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/*
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* debug.c: debugging messages
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* Copyright (C) 2007, 2010 Colin Watson.
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*
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* This file is part of libpipeline.
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*
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* libpipeline 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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*
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* libpipeline is distributed in the hope that it will be useful, but
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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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* General Public License for more details.
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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 libpipeline; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
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* USA
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <stdlib.h>
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#include <stdio.h>
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#include <stdarg.h>
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#include <string.h>
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#include <errno.h>
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#include "pipeline-private.h"
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int debug_level = 0;
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void init_debug (void)
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{
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static int inited = 0;
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const char *pipeline_debug;
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if (inited)
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return;
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inited = 1;
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pipeline_debug = getenv ("PIPELINE_DEBUG");
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if (pipeline_debug && !strcmp (pipeline_debug, "1"))
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debug_level = 1;
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}
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static void vdebug (const char *message, va_list args)
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{
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if (debug_level)
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vfprintf (stderr, message, args);
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}
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void debug (const char *message, ...)
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{
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init_debug ();
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if (debug_level) {
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va_list args;
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va_start (args, message);
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vdebug (message, args);
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va_end (args);
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}
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}
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