1 // Copyright (C) 2016 and later: Unicode, Inc. and others.
2 // License & terms of use: http://www.unicode.org/copyright.html
3 /*
4 *******************************************************************************
5 *
6 * Copyright (C) 1999-2010, International Business Machines
7 * Corporation and others. All Rights Reserved.
8 *
9 *******************************************************************************
10 * file name: unewdata.c
11 * encoding: US-ASCII
12 * tab size: 8 (not used)
13 * indentation:4
14 *
15 * created on: 1999oct25
16 * created by: Markus W. Scherer
17 */
18
19 #include <stdio.h>
20 #include "unicode/utypes.h"
21 #include "unicode/putil.h"
22 #include "unicode/ustring.h"
23 #include "cmemory.h"
24 #include "cstring.h"
25 #include "filestrm.h"
26 #include "unicode/udata.h"
27 #include "unewdata.h"
28
29 struct UNewDataMemory {
30 FileStream *file;
31 uint16_t headerSize;
32 uint8_t magic1, magic2;
33 };
34
35 U_CAPI UNewDataMemory * U_EXPORT2
udata_create(const char * dir,const char * type,const char * name,const UDataInfo * pInfo,const char * comment,UErrorCode * pErrorCode)36 udata_create(const char *dir, const char *type, const char *name,
37 const UDataInfo *pInfo,
38 const char *comment,
39 UErrorCode *pErrorCode) {
40 UNewDataMemory *pData;
41 uint16_t headerSize, commentLength;
42 char filename[512];
43 uint8_t bytes[16];
44 int32_t length;
45
46 if(pErrorCode==NULL || U_FAILURE(*pErrorCode)) {
47 return NULL;
48 } else if(name==NULL || *name==0 || pInfo==NULL) {
49 *pErrorCode=U_ILLEGAL_ARGUMENT_ERROR;
50 return NULL;
51 }
52
53 /* allocate the data structure */
54 pData=(UNewDataMemory *)uprv_malloc(sizeof(UNewDataMemory));
55 if(pData==NULL) {
56 *pErrorCode=U_MEMORY_ALLOCATION_ERROR;
57 return NULL;
58 }
59
60 /* Check that the full path won't be too long */
61 length = 0; /* Start with nothing */
62 if(dir != NULL && *dir !=0) /* Add directory length if one was given */
63 {
64 length += strlen(dir);
65
66 /* Add 1 if dir doesn't end with path sep */
67 if (dir[strlen(dir) - 1]!= U_FILE_SEP_CHAR) {
68 length++;
69 }
70 }
71 length += strlen(name); /* Add the filename length */
72
73 if(type != NULL && *type !=0) { /* Add directory length if given */
74 length += strlen(type);
75 }
76
77
78 /* LDH buffer Length error check */
79 if(length > ((int32_t)sizeof(filename) - 1))
80 {
81 *pErrorCode = U_BUFFER_OVERFLOW_ERROR;
82 uprv_free(pData);
83 return NULL;
84 }
85
86 /* open the output file */
87 if(dir!=NULL && *dir!=0) { /* if dir has a value, we prepend it to the filename */
88 char *p=filename+strlen(dir);
89 uprv_strcpy(filename, dir);
90 if (*(p-1)!=U_FILE_SEP_CHAR) {
91 *p++=U_FILE_SEP_CHAR;
92 *p=0;
93 }
94 } else { /* otherwise, we'll output to the current dir */
95 filename[0]=0;
96 }
97 uprv_strcat(filename, name);
98 if(type!=NULL && *type!=0) {
99 uprv_strcat(filename, ".");
100 uprv_strcat(filename, type);
101 }
102 pData->file=T_FileStream_open(filename, "wb");
103 if(pData->file==NULL) {
104 uprv_free(pData);
105 *pErrorCode=U_FILE_ACCESS_ERROR;
106 return NULL;
107 }
108
109 /* write the header information */
110 headerSize=(uint16_t)(pInfo->size+4);
111 if(comment!=NULL && *comment!=0) {
112 commentLength=(uint16_t)(uprv_strlen(comment)+1);
113 headerSize+=commentLength;
114 } else {
115 commentLength=0;
116 }
117
118 /* write the size of the header, take padding into account */
119 pData->headerSize=(uint16_t)((headerSize+15)&~0xf);
120 pData->magic1=0xda;
121 pData->magic2=0x27;
122 T_FileStream_write(pData->file, &pData->headerSize, 4);
123
124 /* write the information data */
125 T_FileStream_write(pData->file, pInfo, pInfo->size);
126
127 /* write the comment */
128 if(commentLength>0) {
129 T_FileStream_write(pData->file, comment, commentLength);
130 }
131
132 /* write padding bytes to align the data section to 16 bytes */
133 headerSize&=0xf;
134 if(headerSize!=0) {
135 headerSize=(uint16_t)(16-headerSize);
136 uprv_memset(bytes, 0, headerSize);
137 T_FileStream_write(pData->file, bytes, headerSize);
138 }
139
140 return pData;
141 }
142
143 U_CAPI uint32_t U_EXPORT2
udata_finish(UNewDataMemory * pData,UErrorCode * pErrorCode)144 udata_finish(UNewDataMemory *pData, UErrorCode *pErrorCode) {
145 uint32_t fileLength=0;
146
147 if(pErrorCode==NULL || U_FAILURE(*pErrorCode)) {
148 return 0;
149 }
150
151 if(pData!=NULL) {
152 if(pData->file!=NULL) {
153 /* fflush(pData->file);*/
154 fileLength=T_FileStream_size(pData->file);
155 if(T_FileStream_error(pData->file)) {
156 *pErrorCode=U_FILE_ACCESS_ERROR;
157 } else {
158 fileLength-=pData->headerSize;
159 }
160 T_FileStream_close(pData->file);
161 }
162 uprv_free(pData);
163 }
164
165 return fileLength;
166 }
167
168 /* dummy UDataInfo cf. udata.h */
169 static const UDataInfo dummyDataInfo = {
170 sizeof(UDataInfo),
171 0,
172
173 U_IS_BIG_ENDIAN,
174 U_CHARSET_FAMILY,
175 U_SIZEOF_UCHAR,
176 0,
177
178 { 0, 0, 0, 0 }, /* dummy dataFormat */
179 { 0, 0, 0, 0 }, /* dummy formatVersion */
180 { 0, 0, 0, 0 } /* dummy dataVersion */
181 };
182
183 U_CAPI void U_EXPORT2
udata_createDummy(const char * dir,const char * type,const char * name,UErrorCode * pErrorCode)184 udata_createDummy(const char *dir, const char *type, const char *name, UErrorCode *pErrorCode) {
185 if(U_SUCCESS(*pErrorCode)) {
186 udata_finish(udata_create(dir, type, name, &dummyDataInfo, NULL, pErrorCode), pErrorCode);
187 if(U_FAILURE(*pErrorCode)) {
188 fprintf(stderr, "error %s writing dummy data file %s" U_FILE_SEP_STRING "%s.%s\n",
189 u_errorName(*pErrorCode), dir, name, type);
190 exit(*pErrorCode);
191 }
192 }
193 }
194
195 U_CAPI void U_EXPORT2
udata_write8(UNewDataMemory * pData,uint8_t byte)196 udata_write8(UNewDataMemory *pData, uint8_t byte) {
197 if(pData!=NULL && pData->file!=NULL) {
198 T_FileStream_write(pData->file, &byte, 1);
199 }
200 }
201
202 U_CAPI void U_EXPORT2
udata_write16(UNewDataMemory * pData,uint16_t word)203 udata_write16(UNewDataMemory *pData, uint16_t word) {
204 if(pData!=NULL && pData->file!=NULL) {
205 T_FileStream_write(pData->file, &word, 2);
206 }
207 }
208
209 U_CAPI void U_EXPORT2
udata_write32(UNewDataMemory * pData,uint32_t wyde)210 udata_write32(UNewDataMemory *pData, uint32_t wyde) {
211 if(pData!=NULL && pData->file!=NULL) {
212 T_FileStream_write(pData->file, &wyde, 4);
213 }
214 }
215
216 U_CAPI void U_EXPORT2
udata_writeBlock(UNewDataMemory * pData,const void * s,int32_t length)217 udata_writeBlock(UNewDataMemory *pData, const void *s, int32_t length) {
218 if(pData!=NULL && pData->file!=NULL) {
219 if(length>0) {
220 T_FileStream_write(pData->file, s, length);
221 }
222 }
223 }
224
225 U_CAPI void U_EXPORT2
udata_writePadding(UNewDataMemory * pData,int32_t length)226 udata_writePadding(UNewDataMemory *pData, int32_t length) {
227 static const uint8_t padding[16]={
228 0xaa, 0xaa, 0xaa, 0xaa,
229 0xaa, 0xaa, 0xaa, 0xaa,
230 0xaa, 0xaa, 0xaa, 0xaa,
231 0xaa, 0xaa, 0xaa, 0xaa
232 };
233 if(pData!=NULL && pData->file!=NULL) {
234 while(length>=16) {
235 T_FileStream_write(pData->file, padding, 16);
236 length-=16;
237 }
238 if(length>0) {
239 T_FileStream_write(pData->file, padding, length);
240 }
241 }
242 }
243
244 U_CAPI void U_EXPORT2
udata_writeString(UNewDataMemory * pData,const char * s,int32_t length)245 udata_writeString(UNewDataMemory *pData, const char *s, int32_t length) {
246 if(pData!=NULL && pData->file!=NULL) {
247 if(length==-1) {
248 length=(int32_t)uprv_strlen(s);
249 }
250 if(length>0) {
251 T_FileStream_write(pData->file, s, length);
252 }
253 }
254 }
255
256 U_CAPI void U_EXPORT2
udata_writeUString(UNewDataMemory * pData,const UChar * s,int32_t length)257 udata_writeUString(UNewDataMemory *pData, const UChar *s, int32_t length) {
258 if(pData!=NULL && pData->file!=NULL) {
259 if(length==-1) {
260 length=u_strlen(s);
261 }
262 if(length>0) {
263 T_FileStream_write(pData->file, s, length*sizeof(UChar));
264 }
265 }
266 }
267
268 /*
269 * Hey, Emacs, please set the following:
270 *
271 * Local Variables:
272 * indent-tabs-mode: nil
273 * End:
274 *
275 */
276
277