From 2eec3194e0ec12e10ab3fa1ea437f0714eb9fb3e Mon Sep 17 00:00:00 2001
From: Mattias Andrée <maandree@operamail.com>
Date: Wed, 19 Mar 2014 01:40:58 +0100
Subject: allow comments on lines with meaning and fix spawn command parse so
 that brackets can be used
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Signed-off-by: Mattias Andrée <maandree@operamail.com>
---
 examples/textconf | 47 ++++++++++++++++++++++++++++++++++++++++-------
 1 file changed, 40 insertions(+), 7 deletions(-)

diff --git a/examples/textconf b/examples/textconf
index 07495b0..1e00c6b 100644
--- a/examples/textconf
+++ b/examples/textconf
@@ -44,9 +44,33 @@ with open(conf, 'r') as file:
 sections = {'blueshift' : []}
 section = []
 sections['blueshift'].append(section)
+def remove_comment(text, spawn_aware):
+    if (';' in text) or ('#' in text):
+        if not spawn_aware:
+            return text[:text.replace('#', ';').find(';')]
+        buf, cmd, stack = '', 0, 0
+        for c in buf:
+            if cmd > 0:
+                if c == '(':
+                    stack += 1
+                elif c == ')':
+                    stack -= 1
+                if cmd == 1:
+                    cmd = 2 if c == '(' else 0
+                elif (c == ')') and (stack == 0):
+                    cmd = 0
+            elif c == '$':
+                cmd = 1
+                stack = 0
+            elif (c == ';') or (c == '#'):
+                break
+            buf += c
+        return buf
+    return text
 for line in conf.split('\n'):
     line = line.strip()
-    if line.startswith('[') and line.endswith(']'):
+    if line.startswith('[') and remove_comment(line, False).rstrip().endswith(']'):
+        line = remove_comment(line, False).rstrip()
         section_name = line[1 : -1].strip().lower()
         if section_name not in sections:
             sections[section_name] = []
@@ -55,10 +79,14 @@ for line in conf.split('\n'):
     elif line.startswith(';') or line.startswith('#'):
         continue
     elif ('=' in line) or (':' in line):
-        eq = len(line) if '=' not in line else line.find('=')
-        cl = len(line) if ':' not in line else line.find(':')
-        eq = min(eq, cl)
-        section.append((line[:eq].strip().lower(), line[eq + 1:].strip()))
+        line = remove_comment(line, True)
+        if ('=' in line) or (':' in line):
+            eq = len(line) if '=' not in line else line.find('=')
+            cl = len(line) if ':' not in line else line.find(':')
+            eq = min(eq, cl)
+            section.append((line[:eq].strip().lower(), line[eq + 1:].strip()))
+        elif len(line.strip()) > 0:
+            sys.stderr.buffer.write(('Malformated line: %s\n' % line).encode('utf-8'))
     elif len(line.strip()) > 0:
         sys.stderr.buffer.write(('Malformated line: %s\n' % line).encode('utf-8'))
 sys.stderr.buffer.flush()
@@ -100,9 +128,13 @@ def parse_value(value):
         if (proc.returncode == 0) and (len(output) > 0):
             return output
         return None
-    words, buf, cmd = [], '', None
+    words, buf, cmd, stack = [], '', None, 0
     for c in value:
         if cmd is not None:
+            if c == '(':
+                stack += 1
+            elif c == ')':
+                stack -= 1
             if cmd == '':
                 if c == '(':
                     cmd += '('
@@ -111,7 +143,7 @@ def parse_value(value):
                     buf += '$'
             else:
                 cmd += c
-                if c == ')':
+                if (c == ')') and (stack == 0):
                     cmd = cmd[1 : -1]
                     cmd = spawn(cmd)
                     if cmd is not None:
@@ -123,6 +155,7 @@ def parse_value(value):
                 buf = ''
         elif c == '$':
             cmd = ''
+            stack = 0
         else:
             buf += c
     if not buf == '':
-- 
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