1 files changed, 110 insertions, 0 deletions

diff --git a/more.c b/more.c
new file mode 100644
index 000000000..65409999b
--- /dev/null
+++ b/more.c
@@ -0,0 +1,110 @@
+#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;
+}