125 lines
2.8 KiB
C
125 lines
2.8 KiB
C
/* histexamp.c - history library example program. */
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/* Copyright (C) 1987-2009 Free Software Foundation, Inc.
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This file is part of the GNU Readline Library (Readline), a library for
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reading lines of text with interactive input and history editing.
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Readline is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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Readline is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Readline. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stdio.h>
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#ifdef READLINE_LIBRARY
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# include "history.h"
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#else
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# include <readline/history.h>
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#endif
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#include <string.h>
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main (argc, argv)
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int argc;
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char **argv;
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{
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char line[1024], *t;
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int len, done;
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line[0] = 0;
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done = 0;
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using_history ();
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while (!done)
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{
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printf ("history$ ");
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fflush (stdout);
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t = fgets (line, sizeof (line) - 1, stdin);
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if (t && *t)
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{
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len = strlen (t);
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if (t[len - 1] == '\n')
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t[len - 1] = '\0';
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}
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if (!t)
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strcpy (line, "quit");
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if (line[0])
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{
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char *expansion;
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int result;
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using_history ();
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result = history_expand (line, &expansion);
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if (result)
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fprintf (stderr, "%s\n", expansion);
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if (result < 0 || result == 2)
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{
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free (expansion);
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continue;
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}
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add_history (expansion);
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strncpy (line, expansion, sizeof (line) - 1);
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free (expansion);
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}
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if (strcmp (line, "quit") == 0)
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done = 1;
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else if (strcmp (line, "save") == 0)
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write_history ("history_file");
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else if (strcmp (line, "read") == 0)
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read_history ("history_file");
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else if (strcmp (line, "list") == 0)
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{
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register HIST_ENTRY **the_list;
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register int i;
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time_t tt;
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char timestr[128];
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the_list = history_list ();
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if (the_list)
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for (i = 0; the_list[i]; i++)
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{
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tt = history_get_time (the_list[i]);
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if (tt)
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strftime (timestr, sizeof (timestr), "%a %R", localtime(&tt));
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else
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strcpy (timestr, "??");
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printf ("%d: %s: %s\n", i + history_base, timestr, the_list[i]->line);
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}
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}
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else if (strncmp (line, "delete", 6) == 0)
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{
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int which;
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if ((sscanf (line + 6, "%d", &which)) == 1)
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{
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HIST_ENTRY *entry = remove_history (which);
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if (!entry)
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fprintf (stderr, "No such entry %d\n", which);
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else
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{
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free (entry->line);
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free (entry);
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}
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}
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else
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{
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fprintf (stderr, "non-numeric arg given to `delete'\n");
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}
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}
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}
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}
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