1 /* 2 * progress.c - Numeric progress meter 3 * 4 * Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 5 * 2003, 2004, 2005 by Theodore Ts'o. 6 * 7 * %Begin-Header% 8 * This file may be redistributed under the terms of the GNU Public 9 * License. 10 * %End-Header% 11 */ 12 13 #include "ext2fs.h" 14 #include "ext2fsP.h" 15 16 #include <time.h> 17 18 static char spaces[80], backspaces[80]; 19 static time_t last_update; 20 21 static int int_log10(unsigned int arg) 22 { 23 int l; 24 25 for (l=0; arg ; l++) 26 arg = arg / 10; 27 return l; 28 } 29 30 void ext2fs_numeric_progress_init(ext2_filsys fs, 31 struct ext2fs_numeric_progress_struct * progress, 32 const char *label, __u64 max) 33 { 34 /* 35 * The PRINT_PROGRESS flag turns on or off ALL 36 * progress-related messages, whereas the SKIP_PROGRESS 37 * environment variable prints the start and end messages but 38 * not the numeric countdown in the middle. 39 */ 40 if (!(fs->flags & EXT2_FLAG_PRINT_PROGRESS)) 41 return; 42 43 memset(spaces, ' ', sizeof(spaces)-1); 44 spaces[sizeof(spaces)-1] = 0; 45 memset(backspaces, '\b', sizeof(backspaces)-1); 46 backspaces[sizeof(backspaces)-1] = 0; 47 48 memset(progress, 0, sizeof(*progress)); 49 if (getenv("E2FSPROGS_SKIP_PROGRESS")) 50 progress->skip_progress++; 51 52 53 /* 54 * Figure out how many digits we need 55 */ 56 progress->max = max; 57 progress->log_max = int_log10(max); 58 59 if (label) { 60 fputs(label, stdout); 61 fflush(stdout); 62 } 63 last_update = 0; 64 } 65 66 void ext2fs_numeric_progress_update(ext2_filsys fs, 67 struct ext2fs_numeric_progress_struct * progress, 68 __u64 val) 69 { 70 time_t now; 71 72 if (!(fs->flags & EXT2_FLAG_PRINT_PROGRESS)) 73 return; 74 if (progress->skip_progress) 75 return; 76 now = time(0); 77 if (now == last_update) 78 return; 79 last_update = now; 80 81 printf("%*llu/%*llu", progress->log_max, val, 82 progress->log_max, progress->max); 83 fprintf(stdout, "%.*s", (2*progress->log_max)+1, backspaces); 84 } 85 86 void ext2fs_numeric_progress_close(ext2_filsys fs, 87 struct ext2fs_numeric_progress_struct * progress, 88 const char *message) 89 { 90 if (!(fs->flags & EXT2_FLAG_PRINT_PROGRESS)) 91 return; 92 fprintf(stdout, "%.*s", (2*progress->log_max)+1, spaces); 93 fprintf(stdout, "%.*s", (2*progress->log_max)+1, backspaces); 94 if (message) 95 fputs(message, stdout); 96 } 97
