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 <stdlib.h>

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