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A Crystal program that returns information about the ICU install
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| require "xml" | |
| require "c/dlfcn" | |
| PKGNAME = "icu-uc" | |
| TESTFUNC = "u_init" | |
| {% if flag?(:darwin) %} | |
| SOFILE = "libicuuc.dylib" | |
| {% elsif flag?(:windows) %} | |
| SOFILE = "libicuuc.dll" | |
| {% else %} | |
| SOFILE = "libicuuc.so" | |
| {% end %} | |
| def icu_version : String | |
| version = nil | |
| if system("command -v icuinfo > /dev/null") | |
| icuinfo = `icuinfo -v` | |
| begin | |
| doc = XML.parse(icuinfo) | |
| if params = doc.first_element_child | |
| if params.name == "icuSystemParams" # ICU >= 49.0 | |
| params.children.select(&.element?).each do |param| | |
| if param.name == "param" && param["name"]? == "version" | |
| version = param.content.strip | |
| break | |
| end | |
| end | |
| elsif params.name == "ICUINFO" # ICU < 49.0 | |
| if v = params.content.match(/Compiled-Version\s*:\s*([0-9\.]+)/) | |
| version = v[1] | |
| end | |
| end | |
| end | |
| rescue XML::Error | |
| end | |
| else | |
| STDERR.puts %(WARNING: cannot find the "icuinfo" tool in PATH) | |
| {% if flag?(:darwin) %} | |
| STDERR.puts %(\t(on OSX, please check that you've run "brew link icu4c")) | |
| {% end %} | |
| end | |
| if !version && system("command -v pkg-config > /dev/null") | |
| version = `pkg-config --modversion #{PKGNAME}`.strip | |
| end | |
| abort("cannot find ICU version", 3) if !version || version.empty? | |
| version | |
| end | |
| def icu_sem_version : String | |
| # convert ICU version to semantic versioning | |
| version = icu_version() | |
| v = version.split(".") | |
| if v.size == 3 | |
| version | |
| elsif v.size > 3 | |
| v[0..2].join(".") | |
| else | |
| 3.times.map { |i| v[i]? || "0" }.join(".") | |
| end | |
| end | |
| def icu_possible_suffixes(version : String) : Array(String) | |
| v = version.split(".") | |
| [ | |
| "", | |
| "_#{version}", | |
| "_#{v[0]}", | |
| "_#{v[0]}#{v[1]}", | |
| "_#{v[0]}_#{v[1]}", | |
| "_#{v[0][0]}_#{v[0][1]? || v[1][0]}", | |
| ].uniq | |
| end | |
| def icu_so_symbols_suffix | |
| suffixes = icu_possible_suffixes(icu_version()) | |
| handle = LibC.dlopen(SOFILE, LibC::RTLD_LAZY) | |
| abort("cannot load the #{SOFILE} file", 1) if handle.null? | |
| begin | |
| suffixes.each do |suffix| | |
| LibC.dlsym(handle, "#{TESTFUNC}#{suffix}") | |
| return suffix if LibC.dlerror.null? | |
| end | |
| abort("cannot find so symbols suffix", 2) | |
| ensure | |
| LibC.dlclose(handle) | |
| end | |
| end | |
| case ARGV[0]? | |
| when "--version" | |
| puts icu_version() | |
| when "--sem-version" | |
| puts icu_sem_version() | |
| when "--so-symbols-suffix" | |
| puts icu_so_symbols_suffix() | |
| end |
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| require "spec" | |
| require "./icu_info" | |
| describe "icu_version" do | |
| it "returns the version of the ICU lib" do | |
| icu_version().should match(/^[0-9][0-9\.]*$/) | |
| end | |
| end | |
| describe "icu_sem_version" do | |
| it "returns the version of the ICU lib in semantic versioning format" do | |
| icu_sem_version().should match(/^[0-9]+\.[0-9]+\.[0-9]+$/) | |
| end | |
| end | |
| describe "icu_so_symbols_suffix" do | |
| it "returns the version suffix added to symbols in so files of the ICU lib" do | |
| icu_so_symbols_suffix().should match(/^[0-9_]*$/) | |
| end | |
| end |
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