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66 lines
2.3 KiB
66 lines
2.3 KiB
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# Copyright (C) 2011 Daniel Scharrer |
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# |
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# This software is provided 'as-is', without any express or implied |
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# warranty. In no event will the author(s) be held liable for any damages |
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# arising from the use of this software. |
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# |
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# Permission is granted to anyone to use this software for any purpose, |
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# including commercial applications, and to alter it and redistribute it |
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# freely, subject to the following restrictions: |
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# |
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# 1. The origin of this software must not be misrepresented; you must not |
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# claim that you wrote the original software. If you use this software |
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# in a product, an acknowledgment in the product documentation would be |
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# appreciated but is not required. |
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# 2. Altered source versions must be plainly marked as such, and must not be |
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# misrepresented as being the original software. |
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# 3. This notice may not be removed or altered from any source distribution. |
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cmake_minimum_required(VERSION 2.8) |
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# CMake script that reads a VERSION file and the current git history and the calls configure_file(). |
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# This is used by version_file() in VersionString.cmake |
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if((NOT DEFINED INPUT) OR (NOT DEFINED OUTPUT) OR (NOT DEFINED VERSION_FILE) OR (NOT DEFINED GIT_DIR)) |
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message(SEND_ERROR "Invalid arguments.") |
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endif() |
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file(READ "${VERSION_FILE}" BASE_VERSION) |
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string(STRIP "${BASE_VERSION}" BASE_VERSION) |
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if(EXISTS "${GIT_DIR}") |
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file(READ "${GIT_DIR}/HEAD" GIT_HEAD) |
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string(STRIP "${GIT_HEAD}" GIT_HEAD) |
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unset(GIT_COMMIT) |
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if("${GIT_HEAD}" MATCHES "^ref\\:") |
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# Remove the first for characters from GIT_HEAD to get GIT_REF. |
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# We can't use a length of -1 for string(SUBSTRING) as cmake < 2.8.5 doesn't support it. |
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string(LENGTH "${GIT_HEAD}" GIT_HEAD_LENGTH) |
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math(EXPR GIT_REF_LENGTH "${GIT_HEAD_LENGTH} - 4") |
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string(SUBSTRING "${GIT_HEAD}" 4 ${GIT_REF_LENGTH} GIT_REF) |
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string(STRIP "${GIT_REF}" GIT_REF) |
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file(READ "${GIT_DIR}/${GIT_REF}" GIT_HEAD) |
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string(STRIP "${GIT_HEAD}" GIT_HEAD) |
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endif() |
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string(REGEX MATCH "[0-9A-Za-z]+" GIT_COMMIT "${GIT_HEAD}") |
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# Create variables for all prefixes of the git comit ID. |
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if(GIT_COMMIT) |
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string(TOLOWER "${GIT_COMMIT}" GIT_COMMIT) |
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string(LENGTH "${GIT_COMMIT}" GIT_COMMIT_LENGTH) |
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foreach(i RANGE "${GIT_COMMIT_LENGTH}") |
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string(SUBSTRING "${GIT_COMMIT}" 0 ${i} GIT_COMMIT_PREFIX_${i}) |
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endforeach() |
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endif() |
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endif() |
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configure_file("${INPUT}" "${OUTPUT}" ESCAPE_QUOTES)
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