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Direktori : /opt/alt/libicu/usr/share/doc/alt-libicu-devel/samples/numfmt/ |
Current File : //opt/alt/libicu/usr/share/doc/alt-libicu-devel/samples/numfmt/capi.c |
/******************************************************************** * © 2016 and later: Unicode, Inc. and others. * License & terms of use: http://www.unicode.org/copyright.html#License ************************************************************************* ************************************************************************* * COPYRIGHT: * Copyright (c) 1999-2002, International Business Machines Corporation and * others. All Rights Reserved. *************************************************************************/ #include "unicode/unum.h" #include "unicode/ustring.h" #include <stdio.h> #include <stdlib.h> static void uprintf(const UChar* str) { char buf[256]; u_austrcpy(buf, str); printf("%s", buf); } void capi() { UNumberFormat *fmt; UErrorCode status = U_ZERO_ERROR; /* The string "987654321.123" as UChars */ UChar str[] = { 0x39, 0x38, 0x37, 0x36, 0x35, 0x34, 0x33, 0x32, 0x31, 0x30, 0x2E, 0x31, 0x32, 0x33, 0 }; UChar buf[256]; int32_t needed; double a; /* Create a formatter for the US locale */ fmt = unum_open( UNUM_DECIMAL, /* style */ 0, /* pattern */ 0, /* patternLength */ "en_US", /* locale */ 0, /* parseErr */ &status); if (U_FAILURE(status)) { printf("FAIL: unum_open\n"); exit(1); } /* Use the formatter to parse a number. When using the C API, we have to specify whether we want a double or a long in advance. We pass in NULL for the position pointer in order to get the default behavior which is to parse from the start. */ a = unum_parseDouble(fmt, str, u_strlen(str), NULL, &status); if (U_FAILURE(status)) { printf("FAIL: unum_parseDouble\n"); exit(1); } /* Show the result */ printf("unum_parseDouble(\""); uprintf(str); printf("\") => %g\n", a); /* Use the formatter to format the same number back into a string in the US locale. The return value is the buffer size needed. We're pretty sure we have enough space, but in a production application one would check this value. We pass in NULL for the UFieldPosition pointer because we don't care to receive that data. */ needed = unum_formatDouble(fmt, a, buf, 256, NULL, &status); if (U_FAILURE(status)) { printf("FAIL: format_parseDouble\n"); exit(1); } /* Show the result */ printf("unum_formatDouble(%g) => \"", a); uprintf(buf); printf("\"\n"); /* Release the storage used by the formatter */ unum_close(fmt); }