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/*
* echo args, globbing is necessary.
* usage:
* echo [-n] [args ...]
* \n \r \b \c \v \\ \f \t \NNN escapes supported
* -n and \c mean dont echo the final newline.
*
* ++jrb bammi@cadence.com
*/
#include <stdio.h>
#if __STDC__
# include <compiler.h>
#else
# define __PROTO(X) ()
#endif
char **glob __PROTO((char *patt, int decend_dir));
int contains_wild __PROTO((char *patt));
void free_all __PROTO((void));
int final_newline = 1; /* turned off by -n or \c */
int main(argc, argv)
int argc;
char **argv;
{
--argc; ++argv;
if((*argv)[0] == '-')
{
if ((*argv)[1] == 'n')
final_newline = 0;
else
{
fputs("usage: echo [-n] [arguement ... ]\n", stderr);
return 1;
}
--argc; ++argv;
}
while(argc--)
{
char *word = *argv;
char **list;
if(contains_wild(word) && (list = glob(word, 0)))
{
while(*list)
{
fputs(*list, stdout);
if(*++list) putchar(' ');
}
free_all();
}
else
{
char c;
for(c = *word; c; c = (*word)? *++word : 0)
{
if(c != '\\')
putchar(c);
else
{
switch(*++word)
{
case 'b': putchar('\b'); break;
case 'f': putchar('\f'); break;
case 'n': putchar('\n'); break;
case 'r': putchar('\r'); break;
case 't': putchar('\t'); break;
case 'v': putchar('\v'); break;
case '\\': putchar('\\'); break;
case 'c': final_newline = 0; break;
default: putchar(*word); /* ?? */
case '0':
{
int n = 0;
for(c = *++word; (c >= '0') && (c <= '7'); c = *++word)
n = (n << 3) + (c - '0');
putchar(n);
}
}
}
}
}
if(*++argv) putchar(' ');
}
if(final_newline) putchar('\n');
return 0;
}
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