/**********************************************************************//*                                                                    *//*             FILENAME:  pad.c                                       *//*             BY:  Jonathan G. Fiscus                                *//*                  NATIONAL INSTITUTE OF STANDARDS AND TECHNOLOGY    *//*                  SPEECH RECOGNITION GROUP                          *//*                                                                    *//*           DESC:  This is file contains routines to set 'pad' to    *//*                  a certain length.  `pad` is a character array used*//*                  for centering output,  when it's set to a length, *//*                  n spaces are written into the array and terminated*//*                  with a NULL_CHAR so when written to output, there *//*                  will be n spaces before the next formatted item   *//*                                                                    *//*              **  These functions make use of a static variable to  *//*                  tell the routines how long a single output line   *//*                  can be.                                           *//*                                                                    *//**********************************************************************/#include <util/chars.h>#include <stdio.h>static int pad_print_out_width=SCREEN_WIDTH;/*************************************************************//*    init the utilities to the proper printout dimensions   *//*************************************************************/init_pad_util(pr_width)int pr_width;{   pad_print_out_width = pr_width;}/*************************************************************//*    return the value of the print_out_width                *//*************************************************************/pad_pr_width(){    return(pad_print_out_width);}/*************************************************************//*     pad manipulating routines                             *//*************************************************************//*  set the pad to center the passed in string               */set_pad(pad,str)char *pad, *str;{    int i, len;        len = (pad_print_out_width - strlen(str) )/2;    for (i=0; i<len;i++)        pad[i] = SPACE;    if (i>0)       pad[i-1] = NULL_CHAR;    else       pad[0] = NULL_CHAR;}/*************************************************************//*  set the pad to n spaces                                  */set_pad_n(pad,n)char *pad;int n;{    int i;    for (i=0;i<n;i++)        pad[i]=SPACE;    pad[i] = NULL_CHAR;}/*************************************************************//*  set the pad to center a string of length `len`           */set_pad_cent_n(pad,len)char *pad;int len;{    int i;    for (i=0;i<((pad_print_out_width - len) / 2);i++)        pad[i]=SPACE;     if (i>0)       pad[i-1] = NULL_CHAR;    else       pad[0] = NULL_CHAR;}/************************************************************//* Return a pointer to a string with a centered version of  *//* str to len characters                                    */	/************************************************************/char *center(str,len)char *str;int len;{    static char desc[200], *ptr;    int il, ft, bk, i;    il = strlen(str);    ft = (len - il) / 2;    bk = len - (il+ft);    ptr=desc;    for (i=0; i<ft; i++)        *ptr++ = ' ';    for (i=0; i<il; i++)        *ptr++ = str[i];    for (i=0; i<bk; i++)        *ptr++ = ' ';    *ptr = '\0';    if (ptr-desc >= 200){        fprintf(stderr,"Error: center utility in gen.c failed, buffer should be %d\n",                       ptr-desc);        exit(-1);    }    return(desc);}