Merge commit 'db4fa08d4da3cc840e6f97e6869a877f2b4c9474' as 'waflib'

1 files changed, 139 insertions, 0 deletions

diff --git a/waflib/extras/run_do_script.py b/waflib/extras/run_do_script.py
new file mode 100644
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+++ b/waflib/extras/run_do_script.py
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+#!/usr/bin/env python
+# encoding: utf-8
+# Hans-Martin von Gaudecker, 2012
+
+"""
+Run a Stata do-script in the directory specified by **ctx.bldnode**. The
+first and only argument will be the name of the do-script (no extension),
+which can be accessed inside the do-script by the local macro `1'. Useful
+for keeping a log file.
+
+The tool uses the log file that is automatically kept by Stata only 
+for error-catching purposes, it will be destroyed if the task finished
+without error. In case of an error in **some_script.do**, you can inspect
+it as **some_script.log** in the **ctx.bldnode** directory.
+
+Note that Stata will not return an error code if it exits abnormally -- 
+catching errors relies on parsing the log file mentioned before. Should
+the parser behave incorrectly please send an email to hmgaudecker [at] gmail.
+
+**WARNING**
+
+    The tool will not work if multiple do-scripts of the same name---but in
+    different directories---are run at the same time! Avoid this situation.
+
+Usage::
+
+    ctx(features='run_do_script', 
+        source='some_script.do',
+        target=['some_table.tex', 'some_figure.eps'],
+        deps='some_data.csv')
+"""
+
+
+import os, re, sys
+from waflib import Task, TaskGen, Logs
+
+if sys.platform == 'darwin':
+	STATA_COMMANDS = ['Stata64MP', 'StataMP',
+								'Stata64SE', 'StataSE', 
+								'Stata64', 'Stata']
+	STATAFLAGS = '-e -q do'
+	STATAENCODING = 'MacRoman'
+elif sys.platform.startswith('linux'):
+	STATA_COMMANDS = ['stata-mp', 'stata-se', 'stata']
+	STATAFLAGS = '-b -q do'
+	# Not sure whether this is correct...
+	STATAENCODING = 'Latin-1'
+elif sys.platform.lower().startswith('win'):
+	STATA_COMMANDS = ['StataMP-64', 'StataMP-ia',
+								'StataMP', 'StataSE-64',
+								'StataSE-ia', 'StataSE',
+								'Stata-64', 'Stata-ia',
+								'Stata.e', 'WMPSTATA',
+								'WSESTATA', 'WSTATA']
+	STATAFLAGS = '/e do'
+	STATAENCODING = 'Latin-1'
+else:
+	raise Exception("Unknown sys.platform: %s " % sys.platform)
+
+def configure(ctx):
+	ctx.find_program(STATA_COMMANDS, var='STATACMD', errmsg="""\n
+No Stata executable found!\n\n
+If Stata is needed:\n
+	1) Check the settings of your system path.
+	2) Note we are looking for Stata executables called: %s
+	   If yours has a different name, please report to hmgaudecker [at] gmail\n
+Else:\n
+	Do not load the 'run_do_script' tool in the main wscript.\n\n""" % STATA_COMMANDS)
+	ctx.env.STATAFLAGS = STATAFLAGS
+	ctx.env.STATAENCODING = STATAENCODING
+
+class run_do_script_base(Task.Task):
+	"""Run a Stata do-script from the bldnode directory."""
+	run_str = '"${STATACMD}" ${STATAFLAGS} "${SRC[0].abspath()}" "${DOFILETRUNK}"'
+	shell = True
+
+class run_do_script(run_do_script_base):
+	"""Use the log file automatically kept by Stata for error-catching.
+	Erase it if the task finished without error. If not, it will show 
+	up as do_script.log in the bldnode directory.
+	"""
+	def run(self):
+		run_do_script_base.run(self)
+		ret, log_tail  = self.check_erase_log_file()
+		if ret:
+			Logs.error("""Running Stata on %r failed with code %r.\n\nCheck the log file %s, last 10 lines\n\n%s\n\n\n""",
+				self.inputs[0], ret, self.env.LOGFILEPATH, log_tail)
+		return ret
+
+	def check_erase_log_file(self):
+		"""Parse Stata's default log file and erase it if everything okay.
+
+		Parser is based on Brendan Halpin's shell script found here:
+			http://teaching.sociology.ul.ie/bhalpin/wordpress/?p=122
+		"""
+
+		if sys.version_info.major >= 3:
+			kwargs = {'file': self.env.LOGFILEPATH, 'mode': 'r', 'encoding': self.env.STATAENCODING}
+		else:
+			kwargs = {'name': self.env.LOGFILEPATH, 'mode': 'r'}
+		with open(**kwargs) as log:
+			log_tail = log.readlines()[-10:]
+			for line in log_tail:
+				error_found = re.match("r\(([0-9]+)\)", line)
+				if error_found:
+					return error_found.group(1), ''.join(log_tail)
+				else:
+					pass
+		# Only end up here if the parser did not identify an error.
+		os.remove(self.env.LOGFILEPATH)
+		return None, None
+
+
+@TaskGen.feature('run_do_script')
+@TaskGen.before_method('process_source')
+def apply_run_do_script(tg):
+	"""Task generator customising the options etc. to call Stata in batch
+	mode for running a do-script.
+	"""
+
+	# Convert sources and targets to nodes
+	src_node = tg.path.find_resource(tg.source)
+	tgt_nodes = [tg.path.find_or_declare(t) for t in tg.to_list(tg.target)]
+
+	tsk = tg.create_task('run_do_script', src=src_node, tgt=tgt_nodes)
+	tsk.env.DOFILETRUNK = os.path.splitext(src_node.name)[0]
+	tsk.env.LOGFILEPATH = os.path.join(tg.bld.bldnode.abspath(), '%s.log' % (tsk.env.DOFILETRUNK))
+
+	# dependencies (if the attribute 'deps' changes, trigger a recompilation)
+	for x in tg.to_list(getattr(tg, 'deps', [])):
+		node = tg.path.find_resource(x)
+		if not node:
+			tg.bld.fatal('Could not find dependency %r for running %r' % (x, src_node.abspath()))
+		tsk.dep_nodes.append(node)
+	Logs.debug('deps: found dependencies %r for running %r', tsk.dep_nodes, src_node.abspath())
+
+	# Bypass the execution of process_source by setting the source to an empty list
+	tg.source = []
+