8bea7c39b4
Certain streams can now be opened by name by prefixing the name
with a colon (':'). The only supported named stream at the moment
is :fb, which streams to/from the background framebuffer.
A new syscall called `get_size` was also added, which should be used
instead of `ryfs_get_size`. This new syscall supports getting the size
of streams.
88 lines
2.3 KiB
NASM
88 lines
2.3 KiB
NASM
; dir command
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shell_dir_command_string: data.strz "dir"
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shell_dir_command:
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mov r0, shell_dir_command_header_string
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call print_str_to_terminal
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call get_current_disk_id
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mov r1, r0
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mov r0, shell_dir_command_list_buffer
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call ryfs_get_file_list
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cmp r0, 0
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ifz ret
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mov r31, r0
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mov r3, 0
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shell_dir_command_loop:
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; copy one file name from the list buffer to the file buffer
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mov r0, shell_dir_command_list_buffer
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add r0, r3
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mov r1, shell_dir_command_file_buffer
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mov r2, 8
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call copy_memory_bytes
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add r1, 8
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mov.8 [r1], 0
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; copy file type from the list buffer to the type buffer
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mov r0, shell_dir_command_list_buffer
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add r0, r3
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add r0, 8
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mov r1, shell_dir_command_type_buffer
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mov r2, 3
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call copy_memory_bytes
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add r1, 3
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mov.8 [r1], 0
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; print the file name to the terminal
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mov r0, shell_dir_command_file_buffer
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call print_str_to_terminal
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; space
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mov r0, ' '
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call print_character_to_terminal
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; print the file type to the terminal
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mov r0, shell_dir_command_type_buffer
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call print_str_to_terminal
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; two spaces
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mov r0, ' '
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call print_character_to_terminal
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call print_character_to_terminal
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; get and print the file size
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; call ryfs_open instead of open because this uses the internal filename style
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call get_current_disk_id
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mov r1, r0
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mov r0, shell_dir_command_list_buffer
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add r0, r3
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mov r2, shell_dir_command_temp_file_struct
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call ryfs_open
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cmp r0, 0
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ifz jmp shell_dir_command_failed_to_open_file
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mov r0, shell_dir_command_temp_file_struct
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call get_size
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call print_decimal_to_terminal
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shell_dir_command_failed_to_open_file:
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; new line
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mov r0, 10
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call print_character_to_terminal
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; point to next file name in the buffer
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add r3, 11
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loop shell_dir_command_loop
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ret
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shell_dir_command_list_buffer: data.fill 0, 341
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shell_dir_command_file_buffer: data.fill 0, 9
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shell_dir_command_type_buffer: data.fill 0, 4
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shell_dir_command_temp_file_struct: data.fill 0, 32
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shell_dir_command_header_string:
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data.8 SET_COLOR data.8 0x20 data.8 1 ; set the color to green
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data.str "file type size" data.8 10
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data.8 SET_COLOR data.8 0x70 data.8 1 ; set the color to white
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data.8 0
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