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This commit is contained in:
Eric Andersen
1999-11-09 01:47:36 +00:00
parent fbb39c83b6
commit 50d6360771
19 changed files with 331 additions and 305 deletions
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73
more.c
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@@ -25,7 +25,9 @@
/* Turning this off makes things a bit smaller (and less pretty) */
#define BB_MORE_TERM
#define BB_FEATURE_USE_TERMIOS
/* Turning this off makes things a bit smaller (and less pretty) */
#define BB_FEATURE_AUTOWIDTH
@@ -33,18 +35,16 @@
#include <stdio.h>
#include <fcntl.h>
#include <signal.h>
#include <sys/ioctl.h>
static const char more_usage[] = "[file ...]";
/* ED: sparc termios is broken: revert back to old termio handling. */
#ifdef BB_MORE_TERM
#ifdef BB_FEATURE_USE_TERMIOS
#if #cpu(sparc)
# define USE_OLD_TERMIO
# include <termio.h>
# include <sys/ioctl.h>
# define termios termio
# define stty(fd,argp) ioctl(fd,TCSETAF,argp)
#else
@@ -57,16 +57,35 @@ static const char more_usage[] = "[file ...]";
void gotsig(int sig) {
stty(fileno(cin), &initial_settings);
fprintf(stdout, "\n");
exit( TRUE);
}
#endif
#define TERMINAL_WIDTH 79 /* not 80 in case terminal has linefold bug */
#define TERMINAL_HEIGHT 24
#if defined BB_FEATURE_AUTOWIDTH && ! defined USE_OLD_TERMIO
static int terminal_width = 0, terminal_height = 0;
#else
#define terminal_width TERMINAL_WIDTH
#define terminal_height TERMINAL_HEIGHT
#endif
extern int more_main(int argc, char **argv)
{
int c, lines=0, input=0;
int next_page=0;
struct stat st;
FILE *file;
#ifdef BB_FEATURE_AUTOWIDTH
struct winsize win;
#endif
argc--;
argv++;
@@ -87,7 +106,7 @@ extern int more_main(int argc, char **argv)
}
fstat(fileno(file), &st);
#ifdef BB_MORE_TERM
#ifdef BB_FEATURE_USE_TERMIOS
cin = fopen("/dev/tty", "r");
if (!cin)
cin = fopen("/dev/console", "r");
@@ -100,12 +119,19 @@ extern int more_main(int argc, char **argv)
new_settings.c_lflag &= ~ICANON;
new_settings.c_lflag &= ~ECHO;
stty(fileno(cin), &new_settings);
#ifdef BB_FEATURE_AUTOWIDTH
ioctl(STDOUT_FILENO, TIOCGWINSZ, &win);
if (win.ws_row > 4)
terminal_height = win.ws_row - 2;
if (win.ws_col > 0)
terminal_width = win.ws_col - 1;
#endif
(void) signal(SIGINT, gotsig);
(void) signal(SIGQUIT, gotsig);
(void) signal(SIGTERM, gotsig);
#endif
while ((c = getc(file)) != EOF) {
if ( next_page ) {
@@ -119,7 +145,7 @@ extern int more_main(int argc, char **argv)
st.st_size);
}
len += fprintf(stdout, "%s",
#ifdef BB_MORE_TERM
#ifdef BB_FEATURE_USE_TERMIOS
""
#else
"\n"
@@ -129,24 +155,31 @@ extern int more_main(int argc, char **argv)
fflush(stdout);
input = getc( cin);
#ifdef BB_MORE_TERM
#ifdef BB_FEATURE_USE_TERMIOS
/* Erase the "More" message */
while(len-- > 0)
while(--len >= 0)
putc('\b', stdout);
while(len++ < 79)
while(++len <= terminal_width)
putc(' ', stdout);
while(len-- > 0)
while(--len >= 0)
putc('\b', stdout);
fflush(stdout);
#endif
}
if (input=='q')
goto end;
if (input=='\n' && c == '\n' )
next_page = 1;
if ( c == ' ' && ++lines == 24 )
next_page = 1;
if (c == '\n' ) {
switch(input) {
case 'q':
goto end;
case '\n':
/* increment by just one line if we are at
* the end of this line*/
next_page = 1;
break;
}
if ( ++lines == terminal_height )
next_page = 1;
}
putc(c, stdout);
}
fclose(file);
@@ -155,7 +188,7 @@ extern int more_main(int argc, char **argv)
argv++;
} while (--argc > 0);
end:
#ifdef BB_MORE_TERM
#ifdef BB_FEATURE_USE_TERMIOS
gotsig(0);
#endif
exit(TRUE);