/[MITgcm]/MITgcm/tools/mpack-1.6/codes.c
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Contents of /MITgcm/tools/mpack-1.6/codes.c

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Revision 1.1 - (show annotations) (download)
Tue Aug 26 20:45:25 2003 UTC (20 years, 7 months ago) by edhill
Branch: MAIN
CVS Tags: checkpoint58l_post, checkpoint51k_post, checkpoint57t_post, checkpoint57o_post, checkpoint52l_pre, checkpoint52e_pre, hrcube4, checkpoint58e_post, mitgcm_mapl_00, checkpoint52n_post, checkpoint52j_post, checkpoint53d_post, checkpoint58u_post, checkpoint58w_post, checkpoint54a_pre, checkpoint51o_pre, checkpoint57m_post, checkpoint55c_post, checkpoint54e_post, checkpoint52e_post, checkpoint57s_post, checkpoint51n_pre, checkpoint54a_post, checkpoint53c_post, checkpoint57k_post, checkpoint55d_pre, checkpoint57d_post, checkpoint51l_post, checkpoint57g_post, checkpoint51q_post, checkpoint57b_post, checkpoint57c_pre, checkpoint51j_post, checkpoint58r_post, checkpoint55j_post, checkpoint56b_post, checkpoint57i_post, checkpoint57y_post, hrcube_1, checkpoint57e_post, branch-netcdf, checkpoint52d_pre, checkpoint52l_post, checkpoint55h_post, checkpoint58n_post, checkpoint53b_post, checkpoint58x_post, checkpoint52k_post, checkpoint52b_pre, checkpoint57g_pre, checkpoint54b_post, checkpoint53b_pre, checkpoint55b_post, checkpoint58t_post, checkpoint58h_post, checkpoint54d_post, checkpoint56c_post, checkpoint52m_post, checkpoint57y_pre, checkpoint55, checkpoint53a_post, checkpoint57f_pre, checkpoint57a_post, checkpoint54, checkpoint58q_post, checkpoint54f_post, checkpoint57v_post, checkpoint55g_post, checkpoint51o_post, checkpoint51p_post, checkpoint58j_post, checkpoint52a_pre, checkpoint59e, checkpoint59d, checkpoint59g, checkpoint59f, checkpoint59a, checkpoint55f_post, checkpoint59c, checkpoint59b, checkpoint59m, checkpoint59l, checkpoint59n, checkpoint59i, checkpoint59h, checkpoint59k, checkpoint59j, checkpoint57r_post, checkpoint59, checkpoint58, checkpoint57a_pre, checkpoint55i_post, checkpoint57, checkpoint56, checkpoint51i_post, checkpoint53, checkpoint52, checkpoint51f_post, checkpoint52d_post, eckpoint57e_pre, checkpoint51r_post, checkpoint52a_post, checkpoint57h_done, checkpoint58f_post, checkpoint52b_post, checkpoint53g_post, checkpoint52f_post, branchpoint-genmake2, checkpoint57x_post, checkpoint57n_post, checkpoint52c_post, checkpoint58d_post, checkpoint58c_post, checkpoint57w_post, checkpoint57p_post, checkpint57u_post, checkpoint57f_post, checkpoint58a_post, checkpoint51h_pre, checkpoint51l_pre, checkpoint58i_post, checkpoint57q_post, checkpoint51g_post, checkpoint58g_post, ecco_c52_e35, hrcube5, checkpoint58o_post, checkpoint57z_post, checkpoint57c_post, checkpoint58y_post, checkpoint55e_post, checkpoint58k_post, checkpoint52i_post, checkpoint52j_pre, checkpoint58v_post, checkpoint53f_post, checkpoint55a_post, checkpoint51t_post, checkpoint53d_pre, checkpoint54c_post, checkpoint58s_post, checkpoint58p_post, checkpoint51n_post, checkpoint57j_post, checkpoint58b_post, checkpoint57h_pre, checkpoint51i_pre, checkpoint58m_post, checkpoint57l_post, checkpoint52i_pre, checkpoint51u_post, checkpoint52h_pre, checkpoint52f_pre, checkpoint57h_post, hrcube_2, hrcube_3, checkpoint56a_post, checkpoint51m_post, checkpoint51s_post, checkpoint55d_post
Branch point for: branch-nonh, branch-genmake2, tg2-branch, checkpoint51n_branch, netcdf-sm0
File MIME type: text/plain
Initial check-in of the CMU "mpack" utility.  This allows us to (portably)
send MITgcm output as MIME-encoded email messages and will be used by the
"testreport" script.  The CMU license is basically an "AS-IS" statement.

1 /* (C) Copyright 1993,1994 by Carnegie Mellon University
2 * All Rights Reserved.
3 *
4 * Permission to use, copy, modify, distribute, and sell this software
5 * and its documentation for any purpose is hereby granted without
6 * fee, provided that the above copyright notice appear in all copies
7 * and that both that copyright notice and this permission notice
8 * appear in supporting documentation, and that the name of Carnegie
9 * Mellon University not be used in advertising or publicity
10 * pertaining to distribution of the software without specific,
11 * written prior permission. Carnegie Mellon University makes no
12 * representations about the suitability of this software for any
13 * purpose. It is provided "as is" without express or implied
14 * warranty.
15 *
16 * CARNEGIE MELLON UNIVERSITY DISCLAIMS ALL WARRANTIES WITH REGARD TO
17 * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
18 * AND FITNESS, IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE
19 * FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
20 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
21 * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
22 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
23 * SOFTWARE.
24 */
25 /*
26 Copyright (c) 1991 Bell Communications Research, Inc. (Bellcore)
27
28 Permission to use, copy, modify, and distribute this material
29 for any purpose and without fee is hereby granted, provided
30 that the above copyright notice and this permission notice
31 appear in all copies, and that the name of Bellcore not be
32 used in advertising or publicity pertaining to this
33 material without the specific, prior written permission
34 of an authorized representative of Bellcore. BELLCORE
35 MAKES NO REPRESENTATIONS ABOUT THE ACCURACY OR SUITABILITY
36 OF THIS MATERIAL FOR ANY PURPOSE. IT IS PROVIDED "AS IS",
37 WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES. */
38 #include <stdio.h>
39 #include <string.h>
40 #include <ctype.h>
41 #include "xmalloc.h"
42 #include "md5.h"
43
44 void output64chunk(int c1, int c2, int c3, int pads, FILE *outfile);
45 static char basis_64[] =
46 "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
47
48 int to64(FILE *infile, FILE *outfile, long int limit)
49 {
50 int c1, c2, c3, ct=0, written=0;
51
52 if (limit && limit < 73) return 1;
53
54 while ((c1 = getc(infile)) != EOF) {
55 c2 = getc(infile);
56 if (c2 == EOF) {
57 output64chunk(c1, 0, 0, 2, outfile);
58 } else {
59 c3 = getc(infile);
60 if (c3 == EOF) {
61 output64chunk(c1, c2, 0, 1, outfile);
62 } else {
63 output64chunk(c1, c2, c3, 0, outfile);
64 }
65 }
66 ct += 4;
67 if (ct > 71) {
68 putc('\n', outfile);
69 if (limit) {
70 limit -= ct + 1;
71 if (limit < 73) return 1;
72 }
73 written += 73;
74 ct = 0;
75 }
76 }
77 if (ct) {
78 putc('\n', outfile);
79 ct++;
80 }
81 return written + ct;
82 }
83
84 void output64chunk(int c1, int c2, int c3, int pads, FILE *outfile)
85 {
86 putc(basis_64[c1>>2], outfile);
87 putc(basis_64[((c1 & 0x3)<< 4) | ((c2 & 0xF0) >> 4)], outfile);
88 if (pads == 2) {
89 putc('=', outfile);
90 putc('=', outfile);
91 } else if (pads) {
92 putc(basis_64[((c2 & 0xF) << 2) | ((c3 & 0xC0) >>6)], outfile);
93 putc('=', outfile);
94 } else {
95 putc(basis_64[((c2 & 0xF) << 2) | ((c3 & 0xC0) >>6)], outfile);
96 putc(basis_64[c3 & 0x3F], outfile);
97 }
98 }
99
100 char *md5contextTo64(MD5_CTX *context)
101 {
102 unsigned char digest[18];
103 char encodedDigest[25];
104 int i;
105 char *p;
106
107 MD5Final(digest, context);
108 digest[sizeof(digest)-1] = digest[sizeof(digest)-2] = 0;
109
110 p = encodedDigest;
111 for (i=0; i < sizeof(digest); i+=3) {
112 *p++ = basis_64[digest[i]>>2];
113 *p++ = basis_64[((digest[i] & 0x3)<<4) | ((digest[i+1] & 0xF0)>>4)];
114 *p++ = basis_64[((digest[i+1] & 0xF)<<2) | ((digest[i+2] & 0xC0)>>6)];
115 *p++ = basis_64[digest[i+2] & 0x3F];
116 }
117 *p-- = '\0';
118 *p-- = '=';
119 *p-- = '=';
120 return strsave(encodedDigest);
121 }
122
123 char *md5digest(FILE *infile, long int *len)
124 {
125 MD5_CTX context;
126 char buf[1000];
127 long length = 0;
128 int nbytes;
129
130 MD5Init(&context);
131 while (nbytes = fread(buf, 1, sizeof(buf), infile)) {
132 length += nbytes;
133 MD5Update(&context, buf, nbytes);
134 }
135 rewind(infile);
136 if (len) *len = length;
137 return md5contextTo64(&context);
138 }

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