Libc-997.1.1.tar.gz

[apple/libc.git] / stdio / FreeBSD / xprintf_quote.c

diff --git a/stdio/FreeBSD/xprintf_quote.c b/stdio/FreeBSD/xprintf_quote.c
new file mode 100644 (file)
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+++ b/stdio/FreeBSD/xprintf_quote.c
@@ -0,0 +1,99 @@
+/*-
+ * Copyright (c) 2005 Poul-Henning Kamp
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD: src/lib/libc/stdio/xprintf_quote.c,v 1.2 2006/03/02 08:53:45 phk Exp $
+ */
+
+#include <namespace.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <ctype.h>
+#include <wchar.h>
+#include <vis.h>
+#include <assert.h>
+#include <sys/time.h>
+#include "printf.h"
+#include "xprintf_private.h"
+
+__private_extern__ int
+__printf_arginfo_quote(const struct printf_info *pi __unused, size_t n, int *argt)
+{
+
+       assert(n >= 1);
+       argt[0] = PA_POINTER;
+       return (1);
+}
+
+__private_extern__ int
+__printf_render_quote(struct __printf_io *io, const struct printf_info *pi __unused, const void *const *arg)
+{
+       const char *str, *p, *t, *o;
+       char r[5];
+       int i, ret;
+
+       str = *((const char *const *)arg[0]);
+       if (str == NULL)
+               return (__printf_out(io, pi, "\"(null)\"", 8));
+       if (*str == '\0')
+               return (__printf_out(io, pi, "\"\"", 2));
+
+       for (i = 0, p = str; *p; p++)
+               if (isspace(*p) || *p == '\\' || *p == '"')
+                       i++;
+       if (!i) 
+               return (__printf_out(io, pi, str, strlen(str)));
+       
+       ret = __printf_out(io, pi, "\"", 1);
+       for (t = p = str; *p; p++) {
+               o = NULL;
+               if (*p == '\\')
+                       o = "\\\\";
+               else if (*p == '\n')
+                       o = "\\n";
+               else if (*p == '\r')
+                       o = "\\r";
+               else if (*p == '\t')
+                       o = "\\t";
+               else if (*p == ' ')
+                       o = " ";
+               else if (*p == '"')
+                       o = "\\\"";
+               else if (isspace(*p)) {
+                       sprintf(r, "\\%03o", *p);
+                       o = r;
+               } else
+                       continue;
+               if (p != t)
+                       ret += __printf_out(io, pi, t, p - t);
+               ret += __printf_out(io, pi, o, strlen(o));
+               t = p + 1;
+       }
+       if (p != t)
+               ret += __printf_out(io, pi, t, p - t);
+       ret += __printf_out(io, pi, "\"", 1);
+       __printf_flush(io);
+       return(ret);
+}