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15637ed4 RG |
1 | /* |
2 | * Copyright (c) 1989 The Regents of the University of California. | |
3 | * All rights reserved. | |
4 | * | |
5 | * This code is derived from software contributed to Berkeley by | |
6 | * Adam S. Moskowitz of Menlo Consulting. | |
7 | * | |
8 | * Redistribution and use in source and binary forms, with or without | |
9 | * modification, are permitted provided that the following conditions | |
10 | * are met: | |
11 | * 1. Redistributions of source code must retain the above copyright | |
12 | * notice, this list of conditions and the following disclaimer. | |
13 | * 2. Redistributions in binary form must reproduce the above copyright | |
14 | * notice, this list of conditions and the following disclaimer in the | |
15 | * documentation and/or other materials provided with the distribution. | |
16 | * 3. All advertising materials mentioning features or use of this software | |
17 | * must display the following acknowledgement: | |
18 | * This product includes software developed by the University of | |
19 | * California, Berkeley and its contributors. | |
20 | * 4. Neither the name of the University nor the names of its contributors | |
21 | * may be used to endorse or promote products derived from this software | |
22 | * without specific prior written permission. | |
23 | * | |
24 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
25 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
26 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
27 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
28 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
29 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
30 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
31 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
32 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
33 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
34 | * SUCH DAMAGE. | |
35 | */ | |
36 | ||
37 | #ifndef lint | |
38 | char copyright[] = | |
39 | "@(#) Copyright (c) 1989 The Regents of the University of California.\n\ | |
40 | All rights reserved.\n"; | |
41 | #endif /* not lint */ | |
42 | ||
43 | #ifndef lint | |
44 | static char sccsid[] = "@(#)paste.c 5.7 (Berkeley) 10/30/90"; | |
45 | #endif /* not lint */ | |
46 | ||
47 | #include <sys/types.h> | |
48 | #include <errno.h> | |
49 | #include <limits.h> | |
50 | #include <stdio.h> | |
51 | #include <string.h> | |
52 | ||
53 | char *delim; | |
54 | int delimcnt; | |
55 | ||
56 | main(argc, argv) | |
57 | int argc; | |
58 | char **argv; | |
59 | { | |
60 | extern char *optarg; | |
61 | extern int optind; | |
62 | int ch, seq; | |
63 | ||
64 | seq = 0; | |
65 | while ((ch = getopt(argc, argv, "d:s")) != EOF) | |
66 | switch(ch) { | |
67 | case 'd': | |
68 | delimcnt = tr(delim = optarg); | |
69 | break; | |
70 | case 's': | |
71 | seq = 1; | |
72 | break; | |
73 | case '?': | |
74 | default: | |
75 | usage(); | |
76 | } | |
77 | argc -= optind; | |
78 | argv += optind; | |
79 | ||
80 | if (!delim) { | |
81 | delimcnt = 1; | |
82 | delim = "\t"; | |
83 | } | |
84 | ||
85 | if (seq) | |
86 | sequential(argv); | |
87 | else | |
88 | parallel(argv); | |
89 | exit(0); | |
90 | } | |
91 | ||
92 | typedef struct _list { | |
93 | struct _list *next; | |
94 | FILE *fp; | |
95 | int cnt; | |
96 | char *name; | |
97 | } LIST; | |
98 | ||
99 | parallel(argv) | |
100 | char **argv; | |
101 | { | |
102 | register LIST *lp; | |
103 | register int cnt; | |
104 | register char ch, *p; | |
105 | LIST *head, *tmp; | |
106 | int opencnt, output; | |
107 | char buf[_POSIX2_LINE_MAX + 1], *malloc(); | |
108 | ||
109 | for (cnt = 0, head = NULL; p = *argv; ++argv, ++cnt) { | |
110 | if (!(lp = (LIST *)malloc((u_int)sizeof(LIST)))) { | |
111 | (void)fprintf(stderr, "paste: %s.\n", strerror(ENOMEM)); | |
112 | exit(1); | |
113 | } | |
114 | if (p[0] == '-' && !p[1]) | |
115 | lp->fp = stdin; | |
116 | else if (!(lp->fp = fopen(p, "r"))) { | |
117 | (void)fprintf(stderr, "paste: %s: %s.\n", p, | |
118 | strerror(errno)); | |
119 | exit(1); | |
120 | } | |
121 | lp->next = NULL; | |
122 | lp->cnt = cnt; | |
123 | lp->name = p; | |
124 | if (!head) | |
125 | head = tmp = lp; | |
126 | else { | |
127 | tmp->next = lp; | |
128 | tmp = lp; | |
129 | } | |
130 | } | |
131 | ||
132 | for (opencnt = cnt; opencnt;) { | |
133 | for (output = 0, lp = head; lp; lp = lp->next) { | |
134 | if (!lp->fp) { | |
135 | if (output && lp->cnt && | |
136 | (ch = delim[(lp->cnt - 1) % delimcnt])) | |
137 | putchar(ch); | |
138 | continue; | |
139 | } | |
140 | if (!fgets(buf, sizeof(buf), lp->fp)) { | |
141 | if (!--opencnt) | |
142 | break; | |
143 | lp->fp = NULL; | |
144 | if (output && lp->cnt && | |
145 | (ch = delim[(lp->cnt - 1) % delimcnt])) | |
146 | putchar(ch); | |
147 | continue; | |
148 | } | |
149 | if (!(p = index(buf, '\n'))) { | |
150 | (void)fprintf(stderr, | |
151 | "paste: %s: input line too long.\n", | |
152 | lp->name); | |
153 | exit(1); | |
154 | } | |
155 | *p = '\0'; | |
156 | /* | |
157 | * make sure that we don't print any delimiters | |
158 | * unless there's a non-empty file. | |
159 | */ | |
160 | if (!output) { | |
161 | output = 1; | |
162 | for (cnt = 0; cnt < lp->cnt; ++cnt) | |
163 | if (ch = delim[cnt % delimcnt]) | |
164 | putchar(ch); | |
165 | } else if (ch = delim[(lp->cnt - 1) % delimcnt]) | |
166 | putchar(ch); | |
167 | (void)printf("%s", buf); | |
168 | } | |
169 | if (output) | |
170 | putchar('\n'); | |
171 | } | |
172 | } | |
173 | ||
174 | sequential(argv) | |
175 | char **argv; | |
176 | { | |
177 | register FILE *fp; | |
178 | register int cnt; | |
179 | register char ch, *p, *dp; | |
180 | char buf[_POSIX2_LINE_MAX + 1]; | |
181 | ||
182 | for (; p = *argv; ++argv) { | |
183 | if (p[0] == '-' && !p[1]) | |
184 | fp = stdin; | |
185 | else if (!(fp = fopen(p, "r"))) { | |
186 | (void)fprintf(stderr, "paste: %s: %s.\n", p, | |
187 | strerror(errno)); | |
188 | continue; | |
189 | } | |
190 | if (fgets(buf, sizeof(buf), fp)) { | |
191 | for (cnt = 0, dp = delim;;) { | |
192 | if (!(p = index(buf, '\n'))) { | |
193 | (void)fprintf(stderr, | |
194 | "paste: %s: input line too long.\n", | |
195 | *argv); | |
196 | exit(1); | |
197 | } | |
198 | *p = '\0'; | |
199 | (void)printf("%s", buf); | |
200 | if (!fgets(buf, sizeof(buf), fp)) | |
201 | break; | |
202 | if (ch = *dp++) | |
203 | putchar(ch); | |
204 | if (++cnt == delimcnt) { | |
205 | dp = delim; | |
206 | cnt = 0; | |
207 | } | |
208 | } | |
209 | putchar('\n'); | |
210 | } | |
211 | if (fp != stdin) | |
212 | (void)fclose(fp); | |
213 | } | |
214 | } | |
215 | ||
216 | tr(arg) | |
217 | char *arg; | |
218 | { | |
219 | register int cnt; | |
220 | register char ch, *p; | |
221 | ||
222 | for (p = arg, cnt = 0; (ch = *p++); ++arg, ++cnt) | |
223 | if (ch == '\\') | |
224 | switch(ch = *p++) { | |
225 | case 'n': | |
226 | *arg = '\n'; | |
227 | break; | |
228 | case 't': | |
229 | *arg = '\t'; | |
230 | break; | |
231 | case '0': | |
232 | *arg = '\0'; | |
233 | break; | |
234 | default: | |
235 | *arg = ch; | |
236 | break; | |
237 | } else | |
238 | *arg = ch; | |
239 | ||
240 | if (!cnt) { | |
241 | (void)fprintf(stderr, "paste: no delimiters specified.\n"); | |
242 | exit(1); | |
243 | } | |
244 | return(cnt); | |
245 | } | |
246 | ||
247 | usage() | |
248 | { | |
249 | (void)fprintf(stderr, "paste: [-s] [-d delimiters] file ...\n"); | |
250 | exit(1); | |
251 | } |