/**
* Get the path from an activity id.
*
* @param id The ID for an activity.
* @param startPath The starting path.
* @return Given an id '2010-01-21-09-randombit' and startPath '/foo/bar' this will return
* '/foo/bar/2010/01/21/09/2010-01-21-09-randombit'.
*/
public static String getPathFromId(String id, String startPath) {
String[] hashes = org.sakaiproject.nakamura.util.StringUtils.split(id, '-');
StringBuilder sb;
if (startPath == null) {
sb = new StringBuilder();
} else {
startPath = PathUtils.normalizePath(startPath);
sb = new StringBuilder(startPath);
}
for (int i = 0; i < (hashes.length - 1); i++) {
sb.append("/").append(hashes[i]);
}
return sb.append("/").append(id).toString();
}
/**
* {@inheritDoc}
*
* @see org.sakaiproject.nakamura.api.resource.SubPathProducer#getSubPath()
*/
public String getSubPath() {
// Our id is something like 7eb256fd000d8fb33668138998251f605696b112
// This will return: /09/93/4d/50/7eb256fd000d8fb33668138998251f605696b112
return PathUtils.normalizePath(PathUtils.toSimpleShardPath("", id, ""));
}
/**
* {@inheritDoc}
*
* @see
* org.apache.sling.api.servlets.SlingAllMethodsServlet#doPost(org.apache.sling.api.SlingHttpServletRequest,
* org.apache.sling.api.SlingHttpServletResponse)
*/
@Override
protected void doPost(SlingHttpServletRequest request, SlingHttpServletResponse response)
throws ServletException, IOException {
// Check if the current user is logged in.
if (request.getRemoteUser().equals("anonymous")) {
response.sendError(HttpServletResponse.SC_UNAUTHORIZED, "Anonymous user cannot crop images.");
return;
}
RequestParameter imgParam = request.getRequestParameter("img");
RequestParameter saveParam = request.getRequestParameter("save");
RequestParameter xParam = request.getRequestParameter("x");
RequestParameter yParam = request.getRequestParameter("y");
RequestParameter widthParam = request.getRequestParameter("width");
RequestParameter heightParam = request.getRequestParameter("height");
RequestParameter dimensionsParam = request.getRequestParameter("dimensions");
if (imgParam == null
|| saveParam == null
|| xParam == null
|| yParam == null
|| widthParam == null
|| heightParam == null
|| dimensionsParam == null) {
response.sendError(
HttpServletResponse.SC_BAD_REQUEST,
"The following parameters are required: img, save, x, y, width, height, dimensions");
return;
}
try {
// Grab the session
ResourceResolver resourceResolver = request.getResourceResolver();
Session session = resourceResolver.adaptTo(Session.class);
String img = imgParam.getString();
String save = saveParam.getString();
int x = Integer.parseInt(xParam.getString());
int y = Integer.parseInt(yParam.getString());
int width = Integer.parseInt(widthParam.getString());
int height = Integer.parseInt(heightParam.getString());
String[] dimensionsList = StringUtils.split(dimensionsParam.getString(), ';');
List<Dimension> dimensions = new ArrayList<Dimension>();
for (String s : dimensionsList) {
Dimension d = new Dimension();
String[] size = StringUtils.split(s, 'x');
int diWidth = Integer.parseInt(size[0]);
int diHeight = Integer.parseInt(size[1]);
diWidth = checkIntBiggerThanZero(diWidth, 0);
diHeight = checkIntBiggerThanZero(diHeight, 0);
d.setSize(diWidth, diHeight);
dimensions.add(d);
}
x = checkIntBiggerThanZero(x, 0);
y = checkIntBiggerThanZero(y, 0);
width = checkIntBiggerThanZero(width, 0);
height = checkIntBiggerThanZero(height, 0);
// Make sure the save path is correct.
save = PathUtils.normalizePath(save) + "/";
String[] crop = CropItProcessor.crop(session, x, y, width, height, dimensions, img, save);
JSONWriter output = new JSONWriter(response.getWriter());
output.object();
output.key("files");
output.array();
for (String url : crop) {
output.value(url);
}
output.endArray();
output.endObject();
} catch (ArrayIndexOutOfBoundsException e) {
response.sendError(
HttpServletResponse.SC_BAD_REQUEST,
"The dimensions have to be specified in a widthxheight;widthxheight fashion.");
return;
} catch (NumberFormatException e) {
response.sendError(
HttpServletResponse.SC_BAD_REQUEST,
"The following parameters have to be integers: x, y, width, height. (Dimensions has to be of the form widthxheight;widthxheight");
return;
} catch (ImageException e) {
// Something went wrong..
logger.warn("ImageException e: " + e.getMessage());
response.sendError(e.getCode(), e.getMessage());
} catch (JSONException e) {
response.sendError(500, "Unable to output JSON.");
}
}