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cligen_match.c
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/*
CLI generator match functions, used in runtime checks.
***** BEGIN LICENSE BLOCK *****
Copyright (C) 2001-2022 Olof Hagsand
This file is part of CLIgen.
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 2 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 *****
*/
#include "cligen_config.h"
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <string.h>
#include <netdb.h>
#include <errno.h>
#include <limits.h>
#include <sys/types.h>
#include <assert.h>
#define __USE_GNU /* isblank() */
#include <ctype.h>
#ifndef isblank
#define isblank(c) (c==' ')
#endif /* isblank */
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include "cligen_buf.h"
#include "cligen_cv.h"
#include "cligen_cvec.h"
#include "cligen_parsetree.h"
#include "cligen_pt_head.h"
#include "cligen_callback.h"
#include "cligen_object.h"
#include "cligen_print.h"
#include "cligen_handle.h"
#include "cligen_expand.h"
#include "cligen_result.h"
#include "cligen_read.h"
#include "cligen_match.h"
#ifndef MIN
#define MIN(x,y) ((x)<(y)?(x):(y))
#endif
/* Development debugging for sets matching */
#undef _DEBUG_SETS
/*! Match variable against input string
*
* @param[in] h CLIgen handle
* @param[in] co cligen object
* @param[in] str Input string to match
* @param[out] reason if not match and co type is 0, reason points to a (malloced) err string
* @retval -1 Error (print msg on stderr)
* @retval 0 Not match and reason returned as malloced string.
* @retval 1 Match
* Who prints errors?
* @see cvec_match where actual allocation of variables is made not only sanity
* For ints a double parse for most specific error, see https://github.com/clicon/clixon/issues/319
*/
static int
match_variable(cligen_handle h,
cg_obj *co,
char *str,
char **reason)
{
int retval = -1;
cg_var *cv; /* Just a temporary cv for validation */
cg_varspec *cs;
enum cv_type t;
cs = &co->u.cou_var;
t = co->co_vtype;
/* First parse as least specific type */
if (t==CGV_INT8 || t==CGV_INT16|| t==CGV_INT32)
t = CGV_INT64;
else if (t==CGV_UINT8 || t==CGV_UINT16|| t==CGV_UINT32)
t = CGV_UINT64;
if ((cv = cv_new(t)) == NULL)
goto done;
if (t == CGV_DEC64) /* XXX: Seems misplaced? / too specific */
cv_dec64_n_set(cv, cs->cgs_dec64_n);
if ((retval = cv_parse1(str, cv, reason)) <= 0)
goto done;
/* here retval should be 1 */
/* Validate value */
if ((retval = cv_validate(h, cv, cs, co->co_command, reason)) <= 0)
goto done;
if (t != co->co_vtype){ /* Second parse as specific type */
cv_reset(cv);
cv_type_set(cv, co->co_vtype);
if ((retval = cv_parse1(str, cv, reason)) <= 0)
goto done;
}
/* here retval should be 1 */
done:
if (cv)
cv_free(cv);
return retval;
}
/*! Given a string and one cligen object, return if the string matches
*
* @param[in] h CLIgen handle
* @param[in] str Input string to match (NULL is match)
* @param[in] co cligen object
* @param[in] best Only return best match (for command evaluation) instead of all possible options
* @param[out] exact 1 if match is exact (CO_COMMANDS). VARS is 0.
* @param[out] reason if not match and co type is 0, reason points to a (malloced)
* string containing an error explanation string. If reason is
* NULL no such string will be malloced. This string needs to
* be freed.
* @retval -1 Error
* @retval 0 Not match
* @retval 1 Match
*/
static int
match_object(cligen_handle h,
char *str,
cg_obj *co,
int best,
int *exact,
char **reason)
{
int match = 0;
size_t len = 0;
enum cv_type t;
if (str)
len = strlen(str);
if (exact)
*exact = 0;
if (co==NULL) /* shouldnt happen */
return 0;
switch (co->co_type){
case CO_COMMAND:
if (str == NULL)
match++;
else{
if (best && *co->co_command == '\"'){ /* escaped */
if (cligen_caseignore_get(h))
match = (strncasecmp(co->co_command+1, str, len) == 0);
else
match = (strncmp(co->co_command+1, str, len) == 0);
if (exact)
*exact = strlen(co->co_command+1) == len;
}
else{
if (cligen_caseignore_get(h))
match = (strncasecmp(co->co_command, str, len) == 0);
else
match = (strncmp(co->co_command, str, len) == 0);
if (exact)
*exact = strlen(co->co_command) == len;
}
if (match == 0 && reason){
if ((*reason = strdup("Unknown command")) == NULL)
return -1;
}
}
break;
case CO_VARIABLE:
t = co->co_vtype;
if (str == NULL || len==0){
if (best && cv_isint(t)){
if ((match = match_variable(h, co, str, reason)) < 0)
return -1;
}
else
match++;
}
else
if ((match = match_variable(h, co, str, reason)) < 0)
return -1;
break;
case CO_REFERENCE: /* This should never match, it is an abstract object that is expanded */
if (reason){
if ((*reason = strdup("Reference")) == NULL)
return -1;
}
break;
case CO_EMPTY: /* Nothing match with empty (same as co = NULL) */
if (reason){
if ((*reason = strdup("Empty")) == NULL)
return -1;
}
break;
}
if (match == 0){
if (reason)
assert(*reason != NULL);
return 0;
}
else
return 1;
}
/*! Returns the total number of "levels" of a CLIgen command string
*
* A level is an atomic command delimetered by space or tab.
* Example: "", "a", "abcd" has level 0
* "abcd ", "vb fg" has level 1
* "abcd gh ", "vb fg hjsa" has level 2
*
* @param[in] cv CLIgen variable vector, containing all tokens.
* @retval 0-n Number of levels
* @retval -1 Error
*/
int
cligen_cvv_levels(cvec *cvv)
{
size_t sz;
if (cvv == NULL)
return -1;
sz = cvec_len(cvv);
if (sz == 0)
return -1;
else return sz - 2;
}
/*! Termination criterium foir command string
*/
static int
last_level(cvec *cvt,
int level)
{
int levels;
levels = cligen_cvv_levels(cvt);
if (level >= levels)
return 1;
return 0;
}
/*! Termination criterium for parse-tree
*
* Assume:
* 1) pt -> []
* 2) pt -> [null]
* 3) pt -> [null, a, ..]
* 4) pt -> [a, ..] # with no null element
* @retval 0 case 4
* @retval 1 case 3
* @retval 2 case 1,2
*/
static int
last_pt(parse_tree *pt)
{
int i;
cg_obj *co;
ssize_t len;
len = pt_len_get(pt);
if (len == 0)
return 1;
for (i=0; i<len; i++){
if ((co = pt_vec_i_get(pt, i)) == NULL ||
co->co_type == CO_EMPTY)
return len==1?1:2;
}
return 0;
}
/*! Return if the parse-tree is only variables, or if there is at least one non-variable
*
* @param[in] pt Parse-tree
* @retval 0 Empty or contains at least one command (non-var)
* @retval 1 0 elements, only variables alternatives (or commands derived from variables)
*/
static int
pt_onlyvars(parse_tree *pt)
{
int i;
cg_obj *co;
int onlyvars = 0;
for (i=0; i<pt_len_get(pt); i++){
if ((co = pt_vec_i_get(pt, i)) == NULL)
continue;
if (co->co_type != CO_VARIABLE && co->co_ref == NULL){
onlyvars = 0;
break;
}
onlyvars = 1;
}
return onlyvars;
}
/*! Help function to append a cv to a cvec. For expansion cvec passed to pt_expand
*
* @param[in] h CLIgen handle
* @param[in] co A cligen variable that has a matching value
* @param[in] cmd Value in string of the variable
* @param[out] cvv The cligen variable vector to push a cv with name of co and
* value in cmd
* @retval cv Cligen variable
* @retval NULL Error
* XXX see cvec_match
*/
static cg_var *
add_cov_to_cvec(cligen_handle h,
cg_obj *co,
char *cmd,
cvec *cvv)
{
cg_var *cv = NULL;
if ((cv = cvec_add(cvv, co->co_vtype)) == NULL)
return NULL;
cv_name_set(cv, co->co_command);
if (co->co_vtype == CGV_DEC64) /* XXX: Seems misplaced? / too specific */
cv_dec64_n_set(cv, co->co_dec64_n);
if (cv_parse(cmd, cv) < 0) {
cv_reset(cv);
cvec_del(cvv, cv);
return NULL;
}
// if (co->co_show)
// cv->var_show = strdup4(co->co_show);
/* If translator function defined, here translate value */
if (co->co_translate_fn != NULL &&
co->co_translate_fn(h, cv) < 0)
return NULL;
return cv;
}
/*! Match a parse-tree (pt) with a command vector (cvt/cvr)
*
* @param[in] h CLIgen handle
* @param[in] token Token to match at this level
* @param[in] resttokens Rest of tokens at this level (special case if type is REST)
* @param[in] pt Vector of commands (array of cligen object pointers (cg_obj)
* @param[in] best Only return best match (for command evaluation) instead of
* all possible options
* @param[out] mr Match result, when retval = 0
* @retval 0 OK. result in mr parameter
* @retval -1 Error
*/
static int
match_vec(cligen_handle h,
parse_tree *pt,
char *token,
char *resttokens,
int lasttoken,
int best,
match_result *mr)
{
int retval = -1;
int32_t pref_lower = INT32_MAX; /* Preference lower bound */
int32_t pref_upper = 0; /* Preference upper bound */
int p; /* If all fails, save lowest(widest) preference error message */
int exact;
char *tmpreason = NULL;
int i;
cg_obj *co;
cg_obj *cop = NULL;
int match;
/* Loop through parse-tree at this level to find matches */
for (i=0; i<pt_len_get(pt); i++){
if ((co = pt_vec_i_get(pt, i)) == NULL)
continue;
/* Return -1: error, 0: nomatch, 1: match */
tmpreason = NULL;
if ((match = match_object(h,
ISREST(co)?resttokens:token,
co, best, &exact,
&tmpreason /* if match == 0 */
)) < 0)
goto done;
p = co_pref(co, exact); /* get match preferences (higher is better match) */
if (match == 0){ /* No match */
assert(tmpreason != NULL);
/* If all fails, save lowest(widest) preference error message,
* for variables only
*/
if (p < pref_lower && co->co_type == CO_VARIABLE){
pref_lower = p;
mr_reason_set(mr, tmpreason);
tmpreason = NULL;
}
if (tmpreason){
free(tmpreason);
tmpreason = NULL;
}
}
/* An alternative is to sort away these after the call in match_pattern_sets_local */
else if (co_flags_get(co, CO_FLAGS_MATCH)){
p = 1; /* XXX lower than any variables*/
if (p < pref_lower){
char *r;
pref_lower = p;
if ((r = strdup("Already matched")) == NULL)
goto done;
mr_reason_set(mr, r);
}
}
else { /* Match: if best compare and save highest preference */
assert(tmpreason == NULL);
if (best){ /* only save best match */
if (p == pref_upper){
if (cligen_preference_mode(h) == 1 &&
lasttoken &&
cop &&
cop->co_type == CO_VARIABLE &&
co->co_type == CO_VARIABLE) /* Skip terminal pref if preference mode */
;
else if (cligen_preference_mode(h) == 2 &&
!lasttoken &&
cop &&
cop->co_type == CO_VARIABLE &&
co->co_type == CO_VARIABLE) /* Skip same pref if preference mode */
;
else if (cligen_preference_mode(h) == 3 &&
cop &&
cop->co_type == CO_VARIABLE &&
co->co_type == CO_VARIABLE) /* Skip same pref if preference mode */
;
else{
/* Copy co and append it to mr parse-tree */
if (mr_pt_append(mr, co, ISREST(co)?resttokens:token) < 0)
goto done;
}
}
else if (p > pref_upper){ /* Start again at this level */
pref_upper = p;
if (mr_pt_reset(mr) < 0)
goto done;
if (mr_pt_append(mr, co, ISREST(co)?resttokens:token) < 0)
goto done;
cop = co;
}
else{ /* p < pref_upper : skip */
}
} /* if best */
else {
if (mr_pt_append(mr, co, ISREST(co)?resttokens:token) < 0)
goto done;
}
} /* switch match */
assert(tmpreason == NULL);
} /* for pt_len_get(pt) */
/* Only return reason if matches == 0 */
if (mr_pt_len_get(mr) != 0)
mr_reason_set(mr, NULL);
retval = 0;
done:
return retval;
}
/*! Bind vars and constants to variable vectors used for completion and callbacks
*
* @param[in] h CLIgen handle
* @param[in] co_match Matched cligen parse object
* @param[in] token Token
* @param[out] cvv cligen variable vector containing vars/values pair for completion
*/
static int
match_bindvars(cligen_handle h,
cg_obj *co,
char *token,
cvec *cvv)
{
int retval = -1;
cg_var *cv = NULL;
cg_obj *co_orig;
/* co_orig is original object in case of expansion */
if ((co_orig = co->co_treeref_orig) == NULL)
co_orig = co->co_ref;
if (co->co_type == CO_VARIABLE){
/* Once so translate only is done once */
if ((cv = add_cov_to_cvec(h, co, token, cvv)) == NULL)
goto done;
}
else if (co->co_type == CO_COMMAND && co_orig->co_type == CO_VARIABLE){
/* Once so translate only is done once */
if ((cv = add_cov_to_cvec(h, co_orig,
co->co_value?co->co_value:co->co_command,
cvv)) == NULL)
goto done;
}
else{
if ((cv = cvec_add(cvv, CGV_STRING)) == NULL)
goto done;
cv_name_set(cv, co->co_command);
cv_type_set(cv, CGV_STRING);
cv_string_set(cv, co->co_command);
cv_const_set(cv, 1);
}
retval = 0;
done:
return retval;
}
static int
co_clearflag(cg_obj *co,
void *arg)
{
co_flags_reset(co, (intptr_t)arg);
return 0;
}
/*! Matchpattern sets local
*
* @param[in] h CLIgen handle
* @param[in] cvt Tokenized string: vector of tokens
* @param[in] cvr Rest variant, eg remaining string in each step
* @param[in] pt Vector of commands. Array of cligen object pointers
* @param[in] pt_max Length of the pt array
* @param[in] level Current command level
* @param[in] best Only return best match (for command evaluation) instead of
* all possible options. Only called from match_pattern_exact()
* @param[out] mrp Match result including how many matches, level, reason for nomatc, etc
* @param[in,out] cvv cligen variable vector containing vars/values pair for completion
* @retval 0 OK. result returned in mrp
* @retval -1 Error
*/
static int
match_pattern_sets_local(cligen_handle h,
cvec *cvt,
cvec *cvr,
parse_tree *pt,
int level,
int best,
cvec *cvv,
match_result **mrp)
{
int retval = -1;
cg_obj *co_match = NULL;
cg_obj *co_orig = NULL;
int lasttoken = 0;
char *token;
char *resttokens;
match_result *mr0 = NULL;
if ((mr0 = mr_new()) == NULL)
goto done;
/* Tokens of this level */
token = cvec_i_str(cvt, level+1);
/* Is this last token? */
lasttoken = last_level(cvt, level);
resttokens = cvec_i_str(cvr, level+1);
/* Return level at this point, can be overriden by recursive call */
mr_level_set(mr0, level);
/* How many matches of cvt[level+1] in pt */
if (match_vec(h,
pt, token, resttokens,
lasttoken,
lasttoken?best:1, /* use best preference match in non-terminal matching*/
mr0) < 0)
goto done;
/* Number of matches is 0 (no match), 1 (exact) or many */
switch (mr_pt_len_get(mr0)){
case 0: /* no matches */
if (pt_onlyvars(pt))
; /* XXX Uuh mr0 already has a reason,... */
mr_pt_reset(mr0);
goto ok;
break;
case 1: /* exactly one match */
break;
default: /* multiple matches:
* note that there is code in match_patter_exact that can collapse multiple matches
* to one under certain circumstances
*/
if (lasttoken){
if (best){
co_match = mr_pt_i_get(mr0, 0);
if (match_bindvars(h, co_match,
ISREST(co_match)?resttokens:token,
cvv) < 0)
goto done;
}
goto ok; /* will return matches > 1 */
}
mr_pt_reset(mr0);
mr_reason_set(mr0, strdup("Ambiguous command"));
goto ok; /* will return matches = 0 */
break;
} /* switch matches */
if (mr_pt_len_get(mr0) != 1){
errno = EFAULT; /* shouldnt happen */
goto done;
}
/* Get the single match object */
co_match = mr_pt_i_get(mr0, 0);
/* co_orig is original object in case of expansion */
co_orig = co_match->co_ref?co_match->co_ref: co_match;
/* Already matched (sets functionality) */
if (co_flags_get(co_match, CO_FLAGS_MATCH)){ /* XXX: orig?? */
char *r;
if ((r = strdup("Already matched")) == NULL)
goto done;
mr_reason_set(mr0, r);
mr_pt_reset(mr0);
goto ok; /* will return matches = 0 */
}
/* Do it if not last or best */
if (!lasttoken || best){
/* Bind vars and constants to variable vectors used for completion and callbacks */
if (match_bindvars(h, co_match,
ISREST(co_match)?resttokens:token,
cvv) < 0)
goto done;
}
if (lasttoken ||
(co_match->co_type == CO_VARIABLE && ISREST(co_match))){
/*
* Special case: we have matched a REST variable (anything) and
* there is more text have this word, then we can match REST
* This is "inline" of match_terminal
*/
mr_last_set(mr0); /* dont go to children */
}
ok:
/* mr0:local or mrc:child
* if mrc has result, take that, otherwise take mr0
*/
switch (mr_pt_len_get(mr0)) {
case 0:
break;
case 1:
if (co_match->co_type == CO_COMMAND &&
co_orig && co_orig->co_type == CO_VARIABLE)
if (co_value_set(co_orig, co_match->co_command) < 0)
goto done;
break;
default:
break;
} /* matches */
*mrp = mr0;
mr0 = NULL;
retval = 0;
done:
#if 0 /* Only if no match? */
if (cv){ /* cv may be stale */
cv = cvec_i(cvv, cvec_len(cvv)-1);
cv_reset(cv);
cvec_del(cvv, cv);
}
#endif
if (mr0)
mr_free(mr0);
/* Only the last level may have multiple matches */
return retval;
} /* match_pattern_sets_local */
/* Merge callbacks of local co and treeref reference
*
* @param[in] co CLIgen parse-tree object
* @param[in] cc_ref Callbacks of origin tree-reference object
* @retval 1 OK and return (abort iteration)
* @retval 0 OK and continue
* @retval -1 Error: break and return
* @note does not support multiple ccref or co callbacks
*/
static int
treeref_merge_co(cg_obj *co,
cg_callback *cc_ref)
{
int retval = -1;
cg_callback *cc;
cg_callback *cclast;
cg_obj *ce;
cg_var *cv;
parse_tree *pt;
if (cc_ref == NULL){
errno = EINVAL;
goto done;
}
/* check if empty */
if ((pt = co_pt_get(co)) == NULL ||
(ce = pt_vec_i_get(pt, 0)) == NULL ||
ce->co_type != CO_EMPTY)
goto ok;
if ((cc = co->co_callbacks) == NULL){
if (co_callback_copy(cc_ref, &co->co_callbacks) < 0)
goto done;
}
else if ((cc->cc_flags & CC_FLAGS_PIPE_FUNCTION) == 0){ /* Merge if regular functions */
cc->cc_fn_vec = cc_ref->cc_fn_vec;
if (cc_ref->cc_fn_str){
if (cc->cc_fn_str)
free(cc->cc_fn_str);
if ((cc->cc_fn_str = strdup(cc_ref->cc_fn_str)) == NULL)
goto done;
}
if (cc_ref->cc_cvec){
cv = NULL;
while ((cv = cvec_each(cc_ref->cc_cvec, cv)) != NULL)
cvec_append_var(cc->cc_cvec, cv);
}
}
else { /* local is PIPE function, append regular function last */
cclast = NULL;
for (; cc; cc = co_callback_next(cc))
cclast = cc;
if (co_callback_copy(cc_ref, &cclast->cc_next) < 0)
goto done;
}
ok:
retval = 0;
done:
return retval;
}
/*! Merge callbacks helper function to match_pattern_sets
*/
static int
callbacks_merge(cg_obj *coref,
cg_callback *callbacks0,
cg_callback **callbacksp)
{
int retval = -1;
cvec *cvv = NULL;
cg_var *cv;
if (coref){
/* prepend_me is added in clixon cli generate code
* Add the argument (eg api-path-fmt) in front of existing parameter.
* If not exist, create new callback cvec
*/
if (callbacks0 &&
strcmp(coref->co_callbacks->cc_fn_str, "prepend_me") == 0){
/* Assume only single coref parameter */
if ((cv = cvec_i(coref->co_callbacks->cc_cvec, 0)) == NULL){
fprintf(stderr, "%s no first element in coref cvec\n", __FUNCTION__);
goto done;
}
cvv = cvec_from_var(cv);
cv = NULL;
while ((cv = cvec_each(callbacks0->cc_cvec, cv)) != NULL){
if (cvec_append_var(cvv, cv) == NULL)
goto done;
}
if (callbacks0->cc_cvec)
cvec_free(callbacks0->cc_cvec);
callbacks0->cc_cvec = cvv; // XXX destructively change
cvv = NULL;
*callbacksp = callbacks0;
}
else{
if (co_callback_copy(coref->co_callbacks, callbacksp) < 0)
goto done;
/* callbacks0 != callbacks indicate new cvec */
}
}
else
*callbacksp = callbacks0;
retval = 0;
done:
if (cvv)
cvec_free(cvv);
return retval;
}
/*! Matchpattern sets
*
* @param[in] h CLIgen handle
* @param[in] cvt Tokenized string: vector of tokens
* @param[in] cvr Rest variant, eg remaining string in each step
* @param[in] pipetree Default pipe tree to use if no specific exists (or NULL)
* @param[in] pt Vector of commands. Array of cligen object pointers
* @param[in] pt_max Length of the pt array
* @param[in] level Current command level
* @param[in] best If set, only return best match (for command evaluation) instead of
* all possible options. Match also hidden options.
* If not set, return all possible matches, do not return hidden options
* @param[in,out] cvv cligen variable vector containing vars/values pair for completion
* @param[in] callbacks0 Callback structure of expanded treeref
* @param[out] mrp Match result including how many matches, level, reason for nomatc, etc
* @retval 0 OK. result returned in mrp
* @retval -1 Error
* Note: parameter "best" is only set in call from match_pattern_exact().
*/
static int
match_pattern_sets(cligen_handle h,
cvec *cvt,
cvec *cvr,
char *pipe_default,
parse_tree *pt,
int level,
int best,
cvec *cvv,
cg_callback *callbacks0,
match_result **mrp)
{
int retval = -1;
match_result *mr0 = NULL; /* Local */
parse_tree *ptn = NULL; /* Expanded */
cg_obj *co_match;
int lastsyntax = 0;
match_result *mrc = NULL; /* child result */
match_result *mrcprev = NULL; /* previous succesful result */
char *token;
cg_callback *callbacks = NULL;
cg_obj *coref = NULL;
char *pipe_local;
cg_obj *co_pipe = NULL;
cbuf *cb = NULL;
token = cvec_i_str(cvt, level+1); /* for debugging */
#ifdef _DEBUG_SETS
fprintf(stderr, "%s %*s level: %d token:%s\npt:\n", __FUNCTION__, level*3,"",
level, strlen(token)?token:"\"\"");
pt_print(stderr, pt);
#endif
/* Match the current token */
if (match_pattern_sets_local(h, cvt, cvr, pt, level, best,
cvv, &mr0) < 0)
goto done;
#ifdef _DEBUG_SETS
fprintf(stderr, "%s %*s matchnr:%d\n", __FUNCTION__, level*3,"", mr_pt_len_get(mr0));
#endif
if (mr_pt_len_get(mr0) != 1){ /* If not unique match exit here */
*mrp = mr0;
mr0 = NULL;
goto ok;
}
/* Unique match */
co_match = mr_pt_i_get(mr0, 0);
/* Get original coref if top-of-tree / reference and has callbacks
*/
if (co_flags_get(co_match, CO_FLAGS_TOPOFTREE)){
coref = co_match;
while (coref->co_ref){
coref = coref->co_ref;
}
if (coref->co_type != CO_REFERENCE || coref->co_callbacks == NULL)
coref = NULL;
else if (coref->co_type == CO_REFERENCE &&
coref->co_command[0] == '|'){
/* If this is a pipe output tree, dont use default */
pipe_default = NULL;
}
}
/* If co_match is a new top-of-tree, save the callbacks and send them
* on stack to sub-calls, so they can be merged with local callbacks.
*/
if (callbacks_merge(coref, callbacks0, &callbacks) < 0)
goto done;
if (callbacks){
/* Merge callbacks of local co and treeref reference */
if (treeref_merge_co(co_match, callbacks) < 0)
goto done;
}
#ifdef _DEBUG_SETS
fprintf(stderr, "%s %*s match co:%s\n", __FUNCTION__, level*3,"", co_match->co_command);
#endif
if (mr_last_get(mr0) && (strcmp(token, "") != 0)){
mr_flags_set_co_match(mr0, co_match);
*mrp = mr0;
mr0 = NULL;
goto ok;
}
/* Local, explicit pipetree in pt overrides default */
if ((pipe_local = pt_local_pipe(co_pt_get(co_match))) == NULL &&
pipe_default != NULL) {
if ((cb = cbuf_new()) == NULL)
goto done;
cprintf(cb, "|%s", pipe_default);
if ((co_pipe = co_new(pipe_default, NULL)) == NULL)
goto done;
co_pipe->co_type = CO_REFERENCE;
}
if ((ptn = pt_new()) == NULL)
goto done;
if (pt_expand(h,
co_match,
co_pt_get(co_match),
cvt,
cvv,
!best, /* If best is set, include hidden commands, otherwise do not */
1, /* VARS are expanded, eg ? <tab> */
callbacks,
co_pipe,
ptn) < 0) /* expand/choice variables */
goto done;
if (pipe_local)
pipe_default = pipe_local;
/* Check termination criteria */
lastsyntax = last_pt(ptn); /* 0, 1 or 2 */
switch (lastsyntax){
case 0: /* Not last in syntax tree, continue */
break;
case 1: /* Last in syntax tree (not token) */
mr_flags_set_co_match(mr0, co_match);
*mrp = mr0;
mr0 = NULL;
goto ok;
break;
case 2: /* Last in syntax tree but can continue,... */
break;
}
if (pt_sets_get(ptn)){ /* For sets, iterate */
#ifdef _DEBUG_SETS
fprintf(stderr, "%s %*s sets:\n", __FUNCTION__, level*3,"");
#endif
while (!last_level(cvt, level)){
if (mrc != NULL)
mrc = NULL;
if (match_pattern_sets(h, cvt, cvr,
pipe_default,
ptn,
level+1,
best,
cvv,
callbacks,
&mrc) < 0)
goto done;
#ifdef _DEBUG_SETS
fprintf(stderr, "%s %*s sets matchnr: %d\n", __FUNCTION__, level*3,"", mr_pt_len_get(mrc));
#endif
if (mr_pt_len_get(mrc) != 1)
break;
#ifdef _DEBUG_SETS
fprintf(stderr, "%s %*s sets match co: %s\n", __FUNCTION__, level*3,"",
mr_pt_i_get(mrc, 0)->co_command);
#endif
if (mrcprev != NULL)
mr_free(mrcprev);
mrcprev = mrc;
level = mr_level_get(mrc); /* XXX level always 0 */
} /* while */
if (mrc == NULL){
*mrp = mr0;
mr0 = NULL;
goto ok;
}
}
else{
if (last_level(cvt, level)){
*mrp = mr0;
mr0 = NULL;
goto ok;
}
else if (match_pattern_sets(h, cvt, cvr,
pipe_default,
ptn,
level+1,
best,
cvv,
callbacks,
&mrc) < 0)
goto done;
}
/* Clear all CO_FLAGS_MATCH recursively
* Only co_match is set with CO_FLAGS_MATCH
*/
pt_apply(ptn, co_clearflag, 1, (void*)CO_FLAGS_MATCH);
/* If child match fails, use previous */
if (mr_pt_len_get(mrc) == 0 && mrcprev){
/* Transfer match flags from ptn to pt if this tree has no more matches */
mr_flags_set_co_match(mr0, co_match);
mr_mv_reason(mrc, mrcprev); /* transfer error reason if any from child */
*mrp = mrcprev;
mrcprev = NULL;
}
else if (mr_pt_len_get(mrc) == 0 && lastsyntax == 2){ /* If no child match, then use local */
mr_flags_set_co_match(mr0, co_match);