Sat, 17 Aug 2013 12:04:04 +0200
new dav_query function
/* * 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; }