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Add key/value functions & data types

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This commit is contained in:
Julien BLACHE 2010-09-18 17:15:41 +02:00
parent aa57931879
commit 33d51f0652
2 changed files with 165 additions and 0 deletions
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133
src/misc.c
View File

@ -256,6 +256,139 @@ safe_hextou64(const char *str, uint64_t *val)
return 0;
}
/* Key/value functions */
int
keyval_add_size(struct keyval *kv, const char *name, const char *value, size_t size)
{
struct onekeyval *okv;
const char *val;
/* Check for duplicate key names */
val = keyval_get(kv, name);
if (val)
{
/* Same value, fine */
if (strcmp(val, value) == 0)
return 0;
else /* Different value, bad */
return -1;
}
okv = (struct onekeyval *)malloc(sizeof(struct onekeyval));
if (!okv)
{
DPRINTF(E_LOG, L_MISC, "Out of memory for new keyval\n");
return -1;
}
okv->name = strdup(name);
if (!okv->name)
{
DPRINTF(E_LOG, L_MISC, "Out of memory for new keyval name\n");
free(okv);
return -1;
}
okv->value = (char *)malloc(size + 1);
if (!okv->value)
{
DPRINTF(E_LOG, L_MISC, "Out of memory for new keyval value\n");
free(okv->name);
free(okv);
return -1;
}
memcpy(okv->value, value, size);
okv->value[size] = '\0';
okv->next = NULL;
if (!kv->head)
kv->head = okv;
if (kv->tail)
kv->tail->next = okv;
kv->tail = okv;
return 0;
}
int
keyval_add(struct keyval *kv, const char *name, const char *value)
{
return keyval_add_size(kv, name, value, strlen(value));
}
void
keyval_remove(struct keyval *kv, const char *name)
{
struct onekeyval *okv;
struct onekeyval *pokv;
for (pokv = NULL, okv = kv->head; okv; pokv = okv, okv = okv->next)
{
if (strcasecmp(okv->name, name) == 0)
break;
}
if (!okv)
return;
if (okv == kv->head)
kv->head = okv->next;
if (okv == kv->tail)
kv->tail = pokv;
if (pokv)
pokv->next = okv->next;
free(okv->name);
free(okv->value);
free(okv);
}
const char *
keyval_get(struct keyval *kv, const char *name)
{
struct onekeyval *okv;
for (okv = kv->head; okv; okv = okv->next)
{
if (strcasecmp(okv->name, name) == 0)
return okv->value;
}
return NULL;
}
void
keyval_clear(struct keyval *kv)
{
struct onekeyval *hokv;
struct onekeyval *okv;
hokv = kv->head;
for (okv = hokv; hokv; okv = hokv)
{
hokv = okv->next;
free(okv->name);
free(okv->value);
free(okv);
}
kv->head = NULL;
kv->tail = NULL;
}
char *
m_realpath(const char *pathname)
{

32
src/misc.h
View File

@ -4,6 +4,20 @@
#include <stdint.h>
struct onekeyval {
char *name;
char *value;
struct onekeyval *next;
};
struct keyval {
struct onekeyval *head;
struct onekeyval *tail;
};
int
safe_atoi32(const char *str, int32_t *val);
@ -22,6 +36,24 @@ safe_atou64(const char *str, uint64_t *val);
int
safe_hextou64(const char *str, uint64_t *val);
/* Key/value functions */
int
keyval_add(struct keyval *kv, const char *name, const char *value);
int
keyval_add_size(struct keyval *kv, const char *name, const char *value, size_t size);
void
keyval_remove(struct keyval *kv, const char *name);
const char *
keyval_get(struct keyval *kv, const char *name);
void
keyval_clear(struct keyval *kv);
char *
m_realpath(const char *pathname);