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#!/bin/bash
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#
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# svg_convertGplToHex.sh -- This function takes one palette produced
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# by Gimp (e.g., syslinux.gpl) as input and outputs the list of
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# hexadecimal colors and their respective index position the
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# `pnmtolss16' program needs (e.g., #RRGGBB=0 #RRGGBB=1 ... [all
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# values in the same line]).
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#
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# Copyright (C) 2009, 2010, 2011, 2012 The CentOS Project
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or (at
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# your option) any later version.
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![](https://seccdn.libravatar.org/avatar/6547be6a776b3f31e43b7f4b6dd82ebcede0f2d11be196e3a70e28760a760a3c?s=16&d=retro) |
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#
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![](https://seccdn.libravatar.org/avatar/6547be6a776b3f31e43b7f4b6dd82ebcede0f2d11be196e3a70e28760a760a3c?s=16&d=retro) |
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# This program is distributed in the hope that it will be useful, but
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![](https://seccdn.libravatar.org/avatar/6547be6a776b3f31e43b7f4b6dd82ebcede0f2d11be196e3a70e28760a760a3c?s=16&d=retro) |
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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![](https://seccdn.libravatar.org/avatar/6547be6a776b3f31e43b7f4b6dd82ebcede0f2d11be196e3a70e28760a760a3c?s=16&d=retro) |
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# General Public License for more details.
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![](https://seccdn.libravatar.org/avatar/6547be6a776b3f31e43b7f4b6dd82ebcede0f2d11be196e3a70e28760a760a3c?s=16&d=retro) |
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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#
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# ----------------------------------------------------------------------
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# $Id$
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# ----------------------------------------------------------------------
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function svg_convertGplToHex {
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# Define path to GPL palette. This is the .gpl file we use to
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# retrive color information from.
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local PALETTE_GPL="$1"
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# Define path to HEX palette. This is the palette used to stored
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# the color information the `ppmtolss16' program needs.
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local PALETTE_HEX="$2"
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# Define the number of colors this function should return.
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local NUMBER="$3"
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# Define list of colors from GPL palette.
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local COLORS=$(svg_getColors $PALETTE_GPL --head=$NUMBER --tail=$NUMBER)
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# Verify number of colors returned in the list. They must match
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# exactly the amount specified, no more no less. Sometimes, the
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# list of colors may have less colors than it should have, so we
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# need to prevent such palettes from being used.
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svg_checkColorAmount "$COLORS" "$NUMBER"
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# Verify format of colors.
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svg_checkColorFormats "$COLORS" --format='rrggbb'
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# Create list of colors to be processed by `pnmtolss16'.
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echo "$COLORS" | nl | gawk '{ printf "%s=%d ", $2, $1 - 1 }' \
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> $PALETTE_HEX
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# Verify HEX palette existence.
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cli_checkFiles -e $PALETTE_HEX
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}
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