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appletlib.c: prevent applet list overflowing screen

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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2009-05-19 18:01:42 +02:00
parent 5e61115ea4
commit 0149f02a72
1 changed files with 14 additions and 9 deletions
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23
libbb/appletlib.c
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@ -633,15 +633,14 @@ static int busybox_main(char **argv)
if (!argv[1]) {
/* Called without arguments */
const char *a;
unsigned col, output_width;
int col;
unsigned output_width;
help:
output_width = 80;
if (ENABLE_FEATURE_AUTOWIDTH) {
/* Obtain the terminal width */
get_terminal_width_height(0, &output_width, NULL);
}
/* leading tab and room to wrap */
output_width -= MAX_APPLET_NAME_LEN + 8;
dup2(1, 2);
full_write2_str(bb_banner); /* reuse const string... */
@ -661,17 +660,23 @@ static int busybox_main(char **argv)
"Currently defined functions:\n");
col = 0;
a = applet_names;
/* prevent last comma to be in the very last pos */
output_width--;
while (*a) {
int len;
if (col > output_width) {
int len2 = strlen(a) + 2;
if (col >= (int)output_width - len2) {
full_write2_str(",\n");
col = 0;
}
full_write2_str(col ? ", " : "\t");
if (col == 0) {
col = 6;
full_write2_str("\t");
} else {
full_write2_str(", ");
}
full_write2_str(a);
len = strlen(a);
col += len + 2;
a += len + 1;
col += len2;
a += len2 - 1;
}
full_write2_str("\n\n");
return 0;