summaryrefslogtreecommitdiff
blob: cc3b5b0a1ac4aaea68d43b77f8cd9b9496a09575 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
# Copyright 1999-2021 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2

# @ECLASS: docs.eclass
# @MAINTAINER:
# Andrew Ammerlaan <andrewammerlaan@riseup.net>
# @AUTHOR:
# Author: Andrew Ammerlaan <andrewammerlaan@riseup.net>
# Based on the work of: Michał Górny <mgorny@gentoo.org>
# @SUPPORTED_EAPIS: 6 7
# @BLURB: A simple eclass to build documentation.
# @DESCRIPTION:
# A simple eclass providing basic functions and variables to build
# documentation.
#
# Please note that this eclass appends to RDEPEND and DEPEND
# unconditionally for you.
#
# This eclass also appends "doc" to IUSE, and sets HTML_DOCS
# to the location of the compiled documentation automatically,
# 'einstalldocs' will then automatically install the documentation
# to the correct directory.
#
# The aim of this eclass is to make it easy to add additional
# doc builders. To do this, add a <DOCS_BUILDER>_deps and
# <DOCS_BUILDER>_compile function for your doc builder.
# For python based doc builders you can use the
# python_append_deps function to append [${PYTHON_USEDEP}]
# automatically to additional dependencies.
#
# Example use doxygen:
# @CODE
# DOCS_BUILDER="doxygen"
# DOCS_DEPEND="media-gfx/imagemagick"
# DOCS_DIR="docs"
#
# inherit docs
#
# ...
#
# src_compile() {
# 	default
# 	docs_compile
# }
# @CODE
#
# Example use mkdocs with distutils-r1:
# @CODE
# DOCS_BUILDER="mkdocs"
# DOCS_DEPEND="dev-python/mkdocs-material"
# DOCS_DIR="doc"
#
# PYTHON_COMPAT=( python3_{7,8,9} )
#
# inherit distutils-r1 docs
#
# ...
# @CODE

case "${EAPI:-0}" in
	0|1|2|3|4|5)
		die "Unsupported EAPI=${EAPI:-0} (too old) for ${ECLASS}"
		;;
	6|7)
		;;
	*)
		die "Unsupported EAPI=${EAPI} (unknown) for ${ECLASS}"
		;;
esac

# @ECLASS-VARIABLE: DOCS_BUILDER
# @REQUIRED
# @PRE_INHERIT
# @DESCRIPTION:
# Sets the doc builder to use, currently supports
# sphinx, mkdocs and doxygen.
# PYTHON_COMPAT should be set for python based
# doc builders: sphinx and mkdocs

# @ECLASS-VARIABLE: DOCS_DIR
# @DESCRIPTION:
# Path containing the doc builder config file(s).
#
# For sphinx this is the location of "conf.py"
#
# For mkdocs this is the location of "mkdocs.yml"
# Note that mkdocs.yml often does not reside
# in the same directory as the actual doc files
#
# For doxygen the default name is Doxyfile, but
# package may use a non-standard name. If this
# is the case one should set DOCS_CONFIG_NAME to
# the correct name
#
# Defaults to ${S}

# @ECLASS-VARIABLE: DOCS_DEPEND
# @DEFAULT_UNSET
# @PRE_INHERIT
# @DESCRIPTION:
# Sets additional dependencies required to build the
# documentation.
# For sphinx and mkdocs these dependencies should
# be specified *without* [${PYTHON_USEDEP}], this
# is added by the eclass. E.g. to depend on mkdocs-material:
#
# @CODE
# DOCS_DEPEND="dev-python/mkdocs-material"
# @CODE
#
# This eclass appends to this variable, this makes it
# possible to call it later in your ebuild again if
# necessary.

# @ECLASS-VARIABLE: DOCS_AUTODOC
# @PRE_INHERIT
# @DESCRIPTION:
# Sets whether to use sphinx.ext.autodoc/mkautodoc
# Defaults to 1 (True) for sphinx, and 0 (False) for mkdocs.
# Not relevant for doxygen.

# @ECLASS-VARIABLE: DOCS_OUTDIR
# @DESCRIPTION:
# Sets the directory where the documentation should
# be built into. There is no real reason to change this.
# However, this variable is useful if the package should
# also install other HTML files.
#
# Example use:
# @CODE
# HTML_DOCS=( "${yourdocs}" "${DOCS_OUTDIR}/." )
# @CODE
#
# Defaults to ${S}/_build/html

# @ECLASS-VARIABLE: DOCS_CONFIG_NAME
# @DESCRIPTION:
# Name of the doc builder config file.
#
# Only relevant for doxygen, as it allows
# config files with non-standard names.
# Does not do anything for mkdocs or sphinx.
#
# Defaults to Doxyfile for doxygen

if [[ ! ${_DOCS} ]]; then

# For the python based DOCS_BUILDERS we need to inherit any python eclass
case ${DOCS_BUILDER} in
	"sphinx"|"mkdocs")
		# We need the python_gen_any_dep function
		if [[ ! ${_PYTHON_R1} && ! ${_PYTHON_ANY_R1} && ! ${_PYTHON_SINGLE_R1} ]]; then
			die "distutils-r1, python-r1, python-single-r1 or python-any-r1 needs to be inherited to use python based documentation builders"
		fi
		;;
	"doxygen")
		# do not need to inherit anything for doxygen
		;;
	"")
		die "DOCS_BUILDER unset, should be set to use ${ECLASS}"
		;;
	*)
		die "Unsupported DOCS_BUILDER=${DOCS_BUILDER} (unknown) for ${ECLASS}"
		;;
esac

# @FUNCTION: python_append_deps
# @INTERNAL
# @DESCRIPTION:
# Appends [\${PYTHON_USEDEP}] to all dependencies
# for python based DOCS_BUILDERs such as mkdocs or
# sphinx.
python_append_deps() {
	debug-print-function ${FUNCNAME}

	local temp
	local dep
	for dep in ${DOCS_DEPEND[@]}; do
		temp+=" ${dep}[\${PYTHON_USEDEP}]"
	done
	DOCS_DEPEND=${temp}
}

# @FUNCTION: sphinx_deps
# @INTERNAL
# @DESCRIPTION:
# Sets dependencies for sphinx
sphinx_deps() {
	debug-print-function ${FUNCNAME}

	: ${DOCS_AUTODOC:=1}

	deps="dev-python/sphinx[\${PYTHON_USEDEP}]
			${DOCS_DEPEND}"
	if [[ ${DOCS_AUTODOC} == 0 ]]; then
		if [[ -n "${DOCS_DEPEND}" ]]; then
			die "${FUNCNAME}: do not set DOCS_AUTODOC to 0 if external plugins are used"
		fi
	elif [[ ${DOCS_AUTODOC} != 0 && ${DOCS_AUTODOC} != 1 ]]; then
		die "${FUNCNAME}: DOCS_AUTODOC should be set to 0 or 1"
	fi
	if [[ ${_PYTHON_SINGLE_R1} ]]; then
		DOCS_DEPEND="$(python_gen_cond_dep "${deps}")"
	else
		DOCS_DEPEND="$(python_gen_any_dep "${deps}")"
	fi
}

# @FUNCTION: sphinx_compile
# @INTERNAL
# @DESCRIPTION:
# Calls sphinx to build docs.
#
# If you overwrite python_compile_all do not call
# this function, call docs_compile instead
sphinx_compile() {
	debug-print-function ${FUNCNAME}
	use doc || return

	local confpy=${DOCS_DIR}/conf.py
	[[ -f ${confpy} ]] ||
		die "${FUNCNAME}: ${confpy} not found, DOCS_DIR=${DOCS_DIR} call wrong"

	if [[ ${DOCS_AUTODOC} == 0 ]]; then
		if grep -F -q 'sphinx.ext.autodoc' "${confpy}"; then
			die "${FUNCNAME}: autodoc disabled but sphinx.ext.autodoc found in ${confpy}"
		fi
	elif [[ ${DOCS_AUTODOC} == 1 ]]; then
		if ! grep -F -q 'sphinx.ext.autodoc' "${confpy}"; then
			die "${FUNCNAME}: sphinx.ext.autodoc not found in ${confpy}, set DOCS_AUTODOC=0"
		fi
	fi

	sed -i -e 's:^intersphinx_mapping:disabled_&:' \
		"${DOCS_DIR}"/conf.py || die
	# not all packages include the Makefile in pypi tarball
	sphinx-build -b html -d "${DOCS_OUTDIR}"/_build/doctrees "${DOCS_DIR}" \
	"${DOCS_OUTDIR}" || die "${FUNCNAME}: sphinx-build failed"
}

# @FUNCTION: mkdocs_deps
# @INTERNAL
# @DESCRIPTION:
# Sets dependencies for mkdocs
mkdocs_deps() {
	debug-print-function ${FUNCNAME}

	: ${DOCS_AUTODOC:=0}

	deps="dev-python/mkdocs[\${PYTHON_USEDEP}]
			${DOCS_DEPEND}"
	if [[ ${DOCS_AUTODOC} == 1 ]]; then
		deps="dev-python/mkautodoc[\${PYTHON_USEDEP}]
				${deps}"
	elif [[ ${DOCS_AUTODOC} != 0 && ${DOCS_AUTODOC} != 1 ]]; then
		die "${FUNCNAME}: DOCS_AUTODOC should be set to 0 or 1"
	fi
	if [[ ${_PYTHON_SINGLE_R1} ]]; then
		DOCS_DEPEND="$(python_gen_cond_dep "${deps}")"
	else
		DOCS_DEPEND="$(python_gen_any_dep "${deps}")"
	fi
}

# @FUNCTION: mkdocs_compile
# @INTERNAL
# @DESCRIPTION:
# Calls mkdocs to build docs.
#
# If you overwrite python_compile_all do not call
# this function, call docs_compile instead
mkdocs_compile() {
	debug-print-function ${FUNCNAME}
	use doc || return

	local mkdocsyml=${DOCS_DIR}/mkdocs.yml
	[[ -f ${mkdocsyml} ]] ||
		die "${FUNCNAME}: ${mkdocsyml} not found, DOCS_DIR=${DOCS_DIR} wrong"

	pushd "${DOCS_DIR}" || die
	mkdocs build -d "${DOCS_OUTDIR}" || die "${FUNCNAME}: mkdocs build failed"
	popd || die

	# remove generated .gz variants
	# mkdocs currently has no option to disable this
	# and portage complains: "Colliding files found by ecompress"
	rm "${DOCS_OUTDIR}"/*.gz || die
}

# @FUNCTION: doxygen_deps
# @INTERNAL
# @DESCRIPTION:
# Sets dependencies for doxygen
doxygen_deps() {
	debug-print-function ${FUNCNAME}

	DOCS_DEPEND="app-doc/doxygen
		${DOCS_DEPEND}"
}

# @FUNCTION: doxygen_compile
# @INTERNAL
# @DESCRIPTION:
# Calls doxygen to build docs.
doxygen_compile() {
	debug-print-function ${FUNCNAME}
	use doc || return

	: ${DOCS_CONFIG_NAME:="Doxyfile"}

	local doxyfile=${DOCS_DIR}/${DOCS_CONFIG_NAME}
	[[ -f ${doxyfile} ]] ||
		die "${FUNCNAME}: ${doxyfile} not found, DOCS_DIR=${DOCS_DIR} or DOCS_CONFIG_NAME=${DOCS_CONFIG_NAME} wrong"

	# doxygen wants the HTML_OUTPUT dir to already exist
	mkdir -p "${DOCS_OUTDIR}" || die

	pushd "${DOCS_DIR}" || die
	(cat "${DOCS_CONFIG_NAME}" ; echo "HTML_OUTPUT=${DOCS_OUTDIR}") | doxygen - || die "${FUNCNAME}: doxygen failed"
	popd || die
}

# @FUNCTION: docs_compile
# @DESCRIPTION:
# Calls DOCS_BUILDER and sets HTML_DOCS
#
# This function must be called in src_compile. Take care not to
# overwrite the variables set by it. If distutils-r1 is inherited
# *before* this eclass, than docs_compile will be automatically
# added to python_compile_all() and there is no need to call
# it manually. Note that this function checks if USE="doc" is
# enabled, and if not automatically exits. Therefore, there is
# no need to wrap this function in a if statement.
#
# Example use:
# @CODE
# src_compile() {
# 	default
# 	docs_compile
# }
# @CODE
docs_compile() {
	debug-print-function ${FUNCNAME}
	use doc || return

	# Set a sensible default as DOCS_DIR
	: ${DOCS_DIR:="${S}"}

	# Where to put the compiled files?
	: ${DOCS_OUTDIR:="${S}/_build/html"}

	${DOCS_BUILDER}_compile

	HTML_DOCS+=( "${DOCS_OUTDIR}/." )

	# we need to ensure successful return in case we're called last,
	# otherwise Portage may wrongly assume sourcing failed
	return 0
}


# This is where we setup the USE/(B)DEPEND variables
# and call the doc builder specific setup functions
IUSE+=" doc"

# Call the correct setup function
case ${DOCS_BUILDER} in
	"sphinx")
		python_append_deps
		sphinx_deps
		;;
	"mkdocs")
		python_append_deps
		mkdocs_deps
		;;
	"doxygen")
		doxygen_deps
		;;
esac

if [[ ${EAPI} == [7] ]]; then
	BDEPEND+=" doc? ( ${DOCS_DEPEND} )"
else
	DEPEND+=" doc? ( ${DOCS_DEPEND} )"
fi

# If this is a python package using distutils-r1
# then put the compile function in the specific
# python function, else docs_compile should be manually
# added to src_compile
if [[ ${_DISTUTILS_R1} && ( ${DOCS_BUILDER}="mkdocs" || ${DOCS_BUILDER}="sphinx" ) ]]; then
	python_compile_all() { docs_compile; }
fi

_DOCS=1
fi