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139 lines
4.7 KiB
139 lines
4.7 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_SOURCES) OR (NOT DEFINED GIT_DIR)) |
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message(SEND_ERROR "Invalid arguments.") |
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endif() |
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set(var "") |
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foreach(arg IN LISTS VERSION_SOURCES) |
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if(var STREQUAL "") |
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set(var ${arg}) |
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else() |
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file(READ "${arg}" ${var}) |
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string(STRIP "${${var}}" ${var}) |
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string(REGEX REPLACE "\r\n" "\n" ${var} "${${var}}") |
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string(REGEX REPLACE "\r" "\n" ${var} "${${var}}") |
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# Split the version file into lines. |
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string(REGEX MATCHALL "[^\r\n]+" lines "${${var}}") |
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set(${var}_COUNT 0) |
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foreach(line IN LISTS lines) |
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set(${var}_${${var}_COUNT} "${line}") |
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# Find the first and last spaces |
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string(STRIP "${line}" line) |
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string(LENGTH "${line}" line_length) |
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set(first_space -1) |
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set(last_space ${line_length}) |
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foreach(i RANGE ${line_length}) |
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if(${i} LESS ${line_length}) |
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string(SUBSTRING "${line}" ${i} 1 line_char) |
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if(line_char STREQUAL " ") |
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set(last_space ${i}) |
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if(first_space EQUAL -1) |
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set(first_space ${i}) |
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endif() |
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endif() |
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endif() |
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endforeach() |
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# Get everything before the first space |
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if(${first_space} GREATER -1) |
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string(SUBSTRING "${line}" 0 ${first_space} line_name) |
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string(STRIP "${line_name}" ${var}_${${var}_COUNT}_SHORTNAME) |
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endif() |
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# Get everything after the first space |
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math(EXPR num_length "${line_length} - ${first_space}") |
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string(SUBSTRING "${line}" ${first_space} ${num_length} line_num) |
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string(STRIP "${line_num}" ${var}_${${var}_COUNT}_STRING) |
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# Get everything before the last space |
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string(SUBSTRING "${line}" 0 ${last_space} line_name) |
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string(STRIP "${line_name}" ${var}_${${var}_COUNT}_NAME) |
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# Get everything after the last space |
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if(${last_space} LESS ${line_length}) |
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math(EXPR num_length "${line_length} - ${last_space}") |
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string(SUBSTRING "${line}" ${last_space} ${num_length} line_num) |
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string(STRIP "${line_num}" ${var}_${${var}_COUNT}_NUMBER) |
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endif() |
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math(EXPR ${var}_COUNT "${${var}_COUNT} + 1") |
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endforeach() |
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string(REGEX REPLACE "\n\n.*$" "" ${var}_HEAD "${${var}}") |
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string(STRIP "${${var}_HEAD}" ${var}_HEAD) |
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string(REGEX MATCH "\n\n.*" ${var}_TAIL "${${var}}") |
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string(STRIP "${${var}_TAIL}" ${var}_TAIL) |
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string(REGEX REPLACE "\n" "\\\\n" ${var} "${${var}}") |
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string(REGEX REPLACE "\n" "\\\\n" ${var}_HEAD "${${var}_HEAD}") |
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string(REGEX REPLACE "\n" "\\\\n" ${var}_TAIL "${${var}_TAIL}") |
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set(var "") |
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endif() |
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endforeach() |
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# Check for a git directory and fill in the git commit hash if one exists. |
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unset(GIT_COMMIT) |
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if(EXISTS "${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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