[Yt-svn] yt: Of course I forgot to check in the .pyx file for libconfig.

[hg at spacepope.org]

hg Repository: yt
details:   yt/rev/2e98ba6d864b
changeset: 3695:2e98ba6d864b
user:      Matthew Turk <matthewturk at gmail.com>
date:
Fri Jan 28 14:27:50 2011 -0500
description:
Of course I forgot to check in the .pyx file for libconfig.

diffstat:

 yt/utilities/libconfig_wrapper.pyx |  137 +++++++++++++++++++++++++++++++++++++
 1 files changed, 137 insertions(+), 0 deletions(-)

diffs (141 lines):

diff -r 5a76ebe4f642 -r 2e98ba6d864b yt/utilities/libconfig_wrapper.pyx
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/yt/utilities/libconfig_wrapper.pyx	Fri Jan 28 14:27:50 2011 -0500
@@ -0,0 +1,137 @@
+"""
+libconfig (http://www.hyperrealm.com/libconfig/) wrapper in Cython.  Exposes a
+minimum of the API.
+
+Author: Matthew Turk <matthewturk at gmail.com>
+Affiliation: NSF / Columbia University
+Homepage: http://yt.enzotools.org/
+License:
+  Copyright (C) 2011 Matthew Turk.  All Rights Reserved.
+
+  This file is part of yt.
+
+  yt 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 3 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, see <http://www.gnu.org/licenses/>.
+"""
+
+from stdio cimport fopen, fclose, FILE
+
+cdef extern from "libconfig.h":
+    cdef struct config_t:
+        pass
+    cdef struct config_setting_t:
+        pass
+
+    enum: CONFIG_TRUE
+    enum: CONFIG_FALSE
+    enum: CONFIG_TYPE_INT
+    enum: CONFIG_TYPE_INT64
+    enum: CONFIG_TYPE_FLOAT
+    enum: CONFIG_TYPE_STRING
+    enum: CONFIG_TYPE_BOOL
+    enum: CONFIG_TYPE_ARRAY
+    enum: CONFIG_TYPE_LIST
+    enum: CONFIG_TYPE_GROUP
+
+    void config_init (config_t *config)
+    void config_destroy (config_t *config)
+    int config_read (config_t * config, FILE * stream)
+    int config_read_file (config_t * config, char * filename)
+    int config_read_string (config_t * config, char * str)
+    void config_write (config_t * config, FILE * stream)
+    int config_write_file (config_t * config, char * filename)
+
+    config_setting_t * config_lookup (config_t * config, char * path)
+    int config_lookup_int (config_t * config, char * path, int * value)
+    int config_lookup_int64 (config_t * config, char * path, long long * value)
+    int config_lookup_float (config_t * config, char * path, double * value)
+    int config_lookup_bool (config_t * config, char * path, int * value)
+    int config_lookup_string (config_t * config, char * path, char ** value)
+
+    int config_setting_get_int (config_setting_t * setting)
+    long long config_setting_get_int64 (config_setting_t * setting)
+    double config_setting_get_float (config_setting_t * setting)
+    int config_setting_get_bool (config_setting_t * setting)
+    char * config_setting_get_string (config_setting_t * setting)
+
+    int config_setting_type (config_setting_t * setting)
+
+    int config_setting_length (config_setting_t * setting)
+    config_setting_t * config_setting_get_elem (
+        config_setting_t * setting, unsigned int idx)
+
+cdef class libconfigSetting:
+    cdef config_setting_t *setting
+
+cdef class libconfigConfiguration:
+    cdef config_t cfg
+    def __cinit__(self):
+        config_init(&self.cfg)
+
+    def __dealloc__(self):
+        config_destroy(&self.cfg)
+
+    def read_file(self, char *fn):
+        config_read_file(&self.cfg, fn)
+
+    def read_string(self, char *s):
+        config_read_string(&self.cfg, s)
+
+    def __getitem__(self, key):
+        cdef config_setting_t *setting = config_lookup(&self.cfg, key)
+        ms = libconfigSetting()
+        ms.setting = setting
+        rv = self.get_setting(ms)
+        if rv == None: raise KeyError(key)
+        return rv
+
+    def get_setting(self, libconfigSetting ms):
+        cdef config_setting_t *setting = ms.setting
+        if setting == NULL:
+            return None
+        cdef int tt = config_setting_type(setting)
+        cdef int kv_int
+        cdef long long kv_int64
+        cdef double kv_float
+        cdef int kv_bool
+        cdef char* kv_string
+        cdef int nelem
+        cdef config_setting_t *sub_setting
+        if tt == CONFIG_TYPE_INT:
+            kv_int = config_setting_get_int(setting)
+            return kv_int
+        elif tt == CONFIG_TYPE_INT64:
+            kv_int64 = config_setting_get_int64(setting)
+            return kv_int64
+        elif tt == CONFIG_TYPE_FLOAT:
+            kv_float = config_setting_get_float(setting)
+            return kv_float
+        elif tt == CONFIG_TYPE_BOOL:
+            kv_bool = config_setting_get_bool(setting)
+            return kv_bool
+        elif tt == CONFIG_TYPE_STRING:
+            kv_string = config_setting_get_string(setting)
+            return kv_string
+        elif tt == CONFIG_TYPE_ARRAY or tt == CONFIG_TYPE_LIST:
+            nelem = config_setting_length(setting)
+            tr = []
+            for i in xrange(nelem):
+                sub_ms = libconfigSetting()
+                sub_setting = config_setting_get_elem(setting, i)
+                sub_ms.setting = sub_setting
+                tr.append(self.get_setting(sub_ms))
+            return tr
+        elif tt == CONFIG_TYPE_GROUP:
+            print "Sorry, can't return references to groups just now."
+            raise RuntimeError
+        return None