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Added readUrl method to shell

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This commit is contained in:
igor%mir2.org 2003-10-21 09:13:59 +00:00
parent 1b5abc3d0b
commit 31bc498af4
3 changed files with 141 additions and 31 deletions
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14
js/rhino/docs/shell.html
View File

@ -80,6 +80,20 @@ print([<i>expr</i> ...])</h4>
<blockquote>Evaluate and print expressions. Evaluates each expression,
converts the result to a string, and prints it.</blockquote>
<h4>
readFile(<i>path</i> [, <i>characterCoding</i>)</h4>
<blockquote>Read given file and convert its bytes to a string using the
specified character coding or default character coding if explicit coding
argument is not given.</blockquote>
<h4>
readUrl(<i>url</i> [, <i>characterCoding</i>)</h4>
<blockquote>Open an input connection to the given string url, read all its
bytes and convert them to a string using the specified character coding or
default character coding if explicit coding argument is not given.</blockquote>
<h4>
runCommand(<i>commandName</i>, [<i>arg</i>, ...] [<i>options</i>])</h4>

7
js/rhino/toolsrc/org/mozilla/javascript/tools/resources/Messages.properties
View File

@ -74,6 +74,10 @@ msg.help =\
print([expr ...]) Evaluate and print expressions. \n\
quit() Quit the shell. \n\
version([number]) Get or set the JavaScript version number. \n\
\n\
For full description of all available commands see shell.html in\n\
the docs directory of Rhino distribution.\n\
msg.warning =\
warning: {0}
@ -145,6 +149,9 @@ msg.shell.seal.not.scriptable =\
msg.shell.readFile.bad.args =\
readFile require at least file path to be specified
msg.shell.readUrl.bad.args =\
readUrl require at least file path to be specified
msg.idswitch.same_string =\
The string {0} is used second time in the switch code. \
Previous occurrence was at line {1}

151
js/rhino/toolsrc/org/mozilla/javascript/tools/shell/Global.java
View File

@ -41,6 +41,7 @@
package org.mozilla.javascript.tools.shell;
import java.io.*;
import java.net.*;
import java.lang.reflect.*;
import org.mozilla.javascript.*;
import org.mozilla.javascript.tools.ToolErrorReporter;
@ -62,14 +63,13 @@ public class Global extends ImporterTopLevel {
String[] names = { "print", "quit", "version", "load", "help",
"loadClass", "defineClass", "spawn", "sync",
"serialize", "deserialize", "runCommand",
"seal", "readFile" };
"seal", "readFile", "readUrl" };
try {
defineFunctionProperties(names, Global.class,
ScriptableObject.DONTENUM);
} catch (PropertyException e) {
throw new Error(); // shouldn't occur.
}
defineProperty(privateName, this, ScriptableObject.DONTENUM);
// Set up "environment" in the global scope to provide access to the
// System environment variables.
@ -231,6 +231,12 @@ public class Global extends ImporterTopLevel {
if (args.length == 0) {
throw reportRuntimeError("msg.expected.string.arg");
}
Object arg0 = args[0];
if (arg0 instanceof Wrapper) {
Object wrapped = ((Wrapper)arg0).unwrap();
if (wrapped instanceof Class)
return (Class)wrapped;
}
String className = Context.toString(args[0]);
try {
return Class.forName(className);
@ -511,16 +517,16 @@ public class Global extends ImporterTopLevel {
/**
* The readFile reads the given file context and convert it to a string
* using the specified encoding or default encoding if explicit encoding
* argument is not given.
* using the specified character coding or default character coding if
* explicit coding argument is not given.
* <p>
* Usage:
* <pre>
* readFile(filePath)
* readFile(filePath, encoding)
* readFile(filePath, charCoding)
* </pre>
* The first form converts file's context to string using the default
* encoding.
* character coding.
*/
public static Object readFile(Context cx, Scriptable thisObj, Object[] args,
Function funObj)
@ -530,12 +536,42 @@ public class Global extends ImporterTopLevel {
throw reportRuntimeError("msg.shell.readFile.bad.args");
}
String path = ScriptRuntime.toString(args[0]);
String encoding = null;
String charCoding = null;
if (args.length >= 2) {
encoding = ScriptRuntime.toString(args[1]);
charCoding = ScriptRuntime.toString(args[1]);
}
return readFile(path, encoding);
return readUrl(path, charCoding, true);
}
/**
* The readUrl opens connection to the given URL, read all its data
* and converts them to a string
* using the specified character coding or default character coding if
* explicit coding argument is not given.
* <p>
* Usage:
* <pre>
* readUrl(url)
* readUrl(url, charCoding)
* </pre>
* The first form converts file's context to string using the default
* charCoding.
*/
public static Object readUrl(Context cx, Scriptable thisObj, Object[] args,
Function funObj)
throws IOException
{
if (args.length == 0) {
throw reportRuntimeError("msg.shell.readUrl.bad.args");
}
String url = ScriptRuntime.toString(args[0]);
String charCoding = null;
if (args.length >= 2) {
charCoding = ScriptRuntime.toString(args[1]);
}
return readUrl(url, charCoding, false);
}
public InputStream getIn() {
@ -562,12 +598,10 @@ public class Global extends ImporterTopLevel {
errStream = err;
}
static final String privateName = "org.mozilla.javascript.tools.shell.Global private";
public static Global getInstance(Scriptable scope) {
Object v = ScriptableObject.getProperty(scope,privateName);
if (v instanceof Global)
return (Global) v;
GlobalScope global = GlobalScope.get(scope);
if (global instanceof Global)
return (Global)global;
return null;
}
@ -758,33 +792,88 @@ public class Global extends ImporterTopLevel {
return os;
}
private static String readFile(String filePath, String encoding)
private static String readUrl(String filePath, String charCoding,
boolean urlIsFile)
throws IOException
{
File f = new File(filePath);
long llength = f.length();
int length = (int)llength;
if (length != llength)
throw new IOException("Too big file size: "+llength);
if (length == 0) { return ""; }
FileInputStream fis = new FileInputStream(f);
int chunkLength;
InputStream is = null;
try {
Reader r;
if (encoding == null) {
r = new InputStreamReader(fis);
if (!urlIsFile) {
URL urlObj = new URL(filePath);
URLConnection uc = urlObj.openConnection();
is = uc.getInputStream();
chunkLength = uc.getContentLength();
if (chunkLength <= 0)
chunkLength = 1024;
if (charCoding == null) {
String type = uc.getContentType();
if (type != null) {
charCoding = getCharCodingFromType(type);
}
}
} else {
r = new InputStreamReader(fis, encoding);
File f = new File(filePath);
long length = f.length();
chunkLength = (int)length;
if (chunkLength != length)
throw new IOException("Too big file size: "+length);
if (chunkLength == 0) { return ""; }
is = new FileInputStream(f);
}
return readReader(r, length);
Reader r;
if (charCoding == null) {
r = new InputStreamReader(is);
} else {
r = new InputStreamReader(is, charCoding);
}
return readReader(r, chunkLength);
} finally {
fis.close();
if (is != null)
is.close();
}
}
private static String getCharCodingFromType(String type)
{
int i = type.indexOf(';');
if (i >= 0) {
int end = type.length();
++i;
while (i != end && type.charAt(i) <= ' ') {
++i;
}
String charset = "charset";
if (charset.regionMatches(true, 0, type, i, charset.length()))
{
i += charset.length();
while (i != end && type.charAt(i) <= ' ') {
++i;
}
if (i != end && type.charAt(i) == '=') {
++i;
while (i != end && type.charAt(i) <= ' ') {
++i;
}
if (i != end) {
// i is at the start of non-empty
// charCoding spec
while (type.charAt(end -1) <= ' ') {
--end;
}
return type.substring(i, end);
}
}
}
}
return null;
}
private static String readReader(Reader reader)
throws IOException
{