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* Experimental text syntax parser/loader

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* Added new text syntax parsing and loading from CLI
  * Unified text output functions to `xml2txt` and moved to clixon_text_syntax.[ch]
    * The following are removed: `cli_xml2txt` and `xml2txt_cb`
  * Text output format changed:
    * Namespace/modulename added to top-level
  * See [Support performant load_config_file(...) for TEXT format](https://github.com/clicon/clixon/issues/324)
This commit is contained in:
Olof hagsand 2022-05-19 12:56:44 +02:00
parent 43a57dad79
commit 2ece0b8f51
29 changed files with 1140 additions and 238 deletions
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169
util/clixon_util_text_syntax.c Normal file
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/*
*
***** BEGIN LICENSE BLOCK *****
Copyright (C) 2022 Olof Hagsand and Rubicon Communications, LLC (Netgate)
This file is part of CLIXON.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
Alternatively, the contents of this file may be used under the terms of
the GNU General Public License Version 3 or later (the "GPL"),
in which case the provisions of the GPL are applicable instead
of those above. If you wish to allow use of your version of this file only
under the terms of the GPL, and not to allow others to
use your version of this file under the terms of Apache License version 2,
indicate your decision by deleting the provisions above and replace them with
the notice and other provisions required by the GPL. If you do not delete
the provisions above, a recipient may use your version of this file under
the terms of any one of the Apache License version 2 or the GPL.
***** END LICENSE BLOCK *****
* Text syntax utility command
*/
#ifdef HAVE_CONFIG_H
#include "clixon_config.h" /* generated by config & autoconf */
#endif
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <string.h>
#include <ctype.h>
#include <limits.h>
#include <stdint.h>
#include <syslog.h>
#include <signal.h>
/* cligen */
#include <cligen/cligen.h>
/* clixon */
#include "clixon/clixon.h"
/* Command line options passed to getopt(3) */
#define UTIL_TEXT_SYNTAX_OPTS "hD:f:tl:y:"
/*
* Text syntax parse and pretty print test program
* Example compile:
*/
static int
usage(char *argv0)
{
fprintf(stderr, "usage:%s [options] JSON as input on stdin\n"
"where options are\n"
"\t-h \t\tHelp\n"
"\t-D <level> \tDebug\n"
"\t-f <file>\tTEXT syntax input file (overrides stdin)\n"
"\t-t \t\tOutput as TEXT syntax (default is as XML)\n"
"\t-l <s|e|o> \tLog on (s)yslog, std(e)rr, std(o)ut (stderr is default)\n"
"\t-y <filename> \tyang filename to parse (must be stand-alone)\n" ,
argv0);
exit(0);
}
int
main(int argc,
char **argv)
{
int retval = -1;
cxobj *xt = NULL;
cxobj *xc;
cbuf *cb = cbuf_new();
int c;
int logdst = CLICON_LOG_STDERR;
int text_syntax_output = 0;
char *yang_filename = NULL;
yang_stmt *yspec = NULL;
cxobj *xerr = NULL; /* malloced must be freed */
int ret;
int dbg = 0;
char *input_filename = NULL;
FILE *fp = stdin; /* base file, stdin */
optind = 1;
opterr = 0;
while ((c = getopt(argc, argv, UTIL_TEXT_SYNTAX_OPTS)) != -1)
switch (c) {
case 'h':
usage(argv[0]);
break;
case 'D':
if (sscanf(optarg, "%d", &dbg) != 1)
usage(argv[0]);
break;
case 'f':
input_filename = optarg;
break;
case 't':
text_syntax_output++;
break;
case 'l': /* Log destination: s|e|o|f */
if ((logdst = clicon_log_opt(optarg[0])) < 0)
usage(argv[0]);
break;
case 'y':
yang_filename = optarg;
break;
default:
usage(argv[0]);
break;
}
clicon_log_init(__FILE__, dbg?LOG_DEBUG:LOG_INFO, logdst);
clicon_debug_init(dbg, NULL);
if (yang_filename){
if ((yspec = yspec_new()) == NULL)
goto done;
if (yang_parse_filename(yang_filename, yspec) == NULL){
fprintf(stderr, "yang parse error %s\n", clicon_err_reason);
return -1;
}
}
if (input_filename){
if ((fp = fopen(input_filename, "r")) == NULL){
clicon_err(OE_YANG, errno, "open(%s)", input_filename);
goto done;
}
}
if ((ret = clixon_text_syntax_parse_file(fp, yspec?YB_MODULE:YB_NONE, yspec, &xt, &xerr)) < 0)
goto done;
if (ret == 0){
xml_print(stderr, xerr);
goto done;
}
xc = NULL;
while ((xc = xml_child_each(xt, xc, -1)) != NULL){
if (text_syntax_output)
xml2txt(xc, fprintf, stdout, 0);
else{
clicon_xml2cbuf(cb, xc, 0, 1, -1); /* print xml */
fprintf(stdout, "%s", cbuf_get(cb));
}
}
fflush(stdout);
retval = 0;
done:
if (yspec)
ys_free(yspec);
if (xt)
xml_free(xt);
if (cb)
cbuf_free(cb);
return retval;
}