689 lines
17 KiB
C
689 lines
17 KiB
C
/*
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* Copyright 2002 Red Hat Inc., Durham, North Carolina.
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*
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation on the rights to use, copy, modify, merge,
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* publish, distribute, sublicense, and/or sell copies of the Software,
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* and to permit persons to whom the Software is furnished to do so,
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* subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial
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* portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NON-INFRINGEMENT. IN NO EVENT SHALL RED HAT AND/OR THEIR SUPPLIERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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/*
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* Authors:
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* Rickard E. (Rik) Faith <faith@redhat.com>
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*
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*/
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/** \file
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*
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* This file provides support routines and helper functions to be used
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* by the DMX configuration file parser.
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*
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* Because the DMX configuration file parsing should be capable of being
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* used in a stand-alone fashion (i.e., independent from the DMX server
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* source tree), no dependencies on other DMX routines are made. */
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#ifdef HAVE_DMX_CONFIG_H
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#include <dmx-config.h>
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#endif
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdarg.h>
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#include "dmxparse.h"
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/** A general error logging routine that does not depend on the dmxLog
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* functions. */
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void
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dmxConfigLog(const char *format, ...)
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{
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va_list args;
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va_start(args, format);
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vprintf(format, args); /* RATS: All calls to dmxConfigLog from
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* dmxparse.c and dmxprint.c use a
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* trusted format. */
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va_end(args);
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}
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void *
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dmxConfigAlloc(unsigned long bytes)
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{
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void *area = calloc(1, bytes);
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if (!area) {
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dmxConfigLog("dmxConfigAlloc: out of memory\n");
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return NULL;
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}
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return area;
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}
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void *
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dmxConfigRealloc(void *orig, unsigned long orig_bytes, unsigned long bytes)
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{
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unsigned char *area = realloc(orig, bytes);
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if (!area) {
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dmxConfigLog("dmxConfigRealloc: out of memory\n");
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return NULL;
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}
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memset(area + orig_bytes, 0, bytes - orig_bytes);
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return area;
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}
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const char *
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dmxConfigCopyString(const char *string, int length)
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{
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char *copy;
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if (!length)
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length = strlen(string);
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copy = dmxConfigAlloc(length + 1);
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if (length)
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strncpy(copy, string, length);
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copy[length] = '\0';
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return copy;
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}
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void
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dmxConfigFree(void *area)
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{
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free(area);
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}
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DMXConfigTokenPtr
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dmxConfigCreateToken(int token, int line, const char *comment)
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{
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DMXConfigTokenPtr pToken = dmxConfigAlloc(sizeof(*pToken));
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pToken->token = token;
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pToken->line = line;
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pToken->comment = comment;
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return pToken;
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}
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void
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dmxConfigFreeToken(DMXConfigTokenPtr p)
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{
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if (!p)
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return;
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dmxConfigFree((void *) p->comment);
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dmxConfigFree(p);
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}
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DMXConfigStringPtr
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dmxConfigCreateString(int token, int line,
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const char *comment, const char *string)
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{
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DMXConfigStringPtr pString = dmxConfigAlloc(sizeof(*pString));
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pString->token = token;
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pString->line = line;
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pString->comment = comment;
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pString->string = string;
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return pString;
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}
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void
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dmxConfigFreeString(DMXConfigStringPtr p)
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{
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DMXConfigStringPtr next;
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if (!p)
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return;
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do {
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next = p->next;
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dmxConfigFree((void *) p->comment);
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dmxConfigFree((void *) p->string);
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dmxConfigFree(p);
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} while ((p = next));
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}
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DMXConfigNumberPtr
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dmxConfigCreateNumber(int token, int line, const char *comment, int number)
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{
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DMXConfigNumberPtr pNumber = dmxConfigAlloc(sizeof(*pNumber));
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pNumber->token = token;
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pNumber->line = line;
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pNumber->comment = comment;
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pNumber->number = number;
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return pNumber;
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}
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void
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dmxConfigFreeNumber(DMXConfigNumberPtr p)
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{
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if (!p)
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return;
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dmxConfigFree((void *) p->comment);
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dmxConfigFree(p);
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}
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DMXConfigPairPtr
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dmxConfigCreatePair(int token, int line,
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const char *comment, int x, int y, int xsign, int ysign)
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{
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DMXConfigPairPtr pPair = dmxConfigAlloc(sizeof(*pPair));
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pPair->token = token;
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pPair->line = line;
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pPair->comment = comment;
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pPair->x = x;
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pPair->y = y;
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pPair->xsign = (xsign < 0) ? -1 : 1;
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pPair->ysign = (ysign < 0) ? -1 : 1;
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return pPair;
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}
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void
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dmxConfigFreePair(DMXConfigPairPtr p)
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{
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if (!p)
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return;
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dmxConfigFree((void *) p->comment);
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dmxConfigFree(p);
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}
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DMXConfigCommentPtr
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dmxConfigCreateComment(int token, int line, const char *comment)
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{
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DMXConfigCommentPtr pComment = dmxConfigAlloc(sizeof(*pComment));
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pComment->token = token;
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pComment->line = line;
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pComment->comment = comment;
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return pComment;
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}
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void
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dmxConfigFreeComment(DMXConfigCommentPtr p)
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{
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if (!p)
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return;
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dmxConfigFree((void *) p->comment);
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dmxConfigFree(p);
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}
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DMXConfigPartDimPtr
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dmxConfigCreatePartDim(DMXConfigPairPtr pDim, DMXConfigPairPtr pOffset)
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{
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DMXConfigPartDimPtr pPart = dmxConfigAlloc(sizeof(*pPart));
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pPart->dim = pDim;
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pPart->offset = pOffset;
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return pPart;
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}
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void
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dmxConfigFreePartDim(DMXConfigPartDimPtr p)
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{
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if (!p)
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return;
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dmxConfigFreePair(p->dim);
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dmxConfigFreePair(p->offset);
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dmxConfigFree(p);
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}
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DMXConfigFullDimPtr
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dmxConfigCreateFullDim(DMXConfigPartDimPtr pScrn, DMXConfigPartDimPtr pRoot)
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{
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DMXConfigFullDimPtr pFull = dmxConfigAlloc(sizeof(*pFull));
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pFull->scrn = pScrn;
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pFull->root = pRoot;
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return pFull;
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}
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void
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dmxConfigFreeFullDim(DMXConfigFullDimPtr p)
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{
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if (!p)
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return;
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dmxConfigFreePartDim(p->scrn);
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dmxConfigFreePartDim(p->root);
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dmxConfigFree(p);
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}
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DMXConfigDisplayPtr
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dmxConfigCreateDisplay(DMXConfigTokenPtr pStart,
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DMXConfigStringPtr pName,
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DMXConfigFullDimPtr pDim,
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DMXConfigPairPtr pOrigin, DMXConfigTokenPtr pEnd)
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{
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DMXConfigDisplayPtr pDisplay = dmxConfigAlloc(sizeof(*pDisplay));
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pDisplay->start = pStart;
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pDisplay->dname = pName;
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pDisplay->dim = pDim;
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pDisplay->origin = pOrigin;
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pDisplay->end = pEnd;
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pDisplay->name = pName ? pName->string : NULL;
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pDisplay->rootXOrigin = pOrigin ? pOrigin->x : 0;
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pDisplay->rootYOrigin = pOrigin ? pOrigin->y : 0;
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if (pDim && pDim->scrn && pDim->scrn->dim) {
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pDisplay->scrnWidth = pDim->scrn->dim->x;
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pDisplay->scrnHeight = pDim->scrn->dim->y;
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}
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if (pDim && pDim->scrn && pDim->scrn->offset) {
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pDisplay->scrnX = pDim->scrn->offset->x;
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pDisplay->scrnY = pDim->scrn->offset->y;
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pDisplay->scrnXSign = pDim->scrn->offset->xsign;
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pDisplay->scrnYSign = pDim->scrn->offset->ysign;
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}
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if (pDim && pDim->root) {
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if (pDim->root->dim) {
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pDisplay->rootWidth = pDim->root->dim->x;
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pDisplay->rootHeight = pDim->root->dim->y;
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}
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if (pDim->root->offset) {
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pDisplay->rootX = pDim->root->offset->x;
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pDisplay->rootY = pDim->root->offset->y;
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pDisplay->rootXSign = pDim->root->offset->xsign;
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pDisplay->rootYSign = pDim->root->offset->ysign;
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}
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}
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else { /* If no root specification, copy width
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* and height from scrn -- leave offset
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* as zero, since it is relative to
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* scrn. */
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pDisplay->rootWidth = pDisplay->scrnWidth;
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pDisplay->rootHeight = pDisplay->scrnHeight;
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}
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return pDisplay;
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}
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void
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dmxConfigFreeDisplay(DMXConfigDisplayPtr p)
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{
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if (!p)
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return;
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dmxConfigFreeToken(p->start);
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dmxConfigFreeString(p->dname);
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dmxConfigFreeFullDim(p->dim);
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dmxConfigFreeToken(p->end);
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dmxConfigFree(p);
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}
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DMXConfigWallPtr
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dmxConfigCreateWall(DMXConfigTokenPtr pStart,
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DMXConfigPairPtr pWallDim,
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DMXConfigPairPtr pDisplayDim,
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DMXConfigStringPtr pNameList, DMXConfigTokenPtr pEnd)
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{
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DMXConfigWallPtr pWall = dmxConfigAlloc(sizeof(*pWall));
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pWall->start = pStart;
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pWall->wallDim = pWallDim;
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pWall->displayDim = pDisplayDim;
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pWall->nameList = pNameList;
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pWall->end = pEnd;
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pWall->width = pDisplayDim ? pDisplayDim->x : 0;
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pWall->height = pDisplayDim ? pDisplayDim->y : 0;
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pWall->xwall = pWallDim ? pWallDim->x : 0;
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pWall->ywall = pWallDim ? pWallDim->y : 0;
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return pWall;
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}
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void
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dmxConfigFreeWall(DMXConfigWallPtr p)
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{
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if (!p)
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return;
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dmxConfigFreeToken(p->start);
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dmxConfigFreePair(p->wallDim);
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dmxConfigFreePair(p->displayDim);
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dmxConfigFreeString(p->nameList);
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dmxConfigFreeToken(p->end);
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dmxConfigFree(p);
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}
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DMXConfigOptionPtr
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dmxConfigCreateOption(DMXConfigTokenPtr pStart,
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DMXConfigStringPtr pOption, DMXConfigTokenPtr pEnd)
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{
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int length = 0;
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int offset = 0;
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DMXConfigStringPtr p;
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DMXConfigOptionPtr option = dmxConfigAlloc(sizeof(*option));
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for (p = pOption; p; p = p->next) {
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if (p->string)
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length += strlen(p->string) + 1;
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}
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option->string = dmxConfigAlloc(length + 1);
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for (p = pOption; p; p = p->next) {
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if (p->string) {
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int len = strlen(p->string);
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strncpy(option->string + offset, p->string, len);
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offset += len;
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if (p->next)
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option->string[offset++] = ' ';
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}
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}
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option->string[offset] = '\0';
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option->start = pStart;
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option->option = pOption;
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option->end = pEnd;
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return option;
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}
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void
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dmxConfigFreeOption(DMXConfigOptionPtr p)
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{
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if (!p)
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return;
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free(p->string);
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dmxConfigFreeToken(p->start);
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dmxConfigFreeString(p->option);
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dmxConfigFreeToken(p->end);
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dmxConfigFree(p);
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}
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const char **
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dmxConfigLookupParam(DMXConfigParamPtr p, const char *key, int *argc)
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{
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DMXConfigParamPtr pt;
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for (pt = p; pt; pt = pt->next) {
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if (pt->argv && !strcasecmp(pt->argv[0], key)) {
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*argc = pt->argc;
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return pt->argv;
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}
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}
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*argc = 0;
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return NULL;
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}
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DMXConfigParamPtr
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dmxConfigCreateParam(DMXConfigTokenPtr pStart,
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DMXConfigTokenPtr pOpen,
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DMXConfigStringPtr pParam,
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DMXConfigTokenPtr pClose, DMXConfigTokenPtr pEnd)
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{
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DMXConfigParamPtr param = dmxConfigAlloc(sizeof(*param));
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DMXConfigStringPtr pt;
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param->argc = 0;
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param->argv = NULL;
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for (pt = pParam; pt; pt = pt->next) {
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if (pt->string) {
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param->argv = realloc(param->argv,
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(param->argc + 2) * sizeof(*param->argv));
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param->argv[param->argc] = pt->string;
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++param->argc;
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}
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}
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if (param->argv)
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param->argv[param->argc] = NULL;
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param->start = pStart;
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param->open = pOpen;
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param->param = pParam;
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param->close = pClose;
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param->end = pEnd;
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return param;
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}
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void
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dmxConfigFreeParam(DMXConfigParamPtr p)
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{
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DMXConfigParamPtr next;
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if (!p)
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return;
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do {
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next = p->next;
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dmxConfigFreeToken(p->start);
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dmxConfigFreeToken(p->open);
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dmxConfigFreeString(p->param);
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dmxConfigFreeToken(p->close);
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dmxConfigFreeToken(p->end);
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dmxConfigFree(p->argv);
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dmxConfigFree(p);
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} while ((p = next));
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}
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DMXConfigSubPtr
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dmxConfigCreateSub(DMXConfigType type,
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DMXConfigCommentPtr comment,
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DMXConfigDisplayPtr display,
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DMXConfigWallPtr wall,
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DMXConfigOptionPtr option, DMXConfigParamPtr param)
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{
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DMXConfigSubPtr pSub = dmxConfigAlloc(sizeof(*pSub));
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pSub->type = type;
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switch (type) {
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case dmxConfigComment:
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pSub->comment = comment;
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break;
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case dmxConfigDisplay:
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pSub->display = display;
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break;
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case dmxConfigWall:
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pSub->wall = wall;
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break;
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case dmxConfigOption:
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pSub->option = option;
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break;
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case dmxConfigParam:
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pSub->param = param;
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break;
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default:
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dmxConfigLog("Type %d not supported in subentry\n", type);
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break;
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}
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return pSub;
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}
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void
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dmxConfigFreeSub(DMXConfigSubPtr sub)
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{
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DMXConfigSubPtr pt;
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for (pt = sub; pt; pt = pt->next) {
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switch (pt->type) {
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case dmxConfigComment:
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dmxConfigFreeComment(pt->comment);
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break;
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case dmxConfigDisplay:
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dmxConfigFreeDisplay(pt->display);
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break;
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case dmxConfigWall:
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dmxConfigFreeWall(pt->wall);
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break;
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case dmxConfigOption:
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dmxConfigFreeOption(pt->option);
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break;
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case dmxConfigParam:
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dmxConfigFreeParam(pt->param);
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break;
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default:
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dmxConfigLog("Type %d not supported in subentry\n", pt->type);
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break;
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}
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}
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dmxConfigFree(sub);
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}
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DMXConfigSubPtr
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dmxConfigSubComment(DMXConfigCommentPtr comment)
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{
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return dmxConfigCreateSub(dmxConfigComment, comment, NULL, NULL, NULL,
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NULL);
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}
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DMXConfigSubPtr
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dmxConfigSubDisplay(DMXConfigDisplayPtr display)
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{
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return dmxConfigCreateSub(dmxConfigDisplay, NULL, display, NULL, NULL,
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NULL);
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}
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DMXConfigSubPtr
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dmxConfigSubWall(DMXConfigWallPtr wall)
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{
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return dmxConfigCreateSub(dmxConfigWall, NULL, NULL, wall, NULL, NULL);
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}
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DMXConfigSubPtr
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dmxConfigSubOption(DMXConfigOptionPtr option)
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{
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return dmxConfigCreateSub(dmxConfigOption, NULL, NULL, NULL, option, NULL);
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}
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DMXConfigSubPtr
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dmxConfigSubParam(DMXConfigParamPtr param)
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{
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return dmxConfigCreateSub(dmxConfigParam, NULL, NULL, NULL, NULL, param);
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}
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extern DMXConfigSubPtr
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dmxConfigAddSub(DMXConfigSubPtr head, DMXConfigSubPtr sub)
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{
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DMXConfigSubPtr pt;
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if (!head)
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return sub;
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for (pt = head; pt->next; pt = pt->next);
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pt->next = sub;
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return head;
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}
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DMXConfigVirtualPtr
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dmxConfigCreateVirtual(DMXConfigTokenPtr pStart,
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DMXConfigStringPtr pName,
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DMXConfigPairPtr pDim,
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DMXConfigTokenPtr pOpen,
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DMXConfigSubPtr pSubentry, DMXConfigTokenPtr pClose)
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{
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DMXConfigVirtualPtr pVirtual = dmxConfigAlloc(sizeof(*pVirtual));
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pVirtual->start = pStart;
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pVirtual->vname = pName;
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pVirtual->dim = pDim;
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pVirtual->open = pOpen;
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pVirtual->subentry = pSubentry;
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pVirtual->close = pClose;
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pVirtual->name = pName ? pName->string : NULL;
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pVirtual->width = pDim ? pDim->x : 0;
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pVirtual->height = pDim ? pDim->y : 0;
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return pVirtual;
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}
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void
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dmxConfigFreeVirtual(DMXConfigVirtualPtr virtual)
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{
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dmxConfigFreeToken(virtual->start);
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dmxConfigFreeString(virtual->vname);
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dmxConfigFreePair(virtual->dim);
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dmxConfigFreeToken(virtual->open);
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dmxConfigFreeSub(virtual->subentry);
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dmxConfigFreeToken(virtual->close);
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dmxConfigFree(virtual);
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}
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DMXConfigEntryPtr
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dmxConfigCreateEntry(DMXConfigType type,
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DMXConfigCommentPtr comment, DMXConfigVirtualPtr virtual)
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{
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DMXConfigEntryPtr pEntry = dmxConfigAlloc(sizeof(*pEntry));
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pEntry->type = type;
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switch (type) {
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case dmxConfigComment:
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pEntry->comment = comment;
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break;
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case dmxConfigVirtual:
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pEntry->virtual = virtual;
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break;
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default:
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dmxConfigLog("Type %d not supported in entry\n", type);
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break;
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}
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return pEntry;
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}
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void
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dmxConfigFreeEntry(DMXConfigEntryPtr entry)
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{
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DMXConfigEntryPtr pt;
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for (pt = entry; pt; pt = pt->next) {
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switch (pt->type) {
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case dmxConfigComment:
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dmxConfigFreeComment(pt->comment);
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break;
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case dmxConfigVirtual:
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dmxConfigFreeVirtual(pt->virtual);
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break;
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default:
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dmxConfigLog("Type %d not supported in entry\n", pt->type);
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break;
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}
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}
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dmxConfigFree(entry);
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}
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DMXConfigEntryPtr
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dmxConfigAddEntry(DMXConfigEntryPtr head,
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DMXConfigType type,
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DMXConfigCommentPtr comment, DMXConfigVirtualPtr virtual)
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{
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DMXConfigEntryPtr child = dmxConfigCreateEntry(type, comment, virtual);
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DMXConfigEntryPtr pt;
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if (!head)
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return child;
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for (pt = head; pt->next; pt = pt->next);
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pt->next = child;
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return head;
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}
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DMXConfigEntryPtr
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dmxConfigEntryComment(DMXConfigCommentPtr comment)
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{
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return dmxConfigCreateEntry(dmxConfigComment, comment, NULL);
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}
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DMXConfigEntryPtr
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dmxConfigEntryVirtual(DMXConfigVirtualPtr virtual)
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{
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return dmxConfigCreateEntry(dmxConfigVirtual, NULL, virtual);
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}
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