1 /*
2  * testXPath.c : a small tester program for XPath.
3  *
4  * See Copyright for the status of this software.
5  *
6  * daniel@veillard.com
7  */
8 
9 #include "libxml.h"
10 #if defined(LIBXML_XPATH_ENABLED) && defined(LIBXML_DEBUG_ENABLED)
11 
12 #include <string.h>
13 
14 #ifdef HAVE_SYS_TYPES_H
15 #include <sys/types.h>
16 #endif
17 #ifdef HAVE_SYS_STAT_H
18 #include <sys/stat.h>
19 #endif
20 #ifdef HAVE_FCNTL_H
21 #include <fcntl.h>
22 #endif
23 #ifdef HAVE_UNISTD_H
24 #include <unistd.h>
25 #endif
26 #ifdef HAVE_STDLIB_H
27 #include <stdlib.h>
28 #endif
29 
30 
31 #include <libxml/xpath.h>
32 #include <libxml/tree.h>
33 #include <libxml/parser.h>
34 #include <libxml/debugXML.h>
35 #include <libxml/xmlmemory.h>
36 #include <libxml/parserInternals.h>
37 #include <libxml/xpathInternals.h>
38 #include <libxml/xmlerror.h>
39 #include <libxml/globals.h>
40 #if defined(LIBXML_XPTR_ENABLED)
41 #include <libxml/xpointer.h>
42 static int xptr = 0;
43 #endif
44 static int debug = 0;
45 static int valid = 0;
46 static int expr = 0;
47 static int tree = 0;
48 static int nocdata = 0;
49 static xmlDocPtr document = NULL;
50 
51 /*
52  * Default document
53  */
54 static xmlChar buffer[] =
55 "<?xml version=\"1.0\"?>\n\
56 <EXAMPLE prop1=\"gnome is great\" prop2=\"&amp; linux too\">\n\
57   <head>\n\
58    <title>Welcome to Gnome</title>\n\
59   </head>\n\
60   <chapter>\n\
61    <title>The Linux adventure</title>\n\
62    <p>bla bla bla ...</p>\n\
63    <image href=\"linus.gif\"/>\n\
64    <p>...</p>\n\
65   </chapter>\n\
66   <chapter>\n\
67    <title>Chapter 2</title>\n\
68    <p>this is chapter 2 ...</p>\n\
69   </chapter>\n\
70   <chapter>\n\
71    <title>Chapter 3</title>\n\
72    <p>this is chapter 3 ...</p>\n\
73   </chapter>\n\
74 </EXAMPLE>\n\
75 ";
76 
77 
78 static void
testXPath(const char * str)79 testXPath(const char *str) {
80     xmlXPathObjectPtr res;
81     xmlXPathContextPtr ctxt;
82 
83 #if defined(LIBXML_XPTR_ENABLED)
84     if (xptr) {
85 	ctxt = xmlXPtrNewContext(document, NULL, NULL);
86 	res = xmlXPtrEval(BAD_CAST str, ctxt);
87     } else {
88 #endif
89 	ctxt = xmlXPathNewContext(document);
90 	ctxt->node = xmlDocGetRootElement(document);
91 	if (expr)
92 	    res = xmlXPathEvalExpression(BAD_CAST str, ctxt);
93 	else {
94 	    /* res = xmlXPathEval(BAD_CAST str, ctxt); */
95 	    xmlXPathCompExprPtr comp;
96 
97 	    comp = xmlXPathCompile(BAD_CAST str);
98 	    if (comp != NULL) {
99 		if (tree)
100 		    xmlXPathDebugDumpCompExpr(stdout, comp, 0);
101 
102 		res = xmlXPathCompiledEval(comp, ctxt);
103 		xmlXPathFreeCompExpr(comp);
104 	    } else
105 		res = NULL;
106 	}
107 #if defined(LIBXML_XPTR_ENABLED)
108     }
109 #endif
110     xmlXPathDebugDumpObject(stdout, res, 0);
111     xmlXPathFreeObject(res);
112     xmlXPathFreeContext(ctxt);
113 }
114 
115 static void
testXPathFile(const char * filename)116 testXPathFile(const char *filename) {
117     FILE *input;
118     char expression[5000];
119     int len;
120 
121     input = fopen(filename, "r");
122     if (input == NULL) {
123         xmlGenericError(xmlGenericErrorContext,
124 		"Cannot open %s for reading\n", filename);
125 	return;
126     }
127     while (fgets(expression, 4500, input) != NULL) {
128 	len = strlen(expression);
129 	len--;
130 	while ((len >= 0) &&
131 	       ((expression[len] == '\n') || (expression[len] == '\t') ||
132 		(expression[len] == '\r') || (expression[len] == ' '))) len--;
133 	expression[len + 1] = 0;
134 	if (len >= 0) {
135 	    printf("\n========================\nExpression: %s\n", expression) ;
136 	    testXPath(expression);
137 	}
138     }
139 
140     fclose(input);
141 }
142 
main(int argc,char ** argv)143 int main(int argc, char **argv) {
144     int i;
145     int strings = 0;
146     int usefile = 0;
147     char *filename = NULL;
148 
149     for (i = 1; i < argc ; i++) {
150 #if defined(LIBXML_XPTR_ENABLED)
151 	if ((!strcmp(argv[i], "-xptr")) || (!strcmp(argv[i], "--xptr")))
152 	    xptr++;
153 	else
154 #endif
155 	if ((!strcmp(argv[i], "-debug")) || (!strcmp(argv[i], "--debug")))
156 	    debug++;
157 	else if ((!strcmp(argv[i], "-valid")) || (!strcmp(argv[i], "--valid")))
158 	    valid++;
159 	else if ((!strcmp(argv[i], "-expr")) || (!strcmp(argv[i], "--expr")))
160 	    expr++;
161 	else if ((!strcmp(argv[i], "-tree")) || (!strcmp(argv[i], "--tree")))
162 	    tree++;
163 	else if ((!strcmp(argv[i], "-nocdata")) ||
164 		 (!strcmp(argv[i], "--nocdata")))
165 	    nocdata++;
166 	else if ((!strcmp(argv[i], "-i")) || (!strcmp(argv[i], "--input")))
167 	    filename = argv[++i];
168 	else if ((!strcmp(argv[i], "-f")) || (!strcmp(argv[i], "--file")))
169 	    usefile++;
170     }
171     if (valid != 0) xmlDoValidityCheckingDefaultValue = 1;
172     xmlLoadExtDtdDefaultValue |= XML_DETECT_IDS;
173     xmlLoadExtDtdDefaultValue |= XML_COMPLETE_ATTRS;
174     xmlSubstituteEntitiesDefaultValue = 1;
175 #ifdef LIBXML_SAX1_ENABLED
176     if (nocdata != 0) {
177 	xmlDefaultSAXHandlerInit();
178 	xmlDefaultSAXHandler.cdataBlock = NULL;
179     }
180 #endif
181     if (document == NULL) {
182         if (filename == NULL)
183 	    document = xmlReadDoc(buffer,NULL,NULL,XML_PARSE_COMPACT);
184 	else
185 	    document = xmlReadFile(filename,NULL,XML_PARSE_COMPACT);
186     }
187     for (i = 1; i < argc ; i++) {
188 	if ((!strcmp(argv[i], "-i")) || (!strcmp(argv[i], "--input"))) {
189 	    i++; continue;
190 	}
191 	if (argv[i][0] != '-') {
192 	    if (usefile)
193 	        testXPathFile(argv[i]);
194 	    else
195 		testXPath(argv[i]);
196 	    strings ++;
197 	}
198     }
199     if (strings == 0) {
200 	printf("Usage : %s [--debug] [--copy] stringsorfiles ...\n",
201 	       argv[0]);
202 	printf("\tParse the XPath strings and output the result of the parsing\n");
203 	printf("\t--debug : dump a debug version of the result\n");
204 	printf("\t--valid : switch on DTD support in the parser\n");
205 #if defined(LIBXML_XPTR_ENABLED)
206 	printf("\t--xptr : expressions are XPointer expressions\n");
207 #endif
208 	printf("\t--expr : debug XPath expressions only\n");
209 	printf("\t--tree : show the compiled XPath tree\n");
210 	printf("\t--nocdata : do not generate CDATA nodes\n");
211 	printf("\t--input filename : or\n");
212 	printf("\t-i filename      : read the document from filename\n");
213 	printf("\t--file : or\n");
214 	printf("\t-f     : read queries from files, args\n");
215     }
216     if (document != NULL)
217 	xmlFreeDoc(document);
218     xmlCleanupParser();
219     xmlMemoryDump();
220 
221     return(0);
222 }
223 #else
224 #include <stdio.h>
main(int argc ATTRIBUTE_UNUSED,char ** argv ATTRIBUTE_UNUSED)225 int main(int argc ATTRIBUTE_UNUSED, char **argv ATTRIBUTE_UNUSED) {
226     printf("%s : XPath/Debug support not compiled in\n", argv[0]);
227     return(0);
228 }
229 #endif /* LIBXML_XPATH_ENABLED */
230