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

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Revision 111 - (show annotations)
Tue Mar 6 23:59:46 2001 UTC (23 years ago) by frodo
File MIME type: text/plain
File size: 8773 byte(s)
(Frodo) Many changes to sheets

1 /*
2 parse_page.c - Part of psiconv, a PSION 5 file formats converter
3 Copyright (c) 1999, 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 <stdlib.h>
24 #include <string.h>
25
26 #include "parse_routines.h"
27 #include "error.h"
28
29 int psiconv_parse_page_header(const psiconv_buffer buf,int lev,psiconv_u32 off,
30 int *length,psiconv_page_header *result)
31 {
32 int res = 0;
33 int len = 0;
34 int i,leng,has_content;
35 psiconv_u32 temp;
36
37 psiconv_progress(lev+1,off,"Going to read a page header (or footer)");
38 if (!(*result = malloc(sizeof(**result))))
39 goto ERROR1;
40
41 psiconv_progress(lev+2,off+len,
42 "Going to read the has_content flag");
43 temp = psiconv_read_u8(buf,lev+2,off+len,&res);
44 if (res)
45 goto ERROR2;
46 if (temp == 0x00)
47 has_content = 0;
48 else if (temp == 0x01)
49 has_content = 1;
50 else {
51 psiconv_warn(lev+2,off+len,
52 "Page header has_content flag unknown value (assumed default)");
53 psiconv_debug(lev+2,off+len,"Flag: %02x",temp);
54 has_content = 1;
55 }
56 psiconv_debug(lev+2,off+len,"Has_content flag: %02x",has_content);
57 len += 1;
58
59 psiconv_progress(lev+2,off+len,"Going to read displayed-on-first-page flag");
60 if ((res = psiconv_parse_bool(buf,lev+2,off+len,&leng,
61 &(*result)->on_first_page)))
62 goto ERROR2;
63 len += leng;
64
65 psiconv_progress(lev+2,off+len,"Going to read three zero bytes");
66 for (i = 0; i < 0x03; i++,len++) {
67 temp = psiconv_read_u8(buf,lev+2,off+len,&res);
68 if (res)
69 goto ERROR2;
70 if (temp != 0x00) {
71 psiconv_warn(lev+2,off+len,
72 "Page Header unknown value in zero bytes section");
73 psiconv_debug(lev+2,off+len,"Byte %d: read %02x, expected %02x",
74 i,temp,0x00);
75 }
76 }
77
78 psiconv_progress(lev+2,off+len,"Going to read base paragraph layout");
79 if (!((*result)->base_paragraph_layout = psiconv_basic_paragraph_layout()))
80 goto ERROR2;
81
82 if (has_content) {
83 if ((res = psiconv_parse_paragraph_layout_list(buf,lev+2,off+len,&leng,
84 (*result)->base_paragraph_layout)))
85 goto ERROR3;
86 len += leng;
87 }
88
89 psiconv_progress(lev+2,off+len,"Going to read base character layout");
90 if (!((*result)->base_character_layout = psiconv_basic_character_layout()))
91 goto ERROR3;
92 if (has_content) {
93 if ((res = psiconv_parse_character_layout_list(buf,lev+2,off+len,&leng,
94 (*result)->base_character_layout)))
95 goto ERROR4;
96 }
97 len += leng;
98
99
100 psiconv_progress(lev+2,off+len,"Going to read the TextEd section");
101 if (has_content) {
102 if ((res = psiconv_parse_texted_section(buf,lev+2,off+len,&leng,
103 &(*result)->text,
104 (*result)->base_character_layout,
105 (*result)->base_paragraph_layout)))
106 goto ERROR4;
107 len += leng;
108 }
109
110 if (length)
111 *length = len;
112
113 psiconv_progress(lev+1,off+len-1,"End of page header"
114 "(total length: %08x", len);
115
116 return res;
117
118 ERROR4:
119 psiconv_free_character_layout((*result)->base_character_layout);
120 ERROR3:
121 psiconv_free_paragraph_layout((*result)->base_paragraph_layout);
122 ERROR2:
123 free (*result);
124 ERROR1:
125 psiconv_warn(lev+1,off,"Reading of Page Header failed");
126 if (length)
127 *length = 0;
128 if (!res)
129 return -PSICONV_E_NOMEM;
130 else
131 return res;
132 }
133
134 int psiconv_parse_page_layout_section(const psiconv_buffer buf,int lev,
135 psiconv_u32 off, int *length,
136 psiconv_page_layout_section *result)
137 {
138 int res = 0;
139 int len = 0;
140 int leng;
141 psiconv_u32 temp;
142
143 psiconv_progress(lev+1,off,"Going to read the page layout section");
144 if (!(*result = malloc(sizeof(**result))))
145 goto ERROR1;
146
147 psiconv_progress(lev+2,off+len,"Going to read first page number");
148 (*result)->first_page_nr = psiconv_read_u32(buf,lev+2,off+len,&res);
149 if (res)
150 goto ERROR2;
151 psiconv_debug(lev+2,off+len,"First page: %d",(*result)->first_page_nr);
152 len += 4;
153
154 psiconv_progress(lev+2,off+len,"Going to read header distance");
155 (*result)->header_dist = psiconv_read_length(buf,lev+2,off+len,&leng,&res);
156 if (res)
157 goto ERROR2;
158 psiconv_debug(lev+2,off+len,"Header distance: %6.3f",(*result)->header_dist);
159 len += leng;
160
161 psiconv_progress(lev+2,off+len,"Going to read footer distance");
162 (*result)->footer_dist = psiconv_read_length(buf,lev+2,off+len,&leng,&res);
163 if (res)
164 goto ERROR2;
165 psiconv_debug(lev+2,off+len,"Footer distance: %6.3f",(*result)->footer_dist);
166 len += leng;
167
168 psiconv_progress(lev+2,off+len,"Going to read the left margin");
169 (*result)->left_margin = psiconv_read_length(buf,lev+2,off+len,&leng,&res);
170 if (res)
171 goto ERROR2;
172 psiconv_debug(lev+2,off+len,"Left margin: %6.3f",(*result)->left_margin);
173 len += leng;
174
175 psiconv_progress(lev+2,off+len,"Going read the to right margin");
176 (*result)->right_margin = psiconv_read_length(buf,lev+2,off+len,&leng,&res);
177 if (res)
178 goto ERROR2;
179 psiconv_debug(lev+2,off+len,"Right margin: %6.3f",(*result)->right_margin);
180 len += leng;
181
182 psiconv_progress(lev+2,off+len,"Going to read the top margin");
183 (*result)->top_margin = psiconv_read_length(buf,lev+2,off+len,&leng,&res);
184 if (res)
185 goto ERROR2;
186 psiconv_debug(lev+2,off+len,"Top margin: %6.3f",(*result)->top_margin);
187 len += leng;
188
189 psiconv_progress(lev+2,off+len,"Going to read the bottom margin");
190 (*result)->bottom_margin = psiconv_read_length(buf,lev+2,off+len,&leng,&res);
191 if (res)
192 goto ERROR2;
193 psiconv_debug(lev+2,off+len,"Bottom margin: %6.3f",(*result)->bottom_margin);
194 len += leng;
195
196 psiconv_progress(lev+2,off+len,"Going to read the header");
197 if ((res = psiconv_parse_page_header(buf,lev+2,off+len,&leng,
198 &(*result)->header)))
199 goto ERROR2;
200 len += leng;
201
202 psiconv_progress(lev+2,off+len,"Going to read the footer");
203 if ((res = psiconv_parse_page_header(buf,lev+2,off+len,&leng,
204 &(*result)->footer)))
205 goto ERROR3;
206 len += leng;
207
208 psiconv_progress(lev+2,off+len,"Going to read page dimensions id");
209 temp = psiconv_read_u32(buf,lev+2,off+len,&res);
210 if (res)
211 goto ERROR4;
212 if ((temp != PSICONV_ID_PAGE_DIMENSIONS1) &&
213 (temp != PSICONV_ID_PAGE_DIMENSIONS2)) {
214 psiconv_warn(lev+2,off+len,
215 "Page layout section page dimensions marker not found");
216 psiconv_debug(lev+2,off+len,
217 "Page dimensions marker: read %08x, expected %08x or %08x",
218 temp, PSICONV_ID_PAGE_DIMENSIONS1,
219 PSICONV_ID_PAGE_DIMENSIONS2);
220 }
221 len += 4;
222
223 psiconv_progress(lev+2,off+len,"Going to read the page width");
224 (*result)->page_width = psiconv_read_length(buf,lev+2,off+len,&leng,&res);
225 if (res)
226 goto ERROR4;
227 psiconv_debug(lev+2,off+len,"Page width: %6.3f",(*result)->page_width);
228 len += leng;
229
230 psiconv_progress(lev+2,off+len,"Going to read the page height");
231 (*result)->page_height = psiconv_read_length(buf,lev+2,off+len,&leng,&res);
232 if (res)
233 goto ERROR4;
234 psiconv_debug(lev+2,off+len,"Page height: %6.3f",(*result)->page_height);
235 len += leng;
236
237 psiconv_progress(lev+2,off+len,"Going to read page portrait/landscape");
238 if ((res = psiconv_parse_bool(buf,lev+2,off+len,&leng,&(*result)->landscape)))
239 goto ERROR4;
240 psiconv_debug(lev+2,off+len,"Landscape: %d",(*result)->landscape);
241 len += leng;
242
243
244 if (length)
245 *length = len;
246
247 psiconv_progress(lev,off+len-1,"End of page section (total length: %08x)",
248 len);
249
250 return res;
251
252 ERROR4:
253 psiconv_free_page_header((*result)->footer);
254 ERROR3:
255 psiconv_free_page_header((*result)->header);
256 ERROR2:
257 free (*result);
258 ERROR1:
259 psiconv_warn(lev+1,off,"Reading of Page Section failed");
260 if (length)
261 *length = 0;
262 if (!res)
263 return -PSICONV_E_NOMEM;
264 else
265 return res;
266 }

frodo@frodo.looijaard.name
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