lib/psiconv/parse_texted.c

/*
    parse_texted.c - Part of psiconv, a PSION 5 file formats converter
    Copyright (c) 1999-2014  Frodo Looijaard <frodo@frodo.looijaard.name>

    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"

#ifdef DMALLOC
#include <dmalloc.h>
#endif

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

  psiconv_progress(config,lev+2,off+len,"Going to read section id");
  temp = psiconv_read_u32(config,buf,lev+2,off+len,&res);
  if (res)
    goto ERROR2;
  if (temp != PSICONV_ID_TEXTED_BODY) {
    psiconv_error(config,lev+2,off+len,
                 "Page header section body id not found");
    psiconv_debug(config,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(config,lev+2,off+len,"Going to read the section jumptable");
  while (temp = psiconv_read_u32(config,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(config,buf,lev+3,off+len,&res);
      if (res)
        goto ERROR2;
      psiconv_debug(config,lev+3,off+len,"Found Layout section at %08x",layout_sec);
    } else if (temp == PSICONV_ID_TEXTED_REPLACEMENT) {
      replacement_sec = psiconv_read_u32(config,buf,lev+3,off+len,&res);
      if (res)
        goto ERROR2;
      psiconv_debug(config,lev+3,off+len,"Found Replacement section at %08x",
                    replacement_sec);
    } else if (temp == PSICONV_ID_TEXTED_UNKNOWN) {
      unknown_sec= psiconv_read_u32(config,buf,lev+3,off+len,&res);
      if (res)
        goto ERROR2;
      if (unknown_sec) {
        psiconv_warn(config,lev+3,off+len,
             "Unknown section in TextEd jumptable has real offset (ignoring)");
      }
      psiconv_debug(config,lev+3,off+len,"Found Unknown section at %08x",
                    unknown_sec);
    } else {
      psiconv_warn(config,lev+3,off+len,
                   "Unknown section in TextEd jumptable (ignoring)");
      psiconv_debug(config,lev+3,off+len,"Section ID %08x at offset %08x",temp,
                    psiconv_read_u32(config,buf,lev+3,off+len,NULL));
    }
    len += 4;
  }
  if (res)
    goto ERROR2;
  
  len += 4;
  psiconv_progress(config,lev+2,off+len,"Going to read the text");
  if ((res = psiconv_parse_text_section(config,buf,lev+2,off+len,&leng,
                                        &(*result)->paragraphs)))
    goto ERROR2;
  len += leng;
  
  if (layout_sec) {
    psiconv_progress(config,lev+2,off+len,"Going to read the layout");
    if ((res = psiconv_parse_styleless_layout_section(config,buf,lev+2,layout_sec,NULL,
                                           (*result)->paragraphs,
                                           base_char,base_para)))
      goto ERROR3;
  }

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

  psiconv_progress(config,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_error(config,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	351	Copyright (c) 1999-2014 Frodo Looijaard <frodo@frodo.looijaard.name>
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	frodo	142	#ifdef DMALLOC
29			#include <dmalloc.h>
30			#endif
31
32	frodo	168	int psiconv_parse_texted_section(const psiconv_config config,
33			const psiconv_buffer buf,int lev,
34	frodo	2	psiconv_u32 off, int *length,
35			psiconv_texted_section *result,
36			psiconv_character_layout base_char,
37			psiconv_paragraph_layout base_para)
38			{
39			int res = 0;
40			int len = 0;
41			psiconv_u32 layout_sec = 0;
42			psiconv_u32 unknown_sec = 0;
43			psiconv_u32 replacement_sec = 0;
44			psiconv_u32 temp;
45			int leng;
46
47	frodo	168	psiconv_progress(config,lev+1,off,"Going to read a texted section");
48	frodo	64	if (!((result) = malloc(sizeof(*result))))
49			goto ERROR1;
50	frodo	2
51	frodo	168	psiconv_progress(config,lev+2,off+len,"Going to read section id");
52			temp = psiconv_read_u32(config,buf,lev+2,off+len,&res);
53	frodo	64	if (res)
54			goto ERROR2;
55	frodo	2	if (temp != PSICONV_ID_TEXTED_BODY) {
56	frodo	184	psiconv_error(config,lev+2,off+len,
57	frodo	2	"Page header section body id not found");
58	frodo	168	psiconv_debug(config,lev+2,off+len,
59	frodo	2	"Page body id: read %08x, expected %08x",temp,
60			PSICONV_ID_TEXTED);
61	frodo	64	res = -PSICONV_E_PARSE;
62			goto ERROR2;
63	frodo	2	}
64			len += 4;
65
66	frodo	168	psiconv_progress(config,lev+2,off+len,"Going to read the section jumptable");
67			while (temp = psiconv_read_u32(config,buf,lev+3,off+len,&res),
68	frodo	64	!res && temp != PSICONV_ID_TEXTED_TEXT) {
69	frodo	2	len += 4;
70			if (temp == PSICONV_ID_TEXTED_LAYOUT) {
71	frodo	168	layout_sec = psiconv_read_u32(config,buf,lev+3,off+len,&res);
72	frodo	64	if (res)
73			goto ERROR2;
74	frodo	168	psiconv_debug(config,lev+3,off+len,"Found Layout section at %08x",layout_sec);
75	frodo	2	} else if (temp == PSICONV_ID_TEXTED_REPLACEMENT) {
76	frodo	168	replacement_sec = psiconv_read_u32(config,buf,lev+3,off+len,&res);
77	frodo	64	if (res)
78			goto ERROR2;
79	frodo	168	psiconv_debug(config,lev+3,off+len,"Found Replacement section at %08x",
80	frodo	2	replacement_sec);
81			} else if (temp == PSICONV_ID_TEXTED_UNKNOWN) {
82	frodo	168	unknown_sec= psiconv_read_u32(config,buf,lev+3,off+len,&res);
83	frodo	64	if (res)
84			goto ERROR2;
85	frodo	2	if (unknown_sec) {
86	frodo	168	psiconv_warn(config,lev+3,off+len,
87	frodo	64	"Unknown section in TextEd jumptable has real offset (ignoring)");
88	frodo	2	}
89	frodo	168	psiconv_debug(config,lev+3,off+len,"Found Unknown section at %08x",
90	frodo	2	unknown_sec);
91			} else {
92	frodo	168	psiconv_warn(config,lev+3,off+len,
93	frodo	64	"Unknown section in TextEd jumptable (ignoring)");
94	frodo	168	psiconv_debug(config,lev+3,off+len,"Section ID %08x at offset %08x",temp,
95			psiconv_read_u32(config,buf,lev+3,off+len,NULL));
96	frodo	2	}
97			len += 4;
98			}
99	frodo	64	if (res)
100			goto ERROR2;
101	frodo	2
102			len += 4;
103	frodo	168	psiconv_progress(config,lev+2,off+len,"Going to read the text");
104			if ((res = psiconv_parse_text_section(config,buf,lev+2,off+len,&leng,
105	frodo	64	&(*result)->paragraphs)))
106			goto ERROR2;
107	frodo	2	len += leng;
108
109			if (layout_sec) {
110	frodo	168	psiconv_progress(config,lev+2,off+len,"Going to read the layout");
111			if ((res = psiconv_parse_styleless_layout_section(config,buf,lev+2,layout_sec,NULL,
112	frodo	2	(*result)->paragraphs,
113	frodo	64	base_char,base_para)))
114			goto ERROR3;
115	frodo	2	}
116
117			#if 0
118			if (replacement_sec) {
119	frodo	168	psiconv_progress(config,lev+2,off+len,"Going to read the replacements");
120	frodo	2	/* WHATEVER */
121			}
122			#endif
123
124			if (length)
125			*length = len;
126
127	frodo	168	psiconv_progress(config,lev+1,off+len-1,"End of TextEd section "
128	frodo	2	"(total length: %08x", len);
129
130	frodo	64	return 0;
131
132			ERROR3:
133			psiconv_free_text_and_layout((*result)->paragraphs);
134			ERROR2:
135			free (*result);
136			ERROR1:
137	frodo	184	psiconv_error(config,lev+1,off,"Reading of TextEd Section failed");
138	frodo	64	if (length)
139			*length = 0;
140			if (!res)
141			return -PSICONV_E_NOMEM;
142			else
143			return res;
144	frodo	2	}
145
146
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