Added compression on saving, Daniel.

ChangeLog

@@ -1,3 +1,9 @@
+Tue Sep 22 20:47:38 EDT 1998
+
+	* tree.c, tree.h: added saving with compression and added interfaces
+	  to control the compression level (xmlGetCompressMode,
+	  xmlSetCompressMode) and a new save to filename function (xmlSaveFile).
+
 Mon Sep 21 20:11:13 EDT 1998 Daniel Veillard <Daniel.Veillard@w3.org>
 
 	* parser.c: corrected a loop for files of size 0

include/libxml/parser.h

@@ -122,8 +122,8 @@ typedef struct xmlSAXHandler {
  * Global variables: just the SAX interface tables we are looking for full
  *      reentrancy of the code !
  */
-xmlSAXLocator xmlDefaultSAXLocator;
+extern xmlSAXLocator xmlDefaultSAXLocator;
-xmlSAXHandler xmlDefaultSAXHandler;
+extern xmlSAXHandler xmlDefaultSAXHandler;
 
 /*
  * Interfaces

include/libxml/tree.h

@@ -166,11 +166,15 @@ extern void xmlSetNs(xmlNodePtr node, xmlNsPtr ns);
 extern xmlNodePtr xmlNewChild(xmlNodePtr parent, xmlNsPtr ns,
                               const CHAR *name, CHAR *content);
 
-extern void xmlDocDumpMemory(xmlDocPtr cur, CHAR**mem, int *size);
-extern void xmlDocDump(FILE *f, xmlDocPtr doc);
 extern void xmlBufferWriteCHAR(const CHAR *string);
 extern void xmlBufferWriteChar(const char *string);
 
+extern void xmlDocDumpMemory(xmlDocPtr cur, CHAR**mem, int *size);
+extern void xmlDocDump(FILE *f, xmlDocPtr doc);
+int xmlSaveFile(const char *filename, xmlDocPtr cur);
+
+extern int  xmlGetCompressMode(void);
+extern void xmlSetCompressMode(int mode);
 
 #ifdef __cplusplus
 }

parser.h

@@ -122,8 +122,8 @@ typedef struct xmlSAXHandler {
  * Global variables: just the SAX interface tables we are looking for full
  *      reentrancy of the code !
  */
-xmlSAXLocator xmlDefaultSAXLocator;
+extern xmlSAXLocator xmlDefaultSAXLocator;
-xmlSAXHandler xmlDefaultSAXHandler;
+extern xmlSAXHandler xmlDefaultSAXHandler;
 
 /*
  * Interfaces

tree.c

@@ -8,11 +8,16 @@
  * TODO Cleanup the Dump mechanism.
  */
 
+#include "config.h"
 #include <stdio.h>
 #include <ctype.h>
 #include <malloc.h>
 #include <string.h> /* for memset() only ! */
 
+#ifdef HAVE_ZLIB_H
+#include <zlib.h>
+#endif
+
 #include "tree.h"
 #include "entities.h"
 
@@ -1149,6 +1154,21 @@ void xmlDocDumpMemory(xmlDocPtr cur, CHAR**mem, int *size) {
     *size = buffer_index;
 }
 
+/*
+ * Get the compression mode
+ */
+
+static int xmlCompressMode = 0;
+
+int  xmlGetCompressMode(void) {
+    return(xmlCompressMode);
+}
+void xmlSetCompressMode(int mode) {
+    if (mode < 0) xmlCompressMode = 0;
+    if (mode > 9) xmlCompressMode = 9;
+    else xmlCompressMode = mode;
+}
+
 /*
  * Dump an XML document to the given FD
  */
@@ -1164,6 +1184,49 @@ void xmlDocDump(FILE *f, xmlDocPtr cur) {
     fwrite(buffer, sizeof(CHAR), buffer_index, f);
 }
 
+/*
+ * Dump an XML document to a file.
+ */
+
+int xmlSaveFile(const char *filename, xmlDocPtr cur) {
+#ifdef HAVE_ZLIB_H
+    gzFile zoutput = NULL;
+    char mode[15];
+#endif
+    FILE *output;
+    int ret;
+
+#ifdef HAVE_ZLIB_H
+    if ((xmlCompressMode > 0) && (xmlCompressMode <= 9)) {
+        sprintf(mode, "w%d", xmlCompressMode);
+	zoutput = gzopen(filename, mode);
+    }
+    if (zoutput == NULL) {
+#endif
+        output = fopen(filename, "w");
+	if (output == NULL) return(-1);
+#ifdef HAVE_ZLIB_H
+    }
+#endif
+
+    /* 
+     * save the content to a temp buffer.
+     */
+    buffer_index = 0;
+    xmlDocContentDump(cur);
+
+#ifdef HAVE_ZLIB_H
+    if (zoutput != NULL) {
+        ret = gzwrite(zoutput, buffer, sizeof(CHAR) * buffer_index);
+	gzclose(zoutput);
+	return(ret);
+    }
+#endif
+    ret = fwrite(buffer, sizeof(CHAR), buffer_index, output);
+    fclose(output);
+    return(ret * sizeof(CHAR));
+}
+
 /************************************************************************
  *									*
  *				Debug					*

tree.h

@@ -166,11 +166,15 @@ extern void xmlSetNs(xmlNodePtr node, xmlNsPtr ns);
 extern xmlNodePtr xmlNewChild(xmlNodePtr parent, xmlNsPtr ns,
                               const CHAR *name, CHAR *content);
 
-extern void xmlDocDumpMemory(xmlDocPtr cur, CHAR**mem, int *size);
-extern void xmlDocDump(FILE *f, xmlDocPtr doc);
 extern void xmlBufferWriteCHAR(const CHAR *string);
 extern void xmlBufferWriteChar(const char *string);
 
+extern void xmlDocDumpMemory(xmlDocPtr cur, CHAR**mem, int *size);
+extern void xmlDocDump(FILE *f, xmlDocPtr doc);
+int xmlSaveFile(const char *filename, xmlDocPtr cur);
+
+extern int  xmlGetCompressMode(void);
+extern void xmlSetCompressMode(int mode);
 
 #ifdef __cplusplus
 }