search.h: Numerous grammatical fixes, comment updates
Tweaks (no functional changes) to include/search.h, including:
* use standard multiple inclusion check
* fix spelling mistakes
* have comments match actual names in function prototypes
* remove obsolete reference to "do_apply"
* replace "hashing table" with "hash table"
Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca>
diff --git a/include/search.h b/include/search.h
index 343dbc3..402dfd8 100644
--- a/include/search.h
+++ b/include/search.h
@@ -12,8 +12,8 @@
* Copyright (C) 2010-2013 Wolfgang Denk <wd@denx.de>
*/
-#ifndef _SEARCH_H
-#define _SEARCH_H 1
+#ifndef _SEARCH_H_
+#define _SEARCH_H_
#include <stddef.h>
@@ -25,7 +25,7 @@
env_op_overwrite,
};
-/* Action which shall be performed in the call the hsearch. */
+/* Action which shall be performed in the call to hsearch. */
typedef enum {
FIND,
ENTER
@@ -45,7 +45,7 @@
/*
* Family of hash table handling functions. The functions also
* have reentrant counterparts ending with _r. The non-reentrant
- * functions all work on a signle internal hashing table.
+ * functions all work on a single internal hash table.
*/
/* Data type for reentrant functions. */
@@ -55,38 +55,38 @@
unsigned int filled;
/*
* Callback function which will check whether the given change for variable
- * "item" to "newval" may be applied or not, and possibly apply such change.
+ * "__item" to "newval" may be applied or not, and possibly apply such change.
* When (flag & H_FORCE) is set, it shall not print out any error message and
* shall force overwriting of write-once variables.
-.* Must return 0 for approval, 1 for denial.
+ * Must return 0 for approval, 1 for denial.
*/
int (*change_ok)(const ENTRY *__item, const char *newval, enum env_op,
int flag);
};
-/* Create a new hashing table which will at most contain NEL elements. */
+/* Create a new hash table which will contain at most "__nel" elements. */
extern int hcreate_r(size_t __nel, struct hsearch_data *__htab);
-/* Destroy current internal hashing table. */
+/* Destroy current internal hash table. */
extern void hdestroy_r(struct hsearch_data *__htab);
/*
- * Search for entry matching ITEM.key in internal hash table. If
+ * Search for entry matching __item.key in internal hash table. If
* ACTION is `FIND' return found entry or signal error by returning
* NULL. If ACTION is `ENTER' replace existing data (if any) with
- * ITEM.data.
+ * __item.data.
* */
extern int hsearch_r(ENTRY __item, ACTION __action, ENTRY ** __retval,
struct hsearch_data *__htab, int __flag);
/*
- * Search for an entry matching `MATCH'. Otherwise, Same semantics
+ * Search for an entry matching "__match". Otherwise, Same semantics
* as hsearch_r().
*/
extern int hmatch_r(const char *__match, int __last_idx, ENTRY ** __retval,
struct hsearch_data *__htab);
-/* Search and delete entry matching ITEM.key in internal hash table. */
+/* Search and delete entry matching "__key" in internal hash table. */
extern int hdelete_r(const char *__key, struct hsearch_data *__htab,
int __flag);
@@ -97,8 +97,6 @@
/*
* nvars: length of vars array
* vars: array of strings (variable names) to import (nvars == 0 means all)
- * do_apply: whether to call callback function to check the new argument,
- * and possibly apply changes (false means accept everything)
*/
extern int himport_r(struct hsearch_data *__htab,
const char *__env, size_t __size, const char __sep,
@@ -123,4 +121,4 @@
#define H_PROGRAMMATIC (1 << 9) /* indicate that an import is from setenv() */
#define H_ORIGIN_FLAGS (H_INTERACTIVE | H_PROGRAMMATIC)
-#endif /* search.h */
+#endif /* _SEARCH_H_ */