| 1 | # ---------------------------------------------------------------------- |
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| 2 | # COMPONENT: library - provides access to the XML library |
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| 3 | # |
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| 4 | # These routines make it easy to load the XML description for a |
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| 5 | # series of tool parameters and browse through the results. |
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| 6 | # ====================================================================== |
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| 7 | # AUTHOR: Michael McLennan, Purdue University |
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| 8 | # Copyright (c) 2004-2005 Purdue Research Foundation |
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| 9 | # |
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| 10 | # See the file "license.terms" for information on usage and |
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| 11 | # redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES. |
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| 12 | # ====================================================================== |
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| 13 | package require tdom |
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| 14 | package require Itcl |
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| 15 | |
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| 16 | namespace eval Rappture { |
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| 17 | variable stdlib "" |
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| 18 | } |
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| 19 | |
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| 20 | # ---------------------------------------------------------------------- |
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| 21 | # USAGE: library <file> |
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| 22 | # USAGE: library standard |
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| 23 | # USAGE: library isvalid <object> |
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| 24 | # |
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| 25 | # Used to open a <file> containing an XML description of tool |
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| 26 | # parameters. Loads the file and returns the name of the LibraryObj |
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| 27 | # file that represents it. |
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| 28 | # |
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| 29 | # If you use the word "standard" in place of the file name, this |
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| 30 | # function returns the standard Rappture library object, which |
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| 31 | # contains material definitions. |
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| 32 | # |
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| 33 | # The isvalid operation checks an <object> to see if it is a valid |
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| 34 | # library object. Returns 1 if so, and 0 otherwise. |
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| 35 | # ---------------------------------------------------------------------- |
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| 36 | proc Rappture::library {args} { |
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| 37 | # handle the isvalid operation... |
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| 38 | if {[llength $args] > 1 && [lindex $args 0] == "isvalid"} { |
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| 39 | if {[llength $args] != 2} { |
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| 40 | error "wrong # args: should be \"library isvalid object\"" |
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| 41 | } |
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| 42 | set obj [lindex $args 1] |
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| 43 | if {[catch {$obj isa ::Rappture::LibraryObj} valid] == 0 && $valid} { |
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| 44 | return 1 |
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| 45 | } |
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| 46 | return 0 |
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| 47 | } |
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| 48 | |
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| 49 | if {[llength $args] != 1} { |
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| 50 | error "wrong # args: should be \"library file\" or \"library isvalid object\"" |
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| 51 | } |
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| 52 | set fname [lindex $args 0] |
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| 53 | |
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| 54 | if {$fname == "standard"} { |
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| 55 | variable stdlib |
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| 56 | if {$stdlib != ""} { |
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| 57 | return $stdlib |
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| 58 | } |
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| 59 | set fname [file join $Rappture::installdir lib library.xml] |
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| 60 | |
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| 61 | set fid [::open $fname r] |
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| 62 | set info [read $fid] |
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| 63 | close $fid |
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| 64 | |
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| 65 | set stdlib [Rappture::LibraryObj ::#auto $info] |
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| 66 | return $stdlib |
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| 67 | } |
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| 68 | |
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| 69 | if {[regexp {^<\?[Xx][Mm][Ll]} $fname]} { |
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| 70 | set info $fname |
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| 71 | } else { |
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| 72 | # otherwise, try to open the file and create its LibraryObj |
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| 73 | set fid [::open $fname r] |
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| 74 | set info [read $fid] |
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| 75 | close $fid |
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| 76 | } |
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| 77 | |
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| 78 | set obj [Rappture::LibraryObj ::#auto $info] |
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| 79 | return $obj |
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| 80 | } |
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| 81 | |
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| 82 | # ---------------------------------------------------------------------- |
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| 83 | # USAGE: entities ?-as <fval>? <object> <path> |
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| 84 | # |
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| 85 | # Used to sift through an XML <object> for "entities" within the |
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| 86 | # Rappture description. Entities are things like strings, numbers, |
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| 87 | # etc., which show up in the GUI as controls. |
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| 88 | # |
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| 89 | # Returns a list of all entities found beneath <path>. |
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| 90 | # |
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| 91 | # By default, this method returns the component name "type(id)". |
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| 92 | # This is changed by setting the -as argument to "id" (for name |
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| 93 | # of the tail element), to "type" (for the type of the tail element), |
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| 94 | # to "object" (for an object representing the DOM node referenced by |
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| 95 | # the path. |
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| 96 | # ---------------------------------------------------------------------- |
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| 97 | proc Rappture::entities {args} { |
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| 98 | array set params { |
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| 99 | -as component |
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| 100 | } |
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| 101 | while {[llength $args] > 1} { |
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| 102 | set first [lindex $args 0] |
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| 103 | if {[string index $first 0] == "-"} { |
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| 104 | set choices [array names params] |
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| 105 | if {[lsearch $choices $first] < 0} { |
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| 106 | error "bad option \"$first\": should be [join [lsort $choices] {, }]" |
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| 107 | } |
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| 108 | set params($first) [lindex $args 1] |
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| 109 | set args [lrange $args 2 end] |
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| 110 | } else { |
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| 111 | break |
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| 112 | } |
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| 113 | } |
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| 114 | if {[llength $args] > 2} { |
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| 115 | error "wrong # args: should be \"entities ?-as fval? obj ?path?\"" |
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| 116 | } |
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| 117 | set xmlobj [lindex $args 0] |
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| 118 | set path [lindex $args 1] |
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| 119 | |
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| 120 | set rlist "" |
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| 121 | lappend queue $path |
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| 122 | while {[llength $queue] > 0} { |
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| 123 | set path [lindex $queue 0] |
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| 124 | set queue [lrange $queue 1 end] |
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| 125 | |
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| 126 | foreach cpath [$xmlobj children -as path $path] { |
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| 127 | switch -- [$xmlobj element -as type $cpath] { |
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| 128 | group - phase { |
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| 129 | lappend queue $cpath |
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| 130 | } |
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| 131 | structure { |
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| 132 | # add this to the return list with the right flavor |
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| 133 | if {$params(-as) == "component"} { |
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| 134 | lappend rlist $cpath |
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| 135 | } else { |
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| 136 | lappend rlist [$xmlobj element -as $params(-as) $cpath] |
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| 137 | } |
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| 138 | |
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| 139 | if {[$xmlobj element $cpath.current.parameters] != ""} { |
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| 140 | lappend queue $cpath.current.parameters |
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| 141 | } |
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| 142 | } |
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| 143 | default { |
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| 144 | # add this to the return list with the right flavor |
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| 145 | if {$params(-as) == "component"} { |
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| 146 | lappend rlist $cpath |
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| 147 | } else { |
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| 148 | lappend rlist [$xmlobj element -as $params(-as) $cpath] |
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| 149 | } |
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| 150 | |
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| 151 | # if this element has embedded groups, add them to the queue |
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| 152 | foreach ccpath [$xmlobj children -as path $cpath] { |
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| 153 | set cctype [$xmlobj element -as type $ccpath] |
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| 154 | if {$cctype == "group" || $cctype == "phase"} { |
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| 155 | lappend queue $ccpath |
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| 156 | } |
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| 157 | } |
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| 158 | } |
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| 159 | } |
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| 160 | } |
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| 161 | } |
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| 162 | return $rlist |
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| 163 | } |
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| 164 | |
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| 165 | # ---------------------------------------------------------------------- |
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| 166 | itcl::class Rappture::LibraryObj { |
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| 167 | constructor {info} { # defined below } |
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| 168 | destructor { # defined below } |
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| 169 | |
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| 170 | public method element {args} |
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| 171 | public method parent {args} |
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| 172 | public method children {args} |
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| 173 | public method get {{path ""}} |
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| 174 | public method put {args} |
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| 175 | public method copy {path from args} |
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| 176 | public method remove {{path ""}} |
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| 177 | public method xml {} |
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| 178 | |
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| 179 | public method diff {libobj} |
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| 180 | public proc value {libobj path} |
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| 181 | |
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| 182 | public proc path2list {path} |
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| 183 | protected method find {path} |
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| 184 | protected method node2name {node} |
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| 185 | protected method node2comp {node} |
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| 186 | protected method node2path {node} |
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| 187 | protected method childnodes {node type} |
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| 188 | |
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| 189 | private variable _root 0 ;# non-zero => this obj owns document |
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| 190 | private variable _document "" ;# XML DOM tree |
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| 191 | private variable _node "" ;# node within |
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| 192 | } |
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| 193 | |
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| 194 | # ---------------------------------------------------------------------- |
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| 195 | # CONSTRUCTOR |
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| 196 | # ---------------------------------------------------------------------- |
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| 197 | itcl::body Rappture::LibraryObj::constructor {info} { |
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| 198 | if {[regexp {<?[Xx][Mm][Ll]} $info]} { |
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| 199 | set _root 1 |
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| 200 | set _document [dom parse $info] |
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| 201 | set _node [$_document documentElement] |
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| 202 | } elseif {[regexp {^domNode} $info]} { |
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| 203 | set _root 0 |
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| 204 | set _document [$info ownerDocument] |
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| 205 | set _node $info |
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| 206 | } else { |
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| 207 | error "bad info: should be XML text or DOM node" |
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| 208 | } |
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| 209 | } |
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| 210 | |
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| 211 | # ---------------------------------------------------------------------- |
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| 212 | # DESTRUCTOR |
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| 213 | # ---------------------------------------------------------------------- |
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| 214 | itcl::body Rappture::LibraryObj::destructor {} { |
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| 215 | if {$_root && $_document != ""} { |
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| 216 | $_document delete |
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| 217 | } |
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| 218 | } |
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| 219 | |
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| 220 | # ---------------------------------------------------------------------- |
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| 221 | # USAGE: element ?-as <fval>? ?<path>? |
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| 222 | # |
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| 223 | # Clients use this to query a particular element within the entire |
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| 224 | # data structure. The path is a string of the form |
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| 225 | # "structure.box(source).corner". This example represents the tag |
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| 226 | # <corner> within a tag <box id="source"> within a tag <structure>, |
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| 227 | # which must be found at the top level within this document. |
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| 228 | # |
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| 229 | # By default, this method returns the component name "type(id)". |
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| 230 | # This is changed by setting the -as argument to "id" (for name |
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| 231 | # of the tail element), to "type" (for the type of the tail element), |
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| 232 | # to "object" (for an object representing the DOM node referenced by |
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| 233 | # the path). |
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| 234 | # ---------------------------------------------------------------------- |
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| 235 | itcl::body Rappture::LibraryObj::element {args} { |
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| 236 | array set params { |
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| 237 | -as component |
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| 238 | } |
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| 239 | while {[llength $args] > 1} { |
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| 240 | set first [lindex $args 0] |
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| 241 | if {[string index $first 0] == "-"} { |
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| 242 | set choices [array names params] |
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| 243 | if {[lsearch $choices $first] < 0} { |
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| 244 | error "bad option \"$first\": should be [join [lsort $choices] {, }]" |
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| 245 | } |
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| 246 | set params($first) [lindex $args 1] |
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| 247 | set args [lrange $args 2 end] |
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| 248 | } else { |
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| 249 | break |
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| 250 | } |
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| 251 | } |
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| 252 | if {[llength $args] > 1} { |
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| 253 | error "wrong # args: should be \"element ?-as fval? ?path?\"" |
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| 254 | } |
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| 255 | set path [lindex $args 0] |
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| 256 | |
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| 257 | set node [find $path] |
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| 258 | if {$node == ""} { |
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| 259 | return "" |
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| 260 | } |
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| 261 | |
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| 262 | switch -- $params(-as) { |
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| 263 | object { |
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| 264 | return [::Rappture::LibraryObj ::#auto $node] |
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| 265 | } |
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| 266 | component { |
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| 267 | return [node2comp $node] |
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| 268 | } |
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| 269 | id { |
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| 270 | return [node2name $node] |
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| 271 | } |
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| 272 | path { |
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| 273 | return [node2path $node] |
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| 274 | } |
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| 275 | type { |
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| 276 | return [$node nodeName] |
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| 277 | } |
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| 278 | default { |
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| 279 | error "bad flavor \"$params(-as)\": should be component, id, object, path, type" |
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| 280 | } |
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| 281 | } |
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| 282 | } |
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| 283 | |
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| 284 | # ---------------------------------------------------------------------- |
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| 285 | # USAGE: parent ?-as <fval>? ?<path>? |
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| 286 | # |
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| 287 | # Clients use this to query the parent of a particular element. |
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| 288 | # This is just like the "element" method, but it returns the parent |
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| 289 | # of the element instead of the element itself. |
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| 290 | # |
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| 291 | # By default, this method returns a list of component names "type(id)". |
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| 292 | # This is changed by setting the -as argument to "id" (for tail |
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| 293 | # names of all children), to "type" (for the types of all children), |
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| 294 | # to "object" (for a list of objects representing the DOM nodes for |
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| 295 | # all children). |
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| 296 | # ---------------------------------------------------------------------- |
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| 297 | itcl::body Rappture::LibraryObj::parent {args} { |
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| 298 | array set params { |
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| 299 | -as component |
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| 300 | } |
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| 301 | while {[llength $args] > 1} { |
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| 302 | set first [lindex $args 0] |
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| 303 | if {[string index $first 0] == "-"} { |
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| 304 | set choices [array names params] |
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| 305 | if {[lsearch $choices $first] < 0} { |
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| 306 | error "bad option \"$first\": should be [join [lsort $choices] {, }]" |
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| 307 | } |
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| 308 | set params($first) [lindex $args 1] |
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| 309 | set args [lrange $args 2 end] |
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| 310 | } else { |
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| 311 | break |
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| 312 | } |
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| 313 | } |
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| 314 | if {[llength $args] > 1} { |
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| 315 | error "wrong # args: should be \"parent ?-as fval? ?path?\"" |
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| 316 | } |
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| 317 | set path [lindex $args 0] |
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| 318 | |
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| 319 | set node [find $path] |
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| 320 | if {$node == ""} { |
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| 321 | return "" |
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| 322 | } |
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| 323 | set node [$node parentNode] |
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| 324 | |
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| 325 | switch -- $params(-as) { |
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| 326 | object { |
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| 327 | return [::Rappture::LibraryObj ::#auto $node] |
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| 328 | } |
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| 329 | component { |
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| 330 | return [node2comp $node] |
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| 331 | } |
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| 332 | id { |
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| 333 | return [node2name $node] |
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| 334 | } |
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| 335 | path { |
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| 336 | return [node2path $node] |
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| 337 | } |
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| 338 | type { |
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| 339 | return [$node nodeName] |
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| 340 | } |
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| 341 | default { |
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| 342 | error "bad flavor \"$params(-as)\": should be component, id, object, path, type" |
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| 343 | } |
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| 344 | } |
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| 345 | } |
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| 346 | |
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| 347 | # ---------------------------------------------------------------------- |
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| 348 | # USAGE: children ?-as <fval>? ?-type <name>? ?<path>? |
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| 349 | # |
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| 350 | # Clients use this to query the children of a particular element |
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| 351 | # within the entire data structure. This is just like the "element" |
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| 352 | # method, but it returns the children of the element instead of the |
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| 353 | # element itself. If the optional -type argument is specified, then |
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| 354 | # the return list is restricted to children of the specified type. |
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| 355 | # |
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| 356 | # By default, this method returns a list of component names "type(id)". |
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| 357 | # This is changed by setting the -as argument to "id" (for tail |
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| 358 | # names of all children), to "type" (for the types of all children), |
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| 359 | # to "object" (for a list of objects representing the DOM nodes for |
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| 360 | # all children). |
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| 361 | # ---------------------------------------------------------------------- |
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| 362 | itcl::body Rappture::LibraryObj::children {args} { |
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| 363 | array set params { |
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| 364 | -as component |
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| 365 | -type "" |
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| 366 | } |
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| 367 | while {[llength $args] > 1} { |
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| 368 | set first [lindex $args 0] |
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| 369 | if {[string index $first 0] == "-"} { |
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| 370 | set choices [array names params] |
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| 371 | if {[lsearch $choices $first] < 0} { |
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| 372 | error "bad option \"$first\": should be [join [lsort $choices] {, }]" |
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| 373 | } |
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| 374 | set params($first) [lindex $args 1] |
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| 375 | set args [lrange $args 2 end] |
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| 376 | } else { |
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| 377 | break |
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| 378 | } |
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| 379 | } |
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| 380 | if {[llength $args] > 1} { |
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| 381 | error "wrong # args: should be \"children ?-as fval? ?-type name? ?path?\"" |
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| 382 | } |
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| 383 | set path [lindex $args 0] |
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| 384 | |
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| 385 | set node [find $path] |
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| 386 | if {$node == ""} { |
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| 387 | return "" |
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| 388 | } |
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| 389 | |
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| 390 | set nlist "" |
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| 391 | foreach n [$node childNodes] { |
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| 392 | set type [$n nodeName] |
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| 393 | if {[regexp {^#} $type]} { |
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| 394 | continue |
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| 395 | } |
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| 396 | if {$params(-type) != "" && $params(-type) != $type} { |
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| 397 | continue |
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| 398 | } |
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| 399 | lappend nlist $n |
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| 400 | } |
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| 401 | |
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| 402 | set rlist "" |
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| 403 | switch -- $params(-as) { |
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| 404 | object { |
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| 405 | foreach n $nlist { |
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| 406 | lappend rlist [::Rappture::LibraryObj ::#auto $n] |
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| 407 | } |
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| 408 | } |
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| 409 | component { |
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| 410 | foreach n $nlist { |
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| 411 | lappend rlist [node2comp $n] |
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| 412 | } |
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| 413 | } |
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| 414 | id { |
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| 415 | foreach n $nlist { |
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| 416 | lappend rlist [node2name $n] |
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| 417 | } |
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| 418 | } |
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| 419 | path { |
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| 420 | foreach n $nlist { |
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| 421 | lappend rlist [node2path $n] |
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| 422 | } |
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| 423 | } |
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| 424 | type { |
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| 425 | foreach n $nlist { |
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| 426 | lappend rlist [$n nodeName] |
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| 427 | } |
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| 428 | } |
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| 429 | default { |
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| 430 | error "bad flavor \"$params(-as)\": should be component, id, object, type" |
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| 431 | } |
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| 432 | } |
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| 433 | return $rlist |
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| 434 | } |
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| 435 | |
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| 436 | # ---------------------------------------------------------------------- |
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| 437 | # USAGE: get ?<path>? |
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| 438 | # |
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| 439 | # Clients use this to query the value of a node. If the path is not |
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| 440 | # specified, it returns the value associated with the root node. |
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| 441 | # Otherwise, it returns the value for the element specified by the |
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| 442 | # path. |
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| 443 | # ---------------------------------------------------------------------- |
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| 444 | itcl::body Rappture::LibraryObj::get {{path ""}} { |
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| 445 | set node [find $path] |
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| 446 | if {$node == ""} { |
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| 447 | return "" |
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| 448 | } |
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| 449 | return [string trim [Rappture::encoding::decode [$node text]]] |
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| 450 | } |
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| 451 | |
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| 452 | # ---------------------------------------------------------------------- |
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| 453 | # USAGE: put ?-append yes? ?-id num? ?-type string|file? ?-compress no? ?<path>? <string> |
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| 454 | # |
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| 455 | # Clients use this to set the value of a node. If the path is not |
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| 456 | # specified, it sets the value for the root node. Otherwise, it sets |
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| 457 | # the value for the element specified by the path. If the value is a |
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| 458 | # string, then it is treated as the text within the tag at the tail |
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| 459 | # of the path. If it is a DOM node or a library, then it is inserted |
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| 460 | # into the tree at the specified path. |
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| 461 | # |
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| 462 | # If the optional id is specified, then it sets the identifier for |
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| 463 | # the tag at the tail of the path. If the optional append flag is |
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| 464 | # specified, then the value is appended to the current value. |
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| 465 | # Otherwise, the value replaces the current value. |
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| 466 | # ---------------------------------------------------------------------- |
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| 467 | itcl::body Rappture::LibraryObj::put {args} { |
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| 468 | array set params { |
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| 469 | -id "" |
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| 470 | -append no |
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| 471 | -type string |
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| 472 | -compress no |
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| 473 | } |
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| 474 | while {[llength $args] > 1} { |
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| 475 | set first [lindex $args 0] |
|---|
| 476 | if {[string index $first 0] == "-"} { |
|---|
| 477 | set choices [array names params] |
|---|
| 478 | if {[lsearch $choices $first] < 0} { |
|---|
| 479 | error "bad option \"$first\": should be [join [lsort $choices] {, }]" |
|---|
| 480 | } |
|---|
| 481 | set params($first) [lindex $args 1] |
|---|
| 482 | set args [lrange $args 2 end] |
|---|
| 483 | } else { |
|---|
| 484 | break |
|---|
| 485 | } |
|---|
| 486 | } |
|---|
| 487 | if {[llength $args] > 2} { |
|---|
| 488 | error "wrong # args: should be \"put ?-append bval? ?-id num? ?-type string|file? ?-compress bval? ?path? string\"" |
|---|
| 489 | } |
|---|
| 490 | if {[llength $args] == 2} { |
|---|
| 491 | set path [lindex $args 0] |
|---|
| 492 | set str [lindex $args 1] |
|---|
| 493 | } else { |
|---|
| 494 | set path "" |
|---|
| 495 | set str [lindex $args 0] |
|---|
| 496 | } |
|---|
| 497 | |
|---|
| 498 | if {$params(-type) == "file"} { |
|---|
| 499 | set fileName $str |
|---|
| 500 | set fid [open $fileName r] |
|---|
| 501 | fconfigure $fid -translation binary |
|---|
| 502 | set str [read $fid] |
|---|
| 503 | close $fid |
|---|
| 504 | } |
|---|
| 505 | |
|---|
| 506 | if {$params(-compress) || [Rappture::encoding::is binary $str]} { |
|---|
| 507 | set str [Rappture::encoding::encode $str] |
|---|
| 508 | } |
|---|
| 509 | |
|---|
| 510 | set node [find -create $path] |
|---|
| 511 | |
|---|
| 512 | # |
|---|
| 513 | # Clean up any nodes that don't belong. If we're appending |
|---|
| 514 | # the value, then clean up only child <tag> nodes. Otherwise, |
|---|
| 515 | # clean up all nodes. |
|---|
| 516 | # |
|---|
| 517 | set nlist "" |
|---|
| 518 | if {$params(-append)} { |
|---|
| 519 | foreach n [$node childNodes] { |
|---|
| 520 | if {[$n nodeType] != "TEXT_NODE"} { |
|---|
| 521 | lappend nlist $n |
|---|
| 522 | } |
|---|
| 523 | } |
|---|
| 524 | } else { |
|---|
| 525 | set nlist [$node childNodes] |
|---|
| 526 | } |
|---|
| 527 | foreach n $nlist { |
|---|
| 528 | $n delete |
|---|
| 529 | } |
|---|
| 530 | |
|---|
| 531 | if {[Rappture::library isvalid $str]} { |
|---|
| 532 | foreach n [[$str info variable _node -value] childNodes] { |
|---|
| 533 | $node appendXML [$n asXML] |
|---|
| 534 | } |
|---|
| 535 | } else { |
|---|
| 536 | set n [$_document createText $str] |
|---|
| 537 | $node appendChild $n |
|---|
| 538 | if {"" != $params(-id)} { |
|---|
| 539 | $node setAttribute id $params(-id) |
|---|
| 540 | } |
|---|
| 541 | } |
|---|
| 542 | return "" |
|---|
| 543 | } |
|---|
| 544 | |
|---|
| 545 | # ---------------------------------------------------------------------- |
|---|
| 546 | # USAGE: copy <path> from ?<xmlobj>? <path> |
|---|
| 547 | # |
|---|
| 548 | # Clients use this to copy the value from one xmlobj/path to another. |
|---|
| 549 | # If the <xmlobj> is not specified, it is assumed to be the same as |
|---|
| 550 | # the current object. |
|---|
| 551 | # ---------------------------------------------------------------------- |
|---|
| 552 | itcl::body Rappture::LibraryObj::copy {path from args} { |
|---|
| 553 | if {[llength $args] == 1} { |
|---|
| 554 | set xmlobj $this |
|---|
| 555 | set fpath [lindex $args 0] |
|---|
| 556 | } elseif {[llength $args] == 2} { |
|---|
| 557 | set xmlobj [lindex $args 0] |
|---|
| 558 | set fpath [lindex $args 1] |
|---|
| 559 | } else { |
|---|
| 560 | error "wrong # args: should be \"copy path from ?xmlobj? path\"" |
|---|
| 561 | } |
|---|
| 562 | if {$from != "from"} { |
|---|
| 563 | error "bad syntax: should be \"copy path from ?xmlobj? path\"" |
|---|
| 564 | } |
|---|
| 565 | |
|---|
| 566 | if {[llength [$xmlobj children $fpath]] == 0} { |
|---|
| 567 | set val [$xmlobj get $fpath] |
|---|
| 568 | put $path $val |
|---|
| 569 | } else { |
|---|
| 570 | set obj [$xmlobj element -as object $fpath] |
|---|
| 571 | put $path $obj |
|---|
| 572 | itcl::delete object $obj |
|---|
| 573 | } |
|---|
| 574 | } |
|---|
| 575 | |
|---|
| 576 | # ---------------------------------------------------------------------- |
|---|
| 577 | # USAGE: remove ?<path>? |
|---|
| 578 | # |
|---|
| 579 | # Clients use this to remove the specified node. Removes the node |
|---|
| 580 | # from the tree. |
|---|
| 581 | # ---------------------------------------------------------------------- |
|---|
| 582 | itcl::body Rappture::LibraryObj::remove {{path ""}} { |
|---|
| 583 | set node [find $path] |
|---|
| 584 | if {$node != ""} { |
|---|
| 585 | $node delete |
|---|
| 586 | } |
|---|
| 587 | } |
|---|
| 588 | |
|---|
| 589 | # ---------------------------------------------------------------------- |
|---|
| 590 | # USAGE: xml |
|---|
| 591 | # |
|---|
| 592 | # Returns a string representing the XML information for the information |
|---|
| 593 | # in this library. |
|---|
| 594 | # ---------------------------------------------------------------------- |
|---|
| 595 | itcl::body Rappture::LibraryObj::xml {} { |
|---|
| 596 | return [$_node asXML] |
|---|
| 597 | } |
|---|
| 598 | |
|---|
| 599 | # ---------------------------------------------------------------------- |
|---|
| 600 | # USAGE: diff <libobj> |
|---|
| 601 | # |
|---|
| 602 | # Compares the entities in this object to those in another and |
|---|
| 603 | # returns a list of differences. The result is a list of the form: |
|---|
| 604 | # {op1 path1 oldval1 newval1 ...} where each "op" is +/-/c for |
|---|
| 605 | # added/subtracted/changed, "path" is the path within the library |
|---|
| 606 | # that is different, and "oldval"/"newval" give the values for the |
|---|
| 607 | # object at the path. |
|---|
| 608 | # ---------------------------------------------------------------------- |
|---|
| 609 | itcl::body Rappture::LibraryObj::diff {libobj} { |
|---|
| 610 | set rlist "" |
|---|
| 611 | |
|---|
| 612 | # query the values for all entities in both objects |
|---|
| 613 | set thisv [Rappture::entities $this input] |
|---|
| 614 | set otherv [Rappture::entities $libobj input] |
|---|
| 615 | |
|---|
| 616 | # scan through values for this object, and compare against other one |
|---|
| 617 | foreach path $thisv { |
|---|
| 618 | set i [lsearch -exact $otherv $path] |
|---|
| 619 | if {$i < 0} { |
|---|
| 620 | foreach {raw norm} [value $this $path] break |
|---|
| 621 | lappend rlist - $path $raw "" |
|---|
| 622 | } else { |
|---|
| 623 | foreach {traw tnorm} [value $this $path] break |
|---|
| 624 | foreach {oraw onorm} [value $libobj $path] break |
|---|
| 625 | if {![string equal $tnorm $onorm]} { |
|---|
| 626 | lappend rlist c $path $traw $oraw |
|---|
| 627 | } |
|---|
| 628 | set otherv [lreplace $otherv $i $i] |
|---|
| 629 | } |
|---|
| 630 | } |
|---|
| 631 | |
|---|
| 632 | # add any values left over in the other object |
|---|
| 633 | foreach path $otherv { |
|---|
| 634 | foreach {oraw onorm} [value $libobj $path] break |
|---|
| 635 | lappend rlist + $path "" $oraw |
|---|
| 636 | } |
|---|
| 637 | return $rlist |
|---|
| 638 | } |
|---|
| 639 | |
|---|
| 640 | # ---------------------------------------------------------------------- |
|---|
| 641 | # USAGE: value <object> <path> |
|---|
| 642 | # |
|---|
| 643 | # Used to query the "value" associated with the <path> in an XML |
|---|
| 644 | # <object>. This is a little more complicated than the object's |
|---|
| 645 | # "get" method. It handles things like structures and values |
|---|
| 646 | # with normalized units. |
|---|
| 647 | # |
|---|
| 648 | # Returns a list of two items: {raw norm} where "raw" is the raw |
|---|
| 649 | # value from the "get" method and "norm" is the normalized value |
|---|
| 650 | # produced by this routine. Example: {300K 300} |
|---|
| 651 | # |
|---|
| 652 | # Right now, it is a handy little utility used by the "diff" method. |
|---|
| 653 | # Eventually, it should be moved to a better object-oriented |
|---|
| 654 | # implementation, where each Rappture type could overload the |
|---|
| 655 | # various bits of processing below. So we leave it as a "proc" |
|---|
| 656 | # now instead of a method, since it should be deprecated soon. |
|---|
| 657 | # ---------------------------------------------------------------------- |
|---|
| 658 | itcl::body Rappture::LibraryObj::value {libobj path} { |
|---|
| 659 | switch -- [$libobj element -as type $path] { |
|---|
| 660 | structure { |
|---|
| 661 | set raw $path |
|---|
| 662 | # try to find a label to represent the structure |
|---|
| 663 | set val [$libobj get $path.about.label] |
|---|
| 664 | if {"" == $val} { |
|---|
| 665 | set val [$libobj get $path.current.about.label] |
|---|
| 666 | } |
|---|
| 667 | if {"" == $val} { |
|---|
| 668 | if {[$libobj element $path.current] != ""} { |
|---|
| 669 | set comps [$libobj children $path.current.components] |
|---|
| 670 | set val "<structure> with [llength $comps] components" |
|---|
| 671 | } else { |
|---|
| 672 | set val "<structure>" |
|---|
| 673 | } |
|---|
| 674 | } |
|---|
| 675 | return [list $raw $val] |
|---|
| 676 | } |
|---|
| 677 | number { |
|---|
| 678 | # get the usual value... |
|---|
| 679 | set raw "" |
|---|
| 680 | if {"" != [$libobj element $path.current]} { |
|---|
| 681 | set raw [$libobj get $path.current] |
|---|
| 682 | } elseif {"" != [$libobj element $path.default]} { |
|---|
| 683 | set raw [$libobj get $path.default] |
|---|
| 684 | } |
|---|
| 685 | if {"" != $raw} { |
|---|
| 686 | set val $raw |
|---|
| 687 | # then normalize to default units |
|---|
| 688 | set units [$libobj get $path.units] |
|---|
| 689 | if {"" != $units} { |
|---|
| 690 | set val [Rappture::Units::convert $val \ |
|---|
| 691 | -context $units -to $units -units off] |
|---|
| 692 | } |
|---|
| 693 | } |
|---|
| 694 | return [list $raw $val] |
|---|
| 695 | } |
|---|
| 696 | } |
|---|
| 697 | |
|---|
| 698 | # for all other types, get the value (current, or maybe default) |
|---|
| 699 | set raw "" |
|---|
| 700 | if {"" != [$libobj element $path.current]} { |
|---|
| 701 | set raw [$libobj get $path.current] |
|---|
| 702 | } elseif {"" != [$libobj element $path.default]} { |
|---|
| 703 | set raw [$libobj get $path.default] |
|---|
| 704 | } |
|---|
| 705 | return [list $raw $raw] |
|---|
| 706 | } |
|---|
| 707 | |
|---|
| 708 | # ---------------------------------------------------------------------- |
|---|
| 709 | # USAGE: find ?-create? <path> |
|---|
| 710 | # |
|---|
| 711 | # Used internally to find a particular element within the root node |
|---|
| 712 | # according to the path, which is a string of the form |
|---|
| 713 | # "typeNN(id).typeNN(id). ...", where each "type" is a tag <type>; |
|---|
| 714 | # if the optional NN is specified, it indicates an index for the |
|---|
| 715 | # <type> tag within its parent; if the optional (id) part is included, |
|---|
| 716 | # it indicates a tag of the form <type id="id">. |
|---|
| 717 | # |
|---|
| 718 | # By default, it looks for an element along the path and returns None |
|---|
| 719 | # if not found. If the create flag is set, it creates various elements |
|---|
| 720 | # along the path as it goes. This is useful for "put" operations. |
|---|
| 721 | # |
|---|
| 722 | # If you include "#" instead of a specific number, a node will be |
|---|
| 723 | # created automatically with a new number. For example, the path |
|---|
| 724 | # "foo.bar#" called the first time will create "foo.bar", the second |
|---|
| 725 | # time "foo.bar1", the third time "foo.bar2" and so forth. |
|---|
| 726 | # |
|---|
| 727 | # Returns an object representing the element indicated by the path, |
|---|
| 728 | # or "" if the path is not found. |
|---|
| 729 | # ---------------------------------------------------------------------- |
|---|
| 730 | itcl::body Rappture::LibraryObj::find {args} { |
|---|
| 731 | set create 0 |
|---|
| 732 | while {[llength $args] > 1} { |
|---|
| 733 | set first [lindex $args 0] |
|---|
| 734 | set args [lrange $args 1 end] |
|---|
| 735 | if {$first == "-create"} { |
|---|
| 736 | set create 1 |
|---|
| 737 | } else { |
|---|
| 738 | error "bad option \"$first\": should be -create" |
|---|
| 739 | } |
|---|
| 740 | } |
|---|
| 741 | if {[llength $args] != 1} { |
|---|
| 742 | error "wrong # args: should be \"find ?-create? path\"" |
|---|
| 743 | } |
|---|
| 744 | set path [lindex $args 0] |
|---|
| 745 | |
|---|
| 746 | if {$path == ""} { |
|---|
| 747 | return $_node |
|---|
| 748 | } |
|---|
| 749 | set path [path2list $path] |
|---|
| 750 | |
|---|
| 751 | # |
|---|
| 752 | # Follow the given path and look for all of the parts. |
|---|
| 753 | # |
|---|
| 754 | set lastnode $_node |
|---|
| 755 | set node $lastnode |
|---|
| 756 | foreach part $path { |
|---|
| 757 | if {![regexp {^(([a-zA-Z_]+#?)([0-9]*))?(\((.*)\))?$} $part \ |
|---|
| 758 | match dummy type index dummy name]} { |
|---|
| 759 | error "bad path component \"$part\"" |
|---|
| 760 | } |
|---|
| 761 | # |
|---|
| 762 | # If the name is like "type2", then look for elements with |
|---|
| 763 | # the type name and return the one with the given index. |
|---|
| 764 | # If the name is like "type", then assume the index is 0. |
|---|
| 765 | # |
|---|
| 766 | if {$name == ""} { |
|---|
| 767 | if {$index == ""} { |
|---|
| 768 | set index 0 |
|---|
| 769 | } |
|---|
| 770 | set nlist [childnodes $node $type] |
|---|
| 771 | set node [lindex $nlist $index] |
|---|
| 772 | } else { |
|---|
| 773 | # |
|---|
| 774 | # If the name is like "type(id)", then look for elements |
|---|
| 775 | # that match the type and see if one has the requested name. |
|---|
| 776 | # if the name is like "(id)", then look for any elements |
|---|
| 777 | # with the requested name. |
|---|
| 778 | # |
|---|
| 779 | if {$type != ""} { |
|---|
| 780 | set nlist [childnodes $node $type] |
|---|
| 781 | } else { |
|---|
| 782 | set nlist [$node childNodes] |
|---|
| 783 | } |
|---|
| 784 | set found 0 |
|---|
| 785 | foreach n $nlist { |
|---|
| 786 | if {[catch {$n getAttribute id} tag]} { set tag "" } |
|---|
| 787 | if {$tag == $name} { |
|---|
| 788 | set found 1 |
|---|
| 789 | break |
|---|
| 790 | } |
|---|
| 791 | } |
|---|
| 792 | set node [expr {($found) ? $n : ""}] |
|---|
| 793 | } |
|---|
| 794 | |
|---|
| 795 | if {$node == ""} { |
|---|
| 796 | if {!$create} { |
|---|
| 797 | return "" |
|---|
| 798 | } |
|---|
| 799 | |
|---|
| 800 | # |
|---|
| 801 | # If the "create" flag is set, then create a node |
|---|
| 802 | # with the specified "type(id)" and continue on. |
|---|
| 803 | # If the type is "type#", then create a node with |
|---|
| 804 | # an automatic number. |
|---|
| 805 | # |
|---|
| 806 | if {![regexp {^([^\(]+)\(([^\)]+)\)$} $part match type name]} { |
|---|
| 807 | set type $part |
|---|
| 808 | set name "" |
|---|
| 809 | } |
|---|
| 810 | |
|---|
| 811 | if {[string match *# $type]} { |
|---|
| 812 | set type [string trimright $type #] |
|---|
| 813 | set node [$_document createElement $type] |
|---|
| 814 | |
|---|
| 815 | # find the last node of same type and append there |
|---|
| 816 | set pos "" |
|---|
| 817 | foreach n [$lastnode childNodes] { |
|---|
| 818 | if {[$n nodeName] == $type} { |
|---|
| 819 | set pos $n |
|---|
| 820 | } |
|---|
| 821 | } |
|---|
| 822 | if {$pos != ""} { |
|---|
| 823 | set pos [$pos nextSibling] |
|---|
| 824 | } |
|---|
| 825 | if {$pos != ""} { |
|---|
| 826 | $lastnode insertBefore $node $pos |
|---|
| 827 | } else { |
|---|
| 828 | $lastnode appendChild $node |
|---|
| 829 | } |
|---|
| 830 | } else { |
|---|
| 831 | set node [$_document createElement $type] |
|---|
| 832 | $lastnode appendChild $node |
|---|
| 833 | } |
|---|
| 834 | if {"" != $name} { |
|---|
| 835 | $node setAttribute id $name |
|---|
| 836 | } |
|---|
| 837 | } |
|---|
| 838 | set lastnode $node |
|---|
| 839 | } |
|---|
| 840 | return $node |
|---|
| 841 | } |
|---|
| 842 | |
|---|
| 843 | # ---------------------------------------------------------------------- |
|---|
| 844 | # USAGE: path2list <path> |
|---|
| 845 | # |
|---|
| 846 | # Converts a path of the form "foo(a).bar.baz" into a list of the |
|---|
| 847 | # form "foo(a) bar baz". This is a little more complicated than |
|---|
| 848 | # splitting on the .'s, since the stuff in ()'s might have embedded |
|---|
| 849 | # .'s. Returns a proper Tcl list for all elements of the path. |
|---|
| 850 | # ---------------------------------------------------------------------- |
|---|
| 851 | itcl::body Rappture::LibraryObj::path2list {path} { |
|---|
| 852 | # |
|---|
| 853 | # Normally, we just split on .'s within the path. But there |
|---|
| 854 | # might be some .'s embedded within ()'s in the path. Change |
|---|
| 855 | # any embedded .'s to an out-of-band character, then split on |
|---|
| 856 | # the .'s, and change the embedded .'s back. |
|---|
| 857 | # |
|---|
| 858 | if {[regexp {(\([^\)]*)\.([^\)]*\))} $path]} { |
|---|
| 859 | while {[regsub -all {(\([^\)]*)\.([^\)]*\))} $path "\\1\007\\2" path]} { |
|---|
| 860 | # keep fixing... |
|---|
| 861 | } |
|---|
| 862 | } |
|---|
| 863 | set path [split $path .] |
|---|
| 864 | regsub -all {\007} $path {.} path |
|---|
| 865 | |
|---|
| 866 | return $path |
|---|
| 867 | } |
|---|
| 868 | |
|---|
| 869 | # ---------------------------------------------------------------------- |
|---|
| 870 | # USAGE: node2name <node> |
|---|
| 871 | # |
|---|
| 872 | # Used internally to create a name for the specified node. If the |
|---|
| 873 | # node doesn't have a specific name ("id" attribute) then a name of |
|---|
| 874 | # the form "type123" is constructed. |
|---|
| 875 | # ---------------------------------------------------------------------- |
|---|
| 876 | itcl::body Rappture::LibraryObj::node2name {node} { |
|---|
| 877 | if {[catch {$node getAttribute id} name]} { set name "" } |
|---|
| 878 | if {$name == ""} { |
|---|
| 879 | set pnode [$node parentNode] |
|---|
| 880 | if {$pnode == ""} { |
|---|
| 881 | return "" |
|---|
| 882 | } |
|---|
| 883 | set type [$node nodeName] |
|---|
| 884 | set siblings [childnodes $pnode $type] |
|---|
| 885 | set index [lsearch $siblings $node] |
|---|
| 886 | if {$index == 0} { |
|---|
| 887 | set name $type |
|---|
| 888 | } else { |
|---|
| 889 | set name "$type$index" |
|---|
| 890 | } |
|---|
| 891 | } |
|---|
| 892 | return $name |
|---|
| 893 | } |
|---|
| 894 | |
|---|
| 895 | # ---------------------------------------------------------------------- |
|---|
| 896 | # USAGE: node2comp <node> |
|---|
| 897 | # |
|---|
| 898 | # Used internally to create a path component name for the specified |
|---|
| 899 | # node. A path component name has the form "type(id)" or just |
|---|
| 900 | # "type##" if the node doesn't have a name. This name can be used |
|---|
| 901 | # in a path to uniquely address the component. |
|---|
| 902 | # ---------------------------------------------------------------------- |
|---|
| 903 | itcl::body Rappture::LibraryObj::node2comp {node} { |
|---|
| 904 | set type [$node nodeName] |
|---|
| 905 | if {[catch {$node getAttribute id} name]} { set name "" } |
|---|
| 906 | if {$name == ""} { |
|---|
| 907 | set pnode [$node parentNode] |
|---|
| 908 | if {$pnode == ""} { |
|---|
| 909 | return "" |
|---|
| 910 | } |
|---|
| 911 | set siblings [childnodes $pnode $type] |
|---|
| 912 | set index [lsearch $siblings $node] |
|---|
| 913 | if {$index == 0} { |
|---|
| 914 | set name $type |
|---|
| 915 | } else { |
|---|
| 916 | set name "$type$index" |
|---|
| 917 | } |
|---|
| 918 | } else { |
|---|
| 919 | set name "${type}($name)" |
|---|
| 920 | } |
|---|
| 921 | return $name |
|---|
| 922 | } |
|---|
| 923 | |
|---|
| 924 | # ---------------------------------------------------------------------- |
|---|
| 925 | # USAGE: node2path <node> |
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| 926 | # |
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| 927 | # Used internally to create a full path name for the specified node. |
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| 928 | # The path is relative to the current object, so it stops when the |
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| 929 | # parent is the root node for this object. |
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| 930 | # ---------------------------------------------------------------------- |
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| 931 | itcl::body Rappture::LibraryObj::node2path {node} { |
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| 932 | set path [node2comp $node] |
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| 933 | set node [$node parentNode] |
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| 934 | while {$node != "" && $node != $_node} { |
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| 935 | set path "[node2comp $node].$path" |
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| 936 | set node [$node parentNode] |
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| 937 | } |
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| 938 | return $path |
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| 939 | } |
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| 940 | |
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| 941 | # ---------------------------------------------------------------------- |
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| 942 | # USAGE: childnodes <node> <type> |
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| 943 | # |
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| 944 | # Used internally to return a list of children for the given <node> |
|---|
| 945 | # that match a specified <type>. Similar to XML getElementsByTagName, |
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| 946 | # but returns only direct children of the <node>. |
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| 947 | # ---------------------------------------------------------------------- |
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| 948 | itcl::body Rappture::LibraryObj::childnodes {node type} { |
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| 949 | set rlist "" |
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| 950 | foreach cnode [$node childNodes] { |
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| 951 | if {[$cnode nodeName] == $type} { |
|---|
| 952 | lappend rlist $cnode |
|---|
| 953 | } |
|---|
| 954 | } |
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| 955 | return $rlist |
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| 956 | } |
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