Annotation of embedaddon/readline/examples/histexamp.c, revision 1.1.1.1
1.1 misho 1: /* histexamp.c - history library example program. */
2:
3: /* Copyright (C) 1987-2009 Free Software Foundation, Inc.
4:
5: This file is part of the GNU Readline Library (Readline), a library for
6: reading lines of text with interactive input and history editing.
7:
8: Readline is free software: you can redistribute it and/or modify
9: it under the terms of the GNU General Public License as published by
10: the Free Software Foundation, either version 3 of the License, or
11: (at your option) any later version.
12:
13: Readline is distributed in the hope that it will be useful,
14: but WITHOUT ANY WARRANTY; without even the implied warranty of
15: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16: GNU General Public License for more details.
17:
18: You should have received a copy of the GNU General Public License
19: along with Readline. If not, see <http://www.gnu.org/licenses/>.
20: */
21:
22: #include <stdio.h>
23:
24: #ifdef READLINE_LIBRARY
25: # include "history.h"
26: #else
27: # include <readline/history.h>
28: #endif
29:
30: #include <string.h>
31:
32: main (argc, argv)
33: int argc;
34: char **argv;
35: {
36: char line[1024], *t;
37: int len, done;
38:
39: line[0] = 0;
40: done = 0;
41:
42: using_history ();
43: while (!done)
44: {
45: printf ("history$ ");
46: fflush (stdout);
47: t = fgets (line, sizeof (line) - 1, stdin);
48: if (t && *t)
49: {
50: len = strlen (t);
51: if (t[len - 1] == '\n')
52: t[len - 1] = '\0';
53: }
54:
55: if (!t)
56: strcpy (line, "quit");
57:
58: if (line[0])
59: {
60: char *expansion;
61: int result;
62:
63: using_history ();
64:
65: result = history_expand (line, &expansion);
66: if (result)
67: fprintf (stderr, "%s\n", expansion);
68:
69: if (result < 0 || result == 2)
70: {
71: free (expansion);
72: continue;
73: }
74:
75: add_history (expansion);
76: strncpy (line, expansion, sizeof (line) - 1);
77: free (expansion);
78: }
79:
80: if (strcmp (line, "quit") == 0)
81: done = 1;
82: else if (strcmp (line, "save") == 0)
83: write_history ("history_file");
84: else if (strcmp (line, "read") == 0)
85: read_history ("history_file");
86: else if (strcmp (line, "list") == 0)
87: {
88: register HIST_ENTRY **the_list;
89: register int i;
90: time_t tt;
91: char timestr[128];
92:
93: the_list = history_list ();
94: if (the_list)
95: for (i = 0; the_list[i]; i++)
96: {
97: tt = history_get_time (the_list[i]);
98: if (tt)
99: strftime (timestr, sizeof (timestr), "%a %R", localtime(&tt));
100: else
101: strcpy (timestr, "??");
102: printf ("%d: %s: %s\n", i + history_base, timestr, the_list[i]->line);
103: }
104: }
105: else if (strncmp (line, "delete", 6) == 0)
106: {
107: int which;
108: if ((sscanf (line + 6, "%d", &which)) == 1)
109: {
110: HIST_ENTRY *entry = remove_history (which);
111: if (!entry)
112: fprintf (stderr, "No such entry %d\n", which);
113: else
114: {
115: free (entry->line);
116: free (entry);
117: }
118: }
119: else
120: {
121: fprintf (stderr, "non-numeric arg given to `delete'\n");
122: }
123: }
124: }
125: }
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