#!/bin/bash
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# This script checks that the runtime version number constant in the compiler
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# source and in the runtime source is the same.
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#
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# A distro can be made of the protobuf sources with only a subset of the
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# languages, so if the compiler depended on the Objective C runtime, those
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# builds would break. At the same time, we don't want the runtime source
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# depending on the compiler sources; so two copies of the constant are needed.
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set -eu
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readonly ScriptDir=$(dirname "$(echo $0 | sed -e "s,^\([^/]\),$(pwd)/\1,")")
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readonly ProtoRootDir="${ScriptDir}/../.."
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die() {
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echo "Error: $1"
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exit 1
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}
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readonly ConstantName=GOOGLE_PROTOBUF_OBJC_GEN_VERSION
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# Collect version from plugin sources.
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readonly PluginSrc="${ProtoRootDir}/src/google/protobuf/compiler/objectivec/objectivec_file.cc"
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readonly PluginVersion=$( \
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cat "${PluginSrc}" \
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| sed -n -e "s:const int32 ${ConstantName} = \([0-9]*\);:\1:p"
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)
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if [[ -z "${PluginVersion}" ]] ; then
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die "Failed to find ${ConstantName} in the plugin source (${PluginSrc})."
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fi
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# Collect version from runtime sources.
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readonly RuntimeSrc="${ProtoRootDir}/objectivec/GPBBootstrap.h"
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readonly RuntimeVersion=$( \
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cat "${RuntimeSrc}" \
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| sed -n -e "s:#define ${ConstantName} \([0-9]*\):\1:p"
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)
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if [[ -z "${RuntimeVersion}" ]] ; then
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die "Failed to find ${ConstantName} in the runtime source (${RuntimeSrc})."
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fi
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# Compare them.
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if [[ "${PluginVersion}" != "${RuntimeVersion}" ]] ; then
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die "Versions don't match!
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Plugin: ${PluginVersion} from ${PluginSrc}
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Runtime: ${RuntimeVersion} from ${RuntimeSrc}
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"
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fi
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# Success
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