1 /*
2                             __  __            _
3                          ___\ \/ /_ __   __ _| |_
4                         / _ \\  /| '_ \ / _` | __|
5                        |  __//  \| |_) | (_| | |_
6                         \___/_/\_\ .__/ \__,_|\__|
7                                  |_| XML parser
8 
9    Copyright (c) 2003-2006 Karl Waclawek <karl@waclawek.net>
10    Copyright (c) 2005-2007 Steven Solie <steven@solie.ca>
11    Copyright (c) 2017-2023 Sebastian Pipping <sebastian@pipping.org>
12    Copyright (c) 2017      Rhodri James <rhodri@wildebeest.org.uk>
13    Licensed under the MIT license:
14 
15    Permission is  hereby granted,  free of charge,  to any  person obtaining
16    a  copy  of  this  software   and  associated  documentation  files  (the
17    "Software"),  to  deal in  the  Software  without restriction,  including
18    without  limitation the  rights  to use,  copy,  modify, merge,  publish,
19    distribute, sublicense, and/or sell copies of the Software, and to permit
20    persons  to whom  the Software  is  furnished to  do so,  subject to  the
21    following conditions:
22 
23    The above copyright  notice and this permission notice  shall be included
24    in all copies or substantial portions of the Software.
25 
26    THE  SOFTWARE  IS  PROVIDED  "AS  IS",  WITHOUT  WARRANTY  OF  ANY  KIND,
27    EXPRESS  OR IMPLIED,  INCLUDING  BUT  NOT LIMITED  TO  THE WARRANTIES  OF
28    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
29    NO EVENT SHALL THE AUTHORS OR  COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
30    DAMAGES OR  OTHER LIABILITY, WHETHER  IN AN  ACTION OF CONTRACT,  TORT OR
31    OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
32    USE OR OTHER DEALINGS IN THE SOFTWARE.
33 */
34 
35 #include <sys/stat.h>
36 #include <assert.h>
37 #include <stddef.h> // ptrdiff_t
38 #include <stdlib.h>
39 #include <stdio.h>
40 #include <time.h>
41 #include "expat.h"
42 
43 #ifdef XML_LARGE_SIZE
44 #  define XML_FMT_INT_MOD "ll"
45 #else
46 #  define XML_FMT_INT_MOD "l"
47 #endif
48 
49 #ifdef XML_UNICODE_WCHAR_T
50 #  define XML_FMT_STR "ls"
51 #else
52 #  define XML_FMT_STR "s"
53 #endif
54 
55 static void
usage(const char * prog,int rc)56 usage(const char *prog, int rc) {
57   fprintf(stderr, "usage: %s [-n] filename bufferSize nr_of_loops\n", prog);
58   exit(rc);
59 }
60 
61 int
main(int argc,char * argv[])62 main(int argc, char *argv[]) {
63   XML_Parser parser;
64   char *XMLBuf, *XMLBufEnd, *XMLBufPtr;
65   FILE *fd;
66   struct stat fileAttr;
67   int nrOfLoops, bufferSize, i, isFinal;
68   size_t fileSize;
69   int j = 0, ns = 0;
70   clock_t tstart, tend;
71   double cpuTime = 0.0;
72 
73   if (argc > 1) {
74     if (argv[1][0] == '-') {
75       if (argv[1][1] == 'n' && argv[1][2] == '\0') {
76         ns = 1;
77         j = 1;
78       } else
79         usage(argv[0], 1);
80     }
81   }
82 
83   if (argc != j + 4)
84     usage(argv[0], 1);
85 
86   if (stat(argv[j + 1], &fileAttr) != 0) {
87     fprintf(stderr, "could not access file '%s'\n", argv[j + 1]);
88     return 2;
89   }
90 
91   fd = fopen(argv[j + 1], "r");
92   if (! fd) {
93     fprintf(stderr, "could not open file '%s'\n", argv[j + 1]);
94     exit(2);
95   }
96 
97   bufferSize = atoi(argv[j + 2]);
98   nrOfLoops = atoi(argv[j + 3]);
99   if (bufferSize <= 0 || nrOfLoops <= 0) {
100     fprintf(stderr, "buffer size and nr of loops must be greater than zero.\n");
101     exit(3);
102   }
103 
104   XMLBuf = malloc(fileAttr.st_size);
105   fileSize = fread(XMLBuf, sizeof(char), fileAttr.st_size, fd);
106   fclose(fd);
107 
108   if (ns)
109     parser = XML_ParserCreateNS(NULL, '!');
110   else
111     parser = XML_ParserCreate(NULL);
112 
113   i = 0;
114   XMLBufEnd = XMLBuf + fileSize;
115   while (i < nrOfLoops) {
116     XMLBufPtr = XMLBuf;
117     isFinal = 0;
118     tstart = clock();
119     do {
120       ptrdiff_t parseBufferSize = XMLBufEnd - XMLBufPtr;
121       if (parseBufferSize <= (ptrdiff_t)bufferSize)
122         isFinal = 1;
123       else
124         parseBufferSize = bufferSize;
125       assert(parseBufferSize <= (ptrdiff_t)bufferSize);
126       if (! XML_Parse(parser, XMLBufPtr, (int)parseBufferSize, isFinal)) {
127         fprintf(stderr,
128                 "error '%" XML_FMT_STR "' at line %" XML_FMT_INT_MOD
129                 "u character %" XML_FMT_INT_MOD "u\n",
130                 XML_ErrorString(XML_GetErrorCode(parser)),
131                 XML_GetCurrentLineNumber(parser),
132                 XML_GetCurrentColumnNumber(parser));
133         free(XMLBuf);
134         XML_ParserFree(parser);
135         exit(4);
136       }
137       XMLBufPtr += bufferSize;
138     } while (! isFinal);
139     tend = clock();
140     cpuTime += ((double)(tend - tstart)) / CLOCKS_PER_SEC;
141     XML_ParserReset(parser, NULL);
142     i++;
143   }
144 
145   XML_ParserFree(parser);
146   free(XMLBuf);
147 
148   printf("%d loops, with buffer size %d. Average time per loop: %f\n",
149          nrOfLoops, bufferSize, cpuTime / (double)nrOfLoops);
150   return 0;
151 }
152