--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/libidav/davqlexec.c Sat May 02 18:45:13 2015 +0200
@@ -0,0 +1,137 @@
+/*
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
+ *
+ * Copyright 2015 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 <string.h>
+
+#include <ucx/utils.h>
+
+#include "davqlexec.h"
+
+DavQLResult* dav_statement_exec(DavSession *sn, DavQLStatement *st, ...) {
+ va_list ap;
+ va_start(ap, st);
+ DavQLResult *result = dav_statement_execv(sn, st, ap);
+ va_end(ap);
+ return result;
+}
+
+DavQLResult* dav_statement_execv(DavSession *sn, DavQLStatement *st, va_list ap) {
+ DavQLResult *result = dav_session_malloc(sn, sizeof(DavQLResult));
+ result->result = NULL;
+ result->status = 1;
+
+ // make sure the statement was successfully parsed
+ if(st->type == DAVQL_ERROR) {
+ return result;
+ }
+
+ // get path string
+ davqlerror_t error;
+ UcxBuffer *path = dav_path_string(st->path, ap, &error);
+
+ if(st->type == DAVQL_GET) {
+ dav_exec_get(sn, st, path->space, ap);
+ } else {
+ // TODO
+ }
+
+ return result;
+}
+
+UcxBuffer* dav_path_string(sstr_t pathfmt, va_list ap, davqlerror_t *error) {
+ UcxBuffer *path = ucx_buffer_new(NULL, 128, UCX_BUFFER_AUTOEXTEND);
+
+ int placeholder = 0;
+ for(int i=0;i<pathfmt.length;i++) {
+ char c = pathfmt.ptr[i];
+ if(placeholder) {
+ if(c == '%') {
+ // no placeholder, %% transposes to %
+ ucx_buffer_putc(path, c);
+ } else {
+ // detect placeholder type and insert arg
+ int err = 0;
+ switch(c) {
+ case 's': {
+ char *arg = va_arg(ap, char*);
+ ucx_buffer_puts(path, arg);
+ break;
+ }
+ case 'd': {
+ int arg = va_arg(ap, int);
+ ucx_bprintf(path, "%d", arg);
+ break;
+ }
+ case 'u': {
+ unsigned int arg = va_arg(ap, unsigned int);
+ ucx_bprintf(path, "%u", arg);
+ break;
+ }
+ case 't': {
+ // time arguments doesn't make any sense in a path
+ *error = DAVQL_UNSUPPORTED_FORMATCHAR;
+ err = 1;
+ break;
+ }
+ default: {
+ *error = DAVQL_UNKNOWN_FORMATCHAR;
+ err = 1;
+ }
+ }
+ if(err) {
+ ucx_buffer_free(path);
+ return NULL;
+ }
+ }
+ placeholder = 0;
+ } else {
+ if(c == '%') {
+ placeholder = 1;
+ } else {
+ ucx_buffer_putc(path, c);
+ }
+ }
+ }
+ ucx_buffer_putc(path, '\0');
+ *error = DAVQL_OK;
+ return path;
+}
+
+void dav_exec_get(DavSession *sn, DavQLStatement *st, char* path, va_list ap) {
+ // execute a davql get statement
+
+ // TODO: get property list
+
+
+}
+
+int dav_eval_lexpr(DavResource *res, DavQLExpression *lexpr) {
+
+}