minix/commands/cawf/output.c

   1 /*
   2  *      output-c - output support functions for cawf(1)
   3  */
   4
   5 /*
   6  *      Copyright (c) 1991 Purdue University Research Foundation,
   7  *      West Lafayette, Indiana 47907.  All rights reserved.
   8  *
   9  *      Written by Victor A. Abell <abe@mace.cc.purdue.edu>,  Purdue
  10  *      University Computing Center.  Not derived from licensed software;
  11  *      derived from awf(1) by Henry Spencer of the University of Toronto.
  12  *
  13  *      Permission is granted to anyone to use this software for any
  14  *      purpose on any computer system, and to alter it and redistribute
  15  *      it freely, subject to the following restrictions:
  16  *
  17  *      1. The author is not responsible for any consequences of use of
  18  *         this software, even if they arise from flaws in it.
  19  *
  20  *      2. The origin of this software must not be misrepresented, either
  21  *         by explicit claim or by omission.  Credits must appear in the
  22  *         documentation.
  23  *
  24  *      3. Altered versions must be plainly marked as such, and must not
  25  *         be misrepresented as being the original software.  Credits must
  26  *         appear in the documentation.
  27  *
  28  *      4. This notice may not be removed or altered.
  29  */
  30
  31 #include "cawf.h"
  32
  33
  34 /*
  35  * LenprtHF(s, p, t) - get length of print header or footer with page number
  36  *                     interpolation
  37  */
  38
  39 int LenprtHF(unsigned char *s, int p, int t) {
  40 /* header/footer string s
  41  * page number p
  42  * type t: 0 = get interpolated length
  43  *       1 = print
  44  */
  45         unsigned char buf[10];          /* buffer for page number */
  46         int len;                        /* line length */
  47         unsigned char *s1;              /* temporary string pointer */
  48
  49         if (s == NULL)
  50                 return(0);
  51         for (len = 0; *s && *s != '%'; s++) {
  52                 len++;
  53                 if (t)
  54                         Charput((int)*s);
  55         }
  56         if (*s) {
  57                 (void) sprintf((char *)buf, "%d", p);
  58                 for (s1 = buf; *s1; s1++) {
  59                         len++;
  60                         if (t)
  61                                 Charput((int)*s1);
  62                 }
  63                 for (s++; *s; s++) {
  64                         len++;
  65                         if (t)
  66                                 Charput((int)*s);
  67                 }
  68         }
  69         return(len);
  70 }
  71
  72
  73 /*
  74  * Charput(s) - put a character to output, subject to diversion
  75  */
  76
  77 void Charput(int c) {
  78 /* character to put c */
  79         if (Divert == 0)
  80                 putchar((unsigned char)c);
  81 }
  82
  83
  84 /*
  85  * Stringput(s) - put a string to output, subject to diversion
  86  */
  87
  88 void Stringput(unsigned char *s) {
  89 /* string to put s */
  90         if (Divert == 0)
  91                 fputs((char *)s, stdout);
  92 }