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authorDaniel Baumann <daniel.baumann@progress-linux.org>2019-02-21 19:34:01 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2019-02-21 19:34:01 +0000
commit66564c2324abc58b24327b763e1113ff781156a2 (patch)
tree2480212cd47149a3fda5225b57689d0126546e23 /docs
parentAdding upstream version 1.12.0. (diff)
downloadnetdata-66564c2324abc58b24327b763e1113ff781156a2.tar.xz
netdata-66564c2324abc58b24327b763e1113ff781156a2.zip
Adding upstream version 1.12.1.upstream/1.12.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r--docs/Add-more-charts-to-netdata.md5
-rwxr-xr-xdocs/generator/buildhtml.sh74
-rwxr-xr-xdocs/generator/buildyaml.sh77
-rwxr-xr-xdocs/generator/checklinks.sh72
-rw-r--r--docs/generator/custom/img/geography-16.pngbin0 -> 461 bytes
-rw-r--r--docs/generator/custom/themes/material/partials/footer.html13
-rw-r--r--docs/generator/custom/themes/material/partials/header.html107
7 files changed, 234 insertions, 114 deletions
diff --git a/docs/Add-more-charts-to-netdata.md b/docs/Add-more-charts-to-netdata.md
index 95efd70bd..d8a04c851 100644
--- a/docs/Add-more-charts-to-netdata.md
+++ b/docs/Add-more-charts-to-netdata.md
@@ -22,7 +22,7 @@ To collect non-system metrics, netdata supports a plugin architecture. The follo
- **[Print Servers](#print-servers)**, like CUPS
- **[System](#system)**, for processes and other system metrics
- **[Sensors](#sensors)**, like temperature, fans speed, voltage, humidity, HDD/SSD S.M.A.R.T attributes
-- **[Network](#network)**, such as SNMP devices, `fping`, access points, dns_query_time
+- **[Network](#network)**, such as SNMP devices, `fping`, access points, dns_query_time, nfacct
- **[Time Servers](#time-servers)**, like chrony
- **[Security](#security)**, like FreeRADIUS, OpenVPN, Fail2ban
- **[Telephony Servers](#telephony-servers)**, like openSIPS
@@ -43,7 +43,7 @@ netdata comes with **internal** and **external** plugins:
1. The **internal** ones are written in `C` and run as threads within the netdata daemon.
2. The **external** ones can be written in any computer language. The netdata daemon spawns these as processes (shown with `ps fax`) and reads their metrics using pipes (so the `stdout` of external plugins is connected to netdata for metrics collection and the `stderr` of external plugins is connected to `/var/log/netdata/error.log`).
-To make it easier to develop plugins, and minimize the number of threads and processes running, netdata supports **plugin orchestrators**, each of them supporting one or more data collection **modules**. Currently we ship plugin orchestrators for 4 languages: `C`, `python`, `node.js` and `bash` and 2 more are under development (`go` and `java`).
+To make it easier to develop plugins, and minimize the number of threads and processes running, netdata supports **plugin orchestrators**, each of them supporting one or more data collection **modules**. Currently we ship plugin orchestrators for 4 languages: `C`, `python`, `node.js` and `bash` and 2 more are under development (`go` and `java`).
#### enabling and disabling plugins
@@ -338,6 +338,7 @@ application|language|notes|
ap|BASH<br/>Shell Script|Uses the `iw` command to provide statistics of wireless clients connected to a wireless access point running on this host (works well with `hostapd`).<br/>&nbsp;<br/>netdata plugin: [charts.d.plugin](../collectors/charts.d.plugin#chartsdplugin)<br/>plugin module: [ap.chart.sh](../collectors/charts.d.plugin/ap)<br/>configuration file: [charts.d/ap.conf](../collectors/charts.d.plugin/ap)|
fping|C|Charts network latency statistics for any number of nodes, using the `fping` command. A recent (probably unreleased) version of fping is required. The plugin supplied can install it in `/usr/local`.<br/>&nbsp;<br/>netdata plugin: [fping.plugin](../collectors/fping.plugin) (this is a shell wrapper to start fping - once fping is started, netdata and fping communicate directly - it can also install the right version of fping)<br/>configuration file: [fping.conf](../collectors/fping.plugin)|
snmp|node.js|Connects to multiple snmp servers to collect real-time performance metrics.<br/>&nbsp;<br/>netdata plugin: [node.d.plugin](../collectors/node.d.plugin#nodedplugin)<br/>plugin module: [snmp.node.js](../collectors/node.d.plugin/snmp)<br/>configuration file: [node.d/snmp.conf](../collectors/node.d.plugin/snmp)|
+nfacct|C|collects netfilter firewall, connection tracker and accounting metrics using `libmnl` and `libnetfilter_acct`|
dns_query_time|python<br/>v2 or v3|Provides DNS query time statistics.<br/>&nbsp;<br/>Requires package `dnspython` (`pip install dnspython` or install package `python-dnspython`).<br/>&nbsp;<br/>netdata plugin: [python.d.plugin](../collectors/python.d.plugin)<br/>plugin module: [dns_query_time.chart.py](../collectors/python.d.plugin/dns_query_time)<br/>configuration file: [python.d/dns_query_time.conf](../collectors/python.d.plugin/dns_query_time)|
http|python<br />v2 or v3|Monitors a generic web page for status code and returned content in HTML
port|ptyhon<br />v2 or v3|Checks if a generic TCP port for its availability and response time
diff --git a/docs/generator/buildhtml.sh b/docs/generator/buildhtml.sh
index 3cc87d29f..043112242 100755
--- a/docs/generator/buildhtml.sh
+++ b/docs/generator/buildhtml.sh
@@ -13,21 +13,27 @@ if [ "$currentdir" = "generator" ]; then
cd ../..
fi
GENERATOR_DIR="docs/generator"
+SRC_DIR="${GENERATOR_DIR}/src"
+# Fetch go.d.plugin docs
+GO_D_DIR="collectors/go.d.plugin"
+rm -rf ${GO_D_DIR}
+git clone https://github.com/netdata/go.d.plugin.git ${GO_D_DIR}
# Copy all netdata .md files to docs/generator/src. Exclude htmldoc itself and also the directory node_modules generatord by Netlify
echo "Copying files"
-rm -rf ${GENERATOR_DIR}/src
-find . -type d \( -path ./${GENERATOR_DIR} -o -path ./node_modules \) -prune -o -name "*.md" -print | cpio -pd ${GENERATOR_DIR}/src
+rm -rf ${SRC_DIR}
+find . -type d \( -path ./${GENERATOR_DIR} -o -path ./node_modules \) -prune -o -name "*.md" -print | cpio -pd ${SRC_DIR}
# Copy netdata html resources
-cp -a ./${GENERATOR_DIR}/custom ./${GENERATOR_DIR}/src/
+cp -a ./${GENERATOR_DIR}/custom ./${SRC_DIR}/
+
# Modify the first line of the main README.md, to enable proper static html generation
echo "Modifying README header"
-sed -i -e '0,/# netdata /s//# Introduction\n\n/' ${GENERATOR_DIR}/src/README.md
+sed -i -e '0,/# netdata /s//# Introduction\n\n/' ${SRC_DIR}/README.md
# Remove all GA tracking code
-find ${GENERATOR_DIR}/src -name "*.md" -print0 | xargs -0 sed -i -e 's/\[!\[analytics.*UA-64295674-3)\]()//g'
+find ${SRC_DIR} -name "*.md" -print0 | xargs -0 sed -i -e 's/\[!\[analytics.*UA-64295674-3)\]()//g'
# Remove specific files that don't belong in the documentation
declare -a EXCLUDE_LIST=(
@@ -37,24 +43,62 @@ declare -a EXCLUDE_LIST=(
)
for f in "${EXCLUDE_LIST[@]}"; do
- rm "${GENERATOR_DIR}/src/$f"
+ rm "${SRC_DIR}/$f"
done
-echo "Creating mkdocs.yaml"
+echo "Fetching localization project"
+LOC_DIR=${GENERATOR_DIR}/localization
+rm -rf ${LOC_DIR}
+git clone https://github.com/netdata/localization.git ${LOC_DIR}
+
+echo "Preparing directories"
+MKDOCS_CONFIG_FILE="${GENERATOR_DIR}/mkdocs.yml"
+MKDOCS_DIR="doc"
+DOCS_DIR=${GENERATOR_DIR}/${MKDOCS_DIR}
+rm -rf ${DOCS_DIR}
+mkdir ${DOCS_DIR}
+
+prep_html() {
+ lang="${1}"
+ echo "Creating ${lang} mkdocs.yaml"
+
+ if [ "${lang}" = "en" ] ; then
+ SITE_DIR="build"
+ else
+ SITE_DIR="build/${lang}"
+ fi
-# Generate mkdocs.yaml
-${GENERATOR_DIR}/buildyaml.sh >${GENERATOR_DIR}/mkdocs.yml
+ # Generate mkdocs.yaml
+ ${GENERATOR_DIR}/buildyaml.sh ${MKDOCS_DIR} ${SITE_DIR} ${lang}>${MKDOCS_CONFIG_FILE}
-echo "Fixing links"
+ echo "Fixing links"
-# Fix links (recursively, all types, executing replacements)
-${GENERATOR_DIR}/checklinks.sh -rax
+ # Fix links (recursively, all types, executing replacements)
+ ${GENERATOR_DIR}/checklinks.sh -rax
-if [ "${1}" != "nomkdocs" ] ; then
echo "Calling mkdocs"
# Build html docs
- mkdocs build --config-file=${GENERATOR_DIR}/mkdocs.yml
-fi
+ mkdocs build --config-file="${MKDOCS_CONFIG_FILE}"
+
+ # Fix edit buttons for the markdowns that are not on the main netdata repo
+ find "${GENERATOR_DIR}/${SITE_DIR}/${GO_D_DIR}" -name "*.html" -print0 | xargs -0 sed -i -e 's/https:\/\/github.com\/netdata\/netdata\/blob\/master\/collectors\/go.d.plugin/https:\/\/github.com\/netdata\/go.d.plugin\/blob\/master/g'
+ if [ "${lang}" != "en" ] ; then
+ find "${GENERATOR_DIR}/${SITE_DIR}" -name "*.html" -print0 | xargs -0 sed -i -e 's/https:\/\/github.com\/netdata\/netdata\/blob\/master\/\S*md/https:\/\/github.com\/netdata\/localization\//g'
+ fi
+}
+
+for d in "en" $(find ${LOC_DIR} -mindepth 1 -maxdepth 1 -name .git -prune -o -type d -printf '%f ') ; do
+ echo "Preparing source for $d"
+ cp -a ${SRC_DIR}/* ${DOCS_DIR}/
+ if [ "${d}" != "en" ] ; then
+ cp -a ${LOC_DIR}/${d}/* ${DOCS_DIR}/
+ fi
+ prep_html $d
+ rm -rf ${DOCS_DIR}/*
+done
+
+# Remove cloned projects and temp directories
+rm -rf ${GO_D_DIR} ${LOC_DIR} ${DOCS_DIR} ${SRC_DIR}
echo "Finished"
diff --git a/docs/generator/buildyaml.sh b/docs/generator/buildyaml.sh
index a86b1392e..553f60c82 100755
--- a/docs/generator/buildyaml.sh
+++ b/docs/generator/buildyaml.sh
@@ -1,7 +1,12 @@
#!/bin/bash
GENERATOR_DIR="docs/generator"
-cd ${GENERATOR_DIR}/src
+
+docs_dir="${1}"
+site_dir="${2}"
+language="${3}"
+
+cd ${GENERATOR_DIR}/${docs_dir}
# create yaml nav subtree with all the files directly under a specific directory
# arguments:
@@ -48,8 +53,8 @@ repo_name: GitHub
edit_uri: blob/master
site_description: Netdata Documentation
copyright: Netdata, 2018
-docs_dir: src
-site_dir: build
+docs_dir: '${docs_dir}'
+site_dir: '${site_dir}'
#use_directory_urls: false
strict: true
extra:
@@ -64,6 +69,7 @@ theme:
name: "material"
custom_dir: custom/themes/material
favicon: custom/img/favicon.ico
+ language: '${language}'
extra_css:
- "https://cdnjs.cloudflare.com/ajax/libs/cookieconsent2/3.1.0/cookieconsent.min.css"
- "custom/css/netdata.css"
@@ -167,43 +173,58 @@ navpart 3 collectors/statsd.plugin
navpart 3 collectors/cgroups.plugin
navpart 3 collectors/idlejitter.plugin
navpart 3 collectors/tc.plugin
-navpart 3 collectors/nfacct.plugin
navpart 3 collectors/checks.plugin
navpart 3 collectors/diskspace.plugin
navpart 3 collectors/freebsd.plugin
navpart 3 collectors/macos.plugin
navpart 2 collectors/plugins.d "" "External plugins"
-navpart 3 collectors/python.d.plugin "" "Python modules" 3
-navpart 3 collectors/node.d.plugin "" "Node.js modules" 3
-echo -ne " - BASH modules:
+
+echo -ne " - Go:
+ - 'collectors/go.d.plugin/README.md'
+"
+navpart 4 collectors/go.d.plugin "" "Modules" 3 excludefirstlevel
+
+echo -ne " - Python:
+ - 'collectors/python.d.plugin/README.md'
+"
+navpart 4 collectors/python.d.plugin "" "Modules" 3 excludefirstlevel
+
+echo -ne " - Node.js:
+ - 'collectors/node.d.plugin/README.md'
+"
+navpart 4 collectors/node.d.plugin "" "Modules" 3 excludefirstlevel
+
+echo -ne " - BASH:
- 'collectors/charts.d.plugin/README.md'
- - 'collectors/charts.d.plugin/ap/README.md'
- - 'collectors/charts.d.plugin/apcupsd/README.md'
- - 'collectors/charts.d.plugin/example/README.md'
- - 'collectors/charts.d.plugin/libreswan/README.md'
- - 'collectors/charts.d.plugin/nut/README.md'
- - 'collectors/charts.d.plugin/opensips/README.md'
- - Obsolete BASH modules:
- - 'collectors/charts.d.plugin/mem_apps/README.md'
- - 'collectors/charts.d.plugin/postfix/README.md'
- - 'collectors/charts.d.plugin/tomcat/README.md'
- - 'collectors/charts.d.plugin/sensors/README.md'
- - 'collectors/charts.d.plugin/cpu_apps/README.md'
- - 'collectors/charts.d.plugin/squid/README.md'
- - 'collectors/charts.d.plugin/nginx/README.md'
- - 'collectors/charts.d.plugin/hddtemp/README.md'
- - 'collectors/charts.d.plugin/cpufreq/README.md'
- - 'collectors/charts.d.plugin/mysql/README.md'
- - 'collectors/charts.d.plugin/exim/README.md'
- - 'collectors/charts.d.plugin/apache/README.md'
- - 'collectors/charts.d.plugin/load_average/README.md'
- - 'collectors/charts.d.plugin/phpfpm/README.md'
+ - Modules:
+ - 'collectors/charts.d.plugin/ap/README.md'
+ - 'collectors/charts.d.plugin/apcupsd/README.md'
+ - 'collectors/charts.d.plugin/example/README.md'
+ - 'collectors/charts.d.plugin/libreswan/README.md'
+ - 'collectors/charts.d.plugin/nut/README.md'
+ - 'collectors/charts.d.plugin/opensips/README.md'
+ - Obsolete Modules:
+ - 'collectors/charts.d.plugin/mem_apps/README.md'
+ - 'collectors/charts.d.plugin/postfix/README.md'
+ - 'collectors/charts.d.plugin/tomcat/README.md'
+ - 'collectors/charts.d.plugin/sensors/README.md'
+ - 'collectors/charts.d.plugin/cpu_apps/README.md'
+ - 'collectors/charts.d.plugin/squid/README.md'
+ - 'collectors/charts.d.plugin/nginx/README.md'
+ - 'collectors/charts.d.plugin/hddtemp/README.md'
+ - 'collectors/charts.d.plugin/cpufreq/README.md'
+ - 'collectors/charts.d.plugin/mysql/README.md'
+ - 'collectors/charts.d.plugin/exim/README.md'
+ - 'collectors/charts.d.plugin/apache/README.md'
+ - 'collectors/charts.d.plugin/load_average/README.md'
+ - 'collectors/charts.d.plugin/phpfpm/README.md'
"
navpart 3 collectors/fping.plugin
navpart 3 collectors/freeipmi.plugin
navpart 3 collectors/cups.plugin
+navpart 3 collectors/nfacct.plugin
echo -ne " - 'docs/Third-Party-Plugins.md'
"
diff --git a/docs/generator/checklinks.sh b/docs/generator/checklinks.sh
index d0c3b165c..6538d39b7 100755
--- a/docs/generator/checklinks.sh
+++ b/docs/generator/checklinks.sh
@@ -36,72 +36,6 @@ fix () {
fi
}
-ck_netdata_absolute () {
- f=$1
- alnk=$2
- lnkinfile=$3
- testURL "$alnk"
-
- if [[ $f =~ ^(.*)/([^/]*)$ ]] ; then
- fpath="${BASH_REMATCH[1]}"
- dbg "-- Current file is at $fpath"
- fi
-
- if [ $? -eq 0 ] ; then
- rlnk=$(echo "$alnk" | sed 's/https:\/\/github.com\/netdata\/netdata\/....\/master\///g')
- case $rlnk in
- \#* ) dbg "-- (#somelink)" ;;
- */ ) dbg "-- # (path/)" ;;
- */#* ) dbg "-- # (path/#somelink)" ;;
- */*.md ) dbg "-- # (path/filename.md)" ;;
- */*.md#* ) dbg "-- # (path/filename.md#somelink)" ;;
- *#* )
- dbg "-- # (path#somelink) -> (path/#somelink)"
- if [[ $rlnk =~ ^(.*)#(.*)$ ]] ; then
- dbg "-- $rlnk -> ${BASH_REMATCH[1]}/#${BASH_REMATCH[2]}"
- rlnk="${BASH_REMATCH[1]}/#${BASH_REMATCH[2]}"
- fi
- ;;
- * )
- if [ -f "$rlnk" ] ; then
- dbg "-- # (path/someotherfile) $rlnk"
- else
- if [ -d "$rlnk" ] ; then
- dbg "-- # (path) -> (path/)"
- rlnk="$rlnk/"
- else
- echo "-- ERROR: $f - $alnk is neither a file nor a directory. Giving up!"
- EXITCODE=1
- return
- fi
- fi
- ;;
- esac
-
- if [[ $rlnk =~ ^(.*)/([^/]*)$ ]] ; then
- abspath="${BASH_REMATCH[1]}"
- rest="${BASH_REMATCH[2]}"
- dbg "-- Target file is at $abspath"
- fi
- relativelink=$(realpath --relative-to="$fpath" "$abspath")
- if [ $? -eq 0 ] ; then
- srch=$(echo "$lnkinfile" | sed 's/\//\\\//g')
- if [ "$relativelink" = "." ] ; then
- rplc=$(echo "$rest" | sed 's/\//\\\//g')
- else
- rplc=$(echo "$relativelink/$rest" | sed 's/\//\\\//g')
- fi
- fix "sed -i 's/($srch)/($rplc)/g' $f"
- else
- echo "-- ERROR: $f - Can't determine relative path of $alnk"
- fi
- else
- echo "-- ERROR: $f - $alnk is a broken link"
- EXITCODE=1
- return
- fi
-}
-
testURL () {
if [ "$TESTURLS" -eq 0 ] ; then return 0 ; fi
dbg "-- Testing URL $1"
@@ -278,7 +212,7 @@ ck_netdata_relative () {
if [[ ! -z $s ]] ; then
srch=$(echo "$rlnk" | sed 's/\//\\\//g')
rplc=$(echo "$s" | sed 's/\//\\\//g')
- fix "sed -i 's/($srch)/($rplc)/g' $GENERATOR_DIR/src/$f"
+ fix "sed -i 's/($srch)/($rplc)/g' $GENERATOR_DIR/doc/$f"
fi
}
@@ -299,8 +233,8 @@ checklinks () {
if [ "$CHKWIKI" -eq 1 ] ; then echo "-- WARNING: $f - $lnk points to the wiki. Please replace it manually" ; fi
;;
https://github.com/netdata/netdata/????/master* )
- dbg "-- Absolute link $lnk"
- if [ "$CHKABSOLUTE" -eq 1 ] ; then ck_netdata_absolute "$f" "$lnk" "$lnk" ; fi
+ echo "-- ERROR: $f - $lnk is an absolute link to a netdata file. Please convert to relative."
+ EXITCODE=1
;;
http* )
dbg "-- External link $lnk"
diff --git a/docs/generator/custom/img/geography-16.png b/docs/generator/custom/img/geography-16.png
new file mode 100644
index 000000000..48391f958
--- /dev/null
+++ b/docs/generator/custom/img/geography-16.png
Binary files differ
diff --git a/docs/generator/custom/themes/material/partials/footer.html b/docs/generator/custom/themes/material/partials/footer.html
index fe232b6d5..0631a3042 100644
--- a/docs/generator/custom/themes/material/partials/footer.html
+++ b/docs/generator/custom/themes/material/partials/footer.html
@@ -52,3 +52,16 @@
</div>
</footer>
<script>!function(e,a,t,n,o,c,i){e.GoogleAnalyticsObject=o,e.ga=e.ga||function(){(e.ga.q=e.ga.q||[]).push(arguments)},e.ga.l=1*new Date,c=a.createElement(t),i=a.getElementsByTagName(t)[0],c.async=1,c.src="https://www.google-analytics.com/analytics.js",i.parentNode.insertBefore(c,i)}(window,document,"script",0,"ga"),ga("create","UA-64295674-3",""),ga("set","anonymizeIp",!0),ga("send","pageview","/doc"+window.location.pathname);var links=document.getElementsByTagName("a");if(Array.prototype.map.call(links,function(a){a.host!=document.location.host&&a.addEventListener("click",function(){var e=a.getAttribute("data-md-action")||"follow";ga("send","event","outbound",e,a.href)})}),document.forms.search){var query=document.forms.search.query;query.addEventListener("blur",function(){if(this.value){var e=document.location.pathname;ga("send","pageview",e+"?q="+this.value)}})}</script>
+<script>
+ let currentLang = getLanguage();
+
+ let sel = document.getElementById('sel');
+ let opts = sel.options;
+ for (let opt, j = 0; opt = opts[j]; j++) {
+ if (opt.value == currentLang) {
+ sel.selectedIndex = j;
+ break;
+ }
+ }
+
+</script>
diff --git a/docs/generator/custom/themes/material/partials/header.html b/docs/generator/custom/themes/material/partials/header.html
new file mode 100644
index 000000000..54086ecf5
--- /dev/null
+++ b/docs/generator/custom/themes/material/partials/header.html
@@ -0,0 +1,107 @@
+<header class="md-header" data-md-component="header">
+ <nav class="md-header-nav md-grid">
+ <div class="md-flex">
+ <div class="md-flex__cell md-flex__cell--shrink">
+ <a href="{{ config.site_url | default(nav.homepage.url, true) | url }}" title="{{ config.site_name }}" class="md-header-nav__button md-logo">
+ {% if config.theme.logo.icon %}
+ <i class="md-icon">{{ config.theme.logo.icon }}</i>
+ {% else %}
+ <img src="{{ config.theme.logo | url }}" width="24" height="24">
+ {% endif %}
+ </a>
+ </div>
+ <div class="md-flex__cell md-flex__cell--shrink">
+ <label class="md-icon md-icon--menu md-header-nav__button" for="__drawer"></label>
+ </div>
+ <div class="md-flex__cell md-flex__cell--stretch">
+ <div class="md-flex__ellipsis md-header-nav__title" data-md-component="title">
+ {% block site_name %}
+ {% if config.site_name == page.title %}
+ {{ config.site_name }}
+ {% else %}
+ <span class="md-header-nav__topic">
+ {{ config.site_name }}
+ </span>
+ <span class="md-header-nav__topic">
+ {{ page.title }}
+ </span>
+ {% endif %}
+ {% endblock %}
+ </div>
+ </div>
+ <div class="md-flex__cell md-flex__cell--shrink">
+ {% block search_box %}
+ {% if "search" in config["plugins"] %}
+ <label class="md-icon md-icon--search md-header-nav__button" for="__search"></label>
+ {% include "partials/search.html" %}
+ {% endif %}
+ {% endblock %}
+ </div>
+
+ <!-- netdata -->
+ <style>
+ .language-selector li {
+ list-style: none;
+ }
+
+ .language-option.selected {
+ background-color: #ccc;
+ }
+ </style>
+ <script>
+ function getLanguage() {
+ const lang = window.location.pathname.split("/")[1];
+
+ if (lang.length == 0 || lang.length > 2) {
+ return "en";
+ }
+
+ return lang;
+ }
+
+ function languagePrefix(lang) {
+ if (lang === "en") {
+ return "";
+ }
+
+ return `/${lang}`;
+ }
+
+ function updatePathname(pathname, lang) {
+ if (currentLang !== "en") {
+ const parts = pathname.split("/");
+ parts.shift();
+ parts.shift();
+ pathname = `/${parts.join("/")}`;
+ }
+
+ return `${languagePrefix(lang)}${pathname}`;
+ }
+
+ function setLanguage(sel) {
+ if (sel.value === currentLang) {
+ return;
+ }
+
+ window.location.pathname = updatePathname(window.location.pathname, sel.value);
+ }
+ </script>
+
+ <div style="vertical-align: middle; white-space: nowrap; padding-left: 20px;" class="md-flex__cell md-flex__cell--shrink">
+ <img src="/custom/img/geography-16.png" style="vertical-align: middle;"/>
+ <select id="sel" onchange="setLanguage(this);" style="vertical-align: middle; background-color: #3f51b5; color: white; border: none;">
+ <option href="#" value='en'>English</option>
+ <option href="#" value='zh'>中文</option>
+ </select>
+ </div>
+
+ {% if config.repo_url %}
+ <div class="md-flex__cell md-flex__cell--shrink">
+ <div class="md-header-nav__source">
+ {% include "partials/source.html" %}
+ </div>
+ </div>
+ {% endif %}
+ </div>
+ </nav>
+</header>