EXPORT m64p_error CALL ConfigRevertChanges(const char *SectionName)
{
config_section *input_section, *curr_section, *new_section, *temp_next_ptr;
/* check input conditions */
if (!l_ConfigInit)
return M64ERR_NOT_INIT;
if (SectionName == NULL)
return M64ERR_INPUT_ASSERT;
/* walk through the Active section list, looking for a case-insensitive name match with input string */
input_section = l_ConfigListActive;
while (input_section != NULL)
{
if (osal_insensitive_strcmp(SectionName, input_section->name) == 0)
break;
input_section = input_section->next;
}
if (input_section == NULL)
return M64ERR_INPUT_NOT_FOUND;
/* walk through the Saved section list, looking for a case-insensitive name match */
curr_section = l_ConfigListSaved;
while (curr_section != NULL)
{
if (osal_insensitive_strcmp(SectionName, curr_section->name) == 0)
break;
curr_section = curr_section->next;
}
/* if this section isn't present in saved list, then it has been newly created */
if (curr_section == NULL)
return M64ERR_INPUT_NOT_FOUND;
/* we need to save the "next" pointer in the active section, because this will get blown away by the deepcopy */
temp_next_ptr = input_section->next;
/* delete the variables from the Active section */
delete_section_vars(input_section);
/* copy all of the section data from the Saved section to the Active one */
new_section = section_deepcopy(curr_section, input_section);
if (new_section == NULL)
return M64ERR_NO_MEMORY; /* it's very bad if this happens, because original data from Active section has been deleted */
/* new_section should be == to input_section. now put the "next" pointer back */
input_section->next = temp_next_ptr;
/* should be good to go */
return M64ERR_SUCCESS;
}
static void copy_configlist_active_to_saved(void)
{
config_section *curr_section = l_ConfigListActive;
config_section *last_section = NULL;
/* delete any pre-existing Saved config list */
delete_list(&l_ConfigListSaved);
/* duplicate all of the config sections in the Active list, adding them to the Saved list */
while (curr_section != NULL)
{
config_section *new_section = section_deepcopy(curr_section, NULL);
if (new_section == NULL) break;
if (last_section == NULL)
l_ConfigListSaved = new_section;
else
last_section->next = new_section;
last_section = new_section;
curr_section = curr_section->next;
}
}
EXPORT m64p_error CALL ConfigSaveSection(const char *SectionName)
{
config_section *curr_section, *new_section;
config_section **insertion_point;
if (!l_ConfigInit)
return M64ERR_NOT_INIT;
if (SectionName == NULL || strlen(SectionName) < 1)
return M64ERR_INPUT_ASSERT;
/* walk through the Active section list, looking for a case-insensitive name match */
curr_section = find_section(l_ConfigListActive, SectionName);
if (curr_section == NULL)
return M64ERR_INPUT_NOT_FOUND;
/* duplicate this section */
new_section = section_deepcopy(curr_section);
if (new_section == NULL)
return M64ERR_NO_MEMORY;
/* update config section that's in the Saved list with the new one */
insertion_point = find_alpha_section_link(&l_ConfigListSaved, SectionName);
if (*insertion_point != NULL && osal_insensitive_strcmp((*insertion_point)->name, SectionName) == 0)
{
/* the section exists in the saved list and will be replaced */
new_section->next = (*insertion_point)->next;
delete_section(*insertion_point);
*insertion_point = new_section;
}
else
{
/* the section didn't exist in the saved list and has to be inserted */
new_section->next = *insertion_point;
*insertion_point = new_section;
}
/* write the saved config list out to a file */
return (write_configlist_file());
}
EXPORT m64p_error CALL ConfigRevertChanges(const char *SectionName)
{
config_section **active_section_link, *active_section, *saved_section, *new_section;
/* check input conditions */
if (!l_ConfigInit)
return M64ERR_NOT_INIT;
if (SectionName == NULL)
return M64ERR_INPUT_ASSERT;
/* walk through the Active section list, looking for a case-insensitive name match with input string */
active_section_link = find_section_link(&l_ConfigListActive, SectionName);
active_section = *active_section_link;
if (active_section == NULL)
return M64ERR_INPUT_NOT_FOUND;
/* walk through the Saved section list, looking for a case-insensitive name match */
saved_section = find_section(l_ConfigListSaved, SectionName);
if (saved_section == NULL)
{
/* if this section isn't present in saved list, then it has been newly created */
return M64ERR_INPUT_NOT_FOUND;
}
/* copy the section as it is on the disk */
new_section = section_deepcopy(saved_section);
if (new_section == NULL)
return M64ERR_NO_MEMORY;
/* replace active_section with saved_section in the linked list */
*active_section_link = new_section;
new_section->next = active_section->next;
/* release memory associated with active_section */
delete_section(active_section);
return M64ERR_SUCCESS;
}
EXPORT m64p_error CALL ConfigSaveSection(const char *SectionName)
{
config_section *curr_section, *new_section;
if (!l_ConfigInit)
return M64ERR_NOT_INIT;
if (SectionName == NULL || strlen(SectionName) < 1)
return M64ERR_INPUT_ASSERT;
/* walk through the Active section list, looking for a case-insensitive name match */
curr_section = l_ConfigListActive;
while (curr_section != NULL)
{
if (osal_insensitive_strcmp(SectionName, curr_section->name) == 0)
break;
curr_section = curr_section->next;
}
if (curr_section == NULL)
return M64ERR_INPUT_NOT_FOUND;
/* duplicate this section */
new_section = section_deepcopy(curr_section, NULL);
if (new_section == NULL)
return M64ERR_NO_MEMORY;
/* update config section that's in the Saved list with the new one */
if (l_ConfigListSaved == NULL || osal_insensitive_strcmp(SectionName, l_ConfigListSaved->name) < 0)
{
/* the saved section is new and goes at the beginning of the list */
new_section->next = l_ConfigListSaved;
l_ConfigListSaved = new_section;
}
else if (osal_insensitive_strcmp(SectionName, l_ConfigListSaved->name) == 0)
{
/* the saved section replaces the first section in the list */
new_section->next = l_ConfigListSaved->next;
delete_section_vars(l_ConfigListSaved);
free(l_ConfigListSaved);
l_ConfigListSaved = new_section;
}
else
{
curr_section = l_ConfigListSaved;
while (curr_section->next != NULL && osal_insensitive_strcmp(SectionName, curr_section->next->name) > 0)
curr_section = curr_section->next;
if (curr_section->next == NULL || osal_insensitive_strcmp(SectionName, curr_section->next->name) < 0)
{
/* the saved section is new and goes after the curr_section */
new_section->next = curr_section->next;
curr_section->next = new_section;
}
else
{
/* the saved section replaces curr_section->next */
config_section *old_section = curr_section->next;
new_section->next = old_section->next;
delete_section_vars(old_section);
free(old_section);
curr_section->next = new_section;
}
}
/* write the saved config list out to a file */
return (write_configlist_file());
}
