New linter for stdio tags.

planemo_ext/galaxy/tools/linters/stdio.py

@@ -0,0 +1,56 @@
+
+
+def lint_stdio(tool_xml, lint_ctx):
+    stdios = tool_xml.findall("./stdio")
+    if not stdios:
+        lint_ctx.info("No stdio definition found, tool will determines error from stderr.")
+        return
+
+    if len(stdios) > 1:
+        lint_ctx.error("More than one stdio tag found, behavior undefined.")
+        return
+
+    stdio = stdios[0]
+    for child in list(stdio):
+        if child.tag == "regex":
+            _lint_regex(child, lint_ctx)
+        elif child.tag == "exit_code":
+            _lint_exit_code(child, lint_ctx)
+        else:
+            message = "Unknown stdio child tag discovered [%s]. "
+            message += "Valid options are exit_code and regex."
+            lint_ctx.warn(message % child.tag)
+
+
+def _lint_exit_code(child, lint_ctx):
+    for key, value in child.attrib.iteritems():
+        if key == "range":
+            # TODO: validate
+            pass
+        elif key == "level":
+            _lint_level(value, lint_ctx)
+        elif key == "description":
+            pass
+        else:
+            lint_ctx.warn("Unknown attribute [%s] encountered on exit_code tag." % key)
+
+
+def _lint_regex(child, lint_ctx):
+    for key, value in child.attrib.iteritems():
+        if key == "source":
+            if value not in ["stderr", "stdout", "both"]:
+                lint_ctx.error("Unknown error code level encountered [%s]" % value)
+        elif key == "level":
+            _lint_level(value, lint_ctx)
+        elif key == "match":
+            # TODO: validate
+            pass
+        elif key == "description":
+            pass
+        else:
+            lint_ctx.warn("Unknown attribute [%s] encountered on regex tag." % key)
+
+
+def _lint_level(level_value, lint_ctx):
+    if level_value not in ["warning", "fatal", "log"]:
+        lint_ctx.error("Unknown error code level encountered [%s]" % level_value)