protected static class AshdinArticleIterator extends SubTreeArticleIterator {
protected static Pattern PATTERN =
Pattern.compile("(/journals/[^/]+/[^/]+\\.)(pdf)$", Pattern.CASE_INSENSITIVE);
public AshdinArticleIterator(ArchivalUnit au, SubTreeArticleIterator.Spec spec) {
super(au, spec);
}
@Override
protected ArticleFiles createArticleFiles(CachedUrl cu) {
String url = cu.getUrl();
log.debug3("iterating url: " + url);
Matcher mat = PATTERN.matcher(url);
if (mat.find()) {
return processFullTextPdf(cu, mat);
}
log.warning("Mismatch between article iterator factory and article iterator: " + url);
return null;
}
protected ArticleFiles processFullTextPdf(CachedUrl cu, Matcher mat) {
ArticleFiles af = new ArticleFiles();
af.setRoleCu(ArticleFiles.ROLE_FULL_TEXT_PDF, cu);
String abstractUrl = mat.replaceAll("$1aspx");
CachedUrl abstractCu = cu.getArchivalUnit().makeCachedUrl(abstractUrl);
if (abstractCu.hasContent()) af.setFullTextCu(abstractCu);
else af.setFullTextCu(cu);
log.debug3("returning full text: " + af.getFullTextUrl());
return af;
}
}
public BePressArticleIterator(
ArchivalUnit au, SubTreeArticleIterator.Spec spec, boolean isSection) {
super(au, spec);
String volumeAsString = au.getConfiguration().get(ConfigParamDescr.VOLUME_NUMBER.getKey());
String journalAbbr = au.getConfiguration().get(ConfigParamDescr.JOURNAL_ABBR.getKey());
if (isSection) {
journalAbbr = journalAbbr + "/" + au.getConfiguration().get("journal_section");
}
// pick up issue level and lower (make (art)?[0-9]+ optional because a few au's have article
// at issue level
this.pattern =
Pattern.compile(
String.format(
"/%s/((([^0-9]+/)?(vol)?%s/(iss)?[0-9]+(/(art)?[0-9]+)?)|(vol%s/(?-i:[A-Z])[0-9]+))$",
journalAbbr, volumeAsString, volumeAsString),
Pattern.CASE_INSENSITIVE);
this.TOC_pattern =
Pattern.compile(
String.format("/%s/([^0-9]+/)?(vol)?%s/(iss)?[0-9]+$", journalAbbr, volumeAsString),
Pattern.CASE_INSENSITIVE);
}
protected static class MaffeyArticleIterator extends SubTreeArticleIterator {
protected Pattern ABSTRACT_PATTERN =
Pattern.compile("([^/]+)-article-a[0-9]+$", Pattern.CASE_INSENSITIVE);
public MaffeyArticleIterator(ArchivalUnit au, SubTreeArticleIterator.Spec spec) {
super(au, spec);
}
@Override
protected ArticleFiles createArticleFiles(CachedUrl cu) {
String url = cu.getUrl();
Matcher mat = ABSTRACT_PATTERN.matcher(url);
if (mat.find()) {
return processAbstract(cu, mat);
}
log.warning("Mismatch between article iterator factory and article iterator: " + url);
return null;
}
/*
* In order to find full text PDF you need to find the citation_pdf_url meta tag in the
* abstract html pull out the pdf url normalize it (reorder params...) and find the matching
* cached URL
*/
protected ArticleFiles processAbstract(CachedUrl absCu, Matcher absMat) {
NodeList nl = null;
ArticleFiles af = new ArticleFiles();
if (absCu != null && absCu.hasContent()) {
// TEMPORARY: set absCU as default full text CU in case there is
// no PDF CU with content; the current metadata manager currently
// uses only the full text CU, but this will change with the new
// metadata schema that can have multiple CUs for an article.
af.setFullTextCu(absCu);
af.setRoleCu(ArticleFiles.ROLE_ABSTRACT, absCu);
try {
InputStreamSource is =
new InputStreamSource(new Stream(absCu.getUnfilteredInputStream()));
Page pg = new Page(is);
Lexer lx = new Lexer(pg);
Parser parser = new Parser(lx);
Lexer.STRICT_REMARKS = false;
NodeFilter nf =
new NodeFilter() {
public boolean accept(Node node) {
if (!(node instanceof MetaTag)) return false;
MetaTag meta = (MetaTag) node;
if (!"citation_pdf_url".equalsIgnoreCase(meta.getMetaTagName())) return false;
return true;
}
};
nl = parser.extractAllNodesThatMatch(nf);
} catch (ParserException e) {
log.debug("Unable to parse abstract page html", e);
} catch (UnsupportedEncodingException e) {
log.debug("Bad encoding in abstact page html", e);
} finally {
absCu.release();
}
}
try {
if (nl != null) {
if (nl.size() > 0) {
// minimally encode URL to prevent URL constructor
// from stripping trailing spaces
String pdfUrlStr = ((MetaTag) nl.elementAt(0)).getMetaContent();
URL pdfUrl = new URL(UrlUtil.minimallyEncodeUrl(pdfUrlStr));
List<String> paramList = new ArrayList<String>();
paramList.add("fileType");
paramList.add("fileId");
paramList.add("fileName");
pdfUrl = reArrangeUrlParams(pdfUrl, paramList);
if (!pdfUrl.getHost().startsWith("www.")) {
pdfUrl = new URL(pdfUrl.getProtocol(), "www." + pdfUrl.getHost(), pdfUrl.getFile());
}
// note: must leave URL encoded because that's how we store URLs
CachedUrl pdfCu = au.makeCachedUrl(pdfUrl.toString());
if (pdfCu != null && pdfCu.hasContent()) {
// replace absCU with pdfCU if exists and has content
af.setFullTextCu(pdfCu);
af.setRoleCu(ArticleFiles.ROLE_FULL_TEXT_PDF, pdfCu);
}
}
}
} catch (MalformedURLException e) {
log.debug("Badly formatted pdf url link", e);
} catch (IllegalArgumentException e) {
log.debug("Badly formatted pdf url link", e);
}
return af;
}
private URL reArrangeUrlParams(URL url, List<String> paramList) throws MalformedURLException {
return reArrangeUrlParams(url, paramList, "&");
}
// Pulls parameters in paramList and arranges them in the same order as they
// are in paramList.
private URL reArrangeUrlParams(URL url, List<String> paramList, String paramDelim)
throws MalformedURLException {
String[] urlTokens = url.getQuery().split(paramDelim);
String newQuery = "";
if (urlTokens.length > 1) {
for (String param : paramList) {
for (int i = 0; i < urlTokens.length; i++) {
if (urlTokens[i].toLowerCase().startsWith(param.toLowerCase())) {
if (newQuery != "") newQuery = newQuery + "&";
newQuery = newQuery + urlTokens[i];
break;
}
}
}
}
return new URL(url.getProtocol(), url.getHost(), url.getPath() + "?" + newQuery);
}
}