| 1 | /* |
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| 2 | * libpipi Pathetic image processing interface library |
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| 3 | * Copyright (c) 2004-2008 Sam Hocevar <sam@zoy.org> |
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| 4 | * All Rights Reserved |
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| 5 | * |
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| 6 | * $Id$ |
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| 7 | * |
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| 8 | * This library is free software. It comes without any warranty, to |
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| 9 | * the extent permitted by applicable law. You can redistribute it |
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| 10 | * and/or modify it under the terms of the Do What The Fuck You Want |
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| 11 | * To Public License, Version 2, as published by Sam Hocevar. See |
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| 12 | * http://sam.zoy.org/wtfpl/COPYING for more details. |
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| 13 | */ |
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| 14 | |
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| 15 | /* pipi_template.h: the magic template preprocessing file |
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| 16 | * |
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| 17 | * Define the following macros before including this file: |
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| 18 | * * TEMPLATE_FLAGS is set to a list of toggle flags, a binary OR of: |
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| 19 | * - SET_FLAG_GRAY |
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| 20 | * - SET_FLAG_WRAP |
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| 21 | * - SET_FLAG_8BIT |
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| 22 | * * TEMPLATE_FILE is set to the template file. The following macros |
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| 23 | * will be defined when including it. Their value depend on the flags |
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| 24 | * specified above: |
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| 25 | * - FLAG_GRAY is set to 0 or 1 |
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| 26 | * - FLAG_WRAP is set to 0 or 1 |
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| 27 | * - FLAG_8BIT is set to 0 or 1 |
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| 28 | * - T(x) expands x by adding relevant information, eg. x##_gray_wrap |
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| 29 | */ |
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| 30 | |
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| 31 | #if !defined FLAG_GRAY |
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| 32 | # if (TEMPLATE_FLAGS) & SET_FLAG_GRAY |
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| 33 | # define FLAG_GRAY 1 |
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| 34 | # define T_GRAY(x) CAT(x, _gray) |
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| 35 | # include __FILE__ |
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| 36 | # undef FLAG_GRAY |
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| 37 | # undef T_GRAY |
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| 38 | # endif |
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| 39 | # define FLAG_GRAY 0 |
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| 40 | # define T_GRAY(x) x |
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| 41 | # include __FILE__ |
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| 42 | # undef FLAG_GRAY |
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| 43 | # undef T_GRAY |
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| 44 | |
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| 45 | #elif !defined FLAG_WRAP |
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| 46 | # if (TEMPLATE_FLAGS) & SET_FLAG_WRAP |
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| 47 | # define FLAG_WRAP 1 |
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| 48 | # define T_WRAP(x) CAT(x, _wrap) |
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| 49 | # include __FILE__ |
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| 50 | # undef FLAG_WRAP |
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| 51 | # undef T_WRAP |
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| 52 | # endif |
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| 53 | # define FLAG_WRAP 0 |
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| 54 | # define T_WRAP(x) x |
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| 55 | # include __FILE__ |
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| 56 | # undef FLAG_WRAP |
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| 57 | # undef T_WRAP |
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| 58 | |
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| 59 | #elif !defined FLAG_8BIT |
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| 60 | # if (TEMPLATE_FLAGS) & SET_FLAG_8BIT |
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| 61 | # define FLAG_8BIT 1 |
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| 62 | # define T_8BIT(x) CAT(x, _8bit) |
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| 63 | # include __FILE__ |
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| 64 | # undef FLAG_8BIT |
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| 65 | # undef T_8BIT |
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| 66 | # endif |
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| 67 | # define FLAG_8BIT 0 |
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| 68 | # define T_8BIT(x) x |
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| 69 | # include __FILE__ |
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| 70 | # undef FLAG_8BIT |
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| 71 | # undef T_8BIT |
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| 72 | |
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| 73 | #else |
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| 74 | # define CAT(x, y) x ## y |
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| 75 | # define T(x) T_8BIT(T_WRAP(T_GRAY(x))) |
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| 76 | # include TEMPLATE_FILE |
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| 77 | # undef CAT |
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| 78 | # undef S |
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| 79 | #endif |
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| 80 | |
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