From e6f3ba4a683d5720408deb8e3df2c3fecf1ff367 Mon Sep 17 00:00:00 2001
From: Tom Smeding <tom.smeding@gmail.com>
Date: Fri, 10 Aug 2018 23:39:23 +0200
Subject: Initial

---
 pacmd.py | 146 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 146 insertions(+)
 create mode 100644 pacmd.py

(limited to 'pacmd.py')

diff --git a/pacmd.py b/pacmd.py
new file mode 100644
index 0000000..e9e019e
--- /dev/null
+++ b/pacmd.py
@@ -0,0 +1,146 @@
+import subprocess, re
+from collections import namedtuple
+
+class PacmdSection:
+    def __init__(self, name, items):
+        self.name = name  # string
+        self.items = items  # [PacmdItem]
+
+class PacmdItem:
+    def __init__(self, index, children):
+        self.index = index  # int
+        self.children = children  # {key: PacmdNode}
+
+class PacmdNode:
+    def __init__(self, value, children):
+        self.value = value  # None | string | [string]
+        self.children = children  # {key: PacmdNode}
+
+class Pacmd:
+    def __init__(self, full_output):
+        lines = full_output.decode("utf-8").split("\n")
+        self.infos = []  # [string]
+        self.sections = []  # [PacmdSection]
+
+        currsect = None
+        curritem = None
+        currpath = []
+
+        def close_curritem():
+            nonlocal curritem, currsect, currpath
+            if curritem:
+                currsect.items.append(curritem)
+                curritem = None
+                currpath = []
+
+        def close_currsect():
+            nonlocal self, currsect
+            if currsect:
+                close_curritem()
+                self.sections.append(currsect)
+
+        def q_is_key_value(ln):
+            return ln.find("=") != -1 or ln.find(": ") != -1
+
+        def q_get_key_value(ln):
+            if ln.find("=") != -1:
+                m = re.search(r"^\s*([^=]*?)\s*=\s*(.*)$", ln)
+            else:
+                m = re.search(r"^\s*([^:]*):\s*(.*)$", ln)
+            return m.group(1), m.group(2)
+
+        for line in lines:
+            line = line.rstrip()
+            if len(line) == 0:
+                continue
+
+            line = line.replace("\t", "        ")
+            m = re.match(r"^( *(\* )?)([^ ].*)", line)
+            is_default = m.group(2) is not None  # TODO use is_default
+            indent = len(m.group(1))
+            line = m.group(3)
+
+            #  print(currpath)
+            #  print(indent, line)
+
+            if indent == 0:
+                if line[0].isdigit():
+                    close_currsect()
+
+                    name = re.search(r" ([^ ]*)\(s\)", line).group(1)
+                    currsect = PacmdSection(name, [])
+                else:
+                    self.infos.append(line)
+
+            elif indent == 4:
+                close_curritem()
+
+                index = re.search(r"index: ([0-9]*)$", line).group(1)
+                curritem = PacmdItem(int(index), {})
+
+            elif indent >= 8:
+                assert curritem != None
+
+                is_aligned = indent % 8 == 0
+                indent_depth = (indent + 7) // 8 - 1
+
+                if is_aligned and indent_depth < len(currpath):
+                    currpath = currpath[:indent_depth]
+
+                parentval, thisval = None, curritem
+                for k in currpath:
+                    parentval, thisval = thisval, thisval.children[k]
+
+                if q_is_key_value(line):
+                    key, value = q_get_key_value(line)
+                    thisval.children[key] = PacmdNode(value, {})
+                    currpath.append(key)
+
+                elif re.search(r":$", line) is not None:
+                    key = line[:-1]
+                    thisval.children[key] = PacmdNode(None, {})
+                    currpath.append(key)
+
+                elif indent_depth >= len(currpath):
+                    if type(thisval.value) != list:
+                        thisval.value = [thisval.value]
+                    thisval.value.append(line)
+
+                else:
+                    print("line = " + line)
+                    assert False
+
+            else:
+                print("indent = " + str(indent))
+                assert False
+
+        close_currsect()
+
+def pacmd(*args):
+    return Pacmd(subprocess.check_output(["pacmd"] + list(args)))
+
+def list_all():
+    return pacmd("list")
+
+def list_sinks():
+    return pacmd("list-sinks")
+
+def list_sink_inputs():
+    return pacmd("list-sink-inputs")
+
+
+def _make_indent(n):
+    return "    " * n
+
+def dump_section(sect):
+    print("Section " + sect.name + ":")
+    for item in sect.items:
+        print(_make_indent(1) + "Item " + str(item.index) + ":")
+        for key, node in item.children.items():
+            dump_node(node, key, 2);
+
+def dump_node(node, key, indent):
+    print(_make_indent(indent) + key + ":" +
+                ("" if node.value is None else " " + str(node.value)))
+    for k2, n2 in node.children.items():
+        dump_node(n2, k2, indent + 1)
-- 
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