Add eschandle()
We already have a csihandle() function, where is located code about CSI sequences, so it is logical do the same with ESC sequences. This change helps to simplify tcontrol(), which has a complex flow and should be rewritten.dev
Roberto E. Vargas Caballero
parent
a3549c2eec
commit
e5f6736ee0
169
st.c
169
st.c
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@ -356,6 +356,7 @@ static void csidump(void);
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static void csihandle(void);
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static void csiparse(void);
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static void csireset(void);
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static int eschandle(uchar ascii);
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static void strdump(void);
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static void strhandle(void);
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static void strparse(void);
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@ -2347,6 +2348,19 @@ tdeftran(char ascii) {
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}
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}
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void
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tdectest(char c) {
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static char E[UTF_SIZ] = "E";
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int x, y;
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if(c == '8') { /* DEC screen alignment test. */
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for(x = 0; x < term.col; ++x) {
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for(y = 0; y < term.row; ++y)
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tsetchar(E, &term.c.attr, x, y);
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}
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}
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}
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void
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tstrsequence(uchar c) {
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if (c & 0x80) {
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@ -2455,17 +2469,83 @@ tcontrolcode(uchar ascii) {
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return;
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}
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void
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tdectest(char c) {
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static char E[UTF_SIZ] = "E";
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int x, y;
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if(c == '8') { /* DEC screen alignment test. */
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for(x = 0; x < term.col; ++x) {
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for(y = 0; y < term.row; ++y)
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tsetchar(E, &term.c.attr, x, y);
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/*
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* returns 1 when the sequence is finished and it hasn't to read
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* more characters for this sequence, otherwise 0
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*/
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int
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eschandle(uchar ascii) {
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switch(ascii) {
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case '[':
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term.esc |= ESC_CSI;
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return 0;
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case '#':
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term.esc |= ESC_TEST;
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return 0;
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case 'P': /* DCS -- Device Control String */
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case '_': /* APC -- Application Program Command */
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case '^': /* PM -- Privacy Message */
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case ']': /* OSC -- Operating System Command */
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case 'k': /* old title set compatibility */
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tstrsequence(ascii);
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return 0;
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case '(': /* set primary charset G0 */
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case ')': /* set secondary charset G1 */
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case '*': /* set tertiary charset G2 */
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case '+': /* set quaternary charset G3 */
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term.icharset = ascii - '(';
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term.esc |= ESC_ALTCHARSET;
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return 0;
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case 'D': /* IND -- Linefeed */
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if(term.c.y == term.bot) {
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tscrollup(term.top, 1);
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} else {
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tmoveto(term.c.x, term.c.y+1);
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}
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break;
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case 'E': /* NEL -- Next line */
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tnewline(1); /* always go to first col */
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break;
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case 'H': /* HTS -- Horizontal tab stop */
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term.tabs[term.c.x] = 1;
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break;
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case 'M': /* RI -- Reverse index */
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if(term.c.y == term.top) {
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tscrolldown(term.top, 1);
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} else {
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tmoveto(term.c.x, term.c.y-1);
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}
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break;
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case 'Z': /* DECID -- Identify Terminal */
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ttywrite(vtiden, sizeof(vtiden) - 1);
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break;
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case 'c': /* RIS -- Reset to inital state */
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treset();
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xresettitle();
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xloadcols();
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break;
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case '=': /* DECPAM -- Application keypad */
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term.mode |= MODE_APPKEYPAD;
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break;
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case '>': /* DECPNM -- Normal keypad */
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term.mode &= ~MODE_APPKEYPAD;
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break;
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case '7': /* DECSC -- Save Cursor */
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tcursor(CURSOR_SAVE);
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break;
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case '8': /* DECRC -- Restore Cursor */
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tcursor(CURSOR_LOAD);
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break;
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case '\\': /* ST -- String Terminator */
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if(term.esc & ESC_STR_END)
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strhandle();
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break;
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default:
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fprintf(stderr, "erresc: unknown sequence ESC 0x%02X '%c'\n",
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(uchar) ascii, isprint(ascii)? ascii:'.');
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break;
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}
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return 1;
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}
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void
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@ -2552,76 +2632,9 @@ tputc(char *c, int len) {
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} else if(term.esc & ESC_TEST) {
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tdectest(ascii);
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} else {
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switch(ascii) {
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case '[':
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term.esc |= ESC_CSI;
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if (!eschandle(ascii))
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return;
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case '#':
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term.esc |= ESC_TEST;
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return;
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case 'P': /* DCS -- Device Control String */
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case '_': /* APC -- Application Program Command */
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case '^': /* PM -- Privacy Message */
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case ']': /* OSC -- Operating System Command */
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case 'k': /* old title set compatibility */
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tstrsequence(ascii);
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return;
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case '(': /* set primary charset G0 */
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case ')': /* set secondary charset G1 */
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case '*': /* set tertiary charset G2 */
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case '+': /* set quaternary charset G3 */
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term.icharset = ascii - '(';
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term.esc |= ESC_ALTCHARSET;
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return;
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case 'D': /* IND -- Linefeed */
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if(term.c.y == term.bot) {
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tscrollup(term.top, 1);
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} else {
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tmoveto(term.c.x, term.c.y+1);
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}
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break;
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case 'E': /* NEL -- Next line */
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tnewline(1); /* always go to first col */
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break;
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case 'H': /* HTS -- Horizontal tab stop */
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term.tabs[term.c.x] = 1;
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break;
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case 'M': /* RI -- Reverse index */
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if(term.c.y == term.top) {
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tscrolldown(term.top, 1);
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} else {
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tmoveto(term.c.x, term.c.y-1);
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}
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break;
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case 'Z': /* DECID -- Identify Terminal */
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ttywrite(vtiden, sizeof(vtiden) - 1);
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break;
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case 'c': /* RIS -- Reset to inital state */
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treset();
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xresettitle();
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xloadcols();
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break;
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case '=': /* DECPAM -- Application keypad */
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term.mode |= MODE_APPKEYPAD;
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break;
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case '>': /* DECPNM -- Normal keypad */
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term.mode &= ~MODE_APPKEYPAD;
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break;
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case '7': /* DECSC -- Save Cursor */
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tcursor(CURSOR_SAVE);
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break;
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case '8': /* DECRC -- Restore Cursor */
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tcursor(CURSOR_LOAD);
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break;
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case '\\': /* ST -- String Terminator */
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if(term.esc & ESC_STR_END)
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strhandle();
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break;
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default:
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fprintf(stderr, "erresc: unknown sequence ESC 0x%02X '%c'\n",
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(uchar) ascii, isprint(ascii)? ascii:'.');
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break;
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}
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/* sequence already finished */
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}
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term.esc = 0;
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/*
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