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fix serializer being completely broken

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This commit is contained in:
MightyPork
2017-09-24 00:17:58 +02:00
parent 948bcb62ff
commit 692b2c4d11
1 changed files with 36 additions and 39 deletions
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user/screen.c
+36 -39
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@@ -8,6 +8,7 @@
#include "jstring.h"
#include "character_sets.h"
#include "utf8.h"
#include "uart_buffer.h"
TerminalConfigBundle * const termconf = &persist.current.termconf;
TerminalConfigBundle termconf_live;
@@ -1565,58 +1566,46 @@ screenSerializeToBuffer(char *buffer, size_t buf_len, void **data)
}
Cell *cell, *cell0;
WordB2 w1;
WordB3 lw1;
u8 nbytes;
size_t remain = buf_len;
char *bb = buffer;
#define bufput_c(c) do { \
*bb = (char)c; bb++; \
*bb = (char)(c); \
bb++; \
remain--; \
} while(0)
#define bufput_2B(n) do { \
encode2B((u16) n, &w1); \
bufput_c(w1.lsb); \
bufput_c(w1.msb); \
} while(0)
#define bufput_utf8(num) do { \
nbytes = utf8_encode(bb, (num)+1); \
bb += nbytes; \
remain -= nbytes; \
} while(0)
#define bufput_3B(n) do { \
encode3B((u32) n, &lw1); \
bufput_c(lw1.lsb); \
bufput_c(lw1.msb); \
bufput_c(lw1.xsb); \
} while(0)
#define bufput_t2B(t, n) do { \
bufput_c(t); \
bufput_2B(n); \
} while(0)
#define bufput_t3B(t, n) do { \
bufput_c(t); \
bufput_3B(n); \
} while(0)
#define bufput_t_utf8(t, num) do { \
bufput_c((t)); \
bufput_utf8((num)); \
} while(0)
if (ss == NULL) {
*data = ss = malloc(sizeof(struct ScreenSerializeState));
ss->index = 0;
ss->lastBg = 0;
ss->lastFg = 0;
ss->lastAttrs = 0;
ss->lastBg = 0xFF;
ss->lastFg = 0xFF;
ss->lastAttrs = 0xFFFF;
ss->lastCharLen = 0;
ss->lastSymbol = 32;
ss->lastSymbol = 0;
strncpy(ss->lastChar, " ", 4);
bufput_c('S');
// H W X Y Attribs
bufput_2B(H);
bufput_2B(W);
bufput_2B(cursor.y);
bufput_2B(cursor.x);
bufput_utf8(H);
bufput_utf8(W);
bufput_utf8(cursor.y);
bufput_utf8(cursor.x);
// 3B has 18 free bits
bufput_3B(
bufput_utf8(
(scr.cursor_visible << 0) |
(cursor.hanging << 1) |
(scr.cursors_alt_mode << 2) |
@@ -1656,7 +1645,7 @@ screenSerializeToBuffer(char *buffer, size_t buf_len, void **data)
}
if (repCnt == 0) {
// No repeat
// No repeat - first occurrence
bool changeAttrs = cell0->attrs != ss->lastAttrs;
bool changeFg = cell0->fg != ss->lastFg;
bool changeBg = cell0->bg != ss->lastBg;
@@ -1668,17 +1657,17 @@ screenSerializeToBuffer(char *buffer, size_t buf_len, void **data)
bg = cell0->bg;
if (changeColors) {
bufput_t3B(SEQ_TAG_COLORS, bg<<8 | fg);
bufput_t_utf8(SEQ_TAG_COLORS, bg<<8 | fg);
}
else if (changeFg) {
bufput_t2B(SEQ_TAG_FG, fg);
bufput_t_utf8(SEQ_TAG_FG, fg);
}
else if (changeBg) {
bufput_t2B(SEQ_TAG_BG, bg);
bufput_t_utf8(SEQ_TAG_BG, bg);
}
if (changeAttrs) {
bufput_t3B(SEQ_TAG_ATTRS, cell0->attrs);
bufput_t_utf8(SEQ_TAG_ATTRS, cell0->attrs);
}
// copy the symbol, until first 0 or reached 4 bytes
@@ -1703,7 +1692,7 @@ screenSerializeToBuffer(char *buffer, size_t buf_len, void **data)
int savings = ss->lastCharLen*repCnt;
if (savings > 3) {
// Repeat count
bufput_t2B(SEQ_TAG_REPEAT, repCnt);
bufput_t_utf8(SEQ_TAG_REPEAT, repCnt);
} else {
// repeat it manually
for(int k = 0; k < repCnt; k++) {
@@ -1718,6 +1707,14 @@ screenSerializeToBuffer(char *buffer, size_t buf_len, void **data)
ss->index = i;
bufput_c('\0'); // terminate the string
#if 0
printf("MSG: ");
for (int j=0;j<bb-buffer;j++) {
printf("%02X ", buffer[j]);
}
printf("\n");
#endif
if (i < W*H-1) {
return HTTPD_CGI_MORE;
}