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-rw-r--r--contrib/expat/examples/elements.c52
1 files changed, 38 insertions, 14 deletions
diff --git a/contrib/expat/examples/elements.c b/contrib/expat/examples/elements.c
index eb0c729bff15..e5fb850d501b 100644
--- a/contrib/expat/examples/elements.c
+++ b/contrib/expat/examples/elements.c
@@ -11,7 +11,12 @@
|_| XML parser
Copyright (c) 1997-2000 Thai Open Source Software Center Ltd
- Copyright (c) 2000-2017 Expat development team
+ Copyright (c) 2001-2003 Fred L. Drake, Jr. <fdrake@users.sourceforge.net>
+ Copyright (c) 2004-2006 Karl Waclawek <karl@waclawek.net>
+ Copyright (c) 2005-2007 Steven Solie <steven@solie.ca>
+ Copyright (c) 2016-2022 Sebastian Pipping <sebastian@pipping.org>
+ Copyright (c) 2017 Rhodri James <rhodri@wildebeest.org.uk>
+ Copyright (c) 2019 Zhongyuan Zhou <zhouzhongyuan@huawei.com>
Licensed under the MIT license:
Permission is hereby granted, free of charge, to any person obtaining
@@ -44,7 +49,6 @@
#endif
#ifdef XML_UNICODE_WCHAR_T
-# include <wchar.h>
# define XML_FMT_STR "ls"
#else
# define XML_FMT_STR "s"
@@ -53,7 +57,7 @@
static void XMLCALL
startElement(void *userData, const XML_Char *name, const XML_Char **atts) {
int i;
- int *depthPtr = (int *)userData;
+ int *const depthPtr = (int *)userData;
(void)atts;
for (i = 0; i < *depthPtr; i++)
@@ -64,34 +68,54 @@ startElement(void *userData, const XML_Char *name, const XML_Char **atts) {
static void XMLCALL
endElement(void *userData, const XML_Char *name) {
- int *depthPtr = (int *)userData;
+ int *const depthPtr = (int *)userData;
(void)name;
*depthPtr -= 1;
}
int
-main(int argc, char *argv[]) {
- char buf[BUFSIZ];
+main(void) {
XML_Parser parser = XML_ParserCreate(NULL);
int done;
int depth = 0;
- (void)argc;
- (void)argv;
+
+ if (! parser) {
+ fprintf(stderr, "Couldn't allocate memory for parser\n");
+ return 1;
+ }
XML_SetUserData(parser, &depth);
XML_SetElementHandler(parser, startElement, endElement);
+
do {
- size_t len = fread(buf, 1, sizeof(buf), stdin);
- done = len < sizeof(buf);
- if (XML_Parse(parser, buf, (int)len, done) == XML_STATUS_ERROR) {
- fprintf(stderr, "%" XML_FMT_STR " at line %" XML_FMT_INT_MOD "u\n",
- XML_ErrorString(XML_GetErrorCode(parser)),
- XML_GetCurrentLineNumber(parser));
+ void *const buf = XML_GetBuffer(parser, BUFSIZ);
+ if (! buf) {
+ fprintf(stderr, "Couldn't allocate memory for buffer\n");
+ XML_ParserFree(parser);
+ return 1;
+ }
+
+ const size_t len = fread(buf, 1, BUFSIZ, stdin);
+
+ if (ferror(stdin)) {
+ fprintf(stderr, "Read error\n");
+ XML_ParserFree(parser);
+ return 1;
+ }
+
+ done = feof(stdin);
+
+ if (XML_ParseBuffer(parser, (int)len, done) == XML_STATUS_ERROR) {
+ fprintf(stderr,
+ "Parse error at line %" XML_FMT_INT_MOD "u:\n%" XML_FMT_STR "\n",
+ XML_GetCurrentLineNumber(parser),
+ XML_ErrorString(XML_GetErrorCode(parser)));
XML_ParserFree(parser);
return 1;
}
} while (! done);
+
XML_ParserFree(parser);
return 0;
}