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authorDavid Robillard <d@drobilla.net>2011-08-21 04:44:37 +0000
committerDavid Robillard <d@drobilla.net>2011-08-21 04:44:37 +0000
commit59143950ece9b6de731e1b00d2ca7f6596ea7d39 (patch)
tree4b220343283b336d8c04c847a283c9eb018bdd26 /src
parent95697f076150957f01a84315775ab081011714bb (diff)
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Gracefully handle NULL reader sinks.
Add serd_strerror. Fix erroneously equal SERD_ERR_BAD_SYNTAX and SERD_ERR_BAD_ARG. git-svn-id: http://svn.drobilla.net/serd/trunk@211 490d8e77-9747-427b-9fa3-0b8f29cee8a0
Diffstat (limited to 'src')
-rw-r--r--src/error.c33
-rw-r--r--src/reader.c29
2 files changed, 51 insertions, 11 deletions
diff --git a/src/error.c b/src/error.c
new file mode 100644
index 00000000..cfab5a77
--- /dev/null
+++ b/src/error.c
@@ -0,0 +1,33 @@
+/*
+ Copyright 2011 David Robillard <http://drobilla.net>
+
+ Permission to use, copy, modify, and/or distribute this software for any
+ purpose with or without fee is hereby granted, provided that the above
+ copyright notice and this permission notice appear in all copies.
+
+ THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+
+#include "serd_internal.h"
+
+SERD_API
+const uint8_t*
+serd_strerror(SerdStatus st)
+{
+ switch (st) {
+ case SERD_SUCCESS: return (const uint8_t*)"Success";
+ case SERD_FAILURE: return (const uint8_t*)"Non-fatal failure";
+ case SERD_ERR_UNKNOWN: return (const uint8_t*)"Unknown error";
+ case SERD_ERR_BAD_SYNTAX: return (const uint8_t*)"Invalid syntax";
+ case SERD_ERR_BAD_ARG: return (const uint8_t*)"Invalid argument";
+ case SERD_ERR_NOT_FOUND: return (const uint8_t*)"Not found";
+ }
+ return (const uint8_t*)"Success"; // never reached
+}
+
diff --git a/src/reader.c b/src/reader.c
index 24802164..3cb2e3db 100644
--- a/src/reader.c
+++ b/src/reader.c
@@ -15,6 +15,7 @@
*/
#include <assert.h>
+#include <errno.h>
#include <stdarg.h>
#include <stdbool.h>
#include <stdint.h>
@@ -316,14 +317,15 @@ emit_statement(SerdReader* reader, SerdStatementFlags* flags,
const SerdNode datatype = public_node(reader, d);
const SerdNode lang = public_node_from_ref(reader, SERD_LITERAL, l);
object.flags = f;
- bool ret = !reader->statement_sink(reader->handle,
- *flags,
- &graph,
- &subject,
- &predicate,
- &object,
- &datatype,
- &lang);
+ bool ret = !reader->statement_sink
+ || !reader->statement_sink(reader->handle,
+ *flags,
+ &graph,
+ &subject,
+ &predicate,
+ &object,
+ &datatype,
+ &lang);
*flags = (*flags & SERD_ANON_CONT) ? SERD_ANON_CONT : 0;
return ret;
}
@@ -1326,7 +1328,9 @@ read_base(SerdReader* reader)
Ref uri;
TRY_RET(uri = read_uriref(reader));
const SerdNode uri_node = public_node_from_ref(reader, SERD_URI, uri);
- reader->base_sink(reader->handle, &uri_node);
+ if (reader->base_sink) {
+ reader->base_sink(reader->handle, &uri_node);
+ }
pop_string(reader, uri);
return true;
}
@@ -1339,7 +1343,7 @@ read_prefixID(SerdReader* reader)
// `@' is already eaten in read_directive
eat_string(reader, "prefix", 6);
TRY_RET(read_ws_plus(reader));
- bool ret = false;
+ bool ret = true;
Ref name = read_prefixName(reader);
if (!name) {
name = push_string(reader, "", 0);
@@ -1350,7 +1354,9 @@ read_prefixID(SerdReader* reader)
TRY_THROW(uri = read_uriref(reader));
const SerdNode name_node = public_node_from_ref(reader, SERD_LITERAL, name);
const SerdNode uri_node = public_node_from_ref(reader, SERD_URI, uri);
- ret = !reader->prefix_sink(reader->handle, &name_node, &uri_node);
+ if (reader->prefix_sink) {
+ ret = !reader->prefix_sink(reader->handle, &name_node, &uri_node);
+ }
pop_string(reader, uri);
except:
pop_string(reader, name);
@@ -1503,6 +1509,7 @@ serd_reader_read_file(SerdReader* reader,
FILE* fd = fopen((const char*)path, "r");
if (!fd) {
+ fprintf(stderr, "Error opening file %s (%s)\n", path, strerror(errno));
return SERD_ERR_UNKNOWN;
}
SerdStatus ret = serd_reader_read_file_handle(reader, fd, path);