Mercurial > hg > nginx

comparison src/http/modules/ngx_http_sub_filter_module.c @ 6756:521f5aa6e8fb stable-1.10

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Sub filter: introduced the ngx_http_sub_match() function. No functional changes.
author Roman Arutyunyan <arut@nginx.com>
date Sat, 02 Jul 2016 15:59:52 +0300
parents f01ab2dbcfdc
children f379b32e4733
comparison
equal deleted inserted replaced
6755:e2f13011343e 6756:521f5aa6e8fb
82 82
83 static ngx_int_t ngx_http_sub_output(ngx_http_request_t *r, 83 static ngx_int_t ngx_http_sub_output(ngx_http_request_t *r,
84 ngx_http_sub_ctx_t *ctx); 84 ngx_http_sub_ctx_t *ctx);
85 static ngx_int_t ngx_http_sub_parse(ngx_http_request_t *r, 85 static ngx_int_t ngx_http_sub_parse(ngx_http_request_t *r,
86 ngx_http_sub_ctx_t *ctx); 86 ngx_http_sub_ctx_t *ctx);
87 static ngx_int_t ngx_http_sub_match(ngx_http_sub_ctx_t *ctx, ngx_int_t start,
88 ngx_str_t *m);
87 89
88 static char * ngx_http_sub_filter(ngx_conf_t *cf, ngx_command_t *cmd, 90 static char * ngx_http_sub_filter(ngx_conf_t *cf, ngx_command_t *cmd,
89 void *conf); 91 void *conf);
90 static void *ngx_http_sub_create_conf(ngx_conf_t *cf); 92 static void *ngx_http_sub_create_conf(ngx_conf_t *cf);
91 static char *ngx_http_sub_merge_conf(ngx_conf_t *cf, 93 static char *ngx_http_sub_merge_conf(ngx_conf_t *cf,
590 592
591 593
592 static ngx_int_t 594 static ngx_int_t
593 ngx_http_sub_parse(ngx_http_request_t *r, ngx_http_sub_ctx_t *ctx) 595 ngx_http_sub_parse(ngx_http_request_t *r, ngx_http_sub_ctx_t *ctx)
594 { 596 {
595 u_char *p, *last, *pat, *pat_end, c; 597 u_char *p, c;
596 ngx_str_t *m; 598 ngx_str_t *m;
597 ngx_int_t offset, start, next, end, len, rc; 599 ngx_int_t offset, start, next, end, len, rc;
598 ngx_uint_t shift, i, j; 600 ngx_uint_t shift, i, j;
599 ngx_http_sub_match_t *match; 601 ngx_http_sub_match_t *match;
600 ngx_http_sub_tables_t *tables; 602 ngx_http_sub_tables_t *tables;
639 goto next; 641 goto next;
640 } 642 }
641 643
642 m = &match[i].match; 644 m = &match[i].match;
643 645
644 pat = m->data; 646 rc = ngx_http_sub_match(ctx, start, m);
645 pat_end = m->data + m->len; 647
646 648 if (rc == NGX_DECLINED) {
647 if (start >= 0) { 649 goto next;
648 p = ctx->pos + start;
649
650 } else {
651 last = ctx->looked.data + ctx->looked.len;
652 p = last + start;
653
654 while (p < last && pat < pat_end) {
655 if (ngx_tolower(*p) != *pat) {
656 goto next;
657 }
658
659 p++;
660 pat++;
661 }
662
663 p = ctx->pos;
664 }
665
666 while (p < ctx->buf->last && pat < pat_end) {
667 if (ngx_tolower(*p) != *pat) {
668 goto next;
669 }
670
671 p++;
672 pat++;
673 } 650 }
674 651
675 ctx->index = i; 652 ctx->index = i;
676 653
677 if (pat != pat_end) { 654 if (rc == NGX_AGAIN) {
678 /* partial match */
679 goto again; 655 goto again;
680 } 656 }
681 657
682 ctx->offset = offset + (ngx_int_t) m->len; 658 ctx->offset = offset + (ngx_int_t) m->len;
683 next = start + (ngx_int_t) m->len; 659 next = start + (ngx_int_t) m->len;
726 702
727 ctx->pos += end; 703 ctx->pos += end;
728 ctx->offset -= end; 704 ctx->offset -= end;
729 705
730 return rc; 706 return rc;
707 }
708
709
710 static ngx_int_t
711 ngx_http_sub_match(ngx_http_sub_ctx_t *ctx, ngx_int_t start, ngx_str_t *m)
712 {
713 u_char *p, *last, *pat, *pat_end;
714
715 pat = m->data;
716 pat_end = m->data + m->len;
717
718 if (start >= 0) {
719 p = ctx->pos + start;
720
721 } else {
722 last = ctx->looked.data + ctx->looked.len;
723 p = last + start;
724
725 while (p < last && pat < pat_end) {
726 if (ngx_tolower(*p) != *pat) {
727 return NGX_DECLINED;
728 }
729
730 p++;
731 pat++;
732 }
733
734 p = ctx->pos;
735 }
736
737 while (p < ctx->buf->last && pat < pat_end) {
738 if (ngx_tolower(*p) != *pat) {
739 return NGX_DECLINED;
740 }
741
742 p++;
743 pat++;
744 }
745
746 if (pat != pat_end) {
747 /* partial match */
748 return NGX_AGAIN;
749 }
750
751 return NGX_OK;
731 } 752 }
732 753
733 754
734 static char * 755 static char *
735 ngx_http_sub_filter(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) 756 ngx_http_sub_filter(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)