package: add support for nightly packages

Arduino IDE has support for “nightly” versions of boards manager
packages (arduino/Arduino#3449). These versions
are distinguished by the lack of “size” and “checksum” fields in json
file. IDE always uninstalls previously installed nightly version before
installing the new one.

This change adds support for generation of nightly package builds.

Author: igrr

package/build_boards_manager_package.sh

@@ -1,8 +1,19 @@
 #!/bin/bash
 #
+next="2.4.0"
 
 # Figure out how will the package be called
-ver=`git describe --tags --always`
+ver=`git describe --exact-match`
+if [ $? -ne 0 ]; then
+    # not tagged version; generate nightly package
+    date_str=`date +"%Y%m%d"`
+    is_nightly=1
+    plain_ver="${next}-nightly"
+    ver="${plain_ver}+${date_str}"
+else
+    plain_ver=$ver
+fi
+
 package_name=esp8266-$ver
 echo "Version: $ver"
 echo "Package name: $package_name"
@@ -71,7 +82,7 @@ $SED 's/recipe.hooks.core.prebuild.1.pattern.*//g' \
  > $outdir/platform.txt
 
 # Put core version and short hash of git version into core_version.h
-ver_define=`echo $ver | tr "[:lower:].-" "[:upper:]_"`
+ver_define=`echo $plain_ver | tr "[:lower:].-+" "[:upper:]_"`
 echo Ver define: $ver_define
 echo \#define ARDUINO_ESP8266_GIT_VER 0x`git rev-parse --short=8 HEAD 2>/dev/null` >$outdir/cores/esp8266/core_version.h
 echo \#define ARDUINO_ESP8266_RELEASE_$ver_define >>$outdir/cores/esp8266/core_version.h
@@ -90,14 +101,26 @@ echo Size: $size
 echo SHA-256: $sha
 
 echo "Making package_esp8266com_index.json"
-cat $srcdir/package/package_esp8266com_index.template.json | \
-jq ".packages[0].platforms[0].version = \"$ver\" | \
+
+jq_arg=".packages[0].platforms[0].version = \"$ver\" | \
     .packages[0].platforms[0].url = \"$PKG_URL\" |\
     .packages[0].platforms[0].archiveFileName = \"$package_name.zip\" |\
-    .packages[0].platforms[0].checksum = \"SHA-256:$sha\" |\
-    .packages[0].platforms[0].size = \"$size\" |\
-    .packages[0].platforms[0].help.online = \"$DOC_URL\"" \
-    > package_esp8266com_index.json
+    .packages[0].platforms[0].help.online = \"$DOC_URL\""
+
+if [ -z "$is_nightly" ]; then
+    jq_arg="$jq_arg |\
+        .packages[0].platforms[0].size = \"$size\" |\
+        .packages[0].platforms[0].checksum = \"SHA-256:$sha\" |"
+fi
+
+cat $srcdir/package/package_esp8266com_index.template.json | \
+    jq "$jq_arg" > package_esp8266com_index.json
+
+old_json=package_esp8266com_index_stable.json
+wget -O $old_json http://arduino.esp8266.com/$branch/package_esp8266com_index.json
+new_json=package_esp8266com_index.json
+
+python ../../merge_packages.py $new_json $old_json >tmp && mv tmp $new_json && rm $old_json
 
 popd
 popd

package/package_esp8266com_index.template.json

@@ -16,8 +16,6 @@
           "category": "ESP8266",
           "url": "",
           "archiveFileName": "",
-          "checksum": "",
-          "size": "",
           "help": {
             "online": ""
           },