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+/*
+*******************************************************************************
+*
+* Copyright (C) 2000-2002, International Business Machines
+* Corporation and others. All Rights Reserved.
+*
+*******************************************************************************
+* file name: ustring.c
+* encoding: US-ASCII
+* tab size: 8 (not used)
+* indentation:4
+*
+* created on: 2000aug15
+* created by: Markus W. Scherer
+*
+* This file contains sample code that illustrates the use of Unicode strings
+* with ICU.
+*/
+
+#include <stdio.h>
+#include "unicode/utypes.h"
+#include "unicode/uchar.h"
+#include "unicode/locid.h"
+#include "unicode/ustring.h"
+#include "unicode/ucnv.h"
+#include "unicode/unistr.h"
+
+#define LENGTHOF(array) (sizeof(array)/sizeof((array)[0]))
+
+// helper functions -------------------------------------------------------- ***
+
+// default converter for the platform encoding
+static UConverter *cnv=NULL;
+
+static void
+printUString(const char *announce, const UChar *s, int32_t length) {
+ static char out[200];
+ UChar32 c;
+ int32_t i;
+ UErrorCode errorCode=U_ZERO_ERROR;
+
+ /*
+ * Convert to the "platform encoding". See notes in printUnicodeString().
+ * ucnv_fromUChars(), like most ICU APIs understands length==-1
+ * to mean that the string is NUL-terminated.
+ */
+ ucnv_fromUChars(cnv, out, sizeof(out), s, length, &errorCode);
+ if(U_FAILURE(errorCode) || errorCode==U_STRING_NOT_TERMINATED_WARNING) {
+ printf("%sproblem converting string from Unicode: %s\n", announce, u_errorName(errorCode));
+ return;
+ }
+
+ printf("%s%s {", announce, out);
+
+ /* output the code points (not code units) */
+ if(length>=0) {
+ /* s is not NUL-terminated */
+ for(i=0; i<length; /* U16_NEXT post-increments */) {
+ U16_NEXT(s, i, length, c);
+ printf(" %04x", c);
+ }
+ } else {
+ /* s is NUL-terminated */
+ for(i=0; /* condition in loop body */; /* U16_NEXT post-increments */) {
+ U16_NEXT(s, i, length, c);
+ if(c==0) {
+ break;
+ }
+ printf(" %04x", c);
+ }
+ }
+ printf(" }\n");
+}
+
+static void
+printUnicodeString(const char *announce, const UnicodeString &s) {
+ static char out[200];
+ int32_t i, length;
+
+ // output the string, converted to the platform encoding
+
+ // Note for Windows: The "platform encoding" defaults to the "ANSI codepage",
+ // which is different from the "OEM codepage" in the console window.
+ // However, if you pipe the output into a file and look at it with Notepad
+ // or similar, then "ANSI" characters will show correctly.
+ // Production code should be aware of what encoding is required,
+ // and use a UConverter or at least a charset name explicitly.
+ out[s.extract(0, 99, out)]=0;
+ printf("%s%s {", announce, out);
+
+ // output the code units (not code points)
+ length=s.length();
+ for(i=0; i<length; ++i) {
+ printf(" %04x", s.charAt(i));
+ }
+ printf(" }\n");
+}
+
+// sample code for utf.h macros -------------------------------------------- ***
+
+static void
+demo_utf_h_macros() {
+ static UChar input[]={ 0x0061, 0xd800, 0xdc00, 0xdbff, 0xdfff, 0x0062 };
+ UChar32 c;
+ int32_t i;
+ UBool isError;
+
+ printf("\n* demo_utf_h_macros() -------------- ***\n\n");
+
+ printUString("iterate forward through: ", input, LENGTHOF(input));
+ for(i=0; i<LENGTHOF(input); /* U16_NEXT post-increments */) {
+ /* Iterating forwards
+ Codepoint at offset 0: U+0061
+ Codepoint at offset 1: U+10000
+ Codepoint at offset 3: U+10ffff
+ Codepoint at offset 5: U+0062
+ */
+ printf("Codepoint at offset %d: U+", i);
+ U16_NEXT(input, i, LENGTHOF(input), c);
+ printf("%04x\n", c);
+ }
+
+ puts("");
+
+ isError=FALSE;
+ i=1; /* write position, gets post-incremented so needs to be in an l-value */
+ U16_APPEND(input, i, LENGTHOF(input), 0x0062, isError);
+
+ printUString("iterate backward through: ", input, LENGTHOF(input));
+ for(i=LENGTHOF(input); i>0; /* U16_PREV pre-decrements */) {
+ U16_PREV(input, 0, i, c);
+ /* Iterating backwards
+ Codepoint at offset 5: U+0062
+ Codepoint at offset 3: U+10ffff
+ Codepoint at offset 2: U+dc00 -- unpaired surrogate because lead surr. overwritten
+ Codepoint at offset 1: U+0062 -- by this BMP code point
+ Codepoint at offset 0: U+0061
+ */
+ printf("Codepoint at offset %d: U+%04x\n", i, c);
+ }
+}
+
+// sample code for Unicode strings in C ------------------------------------ ***
+
+static void demo_C_Unicode_strings() {
+ printf("\n* demo_C_Unicode_strings() --------- ***\n\n");
+
+ static const UChar text[]={ 0x41, 0x42, 0x43, 0 }; /* "ABC" */
+ static const UChar appendText[]={ 0x61, 0x62, 0x63, 0 }; /* "abc" */
+ static const UChar cmpText[]={ 0x61, 0x53, 0x73, 0x43, 0 }; /* "aSsC" */
+ UChar buffer[32];
+ int32_t compare;
+ int32_t length=u_strlen(text); /* length=3 */
+
+ /* simple ANSI C-style functions */
+ buffer[0]=0; /* empty, NUL-terminated string */
+ u_strncat(buffer, text, 1); /* append just n=1 character ('A') */
+ u_strcat(buffer, appendText); /* buffer=="Aabc" */
+ length=u_strlen(buffer); /* length=4 */
+ printUString("should be \"Aabc\": ", buffer, -1);
+
+ /* bitwise comparing buffer with text */
+ compare=u_strcmp(buffer, text);
+ if(compare<=0) {
+ printf("String comparison error, expected \"Aabc\" > \"ABC\"\n");
+ }
+
+ /* Build "A<sharp s>C" in the buffer... */
+ u_strcpy(buffer, text);
+ buffer[1]=0xdf; /* sharp s, case-compares equal to "ss" */
+ printUString("should be \"A<sharp s>C\": ", buffer, -1);
+
+ /* Compare two strings case-insensitively using full case folding */
+ compare=u_strcasecmp(buffer, cmpText, U_FOLD_CASE_DEFAULT);
+ if(compare!=0) {
+ printf("String case insensitive comparison error, expected \"AbC\" to be equal to \"ABC\"\n");
+ }
+}
+
+// sample code for case mappings with C APIs -------------------------------- ***
+
+static void demoCaseMapInC() {
+ /*
+ * input=
+ * "aB<capital sigma>"
+ * "iI<small dotless i><capital dotted I> "
+ * "<sharp s> <small lig. ffi>"
+ * "<small final sigma><small sigma><capital sigma>"
+ */
+ static const UChar input[]={
+ 0x61, 0x42, 0x3a3,
+ 0x69, 0x49, 0x131, 0x130, 0x20,
+ 0xdf, 0x20, 0xfb03,
+ 0x3c2, 0x3c3, 0x3a3, 0
+ };
+ UChar buffer[32];
+
+ UErrorCode errorCode;
+ UChar32 c;
+ int32_t i, j, length;
+ UBool isError;
+
+ printf("\n* demoCaseMapInC() ----------------- ***\n\n");
+
+ /*
+ * First, use simple case mapping functions which provide
+ * 1:1 code point mappings without context/locale ID.
+ *
+ * Note that some mappings will not be "right" because some "real"
+ * case mappings require context, depend on the locale ID,
+ * and/or result in a change in the number of code points.
+ */
+ printUString("input string: ", input, -1);
+
+ /* uppercase */
+ isError=FALSE;
+ for(i=j=0; j<LENGTHOF(buffer) && !isError; /* U16_NEXT post-increments */) {
+ U16_NEXT(input, i, INT32_MAX, c); /* without length because NUL-terminated */
+ if(c==0) {
+ break; /* stop at terminating NUL, no need to terminate buffer */
+ }
+ c=u_toupper(c);
+ U16_APPEND(buffer, j, LENGTHOF(buffer), c, isError);
+ }
+ printUString("simple-uppercased: ", buffer, j);
+ /* lowercase */
+ isError=FALSE;
+ for(i=j=0; j<LENGTHOF(buffer) && !isError; /* U16_NEXT post-increments */) {
+ U16_NEXT(input, i, INT32_MAX, c); /* without length because NUL-terminated */
+ if(c==0) {
+ break; /* stop at terminating NUL, no need to terminate buffer */
+ }
+ c=u_tolower(c);
+ U16_APPEND(buffer, j, LENGTHOF(buffer), c, isError);
+ }
+ printUString("simple-lowercased: ", buffer, j);
+ /* titlecase */
+ isError=FALSE;
+ for(i=j=0; j<LENGTHOF(buffer) && !isError; /* U16_NEXT post-increments */) {
+ U16_NEXT(input, i, INT32_MAX, c); /* without length because NUL-terminated */
+ if(c==0) {
+ break; /* stop at terminating NUL, no need to terminate buffer */
+ }
+ c=u_totitle(c);
+ U16_APPEND(buffer, j, LENGTHOF(buffer), c, isError);
+ }
+ printUString("simple-titlecased: ", buffer, j);
+ /* case-fold/default */
+ isError=FALSE;
+ for(i=j=0; j<LENGTHOF(buffer) && !isError; /* U16_NEXT post-increments */) {
+ U16_NEXT(input, i, INT32_MAX, c); /* without length because NUL-terminated */
+ if(c==0) {
+ break; /* stop at terminating NUL, no need to terminate buffer */
+ }
+ c=u_foldCase(c, U_FOLD_CASE_DEFAULT);
+ U16_APPEND(buffer, j, LENGTHOF(buffer), c, isError);
+ }
+ printUString("simple-case-folded/default: ", buffer, j);
+ /* case-fold/Turkic */
+ isError=FALSE;
+ for(i=j=0; j<LENGTHOF(buffer) && !isError; /* U16_NEXT post-increments */) {
+ U16_NEXT(input, i, INT32_MAX, c); /* without length because NUL-terminated */
+ if(c==0) {
+ break; /* stop at terminating NUL, no need to terminate buffer */
+ }
+ c=u_foldCase(c, U_FOLD_CASE_EXCLUDE_SPECIAL_I);
+ U16_APPEND(buffer, j, LENGTHOF(buffer), c, isError);
+ }
+ printUString("simple-case-folded/Turkic: ", buffer, j);
+
+ /*
+ * Second, use full case mapping functions which provide
+ * 1:n code point mappings (n can be 0!) and are sensitive to context and locale ID.
+ *
+ * Note that lower/upper/titlecasing take a locale ID while case-folding
+ * has bit flag options instead, by design of the Unicode SpecialCasing.txt UCD file.
+ *
+ * Also, string titlecasing requires a BreakIterator to find starts of words.
+ * The sample code here passes in a NULL pointer; u_strToTitle() will open and close a default
+ * titlecasing BreakIterator automatically.
+ * For production code where many strings are titlecased it would be more efficient
+ * to open a BreakIterator externally and pass it in.
+ */
+ printUString("\ninput string: ", input, -1);
+
+ /* lowercase/English */
+ errorCode=U_ZERO_ERROR;
+ length=u_strToLower(buffer, LENGTHOF(buffer), input, -1, "en", &errorCode);
+ if(U_SUCCESS(errorCode)) {
+ printUString("full-lowercased/en: ", buffer, length);
+ } else {
+ printf("error in u_strToLower(en)=%ld error=%s\n", length, u_errorName(errorCode));
+ }
+ /* lowercase/Turkish */
+ errorCode=U_ZERO_ERROR;
+ length=u_strToLower(buffer, LENGTHOF(buffer), input, -1, "tr", &errorCode);
+ if(U_SUCCESS(errorCode)) {
+ printUString("full-lowercased/tr: ", buffer, length);
+ } else {
+ printf("error in u_strToLower(tr)=%ld error=%s\n", length, u_errorName(errorCode));
+ }
+ /* uppercase/English */
+ errorCode=U_ZERO_ERROR;
+ length=u_strToUpper(buffer, LENGTHOF(buffer), input, -1, "en", &errorCode);
+ if(U_SUCCESS(errorCode)) {
+ printUString("full-uppercased/en: ", buffer, length);
+ } else {
+ printf("error in u_strToUpper(en)=%ld error=%s\n", length, u_errorName(errorCode));
+ }
+ /* uppercase/Turkish */
+ errorCode=U_ZERO_ERROR;
+ length=u_strToUpper(buffer, LENGTHOF(buffer), input, -1, "tr", &errorCode);
+ if(U_SUCCESS(errorCode)) {
+ printUString("full-uppercased/tr: ", buffer, length);
+ } else {
+ printf("error in u_strToUpper(tr)=%ld error=%s\n", length, u_errorName(errorCode));
+ }
+ /* titlecase/English */
+ errorCode=U_ZERO_ERROR;
+ length=u_strToTitle(buffer, LENGTHOF(buffer), input, -1, NULL, "en", &errorCode);
+ if(U_SUCCESS(errorCode)) {
+ printUString("full-titlecased/en: ", buffer, length);
+ } else {
+ printf("error in u_strToTitle(en)=%ld error=%s\n", length, u_errorName(errorCode));
+ }
+ /* titlecase/Turkish */
+ errorCode=U_ZERO_ERROR;
+ length=u_strToTitle(buffer, LENGTHOF(buffer), input, -1, NULL, "tr", &errorCode);
+ if(U_SUCCESS(errorCode)) {
+ printUString("full-titlecased/tr: ", buffer, length);
+ } else {
+ printf("error in u_strToTitle(tr)=%ld error=%s\n", length, u_errorName(errorCode));
+ }
+ /* case-fold/default */
+ errorCode=U_ZERO_ERROR;
+ length=u_strFoldCase(buffer, LENGTHOF(buffer), input, -1, U_FOLD_CASE_DEFAULT, &errorCode);
+ if(U_SUCCESS(errorCode)) {
+ printUString("full-case-folded/default: ", buffer, length);
+ } else {
+ printf("error in u_strFoldCase(default)=%ld error=%s\n", length, u_errorName(errorCode));
+ }
+ /* case-fold/Turkic */
+ errorCode=U_ZERO_ERROR;
+ length=u_strFoldCase(buffer, LENGTHOF(buffer), input, -1, U_FOLD_CASE_EXCLUDE_SPECIAL_I, &errorCode);
+ if(U_SUCCESS(errorCode)) {
+ printUString("full-case-folded/Turkic: ", buffer, length);
+ } else {
+ printf("error in u_strFoldCase(Turkic)=%ld error=%s\n", length, u_errorName(errorCode));
+ }
+}
+
+// sample code for case mappings with C++ APIs ------------------------------ ***
+
+static void demoCaseMapInCPlusPlus() {
+ /*
+ * input=
+ * "aB<capital sigma>"
+ * "iI<small dotless i><capital dotted I> "
+ * "<sharp s> <small lig. ffi>"
+ * "<small final sigma><small sigma><capital sigma>"
+ */
+ static const UChar input[]={
+ 0x61, 0x42, 0x3a3,
+ 0x69, 0x49, 0x131, 0x130, 0x20,
+ 0xdf, 0x20, 0xfb03,
+ 0x3c2, 0x3c3, 0x3a3, 0
+ };
+
+ printf("\n* demoCaseMapInCPlusPlus() --------- ***\n\n");
+
+ UnicodeString s(input), t;
+ const Locale &en=Locale::getEnglish();
+ Locale tr("tr");
+
+ /*
+ * Full case mappings as in demoCaseMapInC(), using UnicodeString functions.
+ * These functions modify the string object itself.
+ * Since we want to keep the input string around, we copy it each time
+ * and case-map the copy.
+ */
+ printUnicodeString("input string: ", s);
+
+ /* lowercase/English */
+ printUnicodeString("full-lowercased/en: ", (t=s).toLower(en));
+ /* lowercase/Turkish */
+ printUnicodeString("full-lowercased/tr: ", (t=s).toLower(tr));
+ /* uppercase/English */
+ printUnicodeString("full-uppercased/en: ", (t=s).toUpper(en));
+ /* uppercase/Turkish */
+ printUnicodeString("full-uppercased/tr: ", (t=s).toUpper(tr));
+ /* titlecase/English */
+ printUnicodeString("full-titlecased/en: ", (t=s).toTitle(NULL, en));
+ /* titlecase/Turkish */
+ printUnicodeString("full-titlecased/tr: ", (t=s).toTitle(NULL, tr));
+ /* case-folde/default */
+ printUnicodeString("full-case-folded/default: ", (t=s).foldCase(U_FOLD_CASE_DEFAULT));
+ /* case-folde/Turkic */
+ printUnicodeString("full-case-folded/Turkic: ", (t=s).foldCase(U_FOLD_CASE_EXCLUDE_SPECIAL_I));
+}
+
+// sample code for UnicodeString storage models ----------------------------- ***
+
+static const UChar readonly[]={
+ 0x61, 0x31, 0x20ac
+};
+static UChar writeable[]={
+ 0x62, 0x32, 0xdbc0, 0xdc01 // includes a surrogate pair for a supplementary code point
+};
+static char out[100];
+
+static void
+demoUnicodeStringStorage() {
+ // These sample code lines illustrate how to use UnicodeString, and the
+ // comments tell what happens internally. There are no APIs to observe
+ // most of this programmatically, except for stepping into the code
+ // with a debugger.
+ // This is by design to hide such details from the user.
+ int32_t i;
+
+ printf("\n* demoUnicodeStringStorage() ------- ***\n\n");
+
+ // * UnicodeString with internally stored contents
+ // instantiate a UnicodeString from a single code point
+ // the few (2) UChars will be stored in the object itself
+ UnicodeString one((UChar32)0x24001);
+ // this copies the few UChars into the "two" object
+ UnicodeString two=one;
+ printf("length of short string copy: %d\n", two.length());
+ // set "one" to contain the 3 UChars from readonly
+ // this setTo() variant copies the characters
+ one.setTo(readonly, LENGTHOF(readonly));
+
+ // * UnicodeString with allocated contents
+ // build a longer string that will not fit into the object's buffer
+ one+=UnicodeString(writeable, LENGTHOF(writeable));
+ one+=one;
+ one+=one;
+ printf("length of longer string: %d\n", one.length());
+ // copying will use the same allocated buffer and increment the reference
+ // counter
+ two=one;
+ printf("length of longer string copy: %d\n", two.length());
+
+ // * UnicodeString using readonly-alias to a const UChar array
+ // construct a string that aliases a readonly buffer
+ UnicodeString three(FALSE, readonly, LENGTHOF(readonly));
+ printUnicodeString("readonly-alias string: ", three);
+ // copy-on-write: any modification to the string results in
+ // a copy to either the internal buffer or to a newly allocated one
+ three.setCharAt(1, 0x39);
+ printUnicodeString("readonly-aliasing string after modification: ", three);
+ // the aliased array is not modified
+ for(i=0; i<three.length(); ++i) {
+ printf("readonly buffer[%d] after modifying its string: 0x%lx\n",
+ i, readonly[i]);
+ }
+ // setTo() readonly alias
+ one.setTo(FALSE, writeable, LENGTHOF(writeable));
+ // copying the readonly-alias object with fastCopyFrom() (new in ICU 2.4)
+ // will readonly-alias the same buffer
+ two.fastCopyFrom(one);
+ printUnicodeString("fastCopyFrom(readonly alias of \"writeable\" array): ", two);
+ printf("verify that a fastCopyFrom(readonly alias) uses the same buffer pointer: %d (should be 1)\n",
+ one.getBuffer()==two.getBuffer());
+ // a normal assignment will clone the contents (new in ICU 2.4)
+ two=one;
+ printf("verify that a regular copy of a readonly alias uses a different buffer pointer: %d (should be 0)\n",
+ one.getBuffer()==two.getBuffer());
+
+ // * UnicodeString using writeable-alias to a non-const UChar array
+ UnicodeString four(writeable, LENGTHOF(writeable), LENGTHOF(writeable));
+ printUnicodeString("writeable-alias string: ", four);
+ // a modification writes through to the buffer
+ four.setCharAt(1, 0x39);
+ for(i=0; i<four.length(); ++i) {
+ printf("writeable-alias backing buffer[%d]=0x%lx "
+ "after modification\n", i, writeable[i]);
+ }
+ // a copy will not alias any more;
+ // instead, it will get a copy of the contents into allocated memory
+ two=four;
+ two.setCharAt(1, 0x21);
+ for(i=0; i<two.length(); ++i) {
+ printf("writeable-alias backing buffer[%d]=0x%lx after "
+ "modification of string copy\n", i, writeable[i]);
+ }
+ // setTo() writeable alias, capacity==length
+ one.setTo(writeable, LENGTHOF(writeable), LENGTHOF(writeable));
+ // grow the string - it will not fit into the backing buffer any more
+ // and will get copied before modification
+ one.append((UChar)0x40);
+ // shrink it back so it would fit
+ one.truncate(one.length()-1);
+ // we still operate on the copy
+ one.setCharAt(1, 0x25);
+ printf("string after growing too much and then shrinking[1]=0x%lx\n"
+ " backing store for this[1]=0x%lx\n",
+ one.charAt(1), writeable[1]);
+ // if we need it in the original buffer, then extract() to it
+ // extract() does not do anything if the string aliases that same buffer
+ // i=min(one.length(), length of array)
+ if(one.length()<LENGTHOF(writeable)) {
+ i=one.length();
+ } else {
+ i=LENGTHOF(writeable);
+ }
+ one.extract(0, i, writeable);
+ for(i=0; i<LENGTHOF(writeable); ++i) {
+ printf("writeable-alias backing buffer[%d]=0x%lx after re-extract\n",
+ i, writeable[i]);
+ }
+}
+
+// sample code for UnicodeString instantiations ----------------------------- ***
+
+static void
+demoUnicodeStringInit() {
+ // *** Make sure to read about invariant characters in utypes.h! ***
+ // Initialization of Unicode strings from C literals works _only_ for
+ // invariant characters!
+
+ printf("\n* demoUnicodeStringInit() ---------- ***\n\n");
+
+ // the string literal is 32 chars long - this must be counted for the macro
+ UnicodeString invariantOnly=UNICODE_STRING("such characters are safe 123 %-.", 32);
+
+ /*
+ * In C, we need two macros: one to declare the UChar[] array, and
+ * one to populate it; the second one is a noop on platforms where
+ * wchar_t is compatible with UChar and ASCII-based.
+ * The length of the string literal must be counted for both macros.
+ */
+ /* declare the invString array for the string */
+ U_STRING_DECL(invString, "such characters are safe 123 %-.", 32);
+ /* populate it with the characters */
+ U_STRING_INIT(invString, "such characters are safe 123 %-.", 32);
+
+ // compare the C and C++ strings
+ printf("C and C++ Unicode strings are equal: %d\n", invariantOnly==UnicodeString(TRUE, invString, 32));
+
+ /*
+ * convert between char * and UChar * strings that
+ * contain only invariant characters
+ */
+ static const char *cs1="such characters are safe 123 %-.";
+ static UChar us1[40];
+ static char cs2[40];
+ u_charsToUChars(cs1, us1, 33); /* include the terminating NUL */
+ u_UCharsToChars(us1, cs2, 33);
+ printf("char * -> UChar * -> char * with only "
+ "invariant characters: \"%s\"\n",
+ cs2);
+
+ // initialize a UnicodeString from a string literal that contains
+ // escape sequences written with invariant characters
+ // do not forget to duplicate the backslashes for ICU to see them
+ // then, count each double backslash only once!
+ UnicodeString german=UNICODE_STRING(
+ "Sch\\u00f6nes Auto: \\u20ac 11240.\\fPrivates Zeichen: \\U00102345\\n", 64).
+ unescape();
+ printUnicodeString("german UnicodeString from unescaping:\n ", german);
+
+ /*
+ * C: convert and unescape a char * string with only invariant
+ * characters to fill a UChar * string
+ */
+ UChar buffer[200];
+ int32_t length;
+ length=u_unescape(
+ "Sch\\u00f6nes Auto: \\u20ac 11240.\\fPrivates Zeichen: \\U00102345\\n",
+ buffer, LENGTHOF(buffer));
+ printf("german C Unicode string from char * unescaping: (length %d)\n ", length);
+ printUnicodeString("", UnicodeString(buffer));
+}
+
+extern int
+main(int argc, const char *argv[]) {
+ UErrorCode errorCode=U_ZERO_ERROR;
+
+ // Note: Using a global variable for any object is not exactly thread-safe...
+
+ // You can change this call to e.g. ucnv_open("UTF-8", &errorCode) if you pipe
+ // the output to a file and look at it with a Unicode-capable editor.
+ // This will currently affect only the printUString() function, see the code above.
+ // printUnicodeString() could use this, too, by changing to an extract() overload
+ // that takes a UConverter argument.
+ cnv=ucnv_open(NULL, &errorCode);
+ if(U_FAILURE(errorCode)) {
+ fprintf(stderr, "error %s opening the default converter\n", u_errorName(errorCode));
+ return errorCode;
+ }
+
+ ucnv_setFromUCallBack(cnv, UCNV_FROM_U_CALLBACK_ESCAPE, UCNV_ESCAPE_C, NULL, NULL, &errorCode);
+ if(U_FAILURE(errorCode)) {
+ fprintf(stderr, "error %s setting the escape callback in the default converter\n", u_errorName(errorCode));
+ ucnv_close(cnv);
+ return errorCode;
+ }
+
+ demo_utf_h_macros();
+ demo_C_Unicode_strings();
+ demoCaseMapInC();
+ demoCaseMapInCPlusPlus();
+ demoUnicodeStringStorage();
+ demoUnicodeStringInit();
+
+ ucnv_close(cnv);
+ return 0;
+}