summaryrefslogtreecommitdiffstats
path: root/intl/icu/source/io/sprintf.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'intl/icu/source/io/sprintf.cpp')
-rw-r--r--intl/icu/source/io/sprintf.cpp274
1 files changed, 274 insertions, 0 deletions
diff --git a/intl/icu/source/io/sprintf.cpp b/intl/icu/source/io/sprintf.cpp
new file mode 100644
index 0000000000..48d9bcc27c
--- /dev/null
+++ b/intl/icu/source/io/sprintf.cpp
@@ -0,0 +1,274 @@
+// © 2016 and later: Unicode, Inc. and others.
+// License & terms of use: http://www.unicode.org/copyright.html
+/*
+******************************************************************************
+*
+* Copyright (C) 2001-2014, International Business Machines
+* Corporation and others. All Rights Reserved.
+*
+******************************************************************************
+*
+* File sprintf.c
+*
+* Modification History:
+*
+* Date Name Description
+* 02/08/2001 george Creation. Copied from uprintf.c
+* 03/27/2002 Mark Schneckloth Many fixes regarding alignment, null termination
+* (mschneckloth@atomz.com) and other various problems.
+* 08/07/2003 george Reunify printf implementations
+*******************************************************************************
+*/
+
+#include "unicode/utypes.h"
+
+#if !UCONFIG_NO_FORMATTING && !UCONFIG_NO_CONVERSION
+
+#include "unicode/ustdio.h"
+#include "unicode/ustring.h"
+#include "unicode/putil.h"
+
+#include "uprintf.h"
+#include "locbund.h"
+
+#include "cmemory.h"
+#include <ctype.h>
+
+/* u_minstrncpy copies the minimum number of code units of (count or output->available) */
+static int32_t
+u_sprintf_write(void *context,
+ const char16_t *str,
+ int32_t count)
+{
+ u_localized_print_string *output = (u_localized_print_string *)context;
+
+ /* just calculating buffer size */
+ if (output->str == 0) {
+ return count;
+ }
+
+ int32_t size = ufmt_min(count, output->available);
+
+ u_strncpy(output->str + (output->len - output->available), str, size);
+ output->available -= size;
+ return size;
+}
+
+static int32_t
+u_sprintf_pad_and_justify(void *context,
+ const u_printf_spec_info *info,
+ const char16_t *result,
+ int32_t resultLen)
+{
+ u_localized_print_string *output = (u_localized_print_string *)context;
+ int32_t written = 0;
+ int32_t lengthOfResult = resultLen;
+
+ /* just calculating buffer size */
+ if (output->str == 0 &&
+ info->fWidth != -1 && resultLen < info->fWidth) {
+ return info->fWidth;
+ }
+
+ resultLen = ufmt_min(resultLen, output->available);
+
+ /* pad and justify, if needed */
+ if(info->fWidth != -1 && resultLen < info->fWidth) {
+ int32_t paddingLeft = info->fWidth - resultLen;
+ int32_t outputPos = output->len - output->available;
+
+ if (paddingLeft + resultLen > output->available) {
+ paddingLeft = output->available - resultLen;
+ if (paddingLeft < 0) {
+ paddingLeft = 0;
+ }
+ /* paddingLeft = output->available - resultLen;*/
+ }
+ written += paddingLeft;
+
+ /* left justify */
+ if(info->fLeft) {
+ written += u_sprintf_write(output, result, resultLen);
+ u_memset(&output->str[outputPos + resultLen], info->fPadChar, paddingLeft);
+ output->available -= paddingLeft;
+ }
+ /* right justify */
+ else {
+ u_memset(&output->str[outputPos], info->fPadChar, paddingLeft);
+ output->available -= paddingLeft;
+ written += u_sprintf_write(output, result, resultLen);
+ }
+ }
+ /* just write the formatted output */
+ else {
+ written = u_sprintf_write(output, result, resultLen);
+ }
+
+ if (written >= 0 && lengthOfResult > written) {
+ return lengthOfResult;
+ }
+
+ return written;
+}
+
+U_CAPI int32_t U_EXPORT2
+u_sprintf(char16_t *buffer,
+ const char *patternSpecification,
+ ... )
+{
+ va_list ap;
+ int32_t written;
+
+ va_start(ap, patternSpecification);
+ written = u_vsnprintf(buffer, INT32_MAX, patternSpecification, ap);
+ va_end(ap);
+
+ return written;
+}
+
+U_CAPI int32_t U_EXPORT2
+u_sprintf_u(char16_t *buffer,
+ const char16_t *patternSpecification,
+ ... )
+{
+ va_list ap;
+ int32_t written;
+
+ va_start(ap, patternSpecification);
+ written = u_vsnprintf_u(buffer, INT32_MAX, patternSpecification, ap);
+ va_end(ap);
+
+ return written;
+}
+
+U_CAPI int32_t U_EXPORT2 /* U_CAPI ... U_EXPORT2 added by Peter Kirk 17 Nov 2001 */
+u_vsprintf(char16_t *buffer,
+ const char *patternSpecification,
+ va_list ap)
+{
+ return u_vsnprintf(buffer, INT32_MAX, patternSpecification, ap);
+}
+
+U_CAPI int32_t U_EXPORT2
+u_snprintf(char16_t *buffer,
+ int32_t count,
+ const char *patternSpecification,
+ ... )
+{
+ va_list ap;
+ int32_t written;
+
+ va_start(ap, patternSpecification);
+ written = u_vsnprintf(buffer, count, patternSpecification, ap);
+ va_end(ap);
+
+ return written;
+}
+
+U_CAPI int32_t U_EXPORT2
+u_snprintf_u(char16_t *buffer,
+ int32_t count,
+ const char16_t *patternSpecification,
+ ... )
+{
+ va_list ap;
+ int32_t written;
+
+ va_start(ap, patternSpecification);
+ written = u_vsnprintf_u(buffer, count, patternSpecification, ap);
+ va_end(ap);
+
+ return written;
+}
+
+U_CAPI int32_t U_EXPORT2 /* U_CAPI ... U_EXPORT2 added by Peter Kirk 17 Nov 2001 */
+u_vsnprintf(char16_t *buffer,
+ int32_t count,
+ const char *patternSpecification,
+ va_list ap)
+{
+ int32_t written;
+ char16_t *pattern;
+ char16_t patBuffer[UFMT_DEFAULT_BUFFER_SIZE];
+ int32_t size = (int32_t)strlen(patternSpecification) + 1;
+
+ /* convert from the default codepage to Unicode */
+ if (size >= (int32_t)MAX_UCHAR_BUFFER_SIZE(patBuffer)) {
+ pattern = (char16_t *)uprv_malloc(size * sizeof(char16_t));
+ if(pattern == 0) {
+ return 0;
+ }
+ }
+ else {
+ pattern = patBuffer;
+ }
+ u_charsToUChars(patternSpecification, pattern, size);
+
+ /* do the work */
+ written = u_vsnprintf_u(buffer, count, pattern, ap);
+
+ /* clean up */
+ if (pattern != patBuffer) {
+ uprv_free(pattern);
+ }
+
+ return written;
+}
+
+U_CAPI int32_t U_EXPORT2
+u_vsprintf_u(char16_t *buffer,
+ const char16_t *patternSpecification,
+ va_list ap)
+{
+ return u_vsnprintf_u(buffer, INT32_MAX, patternSpecification, ap);
+}
+
+static const u_printf_stream_handler g_sprintf_stream_handler = {
+ u_sprintf_write,
+ u_sprintf_pad_and_justify
+};
+
+U_CAPI int32_t U_EXPORT2 /* U_CAPI ... U_EXPORT2 added by Peter Kirk 17 Nov 2001 */
+u_vsnprintf_u(char16_t *buffer,
+ int32_t count,
+ const char16_t *patternSpecification,
+ va_list ap)
+{
+ int32_t written = 0; /* haven't written anything yet */
+ int32_t result = 0; /* test the return value of u_printf_parse */
+
+ u_localized_print_string outStr;
+
+ if (count < 0) {
+ count = INT32_MAX;
+ }
+
+ outStr.str = buffer;
+ outStr.len = count;
+ outStr.available = count;
+
+ if(u_locbund_init(&outStr.fBundle, "en_US_POSIX") == 0) {
+ return 0;
+ }
+
+ /* parse and print the whole format string */
+ result = u_printf_parse(&g_sprintf_stream_handler, patternSpecification, &outStr, &outStr, &outStr.fBundle, &written, ap);
+
+ /* Terminate the buffer, if there's room. */
+ if (outStr.available > 0) {
+ buffer[outStr.len - outStr.available] = 0x0000;
+ }
+
+ /* Release the cloned bundle, if we cloned it. */
+ u_locbund_close(&outStr.fBundle);
+
+ /* parsing error */
+ if (result < 0) {
+ return result;
+ }
+ /* return # of UChars written */
+ return written;
+}
+
+#endif /* #if !UCONFIG_NO_FORMATTING */
+
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-15 20:50:16 +0000