[libsoup] Add macros for checking character classes. Eg, soup_char_is_token()

[Dan Winship <danw src gnome org>]

commit 6ce2bb5d1e4dfc1429567cc6d2b5232f421af2b3
Author: Dan Winship <danw gnome org>
Date:   Tue Apr 6 11:56:04 2010 -0400

    Add macros for checking character classes. Eg, soup_char_is_token()
    
    Move the existing URI character class table from soup-uri.c to
    soup-misc.c, and update for that. Also add soup_char_is_token(), to
    determine if a character can be used in a token or not.

 libsoup/soup-misc.c |   59 +++++++++++++++++++++++++++++++++++++++++++++++++++
 libsoup/soup-misc.h |   15 +++++++++++++
 libsoup/soup-uri.c  |   29 ++----------------------
 3 files changed, 77 insertions(+), 26 deletions(-)
---
diff --git a/libsoup/soup-misc.c b/libsoup/soup-misc.c
index 5e99476..9a9740b 100644
--- a/libsoup/soup-misc.c
+++ b/libsoup/soup-misc.c
@@ -164,3 +164,62 @@ soup_add_timeout (GMainContext *async_context,
 	g_source_unref (source);
 	return source;
 }
+
+/* 00 URI_UNRESERVED
+ * 01 URI_PCT_ENCODED
+ * 02 URI_GEN_DELIMS
+ * 04 URI_SUB_DELIMS
+ * 08 HTTP_SEPARATOR
+ * 10 HTTP_CTL
+ */
+const char soup_char_attributes[] = {
+	/* 0x00 - 0x07 */
+	0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11,
+	/* 0x08 - 0x0f */
+	0x11, 0x19, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11,
+	/* 0x10 - 0x17 */
+	0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11,
+	/* 0x18 - 0x1f */
+	0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11,
+	/*  !"#$%&' */
+	0x09, 0x04, 0x09, 0x02, 0x04, 0x01, 0x04, 0x04,
+	/* ()*+,-./ */
+	0x0c, 0x0c, 0x04, 0x04, 0x0c, 0x00, 0x00, 0x0a,
+	/* 01234567 */
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	/* 89:;<=>? */
+	0x00, 0x00, 0x0a, 0x0c, 0x09, 0x0a, 0x09, 0x0a,
+	/* @ABCDEFG */
+	0x0a, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	/* HIJKLMNO */
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	/* PQRSTUVW */
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	/* XYZ[\]^_ */
+	0x00, 0x00, 0x00, 0x0a, 0x09, 0x0a, 0x01, 0x00,
+	/* `abcdefg */
+	0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	/* hijklmno */
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	/* pqrstuvw */
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	/* xyz{|}~  */
+	0x00, 0x00, 0x00, 0x09, 0x01, 0x09, 0x00, 0x11,
+	/* 0x80 - 0xFF */
+	0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+	0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+	0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+	0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+	0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+	0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+	0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+	0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+	0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+	0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+	0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+	0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+	0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+	0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+	0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+	0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01
+};
diff --git a/libsoup/soup-misc.h b/libsoup/soup-misc.h
index 8802340..9e7f00d 100644
--- a/libsoup/soup-misc.h
+++ b/libsoup/soup-misc.h
@@ -35,6 +35,21 @@ gboolean           soup_str_case_equal       (gconstpointer v1,
 
 #define _SOUP_ATOMIC_INTERN_STRING(variable, value) ((const char *)(g_atomic_pointer_get (&(variable)) ? (variable) : (g_atomic_pointer_set (&(variable), (gpointer)g_intern_static_string (value)), (variable))))
 
+/* character classes */
+
+extern const char soup_char_attributes[];
+#define SOUP_CHAR_URI_PERCENT_ENCODED 0x01
+#define SOUP_CHAR_URI_GEN_DELIMS      0x02
+#define SOUP_CHAR_URI_SUB_DELIMS      0x04
+#define SOUP_CHAR_HTTP_SEPARATOR      0x08
+#define SOUP_CHAR_HTTP_CTL            0x10
+
+#define soup_char_is_uri_percent_encoded(ch) (soup_char_attributes[(guchar)ch] & SOUP_CHAR_URI_PERCENT_ENCODED)
+#define soup_char_is_uri_gen_delims(ch)      (soup_char_attributes[(guchar)ch] & SOUP_CHAR_URI_GEN_DELIMS)
+#define soup_char_is_uri_sub_delims(ch)      (soup_char_attributes[(guchar)ch] & SOUP_CHAR_URI_SUB_DELIMS)
+#define soup_char_is_uri_unreserved(ch)      (!(soup_char_attributes[(guchar)ch] & (SOUP_CHAR_URI_PERCENT_ENCODED | SOUP_CHAR_URI_GEN_DELIMS | SOUP_CHAR_URI_SUB_DELIMS)))
+#define soup_char_is_token(ch)               (!(soup_char_attributes[(guchar)ch] & (SOUP_CHAR_HTTP_SEPARATOR | SOUP_CHAR_HTTP_CTL)))
+
 /* SSL stuff */
 
 extern const gboolean soup_ssl_supported;
diff --git a/libsoup/soup-uri.c b/libsoup/soup-uri.c
index d82fe29..792c6dc 100644
--- a/libsoup/soup-uri.c
+++ b/libsoup/soup-uri.c
@@ -559,37 +559,14 @@ soup_uri_free (SoupURI *uri)
 	g_slice_free (SoupURI, uri);
 }
 
-/* From RFC 3986 */
-#define SOUP_URI_UNRESERVED  0
-#define SOUP_URI_PCT_ENCODED 1
-#define SOUP_URI_GEN_DELIMS  2
-#define SOUP_URI_SUB_DELIMS  4
-static const char uri_encoded_char[] = {
-	1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,  /* 0x00 - 0x0f */
-	1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,  /* 0x10 - 0x1f */
-	1, 4, 1, 2, 4, 1, 4, 4, 4, 4, 4, 4, 4, 0, 0, 2,  /*  !"#$%&'()*+,-./ */
-	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 4, 1, 4, 1, 2,  /* 0123456789:;<=>? */
-	2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,  /* @ABCDEFGHIJKLMNO */
-	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 1, 2, 1, 0,  /* PQRSTUVWXYZ[\]^_ */
-	1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,  /* `abcdefghijklmno */
-	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 0, 1,  /* pqrstuvwxyz{|}~  */
-	1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
-	1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
-	1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
-	1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
-	1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
-	1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
-	1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
-	1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1
-};
-
 static void
 append_uri_encoded (GString *str, const char *in, const char *extra_enc_chars)
 {
 	const unsigned char *s = (const unsigned char *)in;
 
 	while (*s) {
-		if ((uri_encoded_char[*s] & (SOUP_URI_PCT_ENCODED | SOUP_URI_GEN_DELIMS)) ||
+		if (soup_char_is_uri_percent_encoded (*s) ||
+		    soup_char_is_uri_gen_delims (*s) ||
 		    (extra_enc_chars && strchr (extra_enc_chars, *s)))
 			g_string_append_printf (str, "%%%02X", (int)*s++);
 		else
@@ -689,7 +666,7 @@ uri_normalized_copy (const char *part, int length,
 			}
 
 			c = HEXCHAR (s);
-			if (uri_encoded_char[c] == SOUP_URI_UNRESERVED ||
+			if (soup_char_is_uri_unreserved (c) ||
 			    (unescape_extra && strchr (unescape_extra, c))) {
 				*d++ = c;
 				s += 2;