* (c) 1997--2000 Martin Mares <mj@ucw.cz>
*/
+#ifndef _SHERLOCK_FASTBUF_H
+#define _SHERLOCK_FASTBUF_H
+
#ifndef EOF
#include <stdio.h>
#endif
sh_off_t pos; /* Position of buffer start in the file */
sh_off_t fdpos; /* Current position in the non-buffered file */
int fd; /* File descriptor, -1 if not a real file */
+ int is_temp_file; /* Is a temporary file, delete on close */
void *lldata; /* Data private to access functions below */
void *llpos; /* ... continued ... */
int (*refill)(struct fastbuf *); /* Get a buffer with new data */
bput5_slow(f, l);
}
-void bread_slow(struct fastbuf *f, void *b, uns l);
-static inline void bread(struct fastbuf *f, void *b, uns l)
+uns bread_slow(struct fastbuf *f, void *b, uns l, uns check);
+static inline uns bread(struct fastbuf *f, void *b, uns l)
+{
+ if (f->bptr + l <= f->bstop)
+ {
+ memcpy(b, f->bptr, l);
+ f->bptr += l;
+ return l;
+ }
+ else
+ return bread_slow(f, b, l, 0);
+}
+
+static inline uns breadb(struct fastbuf *f, void *b, uns l)
{
if (f->bptr + l <= f->bstop)
{
memcpy(b, f->bptr, l);
f->bptr += l;
+ return l;
}
else
- bread_slow(f, b, l);
+ return bread_slow(f, b, l, 1);
}
void bwrite_slow(struct fastbuf *f, void *b, uns l);
}
byte *bgets(struct fastbuf *f, byte *b, uns l); /* Non-std */
+byte *bgets0(struct fastbuf *f, byte *b, uns l);
static inline void
bputs(struct fastbuf *f, byte *b)
bwrite(f, b, strlen(b));
}
+static inline void
+bputs0(struct fastbuf *f, byte *b)
+{
+ bwrite(f, b, strlen(b)+1);
+}
+
static inline void
bputsn(struct fastbuf *f, byte *b)
{
bputc(f, '\n');
}
+/* Direct I/O on buffers */
+
+int bdirect_read(struct fastbuf *f, byte **buf);
+int bdirect_write_prepare(struct fastbuf *f, byte **buf);
+void bdirect_write_commit(struct fastbuf *f, byte *pos);
+
/* Depending on compile-time configuration, we select the right function for reading/writing of file offsets */
#ifdef SHERLOCK_CONFIG_LARGE_DB
#define bputo(f,l) bput5(f,l)
#define bgetp(f) bgetq(f)
#define bputp(f,l) bputq(f,l)
+#define FASTBUF_BYTES_PER_O 5
+#define FASTBUF_BYTES_PER_P 8
#else
#define bgeto(f) bgetl(f)
#define bputo(f,l) bputl(f,l)
#define bgetp(f) bgetl(f)
#define bputp(f,l) bputl(f,l)
+#define FASTBUF_BYTES_PER_O 4
+#define FASTBUF_BYTES_PER_P 4
+#endif
+
#endif