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# configuration option. A nonexisting key is an unset option.
variable PackageConfig [dict create mcfolder {} loadcmd {} changecmd {}\
unknowncmd {} loadedlocales {} loclist {}]
# Records the mapping between source strings and translated strings. The
# dict key is of the form " ", where locale and
# namespace should be themselves dict values and the value is
# the translated string.
variable Msgs [dict create]
# Map of language codes used in Windows registry to those of ISO-639
if {[info sharedlibextension] eq ".dll"} {
variable WinRegToISO639 [dict create {*}{
01 ar 0401 ar_SA 0801 ar_IQ 0c01 ar_EG 1001 ar_LY 1401 ar_DZ
1801 ar_MA 1c01 ar_TN 2001 ar_OM 2401 ar_YE 2801 ar_SY
2c01 ar_JO 3001 ar_LB 3401 ar_KW 3801 ar_AE 3c01 ar_BH
4001 ar_QA
02 bg 0402 bg_BG
03 ca 0403 ca_ES
04 zh 0404 zh_TW 0804 zh_CN 0c04 zh_HK 1004 zh_SG 1404 zh_MO
05 cs 0405 cs_CZ
06 da 0406 da_DK
07 de 0407 de_DE 0807 de_CH 0c07 de_AT 1007 de_LU 1407 de_LI
08 el 0408 el_GR
09 en 0409 en_US 0809 en_GB 0c09 en_AU 1009 en_CA 1409 en_NZ
1809 en_IE 1c09 en_ZA 2009 en_JM 2409 en_GD 2809 en_BZ
2c09 en_TT 3009 en_ZW 3409 en_PH
0a es 040a es_ES 080a es_MX 0c0a es_ES@modern 100a es_GT 140a es_CR
180a es_PA 1c0a es_DO 200a es_VE 240a es_CO 280a es_PE
2c0a es_AR 300a es_EC 340a es_CL 380a es_UY 3c0a es_PY
400a es_BO 440a es_SV 480a es_HN 4c0a es_NI 500a es_PR
0b fi 040b fi_FI
0c fr 040c fr_FR 080c fr_BE 0c0c fr_CA 100c fr_CH 140c fr_LU
180c fr_MC
0d he 040d he_IL
0e hu 040e hu_HU
0f is 040f is_IS
10 it 0410 it_IT 0810 it_CH
11 ja 0411 ja_JP
12 ko 0412 ko_KR
13 nl 0413 nl_NL 0813 nl_BE
14 no 0414 no_NO 0814 nn_NO
15 pl 0415 pl_PL
16 pt 0416 pt_BR 0816 pt_PT
17 rm 0417 rm_CH
18 ro 0418 ro_RO 0818 ro_MO
19 ru 0819 ru_MO
1a hr 041a hr_HR 081a sr_YU 0c1a sr_YU@cyrillic
1b sk 041b sk_SK
1c sq 041c sq_AL
1d sv 041d sv_SE 081d sv_FI
1e th 041e th_TH
1f tr 041f tr_TR
20 ur 0420 ur_PK 0820 ur_IN
21 id 0421 id_ID
22 uk 0422 uk_UA
23 be 0423 be_BY
24 sl 0424 sl_SI
25 et 0425 et_EE
26 lv 0426 lv_LV
27 lt 0427 lt_LT
28 tg 0428 tg_TJ
29 fa 0429 fa_IR
2a vi 042a vi_VN
2b hy 042b hy_AM
2c az 042c az_AZ@latin 082c az_AZ@cyrillic
2d eu
2e wen 042e wen_DE
2f mk 042f mk_MK
30 bnt 0430 bnt_TZ
31 ts 0431 ts_ZA
32 tn
33 ven 0433 ven_ZA
34 xh 0434 xh_ZA
35 zu 0435 zu_ZA
36 af 0436 af_ZA
37 ka 0437 ka_GE
38 fo 0438 fo_FO
39 hi 0439 hi_IN
3a mt 043a mt_MT
3b se 043b se_NO
043c gd_UK 083c ga_IE
3d yi 043d yi_IL
3e ms 043e ms_MY 083e ms_BN
3f kk 043f kk_KZ
40 ky 0440 ky_KG
41 sw 0441 sw_KE
42 tk 0442 tk_TM
43 uz 0443 uz_UZ@latin 0843 uz_UZ@cyrillic
44 tt 0444 tt_RU
45 bn 0445 bn_IN
46 pa 0446 pa_IN
47 gu 0447 gu_IN
48 or 0448 or_IN
49 ta
4a te 044a te_IN
4b kn 044b kn_IN
4c ml 044c ml_IN
4d as 044d as_IN
4e mr 044e mr_IN
4f sa 044f sa_IN
50 mn
51 bo 0451 bo_CN
52 cy 0452 cy_GB
53 km 0453 km_KH
54 lo 0454 lo_LA
55 my 0455 my_MM
56 gl 0456 gl_ES
57 kok 0457 kok_IN
58 mni 0458 mni_IN
59 sd
5a syr 045a syr_TR
5b si 045b si_LK
5c chr 045c chr_US
5d iu 045d iu_CA
5e am 045e am_ET
5f ber 045f ber_MA
60 ks 0460 ks_PK 0860 ks_IN
61 ne 0461 ne_NP 0861 ne_IN
62 fy 0462 fy_NL
63 ps
64 tl 0464 tl_PH
65 div 0465 div_MV
66 bin 0466 bin_NG
67 ful 0467 ful_NG
68 ha 0468 ha_NG
69 nic 0469 nic_NG
6a yo 046a yo_NG
70 ibo 0470 ibo_NG
71 kau 0471 kau_NG
72 om 0472 om_ET
73 ti 0473 ti_ET
74 gn 0474 gn_PY
75 cpe 0475 cpe_US
76 la 0476 la_VA
77 so 0477 so_SO
78 sit 0478 sit_CN
79 pap 0479 pap_AN
}]
}
}
# msgcat::mc --
#
# Find the translation for the given string based on the current
# locale setting. Check the local namespace first, then look in each
# parent namespace until the source is found. If additional args are
# specified, use the format command to work them into the traslated
# string.
# If no catalog item is found, mcunknown is called in the caller frame
# and its result is returned.
#
# Arguments:
# src The string to translate.
# args Args to pass to the format command
#
# Results:
# Returns the translated string. Propagates errors thrown by the
# format command.
proc msgcat::mc {src args} {
# this may be replaced by:
# return [mcget -namespace [uplevel 1 [list ::namespace current]] --\
# $src {*}$args]
# Check for the src in each namespace starting from the local and
# ending in the global.
variable Msgs
variable Loclist
set ns [uplevel 1 [list ::namespace current]]
set loclist [PackagePreferences $ns]
set nscur $ns
while {$nscur != ""} {
foreach loc $loclist {
if {[dict exists $Msgs $nscur $loc $src]} {
return [DefaultUnknown "" [dict get $Msgs $nscur $loc $src]\
{*}$args]
}
}
set nscur [namespace parent $nscur]
}
# call package local or default unknown command
set args [linsert $args 0 [lindex $loclist 0] $src]
switch -exact -- [Invoke unknowncmd $args $ns result 1] {
0 { return [uplevel 1 [linsert $args 0 [namespace origin mcunknown]]] }
1 { return [DefaultUnknown {*}$args] }
default { return $result }
}
}
# msgcat::mcexists --
#
# Check if a catalog item is set or if mc would invoke mcunknown.
#
# Arguments:
# -exactnamespace Only check the exact namespace and no
# parent namespaces
# -exactlocale Only check the exact locale and not all members
# of the preferences list
# src Message catalog key
#
# Results:
# true if an adequate catalog key was found
proc msgcat::mcexists {args} {
variable Msgs
variable Loclist
variable PackageConfig
set ns [uplevel 1 [list ::namespace current]]
set loclist [PackagePreferences $ns]
while {[llength $args] != 1} {
set args [lassign $args option]
switch -glob -- $option {
-exactnamespace { set exactnamespace 1 }
-exactlocale { set loclist [lrange $loclist 0 0] }
-* { return -code error "unknown option \"$option\"" }
default {
return -code error "wrong # args: should be\
\"[lindex [info level 0] 0] ?-exactnamespace?\
?-exactlocale? src\""
}
}
}
set src [lindex $args 0]
while {$ns ne ""} {
foreach loc $loclist {
if {[dict exists $Msgs $ns $loc $src]} {
return 1
}
}
if {[info exists exactnamespace]} {return 0}
set ns [namespace parent $ns]
}
return 0
}
# msgcat::mclocale --
#
# Query or set the current locale.
#
# Arguments:
# newLocale (Optional) The new locale string. Locale strings
# should be composed of one or more sublocale parts
# separated by underscores (e.g. en_US).
#
# Results:
# Returns the normalized set locale.
proc msgcat::mclocale {args} {
variable Loclist
variable LoadedLocales
set len [llength $args]
if {$len > 1} {
return -code error "wrong # args: should be\
\"[lindex [info level 0] 0] ?newLocale?\""
}
if {$len == 1} {
set newLocale [string tolower [lindex $args 0]]
if {$newLocale ne [file tail $newLocale]} {
return -code error "invalid newLocale value \"$newLocale\":\
could be path to unsafe code."
}
if {[lindex $Loclist 0] ne $newLocale} {
set Loclist [GetPreferences $newLocale]
# locale not loaded jet
LoadAll $Loclist
# Invoke callback
Invoke changecmd $Loclist
}
}
return [lindex $Loclist 0]
}
# msgcat::GetPreferences --
#
# Get list of locales from a locale.
# The first element is always the lowercase locale.
# Other elements have one component separated by "_" less.
# Multiple "_" are seen as one separator: de__ch_spec de__ch de {}
#
# Arguments:
# Locale.
#
# Results:
# Locale list
proc msgcat::GetPreferences {locale} {
set locale [string tolower $locale]
set loclist [list $locale]
while {-1 !=[set pos [string last "_" $locale]]} {
set locale [string range $locale 0 $pos-1]
if { "_" ne [string index $locale end] } {
lappend loclist $locale
}
}
if {"" ne [lindex $loclist end]} {
lappend loclist {}
}
return $loclist
}
# msgcat::mcpreferences --
#
# Fetch the list of locales used to look up strings, ordered from
# most preferred to least preferred.
#
# Arguments:
# None.
#
# Results:
# Returns an ordered list of the locales preferred by the user.
proc msgcat::mcpreferences {} {
variable Loclist
return $Loclist
}
# msgcat::mcloadedlocales --
#
# Get or change the list of currently loaded default locales
#
# The following subcommands are available:
# loaded
# Get the current list of loaded locales
# clear
# Remove all loaded locales not present in mcpreferences.
#
# Arguments:
# subcommand One of loaded or clear
#
# Results:
# Empty string, if not stated differently for the subcommand
proc msgcat::mcloadedlocales {subcommand} {
variable Loclist
variable LoadedLocales
variable Msgs
variable PackageConfig
switch -exact -- $subcommand {
clear {
# Remove all locales not contained in Loclist
# skip any packages with package locale
set LoadedLocales $Loclist
foreach ns [dict keys $Msgs] {
if {![dict exists $PackageConfig loclist $ns]} {
foreach locale [dict keys [dict get $Msgs $ns]] {
if {$locale ni $Loclist} {
dict unset Msgs $ns $locale
}
}
}
}
}
loaded { return $LoadedLocales }
default {
return -code error "unknown subcommand \"$subcommand\": must be\
clear, or loaded"
}
}
return
}
# msgcat::mcpackagelocale --
#
# Get or change the package locale of the calling package.
#
# The following subcommands are available:
# set
# Set a package locale.
# This may load message catalog files and may clear message catalog
# items, if the former locale was the default locale.
# Returns the normalized set locale.
# The default locale is taken, if locale is not given.
# get
# Get the locale valid for this package.
# isset
# Returns true, if a package locale is set
# unset
# Unset the package locale and activate the default locale.
# This loads message catalog file which where missing in the package
# locale.
# preferences
# Return locale preference list valid for the package.
# loaded
# Return loaded locale list valid for the current package.
# clear
# If the current package has a package locale, remove all package
# locales not containes in package mcpreferences.
# It is an error to call this without a package locale set.
#
# The subcommands get, preferences and loaded return the corresponding
# default data, if no package locale is set.
#
# Arguments:
# subcommand see list above
# locale package locale (only set subcommand)
#
# Results:
# Empty string, if not stated differently for the subcommand
proc msgcat::mcpackagelocale {subcommand {locale ""}} {
# todo: implement using an ensemble
variable Loclist
variable LoadedLocales
variable Msgs
variable PackageConfig
# Check option
# check if required item is exactly provided
if {[llength [info level 0]] == 2} {
# locale not given
unset locale
} else {
# locale given
if {$subcommand in
{"get" "isset" "unset" "preferences" "loaded" "clear"} } {
return -code error "wrong # args: should be\
\"[lrange [info level 0] 0 1]\""
}
set locale [string tolower $locale]
}
set ns [uplevel 1 {::namespace current}]
switch -exact -- $subcommand {
get { return [lindex [PackagePreferences $ns] 0] }
preferences { return [PackagePreferences $ns] }
loaded { return [PackageLocales $ns] }
present { return [expr {$locale in [PackageLocales $ns]} ]}
isset { return [dict exists $PackageConfig loclist $ns] }
set { # set a package locale or add a package locale
# Copy the default locale if no package locale set so far
if {![dict exists $PackageConfig loclist $ns]} {
dict set PackageConfig loclist $ns $Loclist
dict set PackageConfig loadedlocales $ns $LoadedLocales
}
# Check if changed
set loclist [dict get $PackageConfig loclist $ns]
if {! [info exists locale] || $locale eq [lindex $loclist 0] } {
return [lindex $loclist 0]
}
# Change loclist
set loclist [GetPreferences $locale]
set locale [lindex $loclist 0]
dict set PackageConfig loclist $ns $loclist
# load eventual missing locales
set loadedLocales [dict get $PackageConfig loadedlocales $ns]
if {$locale in $loadedLocales} { return $locale }
set loadLocales [ListComplement $loadedLocales $loclist]
dict set PackageConfig loadedlocales $ns\
[concat $loadedLocales $loadLocales]
Load $ns $loadLocales
return $locale
}
clear { # Remove all locales not contained in Loclist
if {![dict exists $PackageConfig loclist $ns]} {
return -code error "clear only when package locale set"
}
set loclist [dict get $PackageConfig loclist $ns]
dict set PackageConfig loadedlocales $ns $loclist
if {[dict exists $Msgs $ns]} {
foreach locale [dict keys [dict get $Msgs $ns]] {
if {$locale ni $loclist} {
dict unset Msgs $ns $locale
}
}
}
}
unset { # unset package locale and restore default locales
if { ![dict exists $PackageConfig loclist $ns] } { return }
# unset package locale
set loadLocales [ListComplement\
[dict get $PackageConfig loadedlocales $ns] $LoadedLocales]
dict unset PackageConfig loadedlocales $ns
dict unset PackageConfig loclist $ns
# unset keys not in global loaded locales
if {[dict exists $Msgs $ns]} {
foreach locale [dict keys [dict get $Msgs $ns]] {
if {$locale ni $LoadedLocales} {
dict unset Msgs $ns $locale
}
}
}
# Add missing locales
Load $ns $loadLocales
}
default {
return -code error "unknown subcommand \"$subcommand\": must be\
clear, get, isset, loaded, present, set, or unset"
}
}
return
}
# msgcat::mcforgetpackage --
#
# Remove any data of the calling package from msgcat
#
proc msgcat::mcforgetpackage {} {
# todo: this may be implemented using an ensemble
variable PackageConfig
variable Msgs
set ns [uplevel 1 {::namespace current}]
# Remove MC items
dict unset Msgs $ns
# Remove config items
foreach key [dict keys $PackageConfig] {
dict unset PackageConfig $key $ns
}
return
}
# msgcat::mcpackageconfig --
#
# Get or modify the per caller namespace (e.g. packages) config options.
#
# Available subcommands are:
#
# get get the current value or an error if not set.
# isset return true, if the option is set
# set set the value (see also distinct option).
# Returns the number of loaded message files.
# unset Clear option. return "".
#
# Available options are:
#
# mcfolder
# The message catalog folder of the package.
# This is automatically set by mcload.
# If the value is changed using the set subcommand, an evntual
# loadcmd is invoked and all message files of the package locale are
# loaded.
#
# loadcmd
# The command gets executed before a message file would be
# sourced for this module.
# The command is invoked with the expanded locale list to load.
# The command is not invoked if the registering package namespace
# is not present.
# This callback might also be used as an alternative to message
# files.
# If the value is changed using the set subcommand, the callback is
# directly invoked with the current file locale list. No file load is
# executed.
#
# changecmd
# The command is invoked, after an executed locale change.
# Appended argument is expanded mcpreferences.
#
# unknowncmd
# Use a package locale mcunknown procedure instead the global one.
# The appended arguments are identical to mcunknown.
# A default unknown handler is used if set to the empty string.
# This consists in returning the key if no arguments are given.
# With given arguments, format is used to process the arguments.
#
# Arguments:
# subcommand Operation on the package
# option The package option to get or set.
# ?value? Eventual value for the subcommand
#
# Results:
# Depends on the subcommand and option and is described there
proc msgcat::mcpackageconfig {subcommand option {value ""}} {
variable PackageConfig
# get namespace
set ns [uplevel 1 {::namespace current}]
if {$option ni {"mcfolder" "loadcmd" "changecmd" "unknowncmd"}} {
return -code error "bad option \"$option\": must be mcfolder, loadcmd,\
changecmd, or unknowncmd"
}
# check if value argument is exactly provided
if {[llength [info level 0]] == 4 } {
# value provided
if {$subcommand in {"get" "isset" "unset"}} {
return -code error "wrong # args: should be\
\"[lrange [info level 0] 0 2] value\""
}
} elseif {$subcommand eq "set"} {
return -code error\
"wrong # args: should be \"[lrange [info level 0] 0 2]\""
}
# Execute subcommands
switch -exact -- $subcommand {
get { # Operation get return current value
if {![dict exists $PackageConfig $option $ns]} {
return -code error "package option \"$option\" not set"
}
return [dict get $PackageConfig $option $ns]
}
isset { return [dict exists $PackageConfig $option $ns] }
unset { dict unset PackageConfig $option $ns }
set { # Set option
if {$option eq "mcfolder"} {
set value [file normalize $value]
}
# Check if changed
if { [dict exists $PackageConfig $option $ns]
&& $value eq [dict get $PackageConfig $option $ns] } {
return 0
}
# set new value
dict set PackageConfig $option $ns $value
# Reload pending message catalogs
switch -exact -- $option {
mcfolder { return [Load $ns [PackageLocales $ns]] }
loadcmd { return [Load $ns [PackageLocales $ns] 1] }
}
return 0
}
default {
return -code error "unknown subcommand \"$subcommand\":\
must be get, isset, set, or unset"
}
}
return
}
# msgcat::PackagePreferences --
#
# Return eventual present package preferences or the default list if not
# present.
#
# Arguments:
# ns Package namespace
#
# Results:
# locale list
proc msgcat::PackagePreferences {ns} {
variable PackageConfig
if {[dict exists $PackageConfig loclist $ns]} {
return [dict get $PackageConfig loclist $ns]
}
variable Loclist
return $Loclist
}
# msgcat::PackageLocales --
#
# Return eventual present package locales or the default list if not
# present.
#
# Arguments:
# ns Package namespace
#
# Results:
# locale list
proc msgcat::PackageLocales {ns} {
variable PackageConfig
if {[dict exists $PackageConfig loadedlocales $ns]} {
return [dict get $PackageConfig loadedlocales $ns]
}
variable LoadedLocales
return $LoadedLocales
}
# msgcat::ListComplement --
#
# Build the complement of two lists.
# Return a list with all elements in list2 but not in list1.
# Optionally return the intersection.
#
# Arguments:
# list1 excluded list
# list2 included list
# inlistname If not "", write in this variable the intersection list
#
# Results:
# list with all elements in list2 but not in list1
proc msgcat::ListComplement {list1 list2 {inlistname ""}} {
if {"" ne $inlistname} {
upvar 1 $inlistname inlist
}
set inlist {}
set outlist {}
foreach item $list2 {
if {$item in $list1} {
lappend inlist $item
} else {
lappend outlist $item
}
}
return $outlist
}
# msgcat::mcload --
#
# Attempt to load message catalogs for each locale in the
# preference list from the specified directory.
#
# Arguments:
# langdir The directory to search.
#
# Results:
# Returns the number of message catalogs that were loaded.
proc msgcat::mcload {langdir} {
return [uplevel 1 [list\
[namespace origin mcpackageconfig] set mcfolder $langdir]]
}
# msgcat::LoadAll --
#
# Load a list of locales for all packages not having a package locale
# list.
#
# Arguments:
# langdir The directory to search.
#
# Results:
# Returns the number of message catalogs that were loaded.
proc msgcat::LoadAll {locales} {
variable PackageConfig
variable LoadedLocales
if {0 == [llength $locales]} { return {} }
# filter jet unloaded locales
set locales [ListComplement $LoadedLocales $locales]
if {0 == [llength $locales]} { return {} }
lappend LoadedLocales {*}$locales
set packages [lsort -unique [concat\
[dict keys [dict get $PackageConfig loadcmd]]\
[dict keys [dict get $PackageConfig mcfolder]]]]
foreach ns $packages {
if {! [dict exists $PackageConfig loclist $ns] } {
Load $ns $locales
}
}
return $locales
}
# msgcat::Load --
#
# Invoke message load callback and load message catalog files.
#
# Arguments:
# ns Namespace (equal package) to load the message catalog.
# locales List of locales to load.
# callbackonly true if only callback should be invoked
#
# Results:
# Returns the number of message catalogs that were loaded.
proc msgcat::Load {ns locales {callbackonly 0}} {
variable FileLocale
variable PackageConfig
variable LoadedLocals
if {0 == [llength $locales]} { return 0 }
# Invoke callback
Invoke loadcmd $locales $ns
if {$callbackonly || ![dict exists $PackageConfig mcfolder $ns]} {
return 0
}
# Invoke file load
set langdir [dict get $PackageConfig mcfolder $ns]
# Save the file locale if we are recursively called
if {[info exists FileLocale]} {
set nestedFileLocale $FileLocale
}
set x 0
foreach p $locales {
if {$p eq {}} {
set p ROOT
}
set langfile [file join $langdir $p.msg]
if {[file exists $langfile]} {
incr x
set FileLocale [string tolower\
[file tail [file rootname $langfile]]]
if {"root" eq $FileLocale} {
set FileLocale ""
}
namespace inscope $ns [list ::source -encoding utf-8 $langfile]
unset FileLocale
}
}
if {[info exists nestedFileLocale]} {
set FileLocale $nestedFileLocale
}
return $x
}
# msgcat::Invoke --
#
# Invoke a set of registered callbacks.
# The callback is only invoked, if its registered namespace exists.
#
# Arguments:
# index Index into PackageConfig to get callback command
# arglist parameters to the callback invocation
# ns (Optional) package to call.
# If not given or empty, check all registered packages.
# resultname Variable to save the callback result of the last called
# callback to. May be set to "" to discard the result.
# failerror (0) Fail on error if true. Otherwise call bgerror.
#
# Results:
# Possible values:
# - 0: no valid command registered
# - 1: registered command was the empty string
# - 2: registered command called, resultname is set
# - 3: registered command failed
# If multiple commands are called, the maximum of all results is returned.
proc msgcat::Invoke {index arglist {ns ""} {resultname ""} {failerror 0}} {
variable PackageConfig
variable Config
if {"" ne $resultname} {
upvar 1 $resultname result
}
if {"" eq $ns} {
set packageList [dict keys [dict get $PackageConfig $index]]
} else {
set packageList [list $ns]
}
set ret 0
foreach ns $packageList {
if {[dict exists $PackageConfig $index $ns] && [namespace exists $ns]} {
set cmd [dict get $PackageConfig $index $ns]
if {"" eq $cmd} {
if {$ret == 0} {set ret 1}
} else {
if {$failerror} {
set result [namespace inscope $ns $cmd {*}$arglist]
set ret 2
} elseif {1 == [catch {
set result [namespace inscope $ns $cmd {*}$arglist]
if {$ret < 2} {set ret 2}
} err derr]} {
after idle [concat [::interp bgerror ""]\
[list $err $derr]]
set ret 3
}
}
}
}
return $ret
}
# msgcat::mcset --
#
# Set the translation for a given string in a specified locale.
#
# Arguments:
# locale The locale to use.
# src The source string.
# dest (Optional) The translated string. If omitted,
# the source string is used.
#
# Results:
# Returns the new locale.
proc msgcat::mcset {locale src {dest ""}} {
variable Msgs
if {[llength [info level 0]] == 3} { ;# dest not specified
set dest $src
}
set ns [uplevel 1 [list ::namespace current]]
set locale [string tolower $locale]
dict set Msgs $ns $locale $src $dest
return $dest
}
# msgcat::mcflset --
#
# Set the translation for a given string in the current file locale.
#
# Arguments:
# src The source string.
# dest (Optional) The translated string. If omitted,
# the source string is used.
#
# Results:
# Returns the new locale.
proc msgcat::mcflset {src {dest ""}} {
variable FileLocale
variable Msgs
if {![info exists FileLocale]} {
return -code error "must only be used inside a message catalog loaded\
with ::msgcat::mcload"
}
return [uplevel 1 [list [namespace origin mcset] $FileLocale $src $dest]]
}
# msgcat::mcmset --
#
# Set the translation for multiple strings in a specified locale.
#
# Arguments:
# locale The locale to use.
# pairs One or more src/dest pairs (must be even length)
#
# Results:
# Returns the number of pairs processed
proc msgcat::mcmset {locale pairs} {
variable Msgs
set length [llength $pairs]
if {$length % 2} {
return -code error "bad translation list:\
should be \"[lindex [info level 0] 0] locale {src dest ...}\""
}
set locale [string tolower $locale]
set ns [uplevel 1 [list ::namespace current]]
foreach {src dest} $pairs {
dict set Msgs $ns $locale $src $dest
}
return [expr {$length / 2}]
}
# msgcat::mcflmset --
#
# Set the translation for multiple strings in the mc file locale.
#
# Arguments:
# pairs One or more src/dest pairs (must be even length)
#
# Results:
# Returns the number of pairs processed
proc msgcat::mcflmset {pairs} {
variable FileLocale
variable Msgs
if {![info exists FileLocale]} {
return -code error "must only be used inside a message catalog loaded\
with ::msgcat::mcload"
}
return [uplevel 1 [list [namespace origin mcmset] $FileLocale $pairs]]
}
# msgcat::mcunknown --
#
# This routine is called by msgcat::mc if a translation cannot
# be found for a string and no unknowncmd is set for the current
# package. This routine is intended to be replaced
# by an application specific routine for error reporting
# purposes. The default behavior is to return the source string.
# If additional args are specified, the format command will be used
# to work them into the traslated string.
#
# Arguments:
# locale The current locale.
# src The string to be translated.
# args Args to pass to the format command
#
# Results:
# Returns the translated value.
proc msgcat::mcunknown {args} {
return [uplevel 1 [list [namespace origin DefaultUnknown] {*}$args]]
}
# msgcat::DefaultUnknown --
#
# This routine is called by msgcat::mc if a translation cannot
# be found for a string in the following circumstances:
# - Default global handler, if mcunknown is not redefined.
# - Per package handler, if the package sets unknowncmd to the empty
# string.
# It returna the source string if the argument list is empty.
# If additional args are specified, the format command will be used
# to work them into the traslated string.
#
# Arguments:
# locale (unused) The current locale.
# src The string to be translated.
# args Args to pass to the format command
#
# Results:
# Returns the translated value.
proc msgcat::DefaultUnknown {locale src args} {
if {[llength $args]} {
return [format $src {*}$args]
} else {
return $src
}
}
# msgcat::mcmax --
#
# Calculates the maximum length of the translated strings of the given
# list.
#
# Arguments:
# args strings to translate.
#
# Results:
# Returns the length of the longest translated string.
proc msgcat::mcmax {args} {
set max 0
foreach string $args {
set translated [uplevel 1 [list [namespace origin mc] $string]]
set len [string length $translated]
if {$len>$max} {
set max $len
}
}
return $max
}
# Convert the locale values stored in environment variables to a form
# suitable for passing to [mclocale]
proc msgcat::ConvertLocale {value} {
# Assume $value is of form: $language[_$territory][.$codeset][@modifier]
# Convert to form: $language[_$territory][_$modifier]
#
# Comment out expanded RE version -- bugs alleged
# regexp -expanded {
# ^ # Match all the way to the beginning
# ([^_.@]*) # Match "lanugage"; ends with _, ., or @
# (_([^.@]*))? # Match (optional) "territory"; starts with _
# ([.]([^@]*))? # Match (optional) "codeset"; starts with .
# (@(.*))? # Match (optional) "modifier"; starts with @
# $ # Match all the way to the end
# } $value -> language _ territory _ codeset _ modifier
if {![regexp {^([^_.@]+)(_([^.@]*))?([.]([^@]*))?(@(.*))?$} $value \
-> language _ territory _ codeset _ modifier]} {
return -code error "invalid locale '$value': empty language part"
}
set ret $language
if {[string length $territory]} {
append ret _$territory
}
if {[string length $modifier]} {
append ret _$modifier
}
return $ret
}
# Initialize the default locale
proc msgcat::Init {} {
global env
#
# set default locale, try to get from environment
#
foreach varName {LC_ALL LC_MESSAGES LANG} {
if {[info exists env($varName)] && ("" ne $env($varName))} {
if {![catch {
mclocale [ConvertLocale $env($varName)]
}]} {
return
}
}
}
#
# On Darwin, fallback to current CFLocale identifier if available.
#
if {[info exists ::tcl::mac::locale] && $::tcl::mac::locale ne ""} {
if {![catch {
mclocale [ConvertLocale $::tcl::mac::locale]
}]} {
return
}
}
#
# The rest of this routine is special processing for Windows or
# Cygwin. All other platforms, get out now.
#
if {([info sharedlibextension] ne ".dll")
|| [catch {package require registry}]} {
mclocale C
return
}
#
# On Windows or Cygwin, try to set locale depending on registry
# settings, or fall back on locale of "C".
#
# On Vista and later:
# HCU/Control Panel/Desktop : PreferredUILanguages is for language packs,
# HCU/Control Pannel/International : localName is the default locale.
#
# They contain the local string as RFC5646, composed of:
# [a-z]{2,3} : language
# -[a-z]{4} : script (optional, translated by table Latn->latin)
# -[a-z]{2}|[0-9]{3} : territory (optional, numerical region codes not used)
# (-.*)* : variant, extension, private use (optional, not used)
# Those are translated to local strings.
# Examples: de-CH -> de_ch, sr-Latn-CS -> sr_cs@latin, es-419 -> es
#
foreach key {{HKEY_CURRENT_USER\Control Panel\Desktop} {HKEY_CURRENT_USER\Control Panel\International}}\
value {PreferredUILanguages localeName} {
if {![catch {registry get $key $value} localeName]
&& [regexp {^([a-z]{2,3})(?:-([a-z]{4}))?(?:-([a-z]{2}))?(?:-.+)?$}\
[string tolower $localeName] match locale script territory]} {
if {"" ne $territory} {
append locale _ $territory
}
set modifierDict [dict create latn latin cyrl cyrillic]
if {[dict exists $modifierDict $script]} {
append locale @ [dict get $modifierDict $script]
}
if {![catch {mclocale [ConvertLocale $locale]}]} {
return
}
}
}
# then check value locale which contains a numerical language ID
if {[catch {
set locale [registry get $key "locale"]
}]} {
mclocale C
return
}
#
# Keep trying to match against smaller and smaller suffixes
# of the registry value, since the latter hexadigits appear
# to determine general language and earlier hexadigits determine
# more precise information, such as territory. For example,
# 0409 - English - United States
# 0809 - English - United Kingdom
# Add more translations to the WinRegToISO639 array above.
#
variable WinRegToISO639
set locale [string tolower $locale]
while {[string length $locale]} {
if {![catch {
mclocale [ConvertLocale [dict get $WinRegToISO639 $locale]]
}]} {
return
}
set locale [string range $locale 1 end]
}
#
# No translation known. Fall back on "C" locale
#
mclocale C
}
msgcat::Init