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authorØyvind Harboe <oyvind.harboe@zylin.com>2010-09-28 15:37:56 +0200
committerØyvind Harboe <oyvind.harboe@zylin.com>2010-09-29 08:43:27 +0200
commit3a693ef526575633cc350a69aa1a5d1f08e64c46 (patch)
tree6af64277137ac59254bf20d7d3ca175728a709bd /src/helper
parentecad76061f6edff5db67ad05e6514dff6cd6efc7 (diff)
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fileio: refactor struct fileio to be an opaque structure
Signed-off-by: Øyvind Harboe <oyvind.harboe@zylin.com>
Diffstat (limited to 'src/helper')
-rw-r--r--src/helper/fileio.c58
-rw-r--r--src/helper/fileio.h11
2 files changed, 47 insertions, 22 deletions
diff --git a/src/helper/fileio.c b/src/helper/fileio.c
index ba62397c..7c862e47 100644
--- a/src/helper/fileio.c
+++ b/src/helper/fileio.c
@@ -31,7 +31,16 @@
#include "configuration.h"
#include "fileio.h"
-static inline int fileio_open_local(struct fileio *fileio)
+struct fileio_internal {
+ const char *url;
+ ssize_t size;
+ enum fileio_type type;
+ enum fileio_access access;
+ FILE *file;
+};
+
+static inline int fileio_close_local(struct fileio_internal *fileio);
+static inline int fileio_open_local(struct fileio_internal *fileio)
{
char file_access[4];
@@ -86,7 +95,7 @@ static inline int fileio_open_local(struct fileio *fileio)
if ((fileio->size < 0)||(result < 0)||(result2 < 0))
{
- fileio_close(fileio);
+ fileio_close_local(fileio);
return ERROR_FILEIO_OPERATION_FAILED;
}
}
@@ -98,10 +107,13 @@ static inline int fileio_open_local(struct fileio *fileio)
return ERROR_OK;
}
-int fileio_open(struct fileio *fileio, const char *url, enum fileio_access access_type, enum fileio_type type)
+int fileio_open(struct fileio *fileio_p, const char *url, enum fileio_access access_type, enum fileio_type type)
{
int retval = ERROR_OK;
+ struct fileio_internal *fileio = malloc(sizeof(struct fileio_internal));
+ fileio_p->fp = fileio;
+
fileio->type = type;
fileio->access = access_type;
fileio->url = strdup(url);
@@ -111,7 +123,7 @@ int fileio_open(struct fileio *fileio, const char *url, enum fileio_access acces
return retval;
}
-static inline int fileio_close_local(struct fileio *fileio)
+static inline int fileio_close_local(struct fileio_internal *fileio)
{
int retval;
if ((retval = fclose(fileio->file)) != 0)
@@ -131,21 +143,26 @@ static inline int fileio_close_local(struct fileio *fileio)
return ERROR_OK;
}
-int fileio_close(struct fileio *fileio)
+int fileio_close(struct fileio *fileio_p)
{
int retval;
+ struct fileio_internal *fileio = fileio_p->fp;
retval = fileio_close_local(fileio);
free((void*)fileio->url);
fileio->url = NULL;
+ free(fileio);
+ fileio_p->fp = NULL;
+
return retval;
}
-int fileio_seek(struct fileio *fileio, size_t position)
+int fileio_seek(struct fileio *fileio_p, size_t position)
{
int retval;
+ struct fileio_internal *fileio = fileio_p->fp;
if ((retval = fseek(fileio->file, position, SEEK_SET)) != 0)
{
LOG_ERROR("couldn't seek file %s: %s", fileio->url, strerror(errno));
@@ -155,7 +172,7 @@ int fileio_seek(struct fileio *fileio, size_t position)
return ERROR_OK;
}
-static int fileio_local_read(struct fileio *fileio,
+static int fileio_local_read(struct fileio_internal *fileio,
size_t size, void *buffer, size_t *size_read)
{
ssize_t retval = fread(buffer, 1, size, fileio->file);
@@ -163,16 +180,18 @@ static int fileio_local_read(struct fileio *fileio,
return (retval < 0) ? retval : ERROR_OK;
}
-int fileio_read(struct fileio *fileio, size_t size, void *buffer,
+int fileio_read(struct fileio *fileio_p, size_t size, void *buffer,
size_t *size_read)
{
+ struct fileio_internal *fileio = fileio_p->fp;
return fileio_local_read(fileio, size, buffer, size_read);
}
-int fileio_read_u32(struct fileio *fileio, uint32_t *data)
+int fileio_read_u32(struct fileio *fileio_p, uint32_t *data)
{
uint8_t buf[4];
size_t size_read;
+ struct fileio_internal *fileio = fileio_p->fp;
int retval = fileio_local_read(fileio, sizeof(uint32_t), buf, &size_read);
if (ERROR_OK == retval && sizeof(uint32_t) != size_read)
retval = -EIO;
@@ -181,7 +200,7 @@ int fileio_read_u32(struct fileio *fileio, uint32_t *data)
return retval;
}
-static int fileio_local_fgets(struct fileio *fileio,
+static int fileio_local_fgets(struct fileio_internal *fileio,
size_t size, void *buffer)
{
if (fgets(buffer, size, fileio->file) == NULL)
@@ -190,12 +209,13 @@ static int fileio_local_fgets(struct fileio *fileio,
return ERROR_OK;
}
-int fileio_fgets(struct fileio *fileio, size_t size, void *buffer)
+int fileio_fgets(struct fileio *fileio_p, size_t size, void *buffer)
{
+ struct fileio_internal *fileio = fileio_p->fp;
return fileio_local_fgets(fileio, size, buffer);
}
-static int fileio_local_write(struct fileio *fileio,
+static int fileio_local_write(struct fileio_internal *fileio,
size_t size, const void *buffer, size_t *size_written)
{
ssize_t retval = fwrite(buffer, 1, size, fileio->file);
@@ -203,24 +223,30 @@ static int fileio_local_write(struct fileio *fileio,
return (retval < 0) ? retval : ERROR_OK;
}
-int fileio_write(struct fileio *fileio,
+int fileio_write(struct fileio *fileio_p,
size_t size, const void *buffer, size_t *size_written)
{
+ struct fileio_internal *fileio = fileio_p->fp;
int retval = fileio_local_write(fileio, size, buffer, size_written);
if (retval == ERROR_OK)
fileio->size += *size_written;
return retval;
}
-int fileio_write_u32(struct fileio *fileio, uint32_t data)
+int fileio_write_u32(struct fileio *fileio_p, uint32_t data)
{
uint8_t buf[4];
h_u32_to_be(buf, data);
-
size_t size_written;
- int retval = fileio_write(fileio, 4, buf, &size_written);
+ int retval = fileio_write(fileio_p, 4, buf, &size_written);
if (ERROR_OK == retval && size_written != sizeof(uint32_t))
retval = -EIO;
return retval;
}
+
+int fileio_size(struct fileio *fileio_p)
+{
+ struct fileio_internal *fileio = fileio_p->fp;
+ return fileio->size;
+}
diff --git a/src/helper/fileio.h b/src/helper/fileio.h
index 597bafc0..40c4ef0e 100644
--- a/src/helper/fileio.h
+++ b/src/helper/fileio.h
@@ -46,12 +46,10 @@ enum fileio_access
FILEIO_APPENDREAD, /* open for writing, position at end, allow reading */
};
-struct fileio {
- const char *url;
- ssize_t size;
- enum fileio_type type;
- enum fileio_access access;
- FILE *file;
+struct fileio
+{
+ /* The structure is opaque */
+ struct fileio_internal *fp;
};
int fileio_open(struct fileio *fileio,
@@ -68,6 +66,7 @@ int fileio_write(struct fileio *fileio,
int fileio_read_u32(struct fileio *fileio, uint32_t *data);
int fileio_write_u32(struct fileio *fileio, uint32_t data);
+int fileio_size(struct fileio *fileio);
#define ERROR_FILEIO_LOCATION_UNKNOWN (-1200)
#define ERROR_FILEIO_NOT_FOUND (-1201)