cb01a41268921f529d27494bf1453cdcaa79d1df
1 /**
2 * collection4 - utils_search.c
3 * Copyright (C) 2010 Florian octo Forster
4 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation; either
8 * version 2.1 of the License, or (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
14 *
15 * You should have received a copy of the GNU Lesser General Public
16 * License along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin Street, Fifth Floor,
18 * Boston, MA 02110-1301 USA
19 *
20 * Authors:
21 * Florian octo Forster <ff at octo.it>
22 **/
24 #include <stdlib.h>
25 #include <stdio.h>
26 #include <string.h>
27 #include <ctype.h>
29 #include "utils_search.h"
30 #include "utils_array.h"
32 #include <fcgiapp.h>
33 #include <fcgi_stdio.h>
35 struct search_info_s
36 {
37 char *host;
38 char *plugin;
39 char *plugin_instance;
40 char *type;
41 char *type_instance;
43 str_array_t *terms;
44 };
46 static char *read_quoted_string (const char **buffer) /* {{{ */
47 {
48 const char *ptr = *buffer;
49 char *ret;
50 size_t ret_len;
52 if (ptr[0] != '"')
53 return (NULL);
54 ptr++;
56 ret_len = 0;
57 while ((*ptr != '"') && (*ptr != 0))
58 {
59 ret_len++;
61 if (*ptr == '\\')
62 ptr += 2;
63 else
64 ptr++;
65 }
67 if ((ret_len < 1) || (*ptr != '"'))
68 return (NULL);
70 ret = malloc (ret_len + 1);
71 if (ret == NULL)
72 return (NULL);
74 ptr = *buffer + 1;
75 ret_len = 0;
76 while ((*ptr != '"') && (*ptr != 0))
77 {
78 if (*ptr == '"')
79 break;
81 if (*ptr == '\\')
82 ptr++;
84 ret[ret_len] = *ptr;
86 ptr++;
87 ret_len++;
88 }
90 /* terminate string */
91 ret[ret_len] = 0;
93 /* "ptr" points to the '"' sign, so advance one more */
94 ptr++;
95 *buffer = ptr;
97 return (ret);
98 } /* }}} char *read_quoted_string */
100 static char *read_unquoted_word (const char **buffer) /* {{{ */
101 {
102 const char *ptr = *buffer;
103 char *ret;
104 size_t ret_len;
106 ret_len = 0;
107 while (!isspace ((int) ptr[ret_len]) && (ptr[ret_len] != 0))
108 ret_len++;
110 if (ret_len < 1)
111 return (NULL);
113 ret = malloc (ret_len + 1);
114 if (ret == NULL)
115 return (NULL);
117 memcpy (ret, ptr, ret_len);
118 ret[ret_len] = 0;
120 ptr += ret_len;
121 *buffer = ptr;
123 return (ret);
124 } /* }}} char *read_unquoted_word */
126 static char *next_token (const char **buffer) /* {{{ */
127 {
128 const char *ptr = *buffer;
129 char *ret;
131 while (isspace ((int) (*ptr)))
132 ptr++;
134 if (ptr[0] == 0)
135 return (NULL);
136 else if (ptr[0] == '"')
137 {
138 ret = read_quoted_string (&ptr);
139 if (ret != NULL)
140 {
141 *buffer = ptr;
142 return (ret);
143 }
144 }
146 ret = read_unquoted_word (&ptr);
147 if (ret != NULL)
148 *buffer = ptr;
150 return (ret);
151 } /* }}} char *next_token */
153 search_info_t *search_parse (const char *search) /* {{{ */
154 {
155 const char *ptr;
156 char *token;
157 search_info_t *si;
159 si = malloc (sizeof (*si));
160 if (si == NULL)
161 return (NULL);
162 memset (si, 0, sizeof (*si));
164 si->terms = array_create ();
165 if (si->terms == NULL)
166 {
167 free (si);
168 return (NULL);
169 }
171 ptr = search;
173 while ((token = next_token (&ptr)) != NULL)
174 {
175 array_append (si->terms, token);
177 free (token);
178 }
180 return (si);
181 } /* }}} search_info_t *search_parse */
183 void search_destroy (search_info_t *si) /* {{{ */
184 {
185 if (si == NULL)
186 return;
188 free (si->host);
189 free (si->plugin);
190 free (si->plugin_instance);
191 free (si->type);
192 free (si->type_instance);
194 array_destroy (si->terms);
195 } /* }}} void search_destroy */
197 /* vim: set sw=2 sts=2 et fdm=marker : */