Added util directory containing test applications
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Olof hagsand
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cc6c7ae7a4
commit
c71791f168
16 changed files with 130 additions and 32 deletions
231
util/clixon_util_xpath.c
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231
util/clixon_util_xpath.c
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/*
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*
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***** BEGIN LICENSE BLOCK *****
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Copyright (C) 2009-2018 Olof Hagsand and Benny Holmgren
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This file is part of CLIXON.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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Alternatively, the contents of this file may be used under the terms of
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the GNU General Public License Version 3 or later (the "GPL"),
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in which case the provisions of the GPL are applicable instead
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of those above. If you wish to allow use of your version of this file only
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under the terms of the GPL, and not to allow others to
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use your version of this file under the terms of Apache License version 2,
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indicate your decision by deleting the provisions above and replace them with
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the notice and other provisions required by the GPL. If you do not delete
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the provisions above, a recipient may use your version of this file under
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the terms of any one of the Apache License version 2 or the GPL.
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***** END LICENSE BLOCK *****
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See https://www.w3.org/TR/xpath/
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* Turn this on to get an xpath test program
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* Usage: xpath [<xpath>]
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* read xpath on first line and xml on rest of lines from input
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* Example compile:
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gcc -g -o xpath -I. -I../clixon ./clixon_xsl.c -lclixon -lcligen
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* Example run:
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echo "a\n<a><b/></a>" | xpath
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*/
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#ifdef HAVE_CONFIG_H
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#include "clixon_config.h" /* generated by config & autoconf */
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#endif
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <errno.h>
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#include <string.h>
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#include <limits.h>
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#include <fnmatch.h>
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#include <stdint.h>
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#include <assert.h>
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#include <syslog.h>
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#include <fcntl.h>
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/* cligen */
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#include <cligen/cligen.h>
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/* clixon */
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#include <clixon/clixon.h>
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static int
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usage(char *argv0)
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{
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fprintf(stderr, "usage:%s [options]\n"
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"where options are\n"
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"\t-h \t\tHelp\n"
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"\t-D <level> \tDebug\n"
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"\t-f <file> \tXML file\n"
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"\t-p <xpath> \tPrimary XPATH string\n"
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"\t-i <xpath0>\t(optional) Initial XPATH string\n"
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"and the following extra rules:\n"
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"\tif -f is not given, XML input is expected on stdin\n"
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"\tif -p is not given, <xpath> is expected as the first line on stdin\n"
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"This means that with no arguments, <xpath> and XML is expected on stadin.\n",
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argv0
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);
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exit(0);
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}
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static int
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ctx_print2(cbuf *cb,
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xp_ctx *xc)
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{
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int i;
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cprintf(cb, "%s:", (char*)clicon_int2str(ctxmap, xc->xc_type));
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switch (xc->xc_type){
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case XT_NODESET:
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for (i=0; i<xc->xc_size; i++){
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cprintf(cb, "%d:", i);
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clicon_xml2cbuf(cb, xc->xc_nodeset[i], 0, 0);
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}
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break;
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case XT_BOOL:
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cprintf(cb, "%s", xc->xc_bool?"true":"false");
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break;
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case XT_NUMBER:
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cprintf(cb, "%lf", xc->xc_number);
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break;
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case XT_STRING:
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cprintf(cb, "%s", xc->xc_string);
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break;
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}
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return 0;
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}
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int
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main(int argc, char **argv)
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{
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int retval = -1;
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char *argv0 = argv[0];
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int i;
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cxobj **xv = NULL;
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cxobj *x0 = NULL;
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cxobj *x;
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char c;
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int len;
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char *buf = NULL;
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int ret;
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int fd = 0; /* unless overriden by argv[1] */
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char *xpath = NULL;
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char *xpath0 = NULL;
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char *filename;
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xp_ctx *xc = NULL;
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cbuf *cb;
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clicon_log_init("xpath", LOG_DEBUG, CLICON_LOG_STDERR);
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optind = 1;
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opterr = 0;
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while ((c = getopt(argc, argv, "hDf:p:i:")) != -1)
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switch (c) {
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case 'h':
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usage(argv0);
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break;
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case 'D':
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debug++;
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break;
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case 'f': /* XML file */
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filename = optarg;
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if ((fd = open(filename, O_RDONLY)) < 0){
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clicon_err(OE_UNIX, errno, "open(%s)", argv[1]);
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goto done;
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}
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break;
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case 'p': /* Primary XPATH string */
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xpath = optarg;
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break;
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case 'i': /* Optional initial XPATH string */
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xpath0 = optarg;
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break;
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default:
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usage(argv[0]);
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break;
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}
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if (xpath==NULL){
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/* First read xpath */
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len = 1024; /* any number is fine */
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if ((buf = malloc(len)) == NULL){
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perror("pt_file malloc");
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return -1;
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}
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memset(buf, 0, len);
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i = 0;
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while (1){
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if ((ret = read(0, &c, 1)) < 0){
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perror("read");
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goto done;
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}
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if (ret == 0)
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break;
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if (c == '\n')
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break;
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if (len==i){
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if ((buf = realloc(buf, 2*len)) == NULL){
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fprintf(stderr, "%s: realloc: %s\n", __FUNCTION__, strerror(errno));
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return -1;
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}
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memset(buf+len, 0, len);
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len *= 2;
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}
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buf[i++] = (char)(c&0xff);
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}
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xpath = buf;
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}
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/*
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* If fd=0, then continue reading from stdin (after CR)
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* If fd>0, reading from file opened as argv[1]
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*/
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if (xml_parse_file(fd, "</clicon>", NULL, &x0) < 0){
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fprintf(stderr, "Error: parsing: %s\n", clicon_err_reason);
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return -1;
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}
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/* If xpath0 given, position current x */
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if (xpath0){
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if ((x = xpath_first(x0, "%s", xpath0)) == NULL){
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fprintf(stderr, "Error: xpath0 returned NULL\n");
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return -1;
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}
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}
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else
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x = x0;
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/* Parse XML */
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if (xpath_vec_ctx(x, xpath, &xc) < 0)
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return -1;
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/* Print results */
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cb = cbuf_new();
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ctx_print2(cb, xc);
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fprintf(stdout, "%s\n", cbuf_get(cb));
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retval = 0;
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done:
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if (cb)
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cbuf_free(cb);
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if (xc)
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ctx_free(xc);
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if (xv)
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free(xv);
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if (buf)
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free(buf);
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if (x0)
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xml_free(x0);
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if (fd > 0)
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close(fd);
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return retval;
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}
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