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| author | Michael Brown <mcb30@ipxe.org> | 2021-04-23 12:27:57 +0100 |
|---|---|---|
| committer | Michael Brown <mcb30@ipxe.org> | 2021-04-23 12:27:57 +0100 |
| commit | b2501dd1221d7910e7aa896ae8b927bb63b77d3a (patch) | |
| tree | cefdf056fabb0bb4c7a2fd7a007096b65ce10c04 | |
| parent | 56f7d44fde1d6ac196d115cc7dddd58e7ec098fa (diff) | |
| download | ipxe-b2501dd1221d7910e7aa896ae8b927bb63b77d3a.zip ipxe-b2501dd1221d7910e7aa896ae8b927bb63b77d3a.tar.gz ipxe-b2501dd1221d7910e7aa896ae8b927bb63b77d3a.tar.bz2 | |
[readline] Add an optional timeout to readline_history()
Signed-off-by: Michael Brown <mcb30@ipxe.org>
| -rw-r--r-- | src/hci/commands/nvo_cmd.c | 2 | ||||
| -rw-r--r-- | src/hci/readline.c | 17 | ||||
| -rw-r--r-- | src/hci/shell.c | 2 | ||||
| -rw-r--r-- | src/include/readline/readline.h | 3 |
4 files changed, 18 insertions, 6 deletions
diff --git a/src/hci/commands/nvo_cmd.c b/src/hci/commands/nvo_cmd.c index ac0d606..88e9d47 100644 --- a/src/hci/commands/nvo_cmd.c +++ b/src/hci/commands/nvo_cmd.c @@ -241,7 +241,7 @@ static int read_value ( struct named_setting *setting, char **args __unused, NULL, &setting->setting, &existing ); /* Read new value */ - if ( ( rc = readline_history ( NULL, existing, NULL, value ) ) != 0 ) + if ( ( rc = readline_history ( NULL, existing, NULL, 0, value ) ) != 0 ) goto err_readline; err_readline: diff --git a/src/hci/readline.c b/src/hci/readline.c index 83a2e0b..852c450 100644 --- a/src/hci/readline.c +++ b/src/hci/readline.c @@ -248,6 +248,7 @@ void history_free ( struct readline_history *history ) { * @v prompt Prompt string * @v prefill Prefill string, or NULL for no prefill * @v history History buffer, or NULL for no history + * @v timeout Timeout period, in ticks (0=indefinite) * @ret line Line read from console (excluding terminating newline) * @ret rc Return status code * @@ -255,7 +256,8 @@ void history_free ( struct readline_history *history ) { * eventually call free() to release the storage. */ int readline_history ( const char *prompt, const char *prefill, - struct readline_history *history, char **line ) { + struct readline_history *history, unsigned long timeout, + char **line ) { char buf[READLINE_MAX]; struct edit_string string; int key; @@ -285,8 +287,17 @@ int readline_history ( const char *prompt, const char *prefill, } while ( 1 ) { + + /* Get keypress */ + key = getkey ( timeout ); + if ( key < 0 ) { + rc = -ETIMEDOUT; + goto done; + } + timeout = 0; + /* Handle keypress */ - key = edit_string ( &string, getkey ( 0 ) ); + key = edit_string ( &string, key ); sync_console ( &string ); move_by = 0; switch ( key ) { @@ -342,6 +353,6 @@ int readline_history ( const char *prompt, const char *prefill, char * readline ( const char *prompt ) { char *line; - readline_history ( prompt, NULL, NULL, &line ); + readline_history ( prompt, NULL, NULL, 0, &line ); return line; } diff --git a/src/hci/shell.c b/src/hci/shell.c index 276eb35..8ecf73a 100644 --- a/src/hci/shell.c +++ b/src/hci/shell.c @@ -91,7 +91,7 @@ int shell ( void ) { /* Read and execute commands */ do { - readline_history ( shell_prompt, NULL, &history, &line ); + readline_history ( shell_prompt, NULL, &history, 0, &line ); if ( line ) { rc = system ( line ); free ( line ); diff --git a/src/include/readline/readline.h b/src/include/readline/readline.h index afafbbd..3caf28b 100644 --- a/src/include/readline/readline.h +++ b/src/include/readline/readline.h @@ -51,7 +51,8 @@ struct readline_history { extern void history_free ( struct readline_history *history ); extern int readline_history ( const char *prompt, const char *prefill, - struct readline_history *history, char **line ); + struct readline_history *history, + unsigned long timeout, char **line ); extern char * __malloc readline ( const char *prompt ); #endif /* _READLINE_H */ |