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/*
* Smithsonian Astrophysical Observatory, Cambridge, MA, USA
* This code has been modified under the terms listed below and is made
* available under the same terms.
*/
/*
* Copyright 1991-2004 George A Howlett.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include <string.h>
#include <stdarg.h>
#include <stdlib.h>
#include <iostream>
#include <sstream>
#include <iomanip>
using namespace std;
#include <tcl.h>
extern "C" {
#include "bltInt.h"
#include "bltSwitch.h"
};
#define COUNT_NNEG 0
#define COUNT_POS 1
#define COUNT_ANY 2
static char* Blt_Strdup(const char *string)
{
size_t size = strlen(string) + 1;
char* ptr = (char*)malloc(size * sizeof(char));
if (ptr != NULL) {
strcpy(ptr, string);
}
return ptr;
}
static int Blt_GetCountFromObj(Tcl_Interp* interp, Tcl_Obj *objPtr, int check,
long *valuePtr)
{
long count;
if (Tcl_GetLongFromObj(interp, objPtr, &count) != TCL_OK)
return TCL_ERROR;
switch (check) {
case COUNT_NNEG:
if (count < 0) {
Tcl_AppendResult(interp, "bad value \"", Tcl_GetString(objPtr),
"\": can't be negative", (char *)NULL);
return TCL_ERROR;
}
break;
case COUNT_POS:
if (count <= 0) {
Tcl_AppendResult(interp, "bad value \"", Tcl_GetString(objPtr),
"\": must be positive", (char *)NULL);
return TCL_ERROR;
}
break;
case COUNT_ANY:
break;
}
*valuePtr = count;
return TCL_OK;
}
static void DoHelp(Tcl_Interp* interp, Blt_SwitchSpec *specs)
{
Tcl_DString ds;
Blt_SwitchSpec *sp;
Tcl_DStringInit(&ds);
Tcl_DStringAppend(&ds, "following switches are available:", -1);
for (sp = specs; sp->type != BLT_SWITCH_END; sp++) {
Tcl_DStringAppend(&ds, "\n ", 4);
Tcl_DStringAppend(&ds, sp->switchName, -1);
Tcl_DStringAppend(&ds, " ", 1);
Tcl_DStringAppend(&ds, sp->help, -1);
}
Tcl_AppendResult(interp, Tcl_DStringValue(&ds), (char *)NULL);
Tcl_DStringFree(&ds);
}
static Blt_SwitchSpec *FindSwitchSpec(Tcl_Interp* interp, Blt_SwitchSpec *specs,
const char *name, int length,
int needFlags, int hateFlags)
{
Blt_SwitchSpec *sp;
char c; /* First character of current argument. */
Blt_SwitchSpec *matchPtr; /* Matching spec, or NULL. */
c = name[1];
matchPtr = NULL;
for (sp = specs; sp->type != BLT_SWITCH_END; sp++) {
if (sp->switchName == NULL) {
continue;
}
if (((sp->flags & needFlags) != needFlags) || (sp->flags & hateFlags)) {
continue;
}
if ((sp->switchName[1] != c) ||
(strncmp(sp->switchName, name, length) != 0)) {
continue;
}
if (sp->switchName[length] == '\0') {
return sp; /* Stop on a perfect match. */
}
if (matchPtr != NULL) {
Tcl_AppendResult(interp, "ambiguous switch \"", name, "\"\n",
(char *) NULL);
DoHelp(interp, specs);
return NULL;
}
matchPtr = sp;
}
if (strcmp(name, "-help") == 0) {
DoHelp(interp, specs);
return NULL;
}
if (matchPtr == NULL) {
Tcl_AppendResult(interp, "unknown switch \"", name, "\"\n",
(char *)NULL);
DoHelp(interp, specs);
return NULL;
}
return matchPtr;
}
static int DoSwitch(Tcl_Interp* interp, Blt_SwitchSpec *sp,
Tcl_Obj *objPtr, void *record)
{
do {
char *ptr = (char *)record + sp->offset;
switch (sp->type) {
case BLT_SWITCH_BOOLEAN:
{
int boo;
if (Tcl_GetBooleanFromObj(interp, objPtr, &boo) != TCL_OK) {
return TCL_ERROR;
}
if (sp->mask > 0) {
if (boo) {
*((int *)ptr) |= sp->mask;
} else {
*((int *)ptr) &= ~sp->mask;
}
} else {
*((int *)ptr) = boo;
}
}
break;
case BLT_SWITCH_DOUBLE:
if (Tcl_GetDoubleFromObj(interp, objPtr, (double *)ptr) != TCL_OK) {
return TCL_ERROR;
}
break;
case BLT_SWITCH_OBJ:
Tcl_IncrRefCount(objPtr);
*(Tcl_Obj **)ptr = objPtr;
break;
case BLT_SWITCH_FLOAT:
{
double value;
if (Tcl_GetDoubleFromObj(interp, objPtr, &value) != TCL_OK) {
return TCL_ERROR;
}
*(float *)ptr = (float)value;
}
break;
case BLT_SWITCH_INT:
if (Tcl_GetIntFromObj(interp, objPtr, (int *)ptr) != TCL_OK) {
return TCL_ERROR;
}
break;
case BLT_SWITCH_INT_NNEG:
{
long value;
if (Blt_GetCountFromObj(interp, objPtr, COUNT_NNEG,
&value) != TCL_OK) {
return TCL_ERROR;
}
*(int *)ptr = (int)value;
}
break;
case BLT_SWITCH_INT_POS:
{
long value;
if (Blt_GetCountFromObj(interp, objPtr, COUNT_POS,
&value) != TCL_OK) {
return TCL_ERROR;
}
*(int *)ptr = (int)value;
}
break;
case BLT_SWITCH_LIST:
{
int argc;
if (Tcl_SplitList(interp, Tcl_GetString(objPtr), &argc,
(const char ***)ptr) != TCL_OK) {
return TCL_ERROR;
}
}
break;
case BLT_SWITCH_LONG:
if (Tcl_GetLongFromObj(interp, objPtr, (long *)ptr) != TCL_OK) {
return TCL_ERROR;
}
break;
case BLT_SWITCH_LONG_NNEG:
{
long value;
if (Blt_GetCountFromObj(interp, objPtr, COUNT_NNEG,
&value) != TCL_OK) {
return TCL_ERROR;
}
*(long *)ptr = value;
}
break;
case BLT_SWITCH_LONG_POS:
{
long value;
if (Blt_GetCountFromObj(interp, objPtr, COUNT_POS, &value)
!= TCL_OK) {
return TCL_ERROR;
}
*(long *)ptr = value;
}
break;
case BLT_SWITCH_STRING:
{
char *value;
value = Tcl_GetString(objPtr);
value = (*value == '\0') ? NULL : Blt_Strdup(value);
if (*(char **)ptr != NULL) {
free(*(char **)ptr);
}
*(char **)ptr = value;
}
break;
case BLT_SWITCH_CUSTOM:
if ((*sp->customPtr->parseProc)(sp->customPtr->clientData, interp,
sp->switchName, objPtr, (char *)record, sp->offset, sp->flags)
!= TCL_OK) {
return TCL_ERROR;
}
break;
default:
ostringstream str;
str << sp->type << ends;
Tcl_AppendResult(interp, "bad switch table: unknown type \"",
str.str().c_str(), "\"", NULL);
return TCL_ERROR;
}
sp++;
} while ((sp->switchName == NULL) && (sp->type != BLT_SWITCH_END));
return TCL_OK;
}
int Blt_ParseSwitches(Tcl_Interp* interp, Blt_SwitchSpec *specs,
int objc, Tcl_Obj* const objv[], void *record,
int flags)
{
Blt_SwitchSpec *sp;
int needFlags = flags & ~(BLT_SWITCH_USER_BIT - 1);
int hateFlags = 0;
/*
* Pass 1: Clear the change flags on all the specs so that we
* can check it later.
*/
for (sp = specs; sp->type != BLT_SWITCH_END; sp++)
sp->flags &= ~BLT_SWITCH_SPECIFIED;
/*
* Pass 2: Process the arguments that match entries in the specs.
* It's an error if the argument doesn't match anything.
*/
int count;
for (count = 0; count < objc; count++) {
char *arg;
int length;
arg = Tcl_GetStringFromObj(objv[count], &length);
if (flags & BLT_SWITCH_OBJV_PARTIAL) {
/*
* If the argument doesn't start with a '-' (not a switch) or is
* '--', stop processing and return the number of arguments
* comsumed.
*/
if (arg[0] != '-') {
return count;
}
if ((arg[1] == '-') && (arg[2] == '\0')) {
return count + 1; /* include the "--" in the count. */
}
}
sp = FindSwitchSpec(interp, specs, arg, length, needFlags, hateFlags);
if (sp == NULL) {
return -1;
}
if (sp->type == BLT_SWITCH_BITMASK) {
char *ptr;
ptr = (char *)record + sp->offset;
*((int *)ptr) |= sp->mask;
} else if (sp->type == BLT_SWITCH_BITMASK_INVERT) {
char *ptr;
ptr = (char *)record + sp->offset;
*((int *)ptr) &= ~sp->mask;
} else if (sp->type == BLT_SWITCH_VALUE) {
char *ptr;
ptr = (char *)record + sp->offset;
*((int *)ptr) = sp->mask;
} else {
count++;
if (count == objc) {
Tcl_AppendResult(interp, "value for \"", arg, "\" missing",
(char *) NULL);
return -1;
}
if (DoSwitch(interp, sp, objv[count], record) != TCL_OK) {
char msg[200];
snprintf(msg, 200, "\n (processing \"%.40s\" switch)",
sp->switchName);
Tcl_AddErrorInfo(interp, msg);
return -1;
}
}
sp->flags |= BLT_SWITCH_SPECIFIED;
}
return count;
}
void Blt_FreeSwitches(Blt_SwitchSpec *specs, void *record, int needFlags)
{
for (Blt_SwitchSpec *sp = specs; sp->type != BLT_SWITCH_END; sp++) {
if ((sp->flags & needFlags) == needFlags) {
char *ptr = (char *)record + sp->offset;
switch (sp->type) {
case BLT_SWITCH_STRING:
case BLT_SWITCH_LIST:
if (*((char **) ptr) != NULL) {
free(*((char **) ptr));
*((char **) ptr) = NULL;
}
break;
case BLT_SWITCH_OBJ:
if (*((Tcl_Obj **) ptr) != NULL) {
Tcl_DecrRefCount(*((Tcl_Obj **)ptr));
*((Tcl_Obj **) ptr) = NULL;
}
break;
case BLT_SWITCH_CUSTOM:
if ((*(char **)ptr != NULL) &&
(sp->customPtr->freeProc != NULL)) {
(*sp->customPtr->freeProc)((char *)record, sp->offset,
sp->flags);
}
break;
default:
break;
}
}
}
}
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