Commit | Line | Data |
---|---|---|
dbad0651 BJ |
1 | static char *sccsid = "@(#)test.c 4.1 (Berkeley) %G%"; |
2 | /* | |
3 | * test expression | |
4 | * [ expression ] | |
5 | */ | |
6 | ||
7 | #include <stdio.h> | |
8 | #include <sys/types.h> | |
9 | #include <sys/stat.h> | |
10 | #define EQ(a,b) ((tmp=a)==0?0:(strcmp(tmp,b)==0)) | |
11 | ||
12 | #define DIR 1 | |
13 | #define FIL 2 | |
14 | int ap; | |
15 | int ac; | |
16 | char **av; | |
17 | char *tmp; | |
18 | ||
19 | main(argc, argv) | |
20 | char *argv[]; | |
21 | { | |
22 | ||
23 | ac = argc; av = argv; ap = 1; | |
24 | if(EQ(argv[0],"[")) { | |
25 | if(!EQ(argv[--ac],"]")) | |
26 | synbad("] missing",""); | |
27 | } | |
28 | argv[ac] = 0; | |
29 | if (ac<=1) exit(1); | |
30 | exit(exp()?0:1); | |
31 | } | |
32 | ||
33 | char *nxtarg(mt) { | |
34 | ||
35 | if (ap>=ac) { | |
36 | if(mt) { | |
37 | ap++; | |
38 | return(0); | |
39 | } | |
40 | synbad("argument expected",""); | |
41 | } | |
42 | return(av[ap++]); | |
43 | } | |
44 | ||
45 | exp() { | |
46 | int p1; | |
47 | ||
48 | p1 = e1(); | |
49 | if (EQ(nxtarg(1), "-o")) return(p1 | exp()); | |
50 | ap--; | |
51 | return(p1); | |
52 | } | |
53 | ||
54 | e1() { | |
55 | int p1; | |
56 | ||
57 | p1 = e2(); | |
58 | if (EQ(nxtarg(1), "-a")) return (p1 & e1()); | |
59 | ap--; | |
60 | return(p1); | |
61 | } | |
62 | ||
63 | e2() { | |
64 | if (EQ(nxtarg(0), "!")) | |
65 | return(!e3()); | |
66 | ap--; | |
67 | return(e3()); | |
68 | } | |
69 | ||
70 | e3() { | |
71 | int p1; | |
72 | register char *a; | |
73 | char *p2; | |
74 | int int1, int2; | |
75 | ||
76 | a=nxtarg(0); | |
77 | if(EQ(a, "(")) { | |
78 | p1 = exp(); | |
79 | if(!EQ(nxtarg(0), ")")) synbad(") expected",""); | |
80 | return(p1); | |
81 | } | |
82 | ||
83 | if(EQ(a, "-r")) | |
84 | return(tio(nxtarg(0), 0)); | |
85 | ||
86 | if(EQ(a, "-w")) | |
87 | return(tio(nxtarg(0), 1)); | |
88 | ||
89 | if(EQ(a, "-d")) | |
90 | return(ftype(nxtarg(0))==DIR); | |
91 | ||
92 | if(EQ(a, "-f")) | |
93 | return(ftype(nxtarg(0))==FIL); | |
94 | ||
95 | if(EQ(a, "-s")) | |
96 | return(fsizep(nxtarg(0))); | |
97 | ||
98 | if(EQ(a, "-t")) | |
99 | if(ap>=ac) | |
100 | return(isatty(1)); | |
101 | else | |
102 | return(isatty(atoi(nxtarg(0)))); | |
103 | ||
104 | if(EQ(a, "-n")) | |
105 | return(!EQ(nxtarg(0), "")); | |
106 | if(EQ(a, "-z")) | |
107 | return(EQ(nxtarg(0), "")); | |
108 | ||
109 | p2 = nxtarg(1); | |
110 | if (p2==0) | |
111 | return(!EQ(a,"")); | |
112 | if(EQ(p2, "=")) | |
113 | return(EQ(nxtarg(0), a)); | |
114 | ||
115 | if(EQ(p2, "!=")) | |
116 | return(!EQ(nxtarg(0), a)); | |
117 | ||
118 | if(EQ(a, "-l")) { | |
119 | int1=length(p2); | |
120 | p2=nxtarg(0); | |
121 | } else{ int1=atoi(a); | |
122 | } | |
123 | int2 = atoi(nxtarg(0)); | |
124 | if(EQ(p2, "-eq")) | |
125 | return(int1==int2); | |
126 | if(EQ(p2, "-ne")) | |
127 | return(int1!=int2); | |
128 | if(EQ(p2, "-gt")) | |
129 | return(int1>int2); | |
130 | if(EQ(p2, "-lt")) | |
131 | return(int1<int2); | |
132 | if(EQ(p2, "-ge")) | |
133 | return(int1>=int2); | |
134 | if(EQ(p2, "-le")) | |
135 | return(int1<=int2); | |
136 | ||
137 | synbad("unknown operator ",p2); | |
138 | } | |
139 | ||
140 | tio(a, f) | |
141 | char *a; | |
142 | int f; | |
143 | { | |
144 | ||
145 | f = open(a, f); | |
146 | if (f>=0) { | |
147 | close(f); | |
148 | return(1); | |
149 | } | |
150 | return(0); | |
151 | } | |
152 | ||
153 | ftype(f) | |
154 | char *f; | |
155 | { | |
156 | struct stat statb; | |
157 | ||
158 | if(stat(f,&statb)<0) | |
159 | return(0); | |
160 | if((statb.st_mode&S_IFMT)==S_IFDIR) | |
161 | return(DIR); | |
162 | return(FIL); | |
163 | } | |
164 | ||
165 | fsizep(f) | |
166 | char *f; | |
167 | { | |
168 | struct stat statb; | |
169 | if(stat(f,&statb)<0) | |
170 | return(0); | |
171 | return(statb.st_size>0); | |
172 | } | |
173 | ||
174 | synbad(s1,s2) | |
175 | char *s1, *s2; | |
176 | { | |
177 | write(2, "test: ", 6); | |
178 | write(2, s1, strlen(s1)); | |
179 | write(2, s2, strlen(s2)); | |
180 | write(2, "\n", 1); | |
181 | exit(255); | |
182 | } | |
183 | ||
184 | length(s) | |
185 | char *s; | |
186 | { | |
187 | char *es=s; | |
188 | while(*es++); | |
189 | return(es-s-1); | |
190 | } |