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cli: Parsing. Allow true/false parameter for boolean options.

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Allow NOTMUCH_OPT_BOOLEAN to take a true or false parameter.  In
particular it allows the user to turn off a boolean option with
--option=false.
This commit is contained in:
Mark Walters 2012-03-10 11:05:32 +00:00 committed by David Bremner
parent db97cb5b65
commit b3e4417897
1 changed files with 26 additions and 8 deletions
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34
command-line-arguments.c
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@ -28,6 +28,24 @@ _process_keyword_arg (const notmuch_opt_desc_t *arg_desc, const char *arg_str) {
return FALSE;
}
static notmuch_bool_t
_process_boolean_arg (const notmuch_opt_desc_t *arg_desc, char next, const char *arg_str) {
if (next == 0) {
*((notmuch_bool_t *)arg_desc->output_var) = TRUE;
return TRUE;
}
if (strcmp (arg_str, "false") == 0) {
*((notmuch_bool_t *)arg_desc->output_var) = FALSE;
return TRUE;
}
if (strcmp (arg_str, "true") == 0) {
*((notmuch_bool_t *)arg_desc->output_var) = TRUE;
return TRUE;
}
return FALSE;
}
/*
Search for the {pos_arg_index}th position argument, return FALSE if
that does not exist.
@ -76,14 +94,15 @@ parse_option (const char *arg,
char *endptr;
/* Everything but boolean arguments (switches) needs a
* delimiter, and a non-zero length value
* delimiter, and a non-zero length value. Boolean
* arguments may take an optional =true or =false value.
*/
if (try->opt_type != NOTMUCH_OPT_BOOLEAN) {
if (next != '=' && next != ':') return FALSE;
if (value[0] == 0) return FALSE;
if (next != '=' && next != ':' && next != 0) return FALSE;
if (next == 0) {
if (try->opt_type != NOTMUCH_OPT_BOOLEAN)
return FALSE;
} else {
if (next != 0) return FALSE;
if (value[0] == 0) return FALSE;
}
if (try->output_var == NULL)
@ -94,8 +113,7 @@ parse_option (const char *arg,
return _process_keyword_arg (try, value);
break;
case NOTMUCH_OPT_BOOLEAN:
*((notmuch_bool_t *)try->output_var) = TRUE;
return TRUE;
return _process_boolean_arg (try, next, value);
break;
case NOTMUCH_OPT_INT:
*((int *)try->output_var) = strtol (value, &endptr, 10);