Mercurial > hg > nginx-vendor-1-0
diff src/http/ngx_http_script.c @ 56:3050baa54a26 NGINX_0_1_28
nginx 0.1.28
*) Bugfix: nginx hogs CPU while proxying the huge files.
*) Bugfix: nginx could not be built by gcc 4.0 on Linux.
author | Igor Sysoev <http://sysoev.ru> |
---|---|
date | Fri, 08 Apr 2005 00:00:00 +0400 |
parents | |
children | b55cbf18157e |
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new file mode 100644 --- /dev/null +++ b/src/http/ngx_http_script.c @@ -0,0 +1,194 @@ + +/* + * Copyright (C) Igor Sysoev + */ + + +#include <ngx_config.h> +#include <ngx_core.h> +#include <ngx_http.h> + + +ngx_int_t +ngx_http_script_compile_lite(ngx_conf_t *cf, ngx_array_t *sources, + ngx_array_t **lengths, ngx_array_t **values, + ngx_http_script_compile_lite_start_pt start, + ngx_http_script_compile_lite_end_pt end) +{ + uintptr_t *code; + ngx_uint_t i; + ngx_table_elt_t *src; + ngx_http_variable_t *var; + ngx_http_script_var_code_t *var_code; + + if (sources->nelts == 0) { + return NGX_OK; + } + + if (*lengths == NULL) { + *lengths = ngx_array_create(cf->pool, 64, 1); + if (*lengths == NULL) { + return NGX_ERROR; + } + } + + if (*values == NULL) { + *values = ngx_array_create(cf->pool, 256, 1); + if (*values == NULL) { + return NGX_ERROR; + } + } + + src = sources->elts; + for (i = 0; i < sources->nelts; i++) { + + if (src[i].value.data[0] == '$') { + if (start(&src[i], *lengths, *values, 0) != NGX_OK) { + return NGX_ERROR; + } + + src[i].value.len--; + src[i].value.data++; + + var = ngx_http_add_variable(cf, &src[i].value, 0); + + if (var == NULL) { + return NGX_ERROR; + } + + var_code = ngx_array_push_n(*lengths, + sizeof(ngx_http_script_var_code_t)); + if (var_code == NULL) { + return NGX_ERROR; + } + + var_code->code = (ngx_http_script_code_pt) + ngx_http_script_copy_var_len; + var_code->index = var->index; + + + var_code = ngx_array_push_n(*values, + sizeof(ngx_http_script_var_code_t)); + if (var_code == NULL) { + return NGX_ERROR; + } + + var_code->code = ngx_http_script_copy_var; + var_code->index = var->index; + + + if (end(*lengths, *values) != NGX_OK) { + return NGX_ERROR; + } + + continue; + } + + if (start(&src[i], *lengths, *values, 1) != NGX_OK) { + return NGX_ERROR; + } + } + + code = ngx_array_push_n(*lengths, sizeof(uintptr_t)); + if (code == NULL) { + return NGX_ERROR; + } + + *code = (uintptr_t) NULL; + + code = ngx_array_push_n(*values, sizeof(uintptr_t)); + if (code == NULL) { + return NGX_ERROR; + } + + *code = (uintptr_t) NULL; + + return NGX_OK; +} + + +#if 0 + +static void * +ngx_http_script_start_code(ngx_pool_t *pool, ngx_array_t **codes, size_t size) +{ + if (*codes == NULL) { + *codes = ngx_array_create(pool, 256, 1); + if (*codes == NULL) { + return NULL; + } + } + + return ngx_array_push_n(*codes, size); +} + +#endif + + +size_t +ngx_http_script_copy_len(ngx_http_script_engine_t *e) +{ + ngx_http_script_copy_code_t *code; + + code = (ngx_http_script_copy_code_t *) e->lite.ip; + + e->lite.ip += sizeof(ngx_http_script_copy_code_t); + + return code->len; +} + + +void +ngx_http_script_copy(ngx_http_script_engine_t *e) +{ + ngx_http_script_copy_code_t *code; + + code = (ngx_http_script_copy_code_t *) e->lite.ip; + + e->lite.pos = ngx_cpymem(e->lite.pos, + e->lite.ip + sizeof(ngx_http_script_copy_code_t), + code->len); + + e->lite.ip += sizeof(ngx_http_script_copy_code_t) + + ((code->len + sizeof(uintptr_t) - 1) & ~(sizeof(uintptr_t) - 1)); +} + + +size_t +ngx_http_script_copy_var_len(ngx_http_script_engine_t *e) +{ + ngx_http_variable_value_t *value; + ngx_http_script_var_code_t *code; + + code = (ngx_http_script_var_code_t *) e->lite.ip; + + e->lite.ip += sizeof(ngx_http_script_var_code_t); + + value = ngx_http_get_indexed_variable(e->lite.request, code->index); + + if (value == NULL || value == NGX_HTTP_VARIABLE_NOT_FOUND) { + return 0; + } + + return value->text.len; +} + + +void +ngx_http_script_copy_var(ngx_http_script_engine_t *e) +{ + ngx_http_variable_value_t *value; + ngx_http_script_var_code_t *code; + + code = (ngx_http_script_var_code_t *) e->lite.ip; + + e->lite.ip += sizeof(ngx_http_script_var_code_t); + + value = ngx_http_get_indexed_variable(e->lite.request, code->index); + + if (value == NULL || value == NGX_HTTP_VARIABLE_NOT_FOUND) { + return; + } + + e->lite.pos = ngx_cpymem(e->lite.pos, value->text.data, value->text.len); +}