A libxml2 parser in C.

CVS patchset: 7315
CVS date: 2004/06/14 02:26:19

3 files changed, 173 insertions, 2 deletions

diff --git a/tools/.cvsignore b/tools/.cvsignore
index e580b2a12..78ac92345 100644
--- a/tools/.cvsignore
+++ b/tools/.cvsignore
@@ -15,6 +15,7 @@ rpmgraph
 rpminject
 rpmsort
 rpmtool
+rpmxml
 striptofile
 tpkgid
 unstripfile
diff --git a/tools/Makefile.am b/tools/Makefile.am
index 9909c58c8..a80954044 100644
--- a/tools/Makefile.am
+++ b/tools/Makefile.am
@@ -14,9 +14,10 @@ INCLUDES = -I. \
 	@WITH_LIBDWARF_INCLUDE@ \
 	-I$(top_srcdir)/file/src \
 	@INCPATH@ \
+	-I/usr/include/libxml2
 	-I$(top_srcdir)/misc
 
-EXTRA_DIST =	rpminject.c rpmsort.c hashtab.h
+EXTRA_DIST =	rpminject.c rpmsort.c rpmxml.c hashtab.h
 
 EXTRA_PROGRAMS = convertdb1 rpminject rpmsort
 
@@ -26,7 +27,7 @@ LDADD = \
 
 staticLDFLAGS = @LDFLAGS_STATIC@ @LDFLAGS_NPTL@
 
-noinst_PROGRAMS = rpmtool dumpdb
+noinst_PROGRAMS = rpmtool rpmxml dumpdb
 
 pkgbindir = @RPMCONFIGDIR@
 pkgbin_PROGRAMS = debugedit javadeps rpmcache rpmdeps rpmfile
@@ -68,4 +69,7 @@ rpmsort_SOURCES =	rpmsort.c
 rpmtool_SOURCES =	rpmtool.c
 #rpmtool_LDFLAGS =	$(staticLDFLAGS)
 
+rpmxml_SOURCES =	rpmxml.c
+rpmxml_LDADD =		-lxml2
+
 $(PROGRAMS): $(LDADD)
diff --git a/tools/rpmxml.c b/tools/rpmxml.c
new file mode 100644
index 000000000..95107b36a
--- /dev/null
+++ b/tools/rpmxml.c
@@ -0,0 +1,166 @@
+#include "system.h"
+#include <libxml/xmlreader.h>
+#include "debug.h"
+
+typedef struct rpmxp_s * rpmxp;
+
+struct rpmxp_s {
+    xmlTextReaderPtr reader;
+
+    xmlChar * name;
+    xmlChar * value;
+    int depth;
+    int nodeType;
+    int isEmptyElement;
+
+    int n;
+};
+
+static int _rpmxp_debug = 0;
+
+static rpmxp rpmxpFree(rpmxp xp)
+{
+    if (xp != NULL) {
+	if (xp->value) {
+	    xmlFree(xp->value);
+	    xp->value = NULL;
+	}
+	if (xp->name) {
+	    xmlFree(xp->name);
+	    xp->name = NULL;
+	}
+	if (xp->reader != NULL) {
+	    xmlFreeTextReader(xp->reader);
+	    xp->reader = NULL;
+	}
+	free(xp);
+	xp = NULL;
+    }
+    return xp;
+}
+
+static rpmxp rpmxpNew(const char * fn)
+{
+    rpmxp xp = calloc(1, sizeof(*xp));
+
+    if (xp == NULL)
+	return NULL;
+    if (fn) {
+	int xx;
+	xp->reader = xmlNewTextReaderFilename(fn);
+	if (xp->reader == NULL)
+	    return rpmxpFree(xp);
+	xx = xmlTextReaderSetParserProp(xp->reader, XML_PARSER_VALIDATE, 1);
+	xx = xmlTextReaderSetParserProp(xp->reader, XML_PARSER_SUBST_ENTITIES, 1);
+    }
+    xp->name = NULL;
+    xp->value = NULL;
+    xp->depth = 0;
+    xp->nodeType = 0;
+    xp->isEmptyElement = 0;
+    xp->n = 2;
+    return xp;
+}
+
+static int rpmxpRead(rpmxp xp)
+{
+    return xmlTextReaderRead(xp->reader);
+}
+
+static void rpmxpProcess(rpmxp xp)
+{
+    xp->name = xmlTextReaderName(xp->reader);
+    xp->value = xmlTextReaderValue(xp->reader);
+    xp->depth = xmlTextReaderDepth(xp->reader);
+    xp->nodeType = xmlTextReaderNodeType(xp->reader);
+    xp->isEmptyElement = xmlTextReaderIsEmptyElement(xp->reader);
+
+    if (xp->name == NULL)
+	xp->name = xmlStrdup(BAD_CAST "--");
+
+if (_rpmxp_debug)
+printf("%d %d %s %d\n", xp->depth, xp->nodeType, xp->name, xp->isEmptyElement);
+    switch (xp->nodeType) {
+    case XML_READER_TYPE_ELEMENT:
+	printf("%*s<%s", (xp->n * xp->depth), "", xp->name);
+	while (xmlTextReaderMoveToNextAttribute(xp->reader) != 0) {
+	    xmlChar * attrN = xmlTextReaderName(xp->reader);
+	    xmlChar * attrV = xmlTextReaderValue(xp->reader);
+	    printf(" %s", attrN);
+	    if (attrV) {
+		printf("=\"%s\"", attrV);
+		xmlFree(attrV);
+	    }
+	    xmlFree(attrN);
+	}
+	printf(">");
+	if (xp->depth < 2)
+	    printf("\n");
+	break;
+    case XML_READER_TYPE_END_ELEMENT:
+	if (xp->depth < 2)
+	    printf("%*s", (xp->n * xp->depth), "");
+	printf("</%s>\n", xp->name);
+	break;
+    case XML_READER_TYPE_TEXT:
+	printf("%s", xp->value);
+	break;
+    case XML_READER_TYPE_DOCUMENT_TYPE:
+	break;
+    case XML_READER_TYPE_SIGNIFICANT_WHITESPACE:
+	break;
+
+    case XML_READER_TYPE_NONE:
+    case XML_READER_TYPE_ATTRIBUTE:
+    case XML_READER_TYPE_CDATA:
+    case XML_READER_TYPE_ENTITY_REFERENCE:
+    case XML_READER_TYPE_ENTITY:
+    case XML_READER_TYPE_PROCESSING_INSTRUCTION:
+    case XML_READER_TYPE_COMMENT:
+    case XML_READER_TYPE_DOCUMENT:
+    case XML_READER_TYPE_DOCUMENT_FRAGMENT:
+    case XML_READER_TYPE_NOTATION:
+    case XML_READER_TYPE_WHITESPACE:
+    case XML_READER_TYPE_END_ENTITY:
+    case XML_READER_TYPE_XML_DECLARATION:
+    default:
+	printf("%d %d %s %d\n", xp->depth, xp->nodeType,
+		xp->name, xp->isEmptyElement);
+	if (xp->value)
+	    printf(" %s", xp->value);
+	if (xp->depth < 2)
+	    printf("\n");
+	break;
+    }
+
+
+    if (xp->value != NULL) {
+        xmlFree(xp->value);
+	xp->value = NULL;
+    }
+    if (xp->name != NULL) {
+	xmlFree(xp->name);
+	xp->name = NULL;
+    }
+}
+
+static int streamFile(const char * fn)
+{
+    rpmxp xp = rpmxpNew(fn);
+    int ret = -1;
+
+    if (xp != NULL)
+    while ((ret = rpmxpRead(xp)) == 1)
+	rpmxpProcess(xp);
+    xp = rpmxpFree(xp);
+    return ret;
+}
+
+int main(int argc, char ** argv)
+{
+    const char * fn = "time.xml";
+    int ec = 0;
+
+    streamFile(fn);
+    return ec;
+}