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//
// Command Line Arguments Handling code for the Fast Light Tool Kit (FLTK).
//
// Copyright 1998-2025 by Bill Spitzak and others.
//
// This library is free software. Distribution and use rights are outlined in
// the file "COPYING" which should have been included with this file. If this
// file is missing or damaged, see the license at:
//
// https://www.fltk.org/COPYING.php
//
// Please see the following page on how to report bugs and issues:
//
// https://www.fltk.org/bugs.php
//
#include "app/args.h"
#include "Fluid.h"
#include <FL/Fl.H>
#include <FL/filename.H>
#include <FL/fl_ask.H>
#include <string.h>
#include "../src/flstring.h"
Args::Args()
: update_file(0),
compile_file(0),
compile_strings(0),
show_version(0)
{
code_filename[0] = '\0';
header_filename[0] = '\0';
autodoc_path[0] = '\0';
}
/**
Load args from command line into variables.
\param[in] argc number of arguments in the list
\param[in] argv pointer to an array of arguments
\return 0 if the args were handled successfully, -1 if there was an error
and the usage message was shown.
*/
int Args::load(int argc, char **argv) {
int i = 1;
Fl::args_to_utf8(argc, argv); // for MSYS2/MinGW
if ( (Fl::args(argc, argv, i, arg_cb) == 0) // unsupported argument found
|| (Fluid.batch_mode && (i != argc - 1)) // .fl filename missing
|| (!Fluid.batch_mode && (i < argc - 1)) // more than one filename found
|| (argv[i] && (argv[i][0] == '-'))) { // unknown option
static const char *msg =
"usage: %s <switches> name.fl\n"
" -u : update .fl file and exit (may be combined with '-c' or '-cs')\n"
" -c : write .cxx and .h and exit\n"
" -cs : write .cxx and .h and strings and exit\n"
" -o <name> : .cxx output filename, or extension if <name> starts with '.'\n"
" -h <name> : .h output filename, or extension if <name> starts with '.'\n"
" --help : brief usage information\n"
" --version, -v : print fluid version number\n"
" -d : enable internal debugging\n";
const char *app_name = 0;
if ((argc > 0) && argv[0] && argv[0][0])
app_name = fl_filename_name(argv[0]);
if (!app_name || !app_name[0])
app_name = "fluid";
#ifdef _MSC_VER
fl_message(msg, app_name);
#else
fprintf(stderr, msg, app_name);
#endif
return -1;
}
return i;
}
int Args::arg_cb(int argc, char** argv, int& i) {
return Fluid.args.arg(argc, argv, i);
}
/**
Handle command line arguments.
\param[in] argc number of arguments in the list
\param[in] argv pointer to an array of arguments
\param[inout] i current argument index
\return number of arguments used; if 0, the argument is not supported
*/
int Args::arg(int argc, char** argv, int& i) {
if (argv[i][0] != '-')
return 0;
if (argv[i][1] == 'd' && !argv[i][2]) {
Fluid.debug_external_editor = 1;
i++; return 1;
}
if (argv[i][1] == 'u' && !argv[i][2]) {
update_file++;
Fluid.batch_mode++;
i++; return 1;
}
if (argv[i][1] == 'c' && !argv[i][2]) {
compile_file++;
Fluid.batch_mode++;
i++; return 1;
}
if ((strcmp(argv[i], "-v") == 0) || (strcmp(argv[i], "--version") == 0)) {
show_version = 1;
i++; return 1;
}
if (argv[i][1] == 'c' && argv[i][2] == 's' && !argv[i][3]) {
compile_file++;
compile_strings++;
Fluid.batch_mode++;
i++; return 1;
}
if (argv[i][1] == 'o' && !argv[i][2] && i + 1 < argc) {
strlcpy(code_filename, argv[i + 1], FL_PATH_MAX);
Fluid.batch_mode++;
i += 2; return 2;
}
#ifndef NDEBUG
if ((i + 1 < argc) && (strcmp(argv[i], "--autodoc") == 0)) {
strlcpy(autodoc_path, argv[i + 1], FL_PATH_MAX);
i += 2; return 2;
}
#endif
if (strcmp(argv[i], "--help") == 0) {
return 0;
}
if (argv[i][1] == 'h' && !argv[i][2]) {
if ((i + 1 < argc) && (argv[i + 1][0] != '-')) {
strlcpy(header_filename, argv[i + 1], FL_PATH_MAX);
Fluid.batch_mode++;
i += 2;
return 2;
} else {
return 0;
}
}
return 0;
}
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