Initial Alpine Version

1 files changed, 81 insertions, 0 deletions

diff --git a/imap/src/osdep/unix/scandir.c b/imap/src/osdep/unix/scandir.c
new file mode 100644
index 00000000..878343e8
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+++ b/imap/src/osdep/unix/scandir.c
@@ -0,0 +1,81 @@
+/* ========================================================================
+ * 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:	Scan directories
+ *
+ * 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:	1 August 1988
+ * Last Edited:	15 September 2006
+ */
+ 
+/* Emulator for BSD scandir() call
+ * Accepts: directory name
+ *	    destination pointer of names array
+ *	    selection function
+ *	    comparison function
+ * Returns: number of elements in the array or -1 if error
+ */
+
+int scandir (char *dirname,struct direct ***namelist,select_t select,
+	     compar_t compar)
+{
+  struct direct *p,*d,**names;
+  int nitems;
+  struct stat stb;
+  long nlmax;
+  DIR *dirp = opendir (dirname);/* open directory and get status poop */
+  if ((!dirp) || (fstat (dirp->dd_fd,&stb) < 0)) return -1;
+  nlmax = stb.st_size / 24;	/* guesstimate at number of files */
+  names = (struct direct **) fs_get (nlmax * sizeof (struct direct *));
+  nitems = 0;			/* initially none found */
+  while (d = readdir (dirp)) {	/* read directory item */
+				/* matches select criterion? */
+    if (select && !(*select) (d)) continue;
+				/* get size of direct record for this file */
+    p = (struct direct *) fs_get (DIR_SIZE (d));
+    p->d_ino = d->d_ino;	/* copy the poop */
+    strcpy (p->d_name,d->d_name);
+    if (++nitems >= nlmax) {	/* if out of space, try bigger guesstimate */
+      void *s = (void *) names;	/* stupid language */
+      nlmax *= 2;		/* double it */
+      fs_resize ((void **) &s,nlmax * sizeof (struct direct *));
+      names = (struct direct **) s;
+    }
+    names[nitems - 1] = p;	/* store this file there */
+  }
+  closedir (dirp);		/* done with directory */
+				/* sort if necessary */
+  if (nitems && compar) qsort (names,nitems,sizeof (struct direct *),compar);
+  *namelist = names;		/* return directory */
+  return nitems;		/* and size */
+}
+
+/* Alphabetic file name comparision
+ * Accepts: first candidate directory entry
+ *	    second candidate directory entry
+ * Returns: negative if d1 < d2, 0 if d1 == d2, postive if d1 > d2
+ */
+
+int alphasort (void *d1,void *d2)
+{
+  return strcmp ((*(struct direct **) d1)->d_name,
+		 (*(struct direct **) d2)->d_name);
+}