Merge pull request #6623 from bwmilby/bwm-lcb-manifest

livecodepanos · web-flow · commit db32c3a27e16 · 2018-08-23T14:10:50.000+03:00
[[ LCB ]] [[ Docs ]] Add OS and Platforms to LCB Metadata
diff --git a/docs/guides/LiveCode Builder Language Reference.md b/docs/guides/LiveCode Builder Language Reference.md
@@ -188,6 +188,8 @@ At the moment, the following keys are understood:
  - description: a simple description of the module's purpose
  - version: a string in the form X.Y.Z (with X, Y and Z integers) describing the modules version
  - author: the name of the author of the module
+ - os: the operating systems where the module can be used
+ - platforms: the platforms where the module can be used
 
 > **Note:** The current metadata mechanism is unlikely to remain part of
 > the language. It is intended that it will be replaced by a package
diff --git a/docs/guides/LiveCode Builder Style Guide.md b/docs/guides/LiveCode Builder Style Guide.md
@@ -23,7 +23,7 @@ the "any later version" clause.
 ### Module name
 
 The module name uses reverse DNS notation.  For example, a module created by
-the Example Organisation would use module names beginning with `org.example`.
+the Example Organization would use module names beginning with `org.example`.
 
 Replace any hyphen (`-`) characters in a domain name with underscore (`_`)
 characters.  For example, a module derived from the `fizz-buzz.example.org`
diff --git a/extensions/libraries/androidaudiorecorder/androidaudiorecorder.lcb b/extensions/libraries/androidaudiorecorder/androidaudiorecorder.lcb
@@ -16,6 +16,7 @@ library com.livecode.library.androidaudiorecorder
 metadata version is "1.0.0"
 metadata author is "LiveCode"
 metadata title is "Android Audio Recorder"
+metadata os is "android"
 
 -- We need permissions to record audio and write to the external
 -- storage directory.
diff --git a/extensions/libraries/androidbgaudio/androidbgaudio.lcb b/extensions/libraries/androidbgaudio/androidbgaudio.lcb
@@ -33,6 +33,7 @@ use com.livecode.library.androidutils
 metadata version is "0.0.0"
 metadata author is "LiveCode"
 metadata title is "Android Background Audio"
+metadata os is "android"
 
 ----
 
diff --git a/extensions/libraries/toast/toast.lcb b/extensions/libraries/toast/toast.lcb
@@ -18,8 +18,6 @@ along with LiveCode.  If not see <http://www.gnu.org/licenses/>.  */
 /**
 A library for displaying toasts on mobile
 
-Platforms: android
-
 Description:
 A toast is a non-modal temporary notification displayed to the user. 
 */
@@ -31,6 +29,7 @@ use com.livecode.java
 metadata version is "1.0.0"
 metadata author is "LiveCode"
 metadata title is "Toast Notification Library"
+metadata os is "android"
 
 --==============================================================================
 -- Foreign handlers
@@ -77,8 +76,6 @@ end handler
 /**
 Display a toast notification
 
-Platforms: android
-
 Example:
 mobileToast "Hello, I am a toast!", "short"
 
@@ -119,8 +116,6 @@ end handler
 /**
 Cancel the current toast
 
-Platforms: android
-
 Description:
 Use <mobileToastCancel> to cancel the currently displayed toast.
 */
diff --git a/extensions/modules/android-utils/android-utils.lcb b/extensions/modules/android-utils/android-utils.lcb
@@ -29,6 +29,7 @@ use com.livecode.library.widgetutils
 metadata version is "1.0.0"
 metadata author is "LiveCode"
 metadata title is "Android Utilities"
+metadata os is "android"
 
 private handler ColorComponentToInt(in pComponent as Real) returns Integer
     multiply pComponent by 255
diff --git a/extensions/script-libraries/extension-utils/extension-utils.livecodescript b/extensions/script-libraries/extension-utils/extension-utils.livecodescript
@@ -760,6 +760,8 @@ constant kNameKey = "name"
 constant kVersionKey = "version"
 constant kAuthorKey = "author"
 constant kTitleKey = "title"
+constant kPlatformsKey = "platforms"
+constant kOsKey = "os"
 constant kTypeKey = "type"
 constant kIdeKey = "ide"
 constant kModuleFilesKey = "module_files"
@@ -1475,6 +1477,20 @@ function extensionFetchMetadata pManifestPath
    end if
    put tTargetAuthor into tDataA[kAuthorKey]
    
+   local tTargetPlatforms
+   put textDecode(revXMLNodeContents(tTreeID, "/package/platforms"), "utf-8") into tTargetPlatforms
+   if tTargetPlatforms is empty or tTargetPlatforms begins with "xmlerr" then
+      put empty into tTargetPlatforms
+   end if
+   put tTargetPlatforms into tDataA[kPlatformsKey]
+   
+   local tTargetOs
+   put textDecode(revXMLNodeContents(tTreeID, "/package/os"), "utf-8") into tTargetOs
+   if tTargetOs is empty or tTargetOs begins with "xmlerr" then
+      put empty into tTargetOs
+   end if
+   put tTargetOs into tDataA[kOsKey]
+   
    # Fetch property metadata
    local tMetadataValue, tMetadataKey
    local tMetadataNodes, tMetadataA, tKeys, tValue
diff --git a/extensions/widgets/androidbutton/androidbutton.lcb b/extensions/widgets/androidbutton/androidbutton.lcb
@@ -47,6 +47,8 @@ use com.livecode.library.androidutils
 metadata version is "1.0.0"
 metadata author is "LiveCode"
 metadata title is "Android Native Button"
+metadata os is "android"
+metadata platforms is "mobile"
 metadata svgicon is "M25.34,0H2.1A2.1,2.1,0,0,0,0,2.1V13.19a2.1,2.1,0,0,0,2.1,2.1H25.34a2.1,2.1,0,0,0,2.1-2.1V2.1A2.1,2.1,0,0,0,25.34,0Zm-15,9.49a.76.76,0,0,1-1.51.15.85.85,0,0,1,0-.15q0-1.58,0-3.16a.76.76,0,0,1,1.51-.12.91.91,0,0,1,0,.13q0,.78,0,1.57T10.35,9.49Zm7.08,1.11a.8.8,0,0,1-.4.71.78.78,0,0,1-.42.12h-.49c-.05,0-.05,0-.05.05,0,.54,0,1.08,0,1.62a.76.76,0,0,1-1.51.13.75.75,0,0,1,0-.14q0-.81,0-1.62s0,0,0,0h-.94s0,0,0,0c0,.55,0,1.09,0,1.64a.76.76,0,0,1-1.51.12.76.76,0,0,1,0-.14q0-.81,0-1.62s0,0,0,0h-.5a.82.82,0,0,1-.81-.64.8.8,0,0,1,0-.18q0-2.44,0-4.88s0,0,0,0h6.71s0,0,0,0Q17.43,8.17,17.43,10.6Zm0-5.18H10.68s0,0,0,0a2.93,2.93,0,0,1,.14-.86,3,3,0,0,1,.49-.92,3.27,3.27,0,0,1,.89-.79l.18-.1s0,0,0,0l-.51-.92a.11.11,0,0,1,0-.16.11.11,0,0,1,.16,0l.17.3.35.64s0,0,.06,0a3.5,3.5,0,0,1,.93-.26,3.67,3.67,0,0,1,1.89.24h0c.07,0,.07,0,.1,0l.5-.9a.11.11,0,0,1,.12-.07.11.11,0,0,1,.09.08.12.12,0,0,1,0,.09l-.51.91s0,0,0,.07a3.23,3.23,0,0,1,1.35,1.34,2.91,2.91,0,0,1,.33,1.08c0,.09,0,.17,0,.26S17.43,5.42,17.41,5.42Zm1.82,2.49q0,.79,0,1.59a.76.76,0,0,1-1.51.11.85.85,0,0,1,0-.12q0-1.58,0-3.15a.76.76,0,0,1,1.51-.15.88.88,0,0,1,0,.16Q19.24,7.12,19.24,7.91Zm-3.35-4a.28.28,0,1,1-.28-.28A.29.29,0,0,1,15.89,3.89Zm-3.14,0a.28.28,0,1,1-.28-.28A.28.28,0,0,1,12.75,3.89Z"
 
 /**
diff --git a/extensions/widgets/androidfield/androidfield.lcb b/extensions/widgets/androidfield/androidfield.lcb
@@ -127,6 +127,7 @@ use com.livecode.library.scriptitems
 metadata version is "1.0.0"
 metadata author is "LiveCode"
 metadata title is "Android Native Field"
+metadata os is "android"
 metadata svgicon is  "M28.06,4.95a.34.34,0,1,1,.34.34A.34.34,0,0,1,28.06,4.95Zm-3.45.34a.34.34,0,1,0-.34-.34A.34.34,0,0,0,24.6,5.29ZM36.25,2V17.24a2,2,0,0,1-2,2H2a2,2,0,0,1-2-2V2A2,2,0,0,1,2,0h32.3A2,2,0,0,1,36.25,2ZM22.39,6.8h8.23a3.76,3.76,0,0,0-2.1-3.31l.65-1.17a.13.13,0,0,0-.05-.18l-.06,0a.13.13,0,0,0-.11.07l-.66,1.19a4.43,4.43,0,0,0-3.56,0l-.66-1.19a.13.13,0,1,0-.23.13l.65,1.17A3.76,3.76,0,0,0,22.39,6.8ZM9.57,2.57H5v1.5H6.53v11H5v1.5H9.57v-1.5H8v-11H9.57ZM22,7.89a.92.92,0,0,0-1.84,0v3.84a.92.92,0,1,0,1.84,0Zm8.57-.76H22.39v6a1,1,0,0,0,1,1H24v2a.92.92,0,1,0,1.84,0v-2h1.23v2a.92.92,0,1,0,1.84,0v-2h.66a1,1,0,0,0,1-1Zm2.19.76a.92.92,0,0,0-1.84,0v3.84a.92.92,0,1,0,1.84,0Z"
 
 __safe foreign handler _JNI_GetSystemService(in pContext as JObject, in pService as JString) returns JObject \
diff --git a/extensions/widgets/html5button/html5button.lcb b/extensions/widgets/html5button/html5button.lcb
@@ -18,7 +18,6 @@ along with LiveCode.  If not see <http://www.gnu.org/licenses/>.  */
 /**
 This widget is a native button in HTML5.
 */
-
 widget com.livecode.widget.native.emscripten.button
 
 use com.livecode.foreign
@@ -30,6 +29,7 @@ use com.livecode.engine
 metadata version is "1.0.0"
 metadata author is "LiveCode"
 metadata title is "HTML5 Native Button"
+metadata os is "html5"
 metadata svgicon is "M 397,551.25195 a 2.1,2.1 0 0 0 -2.09961,2.09961 v 11.08985 A 2.1,2.1 0 0 0 397,566.54297 h 23.24023 a 2.1,2.1 0 0 0 2.09961,-2.10156 v -11.08985 a 2.1,2.1 0 0 0 -2.09961,-2.09961 z m 7.11328,2.52344 h 9.01367 l -0.81836,9.20703 -3.70117,1.03711 -3.67383,-1.03711 z m 1.67774,1.88281 0.30078,3.41797 h 3.91797 l -0.14063,1.46094 -1.26172,0.33789 -1.2539,-0.33789 -0.084,-0.89649 h -1.12109 l 0.14258,1.7793 2.3164,0.64063 h 0.0274 v -0.008 l 2.29882,-0.63476 0.31836,-3.48242 h -4.12304 l -0.0957,-1.15821 h 4.31446 l 0.10351,-1.11914 Z"
 
 /**
diff --git a/extensions/widgets/iosbutton/iosbutton.lcb b/extensions/widgets/iosbutton/iosbutton.lcb
@@ -45,6 +45,7 @@ use com.livecode.library.widgetutils
 metadata version is "1.0.0"
 metadata author is "LiveCode"
 metadata title is "iOS Native Button"
+metadata os is "ios"
 metadata svgicon is "M 535.66797 241.55273 C 491.1077 241.55273 455.23438 277.42605 455.23438 321.98633 L 455.23438 913.65039 C 455.23438 958.21066 491.1077 994.08398 535.66797 994.08398 L 2014.5762 994.08398 C 2059.1364 994.08398 2095.0098 958.21066 2095.0098 913.65039 L 2095.0098 321.98633 C 2095.0098 277.42605 2059.1364 241.55273 2014.5762 241.55273 L 535.66797 241.55273 z M 1155.1543 304.32422 C 1293.7311 304.30837 1399.8223 413.6262 1399.8223 613.28906 C 1399.8223 831.92443 1278.4507 931.3125 1145.5957 931.3125 C 1009.8798 931.3125 899.97656 823.80972 899.97656 622.33203 C 899.97656 415.4574 1013.7086 304.32422 1155.1543 304.32422 z M 1637.668 305.20508 C 1689.1647 305.20508 1728.013 319.66027 1746.082 332.30859 L 1738.9023 347.9043 C 1723.5436 337.0708 1682.0317 323.26562 1636.875 323.26562 C 1535.6646 323.26562 1491.5781 399.7417 1491.5781 456.04102 C 1491.5781 533.80129 1551.8559 559.80417 1629.5527 596.8457 C 1719.89 641.10692 1767.7656 680.13793 1767.7656 765.07031 C 1767.7656 856.31896 1702.7239 930.38477 1587.082 930.38477 C 1539.1912 930.38477 1484.0899 914.13108 1456.9863 893.34375 L 1465.0605 875.2832 C 1494.8824 895.15914 1546.3559 914.35352 1590.625 914.35352 C 1674.646 914.35352 1749.3711 855.57405 1749.3711 769.05664 C 1749.3711 688.7683 1699.5944 646.87616 1615.082 610.88867 C 1539.4457 578.68139 1471.4414 543.72442 1471.4414 457.89648 C 1471.4414 368.46267 1541.9021 305.20508 1637.668 305.20508 z M 1156.1758 325.58008 C 999.78351 325.58008 917.99023 456.01743 917.99023 617.80664 C 917.99023 783.58214 998.33285 912.36328 1146.4355 912.36328 C 1295.5685 912.36328 1381.1035 779.61907 1381.1035 615.91992 C 1381.1035 464.11624 1312.5681 325.58008 1156.1758 325.58008 z M 799.93164 336.48438 C 810.31342 336.48438 816.91406 344.97176 816.91406 355.35352 C 816.91406 366.19495 810.31315 374.21484 798.98828 374.21484 C 789.55751 374.21484 782.48047 366.19495 782.48047 355.35352 C 782.48047 344.97176 790.02537 336.48438 799.93164 336.48438 z M 790.80859 488.61328 L 808.58398 488.61328 L 808.58398 922.26953 L 790.80859 922.26953 L 790.80859 488.61328 z"
 
 /**
diff --git a/extensions/widgets/macbutton/macbutton.lcb b/extensions/widgets/macbutton/macbutton.lcb
@@ -45,6 +45,7 @@ use com.livecode.library.widgetutils
 metadata version is "1.0.0"
 metadata author is "LiveCode"
 metadata title is "Mac Native Button"
+metadata os is "mac"
 metadata svgicon is "m -19.375905,-4.8110434 c -1.108001,0 -2,0.892 -2,2 l 0,15.4453124 c 0,1.108 0.891999,2 2,2 l 27.5722648,0 c 1.108,0 2.0000002,-0.892 2.0000002,-2 l 0,-15.4453124 c 0,-1.108 -0.8920002,-2 -2.0000002,-2 l -27.5722648,0 z m 6.857421,2.3847656 13.8593751,0 c 0.588,0 1.0664531,0.4812187 1.0644531,1.0742188 l 0,9.8437501 c 0,0.594 -0.4764531,1.074219 -1.0644531,1.074219 l -5.3203125,0 c 0,0 0.5936093,2.1484369 3.22460934,2.1484369 l 0,0.537109 -3.49218744,0 -4.5683598,0 -1.8789057,0 0,-0.537109 c 2.5589997,0 3.4921873,-2.1484369 3.4921873,-2.1484369 l -5.3164063,0 c -0.589,-10e-7 -1.066406,-0.480219 -1.066406,-1.074219 l 0,-9.8437501 c 0,-0.593 0.477406,-1.0742188 1.066406,-1.0742188 z m 0.07617,1.1425781 0,9.1074219 13.7070312,0 0,-9.1074219 -13.7070312,0 z m 7.8105468,1.12890629 c 0.04,0.364 -0.1062656,0.7291875 -0.3222656,0.9921875 -0.217,0.26200001 -0.5709219,0.46450001 -0.9199219,0.43750001 -0.047,-0.35600001 0.128125,-0.72598441 0.328125,-0.95898441 0.225,-0.262 0.6020625,-0.4577031 0.9140625,-0.4707031 z m -0.00586,1.50195311 c 0.202,0.008 0.7707688,0.080281 1.1347656,0.6132813 -0.028,0.019 -0.6779219,0.3956406 -0.6699219,1.1816406 0.009,0.938 0.8220313,1.2508594 0.8320313,1.2558594 -0.008,0.021 -0.1296882,0.4448126 -0.4296876,0.8828125 -0.2579999,0.3770001 -0.5262187,0.7537187 -0.9492187,0.7617187 -0.415,0.008 -0.5474375,-0.2460937 -1.0234375,-0.2460937 -0.475,0 -0.6245782,0.2379062 -1.0175781,0.2539062 -0.4080001,0.015 -0.7185154,-0.4081561 -0.9785159,-0.7851562 -0.533,-0.7709999 -0.941531,-2.1769532 -0.394531,-3.1269532 0.272,-0.471 0.7581563,-0.7693437 1.2851562,-0.7773437 0.4,-0.007 0.7794376,0.2695313 1.0234376,0.2695313 0.246,0 0.7054999,-0.3322032 1.1875,-0.2832032 z M -5.5887964,8.147941 c -0.331,0 -0.5996094,0.2676561 -0.5996094,0.5976561 0,0.331 0.2686093,0.599609 0.5996094,0.599609 0.33,10e-7 0.5986093,-0.268609 0.5996093,-0.599609 10e-8,-0.33 -0.2696093,-0.5976561 -0.5996093,-0.5976561 z"
 
 /**
diff --git a/extensions/widgets/mactextfield/mactextfield.lcb b/extensions/widgets/mactextfield/mactextfield.lcb
@@ -69,6 +69,7 @@ use com.livecode.library.widgetutils
 metadata version is "1.0.0"
 metadata author is "LiveCode"
 metadata title is "Mac Native Single-line Field"
+metadata os is "mac"
 metadata svgicon is "m 0.4112036,8.147941 c -0.331,0 -0.5996094,0.2676561 -0.5996094,0.5976561 0,0.331 0.2686093,0.599609 0.5996094,0.599609 0.33,10e-7 0.5986093,-0.268609 0.5996093,-0.599609 1e-7,-0.33 -0.2696093,-0.5976561 -0.5996093,-0.5976561 z M 1.3623728,1.3471597 c 0.202,0.008 0.7707688,0.080281 1.1347656,0.6132813 -0.028,0.019 -0.6779219,0.3956406 -0.6699219,1.1816406 0.009,0.938 0.8220313,1.2508594 0.8320313,1.2558594 -0.008,0.021 -0.1296882,0.4448126 -0.4296876,0.8828125 -0.2579999,0.3770001 -0.5262187,0.7537187 -0.9492187,0.7617187 -0.415,0.008 -0.5474375,-0.2460937 -1.0234375,-0.2460937 -0.475,0 -0.6245782,0.2379062 -1.0175781,0.2539062 -0.4080001,0.015 -0.7185154,-0.4081561 -0.9785159,-0.7851562 -0.533,-0.7709999 -0.941531,-2.1769532 -0.394531,-3.1269532 0.272,-0.471 0.7581563,-0.7693437 1.2851562,-0.7773437 0.4,-0.007 0.7794376,0.2695313 1.0234376,0.2695313 0.246,0 0.7054999,-0.3322032 1.1875,-0.2832032 z m 0.00586,-1.50195311 c 0.04,0.364 -0.1062656,0.7291875 -0.3222656,0.9921875 -0.217,0.26200001 -0.5709219,0.46450001 -0.9199219,0.43750001 -0.047,-0.35600001 0.128125,-0.72598441 0.328125,-0.95898441 0.225,-0.262 0.6020625,-0.4577031 0.9140625,-0.4707031 z m -7.8105468,-1.12890629 0,9.1074219 13.7070312,0 0,-9.1074219 z m -0.07617,-1.1425781 13.8593751,0 c 0.588,0 1.0664531,0.4812187 1.0644531,1.0742188 l 0,9.8437501 c 0,0.594 -0.4764531,1.074219 -1.0644531,1.074219 l -5.3203125,0 c 0,0 0.5936093,2.1484369 3.2246093,2.1484369 l 0,0.537109 -3.4921874,0 -4.5683598,0 -1.8789057,0 0,-0.537109 c 2.5589997,0 3.4921873,-2.1484369 3.4921873,-2.1484369 l -5.3164063,0 c -0.589,0 -1.066406,-0.480219 -1.066406,-1.074219 l 0,-9.8437501 c 0,-0.593 0.477406,-1.0742188 1.066406,-1.0742188 z M -19.375,-4.8105469 c -1.108001,0 -2,0.892 -2,2 l 0,15.4453129 c 0,1.108 0.891999,2 2,2 l 27.5722656,0 c 1.108,0 2.0000004,-0.892 2.0000004,-2 l 0,-15.4453129 c 0,-1.108 -0.8920004,-2 -2.0000004,-2 l -27.5722656,0 z m 0.753906,2.5605469 4.570313,0 0,1.5 -1.570313,0 0,11 1.570313,0 0,1.5 -4.570313,0 0,-1.5 1.53125,0 0,-11 -1.53125,0 0,-1.5 z"
 
 private variable mTextFieldView as optional ObjcObject
diff --git a/ide-support/revdocsparser.livecodescript b/ide-support/revdocsparser.livecodescript
@@ -437,7 +437,7 @@ on revDocsExtractDocBlocks pText, pSource, @rAPIData, @rLibraryData
    put false into tInEntry
    
    local tFirstWord, tEntryData, tTrimLine
-   local tComment, tData
+   local tComment, tCommentOffset, tData
    local tHandlerData, tPhraseData
    
    local tLibraryData, tAPIData
@@ -486,6 +486,23 @@ on revDocsExtractDocBlocks pText, pSource, @rAPIData, @rLibraryData
                put true into tEntryEnded
                put true into tEntryData["need_docs"]
                break
+            case "metadata"
+               # Handle library metadata as a special case
+               local tSecondWord
+               put word 2 of tLine into tSecondWord
+               if tSecondWord is among the items of "author,os,platforms,version" then
+                  put tSecondWord & ":" && value(word 4 of tLine) into tLine
+                  put Offset(lf & "Name:", tLibraryData["comments"]) into tCommentOffset
+                  if tCommentOffset is 0 then 
+                     put tLine & lf after tLibraryData["comments"]
+                  else
+                     # insert metadata above property definitions
+                     put lf & tline & lf before char tCommentOffset of tLibraryData["comments"]
+                  end if
+               end if
+               # Metadata is not treated as an entry
+               put false into tInEntry
+               break
             case "handler"
                put "handler" into tEntryData["type"]
                # Handler is private by default, so don't document
@@ -589,7 +606,6 @@ on revDocsExtractDocBlocks pText, pSource, @rAPIData, @rLibraryData
                   
                   # Discard any previous comments
                   put empty into tComment
-                  local tCommentOffset
                   put true into tInComment
                   put offset("/**", tLine) into tCommentOffset
                   put char (tCommentOffset + 3) to -1 of tLine into tLine
@@ -1314,9 +1330,6 @@ function revDocsParseElements pExtractedA, pBlocksA, pFilename
       if tParsedA[tItem] is empty then
          put pBlocksA[tItem] into tParsedA[tItem]
       end if
-      if tParsedA["display name"] is empty then
-         put tParsedA["name"] into tParsedA["display name"]
-      end if
    end repeat
    
    if tParsedA["display name"] is empty then
@@ -1426,9 +1439,9 @@ end revDocsGroupElements
 
 -- Elements that when defined at the library level
 -- apply to all docs in the api
-constant kInheritedElements = "author,version,associations,tags,requires,uses"
+constant kInheritedElements = "author,version,associations,tags,requires,uses,os,platforms"
 -- Elements that should be in the library's actual docs entry
-constant kLibraryEntryElements = "name,display name,summary,description,type,example,references,edition"
+constant kLibraryEntryElements = "name,display name,summary,description,type,example,references,edition,os,platforms,associations"
 function revDocsParseDocText pText, pFilename, pDefaults, pOverrides
    local tElementsA
    put revDocsExtractElements(pText) into tElementsA
@@ -1448,21 +1461,23 @@ function revDocsParseDocText pText, pFilename, pDefaults, pOverrides
       switch it
          case "Name"
          case empty
-            exit repeat     
+            exit repeat
          case "Library"
             put tElementsA[tStartNum]["content"] into tParsedA["library"]
             add 1 to tStartNum
             break
-         case "Title"  
+         case "Title"
          case "Summary"
          case "Description"
          case "Author"
          case "Type"
          case "Version"
-         case "Requires" 
-         case "Uses"    
-         case "SVGIcon"   
+         case "Requires"
+         case "Uses"
+         case "SVGIcon"
          case "Summary"
+         case "OS"
+         case "Platforms"
             // Add top-level tags to all library entries
          case "Tags"
             // Library entries can have examples
diff --git a/ide-support/revsblibrary.livecodescript b/ide-support/revsblibrary.livecodescript
@@ -1636,6 +1636,43 @@ function revSBAllMobilePlatforms
          kAndroidPlatform
 end revSBAllMobilePlatforms
 
+function revSBNormalizePlatforms pOS, pPlatforms
+   local tPlatformList
+   if pOS is empty then
+      if pPlatforms contains "mobile" then
+         put revSBAllMobilePlatforms() & comma after tPlatformList
+      end if
+      if pPlatforms contains "desktop" or pPlatforms contains "server" then
+         put revSBAllDesktopPlatforms() & comma after tPlatformList
+      end if
+   else
+      if pOS contains "mac" then
+         put kMacPlatform & comma after tPlatformList
+      end if
+      if pOS contains "win" then
+         put kWindowsPlatform & comma after tPlatformList
+      end if
+      if pOS contains "linux" then
+         put kLinuxPlatform & comma after tPlatformList
+      end if
+      if pOS contains "ios" then
+         put kiOSPlatform & comma after tPlatformList
+      end if
+      if pOS contains "android" then
+         put kAndroidPlatform & comma after tPlatformList
+      end if
+      if pOS contains "html5" then
+         put kEmscriptenPlatform & comma after tPlatformList
+      end if
+   end if
+   if tPlatformList is empty then
+      put revSBAllPlatforms() into tPlatformList
+   else
+      delete char -1 of tPlatformList
+   end if
+   return tPlatformList
+end revSBNormalizePlatforms
+
 private command addToList pElement, @xArray
    put pElement into xArray[the number of elements in xArray + 1]
 end addToList
@@ -1653,9 +1690,15 @@ private function revSBAvailableExtensions pType
    local tExtensions, tInclusions
    put revIDEExtensions(pType, "installed") into tExtensions
    repeat for each key tID in tExtensions
-      local tExtension
-      -- LCB extensions are available on all platforms
-      put revSBAllPlatforms() into tExtension["platforms"]
+      local tExtension, tOS, tPlatforms
+      put tExtensions[tID]["os"] into tOS
+      put tExtensions[tID]["platforms"] into tPlatforms
+      if tOS is empty and tPlatforms is empty then
+         -- LCB extensions are available on all platforms by default
+         put revSBAllPlatforms() into tExtension["platforms"]
+      else
+         put revSBNormalizePlatforms(tOS, tPlatforms) into tExtension["platforms"]
+      end if
       put pType into tExtension["type"]
       put tExtensions[tID]["title"] into tExtension["title"]
       put tID into tExtension["id"]
diff --git a/toolchain/lc-compile/src/generate.g b/toolchain/lc-compile/src/generate.g
