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 # include <io.h> 47 /* https://msdn.microsoft.com/en-us/library/wyssk1bs(v=vs.100).aspx */ 48 # define _EXPAT_read _read 49 # define _EXPAT_read_count_t int 50 # define _EXPAT_read_req_t unsigned int 51 #else /* POSIX */ 52 /* http://pubs.opengroup.org/onlinepubs/009695399/functions/read.html */ 53 # define _EXPAT_read read 54 # define _EXPAT_read_count_t ssize_t 55 # define _EXPAT_read_req_t size_t 56 #endif 57 58 #ifndef S_ISREG 59 # ifndef S_IFREG 60 # define S_IFREG _S_IFREG 61 # endif 62 # ifndef S_IFMT 63 # define S_IFMT _S_IFMT 64 # endif 65 # define S_ISREG(m) (((m) & S_IFMT) == S_IFREG) 66 #endif /* not S_ISREG */ 67 68 #ifndef O_BINARY 69 # ifdef _O_BINARY 70 # define O_BINARY _O_BINARY 71 # else 72 # define O_BINARY 0 73 # endif 74 #endif 75 76 #include "xmltchar.h" 77 #include "filemap.h" 78 79 int 80 filemap(const tchar *name, 81 void (*processor)(const void *, size_t, const tchar *, void *arg), 82 void *arg) 83 { 84 size_t nbytes; 85 int fd; 86 _EXPAT_read_count_t n; 87 struct stat sb; 88 void *p; 89 90 fd = topen(name, O_RDONLY|O_BINARY); 91 if (fd < 0) { 92 tperror(name); 93 return 0; 94 } 95 if (fstat(fd, &sb) < 0) { 96 tperror(name); 97 close(fd); 98 return 0; 99 } 100 if (!S_ISREG(sb.st_mode)) { 101 ftprintf(stderr, T("%s: not a regular file\n"), name); 102 close(fd); 103 return 0; 104 } 105 if (sb.st_size > XML_MAX_CHUNK_LEN) { 106 close(fd); 107 return 2; /* Cannot be passed to XML_Parse in one go */ 108 } 109 110 nbytes = sb.st_size; 111 /* malloc will return NULL with nbytes == 0, handle files with size 0 */ 112 if (nbytes == 0) { 113 static const char c = '\0'; 114 processor(&c, 0, name, arg); 115 close(fd); 116 return 1; 117 } 118 p = malloc(nbytes); 119 if (!p) { 120 ftprintf(stderr, T("%s: out of memory\n"), name); 121 close(fd); 122 return 0; 123 } 124 n = _EXPAT_read(fd, p, (_EXPAT_read_req_t)nbytes); 125 if (n < 0) { 126 tperror(name); 127 free(p); 128 close(fd); 129 return 0; 130 } 131 if (n != (_EXPAT_read_count_t)nbytes) { 132 ftprintf(stderr, T("%s: read unexpected number of bytes\n"), name); 133 free(p); 134 close(fd); 135 return 0; 136 } 137 processor(p, nbytes, name, arg); 138 free(p); 139 close(fd); 140 return 1; 141 } 142