mdw@git.distorted.org.uk Git - disorder/blob - lib/kvp.h

   1 /*
   2  * This file is part of DisOrder.
   3  * Copyright (C) 2004, 2005, 2007, 2008 Richard Kettlewell
   4  *
   5  * This program is free software: you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation, either version 3 of the License, or
   8  * (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
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17  */
  18 /** @file lib/kvp.h
  19  * @brief Linked list of key-value pairs
  20  */
  21
  22 #ifndef KVP_H
  23 #define KVP_H
  24
  25 struct dynstr;
  26 struct sink;
  27
  28 /** @brief Linked list of key-value pairs */
  29 struct kvp {
  30   /** @brief Next entry */
  31   struct kvp *next;
  32
  33   /** @brief Name
  34    *
  35    * Might not be unique.  Must not be null.
  36    */
  37   const char *name;
  38
  39   /** @brief Value
  40    *
  41    * Must not be null.
  42    */
  43   const char *value;
  44 };
  45
  46 struct kvp *kvp_urldecode(const char *ptr, size_t n);
  47 /* url-decode [ptr,ptr+n) */
  48
  49 char *kvp_urlencode(const struct kvp *kvp, size_t *np);
  50 /* url-encode @kvp@ into a null-terminated string.  If @np@ is not
  51  * null return the length thru it. */
  52
  53 int kvp_set(struct kvp **kvpp, const char *name, const char *value);
  54 /* set @name@ to @value@.  If @value@ is 0, remove @name@.
  55  * Returns 1 if we made a real change, else 0. */
  56
  57 const char *kvp_get(const struct kvp *kvp, const char *name);
  58 /* Get the value of @name@ */
  59
  60 int urldecode(struct sink *sink, const char *ptr, size_t n);
  61 /* url-decode the @n@ bytes at @ptr@, writing the results to @s@.
  62  * Return 0 on success, -1 on error. */
  63
  64 int urlencode(struct sink *sink, const char *s, size_t n);
  65 /* url-encode the @n@ bytes at @s@, writing to @sink@.  Return 0 on
  66  * success, -1 on error.  */
  67
  68 char *urlencodestring(const char *s);
  69 /* return the url-encoded form of @s@ */
  70
  71 char *urldecodestring(const char *s, size_t ns);
  72 struct kvp *kvp_make(const char *key, ...);
  73
  74 void kvp_free(struct kvp *k);
  75
  76 #endif /* KVP_H */
  77
  78 /*
  79 Local Variables:
  80 c-basic-offset:2
  81 comment-column:40
  82 End:
  83 */