merged new xmlrpc-c revision 1472 from https://xmlrpc-c.svn.sourceforge.net/svnroot/xmlrpc-c/trunk

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@8545 d0543943-73ff-0310-b7d9-9358b9ac24b2

libs/xmlrpc-c/lib/libutil/make_printable.c

@@ -0,0 +1,101 @@
+#define _GNU_SOURCE
+
+#include <stdarg.h>
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <ctype.h>
+
+#include "xmlrpc_config.h"
+#include "xmlrpc-c/string_int.h"
+
+
+
+const char *
+xmlrpc_makePrintable_lp(const char * const input,
+                        size_t       const inputLength) {
+/*----------------------------------------------------------------------------
+   Convert an arbitrary string of characters in length-pointer form to
+   printable ASCII.  E.g. convert newlines to "\n".
+
+   Return the result in newly malloc'ed storage.  Return NULL if we can't
+   get the storage.
+-----------------------------------------------------------------------------*/
+    char * output;
+
+    output = malloc(inputLength*4+1);
+        /* Worst case, we render a character like \x01 -- 4 characters */
+
+    if (output != NULL) {
+        unsigned int inputCursor, outputCursor;
+
+        for (inputCursor = 0, outputCursor = 0; 
+             inputCursor < inputLength; 
+             ++inputCursor) {
+
+            if (0) {
+            } else if (input[inputCursor] == '\\') {
+                output[outputCursor++] = '\\';
+                output[outputCursor++] = '\\';
+            } else if (input[inputCursor] == '\n') {
+                output[outputCursor++] = '\\';
+                output[outputCursor++] = 'n';
+            } else if (input[inputCursor] == '\t') {
+                output[outputCursor++] = '\\';
+                output[outputCursor++] = 't';
+            } else if (input[inputCursor] == '\a') {
+                output[outputCursor++] = '\\';
+                output[outputCursor++] = 'a';
+            } else if (input[inputCursor] == '\r') {
+                output[outputCursor++] = '\\';
+                output[outputCursor++] = 'r';
+            } else if (isprint(input[inputCursor])) {
+                output[outputCursor++] = input[inputCursor]; 
+            } else {
+                snprintf(&output[outputCursor], 5, "\\x%02x", 
+                         input[inputCursor]);
+                outputCursor += 4;
+            }
+        }
+        output[outputCursor++] = '\0';
+    }
+    return output;
+}
+
+
+
+const char * 
+xmlrpc_makePrintable(const char * const input) {
+/*----------------------------------------------------------------------------
+   Convert an arbitrary string of characters (NUL-terminated, though) to
+   printable ASCII.  E.g. convert newlines to "\n".
+
+   Return the result in newly malloc'ed storage.  Return NULL if we can't
+   get the storage.
+-----------------------------------------------------------------------------*/
+    return xmlrpc_makePrintable_lp(input, strlen(input));
+}
+
+
+
+const char *
+xmlrpc_makePrintableChar(char const input) {
+/*----------------------------------------------------------------------------
+   Return an ASCIIZ string consisting of the character 'input',
+   properly escaped so as to be printable.  E.g., in C notation, '\n'
+   turns into "\\n"
+-----------------------------------------------------------------------------*/
+    const char * retval;
+
+    if (input == '\0')
+        retval = strdup("\\0");
+    else {
+        char buffer[2];
+        
+        buffer[0] = input;
+        buffer[1] = '\0';
+        
+        retval = xmlrpc_makePrintable(buffer);
+    }
+    return retval;
+}