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banan-os
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Userspace: add ^L support for shell

This commit is contained in:
Bananymous 2023-06-09 01:24:08 +03:00
parent 97c7fc42d1
commit 2c18adbddd
1 changed files with 11 additions and 4 deletions
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15
userspace/Shell/main.cpp
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@ -64,7 +64,7 @@ int execute_command(BAN::StringView command)
return 0;
}
int prompt_length(BAN::StringView prompt)
int character_length(BAN::StringView prompt)
{
int length { 0 };
bool in_escape { false };
@ -79,7 +79,7 @@ int prompt_length(BAN::StringView prompt)
{
if (c == '\e')
in_escape = true;
else
else if (((uint8_t)c & 0xC0) != 0x80)
length++;
}
}
@ -150,12 +150,19 @@ int main(int argc, char** argv)
fread(&ch, 1, sizeof(char), stdin);
switch (ch)
{
case 'A': if (index > 0) { index--; col = buffers[index].size(); fprintf(stdout, "\e[%dG%s\e[K", prompt_length(prompt) + 1, buffers[index].data()); fflush(stdout); } break;
case 'B': if (index < buffers.size() - 1) { index++; col = buffers[index].size(); fprintf(stdout, "\e[%dG%s\e[K", prompt_length(prompt) + 1, buffers[index].data()); fflush(stdout); } break;
case 'A': if (index > 0) { index--; col = buffers[index].size(); fprintf(stdout, "\e[%dG%s\e[K", character_length(prompt) + 1, buffers[index].data()); fflush(stdout); } break;
case 'B': if (index < buffers.size() - 1) { index++; col = buffers[index].size(); fprintf(stdout, "\e[%dG%s\e[K", character_length(prompt) + 1, buffers[index].data()); fflush(stdout); } break;
case 'C': if (col < buffers[index].size()) { col++; while ((buffers[index][col - 1] & 0xC0) == 0x80) col++; fprintf(stdout, "\e[C"); fflush(stdout); } break;
case 'D': if (col > 0) { while ((buffers[index][col - 1] & 0xC0) == 0x80) col--; col--; fprintf(stdout, "\e[D"); fflush(stdout); } break;
}
break;
case '\x0C': // ^L
{
int x = character_length(prompt) + character_length(buffers[index].sv().substring(col)) + 1;
fprintf(stdout, "\e[H\e[J%s%s\e[u\e[1;%dH", prompt.data(), buffers[index].data(), x);
fflush(stdout);
break;
}
case '\b':
if (col > 0)
{