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| author | jan.nijtmans <nijtmans@users.sourceforge.net> | 2017-12-28 18:49:24 (GMT) |
|---|---|---|
| committer | jan.nijtmans <nijtmans@users.sourceforge.net> | 2017-12-28 18:49:24 (GMT) |
| commit | 301f6bcb839b301e1e3d3a92e3713696780c95ca (patch) | |
| tree | 0c97bb2d068e490d06533031c935061a67781a95 | |
| parent | 9a7ce78e965b9066530810b359b0b968667de251 (diff) | |
| download | tcl-301f6bcb839b301e1e3d3a92e3713696780c95ca.zip tcl-301f6bcb839b301e1e3d3a92e3713696780c95ca.tar.gz tcl-301f6bcb839b301e1e3d3a92e3713696780c95ca.tar.bz2 | |
Fix handling of surrogates (when TCL_UTF_MAX > 3) in Tcl_UtfNcmp()/Tcl_UtfNcasecmp()/TclUtfCasecmp(). Backported from core-8-branch, where this was fixed already.
| -rw-r--r-- | generic/tclPkg.c | 6 | ||||
| -rw-r--r-- | generic/tclUtf.c | 57 |
2 files changed, 32 insertions, 31 deletions
diff --git a/generic/tclPkg.c b/generic/tclPkg.c index 4f6faa8..6d826a9 100644 --- a/generic/tclPkg.c +++ b/generic/tclPkg.c @@ -414,7 +414,7 @@ PkgRequireCore( continue; } - + /* Check satisfaction of requirements before considering the current version further. */ if (reqc > 0) { satisfies = SomeRequirementSatisfied(availVersion, reqc, reqv); @@ -424,7 +424,7 @@ PkgRequireCore( continue; } } - + if (bestPtr != NULL) { int res = CompareVersions(availVersion, bestVersion, NULL); @@ -485,7 +485,7 @@ PkgRequireCore( /* * Clean up memorized internal reps, if any. */ - + if (bestVersion != NULL) { ckfree(bestVersion); bestVersion = NULL; diff --git a/generic/tclUtf.c b/generic/tclUtf.c index c60e99e..6255a4e 100644 --- a/generic/tclUtf.c +++ b/generic/tclUtf.c @@ -726,8 +726,7 @@ Tcl_UniCharAtIndex( { Tcl_UniChar ch = 0; - while (index >= 0) { - index--; + while (index-- >= 0) { src += TclUtfToUniChar(src, &ch); } return ch; @@ -757,8 +756,7 @@ Tcl_UtfAtIndex( { Tcl_UniChar ch = 0; - while (index > 0) { - index--; + while (index-- > 0) { src += TclUtfToUniChar(src, &ch); } return src; @@ -1072,16 +1070,17 @@ Tcl_UtfNcmp( cs += TclUtfToUniChar(cs, &ch1); ct += TclUtfToUniChar(ct, &ch2); + if (ch1 != ch2) { #if TCL_UTF_MAX == 4 - /* map high surrogate characters to values > 0xffff */ - if ((ch1 & 0xFC00) == 0xD800) { - ch1 += 0x4000; - } - if ((ch2 & 0xFC00) == 0xD800) { - ch2 += 0x4000; - } + /* Surrogates always report higher than non-surrogates */ + if (((ch1 & 0xFC00) == 0xD800)) { + if ((ch2 & 0xFC00) != 0xD800) { + return ch1; + } + } else if ((ch2 & 0xFC00) == 0xD800) { + return -ch2; + } #endif - if (ch1 != ch2) { return (ch1 - ch2); } } @@ -1122,16 +1121,17 @@ Tcl_UtfNcasecmp( */ cs += TclUtfToUniChar(cs, &ch1); ct += TclUtfToUniChar(ct, &ch2); + if (ch1 != ch2) { #if TCL_UTF_MAX == 4 - /* map high surrogate characters to values > 0xffff */ - if ((ch1 & 0xFC00) == 0xD800) { - ch1 += 0x4000; - } - if ((ch2 & 0xFC00) == 0xD800) { - ch2 += 0x4000; - } + /* Surrogates always report higher than non-surrogates */ + if (((ch1 & 0xFC00) == 0xD800)) { + if ((ch2 & 0xFC00) != 0xD800) { + return ch1; + } + } else if ((ch2 & 0xFC00) == 0xD800) { + return -ch2; + } #endif - if (ch1 != ch2) { ch1 = Tcl_UniCharToLower(ch1); ch2 = Tcl_UniCharToLower(ch2); if (ch1 != ch2) { @@ -1170,16 +1170,17 @@ TclUtfCasecmp( while (*cs && *ct) { cs += TclUtfToUniChar(cs, &ch1); ct += TclUtfToUniChar(ct, &ch2); + if (ch1 != ch2) { #if TCL_UTF_MAX == 4 - /* map high surrogate characters to values > 0xffff */ - if ((ch1 & 0xFC00) == 0xD800) { - ch1 += 0x4000; - } - if ((ch2 & 0xFC00) == 0xD800) { - ch2 += 0x4000; - } + /* Surrogates always report higher than non-surrogates */ + if (((ch1 & 0xFC00) == 0xD800)) { + if ((ch2 & 0xFC00) != 0xD800) { + return ch1; + } + } else if ((ch2 & 0xFC00) == 0xD800) { + return -ch2; + } #endif - if (ch1 != ch2) { ch1 = Tcl_UniCharToLower(ch1); ch2 = Tcl_UniCharToLower(ch2); if (ch1 != ch2) { |