carlos wrote:
> Is it posible to use php with sage ?
One way that I know of to allow an external language to access SAGE is to use
the following simple SAGE server program:
==== Server ====
#
# Alex Clemesha <[EMAIL PROTECTED]> 2007
# Modified to use the SAGE preparser and to accept
# multiple line input.
#
from twisted.web2 import resource
from twisted.web2 import http_headers
from twisted.web2 import http
from twisted.web2 import channel
from twisted.web2 import server
#from sage.interfaces import sage0
# SAGE libraries
import sage.interfaces.sage0
from sage.misc.misc import word_wrap
import sage.misc.preparser
from sage.misc.viewer import browser
from sage.structure.sage_object import load, SageObject
global sage0
sage0 = sage.interfaces.sage0.Sage()
HTML = """
<html>
<head>
<script type="text/javascript">
var axajObject = createRequestObject();
function createRequestObject() {
var xmlhttp;
try { xmlhttp=new ActiveXObject("Msxml2.XMLHTTP"); }
catch(e) {
try {
xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
}
catch(e) {
xmlhttp=null;
}
}
if(!xmlhttp&&typeof XMLHttpRequest!="undefined") {
xmlhttp=new XMLHttpRequest();
}
return xmlhttp;
}
function sendRequest(event) {
var code = document.getElementById("code").value;
if (code.length > 0 && event.keyCode == 13) {
var ecode = encodeURIComponent(code);
//alert(ecode)
var req = "/eval?code=" + ecode;
try{
axajObject.open("POST", req, true);
axajObject.setRequestHeader('Content-Type', "text/html");
axajObject.onreadystatechange = handleResponse;
axajObject.send("");
}
catch(e){
// caught an error
alert('Request send failed.');
}
finally{}
}
}
function handleResponse() {
if(axajObject.readyState == 4){
var response = axajObject.responseText;
//alert(response);
var code = document.getElementById("code").value;
var res = "<p>Result of " + code + ": " + response + "</p>";
document.getElementById("output").innerHTML = res;
}
}
</script>
<style type="text/css">
#container{text-align:center;width:550px;border:1px solid #387CAF}
#output{text-align:center;font-size:14px;font-weight:bold}
</style>
</head>
<body>
<div id="container">
<h3>Simplest possible AJAX SAGE calculator.</h3>
<p>Type in some valid SAGE code and hit enter.</p><br/><br/>
Code: <input type="text" id="code" name="code"
onkeypress="sendRequest(event)"></label>
<br/><br/>
<span id="output"></span>
<br/><br/><br/><br/>
<h3>If you run SAGEIDE on the same machine that the simple server is
running on, SAGEIDE can be used to send requests to the server
too.</h3>
</div>
</body>
</html>
"""
class Root(resource.Resource):
addSlash = True
def __init__(self):
self.child_eval = EvalSomeSAGECode()
def render(self, request):
return http.Response(200, {'content-type':
http_headers.MimeType('text', 'html')}, HTML)
class EvalSomeSAGECode(resource.PostableResource):
def render(self, request):
code_to_eval = request.args.get('code')[0]
print code_to_eval
directory = '/tmp'
try:
#code_to_eval = code_to_eval.replace('\\','')
s =
sage.misc.preparser.preparse_file(code_to_eval, magic=False,
do_time=True, ignore_prompts=True)
s = [x for x in s.split('\n') if len(x.split()) > 0 and \
x.lstrip()[0] != '#'] # remove all
blank lines and comment lines
if len(s) > 0:
t = s[-1]
if len(t) > 0 and not ':' in t and \
not t[0].isspace() and
not t[:3] == '"""':
t = t.replace("'","\\'")
s[-1] = "exec compile('%s', '',
'single')"%t
s = '\n'.join(s) + '\n'
open('%s/_temp_.py'%directory, 'w').write(s)
result =
sage0._eval_line('execfile("%s/_temp_.py")'%directory)
#o = word_wrap(o, ncols=numcols)
print result
return http.Response(200, {'content-type':
http_headers.MimeType('text', 'html')}, result)
except (RuntimeError, TypeError), msg:
print "ERROR!!!", msg
if __name__ == "__main__":
from twisted.internet import reactor
site = server.Site(Root())
factory = channel.HTTPFactory(site)
reactor.listenTCP(8000, factory)
print "\nOpen your browser to 'http://localhost:8000'\n"
reactor.run()
==== end server ====
Save this program (lets call it php_server.py), set the "/tmp" string
to a directory of your choice, and then execute the program as
follows:
sage php_server.py
You can then test the program by pointing a web browser to
"http://localhost:8000";.
The following code is a client for this server which is written in Jython.
It sends SAGE code to the simple server for execution and then
prints the response. My thought is that PHP might be able to
access the simple server using code that is similar to this.
==== jython client ====
import java.beans.PropertyChangeEvent
import java.beans.PropertyChangeListener
import java.io.ByteArrayInputStream
import java.net.URL as URL
import java.net.URI as URI
import java.net.URLEncoder as URLEncoder
import javax.xml.parsers.DocumentBuilderFactory
import javax.xml.xpath.XPath
import javax.xml.xpath.XPathConstants
import javax.xml.xpath.XPathExpression
import javax.xml.xpath.XPathFactory
import org.jdesktop.http.async.AsyncHttpRequest.ReadyState as ReadyState
import org.jdesktop.http.async.AsyncHttpRequest as AsyncHttpRequest
import org.w3c.dom.Document
import org.w3c.dom.NodeList
import org.jdesktop.http.async.XmlHttpRequest
import org.jdesktop.http.Method as Method
import java.io.ByteArrayOutputStream
import java.lang.System as System
import pickle
#System.out.println(buffer.getText(0,buffer.length))
clazz =
jEdit.getPlugin("org.sageide.SAGEIDEPlugin").getPluginJAR().getClassLoader().loadClass("org.sageide.SAGEIDE",1)
class ReadyListener( java.beans.PropertyChangeListener ):
def __init__(self, request):
self.req = request
self.response = None
self.obj = None
def propertyChange(self, evt ):
if evt.getNewValue() == ReadyState.LOADED:
clazz.displayText.append("New------------------\n ")
self.response = self.req.getResponseText()
#System.out.println(self.response)
if self.response != None:
clazz.displayText.append(self.response + "\n\n ")
else:
clazz.displayText.append("No response
from server\n\n ")
clazz.displayText.setCaretPosition(clazz.displayText.getDocument().getLength())
req = AsyncHttpRequest()
si = ReadyListener(req)
req.addReadyStateChangeListener( si )
try:
code = URLEncoder.encode(buffer.getText(0,buffer.length),"UTF8")
#code = "2^3"
#uri = URI("http", None,"localhost", 8000, "/eval", "code="+code, None)
uri = "http://localhost:8000/eval?code="+code
req.open(Method.POST, uri, 1 )
req.setRequestHeader("Content-Type", "text/html")
req.send("")
except Exception, e:
print "exception",e
==== end jython client ====
Hope this helps,
Ted
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