1f7093d334eb20de7420307c9225f4b6f0d8eb6a
1 /**
2 * oconfig - src/oconfig.c
3 * Copyright (C) 2006,2007 Florian octo Forster <octo at verplant.org>
4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License as published by the
7 * Free Software Foundation; only version 2 of the License is applicable.
8 *
9 * This program is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
12 * more details.
13 *
14 * You should have received a copy of the GNU General Public License along with
15 * this program; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
17 */
19 #include <stdlib.h>
20 #include <stdio.h>
21 #include <string.h>
22 #include <assert.h>
23 #include <errno.h>
25 #include "oconfig.h"
27 extern FILE *yyin;
28 int yyparse (void);
30 oconfig_item_t *ci_root;
31 const char *c_file;
33 static void yyset_in (FILE *fd)
34 {
35 yyin = fd;
36 } /* void yyset_in */
38 oconfig_item_t *oconfig_parse_fh (FILE *fh)
39 {
40 int status;
41 oconfig_item_t *ret;
43 char file[10];
45 yyset_in (fh);
47 if (NULL == c_file) {
48 int status;
50 status = snprintf (file, sizeof (file), "<fd#%d>", fileno (fh));
52 if ((status < 0) || (status >= sizeof (file))) {
53 c_file = "<unknown>";
54 }
55 else {
56 file[sizeof (file) - 1] = '\0';
57 c_file = file;
58 }
59 }
61 status = yyparse ();
62 if (status != 0)
63 {
64 fprintf (stderr, "yyparse returned error #%i\n", status);
65 c_file = NULL;
66 return (NULL);
67 }
69 c_file = NULL;
71 ret = ci_root;
72 ci_root = NULL;
73 yyset_in ((FILE *) 0);
75 return (ret);
76 } /* oconfig_item_t *oconfig_parse_fh */
78 oconfig_item_t *oconfig_parse_file (const char *file)
79 {
80 FILE *fh;
81 oconfig_item_t *ret;
83 c_file = file;
85 fh = fopen (file, "r");
86 if (fh == NULL)
87 {
88 fprintf (stderr, "fopen (%s) failed: %s\n", file, strerror (errno));
89 return (NULL);
90 }
92 ret = oconfig_parse_fh (fh);
93 fclose (fh);
95 c_file = NULL;
97 return (ret);
98 } /* oconfig_item_t *oconfig_parse_file */
100 oconfig_item_t *oconfig_clone (const oconfig_item_t *ci_orig)
101 {
102 oconfig_item_t *ci_copy;
104 ci_copy = (oconfig_item_t *) malloc (sizeof (*ci_copy));
105 if (ci_copy == NULL)
106 {
107 fprintf (stderr, "malloc failed.\n");
108 return (NULL);
109 }
110 memset (ci_copy, 0, sizeof (*ci_copy));
111 ci_copy->values = NULL;
112 ci_copy->parent = NULL;
113 ci_copy->children = NULL;
115 ci_copy->key = strdup (ci_orig->key);
116 if (ci_copy->key == NULL)
117 {
118 fprintf (stderr, "strdup failed.\n");
119 free (ci_copy);
120 return (NULL);
121 }
123 if (ci_orig->values_num > 0) /* {{{ */
124 {
125 int i;
127 ci_copy->values = (oconfig_value_t *) calloc (ci_orig->values_num,
128 sizeof (*ci_copy->values));
129 if (ci_copy->values == NULL)
130 {
131 fprintf (stderr, "calloc failed.\n");
132 free (ci_copy->key);
133 free (ci_copy);
134 return (NULL);
135 }
136 ci_copy->values_num = ci_orig->values_num;
138 for (i = 0; i < ci_copy->values_num; i++)
139 {
140 ci_copy->values[i].type = ci_orig->values[i].type;
141 if (ci_copy->values[i].type == OCONFIG_TYPE_STRING)
142 {
143 ci_copy->values[i].value.string
144 = strdup (ci_orig->values[i].value.string);
145 if (ci_copy->values[i].value.string == NULL)
146 {
147 fprintf (stderr, "strdup failed.\n");
148 oconfig_free (ci_copy);
149 return (NULL);
150 }
151 }
152 else /* ci_copy->values[i].type != OCONFIG_TYPE_STRING) */
153 {
154 ci_copy->values[i].value = ci_orig->values[i].value;
155 }
156 }
157 } /* }}} if (ci_orig->values_num > 0) */
159 if (ci_orig->children_num > 0) /* {{{ */
160 {
161 int i;
163 ci_copy->children = (oconfig_item_t *) calloc (ci_orig->children_num,
164 sizeof (*ci_copy->children));
165 if (ci_copy->children == NULL)
166 {
167 fprintf (stderr, "calloc failed.\n");
168 oconfig_free (ci_copy);
169 return (NULL);
170 }
171 ci_copy->children_num = ci_orig->children_num;
173 for (i = 0; i < ci_copy->children_num; i++)
174 {
175 oconfig_item_t *child;
177 child = oconfig_clone (ci_orig->children + i);
178 if (child == NULL)
179 {
180 oconfig_free (ci_copy);
181 return (NULL);
182 }
183 child->parent = ci_copy;
184 ci_copy->children[i] = *child;
185 free (child);
186 } /* for (i = 0; i < ci_copy->children_num; i++) */
187 } /* }}} if (ci_orig->children_num > 0) */
189 return (ci_copy);
190 } /* oconfig_item_t *oconfig_clone */
192 void oconfig_free (oconfig_item_t *ci)
193 {
194 int i;
196 if (ci == NULL)
197 return;
199 if (ci->key != NULL)
200 free (ci->key);
202 for (i = 0; i < ci->values_num; i++)
203 if ((ci->values[i].type == OCONFIG_TYPE_STRING)
204 && (NULL != ci->values[i].value.string))
205 free (ci->values[i].value.string);
207 if (ci->values != NULL)
208 free (ci->values);
210 for (i = 0; i < ci->children_num; i++)
211 oconfig_free (ci->children + i);
213 if (ci->children != NULL)
214 free (ci->children);
215 }
217 /*
218 * vim:shiftwidth=2:tabstop=8:softtabstop=2:fdm=marker
219 */