diff options
Diffstat (limited to 'user/hexview.c')
| -rw-r--r-- | user/hexview.c | 32 |
1 files changed, 27 insertions, 5 deletions
diff --git a/user/hexview.c b/user/hexview.c index 6354338..c211b44 100644 --- a/user/hexview.c +++ b/user/hexview.c @@ -19,12 +19,22 @@ static void put_hex32(unsigned long value) #define PAGE 256 #define COLS 16 -void _start(void) +void _start(const char* arg, unsigned long arglen) { - put("hexview, type a filename\nfile: "); char name[64]; - read_line(name, 64); - put("\n"); + + if (arglen > 0 && arglen < 64) + { + for (unsigned long i = 0; i < arglen; i++) + name[i] = arg[i]; + name[arglen] = 0; + } + else + { + put("hexview, type a filename\nfile: "); + read_line(name, 64); + put("\n"); + } long size = sys_fs_size(name); if (size < 0) @@ -35,6 +45,7 @@ void _start(void) unsigned long offset = 0; char buffer[PAGE]; + for (;;) { long count = sys_fs_read(name, offset, buffer, PAGE); @@ -61,6 +72,7 @@ void _start(void) else put(" "); } + put(" "); for (int column = 0; column < COLS && row + column < count; column++) { @@ -73,8 +85,18 @@ void _start(void) put("\n"); } - put("[n]ext [p]rev [q]uit > "); + put("[n]ext [p]rev [q]uit (or up/down arrows) > "); char key = (char)sys_read(); + if (key == 27) // ESC + { + sys_read(); + char final = (char)sys_read(); + if (final == 'A') + key = 'p'; + else if (final == 'B') + key = 'n'; + } + put("\n"); if (key == 'q') break; |