Temporary commit of merge of MariaDB 10.0-base and MySQL 5.6

sql/sql_bootstrap.cc

@@ -0,0 +1,99 @@
+/* Copyright (c) 2010, Oracle and/or its affiliates.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; version 2 of the License.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software Foundation,
+   51 Franklin Street, Suite 500, Boston, MA 02110-1335 USA */
+
+
+#include <ctype.h>
+#include <string.h>
+#include "sql_bootstrap.h"
+
+int read_bootstrap_query(char *query, int *query_length,
+                         fgets_input_t input, fgets_fn_t fgets_fn)
+{
+  char line_buffer[MAX_BOOTSTRAP_LINE_SIZE];
+  const char *line;
+  int len;
+  int query_len= 0;
+
+  for ( ; ; )
+  {
+    line= (*fgets_fn)(line_buffer, sizeof(line_buffer), input);
+
+    if (line == NULL)
+      return (query_len ? READ_BOOTSTRAP_ERROR : READ_BOOTSTRAP_EOF);
+
+    len= strlen(line);
+
+    /*
+      Remove trailing whitespace characters.
+      This assumes:
+      - no multibyte encoded character can be found at the very end of a line,
+      - whitespace characters from the "C" locale only.
+     which is sufficient for the kind of queries found
+     in the bootstrap scripts.
+    */
+    while (len && (isspace(line[len - 1])))
+      len--;
+    /*
+      Cleanly end the string, so we don't have to test len > x
+      all the time before reading line[x], in the code below.
+    */
+    line_buffer[len]= '\0';
+
+    /* Skip blank lines */
+    if (len == 0)
+      continue;
+
+    /* Skip # comments */
+    if (line[0] == '#')
+      continue;
+    
+    /* Skip -- comments */
+    if ((line[0] == '-') && (line[1] == '-'))
+      continue;
+
+    /* Skip delimiter, ignored. */
+    if (strncmp(line, "delimiter", 9) == 0)
+      continue;
+
+    /* Append the current line to a multi line query. */
+
+    if (query_len + len + 1 >= MAX_BOOTSTRAP_QUERY_SIZE)
+      return READ_BOOTSTRAP_ERROR;
+
+    if (query_len != 0)
+    {
+      /*
+        Append a \n to the current line, if any,
+        to preserve the intended presentation.
+       */
+      query[query_len]= '\n';
+      query_len++;
+    }
+    memcpy(query + query_len, line, len);
+    query_len+= len;
+
+    if (line[len - 1] == ';')
+    {
+      /*
+        The last line is terminated by ';'.
+        Return the query found.
+      */
+      query[query_len]= '\0';
+      *query_length= query_len;
+      return 0;
+    }
+  }
+}
+