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input_stream: added tag() method

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The tag() method reads a tag from the stream.  This replaces the
meta_name and meta_title attributes.
This commit is contained in:
Max Kellermann
2009-01-03 23:29:45 +01:00
parent 4be479d20c
commit 700bd44fda
6 changed files with 126 additions and 75 deletions
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12
src/input_stream.h
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@@ -29,6 +29,7 @@ struct input_plugin {
bool (*open)(struct input_stream *is, const char *url);
void (*close)(struct input_stream *is);
struct tag *(*tag)(struct input_stream *is);
int (*buffer)(struct input_stream *is);
size_t (*read)(struct input_stream *is, void *ptr, size_t size);
bool (*eof)(struct input_stream *is);
@@ -46,8 +47,6 @@ struct input_stream {
char *mime;
void *data;
char *meta_name;
char *meta_title;
void *archive;
};
@@ -67,6 +66,15 @@ input_stream_seek(struct input_stream *is, off_t offset, int whence);
void input_stream_close(struct input_stream *is);
bool input_stream_eof(struct input_stream *is);
/**
* Reads the tag from the stream.
*
* @return a tag object which must be freed with tag_free(), or NULL
* if the tag has not changed since the last call
*/
struct tag *
input_stream_tag(struct input_stream *is);
/* return value: -1 is error, 1 inidicates stuff was buffered, 0 means nothing
was buffered */
int input_stream_buffer(struct input_stream *is);