*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
*/
static const char base64_alphabet[] =
- "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
+ "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
/**
* g_base64_encode_step:
* @save: Saved state between steps, initialize to 0
*
* Incrementally encode a sequence of binary data into its Base-64 stringified
- * representation. By calling this function multiple times you can convert
+ * representation. By calling this function multiple times you can convert
* data in chunks to avoid having to have the full encoded data in memory.
*
- * When all of the data has been converted you must call
+ * When all of the data has been converted you must call
* g_base64_encode_close() to flush the saved state.
*
* The output buffer must be large enough to fit all the data that will
* ((@len / 3 + 1) * 4 + 4) / 72 + 1 bytes of extra space.
*
* @break_lines is typically used when putting base64-encoded data in emails.
- * It breaks the lines at 72 columns instead of putting all of the text on
+ * It breaks the lines at 72 columns instead of putting all of the text on
* the same line. This avoids problems with long lines in the email system.
*
* Return value: The number of bytes of output that was written
* Since: 2.12
*/
gsize
-g_base64_encode_step (const guchar *in,
- gsize len,
- gboolean break_lines,
- gchar *out,
- gint *state,
- gint *save)
+g_base64_encode_step (const guchar *in,
+ gsize len,
+ gboolean break_lines,
+ gchar *out,
+ gint *state,
+ gint *save)
{
char *outptr;
const guchar *inptr;
-
+
g_return_val_if_fail (in != NULL, 0);
g_return_val_if_fail (out != NULL, 0);
g_return_val_if_fail (state != NULL, 0);
if (len <= 0)
return 0;
-
+
inptr = in;
outptr = out;
-
+
if (len + ((char *) save) [0] > 2)
{
const guchar *inend = in+len-2;
int c1, c2, c3;
int already;
-
+
already = *state;
-
+
switch (((char *) save) [0])
- {
- case 1:
- c1 = ((unsigned char *) save) [1];
+ {
+ case 1:
+ c1 = ((unsigned char *) save) [1];
goto skip1;
- case 2:
+ case 2:
c1 = ((unsigned char *) save) [1];
- c2 = ((unsigned char *) save) [2];
+ c2 = ((unsigned char *) save) [2];
goto skip2;
- }
-
- /*
- * yes, we jump into the loop, no i'm not going to change it,
- * it's beautiful!
+ }
+
+ /*
+ * yes, we jump into the loop, no i'm not going to change it,
+ * it's beautiful!
*/
while (inptr < inend)
- {
- c1 = *inptr++;
- skip1:
- c2 = *inptr++;
- skip2:
- c3 = *inptr++;
- *outptr++ = base64_alphabet [ c1 >> 2 ];
- *outptr++ = base64_alphabet [ c2 >> 4 |
- ((c1&0x3) << 4) ];
- *outptr++ = base64_alphabet [ ((c2 &0x0f) << 2) |
- (c3 >> 6) ];
- *outptr++ = base64_alphabet [ c3 & 0x3f ];
- /* this is a bit ugly ... */
- if (break_lines && (++already) >= 19)
- {
- *outptr++ = '\n';
- already = 0;
- }
- }
-
+ {
+ c1 = *inptr++;
+ skip1:
+ c2 = *inptr++;
+ skip2:
+ c3 = *inptr++;
+ *outptr++ = base64_alphabet [ c1 >> 2 ];
+ *outptr++ = base64_alphabet [ c2 >> 4 |
+ ((c1&0x3) << 4) ];
+ *outptr++ = base64_alphabet [ ((c2 &0x0f) << 2) |
+ (c3 >> 6) ];
+ *outptr++ = base64_alphabet [ c3 & 0x3f ];
+ /* this is a bit ugly ... */
+ if (break_lines && (++already) >= 19)
+ {
+ *outptr++ = '\n';
+ already = 0;
+ }
+ }
+
((char *)save)[0] = 0;
len = 2 - (inptr - inend);
*state = already;
}
-
+
if (len>0)
{
char *saveout;
-
+
/* points to the slot for the next char to save */
saveout = & (((char *)save)[1]) + ((char *)save)[0];
-
+
/* len can only be 0 1 or 2 */
switch(len)
- {
- case 2: *saveout++ = *inptr++;
- case 1: *saveout++ = *inptr++;
- }
+ {
+ case 2: *saveout++ = *inptr++;
+ case 1: *saveout++ = *inptr++;
+ }
((char *)save)[0] += len;
}
-
+
return outptr - out;
}
*/
gsize
g_base64_encode_close (gboolean break_lines,
- gchar *out,
- gint *state,
- gint *save)
+ gchar *out,
+ gint *state,
+ gint *save)
{
int c1, c2;
char *outptr = out;
c1 = ((unsigned char *) save) [1];
c2 = ((unsigned char *) save) [2];
-
+
switch (((char *) save) [0])
{
case 2:
}
if (break_lines)
*outptr++ = '\n';
-
+
*save = 0;
*state = 0;
-
+
return outptr - out;
}
* representation.
*
* Return value: a newly allocated, zero-terminated Base-64 encoded
- * string representing @data. The returned string must
+ * string representing @data. The returned string must
* be freed with g_free().
*
* Since: 2.12
*/
gchar *
-g_base64_encode (const guchar *data,
+g_base64_encode (const guchar *data,
gsize len)
{
gchar *out;
};
/**
- * g_base64_decode_step:
+ * g_base64_decode_step:
* @in: binary input data
* @len: max length of @in data to decode
* @out: output buffer
* @save: Saved state between steps, initialize to 0
*
* Incrementally decode a sequence of binary data from its Base-64 stringified
- * representation. By calling this function multiple times you can convert
+ * representation. By calling this function multiple times you can convert
* data in chunks to avoid having to have the full encoded data in memory.
*
* The output buffer must be large enough to fit all the data that will
* be written to it. Since base64 encodes 3 bytes in 4 chars you need
* at least: (@len / 4) * 3 + 3 bytes (+ 3 may be needed in case of non-zero
* state).
- *
+ *
* Return value: The number of bytes of output that was written
*
* Since: 2.12
**/
gsize
-g_base64_decode_step (const gchar *in,
- gsize len,
- guchar *out,
- gint *state,
- guint *save)
+g_base64_decode_step (const gchar *in,
+ gsize len,
+ guchar *out,
+ gint *state,
+ guint *save)
{
const guchar *inptr;
guchar *outptr;
if (len <= 0)
return 0;
-
+
inend = (const guchar *)in+len;
outptr = out;
-
+
/* convert 4 base64 bytes to 3 normal bytes */
v=*save;
i=*state;
c = *inptr++;
rank = mime_base64_rank [c];
if (rank != 0xff)
- {
- last[1] = last[0];
- last[0] = c;
- v = (v<<6) | rank;
- i++;
- if (i==4)
- {
- *outptr++ = v>>16;
- if (last[1] != '=')
- *outptr++ = v>>8;
- if (last[0] != '=')
- *outptr++ = v;
- i=0;
- }
- }
+ {
+ last[1] = last[0];
+ last[0] = c;
+ v = (v<<6) | rank;
+ i++;
+ if (i==4)
+ {
+ *outptr++ = v>>16;
+ if (last[1] != '=')
+ *outptr++ = v>>8;
+ if (last[0] != '=')
+ *outptr++ = v;
+ i=0;
+ }
+ }
}
-
+
*save = v;
*state = i;
-
+
return outptr - out;
}
*/
guchar *
g_base64_decode (const gchar *text,
- gsize *out_len)
+ gsize *out_len)
{
guchar *ret;
gsize input_length;
gint state = 0;
guint save = 0;
-
+
g_return_val_if_fail (text != NULL, NULL);
g_return_val_if_fail (out_len != NULL, NULL);
/* We can use a smaller limit here, since we know the saved state is 0,
+1 used to avoid calling g_malloc0(0), and hence retruning NULL */
ret = g_malloc0 ((input_length / 4) * 3 + 1);
-
+
*out_len = g_base64_decode_step (text, input_length, ret, &state, &save);
-
- return ret;
+
+ return ret;
}
-
+
/**
* g_base64_decode_inplace:
* @text: zero-terminated string with base64 text to decode
{
gint input_length, state = 0;
guint save = 0;
-
+
g_return_val_if_fail (text != NULL, NULL);
g_return_val_if_fail (out_len != NULL, NULL);
g_return_val_if_fail (input_length > 1, NULL);
*out_len = g_base64_decode_step (text, input_length, (guchar *) text, &state, &save);
-
- return (guchar *) text;
+
+ return (guchar *) text;
}
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
G_BEGIN_DECLS
-gsize g_base64_encode_step (const guchar *in,
- gsize len,
- gboolean break_lines,
- gchar *out,
- gint *state,
- gint *save);
-gsize g_base64_encode_close (gboolean break_lines,
- gchar *out,
- gint *state,
- gint *save);
-gchar* g_base64_encode (const guchar *data,
- gsize len) G_GNUC_MALLOC;
-gsize g_base64_decode_step (const gchar *in,
- gsize len,
- guchar *out,
- gint *state,
- guint *save);
-guchar *g_base64_decode (const gchar *text,
- gsize *out_len) G_GNUC_MALLOC;
-guchar *g_base64_decode_inplace (gchar *text,
- gsize *out_len);
+gsize g_base64_encode_step (const guchar *in,
+ gsize len,
+ gboolean break_lines,
+ gchar *out,
+ gint *state,
+ gint *save);
+gsize g_base64_encode_close (gboolean break_lines,
+ gchar *out,
+ gint *state,
+ gint *save);
+gchar* g_base64_encode (const guchar *data,
+ gsize len) G_GNUC_MALLOC;
+gsize g_base64_decode_step (const gchar *in,
+ gsize len,
+ guchar *out,
+ gint *state,
+ guint *save);
+guchar *g_base64_decode (const gchar *text,
+ gsize *out_len) G_GNUC_MALLOC;
+guchar *g_base64_decode_inplace (gchar *text,
+ gsize *out_len);
G_END_DECLS
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