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scuffed-code/icu4c/source/samples/ucnv/convsamp.cpp

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/**************************************************************************
*
* Copyright (C) 2000, International Business Machines
* Corporation and others. All Rights Reserved.
*
***************************************************************************
* file name: convsamp.c
* encoding: ASCII (7-bit)
*
* created on: 2000may30
* created by: Steven R. Loomis
*
* Sample code for the ICU conversion routines.
*
* Note: Nothing special is needed to build this sample. Link with
* the icu UC and icu I18N libraries.
*
* I use 'assert' for error checking, you probably will want
* something more flexible. '***BEGIN SAMPLE***' and
* '***END SAMPLE***' mark pieces suitable for stand alone
* code snippets.
*
*/
#include <stdio.h>
#include <ctype.h> /* for isspace, etc. */
#include <assert.h>
#include <string.h>
#include "unicode/utypes.h" /* Basic ICU data types */
#include "unicode/ucnv.h" /* C Converter API */
#include "unicode/convert.h" /* C++ Converter API */
#include "unicode/ustring.h" /* some more string fcns*/
#include "unicode/uloc.h"
#include "flagcb.h"
/* Some utility functions */
static const UChar kNone[] = { 0x0000 };
#define U_ASSERT(x) { if(U_FAILURE(x)) {fflush(stdout);fflush(stderr); fprintf(stderr, #x " == %s\n", u_errorName(x)); assert(U_SUCCESS(x)); }}
/* Print a UChar if possible, in seven characters. */
void prettyPrintUChar(UChar c)
{
if( (c <= 0x007F) &&
(isgraph(c)) ) {
printf(" '%c' ", (char)(0x00FF&c));
} else if ( c > 0x007F ) {
char buf[1000];
UErrorCode status = U_ZERO_ERROR;
UTextOffset o;
o = u_charName(c, U_UNICODE_CHAR_NAME, buf, 1000, &status);
if(U_SUCCESS(status) && (o>0) ) {
buf[6] = 0;
printf("%- 7s", buf);
} else {
o = u_charName(c, U_UNICODE_10_CHAR_NAME, buf, 1000, &status);
if(U_SUCCESS(status) && (o>0)) {
buf[5] = 0;
printf("~%- 6s", buf);
}
else {
printf("??????? ");
}
}
} else {
switch((char)(c & 0x007F)) {
case ' ':
printf(" ' ' ");
break;
case '\t':
printf(" \\t ");
break;
case '\n':
printf(" \\n ");
break;
default:
printf(" _ ");
break;
}
}
}
void printUChars(const char *name = "?",
const UChar *uch = kNone,
int32_t len = -1 )
{
int32_t i;
if( (len == -1) && (uch) ) {
len = u_strlen(uch);
}
printf("% 5s:", name);
for( i = 0; i <len; i++) {
printf("%- 6d ", i);
}
printf("\n");
printf("% 5s: ", "uni");
for( i = 0; i <len; i++) {
printf("\\u%04X ", (int)uch[i]);
}
printf("\n");
printf("% 5s: ", "ch");
for( i = 0; i <len; i++) {
prettyPrintUChar(uch[i]);
}
printf("\n");
}
void printString(const char *name, const UnicodeString& string)
{
UChar *uch;
int32_t len = string.size();
uch = (UChar*)malloc(sizeof(UChar)*(len+1));
string.extract(0,len,uch,0);
uch[len]=0;
printUChars(name, uch, -1);
delete(uch);
}
void printBytes(const char *name = "?",
const char *uch = "",
int32_t len = -1 )
{
int32_t i;
if( (len == -1) && (uch) ) {
len = strlen(uch);
}
printf("% 5s:", name);
for( i = 0; i <len; i++) {
printf(" %- 4d", i);
}
printf("\n");
printf("% 5s: ", "uni");
for( i = 0; i <len; i++) {
printf("\\x%02X ", 0x00FF & (int)uch[i]);
}
printf("\n");
printf("% 5s: ", "ch");
for( i = 0; i <len; i++) {
if(isgraph(uch[i])) {
printf(" '%c' ", (char)uch[i]);
} else {
printf(" ");
}
}
printf("\n");
}
void printUChar(UChar32 ch32)
{
if(ch32 > 0xFFFF) {
printf("ch: U+%06X\n", ch32);
}
else {
UChar ch = ch32;
printUChars("C", &ch, 1);
}
}
/*******************************************************************
Very simple C++ sample to convert the word 'Moscow' in Russian, followed
by an exclamation mark (!) into the KOI8-R Russian code page.
This example first creates a UnicodeString out of the Unicode chars.
targetSize must be set to the amount of space available in the target
buffer. After UnicodeConverter::fromUnicodeString() is called,
targetSize will contain the number of bytes in target[] which were
used in the resulting codepage. In this case, there is a 1:1 mapping
between the input and output characters. The exclamation mark has the
same value in both KOI8-R and Unicode.
src: 0 1 2 3 4 5 6
uni: \u041C \u043E \u0441 \u043A \u0432 \u0430 \u0021
ch: CYRILL CYRILL CYRILL CYRILL CYRILL CYRILL '!'
targ: 0 1 2 3 4 5 6
uni: \xED \xCF \xD3 \xCB \xD7 \xC1 \x21
ch: '!'
*/
UErrorCode convsample_01()
{
printf("\n\n==============================================\n"
"Sample 01: C++: simple Unicode -> koi8-r conversion\n");
// **************************** START SAMPLE *******************
// "Moscva!" in cyrillic letters, to be converted to the KOI8-R
// Russian code page.
UChar source[] = { 0x041C, 0x043E, 0x0441, 0x043A, 0x0432,
0x0430, 0x0021, 0x0000 };
char target[100];
int32_t targetSize = sizeof(target);
UnicodeString myString(source);
UErrorCode status = U_ZERO_ERROR;
// set up the converter
UnicodeConverter conv("koi8-r", status);
U_ASSERT(status);
// convert to KOI8-R
conv.fromUnicodeString(target, targetSize, myString, status);
U_ASSERT(status);
// ***************************** END SAMPLE ********************
// Print it out
printUChars("src", source);
printf("\n");
printBytes("targ", target, targetSize);
return U_ZERO_ERROR;
}
/******************************************************
Similar sample to the preceding one.
You must call ucnv_close to clean up the memory used by the
converter.
'len' returns the number of OUTPUT bytes resulting from the
conversion.
*/
UErrorCode convsample_02()
{
printf("\n\n==============================================\n"
"Sample 02: C: simple Unicode -> koi8-r conversion\n");
// **************************** START SAMPLE *******************
// "cat<cat>OK"
UChar source[] = { 0x041C, 0x043E, 0x0441, 0x043A, 0x0432,
0x0430, 0x0021, 0x0000 };
char target[100];
UErrorCode status = U_ZERO_ERROR;
UConverter *conv;
int32_t len;
// set up the converter
conv = ucnv_open("koi8-r", &status);
assert(U_SUCCESS(status));
// convert to koi8-r
len = ucnv_fromUChars(conv, target, 100, source, -1, &status);
assert(U_SUCCESS(status));
// close the converter
ucnv_close(conv);
// ***************************** END SAMPLE ********************
// Print it out
printUChars("src", source);
printf("\n");
printBytes("targ", target, len);
return U_ZERO_ERROR;
}
UErrorCode convsample_03()
{
printf("\n\n==============================================\n"
"Sample 03: C: print out all converters\n");
int32_t count;
int32_t i;
// **************************** START SAMPLE *******************
count = ucnv_countAvailable();
printf("Available converters: %d\n", count);
for(i=0;i<count;i++)
{
printf("%s ", ucnv_getAvailableName(i));
}
// ***************************** END SAMPLE ********************
printf("\n");
return U_ZERO_ERROR;
}
#define BUFFERSIZE 17 /* make it interesting :) */
/*
Converting from a codepage to Unicode in bulk..
What is the best way to determine the buffer size?
The 'buffersize' is in bytes of input.
For a given converter, divinding this by the minimum char size
give you the maximum number of Unicode characters that could be
expected for a given number of input bytes.
see: ucnv_getMinCharSize()
For example, a single byte codepage like 'Latin-3' has a
minimum char size of 1. (It takes at least 1 byte to represent
each Unicode char.) So the unicode buffer has the same number of
UChars as the input buffer has bytes.
In a strictly double byte codepage such as cp1362 (Windows
Korean), the minimum char size is 2. So, only half as many Unicode
chars as bytes are needed.
This work to calculate the buffer size is an optimization. Any
size of input and output buffer can be used, as long as the
program handles the following cases: If the input buffer is empty,
the source pointer will be equal to sourceLimit. If the output
buffer has overflowed, U_BUFFER_OVERFLOW_ERROR will be returned.
*/
UErrorCode convsample_05()
{
printf("\n\n==============================================\n"
"Sample 05: C: count the number of letters in a UTF-8 document\n");
FILE *f;
int32_t count;
char inBuf[BUFFERSIZE];
const char *source;
const char *sourceLimit;
UChar *uBuf;
UChar *target;
UChar *targetLimit;
UChar *p;
int32_t uBufSize = 0;
UConverter *conv;
UErrorCode status = U_ZERO_ERROR;
uint32_t letters=0, total=0;
f = fopen("data01.ut8", "r");
if(!f)
{
fprintf(stderr, "Couldn't open file 'data01.ut8' (UTF-8 data file).\n");
return U_FILE_ACCESS_ERROR;
}
// **************************** START SAMPLE *******************
conv = ucnv_open("utf-8", &status);
assert(U_SUCCESS(status));
uBufSize = (BUFFERSIZE/ucnv_getMinCharSize(conv));
printf("input bytes %d / min chars %d = %d UChars\n",
BUFFERSIZE, ucnv_getMinCharSize(conv), uBufSize);
uBuf = (UChar*)malloc(uBufSize * sizeof(UChar));
assert(uBuf!=NULL);
// grab another buffer's worth
while((!feof(f)) &&
((count=fread(inBuf, 1, BUFFERSIZE , f)) > 0) )
{
// Convert bytes to unicode
source = inBuf;
sourceLimit = inBuf + count;
do
{
target = uBuf;
targetLimit = uBuf + uBufSize;
ucnv_toUnicode(conv, &target, targetLimit,
&source, sourceLimit, NULL,
feof(f)?TRUE:FALSE, /* pass 'flush' when eof */
/* is true (when no more data will come) */
&status);
if(status == U_BUFFER_OVERFLOW_ERROR)
{
// simply ran out of space - we'll reset the target ptr the next
// time through the loop.
status = U_ZERO_ERROR;
}
else
{
// Check other errors here.
assert(U_SUCCESS(status));
// Break out of the loop (by force)
}
// Process the Unicode
// Todo: handle UTF-16/surrogates
for(p = uBuf; p<target; p++)
{
if(u_isalpha(*p))
letters++;
total++;
}
} while (source < sourceLimit); // while simply out of space
}
printf("%d letters out of %d total UChars.\n", letters, total);
// ***************************** END SAMPLE ********************
ucnv_close(conv);
printf("\n");
return U_ZERO_ERROR;
}
#undef BUFFERSIZE
/*******************************************************************
Very simple C++ sample to convert a string into Unicode from SJIS
This example creates a UnicodeString out of the chars.
*/
UErrorCode convsample_11()
{
printf("\n\n==============================================\n"
"Sample 11: C++: simple sjis -> Unicode conversion\n");
// **************************** START SAMPLE *******************
char source[] = { 0x63, 0x61, 0x74, 0x94, 0x4C, 0x82, 0x6E, 0x82, 0x6A, 0x00 };
int32_t sourceSize = sizeof(source);
UnicodeString target;
UErrorCode status = U_ZERO_ERROR;
// set up the converter
UnicodeConverter conv("shift_jis", status);
assert(U_SUCCESS(status));
// convert from JIS
conv.toUnicodeString(target, source, sourceSize, status);
assert(U_SUCCESS(status));
// ***************************** END SAMPLE ********************
// Print it out
printBytes("src", source, sourceSize);
printf("\n");
printString("targ", target );
printf("\n");
return U_ZERO_ERROR;
}
/******************************************************
Similar sample to the preceding one.
You must call ucnv_close to clean up the memory used by the
converter.
'len' returns the number of OUTPUT bytes resulting from the
conversion.
*/
UErrorCode convsample_12()
{
printf("\n\n==============================================\n"
"Sample 12: C: simple sjis -> unicode conversion\n");
// **************************** START SAMPLE *******************
char source[] = { 0x63, 0x61, 0x74, 0x94, 0x4C, 0x82, 0x6E, 0x82, 0x6A, 0x00 };
UChar target[100];
UErrorCode status = U_ZERO_ERROR;
UConverter *conv;
int32_t len;
// set up the converter
conv = ucnv_open("shift_jis", &status);
assert(U_SUCCESS(status));
// convert to Unicode
len = ucnv_toUChars(conv, target, 100, source, -1, &status);
U_ASSERT(status);
// close the converter
ucnv_close(conv);
// ***************************** END SAMPLE ********************
// Print it out
printBytes("src", source);
printf("\n");
printUChars("targ", target, len);
return U_ZERO_ERROR;
}
/******************************************************************
C: Convert from codepage to Unicode one at a time.
*/
UErrorCode convsample_13()
{
printf("\n\n==============================================\n"
"Sample 13: C: simple Big5 -> unicode conversion, char at a time\n");
const char sourceChars[] = { 0x7a, 0x68, 0x3d, 0xa4, 0xa4, 0xa4, 0xe5, 0x2e };
// const char sourceChars[] = { 0x7a, 0x68, 0x3d, 0xe4, 0xb8, 0xad, 0xe6, 0x96, 0x87, 0x2e };
const char *source, *sourceLimit;
UChar32 target;
UErrorCode status = U_ZERO_ERROR;
UConverter *conv = NULL;
int32_t srcCount=0;
int32_t dstCount=0;
srcCount = sizeof(sourceChars);
conv = ucnv_open("Big5", &status);
U_ASSERT(status);
source = sourceChars;
sourceLimit = sourceChars + sizeof(sourceChars);
// **************************** START SAMPLE *******************
printBytes("src",source,sourceLimit-source);
while(source < sourceLimit)
{
puts("");
target = ucnv_getNextUChar (conv,
&source,
sourceLimit,
&status);
// printBytes("src",source,sourceLimit-source);
U_ASSERT(status);
printUChar(target);
dstCount++;
}
// ************************** END SAMPLE *************************
printf("src=%d bytes, dst=%d uchars\n", srcCount, dstCount);
ucnv_close(conv);
}
UBool convsample_20_didSubstitute(const char *source)
{
UChar uchars[100];
char bytes[100];
UConverter *conv = NULL;
UErrorCode status = U_ZERO_ERROR;
uint32_t len, len2;
FromUFLAGContext context;
printf("\n\n==============================================\n"
"Sample 20: C: Test for substitution using callbacks\n");
/* print out the original source */
printBytes("src", source);
printf("\n");
/* First, convert from UTF8 to unicode */
conv = ucnv_open("utf-8", &status);
U_ASSERT(status);
len = ucnv_toUChars(conv, uchars, 100, source, strlen(source), &status);
U_ASSERT(status);
printUChars("uch", uchars, len);
printf("\n");
/* Now, close the converter */
ucnv_close(conv);
/* Now, convert to windows-1252 */
conv = ucnv_open("windows-1252", &status);
U_ASSERT(status);
/* Converter starts out with the SUBSTITUTE callback set. */
/* initialize our callback */
context.subCallback = NULL;
context.subContext = NULL;
context.flag = FALSE;
/* Set our special callback */
ucnv_setFromUCallBack(conv,
UCNV_FROM_U_CALLBACK_FLAG,
&context,
&context.subCallback,
&context.subContext,
&status);
U_ASSERT(status);
len2 = ucnv_fromUChars(conv, bytes, 100, uchars, len, &status);
U_ASSERT(status);
ucnv_close(conv);
/* print out the original source */
printBytes("bytes", bytes, len2);
return context.flag; /* true if callback was called */
}
UErrorCode convsample_20()
{
const char *sample1 = "abc\xdf\xbf";
const char *sample2 = "abc_def";
if(convsample_20_didSubstitute(sample1))
{
printf("DID substitute.\n******\n");
}
else
{
printf("Did NOT substitute.\n*****\n");
}
if(convsample_20_didSubstitute(sample2))
{
printf("DID substitute.\n******\n");
}
else
{
printf("Did NOT substitute.\n*****\n");
}
}
/* main */
const char *scriptName(UCharScript script)
{
switch(script)
{
case U_BASIC_LATIN: return ("BASIC_LATIN");
case U_LATIN_1_SUPPLEMENT: return ("LATIN_1_SUPPLEMENT");
case U_LATIN_EXTENDED_A: return ("LATIN_EXTENDED_A");
case U_LATIN_EXTENDED_B: return ("LATIN_EXTENDED_B");
case U_IPA_EXTENSIONS: return ("IPA_EXTENSIONS");
case U_SPACING_MODIFIER_LETTERS: return ("SPACING_MODIFIER_LETTERS");
case U_COMBINING_DIACRITICAL_MARKS: return ("COMBINING_DIACRITICAL_MARKS");
case U_GREEK: return ("GREEK");
case U_CYRILLIC: return ("CYRILLIC");
case U_ARMENIAN: return ("ARMENIAN");
case U_HEBREW: return ("HEBREW");
case U_ARABIC: return ("ARABIC");
case U_SYRIAC: return ("SYRIAC");
case U_THAANA: return ("THAANA");
case U_DEVANAGARI: return ("DEVANAGARI");
case U_BENGALI: return ("BENGALI");
case U_GURMUKHI: return ("GURMUKHI");
case U_GUJARATI: return ("GUJARATI");
case U_ORIYA: return ("ORIYA");
case U_TAMIL: return ("TAMIL");
case U_TELUGU: return ("TELUGU");
case U_KANNADA: return ("KANNADA");
case U_MALAYALAM: return ("MALAYALAM");
case U_SINHALA: return ("SINHALA");
case U_THAI: return ("THAI");
case U_LAO: return ("LAO");
case U_TIBETAN: return ("TIBETAN");
case U_MYANMAR: return ("MYANMAR");
case U_GEORGIAN: return ("GEORGIAN");
case U_HANGUL_JAMO: return ("HANGUL_JAMO");
case U_ETHIOPIC: return ("ETHIOPIC");
case U_CHEROKEE: return ("CHEROKEE");
case U_UNIFIED_CANADIAN_ABORIGINAL_SYLLABICS: return ("UNIFIED_CANADIAN_ABORIGINAL_SYLLABICS");
case U_OGHAM: return ("OGHAM");
case U_RUNIC: return ("RUNIC");
case U_KHMER: return ("KHMER");
case U_MONGOLIAN: return ("MONGOLIAN");
case U_LATIN_EXTENDED_ADDITIONAL: return ("LATIN_EXTENDED_ADDITIONAL");
case U_GREEK_EXTENDED: return ("GREEK_EXTENDED");
case U_GENERAL_PUNCTUATION: return ("GENERAL_PUNCTUATION");
case U_SUPERSCRIPTS_AND_SUBSCRIPTS: return ("SUPERSCRIPTS_AND_SUBSCRIPTS");
case U_CURRENCY_SYMBOLS: return ("CURRENCY_SYMBOLS");
case U_COMBINING_MARKS_FOR_SYMBOLS: return ("COMBINING_MARKS_FOR_SYMBOLS");
case U_LETTERLIKE_SYMBOLS: return ("LETTERLIKE_SYMBOLS");
case U_NUMBER_FORMS: return ("NUMBER_FORMS");
case U_ARROWS: return ("ARROWS");
case U_MATHEMATICAL_OPERATORS: return ("MATHEMATICAL_OPERATORS");
case U_MISCELLANEOUS_TECHNICAL: return ("MISCELLANEOUS_TECHNICAL");
case U_CONTROL_PICTURES: return ("CONTROL_PICTURES");
case U_OPTICAL_CHARACTER_RECOGNITION: return ("OPTICAL_CHARACTER_RECOGNITION");
case U_ENCLOSED_ALPHANUMERICS: return ("ENCLOSED_ALPHANUMERICS");
case U_BOX_DRAWING: return ("BOX_DRAWING");
case U_BLOCK_ELEMENTS: return ("BLOCK_ELEMENTS");
case U_GEOMETRIC_SHAPES: return ("GEOMETRIC_SHAPES");
case U_MISCELLANEOUS_SYMBOLS: return ("MISCELLANEOUS_SYMBOLS");
case U_DINGBATS: return ("DINGBATS");
case U_BRAILLE_PATTERNS: return ("BRAILLE_PATTERNS");
case U_CJK_RADICALS_SUPPLEMENT: return ("CJK_RADICALS_SUPPLEMENT");
case U_KANGXI_RADICALS: return ("KANGXI_RADICALS");
case U_IDEOGRAPHIC_DESCRIPTION_CHARACTERS: return ("IDEOGRAPHIC_DESCRIPTION_CHARACTERS");
case U_CJK_SYMBOLS_AND_PUNCTUATION: return ("CJK_SYMBOLS_AND_PUNCTUATION");
case U_HIRAGANA: return ("HIRAGANA");
case U_KATAKANA: return ("KATAKANA");
case U_BOPOMOFO: return ("BOPOMOFO");
case U_HANGUL_COMPATIBILITY_JAMO: return ("HANGUL_COMPATIBILITY_JAMO");
case U_KANBUN: return ("KANBUN");
case U_BOPOMOFO_EXTENDED: return ("BOPOMOFO_EXTENDED");
case U_ENCLOSED_CJK_LETTERS_AND_MONTHS: return ("ENCLOSED_CJK_LETTERS_AND_MONTHS");
case U_CJK_COMPATIBILITY: return ("CJK_COMPATIBILITY");
case U_CJK_UNIFIED_IDEOGRAPHS_EXTENSION_A: return ("CJK_UNIFIED_IDEOGRAPHS_EXTENSION_A");
case U_CJK_UNIFIED_IDEOGRAPHS: return ("CJK_UNIFIED_IDEOGRAPHS");
case U_YI_SYLLABLES: return ("YI_SYLLABLES");
case U_YI_RADICALS: return ("YI_RADICALS");
case U_HANGUL_SYLLABLES: return ("HANGUL_SYLLABLES");
case U_HIGH_SURROGATES: return ("HIGH_SURROGATES");
case U_HIGH_PRIVATE_USE_SURROGATES: return ("HIGH_PRIVATE_USE_SURROGATES");
case U_LOW_SURROGATES: return ("LOW_SURROGATES");
case U_PRIVATE_USE_AREA /* PRIVATE_USE */: return ("PRIVATE_USE_AREA");
case U_CJK_COMPATIBILITY_IDEOGRAPHS: return ("CJK_COMPATIBILITY_IDEOGRAPHS");
case U_ALPHABETIC_PRESENTATION_FORMS: return ("ALPHABETIC_PRESENTATION_FORMS");
case U_ARABIC_PRESENTATION_FORMS_A: return ("ARABIC_PRESENTATION_FORMS_A");
case U_COMBINING_HALF_MARKS: return ("COMBINING_HALF_MARKS");
case U_CJK_COMPATIBILITY_FORMS: return ("CJK_COMPATIBILITY_FORMS");
case U_SMALL_FORM_VARIANTS: return ("SMALL_FORM_VARIANTS");
case U_ARABIC_PRESENTATION_FORMS_B: return ("ARABIC_PRESENTATION_FORMS_B");
case U_SPECIALS: return ("SPECIALS");
case U_HALFWIDTH_AND_FULLWIDTH_FORMS: return ("HALFWIDTH_AND_FULLWIDTH_FORMS");
/*case U_CHAR_SCRIPT_COUNT: return ("SCRIPT_COUNT"); */
case U_NO_SCRIPT: return ("NO_SCRIPT");
default: return("Unknown??????");
}
}
void dumpTest()
{
char buf[1000];
UErrorCode status = U_ZERO_ERROR;
UTextOffset o;
int32_t n;
UChar c;
FILE *q;
q = fopen("nt.txt", "w");
for(n=0;n<0x10000;n++)
{
c = (UChar)n;
status = U_ZERO_ERROR;
o = u_charName(c, U_UNICODE_10_CHAR_NAME, buf, 1000, &status);
if(U_SUCCESS(status) && (o>0) ) {
fprintf(q, "%06X:% 8s:%s\n", n, scriptName(u_charScript(c)), buf);
}
else {
fprintf(q, "%06X:% 8s:_______________\n", n, scriptName(u_charScript(c)));
}
}
fclose(q);
}
int main()
{
// dumpTest();
// return 0;
printf("DEFCONV=%s, DEVLOC=%s\n", ucnv_getDefaultName(), uloc_getDefault());
convsample_01();
convsample_02();
convsample_03();
// convsample_04(); /* not written yet */
convsample_05();
convsample_11();
// convsample_12(); [fails]
convsample_13();
convsample_20();
return 0;
}
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