static ResourceKey fromPath()

in src/main/java/com/googlesource/gerrit/plugins/xdocs/XDocServlet.java [406:464]
51 lines of code
12 McCabe index (conditional complexity)

    static ResourceKey fromPath(String path) {
      String project;
      String file = null;
      String revision = null;
      String revisionB = null;
      DiffMode diffMode = DiffMode.NO_DIFF;

      if (!path.startsWith(PATH_PREFIX)) {
        // should not happen since this servlet is only registered to handle
        // paths that start with this prefix
        throw new IllegalStateException("path must start with '" + PATH_PREFIX + "'");
      }
      path = path.substring(PATH_PREFIX.length());

      int i = path.indexOf('/');
      if (i != -1 && i != path.length() - 1) {
        project = IdString.fromUrl(path.substring(0, i)).get();
        String rest = path.substring(i + 1);

        if (rest.startsWith("rev/")) {
          if (rest.length() > 4) {
            rest = rest.substring(4);
            i = rest.indexOf('/');
            if (i != -1 && i != path.length() - 1) {
              revision = IdString.fromUrl(rest.substring(0, i)).get();
              file = rest.substring(i + 1);
            } else {
              revision = IdString.fromUrl(rest).get();
            }
          }
        } else {
          file = rest;
        }

      } else {
        project = IdString.fromUrl(CharMatcher.is('/').trimTrailingFrom(path)).get();
      }

      if (revision != null) {
        if (revision.contains("<->")) {
          diffMode = DiffMode.UNIFIED;
          int p = revision.indexOf("<->");
          revisionB = revision.substring(p + 3);
          revision = Strings.emptyToNull(revision.substring(0, p));
        } else if (revision.contains("<-")) {
          diffMode = DiffMode.SIDEBYSIDE_A;
          int p = revision.indexOf("<-");
          revisionB = revision.substring(p + 2);
          revision = revision.substring(0, p);
        } else if (revision.contains("->")) {
          diffMode = DiffMode.SIDEBYSIDE_B;
          int p = revision.indexOf("->");
          revisionB = revision.substring(p + 2);
          revision = Strings.emptyToNull(revision.substring(0, p));
        }
      }

      return new ResourceKey(project, file, revision, revisionB, diffMode);
    }