Import sources from 2011-03-30 iso image

1 files changed, 109 insertions, 0 deletions

diff --git a/sys/src/libstdio/Stdio.h b/sys/src/libstdio/Stdio.h
new file mode 100755
index 000000000..909c90705
--- /dev/null
+++ b/sys/src/libstdio/Stdio.h
@@ -0,0 +1,109 @@
+/*
+ * pANS stdio.h
+ */
+/*
+ * According to X3J11, there is only one i/o buffer
+ * and it must not be occupied by both input and output data.
+ *	If rp<wp, we must have state==RD and
+ *	if wp<rp, we must have state==WR, so that getc and putc work correctly.
+ *	On open, rp, wp and buf are set to 0, so first getc or putc will call _IO_getc
+ *	or _IO_putc, which will allocate the buffer.
+ *	If setvbuf(., ., _IONBF, .) is called, bufl is set to 0 and
+ *	buf, rp and wp are pointed at unbuf.
+ *	If setvbuf(., ., _IOLBF, .) is called, _IO_putc leaves wp and rp pointed at the
+ *	end of the buffer so that it can be called on each putc to check whether it's got
+ *	a newline.  This nonsense is in order to avoid impacting performance of the other
+ *	buffering modes more than necessary -- putting the test in putc adds many
+ *	instructions that are wasted in non-_IOLBF mode:
+ *	#define putc(c, f)	(_IO_ctmp=(c),\
+ *				(f)->wp>=(f)->rp || (f)->flags&LINEBUF && _IO_ctmp=='\n'\
+ *					?_IO_putc(_IO_ctmp, f)\
+ *					:*(f)->wp++=_IO_ctmp)
+ *				
+ */
+typedef struct{
+	int fd;		/* UNIX file pointer */
+	char flags;	/* bits for must free buffer on close, line-buffered */
+	char state;	/* last operation was read, write, position, error, eof */
+	char *buf;	/* pointer to i/o buffer */
+	char *rp;	/* read pointer (or write end-of-buffer) */
+	char *wp;	/* write pointer (or read end-of-buffer) */
+	char *lp;	/* actual write pointer used when line-buffering */
+	long bufl;	/* actual length of buffer */
+	char unbuf[1];	/* tiny buffer for unbuffered io (used for ungetc?) */
+}FILE;
+typedef long fpos_t;
+#ifndef NULL
+#define	NULL	0
+#endif
+/*
+ * Third arg of setvbuf
+ */
+#define	_IOFBF	1			/* block-buffered */
+#define	_IOLBF	2			/* line-buffered */
+#define	_IONBF	3			/* unbuffered */
+#define	BUFSIZ	4096			/* size of setbuf buffer */
+#define	EOF	(-1)			/* returned on end of file */
+#define	FOPEN_MAX	128		/* max files open */
+#define	FILENAME_MAX	BUFSIZ		/* silly filename length */
+#define	L_tmpnam	20		/* sizeof "/tmp/abcdefghij9999 */
+#define	SEEK_CUR	1
+#define	SEEK_END	2
+#define	SEEK_SET	0
+#define	TMP_MAX		64		/* very hard to set correctly */
+#define	stderr	(&_IO_stream[2])
+#define	stdin	(&_IO_stream[0])
+#define	stdout	(&_IO_stream[1])
+#define	_IO_CHMASK	0377		/* mask for 8 bit characters */
+FILE *tmpfile(void);
+char *tmpnam(char *);
+int fclose(FILE *);
+int fflush(FILE *);
+FILE *fopen(const char *, const char *);
+FILE *freopen(const char *, const char *, FILE *);
+void setbuf(FILE *, char *);
+int setvbuf(FILE *, char *, int, long);
+int fprintf(FILE *, const char *, ...);
+int fscanf(FILE *, const char *, ...);
+int printf(const char *, ...);
+int scanf(const char *, ...);
+int sprintf(char *, const char *, ...);
+int sscanf(const char *, const char *, ...);
+int vfprintf(FILE *, const char *, va_list);
+int vprintf(const char *, va_list);
+int vsprintf(char *, const char *, va_list);
+int vfscanf(FILE *, const char *, va_list);
+int fgetc(FILE *);
+char *fgets(char *, int, FILE *);
+int fputc(int, FILE *);
+int fputs(const char *, FILE *);
+int getc(FILE *);
+#define	getc(f)	((f)->rp>=(f)->wp?_IO_getc(f):*(f)->rp++&_IO_CHMASK)
+int _IO_getc(FILE *f);
+int getchar(void);
+#define	getchar()	getc(stdin)
+char *gets(char *);
+int putc(int, FILE *);
+#define	putc(c, f) ((f)->wp>=(f)->rp?_IO_putc(c, f):(*(f)->wp++=c)&_IO_CHMASK)
+int _IO_putc(int, FILE *);
+int putchar(int);
+#define	putchar(c)	putc(c, stdout)
+int puts(const char *);
+int ungetc(int, FILE *);
+long fread(void *, long, long, FILE *);
+long fwrite(const void *, long, long, FILE *);
+int fgetpos(FILE *, fpos_t *);
+int fseek(FILE *, long int, int);
+int fsetpos(FILE *, const fpos_t *);
+long int ftell(FILE *);
+void rewind(FILE *);
+void clearerr(FILE *);
+int feof(FILE *);
+int ferror(FILE *);
+void perror(const char *);
+extern FILE _IO_stream[FOPEN_MAX];
+FILE *sopenr(const char *);
+FILE *sopenw(void);
+char *sclose(FILE *);
+char	*dtoa(double, int, int, int*, int*, char**);
+void	freedtoa(char*);