Check in the pristine copy of ICU 4.6...

icu46/source/io/uprintf.c

+/*
+******************************************************************************
+*
+*   Copyright (C) 1998-2004, International Business Machines
+*   Corporation and others.  All Rights Reserved.
+*
+******************************************************************************
+*
+* File uprintf.c
+*
+* Modification History:
+*
+*   Date        Name        Description
+*   11/19/98    stephen     Creation.
+*   03/12/99    stephen     Modified for new C API.
+*                           Added conversion from default codepage.
+*   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/unum.h"
+#include "unicode/udat.h"
+#include "unicode/putil.h"
+
+#include "uprintf.h"
+#include "ufile.h"
+#include "locbund.h"
+
+#include "cmemory.h"
+
+static int32_t U_EXPORT2
+u_printf_write(void          *context,
+               const UChar   *str,
+               int32_t       count)
+{
+    return u_file_write(str, count, (UFILE *)context);
+}
+
+static int32_t
+u_printf_pad_and_justify(void                        *context,
+                         const u_printf_spec_info    *info,
+                         const UChar                 *result,
+                         int32_t                     resultLen)
+{
+    UFILE   *output = (UFILE *)context;
+    int32_t written, i;
+
+    /* pad and justify, if needed */
+    if(info->fWidth != -1 && resultLen < info->fWidth) {
+        /* left justify */
+        if(info->fLeft) {
+            written = u_file_write(result, resultLen, output);
+            for(i = 0; i < info->fWidth - resultLen; ++i) {
+                written += u_file_write(&info->fPadChar, 1, output);
+            }
+        }
+        /* right justify */
+        else {
+            written = 0;
+            for(i = 0; i < info->fWidth - resultLen; ++i) {
+                written += u_file_write(&info->fPadChar, 1, output);
+            }
+            written += u_file_write(result, resultLen, output);
+        }
+    }
+    /* just write the formatted output */
+    else {
+        written = u_file_write(result, resultLen, output);
+    }
+
+    return written;
+}
+
+U_CAPI int32_t U_EXPORT2 
+u_fprintf(    UFILE        *f,
+          const char    *patternSpecification,
+          ... )
+{
+    va_list ap;
+    int32_t count;
+
+    va_start(ap, patternSpecification);
+    count = u_vfprintf(f, patternSpecification, ap);
+    va_end(ap);
+
+    return count;
+}
+
+U_CAPI int32_t U_EXPORT2 
+u_fprintf_u(    UFILE        *f,
+            const UChar    *patternSpecification,
+            ... )
+{
+    va_list ap;
+    int32_t count;
+
+    va_start(ap, patternSpecification);
+    count = u_vfprintf_u(f, patternSpecification, ap);
+    va_end(ap);
+
+    return count;
+}
+
+U_CAPI int32_t  U_EXPORT2 /* U_CAPI ... U_EXPORT2 added by Peter Kirk 17 Nov 2001 */
+u_vfprintf(    UFILE        *f,
+           const char    *patternSpecification,
+           va_list        ap)
+{
+    int32_t count;
+    UChar *pattern;
+    UChar buffer[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(buffer)) {
+        pattern = (UChar *)uprv_malloc(size * sizeof(UChar));
+        if(pattern == 0) {
+            return 0;
+        }
+    }
+    else {
+        pattern = buffer;
+    }
+    u_charsToUChars(patternSpecification, pattern, size);
+
+    /* do the work */
+    count = u_vfprintf_u(f, pattern, ap);
+
+    /* clean up */
+    if (pattern != buffer) {
+        uprv_free(pattern);
+    }
+
+    return count;
+}
+
+static const u_printf_stream_handler g_stream_handler = {
+    u_printf_write,
+    u_printf_pad_and_justify
+};
+
+U_CAPI int32_t  U_EXPORT2 /* U_CAPI ... U_EXPORT2 added by Peter Kirk 17 Nov 2001 */
+u_vfprintf_u(    UFILE        *f,
+             const UChar    *patternSpecification,
+             va_list        ap)
+{
+    int32_t          written = 0;   /* haven't written anything yet */
+
+    /* parse and print the whole format string */
+    u_printf_parse(&g_stream_handler, patternSpecification, f, NULL, &f->str.fBundle, &written, ap);
+
+    /* return # of UChars written */
+    return written;
+}
+
+#endif /* #if !UCONFIG_NO_FORMATTING */
+