xz/doxygen/update-doxygen

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#!/bin/sh
# SPDX-License-Identifier: 0BSD
#############################################################################
#
# While it's possible to use the Doxyfile as is to generate liblzma API
# documentation, it is recommended to use this script because this adds
# the XZ Utils version number to the generated HTML.
#
# Other features:
# - Generate documentation of the XZ Utils internals.
# - Set input and output paths for out-of-tree builds.
#
#############################################################################
#
# Authors: Jia Tan
# Lasse Collin
#
#############################################################################
set -e
show_usage()
{
echo "Usage: $0 <api|internal> [ABS_TOP_SRCDIR ABS_OUTDIR]"
echo
echo "Supported modes:"
echo " - 'api' (default): liblzma API docs into doc/api"
echo " - 'internal': internal docs into doc/internal"
echo
echo "Absolute source and output dirs may be set" \
"to do an out-of-tree build."
echo "The output directory must already exist."
exit 1
}
case $1 in
api|internal)
;;
*)
show_usage
;;
esac
if type doxygen > /dev/null 2>&1; then
:
else
echo "$0: 'doxygen' command not found" >&2
exit 1
fi
case $# in
1)
# One argument: Building inside the source tree
ABS_TOP_SRCDIR=`dirname "$0"`/..
ABS_OUTDIR=$ABS_TOP_SRCDIR/doc
;;
3)
# Three arguments: Possibly an out of tree build
ABS_TOP_SRCDIR=$2
ABS_OUTDIR=$3
;;
*)
show_usage
;;
esac
if test ! -f "$ABS_TOP_SRCDIR/doxygen/Doxyfile"; then
echo "$0: Source dir '$ABS_TOP_SRCDIR/doxygen/Doxyfile' not found" >&2
exit 1
fi
if test ! -d "$ABS_OUTDIR"; then
echo "$0: Output dir '$ABS_OUTDIR' not found" >&2
exit 1
fi
# Get the package version so that it can be included in the generated docs.
PACKAGE_VERSION=`cd "$ABS_TOP_SRCDIR" && sh build-aux/version.sh`
case $1 in
api)
# Remove old documentation before re-generating the new.
rm -rf "$ABS_OUTDIR/api"
# Generate the HTML documentation by preparing the Doxyfile
# in stdin and piping the result to the doxygen command.
# With Doxygen, the last assignment of a value to a tag will
# override any earlier assignment. So, we can use this
# feature to override the tags that need to change between
# "api" and "internal" modes.
ABS_SRCDIR=$ABS_TOP_SRCDIR/src/liblzma/api
(
cat "$ABS_TOP_SRCDIR/doxygen/Doxyfile"
echo "PROJECT_NUMBER = $PACKAGE_VERSION"
echo "OUTPUT_DIRECTORY = $ABS_OUTDIR"
echo "STRIP_FROM_PATH = $ABS_SRCDIR"
echo "INPUT = $ABS_SRCDIR"
) | doxygen -q -
;;
internal)
rm -rf "$ABS_OUTDIR/internal"
(
cat "$ABS_TOP_SRCDIR/doxygen/Doxyfile"
echo 'PROJECT_NAME = "XZ Utils"'
echo "PROJECT_NUMBER = $PACKAGE_VERSION"
echo "OUTPUT_DIRECTORY = $ABS_OUTDIR"
echo "STRIP_FROM_PATH = $ABS_TOP_SRCDIR"
echo "INPUT = $ABS_TOP_SRCDIR/src"
echo 'HTML_OUTPUT = internal'
echo 'SEARCHENGINE = YES'
) | doxygen -q -
;;
esac