1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
|
/* pbmtoatk.c - convert portable bitmap to Andrew Toolkit raster object
**
** Copyright (C) 1991 by Bill Janssen.
**
** Permission to use, copy, modify, and distribute this software and its
** documentation for any purpose and without fee is hereby granted, provided
** that the above copyright notice appear in all copies and that both that
** copyright notice and this permission notice appear in supporting
** documentation. This software is provided "as is" without express or
** implied warranty.
*/
#include <stdio.h>
#include <string.h>
#include "pm_c_util.h"
#include "nstring.h"
#include "pbm.h"
#define DEFAULTSCALE (1<<16)
#define RASTERVERSION 2
static void
write_atk_bytes(FILE * const file,
unsigned char const curbyte,
unsigned int const startcount) {
/* codes for data stream */
static unsigned char const whitezero = 'f';
static unsigned char const whitetwenty = 'z';
static unsigned char const blackzero = 'F';
static unsigned char const blacktwenty = 'Z';
static unsigned char const otherzero = 0x1F;
#define WHITEBYTE 0x00
#define BLACKBYTE 0xFF
/* WriteRow table for conversion of a byte value to two character
hex representation
*/
static unsigned char hex[16] = {
'0', '1', '2', '3', '4', '5', '6', '7',
'8', '9', 'a', 'b', 'c', 'd', 'e', 'f'
};
unsigned int curcount;
curcount = startcount; /* initial value */
switch (curbyte) {
case WHITEBYTE:
while (curcount > 20) {
fputc(whitetwenty, file);
curcount -= 20;
}
fputc(whitezero + curcount, file);
break;
case BLACKBYTE:
while (curcount > 20) {
fputc(blacktwenty, file);
curcount -= 20;
}
fputc(blackzero + curcount, file);
break;
default:
while (curcount > 16) {
fputc(otherzero + 16, file);
fputc(hex[curbyte / 16], file);
fputc(hex[curbyte & 15], file);
curcount -= 16;
}
if (curcount > 1)
fputc(otherzero + curcount, file);
else ; /* the byte written will represent a single instance */
fputc(hex[curbyte / 16], file);
fputc(hex[curbyte & 15], file);
}
}
static void
process_atk_byte(int * const pcurcount,
unsigned char * const pcurbyte,
FILE * const file,
unsigned char const newbyte,
int const eolflag) {
int curcount;
unsigned char curbyte;
curcount = *pcurcount; /* initial value */
curbyte = *pcurbyte; /* initial value */
if (curcount < 1) {
*pcurbyte = curbyte = newbyte;
*pcurcount = curcount = 1;
} else if (newbyte == curbyte) {
*pcurcount = (curcount += 1);
}
if (curcount > 0 && newbyte != curbyte) {
write_atk_bytes (file, curbyte, curcount);
*pcurcount = 1;
*pcurbyte = newbyte;
}
if (eolflag) {
write_atk_bytes (file, *pcurbyte, *pcurcount);
fprintf(file, " |\n");
*pcurcount = 0;
*pcurbyte = 0;
}
}
int
main(int argc, char *argv[]) {
FILE *ifd;
bit *bitrow;
register bit *bP;
int rows, cols, format, row;
int col;
char name[100], *cp;
unsigned char curbyte, newbyte;
int curcount, gather;
pbm_init ( &argc, argv );
if (argc-1 > 1)
pm_error("Too many arguments. Only argument is file name");
else if (argc-1 == 1) {
ifd = pm_openr( argv[1] );
strcpy(name, argv[1]);
if (streq( name, "-"))
strcpy(name, "noname");
if ((cp = strchr(name, '.')) != 0)
*cp = '\0';
} else {
ifd = stdin;
strcpy( name, "noname" );
}
pbm_readpbminit(ifd, &cols, &rows, &format);
bitrow = pbm_allocrow(cols);
printf ("\\begindata{raster,%d}\n", 1);
printf ("%d %d %d %d ", RASTERVERSION, 0, DEFAULTSCALE, DEFAULTSCALE);
printf ("%d %d %d %d\n", 0, 0, cols, rows); /* subraster */
printf ("bits %d %d %d\n", 1, cols, rows);
for (row = 0; row < rows; ++row) {
pbm_readpbmrow(ifd, bitrow, cols, format);
bP = bitrow;
gather = 0;
newbyte = 0;
curbyte = 0;
curcount = 0;
col = 0;
while (col < cols) {
if (gather > 7) {
process_atk_byte (&curcount, &curbyte, stdout, newbyte, FALSE);
gather = 0;
newbyte = 0;
}
newbyte = (newbyte << 1) | (*bP++);
gather += 1;
col += 1;
}
if (gather > 0) {
newbyte = (newbyte << (8 - gather));
process_atk_byte (&curcount, &curbyte, stdout, newbyte, TRUE);
}
}
pm_close( ifd );
printf ("\\enddata{raster, %d}\n", 1);
return 0;
}
|
