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jim-mk.cpp
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jim-mk.cpp
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#include <string.h>
#include <ctype.h>
#include <new>
#include <mk4.h>
#include "jim.h"
#include "jimautoconf.h"
#include "jim-subcmd.h"
extern "C" { /* The whole file is essentially C */
#define MK_PROPERTY_BINARY 'B'
#define MK_PROPERTY_INT 'I'
#define MK_PROPERTY_LONG 'L'
#define MK_PROPERTY_FLOAT 'F'
#define MK_PROPERTY_DOUBLE 'D'
#define MK_PROPERTY_STRING 'S'
#define MK_PROPERTY_VIEW 'V'
#define MK_MODE_ORIGINAL -1
#define MK_MODE_READONLY 0
#define MK_MODE_READWRITE 1
#define MK_MODE_EXTEND 2
#define MK_CMD_LEN 32
#define JIM_CURSOR_SPACE (35+JIM_REFERENCE_TAGLEN + 1 + 20)
#define JIM_POSITION_SPACE 32
#define MK_VERSION_SPACE 16
#define JIM_MK_DESCR_LEN 64 /* Default, will be reallocated if needed */
#define isnamech(c) ( (c) && !strchr(":,[^]!", (c)) )
#ifndef max
#define max(x, y) ((x) >= (y) ? (x) : (y))
#endif
/* utilities */
static int JimCheckMkName(Jim_Interp *interp, Jim_Obj *name, const char *type);
static const char *JimMkTypeName(char type);
static Jim_Obj *JimFromMkDescription(Jim_Interp *interp, const char *descr, const char **endPtr);
static int JimToMkDescription(Jim_Interp *interp, Jim_Obj *obj, char **descrPtr);
static Jim_Obj *JimGetMkValue(Jim_Interp *interp, c4_Cursor cur, const c4_Property &prop);
static int JimSetMkValue(Jim_Interp *interp, c4_Cursor cur, const c4_Property &prop, Jim_Obj *obj);
static int JimPipelineBoundary(int argc, Jim_Obj *const *argv);
/* property object */
static Jim_Obj *JimNewPropertyObj (Jim_Interp *interp, c4_Property prop);
static int JimGetProperty (Jim_Interp *interp, Jim_Obj *obj,
c4_View view, const char *what, const c4_Property **propPtr);
static int JimGetPropertyTyped (Jim_Interp *interp, Jim_Obj *obj,
char type, const c4_Property **propPtr);
static int JimGetNewProperty (Jim_Interp *interp, Jim_Obj *obj,
c4_View view, char type, const c4_Property **propPtr);
static int JimGetProperties (Jim_Interp *interp, int objc, Jim_Obj *const *objv,
c4_View view, c4_View *propsPtr);
static Jim_Obj *JimViewPropertiesList (Jim_Interp *interp, c4_View view);
/* cursor object */
static int JimGetPosition (Jim_Interp *interp, Jim_Obj *obj, c4_View view, int *indexPtr);
static int JimGetCursor (Jim_Interp *interp, Jim_Obj *obj, c4_Cursor *curPtr);
static int JimGetCursorView (Jim_Interp *interp, Jim_Obj *obj,
Jim_Obj **viewObjPtr);
static int JimCursorPos (Jim_Interp *interp, Jim_Obj *obj, Jim_Obj **posObjPtr);
static int JimIncrCursor (Jim_Interp *interp, Jim_Obj *obj, int offset);
static int JimSeekCursor (Jim_Interp *interp, Jim_Obj *obj, Jim_Obj *posObj);
/* Also accepts JIM_ERRMSG */
#define JIM_CURSOR_GET (1 << JIM_PRIV_FLAG_SHIFT)
#define JIM_CURSOR_SET (2 << JIM_PRIV_FLAG_SHIFT)
#define JIM_CURSOR_INSERT (4 << JIM_PRIV_FLAG_SHIFT)
static int JimCheckCursor (Jim_Interp *interp, Jim_Obj *curObj, int flags);
/* view handle */
static Jim_Obj *JimNewViewObj (Jim_Interp *interp, c4_View view);
static int JimGetView (Jim_Interp *interp, Jim_Obj *obj, c4_View *viewPtr);
static void JimPinView (Jim_Interp *interp, Jim_Obj *obj);
/* -------------------------------------------------------------------------
* Utilities
* ------------------------------------------------------------------------- */
static int JimCheckMkName(Jim_Interp *interp, Jim_Obj *name, const char *type)
{
const char *s;
int i, len;
s = Jim_GetString(name, &len);
if (len > 0 && s[0] == '-')
goto err;
for (i = 0; i < len; i++) {
if (!isnamech(s[i]))
goto err;
}
return JIM_OK;
err:
Jim_SetResultFormatted(interp, "expected %s name but got \"%#s\"", type ? type : "property", name);
return JIM_ERR;
}
static const char *const jim_mktype_options[] = {
"-integer",
"-long",
"-float",
"-double",
"-string",
"-subview",
/* FIXME "-binary", */
0
};
static const char *const jim_mktype_names[] = {
"integer",
"long",
"float",
"double",
"string",
"subview",
/* FIXME "binary", */
0
};
static const char jim_mktype_types[] = {
MK_PROPERTY_INT,
MK_PROPERTY_LONG,
MK_PROPERTY_FLOAT,
MK_PROPERTY_DOUBLE,
MK_PROPERTY_STRING,
MK_PROPERTY_VIEW,
/* MK_PROPERTY_BINARY, */
};
#define JIM_MKTYPES ((int)(sizeof(jim_mktype_types) / sizeof(jim_mktype_types[0])))
static const char *JimMkTypeName(char type)
{
int i;
for (i = 0; i < JIM_MKTYPES; i++) {
if (type == jim_mktype_types[i])
return jim_mktype_names[i];
}
return "(unknown type)";
}
static Jim_Obj *JimFromMkDescription(Jim_Interp *interp, const char *descr, const char **endPtr)
{
Jim_Obj *result;
const char *delim;
result = Jim_NewListObj(interp, NULL, 0);
for (;;) {
if (*descr == ']') {
descr++;
break;
}
else if (*descr == '\0')
break;
else if (*descr == ',')
descr++;
delim = strpbrk(descr, ",:[]");
/* JimPanic((!delim, "Invalid Metakit description string")); */
Jim_ListAppendElement(interp, result,
Jim_NewStringObj(interp, descr, delim - descr));
if (delim[0] == '[') {
Jim_ListAppendElement(interp, result,
JimFromMkDescription(interp, delim + 1, &descr));
}
else if (delim[0] == ':') {
Jim_ListAppendElement(interp, result,
Jim_NewStringObj(interp, JimMkTypeName(delim[1]), -1));
descr = delim + 2;
}
else {
/* Seems that Metakit never generates descriptions without type
* tags, but let's handle this just to be safe
*/
Jim_ListAppendElement(interp, result,
Jim_NewStringObj(interp, JimMkTypeName(MK_PROPERTY_STRING), -1));
}
}
if (endPtr)
*endPtr = descr;
return result;
}
/* This allocates the buffer once per user call and stores it in a static
* variable. Recursive calls are distinguished by descrPtr == NULL.
*/
static int JimToMkDescription(Jim_Interp *interp, Jim_Obj *descrObj, char **descrPtr)
{
static char *descr, *outPtr;
static int bufSize;
#define ENLARGE(size) do { \
if ((descr - outPtr) + (size) > bufSize) { \
bufSize = max(2*bufSize, (descr - outPtr) + (size)); \
descr = (char *)Jim_Realloc(descr, bufSize); \
} \
} while(0)
int i, count;
Jim_Obj *name, *struc;
const char *rep;
int len;
count = Jim_ListLength(interp, descrObj);
if (count % 2) {
Jim_SetResultString(interp,
"view description must have an even number of elements", -1);
return JIM_ERR;
}
if (descrPtr) {
descr = (char *)Jim_Alloc(bufSize = JIM_MK_DESCR_LEN);
outPtr = descr;
}
for (i = 0; i < count; i += 2) {
Jim_ListIndex(interp, descrObj, i, &name, 0);
Jim_ListIndex(interp, descrObj, i + 1, &struc, 0);
if (JimCheckMkName(interp, name, NULL) != JIM_OK)
goto err;
rep = Jim_GetString(name, &len);
ENLARGE(len + 3); /* At least :T, or [], */
memcpy(outPtr, rep, len);
outPtr += len;
if (Jim_ListLength(interp, struc) == 1) {
int idx;
if (Jim_GetEnum(interp, struc, jim_mktype_names, &idx,
"property type", JIM_ERRMSG | JIM_ENUM_ABBREV) != JIM_OK)
goto err;
*outPtr++ = ':';
*outPtr++ = jim_mktype_types[idx];
}
else {
*outPtr++ = '[';
if (JimToMkDescription(interp, struc, NULL) != JIM_OK)
goto err;
ENLARGE(2); /* bracket, comma */
*outPtr++ = ']';
}
*outPtr++ = ',';
}
*(--outPtr) = '\0';
#undef ENLARGE
if (descrPtr) {
*descrPtr = (char *)Jim_Realloc(descr, strlen(descr) + 1);
descr = NULL; /* Safety measure */
}
return JIM_OK;
err:
if (descrPtr)
Jim_Free(descr);
return JIM_ERR;
}
static Jim_Obj *JimGetMkValue(Jim_Interp *interp, c4_Cursor cur, const c4_Property &prop)
{
switch (prop.Type()) {
case MK_PROPERTY_INT:
return Jim_NewIntObj(interp, ((c4_IntProp &)prop).Get(*cur));
case MK_PROPERTY_LONG:
return Jim_NewIntObj(interp, ((c4_LongProp &)prop).Get(*cur));
case MK_PROPERTY_FLOAT:
return Jim_NewDoubleObj(interp, ((c4_FloatProp &)prop).Get(*cur));
case MK_PROPERTY_DOUBLE:
return Jim_NewDoubleObj(interp, ((c4_DoubleProp &)prop).Get(*cur));
case MK_PROPERTY_STRING:
return Jim_NewStringObj(interp, ((c4_StringProp &)prop).Get(*cur), -1);
case MK_PROPERTY_VIEW:
return JimNewViewObj(interp, ((c4_ViewProp &)prop).Get(*cur));
case MK_PROPERTY_BINARY:
/* FIXME */
default:
/* FIXME Something more meaningful here? */
return Jim_NewEmptyStringObj(interp);
}
}
static int JimSetMkValue(Jim_Interp *interp, c4_Cursor cur, const c4_Property &prop, Jim_Obj *obj)
{
switch (prop.Type()) {
case MK_PROPERTY_INT: {
jim_wide value;
if (Jim_GetWide(interp, obj, &value) != JIM_OK)
return JIM_ERR;
((c4_IntProp &)prop).Set(*cur, value);
return JIM_OK;
}
case MK_PROPERTY_LONG: {
jim_wide value;
if (Jim_GetWide(interp, obj, &value) != JIM_OK)
return JIM_ERR;
((c4_LongProp &)prop).Set(*cur, value);
return JIM_OK;
}
case MK_PROPERTY_FLOAT: {
double value;
if (Jim_GetDouble(interp, obj, &value) != JIM_OK)
return JIM_ERR;
((c4_FloatProp &)prop).Set(*cur, value);
return JIM_OK;
}
case MK_PROPERTY_DOUBLE: {
double value;
if (Jim_GetDouble(interp, obj, &value) != JIM_OK)
return JIM_ERR;
((c4_DoubleProp &)prop).Set(*cur, value);
return JIM_OK;
}
case MK_PROPERTY_STRING: {
int len;
const char *rep;
rep = Jim_GetString(obj, &len);
if (len != (int)strlen(rep)) {
Jim_SetResultString(interp, "null characters are not allowed in Metakit strings", -1);
return JIM_ERR;
}
((c4_StringProp &)prop).Set(*cur, rep);
return JIM_OK;
}
case MK_PROPERTY_VIEW: {
c4_View value;
if (JimGetView(interp, obj, &value) != JIM_OK)
return JIM_ERR;
((c4_ViewProp &)prop).Set(*cur, value);
}
case MK_PROPERTY_BINARY:
/* FIXME */
default:
Jim_SetResultString(interp, "unsupported Metakit type", -1);
return JIM_ERR;
}
}
static int JimPipelineBoundary(int argc, Jim_Obj *const *argv) {
const char *rep;
int pipe, len;
for (pipe = 0; pipe < argc; pipe++) {
rep = Jim_GetString(argv[pipe], &len);
if (len == 1 && rep[0] == '|')
break;
}
return pipe;
}
/* -------------------------------------------------------------------------
* Property object
* ------------------------------------------------------------------------- */
#define JimPropertyValue(o) ((c4_Property *)((o)->internalRep.ptr))
static void FreePropertyInternalRep(Jim_Interp *interp, Jim_Obj *obj)
{
delete JimPropertyValue(obj);
}
static void DupPropertyInternalRep(Jim_Interp *interp, Jim_Obj *oldObj, Jim_Obj *newObj)
{
newObj->internalRep.ptr = new c4_Property(*JimPropertyValue(oldObj));
newObj->typePtr = oldObj->typePtr;
}
static void UpdateStringOfProperty(Jim_Obj* obj)
{
const char *name = JimPropertyValue(obj)->Name();
int len = strlen(name);
obj->bytes = (char *) Jim_Alloc(len + 1);
memcpy(obj->bytes, name, len + 1);
obj->length = len;
}
static Jim_ObjType propertyObjType = {
"mk.property",
FreePropertyInternalRep,
DupPropertyInternalRep,
UpdateStringOfProperty,
JIM_TYPE_NONE
};
static int JimGetProperty(Jim_Interp *interp, Jim_Obj *obj, c4_View view, const char *name, const c4_Property **propPtr)
{
int index;
if (obj->typePtr == &propertyObjType) {
index = view.FindProperty(JimPropertyValue(obj)->GetId());
}
else {
if (JimCheckMkName(interp, obj, name) != JIM_OK)
return JIM_ERR;
index = view.FindPropIndexByName(Jim_String(obj));
}
if (index != -1) {
*propPtr = &view.NthProperty(index);
return JIM_OK;
}
else {
Jim_SetResultFormatted(interp, "%s \"%#s\" does not exist",
name ? name : "property", obj);
return JIM_ERR;
}
}
static int JimGetPropertyTyped(Jim_Interp *interp, Jim_Obj *obj, char type, const c4_Property **propPtr)
{
c4_Property *prop;
if (obj->typePtr == &propertyObjType) {
if (JimPropertyValue(obj)->Type() != type) {
/* coerce the property type */
prop = new c4_Property(type, JimPropertyValue(obj)->Name());
delete JimPropertyValue(obj);
obj->internalRep.ptr = prop;
}
}
else {
if (JimCheckMkName(interp, obj, NULL) != JIM_OK)
return JIM_ERR;
prop = new c4_Property(type, Jim_String(obj));
Jim_FreeIntRep(interp, obj);
obj->typePtr = &propertyObjType;
obj->internalRep.ptr = (void *)prop;
}
*propPtr = JimPropertyValue(obj);
return JIM_OK;
}
static int JimGetNewProperty(Jim_Interp *interp, Jim_Obj *obj, c4_View view, char type, const c4_Property **propPtr)
{
const c4_Property *newp, *prop;
if (JimGetPropertyTyped(interp, obj, type, &newp) != JIM_OK)
return JIM_ERR;
prop = &view.NthProperty(view.AddProperty(*newp));
if (prop->Type() != newp->Type()) {
Jim_SetResultFormatted(interp, "property \"%#s\" is %s, not %s",
obj, JimMkTypeName(prop->Type()), JimMkTypeName(newp->Type()));
return JIM_ERR;
}
*propPtr = prop;
return JIM_OK;
}
static int JimGetProperties(Jim_Interp *interp, int objc, Jim_Obj *const *objv, c4_View view, c4_View *propsPtr)
{
int i;
const c4_Property *prop;
c4_View props;
for (i = 0; i < objc; i++) {
if (JimGetProperty(interp, objv[i], view, NULL, &prop) != JIM_OK)
return JIM_ERR;
props.AddProperty(*prop);
}
*propsPtr = props;
return JIM_OK;
}
static Jim_Obj *JimNewPropertyObj(Jim_Interp *interp, c4_Property prop)
{
Jim_Obj *obj;
obj = Jim_NewObj(interp);
obj->typePtr = &propertyObjType;
obj->bytes = NULL;
obj->internalRep.ptr = new c4_Property(prop);
return obj;
}
/* -------------------------------------------------------------------------
* Cursor object
* ------------------------------------------------------------------------- */
/* Position ---------------------------------------------------------------- */
/* A normal position if endFlag == 0; otherwise an offset from end+1 (!) */
typedef struct MkPosition {
int index;
int endFlag;
} MkPosition;
/* This is mostly the same as SetIndexFromAny, but preserves more information
* and allows multiple [+-]integer parts.
*/
static int GetPosition(Jim_Interp *interp, Jim_Obj *obj, MkPosition *posPtr)
{
MkPosition pos;
const char *rep;
char *end;
int sign, offset;
rep = Jim_String(obj);
if (strncmp(rep, "end", 3) == 0) {
pos.endFlag = 1;
pos.index = -1;
rep += 3;
}
else {
pos.endFlag = 0;
pos.index = strtol(rep, &end, 10);
if (end == rep)
goto err;
rep = end;
}
while ((rep[0] == '+') || (rep[0] == '-')) {
sign = (rep[0] == '+' ? 1 : -1);
rep++;
offset = strtol(rep, &end, 10);
if (end == rep)
goto err;
pos.index += sign * offset;
rep = end;
}
while (isspace(UCHAR(*rep)))
rep++;
if (*rep != '\0')
goto err;
*posPtr = pos;
return JIM_OK;
err:
Jim_SetResultFormatted(interp, "expected cursor position but got \"%#s\"", obj);
return JIM_ERR;
}
static int PositionIndex(const MkPosition *posPtr, c4_View view)
{
if (posPtr->endFlag)
return view.GetSize() + posPtr->index;
else
return posPtr->index;
}
static int JimGetPosition(Jim_Interp *interp, Jim_Obj *obj, c4_View view, int *indexPtr)
{
MkPosition pos;
if (GetPosition(interp, obj, &pos) != JIM_OK)
return JIM_ERR;
*indexPtr = PositionIndex(&pos, view);
return JIM_OK;
}
/* Cursor type ------------------------------------------------------------- */
typedef struct MkCursor {
MkPosition pos;
Jim_Obj *viewObj;
} MkCursor;
#define JimCursorValue(obj) ((MkCursor *)(obj->internalRep.ptr))
static void FreeCursorInternalRep(Jim_Interp *interp, Jim_Obj *obj)
{
Jim_DecrRefCount(interp, JimCursorValue(obj)->viewObj);
Jim_Free(obj->internalRep.ptr);
}
static void DupCursorInternalRep(Jim_Interp *interp, Jim_Obj *oldObj, Jim_Obj *newObj)
{
newObj->internalRep.ptr = Jim_Alloc(sizeof(MkCursor));
*JimCursorValue(newObj) = *JimCursorValue(oldObj);
Jim_IncrRefCount(JimCursorValue(oldObj)->viewObj);
newObj->typePtr = oldObj->typePtr;
}
static void UpdateStringOfCursor(Jim_Obj *obj)
{
char buf[JIM_CURSOR_SPACE + 1];
MkCursor *curPtr = JimCursorValue(obj);
int idx, len;
len = snprintf(buf, JIM_CURSOR_SPACE + 1, "%s!", Jim_String(curPtr->viewObj));
if (curPtr->pos.endFlag) {
idx = curPtr->pos.index + 1;
if (idx == 0)
len += snprintf(buf + len, JIM_CURSOR_SPACE + 1 - len, "end");
else
len += snprintf(buf + len, JIM_CURSOR_SPACE + 1 - len, "end%+d", idx);
}
else {
len += snprintf(buf + len, JIM_CURSOR_SPACE + 1 - len, "%d",
curPtr->pos.index);
}
obj->bytes = (char *)Jim_Alloc(len + 1);
memcpy(obj->bytes, buf, len + 1);
obj->length = len;
}
static Jim_ObjType cursorObjType = {
"mk.cursor",
FreeCursorInternalRep,
DupCursorInternalRep,
UpdateStringOfCursor,
JIM_TYPE_REFERENCES
};
static int SetCursorFromAny(Jim_Interp *interp, Jim_Obj *obj)
{
const char *rep, *delim;
int len;
Jim_Obj *posObj;
MkCursor cur;
rep = Jim_GetString(obj, &len);
delim = strrchr(rep, '!');
if (!delim) {
Jim_SetResultFormatted(interp, "expected cursor but got \"%#s\"", obj);
return JIM_ERR;
}
cur.viewObj = Jim_NewStringObj(interp, rep, delim - rep);
posObj = Jim_NewStringObj(interp, delim + 1, len - (delim - rep) - 1);
if (GetPosition(interp, posObj, &cur.pos) != JIM_OK) {
Jim_FreeNewObj(interp, posObj);
Jim_FreeNewObj(interp, cur.viewObj);
return JIM_ERR;
}
Jim_FreeIntRep(interp, obj);
Jim_FreeNewObj(interp, posObj);
Jim_IncrRefCount(cur.viewObj);
obj->typePtr = &cursorObjType;
obj->internalRep.ptr = Jim_Alloc(sizeof(MkCursor));
*JimCursorValue(obj) = cur;
return JIM_OK;
}
/* Functions --------------------------------------------------------------- */
static int JimCursorPos(Jim_Interp *interp, Jim_Obj *obj, Jim_Obj **posObjPtr)
{
if (obj->typePtr != &cursorObjType && SetCursorFromAny(interp, obj) != JIM_OK)
return JIM_ERR;
*posObjPtr = Jim_NewStringObj(interp, strrchr(Jim_String(obj), '!') + 1, -1);
return JIM_OK;
}
static int JimGetCursorView(Jim_Interp *interp, Jim_Obj *obj, Jim_Obj **viewObjPtr)
{
if (obj->typePtr != &cursorObjType && SetCursorFromAny(interp, obj) != JIM_OK)
return JIM_ERR;
*viewObjPtr = JimCursorValue(obj)->viewObj;
return JIM_OK;
}
static int JimGetCursor(Jim_Interp *interp, Jim_Obj *obj, c4_Cursor *curPtr)
{
c4_View view;
if (obj->typePtr != &cursorObjType && SetCursorFromAny(interp, obj) != JIM_OK)
return JIM_ERR;
if (JimGetView(interp, JimCursorValue(obj)->viewObj, &view) != JIM_OK)
return JIM_ERR;
if (curPtr)
*curPtr = &view[PositionIndex(&JimCursorValue(obj)->pos, view)];
return JIM_OK;
}
static int JimIncrCursor(Jim_Interp *interp, Jim_Obj *obj, int offset)
{
/* JimPanic((Jim_IsShared(obj), "JimIncrCursor called with shared object")) */
if (obj->typePtr != &cursorObjType && SetCursorFromAny(interp, obj) != JIM_OK)
return JIM_ERR;
Jim_InvalidateStringRep(obj);
JimCursorValue(obj)->pos.index += offset;
return JIM_OK;
}
static int JimSeekCursor(Jim_Interp *interp, Jim_Obj *obj, Jim_Obj *posObj)
{
/* JimPanic((Jim_IsShared(obj), "JimSeekCursor called with shared object")) */
if (obj->typePtr != &cursorObjType && SetCursorFromAny(interp, obj) != JIM_OK)
return JIM_ERR;
Jim_InvalidateStringRep(obj);
return GetPosition(interp, posObj, &JimCursorValue(obj)->pos);
}
static int JimCheckCursor(Jim_Interp *interp, Jim_Obj *curObj, int flags)
{
static c4_View nullView;
c4_Cursor cur = &nullView[0];
int size;
if (JimGetCursor(interp, curObj, &cur) != JIM_OK)
return JIM_ERR;
size = (*cur).Container().GetSize();
if ((flags & JIM_CURSOR_GET) && (cur._index < 0 || cur._index >= size)) {
if (flags & JIM_ERRMSG) {
Jim_SetResultFormatted(interp,
"cursor \"%#s\" does not point to an existing row", curObj);
}
return JIM_ERR;
}
else if ((flags & JIM_CURSOR_SET) && cur._index < 0) {
if (flags & JIM_ERRMSG) {
Jim_SetResultFormatted(interp,
"cursor \"%#s\" points before start of view", curObj);
}
return JIM_ERR;
}
else if ((flags & JIM_CURSOR_INSERT) && (cur._index < 0 || cur._index > size)) {
if (flags & JIM_ERRMSG) {
Jim_SetResultFormatted(interp,
"cursor \"%#s\" does not point to a valid insert position", curObj);
}
return JIM_ERR;
}
return JIM_OK;
}
/* Records ----------------------------------------------------------------- */
static int cursor_cmd_get(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
{
c4_View view;
c4_Cursor cur = &view[0];
if (JimGetCursor(interp, argv[0], &cur) != JIM_OK)
return JIM_ERR;
if (JimCheckCursor(interp, argv[0], JIM_ERRMSG | JIM_CURSOR_GET) != JIM_OK)
return JIM_ERR;
view = (*cur).Container();
if (argc == 1) { /* Return all properties */
int i, count;
Jim_Obj *result;
result = Jim_NewListObj(interp, NULL, 0);
count = view.NumProperties();
for (i = 0; i < count; i++) {
c4_Property prop = view.NthProperty(i);
Jim_ListAppendElement(interp, result, JimNewPropertyObj(interp, prop));
Jim_ListAppendElement(interp, result, JimGetMkValue(interp, cur, prop));
}
Jim_SetResult(interp, result);
return JIM_OK;
}
else { /* Return a single property */
const c4_Property *propPtr;
int pipe;
pipe = JimPipelineBoundary(argc, argv);
if (pipe == 2) {
/* No type annotation, existing property */
if (JimGetProperty(interp, argv[1], view, NULL, &propPtr) != JIM_OK)
return JIM_ERR;
}
else if (pipe == 3) {
/* Explicit type annotation; the property may be new */
int idx;
if (Jim_GetEnum(interp, argv[1], jim_mktype_options, &idx,
"property type", JIM_ERRMSG | JIM_ENUM_ABBREV) != JIM_OK)
return JIM_ERR;
if (JimGetNewProperty(interp, argv[2], view, jim_mktype_types[idx], &propPtr) != JIM_OK)
return JIM_ERR;
}
else {
Jim_WrongNumArgs(interp, 0, NULL, "cursor get ?-type? ?prop?");
return JIM_ERR;
}
Jim_SetResult(interp, JimGetMkValue(interp, cur, *propPtr));
if (pipe == argc)
return JIM_OK;
else
return Jim_EvalObjPrefix(interp, Jim_GetResult(interp), argc - pipe - 1, argv + pipe + 1);
}
}
static int cursor_cmd_set(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
{
c4_View view;
c4_Cursor cur = &view[0];
const c4_Property *propPtr;
int i, oldSize;
if (JimGetCursor(interp, argv[0], &cur) != JIM_OK)
return JIM_ERR;
if (JimCheckCursor(interp, argv[0], JIM_ERRMSG | JIM_CURSOR_SET) != JIM_OK)
return JIM_ERR;
view = (*cur).Container();
oldSize = view.GetSize();
if (cur._index >= oldSize)
view.SetSize(cur._index + 1);
if (argc == 2) {
/* Update everything except subviews from a dictionary in argv[1].
* No new properties are permitted.
*/
int objc;
Jim_Obj **objv;
if (Jim_DictPairs(interp, argv[1], &objv, &objc) != JIM_OK)
goto err;
for (i = 0; i < objc; i += 2) {
if (JimGetProperty(interp, objv[i], view, NULL, &propPtr) != JIM_OK ||
JimSetMkValue(interp, cur, *propPtr, objv[i+1]) != JIM_OK)
{
Jim_Free(objv);
goto err;
}
}
}
else {
/* Update everything from argv[1..]. New properties are permitted if
* explicitly typed.
*/
for (i = 1; i < argc; i += 2) {
if (Jim_String(argv[i])[0] == '-') {
int idx;
if (i + 2 >= argc) {
Jim_WrongNumArgs(interp, 2, argv, "?-type? prop value ?...?");
goto err;
}
if (Jim_GetEnum(interp, argv[i], jim_mktype_options, &idx,
"property type", JIM_ERRMSG | JIM_ENUM_ABBREV) != JIM_OK)
goto err;
if (JimGetNewProperty(interp, argv[i+1], view, jim_mktype_types[idx], &propPtr) != JIM_OK)
goto err;
i++;
}
else {
if (i + 1 >= argc) {
Jim_WrongNumArgs(interp, 2, argv, "?-type? prop value ?...?");
goto err;
}
if (JimGetProperty(interp, argv[i], view, NULL, &propPtr) != JIM_OK)
goto err;
}
if (JimSetMkValue(interp, cur, *propPtr, argv[i+1]) != JIM_OK)
goto err;
}
}
return JIM_OK;
err:
view.SetSize(oldSize);
return JIM_ERR;
}
static int cursor_cmd_insert(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
{
c4_View view;
c4_Cursor cur = &view[0];
jim_wide count;
if (JimGetCursor(interp, argv[0], &cur) != JIM_OK)
return JIM_ERR;
if (JimCheckCursor(interp, argv[0], JIM_ERRMSG | JIM_CURSOR_INSERT) != JIM_OK)
return JIM_ERR;
view = (*cur).Container();
if (argc == 1)
count = 1;
else {
if (Jim_GetWide(interp, argv[1], &count) != JIM_OK)
return JIM_ERR;
}
if (count > 0) {
c4_Row empty;
view.InsertAt(cur._index, empty, (int)count);
}
Jim_SetEmptyResult(interp);
return JIM_OK;
}
static int cursor_cmd_remove(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
{
c4_View view;
c4_Cursor cur = &view[0];
int pos;
jim_wide count;
if (JimGetCursor(interp, argv[0], &cur) != JIM_OK)
return JIM_ERR;
if (JimCheckCursor(interp, argv[0], JIM_ERRMSG | JIM_CURSOR_SET) != JIM_OK)
return JIM_ERR;
view = (*cur).Container();
pos = cur._index;
if (argc == 1)
count = 1;
else {
if (Jim_GetWide(interp, argv[1], &count) != JIM_OK)
return JIM_ERR;
}
if (pos + count < view.GetSize())
count = view.GetSize() - pos;
if (pos < view.GetSize())
view.RemoveAt(pos, (int)count);
return JIM_OK;
}
/* Attributes -------------------------------------------------------------- */
static int cursor_cmd_view(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
{
Jim_Obj *viewObj;
if (JimGetCursorView(interp, argv[0], &viewObj) != JIM_OK)
return JIM_ERR;