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Add pipe functions

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This commit is contained in:
Olof hagsand 2023-07-04 20:48:01 +02:00
parent c16b9cbba4
commit 3858cd93c2
3 changed files with 142 additions and 24 deletions
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146
apps/cli/cli_pipe.c
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@ -31,6 +31,7 @@
***** END LICENSE BLOCK *****
*
* Note, here assume all binaries are in /bin
*/
#ifdef HAVE_CONFIG_H
@ -68,43 +69,142 @@
#include "clixon_cli_api.h"
/* Grep pipe output function
*
* @param[in] h Clixon handle
* @param[in] cmd Command to exec
* @param[in] option Option to command (or NULL)
* @param[in] value Command argument value (or NULL)
* @code
* grep <arg:rest>, grep_fn("-e", "arg");
* @endcode
*/
int
grep_fn(cligen_handle h,
cvec *cvv,
cvec *argv)
pipe_arg_fn(clicon_handle h,
const char *cmd,
const char *option,
const char *value)
{
int retval = -1;
cbuf *cb = NULL;
cg_var *av;
cg_var *cv;
char *name;
if ((cb = cbuf_new()) == NULL){
perror("cbuf_new");
/* XXX rewrite using execv */
if (option){
if (value){
fprintf(stderr, "%s (1): %s %s %s %s NULL\n", __FUNCTION__, cmd, cmd, option, value);
retval = execl(cmd, cmd, option, value, NULL);
}
else{
fprintf(stderr, "%s (2): %s %s %s NULL\n", __FUNCTION__, cmd, cmd, option);
retval = execl(cmd, cmd, option, NULL);
}
}
else{
if (value){
fprintf(stderr, "%s (3): %s %s %s NULL\n", __FUNCTION__, cmd, cmd, value);
retval = execl(cmd, cmd, value, NULL);
}
else{
fprintf(stderr, "%s (4): %s %s NULL\n", __FUNCTION__, cmd, cmd);
retval = execl(cmd, cmd, NULL);
}
}
return retval;
}
/* Grep pipe output function
*
* @param[in] h Clicon handle
* @param[in] cvv Vector of cli string and instantiated variables
* @param[in] argv String vector of options. Format: <option> <value>
*/
int
pipe_grep_fn(clicon_handle h,
cvec *cvv,
cvec *argv)
{
int retval = -1;
char *value = NULL;
cg_var *cv;
char *str;
char *option;
char *argname;
if (cvec_len(argv) != 2){
clicon_err(OE_PLUGIN, EINVAL, "Received %d arguments. Expected: <option> <argname>", cvec_len(argv));
goto done;
}
if (argv && (av = cvec_i(argv, 0)) != NULL){
/* First arg is command */
// cprintf(cb, "%s", cv_string_get(av));
/* Rest are names of parameters from cvv */
av = NULL;
while ((av = cvec_each1(argv, av)) != NULL){
name = cv_string_get(av);
if ((cv = cvec_find_var(cvv, name)) != NULL)
cprintf(cb, "%s", cv_string_get(cv));
}
retval = execl("/bin/grep", "grep", "-e", cbuf_get(cb), (char *) NULL);
if ((cv = cvec_i(argv, 0)) != NULL &&
(str = cv_string_get(cv)) != NULL &&
strlen(str))
option = str;
if ((cv = cvec_i(argv, 1)) != NULL &&
(str = cv_string_get(cv)) != NULL &&
strlen(str))
argname = str;
if (argname && strlen(argname)){
if ((cv = cvec_find_var(cvv, argname)) != NULL &&
(str = cv_string_get(cv)) != NULL &&
strlen(str))
value = str;
}
retval = pipe_arg_fn(h, "/bin/grep", option, value);
done:
if (cb)
cbuf_free(cb);
return retval;
}
/* Grep pipe output function
*
* @param[in] h Clicon handle
* @param[in] cvv Vector of cli string and instantiated variables
* @param[in] argv String vector of options. Format: <option> <value>
*/
int
pipe_tail_fn(clicon_handle h,
cvec *cvv,
cvec *argv)
{
return pipe_arg_fn(h, "/bin/tail", "-5", NULL);
}
int
pipe_json_fn(clicon_handle h,
cvec *cvv,
cvec *argv)
{
int retval = -1;
cxobj *xt = NULL;
if (clixon_xml_parse_file(stdin, YB_NONE, NULL, &xt, NULL) < 0)
goto done;
if (clixon_json2file(stdout, xt, 1, cligen_output, 1, 0) < 0)
goto done;
retval = 0;
done:
if (xt)
xml_free(xt);
return retval;
}
int
pipe_text_fn(clicon_handle h,
cvec *cvv,
cvec *argv)
{
int retval = -1;
cxobj *xt = NULL;
if (clixon_xml_parse_file(stdin, YB_NONE, NULL, &xt, NULL) < 0)
goto done;
if (clixon_txt2file(stdout, xt, 0, cligen_output, 1, 0) < 0)
goto done;
retval = 0;
done:
if (xt)
xml_free(xt);
return retval;
}
/*! Test cli callback calls cligen_output with output lines as given by function arguments
*
* This is to generate output to eg cligen_output scrolling
* Only for test or debugging to generate output to eg cligen_output scrolling
* Example:
* a, printlines_fn("line1 abc", "line2 def");
*/