mirror of
https://github.com/LadybirdBrowser/ladybird.git
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138 lines
4.3 KiB
C++
138 lines
4.3 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/Debug.h>
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#include <AK/HashMap.h>
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#include <AK/String.h>
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#include <AK/Vector.h>
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#include <assert.h>
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#include <string.h>
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#include <termcap.h>
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extern "C" {
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char PC;
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char* UP;
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char* BC;
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int __attribute__((weak)) tgetent([[maybe_unused]] char* bp, [[maybe_unused]] char const* name)
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{
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warnln_if(TERMCAP_DEBUG, "tgetent: bp={:p}, name='{}'", bp, name);
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PC = '\0';
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BC = const_cast<char*>("\033[D");
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UP = const_cast<char*>("\033[A");
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return 1;
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}
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static HashMap<String, char const*>* caps = nullptr;
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static void ensure_caps()
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{
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if (caps)
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return;
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caps = new HashMap<String, char const*>;
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caps->set("DC"_short_string, "\033[%p1%dP");
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caps->set("IC"_short_string, "\033[%p1%d@");
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caps->set("ce"_short_string, "\033[K");
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caps->set("cl"_short_string, "\033[H\033[J");
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caps->set("cr"_short_string, "\015");
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caps->set("dc"_short_string, "\033[P");
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caps->set("ei"_short_string, "");
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caps->set("ic"_short_string, "");
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caps->set("im"_short_string, "");
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caps->set("kd"_short_string, "\033[B");
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caps->set("kl"_short_string, "\033[D");
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caps->set("kr"_short_string, "\033[C");
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caps->set("ku"_short_string, "\033[A");
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caps->set("ks"_short_string, "");
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caps->set("ke"_short_string, "");
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caps->set("le"_short_string, "\033[D");
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caps->set("mm"_short_string, "");
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caps->set("mo"_short_string, "");
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caps->set("pc"_short_string, "");
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caps->set("up"_short_string, "\033[A");
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caps->set("vb"_short_string, "");
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caps->set("am"_short_string, "");
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caps->set("@7"_short_string, "");
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caps->set("kH"_short_string, "");
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caps->set("kI"_short_string, "\033[L");
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caps->set("kh"_short_string, "\033[H");
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caps->set("vs"_short_string, "");
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caps->set("ve"_short_string, "");
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caps->set("E3"_short_string, "");
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caps->set("kD"_short_string, "");
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caps->set("nd"_short_string, "\033[C");
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caps->set("co"_short_string, "80");
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caps->set("li"_short_string, "25");
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}
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// Unfortunately, tgetstr() doesn't accept a size argument for the buffer
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// pointed to by area, so we have to use bare strcpy().
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#pragma GCC diagnostic push
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#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
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char* __attribute__((weak)) tgetstr(char const* id, char** area)
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{
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ensure_caps();
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warnln_if(TERMCAP_DEBUG, "tgetstr: id='{}'", id);
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auto it = caps->find(StringView { id, strlen(id) });
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if (it != caps->end()) {
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char* ret = *area;
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char const* val = (*it).value;
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strcpy(*area, val);
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*area += strlen(val) + 1;
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return ret;
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}
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warnln_if(TERMCAP_DEBUG, "tgetstr: missing cap id='{}'", id);
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return nullptr;
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}
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#pragma GCC diagnostic pop
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int __attribute__((weak)) tgetflag([[maybe_unused]] char const* id)
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{
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warnln_if(TERMCAP_DEBUG, "tgetflag: '{}'", id);
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auto it = caps->find(StringView { id, strlen(id) });
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if (it != caps->end())
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return 1;
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return 0;
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}
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int __attribute__((weak)) tgetnum(char const* id)
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{
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warnln_if(TERMCAP_DEBUG, "tgetnum: '{}'", id);
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auto it = caps->find(StringView { id, strlen(id) });
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if (it != caps->end())
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return atoi((*it).value);
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return -1;
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}
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static Vector<char> s_tgoto_buffer;
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char* __attribute__((weak)) tgoto([[maybe_unused]] char const* cap, [[maybe_unused]] int col, [[maybe_unused]] int row)
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{
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auto row_string = String::number(row);
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auto column_string = String::number(col);
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if (row_string.is_error() || column_string.is_error()) {
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// According to Linux man pages (https://man7.org/linux/man-pages/man3/tgoto.3x.html) we apparently don't have to set errno.
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return nullptr;
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}
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auto cap_str = StringView { cap, strlen(cap) }.replace("%p1%d"sv, column_string.release_value(), ReplaceMode::FirstOnly).replace("%p2%d"sv, row_string.release_value(), ReplaceMode::FirstOnly);
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s_tgoto_buffer.clear_with_capacity();
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s_tgoto_buffer.ensure_capacity(cap_str.length());
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(void)cap_str.copy_characters_to_buffer(s_tgoto_buffer.data(), cap_str.length());
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return s_tgoto_buffer.data();
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}
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int __attribute__((weak)) tputs(char const* str, [[maybe_unused]] int affcnt, int (*putc)(int))
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{
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size_t len = strlen(str);
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for (size_t i = 0; i < len; ++i)
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putc(str[i]);
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return 0;
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}
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}
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