author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Wed, 09 Jun 2010 11:40:52 +0300 | |
branch | RCL_3 |
changeset 10 | f902e87c146f |
parent 0 | 1fb32624e06b |
permissions | -rw-r--r-- |
0
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/* ================================================================ */ |
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/* |
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File: ConvertUTF7.c |
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Author: David B. Goldsmith |
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Copyright (C) 1994, 1996 Taligent, Inc. All rights reserved. |
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This code is copyrighted. Under the copyright laws, this code may not |
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be copied, in whole or part, without prior written consent of Taligent. |
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|
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Taligent grants the right to use this code as long as this ENTIRE |
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copyright notice is reproduced in the code. The code is provided |
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AS-IS, AND TALIGENT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR |
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IMPLIED, INCLUDING, BUT NOT LIMITED TO IMPLIED WARRANTIES OF |
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MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT |
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WILL TALIGENT BE LIABLE FOR ANY DAMAGES WHATSOEVER (INCLUDING, |
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WITHOUT LIMITATION, DAMAGES FOR LOSS OF BUSINESS PROFITS, BUSINESS |
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INTERRUPTION, LOSS OF BUSINESS INFORMATION, OR OTHER PECUNIARY |
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LOSS) ARISING OUT OF THE USE OR INABILITY TO USE THIS CODE, EVEN |
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IF TALIGENT HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. |
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BECAUSE SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF |
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LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES, THE ABOVE |
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LIMITATION MAY NOT APPLY TO YOU. |
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RESTRICTED RIGHTS LEGEND: Use, duplication, or disclosure by the |
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government is subject to restrictions as set forth in subparagraph |
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(c)(l)(ii) of the Rights in Technical Data and Computer Software |
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clause at DFARS 252.227-7013 and FAR 52.227-19. |
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This code may be protected by one or more U.S. and International |
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Patents. |
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TRADEMARKS: Taligent and the Taligent Design Mark are registered |
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trademarks of Taligent, Inc. |
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*/ |
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// #include "CVTUTF7.H" // commented out by DPB |
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#include "UTF7.H" // added by DPB |
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#pragma warning (disable: 4706) // added by DPB (warning disabled: "assignment within conditional expression") |
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static const char base64[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"; // "const" added by DPB |
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// static short invbase64[128]; // commented out by DPB |
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static const char direct[] = // "const" added by DPB |
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"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789'(),-./:?"; |
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static const char optional[] = "!\"#$%&*;<=>@[]^_`{|}"; // "const" added by DPB |
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static const char spaces[] = " \011\015\012"; /* space, tab, return, line feed */ // "const" added by DPB |
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// static char mustshiftsafe[128]; // commented out by DPB |
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// static char mustshiftopt[128]; // commented out by DPB |
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// static int needtables = 1; // commented out by DPB |
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#define SHIFT_IN '+' |
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#define SHIFT_OUT '-' |
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int strlen(const char* aZeroTerminatedString) // added by DPB |
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{ // added by DPB |
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const char* character=aZeroTerminatedString; // added by DPB |
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while (*character!='\0') // added by DPB |
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{ // added by DPB |
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++character; // added by DPB |
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} // added by DPB |
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return character-aZeroTerminatedString; // added by DPB |
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} // added by DPB |
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static void |
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// tabinit() // commented out by DPB |
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tabinit(short invbase64[], char mustshiftsafe[], char mustshiftopt[]) // added by DPB |
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{ |
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int i, limit; |
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for (i = 0; i < 128; ++i) |
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{ |
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mustshiftopt[i] = mustshiftsafe[i] = 1; |
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invbase64[i] = -1; |
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} |
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limit = strlen(direct); |
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for (i = 0; i < limit; ++i) |
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mustshiftopt[direct[i]] = mustshiftsafe[direct[i]] = 0; |
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limit = strlen(spaces); |
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for (i = 0; i < limit; ++i) |
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mustshiftopt[spaces[i]] = mustshiftsafe[spaces[i]] = 0; |
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limit = strlen(optional); |
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for (i = 0; i < limit; ++i) |
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mustshiftopt[optional[i]] = 0; |
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limit = strlen(base64); |
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for (i = 0; i < limit; ++i) |
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invbase64[base64[i]] = (short)i; // cast added by DPB |
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// needtables = 0; // commented out by DPB |
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} |
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#define DECLARE_BIT_BUFFER register unsigned long BITbuffer = 0, buffertemp = 0; int bufferbits = 0 |
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#define BITS_IN_BUFFER bufferbits |
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#define WRITE_N_BITS(x, n) ((BITbuffer |= ( ((x) & ~(-1L<<(n))) << (32-(n)-bufferbits) ) ), bufferbits += (n) ) |
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#define READ_N_BITS(n) ((buffertemp = (BITbuffer >> (32-(n)))), (BITbuffer <<= (n)), (bufferbits -= (n)), buffertemp) |
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#define TARGETCHECK {if (target >= targetEnd) {result = targetExhausted; break;}} |
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EXPORT_C // added by DPB |
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99 |
ConversionResult ConvertUCS2toUTF7( |
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100 |
UCS2** sourceStart, UCS2* sourceEnd, |
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|
101 |
char** targetStart, char* targetEnd, |
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|
102 |
int optional, int verbose) |
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|
103 |
{ |
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|
104 |
ConversionResult result = ok; |
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|
105 |
DECLARE_BIT_BUFFER; |
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|
106 |
int shifted = 0, needshift = 0, done = 0; |
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|
107 |
register UCS2 *source = *sourceStart; |
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|
108 |
register char *target = *targetStart; |
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|
109 |
char *mustshift; |
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|
110 |
|
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|
111 |
short invbase64[128]; // added by DPB |
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|
112 |
char mustshiftsafe[128]; // added by DPB |
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|
113 |
char mustshiftopt[128]; // added by DPB |
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|
114 |
// if (needtables) // commented out by DPB |
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|
115 |
// tabinit(); // commented out by DPB |
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116 |
tabinit(invbase64, mustshiftsafe, mustshiftopt); // added by DPB |
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|
117 |
|
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118 |
if (optional) |
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119 |
mustshift = mustshiftopt; |
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120 |
else |
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121 |
mustshift = mustshiftsafe; |
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122 |
|
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123 |
do |
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124 |
{ |
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125 |
register UCS2 r=0; // initialised to 0 by DPB (to avoid GCC warning) |
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126 |
|
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127 |
done = source >= sourceEnd; |
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|
128 |
if (!done) |
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129 |
r = *source++; |
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130 |
needshift = (!done && ((r > 0x7f) || mustshift[r])); |
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131 |
|
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132 |
if (needshift && !shifted) |
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133 |
{ |
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|
134 |
TARGETCHECK; |
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|
135 |
*target++ = SHIFT_IN; |
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|
136 |
/* Special case handling of the SHIFT_IN character */ |
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|
137 |
if (r == (UCS2)SHIFT_IN) { |
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|
138 |
TARGETCHECK; |
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|
139 |
*target++ = SHIFT_OUT; |
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|
140 |
} |
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|
141 |
else |
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|
142 |
shifted = 1; |
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|
143 |
} |
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|
144 |
|
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|
145 |
if (shifted) |
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|
146 |
{ |
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|
147 |
/* Either write the character to the bit buffer, or pad |
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148 |
the bit buffer out to a full base64 character. |
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|
149 |
*/ |
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|
150 |
if (needshift) |
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|
151 |
WRITE_N_BITS(r, 16); |
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|
152 |
else |
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|
153 |
WRITE_N_BITS(0, (6 - (BITS_IN_BUFFER % 6))%6); |
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|
154 |
|
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|
155 |
/* Flush out as many full base64 characters as possible |
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|
156 |
from the bit buffer. |
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|
157 |
*/ |
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|
158 |
while ((target < targetEnd) && BITS_IN_BUFFER >= 6) |
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|
159 |
{ |
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|
160 |
int temp=READ_N_BITS(6); // added by DPB |
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Revision: 201003
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|
161 |
// *target++ = base64[READ_N_BITS(6)]; // commented out by DPB |
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|
162 |
*target++ = base64[temp]; // added by DPB |
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|
163 |
} |
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diff
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|
164 |
|
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|
165 |
if (BITS_IN_BUFFER >= 6) |
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|
166 |
TARGETCHECK; |
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diff
changeset
|
167 |
|
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Revision: 201003
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diff
changeset
|
168 |
if (!needshift) |
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diff
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|
169 |
{ |
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|
170 |
/* Write the explicit shift out character if |
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|
171 |
1) The caller has requested we always do it, or |
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|
172 |
2) The directly encoded character is in the |
1fb32624e06b
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|
173 |
base64 set, or |
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diff
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|
174 |
3) The directly encoded character is SHIFT_OUT. |
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|
175 |
*/ |
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|
176 |
if (verbose || ((!done) && (invbase64[r] >=0 || r == SHIFT_OUT))) |
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diff
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|
177 |
{ |
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|
178 |
TARGETCHECK; |
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|
179 |
*target++ = SHIFT_OUT; |
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|
180 |
} |
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|
181 |
shifted = 0; |
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|
182 |
} |
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|
183 |
} |
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diff
changeset
|
184 |
|
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|
185 |
/* The character can be directly encoded as ASCII. */ |
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|
186 |
if (!needshift && !done) |
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|
187 |
{ |
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Revision: 201003
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|
188 |
TARGETCHECK; |
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|
189 |
*target++ = (char) r; |
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|
190 |
} |
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diff
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|
191 |
|
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Revision: 201003
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|
192 |
} |
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Revision: 201003
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|
193 |
while (!done); |
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Revision: 201003
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diff
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|
194 |
|
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|
195 |
*sourceStart = source; |
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Revision: 201003
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|
196 |
*targetStart = target; |
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|
197 |
return result; |
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|
198 |
} |
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diff
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|
199 |
|
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Revision: 201003
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|
200 |
EXPORT_C // added by DPB |
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Revision: 201003
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diff
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|
201 |
ConversionResult ConvertUTF7toUCS2( |
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diff
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|
202 |
char** sourceStart, char* sourceEnd, |
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diff
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|
203 |
UCS2** targetStart, UCS2* targetEnd) |
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diff
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|
204 |
{ |
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Revision: 201003
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diff
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|
205 |
ConversionResult result = ok; |
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Revision: 201003
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parents:
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DECLARE_BIT_BUFFER; |
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int shifted = 0, first = 0, wroteone = 0, base64EOF=0, base64value=0, done=0; // "base64EOF", "base64value" and "done" initialised to 0 by DPB (to avoid GCC warning) |
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unsigned int c=0, prevc; // "c" initialised to 0 by DPB (to avoid GCC warning) |
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unsigned long junk; |
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register char *source = *sourceStart; |
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register UCS2 *target = *targetStart; |
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212 |
|
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short invbase64[128]; // added by DPB |
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char mustshiftsafe[128]; // added by DPB |
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char mustshiftopt[128]; // added by DPB |
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// if (needtables) // commented out by DPB |
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// tabinit(); // commented out by DPB |
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tabinit(invbase64, mustshiftsafe, mustshiftopt); // added by DPB |
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219 |
|
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220 |
do |
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221 |
{ |
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222 |
/* read an ASCII character c */ |
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done = source >= sourceEnd; |
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if (!done) |
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c = *source++; |
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if (shifted) |
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227 |
{ |
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228 |
/* We're done with a base64 string if we hit EOF, it's not a valid |
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229 |
ASCII character, or it's not in the base64 set. |
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230 |
*/ |
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231 |
base64EOF = done || (c > 0x7f) || (base64value = invbase64[c]) < 0; |
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232 |
if (base64EOF) |
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233 |
{ |
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shifted = 0; |
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/* If the character causing us to drop out was SHIFT_IN or |
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236 |
SHIFT_OUT, it may be a special escape for SHIFT_IN. The |
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237 |
test for SHIFT_IN is not necessary, but allows an alternate |
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238 |
form of UTF-7 where SHIFT_IN is escaped by SHIFT_IN. This |
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239 |
only works for some values of SHIFT_IN. |
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240 |
*/ |
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241 |
if (!done && (c == SHIFT_IN || c == SHIFT_OUT)) |
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242 |
{ |
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243 |
/* get another character c */ |
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prevc = c; |
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done = source >= sourceEnd; |
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246 |
if (!done) |
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c = *source++; |
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248 |
/* If no base64 characters were encountered, and the |
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249 |
character terminating the shift sequence was |
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250 |
SHIFT_OUT, then it's a special escape for SHIFT_IN. |
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251 |
*/ |
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252 |
if (first && prevc == SHIFT_OUT) |
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253 |
{ |
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254 |
/* write SHIFT_IN unicode */ |
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255 |
TARGETCHECK; |
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256 |
*target++ = (UCS2)SHIFT_IN; |
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257 |
} |
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258 |
else if (!wroteone) |
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259 |
{ |
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result = sourceCorrupt; |
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261 |
/* fprintf(stderr, "UTF7: empty sequence near byte %ld in input\n", source-sourceStart) */; |
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262 |
} |
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263 |
} |
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264 |
else if (!wroteone) |
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265 |
{ |
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266 |
result = sourceCorrupt; |
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267 |
/* fprintf(stderr, "UTF7: empty sequence near byte %ld in input\n", source-sourceStart) */; |
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268 |
} |
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269 |
} |
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270 |
else |
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271 |
{ |
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272 |
/* Add another 6 bits of base64 to the bit buffer. */ |
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273 |
WRITE_N_BITS(base64value, 6); |
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274 |
first = 0; |
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275 |
} |
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276 |
|
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277 |
/* Extract as many full 16 bit characters as possible from the |
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278 |
bit buffer. |
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279 |
*/ |
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280 |
while (BITS_IN_BUFFER >= 16 && (target < targetEnd)) |
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281 |
{ |
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282 |
/* write a unicode */ |
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283 |
*target++ = (UCS2)READ_N_BITS(16); // cast added by DPB |
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284 |
wroteone = 1; |
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285 |
} |
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286 |
|
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287 |
if (BITS_IN_BUFFER >= 16) |
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288 |
TARGETCHECK; |
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289 |
|
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290 |
if (base64EOF) |
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291 |
{ |
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292 |
junk = READ_N_BITS(BITS_IN_BUFFER); |
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293 |
if (junk) |
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294 |
{ |
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295 |
result = sourceCorrupt; |
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296 |
/* fprintf(stderr, "UTF7: non-zero pad bits near byte %ld in input\n", source-sourceStart) */; |
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297 |
} |
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298 |
} |
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299 |
} |
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300 |
|
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301 |
if (!shifted && !done) |
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302 |
{ |
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303 |
if (c == SHIFT_IN) |
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304 |
{ |
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305 |
shifted = 1; |
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first = 1; |
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307 |
wroteone = 0; |
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308 |
} |
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309 |
else |
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310 |
{ |
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311 |
/* It must be a directly encoded character. */ |
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Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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312 |
if (c > 0x7f) |
1fb32624e06b
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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313 |
{ |
1fb32624e06b
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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314 |
result = sourceCorrupt; |
1fb32624e06b
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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315 |
/* fprintf(stderr, "UTF7: non-ASCII character near byte %ld in input\n", source-sourceStart) */; |
1fb32624e06b
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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316 |
} |
1fb32624e06b
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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317 |
/* write a unicode */ |
1fb32624e06b
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
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318 |
TARGETCHECK; |
1fb32624e06b
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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*target++ = (UCS2)c; // cast added by DPB |
1fb32624e06b
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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320 |
} |
1fb32624e06b
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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321 |
} |
1fb32624e06b
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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322 |
} |
1fb32624e06b
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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323 |
while (!done); |
1fb32624e06b
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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324 |
|
1fb32624e06b
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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325 |
*sourceStart = source; |
1fb32624e06b
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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326 |
*targetStart = target; |
1fb32624e06b
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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327 |
return result; |
1fb32624e06b
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
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328 |
} |