/[public]/psiconv/trunk/lib/psiconv/generate_simple.c
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Contents of /psiconv/trunk/lib/psiconv/generate_simple.c

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Revision 71 - (show annotations)
Fri Dec 22 22:31:50 2000 UTC (23 years, 3 months ago) by frodo
File MIME type: text/plain
File size: 3282 byte(s)
(Frodo) First generate routines! Reshuffled a few things to make it all work out

1 /*
2 generate_simple.c - Part of psiconv, a PSION 5 file formats converter
3 Copyright (c) 2000 Frodo Looijaard <frodol@dds.nl>
4
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2 of the License, or
8 (at your option) any later version.
9
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
14
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
18 */
19
20 #include "config.h"
21 #include "compat.h"
22
23 #include "generate_routines.h"
24 #include "error.h"
25
26 int psiconv_write_u8(psiconv_buffer buf,psiconv_u8 value)
27 {
28 return psiconv_list_add(buf,&value);
29 }
30
31 int psiconv_write_u16(psiconv_buffer buf,psiconv_u16 value)
32 {
33 int res;
34 psiconv_u8 temp;
35 temp = value & 0xff;
36 if ((res = psiconv_list_add(buf,&temp)))
37 return res;
38 temp = (value & 0xff0) >> 8;
39 return psiconv_list_add(buf,&temp);
40 }
41
42 int psiconv_write_u32(psiconv_buffer buf,psiconv_u32 value)
43 {
44 int res;
45 psiconv_u8 temp;
46 temp = value & 0xff;
47 if ((res = psiconv_list_add(buf,&temp)))
48 return res;
49 temp = (value & 0xff00) >> 8;
50 if ((res = psiconv_list_add(buf,&temp)))
51 return res;
52 temp = (value & 0xff0000) >> 16;
53 if ((res = psiconv_list_add(buf,&temp)))
54 return res;
55 temp = (value & 0xff000000) >>24;
56 return psiconv_list_add(buf,&temp);
57 }
58
59 int psiconv_write_S(psiconv_buffer buf, psiconv_u32 value)
60 {
61 if (value < 0x40)
62 return psiconv_write_u8(buf,value * 4 + 2);
63 else if (value < 0x2000)
64 return psiconv_write_u16(buf,value * 8 + 3);
65 else {
66 psiconv_warn(0,psiconv_list_length(buf),
67 "Don't know how to write S value larger than 0x2000 "
68 "(trying %x)",value);
69 return -PSICONV_E_GENERATE;
70 }
71 }
72
73 int psiconv_write_X(psiconv_buffer buf, psiconv_u32 value)
74 {
75 if (value < 0x80)
76 return psiconv_write_u8(buf,value * 2);
77 else if (value < 0x4000)
78 return psiconv_write_u16(buf,value * 4 + 1);
79 else if (value < 0x20000000)
80 return psiconv_write_u16(buf,value * 8 + 3);
81 else {
82 psiconv_warn(0,psiconv_list_length(buf),
83 "Don't know how to write X value larger than 0x20000000 "
84 "(trying %x)",value);
85 return -PSICONV_E_GENERATE;
86 }
87 }
88
89 int psiconv_write_length(psiconv_buffer buf, psiconv_length_t value)
90 {
91 return psiconv_write_u32(buf,value * (1440.0/2.54) + 0.5);
92 }
93
94 int psiconv_write_size(psiconv_buffer buf, psiconv_size_t value)
95 {
96 return psiconv_write_u32(buf,value * 20.0 + 0.5);
97 }
98
99 int psiconv_write_bool(psiconv_buffer buf, psiconv_bool_t value)
100 {
101 return psiconv_write_u8(buf,value == psiconv_bool_true?1:0);
102 }
103
104 int psiconv_write_string(psiconv_buffer buf, psiconv_string_t value)
105 {
106 int res,i;
107 if ((res = psiconv_write_S(buf,strlen(value))))
108 return res;
109 for (i = 0; i < strlen(value); i++)
110 if ((res = psiconv_write_u8(buf,value[i])))
111 return res;
112 return -PSICONV_E_OK;
113 }

frodo@frodo.looijaard.name
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