Fix func prototype

[oweals/busybox.git] / more.c

diff --git a/more.c b/more.c
index 298e1cfb19813657a43afaa6bb0a82f0d2ce9e83..f8b17b34afac0821814da2954037e07345fdcf25 100644 (file)
--- a/more.c
+++ b/more.c
@@ -67,10 +67,11 @@ static int terminal_height = 24;
 
 extern int more_main(int argc, char **argv)
 {
-       int c, lines = 0, input = 0;
-       int please_display_more_prompt = 0;
+       int c, lines, input = 0;
+       int please_display_more_prompt;
        struct stat st;
        FILE *file;
+       int len, page_height;
 
 #if defined BB_FEATURE_AUTOWIDTH && defined BB_FEATURE_USE_TERMIOS
        struct winsize win = { 0, 0, 0, 0 };
@@ -112,12 +113,13 @@ extern int more_main(int argc, char **argv)
                (void) signal(SIGTERM, gotsig);
 
 #endif
+               len=0;
+               lines = 0;
+               page_height = terminal_height;
+               please_display_more_prompt = 0;
                while ((c = getc(file)) != EOF) {
-                       if (please_display_more_prompt) {
-                               int len = 0;
 
-                               please_display_more_prompt = 0;
-                               lines = 0;
+                       if (please_display_more_prompt) {
                                len = printf("--More-- ");
                                if (file != stdin) {
 #if _FILE_OFFSET_BITS == 64
@@ -160,13 +162,16 @@ extern int more_main(int argc, char **argv)
                                        putc('\b', stdout);
                                fflush(stdout);
 #endif
-
+                               len=0;
+                               lines = 0;
+                               page_height = terminal_height;
+                               please_display_more_prompt = 0;
                        }
 
                        /* 
                         * There are two input streams to worry about here:
                         *
-                        *     c : the character we are reading from the file being "mored"
+                        * c     : the character we are reading from the file being "mored"
                         * input : a character received from the keyboard
                         *
                         * If we hit a newline in the _file_ stream, we want to test and
@@ -183,14 +188,28 @@ extern int more_main(int argc, char **argv)
                                        please_display_more_prompt = 1;
                                        break;
                                }
-                               if (++lines == terminal_height)
+                               /* Adjust the terminal height for any overlap, so that
+                                * no lines get lost off the top. */
+                               if (len >= terminal_width) {
+                                       div_t result = div( len, terminal_width); 
+                                       if (result.quot) {
+                                               if (result.rem)
+                                                       page_height-=result.quot;
+                                               else
+                                                       page_height-=(result.quot-1);
+                                       }
+                               }
+                               if (++lines >= page_height) {
                                        please_display_more_prompt = 1;
+                               }
+                               len=0;
                        }
                        /*
                         * If we just read a newline from the file being 'mored' and any
                         * key other than a return is hit, scroll by one page
                         */
                        putc(c, stdout);
+                       len++;
                }
                fclose(file);
                fflush(stdout);