&Anders.Lund; &Anders.Lund.mail; &Dominik.Haumann; &Dominik.Haumann.mail; The Comment and Uncomment commands, available from the Tools menu allow you to add or remove comment markers to the selection, or the current line if no text is selected, if comments are supported by the format of the text you are editing. The rules for how commenting is done are defined in the syntax definitions, so if syntax highlighting is not used, commenting/uncommenting is not possible. Some formats define single line comment markers, some multiline markers and some both. If multiline markers are not available, commenting out a selection that does not fully include its last line is not possible. If a single line marker is available, commenting single lines is preferred where applicable, as this helps to avoid problems with nested comments. When removing comment markers, no uncommented text should be selected. When removing multiline comment markers from a selection, any whitespace outside the comment markers is ignored. comment To place comment markers, use the ToolsComment menu item or the related keyboard shortcut sequence, default is &Ctrl;D. uncomment To remove comment markers, use the ToolsUncomment menu item or the related keyboard shortcut, default is &Ctrl;&Shift;D. &kappname;'s editor component has an internal command line, allowing you to perform various actions from a minimal GUI. The command line is a text entry in the bottom of the editor area, to show it select ViewSwitch to Command Line or use the shortcut (default is F7). The editor provides a set of commands as documented below, and additional commands can be provided by plugins. To execute a command, type the command then press the return key. The command line will indicate whether it succeeded and possibly display a message. If you entered the command line by pressing F7 it will automatically hide after a few seconds. To clear the message and enter a new command, press F7 again. The command line has a built-in help system, issue the command help to get started. To see a list of all available commands issue help list, to view help for a specific command, do help command. The command line has a built in history, so you can reuse commands already typed. To navigate the history, use the Up and Down keys. When showing historical commands, the argument part of the command will be selected, allowing you to easily overwrite the arguments. BOOLEAN This is used with commands that turns things on or off. Legal values are on, off, true, false, 1 or 0 INTEGER An integer number STRING A string w Save the current document. wa Save all currently open documents. q Close the current document. qa Close all open documents. wq Save and close the current document. wqa Save and close all currently documents. x Save and close the current document only if it has changed. x Save and close all currently open documents only if they have changed. bp Go to the previous document in the documents list. bn Go to the next document in the documents list. new Open a new document in horizontal split view. vnew Open a new document in vertical split view. e Reload the current document if it has changed on disk. enew Edit a new document. print Open the Print dialog to print the current document. These commands are provided by the editor component, and allows you to configure the active document and view only. This is handy if you want to use a setting different from the default settings, for example for indentation. set-tab-widthINTEGER width Sets the tab width to the number width set-indent-widthINTEGER width Sets the indentation width to the number width. Used only if you are indenting with spaces. set-word-wrap-columnINTEGER width Sets the line width for hard wrapping to width. This is used if you are having your text wrapped automatically. set-icon-borderBOOLEAN enable Sets the visibility of the icon border. set-folding-markersBOOLEAN enable Sets the visibility of the folding markers pane. set-line-numbersBOOLEAN enable Sets the visibility of the line numbers pane. set-replace-tabsBOOLEAN enable If enabled, tabs are replaced with spaces as you type. set-remove-trailing-spaceBOOLEAN enable If enabled, trailing whitespace are removed whenever the cursor leaves a line. set-show-tabsBOOLEAN enable If enabled, TAB characters and trailing whitespace will be visualized by a small dot. set-show-indentBOOLEAN enable If enabled, indentation will be visualized by a vertical dotted line. set-indent-spacesBOOLEAN enable If enabled, the editor will indent with indent-width spaces for each indentation level, rather than with one TAB character. set-mixed-indentBOOLEAN enable If enabled, &kappname; will use a mix of TAB and spaces for indentation. Each indentation level will be indent-width wide, and more indentation levels will be optimized to use as many TAB characters as possible. When executed, this command will additionally set space indentation enabled, and if the indent width is unspecified it will be set to half of the tab-width for the document at the time of execution. set-word-wrapBOOLEAN enable Enables dynamic word wrap according to enable set-replace-tabs-saveBOOLEAN enable When enabled, tabs will be replaced with whitespace whenever the document is saved. set-remove-trailing-space-saveBOOLEAN enable When enabled, trailing space will be removed from each line whenever the document is saved. set-indent-modeSTRING name Sets the autoindentation mode to name. If name is not known, the mode is set to 'none'. Valid modes are 'none', 'normal', 'cstyle', 'haskell', 'lilypond', 'lisp', 'python', 'ruby' and 'xml'. set-auto-identBOOLEAN name Enable or disable autoindentation. set-highlightSTRING highlight Sets the syntax highlighting system for the document. The argument must be a valid highlight name, as seen in the ToolsHighlighting menu. This command provides an autocompletion list for its argument. reload-scripts Reload all JavaScript scripts used by Kate, including indenters and command line scripts. set-wrap-cursorBOOLEAN enable Enable or disable Wrap cursor. set-modeBOOLEAN enable Choose the filetype scheme for the current document. nn[oremap]STRING original STRING mapped Map the key sequence original to mapped. These commands modify the current document. indent Indents the selected lines or the current line. unindent Unindents the selected lines or current line. cleanindent Cleans up the indentation of the selected lines or current line according to the indentation settings in the document. comment Inserts comment markers to make the selection or selected lines or current line a comment according to the text format as defined by the syntax highlight definition for the document. uncomment Removes comment markers from the selection or selected lines or current line according to the text format as defined by the syntax highlight definition for the document. kill-line Deletes the current line. replace STRING pattern STRING replacement Replaces text matching pattern with replacement. If you want to include whitespace in the pattern, you must quote both the pattern and replacement with single or double quotes. If the arguments are unquoted, the first word is used as pattern and the rest for replacement. If replacement is empty, each occurrence of pattern is removed. You can set flags to configure the search by adding a colon, followed by one or more letters each representing a configuration, giving the form replace:options pattern replacement. Available options are: b Search backwards. c Search from cursor position. e Search in the selection only. r Do regular expression search. If set, you may use \N where N is a number to represent captures in the replacement string. s Do case sensitive search. p Prompt for permission to replace the next occurrence. w Match whole words only. dateSTRING format Inserts a date/time string as defined by the specified format, or the format yyyy-MM-dd hh:mm:ss if none is specified. The following translations are done when interpreting format: dThe day as number without a leading zero (1-31). ddThe day as number with a leading zero (01-31). dddThe abbreviated localized day name (e.g. 'Mon'..'Sun'). ddddThe long localized day name (e.g. 'Monday'..'Sunday'). MThe month as number without a leading zero (1-12). MMThe month as number with a leading zero (01-12). MMMThe abbreviated localized month name (e.g. 'Jan'..'Dec'). yyThe year as two digit number (00-99). yyyyThe year as four digit number (1752-8000). hThe hour without a leading zero (0..23 or 1..12 if AM/PM display). hhThe hour with a leading zero (00..23 or 01..12 if AM/PM display). mThe minute without a leading zero (0..59). mmThe minute with a leading zero (00..59). sThe second without a leading zero (0..59). ssThe second with a leading zero (00..59). zThe milliseconds without leading zeroes (0..999). zzzThe milliseconds with leading zeroes (000..999). APUse AM/PM display. AP will be replaced by either "AM" or "PM". apUse am/pm display. ap will be replaced by either "am" or "pm". charSTRING identifier This command allows you to insert literal characters by their numerical identifier, in decimal, octal or hexadecimal form. To use it launch the Editing Command dialog and type char: [number] in the entry box, then hit OK. Input: char:234 Output: ê Input: char:0x1234 Output: ሴ replace, sed style search, sed style s///[ig] %s///[ig] This command does a sed-like search/replace operation on the current line, or on the whole file (%s///). In short, the text is searched for text matching the search pattern, the regular expression between the first and the second slash, and when a match is found, the matching part of the text is replaced with the expression between the middle and last part of the string. Parentheses in the search pattern create back references, that is the command remembers which part of the match matched in the parentheses; these strings can be reused in the replace pattern, referred to as \1 for the first set of parentheses, \2 for the second and so on. To search for a literal ( or ), you need to escape it using a backslash character: \(\) If you put an i at the end of the expression, the matching will be case insensitive. If you put a g at the end, all occurrences of the pattern will be replaced, otherwise only the first occurrence is replaced. Your friendly compiler just stopped, telling you that the class myClass mentioned in line 3902 in your source file is not defined. "Buckle!" you think, it is of course MyClass. You go to line 3902, and instead of trying to find the word in the text, you launch the Editing Command Dialog, enter s/myclass/MyClass/i, hit the OK button, save the file and compile – successfully without the error. Imagine that you have a file, in which you mention a Miss Jensen several times, when someone comes in and tells you that she just got married to Mr Jones. You want, of course, to replace each and every occurrence of Miss Jensen with Ms Jones. Enter the command line and issue the command %s/Miss Jensen/Ms Jones/ and hit return, you are done. This example makes use of back references as well as a character class (if you do not know what that is, please refer to the related documentation mentioned below). Suppose you have the following line: void MyClass::DoStringOps( String &foo, String &bar String *p, int &a, int &b ) Now you realize that this is not nice code, and decide that you want to use the const keyword for all address of arguments, those characterized by the & operator in front of the argument name. You would also like to simplify the white space, so that there is only 1 whitespace character between each word. Launch the Editing Command Dialog, and enter: s/\s+(\w+)\s+(&)/ const \1 \2/g and hit the OK button. The g at the end of the expression makes the regular expression recompile for each match to save the backreferences. Output: void MyClass::DoStringOps( const String &foo, const String &bar String *p, const int &a, const int &b ) Mission completed! Now, what happened? Well, we looked for some white space (\s+) followed by one or more alphabetic characters (\w+) followed by some more whitespace (\s+) followed by an ampersand, and in the process saved the alphabetic chunk and the ampersand for reuse in the replace operation. Then we replaced the matching part of our line with one whitespace followed by const followed by one whitespace followed by our saved alphabetical chunk (\1) followed by one whitespace followed by our saved ampersand (\2) Now in some cases the alphabetical chunk was String, in some int, so using the character class \w and the + quantifier proved a valuable asset. sort Sorts the selected text or entire document. natsort Sort the selected lines or entire document naturally. sort(a10, a1, a2) results in a1, a10, a2 natsort(a10, a1, a2) results in a1, a2, a10 moveLinesDown Move selected lines down. moveLinesUp Move selected lines up. uniq Remove duplicated lines from the selected text or the whole document. rtrim Remove trailing space from the selected text or the whole document. ltrim Remove leading space from the selected text or the whole document. joinSTRING separator Join selected lines or whole document. Optionally takes a parameter defining a separator, for example: join ', ' rmblank Remove all blank spaces from the selected text or the whole document. unwrap Unwrap the selected text or the whole document. eachSTRING script Given a JavaScript function as an argument, call that for the list of selected lines and replace them with the return value of that callback. each 'function(lines){return lines.join(", ")}' Or, more briefly: each 'lines.join(", ")' filterSTRING script Given a JavaScript function as an argument, call that for the list of selected lines and remove those where the callback returns false. filter 'function(1){return 1.length > 0;}' Or, more briefly: filter 'line.length > 0' mapSTRING script Given a JavaScript function as an argument, call that for the list of selected lines and replace the line with the value of the callback. map 'function(line){return line.replace(/^s+/,"");}' Or, more briefly: map 'line.replace(/^s+/,"")' duplicateLinesUp Duplicate the selected lines above the current selection. duplicateLinesDown Duplicate the selected lines below the current selection. gotoINT line This command navigates to the specified line. grep STRING pattern Search the document for the regular expression pattern. For more information, see findSTRING pattern This command navigates to the first occurrence of pattern according to the configuration. Following occurrences can be found using EditFind Next (the default shortcut is F3). The find command can be configured by appending a colon followed by one or more options, the form is find:options pattern. The following options are supported: b Search backwards. c Search from cursor position. e Search in the selection only. r Do regular expression search. If set, you may use \N where N is a number to represent captures in the replacement string. s Do case sensitive search. w Match whole words only. ifindSTRING pattern This command provides as-you-type searching. You can configure the behavior of the search by appending a colon followed by one or more options, like this: ifind:options pattern. Allowed options are b Search backwards. r Do regular expression search. s Do case sensitive search. c Search from cursor position. Code folding allows you to hide parts of a document in the editor, making it easier to overview large documents. In &kappname; the foldable regions are calculated using rules defined in the syntax highlight definitions, and therefore it is only available in some formats - typically program source code, XML markup and similar. Most highlight definitions supporting code folding also lets you manually define foldable regions, typically using the BEGIN and END keywords. To use the code folding feature, activate the folding markers using ViewShow Folding Markers menu item if they are not already visible. The Folding Markers Pane in the left side of the screen displays a graphical view of the foldable regions, with triangle symbols to indicate the possible operation on a given region: a top down triangle means that the region is expanded, clicking it will collapse the region and a right pointing triangle will be displayed instead. Eleven commands are provided to manipulate the state of folding regions, see the menu documentation. The folded lines are remembered when a file is closed, so when you reopen the file the folded nodes will still be folded. This applies to reload operations as well. If you do not want to use the code folding feature, you can disable the Show folding markers (if available) option in the Appearance page of the editor configuration. Since &kappname; 3.4 in KDE 4.4 the &kappname; editor component is easily extensible by writing scripts. The scripting language is ECMAScript (widely known as JavaScript). &kappname; supports two kinds of scripts: indentation and command line scripts. Indentation scripts - also referred as indenters - automatically indent the source code while typing text. As example, after hitting the return-key code the indentation level often increases. The following sections describe step by step how to create the skeleton for a simple indenter. As first step, create a new *.js file called e.g. javascript.js in the local home folder $KDEHOME/share/apps/katepart/script. The header of the file javascript.js is embedded in a comment and is of the following form /* kate-script * name: JavaScript * author: Example Name <example.name@some.address.org> * license: BSD * revision: 1 * kate-version: 3.4 * type: indentation * required-syntax-style: javascript * indent-languages: javascript * priority: 0 * i18n-catalog: mycatalog * * A line without colon ':' stops header parsing. That is, you can add optional * text here such as a detailed license. */ Each entry is explained in detail now: kate-script [required]: This text string has to appear in the first line of the *.js file, otherwise &kappname; skips the script. name [required]: This is the indenter name that appears in the menu ToolsIndentation and in the configuration dialog. author [optional]: The author's name and contact information. license [optional]: Short form of the license, such as BSD or LGPLv3. revision [required]: The revision of the script. This number should be increased whenever the script is modified. kate-version [required]: Minimal required &kappname; version. type [required]: The type must be indentation, otherwise &kappname; skips this script. required-syntax-style [optional]: Comma separated list of required syntax highlighting styles. This is important for indenters that rely on specific highlight information in the document. If a required syntax style is specified, the indenter is available only when the appropriate highlighter is active. This prevents undefined behavior caused by using the indenter without the expected highlighting schema. For instance, the Ruby indenter makes use of this in the files ruby.js and ruby.xml. indent-languages [optional]: Comma separated list of syntax styles the indenter can indent correctly, e.g.: c++, java. priority [optional]: If several indenters are suited for a certain highlighted file, the priority decides which indenter is chosen as default indenter. i18n-catalog [optional]: Additional message catalog (po file) loaded for translation of 3rd-party indenters. &kappname; reads all pairs of the form key:value until it cannot find a colon anymore. This implies that the header can contain arbitrary text such as a license as shown in the example. Having specified the header this section explains how the indentation scripting itself works. The basic skeleton of the body looks like this: triggerCharacters = "{}/:;"; function indent(line, indentWidth, ch) { // called for each newline (ch == '\n') and all characters specified in // the global variable triggerCharacters. When calling ToolsAlign // the variable ch is empty, i.e. ch == ''. // // see also: Scripting API return -2; } The function indent() has three parameters: line: the line that has to be indented indentWidth: the indentation width in amount of spaces ch: either a newline character (ch == '\n'), the trigger character specified in triggerCharacters or empty if the user invoked the action ToolsAlign. The return value of the indent() function specifies how the line will be indented. If the return value is a simple integer number, it is interpreted as follows: return value -2: do nothing return value -1: keep indentation (searches for previous non-blank line) return value 0: numbers >= 0 specify the indentation depth in spaces Alternatively, an array of two elements can be returned: return [ indent, align ]; In this case, the first element is the indentation depth like above with the same meaning of the special values. However, the second element is an absolute value representing a column for alignment. If this value is higher than the indent value, the difference represents a number of spaces to be added after the indentation of the first parameter. Otherwise, the second number is ignored. Using tabs and spaces for indentation is often referred to as mixed mode. Consider the following example: Assume using tabs to indent, and tab width is set to 4. Here, <tab> represents a tab and '.' a space: 1: <tab><tab>foobar("hello", 2: <tab><tab>......."world"); When indenting line 2, the indent() function returns [8, 15]. As result, two tabs are inserted to indent to column 8, and 7 spaces are added to align the second parameter under the first, so that it stays aligned if the file is viewed with a different tab width. A default KDE installation ships &kappname; with several indenters. The corresponding JavaScript source code can be found in $KDEDIR/share/apps/katepart/script. Developing an indenter requires to reload the scripts to see whether the changes behave appropriately. Instead of restarting the application, simply switch to the command line and invoke the command reload-scripts. If you develop useful scripts please consider contributing to the &kappname; Project by contacting the mailing list. As it is hard to satisfy everyone's needs, &kappname; supports little helper tools for quick text manipulation through the built-in command line. For instance, the command sort is implemented as script. This section explains how to create *.js files to extend &kappname; with arbitrary helper scripts. Command line scripts are located in the same folder as indentation scripts. So as first step, create a new *.js file called myutils.js in the local home folder $KDEHOME/share/apps/katepart/script. The header of each command line script is embedded in a comment and is of the following form /* kate-script * author: Example Name <example.name@some.address.org> * license: BSD * revision: 1 * kate-version: 3.4 * type: commands * functions: sort, format-paragraph * i18n-catalog: mycatalog * * A line without colon ':' stops header parsing. That is, you can add optional * text here such as a detailed license. */ Each entry is explained in detail now: kate-script [required]: This text string has to appear in the first line of the *.js file, otherwise &kappname; skips the script. author [optional]: The author's name and contact information. license [optional]: Short form of the license, such as BSD or LGPLv3. revision [required]: The revision of the script. This number should be increased whenever the script is modified. kate-version [required]: Minimal required &kappname; version. type [required]: The type must be commands, otherwise &kappname; skips this script. functions [required]: Comma separated list of commands in the script. i18n-catalog [optional]: Additional message catalog (po file) loaded for translation of 3rd-party scripts. &kappname; reads all pairs of the form key:value until it cannot find a colon anymore. This implies that the header can contain arbitrary text such as a license as shown in the example. The value of the key functions is a comma separated list of command line commands. This means a single script contains an arbitrary amount of command line commands. Each function is available through &kappname;'s built-in command line. All functions specified in the header have to be implemented in the script. For instance, the script file from the example above needs to implement the two functions sort and format-paragraph. All functions have the following syntax: function <name>(arg1, arg2, ...) { // ... implementation, see also: Scripting API } Arguments in the command line are passed to the function as arg1, arg2, etc. In order to provide documentation for each command, simply implement the 'help' function as follows: function help(cmd) { if (cmd == "sort") { return i18n("Sort the selected text."); } else if (cmd == "...") { // ... } } Executing help sort in the command line then calls this help function with the argument cmd set to the given command, i.e. cmd == "sort". &kappname; then presents the returned text as documentation to the user. Make sure to translate the strings. In order to be able to assign shortcuts, the script needs to provide a function called action as follows: function action(cmd) { var a = new Object(); if (cmd == "sort") { a.text = i18n("Sort Selected Text"); a.icon = ""; a.category = ""; a.interactive = false; a.shortcut = ""; } else if (cmd == "moveLinesDown") { // same for next action } return a; } The parameter cmd of the function specifies the command for which a shortcut is requested. There are several fields you have to specify in the returned javascript object: a.text [required]: The text appears in the menu Tools Scripts. Make sure to use i18n for translation. a.icon [optional]: The icon appears next to the text in the menu. All KDE icon names can be used here. a.category [optional]: If a category is specified, the script appears in a submenu. Make sure to use i18n for translation. a.interactive [optional]: If the script needs user input, set this to true. a.shortcut [optional]: The shortcut given here is the default shortcut. Example: Ctrl+Alt+t. See the Qt documentation for further details. Developing a command line script requires to reload the scripts to see whether the changes behave appropriately. Instead of restarting the application, simply switch to the command line and invoke the command reload-scripts. If you develop useful scripts please consider contributing to the &kappname; Project by contacting the mailing list. The scripting API presented here is available in all scripts, i.e. indentation scripts and command line commands. Before the contents of a script is loaded, &kappname; first adds several prototypes and functions to the scripting context. This convenience API contains prototypes like text cursors and text ranges and is located in the folder $KDEDIR/share/apps/katepart/api. There, the file names of each JavaScript file conforms with the following naming scheme: <number>_<name>.js The number has two digits and the name is an arbitrary name such as myutils. Through the number &kappname; controls the execution order of the API. I.e., the file called 05_cursor.js is called before the file 10_range.js. (This is similar to the start order of the runlevel/init system in Linux). To extend the standard scripting API with own functions and prototypes simply create a new file in the KDE's local configuration folder $KDEHOME/share/apps/katepart/api and make sure it has a greater number (execution order) than the other *.js files in the global folder $KDEDIR/share/apps/katepart/api. &kappname; automatically searches in both folders for *.js files and executes them in the correct order. To extend existing prototypes like Cursor or Range, the recommended way is to not modify the global *.js files. Instead, create a *.js file in the local folder that is being executed later than the 05_cursor.js and then change the Cursor prototype in JavaScript. As &kappname; is a text editor, all the scripting API is based on cursors and ranges whenever possible. A Cursor is a simple (line, column) tuple representing a text position in the document. A Range spans text from a starting cursor position to an ending cursor position. The API is explained in detail in the next sections. Cursor(); Constructor. Returns a Cursor at position (0, 0). Example: var cursor = new Cursor(); Cursor(int line, int column); Constructor. Returns a Cursor at position (line, column). Example: var cursor = new Cursor(3, 42); Cursor(Cursor other); Copy constructor. Returns a copy of the cursor other. Example: var copy = new Cursor(other); Cursor Cursor.clone(); Returns a clone of the cursor. Example: var clone = cursor.clone(); bool Cursor.isValid(); Check whether the cursor is valid. The cursor is invalid, if line and/or column are set to -1. Example: var valid = cursor.isValid(); Cursor Cursor.invalid(); Returns an new invalid cursor located at (-1, -1). Example: var invalidCursor = cursor.invalid(); int Cursor.compareTo(Cursor other); Compares this cursor to the cursor other. Returns -1, if this cursor is located before the cursor other, 0, if both cursors equal and +1, if this cursor is located after the cursor other. bool Cursor.equals(Cursor other); Returns true, if this cursor and the cursor other are equal, otherwise false. String Cursor.toString(); Returns the cursor as a string of the form Cursor(line, column). Range(); Constructor. Calling new Range() returns a Range at (0, 0) - (0, 0). Range(Cursor start, Cursor end); Constructor. Calling new Range(start, end) returns the Range (start, end). Range(int startLine, int startColumn, int endLine, int endColumn); Constructor. Calling new Range(startLine, startColumn, endLine, endColumn) returns the Range from (startLine, startColumn) to (endLine, endColumn). Range(Range other); Copy constructor. Returns a copy of Range other. Range Range.clone(); Returns a clone of the range. Example: var clone = range.clone(); bool Range.isValid(); Returns true, if both start and end cursor are valid, otherwise false. Example: var valid = range.isValid(); bool Range.invalid(); Returns the Range from (-1, -1) to (-1, -1). bool Range.contains(Cursor cursor); Returns true, if this range contains the cursor position, otherwise false. bool Range.contains(Range other); Returns true, if this range contains the Range other, otherwise false. bool Range.containsColumn(int column); Returns true, if column is in the half open interval [start.column, end.column), otherwise false. bool Range.containsLine(int line); Returns true, if line is in the half open interval [start.line, end.line), otherwise false. bool Range.overlaps(Range other); Returns true, if this range and the range other share a common region, otherwise false. bool Range.overlapsLine(int line); Returns true, if line is in the interval [start.line, end.line], otherwise false. bool Range.overlapsColumn(int column); Returns true, if column is in the interval [start.column, end.column], otherwise false. bool Range.equals(Range other); Returns true, if this range and the Range other are equal, otherwise false. String Range.toString(); Returns the range as a string of the form Range(Cursor(line, column), Cursor(line, column)). This section lists all global functions. void debug(String text); Prints text to stdout in the console launching the application. In order to support full localization, there are several functions to translate strings in scripts, namely i18n, i18nc, i18np and i18ncp. These functions behave exactly like KDE's translation functions. The translation functions translate the wrapped strings through KDE's translation system to the language used in the application. Strings in scripts being developed in the official &kappname; sources are automatically extracted and translatable. In other words, as a &kappname; developer you do not have to bother with message extraction and translation. However, for 3rd-party scripts developed outside of KDE, you have to extract and translate the messages yourself. Along with your scripts you have to also distribute a translation catalog, that includes all translated strings. Further, your script header then must explicitly state the catalog to load by specifying i18n-catalog. void i18n(String text, arg1, ...); Translates text into the language used by the application. The arguments arg1, ..., are optional and used to replace the placeholders %1, %2, etc. void i18nc(String context, String text, arg1, ...); Translates text into the language used by the application. Additionally, the string context is visible to translators so they can provide a better translation. The arguments arg1, ..., are optional and used to replace the placeholders %1, %2, etc. void i18np(String singular, String plural, int number, arg1, ...); Translates either singular or plural into the language used by the application, depending on the given number. The arguments arg1, ..., are optional and used to replace the placeholders %1, %2, etc. void i18ncp(String context, String singular, String plural, int number, arg1, ...); Translates either singular or plural into the language used by the application, depending on the given number. Additionally, the string context is visible to translators so they can provide a better translation. The arguments arg1, ..., are optional and used to replace the placeholders %1, %2, etc. Whenever a script is being executed, there is a global variable view representing the current active editor view. The following is a list of all available View functions. Cursor view.cursorPosition() Returns the current cursor position in the view. void view.setCursorPosition(int line, int column) void view.setCursorPosition(Cursor cursor) Returns the current cursor position in the view. void view.setCursorPosition(int line, int column); void view.setCursorPosition(Cursor cursor); Set the current cursor position to either (line, column) or to the given cursor. Cursor view.virtualCursorPosition(); Returns the virtual cursor position with each tab counting the corresponding amount of spaces depending on the current tab width. void view.setVirtualCursorPosition(int line, int column); void view.setVirtualCursorPosition(Cursor cursor); Set the current virtual cursor position to (line, column) or to the given cursor. String view.selectedText(); Returns the selected text. If no text is selected, the returned string is empty. bool view.hasSelection(); Returns true, if the view has selected text, otherwise false. Range view.selection(); Returns the selected text range. The returned range is invalid if there is no selected text. void view.setSelection(Range range); Set the selected text to the given range. void view.removeSelectedText(); Remove the selected text. If the view does not have any selected text, this does nothing. void view.selectAll(); Selects the entire text in the document. void view.clearSelection(); Clears the text selection without removing the text. Whenever a script is being executed, there is a global variable document representing the current active document. The following is a list of all available Document functions. String document.fileName(); Returns the document's filename or an empty string for unsaved text buffers. String document.url(); Returns the document's full url or an empty string for unsaved text buffers. String document.mimeType(); Returns the document's mime type or the mime type application/octet-stream if no appropriate mime type could be found. String document.encoding(); Returns the currently used encoding to save the file. String document.highlightingMode(); Returns the global highlighting mode used for the whole document. String document.highlightingModeAt(Cursor pos); Returns the highlighting mode used at the given position in the document. Array document.embeddedHighlightingModes(); Returns an array of highlighting modes embedded in this document. bool document.isModified(); Returns true, if the document has unsaved changes (modified), otherwise false. String document.text(); Returns the entire content of the document in a single text string. Newlines are marked with the newline character \n. String document.text(int fromLine, int fromColumn, int toLine, int toColumn); String document.text(Cursor from, Cursor to); String document.text(Range range); Returns the text in the given range. It is recommended to use the cursor and range based version for better readability of the source code. String document.line(int line); Returns the given text line as string. The string is empty if the requested line is out of range. String document.wordAt(int line, int column); String document.wordAt(Cursor cursor); Returns the word at the given cursor position. String document.charAt(int line, int column); String document.charAt(Cursor cursor); Returns the character at the given cursor position. String document.firstChar(int line); Returns the first character in the given line that is not a whitespace. The first character is at column 0. If the line is empty or only contains whitespace characters, the returned string is empty. String document.lastChar(int line); Returns the last character in the given line that is not a whitespace. If the line is empty or only contains whitespace characters, the returned string is empty. bool document.isSpace(int line, int column); bool document.isSpace(Cursor cursor); Returns true, if the character at the given cursor position is a whitespace, otherwise false. bool document.matchesAt(int line, int column, int line, String text); bool document.matchesAt(Cursor cursor, String text); Returns true, if the given text matches at the corresponding cursor position, otherwise false. bool document.startsWith(int line, String text, bool skipWhiteSpaces); Returns true, if the line starts with text, otherwise false. The argument skipWhiteSpaces controls whether leading whitespaces are ignored. bool document.endsWith(int line, String text, bool skipWhiteSpaces); Returns true, if the line ends with text, otherwise false. The argument skipWhiteSpaces controls whether trailing whitespaces are ignored. bool document.setText(String text); Sets the entire document text. bool document.clear(); Removes the entire text in the document. bool document.truncate(int line, int column); bool document.truncate(Cursor cursor); Truncate the given line at the given column or cursor position. Returns true on success, or false if the given line is not part of the document range. bool document.insertText(int line, int column, int line, String text); bool document.insertText(Cursor cursor, String text); Inserts the text at the given cursor position. Returns true on success, or false, if the document is in read-only mode. bool document.removeText(int fromLine, int fromColumn, int toLine, int toColumn); bool document.removeText(Cursor from, Cursor to); bool document.removeText(Range range); Removes the text in the given range. Returns true on success, or false, if the document is in read-only mode. bool document.insertLine(int line, String text); Inserts text in the given line. Returns true on success, or false, if the document is in read-only mode or the line is not in the document range. bool document.removeLine(int line); Removes the given text line. Returns true on success, or false, if the document is in read-only mode or the line is not in the document range. void document.joinLines(int startLine, int endLine); Joins the lines from startLine to endLine. Two succeeding text lines are always separated with a single space. int document.lines(); Returns the amount of lines in the document. int document.length(); Returns the number of characters in the document. int document.lineLength(int line); Returns the line's length. void document.editBegin(); Starts an edit group for undo/redo grouping. Make sure to always call editEnd() as often as you call editBegin(). Calling editBegin() internally uses a reference counter, i.e., this call can be nested. void document.editEnd(); Ends an edit group. The last call of editEnd() (i.e. the one for the first call of editBegin()) finishes the edit step. int document.firstColumn(int line); Returns the first non-whitespace column in the given line. If there are only whitespaces in the line, the return value is -1. int document.lastColumn(int line); Returns the last non-whitespace column in the given line. If there are only whitespaces in the line, the return value is -1. int document.prevNonSpaceColumn(int line, int column); int document.prevNonSpaceColumn(Cursor cursor); Returns the column with a non-whitespace characters starting at the given cursor position and searching backwards. int document.nextNonSpaceColumn(int line, int column); int document.nextNonSpaceColumn(Cursor cursor); Returns the column with a non-whitespace characters starting at the given cursor position and searching forwards. int document.prevNonEmptyLine(int line); Returns the next non-empty line containing non-whitespace characters searching backwards. int document.nextNonEmptyLine(int line); Returns the next non-empty line containing non-whitespace characters searching forwards. bool document.isInWord(String character, int attribute); Returns true, if the given character with the given attribute can be part of a word, otherwise false. bool document.canBreakAt(String character, int attribute); Returns true, if the given character with the given attribute is suited to wrap a line, otherwise false. bool document.canComment(int startAttribute, int endAttribute); Returns true, if a range starting and ending with the given attributes is suited to be commented out, otherwise false. String document.commentMarker(int attribute); Returns the comment marker for single line comments for a given attribute. String document.commentStart(int attribute); Returns the comment marker for the start of multi-line comments for a given attribute. String document.commentEnd(int attribute); Returns the comment marker for the end of multi-line comments for a given attribute. int document.attribute(int line, int column); int document.attribute(Cursor cursor); Returns the attribute at the given cursor position. bool document.isAttribute(int line, int column, int attribute); bool document.isAttribute(Cursor cursor, int attribute); Returns true, if the attribute at the given cursor position equals attribute, otherwise false. String document.attributeName(int line, int column); String document.attributeName(Cursor cursor); Returns the attribute name as human readable text. This equals to the itemData name in the syntax highlighting files. bool document.isAttributeName(int line, int column, String name); bool document.isAttributeName(Cursor cursor, String name); Returns true, if the attribute name at a certain cursor position matches the given name, otherwise false. String document.variable(String key); Returns the value of the requested document variable key. If the document variable does not exist, the return value is an empty string. String document.setVariable(String key, String value); Set the value of the requested document variable key. Returns the value of set variable. See also: Kate document variables Since: KDE 4.8 int document.firstVirtualColumn(int line); Returns the virtual column of the first non-whitespace character in the given line or -1, if the line is empty or contains only whitespace characters. int document.lastVirtualColumn(int line); Returns the virtual column of the last non-whitespace character in the given line or -1, if the line is empty or contains only whitespace characters. int document.toVirtualColumn(int line, int column); int document.toVirtualColumn(Cursor cursor); Cursor document.toVirtualCursor(Cursor cursor); Converts the given real cursor position to a virtual cursor position, either returning an int or a Cursor object. int document.fromVirtualColumn(int line, int virtualColumn); int document.fromVirtualColumn(Cursor virtualCursor); Cursor document.fromVirtualCursor(Cursor virtualCursor); Converts the given virtual cursor position to a real cursor position, either returning an int or a Cursor object. Cursor document.anchor(int line, int column, Char character); Cursor document.anchor(Cursor cursor, Char character); Searches backward for the given character starting from the given cursor. As example, if '(' is passed as character, this function will return the position of the opening '('. This reference counting, i.e. other '(...)' are ignored. Cursor document.rfind(int line, int column, String text, int attribute = -1); Cursor document.rfind(Cursor cursor, String text, int attribute = -1); Find backward the given text with the appropriate attribute. The argument attribute is ignored if it is set to -1. The returned cursor is invalid, if the text could not be found. int document.defStyleNum(int line, int column); int document.defStyleNum(Cursor cursor); Returns the default style used at the given cursor position. bool document.isCode(int line, int column); bool document.isCode(Cursor cursor); Returns true, if the attribute at the given cursor position is not equal to all of the following styles: dsComment, dsString, dsRegionMarker, dsChar, dsOthers. bool document.isComment(int line, int column); bool document.isComment(Cursor cursor); Returns true, if the attribute of the character at the cursor position is dsComment, otherwise false. bool document.isString(int line, int column); bool document.isString(Cursor cursor); Returns true, if the attribute of the character at the cursor position is dsString, otherwise false. bool document.isRegionMarker(int line, int column); bool document.isRegionMarker(Cursor cursor); Returns true, if the attribute of the character at the cursor position is dsRegionMarker, otherwise false. bool document.isChar(int line, int column); bool document.isChar(Cursor cursor); Returns true, if the attribute of the character at the cursor position is dsChar, otherwise false. bool document.isOthers(int line, int column); bool document.isOthers(Cursor cursor); Returns true, if the attribute of the character at the cursor position is dsOthers, otherwise false.