FileManager: allow case sensitive file search (#7956)

Bump base for cre.cpp cleanup and utf8proc FFI.
Add a checkbutton for case sensitive search in FileBrowser,
and use Utf8Proc.lowercase() for case insensitive search.
Also use it in ReaderUserHyph as a replacement for
crengine getLowercasedWord().

frontend/apps/filemanager/filemanagerfilesearcher.lua

@@ -1,12 +1,17 @@
+local CheckButton = require("ui/widget/checkbutton")
 local CenterContainer = require("ui/widget/container/centercontainer")
 local DocumentRegistry = require("document/documentregistry")
 local Font = require("ui/font")
+local HorizontalGroup = require("ui/widget/horizontalgroup")
+local HorizontalSpan = require("ui/widget/horizontalspan")
 local InfoMessage = require("ui/widget/infomessage")
 local InputContainer = require("ui/widget/container/inputcontainer")
 local InputDialog = require("ui/widget/inputdialog")
 local Menu = require("ui/widget/menu")
 local Size = require("ui/size")
 local UIManager = require("ui/uimanager")
+local Utf8Proc = require("ffi/utf8proc")
+local VerticalGroup = require("ui/widget/verticalgroup")
 local lfs = require("libs/libkoreader-lfs")
 local BaseUtil = require("ffi/util")
 local util = require("util")
@@ -73,9 +78,24 @@ function FileSearcher:setSearchResults()
     if keywords == "*" then -- one * to show all files
         self.results = self.files
     else
+        if not self.case_sensitive then
+            keywords = Utf8Proc.lowercase(keywords)
+        end
+        -- replace '.' with '%.'
+        keywords = keywords:gsub("%.","%%%.")
+        -- replace '*' with '.*'
+        keywords = keywords:gsub("%*","%.%*")
+        -- replace '?' with '.'
+        keywords = keywords:gsub("%?","%.")
         for __,f in pairs(self.files) do
-            if string.find(string.lower(f.name), string.lower(keywords)) and string.sub(f.name,-4) ~= ".sdr" then
-                table.insert(self.results, f)
+            if self.case_sensitive then
+                if string.find(f.name, keywords) and string.sub(f.name,-4) ~= ".sdr" then
+                    table.insert(self.results, f)
+                end
+            else
+                if string.find(Utf8Proc.lowercase(f.name), keywords) and string.sub(f.name,-4) ~= ".sdr" then
+                    table.insert(self.results, f)
+                end
             end
         end
     end
@@ -138,6 +158,35 @@ function FileSearcher:onShowFileSearch()
             },
         },
     }
+    -- checkbox
+    self.check_button_case = CheckButton:new{
+        text = _("Case sensitive"),
+        checked = self.case_sensitive,
+        parent = self.search_dialog,
+        callback = function()
+            if not self.check_button_case.checked then
+                self.check_button_case:check()
+                self.case_sensitive = true
+            else
+                self.check_button_case:unCheck()
+                self.case_sensitive = false
+            end
+        end,
+    }
+
+    local checkbox_shift = math.floor((self.search_dialog.width - self.search_dialog._input_widget.width) / 2 + 0.5)
+    local check_buttons = HorizontalGroup:new{
+        HorizontalSpan:new{width = checkbox_shift},
+        VerticalGroup:new{
+            align = "left",
+            self.check_button_case,
+        },
+    }
+
+    -- insert check buttons before the regular buttons
+    local nb_elements = #self.search_dialog.dialog_frame[1]
+    table.insert(self.search_dialog.dialog_frame[1], nb_elements-1, check_buttons)
+
     UIManager:show(self.search_dialog)
     self.search_dialog:onShowKeyboard()
 end

frontend/apps/filemanager/filemanagermenu.lua

@@ -662,8 +662,8 @@ To:
         text = _("File search"),
         help_text = _([[Search a book by filename in the current or home folder and its subfolders.
 
+Wildcards for one '?' or more '*' characters can be used.
 A search for '*' will show all files.
-Search string supports Lua patterns.
 
 Tap a book in the search results to open it.]]),
         callback = function()

frontend/apps/reader/modules/readeruserhyph.lua

@@ -4,6 +4,7 @@ local FFIUtil = require("ffi/util")
 local InfoMessage = require("ui/widget/infomessage")
 local InputDialog = require("ui/widget/inputdialog")
 local UIManager = require("ui/uimanager")
+local Utf8Proc = require("ffi/utf8proc")
 local WidgetContainer = require("ui/widget/container/widgetcontainer")
 local lfs = require("libs/libkoreader-lfs")
 local logger = require("logger")
@@ -29,7 +30,8 @@ end
 -- Unload is done automatically when a new dictionary is loaded.
 function ReaderUserHyph:loadDictionary(name, reload)
     if G_reader_settings:isTrue("hyph_user_dict") and lfs.attributes(name, "mode") == "file" then
-        local ret = self.ui.document:setUserHyphenationDict(name, reload)
+        logger.dbg("set user hyphenation dict", name, reload)
+        local ret = cre.setUserHyphenationDict(name, reload)
         -- this should only happen, if a user edits a dictionary by hand or the user messed
         -- with the dictionary file by hand. -> Warning and disable.
         if ret == self.USER_DICT_ERROR_NOT_SORTED then
@@ -45,7 +47,8 @@ function ReaderUserHyph:loadDictionary(name, reload)
             logger.warn("UserHyph: Dictionary " .. name .. " has corrupted entries.")
         end
     else
-        self.ui.document:setUserHyphenationDict() -- clear crengine user hyph dict
+        logger.dbg("reset user hyphenation dict")
+        cre.setUserHyphenationDict("", true) -- clear crengine user hyph dict
     end
 end
 
@@ -101,7 +104,7 @@ function ReaderUserHyph:checkHyphenation(suggestion, word)
     end
 
     suggestion = suggestion:gsub("-","")
-    if self.ui.document:getLowercasedWord(suggestion) == self.ui.document:getLowercasedWord(word) then
+    if Utf8Proc.lowercase(suggestion) == Utf8Proc.lowercase(word) then
         return true -- characters match (case insensitive)
     end
     return false
@@ -117,22 +120,22 @@ function ReaderUserHyph:updateDictionary(word, hyphenation)
         return
     end
 
-    local word_lower = self.ui.document:getLowercasedWord(word)
+    local word_lower = Utf8Proc.lowercase(word)
     local line
 
     local dict = io.open(dict_file, "r")
     if dict then
         line = dict:read()
         --search entry
-        while line and self.ui.document:getLowercasedWord(line:sub(1, line:find(";") - 1)) < word_lower do
+        while line and Utf8Proc.lowercase(line:sub(1, line:find(";") - 1)) < word_lower do
             new_dict:write(line .. "\n")
             line = dict:read()
         end
 
         -- last word = nil if EOF, else last_word=word if found in file, else last_word is word after the new entry
         if line then
-            local last_word = self.ui.document:getLowercasedWord(line:sub(1, line:find(";") - 1))
-            if last_word == self.ui.document:getLowercasedWord(word) then
+            local last_word = Utf8Proc.lowercase(line:sub(1, line:find(";") - 1))
+            if last_word == Utf8Proc.lowercase(word) then
                 line = nil -- word found
             end
         else
@@ -172,14 +175,14 @@ function ReaderUserHyph:modifyUserEntry(word)
 
     if not self.ui.document then return end
 
-    local suggested_hyphenation = self.ui.document:getHyphenationForWord(word)
+    local suggested_hyphenation = cre.getHyphenationForWord(word)
 
     local input_dialog
     input_dialog = InputDialog:new{
         title = T(_("Hyphenate: %1"), word),
         description = _("Add hyphenation positions with hyphens ('-') or spaces (' ')."),
         input = suggested_hyphenation,
-        old_hyph_lowercase = self.ui.document:getLowercasedWord(suggested_hyphenation),
+        old_hyph_lowercase = Utf8Proc.lowercase(suggested_hyphenation),
         input_type = "string",
         buttons = {
             {
@@ -207,7 +210,7 @@ function ReaderUserHyph:modifyUserEntry(word)
 
                         if self:checkHyphenation(new_suggestion, word) then
                             -- don't save if no changes
-                            if self.ui.document:getLowercasedWord(new_suggestion) ~= input_dialog.old_hyph_lowercase then
+                            if Utf8Proc.lowercase(new_suggestion) ~= input_dialog.old_hyph_lowercase then
                                 self:updateDictionary(word, new_suggestion)
                             end
                             UIManager:close(input_dialog)

frontend/document/credocument.lua

@@ -980,25 +980,6 @@ function CreDocument:setTextHyphenationSoftHyphensOnly(toggle)
     self._document:setStringProperty("crengine.textlang.hyphenation.soft.hyphens.only", toggle and 1 or 0)
 end
 
-function CreDocument:setUserHyphenationDict(dict, reload)
-    logger.dbg("CreDocument: set textlang hyphenation dict", dict or "none")
-    return self._document:setUserHyphenationDict(dict or "", reload or false)
-end
-
-function CreDocument:getHyphenationForWord(word)
-    if word then
-        return self._document:getHyphenationForWord(word)
-    end
-    return word
-end
-
-function CreDocument:getLowercasedWord(word)
-    if word then
-        return self._document:getLowercasedWord(word)
-    end
-    return word
-end
-
 function CreDocument:setTextHyphenationForceAlgorithmic(toggle)
     logger.dbg("CreDocument: set textlang hyphenation force algorithmic", toggle)
     self._document:setStringProperty("crengine.textlang.hyphenation.force.algorithmic", toggle and 1 or 0)