1 |
The EGO_SUM variable replaces EGO_VENDOR for go modules. |
2 |
|
3 |
Signed-off-by: William Hubbs <williamh@g.o> |
4 |
--- |
5 |
eclass/go-module.eclass | 362 +++++++++++++++++++++++++++++++++++----- |
6 |
1 file changed, 322 insertions(+), 40 deletions(-) |
7 |
|
8 |
diff --git a/eclass/go-module.eclass b/eclass/go-module.eclass |
9 |
index 80ff2902b3a..68b95bbc510 100644 |
10 |
--- a/eclass/go-module.eclass |
11 |
+++ b/eclass/go-module.eclass |
12 |
@@ -4,28 +4,29 @@ |
13 |
# @ECLASS: go-module.eclass |
14 |
# @MAINTAINER: |
15 |
# William Hubbs <williamh@g.o> |
16 |
+# @AUTHOR: |
17 |
+# William Hubbs <williamh@g.o> |
18 |
+# Robin H. Johnson <robbat2@g.o> |
19 |
# @SUPPORTED_EAPIS: 7 |
20 |
# @BLURB: basic eclass for building software written as go modules |
21 |
# @DESCRIPTION: |
22 |
-# This eclass provides basic settings and functions |
23 |
-# needed by all software written in the go programming language that uses |
24 |
-# go modules. |
25 |
-# |
26 |
-# You will know the software you are packaging uses modules because |
27 |
-# it will have files named go.sum and go.mod in its top-level source |
28 |
-# directory. If it does not have these files, use the golang-* eclasses. |
29 |
+# This eclass provides basic settings and functions needed by all software |
30 |
+# written in the go programming language that uses modules. |
31 |
# |
32 |
-# If it has these files and a directory named vendor in its top-level |
33 |
-# source directory, you only need to inherit the eclass since upstream |
34 |
-# is vendoring the dependencies. |
35 |
+# If the software you are packaging has a file named go.mod in its top |
36 |
+# level directory, it uses modules and your ebuild should inherit this |
37 |
+# eclass. If it does not, your ebuild should use the golang-* eclasses. |
38 |
# |
39 |
-# If it does not have a vendor directory, you should use the EGO_VENDOR |
40 |
-# variable and the go-module_vendor_uris function as shown in the |
41 |
-# example below to handle dependencies. |
42 |
+# If, besides go.mod, your software has a directory named vendor in its |
43 |
+# top level directory, the only thing you need to do is inherit the |
44 |
+# eclass. If there is no vendor directory, you need to also populate |
45 |
+# EGO_SUM and call go-module_set_globals as discussed below. |
46 |
# |
47 |
# Since Go programs are statically linked, it is important that your ebuild's |
48 |
# LICENSE= setting includes the licenses of all statically linked |
49 |
# dependencies. So please make sure it is accurate. |
50 |
+# You can use a utility like dev-util/golicense (network connectivity is |
51 |
+# required) to extract this information from the compiled binary. |
52 |
# |
53 |
# @EXAMPLE: |
54 |
# |
55 |
@@ -33,19 +34,21 @@ |
56 |
# |
57 |
# inherit go-module |
58 |
# |
59 |
-# EGO_VENDOR=( |
60 |
-# "github.com/xenolf/lego 6cac0ea7d8b28c889f709ec7fa92e92b82f490dd" |
61 |
-# "golang.org/x/crypto 453249f01cfeb54c3d549ddb75ff152ca243f9d8 github.com/golang/crypto" |
62 |
+# EGO_SUM=( |
63 |
+# "github.com/aybabtme/rgbterm v0.0.0-20170906152045-cc83f3b3ce59/go.mod h1:q/89r3U2H7sSsE2t6Kca0lfwTK8JdoNGS/yzM/4iH5I=" |
64 |
+# "github.com/aybabtme/rgbterm v0.0.0-20170906152045-cc83f3b3ce59 h1:WWB576BN5zNSZc/M9d/10pqEx5VHNhaQ/yOVAkmj5Yo=" |
65 |
# ) |
66 |
# |
67 |
+# go-module_set_globals |
68 |
+# |
69 |
# SRC_URI="https://github.com/example/${PN}/archive/v${PV}.tar.gz -> ${P}.tar.gz |
70 |
-# $(go-module_vendor_uris)" |
71 |
+# ${EGO_SUM_SRC_URI}" |
72 |
# |
73 |
# @CODE |
74 |
|
75 |
case ${EAPI:-0} in |
76 |
7) ;; |
77 |
- *) die "${ECLASS} API in EAPI ${EAPI} not yet established." |
78 |
+ *) die "${ECLASS} EAPI ${EAPI} is not supported." |
79 |
esac |
80 |
|
81 |
if [[ -z ${_GO_MODULE} ]]; then |
82 |
@@ -64,10 +67,12 @@ export GO111MODULE=on |
83 |
export GOCACHE="${T}/go-build" |
84 |
|
85 |
# The following go flags should be used for all builds. |
86 |
-# -mod=vendor stopps downloading of dependencies from the internet. |
87 |
# -v prints the names of packages as they are compiled |
88 |
# -x prints commands as they are executed |
89 |
-export GOFLAGS="-mod=vendor -v -x" |
90 |
+# -mod=readonly do not update go.mod/go.sum but fail if updates are needed |
91 |
+# -mod=vendor use the vendor directory instead of downloading dependencies |
92 |
+export GOFLAGS="-v -x -mod=readonly" |
93 |
+[[ ${#EGO_VENDOR[@]} -gt 0 ]] && GOFLAGS+=" -mod=vendor" |
94 |
|
95 |
# Do not complain about CFLAGS etc since go projects do not use them. |
96 |
QA_FLAGS_IGNORED='.*' |
97 |
@@ -77,28 +82,36 @@ RESTRICT="strip" |
98 |
|
99 |
EXPORT_FUNCTIONS src_unpack pkg_postinst |
100 |
|
101 |
+# @ECLASS-VARIABLE: EGO_SUM |
102 |
+# @DESCRIPTION: |
103 |
+# This is an array based on the go.sum content from inside the target package. |
104 |
+# Each array entry must be quoted and contain a single line from go.sum. |
105 |
+# |
106 |
+# The format of go.sum is described upstream here: |
107 |
+# https://tip.golang.org/cmd/go/#hdr-Module_authentication_using_go_sum |
108 |
+# |
109 |
+# h1:<hash> is the Hash1 structure used by upstream Go |
110 |
+# Note that Hash1 is MORE stable than Gentoo distfile hashing, and upstream |
111 |
+# warns that it's conceptually possible for the Hash1 value to remain stable |
112 |
+# while the upstream zipfiles change. E.g. it does NOT capture mtime changes in |
113 |
+# files within a zipfile. |
114 |
+ |
115 |
# @ECLASS-VARIABLE: EGO_VENDOR |
116 |
# @DESCRIPTION: |
117 |
-# This variable contains a list of vendored packages. |
118 |
-# The items of this array are strings that contain the |
119 |
-# import path and the git commit hash for a vendored package. |
120 |
-# If the import path does not start with github.com, the third argument |
121 |
-# can be used to point to a github repository. |
122 |
+# This variable is deprecated and should no longer be used. Please |
123 |
+# convert your ebuilds to use EGO_SUM. |
124 |
|
125 |
# @FUNCTION: go-module_vendor_uris |
126 |
# @DESCRIPTION: |
127 |
-# Convert the information in EGO_VENDOR to a format suitable for |
128 |
-# SRC_URI. |
129 |
-# A call to this function should be added to SRC_URI in your ebuild if |
130 |
-# the upstream package does not include vendored dependencies. |
131 |
+# This function is deprecated. |
132 |
go-module_vendor_uris() { |
133 |
local hash import line repo x |
134 |
for line in "${EGO_VENDOR[@]}"; do |
135 |
read -r import hash repo x <<< "${line}" |
136 |
- if [[ -n $x ]]; then |
137 |
+ if [[ -n ${x} ]]; then |
138 |
eerror "Trailing information in EGO_VENDOR in ${P}.ebuild" |
139 |
eerror "${line}" |
140 |
- eerror "Trailing information is: \"$x\"" |
141 |
+ eerror "Trailing information is: \"${x}\"" |
142 |
die "Invalid EGO_VENDOR format" |
143 |
fi |
144 |
: "${repo:=${import}}" |
145 |
@@ -106,18 +119,224 @@ go-module_vendor_uris() { |
146 |
done |
147 |
} |
148 |
|
149 |
+# @ECLASS-VARIABLE: _GOMODULE_GOPROXY_BASEURI |
150 |
+# @DESCRIPTION: |
151 |
+# Golang module proxy service to fetch module files from. Note that the module |
152 |
+# proxy generally verifies modules via the Hash1 code. |
153 |
+# |
154 |
+# Users in China may find some mirrors in the default list blocked, and should |
155 |
+# explicitly set an entry in /etc/portage/mirrors for goproxy to |
156 |
+# https://goproxy.cn/ or another mirror that is not blocked in China. |
157 |
+# See https://arslan.io/2019/08/02/why-you-should-use-a-go-module-proxy/ for |
158 |
+# further details |
159 |
+# |
160 |
+# This variable is NOT intended for user-level configuration of mirrors, but |
161 |
+# rather to cover go modules that might exist only on specific Goproxy |
162 |
+# servers for non-technical reasons. |
163 |
+# |
164 |
+# This variable should NOT be present in user-level configuration e.g. |
165 |
+# /etc/portage/make.conf, as it will violate metadata immutability! |
166 |
+# |
167 |
+# I am considering removing this and just hard coding mirror://goproxy |
168 |
+# below, so please do not rely on it. |
169 |
+: "${_GOMODULE_GOPROXY_BASEURI:=mirror://goproxy/}" |
170 |
+ |
171 |
+# @ECLASS-VARIABLE: _GOMODULE_GOSUM_REVERSE_MAP |
172 |
+# @DESCRIPTION: |
173 |
+# Mapping back from Gentoo distfile name to upstream distfile path. |
174 |
+# Associative array to avoid O(N*M) performance when populating the GOPROXY |
175 |
+# directory structure. |
176 |
+declare -A -g _GOMODULE_GOSUM_REVERSE_MAP |
177 |
+ |
178 |
+# @FUNCTION: go-module_set_globals |
179 |
+# @DESCRIPTION: |
180 |
+# Convert the information in EGO_SUM for other usage in the ebuild. |
181 |
+# - Populates EGO_SUM_SRC_URI that can be added to SRC_URI |
182 |
+# - Exports _GOMODULE_GOSUM_REVERSE_MAP which provides reverse mapping from |
183 |
+# distfile back to the relative part of SRC_URI, as needed for |
184 |
+# GOPROXY=file:///... |
185 |
+go-module_set_globals() { |
186 |
+ local line exts |
187 |
+ # for tracking go.sum errors |
188 |
+ local error_in_gosum=0 |
189 |
+ local -a gosum_errorlines |
190 |
+ # used make SRC_URI easier to read |
191 |
+ local newline=$'\n' |
192 |
+ |
193 |
+ # Now parse EGO_SUM |
194 |
+ for line in "${EGO_SUM[@]}"; do |
195 |
+ local module version modfile version_modfile kvs x |
196 |
+ read -r module version_modfile kvs <<< "${line}" |
197 |
+ |
198 |
+ # Split 'v0.3.0/go.mod' into 'v0.3.0' and '/go.mod' |
199 |
+ # It might NOT have the trailing /go.mod |
200 |
+ IFS=/ read -r version modfile x <<<"${version_modfile}" |
201 |
+ # Reject multiple slashes |
202 |
+ if [[ -n ${x} ]]; then |
203 |
+ error_in_gosum=1 |
204 |
+ gosum_errorlines+=( "Bad version: ${version_modfile}" ) |
205 |
+ continue |
206 |
+ fi |
207 |
+ |
208 |
+ # The modfile variable should be either empty or '/go.mod' |
209 |
+ # There is a chance that upstream Go might add something else here in |
210 |
+ # future, and we should be prepared to capture it. |
211 |
+ # The .info files do not need to be downloaded, they will be created |
212 |
+ # based on the .mod file. |
213 |
+ # See https://github.com/golang/go/issues/35922#issuecomment-584824275 |
214 |
+ exts=() |
215 |
+ local errormsg='' |
216 |
+ case "${modfile}" in |
217 |
+ '') exts=( zip ) ;; |
218 |
+ 'go.mod'|'/go.mod') exts=( mod ) ;; |
219 |
+ *) errormsg="Unknown modfile: line='${line}', modfile='${modfile}'" ;; |
220 |
+ esac |
221 |
+ |
222 |
+ # If it was a bad entry, restart the loop |
223 |
+ if [[ -n ${errormsg} ]]; then |
224 |
+ error_in_gosum=1 |
225 |
+ gosum_errorlines+=( "${errormsg} line='${line}', modfile='${modfile}'" ) |
226 |
+ continue |
227 |
+ fi |
228 |
+ |
229 |
+ _dir=$(_go-module_gomod_encode "${module}") |
230 |
+ |
231 |
+ for _ext in "${exts[@]}" ; do |
232 |
+ # Relative URI within a GOPROXY for a file |
233 |
+ _reluri="${_dir}/@v/${version}.${_ext}" |
234 |
+ # SRC_URI: LHS entry |
235 |
+ _uri="${_GOMODULE_GOPROXY_BASEURI}/${_reluri}" |
236 |
+# _uri="mirror://goproxy/${_reluri}" |
237 |
+ # SRC_URI: RHS entry, encode any slash in the path as |
238 |
+ # %2F in the filename |
239 |
+ _distfile="${_reluri//\//%2F}" |
240 |
+ |
241 |
+ EGO_SUM_SRC_URI+=" ${_uri} -> ${_distfile}${newline}" |
242 |
+ _GOMODULE_GOSUM_REVERSE_MAP["${_distfile}"]="${_reluri}" |
243 |
+ done |
244 |
+ done |
245 |
+ |
246 |
+ if [[ ${error_in_gosum} != 0 ]]; then |
247 |
+ eerror "Trailing information in EGO_SUM in ${P}.ebuild" |
248 |
+ for line in "${gosum_errorlines[@]}" ; do |
249 |
+ eerror "${line}" |
250 |
+ done |
251 |
+ die "Invalid EGO_SUM format" |
252 |
+ fi |
253 |
+ |
254 |
+ # Ensure these variables are not changed past this point |
255 |
+ readonly EGO_SUM |
256 |
+ readonly EGO_SUM_SRC_URI |
257 |
+ readonly _GOMODULE_GOSUM_REVERSE_MAP |
258 |
+ |
259 |
+ # Set the guard that we are safe |
260 |
+ _GO_MODULE_SET_GLOBALS_CALLED=1 |
261 |
+} |
262 |
+ |
263 |
# @FUNCTION: go-module_src_unpack |
264 |
# @DESCRIPTION: |
265 |
+# - If EGO_VENDOR is set, use the deprecated function to unpack the base |
266 |
+# tarballs and the tarballs indicated in EGO_VENDOR to the correct |
267 |
+# locations. |
268 |
+# - Otherwise, if EGO_SUM is set, unpack the base tarball(s) and set up the |
269 |
+# local go proxy. |
270 |
+# - Otherwise do a normal unpack. |
271 |
+go-module_src_unpack() { |
272 |
+ if [[ "${#EGO_VENDOR[@]}" -gt 0 ]]; then |
273 |
+ _go-module_src_unpack_vendor |
274 |
+ elif [[ "${#EGO_SUM[@]}" -gt 0 ]]; then |
275 |
+ _go-module_src_unpack_gosum |
276 |
+ else |
277 |
+ default |
278 |
+ fi |
279 |
+} |
280 |
+ |
281 |
+# @FUNCTION: _go-module_src_unpack_gosum |
282 |
+# @DESCRIPTION: |
283 |
+# Populate a GOPROXY directory hierarchy with distfiles from EGO_SUM and |
284 |
+# unpack the base distfiles. |
285 |
+# |
286 |
+# Exports GOPROXY environment variable so that Go calls will source the |
287 |
+# directory correctly. |
288 |
+_go-module_src_unpack_gosum() { |
289 |
+ # shellcheck disable=SC2120 |
290 |
+ debug-print-function "${FUNCNAME}" "$@" |
291 |
+ |
292 |
+ if [[ ! ${_GO_MODULE_SET_GLOBALS_CALLED} ]]; then |
293 |
+ die "go-module_set_globals must be called in global scope" |
294 |
+ fi |
295 |
+ |
296 |
+ local goproxy_dir="${T}/go-proxy" |
297 |
+ mkdir -p "${goproxy_dir}" || die |
298 |
+ |
299 |
+ # For each Golang module distfile, look up where it's supposed to go, and |
300 |
+ # symlink into place. |
301 |
+ local f |
302 |
+ local goproxy_mod_dir |
303 |
+ for f in ${A}; do |
304 |
+ goproxy_mod_path="${_GOMODULE_GOSUM_REVERSE_MAP["${f}"]}" |
305 |
+ if [[ -n "${goproxy_mod_path}" ]]; then |
306 |
+ debug-print-function "Populating go proxy for ${goproxy_mod_path}" |
307 |
+ # Build symlink hierarchy |
308 |
+ goproxy_mod_dir=$( dirname "${goproxy_dir}"/"${goproxy_mod_path}" ) |
309 |
+ mkdir -p "${goproxy_mod_dir}" || die |
310 |
+ ln -sf "${DISTDIR}"/"${f}" "${goproxy_dir}/${goproxy_mod_path}" || |
311 |
+ die "Failed to ln" |
312 |
+ local v=${goproxy_mod_path} |
313 |
+ v="${v%.mod}" |
314 |
+ v="${v%.zip}" |
315 |
+ v="${v//*\/}" |
316 |
+ _go-module_gosum_synthesize_files "${goproxy_mod_dir}" "${v}" |
317 |
+ else |
318 |
+ unpack "$f" |
319 |
+ fi |
320 |
+ done |
321 |
+ export GOPROXY="file://${goproxy_dir}" |
322 |
+ |
323 |
+ # Validate the gosum now |
324 |
+ _go-module_src_unpack_verify_gosum |
325 |
+} |
326 |
+ |
327 |
+# @FUNCTION: _go-module_gosum_synthesize_files |
328 |
+# @DESCRIPTION: |
329 |
+# Given a path & version, populate all Goproxy metadata files which aren't |
330 |
+# needed to be downloaded directly. |
331 |
+# - .../@v/${version}.info |
332 |
+# - .../@v/list |
333 |
+_go-module_gosum_synthesize_files() { |
334 |
+ local target=$1 |
335 |
+ local version=$2 |
336 |
+ # 'go get' doesn't care about the hash of the .info files, they |
337 |
+ # just need a 'version' element! |
338 |
+ # This saves a download of a tiny file |
339 |
+ # The .time key is omitted, because that is the time a module was added |
340 |
+ # to the upstream goproxy, and not metadata about the module itself. |
341 |
+ cat >"${target}/${version}.info" <<-EOF |
342 |
+ { |
343 |
+ "Version": "${version}", |
344 |
+ "shortName": "${version}", |
345 |
+ "Name": "${version}" |
346 |
+ } |
347 |
+ EOF |
348 |
+ listfile="${target}"/list |
349 |
+ if ! grep -sq -x -e "${version}" "${listfile}" 2>/dev/null; then |
350 |
+ echo "${version}" >>"${listfile}" |
351 |
+ fi |
352 |
+} |
353 |
+ |
354 |
+# @FUNCTION: _go-module_src_unpack_vendor |
355 |
+# @DESCRIPTION: |
356 |
# Extract all archives in ${a} which are not nentioned in ${EGO_VENDOR} |
357 |
# to their usual locations then extract all archives mentioned in |
358 |
# ${EGO_VENDOR} to ${S}/vendor. |
359 |
-go-module_src_unpack() { |
360 |
- debug-print-function ${FUNCNAME} "$@" |
361 |
+_go-module_src_unpack_vendor() { |
362 |
+ # shellcheck disable=SC2120 |
363 |
+ debug-print-function "${FUNCNAME}" "$@" |
364 |
local f hash import line repo tarball vendor_tarballs x |
365 |
vendor_tarballs=() |
366 |
for line in "${EGO_VENDOR[@]}"; do |
367 |
read -r import hash repo x <<< "${line}" |
368 |
- if [[ -n $x ]]; then |
369 |
+ if [[ -n ${x} ]]; then |
370 |
eerror "Trailing information in EGO_VENDOR in ${P}.ebuild" |
371 |
eerror "${line}" |
372 |
die "Invalid EGO_VENDOR format" |
373 |
@@ -125,10 +344,10 @@ go-module_src_unpack() { |
374 |
: "${repo:=${import}}" |
375 |
vendor_tarballs+=("${repo//\//-}-${hash}.tar.gz") |
376 |
done |
377 |
- for f in $A; do |
378 |
- [[ -n ${vendor_tarballs[*]} ]] && has "$f" "${vendor_tarballs[@]}" && |
379 |
+ for f in ${A}; do |
380 |
+ [[ -n ${vendor_tarballs[*]} ]] && has "${f}" "${vendor_tarballs[@]}" && |
381 |
continue |
382 |
- unpack "$f" |
383 |
+ unpack "${f}" |
384 |
done |
385 |
|
386 |
[[ -z ${vendor_tarballs[*]} ]] && return |
387 |
@@ -143,6 +362,42 @@ go-module_src_unpack() { |
388 |
-f "${DISTDIR}/${tarball}" || die |
389 |
eend |
390 |
done |
391 |
+ eqawarn "${P}.ebuild uses EGO_VENDOR. Please migrate to EGO_SUM." |
392 |
+} |
393 |
+ |
394 |
+# @FUNCTION: _go-module_src_unpack_verify_gosum |
395 |
+# @DESCRIPTION: |
396 |
+# Validate the Go modules declared by EGO_SUM are sufficient to cover building |
397 |
+# the package, without actually building it yet. |
398 |
+_go-module_src_unpack_verify_gosum() { |
399 |
+ # shellcheck disable=SC2120 |
400 |
+ debug-print-function "${FUNCNAME}" "$@" |
401 |
+ |
402 |
+ if [[ ! ${_GO_MODULE_SET_GLOBALS_CALLED} ]]; then |
403 |
+ die "go-module_set_globals must be called in global scope" |
404 |
+ fi |
405 |
+ |
406 |
+ cd "${S}" |
407 |
+ |
408 |
+ # Cleanup the modules before starting anything else |
409 |
+ # This will print 'downloading' messages, but it's accessing content from |
410 |
+ # the $GOPROXY file:/// URL! |
411 |
+ einfo "Tidying go.mod/go.sum" |
412 |
+ go mod tidy >/dev/null |
413 |
+ |
414 |
+ # Verify that all needed modules are really present, by fetching everything |
415 |
+ # in the package's main go.mod. If the EGO_SUM was missing an entry then |
416 |
+ # 'go mod tidy' && 'go get' will flag it. |
417 |
+ # -v = verbose |
418 |
+ # -d = download only, don't install |
419 |
+ # -mod readonly = treat modules as readonly source |
420 |
+ einfo "Verifying linked Golang modules" |
421 |
+ go get \ |
422 |
+ -v \ |
423 |
+ -d \ |
424 |
+ -mod readonly \ |
425 |
+ all \ |
426 |
+ || die "Some module is missing, update EGO_SUM" |
427 |
} |
428 |
|
429 |
# @FUNCTION: go-module_live_vendor |
430 |
@@ -150,13 +405,14 @@ go-module_src_unpack() { |
431 |
# This function is used in live ebuilds to vendor the dependencies when |
432 |
# upstream doesn't vendor them. |
433 |
go-module_live_vendor() { |
434 |
- debug-print-function ${FUNCNAME} "$@" |
435 |
+ debug-print-function "${FUNCNAME}" "$@" |
436 |
|
437 |
+ # shellcheck disable=SC2086 |
438 |
has live ${PROPERTIES} || |
439 |
die "${FUNCNAME} only allowed in live ebuilds" |
440 |
[[ "${EBUILD_PHASE}" == unpack ]] || |
441 |
die "${FUNCNAME} only allowed in src_unpack" |
442 |
- [[ -d "${S}"/vendor ]] || |
443 |
+ [[ -d "${S}"/vendor ]] && |
444 |
die "${FUNCNAME} only allowed when upstream isn't vendoring" |
445 |
|
446 |
pushd "${S}" >& /dev/null || die |
447 |
@@ -168,7 +424,7 @@ go-module_live_vendor() { |
448 |
# @DESCRIPTION: |
449 |
# Display a warning about security updates for Go programs. |
450 |
go-module_pkg_postinst() { |
451 |
- debug-print-function ${FUNCNAME} "$@" |
452 |
+ debug-print-function "${FUNCNAME}" "$@" |
453 |
[[ -n ${REPLACING_VERSIONS} ]] && return 0 |
454 |
ewarn "${PN} is written in the Go programming language." |
455 |
ewarn "Since this language is statically linked, security" |
456 |
@@ -179,4 +435,30 @@ go-module_pkg_postinst() { |
457 |
ewarn "stable tree." |
458 |
} |
459 |
|
460 |
+# @FUNCTION: _go-module_gomod_encode |
461 |
+# @DESCRIPTION: |
462 |
+# Encode the name(path) of a Golang module in the format expected by Goproxy. |
463 |
+# |
464 |
+# Upper letters are replaced by their lowercase version with a '!' prefix. |
465 |
+# |
466 |
+_go-module_gomod_encode() { |
467 |
+ ## Python: |
468 |
+ # return re.sub('([A-Z]{1})', r'!\1', s).lower() |
469 |
+ |
470 |
+ ## Sed: |
471 |
+ ## This uses GNU Sed extension \l to downcase the match |
472 |
+ #echo "${module}" |sed 's,[A-Z],!\l&,g' |
473 |
+ # |
474 |
+ # Bash variant: |
475 |
+ debug-print-function "${FUNCNAME}" "$@" |
476 |
+ #local re input lower |
477 |
+ re='(.*)([A-Z])(.*)' |
478 |
+ input="${1}" |
479 |
+ while [[ ${input} =~ ${re} ]]; do |
480 |
+ lower='!'"${BASH_REMATCH[2],}" |
481 |
+ input="${BASH_REMATCH[1]}${lower}${BASH_REMATCH[3]}" |
482 |
+ done |
483 |
+ echo "${input}" |
484 |
+} |
485 |
+ |
486 |
fi |
487 |
-- |
488 |
2.24.1 |