[2dacab]: tcl / win / tclWinDde.c  Maximize  Restore  History

Download this file

1357 lines (1213 with data), 37.2 kB

   1
   2
   3
   4
   5
   6
   7
   8
   9
  10
  11
  12
  13
  14
  15
  16
  17
  18
  19
  20
  21
  22
  23
  24
  25
  26
  27
  28
  29
  30
  31
  32
  33
  34
  35
  36
  37
  38
  39
  40
  41
  42
  43
  44
  45
  46
  47
  48
  49
  50
  51
  52
  53
  54
  55
  56
  57
  58
  59
  60
  61
  62
  63
  64
  65
  66
  67
  68
  69
  70
  71
  72
  73
  74
  75
  76
  77
  78
  79
  80
  81
  82
  83
  84
  85
  86
  87
  88
  89
  90
  91
  92
  93
  94
  95
  96
  97
  98
  99
 100
 101
 102
 103
 104
 105
 106
 107
 108
 109
 110
 111
 112
 113
 114
 115
 116
 117
 118
 119
 120
 121
 122
 123
 124
 125
 126
 127
 128
 129
 130
 131
 132
 133
 134
 135
 136
 137
 138
 139
 140
 141
 142
 143
 144
 145
 146
 147
 148
 149
 150
 151
 152
 153
 154
 155
 156
 157
 158
 159
 160
 161
 162
 163
 164
 165
 166
 167
 168
 169
 170
 171
 172
 173
 174
 175
 176
 177
 178
 179
 180
 181
 182
 183
 184
 185
 186
 187
 188
 189
 190
 191
 192
 193
 194
 195
 196
 197
 198
 199
 200
 201
 202
 203
 204
 205
 206
 207
 208
 209
 210
 211
 212
 213
 214
 215
 216
 217
 218
 219
 220
 221
 222
 223
 224
 225
 226
 227
 228
 229
 230
 231
 232
 233
 234
 235
 236
 237
 238
 239
 240
 241
 242
 243
 244
 245
 246
 247
 248
 249
 250
 251
 252
 253
 254
 255
 256
 257
 258
 259
 260
 261
 262
 263
 264
 265
 266
 267
 268
 269
 270
 271
 272
 273
 274
 275
 276
 277
 278
 279
 280
 281
 282
 283
 284
 285
 286
 287
 288
 289
 290
 291
 292
 293
 294
 295
 296
 297
 298
 299
 300
 301
 302
 303
 304
 305
 306
 307
 308
 309
 310
 311
 312
 313
 314
 315
 316
 317
 318
 319
 320
 321
 322
 323
 324
 325
 326
 327
 328
 329
 330
 331
 332
 333
 334
 335
 336
 337
 338
 339
 340
 341
 342
 343
 344
 345
 346
 347
 348
 349
 350
 351
 352
 353
 354
 355
 356
 357
 358
 359
 360
 361
 362
 363
 364
 365
 366
 367
 368
 369
 370
 371
 372
 373
 374
 375
 376
 377
 378
 379
 380
 381
 382
 383
 384
 385
 386
 387
 388
 389
 390
 391
 392
 393
 394
 395
 396
 397
 398
 399
 400
 401
 402
 403
 404
 405
 406
 407
 408
 409
 410
 411
 412
 413
 414
 415
 416
 417
 418
 419
 420
 421
 422
 423
 424
 425
 426
 427
 428
 429
 430
 431
 432
 433
 434
 435
 436
 437
 438
 439
 440
 441
 442
 443
 444
 445
 446
 447
 448
 449
 450
 451
 452
 453
 454
 455
 456
 457
 458
 459
 460
 461
 462
 463
 464
 465
 466
 467
 468
 469
 470
 471
 472
 473
 474
 475
 476
 477
 478
 479
 480
 481
 482
 483
 484
 485
 486
 487
 488
 489
 490
 491
 492
 493
 494
 495
 496
 497
 498
 499
 500
 501
 502
 503
 504
 505
 506
 507
 508
 509
 510
 511
 512
 513
 514
 515
 516
 517
 518
 519
 520
 521
 522
 523
 524
 525
 526
 527
 528
 529
 530
 531
 532
 533
 534
 535
 536
 537
 538
 539
 540
 541
 542
 543
 544
 545
 546
 547
 548
 549
 550
 551
 552
 553
 554
 555
 556
 557
 558
 559
 560
 561
 562
 563
 564
 565
 566
 567
 568
 569
 570
 571
 572
 573
 574
 575
 576
 577
 578
 579
 580
 581
 582
 583
 584
 585
 586
 587
 588
 589
 590
 591
 592
 593
 594
 595
 596
 597
 598
 599
 600
 601
 602
 603
 604
 605
 606
 607
 608
 609
 610
 611
 612
 613
 614
 615
 616
 617
 618
 619
 620
 621
 622
 623
 624
 625
 626
 627
 628
 629
 630
 631
 632
 633
 634
 635
 636
 637
 638
 639
 640
 641
 642
 643
 644
 645
 646
 647
 648
 649
 650
 651
 652
 653
 654
 655
 656
 657
 658
 659
 660
 661
 662
 663
 664
 665
 666
 667
 668
 669
 670
 671
 672
 673
 674
 675
 676
 677
 678
 679
 680
 681
 682
 683
 684
 685
 686
 687
 688
 689
 690
 691
 692
 693
 694
 695
 696
 697
 698
 699
 700
 701
 702
 703
 704
 705
 706
 707
 708
 709
 710
 711
 712
 713
 714
 715
 716
 717
 718
 719
 720
 721
 722
 723
 724
 725
 726
 727
 728
 729
 730
 731
 732
 733
 734
 735
 736
 737
 738
 739
 740
 741
 742
 743
 744
 745
 746
 747
 748
 749
 750
 751
 752
 753
 754
 755
 756
 757
 758
 759
 760
 761
 762
 763
 764
 765
 766
 767
 768
 769
 770
 771
 772
 773
 774
 775
 776
 777
 778
 779
 780
 781
 782
 783
 784
 785
 786
 787
 788
 789
 790
 791
 792
 793
 794
 795
 796
 797
 798
 799
 800
 801
 802
 803
 804
 805
 806
 807
 808
 809
 810
 811
 812
 813
 814
 815
 816
 817
 818
 819
 820
 821
 822
 823
 824
 825
 826
 827
 828
 829
 830
 831
 832
 833
 834
 835
 836
 837
 838
 839
 840
 841
 842
 843
 844
 845
 846
 847
 848
 849
 850
 851
 852
 853
 854
 855
 856
 857
 858
 859
 860
 861
 862
 863
 864
 865
 866
 867
 868
 869
 870
 871
 872
 873
 874
 875
 876
 877
 878
 879
 880
 881
 882
 883
 884
 885
 886
 887
 888
 889
 890
 891
 892
 893
 894
 895
 896
 897
 898
 899
 900
 901
 902
 903
 904
 905
 906
 907
 908
 909
 910
 911
 912
 913
 914
 915
 916
 917
 918
 919
 920
 921
 922
 923
 924
 925
 926
 927
 928
 929
 930
 931
 932
 933
 934
 935
 936
 937
 938
 939
 940
 941
 942
 943
 944
 945
 946
 947
 948
 949
 950
 951
 952
 953
 954
 955
 956
 957
 958
 959
 960
 961
 962
 963
 964
 965
 966
 967
 968
 969
 970
 971
 972
 973
 974
 975
 976
 977
 978
 979
 980
 981
 982
 983
 984
 985
 986
 987
 988
 989
 990
 991
 992
 993
 994
 995
 996
 997
 998
 999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
/*
* tclWinDde.c --
*
* This file provides procedures that implement the "send"
* command, allowing commands to be passed from interpreter
* to interpreter.
*
* Copyright (c) 1997 by Sun Microsystems, Inc.
*
* See the file "license.terms" for information on usage and redistribution
* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
*
* RCS: @(#) $Id$
*/
#include "tclPort.h"
#include <ddeml.h>
/*
* TCL_STORAGE_CLASS is set unconditionally to DLLEXPORT because the
* Registry_Init declaration is in the source file itself, which is only
* accessed when we are building a library.
*/
#undef TCL_STORAGE_CLASS
#define TCL_STORAGE_CLASS DLLEXPORT
/*
* The following structure is used to keep track of the interpreters
* registered by this process.
*/
typedef struct RegisteredInterp {
struct RegisteredInterp *nextPtr;
/* The next interp this application knows
* about. */
char *name; /* Interpreter's name (malloc-ed). */
Tcl_Interp *interp; /* The interpreter attached to this name. */
} RegisteredInterp;
/*
* Used to keep track of conversations.
*/
typedef struct Conversation {
struct Conversation *nextPtr;
/* The next conversation in the list. */
RegisteredInterp *riPtr; /* The info we know about the conversation. */
HCONV hConv; /* The DDE handle for this conversation. */
Tcl_Obj *returnPackagePtr; /* The result package for this conversation. */
} Conversation;
typedef struct ThreadSpecificData {
Conversation *currentConversations;
/* A list of conversations currently
* being processed. */
RegisteredInterp *interpListPtr;
/* List of all interpreters registered
* in the current process. */
} ThreadSpecificData;
static Tcl_ThreadDataKey dataKey;
/*
* The following variables cannot be placed in thread-local storage.
* The Mutex ddeMutex guards access to the ddeInstance.
*/
static HSZ ddeServiceGlobal = 0;
static DWORD ddeInstance; /* The application instance handle given
* to us by DdeInitialize. */
static int ddeIsServer = 0;
#define TCL_DDE_VERSION "1.1"
#define TCL_DDE_PACKAGE_NAME "dde"
#define TCL_DDE_SERVICE_NAME "TclEval"
TCL_DECLARE_MUTEX(ddeMutex)
/*
* Forward declarations for procedures defined later in this file.
*/
static void DdeExitProc _ANSI_ARGS_((ClientData clientData));
static void DeleteProc _ANSI_ARGS_((ClientData clientData));
static Tcl_Obj * ExecuteRemoteObject _ANSI_ARGS_((
RegisteredInterp *riPtr,
Tcl_Obj *ddeObjectPtr));
static int MakeDdeConnection _ANSI_ARGS_((Tcl_Interp *interp,
char *name, HCONV *ddeConvPtr));
static HDDEDATA CALLBACK DdeServerProc _ANSI_ARGS_((UINT uType,
UINT uFmt, HCONV hConv, HSZ ddeTopic,
HSZ ddeItem, HDDEDATA hData, DWORD dwData1,
DWORD dwData2));
static void SetDdeError _ANSI_ARGS_((Tcl_Interp *interp));
int Tcl_DdeObjCmd(ClientData clientData, /* Used only for deletion */
Tcl_Interp *interp, /* The interp we are sending from */
int objc, /* Number of arguments */
Tcl_Obj *CONST objv[]); /* The arguments */
EXTERN int Dde_Init(Tcl_Interp *interp);
/*
*----------------------------------------------------------------------
*
* Dde_Init --
*
* This procedure initializes the dde command.
*
* Results:
* A standard Tcl result.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
int
Dde_Init(
Tcl_Interp *interp)
{
ThreadSpecificData *tsdPtr;
if (!Tcl_InitStubs(interp, "8.0", 0)) {
return TCL_ERROR;
}
Tcl_CreateObjCommand(interp, "dde", Tcl_DdeObjCmd, NULL, NULL);
tsdPtr = (ThreadSpecificData *)
Tcl_GetThreadData((Tcl_ThreadDataKey *) &dataKey, sizeof(ThreadSpecificData));
if (tsdPtr == NULL) {
tsdPtr = TCL_TSD_INIT(&dataKey);
tsdPtr->currentConversations = NULL;
tsdPtr->interpListPtr = NULL;
}
Tcl_CreateExitHandler(DdeExitProc, NULL);
return Tcl_PkgProvide(interp, TCL_DDE_PACKAGE_NAME, TCL_DDE_VERSION);
}
/*
*----------------------------------------------------------------------
*
* Initialize --
*
* Initialize the global DDE instance.
*
* Results:
* None.
*
* Side effects:
* Registers the DDE server proc.
*
*----------------------------------------------------------------------
*/
static void
Initialize(void)
{
int nameFound = 0;
ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
/*
* See if the application is already registered; if so, remove its
* current name from the registry. The deletion of the command
* will take care of disposing of this entry.
*/
if (tsdPtr->interpListPtr != NULL) {
nameFound = 1;
}
/*
* Make sure that the DDE server is there. This is done only once,
* add an exit handler tear it down.
*/
if (ddeInstance == 0) {
Tcl_MutexLock(&ddeMutex);
if (ddeInstance == 0) {
if (DdeInitialize(&ddeInstance, DdeServerProc,
CBF_SKIP_REGISTRATIONS
| CBF_SKIP_UNREGISTRATIONS
| CBF_FAIL_POKES, 0)
!= DMLERR_NO_ERROR) {
ddeInstance = 0;
}
}
Tcl_MutexUnlock(&ddeMutex);
}
if ((ddeServiceGlobal == 0) && (nameFound != 0)) {
Tcl_MutexLock(&ddeMutex);
if ((ddeServiceGlobal == 0) && (nameFound != 0)) {
ddeIsServer = 1;
Tcl_CreateExitHandler(DdeExitProc, NULL);
ddeServiceGlobal = DdeCreateStringHandle(ddeInstance, \
TCL_DDE_SERVICE_NAME, 0);
DdeNameService(ddeInstance, ddeServiceGlobal, 0L, DNS_REGISTER);
} else {
ddeIsServer = 0;
}
Tcl_MutexUnlock(&ddeMutex);
}
}
/*
*--------------------------------------------------------------
*
* DdeSetServerName --
*
* This procedure is called to associate an ASCII name with a Dde
* server. If the interpreter has already been named, the
* name replaces the old one.
*
* Results:
* The return value is the name actually given to the interp.
* This will normally be the same as name, but if name was already
* in use for a Dde Server then a name of the form "name #2" will
* be chosen, with a high enough number to make the name unique.
*
* Side effects:
* Registration info is saved, thereby allowing the "send" command
* to be used later to invoke commands in the application. In
* addition, the "send" command is created in the application's
* interpreter. The registration will be removed automatically
* if the interpreter is deleted or the "send" command is removed.
*
*--------------------------------------------------------------
*/
static char *
DdeSetServerName(
Tcl_Interp *interp,
char *name /* The name that will be used to
* refer to the interpreter in later
* "send" commands. Must be globally
* unique. */
)
{
int suffix, offset;
RegisteredInterp *riPtr, *prevPtr;
Tcl_DString dString;
ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
/*
* See if the application is already registered; if so, remove its
* current name from the registry. The deletion of the command
* will take care of disposing of this entry.
*/
for (riPtr = tsdPtr->interpListPtr, prevPtr = NULL; riPtr != NULL;
prevPtr = riPtr, riPtr = riPtr->nextPtr) {
if (riPtr->interp == interp) {
if (name != NULL) {
if (prevPtr == NULL) {
tsdPtr->interpListPtr = tsdPtr->interpListPtr->nextPtr;
} else {
prevPtr->nextPtr = riPtr->nextPtr;
}
break;
} else {
/*
* the name was NULL, so the caller is asking for
* the name of the current interp.
*/
return riPtr->name;
}
}
}
if (name == NULL) {
/*
* the name was NULL, so the caller is asking for
* the name of the current interp, but it doesn't
* have a name.
*/
return "";
}
/*
* Pick a name to use for the application. Use "name" if it's not
* already in use. Otherwise add a suffix such as " #2", trying
* larger and larger numbers until we eventually find one that is
* unique.
*/
suffix = 1;
offset = 0;
Tcl_DStringInit(&dString);
/*
* We have found a unique name. Now add it to the registry.
*/
riPtr = (RegisteredInterp *) ckalloc(sizeof(RegisteredInterp));
riPtr->interp = interp;
riPtr->name = ckalloc(strlen(name) + 1);
riPtr->nextPtr = tsdPtr->interpListPtr;
tsdPtr->interpListPtr = riPtr;
strcpy(riPtr->name, name);
Tcl_CreateObjCommand(interp, "dde", Tcl_DdeObjCmd,
(ClientData) riPtr, DeleteProc);
if (Tcl_IsSafe(interp)) {
Tcl_HideCommand(interp, "dde", "dde");
}
Tcl_DStringFree(&dString);
/*
* re-initialize with the new name
*/
Initialize();
return riPtr->name;
}
/*
*--------------------------------------------------------------
*
* DeleteProc
*
* This procedure is called when the command "dde" is destroyed.
*
* Results:
* none
*
* Side effects:
* The interpreter given by riPtr is unregistered.
*
*--------------------------------------------------------------
*/
static void
DeleteProc(clientData)
ClientData clientData; /* The interp we are deleting passed
* as ClientData. */
{
RegisteredInterp *riPtr = (RegisteredInterp *) clientData;
RegisteredInterp *searchPtr, *prevPtr;
ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
for (searchPtr = tsdPtr->interpListPtr, prevPtr = NULL;
(searchPtr != NULL) && (searchPtr != riPtr);
prevPtr = searchPtr, searchPtr = searchPtr->nextPtr) {
/*
* Empty loop body.
*/
}
if (searchPtr != NULL) {
if (prevPtr == NULL) {
tsdPtr->interpListPtr = tsdPtr->interpListPtr->nextPtr;
} else {
prevPtr->nextPtr = searchPtr->nextPtr;
}
}
ckfree(riPtr->name);
Tcl_EventuallyFree(clientData, TCL_DYNAMIC);
}
/*
*--------------------------------------------------------------
*
* ExecuteRemoteObject --
*
* Takes the package delivered by DDE and executes it in
* the server's interpreter.
*
* Results:
* A list Tcl_Obj * that describes what happened. The first
* element is the numerical return code (TCL_ERROR, etc.).
* The second element is the result of the script. If the
* return result was TCL_ERROR, then the third element
* will be the value of the global "errorCode", and the
* fourth will be the value of the global "errorInfo".
* The return result will have a refCount of 0.
*
* Side effects:
* A Tcl script is run, which can cause all kinds of other
* things to happen.
*
*--------------------------------------------------------------
*/
static Tcl_Obj *
ExecuteRemoteObject(
RegisteredInterp *riPtr, /* Info about this server. */
Tcl_Obj *ddeObjectPtr) /* The object to execute. */
{
Tcl_Obj *errorObjPtr;
Tcl_Obj *returnPackagePtr;
int result;
result = Tcl_EvalObjEx(riPtr->interp, ddeObjectPtr, TCL_EVAL_GLOBAL);
returnPackagePtr = Tcl_NewListObj(0, (Tcl_Obj **) NULL);
Tcl_ListObjAppendElement(NULL, returnPackagePtr,
Tcl_NewIntObj(result));
Tcl_ListObjAppendElement(NULL, returnPackagePtr,
Tcl_GetObjResult(riPtr->interp));
if (result == TCL_ERROR) {
errorObjPtr = Tcl_GetVar2Ex(riPtr->interp, "errorCode", NULL,
TCL_GLOBAL_ONLY);
Tcl_ListObjAppendElement(NULL, returnPackagePtr, errorObjPtr);
errorObjPtr = Tcl_GetVar2Ex(riPtr->interp, "errorInfo", NULL,
TCL_GLOBAL_ONLY);
Tcl_ListObjAppendElement(NULL, returnPackagePtr, errorObjPtr);
}
return returnPackagePtr;
}
/*
*--------------------------------------------------------------
*
* DdeServerProc --
*
* Handles all transactions for this server. Can handle
* execute, request, and connect protocols. Dde will
* call this routine when a client attempts to run a dde
* command using this server.
*
* Results:
* A DDE Handle with the result of the dde command.
*
* Side effects:
* Depending on which command is executed, arbitrary
* Tcl scripts can be run.
*
*--------------------------------------------------------------
*/
static HDDEDATA CALLBACK
DdeServerProc (
UINT uType, /* The type of DDE transaction we
* are performing. */
UINT uFmt, /* The format that data is sent or
* received. */
HCONV hConv, /* The conversation associated with the
* current transaction. */
HSZ ddeTopic, /* A string handle. Transaction-type
* dependent. */
HSZ ddeItem, /* A string handle. Transaction-type
* dependent. */
HDDEDATA hData, /* DDE data. Transaction-type dependent. */
DWORD dwData1, /* Transaction-dependent data. */
DWORD dwData2) /* Transaction-dependent data. */
{
Tcl_DString dString;
int len;
char *utilString;
Tcl_Obj *ddeObjectPtr;
HDDEDATA ddeReturn = NULL;
RegisteredInterp *riPtr;
Conversation *convPtr, *prevConvPtr;
ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
switch(uType) {
case XTYP_CONNECT:
/*
* Dde is trying to initialize a conversation with us. Check
* and make sure we have a valid topic.
*/
len = DdeQueryString(ddeInstance, ddeTopic, NULL, 0, 0);
Tcl_DStringInit(&dString);
Tcl_DStringSetLength(&dString, len);
utilString = Tcl_DStringValue(&dString);
DdeQueryString(ddeInstance, ddeTopic, utilString, len + 1,
CP_WINANSI);
for (riPtr = tsdPtr->interpListPtr; riPtr != NULL;
riPtr = riPtr->nextPtr) {
if (stricmp(utilString, riPtr->name) == 0) {
Tcl_DStringFree(&dString);
return (HDDEDATA) TRUE;
}
}
Tcl_DStringFree(&dString);
return (HDDEDATA) FALSE;
case XTYP_CONNECT_CONFIRM:
/*
* Dde has decided that we can connect, so it gives us a
* conversation handle. We need to keep track of it
* so we know which execution result to return in an
* XTYP_REQUEST.
*/
len = DdeQueryString(ddeInstance, ddeTopic, NULL, 0, 0);
Tcl_DStringInit(&dString);
Tcl_DStringSetLength(&dString, len);
utilString = Tcl_DStringValue(&dString);
DdeQueryString(ddeInstance, ddeTopic, utilString, len + 1,
CP_WINANSI);
for (riPtr = tsdPtr->interpListPtr; riPtr != NULL;
riPtr = riPtr->nextPtr) {
if (stricmp(riPtr->name, utilString) == 0) {
convPtr = (Conversation *) ckalloc(sizeof(Conversation));
convPtr->nextPtr = tsdPtr->currentConversations;
convPtr->returnPackagePtr = NULL;
convPtr->hConv = hConv;
convPtr->riPtr = riPtr;
tsdPtr->currentConversations = convPtr;
break;
}
}
Tcl_DStringFree(&dString);
return (HDDEDATA) TRUE;
case XTYP_DISCONNECT:
/*
* The client has disconnected from our server. Forget this
* conversation.
*/
for (convPtr = tsdPtr->currentConversations, prevConvPtr = NULL;
convPtr != NULL;
prevConvPtr = convPtr, convPtr = convPtr->nextPtr) {
if (hConv == convPtr->hConv) {
if (prevConvPtr == NULL) {
tsdPtr->currentConversations = convPtr->nextPtr;
} else {
prevConvPtr->nextPtr = convPtr->nextPtr;
}
if (convPtr->returnPackagePtr != NULL) {
Tcl_DecrRefCount(convPtr->returnPackagePtr);
}
ckfree((char *) convPtr);
break;
}
}
return (HDDEDATA) TRUE;
case XTYP_REQUEST:
/*
* This could be either a request for a value of a Tcl variable,
* or it could be the send command requesting the results of the
* last execute.
*/
if (uFmt != CF_TEXT) {
return (HDDEDATA) FALSE;
}
ddeReturn = (HDDEDATA) FALSE;
for (convPtr = tsdPtr->currentConversations; (convPtr != NULL)
&& (convPtr->hConv != hConv); convPtr = convPtr->nextPtr) {
/*
* Empty loop body.
*/
}
if (convPtr != NULL) {
char *returnString;
len = DdeQueryString(ddeInstance, ddeItem, NULL, 0,
CP_WINANSI);
Tcl_DStringInit(&dString);
Tcl_DStringSetLength(&dString, len);
utilString = Tcl_DStringValue(&dString);
DdeQueryString(ddeInstance, ddeItem, utilString,
len + 1, CP_WINANSI);
if (stricmp(utilString, "$TCLEVAL$EXECUTE$RESULT") == 0) {
returnString =
Tcl_GetStringFromObj(convPtr->returnPackagePtr, &len);
ddeReturn = DdeCreateDataHandle(ddeInstance,
returnString, len+1, 0, ddeItem, CF_TEXT,
0);
} else {
Tcl_Obj *variableObjPtr = Tcl_GetVar2Ex(
convPtr->riPtr->interp, utilString, NULL,
TCL_GLOBAL_ONLY);
if (variableObjPtr != NULL) {
returnString = Tcl_GetStringFromObj(variableObjPtr,
&len);
ddeReturn = DdeCreateDataHandle(ddeInstance,
returnString, len+1, 0, ddeItem, CF_TEXT, 0);
} else {
ddeReturn = NULL;
}
}
Tcl_DStringFree(&dString);
}
return ddeReturn;
case XTYP_EXECUTE: {
/*
* Execute this script. The results will be saved into
* a list object which will be retreived later. See
* ExecuteRemoteObject.
*/
Tcl_Obj *returnPackagePtr;
for (convPtr = tsdPtr->currentConversations; (convPtr != NULL)
&& (convPtr->hConv != hConv); convPtr = convPtr->nextPtr) {
/*
* Empty loop body.
*/
}
if (convPtr == NULL) {
return (HDDEDATA) DDE_FNOTPROCESSED;
}
utilString = (char *) DdeAccessData(hData, &len);
ddeObjectPtr = Tcl_NewStringObj(utilString, -1);
Tcl_IncrRefCount(ddeObjectPtr);
DdeUnaccessData(hData);
if (convPtr->returnPackagePtr != NULL) {
Tcl_DecrRefCount(convPtr->returnPackagePtr);
}
convPtr->returnPackagePtr = NULL;
returnPackagePtr =
ExecuteRemoteObject(convPtr->riPtr, ddeObjectPtr);
for (convPtr = tsdPtr->currentConversations; (convPtr != NULL)
&& (convPtr->hConv != hConv); convPtr = convPtr->nextPtr) {
/*
* Empty loop body.
*/
}
if (convPtr != NULL) {
Tcl_IncrRefCount(returnPackagePtr);
convPtr->returnPackagePtr = returnPackagePtr;
}
Tcl_DecrRefCount(ddeObjectPtr);
if (returnPackagePtr == NULL) {
return (HDDEDATA) DDE_FNOTPROCESSED;
} else {
return (HDDEDATA) DDE_FACK;
}
}
case XTYP_WILDCONNECT: {
/*
* Dde wants a list of services and topics that we support.
*/
HSZPAIR *returnPtr;
int i;
int numItems;
for (i = 0, riPtr = tsdPtr->interpListPtr; riPtr != NULL;
i++, riPtr = riPtr->nextPtr) {
/*
* Empty loop body.
*/
}
numItems = i;
ddeReturn = DdeCreateDataHandle(ddeInstance, NULL,
(numItems + 1) * sizeof(HSZPAIR), 0, 0, 0, 0);
returnPtr = (HSZPAIR *) DdeAccessData(ddeReturn, &len);
for (i = 0, riPtr = tsdPtr->interpListPtr; i < numItems;
i++, riPtr = riPtr->nextPtr) {
returnPtr[i].hszSvc = DdeCreateStringHandle(
ddeInstance, "TclEval", CP_WINANSI);
returnPtr[i].hszTopic = DdeCreateStringHandle(
ddeInstance, riPtr->name, CP_WINANSI);
}
returnPtr[i].hszSvc = NULL;
returnPtr[i].hszTopic = NULL;
DdeUnaccessData(ddeReturn);
return ddeReturn;
}
}
return NULL;
}
/*
*--------------------------------------------------------------
*
* DdeExitProc --
*
* Gets rid of our DDE server when we go away.
*
* Results:
* None.
*
* Side effects:
* The DDE server is deleted.
*
*--------------------------------------------------------------
*/
static void
DdeExitProc(
ClientData clientData) /* Not used in this handler. */
{
DdeNameService(ddeInstance, NULL, 0, DNS_UNREGISTER);
DdeUninitialize(ddeInstance);
ddeInstance = 0;
}
/*
*--------------------------------------------------------------
*
* MakeDdeConnection --
*
* This procedure is a utility used to connect to a DDE
* server when given a server name and a topic name.
*
* Results:
* A standard Tcl result.
*
*
* Side effects:
* Passes back a conversation through ddeConvPtr
*
*--------------------------------------------------------------
*/
static int
MakeDdeConnection(
Tcl_Interp *interp, /* Used to report errors. */
char *name, /* The connection to use. */
HCONV *ddeConvPtr)
{
HSZ ddeTopic, ddeService;
HCONV ddeConv;
ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
ddeService = DdeCreateStringHandle(ddeInstance, "TclEval", 0);
ddeTopic = DdeCreateStringHandle(ddeInstance, name, 0);
ddeConv = DdeConnect(ddeInstance, ddeService, ddeTopic, NULL);
DdeFreeStringHandle(ddeInstance, ddeService);
DdeFreeStringHandle(ddeInstance, ddeTopic);
if (ddeConv == (HCONV) NULL) {
if (interp != NULL) {
Tcl_AppendResult(interp, "no registered server named \"",
name, "\"", (char *) NULL);
}
return TCL_ERROR;
}
*ddeConvPtr = ddeConv;
return TCL_OK;
}
/*
*--------------------------------------------------------------
*
* SetDdeError --
*
* Sets the interp result to a cogent error message
* describing the last DDE error.
*
* Results:
* None.
*
*
* Side effects:
* The interp's result object is changed.
*
*--------------------------------------------------------------
*/
static void
SetDdeError(
Tcl_Interp *interp) /* The interp to put the message in.*/
{
Tcl_Obj *resultPtr = Tcl_GetObjResult(interp);
int err;
err = DdeGetLastError(ddeInstance);
switch (err) {
case DMLERR_DATAACKTIMEOUT:
case DMLERR_EXECACKTIMEOUT:
case DMLERR_POKEACKTIMEOUT:
Tcl_SetStringObj(resultPtr,
"remote interpreter did not respond", -1);
break;
case DMLERR_BUSY:
Tcl_SetStringObj(resultPtr, "remote server is busy", -1);
break;
case DMLERR_NOTPROCESSED:
Tcl_SetStringObj(resultPtr,
"remote server cannot handle this command", -1);
break;
default:
Tcl_SetStringObj(resultPtr, "dde command failed", -1);
}
}
/*
*--------------------------------------------------------------
*
* Tcl_DdeObjCmd --
*
* This procedure is invoked to process the "dde" Tcl command.
* See the user documentation for details on what it does.
*
* Results:
* A standard Tcl result.
*
* Side effects:
* See the user documentation.
*
*--------------------------------------------------------------
*/
int
Tcl_DdeObjCmd(
ClientData clientData, /* Used only for deletion */
Tcl_Interp *interp, /* The interp we are sending from */
int objc, /* Number of arguments */
Tcl_Obj *CONST objv[]) /* The arguments */
{
enum {
DDE_SERVERNAME,
DDE_EXECUTE,
DDE_POKE,
DDE_REQUEST,
DDE_SERVICES,
DDE_EVAL
};
static char *ddeCommands[] = {"servername", "execute", "poke",
"request", "services", "eval",
(char *) NULL};
static char *ddeOptions[] = {"-async", (char *) NULL};
int index, argIndex;
int async = 0;
int result = TCL_OK;
HSZ ddeService = NULL;
HSZ ddeTopic = NULL;
HSZ ddeItem = NULL;
HDDEDATA ddeData = NULL;
HDDEDATA ddeItemData = NULL;
HCONV hConv = NULL;
HSZ ddeCookie = 0;
char *serviceName, *topicName, *itemString, *dataString;
char *string;
int firstArg, length, dataLength;
DWORD ddeResult;
HDDEDATA ddeReturn;
RegisteredInterp *riPtr;
Tcl_Interp *sendInterp;
Tcl_Obj *objPtr;
ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
/*
* Initialize DDE server/client
*/
if (objc < 2) {
Tcl_WrongNumArgs(interp, 1, objv,
"?-async? serviceName topicName value");
return TCL_ERROR;
}
if (Tcl_GetIndexFromObj(interp, objv[1], ddeCommands, "command", 0,
&index) != TCL_OK) {
return TCL_ERROR;
}
switch (index) {
case DDE_SERVERNAME:
if ((objc != 3) && (objc != 2)) {
Tcl_WrongNumArgs(interp, 1, objv,
"servername ?serverName?");
return TCL_ERROR;
}
firstArg = (objc - 1);
break;
case DDE_EXECUTE:
if ((objc < 5) || (objc > 6)) {
Tcl_WrongNumArgs(interp, 1, objv,
"execute ?-async? serviceName topicName value");
return TCL_ERROR;
}
if (Tcl_GetIndexFromObj(NULL, objv[2], ddeOptions, "option", 0,
&argIndex) != TCL_OK) {
if (objc != 5) {
Tcl_WrongNumArgs(interp, 1, objv,
"execute ?-async? serviceName topicName value");
return TCL_ERROR;
}
async = 0;
firstArg = 2;
} else {
if (objc != 6) {
Tcl_WrongNumArgs(interp, 1, objv,
"execute ?-async? serviceName topicName value");
return TCL_ERROR;
}
async = 1;
firstArg = 3;
}
break;
case DDE_POKE:
if (objc != 6) {
Tcl_WrongNumArgs(interp, 1, objv,
"poke serviceName topicName item value");
return TCL_ERROR;
}
firstArg = 2;
break;
case DDE_REQUEST:
if (objc != 5) {
Tcl_WrongNumArgs(interp, 1, objv,
"request serviceName topicName value");
return TCL_ERROR;
}
firstArg = 2;
break;
case DDE_SERVICES:
if (objc != 4) {
Tcl_WrongNumArgs(interp, 1, objv,
"services serviceName topicName");
return TCL_ERROR;
}
firstArg = 2;
break;
case DDE_EVAL:
if (objc < 4) {
Tcl_WrongNumArgs(interp, 1, objv,
"eval ?-async? serviceName args");
return TCL_ERROR;
}
if (Tcl_GetIndexFromObj(NULL, objv[2], ddeOptions, "option", 0,
&argIndex) != TCL_OK) {
if (objc < 4) {
Tcl_WrongNumArgs(interp, 1, objv,
"eval ?-async? serviceName args");
return TCL_ERROR;
}
async = 0;
firstArg = 2;
} else {
if (objc < 5) {
Tcl_WrongNumArgs(interp, 1, objv,
"eval ?-async? serviceName args");
return TCL_ERROR;
}
async = 1;
firstArg = 3;
}
break;
}
Initialize();
if (firstArg != 1) {
serviceName = Tcl_GetStringFromObj(objv[firstArg], &length);
} else {
length = 0;
}
if (length == 0) {
serviceName = NULL;
} else if ((index != DDE_SERVERNAME) && (index != DDE_EVAL)) {
ddeService = DdeCreateStringHandle(ddeInstance, serviceName,
CP_WINANSI);
}
if ((index != DDE_SERVERNAME) &&(index != DDE_EVAL)) {
topicName = Tcl_GetStringFromObj(objv[firstArg + 1], &length);
if (length == 0) {
topicName = NULL;
} else {
ddeTopic = DdeCreateStringHandle(ddeInstance,
topicName, CP_WINANSI);
}
}
switch (index) {
case DDE_SERVERNAME: {
serviceName = DdeSetServerName(interp, serviceName);
if (serviceName != NULL) {
Tcl_SetStringObj(Tcl_GetObjResult(interp),
serviceName, -1);
} else {
Tcl_ResetResult(interp);
}
break;
}
case DDE_EXECUTE: {
dataString = Tcl_GetStringFromObj(objv[firstArg + 2], &dataLength);
if (dataLength == 0) {
Tcl_SetStringObj(Tcl_GetObjResult(interp),
"cannot execute null data", -1);
result = TCL_ERROR;
break;
}
hConv = DdeConnect(ddeInstance, ddeService, ddeTopic,
NULL);
DdeFreeStringHandle (ddeInstance, ddeService) ;
DdeFreeStringHandle (ddeInstance, ddeTopic) ;
if (hConv == NULL) {
SetDdeError(interp);
result = TCL_ERROR;
break;
}
ddeData = DdeCreateDataHandle(ddeInstance, dataString,
dataLength+1, 0, 0, CF_TEXT, 0);
if (ddeData != NULL) {
if (async) {
DdeClientTransaction((LPBYTE) ddeData, 0xFFFFFFFF, hConv, 0,
CF_TEXT, XTYP_EXECUTE, TIMEOUT_ASYNC, &ddeResult);
DdeAbandonTransaction(ddeInstance, hConv,
ddeResult);
} else {
ddeReturn = DdeClientTransaction((LPBYTE) ddeData, 0xFFFFFFFF,
hConv, 0, CF_TEXT, XTYP_EXECUTE, 30000, NULL);
if (ddeReturn == 0) {
SetDdeError(interp);
result = TCL_ERROR;
}
}
DdeFreeDataHandle(ddeData);
} else {
SetDdeError(interp);
result = TCL_ERROR;
}
break;
}
case DDE_REQUEST: {
itemString = Tcl_GetStringFromObj(objv[firstArg + 2], &length);
if (length == 0) {
Tcl_SetStringObj(Tcl_GetObjResult(interp),
"cannot request value of null data", -1);
return TCL_ERROR;
}
hConv = DdeConnect(ddeInstance, ddeService, ddeTopic, NULL);
DdeFreeStringHandle (ddeInstance, ddeService) ;
DdeFreeStringHandle (ddeInstance, ddeTopic) ;
if (hConv == NULL) {
SetDdeError(interp);
result = TCL_ERROR;
} else {
Tcl_Obj *returnObjPtr;
ddeItem = DdeCreateStringHandle(ddeInstance,
itemString, CP_WINANSI);
if (ddeItem != NULL) {
ddeData = DdeClientTransaction(NULL, 0, hConv, ddeItem,
CF_TEXT, XTYP_REQUEST, 5000, NULL);
if (ddeData == NULL) {
SetDdeError(interp);
result = TCL_ERROR;
} else {
dataString = DdeAccessData(ddeData, &dataLength);
returnObjPtr = Tcl_NewStringObj(dataString, -1);
DdeUnaccessData(ddeData);
DdeFreeDataHandle(ddeData);
Tcl_SetObjResult(interp, returnObjPtr);
}
} else {
SetDdeError(interp);
result = TCL_ERROR;
}
}
break;
}
case DDE_POKE: {
itemString = Tcl_GetStringFromObj(objv[firstArg + 2], &length);
if (length == 0) {
Tcl_SetStringObj(Tcl_GetObjResult(interp),
"cannot have a null item", -1);
return TCL_ERROR;
}
dataString = Tcl_GetStringFromObj(objv[firstArg + 3], &length);
hConv = DdeConnect(ddeInstance, ddeService, ddeTopic, NULL);
DdeFreeStringHandle (ddeInstance,ddeService) ;
DdeFreeStringHandle (ddeInstance, ddeTopic) ;
if (hConv == NULL) {
SetDdeError(interp);
result = TCL_ERROR;
} else {
ddeItem = DdeCreateStringHandle(ddeInstance, itemString, \
CP_WINANSI);
if (ddeItem != NULL) {
ddeData = DdeClientTransaction(dataString,length+1, \
hConv, ddeItem,
CF_TEXT, XTYP_POKE, 5000, NULL);
if (ddeData == NULL) {
SetDdeError(interp);
result = TCL_ERROR;
}
} else {
SetDdeError(interp);
result = TCL_ERROR;
}
}
break;
}
case DDE_SERVICES: {
HCONVLIST hConvList;
CONVINFO convInfo;
Tcl_Obj *convListObjPtr, *elementObjPtr;
Tcl_DString dString;
char *name;
convInfo.cb = sizeof(CONVINFO);
hConvList = DdeConnectList(ddeInstance, ddeService,
ddeTopic, 0, NULL);
DdeFreeStringHandle (ddeInstance,ddeService) ;
DdeFreeStringHandle (ddeInstance, ddeTopic) ;
hConv = 0;
convListObjPtr = Tcl_NewListObj(0, (Tcl_Obj **) NULL);
Tcl_DStringInit(&dString);
while (hConv = DdeQueryNextServer(hConvList, hConv), hConv != 0) {
elementObjPtr = Tcl_NewListObj(0, (Tcl_Obj **) NULL);
DdeQueryConvInfo(hConv, QID_SYNC, &convInfo);
length = DdeQueryString(ddeInstance,
convInfo.hszSvcPartner, NULL, 0, CP_WINANSI);
Tcl_DStringSetLength(&dString, length);
name = Tcl_DStringValue(&dString);
DdeQueryString(ddeInstance, convInfo.hszSvcPartner,
name, length + 1, CP_WINANSI);
Tcl_ListObjAppendElement(interp, elementObjPtr,
Tcl_NewStringObj(name, length));
length = DdeQueryString(ddeInstance, convInfo.hszTopic,
NULL, 0, CP_WINANSI);
Tcl_DStringSetLength(&dString, length);
name = Tcl_DStringValue(&dString);
DdeQueryString(ddeInstance, convInfo.hszTopic, name,
length + 1, CP_WINANSI);
Tcl_ListObjAppendElement(interp, elementObjPtr,
Tcl_NewStringObj(name, length));
Tcl_ListObjAppendElement(interp, convListObjPtr, elementObjPtr);
}
DdeDisconnectList(hConvList);
Tcl_SetObjResult(interp, convListObjPtr);
Tcl_DStringFree(&dString);
break;
}
case DDE_EVAL: {
objc -= (async + 3);
/*
old code; cast strictly speaking not allowed by C standard:
((Tcl_Obj **) objv) += (async + 3);
*/
objv = ((Tcl_Obj **) objv) + (async + 3);
/*
* See if the target interpreter is local. If so, execute
* the command directly without going through the DDE server.
* Don't exchange objects between interps. The target interp could
* compile an object, producing a bytecode structure that refers to
* other objects owned by the target interp. If the target interp
* is then deleted, the bytecode structure would be referring to
* deallocated objects.
*/
for (riPtr = tsdPtr->interpListPtr; riPtr != NULL; riPtr
= riPtr->nextPtr) {
if (stricmp(serviceName, riPtr->name) == 0) {
break;
}
}
if (riPtr != NULL) {
/*
* This command is to a local interp. No need to go through
* the server.
*/
Tcl_Preserve((ClientData) riPtr);
sendInterp = riPtr->interp;
Tcl_Preserve((ClientData) sendInterp);
/*
* Don't exchange objects between interps. The target interp would
* compile an object, producing a bytecode structure that refers to
* other objects owned by the target interp. If the target interp
* is then deleted, the bytecode structure would be referring to
* deallocated objects.
*/
if (objc == 1) {
result = Tcl_EvalObjEx(sendInterp, objv[0], TCL_EVAL_GLOBAL);
} else {
objPtr = Tcl_ConcatObj(objc, objv);
Tcl_IncrRefCount(objPtr);
result = Tcl_EvalObjEx(sendInterp, objPtr, TCL_EVAL_GLOBAL);
Tcl_DecrRefCount(objPtr);
}
if (interp != sendInterp) {
if (result == TCL_ERROR) {
/*
* An error occurred, so transfer error information from the
* destination interpreter back to our interpreter.
*/
Tcl_ResetResult(interp);
objPtr = Tcl_GetVar2Ex(sendInterp, "errorInfo", NULL,
TCL_GLOBAL_ONLY);
string = Tcl_GetStringFromObj(objPtr, &length);
Tcl_AddObjErrorInfo(interp, string, length);
objPtr = Tcl_GetVar2Ex(sendInterp, "errorCode", NULL,
TCL_GLOBAL_ONLY);
Tcl_SetObjErrorCode(interp, objPtr);
}
Tcl_SetObjResult(interp, Tcl_GetObjResult(sendInterp));
}
Tcl_Release((ClientData) riPtr);
Tcl_Release((ClientData) sendInterp);
} else {
/*
* This is a non-local request. Send the script to the server and poll
* it for a result.
*/
if (MakeDdeConnection(interp, serviceName, &hConv) != TCL_OK) {
goto error;
}
objPtr = Tcl_ConcatObj(objc, objv);
string = Tcl_GetStringFromObj(objPtr, &length);
ddeItemData = DdeCreateDataHandle(ddeInstance, string, length+1, 0, 0,
CF_TEXT, 0);
if (async) {
ddeData = DdeClientTransaction((LPBYTE) ddeItemData, 0xFFFFFFFF, hConv, 0,
CF_TEXT, XTYP_EXECUTE, TIMEOUT_ASYNC, &ddeResult);
DdeAbandonTransaction(ddeInstance, hConv, ddeResult);
} else {
ddeData = DdeClientTransaction((LPBYTE) ddeItemData, 0xFFFFFFFF, hConv, 0,
CF_TEXT, XTYP_EXECUTE, 30000, NULL);
if (ddeData != 0) {
ddeCookie = DdeCreateStringHandle(ddeInstance,
"$TCLEVAL$EXECUTE$RESULT", CP_WINANSI);
ddeData = DdeClientTransaction(NULL, 0, hConv, ddeCookie,
CF_TEXT, XTYP_REQUEST, 30000, NULL);
}
}
Tcl_DecrRefCount(objPtr);
if (ddeData == 0) {
SetDdeError(interp);
goto errorNoResult;
}
if (async == 0) {
Tcl_Obj *resultPtr;
/*
* The return handle has a two or four element list in it. The first
* element is the return code (TCL_OK, TCL_ERROR, etc.). The
* second is the result of the script. If the return code is TCL_ERROR,
* then the third element is the value of the variable "errorCode",
* and the fourth is the value of the variable "errorInfo".
*/
resultPtr = Tcl_NewObj();
length = DdeGetData(ddeData, NULL, 0, 0);
Tcl_SetObjLength(resultPtr, length);
string = Tcl_GetString(resultPtr);
DdeGetData(ddeData, string, length, 0);
Tcl_SetObjLength(resultPtr, strlen(string));
if (Tcl_ListObjIndex(NULL, resultPtr, 0, &objPtr) != TCL_OK) {
Tcl_DecrRefCount(resultPtr);
goto error;
}
if (Tcl_GetIntFromObj(NULL, objPtr, &result) != TCL_OK) {
Tcl_DecrRefCount(resultPtr);
goto error;
}
if (result == TCL_ERROR) {
Tcl_ResetResult(interp);
if (Tcl_ListObjIndex(NULL, resultPtr, 3, &objPtr) != TCL_OK) {
Tcl_DecrRefCount(resultPtr);
goto error;
}
length = -1;
string = Tcl_GetStringFromObj(objPtr, &length);
Tcl_AddObjErrorInfo(interp, string, length);
Tcl_ListObjIndex(NULL, resultPtr, 2, &objPtr);
Tcl_SetObjErrorCode(interp, objPtr);
}
if (Tcl_ListObjIndex(NULL, resultPtr, 1, &objPtr) != TCL_OK) {
Tcl_DecrRefCount(resultPtr);
goto error;
}
Tcl_SetObjResult(interp, objPtr);
Tcl_DecrRefCount(resultPtr);
}
}
}
}
if (ddeCookie != NULL) {
DdeFreeStringHandle(ddeInstance, ddeCookie);
}
if (ddeItem != NULL) {
DdeFreeStringHandle(ddeInstance, ddeItem);
}
if (ddeItemData != NULL) {
DdeFreeDataHandle(ddeItemData);
}
if (ddeData != NULL) {
DdeFreeDataHandle(ddeData);
}
if (hConv != NULL) {
DdeDisconnect(hConv);
}
return result;
error:
Tcl_SetStringObj(Tcl_GetObjResult(interp),
"invalid data returned from server", -1);
errorNoResult:
if (ddeCookie != NULL) {
DdeFreeStringHandle(ddeInstance, ddeCookie);
}
if (ddeItem != NULL) {
DdeFreeStringHandle(ddeInstance, ddeItem);
}
if (ddeItemData != NULL) {
DdeFreeDataHandle(ddeItemData);
}
if (ddeData != NULL) {
DdeFreeDataHandle(ddeData);
}
if (hConv != NULL) {
DdeDisconnect(hConv);
}
return TCL_ERROR;
}