libbindle: adding bindle_encoded_char()

4 files changed, 52 insertions, 0 deletions

diff --git a/doc/mans/bindle_decode.3.in b/doc/mans/bindle_decode.3.in
index 44607c6..f46993f 100644
--- a/doc/mans/bindle_decode.3.in
+++ b/doc/mans/bindle_decode.3.in
@@ -51,6 +51,8 @@ Bindle Binaries Tools (libbindle, -lbindle)
 .sp
 .BI "ssize_t bindle_encoding_verify( int " method ", const char * " src ","
 .BI "           size_t " n " );"
+.sp
+.BI "int bindle_encoded_char( int " method ", char " c " );"
 
 .SH DESCRIPTION
 \fBbindle_decode\fR() decodes \fIn\fR bytes from \fIsrc\fR into \fIdst\fR
@@ -94,6 +96,9 @@ encode \fIn\fR bytes of data according to the method specified by
 .sp
 \fBbindle_encoding_verify\fR() verifies that \fIn\fR bytes of data in
 \fIsrc\fR are encoded according to encoding specified by \fImethod\fR.
+.sp
+\fBbindle_encoded_char\fR() returns the value of the encoded character \fIc\fR
+for \fImethod\fR.
 
 .SH RETURN VALUES
 If successful \fBbindle_decode\fR() and \fBbindle_encode\fR() return the
@@ -106,6 +111,10 @@ error occurs, errno is set and -1 is returned.
 .sp
 \fBbindle_encoding_verify\fR() returns 0 if the data is correctly encoded. If
 an error occurred, errno is set and -1 is returned.
+.sp
+\fBbindle_encoded_char\fR() returns the value of the specified character if
+\fIc\fR is a valid encoded character for \fImethod\fR or returns -1 if \fIc\fR
+is not a valid encoded character.
 
 .SH SEE ALSO
 .BR bindletools (3)
diff --git a/include/bindle.h b/include/bindle.h
index f7e16e3..aae49f5 100644
--- a/include/bindle.h
+++ b/include/bindle.h
@@ -338,6 +338,12 @@ bindle_encode_size(
          size_t                        n );
 
 
+_BINDLE_F int
+bindle_encoded_char(
+         int                           method,
+         char                          c );
+
+
 _BINDLE_F ssize_t
 bindle_encoding_verify(
          int                           method,
diff --git a/lib/libbindle/lencoding.c b/lib/libbindle/lencoding.c
index 4895ac0..8a3cc25 100644
--- a/lib/libbindle/lencoding.c
+++ b/lib/libbindle/lencoding.c
@@ -1300,6 +1300,42 @@ bindle_encode_size(
 }
 
 
+int
+bindle_encoded_char(
+         int                           method,
+         char                          c )
+{
+   unsigned char u = (unsigned char)c;
+   switch(method)
+   {
+      case BNDL_BASE32:
+      return(base32_vals[u]);
+
+      case BNDL_BASE32HEX:
+      return(base32hex_vals[u]);
+
+      case BNDL_BASE64:
+      return(base64_vals[u]);
+
+      case BNDL_CROCKFORD:
+      return(crockford_vals[u]);
+
+      case BNDL_HEX:
+      return(hex_vals[u]);
+
+      case BNDL_NONE:
+      return((int)u);
+
+      case BNDL_PCTENC:
+      return(pctenc_vals[u]);
+
+      default:
+      break;
+   };
+   return(-1);
+}
+
+
 ssize_t
 bindle_encoding_verify(
          int                           method,
diff --git a/lib/libbindle/libbindle.sym b/lib/libbindle/libbindle.sym
index e7c5b34..b23a6e2 100644
--- a/lib/libbindle/libbindle.sym
+++ b/lib/libbindle/libbindle.sym
@@ -52,6 +52,7 @@ bindle_decode
 bindle_decode_size
 bindle_encode
 bindle_encode_size
+bindle_encoded_char
 bindle_encoding_verify
 #
 # file functions