Merge branch 'develop' for several bug fixes

gtools-0.6.16 (2017-09-13)

* Improves the issues raised by #7
  Now the commands only fail if Stata hits the `matsize` limit (internally,
  the plugin no longer uses the `subinstr` hack to go from locals to mata
  string matrices and uses `tokens` instead, which is more appropriate;
  further, the plugin tries to set matsize to at least the number of variables
  and gives a verbose error if it fails).
* No longer crashes on Linux systems with older glibc versions.
* Fixes #14
* Should fix #12
* Fixes #9
* Fixed #8
  `gegen` is callable via `by:`; it also gives the stat for the
  overall group if called without a `by`.

README.md

@@ -11,7 +11,7 @@ _Gtools_ is a Stata package that provides a fast implementation of
 common group commands like collapse and egen using C plugins for a
 massive speed improvement.
 
-`version 0.6.10 27Jul2017`
+`version 0.6.16 13Sep2017`
 Builds: Linux [![Travis Build Status](https://travis-ci.org/mcaceresb/stata-gtools.svg?branch=master)](https://travis-ci.org/mcaceresb/stata-gtools),
 Windows (Cygwin) [![Appveyor Build status](https://ci.appveyor.com/api/projects/status/2bh1q9bulx3pl81p/branch/master?svg=true)](https://ci.appveyor.com/project/mcaceresb/stata-gtools)
 
@@ -427,8 +427,8 @@ devised by Bob Jenkins, which is a 128-bit hash. Stata caps observations
 at 20 billion or so, meaning a 128-bit hash collision is _de facto_ impossible.
 Nevertheless, the function does check for hash collisions and will fall back
 on `collapse` and `egen` when it encounters a collision. An internal
-mechanism for resolving potential collisions is in the works. See (issue
-2)[https://github.com/mcaceresb/stata-gtools/issues/2] for a discussion.
+mechanism for resolving potential collisions is in the works. See [issue
+2](https://github.com/mcaceresb/stata-gtools/issues/2) for a discussion.
 
 ### Why use platform-dependent plugins?
 

build.py

@@ -10,12 +10,34 @@
 #          puts a .zip file in ./releases)
 
 from os import makedirs, path, linesep, chdir, system, remove, rename
-from shutil import copy2, which, rmtree
+from shutil import copy2, rmtree
 from sys import platform
 from tempfile import gettempdir
 from zipfile import ZipFile
 from re import search
 
+try:
+    from shutil import which
+except:
+    def which(program):
+        import os
+
+        def is_exe(fpath):
+            return path.isfile(fpath) and os.access(fpath, os.X_OK)
+
+        fpath, fname = path.split(program)
+        if fpath:
+            if is_exe(program):
+                return program
+        else:
+            for epath in os.environ["PATH"].split(os.pathsep):
+                epath = path.strip('"')
+                exe_file = path.join(epath, program)
+                if is_exe(exe_file):
+                    return exe_file
+
+        return None
+
 import argparse
 parser = argparse.ArgumentParser()
 parser.add_argument('--stata',
@@ -54,6 +76,7 @@
                     required = False)
 args = vars(parser.parse_args())
 
+
 def makedirs_safe(directory):
     try:
         makedirs(directory)
@@ -62,6 +85,7 @@ def makedirs_safe(directory):
         if not path.isdir(directory):
             raise
 
+
 gtools_ssc = [
     "gcollapse.ado",
     "gcollapse.sthlp",
@@ -193,11 +217,13 @@ def makedirs_safe(directory):
            "env_set_windows.plugin",
            "env_set_macosx.plugin",
            "gtools_unix.plugin",
+           "gtools_unix_legacy.plugin",
            "gtools_unix_multi.plugin",
+           "gtools_unix_multi_legacy.plugin",
            "spookyhash.dll",
            "gtools_windows.plugin",
            "gtools_macosx.plugin"]
-plugbak = plugins.copy()
+plugbak = plugins[:]
 for plug in plugbak:
     if not path.isfile(path.join("build", plug)):
         alt = path.join("lib", "plugin", plug)

build/changelog.md

@@ -1,6 +1,41 @@
 Change Log
 ==========
 
+## gtools-0.6.15 (2017-09-12); fixes #14, #9
+
+### Bug fixes
+
+* Fixes https://github.com/mcaceresb/stata-gtools/issues/14
+* Fixes https://github.com/mcaceresb/stata-gtools/issues/9
+  (prior fixes were erratic; this should work)
+
+## gtools-0.6.14 (2017-09-12)
+
+### Bug fixes
+
+* No longer crashes on Linux systems with older glibc versions.
+
+## gtools-0.6.13 (2017-09-12)
+
+### Bug fixes
+
+* Should fix https://github.com/mcaceresb/stata-gtools/issues/9
+  Added legacy plugin using older `libgomp.so` library.
+
+## gtools-0.6.12 (2017-09-11)
+
+### Bug fixes
+
+* Should fix https://github.com/mcaceresb/stata-gtools/issues/12
+
+## gtools-0.6.11 (2017-08-17)
+
+### Bug fixes
+
+* Fixed https://github.com/mcaceresb/stata-gtools/issues/8 so
+  `gegen` is callable via `by:`; it also gives the stat for the
+  overall group if called without a `by`.
+
 ## gtools-0.6.10 (2017-06-27)
 
 ### Bug fixes