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Minor ngx_http_headers_filter_module.c code cleanup.

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- Removed "hash" element from ngx_http_header_val_t which was always 1.
- Replaced NGX_HTTP_EXPIRES_* with ngx_http_expires_t enum type.
- Added prototype for ngx_http_add_header()
- Simplified ngx_http_set_last_modified().
This commit is contained in:
Ruslan Ermilov 2012-03-21 06:19:11 +00:00
parent acf6c79ac7
commit 89467caf43
1 changed files with 20 additions and 22 deletions
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42
src/http/modules/ngx_http_headers_filter_module.c
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@ -25,23 +25,25 @@ typedef struct {
struct ngx_http_header_val_s {
ngx_http_complex_value_t value;
ngx_uint_t hash;
ngx_str_t key;
ngx_http_set_header_pt handler;
ngx_uint_t offset;
};
#define NGX_HTTP_EXPIRES_OFF 0
#define NGX_HTTP_EXPIRES_EPOCH 1
#define NGX_HTTP_EXPIRES_MAX 2
#define NGX_HTTP_EXPIRES_ACCESS 3
#define NGX_HTTP_EXPIRES_MODIFIED 4
#define NGX_HTTP_EXPIRES_DAILY 5
typedef enum {
NGX_HTTP_EXPIRES_OFF,
NGX_HTTP_EXPIRES_EPOCH,
NGX_HTTP_EXPIRES_MAX,
NGX_HTTP_EXPIRES_ACCESS,
NGX_HTTP_EXPIRES_MODIFIED,
NGX_HTTP_EXPIRES_DAILY,
NGX_HTTP_EXPIRES_UNSET
} ngx_http_expires_t;
typedef struct {
ngx_uint_t expires;
ngx_http_expires_t expires;
time_t expires_time;
ngx_array_t *headers;
} ngx_http_headers_conf_t;
@ -51,6 +53,8 @@ static ngx_int_t ngx_http_set_expires(ngx_http_request_t *r,
ngx_http_headers_conf_t *conf);
static ngx_int_t ngx_http_add_cache_control(ngx_http_request_t *r,
ngx_http_header_val_t *hv, ngx_str_t *value);
static ngx_int_t ngx_http_add_header(ngx_http_request_t *r,
ngx_http_header_val_t *hv, ngx_str_t *value);
static ngx_int_t ngx_http_set_last_modified(ngx_http_request_t *r,
ngx_http_header_val_t *hv, ngx_str_t *value);
@ -313,7 +317,7 @@ ngx_http_add_header(ngx_http_request_t *r, ngx_http_header_val_t *hv,
return NGX_ERROR;
}
h->hash = hv->hash;
h->hash = 1;
h->key = hv->key;
h->value = *value;
}
@ -366,16 +370,11 @@ ngx_http_set_last_modified(ngx_http_request_t *r, ngx_http_header_val_t *hv,
{
ngx_table_elt_t *h, **old;
if (hv->offset) {
old = (ngx_table_elt_t **) ((char *) &r->headers_out + hv->offset);
} else {
old = NULL;
}
old = (ngx_table_elt_t **) ((char *) &r->headers_out + hv->offset);
r->headers_out.last_modified_time = -1;
if (old == NULL || *old == NULL) {
if (*old == NULL) {
if (value->len == 0) {
return NGX_OK;
@ -395,7 +394,7 @@ ngx_http_set_last_modified(ngx_http_request_t *r, ngx_http_header_val_t *hv,
}
}
h->hash = hv->hash;
h->hash = 1;
h->key = hv->key;
h->value = *value;
@ -420,7 +419,7 @@ ngx_http_headers_create_conf(ngx_conf_t *cf)
* conf->expires_time = 0;
*/
conf->expires = NGX_CONF_UNSET_UINT;
conf->expires = NGX_HTTP_EXPIRES_UNSET;
return conf;
}
@ -432,11 +431,11 @@ ngx_http_headers_merge_conf(ngx_conf_t *cf, void *parent, void *child)
ngx_http_headers_conf_t *prev = parent;
ngx_http_headers_conf_t *conf = child;
if (conf->expires == NGX_CONF_UNSET_UINT) {
if (conf->expires == NGX_HTTP_EXPIRES_UNSET) {
conf->expires = prev->expires;
conf->expires_time = prev->expires_time;
if (conf->expires == NGX_CONF_UNSET_UINT) {
if (conf->expires == NGX_HTTP_EXPIRES_UNSET) {
conf->expires = NGX_HTTP_EXPIRES_OFF;
}
}
@ -467,7 +466,7 @@ ngx_http_headers_expires(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
ngx_uint_t minus, n;
ngx_str_t *value;
if (hcf->expires != NGX_CONF_UNSET_UINT) {
if (hcf->expires != NGX_HTTP_EXPIRES_UNSET) {
return "is duplicate";
}
@ -576,7 +575,6 @@ ngx_http_headers_add(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
return NGX_CONF_ERROR;
}
hv->hash = 1;
hv->key = value[1];
hv->handler = ngx_http_add_header;
hv->offset = 0;