int
tty_setty(int fd, ttydata_t *td)
{
#ifdef POSIX
RETRY(xtcsetattr(fd, TCSADRAIN, &td->d_t));
#else
# ifdef TERMIO
RETRY(ioctl(fd, TCSETAW, (ioctl_t) &td->d_t));
# else
# ifdef TIOCSETN
RETRY(ioctl(fd, TIOCSETN, (ioctl_t) &td->d_t));
# endif /* TIOCSETN */
# ifdef TIOCGETC
RETRY(ioctl(fd, TIOCSETC, (ioctl_t) &td->d_tc));
# endif /* TIOCGETC */
# ifdef TIOCGPAGE
RETRY(ioctl(fd, TIOCSPAGE, (ioctl_t) &td->d_pc));
# endif /* TIOCGPAGE */
# ifdef TIOCLGET
RETRY(ioctl(fd, TIOCLSET, (ioctl_t) &td->d_lb));
# endif /* TIOCLGET */
# endif /* TERMIO */
#endif /* POSIX */
#ifdef TIOCGLTC
RETRY(ioctl(fd, TIOCSLTC, (ioctl_t) &td->d_ltc));
#endif /* TIOCGLTC */
return 0;
}
int
tty_getty(int fd, ttydata_t *td)
{
#ifdef POSIX
RETRY(tcgetattr(fd, &td->d_t));
#else /* TERMIO || GSTTY */
# ifdef TERMIO
RETRY(ioctl(fd, TCGETA, (ioctl_t) &td->d_t));
# else /* GSTTY */
# ifdef TIOCGETP
RETRY(ioctl(fd, TIOCGETP, (ioctl_t) &td->d_t));
# endif /* TIOCGETP */
# ifdef TIOCGETC
RETRY(ioctl(fd, TIOCGETC, (ioctl_t) &td->d_tc));
# endif /* TIOCGETC */
# ifdef TIOCGPAGE
RETRY(ioctl(fd, TIOCGPAGE, (ioctl_t) &td->d_pc));
# endif /* TIOCGPAGE */
# ifdef TIOCLGET
RETRY(ioctl(fd, TIOCLGET, (ioctl_t) &td->d_lb));
# endif /* TIOCLGET */
# endif /* TERMIO */
#endif /* POSIX */
#ifdef TIOCGLTC
RETRY(ioctl(fd, TIOCGLTC, (ioctl_t) &td->d_ltc));
#endif /* TIOCGLTC */
return 0;
}
static WRImgFormat identFile(const char *path)
{
FILE *file;
unsigned char buffer[32];
size_t nread;
assert(path != NULL);
RETRY( file = fopen(path, "rb") )
if (file == NULL) {
RErrorCode = RERR_OPEN;
return IM_ERROR;
}
RETRY( nread = fread(buffer, 1, sizeof(buffer), file) )
if (nread < sizeof(buffer) || ferror(file)) {
RETRY( fclose(file) )
RErrorCode = RERR_READ;
return IM_ERROR;
}
RETRY( fclose(file) )
/* check for XPM */
if (strncmp((char *)buffer, "/* XPM */", 9) == 0)
return IM_XPM;
/* check for TIFF */
if ((buffer[0] == 'I' && buffer[1] == 'I' && buffer[2] == '*' && buffer[3] == 0)
|| (buffer[0] == 'M' && buffer[1] == 'M' && buffer[2] == 0 && buffer[3] == '*'))
return IM_TIFF;
#ifdef USE_PNG
/* check for PNG */
if (!png_sig_cmp(buffer, 0, 8))
return IM_PNG;
#endif
/* check for raw PPM or PGM */
if (buffer[0] == 'P' && (buffer[1] == '5' || buffer[1] == '6'))
return IM_PPM;
/* check for JPEG */
if (buffer[0] == 0xff && buffer[1] == 0xd8)
return IM_JPEG;
/* check for GIF */
if (buffer[0] == 'G' && buffer[1] == 'I' && buffer[2] == 'F')
return IM_GIF;
return IM_UNKNOWN;
}
//
// Read and unfold one semantic line from the source file, stripping off any coments.
//
int Parser::ReadLine()
{
#define RETRY() do { \
state = STAT_0; \
goto retry; \
} while(0)
#define ENTER_COMMENT() do { prev_state = state; state = STAT_SLASH; } while(0)
#define EXIT_COMMENT() do { state = prev_state; prev_state = STAT_INVALID; } while(0)
CC_STRING& line = pline.parsed;
pline.from.clear();
pline.parsed.clear();
pline.to.clear();
pline.pp_id = SSID_INVALID;
pline.content = -1;
enum {
STAT_INVALID = -1,
STAT_INIT = 0,
STAT_SPACE1,
STAT_SHARP,
STAT_SPACE2,
STAT_WORD,
STAT_0,
STAT_SLASH,
STAT_LC,
STAT_BC,
STAT_ASTERISK,
STAT_FOLD,
STAT_SQ,
STAT_DQ,
STAT_SQ_ESC,
STAT_DQ_ESC,
} state, prev_state = STAT_INVALID;
int c;
int foldcnt = 0;
File *file = GetCurrentFile().ifile;
CC_STRING directive;
bool eof = false;
state = STAT_INIT;
while(!eof) {
c = file->ReadChar();
if(c == EOF) {
if(line.isnull())
return 0;
c = '\n';
eof = true;
} else
pline.from += c;
if( c == '\r' ) /* Ignore carriage characters */
continue;
if(c == '\n')
file->line++;
retry:
switch(state) {
case STAT_INIT:
switch(c) {
case ' ':
case '\t':
state = STAT_SPACE1;
line = c;
continue;
case '#':
state = STAT_SHARP;
line = c;
continue;
}
state = STAT_0;
case STAT_0:
switch(c) {
case '/':
ENTER_COMMENT();
break;
case '\\':
state = STAT_FOLD;
break;
case '"':
state = STAT_DQ;
break;
case '\'':
state = STAT_SQ;
break;
default:
if(rtc && c == rtc->as_lc_char && pline.pp_id == SSID_INVALID)
state = STAT_LC;
break;
}
break;
case STAT_SLASH:
switch(c) {
case '/':
state = STAT_LC;
mark_comment_start();
line.remove_last();
break;
case '*':
state = STAT_BC;
mark_comment_start();
line.remove_last();
break;
case '"':
state = STAT_DQ;
break;
case '\'':
state = STAT_SQ;
break;
default:
EXIT_COMMENT();
}
break;
case STAT_LC: /* line comment */
if(c == '\n')
state = STAT_0;
break;
case STAT_BC: /* block comments */
if(c == '*')
state = STAT_ASTERISK;
if(c == '\n')
foldcnt++;
break;
case STAT_ASTERISK: /* asterisk */
if(c == '/') {
EXIT_COMMENT();
continue;
}
else if(c != '*')
state = STAT_BC;
break;
case STAT_FOLD: /* folding the line */
if(c == '\t' || c == ' ')
;
else {
if(c == '\n')
foldcnt++;
state = STAT_0;
continue;
}
break;
case STAT_DQ:
switch(c) {
case '\\':
state = STAT_DQ_ESC;
break;
case '"':
state = STAT_0;
break;
}
break;
case STAT_SQ:
switch(c) {
case '\\':
state = STAT_SQ_ESC;
break;
case '\'':
state = STAT_0;
break;
}
break;
case STAT_DQ_ESC:
state = STAT_DQ;
break;
case STAT_SQ_ESC:
state = STAT_SQ;
break;
case STAT_SPACE1:
switch(c) {
case '#':
state = STAT_SHARP; break;
case ' ':
case '\t':
break;
case '/':
ENTER_COMMENT();
break;
default:
RETRY();
}
break;
case STAT_SHARP:
if(isblank(c)) {
state = STAT_SPACE2;
break;
}
/* fall through */
case STAT_SPACE2:
if(isalpha(c) || isdigit(c) || c == '_') {
state = STAT_WORD;
directive = '#';
directive += c;
} else if(c == '/')
ENTER_COMMENT();
else if(!isblank(c))
RETRY();
break;
case STAT_WORD:
if(isalpha(c) || isdigit(c) || c == '_')
directive += c;
else {
for(size_t i = 0; i < num_preprocessors; i++)
if(preprocessors[i] == directive) {
pline.pp_id = intab->syLut.Put(preprocessors[i]);
pline.content = line.size();
state = STAT_0;
break;
}
RETRY();
}
break;
case STAT_INVALID:
errmsg = "Invalid state";
return -1;
}
if(state != STAT_LC && state != STAT_BC && state != STAT_FOLD && state != STAT_ASTERISK)
line += c;
if ((state == STAT_INIT || state == STAT_0) && c == '\n')
break;
}
if(state != STAT_INIT && state != STAT_0) {
errmsg = "Syntax error";
return -1;
}
file->offset = -foldcnt;
return 1;
}