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CLI show compare example function

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Improved diff algorithm for XML and TEXT/curly, replaced UNIX diff with structural in-mem algorithm
Fixed: ["show compare" and "show compare | display cli" differs #23](https://github.com/clicon/clixon-controller/issues/23)
Changed parameters of example clispec function `compare_dbs()`
Added show2cbuf functions for TEXT/CLI
Renamed clixon_txt2file to clixon_text2file
This commit is contained in:
Olof hagsand 2023-09-22 10:26:09 +02:00
parent 45f41e3e4d
commit 2603b6f139
19 changed files with 1170 additions and 193 deletions
Download patch file Download diff file Expand all files Collapse all files

131
lib/src/clixon_xml_map.c
View file

@ -410,6 +410,7 @@ xml_diff1(cxobj *x0,
* @retval -1 Error
* All xml vectors should be freed after use.
* @see xml_tree_equal same algorithm but do not bother with what has changed
* @see clixon_xml_diff_print same algorithm but print in +/- diff format
*/
int
xml_diff(cxobj *x0,
@ -1796,7 +1797,7 @@ purge_tagged_nodes(cxobj *xn,
* @param[in] xc1 XML tree 1
* @param[in] xc2 XML tree 2
* @param[in] format "text"|"xml"|"json"|"cli"|"netconf" (see format_enum)
* @see xml_tree_diff_print with better XML in-mem comparison but is YANG dependent
* @see clixon_xml_diff2cbuf with better XML in-mem comparison but is YANG dependent
*/
int
clixon_compare_xmls(cxobj *xc1,
@ -1820,7 +1821,7 @@ clixon_compare_xmls(cxobj *xc1,
goto done;
switch(format){
case FORMAT_TEXT:
if (clixon_txt2file(f, xc1, 0, cligen_output, 1, 1) < 0)
if (clixon_text2file(f, xc1, 0, cligen_output, 1, 1) < 0)
goto done;
break;
case FORMAT_XML:
@ -1841,7 +1842,7 @@ clixon_compare_xmls(cxobj *xc1,
switch(format){
case FORMAT_TEXT:
if (clixon_txt2file(f, xc2, 0, cligen_output, 1, 1) < 0)
if (clixon_text2file(f, xc2, 0, cligen_output, 1, 1) < 0)
goto done;
break;
case FORMAT_XML:
@ -1870,127 +1871,3 @@ clixon_compare_xmls(cxobj *xc1,
unlink(filename2);
return retval;
}
/*! Print diff of two XML trees in memory. YANG dependent
*
* Uses underlying XML diff algorithm with better result than clixon_compare_xmls
* @param[in] cb CLIgen buffer
* @param[in] level How many spaces to insert before each line
* @param[in] x0 First XML tree
* @param[in] x1 Second XML tree
* @param[in] format "text"|"xml"|"json"|"cli"|"netconf" (NYI: only xml)
* @retval 0 Ok
* @retval -1 Error
* @see xml_diff which returns diff sets
* @see clixon_compare_xmls which uses files and is independent of YANG
* XXX only XML
*/
int
xml_tree_diff_print(cbuf *cb,
int level,
cxobj *x0,
cxobj *x1,
enum format_enum format)
{
int retval = -1;
cxobj *x0c = NULL; /* x0 child */
cxobj *x1c = NULL; /* x1 child */
yang_stmt *yc0;
yang_stmt *yc1;
char *b0;
char *b1;
int eq;
int nr=0;
/* Traverse x0 and x1 in lock-step */
x0c = x1c = NULL;
x0c = xml_child_each(x0, x0c, CX_ELMNT);
x1c = xml_child_each(x1, x1c, CX_ELMNT);
for (;;){
if (x0c == NULL && x1c == NULL)
goto ok;
else if (x0c == NULL){
if (nr==0)
cprintf(cb, "%*s%s>\n", level*PRETTYPRINT_INDENT, "<", xml_name(x1));
nr++;
if (clixon_xml2cbuf(cb, x1c, level+1, 1, "+", -1, 0) < 0)
goto done;
x1c = xml_child_each(x1, x1c, CX_ELMNT);
continue;
}
else if (x1c == NULL){
if (nr==0)
cprintf(cb, "%*s%s>\n", level*PRETTYPRINT_INDENT, "<", xml_name(x0));
nr++;
if (clixon_xml2cbuf(cb, x0c, level+1, 1, "-", -1, 0) < 0)
goto done;
x0c = xml_child_each(x0, x0c, CX_ELMNT);
continue;
}
/* Both x0c and x1c exists, check if they are yang-equal. */
eq = xml_cmp(x0c, x1c, 0, 0, NULL);
if (eq < 0){
if (nr==0)
cprintf(cb, "%*s%s>\n", level*PRETTYPRINT_INDENT, "<", xml_name(x0));
nr++;
if (clixon_xml2cbuf(cb, x0c, level+1, 1, "-", -1, 0) < 0)
goto done;
x0c = xml_child_each(x0, x0c, CX_ELMNT);
continue;
}
else if (eq > 0){
if (nr==0)
cprintf(cb, "%*s%s>\n", level*PRETTYPRINT_INDENT, "<", xml_name(x1));
nr++;
if (clixon_xml2cbuf(cb, x1c, level+1, 1, "+", -1, 0) < 0)
goto done;
x1c = xml_child_each(x1, x1c, CX_ELMNT);
continue;
}
else{ /* equal */
/* xml-spec NULL could happen with anydata children for example,
* if so, continute compare children but without yang
*/
yc0 = xml_spec(x0c);
yc1 = xml_spec(x1c);
if (yc0 && yc1 && yc0 != yc1){ /* choice */
if (nr==0)
cprintf(cb, "%*s%s>\n", level*PRETTYPRINT_INDENT, "<", xml_name(x0));
nr++;
if (clixon_xml2cbuf(cb, x0c, level+1, 1, "-", -1, 0) < 0)
goto done;
if (clixon_xml2cbuf(cb, x1c, level+1, 1, "+", -1, 0) < 0)
goto done;
}
else
if (yc0 && yang_keyword_get(yc0) == Y_LEAF){
/* if x0c and x1c are leafs w bodies, then they may be changed */
b0 = xml_body(x0c);
b1 = xml_body(x1c);
if (b0 == NULL && b1 == NULL)
;
else if (b0 == NULL || b1 == NULL
|| strcmp(b0, b1) != 0
){
if (nr==0)
cprintf(cb, "%*s%s>\n", level*PRETTYPRINT_INDENT, "<", xml_name(x0));
nr++;
cprintf(cb, "-%*s%s>%s</%s>\n", (level*PRETTYPRINT_INDENT-1), "<",
xml_name(x0c), b0, xml_name(x0c));
cprintf(cb, "+%*s%s>%s</%s>\n", (level*PRETTYPRINT_INDENT-1), "<",
xml_name(x1c), b1, xml_name(x1c));
}
}
else if (xml_tree_diff_print(cb, level+1, x0c, x1c, format) < 0)
goto done;
}
x0c = xml_child_each(x0, x0c, CX_ELMNT);
x1c = xml_child_each(x1, x1c, CX_ELMNT);
}
ok:
if (nr)
cprintf(cb, "%*s/%s>\n", level*PRETTYPRINT_INDENT, "<", xml_name(x0));
retval = 0;
done:
return retval;
}