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1.2 ! deraadt 1: /* $OpenBSD$ */
! 2:
! 3: /*
! 4: * Copyright (C) Caldera International Inc. 2001-2002.
! 5: * All rights reserved.
! 6: *
! 7: * Redistribution and use in source and binary forms, with or without
! 8: * modification, are permitted provided that the following conditions
! 9: * are met:
! 10: * 1. Redistributions of source code and documentation must retain the above
! 11: * copyright notice, this list of conditions and the following disclaimer.
! 12: * 2. Redistributions in binary form must reproduce the above copyright
! 13: * notice, this list of conditions and the following disclaimer in the
! 14: * documentation and/or other materials provided with the distribution.
! 15: * 3. All advertising materials mentioning features or use of this software
! 16: * must display the following acknowledgement:
! 17: * This product includes software developed or owned by Caldera
! 18: * International, Inc.
! 19: * 4. Neither the name of Caldera International, Inc. nor the names of other
! 20: * contributors may be used to endorse or promote products derived from
! 21: * this software without specific prior written permission.
! 22: *
! 23: * USE OF THE SOFTWARE PROVIDED FOR UNDER THIS LICENSE BY CALDERA
! 24: * INTERNATIONAL, INC. AND CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR
! 25: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
! 26: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
! 27: * IN NO EVENT SHALL CALDERA INTERNATIONAL, INC. BE LIABLE FOR ANY DIRECT,
! 28: * INDIRECT INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
! 29: * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
! 30: * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 31: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
! 32: * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
! 33: * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
! 34: * POSSIBILITY OF SUCH DAMAGE.
! 35: */
! 36:
1.1 deraadt 37: static char sccsid[] = "@(#)diff.c 4.7 5/11/89";
38:
39: #include "diff.h"
40: #include "pathnames.h"
41:
42: /*
43: * diff - driver and subroutines
44: */
45:
46: char diff[] = _PATH_DIFF;
47: char diffh[] = _PATH_DIFFH;
48: char pr[] = _PATH_PR;
49:
50: main(argc, argv)
51: int argc;
52: char **argv;
53: {
54: register char *argp;
55:
56: ifdef1 = "FILE1"; ifdef2 = "FILE2";
57: status = 2;
58: diffargv = argv;
59: argc--, argv++;
60: while (argc > 2 && argv[0][0] == '-') {
61: argp = &argv[0][1];
62: argv++, argc--;
63: while (*argp) switch(*argp++) {
64:
65: #ifdef notdef
66: case 'I':
67: opt = D_IFDEF;
68: wantelses = 0;
69: continue;
70: case 'E':
71: opt = D_IFDEF;
72: wantelses = 1;
73: continue;
74: case '1':
75: opt = D_IFDEF;
76: ifdef1 = argp;
77: *--argp = 0;
78: continue;
79: #endif
80: case 'D':
81: /* -Dfoo = -E -1 -2foo */
82: wantelses = 1;
83: ifdef1 = "";
84: /* fall through */
85: #ifdef notdef
86: case '2':
87: #endif
88: opt = D_IFDEF;
89: ifdef2 = argp;
90: *--argp = 0;
91: continue;
92: case 'e':
93: opt = D_EDIT;
94: continue;
95: case 'f':
96: opt = D_REVERSE;
97: continue;
98: case 'n':
99: opt = D_NREVERSE;
100: continue;
101: case 'b':
102: bflag = 1;
103: continue;
104: case 'w':
105: wflag = 1;
106: continue;
107: case 'i':
108: iflag = 1;
109: continue;
110: case 't':
111: tflag = 1;
112: continue;
113: case 'c':
114: opt = D_CONTEXT;
115: if (isdigit(*argp)) {
116: context = atoi(argp);
117: while (isdigit(*argp))
118: argp++;
119: if (*argp) {
120: fprintf(stderr,
121: "diff: -c: bad count\n");
122: done();
123: }
124: argp = "";
125: } else
126: context = 3;
127: continue;
128: case 'h':
129: hflag++;
130: continue;
131: case 'S':
132: if (*argp == 0) {
133: fprintf(stderr, "diff: use -Sstart\n");
134: done();
135: }
136: start = argp;
137: *--argp = 0; /* don't pass it on */
138: continue;
139: case 'r':
140: rflag++;
141: continue;
142: case 's':
143: sflag++;
144: continue;
145: case 'l':
146: lflag++;
147: continue;
148: default:
149: fprintf(stderr, "diff: -%s: unknown option\n",
150: --argp);
151: done();
152: }
153: }
154: if (argc != 2) {
155: fprintf(stderr, "diff: two filename arguments required\n");
156: done();
157: }
158: file1 = argv[0];
159: file2 = argv[1];
160: if (hflag && opt) {
161: fprintf(stderr,
162: "diff: -h doesn't support -e, -f, -n, -c, or -I\n");
163: done();
164: }
165: if (!strcmp(file1, "-"))
166: stb1.st_mode = S_IFREG;
167: else if (stat(file1, &stb1) < 0) {
168: fprintf(stderr, "diff: ");
169: perror(file1);
170: done();
171: }
172: if (!strcmp(file2, "-"))
173: stb2.st_mode = S_IFREG;
174: else if (stat(file2, &stb2) < 0) {
175: fprintf(stderr, "diff: ");
176: perror(file2);
177: done();
178: }
179: if ((stb1.st_mode & S_IFMT) == S_IFDIR &&
180: (stb2.st_mode & S_IFMT) == S_IFDIR) {
181: diffdir(argv);
182: } else
183: diffreg();
184: done();
185: }
186:
187: char *
188: savestr(cp)
189: register char *cp;
190: {
191: register char *dp = malloc(strlen(cp)+1);
192:
193: if (dp == 0) {
194: fprintf(stderr, "diff: ran out of memory\n");
195: done();
196: }
197: strcpy(dp, cp);
198: return (dp);
199: }
200:
201: min(a,b)
202: int a,b;
203: {
204:
205: return (a < b ? a : b);
206: }
207:
208: max(a,b)
209: int a,b;
210: {
211:
212: return (a > b ? a : b);
213: }
214:
215: done()
216: {
217: if (tempfile)
218: unlink(tempfile);
219: exit(status);
220: }
221:
222: char *
223: talloc(n)
224: {
225: register char *p;
226:
227: if ((p = malloc((unsigned)n)) != NULL)
228: return(p);
229: noroom();
230: }
231:
232: char *
233: ralloc(p,n)
234: char *p;
235: {
236: register char *q;
237: char *realloc();
238:
239: if ((q = realloc(p, (unsigned)n)) == NULL)
240: noroom();
241: return(q);
242: }
243:
244: noroom()
245: {
246: fprintf(stderr, "diff: files too big, try -h\n");
247: done();
248: }