1 /* 2 __ __ _ 3 ___\ \/ /_ __ __ _| |_ 4 / _ \\ /| '_ \ / _` | __| 5 | __// \| |_) | (_| | |_ 6 \___/_/\_\ .__/ \__,_|\__| 7 |_| XML parser 8 9 Copyright (c) 1997-2000 Thai Open Source Software Center Ltd 10 Copyright (c) 2000-2017 Expat development team 11 Licensed under the MIT license: 12 13 Permission is hereby granted, free of charge, to any person obtaining 14 a copy of this software and associated documentation files (the 15 "Software"), to deal in the Software without restriction, including 16 without limitation the rights to use, copy, modify, merge, publish, 17 distribute, sublicense, and/or sell copies of the Software, and to permit 18 persons to whom the Software is furnished to do so, subject to the 19 following conditions: 20 21 The above copyright notice and this permission notice shall be included 22 in all copies or substantial portions of the Software. 23 24 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 25 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 26 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN 27 NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 28 DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR 29 OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE 30 USE OR OTHER DEALINGS IN THE SOFTWARE. 31 */ 32 33 #include <sys/types.h> 34 #include <sys/stat.h> 35 #include <fcntl.h> 36 #include <stdlib.h> 37 #include <stdio.h> 38 39 /* Functions close(2) and read(2) */ 40 #if !defined(_WIN32) && !defined(_WIN64) 41 # include <unistd.h> 42 #endif 43 44 /* Function "read": */ 45 #if defined(_MSC_VER) 46 /* https://msdn.microsoft.com/en-us/library/wyssk1bs(v=vs.100).aspx */ 47 # define _EXPAT_read _read 48 # define _EXPAT_read_count_t int 49 #else /* POSIX */ 50 /* http://pubs.opengroup.org/onlinepubs/009695399/functions/read.html */ 51 # define _EXPAT_read read 52 # define _EXPAT_read_count_t ssize_t 53 #endif 54 55 #ifndef S_ISREG 56 # ifndef S_IFREG 57 # define S_IFREG _S_IFREG 58 # endif 59 # ifndef S_IFMT 60 # define S_IFMT _S_IFMT 61 # endif 62 # define S_ISREG(m) (((m) & S_IFMT) == S_IFREG) 63 #endif /* not S_ISREG */ 64 65 #ifndef O_BINARY 66 # ifdef _O_BINARY 67 # define O_BINARY _O_BINARY 68 # else 69 # define O_BINARY 0 70 # endif 71 #endif 72 73 #include "xmltchar.h" 74 #include "filemap.h" 75 76 int 77 filemap(const tchar *name, 78 void (*processor)(const void *, size_t, const tchar *, void *arg), 79 void *arg) 80 { 81 size_t nbytes; 82 int fd; 83 _EXPAT_read_count_t n; 84 struct stat sb; 85 void *p; 86 87 fd = topen(name, O_RDONLY|O_BINARY); 88 if (fd < 0) { 89 tperror(name); 90 return 0; 91 } 92 if (fstat(fd, &sb) < 0) { 93 tperror(name); 94 close(fd); 95 return 0; 96 } 97 if (!S_ISREG(sb.st_mode)) { 98 ftprintf(stderr, T("%s: not a regular file\n"), name); 99 close(fd); 100 return 0; 101 } 102 if (sb.st_size > XML_MAX_CHUNK_LEN) { 103 close(fd); 104 return 2; /* Cannot be passed to XML_Parse in one go */ 105 } 106 107 nbytes = sb.st_size; 108 /* malloc will return NULL with nbytes == 0, handle files with size 0 */ 109 if (nbytes == 0) { 110 static const char c = '\0'; 111 processor(&c, 0, name, arg); 112 close(fd); 113 return 1; 114 } 115 p = malloc(nbytes); 116 if (!p) { 117 ftprintf(stderr, T("%s: out of memory\n"), name); 118 close(fd); 119 return 0; 120 } 121 n = _EXPAT_read(fd, p, nbytes); 122 if (n < 0) { 123 tperror(name); 124 free(p); 125 close(fd); 126 return 0; 127 } 128 if (n != (_EXPAT_read_count_t)nbytes) { 129 ftprintf(stderr, T("%s: read unexpected number of bytes\n"), name); 130 free(p); 131 close(fd); 132 return 0; 133 } 134 processor(p, nbytes, name, arg); 135 free(p); 136 close(fd); 137 return 1; 138 } 139
