Commit | Line | Data |
1d4d38c3 |
1 | /* |
2 | * echo args, globbing is necessary. |
3 | * usage: |
4 | * echo [-n] [args ...] |
5 | * \n \r \b \c \v \\ \f \t \NNN escapes supported |
6 | * -n and \c mean dont echo the final newline. |
7 | * |
8 | * ++jrb bammi@cadence.com |
9 | */ |
10 | |
11 | #include <stdio.h> |
12 | |
13 | #if __STDC__ |
14 | # include <compiler.h> |
15 | #else |
16 | # define __PROTO(X) () |
17 | #endif |
18 | |
19 | char **glob __PROTO((char *patt, int decend_dir)); |
20 | int contains_wild __PROTO((char *patt)); |
21 | void free_all __PROTO((void)); |
22 | |
23 | |
24 | int final_newline = 1; /* turned off by -n or \c */ |
25 | |
26 | int main(argc, argv) |
27 | int argc; |
28 | char **argv; |
29 | { |
30 | --argc; ++argv; |
31 | if((*argv)[0] == '-') |
32 | { |
33 | if ((*argv)[1] == 'n') |
34 | final_newline = 0; |
35 | else |
36 | { |
37 | fputs("usage: echo [-n] [arguement ... ]\n", stderr); |
38 | return 1; |
39 | } |
40 | --argc; ++argv; |
41 | } |
42 | |
43 | while(argc--) |
44 | { |
45 | char *word = *argv; |
46 | char **list; |
47 | |
48 | if(contains_wild(word) && (list = glob(word, 0))) |
49 | { |
50 | while(*list) |
51 | { |
52 | fputs(*list, stdout); |
53 | if(*++list) putchar(' '); |
54 | } |
55 | free_all(); |
56 | } |
57 | else |
58 | { |
59 | char c; |
60 | for(c = *word; c; c = (*word)? *++word : 0) |
61 | { |
62 | if(c != '\\') |
63 | putchar(c); |
64 | else |
65 | { |
66 | switch(*++word) |
67 | { |
68 | case 'b': putchar('\b'); break; |
69 | case 'f': putchar('\f'); break; |
70 | case 'n': putchar('\n'); break; |
71 | case 'r': putchar('\r'); break; |
72 | case 't': putchar('\t'); break; |
73 | case 'v': putchar('\v'); break; |
74 | case '\\': putchar('\\'); break; |
75 | case 'c': final_newline = 0; break; |
76 | default: putchar(*word); /* ?? */ |
77 | case '0': |
78 | { |
79 | int n = 0; |
80 | for(c = *++word; (c >= '0') && (c <= '7'); c = *++word) |
81 | n = (n << 3) + (c - '0'); |
82 | putchar(n); |
83 | } |
84 | } |
85 | } |
86 | } |
87 | } |
88 | if(*++argv) putchar(' '); |
89 | } |
90 | if(final_newline) putchar('\n'); |
91 | return 0; |
92 | } |
93 | |
94 | |
95 | |
96 | |
97 | |
98 | |