DevKit7/libctru
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better parameter checking

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This commit is contained in:
Dave Murphy 2014-12-13 02:58:07 +00:00
parent 2de946890d
commit 94591dc5f7
1 changed files with 72 additions and 26 deletions
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68
libctru/source/console.c
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@ -225,23 +225,34 @@ ssize_t con_write(struct _reent *r,int fd,const char *ptr, size_t len) {
// Cursor directional movement
//---------------------------------------
case 'A':
assigned = sscanf(escapeseq,"[%dA", &parameter);
consumed = 0;
assigned = sscanf(escapeseq,"[%dA%n", &parameter, &consumed);
if (assigned==0) parameter = 1;
if (consumed)
currentConsole->cursorY = (currentConsole->cursorY - parameter) < 0 ? 0 : currentConsole->cursorY - parameter;
escaping = false;
break;
case 'B':
sscanf(escapeseq,"[%dB", &parameter);
consumed = 0;
assigned = sscanf(escapeseq,"[%dB%n", &parameter, &consumed);
if (assigned==0) parameter = 1;
if (consumed)
currentConsole->cursorY = (currentConsole->cursorY + parameter) > currentConsole->windowHeight - 1 ? currentConsole->windowHeight - 1 : currentConsole->cursorY + parameter;
escaping = false;
break;
case 'C':
sscanf(escapeseq,"[%dC", &parameter);
consumed = 0;
assigned = sscanf(escapeseq,"[%dC%n", &parameter, &consumed);
if (assigned==0) parameter = 1;
if (consumed)
currentConsole->cursorX = (currentConsole->cursorX + parameter) > currentConsole->windowWidth - 1 ? currentConsole->windowWidth - 1 : currentConsole->cursorX + parameter;
escaping = false;
break;
case 'D':
sscanf(escapeseq,"[%dD", &parameter);
consumed = 0;
assigned = sscanf(escapeseq,"[%dD%n", &parameter, &consumed);
if (assigned==0) parameter = 1;
if (consumed)
currentConsole->cursorX = (currentConsole->cursorX - parameter) < 0 ? 0 : currentConsole->cursorX - parameter;
escaping = false;
break;
@ -250,13 +261,49 @@ ssize_t con_write(struct _reent *r,int fd,const char *ptr, size_t len) {
//---------------------------------------
case 'H':
case 'f':
sscanf(escapeseq,"[%d;%df", &currentConsole->cursorY , &currentConsole->cursorX );
{
int x, y;
char c;
if(sscanf(escapeseq,"[%d;%d%c", &y, &x, &c) == 3 && (c == 'f' || c == 'H')) {
currentConsole->cursorX = x;
currentConsole->cursorY = y;
escaping = false;
break;
}
x = y = 1;
if(sscanf(escapeseq,"[%d;%c", &y, &c) == 2 && (c == 'f' || c == 'H')) {
currentConsole->cursorX = x;
currentConsole->cursorY = y;
escaping = false;
break;
}
x = y = 1;
if(sscanf(escapeseq,"[;%d%c", &x, &c) == 2 && (c == 'f' || c == 'H')) {
currentConsole->cursorX = x;
currentConsole->cursorY = y;
escaping = false;
break;
}
x = y = 1;
if(sscanf(escapeseq,"[;%c", &c) == 1 && (c == 'f' || c == 'H')) {
currentConsole->cursorX = x;
currentConsole->cursorY = y;
escaping = false;
break;
}
// invalid format
escaping = false;
break;
}
//---------------------------------------
// Screen clear
//---------------------------------------
case 'J':
if(escapelen <= 3)
consoleCls(escapeseq[escapelen-2]);
escaping = false;
break;
@ -264,6 +311,7 @@ ssize_t con_write(struct _reent *r,int fd,const char *ptr, size_t len) {
// Line clear
//---------------------------------------
case 'K':
if(escapelen <= 3)
consoleClearLine(escapeseq[escapelen-2]);
escaping = false;
break;
@ -271,16 +319,20 @@ ssize_t con_write(struct _reent *r,int fd,const char *ptr, size_t len) {
// Save cursor position
//---------------------------------------
case 's':
if(escapelen == 2) {
currentConsole->prevCursorX = currentConsole->cursorX ;
currentConsole->prevCursorY = currentConsole->cursorY ;
}
escaping = false;
break;
//---------------------------------------
// Load cursor position
//---------------------------------------
case 'u':
if(escapelen == 2) {
currentConsole->cursorX = currentConsole->prevCursorX ;
currentConsole->cursorY = currentConsole->prevCursorY ;
}
escaping = false;
break;
//---------------------------------------
@ -290,11 +342,6 @@ ssize_t con_write(struct _reent *r,int fd,const char *ptr, size_t len) {
escapeseq++;
escapelen--;
if (escapelen == 1) {
escaping = false;
break;
}
do {
parameter = 0;
if (escapelen == 1) {
@ -309,7 +356,6 @@ ssize_t con_write(struct _reent *r,int fd,const char *ptr, size_t len) {
escapelen -= consumed;
switch(parameter) {
case 0: // reset
currentConsole->flags = 0;
currentConsole->bg = 0;