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[wxWidgets.git] / src / expat / xmlwf / xmlfile.c
1 /* Copyright (c) 1998, 1999 Thai Open Source Software Center Ltd
2 See the file COPYING for copying permission.
3 */
4
5 #include <stdio.h>
6 #include <stdlib.h>
7 #include <stddef.h>
8 #include <string.h>
9 #include <fcntl.h>
10
11 #ifdef COMPILED_FROM_DSP
12 #include "winconfig.h"
13 #elif defined(MACOS_CLASSIC)
14 #include "macconfig.h"
15 #elif defined(__amigaos__)
16 #include "amigaconfig.h"
17 #elif defined(__WATCOMC__)
18 #include "watcomconfig.h"
19 #elif defined(HAVE_EXPAT_CONFIG_H)
20 #include <expat_config.h>
21 #endif /* ndef COMPILED_FROM_DSP */
22
23 #include "expat.h"
24 #include "xmlfile.h"
25 #include "xmltchar.h"
26 #include "filemap.h"
27
28 #if (defined(_MSC_VER) || (defined(__WATCOMC__) && !defined(__LINUX__)))
29 #include <io.h>
30 #endif
31
32 #if defined(__amigaos__) && defined(__USE_INLINE__)
33 #include <proto/expat.h>
34 #endif
35
36 #ifdef HAVE_UNISTD_H
37 #include <unistd.h>
38 #endif
39
40 #ifndef O_BINARY
41 #ifdef _O_BINARY
42 #define O_BINARY _O_BINARY
43 #else
44 #define O_BINARY 0
45 #endif
46 #endif
47
48 #ifdef _DEBUG
49 #define READ_SIZE 16
50 #else
51 #define READ_SIZE (1024*8)
52 #endif
53
54
55 typedef struct {
56 XML_Parser parser;
57 int *retPtr;
58 } PROCESS_ARGS;
59
60 static void
61 reportError(XML_Parser parser, const XML_Char *filename)
62 {
63 enum XML_Error code = XML_GetErrorCode(parser);
64 const XML_Char *message = XML_ErrorString(code);
65 if (message)
66 ftprintf(stdout, T("%s:%" XML_FMT_INT_MOD "u:%" XML_FMT_INT_MOD "u: %s\n"),
67 filename,
68 XML_GetErrorLineNumber(parser),
69 XML_GetErrorColumnNumber(parser),
70 message);
71 else
72 ftprintf(stderr, T("%s: (unknown message %d)\n"), filename, code);
73 }
74
75 /* This implementation will give problems on files larger than INT_MAX. */
76 static void
77 processFile(const void *data, size_t size,
78 const XML_Char *filename, void *args)
79 {
80 XML_Parser parser = ((PROCESS_ARGS *)args)->parser;
81 int *retPtr = ((PROCESS_ARGS *)args)->retPtr;
82 if (XML_Parse(parser, (const char *)data, (int)size, 1) == XML_STATUS_ERROR) {
83 reportError(parser, filename);
84 *retPtr = 0;
85 }
86 else
87 *retPtr = 1;
88 }
89
90 #if (defined(WIN32) || defined(__WATCOMC__))
91
92 static int
93 isAsciiLetter(XML_Char c)
94 {
95 return (T('a') <= c && c <= T('z')) || (T('A') <= c && c <= T('Z'));
96 }
97
98 #endif /* WIN32 */
99
100 static const XML_Char *
101 resolveSystemId(const XML_Char *base, const XML_Char *systemId,
102 XML_Char **toFree)
103 {
104 XML_Char *s;
105 *toFree = 0;
106 if (!base
107 || *systemId == T('/')
108 #if (defined(WIN32) || defined(__WATCOMC__))
109 || *systemId == T('\\')
110 || (isAsciiLetter(systemId[0]) && systemId[1] == T(':'))
111 #endif
112 )
113 return systemId;
114 *toFree = (XML_Char *)malloc((tcslen(base) + tcslen(systemId) + 2)
115 * sizeof(XML_Char));
116 if (!*toFree)
117 return systemId;
118 tcscpy(*toFree, base);
119 s = *toFree;
120 if (tcsrchr(s, T('/')))
121 s = tcsrchr(s, T('/')) + 1;
122 #if (defined(WIN32) || defined(__WATCOMC__))
123 if (tcsrchr(s, T('\\')))
124 s = tcsrchr(s, T('\\')) + 1;
125 #endif
126 tcscpy(s, systemId);
127 return *toFree;
128 }
129
130 static int
131 externalEntityRefFilemap(XML_Parser parser,
132 const XML_Char *context,
133 const XML_Char *base,
134 const XML_Char *systemId,
135 const XML_Char *publicId)
136 {
137 int result;
138 XML_Char *s;
139 const XML_Char *filename;
140 XML_Parser entParser = XML_ExternalEntityParserCreate(parser, context, 0);
141 PROCESS_ARGS args;
142 args.retPtr = &result;
143 args.parser = entParser;
144 filename = resolveSystemId(base, systemId, &s);
145 XML_SetBase(entParser, filename);
146 if (!filemap(filename, processFile, &args))
147 result = 0;
148 free(s);
149 XML_ParserFree(entParser);
150 return result;
151 }
152
153 static int
154 processStream(const XML_Char *filename, XML_Parser parser)
155 {
156 /* passing NULL for filename means read intput from stdin */
157 int fd = 0; /* 0 is the fileno for stdin */
158
159 if (filename != NULL) {
160 fd = topen(filename, O_BINARY|O_RDONLY);
161 if (fd < 0) {
162 tperror(filename);
163 return 0;
164 }
165 }
166 for (;;) {
167 int nread;
168 char *buf = (char *)XML_GetBuffer(parser, READ_SIZE);
169 if (!buf) {
170 if (filename != NULL)
171 close(fd);
172 ftprintf(stderr, T("%s: out of memory\n"),
173 filename != NULL ? filename : "xmlwf");
174 return 0;
175 }
176 nread = read(fd, buf, READ_SIZE);
177 if (nread < 0) {
178 tperror(filename != NULL ? filename : "STDIN");
179 if (filename != NULL)
180 close(fd);
181 return 0;
182 }
183 if (XML_ParseBuffer(parser, nread, nread == 0) == XML_STATUS_ERROR) {
184 reportError(parser, filename != NULL ? filename : "STDIN");
185 if (filename != NULL)
186 close(fd);
187 return 0;
188 }
189 if (nread == 0) {
190 if (filename != NULL)
191 close(fd);
192 break;;
193 }
194 }
195 return 1;
196 }
197
198 static int
199 externalEntityRefStream(XML_Parser parser,
200 const XML_Char *context,
201 const XML_Char *base,
202 const XML_Char *systemId,
203 const XML_Char *publicId)
204 {
205 XML_Char *s;
206 const XML_Char *filename;
207 int ret;
208 XML_Parser entParser = XML_ExternalEntityParserCreate(parser, context, 0);
209 filename = resolveSystemId(base, systemId, &s);
210 XML_SetBase(entParser, filename);
211 ret = processStream(filename, entParser);
212 free(s);
213 XML_ParserFree(entParser);
214 return ret;
215 }
216
217 int
218 XML_ProcessFile(XML_Parser parser,
219 const XML_Char *filename,
220 unsigned flags)
221 {
222 int result;
223
224 if (!XML_SetBase(parser, filename)) {
225 ftprintf(stderr, T("%s: out of memory"), filename);
226 exit(1);
227 }
228
229 if (flags & XML_EXTERNAL_ENTITIES)
230 XML_SetExternalEntityRefHandler(parser,
231 (flags & XML_MAP_FILE)
232 ? externalEntityRefFilemap
233 : externalEntityRefStream);
234 if (flags & XML_MAP_FILE) {
235 PROCESS_ARGS args;
236 args.retPtr = &result;
237 args.parser = parser;
238 if (!filemap(filename, processFile, &args))
239 result = 0;
240 }
241 else
242 result = processStream(filename, parser);
243 return result;
244 }