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#include "internal.h"
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <fcntl.h>
#define BB_MORE_TERM
#ifdef BB_MORE_TERM
#include <termios.h>
#include <signal.h>
FILE *cin;
struct termios initial_settings, new_settings;
void gotsig(int sig) {
tcsetattr(fileno(cin), TCSANOW, &initial_settings);
exit(0);
}
#endif
const char more_usage[] = "more [file]\n"
"\n"
"\tDisplays a file, one page at a time.\n"
"\tIf there are no arguments, the standard input is displayed.\n";
extern int
more_fn(const struct FileInfo * i)
{
FILE * f = stdin;
int c;
int lines = 0, tlines = 0;
int next_page = 0;
int rows = 24, cols = 79;
#ifdef BB_MORE_TERM
long sizeb = 0;
struct stat st;
struct winsize win;
#endif
if ( i ) {
if (! (f = fopen(i->source, "r") )) {
name_and_error(i->source);
return 1;
}
fstat(fileno(f), &st);
sizeb = st.st_size / 100;
}
#ifdef BB_MORE_TERM
cin = fopen("/dev/tty", "r");
tcgetattr(fileno(cin),&initial_settings);
new_settings = initial_settings;
new_settings.c_lflag &= ~ICANON;
new_settings.c_lflag &= ~ECHO;
tcsetattr(fileno(cin), TCSANOW, &new_settings);
(void) signal(SIGINT, gotsig);
ioctl(STDOUT_FILENO, TIOCGWINSZ, &win);
if (win.ws_row > 4) rows = win.ws_row - 2;
if (win.ws_col > 0) cols = win.ws_col - 1;
#endif
while ( (c = getc(f)) != EOF ) {
if ( next_page ) {
char garbage;
int len;
tlines += lines;
lines = 0;
next_page = 0; //Percentage is based on bytes, not lines.
if ( i && i->source ) //It is not very acurate, but still useful.
len = printf("%s - %%%2ld - line: %d", i->source, (ftell(f) - sizeb - sizeb) / sizeb, tlines);
else
len = printf("line: %d", tlines);
fflush(stdout);
#ifndef BB_MORE_TERM
read(2, &garbage, 1);
#else
do {
fread(&garbage, 1, 1, cin);
} while ((garbage != ' ') && (garbage != '\n'));
if (garbage == '\n') {
lines = rows;
tlines -= rows;
}
garbage = 0;
//clear line, since tabs don't overwrite.
while(len-- > 0) putchar('\b');
while(len++ < cols) putchar(' ');
while(len-- > 0) putchar('\b');
fflush(stdout);
#endif
}
putchar(c);
if ( c == '\n' && ++lines == (rows + 1) )
next_page = 1;
}
if ( f != stdin )
fclose(f);
#ifdef BB_MORE_TERM
gotsig(0);
#endif
return 0;
}
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