diff options
author | dgp <dgp@users.sourceforge.net> | 2018-05-08 15:22:49 (GMT) |
---|---|---|
committer | dgp <dgp@users.sourceforge.net> | 2018-05-08 15:22:49 (GMT) |
commit | 56af8c1770e00895a8862d52563e3942dfb3b2df (patch) | |
tree | 22622d4db3cbabf4dc2c39d34b27aa053f7bdbf3 /generic/tclCmdMZ.c | |
parent | 97b08c9a24dd40233c45c0637be7370972ec7b0c (diff) | |
parent | 7f26fedbccc3c9f7908417c0abe1cceae115a237 (diff) | |
download | tcl-56af8c1770e00895a8862d52563e3942dfb3b2df.zip tcl-56af8c1770e00895a8862d52563e3942dfb3b2df.tar.gz tcl-56af8c1770e00895a8862d52563e3942dfb3b2df.tar.bz2 |
merge 8.7
Diffstat (limited to 'generic/tclCmdMZ.c')
-rw-r--r-- | generic/tclCmdMZ.c | 212 |
1 files changed, 41 insertions, 171 deletions
diff --git a/generic/tclCmdMZ.c b/generic/tclCmdMZ.c index f8b85b4..7e60e9d 100644 --- a/generic/tclCmdMZ.c +++ b/generic/tclCmdMZ.c @@ -2544,10 +2544,8 @@ StringEqualCmd( * the expr string comparison in INST_EQ/INST_NEQ/INST_LT/...). */ - const char *string1, *string2; - int length1, length2, i, match, length, nocase = 0, reqlength = -1; - typedef int (*strCmpFn_t)(const char *, const char *, unsigned int); - strCmpFn_t strCmpFn; + const char *string2; + int length, i, match, nocase = 0, reqlength = -1; if (objc < 3 || objc > 6) { str_cmp_args: @@ -2557,11 +2555,11 @@ StringEqualCmd( } for (i = 1; i < objc-2; i++) { - string2 = TclGetStringFromObj(objv[i], &length2); - if ((length2 > 1) && !strncmp(string2, "-nocase", (size_t)length2)) { + string2 = TclGetStringFromObj(objv[i], &length); + if ((length > 1) && !strncmp(string2, "-nocase", (size_t)length)) { nocase = 1; - } else if ((length2 > 1) - && !strncmp(string2, "-length", (size_t)length2)) { + } else if ((length > 1) + && !strncmp(string2, "-length", (size_t)length)) { if (i+1 >= objc-2) { goto str_cmp_args; } @@ -2586,78 +2584,7 @@ StringEqualCmd( objv += objc-2; - if ((reqlength == 0) || (objv[0] == objv[1])) { - /* - * Always match at 0 chars of if it is the same obj. - */ - - Tcl_SetObjResult(interp, Tcl_NewBooleanObj(1)); - return TCL_OK; - } - - if (!nocase && TclIsPureByteArray(objv[0]) && - TclIsPureByteArray(objv[1])) { - /* - * Use binary versions of comparisons since that won't cause undue - * type conversions and it is much faster. Only do this if we're - * case-sensitive (which is all that really makes sense with byte - * arrays anyway, and we have no memcasecmp() for some reason... :^) - */ - - string1 = (char *) Tcl_GetByteArrayFromObj(objv[0], &length1); - string2 = (char *) Tcl_GetByteArrayFromObj(objv[1], &length2); - strCmpFn = (strCmpFn_t) memcmp; - } else if ((objv[0]->typePtr == &tclStringType) - && (objv[1]->typePtr == &tclStringType)) { - /* - * Do a unicode-specific comparison if both of the args are of String - * type. In benchmark testing this proved the most efficient check - * between the unicode and string comparison operations. - */ - - string1 = (char *) Tcl_GetUnicodeFromObj(objv[0], &length1); - string2 = (char *) Tcl_GetUnicodeFromObj(objv[1], &length2); - strCmpFn = (strCmpFn_t) - (nocase ? Tcl_UniCharNcasecmp : Tcl_UniCharNcmp); - } else { - /* - * As a catch-all we will work with UTF-8. We cannot use memcmp() as - * that is unsafe with any string containing NUL (\xC0\x80 in Tcl's - * utf rep). We can use the more efficient TclpUtfNcmp2 if we are - * case-sensitive and no specific length was requested. - */ - - string1 = (char *) TclGetStringFromObj(objv[0], &length1); - string2 = (char *) TclGetStringFromObj(objv[1], &length2); - if ((reqlength < 0) && !nocase) { - strCmpFn = (strCmpFn_t) TclpUtfNcmp2; - } else { - length1 = Tcl_NumUtfChars(string1, length1); - length2 = Tcl_NumUtfChars(string2, length2); - strCmpFn = (strCmpFn_t) (nocase ? Tcl_UtfNcasecmp : Tcl_UtfNcmp); - } - } - - if ((reqlength < 0) && (length1 != length2)) { - match = 1; /* This will be reversed below. */ - } else { - length = (length1 < length2) ? length1 : length2; - if (reqlength > 0 && reqlength < length) { - length = reqlength; - } else if (reqlength < 0) { - /* - * The requested length is negative, so we ignore it by setting it - * to length + 1 so we correct the match var. - */ - - reqlength = length + 1; - } - - match = strCmpFn(string1, string2, (unsigned) length); - if ((match == 0) && (reqlength > length)) { - match = length1 - length2; - } - } + match = TclStringCmp (objv[0], objv[1], 0, nocase, reqlength); Tcl_SetObjResult(interp, Tcl_NewBooleanObj(match ? 0 : 1)); return TCL_OK; @@ -2694,11 +2621,33 @@ StringCmpCmd( * the expr string comparison in INST_EQ/INST_NEQ/INST_LT/...). */ - const char *string1, *string2; - int length1, length2, i, match, length, nocase = 0, reqlength = -1; - typedef int (*strCmpFn_t)(const char *, const char *, unsigned int); - strCmpFn_t strCmpFn; + int match, nocase, reqlength, status; + + if ((status = TclStringCmpOpts(interp, objc, objv, &nocase, &reqlength)) + != TCL_OK) { + + return status; + } + + objv += objc-2; + match = TclStringCmp (objv[0], objv[1], 0, nocase, reqlength); + Tcl_SetObjResult(interp, Tcl_NewIntObj(match)); + return TCL_OK; +} + +int TclStringCmpOpts ( + Tcl_Interp *interp, /* Current interpreter. */ + int objc, /* Number of arguments. */ + Tcl_Obj *const objv[], /* Argument objects. */ + int *nocase, + int *reqlength +) +{ + int i, length; + const char *string; + *reqlength = -1; + *nocase = 0; if (objc < 3 || objc > 6) { str_cmp_args: Tcl_WrongNumArgs(interp, 1, objv, @@ -2707,106 +2656,27 @@ StringCmpCmd( } for (i = 1; i < objc-2; i++) { - string2 = TclGetStringFromObj(objv[i], &length2); - if ((length2 > 1) && !strncmp(string2, "-nocase", (size_t)length2)) { - nocase = 1; - } else if ((length2 > 1) - && !strncmp(string2, "-length", (size_t)length2)) { + string = TclGetStringFromObj(objv[i], &length); + if ((length > 1) && !strncmp(string, "-nocase", (size_t)length)) { + *nocase = 1; + } else if ((length > 1) + && !strncmp(string, "-length", (size_t)length)) { if (i+1 >= objc-2) { goto str_cmp_args; } i++; - if (TclGetIntFromObj(interp, objv[i], &reqlength) != TCL_OK) { + if (TclGetIntFromObj(interp, objv[i], reqlength) != TCL_OK) { return TCL_ERROR; } } else { Tcl_SetObjResult(interp, Tcl_ObjPrintf( "bad option \"%s\": must be -nocase or -length", - string2)); + string)); Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "INDEX", "option", - string2, NULL); + string, NULL); return TCL_ERROR; } } - - /* - * From now on, we only access the two objects at the end of the argument - * array. - */ - - objv += objc-2; - - if ((reqlength == 0) || (objv[0] == objv[1])) { - /* - * Always match at 0 chars of if it is the same obj. - */ - - Tcl_SetObjResult(interp, Tcl_NewBooleanObj(0)); - return TCL_OK; - } - - if (!nocase && TclIsPureByteArray(objv[0]) && - TclIsPureByteArray(objv[1])) { - /* - * Use binary versions of comparisons since that won't cause undue - * type conversions and it is much faster. Only do this if we're - * case-sensitive (which is all that really makes sense with byte - * arrays anyway, and we have no memcasecmp() for some reason... :^) - */ - - string1 = (char *) Tcl_GetByteArrayFromObj(objv[0], &length1); - string2 = (char *) Tcl_GetByteArrayFromObj(objv[1], &length2); - strCmpFn = (strCmpFn_t) memcmp; - } else if ((objv[0]->typePtr == &tclStringType) - && (objv[1]->typePtr == &tclStringType)) { - /* - * Do a unicode-specific comparison if both of the args are of String - * type. In benchmark testing this proved the most efficient check - * between the unicode and string comparison operations. - */ - - string1 = (char *) Tcl_GetUnicodeFromObj(objv[0], &length1); - string2 = (char *) Tcl_GetUnicodeFromObj(objv[1], &length2); - strCmpFn = (strCmpFn_t) - (nocase ? Tcl_UniCharNcasecmp : Tcl_UniCharNcmp); - } else { - /* - * As a catch-all we will work with UTF-8. We cannot use memcmp() as - * that is unsafe with any string containing NUL (\xC0\x80 in Tcl's - * utf rep). We can use the more efficient TclpUtfNcmp2 if we are - * case-sensitive and no specific length was requested. - */ - - string1 = (char *) TclGetStringFromObj(objv[0], &length1); - string2 = (char *) TclGetStringFromObj(objv[1], &length2); - if ((reqlength < 0) && !nocase) { - strCmpFn = (strCmpFn_t) TclpUtfNcmp2; - } else { - length1 = Tcl_NumUtfChars(string1, length1); - length2 = Tcl_NumUtfChars(string2, length2); - strCmpFn = (strCmpFn_t) (nocase ? Tcl_UtfNcasecmp : Tcl_UtfNcmp); - } - } - - length = (length1 < length2) ? length1 : length2; - if (reqlength > 0 && reqlength < length) { - length = reqlength; - } else if (reqlength < 0) { - /* - * The requested length is negative, so we ignore it by setting it to - * length + 1 so we correct the match var. - */ - - reqlength = length + 1; - } - - match = strCmpFn(string1, string2, (unsigned) length); - if ((match == 0) && (reqlength > length)) { - match = length1 - length2; - } - - Tcl_SetObjResult(interp, - Tcl_NewIntObj((match > 0) ? 1 : (match < 0) ? -1 : 0)); return TCL_OK; } |