diff options
Diffstat (limited to 'src/user/knob/user.c')
| -rw-r--r-- | src/user/knob/user.c | 134 |
1 files changed, 134 insertions, 0 deletions
diff --git a/src/user/knob/user.c b/src/user/knob/user.c new file mode 100644 index 0000000..fb39851 --- /dev/null +++ b/src/user/knob/user.c @@ -0,0 +1,134 @@ +#include <pland/syscall.h> +#include <stdint.h> +#include <stdbool.h> + +static const uint8_t caps_and_shift[] = { + 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, + 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, + 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, + 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, + 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x22, + 0x28, 0x29, 0x2a, 0x2b, 0x3c, 0x5f, 0x3e, 0x3f, + 0x29, 0x21, 0x40, 0x23, 0x24, 0x25, 0x5e, 0x26, + 0x2a, 0x28, 0x3a, 0x3a, 0x3c, 0x2d, 0x3e, 0x3f, + + 0x40, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, + 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, + 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, + 0x78, 0x79, 0x7a, 0x57, 0x7c, 0x7d, 0x5e, 0x5f, + 0x7e, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, + 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, + 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, + 0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x00 + + //TODO: higher +}; + +static const uint8_t caps_no_shift[] = { + 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, + 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, + 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, + 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, + 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, + 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, + 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, + 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, + + 0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, + 0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f, + 0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, + 0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f, + 0x60, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, + 0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f, + 0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, + 0x58, 0x59, 0x5a, 0x7b, 0x7c, 0x7d, 0x7e, 0x00 + + //TODO: higher +}; + +static const uint8_t shifted[] = { + 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, + 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, + 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, + 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, + 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x22, + 0x28, 0x29, 0x2a, 0x2b, 0x3c, 0x5f, 0x3e, 0x3f, + 0x29, 0x21, 0x40, 0x23, 0x24, 0x25, 0x5e, 0x26, + 0x2a, 0x28, 0x3a, 0x3a, 0x3c, 0x2d, 0x3e, 0x3f, + + 0x40, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, + 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, + 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, + 0x78, 0x79, 0x7a, 0x57, 0x7c, 0x7d, 0x5e, 0x5f, + 0x7e, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, + 0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f, + 0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, + 0x58, 0x59, 0x5a, 0x7b, 0x7c, 0x7d, 0x7e, 0x00 + + //TODO: higher +}; + +static char get_key_char() { + _key_code_t key; + while (!(key = _get_key())) + _yield_task(); + return (char)( + (key & (_KEY_ALT | _KEY_CTRL | _KEY_META)) + ? 0 + : (key & _KEY_CAPS) + ? (key & _KEY_SHIFT) + ? caps_and_shift[key & 0xff] + : caps_no_shift[key & 0xff] + : (key & _KEY_SHIFT) + ? shifted[key & 0xff] + : (key & 0x80) + ? 0 + : (key & 0x7f) + ); +} + +void tell_user_sz(const char *sz) { + _log_string(sz); +} + +void tell_user_n(uint32_t n) { + char buf[11]; + char *buf_ptr = buf; + bool zero_yet = false; + for (uint32_t d = 1000000000U; d; d /= 10) { + uint8_t v = (n / d ) % 10; + if (v || zero_yet) { + zero_yet = true; + *buf_ptr++ = v | '0'; + } + } + if (buf_ptr == buf) + *buf_ptr++ = '0'; + *buf_ptr = '\0'; + tell_user_sz(buf); +} + +//return value and max_length don't include null terminator +uint32_t ask_user_line_sz(char *sz, uint32_t max_length) { + char log_buf[2]; + log_buf[1] = '\0'; + + uint32_t i; + for (i = 0; i != max_length; ++i) { + char key = get_key_char(); + if (key) { + log_buf[0] = key; + _log_string(log_buf); + + if (key == '\b') + i -= i ? 2 : 1; + else if (key == '\n') + break; + else + sz[i] = key; + } + } + + sz[i] = '\0'; + return i; +}
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