implement support for 'eb --show-ec'

easybuild/main.py

@@ -56,7 +56,7 @@
 from easybuild.tools.config import find_last_log, get_repository, get_repositorypath, build_option
 from easybuild.tools.containers.common import containerize
 from easybuild.tools.docs import list_software
-from easybuild.tools.filetools import adjust_permissions, cleanup, write_file
+from easybuild.tools.filetools import adjust_permissions, cleanup, read_file, write_file
 from easybuild.tools.github import check_github, close_pr, new_branch_github, find_easybuild_easyconfig
 from easybuild.tools.github import install_github_token, list_prs, new_pr, new_pr_from_branch, merge_pr
 from easybuild.tools.github import sync_branch_with_develop, sync_pr_with_develop, update_branch, update_pr
@@ -302,8 +302,14 @@ def main(args=None, logfile=None, do_build=None, testing=False, modtool=None):
     # determine paths to easyconfigs
     determined_paths = det_easyconfig_paths(categorized_paths['easyconfigs'])
 
-    if options.fix_deprecated_easyconfigs:
-        fix_deprecated_easyconfigs(determined_paths)
+    if options.fix_deprecated_easyconfigs or options.show_ec:
+        if options.fix_deprecated_easyconfigs:
+            fix_deprecated_easyconfigs(determined_paths)
+        elif options.show_ec:
+            for path in determined_paths:
+                print_msg("Contents of %s:" % path)
+                print_msg(read_file(path), prefix=False)
+
         clean_exit(logfile, eb_tmpdir, testing)
 
     if determined_paths:

easybuild/tools/options.py

@@ -565,6 +565,7 @@ def informative_options(self):
             'show-default-configfiles': ("Show list of default config files", None, 'store_true', False),
             'show-default-moduleclasses': ("Show default module classes with description",
                                            None, 'store_true', False),
+            'show-ec': ("Show contents of specified easyconfig(s)", None, 'store_true', False),
             'show-full-config': ("Show current EasyBuild configuration (all settings)", None, 'store_true', False),
             'show-system-info': ("Show system information relevant to EasyBuild", None, 'store_true', False),
             'terse': ("Terse output (machine-readable)", None, 'store_true', False),

test/framework/options.py

@@ -799,6 +799,35 @@ def test_search_archived(self):
         ])
         self.assertEqual(txt, expected)
 
+    def test_show_ec(self):
+        """Test 'eb --show-ec'."""
+
+        args = [
+            '--show-ec',
+            'toy-0.0.eb',
+            'gzip-1.6-GCC-4.9.2.eb',
+        ]
+        self.mock_stderr(True)
+        self.mock_stdout(True)
+        self.eb_main(args)
+        stderr, stdout = self.get_stderr(), self.get_stdout()
+        self.mock_stderr(False)
+        self.mock_stdout(False)
+
+        self.assertFalse(stderr)
+        patterns = [
+            r"^== Contents of .*/test/framework/easyconfigs/test_ecs/t/toy/toy-0.0.eb:",
+            r"^name = 'toy'",
+            r"^toolchain = SYSTEM",
+            r"^sanity_check_paths = {\n    'files': \[\('bin/yot', 'bin/toy'\)\],",
+            r"^== Contents of .*/test/framework/easyconfigs/test_ecs/g/gzip/gzip-1.6-GCC-4.9.2.eb:",
+            r"^easyblock = 'ConfigureMake'\n\nname = 'gzip'",
+            r"^toolchain = {'name': 'GCC', 'version': '4.9.2'}",
+        ]
+        for pattern in patterns:
+            regex = re.compile(pattern, re.M)
+            self.assertTrue(regex.search(stdout), "Pattern '%s' found in: %s" % (regex.pattern, stdout))
+
     def test_dry_run(self):
         """Test dry run (long format)."""
         fd, dummylogfn = tempfile.mkstemp(prefix='easybuild-dummy', suffix='.log')