The Tor Browser: intl/icu/source/io/sprintf.c@6474c204b198 (annotated)

intl/icu/source/io/sprintf.c@6474c204b198 (annotated)

intl/icu/source/io/sprintf.c

Wed, 31 Dec 2014 06:09:35 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 06:09:35 +0100
changeset 0: 6474c204b198
permissions: -rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

 /*
 ******************************************************************************
 *
 *   Copyright (C) 2001-2008, 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
 #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 >= 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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intl/icu/source/io/sprintf.c@6474c204b198 (annotated)

intl/icu/source/io/sprintf.c