src/output.h

   1 /*-
   2  * Copyright (c) 1991, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  * Copyright (c) 1997-2005
   5  *      Herbert Xu <herbert@gondor.apana.org.au>.  All rights reserved.
   6  *
   7  * This code is derived from software contributed to Berkeley by
   8  * Kenneth Almquist.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  * 3. Neither the name of the University nor the names of its contributors
  19  *    may be used to endorse or promote products derived from this software
  20  *    without specific prior written permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  *
  34  *      @(#)output.h    8.2 (Berkeley) 5/4/95
  35  */
  36
  37 #ifndef OUTPUT_INCL
  38
  39 #include <stdarg.h>
  40 #ifdef USE_GLIBC_STDIO
  41 #include <stdio.h>
  42 #endif
  43 #include <sys/types.h>
  44
  45 struct output {
  46 #ifdef USE_GLIBC_STDIO
  47         FILE *stream;
  48 #endif
  49         char *nextc;
  50         char *end;
  51         char *buf;
  52         size_t bufsize;
  53         int fd;
  54         int flags;
  55 };
  56
  57 extern struct output output;
  58 extern struct output errout;
  59 extern struct output preverrout;
  60 #ifdef notyet
  61 extern struct output memout;
  62 #endif
  63 extern struct output *out1;
  64 extern struct output *out2;
  65
  66 void outmem(const char *, size_t, struct output *);
  67 void outstr(const char *, struct output *);
  68 #ifndef USE_GLIBC_STDIO
  69 void outcslow(int, struct output *);
  70 #endif
  71 void flushall(void);
  72 void flushout(struct output *);
  73 void outfmt(struct output *, const char *, ...)
  74     __attribute__((__format__(__printf__,2,3)));
  75 void out1fmt(const char *, ...)
  76     __attribute__((__format__(__printf__,1,2)));
  77 int fmtstr(char *, size_t, const char *, ...)
  78     __attribute__((__format__(__printf__,3,4)));
  79 int xasprintf(char **, const char *, ...);
  80 #ifndef USE_GLIBC_STDIO
  81 void doformat(struct output *, const char *, va_list);
  82 #endif
  83 int xwrite(int, const void *, size_t);
  84 #ifdef notyet
  85 #ifdef USE_GLIBC_STDIO
  86 void initstreams(void);
  87 void openmemout(void);
  88 int __closememout(void);
  89 #endif
  90 #endif
  91
  92 static inline void
  93 freestdout()
  94 {
  95         output.nextc = output.buf;
  96         output.flags = 0;
  97 }
  98
  99 #define OUTPUT_ERR 01           /* error occurred on output */
 100
 101 #ifdef USE_GLIBC_STDIO
 102 static inline void outc(int ch, struct output *file)
 103 {
 104         putc(ch, file->stream);
 105 }
 106 #define doformat(d, f, a)       vfprintf((d)->stream, (f), (a))
 107 #else
 108 static inline void outc(int ch, struct output *file)
 109 {
 110         if (file->nextc == file->end)
 111                 outcslow(ch, file);
 112         else {
 113                 *file->nextc = ch;
 114                 file->nextc++;
 115         }
 116 }
 117 #endif
 118 #define out1c(c)        outc((c), out1)
 119 #define out2c(c)        outcslow((c), out2)
 120 #define out1mem(s, l)   outmem((s), (l), out1)
 121 #define out1str(s)      outstr((s), out1)
 122 #define out2str(s)      outstr((s), out2)
 123 #define outerr(f)       (f)->flags
 124
 125 #define OUTPUT_INCL
 126 #endif