From c6fad60c72bac0b0ba1b7912f866caa3a6cb744c Mon Sep 17 00:00:00 2001 From: Daniel Jacobowitz Date: Fri, 5 May 2006 18:26:14 +0000 Subject: Readline 5.1 import for HEAD. --- readline/history.c | 110 +++++++++++++++++++++++++++++++++++++++++------------ 1 file changed, 85 insertions(+), 25 deletions(-) (limited to 'readline/history.c') diff --git a/readline/history.c b/readline/history.c index 4242f33efe1..a538f91c0d7 100644 --- a/readline/history.c +++ b/readline/history.c @@ -1,6 +1,6 @@ -/* History.c -- standalone history library */ +/* history.c -- standalone history library */ -/* Copyright (C) 1989, 1992 Free Software Foundation, Inc. +/* Copyright (C) 1989-2005 Free Software Foundation, Inc. This file contains the GNU History Library (the Library), a set of routines for managing the text of previously typed lines. @@ -52,6 +52,8 @@ /* The number of slots to increase the_history by. */ #define DEFAULT_HISTORY_GROW_SIZE 50 +static char *hist_inittime PARAMS((void)); + /* **************************************************************** */ /* */ /* History Functions */ @@ -123,14 +125,15 @@ using_history () } /* Return the number of bytes that the primary history entries are using. - This just adds up the lengths of the_history->lines. */ + This just adds up the lengths of the_history->lines and the associated + timestamps. */ int history_total_bytes () { register int i, result; for (i = result = 0; the_history && the_history[i]; i++) - result += strlen (the_history[i]->line); + result += HISTENT_BYTES (the_history[i]); return (result); } @@ -201,11 +204,45 @@ history_get (offset) int local_index; local_index = offset - history_base; - return (local_index >= history_length || local_index < 0 || !the_history) + return (local_index >= history_length || local_index < 0 || the_history == 0) ? (HIST_ENTRY *)NULL : the_history[local_index]; } +time_t +history_get_time (hist) + HIST_ENTRY *hist; +{ + char *ts; + time_t t; + + if (hist == 0 || hist->timestamp == 0) + return 0; + ts = hist->timestamp; + if (ts[0] != history_comment_char) + return 0; + t = (time_t) atol (ts + 1); /* XXX - should use strtol() here */ + return t; +} + +static char * +hist_inittime () +{ + time_t t; + char ts[64], *ret; + + t = (time_t) time ((time_t *)0); +#if defined (HAVE_VSNPRINTF) /* assume snprintf if vsnprintf exists */ + snprintf (ts, sizeof (ts) - 1, "X%lu", (unsigned long) t); +#else + sprintf (ts, "X%lu", (unsigned long) t); +#endif + ret = savestring (ts); + ret[0] = history_comment_char; + + return ret; +} + /* Place STRING at the end of the history list. The data field is set to NULL. */ void @@ -225,10 +262,7 @@ add_history (string) /* If there is something in the slot, then remove it. */ if (the_history[0]) - { - free (the_history[0]->line); - free (the_history[0]); - } + (void) free_history_entry (the_history[0]); /* Copy the rest of the entries, moving down one slot. */ for (i = 0; i < history_length; i++) @@ -260,10 +294,41 @@ add_history (string) temp->line = savestring (string); temp->data = (char *)NULL; + temp->timestamp = hist_inittime (); + the_history[history_length] = (HIST_ENTRY *)NULL; the_history[history_length - 1] = temp; } +/* Change the time stamp of the most recent history entry to STRING. */ +void +add_history_time (string) + const char *string; +{ + HIST_ENTRY *hs; + + hs = the_history[history_length - 1]; + FREE (hs->timestamp); + hs->timestamp = savestring (string); +} + +/* Free HIST and return the data so the calling application can free it + if necessary and desired. */ +histdata_t +free_history_entry (hist) + HIST_ENTRY *hist; +{ + histdata_t x; + + if (hist == 0) + return ((histdata_t) 0); + FREE (hist->line); + FREE (hist->timestamp); + x = hist->data; + free (hist); + return (x); +} + /* 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. */ @@ -275,7 +340,7 @@ replace_history_entry (which, line, data) { HIST_ENTRY *temp, *old_value; - if (which >= history_length) + if (which < 0 || which >= history_length) return ((HIST_ENTRY *)NULL); temp = (HIST_ENTRY *)xmalloc (sizeof (HIST_ENTRY)); @@ -283,6 +348,7 @@ replace_history_entry (which, line, data) temp->line = savestring (line); temp->data = data; + temp->timestamp = savestring (old_value->timestamp); the_history[which] = temp; return (old_value); @@ -298,17 +364,15 @@ remove_history (which) HIST_ENTRY *return_value; register int i; - if (which >= history_length || !history_length) - return_value = (HIST_ENTRY *)NULL; - else - { - return_value = the_history[which]; + if (which < 0 || which >= history_length || history_length == 0 || the_history == 0) + return ((HIST_ENTRY *)NULL); - for (i = which; i < history_length; i++) - the_history[i] = the_history[i + 1]; + return_value = the_history[which]; - history_length--; - } + for (i = which; i < history_length; i++) + the_history[i] = the_history[i + 1]; + + history_length--; return (return_value); } @@ -327,10 +391,7 @@ stifle_history (max) { /* This loses because we cannot free the data. */ for (i = 0, j = history_length - max; i < j; i++) - { - free (the_history[i]->line); - free (the_history[i]); - } + free_history_entry (the_history[i]); history_base = i; for (j = 0, i = history_length - max; j < max; i++, j++) @@ -372,8 +433,7 @@ clear_history () /* This loses because we cannot free the data. */ for (i = 0; i < history_length; i++) { - free (the_history[i]->line); - free (the_history[i]); + free_history_entry (the_history[i]); the_history[i] = (HIST_ENTRY *)NULL; } -- cgit v1.2.1