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authorDavid Robillard <d@drobilla.net>2020-08-16 12:42:58 +0200
committerDavid Robillard <d@drobilla.net>2020-10-27 13:13:58 +0100
commit2f2f791edb3ae4ccb825db548050461568570e03 (patch)
tree69be27d0d5fc7bac9897550185e02b579eaaf197 /src
parent45358052fb4fa254f06d0d704a27c5ed9608cc58 (diff)
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Simplify reader interface
Diffstat (limited to 'src')
-rw-r--r--src/n3.c5
-rw-r--r--src/reader.c117
-rw-r--r--src/serdi.c39
3 files changed, 71 insertions, 90 deletions
diff --git a/src/n3.c b/src/n3.c
index 22398604..38acdb46 100644
--- a/src/n3.c
+++ b/src/n3.c
@@ -1583,8 +1583,9 @@ read_nquadsDoc(SerdReader* reader)
if (peek_byte(reader) == EOF) {
break;
} else if (peek_byte(reader) == '@') {
- return r_err(reader, SERD_ERR_BAD_SYNTAX,
- "syntax does not support directives\n");
+ r_err(reader, SERD_ERR_BAD_SYNTAX,
+ "syntax does not support directives\n");
+ return SERD_ERR_BAD_SYNTAX;
}
// subject predicate object
diff --git a/src/reader.c b/src/reader.c
index eef4d95b..3784f297 100644
--- a/src/reader.c
+++ b/src/reader.c
@@ -21,11 +21,12 @@
#include <errno.h>
#include <stdarg.h>
-#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
+static SerdStatus serd_reader_prepare(SerdReader* reader);
+
SerdStatus
r_err(SerdReader* reader, SerdStatus st, const char* fmt, ...)
{
@@ -63,22 +64,6 @@ blank_id(SerdReader* reader)
return ref;
}
-/** fread-like wrapper for getc (which is faster). */
-static size_t
-serd_file_read_byte(void* buf, size_t size, size_t nmemb, void* stream)
-{
- (void)size;
- (void)nmemb;
-
- const int c = getc((FILE*)stream);
- if (c == EOF) {
- *((uint8_t*)buf) = 0;
- return 0;
- }
- *((uint8_t*)buf) = (uint8_t)c;
- return 1;
-}
-
Ref
push_node_padded(SerdReader* reader, size_t maxlen,
SerdType type, const char* str, size_t n_bytes)
@@ -160,9 +145,16 @@ read_statement(SerdReader* reader)
return read_n3_statement(reader);
}
-static SerdStatus
-read_doc(SerdReader* reader)
+SerdStatus
+serd_reader_read_document(SerdReader* reader)
{
+ if (!reader->source.prepared) {
+ SerdStatus st = serd_reader_prepare(reader);
+ if (st) {
+ return st;
+ }
+ }
+
return ((reader->syntax == SERD_NQUADS) ? read_nquadsDoc(reader)
: read_turtleTrigDoc(reader));
}
@@ -277,10 +269,20 @@ serd_reader_read_file(SerdReader* reader,
return SERD_ERR_UNKNOWN;
}
- SerdStatus ret = serd_reader_read_file_handle(reader, fd, path);
+ SerdStatus st = serd_reader_start_stream(
+ reader, (SerdSource)fread, (SerdStreamErrorFunc)ferror,
+ fd, path, SERD_PAGE_SIZE);
+
+ if (!st) {
+ st = serd_reader_read_document(reader);
+ }
+
+ const SerdStatus est = serd_reader_end_stream(reader);
+
fclose(fd);
free(path);
- return ret;
+
+ return st ? st : est;
}
static SerdStatus
@@ -301,30 +303,21 @@ skip_bom(SerdReader* me)
}
SerdStatus
-serd_reader_start_stream(SerdReader* reader,
- FILE* file,
- const char* name,
- bool bulk)
+serd_reader_start_stream(SerdReader* reader,
+ SerdSource read_func,
+ SerdStreamErrorFunc error_func,
+ void* stream,
+ const char* name,
+ size_t page_size)
{
- return serd_reader_start_source_stream(
- reader,
- bulk ? (SerdSource)fread : serd_file_read_byte,
- (SerdStreamErrorFunc)ferror,
- file,
- name,
- bulk ? SERD_PAGE_SIZE : 1);
+ return serd_byte_source_open_source(
+ &reader->source, read_func, error_func, stream, name, page_size);
}
SerdStatus
-serd_reader_start_source_stream(SerdReader* reader,
- SerdSource read_func,
- SerdStreamErrorFunc error_func,
- void* stream,
- const char* name,
- size_t page_size)
+serd_reader_start_string(SerdReader* reader, const char* utf8)
{
- return serd_byte_source_open_source(
- &reader->source, read_func, error_func, stream, name, page_size);
+ return serd_byte_source_open_string(&reader->source, utf8);
}
static SerdStatus
@@ -366,48 +359,12 @@ serd_reader_end_stream(SerdReader* reader)
}
SerdStatus
-serd_reader_read_file_handle(SerdReader* reader,
- FILE* file,
- const char* name)
-{
- return serd_reader_read_source(
- reader, (SerdSource)fread, (SerdStreamErrorFunc)ferror,
- file, name, SERD_PAGE_SIZE);
-}
-
-SerdStatus
-serd_reader_read_source(SerdReader* reader,
- SerdSource source,
- SerdStreamErrorFunc error,
- void* stream,
- const char* name,
- size_t page_size)
-{
- SerdStatus st = serd_reader_start_source_stream(
- reader, source, error, stream, name, page_size);
-
- if (st || (st = serd_reader_prepare(reader))) {
- serd_reader_end_stream(reader);
- return st;
- } else if ((st = read_doc(reader))) {
- serd_reader_end_stream(reader);
- return st;
- }
-
- return serd_reader_end_stream(reader);
-}
-
-SerdStatus
serd_reader_read_string(SerdReader* reader, const char* utf8)
{
- serd_byte_source_open_string(&reader->source, utf8);
+ serd_reader_start_string(reader, utf8);
- SerdStatus st = serd_reader_prepare(reader);
- if (!st) {
- st = read_doc(reader);
- }
+ const SerdStatus st = serd_reader_read_document(reader);
+ const SerdStatus est = serd_byte_source_close(&reader->source);
- serd_byte_source_close(&reader->source);
-
- return st;
+ return st ? st : est;
}
diff --git a/src/serdi.c b/src/serdi.c
index 47118e8f..99be638c 100644
--- a/src/serdi.c
+++ b/src/serdi.c
@@ -32,6 +32,7 @@
#include <errno.h>
#include <stdbool.h>
+#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
@@ -146,6 +147,22 @@ serd_fopen(const char* path, const char* mode)
return fd;
}
+/** fread-like wrapper for getc (which is faster). */
+static size_t
+serd_file_read_byte(void* buf, size_t size, size_t nmemb, void* stream)
+{
+ (void)size;
+ (void)nmemb;
+
+ const int c = getc((FILE*)stream);
+ if (c == EOF) {
+ *((uint8_t*)buf) = 0;
+ return 0;
+ }
+ *((uint8_t*)buf) = (uint8_t)c;
+ return 1;
+}
+
int
main(int argc, char** argv)
{
@@ -320,17 +337,23 @@ main(int argc, char** argv)
SerdStatus st = SERD_SUCCESS;
if (!from_file) {
- st = serd_reader_read_string(reader, input);
- } else if (bulk_read) {
- st = serd_reader_read_file_handle(reader, in_fd, in_name);
+ st = serd_reader_start_string(reader, input);
} else {
- st = serd_reader_start_stream(reader, in_fd, in_name, false);
- while (!st) {
- st = serd_reader_read_chunk(reader);
- }
- serd_reader_end_stream(reader);
+ st = serd_reader_start_stream(
+ reader,
+ bulk_read ? (SerdSource)fread : serd_file_read_byte,
+ (SerdStreamErrorFunc)ferror,
+ in_fd,
+ in_name,
+ bulk_read ? 4096 : 1);
+ }
+
+ if (!st) {
+ st = serd_reader_read_document(reader);
}
+ serd_reader_end_stream(reader);
+
serd_reader_free(reader);
serd_writer_finish(writer);
serd_writer_free(writer);