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-rw-r--r--ChangeLog4
-rw-r--r--configure.in2
-rw-r--r--json_object.c20
-rw-r--r--json_object.h18
-rw-r--r--json_util.c2
-rw-r--r--linkhash.c24
-rw-r--r--linkhash.h30
-rw-r--r--printbuf.c2
-rw-r--r--printbuf.h2
9 files changed, 54 insertions, 50 deletions
diff --git a/ChangeLog b/ChangeLog
index 784663a..c91e2c7 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+0.9
+ * Add const correctness to public interfaces
+ Gerard Krol, g dot c dot krol at student dot tudelft dot nl
+
0.8
* Add va_end for every va_start
Dotan Barak, dotanba at gmail dot com
diff --git a/configure.in b/configure.in
index 7bcf3dc..8f0fff3 100644
--- a/configure.in
+++ b/configure.in
@@ -1,7 +1,7 @@
AC_PREREQ(2.52)
# Process this file with autoconf to produce a configure script.
-AC_INIT([json-c], 0.8, [michael@metaparadigm.com])
+AC_INIT([json-c], 0.9, [michael@metaparadigm.com])
AM_INIT_AUTOMAKE(AC_PACKAGE_NAME, AC_PACKAGE_VERSION)
diff --git a/json_object.c b/json_object.c
index c702c26..f0ce5f7 100644
--- a/json_object.c
+++ b/json_object.c
@@ -30,11 +30,11 @@
#define REFCOUNT_DEBUG 1
-char *json_number_chars = "0123456789.+-eE";
-char *json_hex_chars = "0123456789abcdef";
+const char *json_number_chars = "0123456789.+-eE";
+const char *json_hex_chars = "0123456789abcdef";
#ifdef REFCOUNT_DEBUG
-static char* json_type_name[] = {
+static const char* json_type_name[] = {
"null",
"boolean",
"double",
@@ -188,7 +188,7 @@ enum json_type json_object_get_type(struct json_object *this)
/* json_object_to_json_string */
-char* json_object_to_json_string(struct json_object *this)
+const char* json_object_to_json_string(struct json_object *this)
{
if(!this) return "null";
if(!this->_pb) {
@@ -259,19 +259,19 @@ struct lh_table* json_object_get_object(struct json_object *this)
}
}
-void json_object_object_add(struct json_object* this, char *key,
+void json_object_object_add(struct json_object* this, const char *key,
struct json_object *val)
{
lh_table_delete(this->o.c_object, key);
lh_table_insert(this->o.c_object, strdup(key), val);
}
-struct json_object* json_object_object_get(struct json_object* this, char *key)
+struct json_object* json_object_object_get(struct json_object* this, const char *key)
{
return (struct json_object*) lh_table_lookup(this->o.c_object, key);
}
-void json_object_object_del(struct json_object* this, char *key)
+void json_object_object_del(struct json_object* this, const char *key)
{
lh_table_delete(this->o.c_object, key);
}
@@ -404,7 +404,7 @@ static void json_object_string_delete(struct json_object* this)
json_object_generic_delete(this);
}
-struct json_object* json_object_new_string(char *s)
+struct json_object* json_object_new_string(const char *s)
{
struct json_object *this = json_object_new(json_type_string);
if(!this) return NULL;
@@ -414,7 +414,7 @@ struct json_object* json_object_new_string(char *s)
return this;
}
-struct json_object* json_object_new_string_len(char *s, int len)
+struct json_object* json_object_new_string_len(const char *s, int len)
{
struct json_object *this = json_object_new(json_type_string);
if(!this) return NULL;
@@ -424,7 +424,7 @@ struct json_object* json_object_new_string_len(char *s, int len)
return this;
}
-char* json_object_get_string(struct json_object *this)
+const char* json_object_get_string(struct json_object *this)
{
if(!this) return NULL;
switch(this->o_type) {
diff --git a/json_object.h b/json_object.h
index d4fc887..bbfea85 100644
--- a/json_object.h
+++ b/json_object.h
@@ -20,8 +20,8 @@
#undef TRUE
#define TRUE ((boolean)1)
-extern char *json_number_chars;
-extern char *json_hex_chars;
+extern const char *json_number_chars;
+extern const char *json_hex_chars;
/* forward structure definitions */
@@ -90,7 +90,7 @@ extern enum json_type json_object_get_type(struct json_object *obj);
* @param obj the json_object instance
* @returns a string in JSON format
*/
-extern char* json_object_to_json_string(struct json_object *obj);
+extern const char* json_object_to_json_string(struct json_object *obj);
/* object type methods */
@@ -116,7 +116,7 @@ extern struct lh_table* json_object_get_object(struct json_object *obj);
* @param key the object field name (a private copy will be duplicated)
* @param val a json_object or NULL member to associate with the given field
*/
-extern void json_object_object_add(struct json_object* obj, char *key,
+extern void json_object_object_add(struct json_object* obj, const char *key,
struct json_object *val);
/** Get the json_object associate with a given object field
@@ -125,7 +125,7 @@ extern void json_object_object_add(struct json_object* obj, char *key,
* @returns the json_object associated with the given field name
*/
extern struct json_object* json_object_object_get(struct json_object* obj,
- char *key);
+ const char *key);
/** Delete the given json_object field
*
@@ -134,7 +134,7 @@ extern struct json_object* json_object_object_get(struct json_object* obj,
* @param obj the json_object instance
* @param key the object field name
*/
-extern void json_object_object_del(struct json_object* obj, char *key);
+extern void json_object_object_del(struct json_object* obj, const char *key);
/** Iterate through all keys and values of an object
* @param obj the json_object instance
@@ -290,9 +290,9 @@ extern double json_object_get_double(struct json_object *obj);
* @param s the string
* @returns a json_object of type json_type_string
*/
-extern struct json_object* json_object_new_string(char *s);
+extern struct json_object* json_object_new_string(const char *s);
-extern struct json_object* json_object_new_string_len(char *s, int len);
+extern struct json_object* json_object_new_string_len(const char *s, int len);
/** Get the string value of a json_object
*
@@ -305,6 +305,6 @@ extern struct json_object* json_object_new_string_len(char *s, int len);
* @param obj the json_object instance
* @returns a string
*/
-extern char* json_object_get_string(struct json_object *obj);
+extern const char* json_object_get_string(struct json_object *obj);
#endif
diff --git a/json_util.c b/json_util.c
index 1a65596..0262ca2 100644
--- a/json_util.c
+++ b/json_util.c
@@ -85,7 +85,7 @@ struct json_object* json_object_from_file(char *filename)
int json_object_to_file(char *filename, struct json_object *obj)
{
- char *json_str;
+ const char *json_str;
int fd, ret;
unsigned int wpos, wsize;
diff --git a/linkhash.c b/linkhash.c
index fc72bf6..5d4e46f 100644
--- a/linkhash.c
+++ b/linkhash.c
@@ -29,18 +29,18 @@ void lh_abort(const char *msg, ...)
exit(1);
}
-unsigned long lh_ptr_hash(void *k)
+unsigned long lh_ptr_hash(const void *k)
{
/* CAW: refactored to be 64bit nice */
return (unsigned long)((((ptrdiff_t)k * LH_PRIME) >> 4) & ULONG_MAX);
}
-int lh_ptr_equal(void *k1, void *k2)
+int lh_ptr_equal(const void *k1, const void *k2)
{
return (k1 == k2);
}
-unsigned long lh_char_hash(void *k)
+unsigned long lh_char_hash(const void *k)
{
unsigned int h = 0;
const char* data = k;
@@ -50,12 +50,12 @@ unsigned long lh_char_hash(void *k)
return h;
}
-int lh_char_equal(void *k1, void *k2)
+int lh_char_equal(const void *k1, const void *k2)
{
- return (strcmp((char*)k1, (char*)k2) == 0);
+ return (strcmp((const char*)k1, (const char*)k2) == 0);
}
-struct lh_table* lh_table_new(int size, char *name,
+struct lh_table* lh_table_new(int size, const char *name,
lh_entry_free_fn *free_fn,
lh_hash_fn *hash_fn,
lh_equal_fn *equal_fn)
@@ -77,13 +77,13 @@ struct lh_table* lh_table_new(int size, char *name,
return t;
}
-struct lh_table* lh_kchar_table_new(int size, char *name,
+struct lh_table* lh_kchar_table_new(int size, const char *name,
lh_entry_free_fn *free_fn)
{
return lh_table_new(size, name, free_fn, lh_char_hash, lh_char_equal);
}
-struct lh_table* lh_kptr_table_new(int size, char *name,
+struct lh_table* lh_kptr_table_new(int size, const char *name,
lh_entry_free_fn *free_fn)
{
return lh_table_new(size, name, free_fn, lh_ptr_hash, lh_ptr_equal);
@@ -122,7 +122,7 @@ void lh_table_free(struct lh_table *t)
}
-int lh_table_insert(struct lh_table *t, void *k, void *v)
+int lh_table_insert(struct lh_table *t, void *k, const void *v)
{
unsigned long h, n;
@@ -156,7 +156,7 @@ int lh_table_insert(struct lh_table *t, void *k, void *v)
}
-struct lh_entry* lh_table_lookup_entry(struct lh_table *t, void *k)
+struct lh_entry* lh_table_lookup_entry(struct lh_table *t, const void *k)
{
unsigned long h = t->hash_fn(k);
unsigned long n = h % t->size;
@@ -172,7 +172,7 @@ struct lh_entry* lh_table_lookup_entry(struct lh_table *t, void *k)
}
-void* lh_table_lookup(struct lh_table *t, void *k)
+const void* lh_table_lookup(struct lh_table *t, const void *k)
{
struct lh_entry *e = lh_table_lookup_entry(t, k);
if(e) return e->v;
@@ -209,7 +209,7 @@ int lh_table_delete_entry(struct lh_table *t, struct lh_entry *e)
}
-int lh_table_delete(struct lh_table *t, void *k)
+int lh_table_delete(struct lh_table *t, const void *k)
{
struct lh_entry *e = lh_table_lookup_entry(t, k);
if(!e) return -1;
diff --git a/linkhash.h b/linkhash.h
index 785ddf4..9b5ef9d 100644
--- a/linkhash.h
+++ b/linkhash.h
@@ -36,11 +36,11 @@ typedef void (lh_entry_free_fn) (struct lh_entry *e);
/**
* callback function prototypes
*/
-typedef unsigned long (lh_hash_fn) (void *k);
+typedef unsigned long (lh_hash_fn) (const void *k);
/**
* callback function prototypes
*/
-typedef int (lh_equal_fn) (void *k1, void *k2);
+typedef int (lh_equal_fn) (const void *k1, const void *k2);
/**
* An entry in the hash table
@@ -53,7 +53,7 @@ struct lh_entry {
/**
* The value.
*/
- void *v;
+ const void *v;
/**
* The next entry
*/
@@ -106,7 +106,7 @@ struct lh_table {
/**
* Name of the hash table.
*/
- char *name;
+ const char *name;
/**
* The first entry.
@@ -132,11 +132,11 @@ struct lh_table {
/**
* Pre-defined hash and equality functions
*/
-extern unsigned long lh_ptr_hash(void *k);
-extern int lh_ptr_equal(void *k1, void *k2);
+extern unsigned long lh_ptr_hash(const void *k);
+extern int lh_ptr_equal(const void *k1, const void *k2);
-extern unsigned long lh_char_hash(void *k);
-extern int lh_char_equal(void *k1, void *k2);
+extern unsigned long lh_char_hash(const void *k);
+extern int lh_char_equal(const void *k1, const void *k2);
/**
@@ -170,7 +170,7 @@ for(entry = table->head; entry && ((tmp = entry->next) || 1); entry = tmp)
* and C strings respectively.
* @return a pointer onto the linkhash table.
*/
-extern struct lh_table* lh_table_new(int size, char *name,
+extern struct lh_table* lh_table_new(int size, const char *name,
lh_entry_free_fn *free_fn,
lh_hash_fn *hash_fn,
lh_equal_fn *equal_fn);
@@ -183,7 +183,7 @@ extern struct lh_table* lh_table_new(int size, char *name,
* @param free_fn callback function used to free memory for entries.
* @return a pointer onto the linkhash table.
*/
-extern struct lh_table* lh_kchar_table_new(int size, char *name,
+extern struct lh_table* lh_kchar_table_new(int size, const char *name,
lh_entry_free_fn *free_fn);
@@ -195,7 +195,7 @@ extern struct lh_table* lh_kchar_table_new(int size, char *name,
* @param free_fn callback function used to free memory for entries.
* @return a pointer onto the linkhash table.
*/
-extern struct lh_table* lh_kptr_table_new(int size, char *name,
+extern struct lh_table* lh_kptr_table_new(int size, const char *name,
lh_entry_free_fn *free_fn);
@@ -214,7 +214,7 @@ extern void lh_table_free(struct lh_table *t);
* @param k a pointer to the key to insert.
* @param v a pointer to the value to insert.
*/
-extern int lh_table_insert(struct lh_table *t, void *k, void *v);
+extern int lh_table_insert(struct lh_table *t, void *k, const void *v);
/**
@@ -223,7 +223,7 @@ extern int lh_table_insert(struct lh_table *t, void *k, void *v);
* @param k a pointer to the key to lookup
* @return a pointer to the record structure of the value or NULL if it does not exist.
*/
-extern struct lh_entry* lh_table_lookup_entry(struct lh_table *t, void *k);
+extern struct lh_entry* lh_table_lookup_entry(struct lh_table *t, const void *k);
/**
* Lookup a record into the table
@@ -231,7 +231,7 @@ extern struct lh_entry* lh_table_lookup_entry(struct lh_table *t, void *k);
* @param k a pointer to the key to lookup
* @return a pointer to the found value or NULL if it does not exist.
*/
-extern void* lh_table_lookup(struct lh_table *t, void *k);
+extern const void* lh_table_lookup(struct lh_table *t, const void *k);
/**
@@ -255,7 +255,7 @@ extern int lh_table_delete_entry(struct lh_table *t, struct lh_entry *e);
* @return 0 if the item was deleted.
* @return -1 if it was not found.
*/
-extern int lh_table_delete(struct lh_table *t, void *k);
+extern int lh_table_delete(struct lh_table *t, const void *k);
void lh_abort(const char *msg, ...);
diff --git a/printbuf.c b/printbuf.c
index cdda47e..6522a69 100644
--- a/printbuf.c
+++ b/printbuf.c
@@ -40,7 +40,7 @@ struct printbuf* printbuf_new()
}
-int printbuf_memappend(struct printbuf *p, char *buf, int size)
+int printbuf_memappend(struct printbuf *p, const char *buf, int size)
{
char *t;
if(p->size - p->bpos <= size) {
diff --git a/printbuf.h b/printbuf.h
index 4591a58..95f7a24 100644
--- a/printbuf.h
+++ b/printbuf.h
@@ -24,7 +24,7 @@ extern struct printbuf*
printbuf_new(void);
extern int
-printbuf_memappend(struct printbuf *p, char *buf, int size);
+printbuf_memappend(struct printbuf *p, const char *buf, int size);
extern int
sprintbuf(struct printbuf *p, const char *msg, ...);