bin/sh/output.c

1 /*	$NetBSD: output.c,v 1.41 2023/04/07 10:34:13 kre Exp $	*/
38 static char sccsid[] = "@(#)output.c	8.2 (Berkeley) 5/4/95";
40 __RCSID("$NetBSD: output.c,v 1.41 2023/04/07 10:34:13 kre Exp $");
45  * Shell output routines.  We use our own output routines because:
47  *		any pending output.
49  *		save the output of the command in a region obtained
51  *		output of the command via a pipe.
52  *	Our output routines may be smaller than the stdio routines.
67 #include "output.h"
76 #define BLOCK_OUT -2		/* output to a fixed block of memory */
77 #define MEM_OUT -3		/* output to dynamically allocated memory */
87 struct output output = {NULL,    0, OUTBUFSIZ, NULL,    1,    0   CHAIN };
88 struct output errout = {NULL,    0,       100, NULL,    2,    0   CHAIN };
89 struct output memout = {NULL,    0,         0, NULL, MEM_OUT, 0   CHAIN };
90 struct output *out1 = &output;
91 struct output *out2 = &errout;
93 struct output *outx = &errout;
94 struct output *outxtop = NULL;
100 INCLUDE "output.h"
104 	out1 = &output;
117  * Set up an output file to write to memory rather than a file.
121 open_mem(char *block, int length, struct output *file)
154 outstr(const char *p, struct output *file)
197 outshstr(const char *p, struct output *file)
264 emptyoutbuf(struct output *dest)
298 	flushout(&output);
304 flushout(struct output *dest)
322 	if (output.buf) {
323 		ckfree(output.buf);
324 		output.buf = NULL;
325 		output.nleft = 0;
332 outfmt(struct output *file, const char *fmt, ...)
369 	struct output strout;
384  * Formatted output.  This routine handles a subset of the printf formats:
403 doformat(struct output *dest, const char *f, va_list ap)
410 		error("Could not allocate formatted output buffer");
633 	struct output *o = outxtop;
665 		 * This is a change of output file only
666 		 * Just close the current one, and reuse the struct output
673 		 * need a new output struct to become outx
692 	struct output *o;
724 	struct output *o;