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 Clark Cooper <coopercc@users.sourceforge.net> 11 Copyright (c) 2001-2004 Fred L. Drake, Jr. <fdrake@users.sourceforge.net> 12 Copyright (c) 2002-2009 Karl Waclawek <karl@waclawek.net> 13 Copyright (c) 2016-2017 Sebastian Pipping <sebastian@pipping.org> 14 Copyright (c) 2017 Rhodri James <rhodri@wildebeest.org.uk> 15 Copyright (c) 2017 Franek Korta <fkorta@gmail.com> 16 Licensed under the MIT license: 17 18 Permission is hereby granted, free of charge, to any person obtaining 19 a copy of this software and associated documentation files (the 20 "Software"), to deal in the Software without restriction, including 21 without limitation the rights to use, copy, modify, merge, publish, 22 distribute, sublicense, and/or sell copies of the Software, and to permit 23 persons to whom the Software is furnished to do so, subject to the 24 following conditions: 25 26 The above copyright notice and this permission notice shall be included 27 in all copies or substantial portions of the Software. 28 29 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 30 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 31 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN 32 NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 33 DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR 34 OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE 35 USE OR OTHER DEALINGS IN THE SOFTWARE. 36 */ 37 38 #include <sys/types.h> 39 #include <sys/stat.h> 40 #include <fcntl.h> 41 #include <stdlib.h> 42 #include <stdio.h> 43 44 /* Functions close(2) and read(2) */ 45 #if ! defined(_WIN32) && ! defined(_WIN64) 46 # include <unistd.h> 47 #endif 48 49 /* Function "read": */ 50 #if defined(_MSC_VER) 51 # include <io.h> 52 /* https://msdn.microsoft.com/en-us/library/wyssk1bs(v=vs.100).aspx */ 53 # define _EXPAT_read _read 54 # define _EXPAT_read_count_t int 55 # define _EXPAT_read_req_t unsigned int 56 #else /* POSIX */ 57 /* http://pubs.opengroup.org/onlinepubs/009695399/functions/read.html */ 58 # define _EXPAT_read read 59 # define _EXPAT_read_count_t ssize_t 60 # define _EXPAT_read_req_t size_t 61 #endif 62 63 #ifndef S_ISREG 64 # ifndef S_IFREG 65 # define S_IFREG _S_IFREG 66 # endif 67 # ifndef S_IFMT 68 # define S_IFMT _S_IFMT 69 # endif 70 # define S_ISREG(m) (((m)&S_IFMT) == S_IFREG) 71 #endif /* not S_ISREG */ 72 73 #ifndef O_BINARY 74 # ifdef _O_BINARY 75 # define O_BINARY _O_BINARY 76 # else 77 # define O_BINARY 0 78 # endif 79 #endif 80 81 #include "xmltchar.h" 82 #include "filemap.h" 83 84 int 85 filemap(const tchar *name, 86 void (*processor)(const void *, size_t, const tchar *, void *arg), 87 void *arg) { 88 size_t nbytes; 89 int fd; 90 _EXPAT_read_count_t n; 91 struct stat sb; 92 void *p; 93 94 fd = topen(name, O_RDONLY | O_BINARY); 95 if (fd < 0) { 96 tperror(name); 97 return 0; 98 } 99 if (fstat(fd, &sb) < 0) { 100 tperror(name); 101 close(fd); 102 return 0; 103 } 104 if (! S_ISREG(sb.st_mode)) { 105 ftprintf(stderr, T("%s: not a regular file\n"), name); 106 close(fd); 107 return 0; 108 } 109 if (sb.st_size > XML_MAX_CHUNK_LEN) { 110 close(fd); 111 return 2; /* Cannot be passed to XML_Parse in one go */ 112 } 113 114 nbytes = sb.st_size; 115 /* malloc will return NULL with nbytes == 0, handle files with size 0 */ 116 if (nbytes == 0) { 117 static const char c = '\0'; 118 processor(&c, 0, name, arg); 119 close(fd); 120 return 1; 121 } 122 p = malloc(nbytes); 123 if (! p) { 124 ftprintf(stderr, T("%s: out of memory\n"), name); 125 close(fd); 126 return 0; 127 } 128 n = _EXPAT_read(fd, p, (_EXPAT_read_req_t)nbytes); 129 if (n < 0) { 130 tperror(name); 131 free(p); 132 close(fd); 133 return 0; 134 } 135 if (n != (_EXPAT_read_count_t)nbytes) { 136 ftprintf(stderr, T("%s: read unexpected number of bytes\n"), name); 137 free(p); 138 close(fd); 139 return 0; 140 } 141 processor(p, nbytes, name, arg); 142 free(p); 143 close(fd); 144 return 1; 145 } 146