* mu-cmd-find, mu-cmd-cfind, mu-cmd-index: use GError for error reporting
This commit is contained in:
Dirk-Jan C. Binnema
@ -47,50 +47,34 @@
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static gboolean output_links (MuMsgIter *iter, const char* linksdir,
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gboolean clearlinks,size_t *count);
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gboolean clearlinks, GError **err);
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static gboolean output_sexp (MuMsgIter *iter, gboolean threads,
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gboolean include_unreadable, size_t *count);
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gboolean include_unreadable, GError **err);
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static gboolean output_xml (MuMsgIter *iter,gboolean include_unreadable,
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size_t *count);
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GError **err);
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static gboolean output_plain (MuMsgIter *iter, const char *fields,
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gboolean summary,gboolean threads,
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gboolean color, gboolean include_unreadable,
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size_t *count);
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static void
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upgrade_warning (void)
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{
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g_warning ("the database needs to be updated to version %s\n",
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MU_STORE_SCHEMA_VERSION);
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g_message ("please run 'mu index --rebuild' (see the man page)");
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}
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GError **err);
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static gboolean
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print_xapian_query (MuQuery *xapian, const gchar *query, size_t *count)
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print_xapian_query (MuQuery *xapian, const gchar *query, GError **err)
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{
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char *querystr;
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GError *err;
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err = NULL;
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querystr = mu_query_as_string (xapian, query, &err);
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if (!querystr) {
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g_warning ("error: %s", err->message);
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g_error_free (err);
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querystr = mu_query_as_string (xapian, query, err);
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if (!querystr)
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return FALSE;
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}
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g_print ("%s\n", querystr);
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g_free (querystr);
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*count = 1;
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return TRUE;
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}
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/* returns NULL if there is an error */
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/* returns MU_MSG_FIELD_ID_NONE if there is an error */
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static MuMsgFieldId
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sort_field_from_string (const char* fieldstr)
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sort_field_from_string (const char* fieldstr, GError **err)
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{
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MuMsgFieldId mfid;
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@ -102,29 +86,27 @@ sort_field_from_string (const char* fieldstr)
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mfid = mu_msg_field_id_from_shortcut(fieldstr[0],
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FALSE);
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if (mfid == MU_MSG_FIELD_ID_NONE)
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g_warning ("not a valid sort field: '%s'\n",
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fieldstr);
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g_set_error (err, 0, MU_ERROR_IN_PARAMETERS,
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"not a valid sort field: '%s'\n", fieldstr);
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return mfid;
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}
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static gboolean
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output_query_results (MuMsgIter *iter, MuConfig *opts, size_t *count)
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output_query_results (MuMsgIter *iter, MuConfig *opts, GError **err)
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{
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switch (opts->format) {
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case MU_CONFIG_FORMAT_LINKS:
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return output_links (iter, opts->linksdir, opts->clearlinks,
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count);
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return output_links (iter, opts->linksdir, opts->clearlinks, err);
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case MU_CONFIG_FORMAT_PLAIN:
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return output_plain (iter, opts->fields, opts->summary,
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opts->threads, opts->color,
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opts->include_unreadable,
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count);
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opts->include_unreadable, err);
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case MU_CONFIG_FORMAT_XML:
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return output_xml (iter, opts->include_unreadable, count);
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return output_xml (iter, opts->include_unreadable, err);
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case MU_CONFIG_FORMAT_SEXP:
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return output_sexp (iter, opts->threads,
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opts->include_unreadable, count);
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opts->include_unreadable, err);
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default:
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g_assert_not_reached ();
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return FALSE;
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@ -133,49 +115,36 @@ output_query_results (MuMsgIter *iter, MuConfig *opts, size_t *count)
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static MuMsgIter*
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run_query (MuQuery *xapian, const gchar *query, MuConfig *opts, size_t *count)
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run_query (MuQuery *xapian, const gchar *query, MuConfig *opts,
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GError **err)
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{
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GError *err;
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MuMsgIter *iter;
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MuMsgFieldId sortid;
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sortid = MU_MSG_FIELD_ID_NONE;
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if (opts->sortfield) {
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sortid = sort_field_from_string (opts->sortfield);
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sortid = sort_field_from_string (opts->sortfield, err);
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if (sortid == MU_MSG_FIELD_ID_NONE) /* error occured? */
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return FALSE;
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}
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err = NULL;
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iter = mu_query_run (xapian, query, opts->threads, sortid,
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opts->descending ? FALSE : TRUE,
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&err);
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if (!iter) {
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g_warning ("error: %s", err->message);
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g_error_free (err);
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return NULL;
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}
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opts->descending ? FALSE : TRUE, err);
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return iter;
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}
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static gboolean
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process_query (MuQuery *xapian, const gchar *query, MuConfig *opts,
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size_t *count)
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process_query (MuQuery *xapian, const gchar *query, MuConfig *opts, GError **err)
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{
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MuMsgIter *iter;
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gboolean rv;
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iter = run_query (xapian, query, opts, count);
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iter = run_query (xapian, query, opts, err);
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if (!iter)
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return FALSE;
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rv = output_query_results (iter, opts, count);
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if (rv && count && *count == 0)
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g_warning ("no matching messages found");
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rv = output_query_results (iter, opts, err);
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mu_msg_iter_destroy (iter);
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return rv;
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@ -183,15 +152,15 @@ process_query (MuQuery *xapian, const gchar *query, MuConfig *opts,
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static gboolean
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exec_cmd (const char *path, const char *cmd)
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exec_cmd (const char *path, const char *cmd, GError **err)
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{
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gint status;
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GError *err;
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char *cmdline, *escpath;
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gboolean rv;
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if (access (path, R_OK) != 0) {
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g_warning ("cannot read %s: %s", path, strerror(errno));
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g_set_error (err, 0, MU_ERROR_FILE_CANNOT_READ,
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"cannot read %s: %s", path, strerror(errno));
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return FALSE;
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}
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@ -200,32 +169,26 @@ exec_cmd (const char *path, const char *cmd)
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cmdline = g_strdup_printf ("%s %s", cmd, escpath);
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err = NULL;
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rv = g_spawn_command_line_sync (cmdline, NULL, NULL,
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&status, &err);
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&status, err);
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g_free (cmdline);
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g_free (escpath);
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if (!rv) {
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g_warning ("command returned %d on %s: %s\n",
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status, path, err->message);
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g_error_free (err);
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return FALSE;
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}
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return TRUE;
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return rv;
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}
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static gboolean
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exec_cmd_on_query (MuQuery *xapian, const gchar *query, MuConfig *opts,
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size_t *count)
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GError **err)
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{
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MuMsgIter *iter;
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gboolean rv;
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size_t count;
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if (!(iter = run_query (xapian, query, opts, count)))
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if (!(iter = run_query (xapian, query, opts, err)))
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return FALSE;
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for (rv = TRUE, *count = 0; !mu_msg_iter_is_done (iter);
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for (rv = TRUE, count = 0; !mu_msg_iter_is_done (iter);
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mu_msg_iter_next(iter)) {
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const char *path;
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MuMsg *msg;
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@ -240,23 +203,25 @@ exec_cmd_on_query (MuQuery *xapian, const gchar *query, MuConfig *opts,
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continue;
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}
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rv = exec_cmd (path, opts->exec);
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rv = exec_cmd (path, opts->exec, err);
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if (rv)
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++*count;
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++count;
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}
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if (rv && count && *count == 0)
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g_warning ("no matching messages found");
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if (count == 0) {
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g_set_error (err, 0, MU_ERROR_NO_MATCHES,
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"no matches for search expression");
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return FALSE;
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}
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mu_msg_iter_destroy (iter);
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return rv;
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}
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static gboolean
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format_params_valid (MuConfig *opts)
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format_params_valid (MuConfig *opts, GError **err)
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{
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switch (opts->format) {
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case MU_CONFIG_FORMAT_PLAIN:
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@ -266,18 +231,21 @@ format_params_valid (MuConfig *opts)
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case MU_CONFIG_FORMAT_XQUERY:
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break;
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default:
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g_warning ("invalid output format %s",
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opts->formatstr ? opts->formatstr : "<none>");
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g_set_error (err, 0, MU_ERROR_IN_PARAMETERS,
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"invalid output format %s",
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opts->formatstr ? opts->formatstr : "<none>");
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return FALSE;
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}
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if (opts->format == MU_CONFIG_FORMAT_LINKS && !opts->linksdir) {
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g_warning ("missing --linksdir argument");
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g_set_error (err, 0, MU_ERROR_IN_PARAMETERS,
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"missing --linksdir argument");
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return FALSE;
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}
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if (opts->linksdir && opts->format != MU_CONFIG_FORMAT_LINKS) {
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g_warning ("--linksdir is only valid with --format=links");
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g_set_error (err, 0, MU_ERROR_IN_PARAMETERS,
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"--linksdir is only valid with --format=links");
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return FALSE;
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}
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@ -285,7 +253,7 @@ format_params_valid (MuConfig *opts)
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}
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static gboolean
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query_params_valid (MuConfig *opts)
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query_params_valid (MuConfig *opts, GError **err)
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{
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const gchar *xpath;
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@ -294,14 +262,13 @@ query_params_valid (MuConfig *opts)
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if (mu_util_check_dir (xpath, TRUE, FALSE))
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return TRUE;
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g_warning ("'%s' is not a readable Xapian directory\n", xpath);
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g_message ("did you run 'mu index'?");
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g_set_error (err, 0, MU_ERROR_FILE_CANNOT_READ,
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"'%s' is not a readable Xapian directory", xpath);
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return FALSE;
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}
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static gchar*
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resolve_bookmark (MuConfig *opts)
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resolve_bookmark (MuConfig *opts, GError **err)
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{
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MuBookmarks *bm;
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char* val;
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@ -310,36 +277,38 @@ resolve_bookmark (MuConfig *opts)
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bmfile = mu_runtime_path (MU_RUNTIME_PATH_BOOKMARKS);
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bm = mu_bookmarks_new (bmfile);
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if (!bm) {
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g_warning ("failed to open bookmarks file '%s'", bmfile);
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g_set_error (err, 0, MU_ERROR_FILE_CANNOT_OPEN,
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"failed to open bookmarks file '%s'", bmfile);
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return FALSE;
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}
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val = (gchar*)mu_bookmarks_lookup (bm, opts->bookmark);
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if (!val)
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g_warning ("bookmark '%s' not found", opts->bookmark);
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g_set_error (err, 0, MU_ERROR_NO_MATCHES,
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"bookmark '%s' not found", opts->bookmark);
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else
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val = g_strdup (val);
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mu_bookmarks_destroy (bm);
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return val;
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}
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static gchar*
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get_query (MuConfig *opts)
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get_query (MuConfig *opts, GError **err)
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{
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gchar *query, *bookmarkval;
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/* params[0] is 'find', actual search params start with [1] */
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if (!opts->bookmark && !opts->params[1]) {
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g_warning ("usage: mu find [options] search-expression");
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return FALSE;
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g_set_error (err, 0, MU_ERROR_IN_PARAMETERS,
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"error in parameters");
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return NULL;
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}
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bookmarkval = NULL;
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if (opts->bookmark) {
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bookmarkval = resolve_bookmark (opts);
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bookmarkval = resolve_bookmark (opts, err);
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if (!bookmarkval)
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return NULL;
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}
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@ -357,41 +326,33 @@ get_query (MuConfig *opts)
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return query;
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}
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static gboolean
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db_is_ready (MuStore *store)
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static MuQuery*
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get_query_obj (MuStore *store, GError **err)
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{
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if (mu_store_count (store) == 0) {
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g_warning ("database is empty; use 'mu index' to "
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"add messages");
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return FALSE;
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MuQuery *mquery;
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unsigned count;
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count = mu_store_count (store, err);
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if (count == (unsigned)-1)
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return NULL;
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if (count == 0) {
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g_set_error (err, 0, MU_ERROR_XAPIAN_IS_EMPTY,
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"the database is empty");
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return NULL;
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}
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if (mu_store_needs_upgrade (store)) {
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upgrade_warning ();
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return FALSE;
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}
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return TRUE;
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}
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static MuQuery*
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get_query_obj (MuStore *store)
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{
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GError *err;
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MuQuery *mquery;
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if (!db_is_ready(store)) {
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g_warning ("database is not ready");
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g_set_error (err, 0, MU_ERROR_XAPIAN_NOT_UP_TO_DATE,
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"the database is not up-to-date");
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return NULL;
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}
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err = NULL;
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mquery = mu_query_new (store, &err);
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if (!mquery) {
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g_warning ("error: %s", err->message);
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g_error_free (err);
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mquery = mu_query_new (store, err);
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if (!mquery)
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return NULL;
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}
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return mquery;
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}
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@ -452,10 +413,10 @@ link_message (const char *src, const char *destdir)
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static gboolean
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output_links (MuMsgIter *iter, const char* linksdir,
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gboolean clearlinks, size_t *count)
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output_links (MuMsgIter *iter, const char* linksdir, gboolean clearlinks,
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GError **err)
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{
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size_t okcount, errcount;
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size_t count, errcount;
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MuMsgIter *myiter;
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g_return_val_if_fail (iter, FALSE);
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@ -465,7 +426,7 @@ output_links (MuMsgIter *iter, const char* linksdir,
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if (!create_linksdir_maybe (linksdir, clearlinks))
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return FALSE;
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for (myiter = iter, errcount = okcount = 0; !mu_msg_iter_is_done (myiter);
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for (myiter = iter, count = errcount = 0; !mu_msg_iter_is_done (myiter);
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mu_msg_iter_next (myiter)) {
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const char* path;
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@ -477,14 +438,22 @@ output_links (MuMsgIter *iter, const char* linksdir,
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path = mu_msg_get_path (msg);
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if (access (path, R_OK) == 0) /* only link to readable */
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link_message (path, linksdir) ? ++okcount : ++errcount;
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link_message (path, linksdir) ? ++count : ++errcount;
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}
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if (errcount > 0) {
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g_set_error (err, 0, MU_ERROR_FILE_CANNOT_LINK,
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"error linking %u message(s)", errcount);
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return FALSE;
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}
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if (count) {
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g_set_error (err, 0, MU_ERROR_NO_MATCHES,
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"no existing matches for search expression");
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return FALSE;
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}
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if (errcount > 0)
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g_warning ("error linking some of the messages");
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if (count)
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*count = okcount;
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return TRUE;
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}
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@ -628,14 +597,14 @@ thread_indent (MuMsgIter *iter)
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static size_t
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static void
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output_plain_fields (MuMsg *msg, const char *fields,
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gboolean color, gboolean threads)
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{
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const char* myfields;
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size_t len;
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int nonempty;
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for (myfields = fields, len = 0; *myfields; ++myfields) {
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for (myfields = fields, nonempty = 0; *myfields; ++myfields) {
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MuMsgFieldId mfid;
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mfid = mu_msg_field_id_from_shortcut (*myfields, FALSE);
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@ -643,35 +612,35 @@ output_plain_fields (MuMsg *msg, const char *fields,
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if (mfid == MU_MSG_FIELD_ID_NONE ||
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(!mu_msg_field_xapian_value (mfid) &&
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!mu_msg_field_xapian_contact (mfid)))
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len += printf ("%c", *myfields);
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nonempty += printf ("%c", *myfields);
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else {
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ansi_color_maybe (mfid, color);
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len += mu_util_fputs_encoded
|
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nonempty += mu_util_fputs_encoded
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(display_field (msg, mfid), stdout);
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ansi_reset_maybe (mfid, color);
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}
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}
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return len;
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if (nonempty)
|
||||
fputs ("\n", stdout);
|
||||
}
|
||||
|
||||
static gboolean
|
||||
output_plain (MuMsgIter *iter, const char *fields, gboolean summary,
|
||||
gboolean threads, gboolean color, gboolean include_unreadable,
|
||||
size_t *count)
|
||||
GError **err)
|
||||
{
|
||||
MuMsgIter *myiter;
|
||||
size_t mycount;
|
||||
size_t count;
|
||||
|
||||
g_return_val_if_fail (iter, FALSE);
|
||||
g_return_val_if_fail (fields, FALSE);
|
||||
|
||||
for (myiter = iter, mycount = 0; !mu_msg_iter_is_done (myiter);
|
||||
for (myiter = iter, count = 0; !mu_msg_iter_is_done (myiter);
|
||||
mu_msg_iter_next (myiter)) {
|
||||
size_t len;
|
||||
MuMsg *msg;
|
||||
|
||||
MuMsg *msg;
|
||||
msg = mu_msg_iter_get_msg_floating (iter); /* don't unref */
|
||||
if (!msg)
|
||||
continue;
|
||||
@ -687,17 +656,19 @@ output_plain (MuMsgIter *iter, const char *fields, gboolean summary,
|
||||
if (threads)
|
||||
thread_indent (iter);
|
||||
|
||||
len = output_plain_fields (msg, fields, color, threads);
|
||||
output_plain_fields (msg, fields, color, threads);
|
||||
|
||||
g_print (len > 0 ? "\n" : "");
|
||||
if (summary)
|
||||
print_summary (msg);
|
||||
|
||||
++mycount;
|
||||
++count;
|
||||
}
|
||||
|
||||
if (count)
|
||||
*count = mycount;
|
||||
if (count == 0) {
|
||||
g_set_error (err, 0, MU_ERROR_NO_MATCHES,
|
||||
"no existing matches for search expression");
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
return TRUE;
|
||||
}
|
||||
@ -719,14 +690,14 @@ print_attr_xml (const char* elm, const char *str)
|
||||
|
||||
static gboolean
|
||||
output_sexp (MuMsgIter *iter, gboolean threads,
|
||||
gboolean include_unreadable, size_t *count)
|
||||
gboolean include_unreadable, GError **err)
|
||||
{
|
||||
MuMsgIter *myiter;
|
||||
size_t mycount;
|
||||
size_t count;
|
||||
|
||||
g_return_val_if_fail (iter, FALSE);
|
||||
|
||||
for (myiter = iter, mycount = 0; !mu_msg_iter_is_done (myiter);
|
||||
for (myiter = iter, count = 0; !mu_msg_iter_is_done (myiter);
|
||||
mu_msg_iter_next (myiter)) {
|
||||
|
||||
MuMsg *msg;
|
||||
@ -748,12 +719,14 @@ output_sexp (MuMsgIter *iter, gboolean threads,
|
||||
fputs (sexp, stdout);
|
||||
g_free (sexp);
|
||||
|
||||
++mycount;
|
||||
++count;
|
||||
}
|
||||
|
||||
|
||||
if (count)
|
||||
*count = mycount;
|
||||
if (count == 0) {
|
||||
g_set_error (err, 0, MU_ERROR_NO_MATCHES,
|
||||
"no existing matches for search expression");
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
return TRUE;
|
||||
}
|
||||
@ -778,17 +751,17 @@ output_xml_msg (MuMsg *msg)
|
||||
|
||||
|
||||
static gboolean
|
||||
output_xml (MuMsgIter *iter, gboolean include_unreadable, size_t *count)
|
||||
output_xml (MuMsgIter *iter, gboolean include_unreadable, GError **err)
|
||||
{
|
||||
MuMsgIter *myiter;
|
||||
size_t mycount;
|
||||
size_t count;
|
||||
|
||||
g_return_val_if_fail (iter, FALSE);
|
||||
|
||||
g_print ("<?xml version=\"1.0\" encoding=\"UTF-8\" ?>\n");
|
||||
g_print ("<messages>\n");
|
||||
|
||||
for (myiter = iter, mycount = 0; !mu_msg_iter_is_done (myiter);
|
||||
for (myiter = iter, count = 0; !mu_msg_iter_is_done (myiter);
|
||||
mu_msg_iter_next (myiter)) {
|
||||
|
||||
GError *err;
|
||||
@ -805,50 +778,78 @@ output_xml (MuMsgIter *iter, gboolean include_unreadable, size_t *count)
|
||||
continue;
|
||||
|
||||
output_xml_msg (msg);
|
||||
++mycount;
|
||||
++count;
|
||||
}
|
||||
g_print ("</messages>\n");
|
||||
|
||||
if (count)
|
||||
*count = mycount;
|
||||
if (count == 0) {
|
||||
g_set_error (err, 0, MU_ERROR_NO_MATCHES,
|
||||
"no existing matches for search expression");
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
static gboolean
|
||||
execute_find (MuStore *store, MuConfig *opts, GError **err)
|
||||
{
|
||||
char *query_str;
|
||||
MuQuery *oracle;
|
||||
gboolean rv;
|
||||
|
||||
oracle = get_query_obj(store, err);
|
||||
if (!oracle)
|
||||
return FALSE;
|
||||
|
||||
query_str = get_query (opts, err);
|
||||
if (!query_str) {
|
||||
mu_query_destroy (oracle);
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
if (opts->format == MU_CONFIG_FORMAT_XQUERY)
|
||||
rv = print_xapian_query (oracle, query_str, err);
|
||||
else if (opts->exec)
|
||||
rv = exec_cmd_on_query (oracle, query_str, opts, err);
|
||||
else
|
||||
rv = process_query (oracle, query_str, opts, err);
|
||||
|
||||
mu_query_destroy (oracle);
|
||||
g_free (query_str);
|
||||
|
||||
return rv;
|
||||
}
|
||||
|
||||
static void
|
||||
show_usage (void)
|
||||
{
|
||||
const char *usage_str =
|
||||
"usage: mu find [options] <search expression>\n";
|
||||
g_message ("%s", usage_str);
|
||||
}
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
MuError
|
||||
mu_cmd_find (MuStore *store, MuConfig *opts)
|
||||
mu_cmd_find (MuStore *store, MuConfig *opts, GError **err)
|
||||
{
|
||||
MuQuery *xapian;
|
||||
gboolean rv;
|
||||
gchar *query;
|
||||
size_t count = 0;
|
||||
|
||||
g_return_val_if_fail (opts, MU_ERROR_INTERNAL);
|
||||
g_return_val_if_fail (opts->cmd == MU_CONFIG_CMD_FIND,
|
||||
MU_ERROR_INTERNAL);
|
||||
|
||||
if (!query_params_valid (opts) || !format_params_valid(opts))
|
||||
return MU_ERROR_IN_PARAMETERS;
|
||||
if (!query_params_valid (opts, err) || !format_params_valid(opts, err)) {
|
||||
|
||||
xapian = get_query_obj(store);
|
||||
query = get_query (opts);
|
||||
if (MU_G_ERROR_CODE(err) == MU_ERROR_IN_PARAMETERS)
|
||||
show_usage ();
|
||||
|
||||
if (!xapian ||!query)
|
||||
return MU_ERROR_INTERNAL;
|
||||
return MU_G_ERROR_CODE (err);
|
||||
}
|
||||
|
||||
if (opts->format == MU_CONFIG_FORMAT_XQUERY)
|
||||
rv = print_xapian_query (xapian, query, &count);
|
||||
else if (opts->exec)
|
||||
rv = exec_cmd_on_query (xapian, query, opts, &count);
|
||||
if (!execute_find (store, opts, err))
|
||||
return MU_G_ERROR_CODE(err);
|
||||
else
|
||||
rv = process_query (xapian, query, opts, &count);
|
||||
|
||||
mu_query_destroy (xapian);
|
||||
g_free (query);
|
||||
|
||||
if (!rv)
|
||||
return MU_ERROR;
|
||||
|
||||
return count == 0 ? MU_ERROR_NO_MATCHES : MU_OK;
|
||||
return MU_OK;
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user