>
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<tr><td>modifier</td><td>formats</td><td>type</td><td>comments</td></tr>
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<tr><td>%h</td><td>%d, %i, %o, %x</td><td>int16_t</td><td>short format</td></tr>
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<tr><td>%h</td><td>%u</td><td>uint16_t</td><td>short format</td></tr>
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<tr><td>%h</td><td>c</td><td>char</td><td><b>(Unimplemented)</b> Use invariant converter</td></tr>
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<tr><td>%h</td><td>s</td><td>char *</td><td><b>(Unimplemented)</b> Use invariant converter</td></tr>
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<tr><td>%h</td><td>C</td><td>char</td><td><b>(Unimplemented)</b> 8-bit Unicode code unit</td></tr>
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<tr><td>%h</td><td>S</td><td>char *</td><td><b>(Unimplemented)</b> Null terminated UTF-8 string</td></tr>
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<tr><td>%l</td><td>%d, %i, %o, %x</td><td>int32_t</td><td>long format (no effect)</td></tr>
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<tr><td>%l</td><td>%u</td><td>uint32_t</td><td>long format (no effect)</td></tr>
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<tr><td>%l</td><td>c</td><td>N/A</td><td><b>(Unimplemented)</b> Reserved for future implementation</td></tr>
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<tr><td>%l</td><td>s</td><td>N/A</td><td><b>(Unimplemented)</b> Reserved for future implementation</td></tr>
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<tr><td>%l</td><td>C</td><td>UChar32</td><td><b>(Unimplemented)</b> 32-bit Unicode code unit</td></tr>
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<tr><td>%l</td><td>S</td><td>UChar32 *</td><td><b>(Unimplemented)</b> Null terminated UTF-32 string</td></tr>
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<tr><td>%ll</td><td>%d, %i, %o, %x</td><td>int64_t</td><td>long long format</td></tr>
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<tr><td>%ll</td><td>%u</td><td>uint64_t</td><td><b>(Unimplemented)</b> long long format</td></tr>
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<tr><td>%-</td><td><i>all</i></td><td>N/A</td><td>Left justify</td></tr>
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<tr><td>%+</td><td>%d, %i, %o, %x, %e, %f, %g, %E, %G</td><td>N/A</td><td>Always show the plus or minus sign. Needs data for plus sign.</td></tr>
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<tr><td>% </td><td>%d, %i, %o, %x, %e, %f, %g, %E, %G</td><td>N/A</td><td>Instead of a "+" output a blank character for positive numbers.</td></tr>
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<tr><td>%#</td><td>%d, %i, %o, %x, %e, %f, %g, %E, %G</td><td>N/A</td><td>Precede octal value with 0, hex with 0x and show the
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decimal point for floats.</td></tr>
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<tr><td>%<i>n</i></td><td><i>all</i></td><td>N/A</td><td>Width of input/output. num is an actual number from 0 to
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some large number.</td></tr>
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<tr><td>%.<i>n</i></td><td>%e, %f, %g, %E, %F, %G</td><td>N/A</td><td>Significant digits precision. num is an actual number from
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0 to some large number.<br>If * is used in printf, then the precision is passed in as an argument before the number to be formatted.</td></tr>
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</table>
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printf modifier
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%* int32_t Next argument after this one specifies the width
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scanf modifier
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%* N/A This field is scanned, but not stored
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<p>If you are using this C API instead of the ustream.h API for C++,
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you can use one of the following u_fprintf examples to display a UnicodeString.</p>
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<pre><code>
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UFILE *out = u_finit(stdout, NULL, NULL);
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UnicodeString string1("string 1");
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UnicodeString string2("string 2");
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u_fprintf(out, "%S\n", string1.getTerminatedBuffer());
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u_fprintf(out, "%.*S\n", string2.length(), string2.getBuffer());
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u_fclose(out);
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</code></pre>
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*/
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/**
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* When an end of file is encountered, this value can be returned.
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* @see u_fgetc
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* @stable 3.0
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*/
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#define U_EOF 0xFFFF
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/** Forward declaration of a Unicode-aware file @stable 3.0 */
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typedef struct UFILE UFILE;
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/**
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* Enum for which direction of stream a transliterator applies to.
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* @see u_fsettransliterator
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* @stable ICU 3.0
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*/
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typedef enum {
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U_READ = 1,
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U_WRITE = 2,
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U_READWRITE =3 /* == (U_READ | U_WRITE) */
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} UFileDirection;
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/**
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* Open a UFILE.
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* A UFILE is a wrapper around a FILE* that is locale and codepage aware.
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* That is, data written to a UFILE will be formatted using the conventions
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* specified by that UFILE's Locale; this data will be in the character set
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* specified by that UFILE's codepage.
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* @param filename The name of the file to open.
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* @param perm The read/write permission for the UFILE; one of "r", "w", "rw"
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* @param locale The locale whose conventions will be used to format
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* and parse output. If this parameter is NULL, the default locale will
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* be used.
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* @param codepage The codepage in which data will be written to and
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* read from the file. If this paramter is NULL the system default codepage
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* will be used.
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* @return A new UFILE, or NULL if an error occurred.
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* @stable ICU 3.0
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*/
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U_STABLE UFILE* U_EXPORT2
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u_fopen(const char *filename,
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const char *perm,
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const char *locale,
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const char *codepage);
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/**
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* Open a UFILE on top of an existing FILE* stream. The FILE* stream
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* ownership remains with the caller. To have the UFILE take over
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* ownership and responsibility for the FILE* stream, use the
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* function u_fadopt.
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* @param f The FILE* to which this UFILE will attach and use.
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* @param locale The locale whose conventions will be used to format
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* and parse output. If this parameter is NULL, the default locale will
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* be used.
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* @param codepage The codepage in which data will be written to and
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* read from the file. If this paramter is NULL, data will be written and
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* read using the default codepage for <TT>locale</TT>, unless <TT>locale</TT>
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* is NULL, in which case the system default codepage will be used.
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* @return A new UFILE, or NULL if an error occurred.
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* @stable ICU 3.0
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*/
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U_STABLE UFILE* U_EXPORT2
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u_finit(FILE *f,
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const char *locale,
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const char *codepage);
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/**
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* Open a UFILE on top of an existing FILE* stream. The FILE* stream
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* ownership is transferred to the new UFILE. It will be closed when the
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* UFILE is closed.
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* @param f The FILE* which this UFILE will take ownership of.
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* @param locale The locale whose conventions will be used to format
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* and parse output. If this parameter is NULL, the default locale will
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* be used.
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* @param codepage The codepage in which data will be written to and
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* read from the file. If this paramter is NULL, data will be written and
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* read using the default codepage for <TT>locale</TT>, unless <TT>locale</TT>
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* is NULL, in which case the system default codepage will be used.
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* @return A new UFILE, or NULL if an error occurred. If an error occurs
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* the ownership of the FILE* stream remains with the caller.
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* @draft ICU 4.4
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*/
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U_DRAFT UFILE* U_EXPORT2
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u_fadopt(FILE *f,
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const char *locale,
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const char *codepage);
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/**
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* Create a UFILE that can be used for localized formatting or parsing.
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* The u_sprintf and u_sscanf functions do not read or write numbers for a
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* specific locale. The ustdio.h file functions can be used on this UFILE.
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* The string is usable once u_fclose or u_fflush has been called on the
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* returned UFILE.
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* @param stringBuf The string used for reading or writing.
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* @param capacity The number of code units available for use in stringBuf
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* @param locale The locale whose conventions will be used to format
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* and parse output. If this parameter is NULL, the default locale will
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* be used.
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* @return A new UFILE, or NULL if an error occurred.
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* @stable ICU 3.0
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*/
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U_STABLE UFILE* U_EXPORT2
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u_fstropen(UChar *stringBuf,
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int32_t capacity,
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const char *locale);
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/**
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* Close a UFILE.
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* @param file The UFILE to close.
|
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* @stable ICU 3.0
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*/
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U_STABLE void U_EXPORT2
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u_fclose(UFILE *file);
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#if U_SHOW_CPLUSPLUS_API
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U_NAMESPACE_BEGIN
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/**
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|
* \class LocalUFILEPointer
|
|
* "Smart pointer" class, closes a UFILE via u_fclose().
|
|
* For most methods see the LocalPointerBase base class.
|
|
*
|
|
* @see LocalPointerBase
|
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* @see LocalPointer
|
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* @draft ICU 4.4
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*/
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U_DEFINE_LOCAL_OPEN_POINTER(LocalUFILEPointer, UFILE, u_fclose);
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U_NAMESPACE_END
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#endif
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|
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/**
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* 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
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* not end of file.
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* @stable ICU 3.0
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*/
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U_STABLE UBool U_EXPORT2
|
|
u_feof(UFILE *f);
|
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|
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/**
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|
* Flush output of a UFILE. Implies a flush of
|
|
* converter/transliterator state. (That is, a logical break is
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|
* made in the output stream - for example if a different type of
|
|
* output is desired.) The underlying OS level file is also flushed.
|
|
* @param file The UFILE to flush.
|
|
* @stable ICU 3.0
|
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*/
|
|
U_STABLE void U_EXPORT2
|
|
u_fflush(UFILE *file);
|
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|
|
/**
|
|
* Rewind the file pointer to the beginning of the file.
|
|
* @param file The UFILE to rewind.
|
|
* @stable ICU 3.0
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*/
|
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U_STABLE void
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u_frewind(UFILE *file);
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/**
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* Get the FILE* associated with a UFILE.
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* @param f The UFILE
|
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* @return A FILE*, owned by the UFILE. The FILE <EM>must not</EM> be closed.
|
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* @stable ICU 3.0
|
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*/
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U_STABLE FILE* U_EXPORT2
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u_fgetfile(UFILE *f);
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|
|
|
#if !UCONFIG_NO_FORMATTING
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/**
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|
* Get the locale whose conventions are used to format and parse output.
|
|
* This is the same locale passed in the preceding call to<TT>u_fsetlocale</TT>
|
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* or <TT>u_fopen</TT>.
|
|
* @param file The UFILE to set.
|
|
* @return The locale whose conventions are used to format and parse output.
|
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* @stable ICU 3.0
|
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*/
|
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U_STABLE const char* U_EXPORT2
|
|
u_fgetlocale(UFILE *file);
|
|
|
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/**
|
|
* 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
|
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*/
|
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U_STABLE int32_t U_EXPORT2
|
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u_fsetlocale(UFILE *file,
|
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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
|
|
* <TT>u_fsetcodepage</TT> or <TT>u_fopen</TT>.
|
|
* @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 <TT>UFile</TT>, or after calling <TT>u_frewind</TT>.
|
|
* @param codepage The codepage in which data will be written to
|
|
* and read from the file. For example <TT>"latin-1"</TT> or <TT>"ibm-943</TT>.
|
|
* 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 a UFILE.
|
|
* @param f The UFILE to which to write.
|
|
* @param patternSpecification A pattern specifying how <TT>u_fprintf</TT> will
|
|
* interpret the variable arguments received and format the data.
|
|
* @return The number of Unicode characters written to <TT>f</TT>.
|
|
* @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 <TT>u_fprintf</TT>, except that it will
|
|
* <EM>not</EM> call <TT>va_start</TT> and <TT>va_end</TT>.
|
|
* @param f The UFILE to which to write.
|
|
* @param patternSpecification A pattern specifying how <TT>u_fprintf</TT> 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 <TT>f</TT>.
|
|
* @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 a UFILE.
|
|
* @param f The UFILE to which to write.
|
|
* @param patternSpecification A pattern specifying how <TT>u_fprintf</TT> will
|
|
* interpret the variable arguments received and format the data.
|
|
* @return The number of Unicode characters written to <TT>f</TT>.
|
|
* @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 <TT>u_fprintf_u</TT>, except that it will
|
|
* <EM>not</EM> call <TT>va_start</TT> and <TT>va_end</TT>.
|
|
* @param f The UFILE to which to write.
|
|
* @param patternSpecification A pattern specifying how <TT>u_fprintf</TT> 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 <TT>f</TT>.
|
|
* @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*
|
|
* <TT>s</TT> will be written to <TT>f</TT>, excluding the NULL terminator.
|
|
* A newline will be added to <TT>f</TT>.
|
|
* @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 <TT>u_fscanf</TT> 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 <TT>u_fscanf</TT>, except that it will
|
|
* <EM>not</EM> call <TT>va_start</TT> and <TT>va_end</TT>.
|
|
* @param f The UFILE from which to read.
|
|
* @param patternSpecification A pattern specifying how <TT>u_fscanf</TT> 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 <TT>u_fscanf</TT> 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 <TT>u_fscanf_u</TT>, except that it will
|
|
* <EM>not</EM> call <TT>va_start</TT> and <TT>va_end</TT>.
|
|
* @param f The UFILE from which to read.
|
|
* @param patternSpecification A pattern specifying how <TT>u_fscanf</TT> 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 <TT>s</TT> until a newline or EOF is
|
|
* reached. A null character (U+0000) will be appended to <TT>s</TT>.
|
|
* @return A pointer to <TT>s</TT>, 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 <TT>u_fgetcx</TT>
|
|
* 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 <TT>f</TT> after a call
|
|
* to <TT>u_fgetc</TT>, the results are undefined.
|
|
* If this function is passed a character that was not recieved from the
|
|
* previous <TT>u_fgetc</TT> or <TT>u_fgetcx</TT> call, the results are undefined.
|
|
* @param c The UChar to put back on the stream.
|
|
* @param f The UFILE to receive <TT>c</TT>.
|
|
* @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 <TT>u_sprintf</TT> will
|
|
* interpret the variable arguments received and format the data.
|
|
* @return The number of Unicode code units written to <TT>buffer</TT>. 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 <TT>count</TT>, then <TT>count</TT> code
|
|
* units of data are stored in <TT>buffer</TT> and a negative value is
|
|
* returned. When the number of code units required to store the data equals
|
|
* <TT>count</TT>, the string is not null terminated and <TT>count</TT> 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 <TT>u_sprintf</TT> will
|
|
* interpret the variable arguments received and format the data.
|
|
* @return The number of Unicode characters that would have been written to
|
|
* <TT>buffer</TT> 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 <TT>u_sprintf</TT>, except that it will
|
|
* <EM>not</EM> call <TT>va_start</TT> and <TT>va_end</TT>.
|
|
*
|
|
* @param buffer The Unicode string to which to write.
|
|
* @param patternSpecification A pattern specifying how <TT>u_sprintf</TT> 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 <TT>buffer</TT>.
|
|
* @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 <TT>u_snprintf</TT>, except that it will
|
|
* <EM>not</EM> call <TT>va_start</TT> and <TT>va_end</TT>.<br><br>
|
|
* When the number of code units required to store the data exceeds
|
|
* <TT>count</TT>, then <TT>count</TT> code units of data are stored in
|
|
* <TT>buffer</TT> and a negative value is returned. When the number of code
|
|
* units required to store the data equals <TT>count</TT>, the string is not
|
|
* null terminated and <TT>count</TT> 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 <TT>u_sprintf</TT> 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
|
|
* <TT>buffer</TT> 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 <TT>u_sprintf</TT> will
|
|
* interpret the variable arguments received and format the data.
|
|
* @return The number of Unicode characters written to <TT>buffer</TT>.
|
|
* @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 <TT>count</TT>, then <TT>count</TT> code
|
|
* units of data are stored in <TT>buffer</TT> and a negative value is
|
|
* returned. When the number of code units required to store the data equals
|
|
* <TT>count</TT>, the string is not null terminated and <TT>count</TT> 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 <TT>u_sprintf</TT> will
|
|
* interpret the variable arguments received and format the data.
|
|
* @return The number of Unicode characters that would have been written to
|
|
* <TT>buffer</TT> 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 <TT>u_sprintf_u</TT>, except that it will
|
|
* <EM>not</EM> call <TT>va_start</TT> and <TT>va_end</TT>.
|
|
*
|
|
* @param buffer The Unicode string to which to write.
|
|
* @param patternSpecification A pattern specifying how <TT>u_sprintf</TT> 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 <TT>f</TT>.
|
|
* @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 <TT>u_snprintf_u</TT>, except that it will
|
|
* <EM>not</EM> call <TT>va_start</TT> and <TT>va_end</TT>.
|
|
* When the number of code units required to store the data exceeds
|
|
* <TT>count</TT>, then <TT>count</TT> code units of data are stored in
|
|
* <TT>buffer</TT> and a negative value is returned. When the number of code
|
|
* units required to store the data equals <TT>count</TT>, the string is not
|
|
* null terminated and <TT>count</TT> 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 <TT>u_sprintf</TT> 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
|
|
* <TT>f</TT> 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 <TT>u_sscanf</TT> 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 <TT>u_sscanf</TT>, except that it will
|
|
* <EM>not</EM> call <TT>va_start</TT> and <TT>va_end</TT>.
|
|
*
|
|
* @param buffer The Unicode string from which to read.
|
|
* @param patternSpecification A pattern specifying how <TT>u_sscanf</TT> 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 <TT>u_sscanf</TT> 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 <TT>u_sscanf_u</TT>, except that it will
|
|
* <EM>not</EM> call <TT>va_start</TT> and <TT>va_end</TT>.
|
|
*
|
|
* @param buffer The Unicode string from which to read.
|
|
* @param patternSpecification A pattern specifying how <TT>u_sscanf</TT> 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
|
|
|
|
|