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Implementing nano text editor

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This commit is contained in:
BlackLight 2011-01-01 17:25:28 +01:00
parent 9d15ad3804
commit 140b4a6099
8 changed files with 656 additions and 23 deletions
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47
blash.css
View file

@ -82,3 +82,50 @@ span.match
font-weight : bold;
}
div.editor_container
{
width : 100%;
height : 100%;
overflow : hidden;
}
textarea.editor_window
{
border : 0px;
width : 100%;
height : 93%;
background-color : black;
color : #888;
font-family : Terminus, courier, monospace, fixed;
font-size : 13px;
}
.editor_status
{
width : 100%;
background-color : black;
color : #888;
font-family : Terminus, courier, monospace, fixed;
font-size : 13px;
margin-bottom : 0;
}
.editor_head
{
width : 100%;
background-color : #222;
color : #888;
font-family : Terminus, courier, monospace, fixed;
font-size : 13px;
margin-bottom : 0;
}
input.editor_status_input
{
background-color : black;
color : #888;
font-family : Terminus, courier, monospace, fixed;
font-size : 13px;
border : 0;
}

69
commands/cd.json
View file

@ -10,33 +10,66 @@
{
var out = '';
if ( !arg || arg.length == 0 )
if ( !arg || arg.length == 0 || arg == '~' )
{
return "Parameter expected<br/>\n";
}
shell.auto_prompt_focus = false;
shell.auto_prompt_refresh = false;
var users_php = window.location.href;
users_php = users_php.replace ( /\/([a-zA-Z\.]+)$/, '/modules/users/users.php' );
params = 'action=gethome';
var found = false;
arg = shell.expandPath ( arg );
var http = new XMLHttpRequest();
http.open ( "POST", users_php, true );
http.setRequestHeader ( "Content-type", "application/x-www-form-urlencoded" );
http.setRequestHeader ( "Content-length", params.length );
http.setRequestHeader ( "Connection", "close" );
for ( var i=0; i < shell.files.length && !found; i++ )
{
if ( shell.files[i].path == arg )
http.onreadystatechange = function ()
{
found = true;
if ( shell.files[i].type != 'directory' )
if ( http.readyState == 4 && http.status == 200 )
{
return "cd: not a directory: " + arg + "<br/>\n";
if ( http.responseText.length > 0 )
{
shell.home = http.responseText;
shell.path = shell.home;
} else {
shell.user = shell.json.user;
}
shell.cmdOut.innerHTML = '';
shell.auto_prompt_focus = true;
shell.auto_prompt_refresh = true;
shell.refreshPrompt ( false, false );
}
}
http.send ( params );
} else {
var found = false;
arg = shell.expandPath ( arg );
for ( var i=0; i < shell.files.length && !found; i++ )
{
if ( shell.files[i].path == arg )
{
found = true;
if ( shell.files[i].type != 'directory' )
{
return "cd: not a directory: " + arg + "<br/>\n";
}
}
}
if ( !found )
{
return "cd: No such file or directory: " + arg + "<br/>\n";
}
shell.path = arg;
}
if ( !found )
{
return "cd: no such file or directory: " + arg + "<br/>\n";
}
shell.path = arg;
return out;
},
}

373
commands/nano.json Normal file
View file

@ -0,0 +1,373 @@
{
"name" : "nano",
"info" : {
"syntax" : "nano &lt;file name&gt;",
"brief" : "Edit the content of a new or existing file",
},
"action" : function ( arg )
{
var file = null;
var parent_dir = null;
var newfile = false;
if ( !arg || arg.length == 0 )
{
return "nano: Parameter expected<br/>\n";
}
arg = shell.expandPath ( arg );
if (!( parent_dir = shell.getParentDirectory ( arg )))
{
return "nano: Parent directory not found<br/>\n";
}
if ( !( file = shell.getFile ( arg )))
{
newfile = true;
}
if ( !newfile )
{
if ( file['type'] == 'directory' )
{
arg = arg.replace ( /</g, '&lt;' );
arg = arg.replace ( />/g, '&gt;' );
return "nano: Cannot edit '" + arg + "': Is a directory<br/>\n";
}
}
var users_php = window.location.href;
users_php = users_php.replace ( /\/([a-zA-Z\.]+)$/, '/modules/users/users.php' );
params = 'action=getperms&resource=' +
( newfile ? escape ( parent_dir['path'] ) : escape ( arg ));
var http = new XMLHttpRequest();
http.open ( "POST", users_php, true );
http.setRequestHeader ("Content-type", "application/x-www-form-urlencoded");
http.setRequestHeader ("Content-length", params.length);
http.setRequestHeader ("Connection", "close");
http.onreadystatechange = function ()
{
if ( http.readyState == 4 && http.status == 200 )
{
if ( http.responseText.length > 0 )
{
shell.perms = eval ( '(' + http.responseText + ')' );
}
}
}
http.send ( params );
fname = arg.replace ( /</g, '&lt;' );
fname = fname.replace ( />/g, '&gt;' );
shell.fname = arg;
shell.editorkeypressed = this.editorkeypressed;
shell.confirmkey = this.confirmkey;
shell.bufferSave = this.bufferSave;
shell.default_editor_status = "[<b>^X</b> Exit] [<b>^O</b> WriteOut] [<b>^W</b> Where Is]";
if ( shell.perms )
{
if ( shell.perms.write == false )
{
shell.default_editor_status += ' [read-only]';
}
}
shell.default_editor_head = "<table class=\"editor_head\" border=\"0\" width=\"100%\"><tr>" +
"<td align=\"left\">blash nano</td><td align=\"right\">File: " + fname + "</td></tr></table>";
shell.auto_prompt_focus = false;
shell.auto_prompt_refresh = false;
shell.window.removeChild ( shell.prompt );
shell.window.removeChild ( shell.cmdOut );
shell.window.innerHTML = '';
var container = document.createElement ( 'div' );
container.setAttribute ( 'class', 'editor_container' );
container.setAttribute ( 'id', 'editor_container' );
shell.window.appendChild ( container );
shell.editor_container = container;
var head = document.createElement ( 'span' );
head.setAttribute ( 'class', 'editor_head' );
head.setAttribute ( 'id', 'editor_head' );
head.innerHTML = shell.default_editor_head;
container.appendChild ( head );
shell.editor_head = document.getElementById ( 'editor_head' );
var editor = document.createElement ( 'textarea' );
editor.setAttribute ( 'class', 'editor_window' );
editor.setAttribute ( 'id', 'editor_window' );
editor.setAttribute ( 'onkeypress', 'shell.editorkeypressed ( event )' );
editor.innerHTML = '';
has_content = false;
if ( file )
{
if ( file.content )
{
if ( file.content.length > 0 )
{
var content = file.content.replace ( /<br\/?>/g, "\n" );
content = content.replace ( '&lt;', '<' );
content = content.replace ( '&gt;', '>' );
editor.value = content;
has_content = true;
}
}
}
if ( !has_content )
{
editor.value = '';
shell.originalContent = '';
} else {
shell.originalContent = file.content;
}
container.appendChild ( editor );
editor.focus();
shell.file_changed = false;
shell.editor_window = document.getElementById ( 'editor_window' );
var status = document.createElement ( 'span' );
status.setAttribute ( 'class', 'editor_status' );
status.setAttribute ( 'id', 'editor_status' );
status.innerHTML = shell.default_editor_status;
container.appendChild ( status );
shell.editor_status = document.getElementById ( 'editor_status' );
return '';
},
"editorkeypressed" : function ( e )
{
var evt = ( window.event ) ? window.event : e;
var key = ( evt.charCode ) ? evt.charCode : evt.keyCode;
key = String.fromCharCode ( key );
if ( !shell.file_changed )
{
if ( shell.originalContent != shell.editor_window.value )
{
if ( shell.perms )
{
if ( shell.perms.write == false )
{
shell.default_editor_status += ' [read-only]';
shell.editor_status.innerHTML += ' [read-only]';
}
}
shell.editor_status.innerHTML += ' [modified]';
shell.file_changed = true;
}
}
if (( key == 'x' || key == 'X' ) && evt.ctrlKey )
{
evt.preventDefault();
if ( shell.file_changed )
{
var can_write = false;
if ( shell.perms )
{
if ( shell.perms.write == true )
{
can_write = true;
}
}
if ( can_write )
{
shell.editor_status.innerHTML = 'Save modified buffer (ANSWERING "No" WILL DESTROY CHANGES) ? ' +
'(Yes/No/Cancel) ';
} else {
shell.editor_status.innerHTML = 'You modified a read-only file. If you exit, the changes will ' +
'be lost. Are you sure you cant to exit? (Yes/No) ';
}
shell.editor_status.innerHTML += '<input type="text" class="editor_status_input" id="editor_status_input" '+
'onkeydown="shell.confirmkey ( event )"/>';
document.getElementById ( 'editor_status_input' ).focus();
} else {
shell.auto_prompt_focus = true;
shell.auto_prompt_refresh = true;
shell.refreshPrompt ( true );
}
} else if (( key == 'o' || key == 'O' ) && evt.ctrlKey ) {
evt.preventDefault();
if ( shell.file_changed )
{
var can_write = false;
if ( shell.perms )
{
if ( shell.perms.write == true )
{
can_write = true;
}
}
if ( can_write )
{
shell.bufferSave();
shell.file_changed = false;
shell.editor_status.innerHTML = shell.default_editor_status;
}
}
}
},
"confirmkey" : function ( e )
{
var can_write = false;
var evt = ( window.event ) ? window.event : e;
var key = ( evt.charCode ) ? evt.charCode : evt.keyCode;
key = String.fromCharCode ( key );
if ( shell.perms )
{
if ( shell.perms.write == true )
{
can_write = true;
}
}
if ( can_write )
{
switch ( key )
{
case 'c':
case 'C':
evt.preventDefault();
shell.editor_status.innerHTML = shell.default_editor_status + ' [modified]';
shell.editor_window.focus();
break;
case 'y':
case 'Y':
shell.bufferSave();
case 'n':
case 'N':
evt.preventDefault();
shell.auto_prompt_focus = true;
shell.auto_prompt_refresh = true;
shell.refreshPrompt ( true );
break;
default :
evt.preventDefault();
document.getElementById ( 'editor_status_input' ).value = '';
break;
}
} else {
switch ( key )
{
case 'n':
case 'N':
evt.preventDefault();
shell.editor_status.innerHTML = shell.default_editor_status + ' [modified]';
shell.editor_window.focus();
break;
case 'y':
case 'Y':
evt.preventDefault();
shell.auto_prompt_focus = true;
shell.auto_prompt_refresh = true;
shell.refreshPrompt ( true );
break;
default :
evt.preventDefault();
document.getElementById ( 'editor_status_input' ).value = '';
break;
}
}
},
"bufferSave" : function ()
{
var users_php = window.location.href;
users_php = users_php.replace ( /\/([a-zA-Z\.]+)$/, '/modules/users/users.php' );
params = 'action=set_content&file=' + escape ( shell.fname ) + '&content=' + escape ( document.getElementById ( 'editor_window' ).value );
var http = new XMLHttpRequest();
http.open ( "POST", users_php, true );
http.setRequestHeader ("Content-type", "application/x-www-form-urlencoded");
http.setRequestHeader ("Content-length", params.length);
http.setRequestHeader ("Connection", "close");
http.onreadystatechange = function ()
{
if ( http.readyState == 4 && http.status == 200 )
{
if ( http.responseText.length > 0 )
{
shell.editor_status.innerHTML = http.responseText;
setTimeout ( 'shell.editor_status.innerHTML = shell.default_editor_status', 5000 );
var files_config = window.location.href;
files_config = files_config.replace ( /\/([a-zA-Z\.]+)$/, '/modules/users/files.php' );
var http2 = new XMLHttpRequest();
http2.open ( "GET", files_config, true );
http2.onreadystatechange = function ()
{
if ( http2.readyState == 4 && http2.status == 200 )
{
shell.files = eval ( '(' + http2.responseText + ')' );
// Remove duplicates
var tmp = new Array();
for ( var i in shell.files )
{
var contains = false;
for ( var j=0; j < tmp.length && !contains; j++ )
{
if ( shell.files[i].path == tmp[j].path )
{
contains = true;
}
}
if ( !contains )
{
tmp.push ( shell.files[i] );
}
}
shell.files = tmp;
}
}
http2.send ( null );
}
}
}
http.send ( params );
shell.originalContent = shell.editor_window.value;
shell.file_changed = false;
}
}

88
modules/users/user_utils.php
View file

@ -305,6 +305,94 @@ function __json_encode( $data ) {
return $json;
}
function set_content ( $file, $content )
{
$perms = json_decode ( getPerms ( $file ), true );
$can_write = true;
if ( !$perms['write'] )
{
$can_write = false;
if ( $perms['message'] )
{
if ( !strcasecmp ( $perms['message'], "Resource not found" ))
{
$parent = preg_replace ( "@/[^/]+$@", '', $file );
$perms = json_decode ( getPerms ( $parent ), true );
if ( !$perms['write'] )
{
if ( $perms['message'] )
{
if ( !strcasecmp ( $perms['message'], "Resource not found" ))
{
return "Cannot save the file: Parent directory not found";
} else {
return $perms['message'];
}
} else {
return "Cannot write to the file: Permission denied";
}
} else {
$can_write = true;
}
} else {
return $perms['message'];
}
} else {
return "Cannot write to the file: Permission denied";
}
}
$resp = __touch ( $file, null );
include "../../system/files_json.php";
if ( !$files_json || strlen ( $files_json ) == 0 )
{
return 'Error: Empty JSON file container';
}
$json = json_decode ( $files_json, true );
if ( !$json )
{
return 'Error: Empty JSON file container';
}
for ( $i=0; $i < count ( $json ); $i++ )
{
$path = $json[$i]['path'];
if ( !$path || strlen ( $path ) == 0 )
{
continue;
}
if ( $path == $file )
{
$content = str_replace ( '<', '&lt;', $content );
$content = str_replace ( '>', '&gt;', $content );
$content = str_replace ( "\'", "'", $content );
$content = str_replace ( '"', "'", $content );
$content = str_replace ( '\\', '', $content );
$content = str_replace ( "\r", '', $content );
$content = str_replace ( "\n", '<br/>', $content );
$json[$i]['content'] = $content;
if ( !( $fp = fopen ( "../../system/files_json.php", "w" )))
{
return "Unable to write on directories file\n";
}
fwrite ( $fp, "<?php\n\n\$files_json = <<<JSON\n".__json_encode ( $json )."\nJSON;\n\n?>");
fclose ( $fp );
return "File successfully saved";
}
}
}
function __touch ( $file, $own_perms )
{
include "../../system/files_json.php";

12
modules/users/users.php
View file

@ -241,6 +241,18 @@ switch ( $action )
print __rm ( $file );
break;
case 'set_content':
$file = $_REQUEST['file'];
$content = $_REQUEST['content'];
if ( !( $file && $content ))
{
return false;
}
print set_content ( $file, $content );
break;
default :
print "Unallowed action\n";
break;

88
system/blash.js
View file

@ -250,6 +250,8 @@ function blash ()
if ( key == 68 && evt.ctrlKey )
{
evt.preventDefault();
/* CTRL-d -> logout */
for ( i=0; i < this.commands.length; i++ )
{
@ -312,6 +314,7 @@ function blash ()
return false;
} else if ( key == 76 && evt.ctrlKey ) {
// CTRL-l clears the screen
evt.preventDefault();
this.refreshPrompt ( true, false );
return false;
} else if ( key == 13 || key == 10 || ( key == 67 && evt.ctrlKey )) {
@ -435,6 +438,7 @@ function blash ()
this.prompt.focus();
} else if ( key == 9 ) {
this.prompt.focus();
evt.preventDefault();
if ( this.prompt.value.match ( /\s(.*)$/ ))
{
@ -613,13 +617,22 @@ function blash ()
*/
this.refreshPrompt = function ( clearTerm, clearOut )
{
var value = this.prompt.value;
var out = this.cmdOut.innerHTML;
var value = "";
var out = "";
var text = ( this.json.promptText ) ? this.json.promptText : "[%n@%m %W] $ ";
text = this.unescapePrompt ( text, this.json.promptSequences );
this.window.removeChild ( this.prompt );
this.window.removeChild ( this.cmdOut );
if (( this.prompt = document.getElementById ( "promptText" )))
{
value = this.prompt.innerHTML;
this.window.removeChild ( this.prompt );
}
if (( this.cmdOut = document.getElementById ( "blashCmdOut" )))
{
out = this.cmdOut.innerHTML;
this.window.removeChild ( this.cmdOut );
}
if ( clearTerm )
{
@ -630,7 +643,7 @@ function blash ()
{
var outDiv = document.createElement ( 'span' );
outDiv.innerHTML = ((value.length > 0) ? value : '') +
'<br/>' + ((out.length > 0) ? (out + '<br/>') : '') + text;
'<br/>' + ((out.length > 0) ? (out + '<br/>') : '') + text + (( shell.__first_cmd ) ? '<br/>' : '' );
this.window.appendChild ( outDiv );
}
@ -737,5 +750,70 @@ function blash ()
return matches;
}
/**
* \brief Check if a file or directory exists
* \return The object reference to the file or directory if it exists, false otherwise
*/
this.getFile = function ( arg )
{
if ( !arg || arg.length == 0 )
{
return false;
}
arg = this.expandPath ( arg );
for ( var i=0; i < this.files.length; i++ )
{
if ( this.files[i].path == arg )
{
return this.files[i];
}
}
return false;
}
/**
* \brief Check if the parent directory of a file exists
* \return The object reference to the parent directory, if it exists and it is actually a directory, false otherwise
*/
this.getParentDirectory = function ( arg )
{
if ( !arg || arg.length == 0 )
{
return false;
}
arg = this.expandPath ( arg );
if ( arg.match ( /(\/[^\/]+)$/ ))
{
arg = arg.replace ( RegExp.$1, '' );
} else {
arg = '/';
}
if ( arg.length == 0 )
{
arg = '/';
}
for ( var i=0; i < this.files.length; i++ )
{
if ( this.files[i].path == arg )
{
if ( this.files[i].type == 'directory' )
{
return this.files[i];
} else {
return false;
}
}
}
return false;
}
}

1
system/blash.json
View file

@ -64,6 +64,7 @@
"ls",
"man",
"mkdir",
"nano",
"passwd",
"pwd",
"rm",

1
system/files_json.php
View file

@ -32,6 +32,7 @@ $files_json = <<<JSON
, {"path": "/irc", "type": "file", "content": "IRC channel at #thegame@irc.randomstuff.com"}
, {"path": "/root", "type": "directory", "can_read": "root", "can_write": "root"}
, {"path": "/home/blacklight", "type": "directory", "owner": "blacklight", "can_read": "blacklight", "can_write": "blacklight"}
, {"path": "/home/blacklight/lol", "type": "file", "owner": "blacklight", "can_read": "@all", "can_write": "blacklight", "content": "this is a test<br/>lol lol asd 'lol' &lt;asd&gt; 'asd'"}
]
JSON;