add dirname() function

SVN revision: 55530

legacy/evil/ChangeLog

@@ -1,3 +1,9 @@
+2010-12-12  Vincent Torri  <doursse at users dot sf dot net>
+
+	* src/lib/evil_libgen.c:
+	* src/lib/evil_libgen.h:
+	add dirname() function
+
 2010-12-12  Vincent Torri  <doursse at users dot sf dot net>
 
 	* src/lib/evil_unistd.c:

legacy/evil/src/lib/evil_libgen.c

@@ -7,6 +7,7 @@
 #include "Evil.h"
 
 char _evil_basename_buf[PATH_MAX];
+char _evil_dirname_buf[PATH_MAX];
 
 char *
 evil_basename(char *path)
@@ -15,28 +16,96 @@ evil_basename(char *path)
    char *p2;
    size_t length;
 
-   if (!path || !*path)
+   /* path must begin by "?:\" or "?:/" */
+   if ((!path) ||
+       (strlen(path) <= 3) ||
+       ((path[0] < 'a' || path[0] > 'z') && (path[0] < 'A' || path[0] > 'Z')) ||
+       (path[1] != ':') ||
+       ((path[2] != '/') && (path[2] != '\\')))
      {
-        memcpy(_evil_basename_buf, ".", 2);
+        memcpy(_evil_basename_buf, "C:\\", 4);
         return _evil_basename_buf;
      }
-   
+
+   /* '/' --> '\\' */
    length = strlen(path);
    p1 = strdup(path);
-   if (!p1) return NULL;
+   if (!p1)
+     {
+        memcpy(_evil_basename_buf, "C:\\", 4);
+        return _evil_basename_buf;
+     }
    p2 = p1;
    while (p2)
      {
         if (*p2 == '/') *p2 = '\\';
         p2++;
      }
-   if (p1[length - 1] =='\\') p1[--length] = '\0';
+
+   /* remove trailing backslashes */
+   p2 = p1 + (length - 1);
+   if (*p2 == '\\')
+     {
+       while (*p2 == '\\')
+         p2--;
+     }
+   *(p2 + 1) = '\0';
 
    p2 = strrchr(p1, '\\');
-   if (!p2) memcpy(_evil_basename_buf, p1, length + 1);
+   memcpy(_evil_basename_buf, p2 + 1, (p1 + length + 1) - p2);
-   else memcpy(_evil_basename_buf, p2 + 1, (p1 + length + 1) - p2);
 
    free(p1);
 
    return _evil_basename_buf;
 }
+
+char *
+evil_dirname(char *path)
+{
+   char *p1;
+   char *p2;
+   size_t length;
+
+   /* path must begin by "?:\" or "?:/" */
+   if ((!path) ||
+       (strlen(path) <= 3) ||
+       ((path[0] < 'a' || path[0] > 'z') && (path[0] < 'A' || path[0] > 'Z')) ||
+       (path[1] != ':') ||
+       ((path[2] != '/') && (path[2] != '\\')))
+     {
+        memcpy(_evil_dirname_buf, "C:\\", 4);
+        return _evil_dirname_buf;
+     }
+
+   /* '/' --> '\\' */
+   length = strlen(path);
+   p1 = strdup(path);
+   if (!p1)
+     {
+        memcpy(_evil_dirname_buf, "C:\\", 4);
+        return _evil_dirname_buf;
+     }
+   p2 = p1;
+   while (p2)
+     {
+        if (*p2 == '/') *p2 = '\\';
+        p2++;
+     }
+
+   /* remove trailing backslashes */
+   p2 = p1 + (length - 1);
+   if (*p2 == '\\')
+     {
+       while (*p2 == '\\')
+         p2--;
+     }
+   *(p2 + 1) = '\0';
+
+   p2 = strrchr(p1, '\\');
+   *p2 = '\0';
+   memcpy(_evil_dirname_buf, p1, strlen(p1) + 1);
+
+   free(p1);
+
+   return _evil_dirname_buf;
+}

legacy/evil/src/lib/evil_libgen.h

@@ -16,6 +16,10 @@ EAPI char *evil_basename(char *path);
 
 #define basename(p) evil_basename(p)
 
+EAPI char *evil_dirname(char *path);
+
+#define dirname(p) evil_dirname(p)
+
 
 /**
  * @}