mirror of
https://github.com/TerryCavanagh/VVVVVV.git
synced 2024-06-01 18:43:33 +02:00
3fc23f2b2c
This adds the `-console` command-line option (for Win32 only) so the game can spawn an attached console window which will contain all console output. This is to make it easier for people to debug on Windows systems. Otherwise, the only way to get console output would be to either compile the application as a console app (i.e. switch the subsystem to console) - which is undesirable for regular users as this makes it so a console is always spawned even when unwanted - or launch the game with shell arguments that make it so output is redirected to a file. As a result, color checking support is factored out of vlog_init() into its own function, even though we don't support colors on Windows.
189 lines
3.5 KiB
C
189 lines
3.5 KiB
C
#include <SDL_stdinc.h>
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#include <stdarg.h>
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#include <stdio.h>
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#ifdef _WIN32
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# define WIN32_LEAN_AND_MEAN
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# include <windows.h>
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# define STDOUT_IS_TTY 0
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# define STDERR_IS_TTY 0
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#elif defined(__unix__) || defined(__APPLE__)
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# include <unistd.h>
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# define STDOUT_IS_TTY isatty(STDOUT_FILENO)
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# define STDERR_IS_TTY isatty(STDERR_FILENO)
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#else
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# define STDOUT_IS_TTY 0
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# define STDERR_IS_TTY 0
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#endif
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#define COLOR(EXPR) color_enabled ? EXPR : ""
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#define Color_RESET COLOR("\x1b[0m")
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#define Color_BOLD COLOR("\x1b[1m")
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#define Color_BOLD_YELLOW COLOR("\x1b[1;33m")
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#define Color_BOLD_RED COLOR("\x1b[1;31m")
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#define Color_BOLD_GRAY COLOR("\x1b[1;90m")
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static int output_enabled = 1;
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static int color_enabled = 0;
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static int debug_enabled = 0;
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static int info_enabled = 1;
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static int warn_enabled = 1;
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static int error_enabled = 1;
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static void check_color_support(void)
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{
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if (STDOUT_IS_TTY && STDERR_IS_TTY)
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{
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color_enabled = 1;
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}
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}
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void vlog_init(void)
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{
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check_color_support();
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}
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void vlog_toggle_output(const int enable_output)
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{
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output_enabled = enable_output;
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}
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void vlog_toggle_color(const int enable_color)
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{
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color_enabled = enable_color;
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}
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void vlog_toggle_debug(const int enable_debug)
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{
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debug_enabled = enable_debug;
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}
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void vlog_toggle_info(const int enable_info)
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{
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info_enabled = enable_info;
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}
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void vlog_toggle_warn(const int enable_warn)
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{
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warn_enabled = enable_warn;
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}
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void vlog_toggle_error(const int enable_error)
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{
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error_enabled = enable_error;
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}
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SDL_PRINTF_VARARG_FUNC(1) void vlog_debug(const char* text, ...)
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{
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va_list list;
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if (!output_enabled || !debug_enabled)
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{
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return;
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}
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printf(Color_BOLD_GRAY);
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printf("[DEBUG]");
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printf(Color_RESET);
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printf(" ");
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va_start(list, text);
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vprintf(text, list);
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va_end(list);
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putchar('\n');
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}
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SDL_PRINTF_VARARG_FUNC(1) void vlog_info(const char* text, ...)
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{
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va_list list;
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if (!output_enabled || !info_enabled)
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{
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return;
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}
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printf(Color_BOLD);
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printf("[INFO]");
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printf(Color_RESET);
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printf(" ");
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va_start(list, text);
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vprintf(text, list);
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va_end(list);
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putchar('\n');
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}
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SDL_PRINTF_VARARG_FUNC(1) void vlog_warn(const char* text, ...)
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{
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va_list list;
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if (!output_enabled || !warn_enabled)
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{
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return;
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}
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fprintf(stderr, Color_BOLD_YELLOW);
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fprintf(stderr, "[WARN]");
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fprintf(stderr, Color_RESET);
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fprintf(stderr, " ");
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va_start(list, text);
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vfprintf(stderr, text, list);
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va_end(list);
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fputc('\n', stderr);
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}
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SDL_PRINTF_VARARG_FUNC(1) void vlog_error(const char* text, ...)
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{
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va_list list;
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if (!output_enabled || !error_enabled)
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{
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return;
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}
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fprintf(stderr, Color_BOLD_RED);
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fprintf(stderr, "[ERROR]");
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fprintf(stderr, Color_RESET);
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fprintf(stderr, " ");
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va_start(list, text);
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vfprintf(stderr, text, list);
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va_end(list);
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fputc('\n', stderr);
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}
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#ifdef _WIN32
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void vlog_open_console(void)
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{
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static int run_once = 0;
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if (run_once)
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{
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return;
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}
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run_once = 1;
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const BOOL success = AllocConsole();
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if (!success)
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{
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/* Debug, not error, because it might not be an error.
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* (E.g. there is already an attached console.) */
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vlog_debug(
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"Could not open console: AllocConsole() failed with %d",
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GetLastError()
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);
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return;
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}
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freopen("CON", "w", stdout);
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freopen("CON", "w", stderr);
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check_color_support();
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}
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#endif /* _WIN32 */
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