diff options
Diffstat (limited to 'lib/utils.coffee')
| -rw-r--r-- | lib/utils.coffee | 30 |
1 files changed, 23 insertions, 7 deletions
diff --git a/lib/utils.coffee b/lib/utils.coffee index b7f8731a..661f7e84 100644 --- a/lib/utils.coffee +++ b/lib/utils.coffee @@ -26,11 +26,10 @@ Utils = -> id += 1 hasChromePrefix: do -> - chromePrefixes = [ "about:", "view-source:", "extension:", "chrome-extension:", "data:" ] + chromePrefixes = [ "about:", "view-source:", "extension:", "chrome-extension:", "data:", "javascript:" ] (url) -> - if 0 < url.indexOf ":" - for prefix in chromePrefixes - return true if url.startsWith prefix + for prefix in chromePrefixes + return true if url.startsWith prefix false hasFullUrlPrefix: do -> @@ -88,11 +87,17 @@ Utils = # Fallback: no URL return false + # Map a search query to its URL encoded form. The query may be either a string or an array of strings. + # E.g. "BBC Sport" -> "BBC+Sport". + createSearchQuery: (query) -> + query = query.split(/\s+/) if typeof(query) == "string" + query.map(encodeURIComponent).join "+" + # Creates a search URL from the given :query. createSearchUrl: (query) -> - # it would be better to pull the default search engine from chrome itself, - # but it is not clear if/how that is possible - Settings.get("searchUrl") + encodeURIComponent(query) + # It would be better to pull the default search engine from chrome itself. However, unfortunately chrome + # does not provide an API for doing so. + Settings.get("searchUrl") + @createSearchQuery query # Converts :string into a Google search if it's not already a URL. We don't bother with escaping characters # as Chrome will do that for us. @@ -110,6 +115,12 @@ Utils = # detects both literals and dynamically created strings isString: (obj) -> typeof obj == 'string' or obj instanceof String + # Transform "zjkjkabz" into "abjkz". + distinctCharacters: (str) -> + unique = "" + for char in str.split("").sort() + unique += char unless 0 <= unique.indexOf char + unique # Compares two version strings (e.g. "1.1" and "1.5") and returns # -1 if versionA is < versionB, 0 if they're equal, and 1 if versionA is > versionB. @@ -125,6 +136,11 @@ Utils = return 1 0 + # True if the current Chrome version is at least the required version. + haveChromeVersion: (required) -> + chromeVersion = navigator.appVersion.match(/Chrome\/(.*?) /)?[1] + chromeVersion and 0 <= Utils.compareVersions chromeVersion, required + # Zip two (or more) arrays: # - Utils.zip([ [a,b], [1,2] ]) returns [ [a,1], [b,2] ] # - Length of result is `arrays[0].length`. |