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101 lines
3.7 KiB
101 lines
3.7 KiB
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# Copyright (C) 2011-2012 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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# Split the version file into lines. |
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string(REGEX MATCHALL "[^\r\n]+" version_lines "${BASE_VERSION}") |
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set(BASE_VERSION_COUNT 0) |
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foreach(version_line IN LISTS version_lines) |
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set(BASE_VERSION_${BASE_VERSION_COUNT} "${version_line}") |
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# Find the last space |
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string(STRIP "${version_line}" version_line) |
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string(LENGTH "${version_line}" version_line_length) |
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set(version_line_split ${version_line_length}) |
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foreach(i RANGE ${version_line_length}) |
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if(${i} LESS ${version_line_length}) |
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string(SUBSTRING "${version_line}" ${i} 1 version_line_char) |
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if(version_line_char STREQUAL " ") |
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set(version_line_split ${i}) |
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endif() |
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endif() |
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endforeach() |
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# Get everything before the last space |
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string(SUBSTRING "${version_line}" 0 ${version_line_split} version_line_name) |
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string(STRIP "${version_line_name}" BASE_NAME_${BASE_VERSION_COUNT}) |
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# Get everything after the last space |
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if(${version_line_split} LESS ${version_line_length}) |
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math(EXPR num_length "${version_line_length} - ${version_line_split}") |
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string(SUBSTRING "${version_line}" ${version_line_split} ${num_length} version_line_num) |
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string(STRIP "${version_line_num}" BASE_NUMBER_${BASE_VERSION_COUNT}) |
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endif() |
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math(EXPR BASE_VERSION_COUNT "${BASE_VERSION_COUNT} + 1") |
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endforeach() |
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# Check for a git directory and fill in the git commit hash if one exists. |
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unset(GIT_COMMIT) |
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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 "${git_head}" git_head) |
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if("${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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set(GIT_SUFFIX_${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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