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authorEric Andersen <andersen@codepoet.org>2000-07-04 06:22:18 +0000
committerEric Andersen <andersen@codepoet.org>2000-07-04 06:22:18 +0000
commit72965e3454ae254455c6d6ce69cf0d5af62dc2db (patch)
treefee30ee9bd09708b3a84e525d9c2ed144f51c7df /shell
parentb54833cde0dfde26ad7c2d3a6cda9d7ff2dfe9ba (diff)
downloadbusybox-72965e3454ae254455c6d6ce69cf0d5af62dc2db.tar.gz
Fixed a potential infinite loop. First delete any chars after the
cursor, then delete everything before it. Before this, we would just delete everything before the cursor and freak out if there were still chars left (i.e. stuff after the cursor). -Erik
Diffstat (limited to 'shell')
-rw-r--r--shell/cmdedit.c11
1 files changed, 10 insertions, 1 deletions
diff --git a/shell/cmdedit.c b/shell/cmdedit.c
index 5cd43ae2a..515685f55 100644
--- a/shell/cmdedit.c
+++ b/shell/cmdedit.c
@@ -143,6 +143,12 @@ void input_backspace(char* command, int outputFd, int *cursor, int *len)
{
int j = 0;
+/* Debug crap */
+//fprintf(stderr, "\nerik: len=%d, cursor=%d, strlen(command)='%d'\n", *len, *cursor, strlen(command));
+//xwrite(outputFd, command, *len);
+//*cursor = *len;
+
+
if (*cursor > 0) {
xwrite(outputFd, "\b \b", 3);
--*cursor;
@@ -534,7 +540,10 @@ extern void cmdedit_read_input(char* prompt, char command[BUFSIZ])
rewrite_line:
/* erase old command from command line */
len = strlen(command)-strlen(hp->s);
- while (len>0)
+
+ while (len>cursor)
+ input_delete(command, outputFd, cursor, &len);
+ while (cursor>0)
input_backspace(command, outputFd, &cursor, &len);
input_home(outputFd, &cursor);