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-rw-r--r--epan/charsets.c203
-rw-r--r--epan/charsets.h52
2 files changed, 255 insertions, 0 deletions
diff --git a/epan/charsets.c b/epan/charsets.c
index 2987ef8239..d13346320e 100644
--- a/epan/charsets.c
+++ b/epan/charsets.c
@@ -26,6 +26,10 @@
#include <glib.h>
+#include <epan/proto.h>
+#include <epan/tvbuff.h>
+#include <epan/value_string.h>
+
#include "charsets.h"
/*
@@ -216,3 +220,202 @@ const gunichar2 charset_table_cp1250[0x80] = {
0x0111, 0x0144, 0x0148, 0x00f3, 0x00f4, 0x0151, 0x00f6, 0x00f7, /* 0xF0 - */
0x0159, 0x016f, 0x00fa, 0x0171, 0x00fc, 0x00fd, 0x0163, 0x02d9, /* - 0xFF */
};
+
+
+static dvb_encoding_e
+dvb_analyze_string_charset0(guint8 byte0)
+{
+ switch (byte0) {
+ case 0x01:
+ return DVB_ENCODING_ISO_8859_5;
+ case 0x02:
+ return DVB_ENCODING_ISO_8859_6;
+ case 0x03:
+ return DVB_ENCODING_ISO_8859_7;
+ case 0x04:
+ return DVB_ENCODING_ISO_8859_8;
+ case 0x05:
+ return DVB_ENCODING_ISO_8859_9;
+ case 0x06:
+ return DVB_ENCODING_ISO_8859_10;
+ case 0x07:
+ return DVB_ENCODING_ISO_8859_11;
+ case 0x08:
+ return DVB_ENCODING_RESERVED; /* was reserved for ISO-8859-12 */
+ case 0x09: /* 0x09 */
+ return DVB_ENCODING_ISO_8859_13;
+ case 0x0A: /* 0x0A */
+ return DVB_ENCODING_ISO_8859_14;
+ case 0x0B: /* 0x0B */
+ return DVB_ENCODING_ISO_8859_15;
+
+ /* XXX 0x11 ... 0x15 */
+
+ default:
+ return DVB_ENCODING_UNKNOWN;
+ }
+}
+
+static dvb_encoding_e
+dvb_analyze_string_charset0_10(guint16 byte12)
+{
+ switch (byte12) {
+ case 0x0000:
+ return DVB_ENCODING_RESERVED;
+ case 0x0001:
+ return DVB_ENCODING_EXT_ISO_8859_1;
+ case 0x0002:
+ return DVB_ENCODING_EXT_ISO_8859_2;
+ case 0x0003:
+ return DVB_ENCODING_EXT_ISO_8859_3;
+ case 0x0004:
+ return DVB_ENCODING_EXT_ISO_8859_4;
+ case 0x0005:
+ return DVB_ENCODING_EXT_ISO_8859_5;
+ case 0x0006:
+ return DVB_ENCODING_EXT_ISO_8859_6;
+ case 0x0007:
+ return DVB_ENCODING_EXT_ISO_8859_7;
+ case 0x0008:
+ return DVB_ENCODING_EXT_ISO_8859_8;
+ case 0x0009:
+ return DVB_ENCODING_EXT_ISO_8859_9;
+ case 0x000A:
+ return DVB_ENCODING_EXT_ISO_8859_10;
+ case 0x000B:
+ return DVB_ENCODING_EXT_ISO_8859_11;
+ case 0x000C:
+ return DVB_ENCODING_RESERVED;
+ case 0x000D:
+ return DVB_ENCODING_EXT_ISO_8859_13;
+ case 0x000E:
+ return DVB_ENCODING_EXT_ISO_8859_14;
+ case 0x000F:
+ return DVB_ENCODING_EXT_ISO_8859_15;
+
+ default: /* 0x10 XX XX */
+ return DVB_ENCODING_UNKNOWN;
+ }
+}
+
+static dvb_encoding_e
+dvb_analyze_string_charset0_1F(guint8 byte1)
+{
+ /* http://www.dvbservices.com/identifiers/encoding_type_id */
+
+ switch (byte1) {
+ case 0x00: /* 0x1F 0x00 */
+ return DVB_ENCODING_RESERVED;
+ case 0x01:
+ case 0x02:
+ case 0x03:
+ case 0x04:
+ /* XXX: BBC */
+ return DVB_ENCODING_RESERVED;
+ case 0x05:
+ case 0x06:
+ /* XXX: Malaysian Technical Standards Forum Bhd */
+ return DVB_ENCODING_RESERVED;
+
+ default: /* 0x1F XX */
+ return DVB_ENCODING_RESERVED;
+ }
+}
+
+
+guint
+dvb_analyze_string_charset(tvbuff_t *tvb, int offset, int length, dvb_encoding_e *encoding)
+{
+ if (length >= 1) {
+ guint8 byte0 = tvb_get_guint8(tvb, offset + 0);
+
+ if (byte0 >= 0x20) {
+ /* the first byte is a normal character, not the number of a character table */
+ *encoding = DVB_ENCODING_LATIN;
+ return 0;
+
+ } else if (byte0 == 0x1F) {
+ if (length >= 2) {
+ *encoding = dvb_analyze_string_charset0_1F(tvb_get_guint8(tvb, offset + 1));
+ return 2;
+ }
+ *encoding = DVB_ENCODING_INVALID;
+ return 1;
+
+ } else if (byte0 >= 0x16) { /* 16 ... 1E */
+ *encoding = DVB_ENCODING_RESERVED;
+ return 1;
+
+ } else if (byte0 == 0x10) {
+ if (length >= 3) {
+ *encoding = dvb_analyze_string_charset0_10(tvb_get_ntohs(tvb, offset + 1));
+ return 3;
+ }
+ *encoding = DVB_ENCODING_INVALID;
+ return 1;
+
+ } else if ((byte0 >= 0x0C && byte0 <= 0x0F)) {
+ *encoding = DVB_ENCODING_RESERVED;
+ return 1;
+ } else {
+ *encoding = dvb_analyze_string_charset0(byte0);
+ return 1;
+ }
+ } else
+ *encoding = DVB_ENCODING_LATIN;
+
+ return 0;
+}
+
+
+guint
+dvb_enc_to_item_enc(dvb_encoding_e encoding)
+{
+ /* XXX: take ISO control codes into account,
+ e.g. 0x86 - turn emphasis on ; 0x87 - turn emphasis off */
+
+ switch (encoding) {
+ case DVB_ENCODING_EXT_ISO_8859_2:
+ return ENC_ISO_8859_2 | ENC_NA;
+
+ default: /* not supported */
+ return ENC_ASCII | ENC_NA;
+ }
+}
+
+
+const value_string dvb_string_encoding_vals[] = {
+ { DVB_ENCODING_INVALID, "Incorrect length for encoding" },
+ { DVB_ENCODING_RESERVED, "Reserved for future use" },
+ { DVB_ENCODING_UNKNOWN, "Value not specified by spec" },
+
+ { DVB_ENCODING_LATIN, "Latin (default table)" },
+
+ { DVB_ENCODING_ISO_8859_5, "ISO/IEC 8859-5 (Latin/Cyrillic)" },
+ { DVB_ENCODING_ISO_8859_6, "ISO/IEC 8859-6 (Latin/Arabic)" },
+ { DVB_ENCODING_ISO_8859_7, "ISO/IEC 8859-7 (Latin/Greek)" },
+ { DVB_ENCODING_ISO_8859_8, "ISO/IEC 8859-8 (Latin/Hebrew)" },
+ { DVB_ENCODING_ISO_8859_9, "ISO/IEC 8859-9 (West European & Turkish)" },
+ { DVB_ENCODING_ISO_8859_10, "ISO/IEC 8859-10 (North European)" },
+ { DVB_ENCODING_ISO_8859_11, "ISO/IEC 8859-11 (Thai)" },
+ { DVB_ENCODING_ISO_8859_13, "ISO/IEC 8859-13 (Baltic)" },
+ { DVB_ENCODING_ISO_8859_14, "ISO/IEC 8859-14 (Celtic)" },
+ { DVB_ENCODING_ISO_8859_15, "ISO/IEC 8859-15 (West European)" },
+
+ { DVB_ENCODING_EXT_ISO_8859_1, "ISO/IEC 8859-1 (West European)" },
+ { DVB_ENCODING_EXT_ISO_8859_2, "ISO/IEC 8859-2 (East European)" },
+ { DVB_ENCODING_EXT_ISO_8859_3, "ISO/IEC 8859-3 (South European)" },
+ { DVB_ENCODING_EXT_ISO_8859_4, "ISO/IEC 8859-4 (North and North-East European)" },
+ { DVB_ENCODING_EXT_ISO_8859_5, "ISO/IEC 8859-5 (Latin/Cyrillic)" },
+ { DVB_ENCODING_EXT_ISO_8859_6, "ISO/IEC 8859-6 (Latin/Arabic)" },
+ { DVB_ENCODING_EXT_ISO_8859_7, "ISO/IEC 8859-7 (Latin/Greek)" },
+ { DVB_ENCODING_EXT_ISO_8859_8, "ISO/IEC 8859-8 (Latin/Hebrew)" },
+ { DVB_ENCODING_EXT_ISO_8859_9, "ISO/IEC 8859-9 (West European & Turkish)" },
+ { DVB_ENCODING_EXT_ISO_8859_10, "ISO/IEC 8859-10 (North European)" },
+ { DVB_ENCODING_EXT_ISO_8859_11, "ISO/IEC 8859-11 (Thai)" },
+ { DVB_ENCODING_EXT_ISO_8859_13, "ISO/IEC 8859-13 (Baltic)" },
+ { DVB_ENCODING_EXT_ISO_8859_14, "ISO/IEC 8859-14 (Celtic)" },
+ { DVB_ENCODING_EXT_ISO_8859_15, "ISO/IEC 8859-15 (West European)" },
+
+ { 0, NULL }
+};
diff --git a/epan/charsets.h b/epan/charsets.h
index 7997ffefa7..42747518af 100644
--- a/epan/charsets.h
+++ b/epan/charsets.h
@@ -26,10 +26,62 @@
#include "ws_symbol_export.h"
+#include <epan/tvbuff.h>
+#include <epan/value_string.h>
+
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
+typedef enum {
+ DVB_ENCODING_INVALID = -3, /* length invalid */
+ DVB_ENCODING_RESERVED = -2, /* reserved by spec */
+
+ DVB_ENCODING_UNKNOWN = -1, /* not defined by spec */
+
+ DVB_ENCODING_LATIN = 0,
+ DVB_ENCODING_ISO_8859_5,
+ DVB_ENCODING_ISO_8859_6,
+ DVB_ENCODING_ISO_8859_7,
+ DVB_ENCODING_ISO_8859_8,
+ DVB_ENCODING_ISO_8859_9,
+ DVB_ENCODING_ISO_8859_10,
+ DVB_ENCODING_ISO_8859_11,
+ /* 0x08 is reserved */
+ DVB_ENCODING_ISO_8859_13 = 9,
+ DVB_ENCODING_ISO_8859_14,
+ DVB_ENCODING_ISO_8859_15,
+
+ /* TODO: 0x11...0x15 */
+
+ DVB_ENCODING_EXT_BASE = 0x100000,
+ DVB_ENCODING_EXT_ISO_8859_1 = DVB_ENCODING_EXT_BASE | 1,
+ DVB_ENCODING_EXT_ISO_8859_2 = DVB_ENCODING_EXT_BASE | 2,
+ DVB_ENCODING_EXT_ISO_8859_3 = DVB_ENCODING_EXT_BASE | 3,
+ DVB_ENCODING_EXT_ISO_8859_4 = DVB_ENCODING_EXT_BASE | 4,
+ DVB_ENCODING_EXT_ISO_8859_5 = DVB_ENCODING_EXT_BASE | 5,
+ DVB_ENCODING_EXT_ISO_8859_6 = DVB_ENCODING_EXT_BASE | 6,
+ DVB_ENCODING_EXT_ISO_8859_7 = DVB_ENCODING_EXT_BASE | 7,
+ DVB_ENCODING_EXT_ISO_8859_8 = DVB_ENCODING_EXT_BASE | 8,
+ DVB_ENCODING_EXT_ISO_8859_9 = DVB_ENCODING_EXT_BASE | 9,
+ DVB_ENCODING_EXT_ISO_8859_10 = DVB_ENCODING_EXT_BASE | 10,
+ DVB_ENCODING_EXT_ISO_8859_11 = DVB_ENCODING_EXT_BASE | 11,
+ /* DVB_ENCODING_ISO_8859_12 = DVB_ENCODING_EXT_BASE | 12 */
+ DVB_ENCODING_EXT_ISO_8859_13 = DVB_ENCODING_EXT_BASE | 13,
+ DVB_ENCODING_EXT_ISO_8859_14 = DVB_ENCODING_EXT_BASE | 14,
+ DVB_ENCODING_EXT_ISO_8859_15 = DVB_ENCODING_EXT_BASE | 15,
+} dvb_encoding_e;
+
+extern const value_string dvb_string_encoding_vals[];
+
+WS_DLL_PUBLIC
+guint dvb_analyze_string_charset(tvbuff_t *tvb, int offset, int length,
+ dvb_encoding_e *encoding);
+
+WS_DLL_PUBLIC
+guint dvb_enc_to_item_enc(dvb_encoding_e encoding);
+
+
#if 0
void ASCII_to_EBCDIC(guint8 *buf, guint bytes);
guint8 ASCII_to_EBCDIC1(guint8 c);
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-17 01:01:46 +0000