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Code

Allow forwards though input history

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This commit is contained in:
James Booth 2012-02-27 00:48:55 +00:00
parent 2379ae895f
commit 8f48685930
3 changed files with 36 additions and 8 deletions
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27
input_buffer.c
View File

@ -26,12 +26,12 @@
static char *_inp_buf[BUFMAX]; static char *_inp_buf[BUFMAX];
static int _buf_size; static int _buf_size;
static int _buf_prev; static int _buf_pos;
void inpbuf_init(void) void inpbuf_init(void)
{ {
_buf_size = 0; _buf_size = 0;
_buf_prev = -1; _buf_pos = -1;
} }
void inpbuf_append(char *inp) void inpbuf_append(char *inp)
@ -39,16 +39,31 @@ void inpbuf_append(char *inp)
if (_buf_size < BUFMAX) { if (_buf_size < BUFMAX) {
_inp_buf[_buf_size] = (char*) malloc(strlen(inp) * sizeof(char)); _inp_buf[_buf_size] = (char*) malloc(strlen(inp) * sizeof(char));
strcpy(_inp_buf[_buf_size], inp); strcpy(_inp_buf[_buf_size], inp);
_buf_prev = _buf_size; _buf_pos = _buf_size;
_buf_size++; _buf_size++;
} }
} }
char *inpbuf_get_previous(void) char *inpbuf_previous(void)
{ {
if (_buf_size == 0 || _buf_prev == -1) if (_buf_size == 0 || _buf_pos == -1)
return NULL; return NULL;
return _inp_buf[_buf_prev--];
return _inp_buf[_buf_pos--];
} }
char *inpbuf_next(void)
{
if (_buf_size == 0)
return NULL;
if (_buf_pos == (_buf_size - 1))
return NULL;
if (_buf_pos + 2 >= _buf_size)
return NULL;
int pos = _buf_pos + 2;
_buf_pos++;
return _inp_buf[pos];
}

3
input_buffer.h
View File

@ -26,6 +26,7 @@
void inpbuf_init(void); void inpbuf_init(void);
void inpbuf_append(char *inp); void inpbuf_append(char *inp);
char *inpbuf_get_previous(void); char *inpbuf_previous(void);
char *inpbuf_next(void);
#endif #endif

14
input_win.c
View File

@ -125,7 +125,7 @@ void inp_poll_char(int *ch, char *input, int *size)
// up arrow // up arrow
} else if (*ch == KEY_UP) { } else if (*ch == KEY_UP) {
char *prev = inpbuf_get_previous(); char *prev = inpbuf_previous();
if (prev) { if (prev) {
strcpy(input, prev); strcpy(input, prev);
*size = strlen(input); *size = strlen(input);
@ -135,6 +135,18 @@ void inp_poll_char(int *ch, char *input, int *size)
waddch(inp_win, input[i]); waddch(inp_win, input[i]);
} }
// down arrow
} else if (*ch == KEY_DOWN) {
char *next = inpbuf_next();
if (next) {
strcpy(input, next);
*size = strlen(input);
inp_clear();
int i;
for (i = 0; i < *size; i++)
waddch(inp_win, input[i]);
}
// else if not error, newline or special key, // else if not error, newline or special key,
// show it and store it // show it and store it
} else if (*ch != ERR && } else if (*ch != ERR &&