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-rw-r--r--src/vterm/encoding.c230
1 files changed, 0 insertions, 230 deletions
diff --git a/src/vterm/encoding.c b/src/vterm/encoding.c
deleted file mode 100644
index 434ac3f99b..0000000000
--- a/src/vterm/encoding.c
+++ /dev/null
@@ -1,230 +0,0 @@
-#include "vterm_internal.h"
-
-#define UNICODE_INVALID 0xFFFD
-
-#if defined(DEBUG) && DEBUG > 1
-# define DEBUG_PRINT_UTF8
-#endif
-
-struct UTF8DecoderData {
- // number of bytes remaining in this codepoint
- int bytes_remaining;
-
- // number of bytes total in this codepoint once it's finished
- // (for detecting overlongs)
- int bytes_total;
-
- int this_cp;
-};
-
-static void init_utf8(VTermEncoding *enc, void *data_)
-{
- struct UTF8DecoderData *data = data_;
-
- data->bytes_remaining = 0;
- data->bytes_total = 0;
-}
-
-static void decode_utf8(VTermEncoding *enc, void *data_,
- uint32_t cp[], int *cpi, int cplen,
- const char bytes[], size_t *pos, size_t bytelen)
-{
- struct UTF8DecoderData *data = data_;
-
-#ifdef DEBUG_PRINT_UTF8
- printf("BEGIN UTF-8\n");
-#endif
-
- for(; *pos < bytelen && *cpi < cplen; (*pos)++) {
- unsigned char c = bytes[*pos];
-
-#ifdef DEBUG_PRINT_UTF8
- printf(" pos=%zd c=%02x rem=%d\n", *pos, c, data->bytes_remaining);
-#endif
-
- if(c < 0x20) // C0
- return;
-
- else if(c >= 0x20 && c < 0x7f) {
- if(data->bytes_remaining)
- cp[(*cpi)++] = UNICODE_INVALID;
-
- cp[(*cpi)++] = c;
-#ifdef DEBUG_PRINT_UTF8
- printf(" UTF-8 char: U+%04x\n", c);
-#endif
- data->bytes_remaining = 0;
- }
-
- else if(c == 0x7f) // DEL
- return;
-
- else if(c >= 0x80 && c < 0xc0) {
- if(!data->bytes_remaining) {
- cp[(*cpi)++] = UNICODE_INVALID;
- continue;
- }
-
- data->this_cp <<= 6;
- data->this_cp |= c & 0x3f;
- data->bytes_remaining--;
-
- if(!data->bytes_remaining) {
-#ifdef DEBUG_PRINT_UTF8
- printf(" UTF-8 raw char U+%04x bytelen=%d ", data->this_cp, data->bytes_total);
-#endif
- // Check for overlong sequences
- switch(data->bytes_total) {
- case 2:
- if(data->this_cp < 0x0080) data->this_cp = UNICODE_INVALID;
- break;
- case 3:
- if(data->this_cp < 0x0800) data->this_cp = UNICODE_INVALID;
- break;
- case 4:
- if(data->this_cp < 0x10000) data->this_cp = UNICODE_INVALID;
- break;
- case 5:
- if(data->this_cp < 0x200000) data->this_cp = UNICODE_INVALID;
- break;
- case 6:
- if(data->this_cp < 0x4000000) data->this_cp = UNICODE_INVALID;
- break;
- }
- // Now look for plain invalid ones
- if((data->this_cp >= 0xD800 && data->this_cp <= 0xDFFF) ||
- data->this_cp == 0xFFFE ||
- data->this_cp == 0xFFFF)
- data->this_cp = UNICODE_INVALID;
-#ifdef DEBUG_PRINT_UTF8
- printf(" char: U+%04x\n", data->this_cp);
-#endif
- cp[(*cpi)++] = data->this_cp;
- }
- }
-
- else if(c >= 0xc0 && c < 0xe0) {
- if(data->bytes_remaining)
- cp[(*cpi)++] = UNICODE_INVALID;
-
- data->this_cp = c & 0x1f;
- data->bytes_total = 2;
- data->bytes_remaining = 1;
- }
-
- else if(c >= 0xe0 && c < 0xf0) {
- if(data->bytes_remaining)
- cp[(*cpi)++] = UNICODE_INVALID;
-
- data->this_cp = c & 0x0f;
- data->bytes_total = 3;
- data->bytes_remaining = 2;
- }
-
- else if(c >= 0xf0 && c < 0xf8) {
- if(data->bytes_remaining)
- cp[(*cpi)++] = UNICODE_INVALID;
-
- data->this_cp = c & 0x07;
- data->bytes_total = 4;
- data->bytes_remaining = 3;
- }
-
- else if(c >= 0xf8 && c < 0xfc) {
- if(data->bytes_remaining)
- cp[(*cpi)++] = UNICODE_INVALID;
-
- data->this_cp = c & 0x03;
- data->bytes_total = 5;
- data->bytes_remaining = 4;
- }
-
- else if(c >= 0xfc && c < 0xfe) {
- if(data->bytes_remaining)
- cp[(*cpi)++] = UNICODE_INVALID;
-
- data->this_cp = c & 0x01;
- data->bytes_total = 6;
- data->bytes_remaining = 5;
- }
-
- else {
- cp[(*cpi)++] = UNICODE_INVALID;
- }
- }
-}
-
-static VTermEncoding encoding_utf8 = {
- .init = &init_utf8,
- .decode = &decode_utf8,
-};
-
-static void decode_usascii(VTermEncoding *enc, void *data,
- uint32_t cp[], int *cpi, int cplen,
- const char bytes[], size_t *pos, size_t bytelen)
-{
- int is_gr = bytes[*pos] & 0x80;
-
- for(; *pos < bytelen && *cpi < cplen; (*pos)++) {
- unsigned char c = bytes[*pos] ^ is_gr;
-
- if(c < 0x20 || c == 0x7f || c >= 0x80)
- return;
-
- cp[(*cpi)++] = c;
- }
-}
-
-static VTermEncoding encoding_usascii = {
- .decode = &decode_usascii,
-};
-
-struct StaticTableEncoding {
- const VTermEncoding enc;
- const uint32_t chars[128];
-};
-
-static void decode_table(VTermEncoding *enc, void *data,
- uint32_t cp[], int *cpi, int cplen,
- const char bytes[], size_t *pos, size_t bytelen)
-{
- struct StaticTableEncoding *table = (struct StaticTableEncoding *)enc;
- int is_gr = bytes[*pos] & 0x80;
-
- for(; *pos < bytelen && *cpi < cplen; (*pos)++) {
- unsigned char c = bytes[*pos] ^ is_gr;
-
- if(c < 0x20 || c == 0x7f || c >= 0x80)
- return;
-
- if(table->chars[c])
- cp[(*cpi)++] = table->chars[c];
- else
- cp[(*cpi)++] = c;
- }
-}
-
-#include "encoding/DECdrawing.inc"
-#include "encoding/uk.inc"
-
-static struct {
- VTermEncodingType type;
- char designation;
- VTermEncoding *enc;
-}
-encodings[] = {
- { ENC_UTF8, 'u', &encoding_utf8 },
- { ENC_SINGLE_94, '0', (VTermEncoding*)&encoding_DECdrawing },
- { ENC_SINGLE_94, 'A', (VTermEncoding*)&encoding_uk },
- { ENC_SINGLE_94, 'B', &encoding_usascii },
- { 0 },
-};
-
-/* This ought to be INTERNAL but isn't because it's used by unit testing */
-VTermEncoding *vterm_lookup_encoding(VTermEncodingType type, char designation)
-{
- for(int i = 0; encodings[i].designation; i++)
- if(encodings[i].type == type && encodings[i].designation == designation)
- return encodings[i].enc;
- return NULL;
-}
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