1 files changed, 135 insertions, 0 deletions
diff --git a/subversion/libsvn_subr/apr_escape.c b/subversion/libsvn_subr/apr_escape.c
new file mode 100644
index 000000000000..caa25d9fc573
--- /dev/null
+++ b/subversion/libsvn_subr/apr_escape.c
@@ -0,0 +1,135 @@
+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* The code in this file is copied from APR (initially from APR 1.7.0)
+ * to provide compatibility for building against APR < 1.5.0.
+ */
+
+#include "private/svn_dep_compat.h"
+
+#if !APR_VERSION_AT_LEAST(1,5,0)
+
+#include <apr_lib.h>
+#include <apr_strings.h>
+
+/* from apr_escape_test_char.h */
+#define T_ESCAPE_SHELL_CMD     (1)
+#define T_ESCAPE_PATH_SEGMENT  (2)
+#define T_OS_ESCAPE_PATH       (4)
+#define T_ESCAPE_ECHO          (8)
+#define T_ESCAPE_URLENCODED    (16)
+#define T_ESCAPE_XML           (32)
+#define T_ESCAPE_LDAP_DN       (64)
+#define T_ESCAPE_LDAP_FILTER   (128)
+
+static const unsigned char test_char_table[256] = {
+    224,222,222,222,222,222,222,222,222,222,223,222,222,222,222,222,222,222,222,222,
+    222,222,222,222,222,222,222,222,222,222,222,222,6,16,127,22,17,22,49,17,
+    145,145,129,80,80,0,0,18,0,0,0,0,0,0,0,0,0,0,16,87,
+    119,16,119,23,16,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+    0,0,0,0,0,0,0,0,0,0,0,23,223,23,23,0,23,0,0,0,
+    0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+    0,0,0,23,23,23,17,222,222,222,222,222,222,222,222,222,222,222,222,222,
+    222,222,222,222,222,222,222,222,222,222,222,222,222,222,222,222,222,222,222,222,
+    222,222,222,222,222,222,222,222,222,222,222,222,222,222,222,222,222,222,222,222,
+    222,222,222,222,222,222,222,222,222,222,222,222,222,222,222,222,222,222,222,222,
+    222,222,222,222,222,222,222,222,222,222,222,222,222,222,222,222,222,222,222,222,
+    222,222,222,222,222,222,222,222,222,222,222,222,222,222,222,222,222,222,222,222,
+    222,222,222,222,222,222,222,222,222,222,222,222,222,222,222,222 
+};
+
+/* from apr_encode_private.h */
+#if APR_CHARSET_EBCDIC
+#error This Subversion compatibility code for APR<1.5 does not support EBCDIC.
+#else                           /* APR_CHARSET_EBCDIC */
+#define ENCODE_TO_ASCII(ch)  (ch)
+#define ENCODE_TO_NATIVE(ch)  (ch)
+#endif                          /* !APR_CHARSET_EBCDIC */
+
+/* we assume the folks using this ensure 0 <= c < 256... which means
+ * you need a cast to (unsigned char) first, you can't just plug a
+ * char in here and get it to work, because if char is signed then it
+ * will first be sign extended.
+ */
+#define TEST_CHAR(c, f)        (test_char_table[(unsigned)(c)] & (f))
+
+APR_DECLARE(apr_status_t) apr_escape_shell(char *escaped, const char *str,
+        apr_ssize_t slen, apr_size_t *len)
+{
+    unsigned char *d;
+    const unsigned char *s;
+    apr_size_t size = 1;
+    int found = 0;
+
+    d = (unsigned char *) escaped;
+    s = (const unsigned char *) str;
+
+    if (s) {
+        if (d) {
+            for (; *s && slen; ++s, slen--) {
+#if defined(OS2) || defined(WIN32)
+                /*
+                 * Newlines to Win32/OS2 CreateProcess() are ill advised.
+                 * Convert them to spaces since they are effectively white
+                 * space to most applications
+                 */
+                if (*s == '\r' || *s == '\n') {
+                    if (d) {
+                        *d++ = ' ';
+                        found = 1;
+                    }
+                    continue;
+                }
+#endif
+                if (TEST_CHAR(*s, T_ESCAPE_SHELL_CMD)) {
+                    *d++ = '\\';
+                    size++;
+                    found = 1;
+                }
+                *d++ = *s;
+                size++;
+            }
+            *d = '\0';
+        }
+        else {
+            for (; *s && slen; ++s, slen--) {
+                if (TEST_CHAR(*s, T_ESCAPE_SHELL_CMD)) {
+                    size++;
+                    found = 1;
+                }
+                size++;
+            }
+        }
+    }
+
+    if (len) {
+        *len = size;
+    }
+    if (!found) {
+        return APR_NOTFOUND;
+    }
+
+    return APR_SUCCESS;
+}
+
+#else  /* APR_VERSION_AT_LEAST(1,5,0) */
+
+/* Silence OSX ranlib warnings about object files with no symbols. */
+#include <apr.h>
+extern const apr_uint32_t svn__fake__apr_escape;
+const apr_uint32_t svn__fake__apr_escape = 0xdeadbeef;
+
+#endif /* !APR_VERSION_AT_LEAST(1,5,0) */