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dashley |
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/* $Header: /cvsroot/esrg/sfesrg/esrgpcpj/shared/tcl_base/tclpkg.c,v 1.1.1.1 2001/06/13 04:45:00 dtashley Exp $ */
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/*
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* tclPkg.c --
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*
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* This file implements package and version control for Tcl via
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* the "package" command and a few C APIs.
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*
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* Copyright (c) 1996 Sun Microsystems, Inc.
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*
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* See the file "license.terms" for information on usage and redistribution
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* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
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*
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* RCS: @(#) $Id: tclpkg.c,v 1.1.1.1 2001/06/13 04:45:00 dtashley Exp $
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*/
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#include "tclInt.h"
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/*
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* Each invocation of the "package ifneeded" command creates a structure
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* of the following type, which is used to load the package into the
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* interpreter if it is requested with a "package require" command.
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*/
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typedef struct PkgAvail {
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char *version; /* Version string; malloc'ed. */
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char *script; /* Script to invoke to provide this version
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* of the package. Malloc'ed and protected
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* by Tcl_Preserve and Tcl_Release. */
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struct PkgAvail *nextPtr; /* Next in list of available versions of
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* the same package. */
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} PkgAvail;
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/*
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* For each package that is known in any way to an interpreter, there
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* is one record of the following type. These records are stored in
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* the "packageTable" hash table in the interpreter, keyed by
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* package name such as "Tk" (no version number).
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*/
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typedef struct Package {
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char *version; /* Version that has been supplied in this
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* interpreter via "package provide"
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* (malloc'ed). NULL means the package doesn't
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* exist in this interpreter yet. */
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PkgAvail *availPtr; /* First in list of all available versions
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* of this package. */
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ClientData clientData; /* Client data. */
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} Package;
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/*
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* Prototypes for procedures defined in this file:
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*/
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static int CheckVersion _ANSI_ARGS_((Tcl_Interp *interp,
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char *string));
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static int ComparePkgVersions _ANSI_ARGS_((char *v1, char *v2,
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int *satPtr));
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static Package * FindPackage _ANSI_ARGS_((Tcl_Interp *interp,
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char *name));
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/*
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*----------------------------------------------------------------------
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*
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* Tcl_PkgProvide / Tcl_PkgProvideEx --
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*
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* This procedure is invoked to declare that a particular version
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* of a particular package is now present in an interpreter. There
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* must not be any other version of this package already
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* provided in the interpreter.
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*
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* Results:
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* Normally returns TCL_OK; if there is already another version
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* of the package loaded then TCL_ERROR is returned and an error
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* message is left in the interp's result.
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*
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* Side effects:
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* The interpreter remembers that this package is available,
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* so that no other version of the package may be provided for
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* the interpreter.
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*
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*----------------------------------------------------------------------
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*/
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int
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Tcl_PkgProvide(interp, name, version)
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Tcl_Interp *interp; /* Interpreter in which package is now
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* available. */
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char *name; /* Name of package. */
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char *version; /* Version string for package. */
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{
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return Tcl_PkgProvideEx(interp, name, version, (ClientData) NULL);
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}
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int
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Tcl_PkgProvideEx(interp, name, version, clientData)
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Tcl_Interp *interp; /* Interpreter in which package is now
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* available. */
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char *name; /* Name of package. */
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char *version; /* Version string for package. */
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ClientData clientData; /* clientdata for this package (normally
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* used for C callback function table) */
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{
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Package *pkgPtr;
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pkgPtr = FindPackage(interp, name);
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if (pkgPtr->version == NULL) {
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pkgPtr->version = ckalloc((unsigned) (strlen(version) + 1));
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strcpy(pkgPtr->version, version);
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pkgPtr->clientData = clientData;
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return TCL_OK;
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}
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if (ComparePkgVersions(pkgPtr->version, version, (int *) NULL) == 0) {
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if (clientData != NULL) {
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pkgPtr->clientData = clientData;
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}
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return TCL_OK;
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}
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Tcl_AppendResult(interp, "conflicting versions provided for package \"",
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name, "\": ", pkgPtr->version, ", then ", version, (char *) NULL);
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return TCL_ERROR;
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}
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/*
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*----------------------------------------------------------------------
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*
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* Tcl_PkgRequire / Tcl_PkgRequireEx --
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*
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* This procedure is called by code that depends on a particular
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* version of a particular package. If the package is not already
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* provided in the interpreter, this procedure invokes a Tcl script
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* to provide it. If the package is already provided, this
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* procedure makes sure that the caller's needs don't conflict with
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* the version that is present.
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*
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* Results:
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* If successful, returns the version string for the currently
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* provided version of the package, which may be different from
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* the "version" argument. If the caller's requirements
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* cannot be met (e.g. the version requested conflicts with
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* a currently provided version, or the required version cannot
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* be found, or the script to provide the required version
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* generates an error), NULL is returned and an error
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* message is left in the interp's result.
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*
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* Side effects:
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* The script from some previous "package ifneeded" command may
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* be invoked to provide the package.
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*
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*----------------------------------------------------------------------
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*/
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char *
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Tcl_PkgRequire(interp, name, version, exact)
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Tcl_Interp *interp; /* Interpreter in which package is now
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* available. */
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char *name; /* Name of desired package. */
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char *version; /* Version string for desired version;
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* NULL means use the latest version
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* available. */
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int exact; /* Non-zero means that only the particular
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* version given is acceptable. Zero means
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* use the latest compatible version. */
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{
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return Tcl_PkgRequireEx(interp, name, version, exact, (ClientData *) NULL);
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}
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char *
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Tcl_PkgRequireEx(interp, name, version, exact, clientDataPtr)
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Tcl_Interp *interp; /* Interpreter in which package is now
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* available. */
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char *name; /* Name of desired package. */
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char *version; /* Version string for desired version;
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* NULL means use the latest version
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* available. */
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int exact; /* Non-zero means that only the particular
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* version given is acceptable. Zero means
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* use the latest compatible version. */
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ClientData *clientDataPtr; /* Used to return the client data for this
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* package. If it is NULL then the client
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* data is not returned. This is unchanged
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* if this call fails for any reason. */
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{
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Package *pkgPtr;
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PkgAvail *availPtr, *bestPtr;
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char *script;
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int code, satisfies, result, pass;
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Tcl_DString command;
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/*
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* If an attempt is being made to load this into a standalong executable
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* on a platform where backlinking is not supported then this must be
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* a shared version of Tcl (Otherwise the load would have failed).
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* Detect this situation by checking that this library has been correctly
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* initialised. If it has not been then return immediately as nothing will
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* work.
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*/
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if (!tclEmptyStringRep) {
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Tcl_AppendResult(interp, "Cannot load package \"", name,
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"\" in standalone executable: This package is not ",
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"compiled with stub support", NULL);
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return NULL;
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}
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/*
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* It can take up to three passes to find the package: one pass to
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* run the "package unknown" script, one to run the "package ifneeded"
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* script for a specific version, and a final pass to lookup the
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* package loaded by the "package ifneeded" script.
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*/
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for (pass = 1; ; pass++) {
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pkgPtr = FindPackage(interp, name);
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if (pkgPtr->version != NULL) {
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break;
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}
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218 |
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/*
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* The package isn't yet present. Search the list of available
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* versions and invoke the script for the best available version.
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*/
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223 |
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bestPtr = NULL;
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for (availPtr = pkgPtr->availPtr; availPtr != NULL;
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availPtr = availPtr->nextPtr) {
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if ((bestPtr != NULL) && (ComparePkgVersions(availPtr->version,
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bestPtr->version, (int *) NULL) <= 0)) {
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continue;
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}
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if (version != NULL) {
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result = ComparePkgVersions(availPtr->version, version,
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&satisfies);
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if ((result != 0) && exact) {
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continue;
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}
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237 |
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if (!satisfies) {
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continue;
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239 |
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}
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240 |
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}
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241 |
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bestPtr = availPtr;
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}
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243 |
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if (bestPtr != NULL) {
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/*
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245 |
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* We found an ifneeded script for the package. Be careful while
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246 |
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* executing it: this could cause reentrancy, so (a) protect the
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247 |
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* script itself from deletion and (b) don't assume that bestPtr
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248 |
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* will still exist when the script completes.
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*/
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250 |
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script = bestPtr->script;
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Tcl_Preserve((ClientData) script);
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code = Tcl_GlobalEval(interp, script);
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Tcl_Release((ClientData) script);
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if (code != TCL_OK) {
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256 |
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if (code == TCL_ERROR) {
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257 |
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Tcl_AddErrorInfo(interp,
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258 |
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"\n (\"package ifneeded\" script)");
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259 |
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}
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260 |
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return NULL;
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261 |
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}
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262 |
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Tcl_ResetResult(interp);
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263 |
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pkgPtr = FindPackage(interp, name);
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break;
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}
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266 |
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267 |
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/*
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268 |
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* Package not in the database. If there is a "package unknown"
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269 |
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* command, invoke it (but only on the first pass; after that,
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* we should not get here in the first place).
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*/
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272 |
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273 |
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if (pass > 1) {
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break;
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275 |
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}
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276 |
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script = ((Interp *) interp)->packageUnknown;
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277 |
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if (script != NULL) {
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278 |
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Tcl_DStringInit(&command);
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279 |
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Tcl_DStringAppend(&command, script, -1);
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280 |
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Tcl_DStringAppendElement(&command, name);
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281 |
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Tcl_DStringAppend(&command, " ", 1);
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282 |
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Tcl_DStringAppend(&command, (version != NULL) ? version : "{}",
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283 |
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-1);
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284 |
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if (exact) {
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285 |
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Tcl_DStringAppend(&command, " -exact", 7);
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286 |
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}
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287 |
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code = Tcl_GlobalEval(interp, Tcl_DStringValue(&command));
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288 |
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Tcl_DStringFree(&command);
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289 |
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if (code != TCL_OK) {
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290 |
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if (code == TCL_ERROR) {
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291 |
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Tcl_AddErrorInfo(interp,
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292 |
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"\n (\"package unknown\" script)");
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293 |
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}
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294 |
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return NULL;
|
295 |
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}
|
296 |
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Tcl_ResetResult(interp);
|
297 |
|
|
}
|
298 |
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}
|
299 |
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300 |
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if (pkgPtr->version == NULL) {
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301 |
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Tcl_AppendResult(interp, "can't find package ", name,
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302 |
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(char *) NULL);
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303 |
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if (version != NULL) {
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304 |
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Tcl_AppendResult(interp, " ", version, (char *) NULL);
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305 |
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}
|
306 |
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return NULL;
|
307 |
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|
}
|
308 |
|
|
|
309 |
|
|
/*
|
310 |
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|
* At this point we know that the package is present. Make sure that the
|
311 |
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* provided version meets the current requirement.
|
312 |
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|
*/
|
313 |
|
|
|
314 |
|
|
if (version == NULL) {
|
315 |
|
|
if (clientDataPtr) {
|
316 |
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*clientDataPtr = pkgPtr->clientData;
|
317 |
|
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}
|
318 |
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return pkgPtr->version;
|
319 |
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|
}
|
320 |
|
|
result = ComparePkgVersions(pkgPtr->version, version, &satisfies);
|
321 |
|
|
if ((satisfies && !exact) || (result == 0)) {
|
322 |
|
|
if (clientDataPtr) {
|
323 |
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*clientDataPtr = pkgPtr->clientData;
|
324 |
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}
|
325 |
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return pkgPtr->version;
|
326 |
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|
}
|
327 |
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|
Tcl_AppendResult(interp, "version conflict for package \"",
|
328 |
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|
name, "\": have ", pkgPtr->version, ", need ", version,
|
329 |
|
|
(char *) NULL);
|
330 |
|
|
return NULL;
|
331 |
|
|
}
|
332 |
|
|
|
333 |
|
|
/*
|
334 |
|
|
*----------------------------------------------------------------------
|
335 |
|
|
*
|
336 |
|
|
* Tcl_PkgPresent / Tcl_PkgPresentEx --
|
337 |
|
|
*
|
338 |
|
|
* Checks to see whether the specified package is present. If it
|
339 |
|
|
* is not then no additional action is taken.
|
340 |
|
|
*
|
341 |
|
|
* Results:
|
342 |
|
|
* If successful, returns the version string for the currently
|
343 |
|
|
* provided version of the package, which may be different from
|
344 |
|
|
* the "version" argument. If the caller's requirements
|
345 |
|
|
* cannot be met (e.g. the version requested conflicts with
|
346 |
|
|
* a currently provided version), NULL is returned and an error
|
347 |
|
|
* message is left in interp->result.
|
348 |
|
|
*
|
349 |
|
|
* Side effects:
|
350 |
|
|
* None.
|
351 |
|
|
*
|
352 |
|
|
*----------------------------------------------------------------------
|
353 |
|
|
*/
|
354 |
|
|
|
355 |
|
|
char *
|
356 |
|
|
Tcl_PkgPresent(interp, name, version, exact)
|
357 |
|
|
Tcl_Interp *interp; /* Interpreter in which package is now
|
358 |
|
|
* available. */
|
359 |
|
|
char *name; /* Name of desired package. */
|
360 |
|
|
char *version; /* Version string for desired version;
|
361 |
|
|
* NULL means use the latest version
|
362 |
|
|
* available. */
|
363 |
|
|
int exact; /* Non-zero means that only the particular
|
364 |
|
|
* version given is acceptable. Zero means
|
365 |
|
|
* use the latest compatible version. */
|
366 |
|
|
{
|
367 |
|
|
return Tcl_PkgPresentEx(interp, name, version, exact, (ClientData *) NULL);
|
368 |
|
|
}
|
369 |
|
|
|
370 |
|
|
char *
|
371 |
|
|
Tcl_PkgPresentEx(interp, name, version, exact, clientDataPtr)
|
372 |
|
|
Tcl_Interp *interp; /* Interpreter in which package is now
|
373 |
|
|
* available. */
|
374 |
|
|
char *name; /* Name of desired package. */
|
375 |
|
|
char *version; /* Version string for desired version;
|
376 |
|
|
* NULL means use the latest version
|
377 |
|
|
* available. */
|
378 |
|
|
int exact; /* Non-zero means that only the particular
|
379 |
|
|
* version given is acceptable. Zero means
|
380 |
|
|
* use the latest compatible version. */
|
381 |
|
|
ClientData *clientDataPtr; /* Used to return the client data for this
|
382 |
|
|
* package. If it is NULL then the client
|
383 |
|
|
* data is not returned. This is unchanged
|
384 |
|
|
* if this call fails for any reason. */
|
385 |
|
|
{
|
386 |
|
|
Interp *iPtr = (Interp *) interp;
|
387 |
|
|
Tcl_HashEntry *hPtr;
|
388 |
|
|
Package *pkgPtr;
|
389 |
|
|
int satisfies, result;
|
390 |
|
|
|
391 |
|
|
/*
|
392 |
|
|
* If an attempt is being made to load this into a standalone executable
|
393 |
|
|
* on a platform where backlinking is not supported then this must be
|
394 |
|
|
* a shared version of Tcl (Otherwise the load would have failed).
|
395 |
|
|
* Detect this situation by checking that this library has been correctly
|
396 |
|
|
* initialised. If it has not been then return immediately as nothing will
|
397 |
|
|
* work.
|
398 |
|
|
*/
|
399 |
|
|
|
400 |
|
|
if (!tclEmptyStringRep) {
|
401 |
|
|
Tcl_AppendResult(interp, "Cannot load package \"", name,
|
402 |
|
|
"\" in standalone executable: This package is not ",
|
403 |
|
|
"compiled with stub support", NULL);
|
404 |
|
|
return NULL;
|
405 |
|
|
}
|
406 |
|
|
|
407 |
|
|
hPtr = Tcl_FindHashEntry(&iPtr->packageTable, name);
|
408 |
|
|
if (hPtr) {
|
409 |
|
|
pkgPtr = (Package *) Tcl_GetHashValue(hPtr);
|
410 |
|
|
if (pkgPtr->version != NULL) {
|
411 |
|
|
|
412 |
|
|
/*
|
413 |
|
|
* At this point we know that the package is present. Make sure
|
414 |
|
|
* that the provided version meets the current requirement.
|
415 |
|
|
*/
|
416 |
|
|
|
417 |
|
|
if (version == NULL) {
|
418 |
|
|
if (clientDataPtr) {
|
419 |
|
|
*clientDataPtr = pkgPtr->clientData;
|
420 |
|
|
}
|
421 |
|
|
|
422 |
|
|
return pkgPtr->version;
|
423 |
|
|
}
|
424 |
|
|
result = ComparePkgVersions(pkgPtr->version, version, &satisfies);
|
425 |
|
|
if ((satisfies && !exact) || (result == 0)) {
|
426 |
|
|
if (clientDataPtr) {
|
427 |
|
|
*clientDataPtr = pkgPtr->clientData;
|
428 |
|
|
}
|
429 |
|
|
|
430 |
|
|
return pkgPtr->version;
|
431 |
|
|
}
|
432 |
|
|
Tcl_AppendResult(interp, "version conflict for package \"",
|
433 |
|
|
name, "\": have ", pkgPtr->version,
|
434 |
|
|
", need ", version, (char *) NULL);
|
435 |
|
|
return NULL;
|
436 |
|
|
}
|
437 |
|
|
}
|
438 |
|
|
|
439 |
|
|
if (version != NULL) {
|
440 |
|
|
Tcl_AppendResult(interp, "package ", name, " ", version,
|
441 |
|
|
" is not present", (char *) NULL);
|
442 |
|
|
} else {
|
443 |
|
|
Tcl_AppendResult(interp, "package ", name, " is not present",
|
444 |
|
|
(char *) NULL);
|
445 |
|
|
}
|
446 |
|
|
return NULL;
|
447 |
|
|
}
|
448 |
|
|
|
449 |
|
|
/*
|
450 |
|
|
*----------------------------------------------------------------------
|
451 |
|
|
*
|
452 |
|
|
* Tcl_PackageObjCmd --
|
453 |
|
|
*
|
454 |
|
|
* This procedure is invoked to process the "package" Tcl command.
|
455 |
|
|
* See the user documentation for details on what it does.
|
456 |
|
|
*
|
457 |
|
|
* Results:
|
458 |
|
|
* A standard Tcl result.
|
459 |
|
|
*
|
460 |
|
|
* Side effects:
|
461 |
|
|
* See the user documentation.
|
462 |
|
|
*
|
463 |
|
|
*----------------------------------------------------------------------
|
464 |
|
|
*/
|
465 |
|
|
|
466 |
|
|
/* ARGSUSED */
|
467 |
|
|
int
|
468 |
|
|
Tcl_PackageObjCmd(dummy, interp, objc, objv)
|
469 |
|
|
ClientData dummy; /* Not used. */
|
470 |
|
|
Tcl_Interp *interp; /* Current interpreter. */
|
471 |
|
|
int objc; /* Number of arguments. */
|
472 |
|
|
Tcl_Obj *CONST objv[]; /* Argument objects. */
|
473 |
|
|
{
|
474 |
|
|
static char *pkgOptions[] = {
|
475 |
|
|
"forget", "ifneeded", "names", "present", "provide", "require",
|
476 |
|
|
"unknown", "vcompare", "versions", "vsatisfies", (char *) NULL
|
477 |
|
|
};
|
478 |
|
|
enum pkgOptions {
|
479 |
|
|
PKG_FORGET, PKG_IFNEEDED, PKG_NAMES, PKG_PRESENT,
|
480 |
|
|
PKG_PROVIDE, PKG_REQUIRE, PKG_UNKNOWN, PKG_VCOMPARE,
|
481 |
|
|
PKG_VERSIONS, PKG_VSATISFIES
|
482 |
|
|
};
|
483 |
|
|
Interp *iPtr = (Interp *) interp;
|
484 |
|
|
int optionIndex, exact, i, satisfies;
|
485 |
|
|
PkgAvail *availPtr, *prevPtr;
|
486 |
|
|
Package *pkgPtr;
|
487 |
|
|
Tcl_HashEntry *hPtr;
|
488 |
|
|
Tcl_HashSearch search;
|
489 |
|
|
Tcl_HashTable *tablePtr;
|
490 |
|
|
char *version, *argv2, *argv3, *argv4;
|
491 |
|
|
|
492 |
|
|
if (objc < 2) {
|
493 |
|
|
Tcl_WrongNumArgs(interp, 1, objv, "option ?arg arg ...?");
|
494 |
|
|
return TCL_ERROR;
|
495 |
|
|
}
|
496 |
|
|
|
497 |
|
|
if (Tcl_GetIndexFromObj(interp, objv[1], pkgOptions, "option", 0,
|
498 |
|
|
&optionIndex) != TCL_OK) {
|
499 |
|
|
return TCL_ERROR;
|
500 |
|
|
}
|
501 |
|
|
switch ((enum pkgOptions) optionIndex) {
|
502 |
|
|
case PKG_FORGET: {
|
503 |
|
|
char *keyString;
|
504 |
|
|
for (i = 2; i < objc; i++) {
|
505 |
|
|
keyString = Tcl_GetString(objv[i]);
|
506 |
|
|
hPtr = Tcl_FindHashEntry(&iPtr->packageTable, keyString);
|
507 |
|
|
if (hPtr == NULL) {
|
508 |
|
|
return TCL_OK;
|
509 |
|
|
}
|
510 |
|
|
pkgPtr = (Package *) Tcl_GetHashValue(hPtr);
|
511 |
|
|
Tcl_DeleteHashEntry(hPtr);
|
512 |
|
|
if (pkgPtr->version != NULL) {
|
513 |
|
|
ckfree(pkgPtr->version);
|
514 |
|
|
}
|
515 |
|
|
while (pkgPtr->availPtr != NULL) {
|
516 |
|
|
availPtr = pkgPtr->availPtr;
|
517 |
|
|
pkgPtr->availPtr = availPtr->nextPtr;
|
518 |
|
|
ckfree(availPtr->version);
|
519 |
|
|
Tcl_EventuallyFree((ClientData)availPtr->script, TCL_DYNAMIC);
|
520 |
|
|
ckfree((char *) availPtr);
|
521 |
|
|
}
|
522 |
|
|
ckfree((char *) pkgPtr);
|
523 |
|
|
}
|
524 |
|
|
break;
|
525 |
|
|
}
|
526 |
|
|
case PKG_IFNEEDED: {
|
527 |
|
|
int length;
|
528 |
|
|
if ((objc != 4) && (objc != 5)) {
|
529 |
|
|
Tcl_WrongNumArgs(interp, 2, objv, "package version ?script?");
|
530 |
|
|
return TCL_ERROR;
|
531 |
|
|
}
|
532 |
|
|
argv3 = Tcl_GetString(objv[3]);
|
533 |
|
|
if (CheckVersion(interp, argv3) != TCL_OK) {
|
534 |
|
|
return TCL_ERROR;
|
535 |
|
|
}
|
536 |
|
|
argv2 = Tcl_GetString(objv[2]);
|
537 |
|
|
if (objc == 4) {
|
538 |
|
|
hPtr = Tcl_FindHashEntry(&iPtr->packageTable, argv2);
|
539 |
|
|
if (hPtr == NULL) {
|
540 |
|
|
return TCL_OK;
|
541 |
|
|
}
|
542 |
|
|
pkgPtr = (Package *) Tcl_GetHashValue(hPtr);
|
543 |
|
|
} else {
|
544 |
|
|
pkgPtr = FindPackage(interp, argv2);
|
545 |
|
|
}
|
546 |
|
|
argv3 = Tcl_GetStringFromObj(objv[3], &length);
|
547 |
|
|
for (availPtr = pkgPtr->availPtr, prevPtr = NULL; availPtr != NULL;
|
548 |
|
|
prevPtr = availPtr, availPtr = availPtr->nextPtr) {
|
549 |
|
|
if (ComparePkgVersions(availPtr->version, argv3, (int *) NULL)
|
550 |
|
|
== 0) {
|
551 |
|
|
if (objc == 4) {
|
552 |
|
|
Tcl_SetResult(interp, availPtr->script, TCL_VOLATILE);
|
553 |
|
|
return TCL_OK;
|
554 |
|
|
}
|
555 |
|
|
Tcl_EventuallyFree((ClientData)availPtr->script, TCL_DYNAMIC);
|
556 |
|
|
break;
|
557 |
|
|
}
|
558 |
|
|
}
|
559 |
|
|
if (objc == 4) {
|
560 |
|
|
return TCL_OK;
|
561 |
|
|
}
|
562 |
|
|
if (availPtr == NULL) {
|
563 |
|
|
availPtr = (PkgAvail *) ckalloc(sizeof(PkgAvail));
|
564 |
|
|
availPtr->version = ckalloc((unsigned) (length + 1));
|
565 |
|
|
strcpy(availPtr->version, argv3);
|
566 |
|
|
if (prevPtr == NULL) {
|
567 |
|
|
availPtr->nextPtr = pkgPtr->availPtr;
|
568 |
|
|
pkgPtr->availPtr = availPtr;
|
569 |
|
|
} else {
|
570 |
|
|
availPtr->nextPtr = prevPtr->nextPtr;
|
571 |
|
|
prevPtr->nextPtr = availPtr;
|
572 |
|
|
}
|
573 |
|
|
}
|
574 |
|
|
argv4 = Tcl_GetStringFromObj(objv[4], &length);
|
575 |
|
|
availPtr->script = ckalloc((unsigned) (length + 1));
|
576 |
|
|
strcpy(availPtr->script, argv4);
|
577 |
|
|
break;
|
578 |
|
|
}
|
579 |
|
|
case PKG_NAMES: {
|
580 |
|
|
if (objc != 2) {
|
581 |
|
|
Tcl_WrongNumArgs(interp, 2, objv, NULL);
|
582 |
|
|
return TCL_ERROR;
|
583 |
|
|
}
|
584 |
|
|
tablePtr = &iPtr->packageTable;
|
585 |
|
|
for (hPtr = Tcl_FirstHashEntry(tablePtr, &search); hPtr != NULL;
|
586 |
|
|
hPtr = Tcl_NextHashEntry(&search)) {
|
587 |
|
|
pkgPtr = (Package *) Tcl_GetHashValue(hPtr);
|
588 |
|
|
if ((pkgPtr->version != NULL) || (pkgPtr->availPtr != NULL)) {
|
589 |
|
|
Tcl_AppendElement(interp, Tcl_GetHashKey(tablePtr, hPtr));
|
590 |
|
|
}
|
591 |
|
|
}
|
592 |
|
|
break;
|
593 |
|
|
}
|
594 |
|
|
case PKG_PRESENT: {
|
595 |
|
|
if (objc < 3) {
|
596 |
|
|
presentSyntax:
|
597 |
|
|
Tcl_WrongNumArgs(interp, 2, objv, "?-exact? package ?version?");
|
598 |
|
|
return TCL_ERROR;
|
599 |
|
|
}
|
600 |
|
|
argv2 = Tcl_GetString(objv[2]);
|
601 |
|
|
if ((argv2[0] == '-') && (strcmp(argv2, "-exact") == 0)) {
|
602 |
|
|
exact = 1;
|
603 |
|
|
} else {
|
604 |
|
|
exact = 0;
|
605 |
|
|
}
|
606 |
|
|
version = NULL;
|
607 |
|
|
if (objc == (4 + exact)) {
|
608 |
|
|
version = Tcl_GetString(objv[3 + exact]);
|
609 |
|
|
if (CheckVersion(interp, version) != TCL_OK) {
|
610 |
|
|
return TCL_ERROR;
|
611 |
|
|
}
|
612 |
|
|
} else if ((objc != 3) || exact) {
|
613 |
|
|
goto presentSyntax;
|
614 |
|
|
}
|
615 |
|
|
if (exact) {
|
616 |
|
|
argv3 = Tcl_GetString(objv[3]);
|
617 |
|
|
version = Tcl_PkgPresent(interp, argv3, version, exact);
|
618 |
|
|
} else {
|
619 |
|
|
version = Tcl_PkgPresent(interp, argv2, version, exact);
|
620 |
|
|
}
|
621 |
|
|
if (version == NULL) {
|
622 |
|
|
return TCL_ERROR;
|
623 |
|
|
}
|
624 |
|
|
Tcl_SetResult(interp, version, TCL_VOLATILE);
|
625 |
|
|
break;
|
626 |
|
|
}
|
627 |
|
|
case PKG_PROVIDE: {
|
628 |
|
|
if ((objc != 3) && (objc != 4)) {
|
629 |
|
|
Tcl_WrongNumArgs(interp, 2, objv, "package ?version?");
|
630 |
|
|
return TCL_ERROR;
|
631 |
|
|
}
|
632 |
|
|
argv2 = Tcl_GetString(objv[2]);
|
633 |
|
|
if (objc == 3) {
|
634 |
|
|
hPtr = Tcl_FindHashEntry(&iPtr->packageTable, argv2);
|
635 |
|
|
if (hPtr != NULL) {
|
636 |
|
|
pkgPtr = (Package *) Tcl_GetHashValue(hPtr);
|
637 |
|
|
if (pkgPtr->version != NULL) {
|
638 |
|
|
Tcl_SetResult(interp, pkgPtr->version, TCL_VOLATILE);
|
639 |
|
|
}
|
640 |
|
|
}
|
641 |
|
|
return TCL_OK;
|
642 |
|
|
}
|
643 |
|
|
argv3 = Tcl_GetString(objv[3]);
|
644 |
|
|
if (CheckVersion(interp, argv3) != TCL_OK) {
|
645 |
|
|
return TCL_ERROR;
|
646 |
|
|
}
|
647 |
|
|
return Tcl_PkgProvide(interp, argv2, argv3);
|
648 |
|
|
}
|
649 |
|
|
case PKG_REQUIRE: {
|
650 |
|
|
if (objc < 3) {
|
651 |
|
|
requireSyntax:
|
652 |
|
|
Tcl_WrongNumArgs(interp, 2, objv, "?-exact? package ?version?");
|
653 |
|
|
return TCL_ERROR;
|
654 |
|
|
}
|
655 |
|
|
argv2 = Tcl_GetString(objv[2]);
|
656 |
|
|
if ((argv2[0] == '-') && (strcmp(argv2, "-exact") == 0)) {
|
657 |
|
|
exact = 1;
|
658 |
|
|
} else {
|
659 |
|
|
exact = 0;
|
660 |
|
|
}
|
661 |
|
|
version = NULL;
|
662 |
|
|
if (objc == (4 + exact)) {
|
663 |
|
|
version = Tcl_GetString(objv[3 + exact]);
|
664 |
|
|
if (CheckVersion(interp, version) != TCL_OK) {
|
665 |
|
|
return TCL_ERROR;
|
666 |
|
|
}
|
667 |
|
|
} else if ((objc != 3) || exact) {
|
668 |
|
|
goto requireSyntax;
|
669 |
|
|
}
|
670 |
|
|
if (exact) {
|
671 |
|
|
argv3 = Tcl_GetString(objv[3]);
|
672 |
|
|
version = Tcl_PkgRequire(interp, argv3, version, exact);
|
673 |
|
|
} else {
|
674 |
|
|
version = Tcl_PkgRequire(interp, argv2, version, exact);
|
675 |
|
|
}
|
676 |
|
|
if (version == NULL) {
|
677 |
|
|
return TCL_ERROR;
|
678 |
|
|
}
|
679 |
|
|
Tcl_SetResult(interp, version, TCL_VOLATILE);
|
680 |
|
|
break;
|
681 |
|
|
}
|
682 |
|
|
case PKG_UNKNOWN: {
|
683 |
|
|
int length;
|
684 |
|
|
if (objc == 2) {
|
685 |
|
|
if (iPtr->packageUnknown != NULL) {
|
686 |
|
|
Tcl_SetResult(interp, iPtr->packageUnknown, TCL_VOLATILE);
|
687 |
|
|
}
|
688 |
|
|
} else if (objc == 3) {
|
689 |
|
|
if (iPtr->packageUnknown != NULL) {
|
690 |
|
|
ckfree(iPtr->packageUnknown);
|
691 |
|
|
}
|
692 |
|
|
argv2 = Tcl_GetStringFromObj(objv[2], &length);
|
693 |
|
|
if (argv2[0] == 0) {
|
694 |
|
|
iPtr->packageUnknown = NULL;
|
695 |
|
|
} else {
|
696 |
|
|
iPtr->packageUnknown = (char *) ckalloc((unsigned)
|
697 |
|
|
(length + 1));
|
698 |
|
|
strcpy(iPtr->packageUnknown, argv2);
|
699 |
|
|
}
|
700 |
|
|
} else {
|
701 |
|
|
Tcl_WrongNumArgs(interp, 2, objv, "?command?");
|
702 |
|
|
return TCL_ERROR;
|
703 |
|
|
}
|
704 |
|
|
break;
|
705 |
|
|
}
|
706 |
|
|
case PKG_VCOMPARE: {
|
707 |
|
|
if (objc != 4) {
|
708 |
|
|
Tcl_WrongNumArgs(interp, 2, objv, "version1 version2");
|
709 |
|
|
return TCL_ERROR;
|
710 |
|
|
}
|
711 |
|
|
argv3 = Tcl_GetString(objv[3]);
|
712 |
|
|
argv2 = Tcl_GetString(objv[2]);
|
713 |
|
|
if ((CheckVersion(interp, argv2) != TCL_OK)
|
714 |
|
|
|| (CheckVersion(interp, argv3) != TCL_OK)) {
|
715 |
|
|
return TCL_ERROR;
|
716 |
|
|
}
|
717 |
|
|
Tcl_SetIntObj(Tcl_GetObjResult(interp),
|
718 |
|
|
ComparePkgVersions(argv2, argv3, (int *) NULL));
|
719 |
|
|
break;
|
720 |
|
|
}
|
721 |
|
|
case PKG_VERSIONS: {
|
722 |
|
|
if (objc != 3) {
|
723 |
|
|
Tcl_WrongNumArgs(interp, 2, objv, "package");
|
724 |
|
|
return TCL_ERROR;
|
725 |
|
|
}
|
726 |
|
|
argv2 = Tcl_GetString(objv[2]);
|
727 |
|
|
hPtr = Tcl_FindHashEntry(&iPtr->packageTable, argv2);
|
728 |
|
|
if (hPtr != NULL) {
|
729 |
|
|
pkgPtr = (Package *) Tcl_GetHashValue(hPtr);
|
730 |
|
|
for (availPtr = pkgPtr->availPtr; availPtr != NULL;
|
731 |
|
|
availPtr = availPtr->nextPtr) {
|
732 |
|
|
Tcl_AppendElement(interp, availPtr->version);
|
733 |
|
|
}
|
734 |
|
|
}
|
735 |
|
|
break;
|
736 |
|
|
}
|
737 |
|
|
case PKG_VSATISFIES: {
|
738 |
|
|
if (objc != 4) {
|
739 |
|
|
Tcl_WrongNumArgs(interp, 2, objv, "version1 version2");
|
740 |
|
|
return TCL_ERROR;
|
741 |
|
|
}
|
742 |
|
|
argv3 = Tcl_GetString(objv[3]);
|
743 |
|
|
argv2 = Tcl_GetString(objv[2]);
|
744 |
|
|
if ((CheckVersion(interp, argv2) != TCL_OK)
|
745 |
|
|
|| (CheckVersion(interp, argv3) != TCL_OK)) {
|
746 |
|
|
return TCL_ERROR;
|
747 |
|
|
}
|
748 |
|
|
ComparePkgVersions(argv2, argv3, &satisfies);
|
749 |
|
|
Tcl_SetIntObj(Tcl_GetObjResult(interp), satisfies);
|
750 |
|
|
break;
|
751 |
|
|
}
|
752 |
|
|
default: {
|
753 |
|
|
panic("Tcl_PackageObjCmd: bad option index to pkgOptions");
|
754 |
|
|
}
|
755 |
|
|
}
|
756 |
|
|
return TCL_OK;
|
757 |
|
|
}
|
758 |
|
|
|
759 |
|
|
/*
|
760 |
|
|
*----------------------------------------------------------------------
|
761 |
|
|
*
|
762 |
|
|
* FindPackage --
|
763 |
|
|
*
|
764 |
|
|
* This procedure finds the Package record for a particular package
|
765 |
|
|
* in a particular interpreter, creating a record if one doesn't
|
766 |
|
|
* already exist.
|
767 |
|
|
*
|
768 |
|
|
* Results:
|
769 |
|
|
* The return value is a pointer to the Package record for the
|
770 |
|
|
* package.
|
771 |
|
|
*
|
772 |
|
|
* Side effects:
|
773 |
|
|
* A new Package record may be created.
|
774 |
|
|
*
|
775 |
|
|
*----------------------------------------------------------------------
|
776 |
|
|
*/
|
777 |
|
|
|
778 |
|
|
static Package *
|
779 |
|
|
FindPackage(interp, name)
|
780 |
|
|
Tcl_Interp *interp; /* Interpreter to use for package lookup. */
|
781 |
|
|
char *name; /* Name of package to fine. */
|
782 |
|
|
{
|
783 |
|
|
Interp *iPtr = (Interp *) interp;
|
784 |
|
|
Tcl_HashEntry *hPtr;
|
785 |
|
|
int new;
|
786 |
|
|
Package *pkgPtr;
|
787 |
|
|
|
788 |
|
|
hPtr = Tcl_CreateHashEntry(&iPtr->packageTable, name, &new);
|
789 |
|
|
if (new) {
|
790 |
|
|
pkgPtr = (Package *) ckalloc(sizeof(Package));
|
791 |
|
|
pkgPtr->version = NULL;
|
792 |
|
|
pkgPtr->availPtr = NULL;
|
793 |
|
|
pkgPtr->clientData = NULL;
|
794 |
|
|
Tcl_SetHashValue(hPtr, pkgPtr);
|
795 |
|
|
} else {
|
796 |
|
|
pkgPtr = (Package *) Tcl_GetHashValue(hPtr);
|
797 |
|
|
}
|
798 |
|
|
return pkgPtr;
|
799 |
|
|
}
|
800 |
|
|
|
801 |
|
|
/*
|
802 |
|
|
*----------------------------------------------------------------------
|
803 |
|
|
*
|
804 |
|
|
* TclFreePackageInfo --
|
805 |
|
|
*
|
806 |
|
|
* This procedure is called during interpreter deletion to
|
807 |
|
|
* free all of the package-related information for the
|
808 |
|
|
* interpreter.
|
809 |
|
|
*
|
810 |
|
|
* Results:
|
811 |
|
|
* None.
|
812 |
|
|
*
|
813 |
|
|
* Side effects:
|
814 |
|
|
* Memory is freed.
|
815 |
|
|
*
|
816 |
|
|
*----------------------------------------------------------------------
|
817 |
|
|
*/
|
818 |
|
|
|
819 |
|
|
void
|
820 |
|
|
TclFreePackageInfo(iPtr)
|
821 |
|
|
Interp *iPtr; /* Interpereter that is being deleted. */
|
822 |
|
|
{
|
823 |
|
|
Package *pkgPtr;
|
824 |
|
|
Tcl_HashSearch search;
|
825 |
|
|
Tcl_HashEntry *hPtr;
|
826 |
|
|
PkgAvail *availPtr;
|
827 |
|
|
|
828 |
|
|
for (hPtr = Tcl_FirstHashEntry(&iPtr->packageTable, &search);
|
829 |
|
|
hPtr != NULL; hPtr = Tcl_NextHashEntry(&search)) {
|
830 |
|
|
pkgPtr = (Package *) Tcl_GetHashValue(hPtr);
|
831 |
|
|
if (pkgPtr->version != NULL) {
|
832 |
|
|
ckfree(pkgPtr->version);
|
833 |
|
|
}
|
834 |
|
|
while (pkgPtr->availPtr != NULL) {
|
835 |
|
|
availPtr = pkgPtr->availPtr;
|
836 |
|
|
pkgPtr->availPtr = availPtr->nextPtr;
|
837 |
|
|
ckfree(availPtr->version);
|
838 |
|
|
Tcl_EventuallyFree((ClientData)availPtr->script, TCL_DYNAMIC);
|
839 |
|
|
ckfree((char *) availPtr);
|
840 |
|
|
}
|
841 |
|
|
ckfree((char *) pkgPtr);
|
842 |
|
|
}
|
843 |
|
|
Tcl_DeleteHashTable(&iPtr->packageTable);
|
844 |
|
|
if (iPtr->packageUnknown != NULL) {
|
845 |
|
|
ckfree(iPtr->packageUnknown);
|
846 |
|
|
}
|
847 |
|
|
}
|
848 |
|
|
|
849 |
|
|
/*
|
850 |
|
|
*----------------------------------------------------------------------
|
851 |
|
|
*
|
852 |
|
|
* CheckVersion --
|
853 |
|
|
*
|
854 |
|
|
* This procedure checks to see whether a version number has
|
855 |
|
|
* valid syntax.
|
856 |
|
|
*
|
857 |
|
|
* Results:
|
858 |
|
|
* If string is a properly formed version number the TCL_OK
|
859 |
|
|
* is returned. Otherwise TCL_ERROR is returned and an error
|
860 |
|
|
* message is left in the interp's result.
|
861 |
|
|
*
|
862 |
|
|
* Side effects:
|
863 |
|
|
* None.
|
864 |
|
|
*
|
865 |
|
|
*----------------------------------------------------------------------
|
866 |
|
|
*/
|
867 |
|
|
|
868 |
|
|
static int
|
869 |
|
|
CheckVersion(interp, string)
|
870 |
|
|
Tcl_Interp *interp; /* Used for error reporting. */
|
871 |
|
|
char *string; /* Supposedly a version number, which is
|
872 |
|
|
* groups of decimal digits separated
|
873 |
|
|
* by dots. */
|
874 |
|
|
{
|
875 |
|
|
char *p = string;
|
876 |
|
|
char prevChar;
|
877 |
|
|
|
878 |
|
|
if (!isdigit(UCHAR(*p))) { /* INTL: digit */
|
879 |
|
|
goto error;
|
880 |
|
|
}
|
881 |
|
|
for (prevChar = *p, p++; *p != 0; p++) {
|
882 |
|
|
if (!isdigit(UCHAR(*p)) &&
|
883 |
|
|
((*p != '.') || (prevChar == '.'))) { /* INTL: digit */
|
884 |
|
|
goto error;
|
885 |
|
|
}
|
886 |
|
|
prevChar = *p;
|
887 |
|
|
}
|
888 |
|
|
if (prevChar != '.') {
|
889 |
|
|
return TCL_OK;
|
890 |
|
|
}
|
891 |
|
|
|
892 |
|
|
error:
|
893 |
|
|
Tcl_AppendResult(interp, "expected version number but got \"",
|
894 |
|
|
string, "\"", (char *) NULL);
|
895 |
|
|
return TCL_ERROR;
|
896 |
|
|
}
|
897 |
|
|
|
898 |
|
|
/*
|
899 |
|
|
*----------------------------------------------------------------------
|
900 |
|
|
*
|
901 |
|
|
* ComparePkgVersions --
|
902 |
|
|
*
|
903 |
|
|
* This procedure compares two version numbers.
|
904 |
|
|
*
|
905 |
|
|
* Results:
|
906 |
|
|
* The return value is -1 if v1 is less than v2, 0 if the two
|
907 |
|
|
* version numbers are the same, and 1 if v1 is greater than v2.
|
908 |
|
|
* If *satPtr is non-NULL, the word it points to is filled in
|
909 |
|
|
* with 1 if v2 >= v1 and both numbers have the same major number
|
910 |
|
|
* or 0 otherwise.
|
911 |
|
|
*
|
912 |
|
|
* Side effects:
|
913 |
|
|
* None.
|
914 |
|
|
*
|
915 |
|
|
*----------------------------------------------------------------------
|
916 |
|
|
*/
|
917 |
|
|
|
918 |
|
|
static int
|
919 |
|
|
ComparePkgVersions(v1, v2, satPtr)
|
920 |
|
|
char *v1, *v2; /* Versions strings, of form 2.1.3 (any
|
921 |
|
|
* number of version numbers). */
|
922 |
|
|
int *satPtr; /* If non-null, the word pointed to is
|
923 |
|
|
* filled in with a 0/1 value. 1 means
|
924 |
|
|
* v1 "satisfies" v2: v1 is greater than
|
925 |
|
|
* or equal to v2 and both version numbers
|
926 |
|
|
* have the same major number. */
|
927 |
|
|
{
|
928 |
|
|
int thisIsMajor, n1, n2;
|
929 |
|
|
|
930 |
|
|
/*
|
931 |
|
|
* Each iteration of the following loop processes one number from
|
932 |
|
|
* each string, terminated by a ".". If those numbers don't match
|
933 |
|
|
* then the comparison is over; otherwise, we loop back for the
|
934 |
|
|
* next number.
|
935 |
|
|
*/
|
936 |
|
|
|
937 |
|
|
thisIsMajor = 1;
|
938 |
|
|
while (1) {
|
939 |
|
|
/*
|
940 |
|
|
* Parse one decimal number from the front of each string.
|
941 |
|
|
*/
|
942 |
|
|
|
943 |
|
|
n1 = n2 = 0;
|
944 |
|
|
while ((*v1 != 0) && (*v1 != '.')) {
|
945 |
|
|
n1 = 10*n1 + (*v1 - '0');
|
946 |
|
|
v1++;
|
947 |
|
|
}
|
948 |
|
|
while ((*v2 != 0) && (*v2 != '.')) {
|
949 |
|
|
n2 = 10*n2 + (*v2 - '0');
|
950 |
|
|
v2++;
|
951 |
|
|
}
|
952 |
|
|
|
953 |
|
|
/*
|
954 |
|
|
* Compare and go on to the next version number if the
|
955 |
|
|
* current numbers match.
|
956 |
|
|
*/
|
957 |
|
|
|
958 |
|
|
if (n1 != n2) {
|
959 |
|
|
break;
|
960 |
|
|
}
|
961 |
|
|
if (*v1 != 0) {
|
962 |
|
|
v1++;
|
963 |
|
|
} else if (*v2 == 0) {
|
964 |
|
|
break;
|
965 |
|
|
}
|
966 |
|
|
if (*v2 != 0) {
|
967 |
|
|
v2++;
|
968 |
|
|
}
|
969 |
|
|
thisIsMajor = 0;
|
970 |
|
|
}
|
971 |
|
|
if (satPtr != NULL) {
|
972 |
|
|
*satPtr = (n1 == n2) || ((n1 > n2) && !thisIsMajor);
|
973 |
|
|
}
|
974 |
|
|
if (n1 > n2) {
|
975 |
|
|
return 1;
|
976 |
|
|
} else if (n1 == n2) {
|
977 |
|
|
return 0;
|
978 |
|
|
} else {
|
979 |
|
|
return -1;
|
980 |
|
|
}
|
981 |
|
|
}
|
982 |
|
|
|
983 |
|
|
|
984 |
|
|
/* $History: tclpkg.c $
|
985 |
|
|
*
|
986 |
|
|
* ***************** Version 1 *****************
|
987 |
|
|
* User: Dtashley Date: 1/02/01 Time: 1:37a
|
988 |
|
|
* Created in $/IjuScripter, IjuConsole/Source/Tcl Base
|
989 |
|
|
* Initial check-in.
|
990 |
|
|
*/
|
991 |
|
|
|
992 |
|
|
/* End of TCLPKG.C */ |