};
+/**
+ * Used for diffing a configuration object against
+ * the default one
+ */
+struct DiffHandle
+{
+ const struct GNUNET_CONFIGURATION_Handle *cfgDefault;
+ struct GNUNET_CONFIGURATION_Handle *cfgDiff;
+};
+
+
+
/**
* Create a GNUNET_CONFIGURATION_Handle.
*
if (1 == sscanf (line, "@INLINE@ %191[^\n]", value))
{
/* @INLINE@ value */
- if (0 != GNUNET_CONFIGURATION_parse (cfg, value))
+ if (GNUNET_OK != GNUNET_CONFIGURATION_parse (cfg, value))
ret = GNUNET_SYSERR; /* failed to parse included config */
}
else if (1 == sscanf (line, "[%99[^]]]", value))
GNUNET_assert (0 == fclose (fp));
if (error != 0)
{
- cfg->dirty = GNUNET_SYSERR; /* last write failed */
+ cfg->dirty = GNUNET_SYSERR; /* last write failed */
return GNUNET_SYSERR;
}
- cfg->dirty = GNUNET_NO; /* last write succeeded */
+ cfg->dirty = GNUNET_NO; /* last write succeeded */
return GNUNET_OK;
}
* @param iter function to call on each option
* @param iter_cls closure for iter
*/
-void GNUNET_CONFIGURATION_iterate (const struct GNUNET_CONFIGURATION_Handle *cfg,
- GNUNET_CONFIGURATION_Iterator iter,
- void *iter_cls)
+void
+GNUNET_CONFIGURATION_iterate (const struct GNUNET_CONFIGURATION_Handle *cfg,
+ GNUNET_CONFIGURATION_Iterator iter,
+ void *iter_cls)
{
struct ConfigSection *spos;
struct ConfigEntry *epos;
{
epos = spos->entries;
while (epos != NULL)
- {
- iter (iter_cls, spos->name, epos->key, epos->val);
- epos = epos->next;
- }
+ {
+ iter (iter_cls, spos->name, epos->key, epos->val);
+ epos = epos->next;
+ }
spos = spos->next;
}
}
*/
static void
copy_entry (void *cls,
- const char *section,
- const char *option,
- const char *value)
+ const char *section, const char *option, const char *value)
{
struct GNUNET_CONFIGURATION_Handle *dst = cls;
GNUNET_CONFIGURATION_set_value_string (dst, section, option, value);
* @return matching entry, NULL if not found
*/
static struct ConfigSection *
-findSection (const struct GNUNET_CONFIGURATION_Handle *cfg, const char *section)
+findSection (const struct GNUNET_CONFIGURATION_Handle *cfg,
+ const char *section)
{
struct ConfigSection *pos;
}
+/**
+ * A callback function, compares entries from two configurations
+ * (default against a new configuration) and write the diffs in a
+ * diff-configuration object (the callback object).
+ *
+ * @param cls the diff configuration (struct DiffHandle*)
+ * @param section section for the value (of the default conf.)
+ * @param option option name of the value (of the default conf.)
+ * @param value value to copy (of the default conf.)
+ */
+static void
+compareEntries (void *cls,
+ const char *section, const char *option, const char *value)
+{
+ struct DiffHandle *dh = cls;
+ struct ConfigEntry *entNew;
+
+ entNew = findEntry (dh->cfgDefault, section, option);
+ if ( (entNew != NULL) &&
+ (strcmp (entNew->val, value) == 0) )
+ return;
+ GNUNET_CONFIGURATION_set_value_string (dh->cfgDiff,
+ section,
+ option,
+ value);
+}
+
+
+/**
+ * Write only configuration entries that have been changed to configuration file
+ * @param cfgDefault default configuration
+ * @param cfgNew new configuration
+ * @param filename where to write the configuration diff between default and new
+ * @return GNUNET_OK on success, GNUNET_SYSERR on error
+ */
+int
+GNUNET_CONFIGURATION_write_diffs (const struct GNUNET_CONFIGURATION_Handle
+ *cfgDefault,
+ const struct GNUNET_CONFIGURATION_Handle *cfgNew,
+ const char *filename)
+{
+ int ret;
+ struct DiffHandle diffHandle;
+
+ diffHandle.cfgDiff = GNUNET_CONFIGURATION_create ();
+ diffHandle.cfgDefault = cfgDefault;
+ GNUNET_CONFIGURATION_iterate (cfgNew, compareEntries, &diffHandle);
+ ret = GNUNET_CONFIGURATION_write (diffHandle.cfgDiff, filename);
+ GNUNET_CONFIGURATION_destroy (diffHandle.cfgDiff);
+ return ret;
+}
+
+
/**
* Set a configuration value that should be a string.
*
* @return GNUNET_OK on success, GNUNET_SYSERR on error
*/
int
-GNUNET_CONFIGURATION_get_value_number (const struct GNUNET_CONFIGURATION_Handle
- *cfg, const char *section,
+GNUNET_CONFIGURATION_get_value_number (const struct
+ GNUNET_CONFIGURATION_Handle *cfg,
+ const char *section,
const char *option,
unsigned long long *number)
{
*/
int
GNUNET_CONFIGURATION_get_value_time (const struct GNUNET_CONFIGURATION_Handle
- *cfg, const char *section,
- const char *option,
- struct GNUNET_TIME_Relative *time)
+ *cfg, const char *section,
+ const char *option,
+ struct GNUNET_TIME_Relative *time)
{
unsigned long long num;
int ret;
- ret = GNUNET_CONFIGURATION_get_value_number (cfg,
- section,
- option,
- &num);
+ ret = GNUNET_CONFIGURATION_get_value_number (cfg, section, option, &num);
if (ret == GNUNET_OK)
time->value = (uint64_t) num;
return ret;
* @return GNUNET_OK on success, GNUNET_SYSERR on error
*/
int
-GNUNET_CONFIGURATION_get_value_string (const struct GNUNET_CONFIGURATION_Handle
- *cfg, const char *section,
+GNUNET_CONFIGURATION_get_value_string (const struct
+ GNUNET_CONFIGURATION_Handle *cfg,
+ const char *section,
const char *option, char **value)
{
struct ConfigEntry *e;
* @return GNUNET_OK on success, GNUNET_SYSERR on error
*/
int
-GNUNET_CONFIGURATION_get_value_choice (const struct GNUNET_CONFIGURATION_Handle
- *cfg, const char *section,
+GNUNET_CONFIGURATION_get_value_choice (const struct
+ GNUNET_CONFIGURATION_Handle *cfg,
+ const char *section,
const char *option,
const char **choices,
const char **value)
* @return GNUNET_YES if so, GNUNET_NO if not.
*/
int
-GNUNET_CONFIGURATION_have_value (const struct GNUNET_CONFIGURATION_Handle *cfg,
- const char *section, const char *option)
+GNUNET_CONFIGURATION_have_value (const struct GNUNET_CONFIGURATION_Handle
+ *cfg, const char *section,
+ const char *option)
{
struct ConfigEntry *e;
if ((NULL == (e = findEntry (cfg, section, option))) || (e->val == NULL))
* @return $-expanded string
*/
char *
-GNUNET_CONFIGURATION_expand_dollar (const struct GNUNET_CONFIGURATION_Handle *cfg,
- char *orig)
+GNUNET_CONFIGURATION_expand_dollar (const struct GNUNET_CONFIGURATION_Handle
+ *cfg, char *orig)
{
int i;
char *prefix;
orig[i] = '\0';
post = &orig[i + 1];
}
- if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_string (cfg,
- "PATHS",
- &orig[1], &prefix))
+ if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_filename (cfg,
+ "PATHS",
+ &orig[1], &prefix))
{
if (NULL == (env = getenv (&orig[1])))
{
* @return GNUNET_OK on success, GNUNET_SYSERR on error
*/
int
-GNUNET_CONFIGURATION_get_value_filename (const struct GNUNET_CONFIGURATION_Handle
- *cfg, const char *section,
+GNUNET_CONFIGURATION_get_value_filename (const struct
+ GNUNET_CONFIGURATION_Handle *cfg,
+ const char *section,
const char *option, char **value)
{
int ret;
* @return GNUNET_YES, GNUNET_NO or GNUNET_SYSERR
*/
int
-GNUNET_CONFIGURATION_get_value_yesno (const struct GNUNET_CONFIGURATION_Handle *cfg,
- const char *section, const char *option)
+GNUNET_CONFIGURATION_get_value_yesno (const struct GNUNET_CONFIGURATION_Handle
+ *cfg, const char *section,
+ const char *option)
{
static const char *yesno[] = { "YES", "NO", NULL };
const char *val;
GNUNET_CONFIGURATION_iterate_value_filenames (const struct
GNUNET_CONFIGURATION_Handle
*cfg, const char *section,
- const char *option,
+ const char *option,
GNUNET_FileNameCallback cb,
void *cb_cls)
{
return GNUNET_SYSERR;
}
GNUNET_free (baseconfig);
+ if ( ((GNUNET_YES != GNUNET_CONFIGURATION_have_value (cfg,
+ "PATHS",
+ "DEFAULTCONFIG"))) &&
+ (filename != NULL) )
+ GNUNET_CONFIGURATION_set_value_string (cfg,
+ "PATHS",
+ "DEFAULTCONFIG",
+ filename);
if ((GNUNET_YES == GNUNET_CONFIGURATION_have_value (cfg,
"TESTING",
"WEAKRANDOM")) &&
projects / oweals / gnunet.git / blobdiff