Bug Summary

File:fe-common/core/fe-help.c
Location:line 235, column 4
Description:Value stored to 'header' is never read

Annotated Source Code

1/*
2 fe-help.c : irssi
3
4 Copyright (C) 1999-2001 Timo Sirainen
5
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
10
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License along
17 with this program; if not, write to the Free Software Foundation, Inc.,
18 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
19*/
20
21#include "module.h"
22#include "signals.h"
23#include "commands.h"
24#include "levels.h"
25#include "misc.h"
26#include "settings.h"
27
28#include "printtext.h"
29#include "formats.h"
30
31static int commands_equal(COMMAND_REC *rec, COMMAND_REC *rec2)
32{
33 int i;
34
35 if (rec->category == NULL((void *)0) && rec2->category != NULL((void *)0))
36 return -1;
37 if (rec2->category == NULL((void *)0) && rec->category != NULL((void *)0))
38 return 1;
39 if (rec->category != NULL((void *)0) && rec2->category != NULL((void *)0)) {
40 i = strcmp(rec->category, rec2->category);
41 if (i != 0)
42 return i;
43 }
44
45 return strcmp(rec->cmd, rec2->cmd);
46}
47
48static int get_cmd_length(void *data)
49{
50 return strlen(((COMMAND_REC *) data)->cmd);
51}
52
53static void help_category(GSList *cmdlist, int items)
54{
55 WINDOW_REC *window;
56 TEXT_DEST_REC dest;
57 GString *str;
58 GSList *tmp;
59 int *columns, cols, rows, col, row, last_col_rows, max_width;
60 char *linebuf, *format, *stripped;
61
62 window = window_find_closest(NULL((void *)0), NULL((void *)0), MSGLEVEL_CLIENTCRAP);
63 max_width = window->width;
64
65 /* remove width of timestamp from max_width */
66 format_create_dest(&dest, NULL((void *)0), NULL((void *)0), MSGLEVEL_CLIENTCRAP, NULL((void *)0));
67 format = format_get_line_start(current_theme, &dest, time(NULL((void *)0)));
68 if (format != NULL((void *)0)) {
69 stripped = strip_codes(format);
70 max_width -= strlen(stripped);
71 g_free(stripped);
72 g_free(format);
73 }
74
75 /* calculate columns */
76 cols = get_max_column_count(cmdlist, get_cmd_length,
77 max_width, 6, 1, 3, &columns, &rows);
78 cmdlist = columns_sort_list(cmdlist, rows);
79
80 /* rows in last column */
81 last_col_rows = rows-(cols*rows-g_slist_length(cmdlist));
82 if (last_col_rows == 0)
83 last_col_rows = rows;
84
85 str = g_string_new(NULL((void *)0));
86 linebuf = g_malloc(max_width+1);
87
88 col = 0; row = 0;
89 for (tmp = cmdlist; tmp != NULL((void *)0); tmp = tmp->next) {
90 COMMAND_REC *rec = tmp->data;
91
92 memset(linebuf, ' ', columns[col]);
93 linebuf[columns[col]] = '\0';
94 memcpy(linebuf, rec->cmd, strlen(rec->cmd));
95 g_string_append(str, linebuf);
96
97 if (++col == cols) {
98 printtext(NULL((void *)0), NULL((void *)0),
99 MSGLEVEL_CLIENTCRAP, "%s", str->str);
100 g_string_truncate(str, 0);
101 col = 0; row++;
102
103 if (row == last_col_rows)
104 cols--;
105 }
106 }
107 if (str->len != 0)
108 printtext(NULL((void *)0), NULL((void *)0), MSGLEVEL_CLIENTCRAP, "%s", str->str);
109
110 g_slist_free(cmdlist);
111 g_string_free(str, TRUE(!(0)));
112 g_free(columns);
113 g_free(linebuf);
114}
115
116static int show_help_file(const char *file)
117{
118 const char *helppath;
119 char *path, **paths, **tmp;
120 GIOChannel *handle;
121 GString *buf;
122 gsize tpos;
123
124 helppath = settings_get_str("help_path");
125
126 paths = g_strsplit(helppath, ":", -1);
127
128 handle = NULL((void *)0);
129 for (tmp = paths; *tmp != NULL((void *)0); tmp++) {
130 /* helpdir/command or helpdir/category/command */
131 path = g_strdup_printf("%s/%s", *tmp, file);
132 handle = g_io_channel_new_file(path, "r", NULL((void *)0));
133 g_free(path);
134
135 if (handle != NULL((void *)0))
136 break;
137
138 }
139
140 g_strfreev(paths);
141
142 if (handle == NULL((void *)0))
143 return FALSE(0);
144
145 g_io_channel_set_encoding(handle, NULL((void *)0), NULL((void *)0));
146 buf = g_string_sized_new(512);
147 /* just print to screen whatever is in the file */
148 while (g_io_channel_read_line_string(handle, buf, &tpos, NULL((void *)0)) == G_IO_STATUS_NORMAL) {
149 buf->str[tpos] = '\0';
150 g_string_prepend(buf, "%|");
151 printtext_string(NULL((void *)0), NULL((void *)0), MSGLEVEL_CLIENTCRAP, buf->str);
152 }
153 g_string_free(buf, TRUE(!(0)));
154
155 g_io_channel_unref(handle);
156 return TRUE(!(0));
157}
158
159static void show_help(const char *data)
160{
161 COMMAND_REC *rec, *last;
162 GSList *tmp, *cmdlist;
163 int items, findlen;
164 int header, found, fullmatch;
165
166 g_return_if_fail(data != NULL)do{ if (data != ((void *)0)) { } else { g_return_if_fail_warning
(((gchar*) 0), __PRETTY_FUNCTION__, "data != NULL"); return;
}; }while (0);
167
168 /* sort the commands list */
169 commands = g_slist_sort(commands, (GCompareFunc) commands_equal);
170
171 /* print command, sort by category */
172 cmdlist = NULL((void *)0); last = NULL((void *)0); header = FALSE(0); fullmatch = FALSE(0);
173 items = 0; findlen = strlen(data); found = FALSE(0);
174 for (tmp = commands; tmp != NULL((void *)0); last = rec, tmp = tmp->next) {
175 rec = tmp->data;
176
177 if (last != NULL((void *)0) && rec->category != NULL((void *)0) &&
178 (last->category == NULL((void *)0) ||
179 strcmp(rec->category, last->category) != 0)) {
180 /* category changed */
181 if (items > 0) {
182 if (!header) {
183 printtext(NULL((void *)0), NULL((void *)0), MSGLEVEL_CLIENTCRAP, "Irssi commands:");
184 header = TRUE(!(0));
185 }
186 if (last->category != NULL((void *)0)) {
187 printtext(NULL((void *)0), NULL((void *)0), MSGLEVEL_CLIENTCRAP, "");
188 printtext(NULL((void *)0), NULL((void *)0), MSGLEVEL_CLIENTCRAP, "%s:", last->category);
189 }
190 help_category(cmdlist, items);
191 }
192
193 g_slist_free(cmdlist); cmdlist = NULL((void *)0);
194 items = 0;
195 }
196
197 if (last != NULL((void *)0) && g_strcasecmp(rec->cmd, last->cmd) == 0)
198 continue; /* don't display same command twice */
199
200 if ((int)strlen(rec->cmd) >= findlen &&
201 g_strncasecmp(rec->cmd, data, findlen) == 0) {
202 if (rec->cmd[findlen] == '\0') {
203 fullmatch = TRUE(!(0));
204 found = TRUE(!(0));
205 break;
206 }
207 else if (strchr(rec->cmd+findlen+1, ' ') == NULL((void *)0)) {
208 /* not a subcommand (and matches the query) */
209 items++;
210 cmdlist = g_slist_append(cmdlist, rec);
211 found = TRUE(!(0));
212 }
213 }
214 }
215
216 if ((!found || fullmatch) && !show_help_file(data)) {
217 printtext(NULL((void *)0), NULL((void *)0), MSGLEVEL_CLIENTCRAP,
218 "No help for %s", data);
219 }
220
221 if (*data != '\0' && data[strlen(data)-1] != ' ' &&
222 command_have_sub(data)) {
223 char *cmd;
224
225 cmd = g_strconcat(data, " ", NULL((void *)0));
226 show_help(cmd);
227 g_free(cmd);
228 }
229
230 if (items != 0) {
231 /* display the last category */
232 if (!header) {
233 printtext(NULL((void *)0), NULL((void *)0), MSGLEVEL_CLIENTCRAP,
234 "Irssi commands:");
235 header = TRUE(!(0));
Value stored to 'header' is never read
236 }
237
238 if (last->category != NULL((void *)0)) {
239 printtext(NULL((void *)0), NULL((void *)0), MSGLEVEL_CLIENTCRAP, "");
240 printtext(NULL((void *)0), NULL((void *)0), MSGLEVEL_CLIENTCRAP,
241 "%s:", last->category);
242 }
243 help_category(cmdlist, items);
244 g_slist_free(cmdlist);
245 }
246}
247
248/* SYNTAX: HELP [<command>] */
249static void cmd_help(const char *data)
250{
251 char *cmd;
252
253 cmd = g_ascii_strdown(data, -1);
254 g_strchomp(cmd);
255 show_help(cmd);
256 g_free(cmd);
257}
258
259void fe_help_init(void)
260{
261 settings_add_str("misc", "help_path", HELPDIR)settings_add_str_module("fe-common/core", "misc", "help_path"
, "/home/jilles/irssi/share/irssi/help");
262 command_bind("help", NULL, (SIGNAL_FUNC) cmd_help)command_bind_full("fe-common/core", 0, "help", -1, ((void *)0
), (SIGNAL_FUNC) cmd_help, ((void *)0));
263}
264
265void fe_help_deinit(void)
266{
267 command_unbind("help", (SIGNAL_FUNC) cmd_help)command_unbind_full("help", (SIGNAL_FUNC) cmd_help, ((void *)
0));
268}