lib/psiconv/unicode.c

/*
    unicode.c - Part of psiconv, a PSION 5 file formats converter
    Copyright (c) 2003  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 "error.h"

#include "unicode.h"

#include <string.h>

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


psiconv_ucs2 table_cp1252[0x100] =
  {
  /* 0x00 */ 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0006, 0x0007,
  /* 0x08 */ 0x0008, 0x0009, 0x000a, 0x000b, 0x000c, 0x000d, 0x000e, 0x000f,
  /* 0x10 */ 0x00a0, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
  /* 0x18 */ 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
  /* 0x20 */ 0x0020, 0x0021, 0x0022, 0x0023, 0x0024, 0x0025, 0x0026, 0x0027,
  /* 0x28 */ 0x0028, 0x0029, 0x002a, 0x002b, 0x002c, 0x002d, 0x002e, 0x002f,
  /* 0x30 */ 0x0030, 0x0031, 0x0032, 0x0033, 0x0034, 0x0035, 0x0036, 0x0037,
  /* 0x38 */ 0x0038, 0x0039, 0x003a, 0x003b, 0x003c, 0x003d, 0x003e, 0x003f,
  /* 0x40 */ 0x0040, 0x0041, 0x0042, 0x0043, 0x0044, 0x0045, 0x0046, 0x0047,
  /* 0x48 */ 0x0048, 0x0049, 0x004a, 0x004b, 0x004c, 0x004d, 0x004e, 0x004f,
  /* 0x50 */ 0x0050, 0x0051, 0x0052, 0x0053, 0x0054, 0x0055, 0x0056, 0x0057,
  /* 0x58 */ 0x0058, 0x0059, 0x005a, 0x005b, 0x005c, 0x005d, 0x005e, 0x005f,
  /* 0x60 */ 0x0060, 0x0061, 0x0062, 0x0063, 0x0064, 0x0065, 0x0066, 0x0067,
  /* 0x68 */ 0x0068, 0x0069, 0x006a, 0x006b, 0x006c, 0x006d, 0x006e, 0x006f,
  /* 0x70 */ 0x0070, 0x0071, 0x0072, 0x0073, 0x0074, 0x0075, 0x0076, 0x0077,
  /* 0x78 */ 0x0078, 0x0079, 0x007a, 0x007b, 0x007c, 0x007d, 0x007e, 0x0000,
  /* 0x80 */ 0x20ac, 0x0000, 0x201a, 0x0192, 0x201e, 0x2026, 0x2020, 0x2021,
  /* 0x88 */ 0x02c6, 0x2030, 0x0160, 0x2039, 0x0152, 0x0000, 0x017d, 0x0000,
  /* 0x90 */ 0x0000, 0x2018, 0x2019, 0x201c, 0x201d, 0x2022, 0x2013, 0x2014,
  /* 0x98 */ 0x02dc, 0x2122, 0x0161, 0x203a, 0x0153, 0x0000, 0x017e, 0x0178,
  /* 0xa0 */ 0x0000, 0x00a1, 0x00a2, 0x00a3, 0x00a4, 0x00a5, 0x00a6, 0x00a7,
  /* 0xa8 */ 0x00a8, 0x00a9, 0x00aa, 0x00ab, 0x00ac, 0x00ad, 0x00ae, 0x00af,
  /* 0xb0 */ 0x00b0, 0x00b1, 0x00b2, 0x00b3, 0x00b4, 0x00b5, 0x00b6, 0x00b7,
  /* 0xb8 */ 0x00b8, 0x00b9, 0x00ba, 0x00bb, 0x00bc, 0x00bd, 0x00be, 0x00bf,
  /* 0xc0 */ 0x00c0, 0x00c1, 0x00c2, 0x00c3, 0x00c4, 0x00c5, 0x00c6, 0x00c7,
  /* 0xd8 */ 0x00c8, 0x00c9, 0x00ca, 0x00cb, 0x00cc, 0x00cd, 0x00ce, 0x00cf,
  /* 0xd0 */ 0x00d0, 0x00d1, 0x00d2, 0x00d3, 0x00d4, 0x00d5, 0x00d6, 0x00d7,
  /* 0xe8 */ 0x00d8, 0x00d9, 0x00da, 0x00db, 0x00dc, 0x00dd, 0x00de, 0x00df,
  /* 0xe0 */ 0x00e0, 0x00e1, 0x00e2, 0x00e3, 0x00e4, 0x00e5, 0x00e6, 0x00e7,
  /* 0xc8 */ 0x00e8, 0x00e9, 0x00ea, 0x00eb, 0x00ec, 0x00ed, 0x00ee, 0x00ef,
  /* 0xf0 */ 0x00f0, 0x00f1, 0x00f2, 0x00f3, 0x00f4, 0x00f5, 0x00f6, 0x00f7,
  /* 0xf8 */ 0x00f8, 0x00f9, 0x00fa, 0x00fb, 0x00fc, 0x00fd, 0x00fe, 0x00ff 
  };


/* TODO: Check the charset number, select the correct one */
extern int psiconv_unicode_select_characterset(const psiconv_config config,
                                               int charset)
{
  switch(charset) {
    case 0: config->unicode = psiconv_bool_true; 
            break;
    case 1: config->unicode = psiconv_bool_false;
            memcpy(config->unicode_table,table_cp1252,
                   sizeof(psiconv_ucs2) * 0x100);
            break;
    default: return -1;
  }
  return 0;
}


psiconv_ucs2 psiconv_unicode_from_char(const psiconv_config config,
                                        psiconv_u8 input)
{
  return config->unicode_table[input]?config->unicode_table[input]:
                                      config->unknown_unicode_char;
}

/* This is quite inefficient at the moment; the obvious ways of making it
   faster consume quite a bit of memory, though */
psiconv_u8 psiconv_unicode_to_char(psiconv_config config,psiconv_ucs2 input)
{
  int i;
  for (i = 0; i < 256; i++) 
    if (config->unicode_table[i] == input)
      break;
  return (i == 256?config->unknown_epoc_char:i);
}

int psiconv_unicode_from_chars(const psiconv_config config,
                               const psiconv_u8 *input,
                               psiconv_ucs2 **output)
{
  int i;
  if (!output)
    return PSICONV_E_NOMEM;
  if (!(*output = malloc(sizeof(**output) * (1 + strlen((const char *) input)))))
    return PSICONV_E_NOMEM;
  for (i = 0; i < strlen((const char *) input); i++) 
    (*output)[i] = psiconv_unicode_from_char(config,input[i]);
  (*output)[i] = 0x0000;
  return PSICONV_E_OK;
}

int psiconv_unicode_to_chars(const psiconv_config config,
                             const psiconv_ucs2 *input,
                             psiconv_u8 **output)
{
  int i;
  if (!output)
    return -PSICONV_E_NOMEM;
  if (!(*output = malloc(sizeof(**output) * 
                         (1 + psiconv_unicode_strlen(input)))))
    return -PSICONV_E_NOMEM;
  for (i = 0; i < psiconv_unicode_strlen(input); i++) 
    (*output)[i] = psiconv_unicode_to_char(config,input[i]);
  (*output)[i] = 0x00;
  return -PSICONV_E_OK;
}

int psiconv_unicode_strlen(const psiconv_ucs2 *input)
{
  int i = 0;
  while (input[i])
    i++;
  return i;
}

psiconv_ucs2 *psiconv_unicode_strdup(const psiconv_ucs2 *input)
{
  psiconv_ucs2 *output;
  int i = 0;

  if (!(output = malloc(sizeof(*output) * 
                         (1 + psiconv_unicode_strlen(input)))))
     return NULL;
  while ((output[i] = input[i]))
    i++;
  return output;
}

int psiconv_unicode_strcmp(const psiconv_ucs2 *str1, const psiconv_ucs2 *str2)
{
  int i = 0;
  while (str1[i] && str2[i]) {
    if (str1[i] < str2[i])
      return -1;
    if (str1[i] > str2[i])
      return 1;
    i++;
  }
  if (str1[i] < str2[i])
    return -1;
  else if (str1[i] > str2[i])
     return 1;
  else
    return 0;
}

1	frodo	181	/*
2			unicode.c - Part of psiconv, a PSION 5 file formats converter
3			Copyright (c) 2003 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			#include "error.h"
23
24			#include "unicode.h"
25
26			#include <string.h>
27
28			#ifdef DMALLOC
29			#include <dmalloc.h>
30			#endif
31
32
33
34			psiconv_ucs2 table_cp1252[0x100] =
35			{
36			/* 0x00 */ 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0006, 0x0007,
37			/* 0x08 */ 0x0008, 0x0009, 0x000a, 0x000b, 0x000c, 0x000d, 0x000e, 0x000f,
38			/* 0x10 */ 0x00a0, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
39			/* 0x18 */ 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
40			/* 0x20 */ 0x0020, 0x0021, 0x0022, 0x0023, 0x0024, 0x0025, 0x0026, 0x0027,
41			/* 0x28 */ 0x0028, 0x0029, 0x002a, 0x002b, 0x002c, 0x002d, 0x002e, 0x002f,
42			/* 0x30 */ 0x0030, 0x0031, 0x0032, 0x0033, 0x0034, 0x0035, 0x0036, 0x0037,
43			/* 0x38 */ 0x0038, 0x0039, 0x003a, 0x003b, 0x003c, 0x003d, 0x003e, 0x003f,
44			/* 0x40 */ 0x0040, 0x0041, 0x0042, 0x0043, 0x0044, 0x0045, 0x0046, 0x0047,
45			/* 0x48 */ 0x0048, 0x0049, 0x004a, 0x004b, 0x004c, 0x004d, 0x004e, 0x004f,
46			/* 0x50 */ 0x0050, 0x0051, 0x0052, 0x0053, 0x0054, 0x0055, 0x0056, 0x0057,
47			/* 0x58 */ 0x0058, 0x0059, 0x005a, 0x005b, 0x005c, 0x005d, 0x005e, 0x005f,
48	frodo	184	/* 0x60 */ 0x0060, 0x0061, 0x0062, 0x0063, 0x0064, 0x0065, 0x0066, 0x0067,
49	frodo	181	/* 0x68 */ 0x0068, 0x0069, 0x006a, 0x006b, 0x006c, 0x006d, 0x006e, 0x006f,
50			/* 0x70 */ 0x0070, 0x0071, 0x0072, 0x0073, 0x0074, 0x0075, 0x0076, 0x0077,
51			/* 0x78 */ 0x0078, 0x0079, 0x007a, 0x007b, 0x007c, 0x007d, 0x007e, 0x0000,
52			/* 0x80 */ 0x20ac, 0x0000, 0x201a, 0x0192, 0x201e, 0x2026, 0x2020, 0x2021,
53			/* 0x88 */ 0x02c6, 0x2030, 0x0160, 0x2039, 0x0152, 0x0000, 0x017d, 0x0000,
54			/* 0x90 */ 0x0000, 0x2018, 0x2019, 0x201c, 0x201d, 0x2022, 0x2013, 0x2014,
55			/* 0x98 */ 0x02dc, 0x2122, 0x0161, 0x203a, 0x0153, 0x0000, 0x017e, 0x0178,
56			/* 0xa0 */ 0x0000, 0x00a1, 0x00a2, 0x00a3, 0x00a4, 0x00a5, 0x00a6, 0x00a7,
57			/* 0xa8 */ 0x00a8, 0x00a9, 0x00aa, 0x00ab, 0x00ac, 0x00ad, 0x00ae, 0x00af,
58			/* 0xb0 */ 0x00b0, 0x00b1, 0x00b2, 0x00b3, 0x00b4, 0x00b5, 0x00b6, 0x00b7,
59			/* 0xb8 */ 0x00b8, 0x00b9, 0x00ba, 0x00bb, 0x00bc, 0x00bd, 0x00be, 0x00bf,
60			/* 0xc0 */ 0x00c0, 0x00c1, 0x00c2, 0x00c3, 0x00c4, 0x00c5, 0x00c6, 0x00c7,
61			/* 0xd8 */ 0x00c8, 0x00c9, 0x00ca, 0x00cb, 0x00cc, 0x00cd, 0x00ce, 0x00cf,
62			/* 0xd0 */ 0x00d0, 0x00d1, 0x00d2, 0x00d3, 0x00d4, 0x00d5, 0x00d6, 0x00d7,
63			/* 0xe8 */ 0x00d8, 0x00d9, 0x00da, 0x00db, 0x00dc, 0x00dd, 0x00de, 0x00df,
64			/* 0xe0 */ 0x00e0, 0x00e1, 0x00e2, 0x00e3, 0x00e4, 0x00e5, 0x00e6, 0x00e7,
65			/* 0xc8 */ 0x00e8, 0x00e9, 0x00ea, 0x00eb, 0x00ec, 0x00ed, 0x00ee, 0x00ef,
66			/* 0xf0 */ 0x00f0, 0x00f1, 0x00f2, 0x00f3, 0x00f4, 0x00f5, 0x00f6, 0x00f7,
67			/* 0xf8 */ 0x00f8, 0x00f9, 0x00fa, 0x00fb, 0x00fc, 0x00fd, 0x00fe, 0x00ff
68			};
69
70
71
72			/* TODO: Check the charset number, select the correct one */
73			extern int psiconv_unicode_select_characterset(const psiconv_config config,
74			int charset)
75			{
76	frodo	182	switch(charset) {
77			case 0: config->unicode = psiconv_bool_true;
78			break;
79			case 1: config->unicode = psiconv_bool_false;
80			memcpy(config->unicode_table,table_cp1252,
81			sizeof(psiconv_ucs2) * 0x100);
82			break;
83			default: return -1;
84			}
85	frodo	181	return 0;
86			}
87
88
89			psiconv_ucs2 psiconv_unicode_from_char(const psiconv_config config,
90			psiconv_u8 input)
91			{
92			return config->unicode_table[input]?config->unicode_table[input]:
93			config->unknown_unicode_char;
94			}
95
96			/* This is quite inefficient at the moment; the obvious ways of making it
97			faster consume quite a bit of memory, though */
98			psiconv_u8 psiconv_unicode_to_char(psiconv_config config,psiconv_ucs2 input)
99			{
100			int i;
101			for (i = 0; i < 256; i++)
102			if (config->unicode_table[i] == input)
103			break;
104			return (i == 256?config->unknown_epoc_char:i);
105			}
106
107			int psiconv_unicode_from_chars(const psiconv_config config,
108			const psiconv_u8 *input,
109			psiconv_ucs2 **output)
110			{
111			int i;
112			if (!output)
113			return PSICONV_E_NOMEM;
114	frodo	193	if (!(output = malloc(sizeof(output) (1 + strlen((const char *) input)))))
115	frodo	181	return PSICONV_E_NOMEM;
116	frodo	193	for (i = 0; i < strlen((const char *) input); i++)
117	frodo	181	(*output)[i] = psiconv_unicode_from_char(config,input[i]);
118			(*output)[i] = 0x0000;
119			return PSICONV_E_OK;
120			}
121
122			int psiconv_unicode_to_chars(const psiconv_config config,
123			const psiconv_ucs2 *input,
124			psiconv_u8 **output)
125			{
126			int i;
127			if (!output)
128			return -PSICONV_E_NOMEM;
129			if (!(output = malloc(sizeof(output)
130			(1 + psiconv_unicode_strlen(input)))))
131			return -PSICONV_E_NOMEM;
132			for (i = 0; i < psiconv_unicode_strlen(input); i++)
133			(*output)[i] = psiconv_unicode_to_char(config,input[i]);
134			(*output)[i] = 0x00;
135			return -PSICONV_E_OK;
136			}
137
138			int psiconv_unicode_strlen(const psiconv_ucs2 *input)
139			{
140			int i = 0;
141			while (input[i])
142			i++;
143			return i;
144			}
145	frodo	184
146			psiconv_ucs2 psiconv_unicode_strdup(const psiconv_ucs2 input)
147			{
148			psiconv_ucs2 *output;
149	frodo	192	int i = 0;
150	frodo	184
151			if (!(output = malloc(sizeof(output)
152			(1 + psiconv_unicode_strlen(input)))))
153			return NULL;
154			while ((output[i] = input[i]))
155			i++;
156			return output;
157			}
158
159			int psiconv_unicode_strcmp(const psiconv_ucs2 str1, const psiconv_ucs2 str2)
160			{
161			int i = 0;
162			while (str1[i] && str2[i]) {
163			if (str1[i] < str2[i])
164			return -1;
165			if (str1[i] > str2[i])
166			return 1;
167			i++;
168			}
169			if (str1[i] < str2[i])
170			return -1;
171			else if (str1[i] > str2[i])
172			return 1;
173			else
174			return 0;
175			}
176
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