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// © 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 UChar *str,
int32_t count)
{
u_localized_print_string *output = (u_localized_print_string *)context;
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 UChar *result,
int32_t resultLen)
{
u_localized_print_string *output = (u_localized_print_string *)context;
int32_t written = 0;
int32_t lengthOfResult = resultLen;
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(UChar *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(UChar *buffer,
const UChar *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(UChar *buffer,
const char *patternSpecification,
va_list ap)
{
return u_vsnprintf(buffer, INT32_MAX, patternSpecification, ap);
}
U_CAPI int32_t U_EXPORT2
u_snprintf(UChar *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(UChar *buffer,
int32_t count,
const UChar *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(UChar *buffer,
int32_t count,
const char *patternSpecification,
va_list ap)
{
int32_t written;
UChar *pattern;
UChar 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 = (UChar *)uprv_malloc(size * sizeof(UChar));
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(UChar *buffer,
const UChar *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(UChar *buffer,
int32_t count,
const UChar *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 */
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