Author: ru
Date: 2012-03-21 06:19:11 +0000 (Wed, 21 Mar 2012)
New Revision: 4548
URL: http://trac.nginx.org/nginx/changeset/4548/nginx

Log:
Minor ngx_http_headers_filter_module.c code cleanup.

- 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().


Modified:
trunk/src/http/modules/ngx_http_headers_filter_module.c

Modified: trunk/src/http/modules/ngx_http_headers_filter_module.c
===================================================================
--- trunk/src/http/modules/ngx_http_headers_filter_module.c 2012-03-19 14:57:29 UTC (rev 4547)
+++ trunk/src/http/modules/ngx_http_headers_filter_module.c 2012-03-21 06:19:11 UTC (rev 4548)
@@ -25,23 +25,25 @@

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 @@
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 @@
return NGX_ERROR;
}

- h->hash = hv->hash;
+ h->hash = 1;
h->key = hv->key;
h->value = *value;
}
@@ -366,16 +370,11 @@
{
ngx_table_elt_t *h, **old;

- if (hv->offset) {
- old = (ngx_table_elt_t **) ((char *) &r->headers_out + hv->offset);
+ old = (ngx_table_elt_t **) ((char *) &r->headers_out + hv->offset);

- } else {
- old = NULL;
- }
-
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 @@
}
}

- h->hash = hv->hash;
+ h->hash = 1;
h->key = hv->key;
h->value = *value;

@@ -420,7 +419,7 @@
* 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_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_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 @@
return NGX_CONF_ERROR;
}

- hv->hash = 1;
hv->key = value[1];
hv->handler = ngx_http_add_header;
hv->offset = 0;

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