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-rw-r--r--imap/src/osdep/mac/nl_mac.c74
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diff --git a/imap/src/osdep/mac/nl_mac.c b/imap/src/osdep/mac/nl_mac.c
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+/* ========================================================================
+ * Copyright 1988-2006 University of Washington
+ *
+ * Licensed 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
+ *
+ *
+ * ========================================================================
+ */
+
+/*
+ * Program: Mac newline routines
+ *
+ * Author: Mark Crispin
+ * Networks and Distributed Computing
+ * Computing & Communications
+ * University of Washington
+ * Administration Building, AG-44
+ * Seattle, WA 98195
+ * Internet: MRC@CAC.Washington.EDU
+ *
+ * Date: 26 January 1992
+ * Last Edited: 30 August 2006
+ */
+
+/* Copy string with CRLF newlines
+ * Accepts: destination string
+ * pointer to size of destination string buffer
+ * source string
+ * length of source string
+ * Returns: length of copied string
+ */
+
+unsigned long strcrlfcpy (unsigned char **dst,unsigned long *dstl,
+ unsigned char *src,unsigned long srcl)
+{
+ long i,j;
+ unsigned char c,*d = src;
+ if (*dst) { /* destination provided? */
+ if ((i = srcl * 2) > *dstl) /* calculate worst-case situation */
+ for (i = j = srcl; j; --j) if (*d++ == '\015') i++;
+ /* flush destination buffer if too small */
+ if (i > *dstl) fs_give ((void **) dst);
+ }
+ /* make a new buffer if needed */
+ if (!*dst) *dst = (char *) fs_get ((*dstl = i) + 1);
+ d = *dst; /* destination string */
+ if (srcl) do { /* copy string */
+ c = *d++ = *src++; /* copy character */
+ /* append line feed to bare CR */
+ if ((c == '\015') && (*src != '\012')) *d++ = '\012';
+ } while (--srcl);
+ *d = '\0'; /* tie off destination */
+ return d - *dst; /* return length */
+}
+
+
+/* Length of string after strcrlfcpy applied
+ * Accepts: source string
+ * Returns: length of string
+ */
+
+unsigned long strcrlflen (STRING *s)
+{
+ unsigned long pos = GETPOS (s);
+ unsigned long i = SIZE (s);
+ unsigned long j = i;
+ while (j--) if ((SNX (s) == '\015') && ((CHR (s) != '\012') || !j)) i++;
+ SETPOS (s,pos); /* restore old position */
+ return i;
+}