151 lines
3.9 KiB
C++
151 lines
3.9 KiB
C++
#ifndef lint
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static char rcsid[] = "@(#$Id: internfile.cpp,v 1.5 2005-04-05 09:35:35 dockes Exp $ (C) 2004 J.F.Dockes";
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#endif
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <errno.h>
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#include <string>
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#include <iostream>
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using namespace std;
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#include "internfile.h"
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#include "mimetype.h"
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#include "debuglog.h"
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#include "mimehandler.h"
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#include "execmd.h"
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#include "pathut.h"
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#include "wipedir.h"
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// Execute the command to uncompress a file into a temporary one.
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static bool uncompressfile(RclConfig *conf, const string& ifn,
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const list<string>& cmdv, const string& tdir,
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string& tfile)
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{
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// Make sure tmp dir is empty. we guarantee this to filters
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if (wipedir(tdir) != 0) {
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LOGERR(("uncompressfile: can't clear temp dir %s\n", tdir.c_str()));
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return false;
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}
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string cmd = find_filter(conf, cmdv.front());
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// Substitute file name and temp dir in command elements
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list<string>::const_iterator it = cmdv.begin();
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++it;
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list<string> args;
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for (; it != cmdv.end(); it++) {
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string s = *it;
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string ns;
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string::const_iterator it1;
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for (it1 = s.begin(); it1 != s.end();it1++) {
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if (*it1 == '%') {
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if (++it1 == s.end()) {
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ns += '%';
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break;
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}
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if (*it1 == '%')
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ns += '%';
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if (*it1 == 'f')
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ns += ifn;
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if (*it1 == 't')
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ns += tdir;
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} else {
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ns += *it1;
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}
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}
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args.push_back(ns);
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}
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// Execute command and retrieve output file name, check that it exists
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ExecCmd ex;
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int status = ex.doexec(cmd, args, 0, &tfile);
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if (status) {
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LOGERR(("uncompressfile: doexec: status 0x%x\n", status));
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rmdir(tdir.c_str());
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return false;
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}
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if (!tfile.empty() && tfile[tfile.length() - 1] == '\n')
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tfile.erase(tfile.length() - 1, 1);
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return true;
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}
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void FileInterner::tmpcleanup()
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{
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if (tdir.empty() || tfile.empty())
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return;
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if (unlink(tfile.c_str()) < 0) {
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LOGERR(("FileInterner::tmpcleanup: unlink(%s) errno %d\n",
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tfile.c_str(), errno));
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return;
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}
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}
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// Handler==0 on return says we're in error
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FileInterner::FileInterner(const std::string &f, RclConfig *cnf,
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const string& td)
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: fn(f), config(cnf), tdir(td), handler(0)
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{
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mime = mimetype(fn, config->getMimeMap());
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if (mime.empty()) {
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// No mime type: not listed in our map, or present in stop list
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LOGDEB(("FileInterner::FileInterner: (no mime) [%s]\n", fn.c_str()));
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return;
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}
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// First check for a compressed file. If so, create a temporary
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// uncompressed file, and rerun the mime type identification, then do the
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// rest with the temp file.
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list<string>ucmd;
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if (getUncompressor(mime, config->getMimeConf(), ucmd)) {
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if (!uncompressfile(config, fn, ucmd, tdir, tfile)) {
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return;
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}
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LOGDEB(("internfile: after ucomp: tdir %s, tfile %s\n",
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tdir.c_str(), tfile.c_str()));
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fn = tfile;
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mime = mimetype(fn, config->getMimeMap());
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if (mime.empty()) {
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// No mime type ?? pass on.
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LOGDEB(("internfile: (no mime) [%s]\n", fn.c_str()));
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return;
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}
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}
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// Look for appropriate handler
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handler = getMimeHandler(mime, config->getMimeConf());
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if (!handler) {
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// No handler for this type, for now :(
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LOGDEB(("FileInterner::FileInterner: %s: no handler\n", mime.c_str()));
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return;
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}
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LOGDEB(("FileInterner::FileInterner: %s [%s]\n",mime.c_str(), fn.c_str()));
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}
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FileInterner::Status FileInterner::internfile(Rcl::Doc& doc, string& ipath)
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{
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if (!handler)
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return FIError;
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// Turn file into a document. The document has fields for title, body
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// etc., all text converted to utf8
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MimeHandler::Status mhs = handler->worker(config, fn, mime, doc, ipath);
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FileInterner::Status ret = FIError;
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switch (mhs) {
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case MimeHandler::MHError: break;
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case MimeHandler::MHDone: ret = FIDone;break;
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case MimeHandler::MHAgain: ret = FIAgain;break;
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}
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doc.mimetype = mime;
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return ret;
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}
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FileInterner::~FileInterner()
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{
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delete handler;
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handler = 0;
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tmpcleanup();
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}
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