mirror of https://github.com/buggins/dlangui.git
Merge pull request #207 from MyLittleRobo/master
Implement showInFileManager for Linux (no xdg-open used)
This commit is contained in:
Vadim Lopatin
commit
7ff48db516
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@ -1245,17 +1245,396 @@ class SDLPlatform : Platform {
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wait(pid);
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return true;
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} else {
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// TODO: implement for POSIX
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if (normalized.isFile)
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normalized = normalized.dirName;
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string exe = "xdg-open";
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string[] args;
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args ~= exe;
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args ~= normalized;
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Log.d("Executing ", args);
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auto pid = spawnProcess(args);
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wait(pid);
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return true;
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import std.stdio : File;
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import std.algorithm : map, filter, splitter, find, canFind, equal, findSplit;
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import std.ascii : isAlpha;
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import std.exception : collectException;
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import std.file : isDir, isFile;
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import std.path : buildPath, absolutePath, isAbsolute, dirName, baseName;
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import std.process : environment, spawnProcess;
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import std.range;
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import std.string : toStringz;
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import std.typecons : Tuple, tuple;
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string toOpen = pathName;
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static inout(char)[] doUnescape(inout(char)[] value, in Tuple!(char, char)[] pairs) nothrow pure {
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auto toReturn = appender!(typeof(value))();
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for (size_t i = 0; i < value.length; i++) {
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if (value[i] == '\\') {
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if (i < value.length - 1) {
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char c = value[i+1];
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auto t = pairs.find!"a[0] == b[0]"(tuple(c,c));
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if (!t.empty) {
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toReturn.put(t.front[1]);
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i++;
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continue;
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}
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}
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}
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toReturn.put(value[i]);
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}
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return toReturn.data;
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}
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static auto unescapeExecArgument(string arg) nothrow pure
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{
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static immutable Tuple!(char, char)[] pairs = [
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tuple('s', ' '), tuple('n', '\n'), tuple('r', '\r'), tuple('t', '\t'),
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tuple('"', '"'), tuple('\'', '\''), tuple('\\', '\\'), tuple('>', '>'),
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tuple('<', '<'), tuple('~', '~'), tuple('|', '|'), tuple('&', '&'),
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tuple(';', ';'), tuple('$', '$'), tuple('*', '*'), tuple('?', '?'),
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tuple('#', '#'), tuple('(', '('), tuple(')', ')'), tuple('`', '`')
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];
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return doUnescape(arg, pairs);
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}
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static string unescapeQuotedArgument(string value) nothrow pure
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{
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static immutable Tuple!(char, char)[] pairs = [
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tuple('`', '`'), tuple('$', '$'), tuple('"', '"'), tuple('\\', '\\')
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];
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return doUnescape(value, pairs);
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}
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static string[] unquoteExecString(string value) pure
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{
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import std.uni : isWhite;
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string[] result;
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size_t i;
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while(i < value.length) {
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if (isWhite(value[i])) {
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i++;
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} else if (value[i] == '"' || value[i] == '\'') {
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char delimeter = value[i];
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size_t start = ++i;
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bool inQuotes = true;
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bool wasSlash;
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while(i < value.length) {
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if (value[i] == '\\' && value.length > i+1 && value[i+1] == '\\') {
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i+=2;
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wasSlash = true;
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continue;
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}
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if (value[i] == delimeter && (value[i-1] != '\\' || (value[i-1] == '\\' && wasSlash) )) {
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inQuotes = false;
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break;
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}
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wasSlash = false;
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i++;
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}
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if (inQuotes) {
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throw new Exception("Missing pair quote");
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}
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result ~= unescapeQuotedArgument(value[start..i]);
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i++;
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} else {
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size_t start = i;
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while(i < value.length && !isWhite(value[i])) {
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i++;
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}
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result ~= value[start..i];
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}
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}
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return result;
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}
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static string[] parseExecString(string execString) pure
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{
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return unquoteExecString(execString).map!(unescapeExecArgument).array;
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}
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static string[] expandExecArgs(in string[] execArgs, in string[] urls = null, string iconName = null, string name = null, string fileName = null) pure
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{
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string[] toReturn;
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foreach(token; execArgs) {
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if (token == "%f") {
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if (urls.length) {
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toReturn ~= urls.front;
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}
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} else if (token == "%F") {
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toReturn ~= urls;
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} else if (token == "%u") {
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if (urls.length) {
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toReturn ~= urls.front;
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}
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} else if (token == "%U") {
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toReturn ~= urls;
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} else if (token == "%i") {
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if (iconName.length) {
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toReturn ~= "--icon";
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toReturn ~= iconName;
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}
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} else if (token == "%c") {
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toReturn ~= name;
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} else if (token == "%k") {
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toReturn ~= fileName;
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} else if (token == "%d" || token == "%D" || token == "%n" || token == "%N" || token == "%m" || token == "%v") {
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continue;
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} else {
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if (token.length >= 2 && token[0] == '%') {
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if (token[1] == '%') {
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toReturn ~= token[1..$];
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} else {
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throw new Exception("Unknown field code: " ~ token);
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}
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} else {
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toReturn ~= token;
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}
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}
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}
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return toReturn;
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}
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static bool isExecutable(string program) nothrow
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{
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import core.sys.posix.unistd;
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return access(program.toStringz, X_OK) == 0;
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}
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static string findExecutable(string program, const(string)[] binPaths) nothrow
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{
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if (program.isAbsolute && isExecutable(program)) {
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return program;
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} else if (program.baseName == program) {
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foreach(path; binPaths) {
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auto candidate = buildPath(path, program);
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if (isExecutable(candidate)) {
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return candidate;
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}
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}
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}
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return null;
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}
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static string[] findFileManagerCommand(string app, const(string)[] appDirs, const(string)[] binPaths) nothrow
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{
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foreach(appDir; appDirs) {
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bool fileExists;
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auto appPath = buildPath(appDir, app);
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collectException(appPath.isFile, fileExists);
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if (!fileExists) {
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//check if file in subdirectory exist. E.g. kde4-dolphin.desktop refers to kde4/dolphin.desktop
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auto appSplitted = findSplit(app, "-");
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if (appSplitted[1].length && appSplitted[2].length) {
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appPath = buildPath(appDir, appSplitted[0], appSplitted[2]);
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collectException(appPath.isFile, fileExists);
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}
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}
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if (fileExists) {
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try {
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bool inDesktopEntry;
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bool canOpenDirectory; //not used for now. Some file managers does not have MimeType in their .desktop file.
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string exec;
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string tryExec;
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foreach(line; File(appPath).byLine()) {
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if (exec.length || tryExec.length) {
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break;
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}
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if (!line.length || line[0] == '#') {
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continue;
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} else if (line[0] == '[') {
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if (line.equal("[Desktop Entry]")) {
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inDesktopEntry = true;
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} else {
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if (inDesktopEntry) {
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break;
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}
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inDesktopEntry = false;
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}
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} else if (line[0].isAlpha) {
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if (inDesktopEntry) {
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auto splitted = findSplit(line, "=");
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if (splitted[1].length) {
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auto key = splitted[0];
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auto value = splitted[2];
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if (key.equal("MimeType")) {
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canOpenDirectory = value.splitter(';').canFind("inode/directory");
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} else if (key.equal("Exec")) {
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exec = value.idup;
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} else if (key.equal("TryExec")) {
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tryExec = value.idup;
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}
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}
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}
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} else {
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//unexpected line content
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break;
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}
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}
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if (tryExec.length) {
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auto program = findExecutable(tryExec, binPaths);
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if (program.length) {
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return [program];
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}
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}
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if (exec.length) {
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return expandExecArgs(parseExecString(exec));
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}
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} catch(Exception e) {
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}
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}
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}
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return null;
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}
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static void execShowInFileManager(string[] fileManagerArgs, string toOpen)
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{
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toOpen = toOpen.absolutePath();
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switch(fileManagerArgs[0].baseName) {
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//nautilus and nemo selects item if it's file
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case "nautilus":
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case "nemo":
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fileManagerArgs ~= toOpen;
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break;
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//dolphin needs --select option
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case "dolphin":
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case "konqueror":
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fileManagerArgs ~= ["--select", toOpen];
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break;
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default:
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{
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bool pathIsDir;
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collectException(toOpen.isDir, pathIsDir);
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if (!pathIsDir) {
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fileManagerArgs ~= toOpen.dirName;
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} else {
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fileManagerArgs ~= toOpen;
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}
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}
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break;
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}
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File devNullOut;
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try {
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devNullOut = File("/dev/null", "wb");
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} catch(Exception) {
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devNullOut = std.stdio.stdout;
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}
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File devNullErr;
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try {
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devNullErr = File("/dev/null", "wb");
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} catch(Exception) {
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devNullErr = std.stdio.stderr;
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}
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File devNullIn;
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try {
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devNullIn = File("/dev/null", "rb");
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} catch(Exception) {
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devNullIn = std.stdio.stdin;
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}
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spawnProcess(fileManagerArgs, devNullIn, devNullOut, devNullErr);
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}
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string configHome = environment.get("XDG_CONFIG_HOME", buildPath(environment.get("HOME"), ".config"));
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string appHome = environment.get("XDG_DATA_HOME", buildPath(environment.get("HOME"), ".local/share")).buildPath("applications");
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auto configDirs = environment.get("XDG_CONFIG_DIRS", "/etc/xdg").splitter(':').find!(p => p.length > 0);
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auto appDirs = environment.get("XDG_DATA_DIRS", "/usr/local/share:/usr/share").splitter(':').find!(p => p.length > 0).map!(p => buildPath(p, "applications"));
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auto allAppDirs = chain(only(appHome), appDirs).array;
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auto binPaths = environment.get("PATH").splitter(':').find!(p => p.length > 0).array;
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foreach(mimeappsList; chain(only(configHome), only(appHome), configDirs, appDirs).map!(p => buildPath(p, "mimeapps.list"))) {
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try {
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bool inDefaultApps;
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foreach(line; File(mimeappsList).byLine()) {
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if (!line.length || line[0] == '#') {
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continue;
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} else if (line[0] == '[') {
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if (line.equal("[Default Applications]")) {
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inDefaultApps = true;
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} else {
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if (inDefaultApps) {
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break;
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}
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inDefaultApps = false;
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}
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} else if (line[0].isAlpha) {
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if (inDefaultApps) {
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auto keyValue = findSplit(line, "=");
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auto key = keyValue[0];
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auto value = keyValue[2];
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if (keyValue[1].length && key.equal("inode/directory") && value.length) {
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auto app = value.idup;
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auto fileManagerArgs = findFileManagerCommand(app, allAppDirs, binPaths);
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if (fileManagerArgs.length) {
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execShowInFileManager(fileManagerArgs, toOpen);
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return true;
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} else {
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break;
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}
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}
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}
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} else {
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//unexpected line content
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break;
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}
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}
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} catch(Exception e) {
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}
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}
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foreach(mimeinfoCache; allAppDirs.map!(p => buildPath(p, "mimeinfo.cache"))) {
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try {
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bool inMimeCache;
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foreach(line; File(mimeinfoCache).byLine()) {
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if (!line.length || line[0] == '#') {
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continue;
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} else if (line[0] == '[') {
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if (line.equal("[MIME Cache]")) {
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inMimeCache = true;
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} else {
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if (inMimeCache) {
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break;
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}
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inMimeCache = false;
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}
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} else if (line[0].isAlpha) {
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if (inMimeCache) {
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auto keyValue = findSplit(line, "=");
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auto key = keyValue[0];
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auto value = keyValue[2];
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if (keyValue[1].length && key.equal("inode/directory") && value.length) {
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auto alternatives = value.splitter(';').filter!(p => p.length > 0);
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foreach(alternative; alternatives) {
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auto fileManagerArgs = findFileManagerCommand(alternative.idup, allAppDirs, binPaths);
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if (fileManagerArgs.length) {
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execShowInFileManager(fileManagerArgs, toOpen);
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return true;
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}
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}
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break;
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}
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}
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} else {
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//unexpected line content
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break;
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}
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}
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} catch(Exception e) {
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}
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}
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Log.e("showInFileManager -- could not find application to open directory");
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return false;
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}
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} catch (Exception e) {
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Log.e("showInFileManager -- exception while trying to open file browser");
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