mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-15 04:31:49 +08:00
109 lines
4.0 KiB
C
109 lines
4.0 KiB
C
/* History.h -- the names of functions that you can call in history. */
|
|
|
|
typedef struct _hist_entry {
|
|
char *line;
|
|
char *data;
|
|
} HIST_ENTRY;
|
|
|
|
/* For convenience only. You set this when interpreting history commands.
|
|
It is the logical offset of the first history element. */
|
|
extern int history_base;
|
|
|
|
/* Begin a session in which the history functions might be used. This
|
|
just initializes the interactive variables. */
|
|
extern void using_history ();
|
|
|
|
/* Place STRING at the end of the history list.
|
|
The associated data field (if any) is set to NULL. */
|
|
extern void add_history ();
|
|
|
|
/* Returns the number which says what history element we are now
|
|
looking at. */
|
|
extern int where_history ();
|
|
|
|
/* Set the position in the history list to POS. */
|
|
int history_set_pos ();
|
|
|
|
/* Search for STRING in the history list, starting at POS, an
|
|
absolute index into the list. DIR, if negative, says to search
|
|
backwards from POS, else forwards.
|
|
Returns the absolute index of the history element where STRING
|
|
was found, or -1 otherwise. */
|
|
extern int history_search_pos ();
|
|
|
|
/* A reasonably useless function, only here for completeness. WHICH
|
|
is the magic number that tells us which element to delete. The
|
|
elements are numbered from 0. */
|
|
extern HIST_ENTRY *remove_history ();
|
|
|
|
/* Stifle the history list, remembering only MAX number of entries. */
|
|
extern void stifle_history ();
|
|
|
|
/* Stop stifling the history. This returns the previous amount the
|
|
history was stifled by. The value is positive if the history was
|
|
stifled, negative if it wasn't. */
|
|
extern int unstifle_history ();
|
|
|
|
/* Add the contents of FILENAME to the history list, a line at a time.
|
|
If FILENAME is NULL, then read from ~/.history. Returns 0 if
|
|
successful, or errno if not. */
|
|
extern int read_history ();
|
|
|
|
/* Append the current history to FILENAME. If FILENAME is NULL,
|
|
then append the history list to ~/.history. Values returned
|
|
are as in read_history (). */
|
|
extern int write_history ();
|
|
|
|
|
|
/* Make the history entry at WHICH have LINE and DATA. This returns
|
|
the old entry so you can dispose of the data. In the case of an
|
|
invalid WHICH, a NULL pointer is returned. */
|
|
extern HIST_ENTRY *replace_history_entry ();
|
|
|
|
/* Return the history entry at the current position, as determined by
|
|
history_offset. If there is no entry there, return a NULL pointer. */
|
|
HIST_ENTRY *current_history ();
|
|
|
|
/* Back up history_offset to the previous history entry, and return
|
|
a pointer to that entry. If there is no previous entry, return
|
|
a NULL pointer. */
|
|
extern HIST_ENTRY *previous_history ();
|
|
|
|
/* Move history_offset forward to the next item in the input_history,
|
|
and return the a pointer to that entry. If there is no next entry,
|
|
return a NULL pointer. */
|
|
extern HIST_ENTRY *next_history ();
|
|
|
|
/* Return a NULL terminated array of HIST_ENTRY which is the current input
|
|
history. Element 0 of this list is the beginning of time. If there
|
|
is no history, return NULL. */
|
|
extern HIST_ENTRY **history_list ();
|
|
|
|
/* Search the history for STRING, starting at history_offset.
|
|
If DIRECTION < 0, then the search is through previous entries,
|
|
else through subsequent. If the string is found, then
|
|
current_history () is the history entry, and the value of this function
|
|
is the offset in the line of that history entry that the string was
|
|
found in. Otherwise, nothing is changed, and a -1 is returned. */
|
|
extern int history_search ();
|
|
|
|
/* Expand the string STRING, placing the result into OUTPUT, a pointer
|
|
to a string. Returns:
|
|
|
|
0) If no expansions took place (or, if the only change in
|
|
the text was the de-slashifying of the history expansion
|
|
character)
|
|
1) If expansions did take place
|
|
-1) If there was an error in expansion.
|
|
|
|
If an error ocurred in expansion, then OUTPUT contains a descriptive
|
|
error message. */
|
|
extern int history_expand ();
|
|
|
|
/* Extract a string segment consisting of the FIRST through LAST
|
|
arguments present in STRING. Arguments are broken up as in
|
|
the shell. */
|
|
extern char *history_arg_extract ();
|
|
|
|
|