more: fix for case when _FILE_OFFSET_BITS is not #defined.
authorDenis Vlasenko <vda.linux@googlemail.com>
Sun, 10 Dec 2006 01:57:29 +0000 (01:57 -0000)
committerDenis Vlasenko <vda.linux@googlemail.com>
Sun, 10 Dec 2006 01:57:29 +0000 (01:57 -0000)
samll size improvement.

util-linux/more.c

index 85209ce61b362c17c7a568abe3b0c22c8e05076d..d048ace92d93b36feaa7880b6a050da9e2bac280 100644 (file)
 #include "busybox.h"
 
 
-#ifdef CONFIG_FEATURE_USE_TERMIOS
+#if ENABLE_FEATURE_USE_TERMIOS
 static int cin_fileno;
 #include <termios.h>
-#define setTermSettings(fd,argp) tcsetattr(fd,TCSANOW,argp)
-#define getTermSettings(fd,argp) tcgetattr(fd, argp);
+#define setTermSettings(fd, argp) tcsetattr(fd, TCSANOW, argp)
+#define getTermSettings(fd, argp) tcgetattr(fd, argp);
 
 static struct termios initial_settings, new_settings;
 
@@ -35,7 +35,7 @@ static void gotsig(int sig)
        putchar('\n');
        exit(EXIT_FAILURE);
 }
-#endif /* CONFIG_FEATURE_USE_TERMIOS */
+#endif /* FEATURE_USE_TERMIOS */
 
 
 int more_main(int argc, char **argv)
@@ -52,14 +52,14 @@ int more_main(int argc, char **argv)
        argc--;
        argv++;
 
-
-       /* not use inputing from terminal if usage: more > outfile */
-       if(isatty(STDOUT_FILENO)) {
+       cin = stdin;
+       /* use input from terminal unless we do "more >outfile" */
+       if (isatty(STDOUT_FILENO)) {
                cin = fopen(CURRENT_TTY, "r");
                if (!cin)
                        cin = xfopen(CONSOLE_DEV, "r");
                please_display_more_prompt = 2;
-#ifdef CONFIG_FEATURE_USE_TERMIOS
+#if ENABLE_FEATURE_USE_TERMIOS
                cin_fileno = fileno(cin);
                getTermSettings(cin_fileno, &initial_settings);
                new_settings = initial_settings;
@@ -69,21 +69,19 @@ int more_main(int argc, char **argv)
                new_settings.c_cc[VTIME] = 0;
                setTermSettings(cin_fileno, &new_settings);
                atexit(set_tty_to_initial_mode);
-               (void) signal(SIGINT, gotsig);
-               (void) signal(SIGQUIT, gotsig);
-               (void) signal(SIGTERM, gotsig);
+               signal(SIGINT, gotsig);
+               signal(SIGQUIT, gotsig);
+               signal(SIGTERM, gotsig);
 #endif
-       } else {
-               cin = stdin;
        }
 
        do {
-               if (argc == 0) {
-                       file = stdin;
-               } else
+               file = stdin;
+               if (argc != 0) {
                        file = fopen_or_warn(*argv, "r");
-               if(file==0)
-                       goto loop;
+                       if (!file)
+                               goto loop;
+               }
 
                st.st_size = 0;
                fstat(fileno(file), &st);
@@ -96,7 +94,7 @@ int more_main(int argc, char **argv)
                if (terminal_width > 0)
                        terminal_width -= 1;
 
-               len=0;
+               len = 0;
                lines = 0;
                page_height = terminal_height;
                while ((c = getc(file)) != EOF) {
@@ -104,17 +102,10 @@ int more_main(int argc, char **argv)
                        if ((please_display_more_prompt & 3) == 3) {
                                len = printf("--More-- ");
                                if (file != stdin && st.st_size > 0) {
-#if _FILE_OFFSET_BITS == 64
-                                       len += printf("(%d%% of %lld bytes)",
-                                                  (int) (100 * ((double) ftell(file) /
-                                                  (double) st.st_size)), (long long)st.st_size);
-#else
-                                       len += printf("(%d%% of %ld bytes)",
-                                                  (int) (100 * ((double) ftell(file) /
-                                                  (double) st.st_size)), (long)st.st_size);
-#endif
+                                       len += printf("(%d%% of %"OFF_FMT"d bytes)",
+                                               (int) (ftello(file)*100 / st.st_size),
+                                               st.st_size);
                                }
-
                                fflush(stdout);
 
                                /*
@@ -122,15 +113,12 @@ int more_main(int argc, char **argv)
                                 * to get input from the user.
                                 */
                                input = getc(cin);
-#ifndef CONFIG_FEATURE_USE_TERMIOS
+#if !ENABLE_FEATURE_USE_TERMIOS
                                printf("\033[A"); /* up cursor */
 #endif
                                /* Erase the "More" message */
-                               putc('\r', stdout);
-                               while (--len >= 0)
-                                       putc(' ', stdout);
-                               putc('\r', stdout);
-                               len=0;
+                               printf("\r%*s\r", len, "");
+                               len = 0;
                                lines = 0;
                                page_height = terminal_height;
                                please_display_more_prompt &= ~1;
@@ -162,15 +150,15 @@ int more_main(int argc, char **argv)
                                        rem  = len - (quot * terminal_width);
                                        if (quot) {
                                                if (rem)
-                                                       page_height-=quot;
+                                                       page_height -= quot;
                                                else
-                                                       page_height-=(quot-1);
+                                                       page_height -= (quot - 1);
                                        }
                                }
                                if (++lines >= page_height) {
                                        please_display_more_prompt |= 1;
                                }
-                               len=0;
+                               len = 0;
                        }
                        /*
                         * If we just read a newline from the file being 'mored' and any
@@ -181,9 +169,9 @@ int more_main(int argc, char **argv)
                }
                fclose(file);
                fflush(stdout);
-loop:
+ loop:
                argv++;
        } while (--argc > 0);
 end:
+ end:
        return 0;
 }