Introduce bootstrap.sh

bootstrap-vcpkg.sh

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+vcpkgRootDir=$(X= cd -- "$(dirname -- "$0")" && pwd -P)
+$vcpkgRootDir/scripts/bootstrap.sh

scripts/bootstrap.sh

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+#!/bin/sh
+
+# Find vcpkg-root
+vcpkgRootDir=$(X= cd -- "$(dirname -- "$0")" && pwd -P)
+while [ "$vcpkgRootDir" != "/" ] && ! [ -e "$vcpkgRootDir/.vcpkg-root" ]; do
+    vcpkgRootDir="$(dirname "$vcpkgRootDir")"
+done
+
+downloadsDir="$vcpkgRootDir/downloads"
+
+extractStringBetweenDelimiters()
+{
+    input=$1;leftDelim=$2;rightDelim=$3
+    output="${input##*$leftDelim}"
+    output="${output%%$rightDelim*}"
+    echo "$output"
+}
+
+vcpkgCheckRepoTool()
+{
+    __tool=$1
+    if ! command -v "$__tool" >/dev/null 2>&1 ; then
+        echo "Could not find $__tool. Please install it (and other dependencies) with:"
+        echo "sudo apt-get install curl unzip tar"
+        exit 1
+    fi
+}
+
+vcpkgCheckEqualFileHash()
+{
+    url=$1; filePath=$2; expectedHash=$3
+
+    actualHash=$(shasum -a 512 "$filePath") # sha512sum not available on osx
+    actualHash="${actualHash%% *}" # shasum returns [hash filename], so get the first word
+
+    if ! [ "$expectedHash" = "$actualHash" ]; then
+        echo ""
+        echo "File does not have expected hash:"
+        echo "              url: [ $url ]"
+        echo "        File path: [ $downloadPath ]"
+        echo "    Expected hash: [ $sha512 ]"
+        echo "      Actual hash: [ $actualHash ]"
+        exit
+    fi
+}
+
+vcpkgDownloadFile()
+{
+    url=$1; downloadPath=$2 sha512=$3
+    vcpkgCheckRepoTool "curl"
+    rm -rf "$downloadPath.part"
+    curl -L $url --create-dirs --output "$downloadPath.part" || exit 1
+
+    vcpkgCheckEqualFileHash $url "$downloadPath.part" $sha512
+    mv "$downloadPath.part" "$downloadPath"
+}
+
+vcpkgExtractArchive()
+{
+    archive=$1; toPath=$2
+    rm -rf "$toPath" "$toPath.partial"
+    mkdir -p "$toPath.partial"
+
+    archiveType="${archive##*.}"
+    if [ "$archiveType" = "zip" ]; then
+        vcpkgCheckRepoTool "unzip"
+        $(cd "$toPath.partial" && unzip -qqo "$archive")
+    else
+        vcpkgCheckRepoTool "tar"
+        $(cd "$toPath.partial" && tar xzf "$archive")
+    fi
+    mv "$toPath.partial" "$toPath"
+}
+
+fetchTool()
+{
+    tool=$1; UNAME=$2; __output=$3
+
+    if [ "$tool" = "" ]; then
+        echo "No tool name provided"
+        return 1
+    fi
+
+    if [ "$UNAME" = "Linux" ]; then
+        os="linux"
+    elif [ "$UNAME" = "Darwin" ]; then
+        os="osx"
+    else
+        echo "Unknown uname: $UNAME"
+        return 1
+    fi
+
+    xmlFileAsString=`cat $vcpkgRootDir/scripts/vcpkgTools.xml`
+    toolRegexStart="<tool name=\"$tool\" os=\"$os\">"
+    toolData="$(extractStringBetweenDelimiters "$xmlFileAsString" "$toolRegexStart" "</tool>")"
+    if [ "$toolData" = "" ]; then
+        echo "Unknown tool: $tool"
+        return 1
+    fi
+
+    version="$(extractStringBetweenDelimiters "$toolData" "<version>" "</version>")"
+
+    toolPath="$downloadsDir/tools/$tool-$version-$os"
+
+    exeRelativePath="$(extractStringBetweenDelimiters "$toolData" "<exeRelativePath>" "</exeRelativePath>")"
+    exePath="$toolPath/$exeRelativePath"
+
+    if [ -e "$exePath" ]; then
+        eval $__output="'$exePath'"
+        return 0
+    fi
+
+    isArchive=true
+    if [ $isArchive = true ]; then
+        archiveName="$(extractStringBetweenDelimiters "$toolData" "<archiveName>" "</archiveName>")"
+        downloadPath="$downloadsDir/$archiveName"
+    else
+        echo "Non-archives not supported yet"
+        return 1
+    fi
+
+    url="$(extractStringBetweenDelimiters "$toolData" "<url>" "</url>")"
+    sha512="$(extractStringBetweenDelimiters "$toolData" "<sha512>" "</sha512>")"
+    if ! [ -e "$downloadPath" ]; then
+        echo "Downloading $tool..."
+        vcpkgDownloadFile $url "$downloadPath" $sha512
+        echo "Downloading $tool... done."
+    else
+        vcpkgCheckEqualFileHash $url "$downloadPath" $sha512
+    fi
+
+    if [ $isArchive = true ]; then
+        echo "Extracting $tool..."
+        vcpkgExtractArchive "$downloadPath" "$toolPath"
+        echo "Extracting $tool... done."
+    fi
+
+    if ! [ -e "$exePath" ]; then
+        echo "Could not detect or download $tool"
+        return 1
+    fi
+
+    eval $__output="'$exePath'"
+    return 0
+}
+
+selectCXX()
+{
+    __output=$1
+
+    if [ "x$CXX" = "x" ]; then
+        CXX=g++
+        if which g++-7 >/dev/null 2>&1; then
+            CXX=g++-7
+        elif which g++-6 >/dev/null 2>&1; then
+            CXX=g++-6
+        fi
+    fi
+
+    gccversion="$("$CXX" -v 2>&1)"
+    gccversion="$(extractStringBetweenDelimiters "$gccversion" "gcc version " ".")"
+    if [ "$gccversion" = "5" ]; then
+        echo "CXX ($CXX) is too old; please install a newer compiler such as g++-7."
+        echo "sudo add-apt-repository ppa:ubuntu-toolchain-r/test -y"
+        echo "sudo apt-get update -y"
+        echo "sudo apt-get install g++-7 -y"
+        return 1
+    fi
+
+    eval $__output="'$CXX'"
+}
+
+# Preparation
+UNAME="$(uname)"
+fetchTool "cmake" "$UNAME" cmakeExe || exit 1
+fetchTool "ninja" "$UNAME" ninjaExe || exit 1
+selectCXX CXX || exit 1
+
+# Do the build
+buildDir="$vcpkgRootDir/toolsrc/build.rel"
+rm -rf "$buildDir"
+mkdir -p "$buildDir"
+
+(cd "$buildDir" && CXX=$CXX "$cmakeExe" .. -DCMAKE_BUILD_TYPE=Release -G "Ninja" "-DCMAKE_MAKE_PROGRAM=$ninjaExe")
+(cd "$buildDir" && "$cmakeExe" --build .)
+
+rm -rf "$vcpkgRootDir/vcpkg"
+cp "$buildDir/vcpkg" "$vcpkgRootDir/"