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test/terminal_expect_send: warn on excess chars

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This patch adds a warning on the occurrence of overly long lines and
drops characters in this case.

Fixes #5108
This commit is contained in:
Norman Feske 2024-05-30 15:10:23 +02:00
parent 996b2fe79f
commit 00844efd2f
1 changed files with 12 additions and 5 deletions
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17
repos/os/src/test/terminal_expect_send/main.cc
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@ -34,14 +34,21 @@ struct Main
void handle_read_avail()
{
size_t num_bytes = terminal.read(read_buffer, sizeof(read_buffer));
size_t const num_bytes = terminal.read(read_buffer, sizeof(read_buffer));
for (size_t i = 0; i < num_bytes; i++) {
char const c = read_buffer[i];
/* copy over all characters other than line-end */
if (read_buffer[i] != '\n' &&
read_buffer[i] != '\r') {
line[line_idx++] = read_buffer[i];
if (c != '\n' && c != '\r') {
line[line_idx++] = c;
if (line_idx >= MAX_LINE_LENGTH) {
warning("dropping characters (maximum line length exceeded)");
line_idx = 0;
}
line[line_idx] = 0;
}
@ -52,7 +59,7 @@ struct Main
}
/* check for line end */
if (read_buffer[i] == '\n') {
if (c == '\n') {
if (verbose) log(Cstring(line));
line_idx = 0;
line[line_idx] = 0;