1 files changed, 189 insertions, 0 deletions
diff --git a/jack_rc.py b/jack_rc.py
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+### jack_rc: read/write config file, a module for
+### jack - extract audio from a CD and encode it using 3rd party software
+### Copyright (C) 1999-2004  Arne Zellentin <zarne@users.sf.net>
+
+### This program is free software; you can redistribute it and/or modify
+### it under the terms of the GNU General Public License as published by
+### the Free Software Foundation; either version 2 of the License, or
+### (at your option) any later version.
+
+### This program is distributed in the hope that it will be useful,
+### but WITHOUT ANY WARRANTY; without even the implied warranty of
+### MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+### GNU General Public License for more details.
+
+### You should have received a copy of the GNU General Public License
+### along with this program; if not, write to the Free Software
+### Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+import os
+import sys
+import string
+import types
+
+import jack_argv
+import jack_version
+
+from jack_globals import *
+
+# exported functions:
+# load
+# save
+
+def read(file):
+    read_rc = []
+
+    try:
+        f = open(file)
+    except:
+        return read_rc
+
+    lineno = 0
+    while 1:
+        x = f.readline()
+        if not x:
+            break
+        opt = val = com = None
+        lineno = lineno + 1
+
+        x = string.strip(x)
+        x = string.split(x, "#", 1)
+        if len(x) > 1:
+            opt, com = x
+        else:
+            opt = x[0]
+        if opt and com:
+            opt = string.strip(opt)
+        if opt:
+            x = string.split(opt, ":", 1)
+            if len(x) > 1:
+                opt, val = x
+            else:
+                opt = x[0]
+        else:
+            opt = None
+        read_rc.append([opt, val, com, lineno])
+    version = get_version(read_rc)
+    if version != jack_version.prog_rcversion:
+        warning("config file %s is of unknown version %s." % (file, `version`))
+    return read_rc
+
+def get_version(rc):
+    if not rc:
+        return None
+    if len(rc[0]) != 4:
+        return None
+    opt, val, com, lineno = rc[0]
+    if opt == None and val == None and lineno == 1:
+        vers = com.strip().split(":", 1)
+        if len(vers) != 2:
+            return None
+        if vers[0] != "jackrc-version":
+            return None
+        ver = int(vers[1])
+        return ver
+    else:
+        return None
+
+def load(cf, file):
+    rc = read(expand(file))
+    rc_cf = {}
+    for i in rc:
+        if i[0] != None:
+            if cf.has_key(i[0]):
+                ret, val = jack_argv.parse_option(cf, i[0:2], 0, i[0], None, origin="rcfile")
+                if ret != None:
+                    rc_cf[i[0]] = {'val': val}
+                else:
+                    warning(file + ":%s: " % i[3] + val)
+            else:
+                warning(file + ":%s: unknown option `%s'" % (i[3], i[0]))
+    return rc_cf
+
+def merge(old, new):
+    old = old[:]
+    new = new[:]
+    append = []
+    remove = []
+    old.reverse()
+    for i in range(len(new)):
+        found = 0
+        for j in range(len(old)):
+            if new[i][0] and new[i][0] == old[j][0]:
+                old[j][:2] = new[i][:2]
+                found = 1
+                break
+        if not found:
+            append.append(new[i][:2] + [None,])
+        else:
+            if new[i][2] == 'toggle':
+                remove.append(old[j])
+    for i in remove:
+        if i[2] != None:
+            x = old.index(i)
+            old[x] = [None, None, old[x][2]]
+        else:
+            old.remove(i)
+    old.reverse()
+    return old + append
+
+def write(file, rc, rcfile_exists = True):
+    f = open(file, "w")
+    if not rcfile_exists:
+        f.write("# jackrc-version:%d\n" % jack_version.prog_rcversion)
+
+    for i in rc:
+        if i[0]:
+            f.write(i[0])
+        if i[1] != None:
+            f.write(":" + i[1])
+        if i[2] != None:
+            if i[0] or i[1]:
+                f.write(" ")
+            f.write("#" + i[2])
+        f.write("\n")
+
+def write_yes(x):
+    if x:
+        return "yes"
+    else:
+        return "no"
+
+def convert(cf):
+    rc = []
+    for i in cf.keys():
+        if cf[i]['type'] == types.StringType:
+            rc.append([i, cf[i]['val'], None])
+        elif cf[i]['type'] == types.FloatType:
+            rc.append([i, `cf[i]['val']`, None])
+        elif cf[i]['type'] == types.IntType:
+            rc.append([i, `cf[i]['val']`, None])
+        elif cf[i]['type'] == 'toggle':
+            rc.append([i, write_yes(cf[i]['val']), 'toggle'])
+        elif cf[i]['type'] == types.ListType:
+            rc.append([i, `cf[i]['val']`, None])
+        else:
+            error("don't know how to handle " + `cf[i]['type']`)
+    return rc
+
+def save(file, cf):
+    file = expand(file)
+    rc_cf = {}
+    for i in cf.keys():
+        if cf[i].has_key('save') and not cf[i]['save']:
+            continue
+        opt = cf[i]
+        if opt['history'][-1][0] == "argv":
+            rc_cf[i] = opt
+    oldrc = read(file)
+    argvrc = convert(rc_cf)
+    newrc = merge(oldrc, argvrc)
+    rcfile_exists = os.path.exists(file)
+    try:
+        write(file + ".tmp", newrc, rcfile_exists)
+    except:
+        error("can't write config file")
+    if os.path.exists(file):
+        os.rename(file, file + "~")
+    os.rename(file + ".tmp", file)
+    return len(rc_cf)