lib/psiconv/parse_texted.c

/*
    parse_texted.c - Part of psiconv, a PSION 5 file formats converter
    Copyright (c) 1999, 2000  Frodo Looijaard <frodol@dds.nl>

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/

#include "config.h"
#include "compat.h"

#include <stdlib.h>

#include "parse_routines.h"
#include "error.h"

int psiconv_parse_texted_section(const psiconv_buffer buf,int lev,
                                 psiconv_u32 off, int *length,
                                 psiconv_texted_section *result,
                                 psiconv_character_layout base_char,
                                 psiconv_paragraph_layout base_para)
{
  int res = 0;
  int len = 0;
  psiconv_u32 layout_sec = 0;
  psiconv_u32 unknown_sec = 0;
  psiconv_u32 replacement_sec = 0;
  psiconv_u32 temp;
  int leng;

  psiconv_progress(lev+1,off,"Going to read a texted section");
  if (!((*result) = malloc(sizeof(**result))))
    goto ERROR1;

  psiconv_progress(lev+2,off+len,"Going to read section id");
  temp = psiconv_read_u32(buf,lev+2,off+len,&res);
  if (res)
    goto ERROR2;
  if (temp != PSICONV_ID_TEXTED_BODY) {
    psiconv_warn(lev+2,off+len,
                 "Page header section body id not found");
    psiconv_debug(lev+2,off+len,
                  "Page body id: read %08x, expected %08x",temp,
                  PSICONV_ID_TEXTED);
    res = -PSICONV_E_PARSE;
    goto ERROR2;
  }
  len += 4;

  psiconv_progress(lev+2,off+len,"Going to read the section jumptable");
  while (temp = psiconv_read_u32(buf,lev+3,off+len,&res), 
         !res && temp != PSICONV_ID_TEXTED_TEXT) {
    len += 4;
    if (temp == PSICONV_ID_TEXTED_LAYOUT) {
      layout_sec = psiconv_read_u32(buf,lev+3,off+len,&res);
      if (res)
        goto ERROR2;
      psiconv_debug(lev+3,off+len,"Found Layout section at %08x",layout_sec);
    } else if (temp == PSICONV_ID_TEXTED_REPLACEMENT) {
      replacement_sec = psiconv_read_u32(buf,lev+3,off+len,&res);
      if (res)
        goto ERROR2;
      psiconv_debug(lev+3,off+len,"Found Replacement section at %08x",
                    replacement_sec);
    } else if (temp == PSICONV_ID_TEXTED_UNKNOWN) {
      unknown_sec= psiconv_read_u32(buf,lev+3,off+len,&res);
      if (res)
        goto ERROR2;
      if (unknown_sec) {
        psiconv_warn(lev+3,off+len,
             "Unknown section in TextEd jumptable has real offset (ignoring)");
      }
      psiconv_debug(lev+3,off+len,"Found Unknown section at %08x",
                    unknown_sec);
    } else {
      psiconv_warn(lev+3,off+len,
                   "Unknown section in TextEd jumptable (ignoring)");
      psiconv_debug(lev+3,off+len,"Section ID %08x at offset %08x",temp,
                    psiconv_read_u32(buf,lev+3,off+len,NULL));
    }
    len += 4;
  }
  if (res)
    goto ERROR2;
  
  len += 4;
  psiconv_progress(lev+2,off+len,"Going to read the text");
  if ((res = psiconv_parse_text_section(buf,lev+2,off+len,&leng,
                                        &(*result)->paragraphs)))
    goto ERROR2;
  len += leng;
  
  if (layout_sec) {
    psiconv_progress(lev+2,off+len,"Going to read the layout");
    if ((res = psiconv_parse_styleless_layout_section(buf,lev+2,layout_sec,NULL,
                                           (*result)->paragraphs,
                                           base_char,base_para)))
      goto ERROR3;
  }

#if 0
  if (replacement_sec) {
    psiconv_progress(lev+2,off+len,"Going to read the replacements");
    /* WHATEVER */
   }
#endif
    
  if (length)
    *length = len;

  psiconv_progress(lev+1,off+len-1,"End of TextEd section "
                   "(total length: %08x", len);

  return 0;

ERROR3:
  psiconv_free_text_and_layout((*result)->paragraphs);
ERROR2:
  free (*result);
ERROR1:
  psiconv_warn(lev+1,off,"Reading of TextEd Section failed");
  if (length)
    *length = 0;
   if (!res)
     return -PSICONV_E_NOMEM;
   else
    return res;
}


1	frodo	2	/*
2			parse_texted.c - Part of psiconv, a PSION 5 file formats converter
3	frodo	63	Copyright (c) 1999, 2000 Frodo Looijaard <frodol@dds.nl>
4	frodo	2
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	frodo	71	#include "compat.h"
22
23	frodo	2	#include <stdlib.h>
24
25			#include "parse_routines.h"
26	frodo	71	#include "error.h"
27	frodo	2
28			int psiconv_parse_texted_section(const psiconv_buffer buf,int lev,
29			psiconv_u32 off, int *length,
30			psiconv_texted_section *result,
31			psiconv_character_layout base_char,
32			psiconv_paragraph_layout base_para)
33			{
34			int res = 0;
35			int len = 0;
36			psiconv_u32 layout_sec = 0;
37			psiconv_u32 unknown_sec = 0;
38			psiconv_u32 replacement_sec = 0;
39			psiconv_u32 temp;
40			int leng;
41
42			psiconv_progress(lev+1,off,"Going to read a texted section");
43	frodo	64	if (!((result) = malloc(sizeof(*result))))
44			goto ERROR1;
45	frodo	2
46			psiconv_progress(lev+2,off+len,"Going to read section id");
47	frodo	64	temp = psiconv_read_u32(buf,lev+2,off+len,&res);
48			if (res)
49			goto ERROR2;
50	frodo	2	if (temp != PSICONV_ID_TEXTED_BODY) {
51			psiconv_warn(lev+2,off+len,
52			"Page header section body id not found");
53			psiconv_debug(lev+2,off+len,
54			"Page body id: read %08x, expected %08x",temp,
55			PSICONV_ID_TEXTED);
56	frodo	64	res = -PSICONV_E_PARSE;
57			goto ERROR2;
58	frodo	2	}
59			len += 4;
60
61			psiconv_progress(lev+2,off+len,"Going to read the section jumptable");
62	frodo	64	while (temp = psiconv_read_u32(buf,lev+3,off+len,&res),
63			!res && temp != PSICONV_ID_TEXTED_TEXT) {
64	frodo	2	len += 4;
65			if (temp == PSICONV_ID_TEXTED_LAYOUT) {
66	frodo	64	layout_sec = psiconv_read_u32(buf,lev+3,off+len,&res);
67			if (res)
68			goto ERROR2;
69	frodo	2	psiconv_debug(lev+3,off+len,"Found Layout section at %08x",layout_sec);
70			} else if (temp == PSICONV_ID_TEXTED_REPLACEMENT) {
71	frodo	64	replacement_sec = psiconv_read_u32(buf,lev+3,off+len,&res);
72			if (res)
73			goto ERROR2;
74	frodo	2	psiconv_debug(lev+3,off+len,"Found Replacement section at %08x",
75			replacement_sec);
76			} else if (temp == PSICONV_ID_TEXTED_UNKNOWN) {
77	frodo	64	unknown_sec= psiconv_read_u32(buf,lev+3,off+len,&res);
78			if (res)
79			goto ERROR2;
80	frodo	2	if (unknown_sec) {
81			psiconv_warn(lev+3,off+len,
82	frodo	64	"Unknown section in TextEd jumptable has real offset (ignoring)");
83	frodo	2	}
84			psiconv_debug(lev+3,off+len,"Found Unknown section at %08x",
85			unknown_sec);
86			} else {
87	frodo	64	psiconv_warn(lev+3,off+len,
88			"Unknown section in TextEd jumptable (ignoring)");
89	frodo	2	psiconv_debug(lev+3,off+len,"Section ID %08x at offset %08x",temp,
90	frodo	64	psiconv_read_u32(buf,lev+3,off+len,NULL));
91	frodo	2	}
92			len += 4;
93			}
94	frodo	64	if (res)
95			goto ERROR2;
96	frodo	2
97			len += 4;
98			psiconv_progress(lev+2,off+len,"Going to read the text");
99	frodo	64	if ((res = psiconv_parse_text_section(buf,lev+2,off+len,&leng,
100			&(*result)->paragraphs)))
101			goto ERROR2;
102	frodo	2	len += leng;
103
104			if (layout_sec) {
105			psiconv_progress(lev+2,off+len,"Going to read the layout");
106	frodo	64	if ((res = psiconv_parse_styleless_layout_section(buf,lev+2,layout_sec,NULL,
107	frodo	2	(*result)->paragraphs,
108	frodo	64	base_char,base_para)))
109			goto ERROR3;
110	frodo	2	}
111
112			#if 0
113			if (replacement_sec) {
114			psiconv_progress(lev+2,off+len,"Going to read the replacements");
115			/* WHATEVER */
116			}
117			#endif
118
119			if (length)
120			*length = len;
121
122			psiconv_progress(lev+1,off+len-1,"End of TextEd section "
123			"(total length: %08x", len);
124
125	frodo	64	return 0;
126
127			ERROR3:
128			psiconv_free_text_and_layout((*result)->paragraphs);
129			ERROR2:
130			free (*result);
131			ERROR1:
132			psiconv_warn(lev+1,off,"Reading of TextEd Section failed");
133			if (length)
134			*length = 0;
135			if (!res)
136			return -PSICONV_E_NOMEM;
137			else
138			return res;
139	frodo	2	}
140
141
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