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Convert the stdio output stream to use the new output stream interface.

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This commit is contained in:
Kristian Høgsberg 2006-06-12 03:08:51 -04:00
parent 3575c942f8
commit 45cbe055d9
1 changed files with 39 additions and 15 deletions
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54
src/cairo-output-stream.c
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@ -365,39 +365,46 @@ _cairo_output_stream_get_status (cairo_output_stream_t *stream)
/* Maybe this should be a configure time option, so embedded targets
* don't have to pull in stdio. */
static cairo_status_t
stdio_write (void *closure, const unsigned char *data, unsigned int length)
{
FILE *file = closure;
if (fwrite (data, 1, length, file) != length)
typedef struct _stdio_stream {
cairo_output_stream_t base;
FILE *file;
} stdio_stream_t;
static cairo_status_t
stdio_write (cairo_output_stream_t *base,
const unsigned char *data, unsigned int length)
{
stdio_stream_t *stream = (stdio_stream_t *) base;
if (fwrite (data, 1, length, stream->file) != length)
return CAIRO_STATUS_WRITE_ERROR;
return CAIRO_STATUS_SUCCESS;
}
static cairo_status_t
stdio_flush (void *closure)
stdio_flush (cairo_output_stream_t *base)
{
FILE *file = closure;
stdio_stream_t *stream = (stdio_stream_t *) base;
fflush (file);
fflush (stream->file);
if (ferror (file))
if (ferror (stream->file))
return CAIRO_STATUS_WRITE_ERROR;
else
return CAIRO_STATUS_SUCCESS;
}
static cairo_status_t
stdio_close (void *closure)
stdio_close (cairo_output_stream_t *base)
{
cairo_status_t status;
FILE *file = closure;
stdio_stream_t *stream = (stdio_stream_t *) base;
status = stdio_flush (closure);
status = stdio_flush (base);
fclose (file);
fclose (stream->file);
return status;
}
@ -405,20 +412,37 @@ stdio_close (void *closure)
cairo_output_stream_t *
_cairo_output_stream_create_for_file (FILE *file)
{
stdio_stream_t *stream;
if (file == NULL)
return (cairo_output_stream_t *) &cairo_output_stream_nil_write_error;
return _cairo_output_stream_create (stdio_write, stdio_flush, file);
stream = malloc (sizeof *stream);
if (stream == NULL)
return (cairo_output_stream_t *) &cairo_output_stream_nil;
_cairo_output_stream_init (&stream->base, stdio_write, stdio_flush);
stream->file = file;
return &stream->base;
}
cairo_output_stream_t *
_cairo_output_stream_create_for_filename (const char *filename)
{
stdio_stream_t *stream;
FILE *file;
file = fopen (filename, "wb");
if (file == NULL)
return (cairo_output_stream_t *) &cairo_output_stream_nil_write_error;
return _cairo_output_stream_create (stdio_write, stdio_close, file);
stream = malloc (sizeof *stream);
if (stream == NULL)
return (cairo_output_stream_t *) &cairo_output_stream_nil;
_cairo_output_stream_init (&stream->base, stdio_write, stdio_close);
stream->file = file;
return &stream->base;
}