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vcpkg/scripts/cmake/vcpkg_from_github.cmake
Robert Schumacher ae74e0bfd3
Merge pull request #5719 from donny-dont/github-url 
[vcpkg_from_github] Allow targeting Github Enterprise instances
2019-11-22 15:13:08 -08:00

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CMake
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## # vcpkg_from_github
##
## Download and extract a project from GitHub. Enables support for `install --head`.
##
## ## Usage:
## ```cmake
## vcpkg_from_github(
## OUT_SOURCE_PATH <SOURCE_PATH>
## REPO <Microsoft/cpprestsdk>
## [REF <v2.0.0>]
## [SHA512 <45d0d7f8cc350...>]
## [HEAD_REF <master>]
## [PATCHES <patch1.patch> <patch2.patch>...]
## [GITHUB_HOST <https://github.com>]
## [AUTHORIZATION_TOKEN <${SECRET_FROM_FILE}>]
## )
## ```
##
## ## Parameters:
## ### OUT_SOURCE_PATH
## Specifies the out-variable that will contain the extracted location.
##
## This should be set to `SOURCE_PATH` by convention.
##
## ### REPO
## The organization or user and repository on GitHub.
##
## ### REF
## A stable git commit-ish (ideally a tag or commit) that will not change contents. **This should not be a branch.**
##
## For repositories without official releases, this can be set to the full commit id of the current latest master.
##
## If `REF` is specified, `SHA512` must also be specified.
##
## ### SHA512
## The SHA512 hash that should match the archive (https://github.com/${REPO}/archive/${REF}.tar.gz).
##
## This is most easily determined by first setting it to `1`, then trying to build the port. The error message will contain the full hash, which can be copied back into the portfile.
##
## ### HEAD_REF
## The unstable git commit-ish (ideally a branch) to pull for `--head` builds.
##
## For most projects, this should be `master`. The chosen branch should be one that is expected to be always buildable on all supported platforms.
##
## ### PATCHES
## A list of patches to be applied to the extracted sources.
##
## Relative paths are based on the port directory.
##
## ### GITHUB_HOST
## A replacement host for enterprise GitHub instances.
##
## This field should contain the scheme, host, and port of the desired URL without a trailing slash.
##
## ### AUTHORIZATION_TOKEN
## A token to be passed via the Authorization HTTP header as "token ${AUTHORIZATION_TOKEN}".
##
## ## Notes:
## At least one of `REF` and `HEAD_REF` must be specified, however it is preferable for both to be present.
##
## This exports the `VCPKG_HEAD_VERSION` variable during head builds.
##
## ## Examples:
##
## * [cpprestsdk](https://github.com/Microsoft/vcpkg/blob/master/ports/cpprestsdk/portfile.cmake)
## * [ms-gsl](https://github.com/Microsoft/vcpkg/blob/master/ports/ms-gsl/portfile.cmake)
## * [beast](https://github.com/Microsoft/vcpkg/blob/master/ports/beast/portfile.cmake)
function(vcpkg_from_github)
set(oneValueArgs OUT_SOURCE_PATH REPO REF SHA512 HEAD_REF GITHUB_HOST AUTHORIZATION_TOKEN)
set(multipleValuesArgs PATCHES)
cmake_parse_arguments(_vdud "" "${oneValueArgs}" "${multipleValuesArgs}" ${ARGN})
if(NOT DEFINED _vdud_OUT_SOURCE_PATH)
message(FATAL_ERROR "OUT_SOURCE_PATH must be specified.")
endif()
if((DEFINED _vdud_REF AND NOT DEFINED _vdud_SHA512) OR (NOT DEFINED _vdud_REF AND DEFINED _vdud_SHA512))
message(FATAL_ERROR "SHA512 must be specified if REF is specified.")
endif()
if(NOT DEFINED _vdud_REPO)
message(FATAL_ERROR "The GitHub repository must be specified.")
endif()
if(NOT DEFINED _vdud_REF AND NOT DEFINED _vdud_HEAD_REF)
message(FATAL_ERROR "At least one of REF and HEAD_REF must be specified.")
endif()
if(NOT DEFINED _vdud_GITHUB_HOST)
set(GITHUB_HOST https://github.com)
set(GITHUB_API_URL https://api.github.com)
else()
set(GITHUB_HOST ${_vdud_GITHUB_HOST})
set(GITHUB_API_URL ${_vdud_GITHUB_HOST}/api/v3)
endif()
if(DEFINED _vdud_AUTHORIZATION_TOKEN)
set(HEADERS "HEADERS" "Authorization: token ${_vdud_AUTHORIZATION_TOKEN}")
else()
set(HEADERS)
endif()
string(REGEX REPLACE ".*/" "" REPO_NAME ${_vdud_REPO})
string(REGEX REPLACE "/.*" "" ORG_NAME ${_vdud_REPO})
macro(set_TEMP_SOURCE_PATH BASE BASEREF)
set(TEMP_SOURCE_PATH "${BASE}/${REPO_NAME}-${BASEREF}")
if(NOT EXISTS ${TEMP_SOURCE_PATH})
# Sometimes GitHub strips a leading 'v' off the REF.
string(REGEX REPLACE "^v" "" REF ${BASEREF})
string(REPLACE "/" "-" REF ${REF})
set(TEMP_SOURCE_PATH "${BASE}/${REPO_NAME}-${REF}")
if(NOT EXISTS ${TEMP_SOURCE_PATH})
message(FATAL_ERROR "Could not determine source path: '${BASE}/${REPO_NAME}-${BASEREF}' does not exist")
endif()
endif()
endmacro()
if(VCPKG_USE_HEAD_VERSION AND NOT DEFINED _vdud_HEAD_REF)
message(STATUS "Package does not specify HEAD_REF. Falling back to non-HEAD version.")
set(VCPKG_USE_HEAD_VERSION OFF)
endif()
# Handle --no-head scenarios
if(NOT VCPKG_USE_HEAD_VERSION)
if(NOT _vdud_REF)
message(FATAL_ERROR "Package does not specify REF. It must built using --head.")
endif()
string(REPLACE "/" "-" SANITIZED_REF "${_vdud_REF}")
vcpkg_download_distfile(ARCHIVE
URLS "${GITHUB_HOST}/${ORG_NAME}/${REPO_NAME}/archive/${_vdud_REF}.tar.gz"
SHA512 "${_vdud_SHA512}"
FILENAME "${ORG_NAME}-${REPO_NAME}-${SANITIZED_REF}.tar.gz"
${HEADERS}
)
vcpkg_extract_source_archive_ex(
OUT_SOURCE_PATH SOURCE_PATH
ARCHIVE "${ARCHIVE}"
REF "${SANITIZED_REF}"
PATCHES ${_vdud_PATCHES}
)
set(${_vdud_OUT_SOURCE_PATH} "${SOURCE_PATH}" PARENT_SCOPE)
return()
endif()
# The following is for --head scenarios
set(URL "${GITHUB_HOST}/${ORG_NAME}/${REPO_NAME}/archive/${_vdud_HEAD_REF}.tar.gz")
string(REPLACE "/" "-" SANITIZED_HEAD_REF "${_vdud_HEAD_REF}")
set(downloaded_file_name "${ORG_NAME}-${REPO_NAME}-${SANITIZED_HEAD_REF}.tar.gz")
set(downloaded_file_path "${DOWNLOADS}/${downloaded_file_name}")
if(_VCPKG_NO_DOWNLOADS)
if(NOT EXISTS ${downloaded_file_path} OR NOT EXISTS ${downloaded_file_path}.version)
message(FATAL_ERROR "Downloads are disabled, but '${downloaded_file_path}' does not exist.")
endif()
message(STATUS "Using cached ${downloaded_file_path}")
else()
if(EXISTS ${downloaded_file_path})
message(STATUS "Purging cached ${downloaded_file_path} to fetch latest (use --no-downloads to suppress)")
file(REMOVE ${downloaded_file_path})
endif()
if(EXISTS ${downloaded_file_path}.version)
file(REMOVE ${downloaded_file_path}.version)
endif()
if(EXISTS ${CURRENT_BUILDTREES_DIR}/src/head)
file(REMOVE_RECURSE ${CURRENT_BUILDTREES_DIR}/src/head)
endif()
# Try to download the file and version information from github.
vcpkg_download_distfile(ARCHIVE_VERSION
URLS "${GITHUB_API_URL}/repos/${ORG_NAME}/${REPO_NAME}/git/refs/heads/${_vdud_HEAD_REF}"
FILENAME ${downloaded_file_name}.version
SKIP_SHA512
${HEADERS}
)
vcpkg_download_distfile(ARCHIVE
URLS ${URL}
FILENAME ${downloaded_file_name}
SKIP_SHA512
${HEADERS}
)
endif()
# Parse the github refs response with regex.
# TODO: use some JSON swiss-army-knife utility instead.
file(READ "${downloaded_file_path}.version" _contents)
string(REGEX MATCH "\"sha\": \"[a-f0-9]+\"" x "${_contents}")
string(REGEX REPLACE "\"sha\": \"([a-f0-9]+)\"" "\\1" _version ${x})
# exports VCPKG_HEAD_VERSION to the caller. This will get picked up by ports.cmake after the build.
# When multiple vcpkg_from_github's are used after each other, only use the version from the first (hopefully the primary one).
if(NOT DEFINED VCPKG_HEAD_VERSION)
set(VCPKG_HEAD_VERSION ${_version} PARENT_SCOPE)
endif()
vcpkg_extract_source_archive_ex(
SKIP_PATCH_CHECK
OUT_SOURCE_PATH SOURCE_PATH
ARCHIVE "${downloaded_file_path}"
REF "${SANITIZED_HEAD_REF}"
WORKING_DIRECTORY ${CURRENT_BUILDTREES_DIR}/src/head
PATCHES ${_vdud_PATCHES}
)
set(${_vdud_OUT_SOURCE_PATH} "${SOURCE_PATH}" PARENT_SCOPE)
endfunction()
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