15bb6a25fSPoul-Henning Kamp /*
25bb6a25fSPoul-Henning Kamp __ __ _
35bb6a25fSPoul-Henning Kamp ___\ \/ /_ __ __ _| |_
45bb6a25fSPoul-Henning Kamp / _ \\ /| '_ \ / _` | __|
55bb6a25fSPoul-Henning Kamp | __// \| |_) | (_| | |_
65bb6a25fSPoul-Henning Kamp \___/_/\_\ .__/ \__,_|\__|
75bb6a25fSPoul-Henning Kamp |_| XML parser
85bb6a25fSPoul-Henning Kamp
95bb6a25fSPoul-Henning Kamp Copyright (c) 1997-2000 Thai Open Source Software Center Ltd
105bb6a25fSPoul-Henning Kamp Copyright (c) 2000 Clark Cooper <coopercc@users.sourceforge.net>
115bb6a25fSPoul-Henning Kamp Copyright (c) 2001-2002 Fred L. Drake, Jr. <fdrake@users.sourceforge.net>
125bb6a25fSPoul-Henning Kamp Copyright (c) 2006 Karl Waclawek <karl@waclawek.net>
135bb6a25fSPoul-Henning Kamp Copyright (c) 2016-2017 Sebastian Pipping <sebastian@pipping.org>
145bb6a25fSPoul-Henning Kamp Copyright (c) 2017 Rhodri James <rhodri@wildebeest.org.uk>
155bb6a25fSPoul-Henning Kamp Licensed under the MIT license:
165bb6a25fSPoul-Henning Kamp
175bb6a25fSPoul-Henning Kamp Permission is hereby granted, free of charge, to any person obtaining
185bb6a25fSPoul-Henning Kamp a copy of this software and associated documentation files (the
195bb6a25fSPoul-Henning Kamp "Software"), to deal in the Software without restriction, including
205bb6a25fSPoul-Henning Kamp without limitation the rights to use, copy, modify, merge, publish,
215bb6a25fSPoul-Henning Kamp distribute, sublicense, and/or sell copies of the Software, and to permit
225bb6a25fSPoul-Henning Kamp persons to whom the Software is furnished to do so, subject to the
235bb6a25fSPoul-Henning Kamp following conditions:
245bb6a25fSPoul-Henning Kamp
255bb6a25fSPoul-Henning Kamp The above copyright notice and this permission notice shall be included
265bb6a25fSPoul-Henning Kamp in all copies or substantial portions of the Software.
275bb6a25fSPoul-Henning Kamp
285bb6a25fSPoul-Henning Kamp THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
295bb6a25fSPoul-Henning Kamp EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
305bb6a25fSPoul-Henning Kamp MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
315bb6a25fSPoul-Henning Kamp NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
325bb6a25fSPoul-Henning Kamp DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
335bb6a25fSPoul-Henning Kamp OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
345bb6a25fSPoul-Henning Kamp USE OR OTHER DEALINGS IN THE SOFTWARE.
355bb6a25fSPoul-Henning Kamp */
365bb6a25fSPoul-Henning Kamp
375bb6a25fSPoul-Henning Kamp #include <sys/types.h>
385bb6a25fSPoul-Henning Kamp #include <sys/mman.h>
395bb6a25fSPoul-Henning Kamp #include <sys/stat.h>
405bb6a25fSPoul-Henning Kamp #include <fcntl.h>
415bb6a25fSPoul-Henning Kamp #include <errno.h>
425bb6a25fSPoul-Henning Kamp #include <string.h>
435bb6a25fSPoul-Henning Kamp #include <stdio.h>
445bb6a25fSPoul-Henning Kamp #include <unistd.h>
455bb6a25fSPoul-Henning Kamp
465bb6a25fSPoul-Henning Kamp #ifndef MAP_FILE
47220ed979SColeman Kane # define MAP_FILE 0
48220ed979SColeman Kane #endif
49220ed979SColeman Kane
50220ed979SColeman Kane #include "xmltchar.h"
51220ed979SColeman Kane #include "filemap.h"
52220ed979SColeman Kane
53220ed979SColeman Kane #ifdef XML_UNICODE_WCHAR_T
545bb6a25fSPoul-Henning Kamp # define XML_FMT_STR "ls"
555bb6a25fSPoul-Henning Kamp #else
565bb6a25fSPoul-Henning Kamp # define XML_FMT_STR "s"
575bb6a25fSPoul-Henning Kamp #endif
585bb6a25fSPoul-Henning Kamp
595bb6a25fSPoul-Henning Kamp int
filemap(const tchar * name,void (* processor)(const void *,size_t,const tchar *,void * arg),void * arg)605bb6a25fSPoul-Henning Kamp filemap(const tchar *name,
615bb6a25fSPoul-Henning Kamp void (*processor)(const void *, size_t, const tchar *, void *arg),
625bb6a25fSPoul-Henning Kamp void *arg) {
635bb6a25fSPoul-Henning Kamp int fd;
645bb6a25fSPoul-Henning Kamp size_t nbytes;
655bb6a25fSPoul-Henning Kamp struct stat sb;
66 void *p;
67
68 fd = topen(name, O_RDONLY);
69 if (fd < 0) {
70 tperror(name);
71 return 0;
72 }
73 if (fstat(fd, &sb) < 0) {
74 tperror(name);
75 close(fd);
76 return 0;
77 }
78 if (! S_ISREG(sb.st_mode)) {
79 close(fd);
80 fprintf(stderr, "%" XML_FMT_STR ": not a regular file\n", name);
81 return 0;
82 }
83 if (sb.st_size > XML_MAX_CHUNK_LEN) {
84 close(fd);
85 return 2; /* Cannot be passed to XML_Parse in one go */
86 }
87
88 nbytes = sb.st_size;
89 /* mmap fails for zero length files */
90 if (nbytes == 0) {
91 static const char c = '\0';
92 processor(&c, 0, name, arg);
93 close(fd);
94 return 1;
95 }
96 p = (void *)mmap((void *)0, (size_t)nbytes, PROT_READ, MAP_FILE | MAP_PRIVATE,
97 fd, (off_t)0);
98 if (p == (void *)-1) {
99 tperror(name);
100 close(fd);
101 return 0;
102 }
103 processor(p, nbytes, name, arg);
104 munmap((void *)p, nbytes);
105 close(fd);
106 return 1;
107 }
108