| Haibo Huang | d00577c | 2020-02-28 16:35:48 -0800 | [diff] [blame] | 1 | # Distributed under the OSI-approved BSD 3-Clause License. See accompanying |
| 2 | # file Copyright.txt or https://cmake.org/licensing for details. |
| 3 | |
| 4 | #[=======================================================================[.rst: |
| 5 | FindHg |
| 6 | ------ |
| 7 | |
| 8 | Extract information from a mercurial working copy. |
| 9 | |
| 10 | The module defines the following variables: |
| 11 | |
| 12 | :: |
| 13 | |
| 14 | HG_EXECUTABLE - path to mercurial command line client (hg) |
| 15 | HG_FOUND - true if the command line client was found |
| 16 | HG_VERSION_STRING - the version of mercurial found |
| 17 | |
| 18 | If the command line client executable is found the following macro is defined: |
| 19 | |
| 20 | :: |
| 21 | |
| 22 | HG_WC_INFO(<dir> <var-prefix>) |
| 23 | |
| 24 | Hg_WC_INFO extracts information of a mercurial working copy |
| 25 | at a given location. This macro defines the following variables: |
| 26 | |
| 27 | :: |
| 28 | |
| 29 | <var-prefix>_WC_CHANGESET - current changeset |
| 30 | <var-prefix>_WC_REVISION - current revision |
| 31 | |
| 32 | Example usage: |
| 33 | |
| 34 | :: |
| 35 | |
| 36 | find_package(Hg) |
| 37 | if(HG_FOUND) |
| 38 | message("hg found: ${HG_EXECUTABLE}") |
| 39 | HG_WC_INFO(${PROJECT_SOURCE_DIR} Project) |
| 40 | message("Current revision is ${Project_WC_REVISION}") |
| 41 | message("Current changeset is ${Project_WC_CHANGESET}") |
| 42 | endif() |
| 43 | #]=======================================================================] |
| 44 | |
| 45 | find_program(HG_EXECUTABLE |
| 46 | NAMES hg |
| 47 | PATHS |
| 48 | [HKEY_LOCAL_MACHINE\\Software\\TortoiseHG] |
| 49 | PATH_SUFFIXES Mercurial |
| 50 | DOC "hg command line client" |
| 51 | ) |
| 52 | mark_as_advanced(HG_EXECUTABLE) |
| 53 | |
| 54 | if(HG_EXECUTABLE) |
| 55 | set(_saved_lc_all "$ENV{LC_ALL}") |
| 56 | set(ENV{LC_ALL} "C") |
| 57 | |
| 58 | set(_saved_language "$ENV{LANGUAGE}") |
| 59 | set(ENV{LANGUAGE}) |
| 60 | |
| 61 | execute_process(COMMAND ${HG_EXECUTABLE} --version |
| 62 | OUTPUT_VARIABLE hg_version |
| 63 | ERROR_QUIET |
| 64 | RESULT_VARIABLE hg_result |
| 65 | OUTPUT_STRIP_TRAILING_WHITESPACE) |
| 66 | |
| 67 | set(ENV{LC_ALL} ${_saved_lc_all}) |
| 68 | set(ENV{LANGUAGE} ${_saved_language}) |
| 69 | |
| 70 | if(hg_result MATCHES "is not a valid Win32 application") |
| 71 | set_property(CACHE HG_EXECUTABLE PROPERTY VALUE "HG_EXECUTABLE-NOTFOUND") |
| 72 | endif() |
| 73 | if(hg_version MATCHES "^Mercurial Distributed SCM \\(version ([0-9][^)]*)\\)") |
| 74 | set(HG_VERSION_STRING "${CMAKE_MATCH_1}") |
| 75 | endif() |
| 76 | unset(hg_version) |
| 77 | |
| 78 | macro(HG_WC_INFO dir prefix) |
| 79 | execute_process(COMMAND ${HG_EXECUTABLE} id -i -n |
| 80 | WORKING_DIRECTORY ${dir} |
| 81 | RESULT_VARIABLE hg_id_result |
| 82 | ERROR_VARIABLE hg_id_error |
| 83 | OUTPUT_VARIABLE ${prefix}_WC_DATA |
| 84 | OUTPUT_STRIP_TRAILING_WHITESPACE) |
| 85 | if(NOT ${hg_id_result} EQUAL 0) |
| 86 | message(SEND_ERROR "Command \"${HG_EXECUTBALE} id -n\" in directory ${dir} failed with output:\n${hg_id_error}") |
| 87 | endif() |
| 88 | |
| 89 | string(REGEX REPLACE "([0-9a-f]+)\\+? [0-9]+\\+?" "\\1" ${prefix}_WC_CHANGESET ${${prefix}_WC_DATA}) |
| 90 | string(REGEX REPLACE "[0-9a-f]+\\+? ([0-9]+)\\+?" "\\1" ${prefix}_WC_REVISION ${${prefix}_WC_DATA}) |
| 91 | endmacro(HG_WC_INFO) |
| 92 | endif() |
| 93 | |
| 94 | include(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake) |
| 95 | find_package_handle_standard_args(Hg |
| 96 | REQUIRED_VARS HG_EXECUTABLE |
| 97 | VERSION_VAR HG_VERSION_STRING) |