+ }
+}
+
+// Check for a PDF header on this stream. Skip past some garbage
+// if necessary.
+void PDFDoc::checkHeader() {
+ char hdrBuf[headerSearchSize+1];
+ char *p;
+ double version;
+ int i;
+
+ for (i = 0; i < headerSearchSize; ++i) {
+ hdrBuf[i] = str->getChar();
+ }
+ hdrBuf[headerSearchSize] = '\0';
+ for (i = 0; i < headerSearchSize - 5; ++i) {
+ if (!strncmp(&hdrBuf[i], "%PDF-", 5)) {
+ break;
+ }
+ }
+ if (i >= headerSearchSize - 5) {
+ error(-1, "May not be a PDF file (continuing anyway)");
+ return;
+ }
+ str->moveStart(i);
+ p = strtok(&hdrBuf[i+5], " \t\n\r");
+ version = atof(p);
+ if (!(hdrBuf[i+5] >= '0' && hdrBuf[i+5] <= '9') ||
+ version > pdfVersionNum + 0.0001) {
+ error(-1, "PDF version %s -- xpdf supports version %s"
+ " (continuing anyway)", p, pdfVersion);
+ }