[nginx] Use NGX_MAX_PATH_LEVEL where appropriate.

[Ruslan Ermilov]

details:   http://hg.nginx.org/nginx/rev/8bf484eef9ab
branches:  
changeset: 6617:8bf484eef9ab
user:      Ruslan Ermilov <ru at nginx.com>
date:      Wed Jul 06 13:22:29 2016 +0300
description:
Use NGX_MAX_PATH_LEVEL where appropriate.

The macro was unused since 0.7.44.

diffstat:

 src/core/ngx_file.c            |  19 +++++++++----------
 src/core/ngx_file.h            |   4 ++--
 src/http/ngx_http_file_cache.c |  10 +++++-----
 3 files changed, 16 insertions(+), 17 deletions(-)

diffs (126 lines):

diff -r 82b0cd4a0324 -r 8bf484eef9ab src/core/ngx_file.c
--- a/src/core/ngx_file.c	Wed Jul 06 13:10:06 2016 +0300
+++ b/src/core/ngx_file.c	Wed Jul 06 13:22:29 2016 +0300
@@ -225,7 +225,7 @@ ngx_create_hashed_filename(ngx_path_t *p
 
     file[path->name.len + path->len]  = '/';
 
-    for (n = 0; n < 3; n++) {
+    for (n = 0; n < NGX_MAX_PATH_LEVEL; n++) {
         level = path->level[n];
 
         if (level == 0) {
@@ -249,7 +249,7 @@ ngx_create_path(ngx_file_t *file, ngx_pa
 
     pos = path->name.len;
 
-    for (i = 0; i < 3; i++) {
+    for (i = 0; i < NGX_MAX_PATH_LEVEL; i++) {
         if (path->level[i] == 0) {
             break;
         }
@@ -399,6 +399,8 @@ char *
 ngx_conf_merge_path_value(ngx_conf_t *cf, ngx_path_t **path, ngx_path_t *prev,
     ngx_path_init_t *init)
 {
+    ngx_uint_t  i;
+
     if (*path) {
         return NGX_CONF_OK;
     }
@@ -419,13 +421,10 @@ ngx_conf_merge_path_value(ngx_conf_t *cf
         return NGX_CONF_ERROR;
     }
 
-    (*path)->level[0] = init->level[0];
-    (*path)->level[1] = init->level[1];
-    (*path)->level[2] = init->level[2];
-
-    (*path)->len = init->level[0] + (init->level[0] ? 1 : 0)
-                   + init->level[1] + (init->level[1] ? 1 : 0)
-                   + init->level[2] + (init->level[2] ? 1 : 0);
+    for (i = 0; i < NGX_MAX_PATH_LEVEL; i++) {
+        (*path)->level[i] = init->level[i];
+        (*path)->len += init->level[i] + (init->level[i] ? 1 : 0);
+    }
 
     if (ngx_add_path(cf, path) != NGX_OK) {
         return NGX_CONF_ERROR;
@@ -518,7 +517,7 @@ ngx_add_path(ngx_conf_t *cf, ngx_path_t 
                 return NGX_ERROR;
             }
 
-            for (n = 0; n < 3; n++) {
+            for (n = 0; n < NGX_MAX_PATH_LEVEL; n++) {
                 if (p[i]->level[n] != path->level[n]) {
                     if (path->conf_file == NULL) {
                         if (p[i]->conf_file == NULL) {
diff -r 82b0cd4a0324 -r 8bf484eef9ab src/core/ngx_file.h
--- a/src/core/ngx_file.h	Wed Jul 06 13:10:06 2016 +0300
+++ b/src/core/ngx_file.h	Wed Jul 06 13:22:29 2016 +0300
@@ -49,7 +49,7 @@ typedef void (*ngx_path_loader_pt) (void
 typedef struct {
     ngx_str_t                  name;
     size_t                     len;
-    size_t                     level[3];
+    size_t                     level[NGX_MAX_PATH_LEVEL];
 
     ngx_path_manager_pt        manager;
     ngx_path_loader_pt         loader;
@@ -62,7 +62,7 @@ typedef struct {
 
 typedef struct {
     ngx_str_t                  name;
-    size_t                     level[3];
+    size_t                     level[NGX_MAX_PATH_LEVEL];
 } ngx_path_init_t;
 
 
diff -r 82b0cd4a0324 -r 8bf484eef9ab src/http/ngx_http_file_cache.c
--- a/src/http/ngx_http_file_cache.c	Wed Jul 06 13:10:06 2016 +0300
+++ b/src/http/ngx_http_file_cache.c	Wed Jul 06 13:22:29 2016 +0300
@@ -101,7 +101,7 @@ ngx_http_file_cache_init(ngx_shm_zone_t 
             return NGX_ERROR;
         }
 
-        for (n = 0; n < 3; n++) {
+        for (n = 0; n < NGX_MAX_PATH_LEVEL; n++) {
             if (cache->path->level[n] != ocache->path->level[n]) {
                 ngx_log_error(NGX_LOG_EMERG, shm_zone->shm.log, 0,
                               "cache \"%V\" had previously different levels",
@@ -2257,7 +2257,7 @@ ngx_http_file_cache_set_slot(ngx_conf_t 
             p = value[i].data + 7;
             last = value[i].data + value[i].len;
 
-            for (n = 0; n < 3 && p < last; n++) {
+            for (n = 0; n < NGX_MAX_PATH_LEVEL && p < last; n++) {
 
                 if (*p > '0' && *p < '3') {
 
@@ -2268,7 +2268,7 @@ ngx_http_file_cache_set_slot(ngx_conf_t 
                         break;
                     }
 
-                    if (*p++ == ':' && n < 2 && p != last) {
+                    if (*p++ == ':' && n < NGX_MAX_PATH_LEVEL - 1 && p < last) {
                         continue;
                     }
 
@@ -2278,7 +2278,7 @@ ngx_http_file_cache_set_slot(ngx_conf_t 
                 goto invalid_levels;
             }
 
-            if (cache->path->len < 10 + 3) {
+            if (cache->path->len < 10 + NGX_MAX_PATH_LEVEL) {
                 continue;
             }
 
@@ -2450,7 +2450,7 @@ ngx_http_file_cache_set_slot(ngx_conf_t 
         ngx_memcpy(p, "/temp", sizeof("/temp"));
 
         ngx_memcpy(&cache->temp_path->level, &cache->path->level,
-                   3 * sizeof(size_t));
+                   NGX_MAX_PATH_LEVEL * sizeof(size_t));
 
         cache->temp_path->len = cache->path->len;
         cache->temp_path->conf_file = cf->conf_file->file.name.data;