--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/dav/davql.c Sat Aug 17 12:04:04 2013 +0200
@@ -0,0 +1,139 @@
+/*
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
+ *
+ * Copyright 2013 Olaf Wintermann. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "davql.h"
+#include "methods.h"
+#include "webdav.h"
+#include "utils.h"
+
+DavQuery dav_ql_parse(char *query, va_list ap) {
+ DavQuery davquery;
+ davquery.command = DAV_QUERY_ERROR;
+ davquery.command_data = NULL;
+ sstr_t q = sstr(query);
+ q = sstrtrim(q);
+
+ // get query command
+ sstr_t cmd;
+ cmd.ptr = NULL;
+ int i;
+ for(i=0;i<q.length;i++) {
+ if(q.ptr[i] == ' ') {
+ cmd = sstrsubsl(q, 0, i);
+ break;
+ }
+ }
+ if(!cmd.ptr) {
+ fprintf(stderr, "DQL syntax error\n");
+ return davquery;
+ }
+
+ cmd = sstrtrim(cmd);
+ q = sstrtrim(sstrsubs(q, i));
+ if(!sstrcmp(cmd, S("get"))) {
+ davquery.command = DAV_QUERY_GET;
+ davquery.command_data = dav_ql_parse_get(q, ap);
+ }
+
+ return davquery;
+}
+
+DavGetQuery* dav_ql_parse_get(sstr_t q, va_list ap) {
+ sstr_t property_query = q;
+ q = util_getsubstr_until_token(q, S("from"), &property_query);
+
+ sstr_t from_query = q;
+ sstr_t cond = util_getsubstr_until_token(q, S("where"), &from_query);
+
+ // insert variable values
+ UcxBuffer *fbuf = ucx_buffer_new(NULL, 128, UCX_BUFFER_AUTOEXTEND);
+ int var = 0;
+ for(int i=0;i<from_query.length;i++) {
+ char c = from_query.ptr[i];
+ if(c == '%') {
+ if(var) {
+ ucx_buffer_putc(fbuf, '%'); // previous '%'
+ } else {
+ var = 1;
+ }
+ } else if(var) {
+ switch(c) {
+ case 's': {
+ char *arg = va_arg(ap, char*);
+ ucx_buffer_puts(fbuf, arg);
+ break;
+ }
+ default: {
+ ucx_buffer_putc(fbuf, '%');
+ ucx_buffer_putc(fbuf, c);
+ }
+ }
+ var = 0;
+ } else {
+ ucx_buffer_putc(fbuf, c);
+ }
+ }
+
+ DavGetQuery *getquery = malloc(sizeof(DavGetQuery));
+ getquery->properties = sstrdup(property_query);
+ getquery->from = sstrn(fbuf->space, fbuf->pos);
+ // TODO: condition
+ return getquery;
+}
+
+void free_get_query(DavGetQuery *q) {
+ free(q->from.ptr);
+ free(q->properties.ptr);
+ free(q);
+}
+
+int parse_path_query(sstr_t query, char **path, int *depth) {
+ if(query.length == 1) {
+ if(query.ptr[0] == '/') {
+ *path = sstrdup(query).ptr;
+ *depth = 1;
+ return 0;
+ } else {
+ *path = NULL;
+ return 1;
+ }
+ }
+
+ if(query.ptr[query.length-1] == '*') {
+ *depth = -1;
+ *path = sstrdup(sstrsubsl(query, 0, query.length-1)).ptr;
+ } else {
+ *path = sstrdup(query).ptr;
+ *depth = 1;
+ }
+
+ return 0;
+}