Opt: Streamlined opt_shortopt()

[libucw.git] / ucw / conf.h

diff --git a/ucw/conf.h b/ucw/conf.h
index fc228eb86826cb1bb15c0d38e0739306b13681cc..2e8a5ca8889e77066556234f584feaf5d2bb8afe 100644 (file)
--- a/ucw/conf.h
+++ b/ucw/conf.h
@@ -13,6 +13,38 @@
 
 #include <ucw/clists.h>
 
+#ifdef CONFIG_UCW_CLEAN_ABI
+#define cf_close_group ucw_cf_close_group
+#define cf_declare_rel_section ucw_cf_declare_rel_section
+#define cf_declare_section ucw_cf_declare_section
+#define cf_delete_context ucw_cf_delete_context
+#define cf_dump_sections ucw_cf_dump_sections
+#define cf_find_item ucw_cf_find_item
+#define cf_get_pool ucw_cf_get_pool
+#define cf_init_section ucw_cf_init_section
+#define cf_journal_block ucw_cf_journal_block
+#define cf_journal_commit_transaction ucw_cf_journal_commit_transaction
+#define cf_journal_new_transaction ucw_cf_journal_new_transaction
+#define cf_journal_rollback_transaction ucw_cf_journal_rollback_transaction
+#define cf_load ucw_cf_load
+#define cf_malloc ucw_cf_malloc
+#define cf_malloc_zero ucw_cf_malloc_zero
+#define cf_modify_item ucw_cf_modify_item
+#define cf_new_context ucw_cf_new_context
+#define cf_open_group ucw_cf_open_group
+#define cf_parse_double ucw_cf_parse_double
+#define cf_parse_int ucw_cf_parse_int
+#define cf_parse_ip ucw_cf_parse_ip
+#define cf_parse_u64 ucw_cf_parse_u64
+#define cf_printf ucw_cf_printf
+#define cf_reload ucw_cf_reload
+#define cf_revert ucw_cf_revert
+#define cf_set ucw_cf_set
+#define cf_set_journalling ucw_cf_set_journalling
+#define cf_strdup ucw_cf_strdup
+#define cf_switch_context ucw_cf_switch_context
+#endif
+
 struct mempool;
 
 /***
@@ -41,7 +73,7 @@ struct cf_context *cf_new_context(void);
  * of the context is freed, which includes memory obtained by calls to
  * cf_malloc().
  **/
-void cf_free_context(struct cf_context *cc);
+void cf_delete_context(struct cf_context *cc);
 
 /**
  * Make the given configuration context current and return the previously
@@ -63,6 +95,7 @@ struct cf_context *cf_switch_context(struct cf_context *cc);
  * configuration specified in the file are undone.
  **/
 int cf_load(const char *file);
+
 /**
  * Reload configuration from @file, replace the old one.
  * If @file is NULL, reload all loaded configuration files and re-apply
@@ -71,6 +104,7 @@ int cf_load(const char *file);
  * settings are rolled back to the state before calling this function.
  **/
 int cf_reload(const char *file);
+
 /**
  * Parse some part of configuration passed in @string.
  * The syntax is the same as in the <<config:,configuration file>>.
@@ -97,6 +131,12 @@ void cf_open_group(void);
  **/
 int cf_close_group(void);
 
+/**
+ * Return all configuration items to their initial state before loading the
+ * configuration file. If journalling is disabled, it does nothing.
+ **/
+void cf_revert(void);
+
 /*** === Data types [[conf_types]] ***/
 
 enum cf_class {                                /** Class of the configuration item. **/
@@ -384,7 +424,7 @@ struct cf_section {                 /** A section. **/
 #define CF_ANY_NUM             -0x7fffffff
 
 #define DARY_LEN(a) ((uns*)a)[-1]      /** Length of an dynamic array. **/
-#define DARY_ALLOC(type,len,val...) ((struct { uns l; type a[len]; }) { .l = len, .a = { val } }).a
+#define DARY_ALLOC(type,len,val...) ((struct { byte pad[ALIGN_TO(sizeof(uns), CPU_STRUCT_ALIGN) - sizeof(uns)]; uns l; type a[len]; }) { .l = len, .a = { val } }).a
   // creates a static instance of a dynamic array
 
 /***
@@ -480,8 +520,17 @@ void cf_journal_rollback_transaction(uns new_pool, struct cf_journal_item *oldj)
  * If @allow_unknown is set to 0 and a variable not described in @sec
  * is found in the configuration file, it produces an error.
  * If you set it to 1, all such variables are ignored.
+ *
+ * Please note that a single section definition cannot be used in multiple
+ * configuration contexts simultaneously.
  **/
 void cf_declare_section(const char *name, struct cf_section *sec, uns allow_unknown);
+/**
+ * Like @cf_declare_section(), but instead of item pointers, the section
+ * contains offsets relative to @ptr. In other words, it does the same
+ * as `CF_SECTION`, but for top-level sections.
+ **/
+void cf_declare_rel_section(const char *name, struct cf_section *sec, void *ptr, uns allow_unknown);
 /**
  * If you have a section in a structure and you want to initialize it
  * (eg. if you want a copy of default values outside the configuration),