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Add base64 docs

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This commit is contained in:
Matthias Clasen 2006-04-05 03:19:30 +00:00
parent 5cf8f1d4a8
commit 6324ed6b34
9 changed files with 178 additions and 49 deletions
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6
ChangeLog
View File

@ -1,3 +1,9 @@
2006-04-04 Matthias Clasen <mclasen@redhat.com>
* glib/glib.symbols:
* glib/gbase64.[hc]: Add G_GNUC_MALLOC where
appropriate, use glib types.
2006-04-04 Alexander Larsson <alexl@redhat.com>
* glib/Makefile.am:

6
ChangeLog.pre-2-12
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@ -1,3 +1,9 @@
2006-04-04 Matthias Clasen <mclasen@redhat.com>
* glib/glib.symbols:
* glib/gbase64.[hc]: Add G_GNUC_MALLOC where
appropriate, use glib types.
2006-04-04 Alexander Larsson <alexl@redhat.com>
* glib/Makefile.am:

5
docs/reference/ChangeLog
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@ -1,3 +1,8 @@
2006-04-04 Matthias Clasen <mclasen@redhat.com>
* glib/glib-sections.txt:
* glib/glib-docs.sgml: Add Base64 section
2006-04-03 Matthias Clasen <mclasen@redhat.com>
* gobject/tmpl/objects.sgml: Add some verbiage to

2
docs/reference/glib/glib-docs.sgml
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@ -58,6 +58,7 @@
<!ENTITY glib-Markup SYSTEM "xml/markup.xml">
<!ENTITY glib-Keyfile SYSTEM "xml/keyfile.xml">
<!ENTITY glib-Bookmarkfile SYSTEM "xml/bookmarkfile.xml">
<!ENTITY glib-Base64 SYSTEM "xml/base64.xml">
<!ENTITY glib-i18n SYSTEM "xml/i18n.xml">
<!ENTITY glib-Version SYSTEM "xml/version.xml">
@ -135,6 +136,7 @@ synchronize their operation.
&glib-String-Utility-Functions;
&glib-Character-Set-Conversion;
&glib-Unicode-Manipulation;
&glib-Base64;
&glib-i18n;
&glib-Date-and-Time-Functions;
&glib-Random-Numbers;

10
docs/reference/glib/glib-sections.txt
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@ -2305,3 +2305,13 @@ g_strip_context
<SUBSECTION>
g_get_language_names
</SECTION>
<SECTION>
<TITLE>Base64 Encoding</TITLE>
<FILE>base64</FILE>
g_base64_encode_step
g_base64_encode_close
g_base64_encode
g_base64_decode_step
g_base64_decode
</SECTION>

95
docs/reference/glib/tmpl/base64.sgml Normal file
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@ -0,0 +1,95 @@
<!-- ##### SECTION Title ##### -->
Base64 Encoding
<!-- ##### SECTION Short_Description ##### -->
encodes and decodes data in Base64 format
<!-- ##### SECTION Long_Description ##### -->
<para>
Base64 is an encoding that allows to encode a sequence of arbitrary
bytes as a sequence of printable ASCII characters. For the definition
of Base64, see <ulink url="http://www.ietf.org/rfc/rfc1421.txt">RFC
1421</ulink> or <ulink url="http://www.ietf.org/rfc/rfc2045.txt">RFC
2045</ulink>. Base64 is most commonly used as a MIME transfer encoding
for email.
</para>
<para>
GLib supports incremental encoding using g_base64_encode_step() and
g_base64_encode_close(). Incremental decoding can be done with
g_base64_decode_step() and g_base64_decode_close(). To encode or
decode data in one go, use g_base64_encode() of g_base64_decode().
</para>
<para>
Support for Base64 encoding has been added in GLib 2.12.
</para>
<!-- ##### SECTION See_Also ##### -->
<para>
</para>
<!-- ##### SECTION Stability_Level ##### -->
<!-- ##### FUNCTION g_base64_encode_step ##### -->
<para>
</para>
@in:
@len:
@break_lines:
@out:
@state:
@save:
@Returns:
<!-- ##### FUNCTION g_base64_encode_close ##### -->
<para>
</para>
@break_lines:
@out:
@state:
@save:
@Returns:
<!-- ##### FUNCTION g_base64_encode ##### -->
<para>
</para>
@data:
@len:
@Returns:
<!-- ##### FUNCTION g_base64_decode_step ##### -->
<para>
</para>
@in:
@len:
@out:
@state:
@save:
@Returns:
<!-- ##### FUNCTION g_base64_decode ##### -->
<para>
</para>
@text:
@out_len:
@Returns:

75
glib/gbase64.c
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@ -66,12 +66,12 @@ static const char base64_alphabet[] =
* Since: 2.12
*/
gsize
g_base64_encode_step (const guchar *in,
gsize len,
gboolean break_lines,
char *out,
int *state,
int *save)
g_base64_encode_step (const guchar *in,
gsize len,
gboolean break_lines,
gchar *out,
gint *state,
gint *save)
{
char *outptr;
const guchar *inptr;
@ -91,10 +91,14 @@ g_base64_encode_step (const guchar *in,
already = *state;
switch (((char *) save) [0])
{
case 1: c1 = ((unsigned char *) save) [1]; goto skip1;
case 2: c1 = ((unsigned char *) save) [1];
c2 = ((unsigned char *) save) [2]; goto skip2;
{
case 1:
c1 = ((unsigned char *) save) [1];
goto skip1;
case 2:
c1 = ((unsigned char *) save) [1];
c2 = ((unsigned char *) save) [2];
goto skip2;
}
/*
@ -115,15 +119,15 @@ g_base64_encode_step (const guchar *in,
(c3 >> 6) ];
*outptr++ = base64_alphabet [ c3 & 0x3f ];
/* this is a bit ugly ... */
if (break_lines && (++already)>=19)
if (break_lines && (++already) >= 19)
{
*outptr++='\n';
*outptr++ = '\n';
already = 0;
}
}
((char *)save)[0] = 0;
len = 2-(inptr-inend);
len = 2 - (inptr - inend);
*state = already;
}
@ -140,10 +144,10 @@ g_base64_encode_step (const guchar *in,
case 2: *saveout++ = *inptr++;
case 1: *saveout++ = *inptr++;
}
((char *)save)[0]+=len;
((char *)save)[0] += len;
}
return outptr-out;
return outptr - out;
}
/**
@ -160,10 +164,10 @@ g_base64_encode_step (const guchar *in,
* Since: 2.12
*/
gsize
g_base64_encode_close (gboolean break_lines,
char *out,
int *state,
int *save)
g_base64_encode_close (gboolean break_lines,
gchar *out,
gint *state,
gint *save)
{
int c1, c2;
char *outptr = out;
@ -192,7 +196,7 @@ g_base64_encode_close (gboolean break_lines,
*save = 0;
*state = 0;
return outptr-out;
return outptr - out;
}
/**
@ -208,12 +212,13 @@ g_base64_encode_close (gboolean break_lines,
*
* Since: 2.12
*/
char *
g_base64_encode (const guchar *data, gsize len)
gchar *
g_base64_encode (const guchar *data,
gsize len)
{
char *out;
int state = 0, outlen;
int save = 0;
gchar *out;
gint state = 0, outlen;
gint save = 0;
/* We can use a smaller limit here, since we know the saved state is 0 */
out = g_malloc (len * 4 / 3 + 4);
@ -223,7 +228,7 @@ g_base64_encode (const guchar *data, gsize len)
&state,
&save);
out[outlen] = '\0';
return (char *) out;
return (gchar *) out;
}
static const unsigned char mime_base64_rank[256] = {
@ -246,7 +251,7 @@ static const unsigned char mime_base64_rank[256] = {
};
/**
* g_base64_decode_step: decode a chunk of base64 encoded data
* g_base64_decode_step:
* @in: binary input data
* @len: max length of @in data to decode
* @out: output buffer
@ -266,11 +271,11 @@ static const unsigned char mime_base64_rank[256] = {
* Since: 2.12
**/
gsize
g_base64_decode_step (const char *in,
gsize len,
guchar *out,
int *state,
guint *save)
g_base64_decode_step (const gchar *in,
gsize len,
guchar *out,
gint *state,
guint *save)
{
const guchar *inptr;
guchar *outptr;
@ -337,11 +342,11 @@ g_base64_decode_step (const char *in,
* Since: 2.12
*/
guchar *
g_base64_decode (const char *text,
gsize *out_len)
g_base64_decode (const gchar *text,
gsize *out_len)
{
guchar *ret;
int inlen, state = 0;
gint inlen, state = 0;
guint save = 0;
inlen = strlen (text);

24
glib/gbase64.h
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@ -28,22 +28,22 @@ G_BEGIN_DECLS
gsize g_base64_encode_step (const guchar *in,
gsize len,
gboolean break_lines,
char *out,
int *state,
int *save);
gchar *out,
gint *state,
gint *save);
gsize g_base64_encode_close (gboolean break_lines,
char *out,
int *state,
int *save);
char * g_base64_encode (const guchar *data,
gsize len);
gsize g_base64_decode_step (const char *in,
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,
int *state,
gint *state,
guint *save);
guchar *g_base64_decode (const char *text,
gsize *out_len);
guchar *g_base64_decode (const gchar *text,
gsize *out_len) G_GNUC_MALLOC;
G_END_DECLS

4
glib/glib.symbols
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@ -107,9 +107,9 @@ g_on_error_stack_trace
#if IN_FILE(__G_BASE64_C__)
g_base64_encode_step
g_base64_encode_close
g_base64_encode
g_base64_encode G_GNUC_MALLOC
g_base64_decode_step
g_base64_decode
g_base64_decode G_GNUC_MALLOC
#endif
#endif