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-rw-r--r--bin/ksh/shf.h79
1 files changed, 79 insertions, 0 deletions
diff --git a/bin/ksh/shf.h b/bin/ksh/shf.h
new file mode 100644
index 0000000..31be7fb
--- /dev/null
+++ b/bin/ksh/shf.h
@@ -0,0 +1,79 @@
+/* $OpenBSD: shf.h,v 1.8 2015/12/14 06:09:43 mmcc Exp $ */
+
+#ifndef SHF_H
+# define SHF_H
+
+/*
+ * Shell file I/O routines
+ */
+
+#define SHF_BSIZE 512
+
+#define shf_getc(shf) ((shf)->rnleft > 0 ? (shf)->rnleft--, *(shf)->rp++ : \
+ shf_getchar(shf))
+#define shf_putc(c, shf) ((shf)->wnleft == 0 ? shf_putchar((c), (shf)) : \
+ ((shf)->wnleft--, *(shf)->wp++ = (c)))
+#define shf_eof(shf) ((shf)->flags & SHF_EOF)
+#define shf_error(shf) ((shf)->flags & SHF_ERROR)
+#define shf_clearerr(shf) ((shf)->flags &= ~(SHF_EOF | SHF_ERROR))
+
+/* Flags passed to shf_*open() */
+#define SHF_RD 0x0001
+#define SHF_WR 0x0002
+#define SHF_RDWR (SHF_RD|SHF_WR)
+#define SHF_ACCMODE 0x0003 /* mask */
+#define SHF_GETFL 0x0004 /* use fcntl() to figure RD/WR flags */
+#define SHF_UNBUF 0x0008 /* unbuffered I/O */
+#define SHF_CLEXEC 0x0010 /* set close on exec flag */
+#define SHF_MAPHI 0x0020 /* make fd > FDBASE (and close orig)
+ * (shf_open() only) */
+#define SHF_DYNAMIC 0x0040 /* string: increase buffer as needed */
+#define SHF_INTERRUPT 0x0080 /* EINTR in read/write causes error */
+/* Flags used internally */
+#define SHF_STRING 0x0100 /* a string, not a file */
+#define SHF_ALLOCS 0x0200 /* shf and shf->buf were alloc()ed */
+#define SHF_ALLOCB 0x0400 /* shf->buf was alloc()ed */
+#define SHF_ERROR 0x0800 /* read()/write() error */
+#define SHF_EOF 0x1000 /* read eof (sticky) */
+#define SHF_READING 0x2000 /* currently reading: rnleft,rp valid */
+#define SHF_WRITING 0x4000 /* currently writing: wnleft,wp valid */
+
+
+struct shf {
+ int flags; /* see SHF_* */
+ unsigned char *rp; /* read: current position in buffer */
+ int rbsize; /* size of buffer (1 if SHF_UNBUF) */
+ int rnleft; /* read: how much data left in buffer */
+ unsigned char *wp; /* write: current position in buffer */
+ int wbsize; /* size of buffer (0 if SHF_UNBUF) */
+ int wnleft; /* write: how much space left in buffer */
+ unsigned char *buf; /* buffer */
+ int fd; /* file descriptor */
+ int errno_; /* saved value of errno after error */
+ int bsize; /* actual size of buf */
+ Area *areap; /* area shf/buf were allocated in */
+};
+
+extern struct shf shf_iob[];
+
+struct shf *shf_open(const char *, int, int, int);
+struct shf *shf_fdopen(int, int, struct shf *);
+struct shf *shf_reopen(int, int, struct shf *);
+struct shf *shf_sopen(char *, int, int, struct shf *);
+int shf_close(struct shf *);
+int shf_fdclose(struct shf *);
+char *shf_sclose(struct shf *);
+int shf_flush(struct shf *);
+int shf_read(char *, int, struct shf *);
+char *shf_getse(char *, int, struct shf *);
+int shf_getchar(struct shf *s);
+int shf_ungetc(int, struct shf *);
+int shf_putchar(int, struct shf *);
+int shf_puts(const char *, struct shf *);
+int shf_write(const char *, int, struct shf *);
+int shf_fprintf(struct shf *, const char *, ...);
+int shf_snprintf(char *, int, const char *, ...);
+char *shf_smprintf(const char *, ...);
+int shf_vfprintf(struct shf *, const char *, va_list);
+
+#endif /* SHF_H */