/[MITgcm]/MITgcm/tools/mpack-1.6/macbhex.c
ViewVC logotype

Annotation of /MITgcm/tools/mpack-1.6/macbhex.c

Parent Directory Parent Directory | Revision Log Revision Log | View Revision Graph Revision Graph

Revision 1.1 - (hide annotations) (download)
Tue Aug 26 20:45:25 2003 UTC (20 years, 8 months ago) by edhill
Branch: MAIN
CVS Tags: checkpoint64y, checkpoint64x, checkpoint58l_post, checkpoint64z, checkpoint51k_post, checkpoint57t_post, checkpoint64q, checkpoint64p, checkpoint64s, checkpoint64r, checkpoint64u, checkpoint64t, checkpoint64w, checkpoint64v, checkpoint64i, checkpoint64h, checkpoint64k, checkpoint64j, checkpoint64m, checkpoint64l, checkpoint64o, checkpoint64n, checkpoint64a, checkpoint57o_post, checkpoint64c, checkpoint64b, checkpoint64e, checkpoint64d, checkpoint64g, checkpoint64f, 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, checkpoint63p, checkpoint63q, checkpoint63r, checkpoint63s, checkpoint63l, checkpoint63m, checkpoint63n, checkpoint63o, checkpoint63h, checkpoint63i, checkpoint63j, checkpoint63k, checkpoint63d, checkpoint63e, checkpoint63f, checkpoint63g, checkpoint53c_post, checkpoint63a, checkpoint63b, checkpoint63c, checkpoint57k_post, checkpoint55d_pre, checkpoint57d_post, checkpoint51l_post, checkpoint57g_post, checkpoint51q_post, checkpoint64, checkpoint65, checkpoint60, checkpoint61, checkpoint62, checkpoint63, checkpoint57b_post, checkpoint57c_pre, checkpoint51j_post, checkpoint58r_post, checkpoint55j_post, checkpoint56b_post, checkpoint57i_post, checkpoint57y_post, hrcube_1, checkpoint57e_post, checkpoint66g, checkpoint66f, checkpoint66e, checkpoint66d, checkpoint66c, checkpoint66b, checkpoint66a, checkpoint66o, checkpoint66n, checkpoint66m, checkpoint66l, checkpoint66k, checkpoint66j, checkpoint66i, checkpoint66h, 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, checkpoint65z, checkpoint65x, checkpoint65y, checkpoint54d_post, checkpoint65r, checkpoint65s, checkpoint65p, checkpoint65q, checkpoint65v, checkpoint65w, checkpoint65t, checkpoint65u, checkpoint65j, checkpoint65k, checkpoint65h, checkpoint65i, checkpoint65n, checkpoint65o, checkpoint65l, checkpoint65m, checkpoint65b, checkpoint65c, checkpoint65a, checkpoint65f, checkpoint65g, checkpoint65d, checkpoint65e, checkpoint56c_post, checkpoint52m_post, checkpoint57y_pre, checkpoint55, checkpoint53a_post, checkpoint57f_pre, checkpoint57a_post, checkpoint54, checkpoint58q_post, checkpoint54f_post, checkpoint57v_post, checkpoint59q, checkpoint59p, checkpoint55g_post, checkpoint59r, checkpoint51o_post, checkpoint51p_post, checkpoint58j_post, checkpoint52a_pre, checkpoint59e, checkpoint59d, checkpoint59g, checkpoint59f, checkpoint59a, checkpoint55f_post, checkpoint59c, checkpoint59b, checkpoint59m, checkpoint59l, checkpoint59o, 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, checkpoint62c, checkpoint62b, checkpoint62a, checkpoint62g, checkpoint62f, checkpoint62e, checkpoint62d, checkpoint62k, checkpoint62j, checkpoint62i, checkpoint62h, checkpoint62o, checkpoint62n, checkpoint62m, checkpoint62l, checkpoint62s, checkpoint62r, checkpoint62q, checkpoint62p, checkpoint62w, checkpoint62v, checkpoint62u, checkpoint62t, checkpoint57c_post, checkpoint62z, checkpoint62y, checkpoint62x, checkpoint58y_post, checkpoint55e_post, checkpoint58k_post, checkpoint52i_post, checkpoint52j_pre, checkpoint58v_post, checkpoint53f_post, checkpoint55a_post, checkpoint51t_post, checkpoint53d_pre, checkpoint54c_post, checkpoint58s_post, checkpoint61f, checkpoint61g, checkpoint61d, checkpoint61e, checkpoint61b, checkpoint61c, checkpoint58p_post, checkpoint61a, checkpoint61n, checkpoint61o, checkpoint61l, checkpoint61m, checkpoint61j, checkpoint61k, checkpoint61h, checkpoint61i, checkpoint61v, checkpoint61w, checkpoint61t, checkpoint61u, checkpoint61r, checkpoint61s, checkpoint61p, checkpoint61q, checkpoint51n_post, checkpoint57j_post, checkpoint61z, checkpoint61x, checkpoint61y, 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, HEAD
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 edhill 1.1 /* macbhex.c -- simple binhex decoding routine */
2     /* (C) Copyright 1993,1994 by Carnegie Mellon University
3     * All Rights Reserved.
4     *
5     * Permission to use, copy, modify, distribute, and sell this software
6     * and its documentation for any purpose is hereby granted without
7     * fee, provided that the above copyright notice appear in all copies
8     * and that both that copyright notice and this permission notice
9     * appear in supporting documentation, and that the name of Carnegie
10     * Mellon University not be used in advertising or publicity
11     * pertaining to distribution of the software without specific,
12     * written prior permission. Carnegie Mellon University makes no
13     * representations about the suitability of this software for any
14     * purpose. It is provided "as is" without express or implied
15     * warranty.
16     *
17     * CARNEGIE MELLON UNIVERSITY DISCLAIMS ALL WARRANTIES WITH REGARD TO
18     * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
19     * AND FITNESS, IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE
20     * FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
21     * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
22     * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
23     * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
24     * SOFTWARE.
25     */
26    
27     #include <stdio.h>
28     #include <ctype.h>
29     #include <memory.h>
30     #include "part.h"
31     #include "macnapp.h"
32     #include "macmpack.h"
33    
34     /* from macos.c: */
35     extern void renameDescFile(char *, short, long);
36    
37     char binhex_decode[256] = {
38     -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
39     -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
40     -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, -1, -1,
41     13, 14, 15, 16, 17, 18, 19, -1, 20, 21, -1, -1, -1, -1, -1, -1,
42     22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, -1,
43     37, 38, 39, 40, 41, 42, 43, -1, 44, 45, 46, 47, -1, -1, -1, -1,
44     48, 49, 50, 51, 52, 53, 54, -1, 55, 56, 57, 58, 59, 60, -1, -1,
45     61, 62, 63, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
46     -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
47     -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
48     -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
49     -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
50     -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
51     -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
52     -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
53     -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
54     };
55     #define BHEXVAL(c) (binhex_decode[(unsigned char) c])
56    
57     typedef union {
58     unsigned char c[4];
59     unsigned long val;
60     } longbuf;
61    
62     typedef struct {
63     OSType type, creator;
64     unsigned short flags;
65     long dlen, rlen;
66     } binhex_header;
67    
68     #define STATE_START 0
69     #define STATE_FNAME 1
70     #define STATE_HEADER 2
71     #define STATE_HCRC 3
72     #define STATE_DFORK 4
73     #define STATE_DCRC 5
74     #define STATE_RFORK 6
75     #define STATE_RCRC 7
76     #define STATE_DONE 8
77     #define STATE_ERROR 9
78    
79     typedef struct binhex_state {
80     short state; /* current state */
81     short part; /* current part number */
82     unsigned short CRC; /* cumulative CRC */
83     unsigned short fileCRC; /* CRC value from file */
84     longbuf octetbuf; /* buffer for decoded 6-bit values */
85     short octetin; /* current input position in octetbuf */
86     short donepos; /* ending position in octetbuf */
87     short inCRC; /* flag set when reading a CRC */
88     long count; /* generic counter */
89     FILE *outfile; /* output file */
90     short marker; /* flag indicating maker */
91     unsigned char rlebuf; /* buffer for last run length encoding value */
92     PCstr namebuf[65]; /* buffer for binhex filename */
93     binhex_header head; /* buffer for header */
94     FSSpec fspec; /* output file */
95     } binhex_state;
96    
97     /* global state */
98     static binhex_state bh;
99    
100     /* process a binhex character
101     */
102     static void binhex_process(struct part *inpart)
103     {
104     unsigned short tmpcrc, cval;
105     unsigned char ctmp, c = bh.rlebuf;
106     StandardFileReply reply;
107     FInfo finfo;
108     char buf[256];
109    
110     /* do CRC */
111     ctmp = bh.inCRC ? c : 0;
112     cval = bh.CRC & 0xf000;
113     tmpcrc = ((unsigned short) (bh.CRC << 4) | (ctmp >> 4))
114     ^ (cval | (cval >> 7) | (cval >> 12));
115     cval = tmpcrc & 0xf000;
116     bh.CRC = ((unsigned short) (tmpcrc << 4) | (ctmp & 0x0f))
117     ^ (cval | (cval >> 7) | (cval >> 12));
118    
119     /* handle state */
120     switch (bh.state) {
121     case STATE_START:
122     bh.state = STATE_FNAME;
123     bh.count = 1;
124     *bh.namebuf = (c & 63);
125     break;
126     case STATE_FNAME:
127     bh.namebuf[bh.count] = c;
128     if (bh.count++ > *bh.namebuf) {
129     bh.state = STATE_HEADER;
130     bh.count = 0;
131     }
132     break;
133     case STATE_HEADER:
134     ((char *)&bh.head)[bh.count] = c;
135     if (++bh.count == 18) {
136     bh.state = STATE_HCRC;
137     bh.inCRC = 1;
138     bh.count = 0;
139     }
140     break;
141     case STATE_DFORK:
142     case STATE_RFORK:
143     putc(c, bh.outfile);
144     if (--bh.count == 0) {
145     fclose(bh.outfile);
146     bh.outfile = NULL;
147     ++bh.state;
148     bh.inCRC = 1;
149     }
150     break;
151     case STATE_HCRC:
152     case STATE_DCRC:
153     case STATE_RCRC:
154     if (!bh.count++) {
155     bh.fileCRC = (unsigned short) c << 8;
156     } else {
157     if ((bh.fileCRC | c) != bh.CRC) {
158     if (bh.state > STATE_HCRC) {
159     HDelete(bh.fspec.vRefNum, bh.fspec.parID, bh.fspec.name);
160     SetCursor(&arrow);
161     yell("BinHex file corrupted in transit");
162     SetCursor(&watch);
163     }
164     bh.state = STATE_ERROR;
165     break;
166     }
167     bh.CRC = 0;
168     if (++bh.state == STATE_DONE) {
169     finfo.fdType = bh.head.type;
170     finfo.fdCreator = bh.head.creator;
171     finfo.fdFlags = bh.head.flags & 0xf800;
172     HSetFInfo(bh.fspec.vRefNum, bh.fspec.parID, bh.fspec.name, &finfo);
173     PtoCstr(bh.fspec.name);
174     renameDescFile((char *)bh.fspec.name, bh.fspec.vRefNum, bh.fspec.parID);
175     break;
176     }
177     bh.count = bh.head.rlen;
178     if (bh.state == STATE_DFORK) {
179     /* prompt user */
180     sprintf(buf, "Saving BinHex file %s", C(bh.namebuf));
181     chat(buf);
182     SetCursor(&arrow);
183     NAputFile("\pSave decoded BinHex file as:", P(bh.namebuf), &reply);
184     SetCursor(&watch);
185     statrefresh();
186     if (!reply.sfGood) {
187     didchat = -1;
188     bh.state = STATE_ERROR;
189     } else {
190     bh.fspec = reply.sfFile;
191     HCreate(bh.fspec.vRefNum, bh.fspec.parID, bh.fspec.name,
192     bh.head.creator, bh.head.type);
193     bh.count = bh.head.dlen;
194     }
195     }
196     if (bh.count) {
197     bh.inCRC = 0;
198     bh.outfile = Macopen(inpart->infile, bh.fspec.name, bh.fspec.vRefNum,
199     bh.fspec.parID, 1, bh.state == STATE_DFORK ? 0 : 1, fsWrPerm);
200     if (!bh.outfile) {
201     bh.state = STATE_ERROR;
202     HDelete(bh.fspec.vRefNum, bh.fspec.parID, bh.fspec.name);
203     SetCursor(&arrow);
204     yell("Failed to open file for writing");
205     SetCursor(&watch);
206     }
207     } else {
208     ++bh.state;
209     }
210     }
211     break;
212     }
213     }
214    
215     /*
216     * decode a binhex file
217     * returns -1 on fatal error, 0 for continue, 1 for done
218     */
219     int os_binhex(struct part *inpart, int part, int nparts)
220     {
221     long val;
222     int c;
223     char *bptr;
224     short octetpos;
225     static char buf[1024];
226    
227     /* reset state */
228     if (part == 1) {
229     bh.state = STATE_START;
230     bh.part = 0;
231     bh.CRC = 0;
232     bh.octetbuf.val = 0;
233     bh.octetin = 26;
234     bh.donepos = 3;
235     bh.inCRC = 0;
236     bh.outfile = NULL;
237     bh.marker = 0;
238     }
239     if (++bh.part != part) bh.state = STATE_ERROR;
240    
241     /* do nothing on error/completion */
242     if (!inpart) {
243     if (bh.state < STATE_DONE) bh.state = STATE_ERROR;
244     } else {
245     /* skip blank lines */
246     do {
247     if (part_gets(buf, sizeof (buf), inpart) == NULL) return (0);
248     } while (*buf == '\n');
249     bptr = buf;
250     if (part == 1 && *bptr++ != ':') bh.state = STATE_ERROR;
251    
252     /* line reading loop */
253     do {
254     /* check line for separator */
255     if (!strncmp(buf, "--- ", 4)) break;
256     buf[strlen(buf) - 1] = '\0';
257    
258     /* loop through line of binhex charaters */
259     while (bh.state < STATE_DONE) {
260     /* fill in octetbuf */
261     do {
262     if ((val = BHEXVAL(*bptr++)) == -1) {
263     if (bptr[-1]) {
264     --bh.donepos;
265     if (bh.octetin >= 14) --bh.donepos;
266     if (bh.octetin >= 20) --bh.donepos;
267     }
268     break;
269     }
270     bh.octetbuf.val |= val << bh.octetin;
271     } while ((bh.octetin -= 6) > 2);
272     if (!bptr[-1]) break;
273    
274     /* handle decoded characters -- run length encoding (rle) detection */
275     for (octetpos = 0; octetpos < bh.donepos; ++octetpos) {
276     /* get character & handle rle */
277     c = bh.octetbuf.c[octetpos];
278     if (c == 0x90 && !bh.marker++) continue;
279     if (bh.marker) {
280     if (c == 0) {
281     bh.rlebuf = 0x90;
282     binhex_process(inpart);
283     } else {
284     while (--c > 0) {
285     binhex_process(inpart);
286     }
287     }
288     bh.marker = 0;
289     } else {
290     bh.rlebuf = (unsigned char) c;
291     binhex_process(inpart);
292     }
293     if (bh.state >= STATE_DONE) break;
294     }
295     if (bh.donepos < 3 && bh.state < STATE_DONE) bh.state = STATE_ERROR;
296     bh.octetin = 26;
297     bh.octetbuf.val = 0;
298     }
299     } while (bh.state < STATE_DONE && part_gets(bptr = buf, sizeof (buf), inpart) != NULL);
300     }
301    
302     /* error clean up */
303     if (bh.state == STATE_ERROR && bh.outfile) {
304     fclose(bh.outfile);
305     bh.outfile = NULL;
306     HDelete(bh.fspec.vRefNum, bh.fspec.parID, bh.fspec.name);
307     }
308    
309     return (bh.state == STATE_ERROR ? 1 : 0);
310     }
  ViewVC Help
Powered by ViewVC 1.1.22