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| | #include <assert.h>
#include <string.h>
#include <stdio.h>
#include "error_util.h"
#include "notmuch-opts.h"
/*
Search the list of keywords for a given argument, assigning the
output variable to the corresponding value. Return FALSE if nothing
matches.
*/
static notmuch_bool_t
_process_keyword_arg (const notmuch_opt_desc_t *arg_desc, const char *arg_str) {
if (arg_str[0] != ':' && arg_str[0] != '=') {
return FALSE;
}
/* skip delimiter */
arg_str++;
notmuch_keyword_t *keywords = arg_desc->keywords;
while (keywords->name) {
if (strcmp (arg_str, keywords->name) == 0) {
if (arg_desc->output_var) {
*((int *)arg_desc->output_var) = keywords->value;
}
return TRUE;
}
keywords++;
}
fprintf (stderr, "unknown keyword: %s\n", arg_str);
return FALSE;
}
/*
Search for the {pos_arg_index}th position argument, return FALSE if
that does not exist.
*/
notmuch_bool_t
parse_position_arg (const char *arg_str, int pos_arg_index, const notmuch_opt_desc_t *arg_desc) {
int pos_arg_counter = 0;
while (arg_desc->name){
if (arg_desc->opt_type == NOTMUCH_OPT_POSITION) {
if (pos_arg_counter == pos_arg_index) {
if (arg_desc->output_var) {
*((const char **)arg_desc->output_var) = arg_str;
}
return TRUE;
}
pos_arg_counter++;
}
arg_desc++;
}
return FALSE;
}
notmuch_bool_t
parse_option (const char *arg,
const notmuch_opt_desc_t *options){
assert(arg);
assert(options);
arg += 2;
const notmuch_opt_desc_t *try = options;
while (try->name) {
if (strncmp (arg, try->name, strlen(try->name)) == 0) {
switch (try->opt_type) {
case NOTMUCH_OPT_KEYWORD:
return _process_keyword_arg (try, arg+strlen(try->name));
break;
case NOTMUCH_OPT_BOOLEAN:
if (try->output_var)
*((notmuch_bool_t *)try->output_var) = TRUE;
return TRUE;
break;
case NOTMUCH_OPT_INT:
if (try->output_var)
*((int *)try->output_var) =
atol (arg + strlen (try->name) + 1);
return TRUE;
break;
case NOTMUCH_OPT_POSITION:
case NOTMUCH_OPT_NULL:
default:
INTERNAL_ERROR ("unknown or unhandled option type %d", try->opt_type);
/*UNREACHED*/
}
}
try++;
}
fprintf (stderr, "Unrecognized option: --%s\n", arg);
return FALSE;
}
int
notmuch_parse_args (int argc, char **argv, const notmuch_opt_desc_t *options, int opt_index){
int pos_arg_index = 0;
notmuch_bool_t more_args = TRUE;
while (more_args && opt_index < argc) {
if (strncmp (argv[opt_index],"--",2) != 0) {
more_args = parse_position_arg (argv[opt_index], pos_arg_index, options);
if (more_args) {
pos_arg_index++;
opt_index++;
}
} else {
if (strlen (argv[opt_index]) == 2)
return opt_index+1;
more_args = parse_option (argv[opt_index], options);
if (more_args) {
opt_index++;
} else {
opt_index = -1;
}
}
}
return opt_index;
}
|