From 77eb2d3fdcec5c978c64e025ced2764c57c00285 Mon Sep 17 00:00:00 2001
From: shumkovnd <shumkovnd@yandex-team.com>
Date: Fri, 10 Nov 2023 14:39:34 +0300
Subject: KIKIMR-19287: add task_stats_drawing script
---
.../extern/agg24-svn/include/util/agg_color_conv.h | 128 ++++++
.../agg24-svn/include/util/agg_color_conv_rgb8.h | 476 +++++++++++++++++++++
2 files changed, 604 insertions(+)
create mode 100644 contrib/python/matplotlib/py3/extern/agg24-svn/include/util/agg_color_conv.h
create mode 100644 contrib/python/matplotlib/py3/extern/agg24-svn/include/util/agg_color_conv_rgb8.h
(limited to 'contrib/python/matplotlib/py3/extern/agg24-svn/include/util')
diff --git a/contrib/python/matplotlib/py3/extern/agg24-svn/include/util/agg_color_conv.h b/contrib/python/matplotlib/py3/extern/agg24-svn/include/util/agg_color_conv.h
new file mode 100644
index 0000000000..8b8a0a55d2
--- /dev/null
+++ b/contrib/python/matplotlib/py3/extern/agg24-svn/include/util/agg_color_conv.h
@@ -0,0 +1,128 @@
+//----------------------------------------------------------------------------
+// Anti-Grain Geometry - Version 2.4
+// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
+//
+// Permission to copy, use, modify, sell and distribute this software
+// is granted provided this copyright notice appears in all copies.
+// This software is provided "as is" without express or implied
+// warranty, and with no claim as to its suitability for any purpose.
+//
+//----------------------------------------------------------------------------
+// Contact: mcseem@antigrain.com
+// mcseemagg@yahoo.com
+// http://www.antigrain.com
+//----------------------------------------------------------------------------
+//
+// Conversion from one colorspace/pixel format to another
+//
+//----------------------------------------------------------------------------
+
+#ifndef AGG_COLOR_CONV_INCLUDED
+#define AGG_COLOR_CONV_INCLUDED
+
+#include <string.h>
+#include "agg_basics.h"
+#include "agg_rendering_buffer.h"
+
+
+
+
+namespace agg
+{
+
+ //--------------------------------------------------------------color_conv
+ template<class RenBuf, class CopyRow>
+ void color_conv(RenBuf* dst, const RenBuf* src, CopyRow copy_row_functor)
+ {
+ unsigned width = src->width();
+ unsigned height = src->height();
+
+ if(dst->width() < width) width = dst->width();
+ if(dst->height() < height) height = dst->height();
+
+ if(width)
+ {
+ unsigned y;
+ for(y = 0; y < height; y++)
+ {
+ copy_row_functor(dst->row_ptr(0, y, width),
+ src->row_ptr(y),
+ width);
+ }
+ }
+ }
+
+
+ //---------------------------------------------------------color_conv_row
+ template<class CopyRow>
+ void color_conv_row(int8u* dst,
+ const int8u* src,
+ unsigned width,
+ CopyRow copy_row_functor)
+ {
+ copy_row_functor(dst, src, width);
+ }
+
+
+ //---------------------------------------------------------color_conv_same
+ template<int BPP> class color_conv_same
+ {
+ public:
+ void operator () (int8u* dst,
+ const int8u* src,
+ unsigned width) const
+ {
+ memmove(dst, src, width*BPP);
+ }
+ };
+
+
+ // Generic pixel converter.
+ template<class DstFormat, class SrcFormat>
+ struct conv_pixel
+ {
+ void operator()(void* dst, const void* src) const
+ {
+ // Read a pixel from the source format and write it to the destination format.
+ DstFormat::write_plain_color(dst, SrcFormat::read_plain_color(src));
+ }
+ };
+
+ // Generic row converter. Uses conv_pixel to convert individual pixels.
+ template<class DstFormat, class SrcFormat>
+ struct conv_row
+ {
+ void operator()(void* dst, const void* src, unsigned width) const
+ {
+ conv_pixel<DstFormat, SrcFormat> conv;
+ do
+ {
+ conv(dst, src);
+ dst = (int8u*)dst + DstFormat::pix_width;
+ src = (int8u*)src + SrcFormat::pix_width;
+ }
+ while (--width);
+ }
+ };
+
+ // Specialization for case where source and destination formats are identical.
+ template<class Format>
+ struct conv_row<Format, Format>
+ {
+ void operator()(void* dst, const void* src, unsigned width) const
+ {
+ memmove(dst, src, width * Format::pix_width);
+ }
+ };
+
+ // Top-level conversion function, converts one pixel format to any other.
+ template<class DstFormat, class SrcFormat, class RenBuf>
+ void convert(RenBuf* dst, const RenBuf* src)
+ {
+ color_conv(dst, src, conv_row<DstFormat, SrcFormat>());
+ }
+}
+
+
+
+#endif
diff --git a/contrib/python/matplotlib/py3/extern/agg24-svn/include/util/agg_color_conv_rgb8.h b/contrib/python/matplotlib/py3/extern/agg24-svn/include/util/agg_color_conv_rgb8.h
new file mode 100644
index 0000000000..609460dba4
--- /dev/null
+++ b/contrib/python/matplotlib/py3/extern/agg24-svn/include/util/agg_color_conv_rgb8.h
@@ -0,0 +1,476 @@
+//----------------------------------------------------------------------------
+// Anti-Grain Geometry - Version 2.4
+// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
+//
+// Permission to copy, use, modify, sell and distribute this software
+// is granted provided this copyright notice appears in all copies.
+// This software is provided "as is" without express or implied
+// warranty, and with no claim as to its suitability for any purpose.
+//
+//----------------------------------------------------------------------------
+// Contact: mcseem@antigrain.com
+// mcseemagg@yahoo.com
+// http://www.antigrain.com
+//----------------------------------------------------------------------------
+//
+// A set of functors used with color_conv(). See file agg_color_conv.h
+// These functors can convert images with up to 8 bits per component.
+// Use convertors in the following way:
+//
+// agg::color_conv(dst, src, agg::color_conv_XXXX_to_YYYY());
+// whare XXXX and YYYY can be any of:
+// rgb24
+// bgr24
+// rgba32
+// abgr32
+// argb32
+// bgra32
+// rgb555
+// rgb565
+//----------------------------------------------------------------------------
+
+#ifndef AGG_COLOR_CONV_RGB8_INCLUDED
+#define AGG_COLOR_CONV_RGB8_INCLUDED
+
+#include "agg_basics.h"
+#include "agg_color_conv.h"
+
+namespace agg
+{
+
+ //-----------------------------------------------------color_conv_rgb24
+ class color_conv_rgb24
+ {
+ public:
+ void operator () (int8u* dst,
+ const int8u* src,
+ unsigned width) const
+ {
+ do
+ {
+ int8u tmp[3];
+ tmp[0] = *src++;
+ tmp[1] = *src++;
+ tmp[2] = *src++;
+ *dst++ = tmp[2];
+ *dst++ = tmp[1];
+ *dst++ = tmp[0];
+ }
+ while(--width);
+ }
+ };
+
+ typedef color_conv_rgb24 color_conv_rgb24_to_bgr24;
+ typedef color_conv_rgb24 color_conv_bgr24_to_rgb24;
+
+ typedef color_conv_same<3> color_conv_bgr24_to_bgr24;
+ typedef color_conv_same<3> color_conv_rgb24_to_rgb24;
+
+
+
+ //------------------------------------------------------color_conv_rgba32
+ template<int I1, int I2, int I3, int I4> class color_conv_rgba32
+ {
+ public:
+ void operator () (int8u* dst,
+ const int8u* src,
+ unsigned width) const
+ {
+ do
+ {
+ int8u tmp[4];
+ tmp[0] = *src++;
+ tmp[1] = *src++;
+ tmp[2] = *src++;
+ tmp[3] = *src++;
+ *dst++ = tmp[I1];
+ *dst++ = tmp[I2];
+ *dst++ = tmp[I3];
+ *dst++ = tmp[I4];
+ }
+ while(--width);
+ }
+ };
+
+
+ //------------------------------------------------------------------------
+ typedef color_conv_rgba32<0,3,2,1> color_conv_argb32_to_abgr32; //----color_conv_argb32_to_abgr32
+ typedef color_conv_rgba32<3,2,1,0> color_conv_argb32_to_bgra32; //----color_conv_argb32_to_bgra32
+ typedef color_conv_rgba32<1,2,3,0> color_conv_argb32_to_rgba32; //----color_conv_argb32_to_rgba32
+ typedef color_conv_rgba32<3,0,1,2> color_conv_bgra32_to_abgr32; //----color_conv_bgra32_to_abgr32
+ typedef color_conv_rgba32<3,2,1,0> color_conv_bgra32_to_argb32; //----color_conv_bgra32_to_argb32
+ typedef color_conv_rgba32<2,1,0,3> color_conv_bgra32_to_rgba32; //----color_conv_bgra32_to_rgba32
+ typedef color_conv_rgba32<3,2,1,0> color_conv_rgba32_to_abgr32; //----color_conv_rgba32_to_abgr32
+ typedef color_conv_rgba32<3,0,1,2> color_conv_rgba32_to_argb32; //----color_conv_rgba32_to_argb32
+ typedef color_conv_rgba32<2,1,0,3> color_conv_rgba32_to_bgra32; //----color_conv_rgba32_to_bgra32
+ typedef color_conv_rgba32<0,3,2,1> color_conv_abgr32_to_argb32; //----color_conv_abgr32_to_argb32
+ typedef color_conv_rgba32<1,2,3,0> color_conv_abgr32_to_bgra32; //----color_conv_abgr32_to_bgra32
+ typedef color_conv_rgba32<3,2,1,0> color_conv_abgr32_to_rgba32; //----color_conv_abgr32_to_rgba32
+
+ //------------------------------------------------------------------------
+ typedef color_conv_same<4> color_conv_rgba32_to_rgba32; //----color_conv_rgba32_to_rgba32
+ typedef color_conv_same<4> color_conv_argb32_to_argb32; //----color_conv_argb32_to_argb32
+ typedef color_conv_same<4> color_conv_bgra32_to_bgra32; //----color_conv_bgra32_to_bgra32
+ typedef color_conv_same<4> color_conv_abgr32_to_abgr32; //----color_conv_abgr32_to_abgr32
+
+
+ //--------------------------------------------color_conv_rgb24_rgba32
+ template<int I1, int I2, int I3, int A> class color_conv_rgb24_rgba32
+ {
+ public:
+ void operator () (int8u* dst,
+ const int8u* src,
+ unsigned width) const
+ {
+ do
+ {
+ dst[I1] = *src++;
+ dst[I2] = *src++;
+ dst[I3] = *src++;
+ dst[A] = 255;
+ dst += 4;
+ }
+ while(--width);
+ }
+ };
+
+
+ //------------------------------------------------------------------------
+ typedef color_conv_rgb24_rgba32<1,2,3,0> color_conv_rgb24_to_argb32; //----color_conv_rgb24_to_argb32
+ typedef color_conv_rgb24_rgba32<3,2,1,0> color_conv_rgb24_to_abgr32; //----color_conv_rgb24_to_abgr32
+ typedef color_conv_rgb24_rgba32<2,1,0,3> color_conv_rgb24_to_bgra32; //----color_conv_rgb24_to_bgra32
+ typedef color_conv_rgb24_rgba32<0,1,2,3> color_conv_rgb24_to_rgba32; //----color_conv_rgb24_to_rgba32
+ typedef color_conv_rgb24_rgba32<3,2,1,0> color_conv_bgr24_to_argb32; //----color_conv_bgr24_to_argb32
+ typedef color_conv_rgb24_rgba32<1,2,3,0> color_conv_bgr24_to_abgr32; //----color_conv_bgr24_to_abgr32
+ typedef color_conv_rgb24_rgba32<0,1,2,3> color_conv_bgr24_to_bgra32; //----color_conv_bgr24_to_bgra32
+ typedef color_conv_rgb24_rgba32<2,1,0,3> color_conv_bgr24_to_rgba32; //----color_conv_bgr24_to_rgba32
+
+
+
+ //-------------------------------------------------color_conv_rgba32_rgb24
+ template<int I1, int I2, int I3> class color_conv_rgba32_rgb24
+ {
+ public:
+ void operator () (int8u* dst,
+ const int8u* src,
+ unsigned width) const
+ {
+ do
+ {
+ *dst++ = src[I1];
+ *dst++ = src[I2];
+ *dst++ = src[I3];
+ src += 4;
+ }
+ while(--width);
+ }
+ };
+
+
+
+ //------------------------------------------------------------------------
+ typedef color_conv_rgba32_rgb24<1,2,3> color_conv_argb32_to_rgb24; //----color_conv_argb32_to_rgb24
+ typedef color_conv_rgba32_rgb24<3,2,1> color_conv_abgr32_to_rgb24; //----color_conv_abgr32_to_rgb24
+ typedef color_conv_rgba32_rgb24<2,1,0> color_conv_bgra32_to_rgb24; //----color_conv_bgra32_to_rgb24
+ typedef color_conv_rgba32_rgb24<0,1,2> color_conv_rgba32_to_rgb24; //----color_conv_rgba32_to_rgb24
+ typedef color_conv_rgba32_rgb24<3,2,1> color_conv_argb32_to_bgr24; //----color_conv_argb32_to_bgr24
+ typedef color_conv_rgba32_rgb24<1,2,3> color_conv_abgr32_to_bgr24; //----color_conv_abgr32_to_bgr24
+ typedef color_conv_rgba32_rgb24<0,1,2> color_conv_bgra32_to_bgr24; //----color_conv_bgra32_to_bgr24
+ typedef color_conv_rgba32_rgb24<2,1,0> color_conv_rgba32_to_bgr24; //----color_conv_rgba32_to_bgr24
+
+
+ //------------------------------------------------color_conv_rgb555_rgb24
+ template<int R, int B> class color_conv_rgb555_rgb24
+ {
+ public:
+ void operator () (int8u* dst,
+ const int8u* src,
+ unsigned width) const
+ {
+ do
+ {
+ unsigned rgb = *(int16u*)src;
+ dst[R] = (int8u)((rgb >> 7) & 0xF8);
+ dst[1] = (int8u)((rgb >> 2) & 0xF8);
+ dst[B] = (int8u)((rgb << 3) & 0xF8);
+ src += 2;
+ dst += 3;
+ }
+ while(--width);
+ }
+ };
+
+
+ //------------------------------------------------------------------------
+ typedef color_conv_rgb555_rgb24<2,0> color_conv_rgb555_to_bgr24; //----color_conv_rgb555_to_bgr24
+ typedef color_conv_rgb555_rgb24<0,2> color_conv_rgb555_to_rgb24; //----color_conv_rgb555_to_rgb24
+
+
+ //-------------------------------------------------color_conv_rgb24_rgb555
+ template<int R, int B> class color_conv_rgb24_rgb555
+ {
+ public:
+ void operator () (int8u* dst,
+ const int8u* src,
+ unsigned width) const
+ {
+ do
+ {
+ *(int16u*)dst = (int16u)(((unsigned(src[R]) << 7) & 0x7C00) |
+ ((unsigned(src[1]) << 2) & 0x3E0) |
+ ((unsigned(src[B]) >> 3)));
+ src += 3;
+ dst += 2;
+ }
+ while(--width);
+ }
+ };
+
+
+ //------------------------------------------------------------------------
+ typedef color_conv_rgb24_rgb555<2,0> color_conv_bgr24_to_rgb555; //----color_conv_bgr24_to_rgb555
+ typedef color_conv_rgb24_rgb555<0,2> color_conv_rgb24_to_rgb555; //----color_conv_rgb24_to_rgb555
+
+
+ //-------------------------------------------------color_conv_rgb565_rgb24
+ template<int R, int B> class color_conv_rgb565_rgb24
+ {
+ public:
+ void operator () (int8u* dst,
+ const int8u* src,
+ unsigned width) const
+ {
+ do
+ {
+ unsigned rgb = *(int16u*)src;
+ dst[R] = (rgb >> 8) & 0xF8;
+ dst[1] = (rgb >> 3) & 0xFC;
+ dst[B] = (rgb << 3) & 0xF8;
+ src += 2;
+ dst += 3;
+ }
+ while(--width);
+ }
+ };
+
+
+ //------------------------------------------------------------------------
+ typedef color_conv_rgb565_rgb24<2,0> color_conv_rgb565_to_bgr24; //----color_conv_rgb565_to_bgr24
+ typedef color_conv_rgb565_rgb24<0,2> color_conv_rgb565_to_rgb24; //----color_conv_rgb565_to_rgb24
+
+
+ //-------------------------------------------------color_conv_rgb24_rgb565
+ template<int R, int B> class color_conv_rgb24_rgb565
+ {
+ public:
+ void operator () (int8u* dst,
+ const int8u* src,
+ unsigned width) const
+ {
+ do
+ {
+ *(int16u*)dst = (int16u)(((unsigned(src[R]) << 8) & 0xF800) |
+ ((unsigned(src[1]) << 3) & 0x7E0) |
+ ((unsigned(src[B]) >> 3)));
+ src += 3;
+ dst += 2;
+ }
+ while(--width);
+ }
+ };
+
+
+ //------------------------------------------------------------------------
+ typedef color_conv_rgb24_rgb565<2,0> color_conv_bgr24_to_rgb565; //----color_conv_bgr24_to_rgb565
+ typedef color_conv_rgb24_rgb565<0,2> color_conv_rgb24_to_rgb565; //----color_conv_rgb24_to_rgb565
+
+
+
+ //-------------------------------------------------color_conv_rgb555_rgba32
+ template<int R, int G, int B, int A> class color_conv_rgb555_rgba32
+ {
+ public:
+ void operator () (int8u* dst,
+ const int8u* src,
+ unsigned width) const
+ {
+ do
+ {
+ int rgb = *(int16*)src;
+ dst[R] = (int8u)((rgb >> 7) & 0xF8);
+ dst[G] = (int8u)((rgb >> 2) & 0xF8);
+ dst[B] = (int8u)((rgb << 3) & 0xF8);
+ dst[A] = (int8u)(rgb >> 15);
+ src += 2;
+ dst += 4;
+ }
+ while(--width);
+ }
+ };
+
+
+ //------------------------------------------------------------------------
+ typedef color_conv_rgb555_rgba32<1,2,3,0> color_conv_rgb555_to_argb32; //----color_conv_rgb555_to_argb32
+ typedef color_conv_rgb555_rgba32<3,2,1,0> color_conv_rgb555_to_abgr32; //----color_conv_rgb555_to_abgr32
+ typedef color_conv_rgb555_rgba32<2,1,0,3> color_conv_rgb555_to_bgra32; //----color_conv_rgb555_to_bgra32
+ typedef color_conv_rgb555_rgba32<0,1,2,3> color_conv_rgb555_to_rgba32; //----color_conv_rgb555_to_rgba32
+
+
+ //------------------------------------------------color_conv_rgba32_rgb555
+ template<int R, int G, int B, int A> class color_conv_rgba32_rgb555
+ {
+ public:
+ void operator () (int8u* dst,
+ const int8u* src,
+ unsigned width) const
+ {
+ do
+ {
+ *(int16u*)dst = (int16u)(((unsigned(src[R]) << 7) & 0x7C00) |
+ ((unsigned(src[G]) << 2) & 0x3E0) |
+ ((unsigned(src[B]) >> 3)) |
+ ((unsigned(src[A]) << 8) & 0x8000));
+ src += 4;
+ dst += 2;
+ }
+ while(--width);
+ }
+ };
+
+
+ //------------------------------------------------------------------------
+ typedef color_conv_rgba32_rgb555<1,2,3,0> color_conv_argb32_to_rgb555; //----color_conv_argb32_to_rgb555
+ typedef color_conv_rgba32_rgb555<3,2,1,0> color_conv_abgr32_to_rgb555; //----color_conv_abgr32_to_rgb555
+ typedef color_conv_rgba32_rgb555<2,1,0,3> color_conv_bgra32_to_rgb555; //----color_conv_bgra32_to_rgb555
+ typedef color_conv_rgba32_rgb555<0,1,2,3> color_conv_rgba32_to_rgb555; //----color_conv_rgba32_to_rgb555
+
+
+
+ //------------------------------------------------color_conv_rgb565_rgba32
+ template<int R, int G, int B, int A> class color_conv_rgb565_rgba32
+ {
+ public:
+ void operator () (int8u* dst,
+ const int8u* src,
+ unsigned width) const
+ {
+ do
+ {
+ int rgb = *(int16*)src;
+ dst[R] = (rgb >> 8) & 0xF8;
+ dst[G] = (rgb >> 3) & 0xFC;
+ dst[B] = (rgb << 3) & 0xF8;
+ dst[A] = 255;
+ src += 2;
+ dst += 4;
+ }
+ while(--width);
+ }
+ };
+
+
+ //------------------------------------------------------------------------
+ typedef color_conv_rgb565_rgba32<1,2,3,0> color_conv_rgb565_to_argb32; //----color_conv_rgb565_to_argb32
+ typedef color_conv_rgb565_rgba32<3,2,1,0> color_conv_rgb565_to_abgr32; //----color_conv_rgb565_to_abgr32
+ typedef color_conv_rgb565_rgba32<2,1,0,3> color_conv_rgb565_to_bgra32; //----color_conv_rgb565_to_bgra32
+ typedef color_conv_rgb565_rgba32<0,1,2,3> color_conv_rgb565_to_rgba32; //----color_conv_rgb565_to_rgba32
+
+
+ //------------------------------------------------color_conv_rgba32_rgb565
+ template<int R, int G, int B> class color_conv_rgba32_rgb565
+ {
+ public:
+ void operator () (int8u* dst,
+ const int8u* src,
+ unsigned width) const
+ {
+ do
+ {
+ *(int16u*)dst = (int16u)(((unsigned(src[R]) << 8) & 0xF800) |
+ ((unsigned(src[G]) << 3) & 0x7E0) |
+ ((unsigned(src[B]) >> 3)));
+ src += 4;
+ dst += 2;
+ }
+ while(--width);
+ }
+ };
+
+
+ //------------------------------------------------------------------------
+ typedef color_conv_rgba32_rgb565<1,2,3> color_conv_argb32_to_rgb565; //----color_conv_argb32_to_rgb565
+ typedef color_conv_rgba32_rgb565<3,2,1> color_conv_abgr32_to_rgb565; //----color_conv_abgr32_to_rgb565
+ typedef color_conv_rgba32_rgb565<2,1,0> color_conv_bgra32_to_rgb565; //----color_conv_bgra32_to_rgb565
+ typedef color_conv_rgba32_rgb565<0,1,2> color_conv_rgba32_to_rgb565; //----color_conv_rgba32_to_rgb565
+
+
+ //---------------------------------------------color_conv_rgb555_to_rgb565
+ class color_conv_rgb555_to_rgb565
+ {
+ public:
+ void operator () (int8u* dst,
+ const int8u* src,
+ unsigned width) const
+ {
+ do
+ {
+ unsigned rgb = *(int16u*)src;
+ *(int16u*)dst = (int16u)(((rgb << 1) & 0xFFC0) | (rgb & 0x1F));
+ src += 2;
+ dst += 2;
+ }
+ while(--width);
+ }
+ };
+
+
+ //----------------------------------------------color_conv_rgb565_to_rgb555
+ class color_conv_rgb565_to_rgb555
+ {
+ public:
+ void operator () (int8u* dst,
+ const int8u* src,
+ unsigned width) const
+ {
+ do
+ {
+ unsigned rgb = *(int16u*)src;
+ *(int16u*)dst = (int16u)(((rgb >> 1) & 0x7FE0) | (rgb & 0x1F));
+ src += 2;
+ dst += 2;
+ }
+ while(--width);
+ }
+ };
+
+
+ //------------------------------------------------------------------------
+ typedef color_conv_same<2> color_conv_rgb555_to_rgb555; //----color_conv_rgb555_to_rgb555
+ typedef color_conv_same<2> color_conv_rgb565_to_rgb565; //----color_conv_rgb565_to_rgb565
+
+
+ template<int R, int B> class color_conv_rgb24_gray8
+ {
+ public:
+ void operator () (int8u* dst,
+ const int8u* src,
+ unsigned width) const
+ {
+ do
+ {
+ *dst++ = (src[R]*77 + src[1]*150 + src[B]*29) >> 8;
+ src += 3;
+ }
+ while(--width);
+ }
+ };
+
+ typedef color_conv_rgb24_gray8<0,2> color_conv_rgb24_to_gray8; //----color_conv_rgb24_to_gray8
+ typedef color_conv_rgb24_gray8<2,0> color_conv_bgr24_to_gray8; //----color_conv_bgr24_to_gray8
+
+
+}
+
+
+
+#endif
--
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