#include <string.h>
#include <stdio.h>
+#include <ctype.h>
#include "madtty.h"
#include "roteprivate.h"
if (rt->crow < 0) rt->curpos_dirty = true, rt->crow = 0;
if (rt->ccol < 0) rt->curpos_dirty = true, rt->ccol = 0;
- if (rt->crow >= rt->rows)
+ if (rt->crow >= rt->rows)
rt->curpos_dirty = true, rt->crow = rt->rows - 1;
if (rt->ccol >= rt->cols)
static void cursor_line_down(RoteTerm *rt)
{
int i;
+
rt->crow++;
rt->curpos_dirty = true;
- if (rt->crow <= rt->pd->scrollbottom) return;
+ if (rt->crow <= rt->pd->scrollbottom)
+ return;
- /* must scroll the scrolling region up by 1 line, and put cursor on
+ /* must scroll the scrolling region up by 1 line, and put cursor on
* last line of it */
rt->crow = rt->pd->scrollbottom;
rt->cells[rt->pd->scrollbottom][i].ch = 0x20;
rt->cells[rt->pd->scrollbottom][i].attr = 0x70;
}
-
}
static void cursor_line_up(RoteTerm *rt)
{
int i;
+
rt->crow--;
rt->curpos_dirty = true;
- if (rt->crow >= rt->pd->scrolltop) return;
+ if (rt->crow >= rt->pd->scrolltop)
+ return;
- /* must scroll the scrolling region up by 1 line, and put cursor on
+ /* must scroll the scrolling region up by 1 line, and put cursor on
* first line of it */
rt->crow = rt->pd->scrolltop;
rt->cells[rt->pd->scrolltop][i].ch = 0x20;
rt->cells[rt->pd->scrolltop][i].attr = 0x70;
}
-
}
static inline void put_normal_char(RoteTerm *rt, char c)
char nc;
/* do some very pitiful translation to regular ascii chars */
switch (c) {
- case 'j': case 'k': case 'l': case 'm': case 'n': case 't':
+ case 'j': case 'k': case 'l': case 'm': case 'n': case 't':
case 'u': case 'v': case 'w':
nc = '+'; break;
case 'x':
rt->pd->esbuf[0] = '\0';
}
-static void handle_control_char(RoteTerm *rt, char c)
+static void handle_control_char(RoteTerm *rt, int c)
{
switch (c) {
- case '\r': rt->ccol = 0; break; /* carriage return */
+ case '\r': /* carriage return */
+ rt->ccol = 0;
+ break;
+
case '\n': /* line feed */
- rt->ccol = 0; cursor_line_down(rt);
- rt->curpos_dirty = true;
- break;
+ rt->ccol = 0; cursor_line_down(rt);
+ rt->curpos_dirty = true;
+ break;
+
case '\b': /* backspace */
- if (rt->ccol > 0) rt->ccol--;
- rt->curpos_dirty = true;
- break;
+ if (rt->ccol > 0) rt->ccol--;
+ rt->curpos_dirty = true;
+ break;
+
case '\t': /* tab */
- rt->ccol += 8 - (rt->ccol % 8);
- clamp_cursor_to_bounds(rt);
- break;
- case '\x1B': /* begin escape sequence (aborting previous one if any) */
- new_escape_sequence(rt);
- break;
- case '\x0E': /* enter graphical character mode */
- rt->pd->graphmode = true;
- break;
- case '\x0F': /* exit graphical character mode */
- rt->pd->graphmode = false;
- break;
- case '\x9B': /* CSI character. Equivalent to ESC [ */
- new_escape_sequence(rt);
- rt->pd->esbuf[rt->pd->esbuf_len++] = '[';
- break;
- case '\x18': case '\x1A': /* these interrupt escape sequences */
- cancel_escape_sequence(rt);
- break;
+ rt->ccol += 8 - (rt->ccol % 8);
+ clamp_cursor_to_bounds(rt);
+ break;
+
+ case '\x1b': /* begin escape sequence (aborting previous one if any) */
+ new_escape_sequence(rt);
+ break;
+
+ case '\x0e': /* enter graphical character mode */
+ rt->pd->graphmode = true;
+ break;
+
+ case '\x0f': /* exit graphical character mode */
+ rt->pd->graphmode = false;
+ break;
+
+ case '\x9b': /* CSI character. Equivalent to ESC [ */
+ new_escape_sequence(rt);
+ rt->pd->esbuf[rt->pd->esbuf_len++] = '[';
+ break;
+
+ case '\x18':
+ case '\x1a': /* these interrupt escape sequences */
+ cancel_escape_sequence(rt);
+ break;
+
case '\a': /* bell */
- /* do nothing for now... maybe a visual bell would be nice? */
- break;
-#ifdef DEBUG
- default:
- fprintf(stderr, "Unrecognized control char: %d (^%c)\n", c, c + '@');
- break;
-#endif
+ /* do nothing for now... maybe a visual bell would be nice? */
+ break;
}
}
static inline bool is_valid_csi_ender(char c)
{
- return (c >= 'a' && c <= 'z') ||
- (c >= 'A' && c <= 'Z') ||
- c == '@' || c == '`';
+ return (c >= 'a' && c <= 'z')
+ || (c >= 'A' && c <= 'Z')
+ || (c == '@' || c == '`');
}
static void try_interpret_escape_seq(RoteTerm *rt)
if (rt->pd->handler) {
/* call custom handler */
-#ifdef DEBUG
- fprintf(stderr, "Calling custom handler for ES <%s>.\n", rt->pd->esbuf);
-#endif
int answer = (*(rt->pd->handler))(rt, rt->pd->esbuf);
if (answer == ROTE_HANDLERESULT_OK) {
/* successfully handled */
-#ifdef DEBUG
- fprintf(stderr, "Handler returned OK. Done with escape sequence.\n");
-#endif
cancel_escape_sequence(rt);
return;
- }
- else if (answer == ROTE_HANDLERESULT_NOTYET) {
- /* handler might handle it when more characters are appended to
+ } else
+ if (answer == ROTE_HANDLERESULT_NOTYET) {
+ /* handler might handle it when more characters are appended to
* it. So for now we don't interpret it */
-#ifdef DEBUG
- fprintf(stderr, "Handler returned NOTYET. Waiting for more chars.\n");
-#endif
-
return;
}
/* If we got here then answer == ROTE_HANDLERESULT_NOWAY */
/* handler said it can't handle that escape sequence,
- * but we can still try handling it ourselves, so
+ * but we can still try handling it ourselves, so
* we proceed normally. */
-#ifdef DEBUG
- fprintf(stderr, "Handler returned NOWAY. Trying our handlers.\n");
-#endif
}
/* interpret ESC-M as reverse line-feed */
if (firstchar != '[' && firstchar != ']') {
/* unrecognized escape sequence. Let's forget about it. */
-#ifdef DEBUG
- fprintf(stderr, "Unrecognized ES: <%s>\n", rt->pd->esbuf);
-#endif
-
cancel_escape_sequence(rt);
return;
}
/* we have a csi escape sequence: interpret it */
rote_es_interpret_csi(rt);
cancel_escape_sequence(rt);
- }
- else if (firstchar == ']' && lastchar == '\a') {
+ } else if (firstchar == ']' && lastchar == '\a') {
/* we have an xterm escape sequence: interpret it */
/* rote_es_interpret_xterm_es(rt); -- TODO!*/
-#ifdef DEBUG
- fprintf(stderr, "Ignored XTerm ES.\n");
-#endif
cancel_escape_sequence(rt);
}
/* if the escape sequence took up all available space and could
* not yet be parsed, abort it */
- if (rt->pd->esbuf_len + 1 >= ESEQ_BUF_SIZE) cancel_escape_sequence(rt);
+ if (rt->pd->esbuf_len + 1 >= ESEQ_BUF_SIZE)
+ cancel_escape_sequence(rt);
}
void rote_vt_inject(RoteTerm *rt, const char *data, int len)
{
int i;
+
for (i = 0; i < len; i++, data++) {
- if (*data == 0) continue; /* completely ignore NUL */
+ if (*data == 0)
+ continue; /* completely ignore NUL */
+
if (*data >= 1 && *data <= 31) {
handle_control_char(rt, *data);
continue;
rt->pd->esbuf[++rt->pd->esbuf_len] = 0;
try_interpret_escape_seq(rt);
- }
- else if (rt->pd->graphmode)
+ } else
+ if (rt->pd->graphmode) {
put_graphmode_char(rt, *data);
- else
+ } else {
put_normal_char(rt, *data);
+ }
}
}
int start_row, start_col, end_row, end_col;
/* decide range */
- if (pcount && param[0] == 2)
- start_row = 0, start_col = 0, end_row = rt->rows - 1,
- end_col = rt->cols - 1;
-
- else if (pcount && param[0] == 1)
- start_row = 0, start_col = 0, end_row = rt->crow,
- end_col = rt->ccol;
-
- else start_row = rt->crow, start_col = rt->ccol,
- end_row = rt->rows - 1, end_col = rt->cols - 1;
+ if (pcount && param[0] == 2) {
+ start_row = 0;
+ start_col = 0;
+ end_row = rt->rows - 1;
+ end_col = rt->cols - 1;
+ } else
+ if (pcount && param[0] == 1) {
+ start_row = 0;
+ start_col = 0;
+ end_row = rt->crow;
+ end_col = rt->ccol;
+ } else {
+ start_row = rt->crow;
+ start_col = rt->ccol;
+ end_row = rt->rows - 1;
+ end_col = rt->cols - 1;
+ }
/* clean range */
for (r = start_row; r <= end_row; r++) {
for (c = (r == start_row ? start_col : 0);
c <= (r == end_row ? end_col : rt->cols - 1);
- c++) {
+ c++)
+ {
rt->cells[r][c].ch = 0x20;
rt->cells[r][c].attr = rt->curattr;
}
/* special case */
rt->crow = rt->ccol = 0;
return;
+ } else
+ if (pcount < 2) {
+ return; /* malformed */
}
- else if (pcount < 2) return; /* malformed */
rt->crow = param[0] - 1; /* convert from 1-based to 0-based */
rt->ccol = param[1] - 1; /* convert from 1-based to 0-based */
/* Interpret the 'relative mode' sequences: CUU, CUD, CUF, CUB, CNL,
* CPL, CHA, HPR, VPA, VPR, HPA */
-static void interpret_csi_C(RoteTerm *rt, char verb,
- int param[], int pcount) {
+static void interpret_csi_C(RoteTerm *rt, char verb, int param[], int pcount)
+{
int n = (pcount && param[0] > 0) ? param[0] : 1;
switch (verb) {
int cmd = pcount ? param[0] : 0;
switch (cmd) {
- case 1: erase_start = 0; erase_end = rt->ccol; break;
- case 2: erase_start = 0; erase_end = rt->cols - 1; break;
- default: erase_start = rt->ccol; erase_end = rt->cols - 1; break;
+ case 1: erase_start = 0; erase_end = rt->ccol; break;
+ case 2: erase_start = 0; erase_end = rt->cols - 1; break;
+ default: erase_start = rt->ccol; erase_end = rt->cols - 1; break;
}
for (i = erase_start; i <= erase_end; i++) {
- rt->cells[rt->crow][i].ch = 0x20;
+ rt->cells[rt->crow][i].ch = 0x20;
rt->cells[rt->crow][i].attr = rt->curattr;
}
/* Interpret the 'insert blanks' sequence (ICH) */
static void interpret_csi_ICH(RoteTerm *rt, int param[], int pcount)
{
- int n = (pcount && param[0] > 0) ? param[0] : 1;
+ int n = (pcount && param[0] > 0) ? param[0] : 1;
int i;
- for (i = rt->cols - 1; i >= rt->ccol + n; i--)
+
+ for (i = rt->cols - 1; i >= rt->ccol + n; i--) {
rt->cells[rt->crow][i] = rt->cells[rt->crow][i - n];
+ }
+
for (i = rt->ccol; i < rt->ccol + n; i++) {
rt->cells[rt->crow][i].ch = 0x20;
rt->cells[rt->crow][i].attr = rt->curattr;
/* Interpret the 'delete chars' sequence (DCH) */
static void interpret_csi_DCH(RoteTerm *rt, int param[], int pcount)
{
- int n = (pcount && param[0] > 0) ? param[0] : 1;
+ int n = (pcount && param[0] > 0) ? param[0] : 1;
int i;
+
for (i = rt->ccol; i < rt->cols; i++) {
- if (i + n < rt->cols)
+ if (i + n < rt->cols) {
rt->cells[rt->crow][i] = rt->cells[rt->crow][i + n];
- else {
+ } else {
rt->cells[rt->crow][i].ch = 0x20;
rt->cells[rt->crow][i].attr = rt->curattr;
}
int n = (pcount && param[0] > 0) ? param[0] : 1;
int i, j;
- for (i = rt->pd->scrollbottom; i >= rt->crow + n; i--)
+ for (i = rt->pd->scrollbottom; i >= rt->crow + n; i--) {
memcpy(rt->cells[i], rt->cells[i - n], sizeof(RoteCell) * rt->cols);
+ }
for (i = rt->crow; i < rt->crow + n && i <= rt->pd->scrollbottom; i++) {
rt->line_dirty[i] = true;
- for (j = 0; j < rt->cols; j++)
+ for (j = 0; j < rt->cols; j++) {
rt->cells[i][j].ch = 0x20, rt->cells[i][j].attr = rt->curattr;
+ }
}
}
for (i = rt->crow; i <= rt->pd->scrollbottom; i++) {
rt->line_dirty[i] = true;
- if (i + n <= rt->pd->scrollbottom)
+ if (i + n <= rt->pd->scrollbottom) {
memcpy(rt->cells[i], rt->cells[i+n], sizeof(RoteCell) * rt->cols);
- else {
- for (j = 0; j < rt->cols; j++)
+ } else {
+ for (j = 0; j < rt->cols; j++) {
rt->cells[i][j].ch = 0x20, rt->cells[i][j].attr = rt->curattr;
+ }
}
}
}
if (!pcount) {
newtop = 0;
newbottom = rt->rows - 1;
+ } else
+ if (pcount < 2) {
+ return; /* malformed */
}
- else if (pcount < 2) return; /* malformed */
- else {
- newtop = param[0] - 1;
- newbottom = param[1] - 1;
- }
+
+ newtop = param[0] - 1;
+ newbottom = param[1] - 1;
/* clamp to bounds */
- if (newtop < 0) newtop = 0;
- if (newtop >= rt->rows) newtop = rt->rows - 1;
- if (newbottom < 0) newbottom = 0;
- if (newbottom >= rt->rows) newbottom = rt->rows - 1;
+ if (newtop < 0)
+ newtop = 0;
+ if (newtop >= rt->rows)
+ newtop = rt->rows - 1;
+ if (newbottom < 0)
+ newbottom = 0;
+ if (newbottom >= rt->rows)
+ newbottom = rt->rows - 1;
/* check for range validity */
- if (newtop > newbottom) return;
+ if (newtop > newbottom)
+ return;
rt->pd->scrolltop = newtop;
rt->pd->scrollbottom = newbottom;
}
char verb = rt->pd->esbuf[rt->pd->esbuf_len - 1];
if (!strncmp(rt->pd->esbuf, "[?", 2)) { /* private-mode CSI, ignore */
-#ifdef DEBUG
- fprintf(stderr, "Ignoring private-mode CSI: <%s>\n", rt->pd->esbuf);
-#endif
- return;
+ return;
}
/* parse numeric parameters */
- while ((*p >= '0' && *p <= '9') || *p == ';') {
+ while (isdigit((unsigned char)*p) || *p == ';') {
if (*p == ';') {
if (param_count >= MAX_CSI_ES_PARAMS) return; /* too long! */
csiparam[param_count++] = 0;
- }
- else {
+ } else {
if (param_count == 0) csiparam[param_count++] = 0;
csiparam[param_count - 1] *= 10;
csiparam[param_count - 1] += *p - '0';
/* delegate handling depending on command character (verb) */
switch (verb) {
case 'h':
- if (param_count == 1 && csiparam[0] == 4) /* insert mode */
+ if (param_count == 1 && csiparam[0] == 4) /* insert mode */
rt->insert = true;
break;
case 'l':
case 'u': /* restore cursor location */
interpret_csi_RESTORECUR(rt, csiparam, param_count); break;
default:
-#ifdef DEBUG
- fprintf(stderr, "Unrecogized CSI: verb=%c <%s>\n",
- verb, rt->pd->esbuf);
-#endif
break;
}
}
projects / apps / madtty.git / commitdiff