From fa11434620967eb9e468b9a8dbcb9d529dad97a8 Mon Sep 17 00:00:00 2001
From: Michael Buesch <m@bues.ch>
Date: Sat, 8 Feb 2020 19:12:04 +0100
Subject: [PATCH] symtab: Add micropython support

Signed-off-by: Michael Buesch <m@bues.ch>
---
 awlsim-symtab        |  8 ++++++--
 libs/tiny_csv/csv.py | 45 ++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 51 insertions(+), 2 deletions(-)

diff --git a/awlsim-symtab b/awlsim-symtab
index 3279b4184..a9e1ec719 100755
--- a/awlsim-symtab
+++ b/awlsim-symtab
@@ -93,7 +93,9 @@ def main():
 
 	try:
 		if opt_infile == "-":
-			if isPy2Compat:
+			if isMicroPython:
+				inDataBytes = sys.stdin.read().encode(SymTabSource.COMPAT_ENCODING)
+			elif isPy2Compat:
 				inDataBytes = sys.stdin.read()
 			else:
 				inDataBytes = sys.stdin.buffer.read()
@@ -133,7 +135,9 @@ def main():
 				"%s" % (encoding, str(e)))
 
 		if opt_outfile == "-":
-			if isPy2Compat:
+			if isMicroPython:
+				sys.stdout.write(outDataBytes.decode(SymTabSource.COMPAT_ENCODING))
+			elif isPy2Compat:
 				sys.stdout.write(outDataBytes)
 				sys.stdout.flush()
 			else:
diff --git a/libs/tiny_csv/csv.py b/libs/tiny_csv/csv.py
index 682f48b05..6e27ccffd 100644
--- a/libs/tiny_csv/csv.py
+++ b/libs/tiny_csv/csv.py
@@ -5,3 +5,48 @@ class Dialect(object):
 
 def register_dialect(name, d):
 	pass
+
+class reader(object):
+	def __init__(self, csvfile, dialect="excel", **fmtparams):
+		self.i = 0
+		self.lines = []
+		for line in csvfile:
+			elems = []
+			elem = []
+			inQuote = False
+			skip = 0
+			for i, c in enumerate(line):
+				if skip > 0:
+					skip -= 1
+					continue
+				if inQuote:
+					if c == '"' and not line.startswith('""', i):
+						inQuote = False
+					elif c == '"' and line.startswith('""', i):
+						elem.append(c)
+						skip = 1
+					else:
+						elem.append(c)
+				else:
+					if c == '"':
+						inQuote = True
+					elif c == ';':
+						elems.append("".join(elem))
+						elem = []
+					else:
+						elem.append(c)
+			if line:
+				elems.append("".join(elem))
+			self.lines.append(elems)
+
+	def __iter__(self):
+		self.i = 0
+		return self
+
+	def __next__(self):
+		try:
+			line = self.lines[self.i]
+			self.i += 1
+			return line
+		except IndexError:
+			raise StopIteration