/*
* Now we try to write big enough code to duplication our array in Jim's
* list implementation. Later, we try to load a sample script in Tcl that
* could print our list.
*/
int
main(int argc, char **argv)
{
struct mystate *jconf;
Jim_Interp *interp;
Jim_Obj *errstr;
Jim_Obj *n;
Jim_Obj *v;
int error;
errstr = n = v = NULL;
error = 0;
/* This is the first function embedders should call. */
Jim_InitEmbedded();
/* Create an interpreter */
interp = Jim_CreateInterp();
assert(interp != NULL && "couldn't create interpreter");
/*
* Then, we register base commands, so that we actually implement Tcl.
*/
Jim_RegisterCoreCommands(interp);
/*
* Create unique state for our sample parser and register all
* Jim commands.
*/
jconf = mystate_new();
Jim_CreateCommand(interp, "interface", InterfaceFunc, jconf, NULL);
Jim_CreateCommand(interp, "ip", InterfaceIPFunc, jconf, NULL);
/*
* Parse a script.
*/
error = Jim_EvalFile(interp, "./net.tcl");
if (error == JIM_ERR) {
fprintf(stderr, "Couldn't execute Jim's script. "
"Error occured\n");
Jim_PrintErrorMessage(interp);
Jim_FreeInterp(interp);
exit(EXIT_FAILURE);
}
ShowInterfaces(jconf->head);
mystate_destroy(jconf);
if (n != NULL)
Jim_FreeObj(interp, n);
Jim_FreeInterp(interp);
return (EXIT_SUCCESS);
}
const char *Jim_Debug_ArgvString(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
{
static Jim_Obj *debug_string_obj;
int x;
if (debug_string_obj)
Jim_FreeObj(interp, debug_string_obj);
debug_string_obj = Jim_NewEmptyStringObj(interp);
for (x = 0; x < argc; x++)
Jim_AppendStrings(interp, debug_string_obj, Jim_String(argv[x]), " ", NULL);
return Jim_String(debug_string_obj);
}
int Jim_RegsubCmd(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
{
int regcomp_flags = 0;
int regexec_flags = 0;
int opt_all = 0;
int offset = 0;
regex_t *regex;
const char *p;
int result;
regmatch_t pmatch[MAX_SUB_MATCHES + 1];
int num_matches = 0;
int i, j, n;
Jim_Obj *varname;
Jim_Obj *resultObj;
const char *source_str;
int source_len;
const char *replace_str;
int replace_len;
const char *pattern;
int option;
enum {
OPT_NOCASE, OPT_LINE, OPT_ALL, OPT_START, OPT_END
};
static const char * const options[] = {
"-nocase", "-line", "-all", "-start", "--", NULL
};
if (argc < 4) {
wrongNumArgs:
Jim_WrongNumArgs(interp, 1, argv,
"?-switch ...? exp string subSpec ?varName?");
return JIM_ERR;
}
for (i = 1; i < argc; i++) {
const char *opt = Jim_String(argv[i]);
if (*opt != '-') {
break;
}
if (Jim_GetEnum(interp, argv[i], options, &option, "switch", JIM_ERRMSG | JIM_ENUM_ABBREV) != JIM_OK) {
return JIM_ERR;
}
if (option == OPT_END) {
i++;
break;
}
switch (option) {
case OPT_NOCASE:
regcomp_flags |= REG_ICASE;
break;
case OPT_LINE:
regcomp_flags |= REG_NEWLINE;
break;
case OPT_ALL:
opt_all = 1;
break;
case OPT_START:
if (++i == argc) {
goto wrongNumArgs;
}
if (Jim_GetIndex(interp, argv[i], &offset) != JIM_OK) {
return JIM_ERR;
}
break;
}
}
if (argc - i != 3 && argc - i != 4) {
goto wrongNumArgs;
}
regex = SetRegexpFromAny(interp, argv[i], regcomp_flags);
if (!regex) {
return JIM_ERR;
}
pattern = Jim_String(argv[i]);
source_str = Jim_GetString(argv[i + 1], &source_len);
replace_str = Jim_GetString(argv[i + 2], &replace_len);
varname = argv[i + 3];
/* Create the result string */
resultObj = Jim_NewStringObj(interp, "", 0);
/* If an offset has been specified, adjust for that now.
* If it points past the end of the string, point to the terminating null
*/
if (offset) {
if (offset < 0) {
offset += source_len + 1;
}
if (offset > source_len) {
offset = source_len;
}
else if (offset < 0) {
offset = 0;
}
}
/* Copy the part before -start */
Jim_AppendString(interp, resultObj, source_str, offset);
/*
* The following loop is to handle multiple matches within the
* same source string; each iteration handles one match and its
* corresponding substitution. If "-all" hasn't been specified
* then the loop body only gets executed once.
*/
n = source_len - offset;
p = source_str + offset;
do {
int match = regexec(regex, p, MAX_SUB_MATCHES, pmatch, regexec_flags);
if (match >= REG_BADPAT) {
char buf[100];
regerror(match, regex, buf, sizeof(buf));
Jim_SetResultFormatted(interp, "error while matching pattern: %s", buf);
return JIM_ERR;
}
if (match == REG_NOMATCH) {
break;
}
num_matches++;
/*
* Copy the portion of the source string before the match to the
* result variable.
*/
Jim_AppendString(interp, resultObj, p, pmatch[0].rm_so);
/*
* Append the subSpec (replace_str) argument to the variable, making appropriate
* substitutions. This code is a bit hairy because of the backslash
* conventions and because the code saves up ranges of characters in
* subSpec to reduce the number of calls to Jim_SetVar.
*/
for (j = 0; j < replace_len; j++) {
int idx;
int c = replace_str[j];
if (c == '&') {
idx = 0;
}
else if (c == '\\' && j < replace_len) {
c = replace_str[++j];
if ((c >= '0') && (c <= '9')) {
idx = c - '0';
}
else if ((c == '\\') || (c == '&')) {
Jim_AppendString(interp, resultObj, replace_str + j, 1);
continue;
}
else {
/* If the replacement is a trailing backslash, just replace with a backslash, otherwise
* with the literal backslash and the following character
*/
Jim_AppendString(interp, resultObj, replace_str + j - 1, (j == replace_len) ? 1 : 2);
continue;
}
}
else {
Jim_AppendString(interp, resultObj, replace_str + j, 1);
continue;
}
if ((idx < MAX_SUB_MATCHES) && pmatch[idx].rm_so != -1 && pmatch[idx].rm_eo != -1) {
Jim_AppendString(interp, resultObj, p + pmatch[idx].rm_so,
pmatch[idx].rm_eo - pmatch[idx].rm_so);
}
}
p += pmatch[0].rm_eo;
n -= pmatch[0].rm_eo;
/* If -all is not specified, or there is no source left, we are done */
if (!opt_all || n == 0) {
break;
}
/* An anchored pattern without -line must be done */
if ((regcomp_flags & REG_NEWLINE) == 0 && pattern[0] == '^') {
break;
}
/* If the pattern is empty, need to step forwards */
if (pattern[0] == '\0' && n) {
/* Need to copy the char we are moving over */
Jim_AppendString(interp, resultObj, p, 1);
p++;
n--;
}
regexec_flags |= REG_NOTBOL;
} while (n);
/*
* Copy the portion of the string after the last match to the
* result variable.
*/
Jim_AppendString(interp, resultObj, p, -1);
/* And now set or return the result variable */
if (argc - i == 4) {
result = Jim_SetVariable(interp, varname, resultObj);
if (result == JIM_OK) {
Jim_SetResultInt(interp, num_matches);
}
else {
Jim_FreeObj(interp, resultObj);
}
}
else {
Jim_SetResult(interp, resultObj);
result = JIM_OK;
}
return result;
}
int Jim_RegexpCmd(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
{
int opt_indices = 0;
int opt_all = 0;
int opt_inline = 0;
regex_t *regex;
int match, i, j;
int offset = 0;
regmatch_t *pmatch = NULL;
int source_len;
int result = JIM_OK;
const char *pattern;
const char *source_str;
int num_matches = 0;
int num_vars;
Jim_Obj *resultListObj = NULL;
int regcomp_flags = 0;
int eflags = 0;
int option;
enum {
OPT_INDICES, OPT_NOCASE, OPT_LINE, OPT_ALL, OPT_INLINE, OPT_START, OPT_END
};
static const char * const options[] = {
"-indices", "-nocase", "-line", "-all", "-inline", "-start", "--", NULL
};
if (argc < 3) {
wrongNumArgs:
Jim_WrongNumArgs(interp, 1, argv,
"?-switch ...? exp string ?matchVar? ?subMatchVar ...?");
return JIM_ERR;
}
for (i = 1; i < argc; i++) {
const char *opt = Jim_String(argv[i]);
if (*opt != '-') {
break;
}
if (Jim_GetEnum(interp, argv[i], options, &option, "switch", JIM_ERRMSG | JIM_ENUM_ABBREV) != JIM_OK) {
return JIM_ERR;
}
if (option == OPT_END) {
i++;
break;
}
switch (option) {
case OPT_INDICES:
opt_indices = 1;
break;
case OPT_NOCASE:
regcomp_flags |= REG_ICASE;
break;
case OPT_LINE:
regcomp_flags |= REG_NEWLINE;
break;
case OPT_ALL:
opt_all = 1;
break;
case OPT_INLINE:
opt_inline = 1;
break;
case OPT_START:
if (++i == argc) {
goto wrongNumArgs;
}
if (Jim_GetIndex(interp, argv[i], &offset) != JIM_OK) {
return JIM_ERR;
}
break;
}
}
if (argc - i < 2) {
goto wrongNumArgs;
}
regex = SetRegexpFromAny(interp, argv[i], regcomp_flags);
if (!regex) {
return JIM_ERR;
}
pattern = Jim_String(argv[i]);
source_str = Jim_GetString(argv[i + 1], &source_len);
num_vars = argc - i - 2;
if (opt_inline) {
if (num_vars) {
Jim_SetResultString(interp, "regexp match variables not allowed when using -inline",
-1);
result = JIM_ERR;
goto done;
}
num_vars = regex->re_nsub + 1;
}
pmatch = Jim_Alloc((num_vars + 1) * sizeof(*pmatch));
/* If an offset has been specified, adjust for that now.
* If it points past the end of the string, point to the terminating null
*/
if (offset) {
if (offset < 0) {
offset += source_len + 1;
}
if (offset > source_len) {
source_str += source_len;
}
else if (offset > 0) {
source_str += offset;
}
eflags |= REG_NOTBOL;
}
if (opt_inline) {
resultListObj = Jim_NewListObj(interp, NULL, 0);
}
next_match:
match = regexec(regex, source_str, num_vars + 1, pmatch, eflags);
if (match >= REG_BADPAT) {
char buf[100];
regerror(match, regex, buf, sizeof(buf));
Jim_SetResultFormatted(interp, "error while matching pattern: %s", buf);
result = JIM_ERR;
goto done;
}
if (match == REG_NOMATCH) {
goto done;
}
num_matches++;
if (opt_all && !opt_inline) {
/* Just count the number of matches, so skip the substitution h */
goto try_next_match;
}
/*
* If additional variable names have been specified, return
* index information in those variables.
*/
j = 0;
for (i += 2; opt_inline ? j < num_vars : i < argc; i++, j++) {
Jim_Obj *resultObj;
if (opt_indices) {
resultObj = Jim_NewListObj(interp, NULL, 0);
}
else {
resultObj = Jim_NewStringObj(interp, "", 0);
}
if (pmatch[j].rm_so == -1) {
if (opt_indices) {
Jim_ListAppendElement(interp, resultObj, Jim_NewIntObj(interp, -1));
Jim_ListAppendElement(interp, resultObj, Jim_NewIntObj(interp, -1));
}
}
else {
int len = pmatch[j].rm_eo - pmatch[j].rm_so;
if (opt_indices) {
Jim_ListAppendElement(interp, resultObj, Jim_NewIntObj(interp,
offset + pmatch[j].rm_so));
Jim_ListAppendElement(interp, resultObj, Jim_NewIntObj(interp,
offset + pmatch[j].rm_so + len - 1));
}
else {
Jim_AppendString(interp, resultObj, source_str + pmatch[j].rm_so, len);
}
}
if (opt_inline) {
Jim_ListAppendElement(interp, resultListObj, resultObj);
}
else {
/* And now set the result variable */
result = Jim_SetVariable(interp, argv[i], resultObj);
if (result != JIM_OK) {
Jim_FreeObj(interp, resultObj);
break;
}
}
}
try_next_match:
if (opt_all && (pattern[0] != '^' || (regcomp_flags & REG_NEWLINE)) && *source_str) {
if (pmatch[0].rm_eo) {
offset += pmatch[0].rm_eo;
source_str += pmatch[0].rm_eo;
}
else {
source_str++;
offset++;
}
if (*source_str) {
eflags = REG_NOTBOL;
goto next_match;
}
}
done:
if (result == JIM_OK) {
if (opt_inline) {
Jim_SetResult(interp, resultListObj);
}
else {
Jim_SetResultInt(interp, num_matches);
}
}
Jim_Free(pmatch);
return result;
}