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config: add support for enumerated types with string labels. 

Signed-off-by: Richard Cochran <richardcochran@gmail.com>
master
Richard Cochran 2015-08-15 20:49:52 +02:00
parent 1080826d6c
commit 5d184839d0
1 changed files with 33 additions and 1 deletions
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34
config.c
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@ -37,6 +37,12 @@ enum config_section {
enum config_type {
CFG_TYPE_INT,
CFG_TYPE_DOUBLE,
CFG_TYPE_ENUM,
};
struct config_enum {
const char *label;
int value;
};
typedef union {
@ -53,6 +59,7 @@ typedef union {
struct config_item {
char label[CONFIG_LABEL_SIZE];
enum config_type type;
struct config_enum *tab;
unsigned int flags;
any_t val;
any_t min;
@ -69,6 +76,13 @@ struct config_item {
.min.d = _min, \
.max.d = _max, \
}
#define CONFIG_ITEM_ENUM(_label, _port, _default, _table) { \
.label = _label, \
.type = CFG_TYPE_ENUM, \
.flags = _port ? CFG_ITEM_PORT : 0, \
.tab = _table, \
.val.i = _default, \
}
#define CONFIG_ITEM_INT(_label, _port, _default, _min, _max) { \
.label = _label, \
.type = CFG_TYPE_INT, \
@ -81,12 +95,18 @@ struct config_item {
#define GLOB_ITEM_DBL(label, _default, min, max) \
CONFIG_ITEM_DBL(label, 0, _default, min, max)
#define GLOB_ITEM_ENU(label, _default, table) \
CONFIG_ITEM_ENUM(label, 0, _default, table)
#define GLOB_ITEM_INT(label, _default, min, max) \
CONFIG_ITEM_INT(label, 0, _default, min, max)
#define PORT_ITEM_DBL(label, _default, min, max) \
CONFIG_ITEM_DBL(label, 1, _default, min, max)
#define PORT_ITEM_ENU(label, _default, table) \
CONFIG_ITEM_ENUM(label, 1, _default, table)
#define PORT_ITEM_INT(label, _default, min, max) \
CONFIG_ITEM_INT(label, 1, _default, min, max)
@ -233,8 +253,9 @@ static enum parser_result parse_item(struct config *cfg,
const char *option,
const char *value)
{
struct config_item *cgi, *dst;
enum parser_result r = BAD_VALUE;
struct config_item *cgi, *dst;
struct config_enum *cte;
double df;
int val;
@ -251,6 +272,14 @@ static enum parser_result parse_item(struct config *cfg,
case CFG_TYPE_DOUBLE:
r = get_ranged_double(value, &df, cgi->min.d, cgi->max.d);
break;
case CFG_TYPE_ENUM:
for (cte = cgi->tab; cte->label; cte++) {
if (!strcasecmp(cte->label, value)) {
val = cte->value;
r = PARSED_OK;
break;
}
}
}
if (r != PARSED_OK) {
return r;
@ -278,6 +307,7 @@ static enum parser_result parse_item(struct config *cfg,
switch (dst->type) {
case CFG_TYPE_INT:
case CFG_TYPE_ENUM:
dst->val.i = val;
break;
case CFG_TYPE_DOUBLE:
@ -770,6 +800,7 @@ int config_get_int(struct config *cfg, const char *section, const char *option)
pr_err("bug: config option %s type mismatch!", option);
exit(-1);
case CFG_TYPE_INT:
case CFG_TYPE_ENUM:
break;
}
pr_debug("config item %s.%s is %d", section, option, ci->val.i);
@ -805,6 +836,7 @@ int config_set_section_int(struct config *cfg, const char *section,
pr_err("bug: config option %s type mismatch!", option);
return -1;
case CFG_TYPE_INT:
case CFG_TYPE_ENUM:
break;
}
if (!section) {