build: i18n: add icu config options

Make "--with-intl=none" the default and add "intl-none" option to
vcbuild.bat.

If icu data is missing print a warning unless either --download=all or
--download=icu is set. If set then automatically download, verify (MD5)
and unpack the ICU data if not already available.

There's a "list" of URLs being used, but right now only the first is
picked up. The logic works something like this:

* If there is no directory deps/icu,
  * If no zip file (currently icu4c-54_1-src.zip),
    * Download zip file (icu-project.org -> sf.net)
  * Verify the MD5 sum of the zipfile
    * If bad, print error and exit
  * Unpack the zipfile into deps/icu
* If deps/icu now exists, use it, else fail with help text

Add the configuration option "--with-icu-source=..."

Usage:
  * --with-icu-source=/path/to/my/other/icu
  * --with-icu-source=/path/to/icu54.zip
  * --with-icu-source=/path/to/icu54.tgz
  * --with-icu-source=http://example.com/icu54.tar.bz2

Add the configuration option "--with-icu-locals=...".  Allows choosing
which locales are used in the "small-icu" case.

Example:
    configure --with-intl=small-icu --with-icu-locales=tlh,grc,nl

(Also note that as of this writing, neither Klingon nor Ancient Greek
are in upstream CLDR data. Serving suggestion only.)

Don't use hard coded ../../out paths on windows. This was suggested by
@misterdjules as it causes test failures.  With this fix, "out" is no
longer created on windows and the following can run properly:

    python tools/test.py simple

Reduce space by about 1MB with ICU 54 (over without this patch). Also
trims a few other source files, but only conditional on the exact ICU
version used. This is to future-proof - a file that is unneeded now may
be needed in future ICUs.

Also:
  * Update distclean to remove icu related files
  * Refactor some code into tools/configure.d/nodedownload.py
  * Update docs
  * Add test

PR-URL: https://github.com/joyent/node/pull/8719
Fixes: https://github.com/joyent/node/issues/7676#issuecomment-64704230
[trev.norris@gmail.com small change to test's whitespace and logic]
Signed-off-by: Trevor Norris <trev.norris@gmail.com>

1 files changed, 13 insertions, 0 deletions

diff --git a/tools/icu/icutrim.py b/tools/icu/icutrim.py
index 7f0fb3752e..517bf39bad 100755
--- a/tools/icu/icutrim.py
+++ b/tools/icu/icutrim.py
@@ -65,6 +65,12 @@ parser.add_option("-v","--verbose",
                     action="count",
                     default=0)
 
+parser.add_option('-L',"--locales",
+                  action="store",
+                  dest="locales",
+                  help="sets the 'locales.only' variable",
+                  default=None)
+
 parser.add_option('-e', '--endian', action='store', dest='endian', help='endian, big, little or host, your default is "%s".' % endian, default=endian, metavar='endianness')
 
 (options, args) = parser.parse_args()
@@ -147,6 +153,13 @@ fi= open(options.filterfile, "rb")
 config=json.load(fi)
 fi.close()
 
+if (options.locales):
+  if not config.has_key("variables"):
+    config["variables"] = {}
+  if not config["variables"].has_key("locales"):
+    config["variables"]["locales"] = {}
+  config["variables"]["locales"]["only"] = options.locales.split(',')
+
 if (options.verbose > 6):
     print config