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#!/bin/bash
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#
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# help_renameCrossReferences.sh -- This function replaces a node
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# pattern with a node replacement and updates cross-reference
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# definitions to reflect the changes.
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#
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# Copyright (C) 2009-2011 Alain Reguera Delgado
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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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#
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# This program is distributed in the hope that it will be useful,
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# but 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 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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# $Id$
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# ----------------------------------------------------------------------
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function help_renameCrossReferences {
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local NODE=''
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local COUNT=1
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local ENTRIES=''
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local NODE_SRC=''
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local NODE_DST=''
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# Define node pattern for source documenation entry.
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NODE_SRC=$(echo "$ENTRY" \
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| cut -d / -f7- \
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| tr '/' ' ' \
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| sed -r \
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-e "s/(chapter-intro\.texi|\.texi)$//")
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# Define node replacement for target documentation entry.
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NODE_DST=$(echo "$ENTRY_DST" \
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| cut -d / -f7- \
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| tr '/' ' ' \
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| sed -r \
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-e "s/(chapter-intro\.texi|\.texi)$//")
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# Define list of entries to process.
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ENTRIES=$(cli_getFilesList "${MANUAL_BASEDIR}" '.*\.texi')
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# Set action preamble.
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cli_printActionPreamble "$ENTRIES" '' ''
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# Update node-related cross-references. The node-related cross
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# reference definition, long ones specially, could require more
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# than one line to be set. By default, GNU sed does not matches
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# newline characters in the pattern space, so we need to make use
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# of `label' feature and the `N' command in order to build a
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# pattern space that includes the newline character in it. Here we
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# use the `a' letter to name the label we use, followed by N
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# command to add a newline to the pattern space, the s command to
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# make the pattern replacement using the `g' flag to make it
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# global and finaly the command `b' to branch label named `a'.
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sed -r -i ":a;N;s!${NODE_SRC}!${NODE_DST}!g;ba" ${ENTRIES}
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# At this point, source documentation entry has been renamed from
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# source to target documentation entry, but they are still
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# commented. So, uncomment them restoring target documentation
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# entries.
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help_restoreCrossReferences "${ENTRY_DST}"
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}
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