1 |
#ifndef lint |
2 |
static const char RCSid[] = "$Id: lam.c,v 1.21 2019/07/05 00:46:23 greg Exp $"; |
3 |
#endif |
4 |
/* |
5 |
* lam.c - simple program to laminate files. |
6 |
* |
7 |
* 7/14/88 Greg Ward |
8 |
*/ |
9 |
|
10 |
#include <stdlib.h> |
11 |
#include <string.h> |
12 |
#include <stdio.h> |
13 |
#include <ctype.h> |
14 |
|
15 |
#include "platform.h" |
16 |
#include "rtio.h" |
17 |
|
18 |
#define MAXFILE 512 /* maximum number of files */ |
19 |
|
20 |
#define MAXLINE 65536 /* maximum input line */ |
21 |
|
22 |
FILE *input[MAXFILE]; |
23 |
int bytsiz[MAXFILE]; |
24 |
char *tabc[MAXFILE]; |
25 |
int nfiles = 0; |
26 |
|
27 |
char buf[MAXLINE]; |
28 |
|
29 |
int |
30 |
main(int argc, char *argv[]) |
31 |
{ |
32 |
long incnt = 0; |
33 |
int unbuff = 0; |
34 |
int binout = 0; |
35 |
char *curtab = "\t"; |
36 |
int curbytes = 0; |
37 |
int puteol; |
38 |
int i; |
39 |
|
40 |
for (i = 1; i < argc; i++) { |
41 |
if (argv[i][0] == '-') { |
42 |
switch (argv[i][1]) { |
43 |
case 't': |
44 |
curtab = argv[i]+2; |
45 |
break; |
46 |
case 'u': |
47 |
unbuff = !unbuff; |
48 |
break; |
49 |
case 'i': |
50 |
switch (argv[i][2]) { |
51 |
case 'n': |
52 |
incnt = atol(argv[++i]); |
53 |
break; |
54 |
case 'f': |
55 |
curbytes = sizeof(float); |
56 |
break; |
57 |
case 'd': |
58 |
curbytes = sizeof(double); |
59 |
break; |
60 |
case 'i': |
61 |
curbytes = sizeof(int); |
62 |
break; |
63 |
case 'w': |
64 |
curbytes = 2; |
65 |
break; |
66 |
case 'b': |
67 |
curbytes = 1; |
68 |
break; |
69 |
case 'a': |
70 |
curbytes = argv[i][3] ? -1 : 0; |
71 |
break; |
72 |
default: |
73 |
goto badopt; |
74 |
} |
75 |
if (isdigit(argv[i][3])) |
76 |
curbytes *= atoi(argv[i]+3); |
77 |
curbytes += (curbytes == -1); |
78 |
if (curbytes > MAXLINE) { |
79 |
fputs(argv[0], stderr); |
80 |
fputs(": input size too big\n", stderr); |
81 |
return(1); |
82 |
} |
83 |
if (curbytes > 0) { |
84 |
curtab = ""; |
85 |
++binout; |
86 |
} |
87 |
break; |
88 |
case '\0': |
89 |
tabc[nfiles] = curtab; |
90 |
input[nfiles] = stdin; |
91 |
if (curbytes > 0) |
92 |
SET_FILE_BINARY(input[nfiles]); |
93 |
bytsiz[nfiles++] = curbytes; |
94 |
break; |
95 |
badopt:; |
96 |
default: |
97 |
fputs(argv[0], stderr); |
98 |
fputs(": bad option\n", stderr); |
99 |
return(1); |
100 |
} |
101 |
} else if (argv[i][0] == '!') { |
102 |
tabc[nfiles] = curtab; |
103 |
if ((input[nfiles] = popen(argv[i]+1, "r")) == NULL) { |
104 |
fputs(argv[i], stderr); |
105 |
fputs(": cannot start command\n", stderr); |
106 |
return(1); |
107 |
} |
108 |
if (curbytes > 0) |
109 |
SET_FILE_BINARY(input[nfiles]); |
110 |
bytsiz[nfiles++] = curbytes; |
111 |
} else { |
112 |
tabc[nfiles] = curtab; |
113 |
if ((input[nfiles] = fopen(argv[i], "r")) == NULL) { |
114 |
fputs(argv[i], stderr); |
115 |
fputs(": cannot open file\n", stderr); |
116 |
return(1); |
117 |
} |
118 |
if (curbytes > 0) |
119 |
SET_FILE_BINARY(input[nfiles]); |
120 |
bytsiz[nfiles++] = curbytes; |
121 |
} |
122 |
if (nfiles >= MAXFILE) { |
123 |
fputs(argv[0], stderr); |
124 |
fputs(": too many input streams\n", stderr); |
125 |
return(1); |
126 |
} |
127 |
} |
128 |
if (!nfiles) { |
129 |
fputs(argv[0], stderr); |
130 |
fputs(": no input streams\n", stderr); |
131 |
return(1); |
132 |
} |
133 |
if (binout) /* binary output? */ |
134 |
SET_FILE_BINARY(stdout); |
135 |
#ifdef getc_unlocked /* avoid lock/unlock overhead */ |
136 |
for (i = nfiles; i--; ) |
137 |
flockfile(input[i]); |
138 |
flockfile(stdout); |
139 |
#endif |
140 |
puteol = 0; /* any ASCII output at all? */ |
141 |
for (i = nfiles; i--; ) |
142 |
puteol += (bytsiz[i] <= 0); |
143 |
do { /* main loop */ |
144 |
for (i = 0; i < nfiles; i++) { |
145 |
if (bytsiz[i] > 0) { /* binary input */ |
146 |
if (getbinary(buf, bytsiz[i], 1, input[i]) < 1) |
147 |
break; |
148 |
if (putbinary(buf, bytsiz[i], 1, stdout) != 1) |
149 |
break; |
150 |
} else if (bytsiz[i] < 0) { /* multi-line input */ |
151 |
int n = -bytsiz[i]; |
152 |
while (n--) { |
153 |
if (fgets(buf, MAXLINE, input[i]) == NULL) |
154 |
break; |
155 |
if ((i > 0) | (n < -bytsiz[i]-1)) |
156 |
fputs(tabc[i], stdout); |
157 |
buf[strlen(buf)-1] = '\0'; |
158 |
if (fputs(buf, stdout) == EOF) |
159 |
break; |
160 |
} |
161 |
if (n >= 0) /* fell short? */ |
162 |
break; |
163 |
} else { /* single-line input */ |
164 |
if (fgets(buf, MAXLINE, input[i]) == NULL) |
165 |
break; |
166 |
if (i) |
167 |
fputs(tabc[i], stdout); |
168 |
buf[strlen(buf)-1] = '\0'; |
169 |
if (fputs(buf, stdout) == EOF) |
170 |
break; |
171 |
} |
172 |
} |
173 |
if (i < nfiles) |
174 |
break; |
175 |
if (puteol) |
176 |
putchar('\n'); |
177 |
if (unbuff) |
178 |
fflush(stdout); |
179 |
} while (--incnt); |
180 |
/* check ending */ |
181 |
if (fflush(stdout) == EOF) { |
182 |
fputs(argv[0], stderr); |
183 |
fputs(": write error on standard output\n", stderr); |
184 |
return(1); |
185 |
} |
186 |
if (incnt > 0) { |
187 |
fputs(argv[0], stderr); |
188 |
fputs(": warning: premature EOD\n", stderr); |
189 |
} |
190 |
return(0); |
191 |
} |