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authordkf <donal.k.fellows@manchester.ac.uk>2012-04-15 21:05:43 (GMT)
committerdkf <donal.k.fellows@manchester.ac.uk>2012-04-15 21:05:43 (GMT)
commit56756de072eaf847bdb2025a06a551e4c6906720 (patch)
treefa83e6ab1bdb24a47aa9d95bfd2d9a801009f16c /generic/tclZlib.c
parent03a345e86778e38b3e0bc91e1f860c2355f46245 (diff)
downloadtcl-56756de072eaf847bdb2025a06a551e4c6906720.zip
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Refactor some [zlib] subcommands into their own functions
Diffstat (limited to 'generic/tclZlib.c')
-rw-r--r--generic/tclZlib.c567
1 files changed, 320 insertions, 247 deletions
diff --git a/generic/tclZlib.c b/generic/tclZlib.c
index 9b231df..f88e0e1 100644
--- a/generic/tclZlib.c
+++ b/generic/tclZlib.c
@@ -147,11 +147,15 @@ static void ConvertError(Tcl_Interp *interp, int code);
static void ExtractHeader(gz_header *headerPtr, Tcl_Obj *dictObj);
static int GenerateHeader(Tcl_Interp *interp, Tcl_Obj *dictObj,
GzipHeader *headerPtr, int *extraSizePtr);
+static int ZlibPushSubcmd(Tcl_Interp *interp, int objc,
+ Tcl_Obj *const objv[]);
static Tcl_Channel ZlibStackChannelTransform(Tcl_Interp *interp,
int mode, int format, int level,
Tcl_Channel channel, Tcl_Obj *gzipHeaderDictPtr,
Tcl_Obj *compDictObj);
static void ZlibStreamCleanup(ZlibStreamHandle *zshPtr);
+static int ZlibStreamSubcmd(Tcl_Interp *interp, int objc,
+ Tcl_Obj *const objv[]);
static void ZlibTransformTimerKill(ZlibChannelData *cd);
static void ZlibTransformTimerRun(ClientData clientData);
static void ZlibTransformTimerSetup(ZlibChannelData *cd);
@@ -1712,11 +1716,10 @@ ZlibCmd(
int objc,
Tcl_Obj *const objv[])
{
- int command, dlen, mode, format, i, option, level = -1;
+ int command, dlen, i, option, level = -1;
unsigned start, buffersize = 0;
- Tcl_ZlibStream zh;
Byte *data;
- Tcl_Obj *headerDictObj, *headerVarObj;
+ Tcl_Obj *headerDictObj;
const char *extraInfoStr = NULL;
static const char *const commands[] = {
"adler32", "compress", "crc32", "decompress", "deflate", "gunzip",
@@ -1727,14 +1730,6 @@ ZlibCmd(
CMD_ADLER, CMD_COMPRESS, CMD_CRC, CMD_DECOMPRESS, CMD_DEFLATE,
CMD_GUNZIP, CMD_GZIP, CMD_INFLATE, CMD_PUSH, CMD_STREAM
};
- static const char *const stream_formats[] = {
- "compress", "decompress", "deflate", "gunzip", "gzip", "inflate",
- NULL
- };
- enum zlibFormats {
- FMT_COMPRESS, FMT_DECOMPRESS, FMT_DEFLATE, FMT_GUNZIP, FMT_GZIP,
- FMT_INFLATE
- };
if (objc < 2) {
Tcl_WrongNumArgs(interp, 1, objv, "command arg ?...?");
@@ -1882,8 +1877,10 @@ ZlibCmd(
}
return Tcl_ZlibInflate(interp, TCL_ZLIB_FORMAT_ZLIB, objv[2],
buffersize, NULL);
- case CMD_GUNZIP: /* gunzip gzippeddata ?bufferSize?
+ case CMD_GUNZIP: { /* gunzip gzippeddata ?bufferSize?
* -> decompressedData */
+ Tcl_Obj *headerVarObj;
+
if (objc < 3 || objc > 5 || ((objc & 1) == 0)) {
Tcl_WrongNumArgs(interp, 2, objv, "data ?-headerVar varName?");
return TCL_ERROR;
@@ -1929,268 +1926,344 @@ ZlibCmd(
return TCL_ERROR;
}
return TCL_OK;
- case CMD_STREAM: { /* stream deflate/inflate/...gunzip \
+ }
+ case CMD_STREAM: /* stream deflate/inflate/...gunzip \
* ?options...?
* -> handleCmd */
- typedef struct {
- const char *name;
- Tcl_Obj **valueVar;
- } OptDescriptor;
- Tcl_Obj *compDictObj = NULL;
- Tcl_Obj *gzipHeaderObj = NULL;
- Tcl_Obj *levelObj = NULL;
- OptDescriptor compressionOpts[] = {
- { "-dictionary", &compDictObj },
- { "-level", &levelObj },
- { NULL, NULL }
- };
- OptDescriptor gzipOpts[] = {
- { "-dictionary", &compDictObj },
- { "-header", &gzipHeaderObj },
- { "-level", &levelObj },
- { NULL, NULL }
- };
- OptDescriptor expansionOpts[] = {
- { "-dictionary", &compDictObj },
- { NULL, NULL }
- };
- OptDescriptor *desc;
-
- if (objc < 3 || !(objc & 1)) {
- Tcl_WrongNumArgs(interp, 2, objv, "mode ?-option value...?");
- return TCL_ERROR;
- }
- if (Tcl_GetIndexFromObj(interp, objv[2], stream_formats, "mode", 0,
- &format) != TCL_OK) {
- return TCL_ERROR;
- }
- switch ((enum zlibFormats) format) {
- case FMT_DEFLATE:
- desc = compressionOpts;
- mode = TCL_ZLIB_STREAM_DEFLATE;
- format = TCL_ZLIB_FORMAT_RAW;
- break;
- case FMT_INFLATE:
- desc = expansionOpts;
- mode = TCL_ZLIB_STREAM_INFLATE;
- format = TCL_ZLIB_FORMAT_RAW;
- break;
- case FMT_COMPRESS:
- desc = compressionOpts;
- mode = TCL_ZLIB_STREAM_DEFLATE;
- format = TCL_ZLIB_FORMAT_ZLIB;
- break;
- case FMT_DECOMPRESS:
- desc = expansionOpts;
- mode = TCL_ZLIB_STREAM_INFLATE;
- format = TCL_ZLIB_FORMAT_ZLIB;
- break;
- case FMT_GZIP:
- desc = gzipOpts;
- mode = TCL_ZLIB_STREAM_DEFLATE;
- format = TCL_ZLIB_FORMAT_GZIP;
- break;
- case FMT_GUNZIP:
- desc = expansionOpts;
- mode = TCL_ZLIB_STREAM_INFLATE;
- format = TCL_ZLIB_FORMAT_GZIP;
- break;
- }
+ return ZlibStreamSubcmd(interp, objc, objv);
+ case CMD_PUSH: /* push mode channel options...
+ * -> channel */
+ return ZlibPushSubcmd(interp, objc, objv);
+ };
- for (i=3 ; i<objc ; i+=2) {
- if (Tcl_GetIndexFromObjStruct(interp, objv[i], desc,
- sizeof(OptDescriptor), "option", 0, &option) != TCL_OK) {
- return TCL_ERROR;
- }
- *desc[option].valueVar = objv[i+1];
+ return TCL_ERROR;
- /*
- * Drop the cache on the option name; table address not constant.
- */
+ badLevel:
+ Tcl_AppendResult(interp, "level must be 0 to 9", NULL);
+ Tcl_SetErrorCode(interp, "TCL", "VALUE", "COMPRESSIONLEVEL", NULL);
+ if (extraInfoStr) {
+ Tcl_AddErrorInfo(interp, extraInfoStr);
+ }
+ return TCL_ERROR;
+ badBuffer:
+ Tcl_AppendResult(interp, "buffer size must be 32 to 65536", NULL);
+ Tcl_SetErrorCode(interp, "TCL", "VALUE", "BUFFERSIZE", NULL);
+ return TCL_ERROR;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * ZlibStreamSubcmd --
+ *
+ * Implementation of the [zlib stream] subcommand.
+ *
+ *----------------------------------------------------------------------
+ */
- TclFreeIntRep(objv[i]);
- }
+static int
+ZlibStreamSubcmd(
+ Tcl_Interp *interp,
+ int objc,
+ Tcl_Obj *const objv[])
+{
+ static const char *const stream_formats[] = {
+ "compress", "decompress", "deflate", "gunzip", "gzip", "inflate",
+ NULL
+ };
+ enum zlibFormats {
+ FMT_COMPRESS, FMT_DECOMPRESS, FMT_DEFLATE, FMT_GUNZIP, FMT_GZIP,
+ FMT_INFLATE
+ };
+ int i, format, mode, option, level;
+ typedef struct {
+ const char *name;
+ Tcl_Obj **valueVar;
+ } OptDescriptor;
+ Tcl_Obj *compDictObj = NULL;
+ Tcl_Obj *gzipHeaderObj = NULL;
+ Tcl_Obj *levelObj = NULL;
+ const OptDescriptor compressionOpts[] = {
+ { "-dictionary", &compDictObj },
+ { "-level", &levelObj },
+ { NULL, NULL }
+ };
+ const OptDescriptor gzipOpts[] = {
+ { "-dictionary", &compDictObj },
+ { "-header", &gzipHeaderObj },
+ { "-level", &levelObj },
+ { NULL, NULL }
+ };
+ const OptDescriptor expansionOpts[] = {
+ { "-dictionary", &compDictObj },
+ { NULL, NULL }
+ };
+ const OptDescriptor *desc;
+ Tcl_ZlibStream zh;
- level = Z_DEFAULT_COMPRESSION;
- if (levelObj != NULL) {
- if (Tcl_GetIntFromObj(interp, levelObj, &level) != TCL_OK) {
- return TCL_ERROR;
- }
- if (level < 0 || level > 9) {
- goto badLevel;
- }
- }
+ if (objc < 3 || !(objc & 1)) {
+ Tcl_WrongNumArgs(interp, 2, objv, "mode ?-option value...?");
+ return TCL_ERROR;
+ }
+ if (Tcl_GetIndexFromObj(interp, objv[2], stream_formats, "mode", 0,
+ &format) != TCL_OK) {
+ return TCL_ERROR;
+ }
- if (Tcl_ZlibStreamInit(interp, mode, format, level, gzipHeaderObj,
- &zh) != TCL_OK) {
- return TCL_ERROR;
- }
- if (compDictObj != NULL) {
- ZlibStreamHandle *zshPtr = (ZlibStreamHandle *) zh;
+ /*
+ * The format determines the compression mode and the options that may be
+ * specified.
+ */
- zshPtr->compDictObj = compDictObj;
- Tcl_IncrRefCount(compDictObj);
- }
- Tcl_SetObjResult(interp, Tcl_ZlibStreamGetCommandName(zh));
- return TCL_OK;
+ switch ((enum zlibFormats) format) {
+ case FMT_DEFLATE:
+ desc = compressionOpts;
+ mode = TCL_ZLIB_STREAM_DEFLATE;
+ format = TCL_ZLIB_FORMAT_RAW;
+ break;
+ case FMT_INFLATE:
+ desc = expansionOpts;
+ mode = TCL_ZLIB_STREAM_INFLATE;
+ format = TCL_ZLIB_FORMAT_RAW;
+ break;
+ case FMT_COMPRESS:
+ desc = compressionOpts;
+ mode = TCL_ZLIB_STREAM_DEFLATE;
+ format = TCL_ZLIB_FORMAT_ZLIB;
+ break;
+ case FMT_DECOMPRESS:
+ desc = expansionOpts;
+ mode = TCL_ZLIB_STREAM_INFLATE;
+ format = TCL_ZLIB_FORMAT_ZLIB;
+ break;
+ case FMT_GZIP:
+ desc = gzipOpts;
+ mode = TCL_ZLIB_STREAM_DEFLATE;
+ format = TCL_ZLIB_FORMAT_GZIP;
+ break;
+ case FMT_GUNZIP:
+ desc = expansionOpts;
+ mode = TCL_ZLIB_STREAM_INFLATE;
+ format = TCL_ZLIB_FORMAT_GZIP;
+ break;
+ default:
+ Tcl_AppendResult(interp, "IMPOSSIBLE", NULL);
+ return TCL_ERROR;
}
- case CMD_PUSH: { /* push mode channel options...
- * -> channel */
- Tcl_Channel chan;
- int chanMode;
- static const char *const pushOptions[] = {
- "-header", "-level", "-limit",
- NULL
- };
- enum pushOptions {poHeader, poLevel, poLimit};
- Tcl_Obj *headerObj = NULL;
- int limit = 1, dummy;
-
- if (objc < 4) {
- Tcl_WrongNumArgs(interp, 2, objv, "mode channel ?options...?");
- return TCL_ERROR;
- }
- if (Tcl_GetIndexFromObj(interp, objv[2], stream_formats, "mode", 0,
- &format) != TCL_OK) {
- return TCL_ERROR;
- }
- switch ((enum zlibFormats) format) {
- case FMT_DEFLATE:
- mode = TCL_ZLIB_STREAM_DEFLATE;
- format = TCL_ZLIB_FORMAT_RAW;
- break;
- case FMT_INFLATE:
- mode = TCL_ZLIB_STREAM_INFLATE;
- format = TCL_ZLIB_FORMAT_RAW;
- break;
- case FMT_COMPRESS:
- mode = TCL_ZLIB_STREAM_DEFLATE;
- format = TCL_ZLIB_FORMAT_ZLIB;
- break;
- case FMT_DECOMPRESS:
- mode = TCL_ZLIB_STREAM_INFLATE;
- format = TCL_ZLIB_FORMAT_ZLIB;
- break;
- case FMT_GZIP:
- mode = TCL_ZLIB_STREAM_DEFLATE;
- format = TCL_ZLIB_FORMAT_GZIP;
- break;
- case FMT_GUNZIP:
- mode = TCL_ZLIB_STREAM_INFLATE;
- format = TCL_ZLIB_FORMAT_GZIP;
- break;
- default:
- Tcl_AppendResult(interp, "IMPOSSIBLE", NULL);
- return TCL_ERROR;
- }
+ /*
+ * Parse the options.
+ */
- if (TclGetChannelFromObj(interp, objv[3], &chan, &chanMode,
- 0) != TCL_OK) {
+ for (i=3 ; i<objc ; i+=2) {
+ if (Tcl_GetIndexFromObjStruct(interp, objv[i], desc,
+ sizeof(OptDescriptor), "option", 0, &option) != TCL_OK) {
return TCL_ERROR;
}
+ *desc[option].valueVar = objv[i+1];
/*
- * Sanity checks.
+ * Drop the cache on the option name; table address not constant.
*/
- if (mode == TCL_ZLIB_STREAM_DEFLATE && !(chanMode & TCL_WRITABLE)) {
- Tcl_AppendResult(interp,
- "compression may only be applied to writable channels",
- NULL);
- Tcl_SetErrorCode(interp, "TCL", "ZIP", "UNWRITABLE", NULL);
- return TCL_ERROR;
- }
- if (mode == TCL_ZLIB_STREAM_INFLATE && !(chanMode & TCL_READABLE)) {
- Tcl_AppendResult(interp,
- "decompression may only be applied to readable channels",
- NULL);
- Tcl_SetErrorCode(interp, "TCL", "ZIP", "UNREADABLE", NULL);
- return TCL_ERROR;
- }
+ TclFreeIntRep(objv[i]);
+ }
- /*
- * Parse options.
- */
+ /*
+ * If a compression level was given, parse it (integral: 0..9). Otherwise
+ * use the default.
+ */
+ if (levelObj == NULL) {
level = Z_DEFAULT_COMPRESSION;
- for (i=4 ; i<objc ; i++) {
- if (Tcl_GetIndexFromObj(interp, objv[i], pushOptions, "option", 0,
- &option) != TCL_OK) {
+ } else if (Tcl_GetIntFromObj(interp, levelObj, &level) != TCL_OK) {
+ return TCL_ERROR;
+ } else if (level < 0 || level > 9) {
+ Tcl_AppendResult(interp, "level must be 0 to 9", NULL);
+ Tcl_SetErrorCode(interp, "TCL", "VALUE", "COMPRESSIONLEVEL", NULL);
+ Tcl_AddErrorInfo(interp, "\n (in -level option)");
+ return TCL_ERROR;
+ }
+
+ /*
+ * Construct the stream now we know its configuration.
+ */
+
+ if (Tcl_ZlibStreamInit(interp, mode, format, level, gzipHeaderObj,
+ &zh) != TCL_OK) {
+ return TCL_ERROR;
+ }
+ if (compDictObj != NULL) {
+ ZlibStreamHandle *zshPtr = (ZlibStreamHandle *) zh;
+
+ zshPtr->compDictObj = compDictObj;
+ Tcl_IncrRefCount(compDictObj);
+ }
+ Tcl_SetObjResult(interp, Tcl_ZlibStreamGetCommandName(zh));
+ return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * ZlibPushSubcmd --
+ *
+ * Implementation of the [zlib push] subcommand.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+ZlibPushSubcmd(
+ Tcl_Interp *interp,
+ int objc,
+ Tcl_Obj *const objv[])
+{
+ static const char *const stream_formats[] = {
+ "compress", "decompress", "deflate", "gunzip", "gzip", "inflate",
+ NULL
+ };
+ enum zlibFormats {
+ FMT_COMPRESS, FMT_DECOMPRESS, FMT_DEFLATE, FMT_GUNZIP, FMT_GZIP,
+ FMT_INFLATE
+ };
+ Tcl_Channel chan;
+ int chanMode, format, mode, level, i, option;
+ static const char *const pushOptions[] = {
+ "-header", "-level", "-limit", NULL
+ };
+ enum pushOptions {poHeader, poLevel, poLimit};
+ Tcl_Obj *headerObj = NULL;
+ int limit = 1, dummy;
+
+ if (objc < 4) {
+ Tcl_WrongNumArgs(interp, 2, objv, "mode channel ?options...?");
+ return TCL_ERROR;
+ }
+
+ if (Tcl_GetIndexFromObj(interp, objv[2], stream_formats, "mode", 0,
+ &format) != TCL_OK) {
+ return TCL_ERROR;
+ }
+ switch ((enum zlibFormats) format) {
+ case FMT_DEFLATE:
+ mode = TCL_ZLIB_STREAM_DEFLATE;
+ format = TCL_ZLIB_FORMAT_RAW;
+ break;
+ case FMT_INFLATE:
+ mode = TCL_ZLIB_STREAM_INFLATE;
+ format = TCL_ZLIB_FORMAT_RAW;
+ break;
+ case FMT_COMPRESS:
+ mode = TCL_ZLIB_STREAM_DEFLATE;
+ format = TCL_ZLIB_FORMAT_ZLIB;
+ break;
+ case FMT_DECOMPRESS:
+ mode = TCL_ZLIB_STREAM_INFLATE;
+ format = TCL_ZLIB_FORMAT_ZLIB;
+ break;
+ case FMT_GZIP:
+ mode = TCL_ZLIB_STREAM_DEFLATE;
+ format = TCL_ZLIB_FORMAT_GZIP;
+ break;
+ case FMT_GUNZIP:
+ mode = TCL_ZLIB_STREAM_INFLATE;
+ format = TCL_ZLIB_FORMAT_GZIP;
+ break;
+ default:
+ Tcl_AppendResult(interp, "IMPOSSIBLE", NULL);
+ return TCL_ERROR;
+ }
+
+ if (TclGetChannelFromObj(interp, objv[3], &chan, &chanMode, 0) != TCL_OK){
+ return TCL_ERROR;
+ }
+
+ /*
+ * Sanity checks.
+ */
+
+ if (mode == TCL_ZLIB_STREAM_DEFLATE && !(chanMode & TCL_WRITABLE)) {
+ Tcl_AppendResult(interp,
+ "compression may only be applied to writable channels", NULL);
+ Tcl_SetErrorCode(interp, "TCL", "ZIP", "UNWRITABLE", NULL);
+ return TCL_ERROR;
+ }
+ if (mode == TCL_ZLIB_STREAM_INFLATE && !(chanMode & TCL_READABLE)) {
+ Tcl_AppendResult(interp,
+ "decompression may only be applied to readable channels",
+ NULL);
+ Tcl_SetErrorCode(interp, "TCL", "ZIP", "UNREADABLE", NULL);
+ return TCL_ERROR;
+ }
+
+ /*
+ * Parse options.
+ */
+
+ level = Z_DEFAULT_COMPRESSION;
+ for (i=4 ; i<objc ; i++) {
+ if (Tcl_GetIndexFromObj(interp, objv[i], pushOptions, "option", 0,
+ &option) != TCL_OK) {
+ return TCL_ERROR;
+ }
+ switch ((enum pushOptions) option) {
+ case poHeader:
+ if (++i > objc-1) {
+ Tcl_AppendResult(interp, "value missing for -header option",
+ NULL);
+ Tcl_SetErrorCode(interp, "TCL", "ZIP", "NOVAL", NULL);
return TCL_ERROR;
}
- switch ((enum pushOptions) option) {
- case poHeader:
- if (++i > objc-1) {
- Tcl_AppendResult(interp,
- "value missing for -header option", NULL);
- Tcl_SetErrorCode(interp, "TCL", "ZIP", "NOVAL", NULL);
- return TCL_ERROR;
- }
- headerObj = objv[i];
- if (Tcl_DictObjSize(interp, headerObj, &dummy) != TCL_OK) {
- Tcl_AddErrorInfo(interp, "\n (in -header option)");
- return TCL_ERROR;
- }
- break;
- case poLevel:
- if (++i > objc-1) {
- Tcl_AppendResult(interp,
- "value missing for -level option", NULL);
- Tcl_SetErrorCode(interp, "TCL", "ZIP", "NOVAL", NULL);
- return TCL_ERROR;
- }
- if (Tcl_GetIntFromObj(interp, objv[i],
- (int *) &level) != TCL_OK) {
- Tcl_AddErrorInfo(interp, "\n (in -level option)");
- return TCL_ERROR;
- }
- if (level < 0 || level > 9) {
- extraInfoStr = "\n (in -level option)";
- goto badLevel;
- }
- break;
- case poLimit:
- if (++i > objc-1) {
- Tcl_AppendResult(interp,
- "value missing for -limit option", NULL);
- Tcl_SetErrorCode(interp, "TCL", "ZIP", "NOVAL", NULL);
- return TCL_ERROR;
- }
- if (Tcl_GetIntFromObj(interp, objv[i],
- (int *) &limit) != TCL_OK) {
- Tcl_AddErrorInfo(interp, "\n (in -limit option)");
- return TCL_ERROR;
- }
- if (limit < 1) {
- limit = 1;
- }
- break;
+ headerObj = objv[i];
+ if (Tcl_DictObjSize(interp, headerObj, &dummy) != TCL_OK) {
+ Tcl_AddErrorInfo(interp, "\n (in -header option)");
+ return TCL_ERROR;
}
+ break;
+ case poLevel:
+ if (++i > objc-1) {
+ Tcl_AppendResult(interp,
+ "value missing for -level option", NULL);
+ Tcl_SetErrorCode(interp, "TCL", "ZIP", "NOVAL", NULL);
+ return TCL_ERROR;
+ }
+ if (Tcl_GetIntFromObj(interp, objv[i], (int*) &level) != TCL_OK) {
+ Tcl_AddErrorInfo(interp, "\n (in -level option)");
+ return TCL_ERROR;
+ }
+ if (level < 0 || level > 9) {
+ Tcl_AppendResult(interp, "level must be 0 to 9", NULL);
+ Tcl_SetErrorCode(interp, "TCL", "VALUE", "COMPRESSIONLEVEL",
+ NULL);
+ Tcl_AddErrorInfo(interp, "\n (in -level option)");
+ return TCL_ERROR;
+ }
+ break;
+ case poLimit:
+ if (++i > objc-1) {
+ Tcl_AppendResult(interp, "value missing for -limit option",
+ NULL);
+ Tcl_SetErrorCode(interp, "TCL", "ZIP", "NOVAL", NULL);
+ return TCL_ERROR;
+ }
+ if (Tcl_GetIntFromObj(interp, objv[i], (int*) &limit) != TCL_OK) {
+ Tcl_AddErrorInfo(interp, "\n (in -limit option)");
+ return TCL_ERROR;
+ }
+ if (limit < 1) {
+ limit = 1;
+ }
+ break;
}
-
- if (ZlibStackChannelTransform(interp, mode, format, level, chan,
- headerObj, NULL) == NULL) {
- return TCL_ERROR;
- }
- Tcl_SetObjResult(interp, objv[3]);
- return TCL_OK;
}
- };
-
- return TCL_ERROR;
- badLevel:
- Tcl_AppendResult(interp, "level must be 0 to 9", NULL);
- Tcl_SetErrorCode(interp, "TCL", "VALUE", "COMPRESSIONLEVEL", NULL);
- if (extraInfoStr) {
- Tcl_AddErrorInfo(interp, extraInfoStr);
+ if (ZlibStackChannelTransform(interp, mode, format, level, chan,
+ headerObj, NULL) == NULL) {
+ return TCL_ERROR;
}
- return TCL_ERROR;
- badBuffer:
- Tcl_AppendResult(interp, "buffer size must be 32 to 65536", NULL);
- Tcl_SetErrorCode(interp, "TCL", "VALUE", "BUFFERSIZE", NULL);
- return TCL_ERROR;
+ Tcl_SetObjResult(interp, objv[3]);
+ return TCL_OK;
}
/*