git-gui / lib / encoding.tclon commit Merge branch 'ap/maint-apply-modefix' (caf8b2f)
   1# git-gui encoding support
   2# Copyright (C) 2005 Paul Mackerras <paulus@samba.org>
   3# (Copied from gitk, commit fd8ccbec4f0161)
   4
   5# This list of encoding names and aliases is distilled from
   6# http://www.iana.org/assignments/character-sets.
   7# Not all of them are supported by Tcl.
   8set encoding_aliases {
   9    { ANSI_X3.4-1968 iso-ir-6 ANSI_X3.4-1986 ISO_646.irv:1991 ASCII
  10      ISO646-US US-ASCII us IBM367 cp367 csASCII }
  11    { ISO-10646-UTF-1 csISO10646UTF1 }
  12    { ISO_646.basic:1983 ref csISO646basic1983 }
  13    { INVARIANT csINVARIANT }
  14    { ISO_646.irv:1983 iso-ir-2 irv csISO2IntlRefVersion }
  15    { BS_4730 iso-ir-4 ISO646-GB gb uk csISO4UnitedKingdom }
  16    { NATS-SEFI iso-ir-8-1 csNATSSEFI }
  17    { NATS-SEFI-ADD iso-ir-8-2 csNATSSEFIADD }
  18    { NATS-DANO iso-ir-9-1 csNATSDANO }
  19    { NATS-DANO-ADD iso-ir-9-2 csNATSDANOADD }
  20    { SEN_850200_B iso-ir-10 FI ISO646-FI ISO646-SE se csISO10Swedish }
  21    { SEN_850200_C iso-ir-11 ISO646-SE2 se2 csISO11SwedishForNames }
  22    { KS_C_5601-1987 iso-ir-149 KS_C_5601-1989 KSC_5601 korean csKSC56011987 }
  23    { ISO-2022-KR csISO2022KR }
  24    { EUC-KR csEUCKR }
  25    { ISO-2022-JP csISO2022JP }
  26    { ISO-2022-JP-2 csISO2022JP2 }
  27    { JIS_C6220-1969-jp JIS_C6220-1969 iso-ir-13 katakana x0201-7
  28      csISO13JISC6220jp }
  29    { JIS_C6220-1969-ro iso-ir-14 jp ISO646-JP csISO14JISC6220ro }
  30    { IT iso-ir-15 ISO646-IT csISO15Italian }
  31    { PT iso-ir-16 ISO646-PT csISO16Portuguese }
  32    { ES iso-ir-17 ISO646-ES csISO17Spanish }
  33    { greek7-old iso-ir-18 csISO18Greek7Old }
  34    { latin-greek iso-ir-19 csISO19LatinGreek }
  35    { DIN_66003 iso-ir-21 de ISO646-DE csISO21German }
  36    { NF_Z_62-010_(1973) iso-ir-25 ISO646-FR1 csISO25French }
  37    { Latin-greek-1 iso-ir-27 csISO27LatinGreek1 }
  38    { ISO_5427 iso-ir-37 csISO5427Cyrillic }
  39    { JIS_C6226-1978 iso-ir-42 csISO42JISC62261978 }
  40    { BS_viewdata iso-ir-47 csISO47BSViewdata }
  41    { INIS iso-ir-49 csISO49INIS }
  42    { INIS-8 iso-ir-50 csISO50INIS8 }
  43    { INIS-cyrillic iso-ir-51 csISO51INISCyrillic }
  44    { ISO_5427:1981 iso-ir-54 ISO5427Cyrillic1981 }
  45    { ISO_5428:1980 iso-ir-55 csISO5428Greek }
  46    { GB_1988-80 iso-ir-57 cn ISO646-CN csISO57GB1988 }
  47    { GB_2312-80 iso-ir-58 chinese csISO58GB231280 }
  48    { NS_4551-1 iso-ir-60 ISO646-NO no csISO60DanishNorwegian
  49      csISO60Norwegian1 }
  50    { NS_4551-2 ISO646-NO2 iso-ir-61 no2 csISO61Norwegian2 }
  51    { NF_Z_62-010 iso-ir-69 ISO646-FR fr csISO69French }
  52    { videotex-suppl iso-ir-70 csISO70VideotexSupp1 }
  53    { PT2 iso-ir-84 ISO646-PT2 csISO84Portuguese2 }
  54    { ES2 iso-ir-85 ISO646-ES2 csISO85Spanish2 }
  55    { MSZ_7795.3 iso-ir-86 ISO646-HU hu csISO86Hungarian }
  56    { JIS_C6226-1983 iso-ir-87 x0208 JIS_X0208-1983 csISO87JISX0208 }
  57    { greek7 iso-ir-88 csISO88Greek7 }
  58    { ASMO_449 ISO_9036 arabic7 iso-ir-89 csISO89ASMO449 }
  59    { iso-ir-90 csISO90 }
  60    { JIS_C6229-1984-a iso-ir-91 jp-ocr-a csISO91JISC62291984a }
  61    { JIS_C6229-1984-b iso-ir-92 ISO646-JP-OCR-B jp-ocr-b
  62      csISO92JISC62991984b }
  63    { JIS_C6229-1984-b-add iso-ir-93 jp-ocr-b-add csISO93JIS62291984badd }
  64    { JIS_C6229-1984-hand iso-ir-94 jp-ocr-hand csISO94JIS62291984hand }
  65    { JIS_C6229-1984-hand-add iso-ir-95 jp-ocr-hand-add
  66      csISO95JIS62291984handadd }
  67    { JIS_C6229-1984-kana iso-ir-96 csISO96JISC62291984kana }
  68    { ISO_2033-1983 iso-ir-98 e13b csISO2033 }
  69    { ANSI_X3.110-1983 iso-ir-99 CSA_T500-1983 NAPLPS csISO99NAPLPS }
  70    { ISO_8859-1:1987 iso-ir-100 ISO_8859-1 ISO-8859-1 latin1 l1 IBM819
  71      CP819 csISOLatin1 }
  72    { ISO_8859-2:1987 iso-ir-101 ISO_8859-2 ISO-8859-2 latin2 l2 csISOLatin2 }
  73    { T.61-7bit iso-ir-102 csISO102T617bit }
  74    { T.61-8bit T.61 iso-ir-103 csISO103T618bit }
  75    { ISO_8859-3:1988 iso-ir-109 ISO_8859-3 ISO-8859-3 latin3 l3 csISOLatin3 }
  76    { ISO_8859-4:1988 iso-ir-110 ISO_8859-4 ISO-8859-4 latin4 l4 csISOLatin4 }
  77    { ECMA-cyrillic iso-ir-111 KOI8-E csISO111ECMACyrillic }
  78    { CSA_Z243.4-1985-1 iso-ir-121 ISO646-CA csa7-1 ca csISO121Canadian1 }
  79    { CSA_Z243.4-1985-2 iso-ir-122 ISO646-CA2 csa7-2 csISO122Canadian2 }
  80    { CSA_Z243.4-1985-gr iso-ir-123 csISO123CSAZ24341985gr }
  81    { ISO_8859-6:1987 iso-ir-127 ISO_8859-6 ISO-8859-6 ECMA-114 ASMO-708
  82      arabic csISOLatinArabic }
  83    { ISO_8859-6-E csISO88596E ISO-8859-6-E }
  84    { ISO_8859-6-I csISO88596I ISO-8859-6-I }
  85    { ISO_8859-7:1987 iso-ir-126 ISO_8859-7 ISO-8859-7 ELOT_928 ECMA-118
  86      greek greek8 csISOLatinGreek }
  87    { T.101-G2 iso-ir-128 csISO128T101G2 }
  88    { ISO_8859-8:1988 iso-ir-138 ISO_8859-8 ISO-8859-8 hebrew
  89      csISOLatinHebrew }
  90    { ISO_8859-8-E csISO88598E ISO-8859-8-E }
  91    { ISO_8859-8-I csISO88598I ISO-8859-8-I }
  92    { CSN_369103 iso-ir-139 csISO139CSN369103 }
  93    { JUS_I.B1.002 iso-ir-141 ISO646-YU js yu csISO141JUSIB1002 }
  94    { ISO_6937-2-add iso-ir-142 csISOTextComm }
  95    { IEC_P27-1 iso-ir-143 csISO143IECP271 }
  96    { ISO_8859-5:1988 iso-ir-144 ISO_8859-5 ISO-8859-5 cyrillic
  97      csISOLatinCyrillic }
  98    { JUS_I.B1.003-serb iso-ir-146 serbian csISO146Serbian }
  99    { JUS_I.B1.003-mac macedonian iso-ir-147 csISO147Macedonian }
 100    { ISO_8859-9:1989 iso-ir-148 ISO_8859-9 ISO-8859-9 latin5 l5 csISOLatin5 }
 101    { greek-ccitt iso-ir-150 csISO150 csISO150GreekCCITT }
 102    { NC_NC00-10:81 cuba iso-ir-151 ISO646-CU csISO151Cuba }
 103    { ISO_6937-2-25 iso-ir-152 csISO6937Add }
 104    { GOST_19768-74 ST_SEV_358-88 iso-ir-153 csISO153GOST1976874 }
 105    { ISO_8859-supp iso-ir-154 latin1-2-5 csISO8859Supp }
 106    { ISO_10367-box iso-ir-155 csISO10367Box }
 107    { ISO-8859-10 iso-ir-157 l6 ISO_8859-10:1992 csISOLatin6 latin6 }
 108    { latin-lap lap iso-ir-158 csISO158Lap }
 109    { JIS_X0212-1990 x0212 iso-ir-159 csISO159JISX02121990 }
 110    { DS_2089 DS2089 ISO646-DK dk csISO646Danish }
 111    { us-dk csUSDK }
 112    { dk-us csDKUS }
 113    { JIS_X0201 X0201 csHalfWidthKatakana }
 114    { KSC5636 ISO646-KR csKSC5636 }
 115    { ISO-10646-UCS-2 csUnicode }
 116    { ISO-10646-UCS-4 csUCS4 }
 117    { DEC-MCS dec csDECMCS }
 118    { hp-roman8 roman8 r8 csHPRoman8 }
 119    { macintosh mac csMacintosh }
 120    { IBM037 cp037 ebcdic-cp-us ebcdic-cp-ca ebcdic-cp-wt ebcdic-cp-nl
 121      csIBM037 }
 122    { IBM038 EBCDIC-INT cp038 csIBM038 }
 123    { IBM273 CP273 csIBM273 }
 124    { IBM274 EBCDIC-BE CP274 csIBM274 }
 125    { IBM275 EBCDIC-BR cp275 csIBM275 }
 126    { IBM277 EBCDIC-CP-DK EBCDIC-CP-NO csIBM277 }
 127    { IBM278 CP278 ebcdic-cp-fi ebcdic-cp-se csIBM278 }
 128    { IBM280 CP280 ebcdic-cp-it csIBM280 }
 129    { IBM281 EBCDIC-JP-E cp281 csIBM281 }
 130    { IBM284 CP284 ebcdic-cp-es csIBM284 }
 131    { IBM285 CP285 ebcdic-cp-gb csIBM285 }
 132    { IBM290 cp290 EBCDIC-JP-kana csIBM290 }
 133    { IBM297 cp297 ebcdic-cp-fr csIBM297 }
 134    { IBM420 cp420 ebcdic-cp-ar1 csIBM420 }
 135    { IBM423 cp423 ebcdic-cp-gr csIBM423 }
 136    { IBM424 cp424 ebcdic-cp-he csIBM424 }
 137    { IBM437 cp437 437 csPC8CodePage437 }
 138    { IBM500 CP500 ebcdic-cp-be ebcdic-cp-ch csIBM500 }
 139    { IBM775 cp775 csPC775Baltic }
 140    { IBM850 cp850 850 csPC850Multilingual }
 141    { IBM851 cp851 851 csIBM851 }
 142    { IBM852 cp852 852 csPCp852 }
 143    { IBM855 cp855 855 csIBM855 }
 144    { IBM857 cp857 857 csIBM857 }
 145    { IBM860 cp860 860 csIBM860 }
 146    { IBM861 cp861 861 cp-is csIBM861 }
 147    { IBM862 cp862 862 csPC862LatinHebrew }
 148    { IBM863 cp863 863 csIBM863 }
 149    { IBM864 cp864 csIBM864 }
 150    { IBM865 cp865 865 csIBM865 }
 151    { IBM866 cp866 866 csIBM866 }
 152    { IBM868 CP868 cp-ar csIBM868 }
 153    { IBM869 cp869 869 cp-gr csIBM869 }
 154    { IBM870 CP870 ebcdic-cp-roece ebcdic-cp-yu csIBM870 }
 155    { IBM871 CP871 ebcdic-cp-is csIBM871 }
 156    { IBM880 cp880 EBCDIC-Cyrillic csIBM880 }
 157    { IBM891 cp891 csIBM891 }
 158    { IBM903 cp903 csIBM903 }
 159    { IBM904 cp904 904 csIBBM904 }
 160    { IBM905 CP905 ebcdic-cp-tr csIBM905 }
 161    { IBM918 CP918 ebcdic-cp-ar2 csIBM918 }
 162    { IBM1026 CP1026 csIBM1026 }
 163    { EBCDIC-AT-DE csIBMEBCDICATDE }
 164    { EBCDIC-AT-DE-A csEBCDICATDEA }
 165    { EBCDIC-CA-FR csEBCDICCAFR }
 166    { EBCDIC-DK-NO csEBCDICDKNO }
 167    { EBCDIC-DK-NO-A csEBCDICDKNOA }
 168    { EBCDIC-FI-SE csEBCDICFISE }
 169    { EBCDIC-FI-SE-A csEBCDICFISEA }
 170    { EBCDIC-FR csEBCDICFR }
 171    { EBCDIC-IT csEBCDICIT }
 172    { EBCDIC-PT csEBCDICPT }
 173    { EBCDIC-ES csEBCDICES }
 174    { EBCDIC-ES-A csEBCDICESA }
 175    { EBCDIC-ES-S csEBCDICESS }
 176    { EBCDIC-UK csEBCDICUK }
 177    { EBCDIC-US csEBCDICUS }
 178    { UNKNOWN-8BIT csUnknown8BiT }
 179    { MNEMONIC csMnemonic }
 180    { MNEM csMnem }
 181    { VISCII csVISCII }
 182    { VIQR csVIQR }
 183    { KOI8-R csKOI8R }
 184    { IBM00858 CCSID00858 CP00858 PC-Multilingual-850+euro }
 185    { IBM00924 CCSID00924 CP00924 ebcdic-Latin9--euro }
 186    { IBM01140 CCSID01140 CP01140 ebcdic-us-37+euro }
 187    { IBM01141 CCSID01141 CP01141 ebcdic-de-273+euro }
 188    { IBM01142 CCSID01142 CP01142 ebcdic-dk-277+euro ebcdic-no-277+euro }
 189    { IBM01143 CCSID01143 CP01143 ebcdic-fi-278+euro ebcdic-se-278+euro }
 190    { IBM01144 CCSID01144 CP01144 ebcdic-it-280+euro }
 191    { IBM01145 CCSID01145 CP01145 ebcdic-es-284+euro }
 192    { IBM01146 CCSID01146 CP01146 ebcdic-gb-285+euro }
 193    { IBM01147 CCSID01147 CP01147 ebcdic-fr-297+euro }
 194    { IBM01148 CCSID01148 CP01148 ebcdic-international-500+euro }
 195    { IBM01149 CCSID01149 CP01149 ebcdic-is-871+euro }
 196    { IBM1047 IBM-1047 }
 197    { PTCP154 csPTCP154 PT154 CP154 Cyrillic-Asian }
 198    { Amiga-1251 Ami1251 Amiga1251 Ami-1251 }
 199    { UNICODE-1-1 csUnicode11 }
 200    { CESU-8 csCESU-8 }
 201    { BOCU-1 csBOCU-1 }
 202    { UNICODE-1-1-UTF-7 csUnicode11UTF7 }
 203    { ISO-8859-14 iso-ir-199 ISO_8859-14:1998 ISO_8859-14 latin8 iso-celtic
 204      l8 }
 205    { ISO-8859-15 ISO_8859-15 Latin-9 }
 206    { ISO-8859-16 iso-ir-226 ISO_8859-16:2001 ISO_8859-16 latin10 l10 }
 207    { GBK CP936 MS936 windows-936 }
 208    { JIS_Encoding csJISEncoding }
 209    { Shift_JIS MS_Kanji csShiftJIS ShiftJIS Shift-JIS }
 210    { Extended_UNIX_Code_Packed_Format_for_Japanese csEUCPkdFmtJapanese
 211      EUC-JP }
 212    { Extended_UNIX_Code_Fixed_Width_for_Japanese csEUCFixWidJapanese }
 213    { ISO-10646-UCS-Basic csUnicodeASCII }
 214    { ISO-10646-Unicode-Latin1 csUnicodeLatin1 ISO-10646 }
 215    { ISO-Unicode-IBM-1261 csUnicodeIBM1261 }
 216    { ISO-Unicode-IBM-1268 csUnicodeIBM1268 }
 217    { ISO-Unicode-IBM-1276 csUnicodeIBM1276 }
 218    { ISO-Unicode-IBM-1264 csUnicodeIBM1264 }
 219    { ISO-Unicode-IBM-1265 csUnicodeIBM1265 }
 220    { ISO-8859-1-Windows-3.0-Latin-1 csWindows30Latin1 }
 221    { ISO-8859-1-Windows-3.1-Latin-1 csWindows31Latin1 }
 222    { ISO-8859-2-Windows-Latin-2 csWindows31Latin2 }
 223    { ISO-8859-9-Windows-Latin-5 csWindows31Latin5 }
 224    { Adobe-Standard-Encoding csAdobeStandardEncoding }
 225    { Ventura-US csVenturaUS }
 226    { Ventura-International csVenturaInternational }
 227    { PC8-Danish-Norwegian csPC8DanishNorwegian }
 228    { PC8-Turkish csPC8Turkish }
 229    { IBM-Symbols csIBMSymbols }
 230    { IBM-Thai csIBMThai }
 231    { HP-Legal csHPLegal }
 232    { HP-Pi-font csHPPiFont }
 233    { HP-Math8 csHPMath8 }
 234    { Adobe-Symbol-Encoding csHPPSMath }
 235    { HP-DeskTop csHPDesktop }
 236    { Ventura-Math csVenturaMath }
 237    { Microsoft-Publishing csMicrosoftPublishing }
 238    { Windows-31J csWindows31J }
 239    { GB2312 csGB2312 }
 240    { Big5 csBig5 }
 241}
 242
 243set encoding_groups {
 244    {"" ""
 245        {"Unicode" UTF-8}
 246        {"Western" ISO-8859-1}}
 247    {we "West European"
 248        {"Western" ISO-8859-15 CP-437 CP-850 MacRoman CP-1252 Windows-1252}
 249        {"Celtic" ISO-8859-14}
 250        {"Greek" ISO-8859-14 ISO-8859-7 CP-737 CP-869 MacGreek CP-1253 Windows-1253}
 251        {"Icelandic" MacIceland MacIcelandic CP-861}
 252        {"Nordic" ISO-8859-10 CP-865}
 253        {"Portuguese" CP-860}
 254        {"South European" ISO-8859-3}}
 255    {ee "East European"
 256        {"Baltic" CP-775 ISO-8859-4 ISO-8859-13 CP-1257 Windows-1257}
 257        {"Central European" CP-852 ISO-8859-2 MacCE CP-1250 Windows-1250}
 258        {"Croatian" MacCroatian}
 259        {"Cyrillic" CP-855 ISO-8859-5 ISO-IR-111 KOI8-R MacCyrillic CP-1251 Windows-1251}
 260        {"Russian" CP-866}
 261        {"Ukrainian" KOI8-U MacUkraine MacUkrainian}
 262        {"Romanian" ISO-8859-16 MacRomania MacRomanian}}
 263    {ea "East Asian"
 264        {"Generic" ISO-2022}
 265        {"Chinese Simplified" GB2312 GB1988 GB12345 GB2312-RAW GBK EUC-CN GB18030 HZ ISO-2022-CN}
 266        {"Chinese Traditional" Big5 Big5-HKSCS EUC-TW CP-950}
 267        {"Japanese" EUC-JP ISO-2022-JP Shift-JIS JIS-0212 JIS-0208 JIS-0201 CP-932 MacJapan}
 268        {"Korean" EUC-KR UHC JOHAB ISO-2022-KR CP-949 KSC5601}}
 269    {sa "SE & SW Asian"
 270        {"Armenian" ARMSCII-8}
 271        {"Georgian" GEOSTD8}
 272        {"Thai" TIS-620 ISO-8859-11 CP-874 Windows-874 MacThai}
 273        {"Turkish" CP-857 CP857 ISO-8859-9 MacTurkish CP-1254 Windows-1254}
 274        {"Vietnamese" TCVN VISCII VPS CP-1258 Windows-1258}
 275        {"Hindi" MacDevanagari}
 276        {"Gujarati" MacGujarati}
 277        {"Gurmukhi" MacGurmukhi}}
 278    {me "Middle Eastern"
 279        {"Arabic" ISO-8859-6 Windows-1256 CP-1256 CP-864 MacArabic}
 280        {"Farsi" MacFarsi}
 281        {"Hebrew" ISO-8859-8-I Windows-1255 CP-1255 ISO-8859-8 CP-862 MacHebrew}}
 282    {mi "Misc"
 283        {"7-bit" ASCII}
 284        {"16-bit" Unicode}
 285        {"Legacy" CP-863 EBCDIC}
 286        {"Symbol" Symbol Dingbats MacDingbats MacCentEuro}}
 287}
 288
 289proc build_encoding_table {} {
 290        global encoding_aliases encoding_lookup_table
 291
 292        # Prepare the lookup list; cannot use lsort -nocase because
 293        # of compatibility issues with older Tcl (e.g. in msysgit)
 294        set names [list]
 295        foreach item [encoding names] {
 296                lappend names [list [string tolower $item] $item]
 297        }
 298        set names [lsort -ascii -index 0 $names]
 299        # neither can we use lsearch -index
 300        set lnames [list]
 301        foreach item $names {
 302                lappend lnames [lindex $item 0]
 303        }
 304
 305        foreach grp $encoding_aliases {
 306                set target {}
 307                foreach item $grp {
 308                        set i [lsearch -sorted -ascii $lnames \
 309                                        [string tolower $item]]
 310                        if {$i >= 0} {
 311                                set target [lindex $names $i 1]
 312                                break
 313                        }
 314                }
 315                if {$target eq {}} continue
 316                foreach item $grp {
 317                        set encoding_lookup_table([string tolower $item]) $target
 318                }
 319        }
 320
 321        foreach item $names {
 322                set encoding_lookup_table([lindex $item 0]) [lindex $item 1]
 323        }
 324}
 325
 326proc tcl_encoding {enc} {
 327        global encoding_lookup_table
 328        if {$enc eq {}} {
 329                return {}
 330        }
 331        if {![info exists encoding_lookup_table]} {
 332                build_encoding_table
 333        }
 334        set enc [string tolower $enc]
 335        if {![info exists encoding_lookup_table($enc)]} {
 336                # look for "isonnn" instead of "iso-nnn" or "iso_nnn"
 337                if {[regsub {^(iso|cp|ibm|jis)[-_]} $enc {\1} encx]} {
 338                        set enc $encx
 339                }
 340        }
 341        if {[info exists encoding_lookup_table($enc)]} {
 342                return $encoding_lookup_table($enc)
 343        } else {
 344                return {}
 345        }
 346}
 347
 348proc force_path_encoding {path enc} {
 349        global path_encoding_overrides last_encoding_override
 350
 351        set enc [tcl_encoding $enc]
 352        if {$enc eq {}} {
 353                catch { unset last_encoding_override }
 354                catch { unset path_encoding_overrides($path) }
 355        } else {
 356                set last_encoding_override $enc
 357                if {$path ne {}} {
 358                        set path_encoding_overrides($path) $enc
 359                }
 360        }
 361}
 362
 363proc get_path_encoding {path} {
 364        global path_encoding_overrides last_encoding_override
 365
 366        if {[info exists last_encoding_override]} {
 367                set tcl_enc $last_encoding_override
 368        } else {
 369                set tcl_enc [tcl_encoding [get_config gui.encoding]]
 370        }
 371        if {$tcl_enc eq {}} {
 372                set tcl_enc [encoding system]
 373        }
 374        if {$path ne {}} {
 375                if {[info exists path_encoding_overrides($path)]} {
 376                        set enc2 $path_encoding_overrides($path)
 377                } else {
 378                        set enc2 [tcl_encoding [gitattr $path encoding $tcl_enc]]
 379                }
 380                if {$enc2 ne {}} {
 381                        set tcl_enc $enc2
 382                }
 383        }
 384        return $tcl_enc
 385}
 386
 387proc build_encoding_submenu {parent grp cmd} {
 388        global used_encodings
 389
 390        set mid [lindex $grp 0]
 391        set gname [mc [lindex $grp 1]]
 392
 393        set smenu {}
 394        foreach subset [lrange $grp 2 end] {
 395                set name [mc [lindex $subset 0]]
 396
 397                foreach enc [lrange $subset 1 end] {
 398                        set tcl_enc [tcl_encoding $enc]
 399                        if {$tcl_enc eq {}} continue
 400
 401                        if {$smenu eq {}} {
 402                                if {$mid eq {}} {
 403                                        set smenu $parent
 404                                } else {
 405                                        set smenu "$parent.$mid"
 406                                        menu $smenu
 407                                        $parent add cascade \
 408                                                -label $gname \
 409                                                -menu $smenu
 410                                }
 411                        }
 412
 413                        if {$name ne {}} {
 414                                set lbl "$name ($enc)"
 415                        } else {
 416                                set lbl $enc
 417                        }
 418                        $smenu add command \
 419                                -label $lbl \
 420                                -command [concat $cmd [list $tcl_enc]]
 421
 422                        lappend used_encodings $tcl_enc
 423                }
 424        }
 425}
 426
 427proc popup_btn_menu {m b} {
 428        tk_popup $m [winfo pointerx $b] [winfo pointery $b]
 429}
 430
 431proc build_encoding_menu {emenu cmd {nodef 0}} {
 432        $emenu configure -postcommand \
 433                [list do_build_encoding_menu $emenu $cmd $nodef]
 434}
 435
 436proc do_build_encoding_menu {emenu cmd {nodef 0}} {
 437        global used_encodings encoding_groups
 438
 439        $emenu configure -postcommand {}
 440
 441        if {!$nodef} {
 442                $emenu add command \
 443                        -label [mc "Default"] \
 444                        -command [concat $cmd [list {}]]
 445        }
 446        set sysenc [encoding system]
 447        $emenu add command \
 448                -label [mc "System (%s)" $sysenc] \
 449                -command [concat $cmd [list $sysenc]]
 450
 451        # Main encoding tree
 452        set used_encodings [list identity]
 453        $emenu add separator
 454        foreach grp $encoding_groups {
 455                build_encoding_submenu $emenu $grp $cmd
 456        }
 457
 458        # Add unclassified encodings
 459        set unused_grp [list [mc Other]]
 460        foreach enc [encoding names] {
 461                if {[lsearch -exact $used_encodings $enc] < 0} {
 462                        lappend unused_grp $enc
 463                }
 464        }
 465        build_encoding_submenu $emenu [list other [mc Other] $unused_grp] $cmd
 466}