/[public]/psiconv/trunk/lib/psiconv/unicode.c
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Diff of /psiconv/trunk/lib/psiconv/unicode.c

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Revision 216 Revision 217
20#include "config.h" 20#include "config.h"
21#include "compat.h" 21#include "compat.h"
22#include "error.h" 22#include "error.h"
23 23
24#include "unicode.h" 24#include "unicode.h"
25#include "parse_routines.h"
26#include "generate_routines.h"
25 27
26#include <string.h> 28#include <string.h>
27 29
28#ifdef DMALLOC 30#ifdef DMALLOC
29#include <dmalloc.h> 31#include <dmalloc.h>
84 } 86 }
85 return 0; 87 return 0;
86} 88}
87 89
88 90
89psiconv_ucs2 psiconv_unicode_from_char(const psiconv_config config, 91psiconv_ucs2 psiconv_unicode_read_char(const psiconv_config config,
90 psiconv_u8 input) 92 psiconv_buffer buf,
93 int lev,psiconv_u32 off,
94 int *length,int *status)
91{ 95{
96 psiconv_u8 char1,char2,char3;
97 psiconv_ucs2 result=0;
98 int res;
99 int len=0;
100
101 char1 = psiconv_read_u8(config,buf,lev,off+len,&res);
102 if (res)
103 goto ERROR;
104 len ++;
105
106 if (config->unicode) {
107 if (char1 >= 0xf0) {
108 res = PSICONV_E_PARSE;
109 goto ERROR;
110 } else if (char1 < 0x80)
111 result = char1;
112 else {
113 char2 = psiconv_read_u8(config,buf,lev,off+len,&res);
114 len ++;
115 if ((char2 & 0xc0) != 0x80) {
116 res = PSICONV_E_PARSE;
117 goto ERROR;
118 }
119 if (char1 < 0xe0)
120 result = ((char1 & 0x1f) << 6) | (char2 & 0x3f);
121 else {
122 char3 = psiconv_read_u8(config,buf,lev,off+len,&res);
123 len ++;
124 if ((char3 & 0xc0) != 0x80) {
125 res = PSICONV_E_PARSE;
126 goto ERROR;
127 }
128 result = ((char1 & 0x0f) << 12) | ((char2 & 0x3f) << 6) |
129 (char3 & 0x3f);
130 }
131 }
132 } else
92 return config->unicode_table[input]?config->unicode_table[input]: 133 result = config->unicode_table[char1]?config->unicode_table[char1]:
93 config->unknown_unicode_char; 134 config->unknown_unicode_char;
135ERROR:
136 if (length)
137 *length = len;
138 if (status)
139 *status = res;
140 return result;
94} 141}
95 142
96/* This is quite inefficient at the moment; the obvious ways of making it 143int psiconv_unicode_write_char(const psiconv_config config,
97 faster consume quite a bit of memory, though */ 144 psiconv_buffer buf,
98psiconv_u8 psiconv_unicode_to_char(psiconv_config config,psiconv_ucs2 input) 145 int lev, psiconv_ucs2 value)
99{ 146{
147 psiconv_u8 byte;
100 int i; 148 int i;
149 int res=0;
150
151 if (config->unicode) {
152 if (value < 0x80) {
153 if ((res = psiconv_write_u8(config,buf,lev,value)))
154 goto ERROR;
155 } else if (value < 0x800) {
156 if ((res = psiconv_write_u8(config,buf,lev,0xc0 | (value >> 6))))
157 goto ERROR;
158 if ((res = psiconv_write_u8(config,buf,lev,0x80 | (value & 0x3f))))
159 goto ERROR;
160 } else {
161 if ((res = psiconv_write_u8(config,buf,lev,0xe0 | (value >> 12))))
162 goto ERROR;
163 if ((res = psiconv_write_u8(config,buf,lev,0x80 | ((value >> 6) & 0x3f))))
164 goto ERROR;
165 if ((res = psiconv_write_u8(config,buf,lev,0x80 | (value & 0x3f))))
166 goto ERROR;
167 }
168 } else {
101 for (i = 0; i < 256; i++) 169 for (i = 0; i < 256; i++)
102 if (config->unicode_table[i] == input) 170 if (config->unicode_table[i] == value)
103 break; 171 break;
104 return (i == 256?config->unknown_epoc_char:i); 172 if ((res = psiconv_write_u8(config,buf,lev,
105} 173 i == 256?config->unknown_epoc_char:i)))
106 174 goto ERROR;
107int psiconv_unicode_from_chars(const psiconv_config config, 175 }
108 const psiconv_u8 *input, 176ERROR:
109 psiconv_ucs2 **output) 177 return res;
110{
111 int i;
112 if (!output)
113 return PSICONV_E_NOMEM;
114 if (!(*output = malloc(sizeof(**output) * (1 + strlen((const char *) input)))))
115 return PSICONV_E_NOMEM;
116 for (i = 0; i < strlen((const char *) input); i++)
117 (*output)[i] = psiconv_unicode_from_char(config,input[i]);
118 (*output)[i] = 0x0000;
119 return PSICONV_E_OK;
120}
121
122int 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} 178}
137 179
138int psiconv_unicode_strlen(const psiconv_ucs2 *input) 180int psiconv_unicode_strlen(const psiconv_ucs2 *input)
139{ 181{
140 int i = 0; 182 int i = 0;
172 return 1; 214 return 1;
173 else 215 else
174 return 0; 216 return 0;
175} 217}
176 218
219
220psiconv_ucs2 *psiconv_unicode_empty_string(void)
221{
222 psiconv_ucs2 *result;
223 result = malloc(sizeof(psiconv_ucs2));
224 if (result)
225 result[0] = 0;
226 return result;
227}
228

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