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https://git.do.srb2.org/STJr/SRB2.git
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Merge branch 'refactor-tty-input' into 'next'
Refactor TTY input handling See merge request STJr/SRB2!2451
This commit is contained in:
Alam Ed Arias
commit
93ea201a6a
2 changed files with 73 additions and 106 deletions
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@ -705,10 +705,9 @@ typedef struct
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static feild_t tty_con;
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// when printing general stuff to stdout stderr (Sys_Printf)
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// we need to disable the tty console stuff
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// this increments so we can recursively disable
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static INT32 ttycon_hide = 0;
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// lock to prevent clearing partial lines, since not everything
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// printed ends on a newline.
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static boolean ttycon_ateol = true;
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// some key codes that the terminal may be using
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// TTimo NOTE: I'm not sure how relevant this is
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static INT32 tty_erase;
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@ -736,63 +735,31 @@ static inline void tty_FlushIn(void)
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// TTimo NOTE: it seems on some terminals just sending '\b' is not enough
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// so for now, in any case we send "\b \b" .. yeah well ..
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// (there may be a way to find out if '\b' alone would work though)
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// Hanicef NOTE: using \b this way is unreliable because of terminal state,
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// it's better to use \r to reset the cursor to the beginning of the
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// line and clear from there.
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static void tty_Back(void)
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{
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char key;
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ssize_t d;
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key = '\b';
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d = write(STDOUT_FILENO, &key, 1);
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key = ' ';
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d = write(STDOUT_FILENO, &key, 1);
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key = '\b';
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d = write(STDOUT_FILENO, &key, 1);
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(void)d;
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write(STDOUT_FILENO, "\r", 1);
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if (tty_con.cursor>0)
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{
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write(STDOUT_FILENO, tty_con.buffer, tty_con.cursor);
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}
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write(STDOUT_FILENO, " \b", 2);
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}
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static void tty_Clear(void)
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{
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size_t i;
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write(STDOUT_FILENO, "\r", 1);
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if (tty_con.cursor>0)
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{
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for (i=0; i<tty_con.cursor; i++)
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{
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tty_Back();
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write(STDOUT_FILENO, " ", 1);
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}
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write(STDOUT_FILENO, "\r", 1);
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}
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}
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// clear the display of the line currently edited
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// bring cursor back to beginning of line
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static inline void tty_Hide(void)
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{
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//I_Assert(consolevent);
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if (ttycon_hide)
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{
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ttycon_hide++;
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return;
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}
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tty_Clear();
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ttycon_hide++;
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}
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// show the current line
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// FIXME TTimo need to position the cursor if needed??
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static inline void tty_Show(void)
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{
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size_t i;
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ssize_t d;
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//I_Assert(consolevent);
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I_Assert(ttycon_hide>0);
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ttycon_hide--;
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if (ttycon_hide == 0 && tty_con.cursor)
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{
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for (i=0; i<tty_con.cursor; i++)
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{
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d = write(STDOUT_FILENO, tty_con.buffer+i, 1);
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}
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}
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(void)d;
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}
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// never exit without calling this, or your terminal will be left in a pretty bad state
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@ -900,6 +867,11 @@ static void I_GetConsoleEvents(void)
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tty_con.cursor = 0;
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ev.key = KEY_ENTER;
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}
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else if (key == 0x4) // ^D, aka EOF
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{
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// shut down, most unix programs behave this way
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I_Quit();
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}
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else continue;
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}
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else if (tty_con.cursor < sizeof(tty_con.buffer))
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@ -1046,6 +1018,9 @@ void I_OutputMsg(const char *fmt, ...)
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va_start(argptr,fmt);
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len = vsnprintf(NULL, 0, fmt, argptr);
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va_end(argptr);
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if (len == 0)
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return;
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txt = malloc(len+1);
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va_start(argptr,fmt);
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vsprintf(txt, fmt, argptr);
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@ -1135,18 +1110,20 @@ void I_OutputMsg(const char *fmt, ...)
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}
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#else
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#ifdef HAVE_TERMIOS
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if (consolevent)
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if (consolevent && ttycon_ateol)
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{
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tty_Hide();
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tty_Clear();
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ttycon_ateol = false;
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}
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#endif
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if (!framebuffer)
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fprintf(stderr, "%s", txt);
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#ifdef HAVE_TERMIOS
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if (consolevent)
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if (consolevent && txt[len-1] == '\n')
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{
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tty_Show();
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write(STDOUT_FILENO, tty_con.buffer, tty_con.cursor);
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ttycon_ateol = true;
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}
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#endif
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@ -477,10 +477,9 @@ typedef struct
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feild_t tty_con;
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// when printing general stuff to stdout stderr (Sys_Printf)
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// we need to disable the tty console stuff
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// this increments so we can recursively disable
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static INT32 ttycon_hide = 0;
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// lock to prevent clearing partial lines, since not everything
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// printed ends on a newline.
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static boolean ttycon_ateol = true;
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// some key codes that the terminal may be using
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// TTimo NOTE: I'm not sure how relevant this is
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static INT32 tty_erase;
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@ -508,63 +507,31 @@ static inline void tty_FlushIn(void)
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// TTimo NOTE: it seems on some terminals just sending '\b' is not enough
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// so for now, in any case we send "\b \b" .. yeah well ..
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// (there may be a way to find out if '\b' alone would work though)
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// Hanicef NOTE: using \b this way is unreliable because of terminal state,
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// it's better to use \r to reset the cursor to the beginning of the
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// line and clear from there.
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static void tty_Back(void)
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{
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char key;
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ssize_t d;
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key = '\b';
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d = write(STDOUT_FILENO, &key, 1);
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key = ' ';
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d = write(STDOUT_FILENO, &key, 1);
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key = '\b';
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d = write(STDOUT_FILENO, &key, 1);
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(void)d;
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write(STDOUT_FILENO, "\r", 1);
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if (tty_con.cursor>0)
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{
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write(STDOUT_FILENO, tty_con.buffer, tty_con.cursor);
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}
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write(STDOUT_FILENO, " \b", 2);
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}
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static void tty_Clear(void)
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{
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size_t i;
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write(STDOUT_FILENO, "\r", 1);
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if (tty_con.cursor>0)
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{
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for (i=0; i<tty_con.cursor; i++)
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{
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tty_Back();
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write(STDOUT_FILENO, " ", 1);
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}
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write(STDOUT_FILENO, "\r", 1);
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}
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}
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// clear the display of the line currently edited
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// bring cursor back to beginning of line
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static inline void tty_Hide(void)
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{
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//I_Assert(consolevent);
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if (ttycon_hide)
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{
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ttycon_hide++;
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return;
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}
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tty_Clear();
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ttycon_hide++;
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}
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// show the current line
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// FIXME TTimo need to position the cursor if needed??
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static inline void tty_Show(void)
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{
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size_t i;
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ssize_t d;
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//I_Assert(consolevent);
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I_Assert(ttycon_hide>0);
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ttycon_hide--;
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if (ttycon_hide == 0 && tty_con.cursor)
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{
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for (i=0; i<tty_con.cursor; i++)
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{
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d = write(STDOUT_FILENO, tty_con.buffer+i, 1);
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}
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}
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(void)d;
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}
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// never exit without calling this, or your terminal will be left in a pretty bad state
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@ -672,6 +639,11 @@ void I_GetConsoleEvents(void)
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tty_con.cursor = 0;
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ev.key = KEY_ENTER;
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}
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else if (key == 0x4) // ^D, aka EOF
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{
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// shut down, most unix programs behave this way
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I_Quit();
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}
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else continue;
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}
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else if (tty_con.cursor < sizeof (tty_con.buffer))
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@ -879,9 +851,16 @@ static void I_RegisterChildSignals(void)
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void I_OutputMsg(const char *fmt, ...)
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{
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size_t len;
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char txt[8192];
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char *txt;
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va_list argptr;
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va_start(argptr,fmt);
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len = vsnprintf(NULL, 0, fmt, argptr);
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va_end(argptr);
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if (len == 0)
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return;
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txt = malloc(len+1);
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va_start(argptr,fmt);
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vsprintf(txt, fmt, argptr);
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va_end(argptr);
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@ -915,7 +894,10 @@ void I_OutputMsg(const char *fmt, ...)
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DWORD bytesWritten;
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if (co == INVALID_HANDLE_VALUE)
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{
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free(txt);
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return;
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}
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if (GetFileType(co) == FILE_TYPE_CHAR && GetConsoleMode(co, &bytesWritten))
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{
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@ -931,11 +913,16 @@ void I_OutputMsg(const char *fmt, ...)
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if (oldLength > 0)
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{
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LPVOID blank = malloc(oldLength);
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if (!blank) return;
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if (!blank)
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{
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free(txt);
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return;
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}
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memset(blank, ' ', oldLength); // Blank out.
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oldLines = malloc(oldLength*sizeof(TCHAR));
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if (!oldLines)
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{
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free(txt);
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free(blank);
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return;
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}
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@ -970,18 +957,20 @@ void I_OutputMsg(const char *fmt, ...)
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}
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#else
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#ifdef HAVE_TERMIOS
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if (consolevent)
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if (consolevent && ttycon_ateol)
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{
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tty_Hide();
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tty_Clear();
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ttycon_ateol = false;
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}
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#endif
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if (!framebuffer)
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fprintf(stderr, "%s", txt);
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#ifdef HAVE_TERMIOS
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if (consolevent)
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if (consolevent && txt[len-1] == '\n')
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{
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tty_Show();
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write(STDOUT_FILENO, tty_con.buffer, tty_con.cursor);
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ttycon_ateol = true;
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}
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#endif
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@ -990,6 +979,7 @@ void I_OutputMsg(const char *fmt, ...)
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fflush(stderr);
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#endif
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free(txt);
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}
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//
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